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cosmopolitan/third_party/python/Lib/operator.py | """
Operator Interface
This module exports a set of functions corresponding to the intrinsic
operators of Python. For example, operator.add(x, y) is equivalent
to the expression x+y. The function names are those used for special
methods; variants without leading and trailing '__' are also provided
for convenience.
This is the pure Python implementation of the module.
"""
__all__ = ['abs', 'add', 'and_', 'attrgetter', 'concat', 'contains', 'countOf',
'delitem', 'eq', 'floordiv', 'ge', 'getitem', 'gt', 'iadd', 'iand',
'iconcat', 'ifloordiv', 'ilshift', 'imatmul', 'imod', 'imul',
'index', 'indexOf', 'inv', 'invert', 'ior', 'ipow', 'irshift',
'is_', 'is_not', 'isub', 'itemgetter', 'itruediv', 'ixor', 'le',
'length_hint', 'lshift', 'lt', 'matmul', 'methodcaller', 'mod',
'mul', 'ne', 'neg', 'not_', 'or_', 'pos', 'pow', 'rshift',
'setitem', 'sub', 'truediv', 'truth', 'xor']
from builtins import abs as _abs
# Comparison Operations *******************************************************#
def lt(a, b):
"Same as a < b."
return a < b
def le(a, b):
"Same as a <= b."
return a <= b
def eq(a, b):
"Same as a == b."
return a == b
def ne(a, b):
"Same as a != b."
return a != b
def ge(a, b):
"Same as a >= b."
return a >= b
def gt(a, b):
"Same as a > b."
return a > b
# Logical Operations **********************************************************#
def not_(a):
"Same as not a."
return not a
def truth(a):
"Return True if a is true, False otherwise."
return True if a else False
def is_(a, b):
"Same as a is b."
return a is b
def is_not(a, b):
"Same as a is not b."
return a is not b
# Mathematical/Bitwise Operations *********************************************#
def abs(a):
"Same as abs(a)."
return _abs(a)
def add(a, b):
"Same as a + b."
return a + b
def and_(a, b):
"Same as a & b."
return a & b
def floordiv(a, b):
"Same as a // b."
return a // b
def index(a):
"Same as a.__index__()."
return a.__index__()
def inv(a):
"Same as ~a."
return ~a
invert = inv
def lshift(a, b):
"Same as a << b."
return a << b
def mod(a, b):
"Same as a % b."
return a % b
def mul(a, b):
"Same as a * b."
return a * b
def matmul(a, b):
"Same as a @ b."
return a @ b
def neg(a):
"Same as -a."
return -a
def or_(a, b):
"Same as a | b."
return a | b
def pos(a):
"Same as +a."
return +a
def pow(a, b):
"Same as a ** b."
return a ** b
def rshift(a, b):
"Same as a >> b."
return a >> b
def sub(a, b):
"Same as a - b."
return a - b
def truediv(a, b):
"Same as a / b."
return a / b
def xor(a, b):
"Same as a ^ b."
return a ^ b
# Sequence Operations *********************************************************#
def concat(a, b):
"Same as a + b, for a and b sequences."
if not hasattr(a, '__getitem__'):
msg = "'%s' object can't be concatenated" % type(a).__name__
raise TypeError(msg)
return a + b
def contains(a, b):
"Same as b in a (note reversed operands)."
return b in a
def countOf(a, b):
"Return the number of times b occurs in a."
count = 0
for i in a:
if i == b:
count += 1
return count
def delitem(a, b):
"Same as del a[b]."
del a[b]
def getitem(a, b):
"Same as a[b]."
return a[b]
def indexOf(a, b):
"Return the first index of b in a."
for i, j in enumerate(a):
if j == b:
return i
else:
raise ValueError('sequence.index(x): x not in sequence')
def setitem(a, b, c):
"Same as a[b] = c."
a[b] = c
def length_hint(obj, default=0):
"""
Return an estimate of the number of items in obj.
This is useful for presizing containers when building from an iterable.
If the object supports len(), the result will be exact. Otherwise, it may
over- or under-estimate by an arbitrary amount. The result will be an
integer >= 0.
"""
if not isinstance(default, int):
msg = ("'%s' object cannot be interpreted as an integer" %
type(default).__name__)
raise TypeError(msg)
try:
return len(obj)
except TypeError:
pass
try:
hint = type(obj).__length_hint__
except AttributeError:
return default
try:
val = hint(obj)
except TypeError:
return default
if val is NotImplemented:
return default
if not isinstance(val, int):
msg = ('__length_hint__ must be integer, not %s' %
type(val).__name__)
raise TypeError(msg)
if val < 0:
msg = '__length_hint__() should return >= 0'
raise ValueError(msg)
return val
# Generalized Lookup Objects **************************************************#
class attrgetter:
"""
Return a callable object that fetches the given attribute(s) from its operand.
After f = attrgetter('name'), the call f(r) returns r.name.
After g = attrgetter('name', 'date'), the call g(r) returns (r.name, r.date).
After h = attrgetter('name.first', 'name.last'), the call h(r) returns
(r.name.first, r.name.last).
"""
__slots__ = ('_attrs', '_call')
def __init__(self, attr, *attrs):
if not attrs:
if not isinstance(attr, str):
raise TypeError('attribute name must be a string')
self._attrs = (attr,)
names = attr.split('.')
def func(obj):
for name in names:
obj = getattr(obj, name)
return obj
self._call = func
else:
self._attrs = (attr,) + attrs
getters = tuple(map(attrgetter, self._attrs))
def func(obj):
return tuple(getter(obj) for getter in getters)
self._call = func
def __call__(self, obj):
return self._call(obj)
def __repr__(self):
return '%s.%s(%s)' % (self.__class__.__module__,
self.__class__.__qualname__,
', '.join(map(repr, self._attrs)))
def __reduce__(self):
return self.__class__, self._attrs
class itemgetter:
"""
Return a callable object that fetches the given item(s) from its operand.
After f = itemgetter(2), the call f(r) returns r[2].
After g = itemgetter(2, 5, 3), the call g(r) returns (r[2], r[5], r[3])
"""
__slots__ = ('_items', '_call')
def __init__(self, item, *items):
if not items:
self._items = (item,)
def func(obj):
return obj[item]
self._call = func
else:
self._items = items = (item,) + items
def func(obj):
return tuple(obj[i] for i in items)
self._call = func
def __call__(self, obj):
return self._call(obj)
def __repr__(self):
return '%s.%s(%s)' % (self.__class__.__module__,
self.__class__.__name__,
', '.join(map(repr, self._items)))
def __reduce__(self):
return self.__class__, self._items
class methodcaller:
"""
Return a callable object that calls the given method on its operand.
After f = methodcaller('name'), the call f(r) returns r.name().
After g = methodcaller('name', 'date', foo=1), the call g(r) returns
r.name('date', foo=1).
"""
__slots__ = ('_name', '_args', '_kwargs')
def __init__(*args, **kwargs):
if len(args) < 2:
msg = "methodcaller needs at least one argument, the method name"
raise TypeError(msg)
self = args[0]
self._name = args[1]
if not isinstance(self._name, str):
raise TypeError('method name must be a string')
self._args = args[2:]
self._kwargs = kwargs
def __call__(self, obj):
return getattr(obj, self._name)(*self._args, **self._kwargs)
def __repr__(self):
args = [repr(self._name)]
args.extend(map(repr, self._args))
args.extend('%s=%r' % (k, v) for k, v in self._kwargs.items())
return '%s.%s(%s)' % (self.__class__.__module__,
self.__class__.__name__,
', '.join(args))
def __reduce__(self):
if not self._kwargs:
return self.__class__, (self._name,) + self._args
else:
from functools import partial
return partial(self.__class__, self._name, **self._kwargs), self._args
# In-place Operations *********************************************************#
def iadd(a, b):
"Same as a += b."
a += b
return a
def iand(a, b):
"Same as a &= b."
a &= b
return a
def iconcat(a, b):
"Same as a += b, for a and b sequences."
if not hasattr(a, '__getitem__'):
msg = "'%s' object can't be concatenated" % type(a).__name__
raise TypeError(msg)
a += b
return a
def ifloordiv(a, b):
"Same as a //= b."
a //= b
return a
def ilshift(a, b):
"Same as a <<= b."
a <<= b
return a
def imod(a, b):
"Same as a %= b."
a %= b
return a
def imul(a, b):
"Same as a *= b."
a *= b
return a
def imatmul(a, b):
"Same as a @= b."
a @= b
return a
def ior(a, b):
"Same as a |= b."
a |= b
return a
def ipow(a, b):
"Same as a **= b."
a **=b
return a
def irshift(a, b):
"Same as a >>= b."
a >>= b
return a
def isub(a, b):
"Same as a -= b."
a -= b
return a
def itruediv(a, b):
"Same as a /= b."
a /= b
return a
def ixor(a, b):
"Same as a ^= b."
a ^= b
return a
try:
from _operator import *
except ImportError:
pass
else:
try:
from _operator import __doc__
except ImportError:
pass
if __name__ == 'PYOBJ.COM':
import _operator
# All of these "__func__ = func" assignments have to happen after importing
# from _operator to make sure they're set to the right function
__lt__ = lt
__le__ = le
__eq__ = eq
__ne__ = ne
__ge__ = ge
__gt__ = gt
__not__ = not_
__abs__ = abs
__add__ = add
__and__ = and_
__floordiv__ = floordiv
__index__ = index
__inv__ = inv
__invert__ = invert
__lshift__ = lshift
__mod__ = mod
__mul__ = mul
__matmul__ = matmul
__neg__ = neg
__or__ = or_
__pos__ = pos
__pow__ = pow
__rshift__ = rshift
__sub__ = sub
__truediv__ = truediv
__xor__ = xor
__concat__ = concat
__contains__ = contains
__delitem__ = delitem
__getitem__ = getitem
__setitem__ = setitem
__iadd__ = iadd
__iand__ = iand
__iconcat__ = iconcat
__ifloordiv__ = ifloordiv
__ilshift__ = ilshift
__imod__ = imod
__imul__ = imul
__imatmul__ = imatmul
__ior__ = ior
__ipow__ = ipow
__irshift__ = irshift
__isub__ = isub
__itruediv__ = itruediv
__ixor__ = ixor
| 10,963 | 471 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/sre_constants.py | #
# Secret Labs' Regular Expression Engine
#
# various symbols used by the regular expression engine.
# run this script to update the _sre include files!
#
# Copyright (c) 1998-2001 by Secret Labs AB. All rights reserved.
#
# See the sre.py file for information on usage and redistribution.
#
"""Internal support module for sre"""
# update when constants are added or removed
MAGIC = 20140917
from _sre import MAXREPEAT, MAXGROUPS
# SRE standard exception (access as sre.error)
# should this really be here?
class error(Exception):
"""Exception raised for invalid regular expressions.
Attributes:
msg: The unformatted error message
pattern: The regular expression pattern
pos: The index in the pattern where compilation failed (may be None)
lineno: The line corresponding to pos (may be None)
colno: The column corresponding to pos (may be None)
"""
def __init__(self, msg, pattern=None, pos=None):
self.msg = msg
self.pattern = pattern
self.pos = pos
if pattern is not None and pos is not None:
msg = '%s at position %d' % (msg, pos)
if isinstance(pattern, str):
newline = '\n'
else:
newline = b'\n'
self.lineno = pattern.count(newline, 0, pos) + 1
self.colno = pos - pattern.rfind(newline, 0, pos)
if newline in pattern:
msg = '%s (line %d, column %d)' % (msg, self.lineno, self.colno)
else:
self.lineno = self.colno = None
super().__init__(msg)
class _NamedIntConstant(int):
def __new__(cls, value, name):
self = super(_NamedIntConstant, cls).__new__(cls, value)
self.name = name
return self
def __str__(self):
return self.name
__repr__ = __str__
MAXREPEAT = _NamedIntConstant(MAXREPEAT, 'MAXREPEAT')
def _makecodes(names):
names = names.strip().split()
items = [_NamedIntConstant(i, name) for i, name in enumerate(names)]
globals().update({item.name: item for item in items})
return items
# operators
# failure=0 success=1 (just because it looks better that way :-)
OPCODES = _makecodes("""
FAILURE SUCCESS
ANY ANY_ALL
ASSERT ASSERT_NOT
AT
BRANCH
CALL
CATEGORY
CHARSET BIGCHARSET
GROUPREF GROUPREF_EXISTS GROUPREF_IGNORE
IN IN_IGNORE
INFO
JUMP
LITERAL LITERAL_IGNORE
MARK
MAX_UNTIL
MIN_UNTIL
NOT_LITERAL NOT_LITERAL_IGNORE
NEGATE
RANGE
REPEAT
REPEAT_ONE
SUBPATTERN
MIN_REPEAT_ONE
RANGE_IGNORE
MIN_REPEAT MAX_REPEAT
""")
del OPCODES[-2:] # remove MIN_REPEAT and MAX_REPEAT
# positions
ATCODES = _makecodes("""
AT_BEGINNING AT_BEGINNING_LINE AT_BEGINNING_STRING
AT_BOUNDARY AT_NON_BOUNDARY
AT_END AT_END_LINE AT_END_STRING
AT_LOC_BOUNDARY AT_LOC_NON_BOUNDARY
AT_UNI_BOUNDARY AT_UNI_NON_BOUNDARY
""")
# categories
CHCODES = _makecodes("""
CATEGORY_DIGIT CATEGORY_NOT_DIGIT
CATEGORY_SPACE CATEGORY_NOT_SPACE
CATEGORY_WORD CATEGORY_NOT_WORD
CATEGORY_LINEBREAK CATEGORY_NOT_LINEBREAK
CATEGORY_LOC_WORD CATEGORY_LOC_NOT_WORD
CATEGORY_UNI_DIGIT CATEGORY_UNI_NOT_DIGIT
CATEGORY_UNI_SPACE CATEGORY_UNI_NOT_SPACE
CATEGORY_UNI_WORD CATEGORY_UNI_NOT_WORD
CATEGORY_UNI_LINEBREAK CATEGORY_UNI_NOT_LINEBREAK
""")
# replacement operations for "ignore case" mode
OP_IGNORE = {
GROUPREF: GROUPREF_IGNORE,
IN: IN_IGNORE,
LITERAL: LITERAL_IGNORE,
NOT_LITERAL: NOT_LITERAL_IGNORE,
RANGE: RANGE_IGNORE,
}
AT_MULTILINE = {
AT_BEGINNING: AT_BEGINNING_LINE,
AT_END: AT_END_LINE
}
AT_LOCALE = {
AT_BOUNDARY: AT_LOC_BOUNDARY,
AT_NON_BOUNDARY: AT_LOC_NON_BOUNDARY
}
AT_UNICODE = {
AT_BOUNDARY: AT_UNI_BOUNDARY,
AT_NON_BOUNDARY: AT_UNI_NON_BOUNDARY
}
CH_LOCALE = {
CATEGORY_DIGIT: CATEGORY_DIGIT,
CATEGORY_NOT_DIGIT: CATEGORY_NOT_DIGIT,
CATEGORY_SPACE: CATEGORY_SPACE,
CATEGORY_NOT_SPACE: CATEGORY_NOT_SPACE,
CATEGORY_WORD: CATEGORY_LOC_WORD,
CATEGORY_NOT_WORD: CATEGORY_LOC_NOT_WORD,
CATEGORY_LINEBREAK: CATEGORY_LINEBREAK,
CATEGORY_NOT_LINEBREAK: CATEGORY_NOT_LINEBREAK
}
CH_UNICODE = {
CATEGORY_DIGIT: CATEGORY_UNI_DIGIT,
CATEGORY_NOT_DIGIT: CATEGORY_UNI_NOT_DIGIT,
CATEGORY_SPACE: CATEGORY_UNI_SPACE,
CATEGORY_NOT_SPACE: CATEGORY_UNI_NOT_SPACE,
CATEGORY_WORD: CATEGORY_UNI_WORD,
CATEGORY_NOT_WORD: CATEGORY_UNI_NOT_WORD,
CATEGORY_LINEBREAK: CATEGORY_UNI_LINEBREAK,
CATEGORY_NOT_LINEBREAK: CATEGORY_UNI_NOT_LINEBREAK
}
# flags
SRE_FLAG_TEMPLATE = 1 # template mode (disable backtracking)
SRE_FLAG_IGNORECASE = 2 # case insensitive
SRE_FLAG_LOCALE = 4 # honour system locale
SRE_FLAG_MULTILINE = 8 # treat target as multiline string
SRE_FLAG_DOTALL = 16 # treat target as a single string
SRE_FLAG_UNICODE = 32 # use unicode "locale"
SRE_FLAG_VERBOSE = 64 # ignore whitespace and comments
SRE_FLAG_DEBUG = 128 # debugging
SRE_FLAG_ASCII = 256 # use ascii "locale"
# flags for INFO primitive
SRE_INFO_PREFIX = 1 # has prefix
SRE_INFO_LITERAL = 2 # entire pattern is literal (given by prefix)
SRE_INFO_CHARSET = 4 # pattern starts with character from given set
if __name__ == "__main__":
def dump(f, d, prefix):
items = sorted(d)
for item in items:
f.write("#define %s_%s %d\n" % (prefix, item, item))
with open("sre_constants.h", "w") as f:
f.write("""\
/*
* Secret Labs' Regular Expression Engine
*
* regular expression matching engine
*
* NOTE: This file is generated by sre_constants.py. If you need
* to change anything in here, edit sre_constants.py and run it.
*
* Copyright (c) 1997-2001 by Secret Labs AB. All rights reserved.
*
* See the _sre.c file for information on usage and redistribution.
*/
""")
f.write("#define SRE_MAGIC %d\n" % MAGIC)
dump(f, OPCODES, "SRE_OP")
dump(f, ATCODES, "SRE")
dump(f, CHCODES, "SRE")
f.write("#define SRE_FLAG_TEMPLATE %d\n" % SRE_FLAG_TEMPLATE)
f.write("#define SRE_FLAG_IGNORECASE %d\n" % SRE_FLAG_IGNORECASE)
f.write("#define SRE_FLAG_LOCALE %d\n" % SRE_FLAG_LOCALE)
f.write("#define SRE_FLAG_MULTILINE %d\n" % SRE_FLAG_MULTILINE)
f.write("#define SRE_FLAG_DOTALL %d\n" % SRE_FLAG_DOTALL)
f.write("#define SRE_FLAG_UNICODE %d\n" % SRE_FLAG_UNICODE)
f.write("#define SRE_FLAG_VERBOSE %d\n" % SRE_FLAG_VERBOSE)
f.write("#define SRE_FLAG_DEBUG %d\n" % SRE_FLAG_DEBUG)
f.write("#define SRE_FLAG_ASCII %d\n" % SRE_FLAG_ASCII)
f.write("#define SRE_INFO_PREFIX %d\n" % SRE_INFO_PREFIX)
f.write("#define SRE_INFO_LITERAL %d\n" % SRE_INFO_LITERAL)
f.write("#define SRE_INFO_CHARSET %d\n" % SRE_INFO_CHARSET)
print("done")
if __name__ == 'PYOBJ.COM':
ANY = 0
ANY_ALL = 0
ASSERT = 0
ASSERT_NOT = 0
AT = 0
AT_BEGINNING = 0
AT_BEGINNING_LINE = 0
AT_BEGINNING_STRING = 0
AT_BOUNDARY = 0
AT_END = 0
AT_END_LINE = 0
AT_END_STRING = 0
AT_LOC_BOUNDARY = 0
AT_LOC_NON_BOUNDARY = 0
AT_NON_BOUNDARY = 0
AT_UNI_BOUNDARY = 0
AT_UNI_NON_BOUNDARY = 0
BIGCHARSET = 0
BRANCH = 0
CALL = 0
CATEGORY = 0
CATEGORY_DIGIT = 0
CATEGORY_LINEBREAK = 0
CATEGORY_LOC_NOT_WORD = 0
CATEGORY_LOC_WORD = 0
CATEGORY_NOT_DIGIT = 0
CATEGORY_NOT_LINEBREAK = 0
CATEGORY_NOT_SPACE = 0
CATEGORY_NOT_WORD = 0
CATEGORY_SPACE = 0
CATEGORY_UNI_DIGIT = 0
CATEGORY_UNI_LINEBREAK = 0
CATEGORY_UNI_NOT_DIGIT = 0
CATEGORY_UNI_NOT_LINEBREAK = 0
CATEGORY_UNI_NOT_SPACE = 0
CATEGORY_UNI_NOT_WORD = 0
CATEGORY_UNI_SPACE = 0
CATEGORY_UNI_WORD = 0
CATEGORY_WORD = 0
CHARSET = 0
FAILURE = 0
GROUPREF = 0
GROUPREF_EXISTS = 0
GROUPREF_IGNORE = 0
IN = 0
INFO = 0
IN_IGNORE = 0
JUMP = 0
LITERAL = 0
LITERAL_IGNORE = 0
MARK = 0
MAX_REPEAT = 0
MAX_UNTIL = 0
MIN_REPEAT = 0
MIN_REPEAT_ONE = 0
MIN_UNTIL = 0
NEGATE = 0
NOT_LITERAL = 0
NOT_LITERAL_IGNORE = 0
RANGE = 0
RANGE_IGNORE = 0
REPEAT = 0
REPEAT_ONE = 0
SUBPATTERN = 0
SUCCESS = 0
| 8,227 | 294 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/lzma.py | """Interface to the liblzma compression library.
This module provides a class for reading and writing compressed files,
classes for incremental (de)compression, and convenience functions for
one-shot (de)compression.
These classes and functions support both the XZ and legacy LZMA
container formats, as well as raw compressed data streams.
"""
__all__ = [
"CHECK_NONE", "CHECK_CRC32", "CHECK_CRC64", "CHECK_SHA256",
"CHECK_ID_MAX", "CHECK_UNKNOWN",
"FILTER_LZMA1", "FILTER_LZMA2", "FILTER_DELTA", "FILTER_X86", "FILTER_IA64",
"FILTER_ARM", "FILTER_ARMTHUMB", "FILTER_POWERPC", "FILTER_SPARC",
"FORMAT_AUTO", "FORMAT_XZ", "FORMAT_ALONE", "FORMAT_RAW",
"MF_HC3", "MF_HC4", "MF_BT2", "MF_BT3", "MF_BT4",
"MODE_FAST", "MODE_NORMAL", "PRESET_DEFAULT", "PRESET_EXTREME",
"LZMACompressor", "LZMADecompressor", "LZMAFile", "LZMAError",
"open", "compress", "decompress", "is_check_supported",
]
import builtins
import io
import os
from _lzma import *
from _lzma import _encode_filter_properties, _decode_filter_properties
import _compression
_MODE_CLOSED = 0
_MODE_READ = 1
# Value 2 no longer used
_MODE_WRITE = 3
class LZMAFile(_compression.BaseStream):
"""A file object providing transparent LZMA (de)compression.
An LZMAFile can act as a wrapper for an existing file object, or
refer directly to a named file on disk.
Note that LZMAFile provides a *binary* file interface - data read
is returned as bytes, and data to be written must be given as bytes.
"""
def __init__(self, filename=None, mode="r", *,
format=None, check=-1, preset=None, filters=None):
"""Open an LZMA-compressed file in binary mode.
filename can be either an actual file name (given as a str,
bytes, or PathLike object), in which case the named file is
opened, or it can be an existing file object to read from or
write to.
mode can be "r" for reading (default), "w" for (over)writing,
"x" for creating exclusively, or "a" for appending. These can
equivalently be given as "rb", "wb", "xb" and "ab" respectively.
format specifies the container format to use for the file.
If mode is "r", this defaults to FORMAT_AUTO. Otherwise, the
default is FORMAT_XZ.
check specifies the integrity check to use. This argument can
only be used when opening a file for writing. For FORMAT_XZ,
the default is CHECK_CRC64. FORMAT_ALONE and FORMAT_RAW do not
support integrity checks - for these formats, check must be
omitted, or be CHECK_NONE.
When opening a file for reading, the *preset* argument is not
meaningful, and should be omitted. The *filters* argument should
also be omitted, except when format is FORMAT_RAW (in which case
it is required).
When opening a file for writing, the settings used by the
compressor can be specified either as a preset compression
level (with the *preset* argument), or in detail as a custom
filter chain (with the *filters* argument). For FORMAT_XZ and
FORMAT_ALONE, the default is to use the PRESET_DEFAULT preset
level. For FORMAT_RAW, the caller must always specify a filter
chain; the raw compressor does not support preset compression
levels.
preset (if provided) should be an integer in the range 0-9,
optionally OR-ed with the constant PRESET_EXTREME.
filters (if provided) should be a sequence of dicts. Each dict
should have an entry for "id" indicating ID of the filter, plus
additional entries for options to the filter.
"""
self._fp = None
self._closefp = False
self._mode = _MODE_CLOSED
if mode in ("r", "rb"):
if check != -1:
raise ValueError("Cannot specify an integrity check "
"when opening a file for reading")
if preset is not None:
raise ValueError("Cannot specify a preset compression "
"level when opening a file for reading")
if format is None:
format = FORMAT_AUTO
mode_code = _MODE_READ
elif mode in ("w", "wb", "a", "ab", "x", "xb"):
if format is None:
format = FORMAT_XZ
mode_code = _MODE_WRITE
self._compressor = LZMACompressor(format=format, check=check,
preset=preset, filters=filters)
self._pos = 0
else:
raise ValueError("Invalid mode: {!r}".format(mode))
if isinstance(filename, (str, bytes, os.PathLike)):
if "b" not in mode:
mode += "b"
self._fp = builtins.open(filename, mode)
self._closefp = True
self._mode = mode_code
elif hasattr(filename, "read") or hasattr(filename, "write"):
self._fp = filename
self._mode = mode_code
else:
raise TypeError("filename must be a str, bytes, file or PathLike object")
if self._mode == _MODE_READ:
raw = _compression.DecompressReader(self._fp, LZMADecompressor,
trailing_error=LZMAError, format=format, filters=filters)
self._buffer = io.BufferedReader(raw)
def close(self):
"""Flush and close the file.
May be called more than once without error. Once the file is
closed, any other operation on it will raise a ValueError.
"""
if self._mode == _MODE_CLOSED:
return
try:
if self._mode == _MODE_READ:
self._buffer.close()
self._buffer = None
elif self._mode == _MODE_WRITE:
self._fp.write(self._compressor.flush())
self._compressor = None
finally:
try:
if self._closefp:
self._fp.close()
finally:
self._fp = None
self._closefp = False
self._mode = _MODE_CLOSED
@property
def closed(self):
"""True if this file is closed."""
return self._mode == _MODE_CLOSED
def fileno(self):
"""Return the file descriptor for the underlying file."""
self._check_not_closed()
return self._fp.fileno()
def seekable(self):
"""Return whether the file supports seeking."""
return self.readable() and self._buffer.seekable()
def readable(self):
"""Return whether the file was opened for reading."""
self._check_not_closed()
return self._mode == _MODE_READ
def writable(self):
"""Return whether the file was opened for writing."""
self._check_not_closed()
return self._mode == _MODE_WRITE
def peek(self, size=-1):
"""Return buffered data without advancing the file position.
Always returns at least one byte of data, unless at EOF.
The exact number of bytes returned is unspecified.
"""
self._check_can_read()
# Relies on the undocumented fact that BufferedReader.peek() always
# returns at least one byte (except at EOF)
return self._buffer.peek(size)
def read(self, size=-1):
"""Read up to size uncompressed bytes from the file.
If size is negative or omitted, read until EOF is reached.
Returns b"" if the file is already at EOF.
"""
self._check_can_read()
return self._buffer.read(size)
def read1(self, size=-1):
"""Read up to size uncompressed bytes, while trying to avoid
making multiple reads from the underlying stream. Reads up to a
buffer's worth of data if size is negative.
Returns b"" if the file is at EOF.
"""
self._check_can_read()
if size < 0:
size = io.DEFAULT_BUFFER_SIZE
return self._buffer.read1(size)
def readline(self, size=-1):
"""Read a line of uncompressed bytes from the file.
The terminating newline (if present) is retained. If size is
non-negative, no more than size bytes will be read (in which
case the line may be incomplete). Returns b'' if already at EOF.
"""
self._check_can_read()
return self._buffer.readline(size)
def write(self, data):
"""Write a bytes object to the file.
Returns the number of uncompressed bytes written, which is
always len(data). Note that due to buffering, the file on disk
may not reflect the data written until close() is called.
"""
self._check_can_write()
compressed = self._compressor.compress(data)
self._fp.write(compressed)
self._pos += len(data)
return len(data)
def seek(self, offset, whence=io.SEEK_SET):
"""Change the file position.
The new position is specified by offset, relative to the
position indicated by whence. Possible values for whence are:
0: start of stream (default): offset must not be negative
1: current stream position
2: end of stream; offset must not be positive
Returns the new file position.
Note that seeking is emulated, so depending on the parameters,
this operation may be extremely slow.
"""
self._check_can_seek()
return self._buffer.seek(offset, whence)
def tell(self):
"""Return the current file position."""
self._check_not_closed()
if self._mode == _MODE_READ:
return self._buffer.tell()
return self._pos
def open(filename, mode="rb", *,
format=None, check=-1, preset=None, filters=None,
encoding=None, errors=None, newline=None):
"""Open an LZMA-compressed file in binary or text mode.
filename can be either an actual file name (given as a str, bytes,
or PathLike object), in which case the named file is opened, or it
can be an existing file object to read from or write to.
The mode argument can be "r", "rb" (default), "w", "wb", "x", "xb",
"a", or "ab" for binary mode, or "rt", "wt", "xt", or "at" for text
mode.
The format, check, preset and filters arguments specify the
compression settings, as for LZMACompressor, LZMADecompressor and
LZMAFile.
For binary mode, this function is equivalent to the LZMAFile
constructor: LZMAFile(filename, mode, ...). In this case, the
encoding, errors and newline arguments must not be provided.
For text mode, an LZMAFile object is created, and wrapped in an
io.TextIOWrapper instance with the specified encoding, error
handling behavior, and line ending(s).
"""
if "t" in mode:
if "b" in mode:
raise ValueError("Invalid mode: %r" % (mode,))
else:
if encoding is not None:
raise ValueError("Argument 'encoding' not supported in binary mode")
if errors is not None:
raise ValueError("Argument 'errors' not supported in binary mode")
if newline is not None:
raise ValueError("Argument 'newline' not supported in binary mode")
lz_mode = mode.replace("t", "")
binary_file = LZMAFile(filename, lz_mode, format=format, check=check,
preset=preset, filters=filters)
if "t" in mode:
return io.TextIOWrapper(binary_file, encoding, errors, newline)
else:
return binary_file
def compress(data, format=FORMAT_XZ, check=-1, preset=None, filters=None):
"""Compress a block of data.
Refer to LZMACompressor's docstring for a description of the
optional arguments *format*, *check*, *preset* and *filters*.
For incremental compression, use an LZMACompressor instead.
"""
comp = LZMACompressor(format, check, preset, filters)
return comp.compress(data) + comp.flush()
def decompress(data, format=FORMAT_AUTO, memlimit=None, filters=None):
"""Decompress a block of data.
Refer to LZMADecompressor's docstring for a description of the
optional arguments *format*, *check* and *filters*.
For incremental decompression, use an LZMADecompressor instead.
"""
results = []
while True:
decomp = LZMADecompressor(format, memlimit, filters)
try:
res = decomp.decompress(data)
except LZMAError:
if results:
break # Leftover data is not a valid LZMA/XZ stream; ignore it.
else:
raise # Error on the first iteration; bail out.
results.append(res)
if not decomp.eof:
raise LZMAError("Compressed data ended before the "
"end-of-stream marker was reached")
data = decomp.unused_data
if not data:
break
return b"".join(results)
| 12,983 | 348 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/enum.py | import sys
from types import MappingProxyType, DynamicClassAttribute
from functools import reduce
from operator import or_ as _or_
# try _collections first to reduce startup cost
try:
from _collections import OrderedDict
except ImportError:
from collections import OrderedDict
__all__ = [
'EnumMeta',
'Enum', 'IntEnum', 'Flag', 'IntFlag',
'auto', 'unique',
]
def _is_descriptor(obj):
"""Returns True if obj is a descriptor, False otherwise."""
return (
hasattr(obj, '__get__') or
hasattr(obj, '__set__') or
hasattr(obj, '__delete__'))
def _is_dunder(name):
"""Returns True if a __dunder__ name, False otherwise."""
return (name[:2] == name[-2:] == '__' and
name[2:3] != '_' and
name[-3:-2] != '_' and
len(name) > 4)
def _is_sunder(name):
"""Returns True if a _sunder_ name, False otherwise."""
return (name[0] == name[-1] == '_' and
name[1:2] != '_' and
name[-2:-1] != '_' and
len(name) > 2)
def _make_class_unpicklable(cls):
"""Make the given class un-picklable."""
def _break_on_call_reduce(self, proto):
raise TypeError('%r cannot be pickled' % self)
cls.__reduce_ex__ = _break_on_call_reduce
cls.__module__ = '<unknown>'
_auto_null = object()
class auto:
"""
Instances are replaced with an appropriate value in Enum class suites.
"""
value = _auto_null
class _EnumDict(dict):
"""Track enum member order and ensure member names are not reused.
EnumMeta will use the names found in self._member_names as the
enumeration member names.
"""
def __init__(self):
super().__init__()
self._member_names = []
self._last_values = []
def __setitem__(self, key, value):
"""Changes anything not dundered or not a descriptor.
If an enum member name is used twice, an error is raised; duplicate
values are not checked for.
Single underscore (sunder) names are reserved.
"""
if _is_sunder(key):
if key not in (
'_order_', '_create_pseudo_member_',
'_generate_next_value_', '_missing_',
):
raise ValueError('_names_ are reserved for future Enum use')
if key == '_generate_next_value_':
setattr(self, '_generate_next_value', value)
elif _is_dunder(key):
if key == '__order__':
key = '_order_'
elif key in self._member_names:
# descriptor overwriting an enum?
raise TypeError('Attempted to reuse key: %r' % key)
elif not _is_descriptor(value):
if key in self:
# enum overwriting a descriptor?
raise TypeError('%r already defined as: %r' % (key, self[key]))
if isinstance(value, auto):
if value.value == _auto_null:
value.value = self._generate_next_value(key, 1, len(self._member_names), self._last_values[:])
value = value.value
self._member_names.append(key)
self._last_values.append(value)
super().__setitem__(key, value)
# Dummy value for Enum as EnumMeta explicitly checks for it, but of course
# until EnumMeta finishes running the first time the Enum class doesn't exist.
# This is also why there are checks in EnumMeta like `if Enum is not None`
Enum = None
class EnumMeta(type):
"""Metaclass for Enum"""
@classmethod
def __prepare__(metacls, cls, bases):
# create the namespace dict
enum_dict = _EnumDict()
# inherit previous flags and _generate_next_value_ function
member_type, first_enum = metacls._get_mixins_(bases)
if first_enum is not None:
enum_dict['_generate_next_value_'] = getattr(first_enum, '_generate_next_value_', None)
return enum_dict
def __new__(metacls, cls, bases, classdict):
# an Enum class is final once enumeration items have been defined; it
# cannot be mixed with other types (int, float, etc.) if it has an
# inherited __new__ unless a new __new__ is defined (or the resulting
# class will fail).
member_type, first_enum = metacls._get_mixins_(bases)
__new__, save_new, use_args = metacls._find_new_(classdict, member_type,
first_enum)
# save enum items into separate mapping so they don't get baked into
# the new class
enum_members = {k: classdict[k] for k in classdict._member_names}
for name in classdict._member_names:
del classdict[name]
# adjust the sunders
_order_ = classdict.pop('_order_', None)
# check for illegal enum names (any others?)
invalid_names = set(enum_members) & {'mro', }
if invalid_names:
raise ValueError('Invalid enum member name: {0}'.format(
','.join(invalid_names)))
# create a default docstring if one has not been provided
if '__doc__' not in classdict:
classdict['__doc__'] = 'An enumeration.'
# create our new Enum type
enum_class = super().__new__(metacls, cls, bases, classdict)
enum_class._member_names_ = [] # names in definition order
enum_class._member_map_ = OrderedDict() # name->value map
enum_class._member_type_ = member_type
# save DynamicClassAttribute attributes from super classes so we know
# if we can take the shortcut of storing members in the class dict
dynamic_attributes = {k for c in enum_class.mro()
for k, v in c.__dict__.items()
if isinstance(v, DynamicClassAttribute)}
# Reverse value->name map for hashable values.
enum_class._value2member_map_ = {}
# If a custom type is mixed into the Enum, and it does not know how
# to pickle itself, pickle.dumps will succeed but pickle.loads will
# fail. Rather than have the error show up later and possibly far
# from the source, sabotage the pickle protocol for this class so
# that pickle.dumps also fails.
#
# However, if the new class implements its own __reduce_ex__, do not
# sabotage -- it's on them to make sure it works correctly. We use
# __reduce_ex__ instead of any of the others as it is preferred by
# pickle over __reduce__, and it handles all pickle protocols.
if '__reduce_ex__' not in classdict:
if member_type is not object:
methods = ('__getnewargs_ex__', '__getnewargs__',
'__reduce_ex__', '__reduce__')
if not any(m in member_type.__dict__ for m in methods):
_make_class_unpicklable(enum_class)
# instantiate them, checking for duplicates as we go
# we instantiate first instead of checking for duplicates first in case
# a custom __new__ is doing something funky with the values -- such as
# auto-numbering ;)
for member_name in classdict._member_names:
value = enum_members[member_name]
if not isinstance(value, tuple):
args = (value, )
else:
args = value
if member_type is tuple: # special case for tuple enums
args = (args, ) # wrap it one more time
if not use_args:
enum_member = __new__(enum_class)
if not hasattr(enum_member, '_value_'):
enum_member._value_ = value
else:
enum_member = __new__(enum_class, *args)
if not hasattr(enum_member, '_value_'):
if member_type is object:
enum_member._value_ = value
else:
enum_member._value_ = member_type(*args)
value = enum_member._value_
enum_member._name_ = member_name
enum_member.__objclass__ = enum_class
enum_member.__init__(*args)
# If another member with the same value was already defined, the
# new member becomes an alias to the existing one.
for name, canonical_member in enum_class._member_map_.items():
if canonical_member._value_ == enum_member._value_:
enum_member = canonical_member
break
else:
# Aliases don't appear in member names (only in __members__).
enum_class._member_names_.append(member_name)
# performance boost for any member that would not shadow
# a DynamicClassAttribute
if member_name not in dynamic_attributes:
setattr(enum_class, member_name, enum_member)
# now add to _member_map_
enum_class._member_map_[member_name] = enum_member
try:
# This may fail if value is not hashable. We can't add the value
# to the map, and by-value lookups for this value will be
# linear.
enum_class._value2member_map_[value] = enum_member
except TypeError:
pass
# double check that repr and friends are not the mixin's or various
# things break (such as pickle)
for name in ('__repr__', '__str__', '__format__', '__reduce_ex__'):
class_method = getattr(enum_class, name)
obj_method = getattr(member_type, name, None)
enum_method = getattr(first_enum, name, None)
if obj_method is not None and obj_method is class_method:
setattr(enum_class, name, enum_method)
# replace any other __new__ with our own (as long as Enum is not None,
# anyway) -- again, this is to support pickle
if Enum is not None:
# if the user defined their own __new__, save it before it gets
# clobbered in case they subclass later
if save_new:
enum_class.__new_member__ = __new__
enum_class.__new__ = Enum.__new__
# py3 support for definition order (helps keep py2/py3 code in sync)
if _order_ is not None:
if isinstance(_order_, str):
_order_ = _order_.replace(',', ' ').split()
if _order_ != enum_class._member_names_:
raise TypeError('member order does not match _order_')
return enum_class
def __bool__(self):
"""
classes/types should always be True.
"""
return True
def __call__(cls, value, names=None, *, module=None, qualname=None, type=None, start=1):
"""Either returns an existing member, or creates a new enum class.
This method is used both when an enum class is given a value to match
to an enumeration member (i.e. Color(3)) and for the functional API
(i.e. Color = Enum('Color', names='RED GREEN BLUE')).
When used for the functional API:
`value` will be the name of the new class.
`names` should be either a string of white-space/comma delimited names
(values will start at `start`), or an iterator/mapping of name, value pairs.
`module` should be set to the module this class is being created in;
if it is not set, an attempt to find that module will be made, but if
it fails the class will not be picklable.
`qualname` should be set to the actual location this class can be found
at in its module; by default it is set to the global scope. If this is
not correct, unpickling will fail in some circumstances.
`type`, if set, will be mixed in as the first base class.
"""
if names is None: # simple value lookup
return cls.__new__(cls, value)
# otherwise, functional API: we're creating a new Enum type
return cls._create_(value, names, module=module, qualname=qualname, type=type, start=start)
def __contains__(cls, member):
return isinstance(member, cls) and member._name_ in cls._member_map_
def __delattr__(cls, attr):
# nicer error message when someone tries to delete an attribute
# (see issue19025).
if attr in cls._member_map_:
raise AttributeError(
"%s: cannot delete Enum member." % cls.__name__)
super().__delattr__(attr)
def __dir__(self):
return (['__class__', '__doc__', '__members__', '__module__'] +
self._member_names_)
def __getattr__(cls, name):
"""Return the enum member matching `name`
We use __getattr__ instead of descriptors or inserting into the enum
class' __dict__ in order to support `name` and `value` being both
properties for enum members (which live in the class' __dict__) and
enum members themselves.
"""
if _is_dunder(name):
raise AttributeError(name)
try:
return cls._member_map_[name]
except KeyError:
raise AttributeError(name) from None
def __getitem__(cls, name):
return cls._member_map_[name]
def __iter__(cls):
return (cls._member_map_[name] for name in cls._member_names_)
def __len__(cls):
return len(cls._member_names_)
@property
def __members__(cls):
"""Returns a mapping of member name->value.
This mapping lists all enum members, including aliases. Note that this
is a read-only view of the internal mapping.
"""
return MappingProxyType(cls._member_map_)
def __repr__(cls):
return "<enum %r>" % cls.__name__
def __reversed__(cls):
return (cls._member_map_[name] for name in reversed(cls._member_names_))
def __setattr__(cls, name, value):
"""Block attempts to reassign Enum members.
A simple assignment to the class namespace only changes one of the
several possible ways to get an Enum member from the Enum class,
resulting in an inconsistent Enumeration.
"""
member_map = cls.__dict__.get('_member_map_', {})
if name in member_map:
raise AttributeError('Cannot reassign members.')
super().__setattr__(name, value)
def _create_(cls, class_name, names, *, module=None, qualname=None, type=None, start=1):
"""Convenience method to create a new Enum class.
`names` can be:
* A string containing member names, separated either with spaces or
commas. Values are incremented by 1 from `start`.
* An iterable of member names. Values are incremented by 1 from `start`.
* An iterable of (member name, value) pairs.
* A mapping of member name -> value pairs.
"""
metacls = cls.__class__
bases = (cls, ) if type is None else (type, cls)
_, first_enum = cls._get_mixins_(bases)
classdict = metacls.__prepare__(class_name, bases)
# special processing needed for names?
if isinstance(names, str):
names = names.replace(',', ' ').split()
if isinstance(names, (tuple, list)) and names and isinstance(names[0], str):
original_names, names = names, []
last_values = []
for count, name in enumerate(original_names):
value = first_enum._generate_next_value_(name, start, count, last_values[:])
last_values.append(value)
names.append((name, value))
# Here, names is either an iterable of (name, value) or a mapping.
for item in names:
if isinstance(item, str):
member_name, member_value = item, names[item]
else:
member_name, member_value = item
classdict[member_name] = member_value
enum_class = metacls.__new__(metacls, class_name, bases, classdict)
# TODO: replace the frame hack if a blessed way to know the calling
# module is ever developed
if module is None:
try:
module = sys._getframe(2).f_globals['__name__']
except (AttributeError, ValueError) as exc:
pass
if module is None:
_make_class_unpicklable(enum_class)
else:
enum_class.__module__ = module
if qualname is not None:
enum_class.__qualname__ = qualname
return enum_class
@staticmethod
def _get_mixins_(bases):
"""Returns the type for creating enum members, and the first inherited
enum class.
bases: the tuple of bases that was given to __new__
"""
if not bases:
return object, Enum
# double check that we are not subclassing a class with existing
# enumeration members; while we're at it, see if any other data
# type has been mixed in so we can use the correct __new__
member_type = first_enum = None
for base in bases:
if (base is not Enum and
issubclass(base, Enum) and
base._member_names_):
raise TypeError("Cannot extend enumerations")
# base is now the last base in bases
if not issubclass(base, Enum):
raise TypeError("new enumerations must be created as "
"`ClassName([mixin_type,] enum_type)`")
# get correct mix-in type (either mix-in type of Enum subclass, or
# first base if last base is Enum)
if not issubclass(bases[0], Enum):
member_type = bases[0] # first data type
first_enum = bases[-1] # enum type
else:
for base in bases[0].__mro__:
# most common: (IntEnum, int, Enum, object)
# possible: (<Enum 'AutoIntEnum'>, <Enum 'IntEnum'>,
# <class 'int'>, <Enum 'Enum'>,
# <class 'object'>)
if issubclass(base, Enum):
if first_enum is None:
first_enum = base
else:
if member_type is None:
member_type = base
return member_type, first_enum
@staticmethod
def _find_new_(classdict, member_type, first_enum):
"""Returns the __new__ to be used for creating the enum members.
classdict: the class dictionary given to __new__
member_type: the data type whose __new__ will be used by default
first_enum: enumeration to check for an overriding __new__
"""
# now find the correct __new__, checking to see of one was defined
# by the user; also check earlier enum classes in case a __new__ was
# saved as __new_member__
__new__ = classdict.get('__new__', None)
# should __new__ be saved as __new_member__ later?
save_new = __new__ is not None
if __new__ is None:
# check all possibles for __new_member__ before falling back to
# __new__
for method in ('__new_member__', '__new__'):
for possible in (member_type, first_enum):
target = getattr(possible, method, None)
if target not in {
None,
None.__new__,
object.__new__,
Enum.__new__,
}:
__new__ = target
break
if __new__ is not None:
break
else:
__new__ = object.__new__
# if a non-object.__new__ is used then whatever value/tuple was
# assigned to the enum member name will be passed to __new__ and to the
# new enum member's __init__
if __new__ is object.__new__:
use_args = False
else:
use_args = True
return __new__, save_new, use_args
class Enum(metaclass=EnumMeta):
"""Generic enumeration.
Derive from this class to define new enumerations.
"""
def __new__(cls, value):
# all enum instances are actually created during class construction
# without calling this method; this method is called by the metaclass'
# __call__ (i.e. Color(3) ), and by pickle
if type(value) is cls:
# For lookups like Color(Color.RED)
return value
# by-value search for a matching enum member
# see if it's in the reverse mapping (for hashable values)
try:
if value in cls._value2member_map_:
return cls._value2member_map_[value]
except TypeError:
# not there, now do long search -- O(n) behavior
for member in cls._member_map_.values():
if member._value_ == value:
return member
# still not found -- try _missing_ hook
return cls._missing_(value)
def _generate_next_value_(name, start, count, last_values):
for last_value in reversed(last_values):
try:
return last_value + 1
except TypeError:
pass
else:
return start
@classmethod
def _missing_(cls, value):
raise ValueError("%r is not a valid %s" % (value, cls.__name__))
def __repr__(self):
return "<%s.%s: %r>" % (
self.__class__.__name__, self._name_, self._value_)
def __str__(self):
return "%s.%s" % (self.__class__.__name__, self._name_)
def __dir__(self):
added_behavior = [
m
for cls in self.__class__.mro()
for m in cls.__dict__
if m[0] != '_' and m not in self._member_map_
]
return (['__class__', '__doc__', '__module__'] + added_behavior)
def __format__(self, format_spec):
# mixed-in Enums should use the mixed-in type's __format__, otherwise
# we can get strange results with the Enum name showing up instead of
# the value
# pure Enum branch
if self._member_type_ is object:
cls = str
val = str(self)
# mix-in branch
else:
cls = self._member_type_
val = self._value_
return cls.__format__(val, format_spec)
def __hash__(self):
return hash(self._name_)
def __reduce_ex__(self, proto):
return self.__class__, (self._value_, )
# DynamicClassAttribute is used to provide access to the `name` and
# `value` properties of enum members while keeping some measure of
# protection from modification, while still allowing for an enumeration
# to have members named `name` and `value`. This works because enumeration
# members are not set directly on the enum class -- __getattr__ is
# used to look them up.
@DynamicClassAttribute
def name(self):
"""The name of the Enum member."""
return self._name_
@DynamicClassAttribute
def value(self):
"""The value of the Enum member."""
return self._value_
@classmethod
def _convert(cls, name, module, filter, source=None):
"""
Create a new Enum subclass that replaces a collection of global constants
"""
# convert all constants from source (or module) that pass filter() to
# a new Enum called name, and export the enum and its members back to
# module;
# also, replace the __reduce_ex__ method so unpickling works in
# previous Python versions
module_globals = vars(sys.modules[module])
if source:
source = vars(source)
else:
source = module_globals
# We use an OrderedDict of sorted source keys so that the
# _value2member_map is populated in the same order every time
# for a consistent reverse mapping of number to name when there
# are multiple names for the same number rather than varying
# between runs due to hash randomization of the module dictionary.
members = [
(name, source[name])
for name in source.keys()
if filter(name)]
try:
# sort by value
members.sort(key=lambda t: (t[1], t[0]))
except TypeError:
# unless some values aren't comparable, in which case sort by name
members.sort(key=lambda t: t[0])
cls = cls(name, members, module=module)
cls.__reduce_ex__ = _reduce_ex_by_name
module_globals.update(cls.__members__)
module_globals[name] = cls
return cls
class IntEnum(int, Enum):
"""Enum where members are also (and must be) ints"""
def _reduce_ex_by_name(self, proto):
return self.name
class Flag(Enum):
"""Support for flags"""
def _generate_next_value_(name, start, count, last_values):
"""
Generate the next value when not given.
name: the name of the member
start: the initital start value or None
count: the number of existing members
last_value: the last value assigned or None
"""
if not count:
return start if start is not None else 1
for last_value in reversed(last_values):
try:
high_bit = _high_bit(last_value)
break
except Exception:
raise TypeError('Invalid Flag value: %r' % last_value) from None
return 2 ** (high_bit+1)
@classmethod
def _missing_(cls, value):
original_value = value
if value < 0:
value = ~value
possible_member = cls._create_pseudo_member_(value)
if original_value < 0:
possible_member = ~possible_member
return possible_member
@classmethod
def _create_pseudo_member_(cls, value):
"""
Create a composite member iff value contains only members.
"""
pseudo_member = cls._value2member_map_.get(value, None)
if pseudo_member is None:
# verify all bits are accounted for
_, extra_flags = _decompose(cls, value)
if extra_flags:
raise ValueError("%r is not a valid %s" % (value, cls.__name__))
# construct a singleton enum pseudo-member
pseudo_member = object.__new__(cls)
pseudo_member._name_ = None
pseudo_member._value_ = value
# use setdefault in case another thread already created a composite
# with this value
pseudo_member = cls._value2member_map_.setdefault(value, pseudo_member)
return pseudo_member
def __contains__(self, other):
if not isinstance(other, self.__class__):
return NotImplemented
return other._value_ & self._value_ == other._value_
def __repr__(self):
cls = self.__class__
if self._name_ is not None:
return '<%s.%s: %r>' % (cls.__name__, self._name_, self._value_)
members, uncovered = _decompose(cls, self._value_)
return '<%s.%s: %r>' % (
cls.__name__,
'|'.join([str(m._name_ or m._value_) for m in members]),
self._value_,
)
def __str__(self):
cls = self.__class__
if self._name_ is not None:
return '%s.%s' % (cls.__name__, self._name_)
members, uncovered = _decompose(cls, self._value_)
if len(members) == 1 and members[0]._name_ is None:
return '%s.%r' % (cls.__name__, members[0]._value_)
else:
return '%s.%s' % (
cls.__name__,
'|'.join([str(m._name_ or m._value_) for m in members]),
)
def __bool__(self):
return bool(self._value_)
def __or__(self, other):
if not isinstance(other, self.__class__):
return NotImplemented
return self.__class__(self._value_ | other._value_)
def __and__(self, other):
if not isinstance(other, self.__class__):
return NotImplemented
return self.__class__(self._value_ & other._value_)
def __xor__(self, other):
if not isinstance(other, self.__class__):
return NotImplemented
return self.__class__(self._value_ ^ other._value_)
def __invert__(self):
members, uncovered = _decompose(self.__class__, self._value_)
inverted_members = [
m for m in self.__class__
if m not in members and not m._value_ & self._value_
]
inverted = reduce(_or_, inverted_members, self.__class__(0))
return self.__class__(inverted)
class IntFlag(int, Flag):
"""Support for integer-based Flags"""
@classmethod
def _missing_(cls, value):
if not isinstance(value, int):
raise ValueError("%r is not a valid %s" % (value, cls.__name__))
new_member = cls._create_pseudo_member_(value)
return new_member
@classmethod
def _create_pseudo_member_(cls, value):
pseudo_member = cls._value2member_map_.get(value, None)
if pseudo_member is None:
need_to_create = [value]
# get unaccounted for bits
_, extra_flags = _decompose(cls, value)
# timer = 10
while extra_flags:
# timer -= 1
bit = _high_bit(extra_flags)
flag_value = 2 ** bit
if (flag_value not in cls._value2member_map_ and
flag_value not in need_to_create
):
need_to_create.append(flag_value)
if extra_flags == -flag_value:
extra_flags = 0
else:
extra_flags ^= flag_value
for value in reversed(need_to_create):
# construct singleton pseudo-members
pseudo_member = int.__new__(cls, value)
pseudo_member._name_ = None
pseudo_member._value_ = value
# use setdefault in case another thread already created a composite
# with this value
pseudo_member = cls._value2member_map_.setdefault(value, pseudo_member)
return pseudo_member
def __or__(self, other):
if not isinstance(other, (self.__class__, int)):
return NotImplemented
result = self.__class__(self._value_ | self.__class__(other)._value_)
return result
def __and__(self, other):
if not isinstance(other, (self.__class__, int)):
return NotImplemented
return self.__class__(self._value_ & self.__class__(other)._value_)
def __xor__(self, other):
if not isinstance(other, (self.__class__, int)):
return NotImplemented
return self.__class__(self._value_ ^ self.__class__(other)._value_)
__ror__ = __or__
__rand__ = __and__
__rxor__ = __xor__
def __invert__(self):
result = self.__class__(~self._value_)
return result
def _high_bit(value):
"""returns index of highest bit, or -1 if value is zero or negative"""
return value.bit_length() - 1
def unique(enumeration):
"""Class decorator for enumerations ensuring unique member values."""
duplicates = []
for name, member in enumeration.__members__.items():
if name != member.name:
duplicates.append((name, member.name))
if duplicates:
alias_details = ', '.join(
["%s -> %s" % (alias, name) for (alias, name) in duplicates])
raise ValueError('duplicate values found in %r: %s' %
(enumeration, alias_details))
return enumeration
def _decompose(flag, value):
"""Extract all members from the value."""
# _decompose is only called if the value is not named
not_covered = value
negative = value < 0
# issue29167: wrap accesses to _value2member_map_ in a list to avoid race
# conditions between iterating over it and having more psuedo-
# members added to it
if negative:
# only check for named flags
flags_to_check = [
(m, v)
for v, m in list(flag._value2member_map_.items())
if m.name is not None
]
else:
# check for named flags and powers-of-two flags
flags_to_check = [
(m, v)
for v, m in list(flag._value2member_map_.items())
if m.name is not None or _power_of_two(v)
]
members = []
for member, member_value in flags_to_check:
if member_value and member_value & value == member_value:
members.append(member)
not_covered &= ~member_value
if not members and value in flag._value2member_map_:
members.append(flag._value2member_map_[value])
members.sort(key=lambda m: m._value_, reverse=True)
if len(members) > 1 and members[0].value == value:
# we have the breakdown, don't need the value member itself
members.pop(0)
return members, not_covered
def _power_of_two(value):
if value < 1:
return False
return value == 2 ** _high_bit(value)
| 33,606 | 878 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/ntpath.py | # Module 'ntpath' -- common operations on WinNT/Win95 pathnames
"""Common pathname manipulations, WindowsNT/95 version.
Instead of importing this module directly, import os and refer to this
module as os.path.
"""
# strings representing various path-related bits and pieces
# These are primarily for export; internally, they are hardcoded.
# Should be set before imports for resolving cyclic dependency.
curdir = '.'
pardir = '..'
extsep = '.'
sep = '\\'
pathsep = ';'
altsep = '/'
defpath = '.;C:\\bin'
devnull = 'nul'
import os
import sys
import stat
import posix
import genericpath
from genericpath import *
__all__ = ["normcase","isabs","join","splitdrive","split","splitext",
"basename","dirname","commonprefix","getsize","getmtime",
"getatime","getctime", "islink","exists","lexists","isdir","isfile",
"ismount", "expanduser","expandvars","normpath","abspath",
"splitunc","curdir","pardir","sep","pathsep","defpath","altsep",
"extsep","devnull","realpath","supports_unicode_filenames","relpath",
"samefile", "sameopenfile", "samestat", "commonpath"]
def _get_bothseps(path):
if isinstance(path, bytes):
return b'\\/'
else:
return '\\/'
# Normalize the case of a pathname and map slashes to backslashes.
# Other normalizations (such as optimizing '../' away) are not done
# (this is done by normpath).
def normcase(s):
"""Normalize case of pathname.
Makes all characters lowercase and all slashes into backslashes."""
s = os.fspath(s)
try:
if isinstance(s, bytes):
return s.replace(b'/', b'\\').lower()
else:
return s.replace('/', '\\').lower()
except (TypeError, AttributeError):
if not isinstance(s, (bytes, str)):
raise TypeError("normcase() argument must be str or bytes, "
"not %r" % s.__class__.__name__) from None
raise
# Return whether a path is absolute.
# Trivial in Posix, harder on Windows.
# For Windows it is absolute if it starts with a slash or backslash (current
# volume), or if a pathname after the volume-letter-and-colon or UNC-resource
# starts with a slash or backslash.
def isabs(s):
"""Test whether a path is absolute"""
s = os.fspath(s)
s = splitdrive(s)[1]
return len(s) > 0 and s[0] in _get_bothseps(s)
# Join two (or more) paths.
def join(path, *paths):
path = os.fspath(path)
if isinstance(path, bytes):
sep = b'\\'
seps = b'\\/'
colon = b':'
else:
sep = '\\'
seps = '\\/'
colon = ':'
try:
if not paths:
path[:0] + sep #23780: Ensure compatible data type even if p is null.
result_drive, result_path = splitdrive(path)
for p in map(os.fspath, paths):
p_drive, p_path = splitdrive(p)
if p_path and p_path[0] in seps:
# Second path is absolute
if p_drive or not result_drive:
result_drive = p_drive
result_path = p_path
continue
elif p_drive and p_drive != result_drive:
if p_drive.lower() != result_drive.lower():
# Different drives => ignore the first path entirely
result_drive = p_drive
result_path = p_path
continue
# Same drive in different case
result_drive = p_drive
# Second path is relative to the first
if result_path and result_path[-1] not in seps:
result_path = result_path + sep
result_path = result_path + p_path
## add separator between UNC and non-absolute path
if (result_path and result_path[0] not in seps and
result_drive and result_drive[-1:] != colon):
return result_drive + sep + result_path
return result_drive + result_path
except (TypeError, AttributeError, BytesWarning):
genericpath._check_arg_types('join', path, *paths)
raise
# Split a path in a drive specification (a drive letter followed by a
# colon) and the path specification.
# It is always true that drivespec + pathspec == p
def splitdrive(p):
"""Split a pathname into drive/UNC sharepoint and relative path specifiers.
Returns a 2-tuple (drive_or_unc, path); either part may be empty.
If you assign
result = splitdrive(p)
It is always true that:
result[0] + result[1] == p
If the path contained a drive letter, drive_or_unc will contain everything
up to and including the colon. e.g. splitdrive("c:/dir") returns ("c:", "/dir")
If the path contained a UNC path, the drive_or_unc will contain the host name
and share up to but not including the fourth directory separator character.
e.g. splitdrive("//host/computer/dir") returns ("//host/computer", "/dir")
Paths cannot contain both a drive letter and a UNC path.
"""
p = os.fspath(p)
if len(p) >= 2:
if isinstance(p, bytes):
sep = b'\\'
altsep = b'/'
colon = b':'
else:
sep = '\\'
altsep = '/'
colon = ':'
normp = p.replace(altsep, sep)
if (normp[0:2] == sep*2) and (normp[2:3] != sep):
# is a UNC path:
# vvvvvvvvvvvvvvvvvvvv drive letter or UNC path
# \\machine\mountpoint\directory\etc\...
# directory ^^^^^^^^^^^^^^^
index = normp.find(sep, 2)
if index == -1:
return p[:0], p
index2 = normp.find(sep, index + 1)
# a UNC path can't have two slashes in a row
# (after the initial two)
if index2 == index + 1:
return p[:0], p
if index2 == -1:
index2 = len(p)
return p[:index2], p[index2:]
if normp[1:2] == colon:
return p[:2], p[2:]
return p[:0], p
# Parse UNC paths
def splitunc(p):
"""Deprecated since Python 3.1. Please use splitdrive() instead;
it now handles UNC paths.
Split a pathname into UNC mount point and relative path specifiers.
Return a 2-tuple (unc, rest); either part may be empty.
If unc is not empty, it has the form '//host/mount' (or similar
using backslashes). unc+rest is always the input path.
Paths containing drive letters never have a UNC part.
"""
import warnings
warnings.warn("ntpath.splitunc is deprecated, use ntpath.splitdrive instead",
DeprecationWarning, 2)
drive, path = splitdrive(p)
if len(drive) == 2:
# Drive letter present
return p[:0], p
return drive, path
# Split a path in head (everything up to the last '/') and tail (the
# rest). After the trailing '/' is stripped, the invariant
# join(head, tail) == p holds.
# The resulting head won't end in '/' unless it is the root.
def split(p):
"""Split a pathname.
Return tuple (head, tail) where tail is everything after the final slash.
Either part may be empty."""
p = os.fspath(p)
seps = _get_bothseps(p)
d, p = splitdrive(p)
# set i to index beyond p's last slash
i = len(p)
while i and p[i-1] not in seps:
i -= 1
head, tail = p[:i], p[i:] # now tail has no slashes
# remove trailing slashes from head, unless it's all slashes
head = head.rstrip(seps) or head
return d + head, tail
# Split a path in root and extension.
# The extension is everything starting at the last dot in the last
# pathname component; the root is everything before that.
# It is always true that root + ext == p.
def splitext(p):
p = os.fspath(p)
if isinstance(p, bytes):
return genericpath._splitext(p, b'\\', b'/', b'.')
else:
return genericpath._splitext(p, '\\', '/', '.')
splitext.__doc__ = genericpath._splitext.__doc__
# Return the tail (basename) part of a path.
def basename(p):
"""Returns the final component of a pathname"""
return split(p)[1]
# Return the head (dirname) part of a path.
def dirname(p):
"""Returns the directory component of a pathname"""
return split(p)[0]
# Is a path a symbolic link?
# This will always return false on systems where os.lstat doesn't exist.
def islink(path):
"""Test whether a path is a symbolic link.
This will always return false for Windows prior to 6.0.
"""
try:
st = os.lstat(path)
except (OSError, AttributeError):
return False
return stat.S_ISLNK(st.st_mode)
# Being true for dangling symbolic links is also useful.
def lexists(path):
"""Test whether a path exists. Returns True for broken symbolic links"""
try:
st = os.lstat(path)
except OSError:
return False
return True
# Is a path a mount point?
# Any drive letter root (eg c:\)
# Any share UNC (eg \\server\share)
# Any volume mounted on a filesystem folder
#
# No one method detects all three situations. Historically we've lexically
# detected drive letter roots and share UNCs. The canonical approach to
# detecting mounted volumes (querying the reparse tag) fails for the most
# common case: drive letter roots. The alternative which uses GetVolumePathName
# fails if the drive letter is the result of a SUBST.
try:
_getvolumepathname = posix._getvolumepathname
except AttributeError:
_getvolumepathname = None
def ismount(path):
"""Test whether a path is a mount point (a drive root, the root of a
share, or a mounted volume)"""
path = os.fspath(path)
seps = _get_bothseps(path)
path = abspath(path)
root, rest = splitdrive(path)
if root and root[0] in seps:
return (not rest) or (rest in seps)
if rest in seps:
return True
if _getvolumepathname:
return path.rstrip(seps) == _getvolumepathname(path).rstrip(seps)
else:
return False
# Expand paths beginning with '~' or '~user'.
# '~' means $HOME; '~user' means that user's home directory.
# If the path doesn't begin with '~', or if the user or $HOME is unknown,
# the path is returned unchanged (leaving error reporting to whatever
# function is called with the expanded path as argument).
# See also module 'glob' for expansion of *, ? and [...] in pathnames.
# (A function should also be defined to do full *sh-style environment
# variable expansion.)
def expanduser(path):
"""Expand ~ and ~user constructs.
If user or $HOME is unknown, do nothing."""
path = os.fspath(path)
if isinstance(path, bytes):
tilde = b'~'
else:
tilde = '~'
if not path.startswith(tilde):
return path
i, n = 1, len(path)
while i < n and path[i] not in _get_bothseps(path):
i += 1
if 'HOME' in os.environ:
userhome = os.environ['HOME']
elif 'USERPROFILE' in os.environ:
userhome = os.environ['USERPROFILE']
elif not 'HOMEPATH' in os.environ:
return path
else:
try:
drive = os.environ['HOMEDRIVE']
except KeyError:
drive = ''
userhome = join(drive, os.environ['HOMEPATH'])
if isinstance(path, bytes):
userhome = os.fsencode(userhome)
if i != 1: #~user
userhome = join(dirname(userhome), path[1:i])
return userhome + path[i:]
# Expand paths containing shell variable substitutions.
# The following rules apply:
# - no expansion within single quotes
# - '$$' is translated into '$'
# - '%%' is translated into '%' if '%%' are not seen in %var1%%var2%
# - ${varname} is accepted.
# - $varname is accepted.
# - %varname% is accepted.
# - varnames can be made out of letters, digits and the characters '_-'
# (though is not verified in the ${varname} and %varname% cases)
# XXX With COMMAND.COM you can use any characters in a variable name,
# XXX except '^|<>='.
def expandvars(path):
"""Expand shell variables of the forms $var, ${var} and %var%.
Unknown variables are left unchanged."""
path = os.fspath(path)
if isinstance(path, bytes):
if b'$' not in path and b'%' not in path:
return path
import string
varchars = bytes(string.ascii_letters + string.digits + '_-', 'ascii')
quote = b'\''
percent = b'%'
brace = b'{'
rbrace = b'}'
dollar = b'$'
environ = getattr(os, 'environb', None)
else:
if '$' not in path and '%' not in path:
return path
import string
varchars = string.ascii_letters + string.digits + '_-'
quote = '\''
percent = '%'
brace = '{'
rbrace = '}'
dollar = '$'
environ = os.environ
res = path[:0]
index = 0
pathlen = len(path)
while index < pathlen:
c = path[index:index+1]
if c == quote: # no expansion within single quotes
path = path[index + 1:]
pathlen = len(path)
try:
index = path.index(c)
res += c + path[:index + 1]
except ValueError:
res += c + path
index = pathlen - 1
elif c == percent: # variable or '%'
if path[index + 1:index + 2] == percent:
res += c
index += 1
else:
path = path[index+1:]
pathlen = len(path)
try:
index = path.index(percent)
except ValueError:
res += percent + path
index = pathlen - 1
else:
var = path[:index]
try:
if environ is None:
value = os.fsencode(os.environ[os.fsdecode(var)])
else:
value = environ[var]
except KeyError:
value = percent + var + percent
res += value
elif c == dollar: # variable or '$$'
if path[index + 1:index + 2] == dollar:
res += c
index += 1
elif path[index + 1:index + 2] == brace:
path = path[index+2:]
pathlen = len(path)
try:
index = path.index(rbrace)
except ValueError:
res += dollar + brace + path
index = pathlen - 1
else:
var = path[:index]
try:
if environ is None:
value = os.fsencode(os.environ[os.fsdecode(var)])
else:
value = environ[var]
except KeyError:
value = dollar + brace + var + rbrace
res += value
else:
var = path[:0]
index += 1
c = path[index:index + 1]
while c and c in varchars:
var += c
index += 1
c = path[index:index + 1]
try:
if environ is None:
value = os.fsencode(os.environ[os.fsdecode(var)])
else:
value = environ[var]
except KeyError:
value = dollar + var
res += value
if c:
index -= 1
else:
res += c
index += 1
return res
# Normalize a path, e.g. A//B, A/./B and A/foo/../B all become A\B.
# Previously, this function also truncated pathnames to 8+3 format,
# but as this module is called "ntpath", that's obviously wrong!
def normpath(path):
"""Normalize path, eliminating double slashes, etc."""
path = os.fspath(path)
if isinstance(path, bytes):
sep = b'\\'
altsep = b'/'
curdir = b'.'
pardir = b'..'
special_prefixes = (b'\\\\.\\', b'\\\\?\\')
else:
sep = '\\'
altsep = '/'
curdir = '.'
pardir = '..'
special_prefixes = ('\\\\.\\', '\\\\?\\')
if path.startswith(special_prefixes):
# in the case of paths with these prefixes:
# \\.\ -> device names
# \\?\ -> literal paths
# do not do any normalization, but return the path unchanged
return path
path = path.replace(altsep, sep)
prefix, path = splitdrive(path)
# collapse initial backslashes
if path.startswith(sep):
prefix += sep
path = path.lstrip(sep)
comps = path.split(sep)
i = 0
while i < len(comps):
if not comps[i] or comps[i] == curdir:
del comps[i]
elif comps[i] == pardir:
if i > 0 and comps[i-1] != pardir:
del comps[i-1:i+1]
i -= 1
elif i == 0 and prefix.endswith(sep):
del comps[i]
else:
i += 1
else:
i += 1
# If the path is now empty, substitute '.'
if not prefix and not comps:
comps.append(curdir)
return prefix + sep.join(comps)
def _abspath_fallback(path):
"""Return the absolute version of a path as a fallback function in case
`nt._getfullpathname` is not available or raises OSError. See bpo-31047 for
more.
"""
path = os.fspath(path)
if not isabs(path):
if isinstance(path, bytes):
cwd = os.getcwdb()
else:
cwd = os.getcwd()
path = join(cwd, path)
return normpath(path)
# Return an absolute path.
try:
_getfullpathname = posix._getfullpathname
except AttributeError: # not running on Windows - mock up something sensible
abspath = _abspath_fallback
else: # use native Windows method on Windows
def abspath(path):
"""Return the absolute version of a path."""
try:
return normpath(_getfullpathname(path))
except (OSError, ValueError):
return _abspath_fallback(path)
# realpath is a no-op on systems without islink support
realpath = abspath
supports_unicode_filenames = True
def relpath(path, start=None):
"""Return a relative version of a path"""
path = os.fspath(path)
if isinstance(path, bytes):
sep = b'\\'
curdir = b'.'
pardir = b'..'
else:
sep = '\\'
curdir = '.'
pardir = '..'
if start is None:
start = curdir
if not path:
raise ValueError("no path specified")
start = os.fspath(start)
try:
start_abs = abspath(normpath(start))
path_abs = abspath(normpath(path))
start_drive, start_rest = splitdrive(start_abs)
path_drive, path_rest = splitdrive(path_abs)
if normcase(start_drive) != normcase(path_drive):
raise ValueError("path is on mount %r, start on mount %r" % (
path_drive, start_drive))
start_list = [x for x in start_rest.split(sep) if x]
path_list = [x for x in path_rest.split(sep) if x]
# Work out how much of the filepath is shared by start and path.
i = 0
for e1, e2 in zip(start_list, path_list):
if normcase(e1) != normcase(e2):
break
i += 1
rel_list = [pardir] * (len(start_list)-i) + path_list[i:]
if not rel_list:
return curdir
return join(*rel_list)
except (TypeError, ValueError, AttributeError, BytesWarning, DeprecationWarning):
genericpath._check_arg_types('relpath', path, start)
raise
# Return the longest common sub-path of the sequence of paths given as input.
# The function is case-insensitive and 'separator-insensitive', i.e. if the
# only difference between two paths is the use of '\' versus '/' as separator,
# they are deemed to be equal.
#
# However, the returned path will have the standard '\' separator (even if the
# given paths had the alternative '/' separator) and will have the case of the
# first path given in the sequence. Additionally, any trailing separator is
# stripped from the returned path.
def commonpath(paths):
"""Given a sequence of path names, returns the longest common sub-path."""
if not paths:
raise ValueError('commonpath() arg is an empty sequence')
paths = tuple(map(os.fspath, paths))
if isinstance(paths[0], bytes):
sep = b'\\'
altsep = b'/'
curdir = b'.'
else:
sep = '\\'
altsep = '/'
curdir = '.'
try:
drivesplits = [splitdrive(p.replace(altsep, sep).lower()) for p in paths]
split_paths = [p.split(sep) for d, p in drivesplits]
try:
isabs, = set(p[:1] == sep for d, p in drivesplits)
except ValueError:
raise ValueError("Can't mix absolute and relative paths") from None
# Check that all drive letters or UNC paths match. The check is made only
# now otherwise type errors for mixing strings and bytes would not be
# caught.
if len(set(d for d, p in drivesplits)) != 1:
raise ValueError("Paths don't have the same drive")
drive, path = splitdrive(paths[0].replace(altsep, sep))
common = path.split(sep)
common = [c for c in common if c and c != curdir]
split_paths = [[c for c in s if c and c != curdir] for s in split_paths]
s1 = min(split_paths)
s2 = max(split_paths)
for i, c in enumerate(s1):
if c != s2[i]:
common = common[:i]
break
else:
common = common[:len(s1)]
prefix = drive + sep if isabs else drive
return prefix + sep.join(common)
except (TypeError, AttributeError):
genericpath._check_arg_types('commonpath', *paths)
raise
# determine if two files are in fact the same file
try:
# GetFinalPathNameByHandle is available starting with Windows 6.0.
# Windows XP and non-Windows OS'es will mock _getfinalpathname.
if sys.getwindowsversion()[:2] >= (6, 0):
_getfinalpathname = posix._getfinalpathname
else:
raise ImportError
except (AttributeError, ImportError, OSError):
# On Windows XP and earlier, two files are the same if their absolute
# pathnames are the same.
# Non-Windows operating systems fake this method with an XP
# approximation.
def _getfinalpathname(f):
return normcase(abspath(f))
try:
# The genericpath.isdir implementation uses os.stat and checks the mode
# attribute to tell whether or not the path is a directory.
# This is overkill on Windows - just pass the path to GetFileAttributes
# and check the attribute from there.
isdir = posix._isdir
except AttributeError:
# Use genericpath.isdir as imported above.
pass
| 22,988 | 689 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/io.py | """The io module provides the Python interfaces to stream handling. The
builtin open function is defined in this module.
At the top of the I/O hierarchy is the abstract base class IOBase. It
defines the basic interface to a stream. Note, however, that there is no
separation between reading and writing to streams; implementations are
allowed to raise an OSError if they do not support a given operation.
Extending IOBase is RawIOBase which deals simply with the reading and
writing of raw bytes to a stream. FileIO subclasses RawIOBase to provide
an interface to OS files.
BufferedIOBase deals with buffering on a raw byte stream (RawIOBase). Its
subclasses, BufferedWriter, BufferedReader, and BufferedRWPair buffer
streams that are readable, writable, and both respectively.
BufferedRandom provides a buffered interface to random access
streams. BytesIO is a simple stream of in-memory bytes.
Another IOBase subclass, TextIOBase, deals with the encoding and decoding
of streams into text. TextIOWrapper, which extends it, is a buffered text
interface to a buffered raw stream (`BufferedIOBase`). Finally, StringIO
is an in-memory stream for text.
Argument names are not part of the specification, and only the arguments
of open() are intended to be used as keyword arguments.
data:
DEFAULT_BUFFER_SIZE
An int containing the default buffer size used by the module's buffered
I/O classes. open() uses the file's blksize (as obtained by os.stat) if
possible.
"""
# New I/O library conforming to PEP 3116.
__author__ = ("Guido van Rossum <[email protected]>, "
"Mike Verdone <[email protected]>, "
"Mark Russell <[email protected]>, "
"Antoine Pitrou <[email protected]>, "
"Amaury Forgeot d'Arc <[email protected]>, "
"Benjamin Peterson <[email protected]>")
__all__ = ["BlockingIOError", "open", "IOBase", "RawIOBase", "FileIO",
"BytesIO", "StringIO", "BufferedIOBase",
"BufferedReader", "BufferedWriter", "BufferedRWPair",
"BufferedRandom", "TextIOBase", "TextIOWrapper",
"UnsupportedOperation", "SEEK_SET", "SEEK_CUR", "SEEK_END"]
import _io
import abc
from _io import (DEFAULT_BUFFER_SIZE, BlockingIOError, UnsupportedOperation,
open, FileIO, BytesIO, StringIO, BufferedReader,
BufferedWriter, BufferedRWPair, BufferedRandom,
IncrementalNewlineDecoder, TextIOWrapper)
OpenWrapper = _io.open # for compatibility with _pyio
# Pretend this exception was created here.
UnsupportedOperation.__module__ = "io"
# for seek()
SEEK_SET = 0
SEEK_CUR = 1
SEEK_END = 2
# Declaring ABCs in C is tricky so we do it here.
# Method descriptions and default implementations are inherited from the C
# version however.
class IOBase(_io._IOBase, metaclass=abc.ABCMeta):
__doc__ = _io._IOBase.__doc__
class RawIOBase(_io._RawIOBase, IOBase):
__doc__ = _io._RawIOBase.__doc__
class BufferedIOBase(_io._BufferedIOBase, IOBase):
__doc__ = _io._BufferedIOBase.__doc__
class TextIOBase(_io._TextIOBase, IOBase):
__doc__ = _io._TextIOBase.__doc__
RawIOBase.register(FileIO)
for klass in (BytesIO, BufferedReader, BufferedWriter, BufferedRandom,
BufferedRWPair):
BufferedIOBase.register(klass)
for klass in (StringIO, TextIOWrapper):
TextIOBase.register(klass)
del klass
try:
RawIOBase.register(_io._WindowsConsoleIO)
except AttributeError:
pass
| 3,480 | 98 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/smtpd.py | #! /usr/bin/env python3
"""An RFC 5321 smtp proxy with optional RFC 1870 and RFC 6531 extensions.
Usage: %(program)s [options] [localhost:localport [remotehost:remoteport]]
Options:
--nosetuid
-n
This program generally tries to setuid `nobody', unless this flag is
set. The setuid call will fail if this program is not run as root (in
which case, use this flag).
--version
-V
Print the version number and exit.
--class classname
-c classname
Use `classname' as the concrete SMTP proxy class. Uses `PureProxy' by
default.
--size limit
-s limit
Restrict the total size of the incoming message to "limit" number of
bytes via the RFC 1870 SIZE extension. Defaults to 33554432 bytes.
--smtputf8
-u
Enable the SMTPUTF8 extension and behave as an RFC 6531 smtp proxy.
--debug
-d
Turn on debugging prints.
--help
-h
Print this message and exit.
Version: %(__version__)s
If localhost is not given then `localhost' is used, and if localport is not
given then 8025 is used. If remotehost is not given then `localhost' is used,
and if remoteport is not given, then 25 is used.
"""
# Overview:
#
# This file implements the minimal SMTP protocol as defined in RFC 5321. It
# has a hierarchy of classes which implement the backend functionality for the
# smtpd. A number of classes are provided:
#
# SMTPServer - the base class for the backend. Raises NotImplementedError
# if you try to use it.
#
# DebuggingServer - simply prints each message it receives on stdout.
#
# PureProxy - Proxies all messages to a real smtpd which does final
# delivery. One known problem with this class is that it doesn't handle
# SMTP errors from the backend server at all. This should be fixed
# (contributions are welcome!).
#
# MailmanProxy - An experimental hack to work with GNU Mailman
# <www.list.org>. Using this server as your real incoming smtpd, your
# mailhost will automatically recognize and accept mail destined to Mailman
# lists when those lists are created. Every message not destined for a list
# gets forwarded to a real backend smtpd, as with PureProxy. Again, errors
# are not handled correctly yet.
#
#
# Author: Barry Warsaw <[email protected]>
#
# TODO:
#
# - support mailbox delivery
# - alias files
# - Handle more ESMTP extensions
# - handle error codes from the backend smtpd
import sys
import os
import errno
import getopt
import time
import socket
import asyncore
import asynchat
import collections
from warnings import warn
from email._header_value_parser import get_addr_spec, get_angle_addr
__all__ = [
"SMTPChannel", "SMTPServer", "DebuggingServer", "PureProxy",
"MailmanProxy",
]
program = sys.argv[0]
__version__ = 'Python SMTP proxy version 0.3'
class Devnull:
def write(self, msg): pass
def flush(self): pass
DEBUGSTREAM = Devnull()
NEWLINE = '\n'
COMMASPACE = ', '
DATA_SIZE_DEFAULT = 33554432
def usage(code, msg=''):
print(__doc__ % globals(), file=sys.stderr)
if msg:
print(msg, file=sys.stderr)
sys.exit(code)
class SMTPChannel(asynchat.async_chat):
COMMAND = 0
DATA = 1
command_size_limit = 512
command_size_limits = collections.defaultdict(lambda x=command_size_limit: x)
@property
def max_command_size_limit(self):
try:
return max(self.command_size_limits.values())
except ValueError:
return self.command_size_limit
def __init__(self, server, conn, addr, data_size_limit=DATA_SIZE_DEFAULT,
map=None, enable_SMTPUTF8=False, decode_data=False):
asynchat.async_chat.__init__(self, conn, map=map)
self.smtp_server = server
self.conn = conn
self.addr = addr
self.data_size_limit = data_size_limit
self.enable_SMTPUTF8 = enable_SMTPUTF8
self._decode_data = decode_data
if enable_SMTPUTF8 and decode_data:
raise ValueError("decode_data and enable_SMTPUTF8 cannot"
" be set to True at the same time")
if decode_data:
self._emptystring = ''
self._linesep = '\r\n'
self._dotsep = '.'
self._newline = NEWLINE
else:
self._emptystring = b''
self._linesep = b'\r\n'
self._dotsep = ord(b'.')
self._newline = b'\n'
self._set_rset_state()
self.seen_greeting = ''
self.extended_smtp = False
self.command_size_limits.clear()
self.fqdn = socket.getfqdn()
try:
self.peer = conn.getpeername()
except OSError as err:
# a race condition may occur if the other end is closing
# before we can get the peername
self.close()
if err.args[0] != errno.ENOTCONN:
raise
return
print('Peer:', repr(self.peer), file=DEBUGSTREAM)
self.push('220 %s %s' % (self.fqdn, __version__))
def _set_post_data_state(self):
"""Reset state variables to their post-DATA state."""
self.smtp_state = self.COMMAND
self.mailfrom = None
self.rcpttos = []
self.require_SMTPUTF8 = False
self.num_bytes = 0
self.set_terminator(b'\r\n')
def _set_rset_state(self):
"""Reset all state variables except the greeting."""
self._set_post_data_state()
self.received_data = ''
self.received_lines = []
# properties for backwards-compatibility
@property
def __server(self):
warn("Access to __server attribute on SMTPChannel is deprecated, "
"use 'smtp_server' instead", DeprecationWarning, 2)
return self.smtp_server
@__server.setter
def __server(self, value):
warn("Setting __server attribute on SMTPChannel is deprecated, "
"set 'smtp_server' instead", DeprecationWarning, 2)
self.smtp_server = value
@property
def __line(self):
warn("Access to __line attribute on SMTPChannel is deprecated, "
"use 'received_lines' instead", DeprecationWarning, 2)
return self.received_lines
@__line.setter
def __line(self, value):
warn("Setting __line attribute on SMTPChannel is deprecated, "
"set 'received_lines' instead", DeprecationWarning, 2)
self.received_lines = value
@property
def __state(self):
warn("Access to __state attribute on SMTPChannel is deprecated, "
"use 'smtp_state' instead", DeprecationWarning, 2)
return self.smtp_state
@__state.setter
def __state(self, value):
warn("Setting __state attribute on SMTPChannel is deprecated, "
"set 'smtp_state' instead", DeprecationWarning, 2)
self.smtp_state = value
@property
def __greeting(self):
warn("Access to __greeting attribute on SMTPChannel is deprecated, "
"use 'seen_greeting' instead", DeprecationWarning, 2)
return self.seen_greeting
@__greeting.setter
def __greeting(self, value):
warn("Setting __greeting attribute on SMTPChannel is deprecated, "
"set 'seen_greeting' instead", DeprecationWarning, 2)
self.seen_greeting = value
@property
def __mailfrom(self):
warn("Access to __mailfrom attribute on SMTPChannel is deprecated, "
"use 'mailfrom' instead", DeprecationWarning, 2)
return self.mailfrom
@__mailfrom.setter
def __mailfrom(self, value):
warn("Setting __mailfrom attribute on SMTPChannel is deprecated, "
"set 'mailfrom' instead", DeprecationWarning, 2)
self.mailfrom = value
@property
def __rcpttos(self):
warn("Access to __rcpttos attribute on SMTPChannel is deprecated, "
"use 'rcpttos' instead", DeprecationWarning, 2)
return self.rcpttos
@__rcpttos.setter
def __rcpttos(self, value):
warn("Setting __rcpttos attribute on SMTPChannel is deprecated, "
"set 'rcpttos' instead", DeprecationWarning, 2)
self.rcpttos = value
@property
def __data(self):
warn("Access to __data attribute on SMTPChannel is deprecated, "
"use 'received_data' instead", DeprecationWarning, 2)
return self.received_data
@__data.setter
def __data(self, value):
warn("Setting __data attribute on SMTPChannel is deprecated, "
"set 'received_data' instead", DeprecationWarning, 2)
self.received_data = value
@property
def __fqdn(self):
warn("Access to __fqdn attribute on SMTPChannel is deprecated, "
"use 'fqdn' instead", DeprecationWarning, 2)
return self.fqdn
@__fqdn.setter
def __fqdn(self, value):
warn("Setting __fqdn attribute on SMTPChannel is deprecated, "
"set 'fqdn' instead", DeprecationWarning, 2)
self.fqdn = value
@property
def __peer(self):
warn("Access to __peer attribute on SMTPChannel is deprecated, "
"use 'peer' instead", DeprecationWarning, 2)
return self.peer
@__peer.setter
def __peer(self, value):
warn("Setting __peer attribute on SMTPChannel is deprecated, "
"set 'peer' instead", DeprecationWarning, 2)
self.peer = value
@property
def __conn(self):
warn("Access to __conn attribute on SMTPChannel is deprecated, "
"use 'conn' instead", DeprecationWarning, 2)
return self.conn
@__conn.setter
def __conn(self, value):
warn("Setting __conn attribute on SMTPChannel is deprecated, "
"set 'conn' instead", DeprecationWarning, 2)
self.conn = value
@property
def __addr(self):
warn("Access to __addr attribute on SMTPChannel is deprecated, "
"use 'addr' instead", DeprecationWarning, 2)
return self.addr
@__addr.setter
def __addr(self, value):
warn("Setting __addr attribute on SMTPChannel is deprecated, "
"set 'addr' instead", DeprecationWarning, 2)
self.addr = value
# Overrides base class for convenience.
def push(self, msg):
asynchat.async_chat.push(self, bytes(
msg + '\r\n', 'utf-8' if self.require_SMTPUTF8 else 'ascii'))
# Implementation of base class abstract method
def collect_incoming_data(self, data):
limit = None
if self.smtp_state == self.COMMAND:
limit = self.max_command_size_limit
elif self.smtp_state == self.DATA:
limit = self.data_size_limit
if limit and self.num_bytes > limit:
return
elif limit:
self.num_bytes += len(data)
if self._decode_data:
self.received_lines.append(str(data, 'utf-8'))
else:
self.received_lines.append(data)
# Implementation of base class abstract method
def found_terminator(self):
line = self._emptystring.join(self.received_lines)
print('Data:', repr(line), file=DEBUGSTREAM)
self.received_lines = []
if self.smtp_state == self.COMMAND:
sz, self.num_bytes = self.num_bytes, 0
if not line:
self.push('500 Error: bad syntax')
return
if not self._decode_data:
line = str(line, 'utf-8')
i = line.find(' ')
if i < 0:
command = line.upper()
arg = None
else:
command = line[:i].upper()
arg = line[i+1:].strip()
max_sz = (self.command_size_limits[command]
if self.extended_smtp else self.command_size_limit)
if sz > max_sz:
self.push('500 Error: line too long')
return
method = getattr(self, 'smtp_' + command, None)
if not method:
self.push('500 Error: command "%s" not recognized' % command)
return
method(arg)
return
else:
if self.smtp_state != self.DATA:
self.push('451 Internal confusion')
self.num_bytes = 0
return
if self.data_size_limit and self.num_bytes > self.data_size_limit:
self.push('552 Error: Too much mail data')
self.num_bytes = 0
return
# Remove extraneous carriage returns and de-transparency according
# to RFC 5321, Section 4.5.2.
data = []
for text in line.split(self._linesep):
if text and text[0] == self._dotsep:
data.append(text[1:])
else:
data.append(text)
self.received_data = self._newline.join(data)
args = (self.peer, self.mailfrom, self.rcpttos, self.received_data)
kwargs = {}
if not self._decode_data:
kwargs = {
'mail_options': self.mail_options,
'rcpt_options': self.rcpt_options,
}
status = self.smtp_server.process_message(*args, **kwargs)
self._set_post_data_state()
if not status:
self.push('250 OK')
else:
self.push(status)
# SMTP and ESMTP commands
def smtp_HELO(self, arg):
if not arg:
self.push('501 Syntax: HELO hostname')
return
# See issue #21783 for a discussion of this behavior.
if self.seen_greeting:
self.push('503 Duplicate HELO/EHLO')
return
self._set_rset_state()
self.seen_greeting = arg
self.push('250 %s' % self.fqdn)
def smtp_EHLO(self, arg):
if not arg:
self.push('501 Syntax: EHLO hostname')
return
# See issue #21783 for a discussion of this behavior.
if self.seen_greeting:
self.push('503 Duplicate HELO/EHLO')
return
self._set_rset_state()
self.seen_greeting = arg
self.extended_smtp = True
self.push('250-%s' % self.fqdn)
if self.data_size_limit:
self.push('250-SIZE %s' % self.data_size_limit)
self.command_size_limits['MAIL'] += 26
if not self._decode_data:
self.push('250-8BITMIME')
if self.enable_SMTPUTF8:
self.push('250-SMTPUTF8')
self.command_size_limits['MAIL'] += 10
self.push('250 HELP')
def smtp_NOOP(self, arg):
if arg:
self.push('501 Syntax: NOOP')
else:
self.push('250 OK')
def smtp_QUIT(self, arg):
# args is ignored
self.push('221 Bye')
self.close_when_done()
def _strip_command_keyword(self, keyword, arg):
keylen = len(keyword)
if arg[:keylen].upper() == keyword:
return arg[keylen:].strip()
return ''
def _getaddr(self, arg):
if not arg:
return '', ''
if arg.lstrip().startswith('<'):
address, rest = get_angle_addr(arg)
else:
address, rest = get_addr_spec(arg)
if not address:
return address, rest
return address.addr_spec, rest
def _getparams(self, params):
# Return params as dictionary. Return None if not all parameters
# appear to be syntactically valid according to RFC 1869.
result = {}
for param in params:
param, eq, value = param.partition('=')
if not param.isalnum() or eq and not value:
return None
result[param] = value if eq else True
return result
def smtp_HELP(self, arg):
if arg:
extended = ' [SP <mail-parameters>]'
lc_arg = arg.upper()
if lc_arg == 'EHLO':
self.push('250 Syntax: EHLO hostname')
elif lc_arg == 'HELO':
self.push('250 Syntax: HELO hostname')
elif lc_arg == 'MAIL':
msg = '250 Syntax: MAIL FROM: <address>'
if self.extended_smtp:
msg += extended
self.push(msg)
elif lc_arg == 'RCPT':
msg = '250 Syntax: RCPT TO: <address>'
if self.extended_smtp:
msg += extended
self.push(msg)
elif lc_arg == 'DATA':
self.push('250 Syntax: DATA')
elif lc_arg == 'RSET':
self.push('250 Syntax: RSET')
elif lc_arg == 'NOOP':
self.push('250 Syntax: NOOP')
elif lc_arg == 'QUIT':
self.push('250 Syntax: QUIT')
elif lc_arg == 'VRFY':
self.push('250 Syntax: VRFY <address>')
else:
self.push('501 Supported commands: EHLO HELO MAIL RCPT '
'DATA RSET NOOP QUIT VRFY')
else:
self.push('250 Supported commands: EHLO HELO MAIL RCPT DATA '
'RSET NOOP QUIT VRFY')
def smtp_VRFY(self, arg):
if arg:
address, params = self._getaddr(arg)
if address:
self.push('252 Cannot VRFY user, but will accept message '
'and attempt delivery')
else:
self.push('502 Could not VRFY %s' % arg)
else:
self.push('501 Syntax: VRFY <address>')
def smtp_MAIL(self, arg):
if not self.seen_greeting:
self.push('503 Error: send HELO first')
return
print('===> MAIL', arg, file=DEBUGSTREAM)
syntaxerr = '501 Syntax: MAIL FROM: <address>'
if self.extended_smtp:
syntaxerr += ' [SP <mail-parameters>]'
if arg is None:
self.push(syntaxerr)
return
arg = self._strip_command_keyword('FROM:', arg)
address, params = self._getaddr(arg)
if not address:
self.push(syntaxerr)
return
if not self.extended_smtp and params:
self.push(syntaxerr)
return
if self.mailfrom:
self.push('503 Error: nested MAIL command')
return
self.mail_options = params.upper().split()
params = self._getparams(self.mail_options)
if params is None:
self.push(syntaxerr)
return
if not self._decode_data:
body = params.pop('BODY', '7BIT')
if body not in ['7BIT', '8BITMIME']:
self.push('501 Error: BODY can only be one of 7BIT, 8BITMIME')
return
if self.enable_SMTPUTF8:
smtputf8 = params.pop('SMTPUTF8', False)
if smtputf8 is True:
self.require_SMTPUTF8 = True
elif smtputf8 is not False:
self.push('501 Error: SMTPUTF8 takes no arguments')
return
size = params.pop('SIZE', None)
if size:
if not size.isdigit():
self.push(syntaxerr)
return
elif self.data_size_limit and int(size) > self.data_size_limit:
self.push('552 Error: message size exceeds fixed maximum message size')
return
if len(params.keys()) > 0:
self.push('555 MAIL FROM parameters not recognized or not implemented')
return
self.mailfrom = address
print('sender:', self.mailfrom, file=DEBUGSTREAM)
self.push('250 OK')
def smtp_RCPT(self, arg):
if not self.seen_greeting:
self.push('503 Error: send HELO first');
return
print('===> RCPT', arg, file=DEBUGSTREAM)
if not self.mailfrom:
self.push('503 Error: need MAIL command')
return
syntaxerr = '501 Syntax: RCPT TO: <address>'
if self.extended_smtp:
syntaxerr += ' [SP <mail-parameters>]'
if arg is None:
self.push(syntaxerr)
return
arg = self._strip_command_keyword('TO:', arg)
address, params = self._getaddr(arg)
if not address:
self.push(syntaxerr)
return
if not self.extended_smtp and params:
self.push(syntaxerr)
return
self.rcpt_options = params.upper().split()
params = self._getparams(self.rcpt_options)
if params is None:
self.push(syntaxerr)
return
# XXX currently there are no options we recognize.
if len(params.keys()) > 0:
self.push('555 RCPT TO parameters not recognized or not implemented')
return
self.rcpttos.append(address)
print('recips:', self.rcpttos, file=DEBUGSTREAM)
self.push('250 OK')
def smtp_RSET(self, arg):
if arg:
self.push('501 Syntax: RSET')
return
self._set_rset_state()
self.push('250 OK')
def smtp_DATA(self, arg):
if not self.seen_greeting:
self.push('503 Error: send HELO first');
return
if not self.rcpttos:
self.push('503 Error: need RCPT command')
return
if arg:
self.push('501 Syntax: DATA')
return
self.smtp_state = self.DATA
self.set_terminator(b'\r\n.\r\n')
self.push('354 End data with <CR><LF>.<CR><LF>')
# Commands that have not been implemented
def smtp_EXPN(self, arg):
self.push('502 EXPN not implemented')
class SMTPServer(asyncore.dispatcher):
# SMTPChannel class to use for managing client connections
channel_class = SMTPChannel
def __init__(self, localaddr, remoteaddr,
data_size_limit=DATA_SIZE_DEFAULT, map=None,
enable_SMTPUTF8=False, decode_data=False):
self._localaddr = localaddr
self._remoteaddr = remoteaddr
self.data_size_limit = data_size_limit
self.enable_SMTPUTF8 = enable_SMTPUTF8
self._decode_data = decode_data
if enable_SMTPUTF8 and decode_data:
raise ValueError("decode_data and enable_SMTPUTF8 cannot"
" be set to True at the same time")
asyncore.dispatcher.__init__(self, map=map)
try:
gai_results = socket.getaddrinfo(*localaddr,
type=socket.SOCK_STREAM)
self.create_socket(gai_results[0][0], gai_results[0][1])
# try to re-use a server port if possible
self.set_reuse_addr()
self.bind(localaddr)
self.listen(5)
except:
self.close()
raise
else:
print('%s started at %s\n\tLocal addr: %s\n\tRemote addr:%s' % (
self.__class__.__name__, time.ctime(time.time()),
localaddr, remoteaddr), file=DEBUGSTREAM)
def handle_accepted(self, conn, addr):
print('Incoming connection from %s' % repr(addr), file=DEBUGSTREAM)
channel = self.channel_class(self,
conn,
addr,
self.data_size_limit,
self._map,
self.enable_SMTPUTF8,
self._decode_data)
# API for "doing something useful with the message"
def process_message(self, peer, mailfrom, rcpttos, data, **kwargs):
"""Override this abstract method to handle messages from the client.
peer is a tuple containing (ipaddr, port) of the client that made the
socket connection to our smtp port.
mailfrom is the raw address the client claims the message is coming
from.
rcpttos is a list of raw addresses the client wishes to deliver the
message to.
data is a string containing the entire full text of the message,
headers (if supplied) and all. It has been `de-transparencied'
according to RFC 821, Section 4.5.2. In other words, a line
containing a `.' followed by other text has had the leading dot
removed.
kwargs is a dictionary containing additional information. It is
empty if decode_data=True was given as init parameter, otherwise
it will contain the following keys:
'mail_options': list of parameters to the mail command. All
elements are uppercase strings. Example:
['BODY=8BITMIME', 'SMTPUTF8'].
'rcpt_options': same, for the rcpt command.
This function should return None for a normal `250 Ok' response;
otherwise, it should return the desired response string in RFC 821
format.
"""
raise NotImplementedError
class DebuggingServer(SMTPServer):
def _print_message_content(self, peer, data):
inheaders = 1
lines = data.splitlines()
for line in lines:
# headers first
if inheaders and not line:
peerheader = 'X-Peer: ' + peer[0]
if not isinstance(data, str):
# decoded_data=false; make header match other binary output
peerheader = repr(peerheader.encode('utf-8'))
print(peerheader)
inheaders = 0
if not isinstance(data, str):
# Avoid spurious 'str on bytes instance' warning.
line = repr(line)
print(line)
def process_message(self, peer, mailfrom, rcpttos, data, **kwargs):
print('---------- MESSAGE FOLLOWS ----------')
if kwargs:
if kwargs.get('mail_options'):
print('mail options: %s' % kwargs['mail_options'])
if kwargs.get('rcpt_options'):
print('rcpt options: %s\n' % kwargs['rcpt_options'])
self._print_message_content(peer, data)
print('------------ END MESSAGE ------------')
class PureProxy(SMTPServer):
def __init__(self, *args, **kwargs):
if 'enable_SMTPUTF8' in kwargs and kwargs['enable_SMTPUTF8']:
raise ValueError("PureProxy does not support SMTPUTF8.")
super(PureProxy, self).__init__(*args, **kwargs)
def process_message(self, peer, mailfrom, rcpttos, data):
lines = data.split('\n')
# Look for the last header
i = 0
for line in lines:
if not line:
break
i += 1
lines.insert(i, 'X-Peer: %s' % peer[0])
data = NEWLINE.join(lines)
refused = self._deliver(mailfrom, rcpttos, data)
# TBD: what to do with refused addresses?
print('we got some refusals:', refused, file=DEBUGSTREAM)
def _deliver(self, mailfrom, rcpttos, data):
import smtplib
refused = {}
try:
s = smtplib.SMTP()
s.connect(self._remoteaddr[0], self._remoteaddr[1])
try:
refused = s.sendmail(mailfrom, rcpttos, data)
finally:
s.quit()
except smtplib.SMTPRecipientsRefused as e:
print('got SMTPRecipientsRefused', file=DEBUGSTREAM)
refused = e.recipients
except (OSError, smtplib.SMTPException) as e:
print('got', e.__class__, file=DEBUGSTREAM)
# All recipients were refused. If the exception had an associated
# error code, use it. Otherwise,fake it with a non-triggering
# exception code.
errcode = getattr(e, 'smtp_code', -1)
errmsg = getattr(e, 'smtp_error', 'ignore')
for r in rcpttos:
refused[r] = (errcode, errmsg)
return refused
class MailmanProxy(PureProxy):
def __init__(self, *args, **kwargs):
if 'enable_SMTPUTF8' in kwargs and kwargs['enable_SMTPUTF8']:
raise ValueError("MailmanProxy does not support SMTPUTF8.")
super(PureProxy, self).__init__(*args, **kwargs)
def process_message(self, peer, mailfrom, rcpttos, data):
from io import StringIO
# from Mailman import Utils
# from Mailman import Message
# from Mailman import MailList
# If the message is to a Mailman mailing list, then we'll invoke the
# Mailman script directly, without going through the real smtpd.
# Otherwise we'll forward it to the local proxy for disposition.
listnames = []
for rcpt in rcpttos:
local = rcpt.lower().split('@')[0]
# We allow the following variations on the theme
# listname
# listname-admin
# listname-owner
# listname-request
# listname-join
# listname-leave
parts = local.split('-')
if len(parts) > 2:
continue
listname = parts[0]
if len(parts) == 2:
command = parts[1]
else:
command = ''
if not Utils.list_exists(listname) or command not in (
'', 'admin', 'owner', 'request', 'join', 'leave'):
continue
listnames.append((rcpt, listname, command))
# Remove all list recipients from rcpttos and forward what we're not
# going to take care of ourselves. Linear removal should be fine
# since we don't expect a large number of recipients.
for rcpt, listname, command in listnames:
rcpttos.remove(rcpt)
# If there's any non-list destined recipients left,
print('forwarding recips:', ' '.join(rcpttos), file=DEBUGSTREAM)
if rcpttos:
refused = self._deliver(mailfrom, rcpttos, data)
# TBD: what to do with refused addresses?
print('we got refusals:', refused, file=DEBUGSTREAM)
# Now deliver directly to the list commands
mlists = {}
s = StringIO(data)
msg = Message.Message(s)
# These headers are required for the proper execution of Mailman. All
# MTAs in existence seem to add these if the original message doesn't
# have them.
if not msg.get('from'):
msg['From'] = mailfrom
if not msg.get('date'):
msg['Date'] = time.ctime(time.time())
for rcpt, listname, command in listnames:
print('sending message to', rcpt, file=DEBUGSTREAM)
mlist = mlists.get(listname)
if not mlist:
mlist = MailList.MailList(listname, lock=0)
mlists[listname] = mlist
# dispatch on the type of command
if command == '':
# post
msg.Enqueue(mlist, tolist=1)
elif command == 'admin':
msg.Enqueue(mlist, toadmin=1)
elif command == 'owner':
msg.Enqueue(mlist, toowner=1)
elif command == 'request':
msg.Enqueue(mlist, torequest=1)
elif command in ('join', 'leave'):
# TBD: this is a hack!
if command == 'join':
msg['Subject'] = 'subscribe'
else:
msg['Subject'] = 'unsubscribe'
msg.Enqueue(mlist, torequest=1)
class Options:
setuid = True
classname = 'PureProxy'
size_limit = None
enable_SMTPUTF8 = False
def parseargs():
global DEBUGSTREAM
try:
opts, args = getopt.getopt(
sys.argv[1:], 'nVhc:s:du',
['class=', 'nosetuid', 'version', 'help', 'size=', 'debug',
'smtputf8'])
except getopt.error as e:
usage(1, e)
options = Options()
for opt, arg in opts:
if opt in ('-h', '--help'):
usage(0)
elif opt in ('-V', '--version'):
print(__version__)
sys.exit(0)
elif opt in ('-n', '--nosetuid'):
options.setuid = False
elif opt in ('-c', '--class'):
options.classname = arg
elif opt in ('-d', '--debug'):
DEBUGSTREAM = sys.stderr
elif opt in ('-u', '--smtputf8'):
options.enable_SMTPUTF8 = True
elif opt in ('-s', '--size'):
try:
int_size = int(arg)
options.size_limit = int_size
except:
print('Invalid size: ' + arg, file=sys.stderr)
sys.exit(1)
# parse the rest of the arguments
if len(args) < 1:
localspec = 'localhost:8025'
remotespec = 'localhost:25'
elif len(args) < 2:
localspec = args[0]
remotespec = 'localhost:25'
elif len(args) < 3:
localspec = args[0]
remotespec = args[1]
else:
usage(1, 'Invalid arguments: %s' % COMMASPACE.join(args))
# split into host/port pairs
i = localspec.find(':')
if i < 0:
usage(1, 'Bad local spec: %s' % localspec)
options.localhost = localspec[:i]
try:
options.localport = int(localspec[i+1:])
except ValueError:
usage(1, 'Bad local port: %s' % localspec)
i = remotespec.find(':')
if i < 0:
usage(1, 'Bad remote spec: %s' % remotespec)
options.remotehost = remotespec[:i]
try:
options.remoteport = int(remotespec[i+1:])
except ValueError:
usage(1, 'Bad remote port: %s' % remotespec)
return options
if __name__ == '__main__':
options = parseargs()
# Become nobody
classname = options.classname
if "." in classname:
lastdot = classname.rfind(".")
mod = __import__(classname[:lastdot], globals(), locals(), [""])
classname = classname[lastdot+1:]
else:
import __main__ as mod
class_ = getattr(mod, classname)
proxy = class_((options.localhost, options.localport),
(options.remotehost, options.remoteport),
options.size_limit, enable_SMTPUTF8=options.enable_SMTPUTF8)
if options.setuid:
try:
import pwd
except ImportError:
print('Cannot import module "pwd"; try running with -n option.', file=sys.stderr)
sys.exit(1)
nobody = pwd.getpwnam('nobody')[2]
try:
os.setuid(nobody)
except PermissionError:
print('Cannot setuid "nobody"; try running with -n option.', file=sys.stderr)
sys.exit(1)
try:
asyncore.loop()
except KeyboardInterrupt:
pass
| 34,717 | 966 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/_weakrefset.py | # Access WeakSet through the weakref module.
# This code is separated-out because it is needed
# by abc.py to load everything else at startup.
from _weakref import ref
__all__ = ['WeakSet']
class _IterationGuard:
# This context manager registers itself in the current iterators of the
# weak container, such as to delay all removals until the context manager
# exits.
# This technique should be relatively thread-safe (since sets are).
def __init__(self, weakcontainer):
# Don't create cycles
self.weakcontainer = ref(weakcontainer)
def __enter__(self):
w = self.weakcontainer()
if w is not None:
w._iterating.add(self)
return self
def __exit__(self, e, t, b):
w = self.weakcontainer()
if w is not None:
s = w._iterating
s.remove(self)
if not s:
w._commit_removals()
class WeakSet:
def __init__(self, data=None):
self.data = set()
def _remove(item, selfref=ref(self)):
self = selfref()
if self is not None:
if self._iterating:
self._pending_removals.append(item)
else:
self.data.discard(item)
self._remove = _remove
# A list of keys to be removed
self._pending_removals = []
self._iterating = set()
if data is not None:
self.update(data)
def _commit_removals(self):
l = self._pending_removals
discard = self.data.discard
while l:
discard(l.pop())
def __iter__(self):
with _IterationGuard(self):
for itemref in self.data:
item = itemref()
if item is not None:
# Caveat: the iterator will keep a strong reference to
# `item` until it is resumed or closed.
yield item
def __len__(self):
return len(self.data) - len(self._pending_removals)
def __contains__(self, item):
try:
wr = ref(item)
except TypeError:
return False
return wr in self.data
def __reduce__(self):
return (self.__class__, (list(self),),
getattr(self, '__dict__', None))
def add(self, item):
if self._pending_removals:
self._commit_removals()
self.data.add(ref(item, self._remove))
def clear(self):
if self._pending_removals:
self._commit_removals()
self.data.clear()
def copy(self):
return self.__class__(self)
def pop(self):
if self._pending_removals:
self._commit_removals()
while True:
try:
itemref = self.data.pop()
except KeyError:
raise KeyError('pop from empty WeakSet')
item = itemref()
if item is not None:
return item
def remove(self, item):
if self._pending_removals:
self._commit_removals()
self.data.remove(ref(item))
def discard(self, item):
if self._pending_removals:
self._commit_removals()
self.data.discard(ref(item))
def update(self, other):
if self._pending_removals:
self._commit_removals()
for element in other:
self.add(element)
def __ior__(self, other):
self.update(other)
return self
def difference(self, other):
newset = self.copy()
newset.difference_update(other)
return newset
__sub__ = difference
def difference_update(self, other):
self.__isub__(other)
def __isub__(self, other):
if self._pending_removals:
self._commit_removals()
if self is other:
self.data.clear()
else:
self.data.difference_update(ref(item) for item in other)
return self
def intersection(self, other):
return self.__class__(item for item in other if item in self)
__and__ = intersection
def intersection_update(self, other):
self.__iand__(other)
def __iand__(self, other):
if self._pending_removals:
self._commit_removals()
self.data.intersection_update(ref(item) for item in other)
return self
def issubset(self, other):
return self.data.issubset(ref(item) for item in other)
__le__ = issubset
def __lt__(self, other):
return self.data < set(ref(item) for item in other)
def issuperset(self, other):
return self.data.issuperset(ref(item) for item in other)
__ge__ = issuperset
def __gt__(self, other):
return self.data > set(ref(item) for item in other)
def __eq__(self, other):
if not isinstance(other, self.__class__):
return NotImplemented
return self.data == set(ref(item) for item in other)
def symmetric_difference(self, other):
newset = self.copy()
newset.symmetric_difference_update(other)
return newset
__xor__ = symmetric_difference
def symmetric_difference_update(self, other):
self.__ixor__(other)
def __ixor__(self, other):
if self._pending_removals:
self._commit_removals()
if self is other:
self.data.clear()
else:
self.data.symmetric_difference_update(ref(item, self._remove) for item in other)
return self
def union(self, other):
return self.__class__(e for s in (self, other) for e in s)
__or__ = union
def isdisjoint(self, other):
return len(self.intersection(other)) == 0
| 5,705 | 197 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/socketserver.py | """Generic socket server classes.
This module tries to capture the various aspects of defining a server:
For socket-based servers:
- address family:
- AF_INET{,6}: IP (Internet Protocol) sockets (default)
- AF_UNIX: Unix domain sockets
- others, e.g. AF_DECNET are conceivable (see <socket.h>
- socket type:
- SOCK_STREAM (reliable stream, e.g. TCP)
- SOCK_DGRAM (datagrams, e.g. UDP)
For request-based servers (including socket-based):
- client address verification before further looking at the request
(This is actually a hook for any processing that needs to look
at the request before anything else, e.g. logging)
- how to handle multiple requests:
- synchronous (one request is handled at a time)
- forking (each request is handled by a new process)
- threading (each request is handled by a new thread)
The classes in this module favor the server type that is simplest to
write: a synchronous TCP/IP server. This is bad class design, but
save some typing. (There's also the issue that a deep class hierarchy
slows down method lookups.)
There are five classes in an inheritance diagram, four of which represent
synchronous servers of four types:
+------------+
| BaseServer |
+------------+
|
v
+-----------+ +------------------+
| TCPServer |------->| UnixStreamServer |
+-----------+ +------------------+
|
v
+-----------+ +--------------------+
| UDPServer |------->| UnixDatagramServer |
+-----------+ +--------------------+
Note that UnixDatagramServer derives from UDPServer, not from
UnixStreamServer -- the only difference between an IP and a Unix
stream server is the address family, which is simply repeated in both
unix server classes.
Forking and threading versions of each type of server can be created
using the ForkingMixIn and ThreadingMixIn mix-in classes. For
instance, a threading UDP server class is created as follows:
class ThreadingUDPServer(ThreadingMixIn, UDPServer): pass
The Mix-in class must come first, since it overrides a method defined
in UDPServer! Setting the various member variables also changes
the behavior of the underlying server mechanism.
To implement a service, you must derive a class from
BaseRequestHandler and redefine its handle() method. You can then run
various versions of the service by combining one of the server classes
with your request handler class.
The request handler class must be different for datagram or stream
services. This can be hidden by using the request handler
subclasses StreamRequestHandler or DatagramRequestHandler.
Of course, you still have to use your head!
For instance, it makes no sense to use a forking server if the service
contains state in memory that can be modified by requests (since the
modifications in the child process would never reach the initial state
kept in the parent process and passed to each child). In this case,
you can use a threading server, but you will probably have to use
locks to avoid two requests that come in nearly simultaneous to apply
conflicting changes to the server state.
On the other hand, if you are building e.g. an HTTP server, where all
data is stored externally (e.g. in the file system), a synchronous
class will essentially render the service "deaf" while one request is
being handled -- which may be for a very long time if a client is slow
to read all the data it has requested. Here a threading or forking
server is appropriate.
In some cases, it may be appropriate to process part of a request
synchronously, but to finish processing in a forked child depending on
the request data. This can be implemented by using a synchronous
server and doing an explicit fork in the request handler class
handle() method.
Another approach to handling multiple simultaneous requests in an
environment that supports neither threads nor fork (or where these are
too expensive or inappropriate for the service) is to maintain an
explicit table of partially finished requests and to use a selector to
decide which request to work on next (or whether to handle a new
incoming request). This is particularly important for stream services
where each client can potentially be connected for a long time (if
threads or subprocesses cannot be used).
Future work:
- Standard classes for Sun RPC (which uses either UDP or TCP)
- Standard mix-in classes to implement various authentication
and encryption schemes
XXX Open problems:
- What to do with out-of-band data?
BaseServer:
- split generic "request" functionality out into BaseServer class.
Copyright (C) 2000 Luke Kenneth Casson Leighton <[email protected]>
example: read entries from a SQL database (requires overriding
get_request() to return a table entry from the database).
entry is processed by a RequestHandlerClass.
"""
# Author of the BaseServer patch: Luke Kenneth Casson Leighton
__version__ = "0.4"
import socket
import selectors
import os
import errno
import sys
try:
import threading
except ImportError:
import dummy_threading as threading
from io import BufferedIOBase
from time import monotonic as time
__all__ = ["BaseServer", "TCPServer", "UDPServer",
"ThreadingUDPServer", "ThreadingTCPServer",
"BaseRequestHandler", "StreamRequestHandler",
"DatagramRequestHandler", "ThreadingMixIn"]
if hasattr(os, "fork"):
__all__.extend(["ForkingUDPServer","ForkingTCPServer", "ForkingMixIn"])
if hasattr(socket, "AF_UNIX"):
__all__.extend(["UnixStreamServer","UnixDatagramServer",
"ThreadingUnixStreamServer",
"ThreadingUnixDatagramServer"])
# poll/select have the advantage of not requiring any extra file descriptor,
# contrarily to epoll/kqueue (also, they require a single syscall).
if hasattr(selectors, 'PollSelector'):
_ServerSelector = selectors.PollSelector
else:
_ServerSelector = selectors.SelectSelector
class BaseServer:
"""Base class for server classes.
Methods for the caller:
- __init__(server_address, RequestHandlerClass)
- serve_forever(poll_interval=0.5)
- shutdown()
- handle_request() # if you do not use serve_forever()
- fileno() -> int # for selector
Methods that may be overridden:
- server_bind()
- server_activate()
- get_request() -> request, client_address
- handle_timeout()
- verify_request(request, client_address)
- server_close()
- process_request(request, client_address)
- shutdown_request(request)
- close_request(request)
- service_actions()
- handle_error()
Methods for derived classes:
- finish_request(request, client_address)
Class variables that may be overridden by derived classes or
instances:
- timeout
- address_family
- socket_type
- allow_reuse_address
Instance variables:
- RequestHandlerClass
- socket
"""
timeout = None
def __init__(self, server_address, RequestHandlerClass):
"""Constructor. May be extended, do not override."""
self.server_address = server_address
self.RequestHandlerClass = RequestHandlerClass
self.__is_shut_down = threading.Event()
self.__shutdown_request = False
def server_activate(self):
"""Called by constructor to activate the server.
May be overridden.
"""
pass
def serve_forever(self, poll_interval=0.5):
"""Handle one request at a time until shutdown.
Polls for shutdown every poll_interval seconds. Ignores
self.timeout. If you need to do periodic tasks, do them in
another thread.
"""
self.__is_shut_down.clear()
try:
# XXX: Consider using another file descriptor or connecting to the
# socket to wake this up instead of polling. Polling reduces our
# responsiveness to a shutdown request and wastes cpu at all other
# times.
with _ServerSelector() as selector:
selector.register(self, selectors.EVENT_READ)
while not self.__shutdown_request:
ready = selector.select(poll_interval)
# bpo-35017: shutdown() called during select(), exit immediately.
if self.__shutdown_request:
break
if ready:
self._handle_request_noblock()
self.service_actions()
finally:
self.__shutdown_request = False
self.__is_shut_down.set()
def shutdown(self):
"""Stops the serve_forever loop.
Blocks until the loop has finished. This must be called while
serve_forever() is running in another thread, or it will
deadlock.
"""
self.__shutdown_request = True
self.__is_shut_down.wait()
def service_actions(self):
"""Called by the serve_forever() loop.
May be overridden by a subclass / Mixin to implement any code that
needs to be run during the loop.
"""
pass
# The distinction between handling, getting, processing and finishing a
# request is fairly arbitrary. Remember:
#
# - handle_request() is the top-level call. It calls selector.select(),
# get_request(), verify_request() and process_request()
# - get_request() is different for stream or datagram sockets
# - process_request() is the place that may fork a new process or create a
# new thread to finish the request
# - finish_request() instantiates the request handler class; this
# constructor will handle the request all by itself
def handle_request(self):
"""Handle one request, possibly blocking.
Respects self.timeout.
"""
# Support people who used socket.settimeout() to escape
# handle_request before self.timeout was available.
timeout = self.socket.gettimeout()
if timeout is None:
timeout = self.timeout
elif self.timeout is not None:
timeout = min(timeout, self.timeout)
if timeout is not None:
deadline = time() + timeout
# Wait until a request arrives or the timeout expires - the loop is
# necessary to accommodate early wakeups due to EINTR.
with _ServerSelector() as selector:
selector.register(self, selectors.EVENT_READ)
while True:
ready = selector.select(timeout)
if ready:
return self._handle_request_noblock()
else:
if timeout is not None:
timeout = deadline - time()
if timeout < 0:
return self.handle_timeout()
def _handle_request_noblock(self):
"""Handle one request, without blocking.
I assume that selector.select() has returned that the socket is
readable before this function was called, so there should be no risk of
blocking in get_request().
"""
try:
request, client_address = self.get_request()
except OSError:
return
if self.verify_request(request, client_address):
try:
self.process_request(request, client_address)
except Exception:
self.handle_error(request, client_address)
self.shutdown_request(request)
except:
self.shutdown_request(request)
raise
else:
self.shutdown_request(request)
def handle_timeout(self):
"""Called if no new request arrives within self.timeout.
Overridden by ForkingMixIn.
"""
pass
def verify_request(self, request, client_address):
"""Verify the request. May be overridden.
Return True if we should proceed with this request.
"""
return True
def process_request(self, request, client_address):
"""Call finish_request.
Overridden by ForkingMixIn and ThreadingMixIn.
"""
self.finish_request(request, client_address)
self.shutdown_request(request)
def server_close(self):
"""Called to clean-up the server.
May be overridden.
"""
pass
def finish_request(self, request, client_address):
"""Finish one request by instantiating RequestHandlerClass."""
self.RequestHandlerClass(request, client_address, self)
def shutdown_request(self, request):
"""Called to shutdown and close an individual request."""
self.close_request(request)
def close_request(self, request):
"""Called to clean up an individual request."""
pass
def handle_error(self, request, client_address):
"""Handle an error gracefully. May be overridden.
The default is to print a traceback and continue.
"""
print('-'*40, file=sys.stderr)
print('Exception happened during processing of request from',
client_address, file=sys.stderr)
import traceback
traceback.print_exc()
print('-'*40, file=sys.stderr)
def __enter__(self):
return self
def __exit__(self, *args):
self.server_close()
class TCPServer(BaseServer):
"""Base class for various socket-based server classes.
Defaults to synchronous IP stream (i.e., TCP).
Methods for the caller:
- __init__(server_address, RequestHandlerClass, bind_and_activate=True)
- serve_forever(poll_interval=0.5)
- shutdown()
- handle_request() # if you don't use serve_forever()
- fileno() -> int # for selector
Methods that may be overridden:
- server_bind()
- server_activate()
- get_request() -> request, client_address
- handle_timeout()
- verify_request(request, client_address)
- process_request(request, client_address)
- shutdown_request(request)
- close_request(request)
- handle_error()
Methods for derived classes:
- finish_request(request, client_address)
Class variables that may be overridden by derived classes or
instances:
- timeout
- address_family
- socket_type
- request_queue_size (only for stream sockets)
- allow_reuse_address
Instance variables:
- server_address
- RequestHandlerClass
- socket
"""
address_family = socket.AF_INET
socket_type = socket.SOCK_STREAM
request_queue_size = 5
allow_reuse_address = False
def __init__(self, server_address, RequestHandlerClass, bind_and_activate=True):
"""Constructor. May be extended, do not override."""
BaseServer.__init__(self, server_address, RequestHandlerClass)
self.socket = socket.socket(self.address_family,
self.socket_type)
if bind_and_activate:
try:
self.server_bind()
self.server_activate()
except:
self.server_close()
raise
def server_bind(self):
"""Called by constructor to bind the socket.
May be overridden.
"""
if self.allow_reuse_address:
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.socket.bind(self.server_address)
self.server_address = self.socket.getsockname()
def server_activate(self):
"""Called by constructor to activate the server.
May be overridden.
"""
self.socket.listen(self.request_queue_size)
def server_close(self):
"""Called to clean-up the server.
May be overridden.
"""
self.socket.close()
def fileno(self):
"""Return socket file number.
Interface required by selector.
"""
return self.socket.fileno()
def get_request(self):
"""Get the request and client address from the socket.
May be overridden.
"""
return self.socket.accept()
def shutdown_request(self, request):
"""Called to shutdown and close an individual request."""
try:
#explicitly shutdown. socket.close() merely releases
#the socket and waits for GC to perform the actual close.
request.shutdown(socket.SHUT_WR)
except OSError:
pass #some platforms may raise ENOTCONN here
self.close_request(request)
def close_request(self, request):
"""Called to clean up an individual request."""
request.close()
class UDPServer(TCPServer):
"""UDP server class."""
allow_reuse_address = False
socket_type = socket.SOCK_DGRAM
max_packet_size = 8192
def get_request(self):
data, client_addr = self.socket.recvfrom(self.max_packet_size)
return (data, self.socket), client_addr
def server_activate(self):
# No need to call listen() for UDP.
pass
def shutdown_request(self, request):
# No need to shutdown anything.
self.close_request(request)
def close_request(self, request):
# No need to close anything.
pass
if hasattr(os, "fork"):
class ForkingMixIn:
"""Mix-in class to handle each request in a new process."""
timeout = 300
active_children = None
max_children = 40
# If true, server_close() waits until all child processes complete.
_block_on_close = False
def collect_children(self, *, blocking=False):
"""Internal routine to wait for children that have exited."""
if self.active_children is None:
return
# If we're above the max number of children, wait and reap them until
# we go back below threshold. Note that we use waitpid(-1) below to be
# able to collect children in size(<defunct children>) syscalls instead
# of size(<children>): the downside is that this might reap children
# which we didn't spawn, which is why we only resort to this when we're
# above max_children.
while len(self.active_children) >= self.max_children:
try:
pid, _ = os.waitpid(-1, 0)
self.active_children.discard(pid)
except ChildProcessError:
# we don't have any children, we're done
self.active_children.clear()
except OSError:
break
# Now reap all defunct children.
for pid in self.active_children.copy():
try:
flags = 0 if blocking else os.WNOHANG
pid, _ = os.waitpid(pid, flags)
# if the child hasn't exited yet, pid will be 0 and ignored by
# discard() below
self.active_children.discard(pid)
except ChildProcessError:
# someone else reaped it
self.active_children.discard(pid)
except OSError:
pass
def handle_timeout(self):
"""Wait for zombies after self.timeout seconds of inactivity.
May be extended, do not override.
"""
self.collect_children()
def service_actions(self):
"""Collect the zombie child processes regularly in the ForkingMixIn.
service_actions is called in the BaseServer's serve_forver loop.
"""
self.collect_children()
def process_request(self, request, client_address):
"""Fork a new subprocess to process the request."""
pid = os.fork()
if pid:
# Parent process
if self.active_children is None:
self.active_children = set()
self.active_children.add(pid)
self.close_request(request)
return
else:
# Child process.
# This must never return, hence os._exit()!
status = 1
try:
self.finish_request(request, client_address)
status = 0
except Exception:
self.handle_error(request, client_address)
finally:
try:
self.shutdown_request(request)
finally:
os._exit(status)
def server_close(self):
super().server_close()
self.collect_children(blocking=self._block_on_close)
class ThreadingMixIn:
"""Mix-in class to handle each request in a new thread."""
# Decides how threads will act upon termination of the
# main process
daemon_threads = False
# If true, server_close() waits until all non-daemonic threads terminate.
_block_on_close = False
# For non-daemonic threads, list of threading.Threading objects
# used by server_close() to wait for all threads completion.
_threads = None
def process_request_thread(self, request, client_address):
"""Same as in BaseServer but as a thread.
In addition, exception handling is done here.
"""
try:
self.finish_request(request, client_address)
except Exception:
self.handle_error(request, client_address)
finally:
self.shutdown_request(request)
def process_request(self, request, client_address):
"""Start a new thread to process the request."""
t = threading.Thread(target = self.process_request_thread,
args = (request, client_address))
t.daemon = self.daemon_threads
if not t.daemon and self._block_on_close:
if self._threads is None:
self._threads = []
self._threads.append(t)
t.start()
def server_close(self):
super().server_close()
if self._block_on_close:
threads = self._threads
self._threads = None
if threads:
for thread in threads:
thread.join()
if hasattr(os, "fork"):
class ForkingUDPServer(ForkingMixIn, UDPServer): pass
class ForkingTCPServer(ForkingMixIn, TCPServer): pass
class ThreadingUDPServer(ThreadingMixIn, UDPServer): pass
class ThreadingTCPServer(ThreadingMixIn, TCPServer): pass
if hasattr(socket, 'AF_UNIX'):
class UnixStreamServer(TCPServer):
address_family = socket.AF_UNIX
class UnixDatagramServer(UDPServer):
address_family = socket.AF_UNIX
class ThreadingUnixStreamServer(ThreadingMixIn, UnixStreamServer): pass
class ThreadingUnixDatagramServer(ThreadingMixIn, UnixDatagramServer): pass
class BaseRequestHandler:
"""Base class for request handler classes.
This class is instantiated for each request to be handled. The
constructor sets the instance variables request, client_address
and server, and then calls the handle() method. To implement a
specific service, all you need to do is to derive a class which
defines a handle() method.
The handle() method can find the request as self.request, the
client address as self.client_address, and the server (in case it
needs access to per-server information) as self.server. Since a
separate instance is created for each request, the handle() method
can define other arbitrary instance variables.
"""
def __init__(self, request, client_address, server):
self.request = request
self.client_address = client_address
self.server = server
self.setup()
try:
self.handle()
finally:
self.finish()
def setup(self):
pass
def handle(self):
pass
def finish(self):
pass
# The following two classes make it possible to use the same service
# class for stream or datagram servers.
# Each class sets up these instance variables:
# - rfile: a file object from which receives the request is read
# - wfile: a file object to which the reply is written
# When the handle() method returns, wfile is flushed properly
class StreamRequestHandler(BaseRequestHandler):
"""Define self.rfile and self.wfile for stream sockets."""
# Default buffer sizes for rfile, wfile.
# We default rfile to buffered because otherwise it could be
# really slow for large data (a getc() call per byte); we make
# wfile unbuffered because (a) often after a write() we want to
# read and we need to flush the line; (b) big writes to unbuffered
# files are typically optimized by stdio even when big reads
# aren't.
rbufsize = -1
wbufsize = 0
# A timeout to apply to the request socket, if not None.
timeout = None
# Disable nagle algorithm for this socket, if True.
# Use only when wbufsize != 0, to avoid small packets.
disable_nagle_algorithm = False
def setup(self):
self.connection = self.request
if self.timeout is not None:
self.connection.settimeout(self.timeout)
if self.disable_nagle_algorithm:
self.connection.setsockopt(socket.IPPROTO_TCP,
socket.TCP_NODELAY, True)
self.rfile = self.connection.makefile('rb', self.rbufsize)
if self.wbufsize == 0:
self.wfile = _SocketWriter(self.connection)
else:
self.wfile = self.connection.makefile('wb', self.wbufsize)
def finish(self):
if not self.wfile.closed:
try:
self.wfile.flush()
except socket.error:
# A final socket error may have occurred here, such as
# the local error ECONNABORTED.
pass
self.wfile.close()
self.rfile.close()
class _SocketWriter(BufferedIOBase):
"""Simple writable BufferedIOBase implementation for a socket
Does not hold data in a buffer, avoiding any need to call flush()."""
def __init__(self, sock):
self._sock = sock
def writable(self):
return True
def write(self, b):
self._sock.sendall(b)
with memoryview(b) as view:
return view.nbytes
def fileno(self):
return self._sock.fileno()
class DatagramRequestHandler(BaseRequestHandler):
"""Define self.rfile and self.wfile for datagram sockets."""
def setup(self):
from io import BytesIO
self.packet, self.socket = self.request
self.rfile = BytesIO(self.packet)
self.wfile = BytesIO()
def finish(self):
self.socket.sendto(self.wfile.getvalue(), self.client_address)
| 27,010 | 822 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/mailbox.py | """Read/write support for Maildir, mbox, MH, Babyl, and MMDF mailboxes."""
# Notes for authors of new mailbox subclasses:
#
# Remember to fsync() changes to disk before closing a modified file
# or returning from a flush() method. See functions _sync_flush() and
# _sync_close().
import os
import time
import calendar
import socket
import errno
import copy
import warnings
import email
import email.message
import email.generator
import io
import contextlib
try:
import fcntl
except ImportError:
fcntl = None
__all__ = ['Mailbox', 'Maildir', 'mbox', 'MH', 'Babyl', 'MMDF',
'Message', 'MaildirMessage', 'mboxMessage', 'MHMessage',
'BabylMessage', 'MMDFMessage', 'Error', 'NoSuchMailboxError',
'NotEmptyError', 'ExternalClashError', 'FormatError']
linesep = os.linesep.encode('ascii')
class Mailbox:
"""A group of messages in a particular place."""
def __init__(self, path, factory=None, create=True):
"""Initialize a Mailbox instance."""
self._path = os.path.abspath(os.path.expanduser(path))
self._factory = factory
def add(self, message):
"""Add message and return assigned key."""
raise NotImplementedError('Method must be implemented by subclass')
def remove(self, key):
"""Remove the keyed message; raise KeyError if it doesn't exist."""
raise NotImplementedError('Method must be implemented by subclass')
def __delitem__(self, key):
self.remove(key)
def discard(self, key):
"""If the keyed message exists, remove it."""
try:
self.remove(key)
except KeyError:
pass
def __setitem__(self, key, message):
"""Replace the keyed message; raise KeyError if it doesn't exist."""
raise NotImplementedError('Method must be implemented by subclass')
def get(self, key, default=None):
"""Return the keyed message, or default if it doesn't exist."""
try:
return self.__getitem__(key)
except KeyError:
return default
def __getitem__(self, key):
"""Return the keyed message; raise KeyError if it doesn't exist."""
if not self._factory:
return self.get_message(key)
else:
with contextlib.closing(self.get_file(key)) as file:
return self._factory(file)
def get_message(self, key):
"""Return a Message representation or raise a KeyError."""
raise NotImplementedError('Method must be implemented by subclass')
def get_string(self, key):
"""Return a string representation or raise a KeyError.
Uses email.message.Message to create a 7bit clean string
representation of the message."""
return email.message_from_bytes(self.get_bytes(key)).as_string()
def get_bytes(self, key):
"""Return a byte string representation or raise a KeyError."""
raise NotImplementedError('Method must be implemented by subclass')
def get_file(self, key):
"""Return a file-like representation or raise a KeyError."""
raise NotImplementedError('Method must be implemented by subclass')
def iterkeys(self):
"""Return an iterator over keys."""
raise NotImplementedError('Method must be implemented by subclass')
def keys(self):
"""Return a list of keys."""
return list(self.iterkeys())
def itervalues(self):
"""Return an iterator over all messages."""
for key in self.iterkeys():
try:
value = self[key]
except KeyError:
continue
yield value
def __iter__(self):
return self.itervalues()
def values(self):
"""Return a list of messages. Memory intensive."""
return list(self.itervalues())
def iteritems(self):
"""Return an iterator over (key, message) tuples."""
for key in self.iterkeys():
try:
value = self[key]
except KeyError:
continue
yield (key, value)
def items(self):
"""Return a list of (key, message) tuples. Memory intensive."""
return list(self.iteritems())
def __contains__(self, key):
"""Return True if the keyed message exists, False otherwise."""
raise NotImplementedError('Method must be implemented by subclass')
def __len__(self):
"""Return a count of messages in the mailbox."""
raise NotImplementedError('Method must be implemented by subclass')
def clear(self):
"""Delete all messages."""
for key in self.keys():
self.discard(key)
def pop(self, key, default=None):
"""Delete the keyed message and return it, or default."""
try:
result = self[key]
except KeyError:
return default
self.discard(key)
return result
def popitem(self):
"""Delete an arbitrary (key, message) pair and return it."""
for key in self.iterkeys():
return (key, self.pop(key)) # This is only run once.
else:
raise KeyError('No messages in mailbox')
def update(self, arg=None):
"""Change the messages that correspond to certain keys."""
if hasattr(arg, 'iteritems'):
source = arg.iteritems()
elif hasattr(arg, 'items'):
source = arg.items()
else:
source = arg
bad_key = False
for key, message in source:
try:
self[key] = message
except KeyError:
bad_key = True
if bad_key:
raise KeyError('No message with key(s)')
def flush(self):
"""Write any pending changes to the disk."""
raise NotImplementedError('Method must be implemented by subclass')
def lock(self):
"""Lock the mailbox."""
raise NotImplementedError('Method must be implemented by subclass')
def unlock(self):
"""Unlock the mailbox if it is locked."""
raise NotImplementedError('Method must be implemented by subclass')
def close(self):
"""Flush and close the mailbox."""
raise NotImplementedError('Method must be implemented by subclass')
def _string_to_bytes(self, message):
# If a message is not 7bit clean, we refuse to handle it since it
# likely came from reading invalid messages in text mode, and that way
# lies mojibake.
try:
return message.encode('ascii')
except UnicodeError:
raise ValueError("String input must be ASCII-only; "
"use bytes or a Message instead")
# Whether each message must end in a newline
_append_newline = False
def _dump_message(self, message, target, mangle_from_=False):
# This assumes the target file is open in binary mode.
"""Dump message contents to target file."""
if isinstance(message, email.message.Message):
buffer = io.BytesIO()
gen = email.generator.BytesGenerator(buffer, mangle_from_, 0)
gen.flatten(message)
buffer.seek(0)
data = buffer.read()
data = data.replace(b'\n', linesep)
target.write(data)
if self._append_newline and not data.endswith(linesep):
# Make sure the message ends with a newline
target.write(linesep)
elif isinstance(message, (str, bytes, io.StringIO)):
if isinstance(message, io.StringIO):
warnings.warn("Use of StringIO input is deprecated, "
"use BytesIO instead", DeprecationWarning, 3)
message = message.getvalue()
if isinstance(message, str):
message = self._string_to_bytes(message)
if mangle_from_:
message = message.replace(b'\nFrom ', b'\n>From ')
message = message.replace(b'\n', linesep)
target.write(message)
if self._append_newline and not message.endswith(linesep):
# Make sure the message ends with a newline
target.write(linesep)
elif hasattr(message, 'read'):
if hasattr(message, 'buffer'):
warnings.warn("Use of text mode files is deprecated, "
"use a binary mode file instead", DeprecationWarning, 3)
message = message.buffer
lastline = None
while True:
line = message.readline()
# Universal newline support.
if line.endswith(b'\r\n'):
line = line[:-2] + b'\n'
elif line.endswith(b'\r'):
line = line[:-1] + b'\n'
if not line:
break
if mangle_from_ and line.startswith(b'From '):
line = b'>From ' + line[5:]
line = line.replace(b'\n', linesep)
target.write(line)
lastline = line
if self._append_newline and lastline and not lastline.endswith(linesep):
# Make sure the message ends with a newline
target.write(linesep)
else:
raise TypeError('Invalid message type: %s' % type(message))
class Maildir(Mailbox):
"""A qmail-style Maildir mailbox."""
colon = ':'
def __init__(self, dirname, factory=None, create=True):
"""Initialize a Maildir instance."""
Mailbox.__init__(self, dirname, factory, create)
self._paths = {
'tmp': os.path.join(self._path, 'tmp'),
'new': os.path.join(self._path, 'new'),
'cur': os.path.join(self._path, 'cur'),
}
if not os.path.exists(self._path):
if create:
os.mkdir(self._path, 0o700)
for path in self._paths.values():
os.mkdir(path, 0o700)
else:
raise NoSuchMailboxError(self._path)
self._toc = {}
self._toc_mtimes = {'cur': 0, 'new': 0}
self._last_read = 0 # Records last time we read cur/new
self._skewfactor = 0.1 # Adjust if os/fs clocks are skewing
def add(self, message):
"""Add message and return assigned key."""
tmp_file = self._create_tmp()
try:
self._dump_message(message, tmp_file)
except BaseException:
tmp_file.close()
os.remove(tmp_file.name)
raise
_sync_close(tmp_file)
if isinstance(message, MaildirMessage):
subdir = message.get_subdir()
suffix = self.colon + message.get_info()
if suffix == self.colon:
suffix = ''
else:
subdir = 'new'
suffix = ''
uniq = os.path.basename(tmp_file.name).split(self.colon)[0]
dest = os.path.join(self._path, subdir, uniq + suffix)
if isinstance(message, MaildirMessage):
os.utime(tmp_file.name,
(os.path.getatime(tmp_file.name), message.get_date()))
# No file modification should be done after the file is moved to its
# final position in order to prevent race conditions with changes
# from other programs
try:
try:
os.link(tmp_file.name, dest)
except (AttributeError, PermissionError):
os.rename(tmp_file.name, dest)
else:
os.remove(tmp_file.name)
except OSError as e:
os.remove(tmp_file.name)
if e.errno == errno.EEXIST:
raise ExternalClashError('Name clash with existing message: %s'
% dest)
else:
raise
return uniq
def remove(self, key):
"""Remove the keyed message; raise KeyError if it doesn't exist."""
os.remove(os.path.join(self._path, self._lookup(key)))
def discard(self, key):
"""If the keyed message exists, remove it."""
# This overrides an inapplicable implementation in the superclass.
try:
self.remove(key)
except (KeyError, FileNotFoundError):
pass
def __setitem__(self, key, message):
"""Replace the keyed message; raise KeyError if it doesn't exist."""
old_subpath = self._lookup(key)
temp_key = self.add(message)
temp_subpath = self._lookup(temp_key)
if isinstance(message, MaildirMessage):
# temp's subdir and suffix were specified by message.
dominant_subpath = temp_subpath
else:
# temp's subdir and suffix were defaults from add().
dominant_subpath = old_subpath
subdir = os.path.dirname(dominant_subpath)
if self.colon in dominant_subpath:
suffix = self.colon + dominant_subpath.split(self.colon)[-1]
else:
suffix = ''
self.discard(key)
tmp_path = os.path.join(self._path, temp_subpath)
new_path = os.path.join(self._path, subdir, key + suffix)
if isinstance(message, MaildirMessage):
os.utime(tmp_path,
(os.path.getatime(tmp_path), message.get_date()))
# No file modification should be done after the file is moved to its
# final position in order to prevent race conditions with changes
# from other programs
os.rename(tmp_path, new_path)
def get_message(self, key):
"""Return a Message representation or raise a KeyError."""
subpath = self._lookup(key)
with open(os.path.join(self._path, subpath), 'rb') as f:
if self._factory:
msg = self._factory(f)
else:
msg = MaildirMessage(f)
subdir, name = os.path.split(subpath)
msg.set_subdir(subdir)
if self.colon in name:
msg.set_info(name.split(self.colon)[-1])
msg.set_date(os.path.getmtime(os.path.join(self._path, subpath)))
return msg
def get_bytes(self, key):
"""Return a bytes representation or raise a KeyError."""
with open(os.path.join(self._path, self._lookup(key)), 'rb') as f:
return f.read().replace(linesep, b'\n')
def get_file(self, key):
"""Return a file-like representation or raise a KeyError."""
f = open(os.path.join(self._path, self._lookup(key)), 'rb')
return _ProxyFile(f)
def iterkeys(self):
"""Return an iterator over keys."""
self._refresh()
for key in self._toc:
try:
self._lookup(key)
except KeyError:
continue
yield key
def __contains__(self, key):
"""Return True if the keyed message exists, False otherwise."""
self._refresh()
return key in self._toc
def __len__(self):
"""Return a count of messages in the mailbox."""
self._refresh()
return len(self._toc)
def flush(self):
"""Write any pending changes to disk."""
# Maildir changes are always written immediately, so there's nothing
# to do.
pass
def lock(self):
"""Lock the mailbox."""
return
def unlock(self):
"""Unlock the mailbox if it is locked."""
return
def close(self):
"""Flush and close the mailbox."""
return
def list_folders(self):
"""Return a list of folder names."""
result = []
for entry in os.listdir(self._path):
if len(entry) > 1 and entry[0] == '.' and \
os.path.isdir(os.path.join(self._path, entry)):
result.append(entry[1:])
return result
def get_folder(self, folder):
"""Return a Maildir instance for the named folder."""
return Maildir(os.path.join(self._path, '.' + folder),
factory=self._factory,
create=False)
def add_folder(self, folder):
"""Create a folder and return a Maildir instance representing it."""
path = os.path.join(self._path, '.' + folder)
result = Maildir(path, factory=self._factory)
maildirfolder_path = os.path.join(path, 'maildirfolder')
if not os.path.exists(maildirfolder_path):
os.close(os.open(maildirfolder_path, os.O_CREAT | os.O_WRONLY,
0o666))
return result
def remove_folder(self, folder):
"""Delete the named folder, which must be empty."""
path = os.path.join(self._path, '.' + folder)
for entry in os.listdir(os.path.join(path, 'new')) + \
os.listdir(os.path.join(path, 'cur')):
if len(entry) < 1 or entry[0] != '.':
raise NotEmptyError('Folder contains message(s): %s' % folder)
for entry in os.listdir(path):
if entry != 'new' and entry != 'cur' and entry != 'tmp' and \
os.path.isdir(os.path.join(path, entry)):
raise NotEmptyError("Folder contains subdirectory '%s': %s" %
(folder, entry))
for root, dirs, files in os.walk(path, topdown=False):
for entry in files:
os.remove(os.path.join(root, entry))
for entry in dirs:
os.rmdir(os.path.join(root, entry))
os.rmdir(path)
def clean(self):
"""Delete old files in "tmp"."""
now = time.time()
for entry in os.listdir(os.path.join(self._path, 'tmp')):
path = os.path.join(self._path, 'tmp', entry)
if now - os.path.getatime(path) > 129600: # 60 * 60 * 36
os.remove(path)
_count = 1 # This is used to generate unique file names.
def _create_tmp(self):
"""Create a file in the tmp subdirectory and open and return it."""
now = time.time()
hostname = socket.gethostname()
if '/' in hostname:
hostname = hostname.replace('/', r'\057')
if ':' in hostname:
hostname = hostname.replace(':', r'\072')
uniq = "%s.M%sP%sQ%s.%s" % (int(now), int(now % 1 * 1e6), os.getpid(),
Maildir._count, hostname)
path = os.path.join(self._path, 'tmp', uniq)
try:
os.stat(path)
except FileNotFoundError:
Maildir._count += 1
try:
return _create_carefully(path)
except FileExistsError:
pass
# Fall through to here if stat succeeded or open raised EEXIST.
raise ExternalClashError('Name clash prevented file creation: %s' %
path)
def _refresh(self):
"""Update table of contents mapping."""
# If it has been less than two seconds since the last _refresh() call,
# we have to unconditionally re-read the mailbox just in case it has
# been modified, because os.path.mtime() has a 2 sec resolution in the
# most common worst case (FAT) and a 1 sec resolution typically. This
# results in a few unnecessary re-reads when _refresh() is called
# multiple times in that interval, but once the clock ticks over, we
# will only re-read as needed. Because the filesystem might be being
# served by an independent system with its own clock, we record and
# compare with the mtimes from the filesystem. Because the other
# system's clock might be skewing relative to our clock, we add an
# extra delta to our wait. The default is one tenth second, but is an
# instance variable and so can be adjusted if dealing with a
# particularly skewed or irregular system.
if time.time() - self._last_read > 2 + self._skewfactor:
refresh = False
for subdir in self._toc_mtimes:
mtime = os.path.getmtime(self._paths[subdir])
if mtime > self._toc_mtimes[subdir]:
refresh = True
self._toc_mtimes[subdir] = mtime
if not refresh:
return
# Refresh toc
self._toc = {}
for subdir in self._toc_mtimes:
path = self._paths[subdir]
for entry in os.listdir(path):
p = os.path.join(path, entry)
if os.path.isdir(p):
continue
uniq = entry.split(self.colon)[0]
self._toc[uniq] = os.path.join(subdir, entry)
self._last_read = time.time()
def _lookup(self, key):
"""Use TOC to return subpath for given key, or raise a KeyError."""
try:
if os.path.exists(os.path.join(self._path, self._toc[key])):
return self._toc[key]
except KeyError:
pass
self._refresh()
try:
return self._toc[key]
except KeyError:
raise KeyError('No message with key: %s' % key)
# This method is for backward compatibility only.
def next(self):
"""Return the next message in a one-time iteration."""
if not hasattr(self, '_onetime_keys'):
self._onetime_keys = self.iterkeys()
while True:
try:
return self[next(self._onetime_keys)]
except StopIteration:
return None
except KeyError:
continue
class _singlefileMailbox(Mailbox):
"""A single-file mailbox."""
def __init__(self, path, factory=None, create=True):
"""Initialize a single-file mailbox."""
Mailbox.__init__(self, path, factory, create)
try:
f = open(self._path, 'rb+')
except OSError as e:
if e.errno == errno.ENOENT:
if create:
f = open(self._path, 'wb+')
else:
raise NoSuchMailboxError(self._path)
elif e.errno in (errno.EACCES, errno.EROFS):
f = open(self._path, 'rb')
else:
raise
self._file = f
self._toc = None
self._next_key = 0
self._pending = False # No changes require rewriting the file.
self._pending_sync = False # No need to sync the file
self._locked = False
self._file_length = None # Used to record mailbox size
def add(self, message):
"""Add message and return assigned key."""
self._lookup()
self._toc[self._next_key] = self._append_message(message)
self._next_key += 1
# _append_message appends the message to the mailbox file. We
# don't need a full rewrite + rename, sync is enough.
self._pending_sync = True
return self._next_key - 1
def remove(self, key):
"""Remove the keyed message; raise KeyError if it doesn't exist."""
self._lookup(key)
del self._toc[key]
self._pending = True
def __setitem__(self, key, message):
"""Replace the keyed message; raise KeyError if it doesn't exist."""
self._lookup(key)
self._toc[key] = self._append_message(message)
self._pending = True
def iterkeys(self):
"""Return an iterator over keys."""
self._lookup()
yield from self._toc.keys()
def __contains__(self, key):
"""Return True if the keyed message exists, False otherwise."""
self._lookup()
return key in self._toc
def __len__(self):
"""Return a count of messages in the mailbox."""
self._lookup()
return len(self._toc)
def lock(self):
"""Lock the mailbox."""
if not self._locked:
_lock_file(self._file)
self._locked = True
def unlock(self):
"""Unlock the mailbox if it is locked."""
if self._locked:
_unlock_file(self._file)
self._locked = False
def flush(self):
"""Write any pending changes to disk."""
if not self._pending:
if self._pending_sync:
# Messages have only been added, so syncing the file
# is enough.
_sync_flush(self._file)
self._pending_sync = False
return
# In order to be writing anything out at all, self._toc must
# already have been generated (and presumably has been modified
# by adding or deleting an item).
assert self._toc is not None
# Check length of self._file; if it's changed, some other process
# has modified the mailbox since we scanned it.
self._file.seek(0, 2)
cur_len = self._file.tell()
if cur_len != self._file_length:
raise ExternalClashError('Size of mailbox file changed '
'(expected %i, found %i)' %
(self._file_length, cur_len))
new_file = _create_temporary(self._path)
try:
new_toc = {}
self._pre_mailbox_hook(new_file)
for key in sorted(self._toc.keys()):
start, stop = self._toc[key]
self._file.seek(start)
self._pre_message_hook(new_file)
new_start = new_file.tell()
while True:
buffer = self._file.read(min(4096,
stop - self._file.tell()))
if not buffer:
break
new_file.write(buffer)
new_toc[key] = (new_start, new_file.tell())
self._post_message_hook(new_file)
self._file_length = new_file.tell()
except:
new_file.close()
os.remove(new_file.name)
raise
_sync_close(new_file)
# self._file is about to get replaced, so no need to sync.
self._file.close()
# Make sure the new file's mode is the same as the old file's
mode = os.stat(self._path).st_mode
os.chmod(new_file.name, mode)
try:
os.rename(new_file.name, self._path)
except FileExistsError:
os.remove(self._path)
os.rename(new_file.name, self._path)
self._file = open(self._path, 'rb+')
self._toc = new_toc
self._pending = False
self._pending_sync = False
if self._locked:
_lock_file(self._file, dotlock=False)
def _pre_mailbox_hook(self, f):
"""Called before writing the mailbox to file f."""
return
def _pre_message_hook(self, f):
"""Called before writing each message to file f."""
return
def _post_message_hook(self, f):
"""Called after writing each message to file f."""
return
def close(self):
"""Flush and close the mailbox."""
try:
self.flush()
finally:
try:
if self._locked:
self.unlock()
finally:
self._file.close() # Sync has been done by self.flush() above.
def _lookup(self, key=None):
"""Return (start, stop) or raise KeyError."""
if self._toc is None:
self._generate_toc()
if key is not None:
try:
return self._toc[key]
except KeyError:
raise KeyError('No message with key: %s' % key)
def _append_message(self, message):
"""Append message to mailbox and return (start, stop) offsets."""
self._file.seek(0, 2)
before = self._file.tell()
if len(self._toc) == 0 and not self._pending:
# This is the first message, and the _pre_mailbox_hook
# hasn't yet been called. If self._pending is True,
# messages have been removed, so _pre_mailbox_hook must
# have been called already.
self._pre_mailbox_hook(self._file)
try:
self._pre_message_hook(self._file)
offsets = self._install_message(message)
self._post_message_hook(self._file)
except BaseException:
self._file.truncate(before)
raise
self._file.flush()
self._file_length = self._file.tell() # Record current length of mailbox
return offsets
class _mboxMMDF(_singlefileMailbox):
"""An mbox or MMDF mailbox."""
_mangle_from_ = True
def get_message(self, key):
"""Return a Message representation or raise a KeyError."""
start, stop = self._lookup(key)
self._file.seek(start)
from_line = self._file.readline().replace(linesep, b'')
string = self._file.read(stop - self._file.tell())
msg = self._message_factory(string.replace(linesep, b'\n'))
msg.set_from(from_line[5:].decode('ascii'))
return msg
def get_string(self, key, from_=False):
"""Return a string representation or raise a KeyError."""
return email.message_from_bytes(
self.get_bytes(key)).as_string(unixfrom=from_)
def get_bytes(self, key, from_=False):
"""Return a string representation or raise a KeyError."""
start, stop = self._lookup(key)
self._file.seek(start)
if not from_:
self._file.readline()
string = self._file.read(stop - self._file.tell())
return string.replace(linesep, b'\n')
def get_file(self, key, from_=False):
"""Return a file-like representation or raise a KeyError."""
start, stop = self._lookup(key)
self._file.seek(start)
if not from_:
self._file.readline()
return _PartialFile(self._file, self._file.tell(), stop)
def _install_message(self, message):
"""Format a message and blindly write to self._file."""
from_line = None
if isinstance(message, str):
message = self._string_to_bytes(message)
if isinstance(message, bytes) and message.startswith(b'From '):
newline = message.find(b'\n')
if newline != -1:
from_line = message[:newline]
message = message[newline + 1:]
else:
from_line = message
message = b''
elif isinstance(message, _mboxMMDFMessage):
author = message.get_from().encode('ascii')
from_line = b'From ' + author
elif isinstance(message, email.message.Message):
from_line = message.get_unixfrom() # May be None.
if from_line is not None:
from_line = from_line.encode('ascii')
if from_line is None:
from_line = b'From MAILER-DAEMON ' + time.asctime(time.gmtime()).encode()
start = self._file.tell()
self._file.write(from_line + linesep)
self._dump_message(message, self._file, self._mangle_from_)
stop = self._file.tell()
return (start, stop)
class mbox(_mboxMMDF):
"""A classic mbox mailbox."""
_mangle_from_ = True
# All messages must end in a newline character, and
# _post_message_hooks outputs an empty line between messages.
_append_newline = True
def __init__(self, path, factory=None, create=True):
"""Initialize an mbox mailbox."""
self._message_factory = mboxMessage
_mboxMMDF.__init__(self, path, factory, create)
def _post_message_hook(self, f):
"""Called after writing each message to file f."""
f.write(linesep)
def _generate_toc(self):
"""Generate key-to-(start, stop) table of contents."""
starts, stops = [], []
last_was_empty = False
self._file.seek(0)
while True:
line_pos = self._file.tell()
line = self._file.readline()
if line.startswith(b'From '):
if len(stops) < len(starts):
if last_was_empty:
stops.append(line_pos - len(linesep))
else:
# The last line before the "From " line wasn't
# blank, but we consider it a start of a
# message anyway.
stops.append(line_pos)
starts.append(line_pos)
last_was_empty = False
elif not line:
if last_was_empty:
stops.append(line_pos - len(linesep))
else:
stops.append(line_pos)
break
elif line == linesep:
last_was_empty = True
else:
last_was_empty = False
self._toc = dict(enumerate(zip(starts, stops)))
self._next_key = len(self._toc)
self._file_length = self._file.tell()
class MMDF(_mboxMMDF):
"""An MMDF mailbox."""
def __init__(self, path, factory=None, create=True):
"""Initialize an MMDF mailbox."""
self._message_factory = MMDFMessage
_mboxMMDF.__init__(self, path, factory, create)
def _pre_message_hook(self, f):
"""Called before writing each message to file f."""
f.write(b'\001\001\001\001' + linesep)
def _post_message_hook(self, f):
"""Called after writing each message to file f."""
f.write(linesep + b'\001\001\001\001' + linesep)
def _generate_toc(self):
"""Generate key-to-(start, stop) table of contents."""
starts, stops = [], []
self._file.seek(0)
next_pos = 0
while True:
line_pos = next_pos
line = self._file.readline()
next_pos = self._file.tell()
if line.startswith(b'\001\001\001\001' + linesep):
starts.append(next_pos)
while True:
line_pos = next_pos
line = self._file.readline()
next_pos = self._file.tell()
if line == b'\001\001\001\001' + linesep:
stops.append(line_pos - len(linesep))
break
elif not line:
stops.append(line_pos)
break
elif not line:
break
self._toc = dict(enumerate(zip(starts, stops)))
self._next_key = len(self._toc)
self._file.seek(0, 2)
self._file_length = self._file.tell()
class MH(Mailbox):
"""An MH mailbox."""
def __init__(self, path, factory=None, create=True):
"""Initialize an MH instance."""
Mailbox.__init__(self, path, factory, create)
if not os.path.exists(self._path):
if create:
os.mkdir(self._path, 0o700)
os.close(os.open(os.path.join(self._path, '.mh_sequences'),
os.O_CREAT | os.O_EXCL | os.O_WRONLY, 0o600))
else:
raise NoSuchMailboxError(self._path)
self._locked = False
def add(self, message):
"""Add message and return assigned key."""
keys = self.keys()
if len(keys) == 0:
new_key = 1
else:
new_key = max(keys) + 1
new_path = os.path.join(self._path, str(new_key))
f = _create_carefully(new_path)
closed = False
try:
if self._locked:
_lock_file(f)
try:
try:
self._dump_message(message, f)
except BaseException:
# Unlock and close so it can be deleted on Windows
if self._locked:
_unlock_file(f)
_sync_close(f)
closed = True
os.remove(new_path)
raise
if isinstance(message, MHMessage):
self._dump_sequences(message, new_key)
finally:
if self._locked:
_unlock_file(f)
finally:
if not closed:
_sync_close(f)
return new_key
def remove(self, key):
"""Remove the keyed message; raise KeyError if it doesn't exist."""
path = os.path.join(self._path, str(key))
try:
f = open(path, 'rb+')
except OSError as e:
if e.errno == errno.ENOENT:
raise KeyError('No message with key: %s' % key)
else:
raise
else:
f.close()
os.remove(path)
def __setitem__(self, key, message):
"""Replace the keyed message; raise KeyError if it doesn't exist."""
path = os.path.join(self._path, str(key))
try:
f = open(path, 'rb+')
except OSError as e:
if e.errno == errno.ENOENT:
raise KeyError('No message with key: %s' % key)
else:
raise
try:
if self._locked:
_lock_file(f)
try:
os.close(os.open(path, os.O_WRONLY | os.O_TRUNC))
self._dump_message(message, f)
if isinstance(message, MHMessage):
self._dump_sequences(message, key)
finally:
if self._locked:
_unlock_file(f)
finally:
_sync_close(f)
def get_message(self, key):
"""Return a Message representation or raise a KeyError."""
try:
if self._locked:
f = open(os.path.join(self._path, str(key)), 'rb+')
else:
f = open(os.path.join(self._path, str(key)), 'rb')
except OSError as e:
if e.errno == errno.ENOENT:
raise KeyError('No message with key: %s' % key)
else:
raise
with f:
if self._locked:
_lock_file(f)
try:
msg = MHMessage(f)
finally:
if self._locked:
_unlock_file(f)
for name, key_list in self.get_sequences().items():
if key in key_list:
msg.add_sequence(name)
return msg
def get_bytes(self, key):
"""Return a bytes representation or raise a KeyError."""
try:
if self._locked:
f = open(os.path.join(self._path, str(key)), 'rb+')
else:
f = open(os.path.join(self._path, str(key)), 'rb')
except OSError as e:
if e.errno == errno.ENOENT:
raise KeyError('No message with key: %s' % key)
else:
raise
with f:
if self._locked:
_lock_file(f)
try:
return f.read().replace(linesep, b'\n')
finally:
if self._locked:
_unlock_file(f)
def get_file(self, key):
"""Return a file-like representation or raise a KeyError."""
try:
f = open(os.path.join(self._path, str(key)), 'rb')
except OSError as e:
if e.errno == errno.ENOENT:
raise KeyError('No message with key: %s' % key)
else:
raise
return _ProxyFile(f)
def iterkeys(self):
"""Return an iterator over keys."""
return iter(sorted(int(entry) for entry in os.listdir(self._path)
if entry.isdigit()))
def __contains__(self, key):
"""Return True if the keyed message exists, False otherwise."""
return os.path.exists(os.path.join(self._path, str(key)))
def __len__(self):
"""Return a count of messages in the mailbox."""
return len(list(self.iterkeys()))
def lock(self):
"""Lock the mailbox."""
if not self._locked:
self._file = open(os.path.join(self._path, '.mh_sequences'), 'rb+')
_lock_file(self._file)
self._locked = True
def unlock(self):
"""Unlock the mailbox if it is locked."""
if self._locked:
_unlock_file(self._file)
_sync_close(self._file)
del self._file
self._locked = False
def flush(self):
"""Write any pending changes to the disk."""
return
def close(self):
"""Flush and close the mailbox."""
if self._locked:
self.unlock()
def list_folders(self):
"""Return a list of folder names."""
result = []
for entry in os.listdir(self._path):
if os.path.isdir(os.path.join(self._path, entry)):
result.append(entry)
return result
def get_folder(self, folder):
"""Return an MH instance for the named folder."""
return MH(os.path.join(self._path, folder),
factory=self._factory, create=False)
def add_folder(self, folder):
"""Create a folder and return an MH instance representing it."""
return MH(os.path.join(self._path, folder),
factory=self._factory)
def remove_folder(self, folder):
"""Delete the named folder, which must be empty."""
path = os.path.join(self._path, folder)
entries = os.listdir(path)
if entries == ['.mh_sequences']:
os.remove(os.path.join(path, '.mh_sequences'))
elif entries == []:
pass
else:
raise NotEmptyError('Folder not empty: %s' % self._path)
os.rmdir(path)
def get_sequences(self):
"""Return a name-to-key-list dictionary to define each sequence."""
results = {}
with open(os.path.join(self._path, '.mh_sequences'), 'r', encoding='ASCII') as f:
all_keys = set(self.keys())
for line in f:
try:
name, contents = line.split(':')
keys = set()
for spec in contents.split():
if spec.isdigit():
keys.add(int(spec))
else:
start, stop = (int(x) for x in spec.split('-'))
keys.update(range(start, stop + 1))
results[name] = [key for key in sorted(keys) \
if key in all_keys]
if len(results[name]) == 0:
del results[name]
except ValueError:
raise FormatError('Invalid sequence specification: %s' %
line.rstrip())
return results
def set_sequences(self, sequences):
"""Set sequences using the given name-to-key-list dictionary."""
f = open(os.path.join(self._path, '.mh_sequences'), 'r+', encoding='ASCII')
try:
os.close(os.open(f.name, os.O_WRONLY | os.O_TRUNC))
for name, keys in sequences.items():
if len(keys) == 0:
continue
f.write(name + ':')
prev = None
completing = False
for key in sorted(set(keys)):
if key - 1 == prev:
if not completing:
completing = True
f.write('-')
elif completing:
completing = False
f.write('%s %s' % (prev, key))
else:
f.write(' %s' % key)
prev = key
if completing:
f.write(str(prev) + '\n')
else:
f.write('\n')
finally:
_sync_close(f)
def pack(self):
"""Re-name messages to eliminate numbering gaps. Invalidates keys."""
sequences = self.get_sequences()
prev = 0
changes = []
for key in self.iterkeys():
if key - 1 != prev:
changes.append((key, prev + 1))
try:
os.link(os.path.join(self._path, str(key)),
os.path.join(self._path, str(prev + 1)))
except (AttributeError, PermissionError):
os.rename(os.path.join(self._path, str(key)),
os.path.join(self._path, str(prev + 1)))
else:
os.unlink(os.path.join(self._path, str(key)))
prev += 1
self._next_key = prev + 1
if len(changes) == 0:
return
for name, key_list in sequences.items():
for old, new in changes:
if old in key_list:
key_list[key_list.index(old)] = new
self.set_sequences(sequences)
def _dump_sequences(self, message, key):
"""Inspect a new MHMessage and update sequences appropriately."""
pending_sequences = message.get_sequences()
all_sequences = self.get_sequences()
for name, key_list in all_sequences.items():
if name in pending_sequences:
key_list.append(key)
elif key in key_list:
del key_list[key_list.index(key)]
for sequence in pending_sequences:
if sequence not in all_sequences:
all_sequences[sequence] = [key]
self.set_sequences(all_sequences)
class Babyl(_singlefileMailbox):
"""An Rmail-style Babyl mailbox."""
_special_labels = frozenset({'unseen', 'deleted', 'filed', 'answered',
'forwarded', 'edited', 'resent'})
def __init__(self, path, factory=None, create=True):
"""Initialize a Babyl mailbox."""
_singlefileMailbox.__init__(self, path, factory, create)
self._labels = {}
def add(self, message):
"""Add message and return assigned key."""
key = _singlefileMailbox.add(self, message)
if isinstance(message, BabylMessage):
self._labels[key] = message.get_labels()
return key
def remove(self, key):
"""Remove the keyed message; raise KeyError if it doesn't exist."""
_singlefileMailbox.remove(self, key)
if key in self._labels:
del self._labels[key]
def __setitem__(self, key, message):
"""Replace the keyed message; raise KeyError if it doesn't exist."""
_singlefileMailbox.__setitem__(self, key, message)
if isinstance(message, BabylMessage):
self._labels[key] = message.get_labels()
def get_message(self, key):
"""Return a Message representation or raise a KeyError."""
start, stop = self._lookup(key)
self._file.seek(start)
self._file.readline() # Skip b'1,' line specifying labels.
original_headers = io.BytesIO()
while True:
line = self._file.readline()
if line == b'*** EOOH ***' + linesep or not line:
break
original_headers.write(line.replace(linesep, b'\n'))
visible_headers = io.BytesIO()
while True:
line = self._file.readline()
if line == linesep or not line:
break
visible_headers.write(line.replace(linesep, b'\n'))
# Read up to the stop, or to the end
n = stop - self._file.tell()
assert n >= 0
body = self._file.read(n)
body = body.replace(linesep, b'\n')
msg = BabylMessage(original_headers.getvalue() + body)
msg.set_visible(visible_headers.getvalue())
if key in self._labels:
msg.set_labels(self._labels[key])
return msg
def get_bytes(self, key):
"""Return a string representation or raise a KeyError."""
start, stop = self._lookup(key)
self._file.seek(start)
self._file.readline() # Skip b'1,' line specifying labels.
original_headers = io.BytesIO()
while True:
line = self._file.readline()
if line == b'*** EOOH ***' + linesep or not line:
break
original_headers.write(line.replace(linesep, b'\n'))
while True:
line = self._file.readline()
if line == linesep or not line:
break
headers = original_headers.getvalue()
n = stop - self._file.tell()
assert n >= 0
data = self._file.read(n)
data = data.replace(linesep, b'\n')
return headers + data
def get_file(self, key):
"""Return a file-like representation or raise a KeyError."""
return io.BytesIO(self.get_bytes(key).replace(b'\n', linesep))
def get_labels(self):
"""Return a list of user-defined labels in the mailbox."""
self._lookup()
labels = set()
for label_list in self._labels.values():
labels.update(label_list)
labels.difference_update(self._special_labels)
return list(labels)
def _generate_toc(self):
"""Generate key-to-(start, stop) table of contents."""
starts, stops = [], []
self._file.seek(0)
next_pos = 0
label_lists = []
while True:
line_pos = next_pos
line = self._file.readline()
next_pos = self._file.tell()
if line == b'\037\014' + linesep:
if len(stops) < len(starts):
stops.append(line_pos - len(linesep))
starts.append(next_pos)
labels = [label.strip() for label
in self._file.readline()[1:].split(b',')
if label.strip()]
label_lists.append(labels)
elif line == b'\037' or line == b'\037' + linesep:
if len(stops) < len(starts):
stops.append(line_pos - len(linesep))
elif not line:
stops.append(line_pos - len(linesep))
break
self._toc = dict(enumerate(zip(starts, stops)))
self._labels = dict(enumerate(label_lists))
self._next_key = len(self._toc)
self._file.seek(0, 2)
self._file_length = self._file.tell()
def _pre_mailbox_hook(self, f):
"""Called before writing the mailbox to file f."""
babyl = b'BABYL OPTIONS:' + linesep
babyl += b'Version: 5' + linesep
labels = self.get_labels()
labels = (label.encode() for label in labels)
babyl += b'Labels:' + b','.join(labels) + linesep
babyl += b'\037'
f.write(babyl)
def _pre_message_hook(self, f):
"""Called before writing each message to file f."""
f.write(b'\014' + linesep)
def _post_message_hook(self, f):
"""Called after writing each message to file f."""
f.write(linesep + b'\037')
def _install_message(self, message):
"""Write message contents and return (start, stop)."""
start = self._file.tell()
if isinstance(message, BabylMessage):
special_labels = []
labels = []
for label in message.get_labels():
if label in self._special_labels:
special_labels.append(label)
else:
labels.append(label)
self._file.write(b'1')
for label in special_labels:
self._file.write(b', ' + label.encode())
self._file.write(b',,')
for label in labels:
self._file.write(b' ' + label.encode() + b',')
self._file.write(linesep)
else:
self._file.write(b'1,,' + linesep)
if isinstance(message, email.message.Message):
orig_buffer = io.BytesIO()
orig_generator = email.generator.BytesGenerator(orig_buffer, False, 0)
orig_generator.flatten(message)
orig_buffer.seek(0)
while True:
line = orig_buffer.readline()
self._file.write(line.replace(b'\n', linesep))
if line == b'\n' or not line:
break
self._file.write(b'*** EOOH ***' + linesep)
if isinstance(message, BabylMessage):
vis_buffer = io.BytesIO()
vis_generator = email.generator.BytesGenerator(vis_buffer, False, 0)
vis_generator.flatten(message.get_visible())
while True:
line = vis_buffer.readline()
self._file.write(line.replace(b'\n', linesep))
if line == b'\n' or not line:
break
else:
orig_buffer.seek(0)
while True:
line = orig_buffer.readline()
self._file.write(line.replace(b'\n', linesep))
if line == b'\n' or not line:
break
while True:
buffer = orig_buffer.read(4096) # Buffer size is arbitrary.
if not buffer:
break
self._file.write(buffer.replace(b'\n', linesep))
elif isinstance(message, (bytes, str, io.StringIO)):
if isinstance(message, io.StringIO):
warnings.warn("Use of StringIO input is deprecated, "
"use BytesIO instead", DeprecationWarning, 3)
message = message.getvalue()
if isinstance(message, str):
message = self._string_to_bytes(message)
body_start = message.find(b'\n\n') + 2
if body_start - 2 != -1:
self._file.write(message[:body_start].replace(b'\n', linesep))
self._file.write(b'*** EOOH ***' + linesep)
self._file.write(message[:body_start].replace(b'\n', linesep))
self._file.write(message[body_start:].replace(b'\n', linesep))
else:
self._file.write(b'*** EOOH ***' + linesep + linesep)
self._file.write(message.replace(b'\n', linesep))
elif hasattr(message, 'readline'):
if hasattr(message, 'buffer'):
warnings.warn("Use of text mode files is deprecated, "
"use a binary mode file instead", DeprecationWarning, 3)
message = message.buffer
original_pos = message.tell()
first_pass = True
while True:
line = message.readline()
# Universal newline support.
if line.endswith(b'\r\n'):
line = line[:-2] + b'\n'
elif line.endswith(b'\r'):
line = line[:-1] + b'\n'
self._file.write(line.replace(b'\n', linesep))
if line == b'\n' or not line:
if first_pass:
first_pass = False
self._file.write(b'*** EOOH ***' + linesep)
message.seek(original_pos)
else:
break
while True:
line = message.readline()
if not line:
break
# Universal newline support.
if line.endswith(b'\r\n'):
line = line[:-2] + linesep
elif line.endswith(b'\r'):
line = line[:-1] + linesep
elif line.endswith(b'\n'):
line = line[:-1] + linesep
self._file.write(line)
else:
raise TypeError('Invalid message type: %s' % type(message))
stop = self._file.tell()
return (start, stop)
class Message(email.message.Message):
"""Message with mailbox-format-specific properties."""
def __init__(self, message=None):
"""Initialize a Message instance."""
if isinstance(message, email.message.Message):
self._become_message(copy.deepcopy(message))
if isinstance(message, Message):
message._explain_to(self)
elif isinstance(message, bytes):
self._become_message(email.message_from_bytes(message))
elif isinstance(message, str):
self._become_message(email.message_from_string(message))
elif isinstance(message, io.TextIOWrapper):
self._become_message(email.message_from_file(message))
elif hasattr(message, "read"):
self._become_message(email.message_from_binary_file(message))
elif message is None:
email.message.Message.__init__(self)
else:
raise TypeError('Invalid message type: %s' % type(message))
def _become_message(self, message):
"""Assume the non-format-specific state of message."""
type_specific = getattr(message, '_type_specific_attributes', [])
for name in message.__dict__:
if name not in type_specific:
self.__dict__[name] = message.__dict__[name]
def _explain_to(self, message):
"""Copy format-specific state to message insofar as possible."""
if isinstance(message, Message):
return # There's nothing format-specific to explain.
else:
raise TypeError('Cannot convert to specified type')
class MaildirMessage(Message):
"""Message with Maildir-specific properties."""
_type_specific_attributes = ['_subdir', '_info', '_date']
def __init__(self, message=None):
"""Initialize a MaildirMessage instance."""
self._subdir = 'new'
self._info = ''
self._date = time.time()
Message.__init__(self, message)
def get_subdir(self):
"""Return 'new' or 'cur'."""
return self._subdir
def set_subdir(self, subdir):
"""Set subdir to 'new' or 'cur'."""
if subdir == 'new' or subdir == 'cur':
self._subdir = subdir
else:
raise ValueError("subdir must be 'new' or 'cur': %s" % subdir)
def get_flags(self):
"""Return as a string the flags that are set."""
if self._info.startswith('2,'):
return self._info[2:]
else:
return ''
def set_flags(self, flags):
"""Set the given flags and unset all others."""
self._info = '2,' + ''.join(sorted(flags))
def add_flag(self, flag):
"""Set the given flag(s) without changing others."""
self.set_flags(''.join(set(self.get_flags()) | set(flag)))
def remove_flag(self, flag):
"""Unset the given string flag(s) without changing others."""
if self.get_flags():
self.set_flags(''.join(set(self.get_flags()) - set(flag)))
def get_date(self):
"""Return delivery date of message, in seconds since the epoch."""
return self._date
def set_date(self, date):
"""Set delivery date of message, in seconds since the epoch."""
try:
self._date = float(date)
except ValueError:
raise TypeError("can't convert to float: %s" % date)
def get_info(self):
"""Get the message's "info" as a string."""
return self._info
def set_info(self, info):
"""Set the message's "info" string."""
if isinstance(info, str):
self._info = info
else:
raise TypeError('info must be a string: %s' % type(info))
def _explain_to(self, message):
"""Copy Maildir-specific state to message insofar as possible."""
if isinstance(message, MaildirMessage):
message.set_flags(self.get_flags())
message.set_subdir(self.get_subdir())
message.set_date(self.get_date())
elif isinstance(message, _mboxMMDFMessage):
flags = set(self.get_flags())
if 'S' in flags:
message.add_flag('R')
if self.get_subdir() == 'cur':
message.add_flag('O')
if 'T' in flags:
message.add_flag('D')
if 'F' in flags:
message.add_flag('F')
if 'R' in flags:
message.add_flag('A')
message.set_from('MAILER-DAEMON', time.gmtime(self.get_date()))
elif isinstance(message, MHMessage):
flags = set(self.get_flags())
if 'S' not in flags:
message.add_sequence('unseen')
if 'R' in flags:
message.add_sequence('replied')
if 'F' in flags:
message.add_sequence('flagged')
elif isinstance(message, BabylMessage):
flags = set(self.get_flags())
if 'S' not in flags:
message.add_label('unseen')
if 'T' in flags:
message.add_label('deleted')
if 'R' in flags:
message.add_label('answered')
if 'P' in flags:
message.add_label('forwarded')
elif isinstance(message, Message):
pass
else:
raise TypeError('Cannot convert to specified type: %s' %
type(message))
class _mboxMMDFMessage(Message):
"""Message with mbox- or MMDF-specific properties."""
_type_specific_attributes = ['_from']
def __init__(self, message=None):
"""Initialize an mboxMMDFMessage instance."""
self.set_from('MAILER-DAEMON', True)
if isinstance(message, email.message.Message):
unixfrom = message.get_unixfrom()
if unixfrom is not None and unixfrom.startswith('From '):
self.set_from(unixfrom[5:])
Message.__init__(self, message)
def get_from(self):
"""Return contents of "From " line."""
return self._from
def set_from(self, from_, time_=None):
"""Set "From " line, formatting and appending time_ if specified."""
if time_ is not None:
if time_ is True:
time_ = time.gmtime()
from_ += ' ' + time.asctime(time_)
self._from = from_
def get_flags(self):
"""Return as a string the flags that are set."""
return self.get('Status', '') + self.get('X-Status', '')
def set_flags(self, flags):
"""Set the given flags and unset all others."""
flags = set(flags)
status_flags, xstatus_flags = '', ''
for flag in ('R', 'O'):
if flag in flags:
status_flags += flag
flags.remove(flag)
for flag in ('D', 'F', 'A'):
if flag in flags:
xstatus_flags += flag
flags.remove(flag)
xstatus_flags += ''.join(sorted(flags))
try:
self.replace_header('Status', status_flags)
except KeyError:
self.add_header('Status', status_flags)
try:
self.replace_header('X-Status', xstatus_flags)
except KeyError:
self.add_header('X-Status', xstatus_flags)
def add_flag(self, flag):
"""Set the given flag(s) without changing others."""
self.set_flags(''.join(set(self.get_flags()) | set(flag)))
def remove_flag(self, flag):
"""Unset the given string flag(s) without changing others."""
if 'Status' in self or 'X-Status' in self:
self.set_flags(''.join(set(self.get_flags()) - set(flag)))
def _explain_to(self, message):
"""Copy mbox- or MMDF-specific state to message insofar as possible."""
if isinstance(message, MaildirMessage):
flags = set(self.get_flags())
if 'O' in flags:
message.set_subdir('cur')
if 'F' in flags:
message.add_flag('F')
if 'A' in flags:
message.add_flag('R')
if 'R' in flags:
message.add_flag('S')
if 'D' in flags:
message.add_flag('T')
del message['status']
del message['x-status']
maybe_date = ' '.join(self.get_from().split()[-5:])
try:
message.set_date(calendar.timegm(time.strptime(maybe_date,
'%a %b %d %H:%M:%S %Y')))
except (ValueError, OverflowError):
pass
elif isinstance(message, _mboxMMDFMessage):
message.set_flags(self.get_flags())
message.set_from(self.get_from())
elif isinstance(message, MHMessage):
flags = set(self.get_flags())
if 'R' not in flags:
message.add_sequence('unseen')
if 'A' in flags:
message.add_sequence('replied')
if 'F' in flags:
message.add_sequence('flagged')
del message['status']
del message['x-status']
elif isinstance(message, BabylMessage):
flags = set(self.get_flags())
if 'R' not in flags:
message.add_label('unseen')
if 'D' in flags:
message.add_label('deleted')
if 'A' in flags:
message.add_label('answered')
del message['status']
del message['x-status']
elif isinstance(message, Message):
pass
else:
raise TypeError('Cannot convert to specified type: %s' %
type(message))
class mboxMessage(_mboxMMDFMessage):
"""Message with mbox-specific properties."""
class MHMessage(Message):
"""Message with MH-specific properties."""
_type_specific_attributes = ['_sequences']
def __init__(self, message=None):
"""Initialize an MHMessage instance."""
self._sequences = []
Message.__init__(self, message)
def get_sequences(self):
"""Return a list of sequences that include the message."""
return self._sequences[:]
def set_sequences(self, sequences):
"""Set the list of sequences that include the message."""
self._sequences = list(sequences)
def add_sequence(self, sequence):
"""Add sequence to list of sequences including the message."""
if isinstance(sequence, str):
if not sequence in self._sequences:
self._sequences.append(sequence)
else:
raise TypeError('sequence type must be str: %s' % type(sequence))
def remove_sequence(self, sequence):
"""Remove sequence from the list of sequences including the message."""
try:
self._sequences.remove(sequence)
except ValueError:
pass
def _explain_to(self, message):
"""Copy MH-specific state to message insofar as possible."""
if isinstance(message, MaildirMessage):
sequences = set(self.get_sequences())
if 'unseen' in sequences:
message.set_subdir('cur')
else:
message.set_subdir('cur')
message.add_flag('S')
if 'flagged' in sequences:
message.add_flag('F')
if 'replied' in sequences:
message.add_flag('R')
elif isinstance(message, _mboxMMDFMessage):
sequences = set(self.get_sequences())
if 'unseen' not in sequences:
message.add_flag('RO')
else:
message.add_flag('O')
if 'flagged' in sequences:
message.add_flag('F')
if 'replied' in sequences:
message.add_flag('A')
elif isinstance(message, MHMessage):
for sequence in self.get_sequences():
message.add_sequence(sequence)
elif isinstance(message, BabylMessage):
sequences = set(self.get_sequences())
if 'unseen' in sequences:
message.add_label('unseen')
if 'replied' in sequences:
message.add_label('answered')
elif isinstance(message, Message):
pass
else:
raise TypeError('Cannot convert to specified type: %s' %
type(message))
class BabylMessage(Message):
"""Message with Babyl-specific properties."""
_type_specific_attributes = ['_labels', '_visible']
def __init__(self, message=None):
"""Initialize a BabylMessage instance."""
self._labels = []
self._visible = Message()
Message.__init__(self, message)
def get_labels(self):
"""Return a list of labels on the message."""
return self._labels[:]
def set_labels(self, labels):
"""Set the list of labels on the message."""
self._labels = list(labels)
def add_label(self, label):
"""Add label to list of labels on the message."""
if isinstance(label, str):
if label not in self._labels:
self._labels.append(label)
else:
raise TypeError('label must be a string: %s' % type(label))
def remove_label(self, label):
"""Remove label from the list of labels on the message."""
try:
self._labels.remove(label)
except ValueError:
pass
def get_visible(self):
"""Return a Message representation of visible headers."""
return Message(self._visible)
def set_visible(self, visible):
"""Set the Message representation of visible headers."""
self._visible = Message(visible)
def update_visible(self):
"""Update and/or sensibly generate a set of visible headers."""
for header in self._visible.keys():
if header in self:
self._visible.replace_header(header, self[header])
else:
del self._visible[header]
for header in ('Date', 'From', 'Reply-To', 'To', 'CC', 'Subject'):
if header in self and header not in self._visible:
self._visible[header] = self[header]
def _explain_to(self, message):
"""Copy Babyl-specific state to message insofar as possible."""
if isinstance(message, MaildirMessage):
labels = set(self.get_labels())
if 'unseen' in labels:
message.set_subdir('cur')
else:
message.set_subdir('cur')
message.add_flag('S')
if 'forwarded' in labels or 'resent' in labels:
message.add_flag('P')
if 'answered' in labels:
message.add_flag('R')
if 'deleted' in labels:
message.add_flag('T')
elif isinstance(message, _mboxMMDFMessage):
labels = set(self.get_labels())
if 'unseen' not in labels:
message.add_flag('RO')
else:
message.add_flag('O')
if 'deleted' in labels:
message.add_flag('D')
if 'answered' in labels:
message.add_flag('A')
elif isinstance(message, MHMessage):
labels = set(self.get_labels())
if 'unseen' in labels:
message.add_sequence('unseen')
if 'answered' in labels:
message.add_sequence('replied')
elif isinstance(message, BabylMessage):
message.set_visible(self.get_visible())
for label in self.get_labels():
message.add_label(label)
elif isinstance(message, Message):
pass
else:
raise TypeError('Cannot convert to specified type: %s' %
type(message))
class MMDFMessage(_mboxMMDFMessage):
"""Message with MMDF-specific properties."""
class _ProxyFile:
"""A read-only wrapper of a file."""
def __init__(self, f, pos=None):
"""Initialize a _ProxyFile."""
self._file = f
if pos is None:
self._pos = f.tell()
else:
self._pos = pos
def read(self, size=None):
"""Read bytes."""
return self._read(size, self._file.read)
def read1(self, size=None):
"""Read bytes."""
return self._read(size, self._file.read1)
def readline(self, size=None):
"""Read a line."""
return self._read(size, self._file.readline)
def readlines(self, sizehint=None):
"""Read multiple lines."""
result = []
for line in self:
result.append(line)
if sizehint is not None:
sizehint -= len(line)
if sizehint <= 0:
break
return result
def __iter__(self):
"""Iterate over lines."""
while True:
line = self.readline()
if not line:
return
yield line
def tell(self):
"""Return the position."""
return self._pos
def seek(self, offset, whence=0):
"""Change position."""
if whence == 1:
self._file.seek(self._pos)
self._file.seek(offset, whence)
self._pos = self._file.tell()
def close(self):
"""Close the file."""
if hasattr(self, '_file'):
try:
if hasattr(self._file, 'close'):
self._file.close()
finally:
del self._file
def _read(self, size, read_method):
"""Read size bytes using read_method."""
if size is None:
size = -1
self._file.seek(self._pos)
result = read_method(size)
self._pos = self._file.tell()
return result
def __enter__(self):
"""Context management protocol support."""
return self
def __exit__(self, *exc):
self.close()
def readable(self):
return self._file.readable()
def writable(self):
return self._file.writable()
def seekable(self):
return self._file.seekable()
def flush(self):
return self._file.flush()
@property
def closed(self):
if not hasattr(self, '_file'):
return True
if not hasattr(self._file, 'closed'):
return False
return self._file.closed
class _PartialFile(_ProxyFile):
"""A read-only wrapper of part of a file."""
def __init__(self, f, start=None, stop=None):
"""Initialize a _PartialFile."""
_ProxyFile.__init__(self, f, start)
self._start = start
self._stop = stop
def tell(self):
"""Return the position with respect to start."""
return _ProxyFile.tell(self) - self._start
def seek(self, offset, whence=0):
"""Change position, possibly with respect to start or stop."""
if whence == 0:
self._pos = self._start
whence = 1
elif whence == 2:
self._pos = self._stop
whence = 1
_ProxyFile.seek(self, offset, whence)
def _read(self, size, read_method):
"""Read size bytes using read_method, honoring start and stop."""
remaining = self._stop - self._pos
if remaining <= 0:
return b''
if size is None or size < 0 or size > remaining:
size = remaining
return _ProxyFile._read(self, size, read_method)
def close(self):
# do *not* close the underlying file object for partial files,
# since it's global to the mailbox object
if hasattr(self, '_file'):
del self._file
def _lock_file(f, dotlock=True):
"""Lock file f using lockf and dot locking."""
dotlock_done = False
try:
if fcntl:
try:
fcntl.lockf(f, fcntl.LOCK_EX | fcntl.LOCK_NB)
except OSError as e:
if e.errno in (errno.EAGAIN, errno.EACCES, errno.EROFS):
raise ExternalClashError('lockf: lock unavailable: %s' %
f.name)
else:
raise
if dotlock:
try:
pre_lock = _create_temporary(f.name + '.lock')
pre_lock.close()
except OSError as e:
if e.errno in (errno.EACCES, errno.EROFS):
return # Without write access, just skip dotlocking.
else:
raise
try:
try:
os.link(pre_lock.name, f.name + '.lock')
dotlock_done = True
except (AttributeError, PermissionError):
os.rename(pre_lock.name, f.name + '.lock')
dotlock_done = True
else:
os.unlink(pre_lock.name)
except FileExistsError:
os.remove(pre_lock.name)
raise ExternalClashError('dot lock unavailable: %s' %
f.name)
except:
if fcntl:
fcntl.lockf(f, fcntl.LOCK_UN)
if dotlock_done:
os.remove(f.name + '.lock')
raise
def _unlock_file(f):
"""Unlock file f using lockf and dot locking."""
if fcntl:
fcntl.lockf(f, fcntl.LOCK_UN)
if os.path.exists(f.name + '.lock'):
os.remove(f.name + '.lock')
def _create_carefully(path):
"""Create a file if it doesn't exist and open for reading and writing."""
fd = os.open(path, os.O_CREAT | os.O_EXCL | os.O_RDWR, 0o666)
try:
return open(path, 'rb+')
finally:
os.close(fd)
def _create_temporary(path):
"""Create a temp file based on path and open for reading and writing."""
return _create_carefully('%s.%s.%s.%s' % (path, int(time.time()),
socket.gethostname(),
os.getpid()))
def _sync_flush(f):
"""Ensure changes to file f are physically on disk."""
f.flush()
# TODO(jart): Why does this need fsync() lool?
#if hasattr(os, 'fsync'):
# os.fsync(f.fileno())
def _sync_close(f):
"""Close file f, ensuring all changes are physically on disk."""
_sync_flush(f)
f.close()
class Error(Exception):
"""Raised for module-specific errors."""
class NoSuchMailboxError(Error):
"""The specified mailbox does not exist and won't be created."""
class NotEmptyError(Error):
"""The specified mailbox is not empty and deletion was requested."""
class ExternalClashError(Error):
"""Another process caused an action to fail."""
class FormatError(Error):
"""A file appears to have an invalid format."""
| 78,677 | 2,148 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/base64.py | #! /usr/bin/env python3
"""Base16, Base32, Base64 (RFC 3548), Base85 and Ascii85 data encodings"""
# Modified 04-Oct-1995 by Jack Jansen to use binascii module
# Modified 30-Dec-2003 by Barry Warsaw to add full RFC 3548 support
# Modified 22-May-2007 by Guido van Rossum to use bytes everywhere
import re
import struct
import binascii
__all__ = [
# Legacy interface exports traditional RFC 2045 Base64 encodings
'encode', 'decode', 'encodebytes', 'decodebytes',
# Generalized interface for other encodings
'b64encode', 'b64decode', 'b32encode', 'b32decode',
'b16encode', 'b16decode',
# Base85 and Ascii85 encodings
'b85encode', 'b85decode', 'a85encode', 'a85decode',
# Standard Base64 encoding
'standard_b64encode', 'standard_b64decode',
# Some common Base64 alternatives. As referenced by RFC 3458, see thread
# starting at:
#
# http://zgp.org/pipermail/p2p-hackers/2001-September/000316.html
'urlsafe_b64encode', 'urlsafe_b64decode',
]
bytes_types = (bytes, bytearray) # Types acceptable as binary data
def _bytes_from_decode_data(s):
if isinstance(s, str):
try:
return s.encode('ascii')
except UnicodeEncodeError:
raise ValueError('string argument should contain only ASCII characters')
if isinstance(s, bytes_types):
return s
try:
return memoryview(s).tobytes()
except TypeError:
raise TypeError("argument should be a bytes-like object or ASCII "
"string, not %r" % s.__class__.__name__) from None
# Base64 encoding/decoding uses binascii
def b64encode(s, altchars=None):
"""Encode the bytes-like object s using Base64 and return a bytes object.
Optional altchars should be a byte string of length 2 which specifies an
alternative alphabet for the '+' and '/' characters. This allows an
application to e.g. generate url or filesystem safe Base64 strings.
"""
encoded = binascii.b2a_base64(s, newline=False)
if altchars is not None:
assert len(altchars) == 2, repr(altchars)
return encoded.translate(bytes.maketrans(b'+/', altchars))
return encoded
def b64decode(s, altchars=None, validate=False):
"""Decode the Base64 encoded bytes-like object or ASCII string s.
Optional altchars must be a bytes-like object or ASCII string of length 2
which specifies the alternative alphabet used instead of the '+' and '/'
characters.
The result is returned as a bytes object. A binascii.Error is raised if
s is incorrectly padded.
If validate is False (the default), characters that are neither in the
normal base-64 alphabet nor the alternative alphabet are discarded prior
to the padding check. If validate is True, these non-alphabet characters
in the input result in a binascii.Error.
"""
s = _bytes_from_decode_data(s)
if altchars is not None:
altchars = _bytes_from_decode_data(altchars)
assert len(altchars) == 2, repr(altchars)
s = s.translate(bytes.maketrans(altchars, b'+/'))
if validate and not re.match(b'^[A-Za-z0-9+/]*={0,2}$', s):
raise binascii.Error('Non-base64 digit found')
return binascii.a2b_base64(s)
def standard_b64encode(s):
"""Encode bytes-like object s using the standard Base64 alphabet.
The result is returned as a bytes object.
"""
return b64encode(s)
def standard_b64decode(s):
"""Decode bytes encoded with the standard Base64 alphabet.
Argument s is a bytes-like object or ASCII string to decode. The result
is returned as a bytes object. A binascii.Error is raised if the input
is incorrectly padded. Characters that are not in the standard alphabet
are discarded prior to the padding check.
"""
return b64decode(s)
_urlsafe_encode_translation = bytes.maketrans(b'+/', b'-_')
_urlsafe_decode_translation = bytes.maketrans(b'-_', b'+/')
def urlsafe_b64encode(s):
"""Encode bytes using the URL- and filesystem-safe Base64 alphabet.
Argument s is a bytes-like object to encode. The result is returned as a
bytes object. The alphabet uses '-' instead of '+' and '_' instead of
'/'.
"""
return b64encode(s).translate(_urlsafe_encode_translation)
def urlsafe_b64decode(s):
"""Decode bytes using the URL- and filesystem-safe Base64 alphabet.
Argument s is a bytes-like object or ASCII string to decode. The result
is returned as a bytes object. A binascii.Error is raised if the input
is incorrectly padded. Characters that are not in the URL-safe base-64
alphabet, and are not a plus '+' or slash '/', are discarded prior to the
padding check.
The alphabet uses '-' instead of '+' and '_' instead of '/'.
"""
s = _bytes_from_decode_data(s)
s = s.translate(_urlsafe_decode_translation)
return b64decode(s)
# Base32 encoding/decoding must be done in Python
_b32alphabet = b'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567'
_b32tab2 = None
_b32rev = None
def b32encode(s):
"""Encode the bytes-like object s using Base32 and return a bytes object.
"""
global _b32tab2
# Delay the initialization of the table to not waste memory
# if the function is never called
if _b32tab2 is None:
b32tab = [bytes((i,)) for i in _b32alphabet]
_b32tab2 = [a + b for a in b32tab for b in b32tab]
b32tab = None
if not isinstance(s, bytes_types):
s = memoryview(s).tobytes()
leftover = len(s) % 5
# Pad the last quantum with zero bits if necessary
if leftover:
s = s + b'\0' * (5 - leftover) # Don't use += !
encoded = bytearray()
from_bytes = int.from_bytes
b32tab2 = _b32tab2
for i in range(0, len(s), 5):
c = from_bytes(s[i: i + 5], 'big')
encoded += (b32tab2[c >> 30] + # bits 1 - 10
b32tab2[(c >> 20) & 0x3ff] + # bits 11 - 20
b32tab2[(c >> 10) & 0x3ff] + # bits 21 - 30
b32tab2[c & 0x3ff] # bits 31 - 40
)
# Adjust for any leftover partial quanta
if leftover == 1:
encoded[-6:] = b'======'
elif leftover == 2:
encoded[-4:] = b'===='
elif leftover == 3:
encoded[-3:] = b'==='
elif leftover == 4:
encoded[-1:] = b'='
return bytes(encoded)
def b32decode(s, casefold=False, map01=None):
"""Decode the Base32 encoded bytes-like object or ASCII string s.
Optional casefold is a flag specifying whether a lowercase alphabet is
acceptable as input. For security purposes, the default is False.
RFC 3548 allows for optional mapping of the digit 0 (zero) to the
letter O (oh), and for optional mapping of the digit 1 (one) to
either the letter I (eye) or letter L (el). The optional argument
map01 when not None, specifies which letter the digit 1 should be
mapped to (when map01 is not None, the digit 0 is always mapped to
the letter O). For security purposes the default is None, so that
0 and 1 are not allowed in the input.
The result is returned as a bytes object. A binascii.Error is raised if
the input is incorrectly padded or if there are non-alphabet
characters present in the input.
"""
global _b32rev
# Delay the initialization of the table to not waste memory
# if the function is never called
if _b32rev is None:
_b32rev = {v: k for k, v in enumerate(_b32alphabet)}
s = _bytes_from_decode_data(s)
if len(s) % 8:
raise binascii.Error('Incorrect padding')
# Handle section 2.4 zero and one mapping. The flag map01 will be either
# False, or the character to map the digit 1 (one) to. It should be
# either L (el) or I (eye).
if map01 is not None:
map01 = _bytes_from_decode_data(map01)
assert len(map01) == 1, repr(map01)
s = s.translate(bytes.maketrans(b'01', b'O' + map01))
if casefold:
s = s.upper()
# Strip off pad characters from the right. We need to count the pad
# characters because this will tell us how many null bytes to remove from
# the end of the decoded string.
l = len(s)
s = s.rstrip(b'=')
padchars = l - len(s)
# Now decode the full quanta
decoded = bytearray()
b32rev = _b32rev
for i in range(0, len(s), 8):
quanta = s[i: i + 8]
acc = 0
try:
for c in quanta:
acc = (acc << 5) + b32rev[c]
except KeyError:
raise binascii.Error('Non-base32 digit found') from None
decoded += acc.to_bytes(5, 'big')
# Process the last, partial quanta
if l % 8 or padchars not in {0, 1, 3, 4, 6}:
raise binascii.Error('Incorrect padding')
if padchars and decoded:
acc <<= 5 * padchars
last = acc.to_bytes(5, 'big')
leftover = (43 - 5 * padchars) // 8 # 1: 4, 3: 3, 4: 2, 6: 1
decoded[-5:] = last[:leftover]
return bytes(decoded)
# RFC 3548, Base 16 Alphabet specifies uppercase, but hexlify() returns
# lowercase. The RFC also recommends against accepting input case
# insensitively.
def b16encode(s):
"""Encode the bytes-like object s using Base16 and return a bytes object.
"""
return binascii.hexlify(s).upper()
def b16decode(s, casefold=False):
"""Decode the Base16 encoded bytes-like object or ASCII string s.
Optional casefold is a flag specifying whether a lowercase alphabet is
acceptable as input. For security purposes, the default is False.
The result is returned as a bytes object. A binascii.Error is raised if
s is incorrectly padded or if there are non-alphabet characters present
in the input.
"""
s = _bytes_from_decode_data(s)
if casefold:
s = s.upper()
if re.search(b'[^0-9A-F]', s):
raise binascii.Error('Non-base16 digit found')
return binascii.unhexlify(s)
#
# Ascii85 encoding/decoding
#
_a85chars = None
_a85chars2 = None
_A85START = b"<~"
_A85END = b"~>"
def _85encode(b, chars, chars2, pad=False, foldnuls=False, foldspaces=False):
# Helper function for a85encode and b85encode
if not isinstance(b, bytes_types):
b = memoryview(b).tobytes()
padding = (-len(b)) % 4
if padding:
b = b + b'\0' * padding
words = struct.Struct('!%dI' % (len(b) // 4)).unpack(b)
chunks = [b'z' if foldnuls and not word else
b'y' if foldspaces and word == 0x20202020 else
(chars2[word // 614125] +
chars2[word // 85 % 7225] +
chars[word % 85])
for word in words]
if padding and not pad:
if chunks[-1] == b'z':
chunks[-1] = chars[0] * 5
chunks[-1] = chunks[-1][:-padding]
return b''.join(chunks)
def a85encode(b, *, foldspaces=False, wrapcol=0, pad=False, adobe=False):
"""Encode bytes-like object b using Ascii85 and return a bytes object.
foldspaces is an optional flag that uses the special short sequence 'y'
instead of 4 consecutive spaces (ASCII 0x20) as supported by 'btoa'. This
feature is not supported by the "standard" Adobe encoding.
wrapcol controls whether the output should have newline (b'\\n') characters
added to it. If this is non-zero, each output line will be at most this
many characters long.
pad controls whether the input is padded to a multiple of 4 before
encoding. Note that the btoa implementation always pads.
adobe controls whether the encoded byte sequence is framed with <~ and ~>,
which is used by the Adobe implementation.
"""
global _a85chars, _a85chars2
# Delay the initialization of tables to not waste memory
# if the function is never called
if _a85chars is None:
_a85chars = [bytes((i,)) for i in range(33, 118)]
_a85chars2 = [(a + b) for a in _a85chars for b in _a85chars]
result = _85encode(b, _a85chars, _a85chars2, pad, True, foldspaces)
if adobe:
result = _A85START + result
if wrapcol:
wrapcol = max(2 if adobe else 1, wrapcol)
chunks = [result[i: i + wrapcol]
for i in range(0, len(result), wrapcol)]
if adobe:
if len(chunks[-1]) + 2 > wrapcol:
chunks.append(b'')
result = b'\n'.join(chunks)
if adobe:
result += _A85END
return result
def a85decode(b, *, foldspaces=False, adobe=False, ignorechars=b' \t\n\r\v'):
"""Decode the Ascii85 encoded bytes-like object or ASCII string b.
foldspaces is a flag that specifies whether the 'y' short sequence should be
accepted as shorthand for 4 consecutive spaces (ASCII 0x20). This feature is
not supported by the "standard" Adobe encoding.
adobe controls whether the input sequence is in Adobe Ascii85 format (i.e.
is framed with <~ and ~>).
ignorechars should be a byte string containing characters to ignore from the
input. This should only contain whitespace characters, and by default
contains all whitespace characters in ASCII.
The result is returned as a bytes object.
"""
b = _bytes_from_decode_data(b)
if adobe:
if not b.endswith(_A85END):
raise ValueError(
"Ascii85 encoded byte sequences must end "
"with {!r}".format(_A85END)
)
if b.startswith(_A85START):
b = b[2:-2] # Strip off start/end markers
else:
b = b[:-2]
#
# We have to go through this stepwise, so as to ignore spaces and handle
# special short sequences
#
packI = struct.Struct('!I').pack
decoded = []
decoded_append = decoded.append
curr = []
curr_append = curr.append
curr_clear = curr.clear
for x in b + b'u' * 4:
if b'!'[0] <= x <= b'u'[0]:
curr_append(x)
if len(curr) == 5:
acc = 0
for x in curr:
acc = 85 * acc + (x - 33)
try:
decoded_append(packI(acc))
except struct.error:
raise ValueError('Ascii85 overflow') from None
curr_clear()
elif x == b'z'[0]:
if curr:
raise ValueError('z inside Ascii85 5-tuple')
decoded_append(b'\0\0\0\0')
elif foldspaces and x == b'y'[0]:
if curr:
raise ValueError('y inside Ascii85 5-tuple')
decoded_append(b'\x20\x20\x20\x20')
elif x in ignorechars:
# Skip whitespace
continue
else:
raise ValueError('Non-Ascii85 digit found: %c' % x)
result = b''.join(decoded)
padding = 4 - len(curr)
if padding:
# Throw away the extra padding
result = result[:-padding]
return result
# The following code is originally taken (with permission) from Mercurial
_b85alphabet = (b"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
b"abcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~")
_b85chars = None
_b85chars2 = None
_b85dec = None
def b85encode(b, pad=False):
"""Encode bytes-like object b in base85 format and return a bytes object.
If pad is true, the input is padded with b'\\0' so its length is a multiple of
4 bytes before encoding.
"""
global _b85chars, _b85chars2
# Delay the initialization of tables to not waste memory
# if the function is never called
if _b85chars is None:
_b85chars = [bytes((i,)) for i in _b85alphabet]
_b85chars2 = [(a + b) for a in _b85chars for b in _b85chars]
return _85encode(b, _b85chars, _b85chars2, pad)
def b85decode(b):
"""Decode the base85-encoded bytes-like object or ASCII string b
The result is returned as a bytes object.
"""
global _b85dec
# Delay the initialization of tables to not waste memory
# if the function is never called
if _b85dec is None:
_b85dec = [None] * 256
for i, c in enumerate(_b85alphabet):
_b85dec[c] = i
b = _bytes_from_decode_data(b)
padding = (-len(b)) % 5
b = b + b'~' * padding
out = []
packI = struct.Struct('!I').pack
for i in range(0, len(b), 5):
chunk = b[i:i + 5]
acc = 0
try:
for c in chunk:
acc = acc * 85 + _b85dec[c]
except TypeError:
for j, c in enumerate(chunk):
if _b85dec[c] is None:
raise ValueError('bad base85 character at position %d'
% (i + j)) from None
raise
try:
out.append(packI(acc))
except struct.error:
raise ValueError('base85 overflow in hunk starting at byte %d'
% i) from None
result = b''.join(out)
if padding:
result = result[:-padding]
return result
# Legacy interface. This code could be cleaned up since I don't believe
# binascii has any line length limitations. It just doesn't seem worth it
# though. The files should be opened in binary mode.
MAXLINESIZE = 76 # Excluding the CRLF
MAXBINSIZE = (MAXLINESIZE//4)*3
def encode(input, output):
"""Encode a file; input and output are binary files."""
while True:
s = input.read(MAXBINSIZE)
if not s:
break
while len(s) < MAXBINSIZE:
ns = input.read(MAXBINSIZE-len(s))
if not ns:
break
s += ns
line = binascii.b2a_base64(s)
output.write(line)
def decode(input, output):
"""Decode a file; input and output are binary files."""
while True:
line = input.readline()
if not line:
break
s = binascii.a2b_base64(line)
output.write(s)
def _input_type_check(s):
try:
m = memoryview(s)
except TypeError as err:
msg = "expected bytes-like object, not %s" % s.__class__.__name__
raise TypeError(msg) from err
if m.format not in ('c', 'b', 'B'):
msg = ("expected single byte elements, not %r from %s" %
(m.format, s.__class__.__name__))
raise TypeError(msg)
if m.ndim != 1:
msg = ("expected 1-D data, not %d-D data from %s" %
(m.ndim, s.__class__.__name__))
raise TypeError(msg)
def encodebytes(s):
"""Encode a bytestring into a bytes object containing multiple lines
of base-64 data."""
_input_type_check(s)
pieces = []
for i in range(0, len(s), MAXBINSIZE):
chunk = s[i : i + MAXBINSIZE]
pieces.append(binascii.b2a_base64(chunk))
return b"".join(pieces)
def encodestring(s):
"""Legacy alias of encodebytes()."""
import warnings
warnings.warn("encodestring() is a deprecated alias since 3.1, "
"use encodebytes()",
DeprecationWarning, 2)
return encodebytes(s)
def decodebytes(s):
"""Decode a bytestring of base-64 data into a bytes object."""
_input_type_check(s)
return binascii.a2b_base64(s)
def decodestring(s):
"""Legacy alias of decodebytes()."""
import warnings
warnings.warn("decodestring() is a deprecated alias since Python 3.1, "
"use decodebytes()",
DeprecationWarning, 2)
return decodebytes(s)
# Usable as a script...
def main():
"""Small main program"""
import sys, getopt
try:
opts, args = getopt.getopt(sys.argv[1:], 'deut')
except getopt.error as msg:
sys.stdout = sys.stderr
print(msg)
print("""usage: %s [-d|-e|-u|-t] [file|-]
-d, -u: decode
-e: encode (default)
-t: encode and decode string 'Aladdin:open sesame'"""%sys.argv[0])
sys.exit(2)
func = encode
for o, a in opts:
if o == '-e': func = encode
if o == '-d': func = decode
if o == '-u': func = decode
if o == '-t': test(); return
if args and args[0] != '-':
with open(args[0], 'rb') as f:
func(f, sys.stdout.buffer)
else:
func(sys.stdin.buffer, sys.stdout.buffer)
def test():
s0 = b"Aladdin:open sesame"
print(repr(s0))
s1 = encodebytes(s0)
print(repr(s1))
s2 = decodebytes(s1)
print(repr(s2))
assert s0 == s2
if __name__ == '__main__':
main()
| 20,380 | 596 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/macurl2path.py | """Macintosh-specific module for conversion between pathnames and URLs.
Do not import directly; use urllib instead."""
import urllib.parse
import os
__all__ = ["url2pathname","pathname2url"]
def url2pathname(pathname):
"""OS-specific conversion from a relative URL of the 'file' scheme
to a file system path; not recommended for general use."""
#
# XXXX The .. handling should be fixed...
#
tp = urllib.parse.splittype(pathname)[0]
if tp and tp != 'file':
raise RuntimeError('Cannot convert non-local URL to pathname')
# Turn starting /// into /, an empty hostname means current host
if pathname[:3] == '///':
pathname = pathname[2:]
elif pathname[:2] == '//':
raise RuntimeError('Cannot convert non-local URL to pathname')
components = pathname.split('/')
# Remove . and embedded ..
i = 0
while i < len(components):
if components[i] == '.':
del components[i]
elif components[i] == '..' and i > 0 and \
components[i-1] not in ('', '..'):
del components[i-1:i+1]
i = i-1
elif components[i] == '' and i > 0 and components[i-1] != '':
del components[i]
else:
i = i+1
if not components[0]:
# Absolute unix path, don't start with colon
rv = ':'.join(components[1:])
else:
# relative unix path, start with colon. First replace
# leading .. by empty strings (giving ::file)
i = 0
while i < len(components) and components[i] == '..':
components[i] = ''
i = i + 1
rv = ':' + ':'.join(components)
# and finally unquote slashes and other funny characters
return urllib.parse.unquote(rv)
def pathname2url(pathname):
"""OS-specific conversion from a file system path to a relative URL
of the 'file' scheme; not recommended for general use."""
if '/' in pathname:
raise RuntimeError("Cannot convert pathname containing slashes")
components = pathname.split(':')
# Remove empty first and/or last component
if components[0] == '':
del components[0]
if components[-1] == '':
del components[-1]
# Replace empty string ('::') by .. (will result in '/../' later)
for i in range(len(components)):
if components[i] == '':
components[i] = '..'
# Truncate names longer than 31 bytes
components = map(_pncomp2url, components)
if os.path.isabs(pathname):
return '/' + '/'.join(components)
else:
return '/'.join(components)
def _pncomp2url(component):
# We want to quote slashes
return urllib.parse.quote(component[:31], safe='')
| 2,732 | 78 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/chunk.py | """Simple class to read IFF chunks.
An IFF chunk (used in formats such as AIFF, TIFF, RMFF (RealMedia File
Format)) has the following structure:
+----------------+
| ID (4 bytes) |
+----------------+
| size (4 bytes) |
+----------------+
| data |
| ... |
+----------------+
The ID is a 4-byte string which identifies the type of chunk.
The size field (a 32-bit value, encoded using big-endian byte order)
gives the size of the whole chunk, including the 8-byte header.
Usually an IFF-type file consists of one or more chunks. The proposed
usage of the Chunk class defined here is to instantiate an instance at
the start of each chunk and read from the instance until it reaches
the end, after which a new instance can be instantiated. At the end
of the file, creating a new instance will fail with an EOFError
exception.
Usage:
while True:
try:
chunk = Chunk(file)
except EOFError:
break
chunktype = chunk.getname()
while True:
data = chunk.read(nbytes)
if not data:
pass
# do something with data
The interface is file-like. The implemented methods are:
read, close, seek, tell, isatty.
Extra methods are: skip() (called by close, skips to the end of the chunk),
getname() (returns the name (ID) of the chunk)
The __init__ method has one required argument, a file-like object
(including a chunk instance), and one optional argument, a flag which
specifies whether or not chunks are aligned on 2-byte boundaries. The
default is 1, i.e. aligned.
"""
class Chunk:
def __init__(self, file, align=True, bigendian=True, inclheader=False):
import struct
self.closed = False
self.align = align # whether to align to word (2-byte) boundaries
if bigendian:
strflag = '>'
else:
strflag = '<'
self.file = file
self.chunkname = file.read(4)
if len(self.chunkname) < 4:
raise EOFError
try:
self.chunksize = struct.unpack_from(strflag+'L', file.read(4))[0]
except struct.error:
raise EOFError
if inclheader:
self.chunksize = self.chunksize - 8 # subtract header
self.size_read = 0
try:
self.offset = self.file.tell()
except (AttributeError, OSError):
self.seekable = False
else:
self.seekable = True
def getname(self):
"""Return the name (ID) of the current chunk."""
return self.chunkname
def getsize(self):
"""Return the size of the current chunk."""
return self.chunksize
def close(self):
if not self.closed:
try:
self.skip()
finally:
self.closed = True
def isatty(self):
if self.closed:
raise ValueError("I/O operation on closed file")
return False
def seek(self, pos, whence=0):
"""Seek to specified position into the chunk.
Default position is 0 (start of chunk).
If the file is not seekable, this will result in an error.
"""
if self.closed:
raise ValueError("I/O operation on closed file")
if not self.seekable:
raise OSError("cannot seek")
if whence == 1:
pos = pos + self.size_read
elif whence == 2:
pos = pos + self.chunksize
if pos < 0 or pos > self.chunksize:
raise RuntimeError
self.file.seek(self.offset + pos, 0)
self.size_read = pos
def tell(self):
if self.closed:
raise ValueError("I/O operation on closed file")
return self.size_read
def read(self, size=-1):
"""Read at most size bytes from the chunk.
If size is omitted or negative, read until the end
of the chunk.
"""
if self.closed:
raise ValueError("I/O operation on closed file")
if self.size_read >= self.chunksize:
return b''
if size < 0:
size = self.chunksize - self.size_read
if size > self.chunksize - self.size_read:
size = self.chunksize - self.size_read
data = self.file.read(size)
self.size_read = self.size_read + len(data)
if self.size_read == self.chunksize and \
self.align and \
(self.chunksize & 1):
dummy = self.file.read(1)
self.size_read = self.size_read + len(dummy)
return data
def skip(self):
"""Skip the rest of the chunk.
If you are not interested in the contents of the chunk,
this method should be called so that the file points to
the start of the next chunk.
"""
if self.closed:
raise ValueError("I/O operation on closed file")
if self.seekable:
try:
n = self.chunksize - self.size_read
# maybe fix alignment
if self.align and (self.chunksize & 1):
n = n + 1
self.file.seek(n, 1)
self.size_read = self.size_read + n
return
except OSError:
pass
while self.size_read < self.chunksize:
n = min(8192, self.chunksize - self.size_read)
dummy = self.read(n)
if not dummy:
raise EOFError
| 5,425 | 170 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/webbrowser.py | #! /usr/bin/env python3
"""Interfaces for launching and remotely controlling Web browsers."""
# Maintained by Georg Brandl.
import os
import shlex
import shutil
import sys
import subprocess
__all__ = ["Error", "open", "open_new", "open_new_tab", "get", "register"]
class Error(Exception):
pass
_browsers = {} # Dictionary of available browser controllers
_tryorder = [] # Preference order of available browsers
def register(name, klass, instance=None, update_tryorder=1):
"""Register a browser connector and, optionally, connection."""
_browsers[name.lower()] = [klass, instance]
if update_tryorder > 0:
_tryorder.append(name)
elif update_tryorder < 0:
_tryorder.insert(0, name)
def get(using=None):
"""Return a browser launcher instance appropriate for the environment."""
if using is not None:
alternatives = [using]
else:
alternatives = _tryorder
for browser in alternatives:
if '%s' in browser:
# User gave us a command line, split it into name and args
browser = shlex.split(browser)
if browser[-1] == '&':
return BackgroundBrowser(browser[:-1])
else:
return GenericBrowser(browser)
else:
# User gave us a browser name or path.
try:
command = _browsers[browser.lower()]
except KeyError:
command = _synthesize(browser)
if command[1] is not None:
return command[1]
elif command[0] is not None:
return command[0]()
raise Error("could not locate runnable browser")
# Please note: the following definition hides a builtin function.
# It is recommended one does "import webbrowser" and uses webbrowser.open(url)
# instead of "from webbrowser import *".
def open(url, new=0, autoraise=True):
for name in _tryorder:
browser = get(name)
if browser.open(url, new, autoraise):
return True
return False
def open_new(url):
return open(url, 1)
def open_new_tab(url):
return open(url, 2)
def _synthesize(browser, update_tryorder=1):
"""Attempt to synthesize a controller base on existing controllers.
This is useful to create a controller when a user specifies a path to
an entry in the BROWSER environment variable -- we can copy a general
controller to operate using a specific installation of the desired
browser in this way.
If we can't create a controller in this way, or if there is no
executable for the requested browser, return [None, None].
"""
cmd = browser.split()[0]
if not shutil.which(cmd):
return [None, None]
name = os.path.basename(cmd)
try:
command = _browsers[name.lower()]
except KeyError:
return [None, None]
# now attempt to clone to fit the new name:
controller = command[1]
if controller and name.lower() == controller.basename:
import copy
controller = copy.copy(controller)
controller.name = browser
controller.basename = os.path.basename(browser)
register(browser, None, controller, update_tryorder)
return [None, controller]
return [None, None]
# General parent classes
class BaseBrowser(object):
"""Parent class for all browsers. Do not use directly."""
args = ['%s']
def __init__(self, name=""):
self.name = name
self.basename = name
def open(self, url, new=0, autoraise=True):
raise NotImplementedError
def open_new(self, url):
return self.open(url, 1)
def open_new_tab(self, url):
return self.open(url, 2)
class GenericBrowser(BaseBrowser):
"""Class for all browsers started with a command
and without remote functionality."""
def __init__(self, name):
if isinstance(name, str):
self.name = name
self.args = ["%s"]
else:
# name should be a list with arguments
self.name = name[0]
self.args = name[1:]
self.basename = os.path.basename(self.name)
def open(self, url, new=0, autoraise=True):
cmdline = [self.name] + [arg.replace("%s", url)
for arg in self.args]
try:
if sys.platform[:3] == 'win':
p = subprocess.Popen(cmdline)
else:
p = subprocess.Popen(cmdline, close_fds=True)
return not p.wait()
except OSError:
return False
class BackgroundBrowser(GenericBrowser):
"""Class for all browsers which are to be started in the
background."""
def open(self, url, new=0, autoraise=True):
cmdline = [self.name] + [arg.replace("%s", url)
for arg in self.args]
try:
if sys.platform[:3] == 'win':
p = subprocess.Popen(cmdline)
else:
p = subprocess.Popen(cmdline, close_fds=True,
start_new_session=True)
return (p.poll() is None)
except OSError:
return False
class UnixBrowser(BaseBrowser):
"""Parent class for all Unix browsers with remote functionality."""
raise_opts = None
background = False
redirect_stdout = True
# In remote_args, %s will be replaced with the requested URL. %action will
# be replaced depending on the value of 'new' passed to open.
# remote_action is used for new=0 (open). If newwin is not None, it is
# used for new=1 (open_new). If newtab is not None, it is used for
# new=3 (open_new_tab). After both substitutions are made, any empty
# strings in the transformed remote_args list will be removed.
remote_args = ['%action', '%s']
remote_action = None
remote_action_newwin = None
remote_action_newtab = None
def _invoke(self, args, remote, autoraise):
raise_opt = []
if remote and self.raise_opts:
# use autoraise argument only for remote invocation
autoraise = int(autoraise)
opt = self.raise_opts[autoraise]
if opt: raise_opt = [opt]
cmdline = [self.name] + raise_opt + args
if remote or self.background:
inout = subprocess.DEVNULL
else:
# for TTY browsers, we need stdin/out
inout = None
p = subprocess.Popen(cmdline, close_fds=True, stdin=inout,
stdout=(self.redirect_stdout and inout or None),
stderr=inout, start_new_session=True)
if remote:
# wait at most five seconds. If the subprocess is not finished, the
# remote invocation has (hopefully) started a new instance.
try:
rc = p.wait(5)
# if remote call failed, open() will try direct invocation
return not rc
except subprocess.TimeoutExpired:
return True
elif self.background:
if p.poll() is None:
return True
else:
return False
else:
return not p.wait()
def open(self, url, new=0, autoraise=True):
if new == 0:
action = self.remote_action
elif new == 1:
action = self.remote_action_newwin
elif new == 2:
if self.remote_action_newtab is None:
action = self.remote_action_newwin
else:
action = self.remote_action_newtab
else:
raise Error("Bad 'new' parameter to open(); " +
"expected 0, 1, or 2, got %s" % new)
args = [arg.replace("%s", url).replace("%action", action)
for arg in self.remote_args]
args = [arg for arg in args if arg]
success = self._invoke(args, True, autoraise)
if not success:
# remote invocation failed, try straight way
args = [arg.replace("%s", url) for arg in self.args]
return self._invoke(args, False, False)
else:
return True
class Mozilla(UnixBrowser):
"""Launcher class for Mozilla browsers."""
remote_args = ['%action', '%s']
remote_action = ""
remote_action_newwin = "-new-window"
remote_action_newtab = "-new-tab"
background = True
class Netscape(UnixBrowser):
"""Launcher class for Netscape browser."""
raise_opts = ["-noraise", "-raise"]
remote_args = ['-remote', 'openURL(%s%action)']
remote_action = ""
remote_action_newwin = ",new-window"
remote_action_newtab = ",new-tab"
background = True
class Galeon(UnixBrowser):
"""Launcher class for Galeon/Epiphany browsers."""
raise_opts = ["-noraise", ""]
remote_args = ['%action', '%s']
remote_action = "-n"
remote_action_newwin = "-w"
background = True
class Chrome(UnixBrowser):
"Launcher class for Google Chrome browser."
remote_args = ['%action', '%s']
remote_action = ""
remote_action_newwin = "--new-window"
remote_action_newtab = ""
background = True
Chromium = Chrome
class Opera(UnixBrowser):
"Launcher class for Opera browser."
remote_args = ['%action', '%s']
remote_action = ""
remote_action_newwin = "--new-window"
remote_action_newtab = ""
background = True
class Elinks(UnixBrowser):
"Launcher class for Elinks browsers."
remote_args = ['-remote', 'openURL(%s%action)']
remote_action = ""
remote_action_newwin = ",new-window"
remote_action_newtab = ",new-tab"
background = False
# elinks doesn't like its stdout to be redirected -
# it uses redirected stdout as a signal to do -dump
redirect_stdout = False
class Konqueror(BaseBrowser):
"""Controller for the KDE File Manager (kfm, or Konqueror).
See the output of ``kfmclient --commands``
for more information on the Konqueror remote-control interface.
"""
def open(self, url, new=0, autoraise=True):
# XXX Currently I know no way to prevent KFM from opening a new win.
if new == 2:
action = "newTab"
else:
action = "openURL"
devnull = subprocess.DEVNULL
try:
p = subprocess.Popen(["kfmclient", action, url],
close_fds=True, stdin=devnull,
stdout=devnull, stderr=devnull)
except OSError:
# fall through to next variant
pass
else:
p.wait()
# kfmclient's return code unfortunately has no meaning as it seems
return True
try:
p = subprocess.Popen(["konqueror", "--silent", url],
close_fds=True, stdin=devnull,
stdout=devnull, stderr=devnull,
start_new_session=True)
except OSError:
# fall through to next variant
pass
else:
if p.poll() is None:
# Should be running now.
return True
try:
p = subprocess.Popen(["kfm", "-d", url],
close_fds=True, stdin=devnull,
stdout=devnull, stderr=devnull,
start_new_session=True)
except OSError:
return False
else:
return (p.poll() is None)
class Grail(BaseBrowser):
# There should be a way to maintain a connection to Grail, but the
# Grail remote control protocol doesn't really allow that at this
# point. It probably never will!
def _find_grail_rc(self):
import glob
import pwd
import socket
import tempfile
tempdir = os.path.join(tempfile.gettempdir(),
".grail-unix")
user = pwd.getpwuid(os.getuid())[0]
filename = os.path.join(tempdir, user + "-*")
maybes = glob.glob(filename)
if not maybes:
return None
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
for fn in maybes:
# need to PING each one until we find one that's live
try:
s.connect(fn)
except OSError:
# no good; attempt to clean it out, but don't fail:
try:
os.unlink(fn)
except OSError:
pass
else:
return s
def _remote(self, action):
s = self._find_grail_rc()
if not s:
return 0
s.send(action)
s.close()
return 1
def open(self, url, new=0, autoraise=True):
if new:
ok = self._remote("LOADNEW " + url)
else:
ok = self._remote("LOAD " + url)
return ok
#
# Platform support for Unix
#
# These are the right tests because all these Unix browsers require either
# a console terminal or an X display to run.
def register_X_browsers():
# use xdg-open if around
if shutil.which("xdg-open"):
register("xdg-open", None, BackgroundBrowser("xdg-open"))
# The default GNOME3 browser
if "GNOME_DESKTOP_SESSION_ID" in os.environ and shutil.which("gvfs-open"):
register("gvfs-open", None, BackgroundBrowser("gvfs-open"))
# The default GNOME browser
if "GNOME_DESKTOP_SESSION_ID" in os.environ and shutil.which("gnome-open"):
register("gnome-open", None, BackgroundBrowser("gnome-open"))
# The default KDE browser
if "KDE_FULL_SESSION" in os.environ and shutil.which("kfmclient"):
register("kfmclient", Konqueror, Konqueror("kfmclient"))
if shutil.which("x-www-browser"):
register("x-www-browser", None, BackgroundBrowser("x-www-browser"))
# The Mozilla browsers
for browser in ("firefox", "iceweasel", "iceape", "seamonkey"):
if shutil.which(browser):
register(browser, None, Mozilla(browser))
# The Netscape and old Mozilla browsers
for browser in ("mozilla-firefox",
"mozilla-firebird", "firebird",
"mozilla", "netscape"):
if shutil.which(browser):
register(browser, None, Netscape(browser))
# Konqueror/kfm, the KDE browser.
if shutil.which("kfm"):
register("kfm", Konqueror, Konqueror("kfm"))
elif shutil.which("konqueror"):
register("konqueror", Konqueror, Konqueror("konqueror"))
# Gnome's Galeon and Epiphany
for browser in ("galeon", "epiphany"):
if shutil.which(browser):
register(browser, None, Galeon(browser))
# Skipstone, another Gtk/Mozilla based browser
if shutil.which("skipstone"):
register("skipstone", None, BackgroundBrowser("skipstone"))
# Google Chrome/Chromium browsers
for browser in ("google-chrome", "chrome", "chromium", "chromium-browser"):
if shutil.which(browser):
register(browser, None, Chrome(browser))
# Opera, quite popular
if shutil.which("opera"):
register("opera", None, Opera("opera"))
# Next, Mosaic -- old but still in use.
if shutil.which("mosaic"):
register("mosaic", None, BackgroundBrowser("mosaic"))
# Grail, the Python browser. Does anybody still use it?
if shutil.which("grail"):
register("grail", Grail, None)
# Prefer X browsers if present
if os.environ.get("DISPLAY"):
register_X_browsers()
# Also try console browsers
if os.environ.get("TERM"):
if shutil.which("www-browser"):
register("www-browser", None, GenericBrowser("www-browser"))
# The Links/elinks browsers <http://artax.karlin.mff.cuni.cz/~mikulas/links/>
if shutil.which("links"):
register("links", None, GenericBrowser("links"))
if shutil.which("elinks"):
register("elinks", None, Elinks("elinks"))
# The Lynx browser <http://lynx.isc.org/>, <http://lynx.browser.org/>
if shutil.which("lynx"):
register("lynx", None, GenericBrowser("lynx"))
# The w3m browser <http://w3m.sourceforge.net/>
if shutil.which("w3m"):
register("w3m", None, GenericBrowser("w3m"))
#
# Platform support for Windows
#
if sys.platform[:3] == "win":
class WindowsDefault(BaseBrowser):
def open(self, url, new=0, autoraise=True):
try:
os.startfile(url)
except OSError:
# [Error 22] No application is associated with the specified
# file for this operation: '<URL>'
return False
else:
return True
_tryorder = []
_browsers = {}
# First try to use the default Windows browser
register("windows-default", WindowsDefault)
# Detect some common Windows browsers, fallback to IE
iexplore = os.path.join(os.environ.get("PROGRAMFILES", "C:\\Program Files"),
"Internet Explorer\\IEXPLORE.EXE")
for browser in ("firefox", "firebird", "seamonkey", "mozilla",
"netscape", "opera", iexplore):
if shutil.which(browser):
register(browser, None, BackgroundBrowser(browser))
#
# Platform support for MacOS
#
if sys.platform == 'darwin':
# Adapted from patch submitted to SourceForge by Steven J. Burr
class MacOSX(BaseBrowser):
"""Launcher class for Aqua browsers on Mac OS X
Optionally specify a browser name on instantiation. Note that this
will not work for Aqua browsers if the user has moved the application
package after installation.
If no browser is specified, the default browser, as specified in the
Internet System Preferences panel, will be used.
"""
def __init__(self, name):
self.name = name
def open(self, url, new=0, autoraise=True):
assert "'" not in url
# hack for local urls
if not ':' in url:
url = 'file:'+url
# new must be 0 or 1
new = int(bool(new))
if self.name == "default":
# User called open, open_new or get without a browser parameter
script = 'open location "%s"' % url.replace('"', '%22') # opens in default browser
else:
# User called get and chose a browser
if self.name == "OmniWeb":
toWindow = ""
else:
# Include toWindow parameter of OpenURL command for browsers
# that support it. 0 == new window; -1 == existing
toWindow = "toWindow %d" % (new - 1)
cmd = 'OpenURL "%s"' % url.replace('"', '%22')
script = '''tell application "%s"
activate
%s %s
end tell''' % (self.name, cmd, toWindow)
# Open pipe to AppleScript through osascript command
osapipe = os.popen("osascript", "w")
if osapipe is None:
return False
# Write script to osascript's stdin
osapipe.write(script)
rc = osapipe.close()
return not rc
class MacOSXOSAScript(BaseBrowser):
def __init__(self, name):
self._name = name
def open(self, url, new=0, autoraise=True):
if self._name == 'default':
script = 'open location "%s"' % url.replace('"', '%22') # opens in default browser
else:
script = '''
tell application "%s"
activate
open location "%s"
end
'''%(self._name, url.replace('"', '%22'))
osapipe = os.popen("osascript", "w")
if osapipe is None:
return False
osapipe.write(script)
rc = osapipe.close()
return not rc
# Don't clear _tryorder or _browsers since OS X can use above Unix support
# (but we prefer using the OS X specific stuff)
register("safari", None, MacOSXOSAScript('safari'), -1)
register("firefox", None, MacOSXOSAScript('firefox'), -1)
register("chrome", None, MacOSXOSAScript('chrome'), -1)
register("MacOSX", None, MacOSXOSAScript('default'), -1)
# OK, now that we know what the default preference orders for each
# platform are, allow user to override them with the BROWSER variable.
if "BROWSER" in os.environ:
_userchoices = os.environ["BROWSER"].split(os.pathsep)
_userchoices.reverse()
# Treat choices in same way as if passed into get() but do register
# and prepend to _tryorder
for cmdline in _userchoices:
if cmdline != '':
cmd = _synthesize(cmdline, -1)
if cmd[1] is None:
register(cmdline, None, GenericBrowser(cmdline), -1)
cmdline = None # to make del work if _userchoices was empty
del cmdline
del _userchoices
# what to do if _tryorder is now empty?
def main():
import getopt
usage = """Usage: %s [-n | -t] url
-n: open new window
-t: open new tab""" % sys.argv[0]
try:
opts, args = getopt.getopt(sys.argv[1:], 'ntd')
except getopt.error as msg:
print(msg, file=sys.stderr)
print(usage, file=sys.stderr)
sys.exit(1)
new_win = 0
for o, a in opts:
if o == '-n': new_win = 1
elif o == '-t': new_win = 2
if len(args) != 1:
print(usage, file=sys.stderr)
sys.exit(1)
url = args[0]
open(url, new_win)
print("\a")
if __name__ == "__main__":
main()
| 21,759 | 664 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/crypt.py | """Wrapper to the POSIX crypt library call and associated functionality."""
import _crypt
import string as _string
from random import SystemRandom as _SystemRandom
from collections import namedtuple as _namedtuple
_saltchars = _string.ascii_letters + _string.digits + './'
_sr = _SystemRandom()
class _Method(_namedtuple('_Method', 'name ident salt_chars total_size')):
"""Class representing a salt method per the Modular Crypt Format or the
legacy 2-character crypt method."""
def __repr__(self):
return '<crypt.METHOD_{}>'.format(self.name)
def mksalt(method=None):
"""Generate a salt for the specified method.
If not specified, the strongest available method will be used.
"""
if method is None:
method = methods[0]
s = '${}$'.format(method.ident) if method.ident else ''
s += ''.join(_sr.choice(_saltchars) for char in range(method.salt_chars))
return s
def crypt(word, salt=None):
"""Return a string representing the one-way hash of a password, with a salt
prepended.
If ``salt`` is not specified or is ``None``, the strongest
available method will be selected and a salt generated. Otherwise,
``salt`` may be one of the ``crypt.METHOD_*`` values, or a string as
returned by ``crypt.mksalt()``.
"""
if salt is None or isinstance(salt, _Method):
salt = mksalt(salt)
return _crypt.crypt(word, salt)
# available salting/crypto methods
METHOD_CRYPT = _Method('CRYPT', None, 2, 13)
METHOD_MD5 = _Method('MD5', '1', 8, 34)
METHOD_SHA256 = _Method('SHA256', '5', 16, 63)
METHOD_SHA512 = _Method('SHA512', '6', 16, 106)
methods = []
for _method in (METHOD_SHA512, METHOD_SHA256, METHOD_MD5, METHOD_CRYPT):
_result = crypt('', _method)
if _result and len(_result) == _method.total_size:
methods.append(_method)
del _result, _method
| 1,864 | 62 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/subprocess.py | # subprocess - Subprocesses with accessible I/O streams
#
# For more information about this module, see PEP 324.
#
# Copyright (c) 2003-2005 by Peter Astrand <[email protected]>
#
# Licensed to PSF under a Contributor Agreement.
# See http://www.python.org/2.4/license for licensing details.
r"""Subprocesses with accessible I/O streams
This module allows you to spawn processes, connect to their
input/output/error pipes, and obtain their return codes.
For a complete description of this module see the Python documentation.
Main API
========
run(...): Runs a command, waits for it to complete, then returns a
CompletedProcess instance.
Popen(...): A class for flexibly executing a command in a new process
Constants
---------
DEVNULL: Special value that indicates that os.devnull should be used
PIPE: Special value that indicates a pipe should be created
STDOUT: Special value that indicates that stderr should go to stdout
Older API
=========
call(...): Runs a command, waits for it to complete, then returns
the return code.
check_call(...): Same as call() but raises CalledProcessError()
if return code is not 0
check_output(...): Same as check_call() but returns the contents of
stdout instead of a return code
getoutput(...): Runs a command in the shell, waits for it to complete,
then returns the output
getstatusoutput(...): Runs a command in the shell, waits for it to complete,
then returns a (exitcode, output) tuple
"""
import sys
_mswindows = (sys.platform == "win32")
import io
import os
import time
import signal
import builtins
import warnings
import errno
from time import monotonic as _time
# Exception classes used by this module.
class SubprocessError(Exception): pass
class CalledProcessError(SubprocessError):
"""Raised when run() is called with check=True and the process
returns a non-zero exit status.
Attributes:
cmd, returncode, stdout, stderr, output
"""
def __init__(self, returncode, cmd, output=None, stderr=None):
self.returncode = returncode
self.cmd = cmd
self.output = output
self.stderr = stderr
def __str__(self):
if self.returncode and self.returncode < 0:
try:
return "Command '%s' died with %r." % (
self.cmd, signal.Signals(-self.returncode))
except ValueError:
return "Command '%s' died with unknown signal %d." % (
self.cmd, -self.returncode)
else:
return "Command '%s' returned non-zero exit status %d." % (
self.cmd, self.returncode)
@property
def stdout(self):
"""Alias for output attribute, to match stderr"""
return self.output
@stdout.setter
def stdout(self, value):
# There's no obvious reason to set this, but allow it anyway so
# .stdout is a transparent alias for .output
self.output = value
class TimeoutExpired(SubprocessError):
"""This exception is raised when the timeout expires while waiting for a
child process.
Attributes:
cmd, output, stdout, stderr, timeout
"""
def __init__(self, cmd, timeout, output=None, stderr=None):
self.cmd = cmd
self.timeout = timeout
self.output = output
self.stderr = stderr
def __str__(self):
return ("Command '%s' timed out after %s seconds" %
(self.cmd, self.timeout))
@property
def stdout(self):
return self.output
@stdout.setter
def stdout(self, value):
# There's no obvious reason to set this, but allow it anyway so
# .stdout is a transparent alias for .output
self.output = value
if _mswindows:
import threading
import msvcrt
import _winapi
class STARTUPINFO:
dwFlags = 0
hStdInput = None
hStdOutput = None
hStdError = None
wShowWindow = 0
else:
import _posixsubprocess
import select
import selectors
try:
import threading
except ImportError:
import dummy_threading as threading
# When select or poll has indicated that the file is writable,
# we can write up to _PIPE_BUF bytes without risk of blocking.
# POSIX defines PIPE_BUF as >= 512.
_PIPE_BUF = getattr(select, 'PIPE_BUF', 512)
# poll/select have the advantage of not requiring any extra file
# descriptor, contrarily to epoll/kqueue (also, they require a single
# syscall).
if hasattr(selectors, 'PollSelector'):
_PopenSelector = selectors.PollSelector
else:
_PopenSelector = selectors.SelectSelector
__all__ = ["Popen", "PIPE", "STDOUT", "call", "check_call", "getstatusoutput",
"getoutput", "check_output", "run", "CalledProcessError", "DEVNULL",
"SubprocessError", "TimeoutExpired", "CompletedProcess"]
# NOTE: We intentionally exclude list2cmdline as it is
# considered an internal implementation detail. issue10838.
# if _mswindows:
# from _winapi import (CREATE_NEW_CONSOLE, CREATE_NEW_PROCESS_GROUP,
# STD_INPUT_HANDLE, STD_OUTPUT_HANDLE,
# STD_ERROR_HANDLE, SW_HIDE,
# STARTF_USESTDHANDLES, STARTF_USESHOWWINDOW)
# __all__.extend(["CREATE_NEW_CONSOLE", "CREATE_NEW_PROCESS_GROUP",
# "STD_INPUT_HANDLE", "STD_OUTPUT_HANDLE",
# "STD_ERROR_HANDLE", "SW_HIDE",
# "STARTF_USESTDHANDLES", "STARTF_USESHOWWINDOW",
# "STARTUPINFO"])
# class Handle(int):
# closed = False
# def Close(self, CloseHandle=_winapi.CloseHandle):
# if not self.closed:
# self.closed = True
# CloseHandle(self)
# def Detach(self):
# if not self.closed:
# self.closed = True
# return int(self)
# raise ValueError("already closed")
# def __repr__(self):
# return "%s(%d)" % (self.__class__.__name__, int(self))
# __del__ = Close
# __str__ = __repr__
# This lists holds Popen instances for which the underlying process had not
# exited at the time its __del__ method got called: those processes are wait()ed
# for synchronously from _cleanup() when a new Popen object is created, to avoid
# zombie processes.
_active = []
def _cleanup():
for inst in _active[:]:
res = inst._internal_poll(_deadstate=sys.maxsize)
if res is not None:
try:
_active.remove(inst)
except ValueError:
# This can happen if two threads create a new Popen instance.
# It's harmless that it was already removed, so ignore.
pass
PIPE = -1
STDOUT = -2
DEVNULL = -3
# XXX This function is only used by multiprocessing and the test suite,
# but it's here so that it can be imported when Python is compiled without
# threads.
def _optim_args_from_interpreter_flags():
"""Return a list of command-line arguments reproducing the current
optimization settings in sys.flags."""
args = []
value = sys.flags.optimize
if value > 0:
args.append('-' + 'O' * value)
return args
def _args_from_interpreter_flags():
"""Return a list of command-line arguments reproducing the current
settings in sys.flags, sys.warnoptions and sys._xoptions."""
flag_opt_map = {
'debug': 'd',
# 'inspect': 'i',
# 'interactive': 'i',
'dont_write_bytecode': 'B',
'no_site': 'S',
'verbose': 'v',
'bytes_warning': 'b',
'quiet': 'q',
# -O is handled in _optim_args_from_interpreter_flags()
}
args = _optim_args_from_interpreter_flags()
for flag, opt in flag_opt_map.items():
v = getattr(sys.flags, flag)
if v > 0:
args.append('-' + opt * v)
if sys.flags.isolated:
args.append('-I')
else:
if sys.flags.ignore_environment:
args.append('-E')
if sys.flags.no_user_site:
args.append('-s')
for opt in sys.warnoptions:
args.append('-W' + opt)
# -X options
xoptions = getattr(sys, '_xoptions', {})
for opt in ('faulthandler', 'showalloccount',
'showrefcount', 'utf8'):
if opt in xoptions:
value = xoptions[opt]
if value is True:
arg = opt
else:
arg = '%s=%s' % (opt, value)
args.extend(('-X', arg))
return args
def call(*popenargs, timeout=None, **kwargs):
"""Run command with arguments. Wait for command to complete or
timeout, then return the returncode attribute.
The arguments are the same as for the Popen constructor. Example:
retcode = call(["ls", "-l"])
"""
with Popen(*popenargs, **kwargs) as p:
try:
return p.wait(timeout=timeout)
except:
p.kill()
p.wait()
raise
def check_call(*popenargs, **kwargs):
"""Run command with arguments. Wait for command to complete. If
the exit code was zero then return, otherwise raise
CalledProcessError. The CalledProcessError object will have the
return code in the returncode attribute.
The arguments are the same as for the call function. Example:
check_call(["ls", "-l"])
"""
retcode = call(*popenargs, **kwargs)
if retcode:
cmd = kwargs.get("args")
if cmd is None:
cmd = popenargs[0]
raise CalledProcessError(retcode, cmd)
return 0
def check_output(*popenargs, timeout=None, **kwargs):
r"""Run command with arguments and return its output.
If the exit code was non-zero it raises a CalledProcessError. The
CalledProcessError object will have the return code in the returncode
attribute and output in the output attribute.
The arguments are the same as for the Popen constructor. Example:
>>> check_output(["ls", "-l", "/dev/null"])
b'crw-rw-rw- 1 root root 1, 3 Oct 18 2007 /dev/null\n'
The stdout argument is not allowed as it is used internally.
To capture standard error in the result, use stderr=STDOUT.
>>> check_output(["/bin/sh", "-c",
... "ls -l non_existent_file ; exit 0"],
... stderr=STDOUT)
b'ls: non_existent_file: No such file or directory\n'
There is an additional optional argument, "input", allowing you to
pass a string to the subprocess's stdin. If you use this argument
you may not also use the Popen constructor's "stdin" argument, as
it too will be used internally. Example:
>>> check_output(["sed", "-e", "s/foo/bar/"],
... input=b"when in the course of fooman events\n")
b'when in the course of barman events\n'
If universal_newlines=True is passed, the "input" argument must be a
string and the return value will be a string rather than bytes.
"""
if 'stdout' in kwargs:
raise ValueError('stdout argument not allowed, it will be overridden.')
if 'input' in kwargs and kwargs['input'] is None:
# Explicitly passing input=None was previously equivalent to passing an
# empty string. That is maintained here for backwards compatibility.
kwargs['input'] = '' if kwargs.get('universal_newlines', False) else b''
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
**kwargs).stdout
class CompletedProcess(object):
"""A process that has finished running.
This is returned by run().
Attributes:
args: The list or str args passed to run().
returncode: The exit code of the process, negative for signals.
stdout: The standard output (None if not captured).
stderr: The standard error (None if not captured).
"""
def __init__(self, args, returncode, stdout=None, stderr=None):
self.args = args
self.returncode = returncode
self.stdout = stdout
self.stderr = stderr
def __repr__(self):
args = ['args={!r}'.format(self.args),
'returncode={!r}'.format(self.returncode)]
if self.stdout is not None:
args.append('stdout={!r}'.format(self.stdout))
if self.stderr is not None:
args.append('stderr={!r}'.format(self.stderr))
return "{}({})".format(type(self).__name__, ', '.join(args))
def check_returncode(self):
"""Raise CalledProcessError if the exit code is non-zero."""
if self.returncode:
raise CalledProcessError(self.returncode, self.args, self.stdout,
self.stderr)
def run(*popenargs, input=None, timeout=None, check=False, **kwargs):
"""Run command with arguments and return a CompletedProcess instance.
The returned instance will have attributes args, returncode, stdout and
stderr. By default, stdout and stderr are not captured, and those attributes
will be None. Pass stdout=PIPE and/or stderr=PIPE in order to capture them.
If check is True and the exit code was non-zero, it raises a
CalledProcessError. The CalledProcessError object will have the return code
in the returncode attribute, and output & stderr attributes if those streams
were captured.
If timeout is given, and the process takes too long, a TimeoutExpired
exception will be raised.
There is an optional argument "input", allowing you to
pass a string to the subprocess's stdin. If you use this argument
you may not also use the Popen constructor's "stdin" argument, as
it will be used internally.
The other arguments are the same as for the Popen constructor.
If universal_newlines=True is passed, the "input" argument must be a
string and stdout/stderr in the returned object will be strings rather than
bytes.
"""
if input is not None:
if 'stdin' in kwargs:
raise ValueError('stdin and input arguments may not both be used.')
kwargs['stdin'] = PIPE
with Popen(*popenargs, **kwargs) as process:
try:
stdout, stderr = process.communicate(input, timeout=timeout)
except TimeoutExpired:
process.kill()
stdout, stderr = process.communicate()
raise TimeoutExpired(process.args, timeout, output=stdout,
stderr=stderr)
except:
process.kill()
process.wait()
raise
retcode = process.poll()
if check and retcode:
raise CalledProcessError(retcode, process.args,
output=stdout, stderr=stderr)
return CompletedProcess(process.args, retcode, stdout, stderr)
def list2cmdline(seq):
"""
Translate a sequence of arguments into a command line
string, using the same rules as the MS C runtime:
1) Arguments are delimited by white space, which is either a
space or a tab.
2) A string surrounded by double quotation marks is
interpreted as a single argument, regardless of white space
contained within. A quoted string can be embedded in an
argument.
3) A double quotation mark preceded by a backslash is
interpreted as a literal double quotation mark.
4) Backslashes are interpreted literally, unless they
immediately precede a double quotation mark.
5) If backslashes immediately precede a double quotation mark,
every pair of backslashes is interpreted as a literal
backslash. If the number of backslashes is odd, the last
backslash escapes the next double quotation mark as
described in rule 3.
"""
# See
# http://msdn.microsoft.com/en-us/library/17w5ykft.aspx
# or search http://msdn.microsoft.com for
# "Parsing C++ Command-Line Arguments"
result = []
needquote = False
for arg in seq:
bs_buf = []
# Add a space to separate this argument from the others
if result:
result.append(' ')
needquote = (" " in arg) or ("\t" in arg) or not arg
if needquote:
result.append('"')
for c in arg:
if c == '\\':
# Don't know if we need to double yet.
bs_buf.append(c)
elif c == '"':
# Double backslashes.
result.append('\\' * len(bs_buf)*2)
bs_buf = []
result.append('\\"')
else:
# Normal char
if bs_buf:
result.extend(bs_buf)
bs_buf = []
result.append(c)
# Add remaining backslashes, if any.
if bs_buf:
result.extend(bs_buf)
if needquote:
result.extend(bs_buf)
result.append('"')
return ''.join(result)
# Various tools for executing commands and looking at their output and status.
#
def getstatusoutput(cmd):
"""Return (exitcode, output) of executing cmd in a shell.
Execute the string 'cmd' in a shell with 'check_output' and
return a 2-tuple (status, output). The locale encoding is used
to decode the output and process newlines.
A trailing newline is stripped from the output.
The exit status for the command can be interpreted
according to the rules for the function 'wait'. Example:
>>> import subprocess
>>> subprocess.getstatusoutput('ls /bin/ls')
(0, '/bin/ls')
>>> subprocess.getstatusoutput('cat /bin/junk')
(1, 'cat: /bin/junk: No such file or directory')
>>> subprocess.getstatusoutput('/bin/junk')
(127, 'sh: /bin/junk: not found')
>>> subprocess.getstatusoutput('/bin/kill $$')
(-15, '')
"""
try:
data = check_output(cmd, shell=True, universal_newlines=True, stderr=STDOUT)
exitcode = 0
except CalledProcessError as ex:
data = ex.output
exitcode = ex.returncode
if data[-1:] == '\n':
data = data[:-1]
return exitcode, data
def getoutput(cmd):
"""Return output (stdout or stderr) of executing cmd in a shell.
Like getstatusoutput(), except the exit status is ignored and the return
value is a string containing the command's output. Example:
>>> import subprocess
>>> subprocess.getoutput('ls /bin/ls')
'/bin/ls'
"""
return getstatusoutput(cmd)[1]
_PLATFORM_DEFAULT_CLOSE_FDS = object()
class Popen(object):
""" Execute a child program in a new process.
For a complete description of the arguments see the Python documentation.
Arguments:
args: A string, or a sequence of program arguments.
bufsize: supplied as the buffering argument to the open() function when
creating the stdin/stdout/stderr pipe file objects
executable: A replacement program to execute.
stdin, stdout and stderr: These specify the executed programs' standard
input, standard output and standard error file handles, respectively.
preexec_fn: (POSIX only) An object to be called in the child process
just before the child is executed.
close_fds: Controls closing or inheriting of file descriptors.
shell: If true, the command will be executed through the shell.
cwd: Sets the current directory before the child is executed.
env: Defines the environment variables for the new process.
universal_newlines: If true, use universal line endings for file
objects stdin, stdout and stderr.
startupinfo and creationflags (Windows only)
restore_signals (POSIX only)
start_new_session (POSIX only)
pass_fds (POSIX only)
encoding and errors: Text mode encoding and error handling to use for
file objects stdin, stdout and stderr.
Attributes:
stdin, stdout, stderr, pid, returncode
"""
_child_created = False # Set here since __del__ checks it
def __init__(self, args, bufsize=-1, executable=None,
stdin=None, stdout=None, stderr=None,
preexec_fn=None, close_fds=_PLATFORM_DEFAULT_CLOSE_FDS,
shell=False, cwd=None, env=None, universal_newlines=False,
startupinfo=None, creationflags=0,
restore_signals=True, start_new_session=False,
pass_fds=(), *, encoding=None, errors=None):
"""Create new Popen instance."""
_cleanup()
# Held while anything is calling waitpid before returncode has been
# updated to prevent clobbering returncode if wait() or poll() are
# called from multiple threads at once. After acquiring the lock,
# code must re-check self.returncode to see if another thread just
# finished a waitpid() call.
self._waitpid_lock = threading.Lock()
self._input = None
self._communication_started = False
if bufsize is None:
bufsize = -1 # Restore default
if not isinstance(bufsize, int):
raise TypeError("bufsize must be an integer")
if _mswindows:
if preexec_fn is not None:
raise ValueError("preexec_fn is not supported on Windows "
"platforms")
any_stdio_set = (stdin is not None or stdout is not None or
stderr is not None)
if close_fds is _PLATFORM_DEFAULT_CLOSE_FDS:
if any_stdio_set:
close_fds = False
else:
close_fds = True
elif close_fds and any_stdio_set:
raise ValueError(
"close_fds is not supported on Windows platforms"
" if you redirect stdin/stdout/stderr")
else:
# POSIX
if close_fds is _PLATFORM_DEFAULT_CLOSE_FDS:
close_fds = True
if pass_fds and not close_fds:
warnings.warn("pass_fds overriding close_fds.", RuntimeWarning)
close_fds = True
if startupinfo is not None:
raise ValueError("startupinfo is only supported on Windows "
"platforms")
if creationflags != 0:
raise ValueError("creationflags is only supported on Windows "
"platforms")
self.args = args
self.stdin = None
self.stdout = None
self.stderr = None
self.pid = None
self.returncode = None
self.universal_newlines = universal_newlines
self.encoding = encoding
self.errors = errors
# Input and output objects. The general principle is like
# this:
#
# Parent Child
# ------ -----
# p2cwrite ---stdin---> p2cread
# c2pread <--stdout--- c2pwrite
# errread <--stderr--- errwrite
#
# On POSIX, the child objects are file descriptors. On
# Windows, these are Windows file handles. The parent objects
# are file descriptors on both platforms. The parent objects
# are -1 when not using PIPEs. The child objects are -1
# when not redirecting.
(p2cread, p2cwrite,
c2pread, c2pwrite,
errread, errwrite) = self._get_handles(stdin, stdout, stderr)
# We wrap OS handles *before* launching the child, otherwise a
# quickly terminating child could make our fds unwrappable
# (see #8458).
if _mswindows:
if p2cwrite != -1:
p2cwrite = msvcrt.open_osfhandle(p2cwrite.Detach(), 0)
if c2pread != -1:
c2pread = msvcrt.open_osfhandle(c2pread.Detach(), 0)
if errread != -1:
errread = msvcrt.open_osfhandle(errread.Detach(), 0)
text_mode = encoding or errors or universal_newlines
self._closed_child_pipe_fds = False
try:
if p2cwrite != -1:
self.stdin = io.open(p2cwrite, 'wb', bufsize)
if text_mode:
self.stdin = io.TextIOWrapper(self.stdin, write_through=True,
line_buffering=(bufsize == 1),
encoding=encoding, errors=errors)
if c2pread != -1:
self.stdout = io.open(c2pread, 'rb', bufsize)
if text_mode:
self.stdout = io.TextIOWrapper(self.stdout,
encoding=encoding, errors=errors)
if errread != -1:
self.stderr = io.open(errread, 'rb', bufsize)
if text_mode:
self.stderr = io.TextIOWrapper(self.stderr,
encoding=encoding, errors=errors)
self._execute_child(args, executable, preexec_fn, close_fds,
pass_fds, cwd, env,
startupinfo, creationflags, shell,
p2cread, p2cwrite,
c2pread, c2pwrite,
errread, errwrite,
restore_signals, start_new_session)
except:
# Cleanup if the child failed starting.
for f in filter(None, (self.stdin, self.stdout, self.stderr)):
try:
f.close()
except OSError:
pass # Ignore EBADF or other errors.
if not self._closed_child_pipe_fds:
to_close = []
if stdin == PIPE:
to_close.append(p2cread)
if stdout == PIPE:
to_close.append(c2pwrite)
if stderr == PIPE:
to_close.append(errwrite)
if hasattr(self, '_devnull'):
to_close.append(self._devnull)
for fd in to_close:
try:
if _mswindows and isinstance(fd, Handle):
fd.Close()
else:
os.close(fd)
except OSError:
pass
raise
def _translate_newlines(self, data, encoding, errors):
data = data.decode(encoding, errors)
return data.replace("\r\n", "\n").replace("\r", "\n")
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
if self.stdout:
self.stdout.close()
if self.stderr:
self.stderr.close()
try: # Flushing a BufferedWriter may raise an error
if self.stdin:
self.stdin.close()
finally:
# Wait for the process to terminate, to avoid zombies.
self.wait()
def __del__(self, _maxsize=sys.maxsize, _warn=warnings.warn):
if not self._child_created:
# We didn't get to successfully create a child process.
return
if self.returncode is None:
# Not reading subprocess exit status creates a zombi process which
# is only destroyed at the parent python process exit
_warn("subprocess %s is still running" % self.pid,
ResourceWarning, source=self)
# In case the child hasn't been waited on, check if it's done.
self._internal_poll(_deadstate=_maxsize)
if self.returncode is None and _active is not None:
# Child is still running, keep us alive until we can wait on it.
_active.append(self)
def _get_devnull(self):
if not hasattr(self, '_devnull'):
self._devnull = os.open(os.devnull, os.O_RDWR)
return self._devnull
def _stdin_write(self, input):
if input:
try:
self.stdin.write(input)
except BrokenPipeError:
pass # communicate() must ignore broken pipe errors.
except OSError as exc:
if exc.errno == errno.EINVAL:
# bpo-19612, bpo-30418: On Windows, stdin.write() fails
# with EINVAL if the child process exited or if the child
# process is still running but closed the pipe.
pass
else:
raise
try:
self.stdin.close()
except BrokenPipeError:
pass # communicate() must ignore broken pipe errors.
except OSError as exc:
if exc.errno == errno.EINVAL:
pass
else:
raise
def communicate(self, input=None, timeout=None):
"""Interact with process: Send data to stdin. Read data from
stdout and stderr, until end-of-file is reached. Wait for
process to terminate.
The optional "input" argument should be data to be sent to the
child process (if self.universal_newlines is True, this should
be a string; if it is False, "input" should be bytes), or
None, if no data should be sent to the child.
communicate() returns a tuple (stdout, stderr). These will be
bytes or, if self.universal_newlines was True, a string.
"""
if self._communication_started and input:
raise ValueError("Cannot send input after starting communication")
# Optimization: If we are not worried about timeouts, we haven't
# started communicating, and we have one or zero pipes, using select()
# or threads is unnecessary.
if (timeout is None and not self._communication_started and
[self.stdin, self.stdout, self.stderr].count(None) >= 2):
stdout = None
stderr = None
if self.stdin:
self._stdin_write(input)
elif self.stdout:
stdout = self.stdout.read()
self.stdout.close()
elif self.stderr:
stderr = self.stderr.read()
self.stderr.close()
self.wait()
else:
if timeout is not None:
endtime = _time() + timeout
else:
endtime = None
try:
stdout, stderr = self._communicate(input, endtime, timeout)
finally:
self._communication_started = True
sts = self.wait(timeout=self._remaining_time(endtime))
return (stdout, stderr)
def poll(self):
"""Check if child process has terminated. Set and return returncode
attribute."""
return self._internal_poll()
def _remaining_time(self, endtime):
"""Convenience for _communicate when computing timeouts."""
if endtime is None:
return None
else:
return endtime - _time()
def _check_timeout(self, endtime, orig_timeout):
"""Convenience for checking if a timeout has expired."""
if endtime is None:
return
if _time() > endtime:
raise TimeoutExpired(self.args, orig_timeout)
if _mswindows:
#
# Windows methods
#
def _get_handles(self, stdin, stdout, stderr):
"""Construct and return tuple with IO objects:
p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
"""
if stdin is None and stdout is None and stderr is None:
return (-1, -1, -1, -1, -1, -1)
p2cread, p2cwrite = -1, -1
c2pread, c2pwrite = -1, -1
errread, errwrite = -1, -1
if stdin is None:
p2cread = _winapi.GetStdHandle(_winapi.STD_INPUT_HANDLE)
if p2cread is None:
p2cread, _ = _winapi.CreatePipe(None, 0)
p2cread = Handle(p2cread)
_winapi.CloseHandle(_)
elif stdin == PIPE:
p2cread, p2cwrite = _winapi.CreatePipe(None, 0)
p2cread, p2cwrite = Handle(p2cread), Handle(p2cwrite)
elif stdin == DEVNULL:
p2cread = msvcrt.get_osfhandle(self._get_devnull())
elif isinstance(stdin, int):
p2cread = msvcrt.get_osfhandle(stdin)
else:
# Assuming file-like object
p2cread = msvcrt.get_osfhandle(stdin.fileno())
p2cread = self._make_inheritable(p2cread)
if stdout is None:
c2pwrite = _winapi.GetStdHandle(_winapi.STD_OUTPUT_HANDLE)
if c2pwrite is None:
_, c2pwrite = _winapi.CreatePipe(None, 0)
c2pwrite = Handle(c2pwrite)
_winapi.CloseHandle(_)
elif stdout == PIPE:
c2pread, c2pwrite = _winapi.CreatePipe(None, 0)
c2pread, c2pwrite = Handle(c2pread), Handle(c2pwrite)
elif stdout == DEVNULL:
c2pwrite = msvcrt.get_osfhandle(self._get_devnull())
elif isinstance(stdout, int):
c2pwrite = msvcrt.get_osfhandle(stdout)
else:
# Assuming file-like object
c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
c2pwrite = self._make_inheritable(c2pwrite)
if stderr is None:
errwrite = _winapi.GetStdHandle(_winapi.STD_ERROR_HANDLE)
if errwrite is None:
_, errwrite = _winapi.CreatePipe(None, 0)
errwrite = Handle(errwrite)
_winapi.CloseHandle(_)
elif stderr == PIPE:
errread, errwrite = _winapi.CreatePipe(None, 0)
errread, errwrite = Handle(errread), Handle(errwrite)
elif stderr == STDOUT:
errwrite = c2pwrite
elif stderr == DEVNULL:
errwrite = msvcrt.get_osfhandle(self._get_devnull())
elif isinstance(stderr, int):
errwrite = msvcrt.get_osfhandle(stderr)
else:
# Assuming file-like object
errwrite = msvcrt.get_osfhandle(stderr.fileno())
errwrite = self._make_inheritable(errwrite)
return (p2cread, p2cwrite,
c2pread, c2pwrite,
errread, errwrite)
def _make_inheritable(self, handle):
"""Return a duplicate of handle, which is inheritable"""
h = _winapi.DuplicateHandle(
_winapi.GetCurrentProcess(), handle,
_winapi.GetCurrentProcess(), 0, 1,
_winapi.DUPLICATE_SAME_ACCESS)
return Handle(h)
def _execute_child(self, args, executable, preexec_fn, close_fds,
pass_fds, cwd, env,
startupinfo, creationflags, shell,
p2cread, p2cwrite,
c2pread, c2pwrite,
errread, errwrite,
unused_restore_signals, unused_start_new_session):
"""Execute program (MS Windows version)"""
assert not pass_fds, "pass_fds not supported on Windows."
if not isinstance(args, str):
args = list2cmdline(args)
# Process startup details
if startupinfo is None:
startupinfo = STARTUPINFO()
if -1 not in (p2cread, c2pwrite, errwrite):
startupinfo.dwFlags |= _winapi.STARTF_USESTDHANDLES
startupinfo.hStdInput = p2cread
startupinfo.hStdOutput = c2pwrite
startupinfo.hStdError = errwrite
if shell:
startupinfo.dwFlags |= _winapi.STARTF_USESHOWWINDOW
startupinfo.wShowWindow = _winapi.SW_HIDE
comspec = os.environ.get("COMSPEC", "cmd.exe")
args = '{} /c "{}"'.format (comspec, args)
# Start the process
try:
hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
# no special security
None, None,
int(not close_fds),
creationflags,
env,
os.fspath(cwd) if cwd is not None else None,
startupinfo)
finally:
# Child is launched. Close the parent's copy of those pipe
# handles that only the child should have open. You need
# to make sure that no handles to the write end of the
# output pipe are maintained in this process or else the
# pipe will not close when the child process exits and the
# ReadFile will hang.
if p2cread != -1:
p2cread.Close()
if c2pwrite != -1:
c2pwrite.Close()
if errwrite != -1:
errwrite.Close()
if hasattr(self, '_devnull'):
os.close(self._devnull)
# Prevent a double close of these handles/fds from __init__
# on error.
self._closed_child_pipe_fds = True
# Retain the process handle, but close the thread handle
self._child_created = True
self._handle = Handle(hp)
self.pid = pid
_winapi.CloseHandle(ht)
def _internal_poll(self, _deadstate=None,
_WaitForSingleObject=_winapi.WaitForSingleObject,
_WAIT_OBJECT_0=_winapi.WAIT_OBJECT_0,
_GetExitCodeProcess=_winapi.GetExitCodeProcess):
"""Check if child process has terminated. Returns returncode
attribute.
This method is called by __del__, so it can only refer to objects
in its local scope.
"""
if self.returncode is None:
if _WaitForSingleObject(self._handle, 0) == _WAIT_OBJECT_0:
self.returncode = _GetExitCodeProcess(self._handle)
return self.returncode
def wait(self, timeout=None, endtime=None):
"""Wait for child process to terminate. Returns returncode
attribute."""
if endtime is not None:
warnings.warn(
"'endtime' argument is deprecated; use 'timeout'.",
DeprecationWarning,
stacklevel=2)
timeout = self._remaining_time(endtime)
if timeout is None:
timeout_millis = _winapi.INFINITE
else:
timeout_millis = int(timeout * 1000)
if self.returncode is None:
result = _winapi.WaitForSingleObject(self._handle,
timeout_millis)
if result == _winapi.WAIT_TIMEOUT:
raise TimeoutExpired(self.args, timeout)
self.returncode = _winapi.GetExitCodeProcess(self._handle)
return self.returncode
def _readerthread(self, fh, buffer):
buffer.append(fh.read())
fh.close()
def _communicate(self, input, endtime, orig_timeout):
# Start reader threads feeding into a list hanging off of this
# object, unless they've already been started.
if self.stdout and not hasattr(self, "_stdout_buff"):
self._stdout_buff = []
self.stdout_thread = \
threading.Thread(target=self._readerthread,
args=(self.stdout, self._stdout_buff))
self.stdout_thread.daemon = True
self.stdout_thread.start()
if self.stderr and not hasattr(self, "_stderr_buff"):
self._stderr_buff = []
self.stderr_thread = \
threading.Thread(target=self._readerthread,
args=(self.stderr, self._stderr_buff))
self.stderr_thread.daemon = True
self.stderr_thread.start()
if self.stdin:
self._stdin_write(input)
# Wait for the reader threads, or time out. If we time out, the
# threads remain reading and the fds left open in case the user
# calls communicate again.
if self.stdout is not None:
self.stdout_thread.join(self._remaining_time(endtime))
if self.stdout_thread.is_alive():
raise TimeoutExpired(self.args, orig_timeout)
if self.stderr is not None:
self.stderr_thread.join(self._remaining_time(endtime))
if self.stderr_thread.is_alive():
raise TimeoutExpired(self.args, orig_timeout)
# Collect the output from and close both pipes, now that we know
# both have been read successfully.
stdout = None
stderr = None
if self.stdout:
stdout = self._stdout_buff
self.stdout.close()
if self.stderr:
stderr = self._stderr_buff
self.stderr.close()
# All data exchanged. Translate lists into strings.
if stdout is not None:
stdout = stdout[0]
if stderr is not None:
stderr = stderr[0]
return (stdout, stderr)
def send_signal(self, sig):
"""Send a signal to the process."""
# Don't signal a process that we know has already died.
if self.returncode is not None:
return
if sig == signal.SIGTERM:
self.terminate()
elif sig == signal.CTRL_C_EVENT:
os.kill(self.pid, signal.CTRL_C_EVENT)
elif sig == signal.CTRL_BREAK_EVENT:
os.kill(self.pid, signal.CTRL_BREAK_EVENT)
else:
raise ValueError("Unsupported signal: {}".format(sig))
def terminate(self):
"""Terminates the process."""
# Don't terminate a process that we know has already died.
if self.returncode is not None:
return
try:
_winapi.TerminateProcess(self._handle, 1)
except PermissionError:
# ERROR_ACCESS_DENIED (winerror 5) is received when the
# process already died.
rc = _winapi.GetExitCodeProcess(self._handle)
if rc == _winapi.STILL_ACTIVE:
raise
self.returncode = rc
kill = terminate
else:
#
# POSIX methods
#
def _get_handles(self, stdin, stdout, stderr):
"""Construct and return tuple with IO objects:
p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
"""
p2cread, p2cwrite = -1, -1
c2pread, c2pwrite = -1, -1
errread, errwrite = -1, -1
if stdin is None:
pass
elif stdin == PIPE:
p2cread, p2cwrite = os.pipe()
elif stdin == DEVNULL:
p2cread = self._get_devnull()
elif isinstance(stdin, int):
p2cread = stdin
else:
# Assuming file-like object
p2cread = stdin.fileno()
if stdout is None:
pass
elif stdout == PIPE:
c2pread, c2pwrite = os.pipe()
elif stdout == DEVNULL:
c2pwrite = self._get_devnull()
elif isinstance(stdout, int):
c2pwrite = stdout
else:
# Assuming file-like object
c2pwrite = stdout.fileno()
if stderr is None:
pass
elif stderr == PIPE:
errread, errwrite = os.pipe()
elif stderr == STDOUT:
if c2pwrite != -1:
errwrite = c2pwrite
else: # child's stdout is not set, use parent's stdout
errwrite = sys.__stdout__.fileno()
elif stderr == DEVNULL:
errwrite = self._get_devnull()
elif isinstance(stderr, int):
errwrite = stderr
else:
# Assuming file-like object
errwrite = stderr.fileno()
return (p2cread, p2cwrite,
c2pread, c2pwrite,
errread, errwrite)
def _execute_child(self, args, executable, preexec_fn, close_fds,
pass_fds, cwd, env,
startupinfo, creationflags, shell,
p2cread, p2cwrite,
c2pread, c2pwrite,
errread, errwrite,
restore_signals, start_new_session):
"""Execute program (POSIX version)"""
if isinstance(args, (str, bytes)):
args = [args]
else:
args = list(args)
if shell:
args = ["/bin/sh", "-c"] + args
if executable:
args[0] = executable
if executable is None:
executable = args[0]
orig_executable = executable
# For transferring possible exec failure from child to parent.
# Data format: "exception name:hex errno:description"
# Pickle is not used; it is complex and involves memory allocation.
errpipe_read, errpipe_write = os.pipe()
# errpipe_write must not be in the standard io 0, 1, or 2 fd range.
low_fds_to_close = []
while errpipe_write < 3:
low_fds_to_close.append(errpipe_write)
errpipe_write = os.dup(errpipe_write)
for low_fd in low_fds_to_close:
os.close(low_fd)
try:
try:
# We must avoid complex work that could involve
# malloc or free in the child process to avoid
# potential deadlocks, thus we do all this here.
# and pass it to fork_exec()
if env is not None:
env_list = []
for k, v in env.items():
k = os.fsencode(k)
if b'=' in k:
raise ValueError("illegal environment variable name")
env_list.append(k + b'=' + os.fsencode(v))
else:
env_list = None # Use execv instead of execve.
executable = os.fsencode(executable)
if os.path.dirname(executable):
executable_list = (executable,)
else:
# This matches the behavior of os._execvpe().
executable_list = tuple(
os.path.join(os.fsencode(dir), executable)
for dir in os.get_exec_path(env))
fds_to_keep = set(pass_fds)
fds_to_keep.add(errpipe_write)
self.pid = _posixsubprocess.fork_exec(
args, executable_list,
close_fds, tuple(sorted(map(int, fds_to_keep))),
cwd, env_list,
p2cread, p2cwrite, c2pread, c2pwrite,
errread, errwrite,
errpipe_read, errpipe_write,
restore_signals, start_new_session, preexec_fn)
self._child_created = True
finally:
# be sure the FD is closed no matter what
os.close(errpipe_write)
# self._devnull is not always defined.
devnull_fd = getattr(self, '_devnull', None)
if p2cread != -1 and p2cwrite != -1 and p2cread != devnull_fd:
os.close(p2cread)
if c2pwrite != -1 and c2pread != -1 and c2pwrite != devnull_fd:
os.close(c2pwrite)
if errwrite != -1 and errread != -1 and errwrite != devnull_fd:
os.close(errwrite)
if devnull_fd is not None:
os.close(devnull_fd)
# Prevent a double close of these fds from __init__ on error.
self._closed_child_pipe_fds = True
# Wait for exec to fail or succeed; possibly raising an
# exception (limited in size)
errpipe_data = bytearray()
while True:
part = os.read(errpipe_read, 50000)
errpipe_data += part
if not part or len(errpipe_data) > 50000:
break
finally:
# be sure the FD is closed no matter what
os.close(errpipe_read)
if errpipe_data:
try:
pid, sts = os.waitpid(self.pid, 0)
if pid == self.pid:
self._handle_exitstatus(sts)
else:
self.returncode = sys.maxsize
except ChildProcessError:
pass
try:
exception_name, hex_errno, err_msg = (
errpipe_data.split(b':', 2))
# The encoding here should match the encoding
# written in by the subprocess implementations
# like _posixsubprocess
err_msg = err_msg.decode()
except ValueError:
exception_name = b'SubprocessError'
hex_errno = b'0'
err_msg = 'Bad exception data from child: {!r}'.format(
bytes(errpipe_data))
child_exception_type = getattr(
builtins, exception_name.decode('ascii'),
SubprocessError)
if issubclass(child_exception_type, OSError) and hex_errno:
errno_num = int(hex_errno, 16)
child_exec_never_called = (err_msg == "noexec")
if child_exec_never_called:
err_msg = ""
# The error must be from chdir(cwd).
err_filename = cwd
else:
err_filename = orig_executable
if errno_num != 0:
err_msg = os.strerror(errno_num)
if errno_num == errno.ENOENT:
err_msg += ': ' + repr(err_filename)
raise child_exception_type(errno_num, err_msg, err_filename)
raise child_exception_type(err_msg)
def _handle_exitstatus(self, sts, _WIFSIGNALED=os.WIFSIGNALED,
_WTERMSIG=os.WTERMSIG, _WIFEXITED=os.WIFEXITED,
_WEXITSTATUS=os.WEXITSTATUS, _WIFSTOPPED=os.WIFSTOPPED,
_WSTOPSIG=os.WSTOPSIG):
"""All callers to this function MUST hold self._waitpid_lock."""
# This method is called (indirectly) by __del__, so it cannot
# refer to anything outside of its local scope.
if _WIFSIGNALED(sts):
self.returncode = -_WTERMSIG(sts)
elif _WIFEXITED(sts):
self.returncode = _WEXITSTATUS(sts)
elif _WIFSTOPPED(sts):
self.returncode = -_WSTOPSIG(sts)
else:
# Should never happen
raise SubprocessError("Unknown child exit status!")
def _internal_poll(self, _deadstate=None, _waitpid=os.waitpid,
_WNOHANG=os.WNOHANG, _ECHILD=errno.ECHILD):
"""Check if child process has terminated. Returns returncode
attribute.
This method is called by __del__, so it cannot reference anything
outside of the local scope (nor can any methods it calls).
"""
if self.returncode is None:
if not self._waitpid_lock.acquire(False):
# Something else is busy calling waitpid. Don't allow two
# at once. We know nothing yet.
return None
try:
if self.returncode is not None:
return self.returncode # Another thread waited.
pid, sts = _waitpid(self.pid, _WNOHANG)
if pid == self.pid:
self._handle_exitstatus(sts)
except OSError as e:
if _deadstate is not None:
self.returncode = _deadstate
elif e.errno == _ECHILD:
# This happens if SIGCLD is set to be ignored or
# waiting for child processes has otherwise been
# disabled for our process. This child is dead, we
# can't get the status.
# http://bugs.python.org/issue15756
self.returncode = 0
finally:
self._waitpid_lock.release()
return self.returncode
def _try_wait(self, wait_flags):
"""All callers to this function MUST hold self._waitpid_lock."""
try:
(pid, sts) = os.waitpid(self.pid, wait_flags)
except ChildProcessError:
# This happens if SIGCLD is set to be ignored or waiting
# for child processes has otherwise been disabled for our
# process. This child is dead, we can't get the status.
pid = self.pid
sts = 0
return (pid, sts)
def wait(self, timeout=None, endtime=None):
"""Wait for child process to terminate. Returns returncode
attribute."""
if self.returncode is not None:
return self.returncode
if endtime is not None:
warnings.warn(
"'endtime' argument is deprecated; use 'timeout'.",
DeprecationWarning,
stacklevel=2)
if endtime is not None or timeout is not None:
if endtime is None:
endtime = _time() + timeout
elif timeout is None:
timeout = self._remaining_time(endtime)
if endtime is not None:
# Enter a busy loop if we have a timeout. This busy loop was
# cribbed from Lib/threading.py in Thread.wait() at r71065.
delay = 0.0005 # 500 us -> initial delay of 1 ms
while True:
if self._waitpid_lock.acquire(False):
try:
if self.returncode is not None:
break # Another thread waited.
(pid, sts) = self._try_wait(os.WNOHANG)
assert pid == self.pid or pid == 0
if pid == self.pid:
self._handle_exitstatus(sts)
break
finally:
self._waitpid_lock.release()
remaining = self._remaining_time(endtime)
if remaining <= 0:
raise TimeoutExpired(self.args, timeout)
delay = min(delay * 2, remaining, .05)
time.sleep(delay)
else:
while self.returncode is None:
with self._waitpid_lock:
if self.returncode is not None:
break # Another thread waited.
(pid, sts) = self._try_wait(0)
# Check the pid and loop as waitpid has been known to
# return 0 even without WNOHANG in odd situations.
# http://bugs.python.org/issue14396.
if pid == self.pid:
self._handle_exitstatus(sts)
return self.returncode
def _communicate(self, input, endtime, orig_timeout):
if self.stdin and not self._communication_started:
# Flush stdio buffer. This might block, if the user has
# been writing to .stdin in an uncontrolled fashion.
try:
self.stdin.flush()
except BrokenPipeError:
pass # communicate() must ignore BrokenPipeError.
if not input:
try:
self.stdin.close()
except BrokenPipeError:
pass # communicate() must ignore BrokenPipeError.
stdout = None
stderr = None
# Only create this mapping if we haven't already.
if not self._communication_started:
self._fileobj2output = {}
if self.stdout:
self._fileobj2output[self.stdout] = []
if self.stderr:
self._fileobj2output[self.stderr] = []
if self.stdout:
stdout = self._fileobj2output[self.stdout]
if self.stderr:
stderr = self._fileobj2output[self.stderr]
self._save_input(input)
if self._input:
input_view = memoryview(self._input)
with _PopenSelector() as selector:
if self.stdin and input:
selector.register(self.stdin, selectors.EVENT_WRITE)
if self.stdout:
selector.register(self.stdout, selectors.EVENT_READ)
if self.stderr:
selector.register(self.stderr, selectors.EVENT_READ)
while selector.get_map():
timeout = self._remaining_time(endtime)
if timeout is not None and timeout < 0:
raise TimeoutExpired(self.args, orig_timeout)
ready = selector.select(timeout)
self._check_timeout(endtime, orig_timeout)
# XXX Rewrite these to use non-blocking I/O on the file
# objects; they are no longer using C stdio!
for key, events in ready:
if key.fileobj is self.stdin:
chunk = input_view[self._input_offset :
self._input_offset + _PIPE_BUF]
try:
self._input_offset += os.write(key.fd, chunk)
except BrokenPipeError:
selector.unregister(key.fileobj)
key.fileobj.close()
else:
if self._input_offset >= len(self._input):
selector.unregister(key.fileobj)
key.fileobj.close()
elif key.fileobj in (self.stdout, self.stderr):
data = os.read(key.fd, 32768)
if not data:
selector.unregister(key.fileobj)
key.fileobj.close()
self._fileobj2output[key.fileobj].append(data)
self.wait(timeout=self._remaining_time(endtime))
# All data exchanged. Translate lists into strings.
if stdout is not None:
stdout = b''.join(stdout)
if stderr is not None:
stderr = b''.join(stderr)
# Translate newlines, if requested.
# This also turns bytes into strings.
if self.encoding or self.errors or self.universal_newlines:
if stdout is not None:
stdout = self._translate_newlines(stdout,
self.stdout.encoding,
self.stdout.errors)
if stderr is not None:
stderr = self._translate_newlines(stderr,
self.stderr.encoding,
self.stderr.errors)
return (stdout, stderr)
def _save_input(self, input):
# This method is called from the _communicate_with_*() methods
# so that if we time out while communicating, we can continue
# sending input if we retry.
if self.stdin and self._input is None:
self._input_offset = 0
self._input = input
if input is not None and (
self.encoding or self.errors or self.universal_newlines):
self._input = self._input.encode(self.stdin.encoding,
self.stdin.errors)
def send_signal(self, sig):
"""Send a signal to the process."""
# Skip signalling a process that we know has already died.
if self.returncode is None:
os.kill(self.pid, sig)
def terminate(self):
"""Terminate the process with SIGTERM
"""
self.send_signal(signal.SIGTERM)
def kill(self):
"""Kill the process with SIGKILL
"""
self.send_signal(signal.SIGKILL)
| 62,367 | 1,604 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/wave.py | """Stuff to parse WAVE files.
Usage.
Reading WAVE files:
f = wave.open(file, 'r')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods read(), seek(), and close().
When the setpos() and rewind() methods are not used, the seek()
method is not necessary.
This returns an instance of a class with the following public methods:
getnchannels() -- returns number of audio channels (1 for
mono, 2 for stereo)
getsampwidth() -- returns sample width in bytes
getframerate() -- returns sampling frequency
getnframes() -- returns number of audio frames
getcomptype() -- returns compression type ('NONE' for linear samples)
getcompname() -- returns human-readable version of
compression type ('not compressed' linear samples)
getparams() -- returns a namedtuple consisting of all of the
above in the above order
getmarkers() -- returns None (for compatibility with the
aifc module)
getmark(id) -- raises an error since the mark does not
exist (for compatibility with the aifc module)
readframes(n) -- returns at most n frames of audio
rewind() -- rewind to the beginning of the audio stream
setpos(pos) -- seek to the specified position
tell() -- return the current position
close() -- close the instance (make it unusable)
The position returned by tell() and the position given to setpos()
are compatible and have nothing to do with the actual position in the
file.
The close() method is called automatically when the class instance
is destroyed.
Writing WAVE files:
f = wave.open(file, 'w')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods write(), tell(), seek(), and
close().
This returns an instance of a class with the following public methods:
setnchannels(n) -- set the number of channels
setsampwidth(n) -- set the sample width
setframerate(n) -- set the frame rate
setnframes(n) -- set the number of frames
setcomptype(type, name)
-- set the compression type and the
human-readable compression type
setparams(tuple)
-- set all parameters at once
tell() -- return current position in output file
writeframesraw(data)
-- write audio frames without pathing up the
file header
writeframes(data)
-- write audio frames and patch up the file header
close() -- patch up the file header and close the
output file
You should set the parameters before the first writeframesraw or
writeframes. The total number of frames does not need to be set,
but when it is set to the correct value, the header does not have to
be patched up.
It is best to first set all parameters, perhaps possibly the
compression type, and then write audio frames using writeframesraw.
When all frames have been written, either call writeframes(b'') or
close() to patch up the sizes in the header.
The close() method is called automatically when the class instance
is destroyed.
"""
import builtins
__all__ = ["open", "openfp", "Error", "Wave_read", "Wave_write"]
class Error(Exception):
pass
WAVE_FORMAT_PCM = 0x0001
_array_fmts = None, 'b', 'h', None, 'i'
import audioop
import struct
import sys
from chunk import Chunk
from collections import namedtuple
_wave_params = namedtuple('_wave_params',
'nchannels sampwidth framerate nframes comptype compname')
class Wave_read:
"""Variables used in this class:
These variables are available to the user though appropriate
methods of this class:
_file -- the open file with methods read(), close(), and seek()
set through the __init__() method
_nchannels -- the number of audio channels
available through the getnchannels() method
_nframes -- the number of audio frames
available through the getnframes() method
_sampwidth -- the number of bytes per audio sample
available through the getsampwidth() method
_framerate -- the sampling frequency
available through the getframerate() method
_comptype -- the AIFF-C compression type ('NONE' if AIFF)
available through the getcomptype() method
_compname -- the human-readable AIFF-C compression type
available through the getcomptype() method
_soundpos -- the position in the audio stream
available through the tell() method, set through the
setpos() method
These variables are used internally only:
_fmt_chunk_read -- 1 iff the FMT chunk has been read
_data_seek_needed -- 1 iff positioned correctly in audio
file for readframes()
_data_chunk -- instantiation of a chunk class for the DATA chunk
_framesize -- size of one frame in the file
"""
def initfp(self, file):
self._convert = None
self._soundpos = 0
self._file = Chunk(file, bigendian = 0)
if self._file.getname() != b'RIFF':
raise Error('file does not start with RIFF id')
if self._file.read(4) != b'WAVE':
raise Error('not a WAVE file')
self._fmt_chunk_read = 0
self._data_chunk = None
while 1:
self._data_seek_needed = 1
try:
chunk = Chunk(self._file, bigendian = 0)
except EOFError:
break
chunkname = chunk.getname()
if chunkname == b'fmt ':
self._read_fmt_chunk(chunk)
self._fmt_chunk_read = 1
elif chunkname == b'data':
if not self._fmt_chunk_read:
raise Error('data chunk before fmt chunk')
self._data_chunk = chunk
self._nframes = chunk.chunksize // self._framesize
self._data_seek_needed = 0
break
chunk.skip()
if not self._fmt_chunk_read or not self._data_chunk:
raise Error('fmt chunk and/or data chunk missing')
def __init__(self, f):
self._i_opened_the_file = None
if isinstance(f, str):
f = builtins.open(f, 'rb')
self._i_opened_the_file = f
# else, assume it is an open file object already
try:
self.initfp(f)
except:
if self._i_opened_the_file:
f.close()
raise
def __del__(self):
self.close()
def __enter__(self):
return self
def __exit__(self, *args):
self.close()
#
# User visible methods.
#
def getfp(self):
return self._file
def rewind(self):
self._data_seek_needed = 1
self._soundpos = 0
def close(self):
self._file = None
file = self._i_opened_the_file
if file:
self._i_opened_the_file = None
file.close()
def tell(self):
return self._soundpos
def getnchannels(self):
return self._nchannels
def getnframes(self):
return self._nframes
def getsampwidth(self):
return self._sampwidth
def getframerate(self):
return self._framerate
def getcomptype(self):
return self._comptype
def getcompname(self):
return self._compname
def getparams(self):
return _wave_params(self.getnchannels(), self.getsampwidth(),
self.getframerate(), self.getnframes(),
self.getcomptype(), self.getcompname())
def getmarkers(self):
return None
def getmark(self, id):
raise Error('no marks')
def setpos(self, pos):
if pos < 0 or pos > self._nframes:
raise Error('position not in range')
self._soundpos = pos
self._data_seek_needed = 1
def readframes(self, nframes):
if self._data_seek_needed:
self._data_chunk.seek(0, 0)
pos = self._soundpos * self._framesize
if pos:
self._data_chunk.seek(pos, 0)
self._data_seek_needed = 0
if nframes == 0:
return b''
data = self._data_chunk.read(nframes * self._framesize)
if self._sampwidth != 1 and sys.byteorder == 'big':
data = audioop.byteswap(data, self._sampwidth)
if self._convert and data:
data = self._convert(data)
self._soundpos = self._soundpos + len(data) // (self._nchannels * self._sampwidth)
return data
#
# Internal methods.
#
def _read_fmt_chunk(self, chunk):
wFormatTag, self._nchannels, self._framerate, dwAvgBytesPerSec, wBlockAlign = struct.unpack_from('<HHLLH', chunk.read(14))
if wFormatTag == WAVE_FORMAT_PCM:
sampwidth = struct.unpack_from('<H', chunk.read(2))[0]
self._sampwidth = (sampwidth + 7) // 8
else:
raise Error('unknown format: %r' % (wFormatTag,))
self._framesize = self._nchannels * self._sampwidth
self._comptype = 'NONE'
self._compname = 'not compressed'
class Wave_write:
"""Variables used in this class:
These variables are user settable through appropriate methods
of this class:
_file -- the open file with methods write(), close(), tell(), seek()
set through the __init__() method
_comptype -- the AIFF-C compression type ('NONE' in AIFF)
set through the setcomptype() or setparams() method
_compname -- the human-readable AIFF-C compression type
set through the setcomptype() or setparams() method
_nchannels -- the number of audio channels
set through the setnchannels() or setparams() method
_sampwidth -- the number of bytes per audio sample
set through the setsampwidth() or setparams() method
_framerate -- the sampling frequency
set through the setframerate() or setparams() method
_nframes -- the number of audio frames written to the header
set through the setnframes() or setparams() method
These variables are used internally only:
_datalength -- the size of the audio samples written to the header
_nframeswritten -- the number of frames actually written
_datawritten -- the size of the audio samples actually written
"""
def __init__(self, f):
self._i_opened_the_file = None
if isinstance(f, str):
f = builtins.open(f, 'wb')
self._i_opened_the_file = f
try:
self.initfp(f)
except:
if self._i_opened_the_file:
f.close()
raise
def initfp(self, file):
self._file = file
self._convert = None
self._nchannels = 0
self._sampwidth = 0
self._framerate = 0
self._nframes = 0
self._nframeswritten = 0
self._datawritten = 0
self._datalength = 0
self._headerwritten = False
def __del__(self):
self.close()
def __enter__(self):
return self
def __exit__(self, *args):
self.close()
#
# User visible methods.
#
def setnchannels(self, nchannels):
if self._datawritten:
raise Error('cannot change parameters after starting to write')
if nchannels < 1:
raise Error('bad # of channels')
self._nchannels = nchannels
def getnchannels(self):
if not self._nchannels:
raise Error('number of channels not set')
return self._nchannels
def setsampwidth(self, sampwidth):
if self._datawritten:
raise Error('cannot change parameters after starting to write')
if sampwidth < 1 or sampwidth > 4:
raise Error('bad sample width')
self._sampwidth = sampwidth
def getsampwidth(self):
if not self._sampwidth:
raise Error('sample width not set')
return self._sampwidth
def setframerate(self, framerate):
if self._datawritten:
raise Error('cannot change parameters after starting to write')
if framerate <= 0:
raise Error('bad frame rate')
self._framerate = int(round(framerate))
def getframerate(self):
if not self._framerate:
raise Error('frame rate not set')
return self._framerate
def setnframes(self, nframes):
if self._datawritten:
raise Error('cannot change parameters after starting to write')
self._nframes = nframes
def getnframes(self):
return self._nframeswritten
def setcomptype(self, comptype, compname):
if self._datawritten:
raise Error('cannot change parameters after starting to write')
if comptype not in ('NONE',):
raise Error('unsupported compression type')
self._comptype = comptype
self._compname = compname
def getcomptype(self):
return self._comptype
def getcompname(self):
return self._compname
def setparams(self, params):
nchannels, sampwidth, framerate, nframes, comptype, compname = params
if self._datawritten:
raise Error('cannot change parameters after starting to write')
self.setnchannels(nchannels)
self.setsampwidth(sampwidth)
self.setframerate(framerate)
self.setnframes(nframes)
self.setcomptype(comptype, compname)
def getparams(self):
if not self._nchannels or not self._sampwidth or not self._framerate:
raise Error('not all parameters set')
return _wave_params(self._nchannels, self._sampwidth, self._framerate,
self._nframes, self._comptype, self._compname)
def setmark(self, id, pos, name):
raise Error('setmark() not supported')
def getmark(self, id):
raise Error('no marks')
def getmarkers(self):
return None
def tell(self):
return self._nframeswritten
def writeframesraw(self, data):
if not isinstance(data, (bytes, bytearray)):
data = memoryview(data).cast('B')
self._ensure_header_written(len(data))
nframes = len(data) // (self._sampwidth * self._nchannels)
if self._convert:
data = self._convert(data)
if self._sampwidth != 1 and sys.byteorder == 'big':
data = audioop.byteswap(data, self._sampwidth)
self._file.write(data)
self._datawritten += len(data)
self._nframeswritten = self._nframeswritten + nframes
def writeframes(self, data):
self.writeframesraw(data)
if self._datalength != self._datawritten:
self._patchheader()
def close(self):
try:
if self._file:
self._ensure_header_written(0)
if self._datalength != self._datawritten:
self._patchheader()
self._file.flush()
finally:
self._file = None
file = self._i_opened_the_file
if file:
self._i_opened_the_file = None
file.close()
#
# Internal methods.
#
def _ensure_header_written(self, datasize):
if not self._headerwritten:
if not self._nchannels:
raise Error('# channels not specified')
if not self._sampwidth:
raise Error('sample width not specified')
if not self._framerate:
raise Error('sampling rate not specified')
self._write_header(datasize)
def _write_header(self, initlength):
assert not self._headerwritten
self._file.write(b'RIFF')
if not self._nframes:
self._nframes = initlength // (self._nchannels * self._sampwidth)
self._datalength = self._nframes * self._nchannels * self._sampwidth
try:
self._form_length_pos = self._file.tell()
except (AttributeError, OSError):
self._form_length_pos = None
self._file.write(struct.pack('<L4s4sLHHLLHH4s',
36 + self._datalength, b'WAVE', b'fmt ', 16,
WAVE_FORMAT_PCM, self._nchannels, self._framerate,
self._nchannels * self._framerate * self._sampwidth,
self._nchannels * self._sampwidth,
self._sampwidth * 8, b'data'))
if self._form_length_pos is not None:
self._data_length_pos = self._file.tell()
self._file.write(struct.pack('<L', self._datalength))
self._headerwritten = True
def _patchheader(self):
assert self._headerwritten
if self._datawritten == self._datalength:
return
curpos = self._file.tell()
self._file.seek(self._form_length_pos, 0)
self._file.write(struct.pack('<L', 36 + self._datawritten))
self._file.seek(self._data_length_pos, 0)
self._file.write(struct.pack('<L', self._datawritten))
self._file.seek(curpos, 0)
self._datalength = self._datawritten
def open(f, mode=None):
if mode is None:
if hasattr(f, 'mode'):
mode = f.mode
else:
mode = 'rb'
if mode in ('r', 'rb'):
return Wave_read(f)
elif mode in ('w', 'wb'):
return Wave_write(f)
else:
raise Error("mode must be 'r', 'rb', 'w', or 'wb'")
openfp = open # B/W compatibility
| 17,709 | 506 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/contextlib.py | """Utilities for with-statement contexts. See PEP 343."""
import abc
import sys
import _collections_abc
from collections import deque
from functools import wraps
__all__ = ["contextmanager", "closing", "AbstractContextManager",
"ContextDecorator", "ExitStack", "redirect_stdout",
"redirect_stderr", "suppress"]
class AbstractContextManager(abc.ABC):
"""An abstract base class for context managers."""
def __enter__(self):
"""Return `self` upon entering the runtime context."""
return self
@abc.abstractmethod
def __exit__(self, exc_type, exc_value, traceback):
"""Raise any exception triggered within the runtime context."""
return None
@classmethod
def __subclasshook__(cls, C):
if cls is AbstractContextManager:
return _collections_abc._check_methods(C, "__enter__", "__exit__")
return NotImplemented
class ContextDecorator(object):
"A base class or mixin that enables context managers to work as decorators."
def _recreate_cm(self):
"""Return a recreated instance of self.
Allows an otherwise one-shot context manager like
_GeneratorContextManager to support use as
a decorator via implicit recreation.
This is a private interface just for _GeneratorContextManager.
See issue #11647 for details.
"""
return self
def __call__(self, func):
@wraps(func)
def inner(*args, **kwds):
with self._recreate_cm():
return func(*args, **kwds)
return inner
class _GeneratorContextManager(ContextDecorator, AbstractContextManager):
"""Helper for @contextmanager decorator."""
def __init__(self, func, args, kwds):
self.gen = func(*args, **kwds)
self.func, self.args, self.kwds = func, args, kwds
# Issue 19330: ensure context manager instances have good docstrings
doc = getattr(func, "__doc__", None)
if doc is None:
doc = type(self).__doc__
self.__doc__ = doc
# Unfortunately, this still doesn't provide good help output when
# inspecting the created context manager instances, since pydoc
# currently bypasses the instance docstring and shows the docstring
# for the class instead.
# See http://bugs.python.org/issue19404 for more details.
def _recreate_cm(self):
# _GCM instances are one-shot context managers, so the
# CM must be recreated each time a decorated function is
# called
return self.__class__(self.func, self.args, self.kwds)
def __enter__(self):
try:
return next(self.gen)
except StopIteration:
raise RuntimeError("generator didn't yield") from None
def __exit__(self, type, value, traceback):
if type is None:
try:
next(self.gen)
except StopIteration:
return False
else:
raise RuntimeError("generator didn't stop")
else:
if value is None:
# Need to force instantiation so we can reliably
# tell if we get the same exception back
value = type()
try:
self.gen.throw(type, value, traceback)
except StopIteration as exc:
# Suppress StopIteration *unless* it's the same exception that
# was passed to throw(). This prevents a StopIteration
# raised inside the "with" statement from being suppressed.
return exc is not value
except RuntimeError as exc:
# Don't re-raise the passed in exception. (issue27122)
if exc is value:
return False
# Likewise, avoid suppressing if a StopIteration exception
# was passed to throw() and later wrapped into a RuntimeError
# (see PEP 479).
if type is StopIteration and exc.__cause__ is value:
return False
raise
except:
# only re-raise if it's *not* the exception that was
# passed to throw(), because __exit__() must not raise
# an exception unless __exit__() itself failed. But throw()
# has to raise the exception to signal propagation, so this
# fixes the impedance mismatch between the throw() protocol
# and the __exit__() protocol.
#
if sys.exc_info()[1] is value:
return False
raise
raise RuntimeError("generator didn't stop after throw()")
def contextmanager(func):
"""@contextmanager decorator.
Typical usage:
@contextmanager
def some_generator(<arguments>):
<setup>
try:
yield <value>
finally:
<cleanup>
This makes this:
with some_generator(<arguments>) as <variable>:
<body>
equivalent to this:
<setup>
try:
<variable> = <value>
<body>
finally:
<cleanup>
"""
@wraps(func)
def helper(*args, **kwds):
return _GeneratorContextManager(func, args, kwds)
return helper
class closing(AbstractContextManager):
"""Context to automatically close something at the end of a block.
Code like this:
with closing(<module>.open(<arguments>)) as f:
<block>
is equivalent to this:
f = <module>.open(<arguments>)
try:
<block>
finally:
f.close()
"""
def __init__(self, thing):
self.thing = thing
def __enter__(self):
return self.thing
def __exit__(self, *exc_info):
self.thing.close()
class _RedirectStream(AbstractContextManager):
_stream = None
def __init__(self, new_target):
self._new_target = new_target
# We use a list of old targets to make this CM re-entrant
self._old_targets = []
def __enter__(self):
self._old_targets.append(getattr(sys, self._stream))
setattr(sys, self._stream, self._new_target)
return self._new_target
def __exit__(self, exctype, excinst, exctb):
setattr(sys, self._stream, self._old_targets.pop())
class redirect_stdout(_RedirectStream):
"""Context manager for temporarily redirecting stdout to another file.
# How to send help() to stderr
with redirect_stdout(sys.stderr):
help(dir)
# How to write help() to a file
with open('help.txt', 'w') as f:
with redirect_stdout(f):
help(pow)
"""
_stream = "stdout"
class redirect_stderr(_RedirectStream):
"""Context manager for temporarily redirecting stderr to another file."""
_stream = "stderr"
class suppress(AbstractContextManager):
"""Context manager to suppress specified exceptions
After the exception is suppressed, execution proceeds with the next
statement following the with statement.
with suppress(FileNotFoundError):
os.remove(somefile)
# Execution still resumes here if the file was already removed
"""
def __init__(self, *exceptions):
self._exceptions = exceptions
def __enter__(self):
pass
def __exit__(self, exctype, excinst, exctb):
# Unlike isinstance and issubclass, CPython exception handling
# currently only looks at the concrete type hierarchy (ignoring
# the instance and subclass checking hooks). While Guido considers
# that a bug rather than a feature, it's a fairly hard one to fix
# due to various internal implementation details. suppress provides
# the simpler issubclass based semantics, rather than trying to
# exactly reproduce the limitations of the CPython interpreter.
#
# See http://bugs.python.org/issue12029 for more details
return exctype is not None and issubclass(exctype, self._exceptions)
# Inspired by discussions on http://bugs.python.org/issue13585
class ExitStack(AbstractContextManager):
"""Context manager for dynamic management of a stack of exit callbacks
For example:
with ExitStack() as stack:
files = [stack.enter_context(open(fname)) for fname in filenames]
# All opened files will automatically be closed at the end of
# the with statement, even if attempts to open files later
# in the list raise an exception
"""
def __init__(self):
self._exit_callbacks = deque()
def pop_all(self):
"""Preserve the context stack by transferring it to a new instance"""
new_stack = type(self)()
new_stack._exit_callbacks = self._exit_callbacks
self._exit_callbacks = deque()
return new_stack
def _push_cm_exit(self, cm, cm_exit):
"""Helper to correctly register callbacks to __exit__ methods"""
def _exit_wrapper(*exc_details):
return cm_exit(cm, *exc_details)
_exit_wrapper.__self__ = cm
self.push(_exit_wrapper)
def push(self, exit):
"""Registers a callback with the standard __exit__ method signature
Can suppress exceptions the same way __exit__ methods can.
Also accepts any object with an __exit__ method (registering a call
to the method instead of the object itself)
"""
# We use an unbound method rather than a bound method to follow
# the standard lookup behaviour for special methods
_cb_type = type(exit)
try:
exit_method = _cb_type.__exit__
except AttributeError:
# Not a context manager, so assume its a callable
self._exit_callbacks.append(exit)
else:
self._push_cm_exit(exit, exit_method)
return exit # Allow use as a decorator
def callback(self, callback, *args, **kwds):
"""Registers an arbitrary callback and arguments.
Cannot suppress exceptions.
"""
def _exit_wrapper(exc_type, exc, tb):
callback(*args, **kwds)
# We changed the signature, so using @wraps is not appropriate, but
# setting __wrapped__ may still help with introspection
_exit_wrapper.__wrapped__ = callback
self.push(_exit_wrapper)
return callback # Allow use as a decorator
def enter_context(self, cm):
"""Enters the supplied context manager
If successful, also pushes its __exit__ method as a callback and
returns the result of the __enter__ method.
"""
# We look up the special methods on the type to match the with statement
_cm_type = type(cm)
_exit = _cm_type.__exit__
result = _cm_type.__enter__(cm)
self._push_cm_exit(cm, _exit)
return result
def close(self):
"""Immediately unwind the context stack"""
self.__exit__(None, None, None)
def __exit__(self, *exc_details):
received_exc = exc_details[0] is not None
# We manipulate the exception state so it behaves as though
# we were actually nesting multiple with statements
frame_exc = sys.exc_info()[1]
def _fix_exception_context(new_exc, old_exc):
# Context may not be correct, so find the end of the chain
while 1:
exc_context = new_exc.__context__
if exc_context is old_exc:
# Context is already set correctly (see issue 20317)
return
if exc_context is None or exc_context is frame_exc:
break
new_exc = exc_context
# Change the end of the chain to point to the exception
# we expect it to reference
new_exc.__context__ = old_exc
# Callbacks are invoked in LIFO order to match the behaviour of
# nested context managers
suppressed_exc = False
pending_raise = False
while self._exit_callbacks:
cb = self._exit_callbacks.pop()
try:
if cb(*exc_details):
suppressed_exc = True
pending_raise = False
exc_details = (None, None, None)
except:
new_exc_details = sys.exc_info()
# simulate the stack of exceptions by setting the context
_fix_exception_context(new_exc_details[1], exc_details[1])
pending_raise = True
exc_details = new_exc_details
if pending_raise:
try:
# bare "raise exc_details[1]" replaces our carefully
# set-up context
fixed_ctx = exc_details[1].__context__
raise exc_details[1]
except BaseException:
exc_details[1].__context__ = fixed_ctx
raise
return received_exc and suppressed_exc
| 13,162 | 385 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/calendar.py | """Calendar printing functions
Note when comparing these calendars to the ones printed by cal(1): By
default, these calendars have Monday as the first day of the week, and
Sunday as the last (the European convention). Use setfirstweekday() to
set the first day of the week (0=Monday, 6=Sunday)."""
import sys
import datetime
import locale as _locale
from itertools import repeat
__all__ = ["IllegalMonthError", "IllegalWeekdayError", "setfirstweekday",
"firstweekday", "isleap", "leapdays", "weekday", "monthrange",
"monthcalendar", "prmonth", "month", "prcal", "calendar",
"timegm", "month_name", "month_abbr", "day_name", "day_abbr",
"Calendar", "TextCalendar", "HTMLCalendar", "LocaleTextCalendar",
"LocaleHTMLCalendar", "weekheader"]
# Exception raised for bad input (with string parameter for details)
error = ValueError
# Exceptions raised for bad input
class IllegalMonthError(ValueError):
def __init__(self, month):
self.month = month
def __str__(self):
return "bad month number %r; must be 1-12" % self.month
class IllegalWeekdayError(ValueError):
def __init__(self, weekday):
self.weekday = weekday
def __str__(self):
return "bad weekday number %r; must be 0 (Monday) to 6 (Sunday)" % self.weekday
# Constants for months referenced later
January = 1
February = 2
# Number of days per month (except for February in leap years)
mdays = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
# This module used to have hard-coded lists of day and month names, as
# English strings. The classes following emulate a read-only version of
# that, but supply localized names. Note that the values are computed
# fresh on each call, in case the user changes locale between calls.
class _localized_month:
_months = [datetime.date(2001, i+1, 1).strftime for i in range(12)]
_months.insert(0, lambda x: "")
def __init__(self, format):
self.format = format
def __getitem__(self, i):
funcs = self._months[i]
if isinstance(i, slice):
return [f(self.format) for f in funcs]
else:
return funcs(self.format)
def __len__(self):
return 13
class _localized_day:
# January 1, 2001, was a Monday.
_days = [datetime.date(2001, 1, i+1).strftime for i in range(7)]
def __init__(self, format):
self.format = format
def __getitem__(self, i):
funcs = self._days[i]
if isinstance(i, slice):
return [f(self.format) for f in funcs]
else:
return funcs(self.format)
def __len__(self):
return 7
# Full and abbreviated names of weekdays
day_name = _localized_day('%A')
day_abbr = _localized_day('%a')
# Full and abbreviated names of months (1-based arrays!!!)
month_name = _localized_month('%B')
month_abbr = _localized_month('%b')
# Constants for weekdays
(MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY) = range(7)
def isleap(year):
"""Return True for leap years, False for non-leap years."""
return year % 4 == 0 and (year % 100 != 0 or year % 400 == 0)
def leapdays(y1, y2):
"""Return number of leap years in range [y1, y2).
Assume y1 <= y2."""
y1 -= 1
y2 -= 1
return (y2//4 - y1//4) - (y2//100 - y1//100) + (y2//400 - y1//400)
def weekday(year, month, day):
"""Return weekday (0-6 ~ Mon-Sun) for year (1970-...), month (1-12),
day (1-31)."""
return datetime.date(year, month, day).weekday()
def monthrange(year, month):
"""Return weekday (0-6 ~ Mon-Sun) and number of days (28-31) for
year, month."""
if not 1 <= month <= 12:
raise IllegalMonthError(month)
day1 = weekday(year, month, 1)
ndays = mdays[month] + (month == February and isleap(year))
return day1, ndays
class Calendar(object):
"""
Base calendar class. This class doesn't do any formatting. It simply
provides data to subclasses.
"""
def __init__(self, firstweekday=0):
self.firstweekday = firstweekday # 0 = Monday, 6 = Sunday
def getfirstweekday(self):
return self._firstweekday % 7
def setfirstweekday(self, firstweekday):
self._firstweekday = firstweekday
firstweekday = property(getfirstweekday, setfirstweekday)
def iterweekdays(self):
"""
Return an iterator for one week of weekday numbers starting with the
configured first one.
"""
for i in range(self.firstweekday, self.firstweekday + 7):
yield i%7
def itermonthdates(self, year, month):
"""
Return an iterator for one month. The iterator will yield datetime.date
values and will always iterate through complete weeks, so it will yield
dates outside the specified month.
"""
date = datetime.date(year, month, 1)
# Go back to the beginning of the week
days = (date.weekday() - self.firstweekday) % 7
date -= datetime.timedelta(days=days)
oneday = datetime.timedelta(days=1)
while True:
yield date
try:
date += oneday
except OverflowError:
# Adding one day could fail after datetime.MAXYEAR
break
if date.month != month and date.weekday() == self.firstweekday:
break
def itermonthdays2(self, year, month):
"""
Like itermonthdates(), but will yield (day number, weekday number)
tuples. For days outside the specified month the day number is 0.
"""
for i, d in enumerate(self.itermonthdays(year, month), self.firstweekday):
yield d, i % 7
def itermonthdays(self, year, month):
"""
Like itermonthdates(), but will yield day numbers. For days outside
the specified month the day number is 0.
"""
day1, ndays = monthrange(year, month)
days_before = (day1 - self.firstweekday) % 7
yield from repeat(0, days_before)
yield from range(1, ndays + 1)
days_after = (self.firstweekday - day1 - ndays) % 7
yield from repeat(0, days_after)
def monthdatescalendar(self, year, month):
"""
Return a matrix (list of lists) representing a month's calendar.
Each row represents a week; week entries are datetime.date values.
"""
dates = list(self.itermonthdates(year, month))
return [ dates[i:i+7] for i in range(0, len(dates), 7) ]
def monthdays2calendar(self, year, month):
"""
Return a matrix representing a month's calendar.
Each row represents a week; week entries are
(day number, weekday number) tuples. Day numbers outside this month
are zero.
"""
days = list(self.itermonthdays2(year, month))
return [ days[i:i+7] for i in range(0, len(days), 7) ]
def monthdayscalendar(self, year, month):
"""
Return a matrix representing a month's calendar.
Each row represents a week; days outside this month are zero.
"""
days = list(self.itermonthdays(year, month))
return [ days[i:i+7] for i in range(0, len(days), 7) ]
def yeardatescalendar(self, year, width=3):
"""
Return the data for the specified year ready for formatting. The return
value is a list of month rows. Each month row contains up to width months.
Each month contains between 4 and 6 weeks and each week contains 1-7
days. Days are datetime.date objects.
"""
months = [
self.monthdatescalendar(year, i)
for i in range(January, January+12)
]
return [months[i:i+width] for i in range(0, len(months), width) ]
def yeardays2calendar(self, year, width=3):
"""
Return the data for the specified year ready for formatting (similar to
yeardatescalendar()). Entries in the week lists are
(day number, weekday number) tuples. Day numbers outside this month are
zero.
"""
months = [
self.monthdays2calendar(year, i)
for i in range(January, January+12)
]
return [months[i:i+width] for i in range(0, len(months), width) ]
def yeardayscalendar(self, year, width=3):
"""
Return the data for the specified year ready for formatting (similar to
yeardatescalendar()). Entries in the week lists are day numbers.
Day numbers outside this month are zero.
"""
months = [
self.monthdayscalendar(year, i)
for i in range(January, January+12)
]
return [months[i:i+width] for i in range(0, len(months), width) ]
class TextCalendar(Calendar):
"""
Subclass of Calendar that outputs a calendar as a simple plain text
similar to the UNIX program cal.
"""
def prweek(self, theweek, width):
"""
Print a single week (no newline).
"""
print(self.formatweek(theweek, width), end=' ')
def formatday(self, day, weekday, width):
"""
Returns a formatted day.
"""
if day == 0:
s = ''
else:
s = '%2i' % day # right-align single-digit days
return s.center(width)
def formatweek(self, theweek, width):
"""
Returns a single week in a string (no newline).
"""
return ' '.join(self.formatday(d, wd, width) for (d, wd) in theweek)
def formatweekday(self, day, width):
"""
Returns a formatted week day name.
"""
if width >= 9:
names = day_name
else:
names = day_abbr
return names[day][:width].center(width)
def formatweekheader(self, width):
"""
Return a header for a week.
"""
return ' '.join(self.formatweekday(i, width) for i in self.iterweekdays())
def formatmonthname(self, theyear, themonth, width, withyear=True):
"""
Return a formatted month name.
"""
s = month_name[themonth]
if withyear:
s = "%s %r" % (s, theyear)
return s.center(width)
def prmonth(self, theyear, themonth, w=0, l=0):
"""
Print a month's calendar.
"""
print(self.formatmonth(theyear, themonth, w, l), end='')
def formatmonth(self, theyear, themonth, w=0, l=0):
"""
Return a month's calendar string (multi-line).
"""
w = max(2, w)
l = max(1, l)
s = self.formatmonthname(theyear, themonth, 7 * (w + 1) - 1)
s = s.rstrip()
s += '\n' * l
s += self.formatweekheader(w).rstrip()
s += '\n' * l
for week in self.monthdays2calendar(theyear, themonth):
s += self.formatweek(week, w).rstrip()
s += '\n' * l
return s
def formatyear(self, theyear, w=2, l=1, c=6, m=3):
"""
Returns a year's calendar as a multi-line string.
"""
w = max(2, w)
l = max(1, l)
c = max(2, c)
colwidth = (w + 1) * 7 - 1
v = []
a = v.append
a(repr(theyear).center(colwidth*m+c*(m-1)).rstrip())
a('\n'*l)
header = self.formatweekheader(w)
for (i, row) in enumerate(self.yeardays2calendar(theyear, m)):
# months in this row
months = range(m*i+1, min(m*(i+1)+1, 13))
a('\n'*l)
names = (self.formatmonthname(theyear, k, colwidth, False)
for k in months)
a(formatstring(names, colwidth, c).rstrip())
a('\n'*l)
headers = (header for k in months)
a(formatstring(headers, colwidth, c).rstrip())
a('\n'*l)
# max number of weeks for this row
height = max(len(cal) for cal in row)
for j in range(height):
weeks = []
for cal in row:
if j >= len(cal):
weeks.append('')
else:
weeks.append(self.formatweek(cal[j], w))
a(formatstring(weeks, colwidth, c).rstrip())
a('\n' * l)
return ''.join(v)
def pryear(self, theyear, w=0, l=0, c=6, m=3):
"""Print a year's calendar."""
print(self.formatyear(theyear, w, l, c, m))
class HTMLCalendar(Calendar):
"""
This calendar returns complete HTML pages.
"""
# CSS classes for the day <td>s
cssclasses = ["mon", "tue", "wed", "thu", "fri", "sat", "sun"]
def formatday(self, day, weekday):
"""
Return a day as a table cell.
"""
if day == 0:
return '<td class="noday"> </td>' # day outside month
else:
return '<td class="%s">%d</td>' % (self.cssclasses[weekday], day)
def formatweek(self, theweek):
"""
Return a complete week as a table row.
"""
s = ''.join(self.formatday(d, wd) for (d, wd) in theweek)
return '<tr>%s</tr>' % s
def formatweekday(self, day):
"""
Return a weekday name as a table header.
"""
return '<th class="%s">%s</th>' % (self.cssclasses[day], day_abbr[day])
def formatweekheader(self):
"""
Return a header for a week as a table row.
"""
s = ''.join(self.formatweekday(i) for i in self.iterweekdays())
return '<tr>%s</tr>' % s
def formatmonthname(self, theyear, themonth, withyear=True):
"""
Return a month name as a table row.
"""
if withyear:
s = '%s %s' % (month_name[themonth], theyear)
else:
s = '%s' % month_name[themonth]
return '<tr><th colspan="7" class="month">%s</th></tr>' % s
def formatmonth(self, theyear, themonth, withyear=True):
"""
Return a formatted month as a table.
"""
v = []
a = v.append
a('<table border="0" cellpadding="0" cellspacing="0" class="month">')
a('\n')
a(self.formatmonthname(theyear, themonth, withyear=withyear))
a('\n')
a(self.formatweekheader())
a('\n')
for week in self.monthdays2calendar(theyear, themonth):
a(self.formatweek(week))
a('\n')
a('</table>')
a('\n')
return ''.join(v)
def formatyear(self, theyear, width=3):
"""
Return a formatted year as a table of tables.
"""
v = []
a = v.append
width = max(width, 1)
a('<table border="0" cellpadding="0" cellspacing="0" class="year">')
a('\n')
a('<tr><th colspan="%d" class="year">%s</th></tr>' % (width, theyear))
for i in range(January, January+12, width):
# months in this row
months = range(i, min(i+width, 13))
a('<tr>')
for m in months:
a('<td>')
a(self.formatmonth(theyear, m, withyear=False))
a('</td>')
a('</tr>')
a('</table>')
return ''.join(v)
def formatyearpage(self, theyear, width=3, css='calendar.css', encoding=None):
"""
Return a formatted year as a complete HTML page.
"""
if encoding is None:
encoding = sys.getdefaultencoding()
v = []
a = v.append
a('<?xml version="1.0" encoding="%s"?>\n' % encoding)
a('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">\n')
a('<html>\n')
a('<head>\n')
a('<meta http-equiv="Content-Type" content="text/html; charset=%s" />\n' % encoding)
if css is not None:
a('<link rel="stylesheet" type="text/css" href="%s" />\n' % css)
a('<title>Calendar for %d</title>\n' % theyear)
a('</head>\n')
a('<body>\n')
a(self.formatyear(theyear, width))
a('</body>\n')
a('</html>\n')
return ''.join(v).encode(encoding, "xmlcharrefreplace")
class different_locale:
def __init__(self, locale):
self.locale = locale
def __enter__(self):
self.oldlocale = _locale.getlocale(_locale.LC_TIME)
_locale.setlocale(_locale.LC_TIME, self.locale)
def __exit__(self, *args):
_locale.setlocale(_locale.LC_TIME, self.oldlocale)
class LocaleTextCalendar(TextCalendar):
"""
This class can be passed a locale name in the constructor and will return
month and weekday names in the specified locale. If this locale includes
an encoding all strings containing month and weekday names will be returned
as unicode.
"""
def __init__(self, firstweekday=0, locale=None):
TextCalendar.__init__(self, firstweekday)
if locale is None:
locale = _locale.getdefaultlocale()
self.locale = locale
def formatweekday(self, day, width):
with different_locale(self.locale):
if width >= 9:
names = day_name
else:
names = day_abbr
name = names[day]
return name[:width].center(width)
def formatmonthname(self, theyear, themonth, width, withyear=True):
with different_locale(self.locale):
s = month_name[themonth]
if withyear:
s = "%s %r" % (s, theyear)
return s.center(width)
class LocaleHTMLCalendar(HTMLCalendar):
"""
This class can be passed a locale name in the constructor and will return
month and weekday names in the specified locale. If this locale includes
an encoding all strings containing month and weekday names will be returned
as unicode.
"""
def __init__(self, firstweekday=0, locale=None):
HTMLCalendar.__init__(self, firstweekday)
if locale is None:
locale = _locale.getdefaultlocale()
self.locale = locale
def formatweekday(self, day):
with different_locale(self.locale):
s = day_abbr[day]
return '<th class="%s">%s</th>' % (self.cssclasses[day], s)
def formatmonthname(self, theyear, themonth, withyear=True):
with different_locale(self.locale):
s = month_name[themonth]
if withyear:
s = '%s %s' % (s, theyear)
return '<tr><th colspan="7" class="month">%s</th></tr>' % s
# Support for old module level interface
c = TextCalendar()
firstweekday = c.getfirstweekday
def setfirstweekday(firstweekday):
if not MONDAY <= firstweekday <= SUNDAY:
raise IllegalWeekdayError(firstweekday)
c.firstweekday = firstweekday
monthcalendar = c.monthdayscalendar
prweek = c.prweek
week = c.formatweek
weekheader = c.formatweekheader
prmonth = c.prmonth
month = c.formatmonth
calendar = c.formatyear
prcal = c.pryear
# Spacing of month columns for multi-column year calendar
_colwidth = 7*3 - 1 # Amount printed by prweek()
_spacing = 6 # Number of spaces between columns
def format(cols, colwidth=_colwidth, spacing=_spacing):
"""Prints multi-column formatting for year calendars"""
print(formatstring(cols, colwidth, spacing))
def formatstring(cols, colwidth=_colwidth, spacing=_spacing):
"""Returns a string formatted from n strings, centered within n columns."""
spacing *= ' '
return spacing.join(c.center(colwidth) for c in cols)
EPOCH = 1970
_EPOCH_ORD = datetime.date(EPOCH, 1, 1).toordinal()
def timegm(tuple):
"""Unrelated but handy function to calculate Unix timestamp from GMT."""
year, month, day, hour, minute, second = tuple[:6]
days = datetime.date(year, month, 1).toordinal() - _EPOCH_ORD + day - 1
hours = days*24 + hour
minutes = hours*60 + minute
seconds = minutes*60 + second
return seconds
def main(args):
try:
import argparse
except ImportError:
print("error: argparse not yoinked", file=sys.stderr)
sys.exit(1)
parser = argparse.ArgumentParser()
textgroup = parser.add_argument_group('text only arguments')
htmlgroup = parser.add_argument_group('html only arguments')
textgroup.add_argument(
"-w", "--width",
type=int, default=2,
help="width of date column (default 2)"
)
textgroup.add_argument(
"-l", "--lines",
type=int, default=1,
help="number of lines for each week (default 1)"
)
textgroup.add_argument(
"-s", "--spacing",
type=int, default=6,
help="spacing between months (default 6)"
)
textgroup.add_argument(
"-m", "--months",
type=int, default=3,
help="months per row (default 3)"
)
htmlgroup.add_argument(
"-c", "--css",
default="calendar.css",
help="CSS to use for page"
)
parser.add_argument(
"-L", "--locale",
default=None,
help="locale to be used from month and weekday names"
)
parser.add_argument(
"-e", "--encoding",
default=None,
help="encoding to use for output"
)
parser.add_argument(
"-t", "--type",
default="text",
choices=("text", "html"),
help="output type (text or html)"
)
parser.add_argument(
"year",
nargs='?', type=int,
help="year number (1-9999)"
)
parser.add_argument(
"month",
nargs='?', type=int,
help="month number (1-12, text only)"
)
options = parser.parse_args(args[1:])
if options.locale and not options.encoding:
parser.error("if --locale is specified --encoding is required")
sys.exit(1)
locale = options.locale, options.encoding
if options.type == "html":
if options.locale:
cal = LocaleHTMLCalendar(locale=locale)
else:
cal = HTMLCalendar()
encoding = options.encoding
if encoding is None:
encoding = sys.getdefaultencoding()
optdict = dict(encoding=encoding, css=options.css)
write = sys.stdout.buffer.write
if options.year is None:
write(cal.formatyearpage(datetime.date.today().year, **optdict))
elif options.month is None:
write(cal.formatyearpage(options.year, **optdict))
else:
parser.error("incorrect number of arguments")
sys.exit(1)
else:
if options.locale:
cal = LocaleTextCalendar(locale=locale)
else:
cal = TextCalendar()
optdict = dict(w=options.width, l=options.lines)
if options.month is None:
optdict["c"] = options.spacing
optdict["m"] = options.months
if options.year is None:
result = cal.formatyear(datetime.date.today().year, **optdict)
elif options.month is None:
result = cal.formatyear(options.year, **optdict)
else:
result = cal.formatmonth(options.year, options.month, **optdict)
write = sys.stdout.write
if options.encoding:
result = result.encode(options.encoding)
write = sys.stdout.buffer.write
write(result)
if __name__ == "__main__":
main(sys.argv)
| 23,333 | 719 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/queue.py | '''A multi-producer, multi-consumer queue.'''
try:
import threading
except ImportError:
import dummy_threading as threading
from collections import deque
from heapq import heappush, heappop
from time import monotonic as time
__all__ = ['Empty', 'Full', 'Queue', 'PriorityQueue', 'LifoQueue']
class Empty(Exception):
'Exception raised by Queue.get(block=0)/get_nowait().'
pass
class Full(Exception):
'Exception raised by Queue.put(block=0)/put_nowait().'
pass
class Queue:
'''Create a queue object with a given maximum size.
If maxsize is <= 0, the queue size is infinite.
'''
def __init__(self, maxsize=0):
self.maxsize = maxsize
self._init(maxsize)
# mutex must be held whenever the queue is mutating. All methods
# that acquire mutex must release it before returning. mutex
# is shared between the three conditions, so acquiring and
# releasing the conditions also acquires and releases mutex.
self.mutex = threading.Lock()
# Notify not_empty whenever an item is added to the queue; a
# thread waiting to get is notified then.
self.not_empty = threading.Condition(self.mutex)
# Notify not_full whenever an item is removed from the queue;
# a thread waiting to put is notified then.
self.not_full = threading.Condition(self.mutex)
# Notify all_tasks_done whenever the number of unfinished tasks
# drops to zero; thread waiting to join() is notified to resume
self.all_tasks_done = threading.Condition(self.mutex)
self.unfinished_tasks = 0
def task_done(self):
'''Indicate that a formerly enqueued task is complete.
Used by Queue consumer threads. For each get() used to fetch a task,
a subsequent call to task_done() tells the queue that the processing
on the task is complete.
If a join() is currently blocking, it will resume when all items
have been processed (meaning that a task_done() call was received
for every item that had been put() into the queue).
Raises a ValueError if called more times than there were items
placed in the queue.
'''
with self.all_tasks_done:
unfinished = self.unfinished_tasks - 1
if unfinished <= 0:
if unfinished < 0:
raise ValueError('task_done() called too many times')
self.all_tasks_done.notify_all()
self.unfinished_tasks = unfinished
def join(self):
'''Blocks until all items in the Queue have been gotten and processed.
The count of unfinished tasks goes up whenever an item is added to the
queue. The count goes down whenever a consumer thread calls task_done()
to indicate the item was retrieved and all work on it is complete.
When the count of unfinished tasks drops to zero, join() unblocks.
'''
with self.all_tasks_done:
while self.unfinished_tasks:
self.all_tasks_done.wait()
def qsize(self):
'''Return the approximate size of the queue (not reliable!).'''
with self.mutex:
return self._qsize()
def empty(self):
'''Return True if the queue is empty, False otherwise (not reliable!).
This method is likely to be removed at some point. Use qsize() == 0
as a direct substitute, but be aware that either approach risks a race
condition where a queue can grow before the result of empty() or
qsize() can be used.
To create code that needs to wait for all queued tasks to be
completed, the preferred technique is to use the join() method.
'''
with self.mutex:
return not self._qsize()
def full(self):
'''Return True if the queue is full, False otherwise (not reliable!).
This method is likely to be removed at some point. Use qsize() >= n
as a direct substitute, but be aware that either approach risks a race
condition where a queue can shrink before the result of full() or
qsize() can be used.
'''
with self.mutex:
return 0 < self.maxsize <= self._qsize()
def put(self, item, block=True, timeout=None):
'''Put an item into the queue.
If optional args 'block' is true and 'timeout' is None (the default),
block if necessary until a free slot is available. If 'timeout' is
a non-negative number, it blocks at most 'timeout' seconds and raises
the Full exception if no free slot was available within that time.
Otherwise ('block' is false), put an item on the queue if a free slot
is immediately available, else raise the Full exception ('timeout'
is ignored in that case).
'''
with self.not_full:
if self.maxsize > 0:
if not block:
if self._qsize() >= self.maxsize:
raise Full
elif timeout is None:
while self._qsize() >= self.maxsize:
self.not_full.wait()
elif timeout < 0:
raise ValueError("'timeout' must be a non-negative number")
else:
endtime = time() + timeout
while self._qsize() >= self.maxsize:
remaining = endtime - time()
if remaining <= 0.0:
raise Full
self.not_full.wait(remaining)
self._put(item)
self.unfinished_tasks += 1
self.not_empty.notify()
def get(self, block=True, timeout=None):
'''Remove and return an item from the queue.
If optional args 'block' is true and 'timeout' is None (the default),
block if necessary until an item is available. If 'timeout' is
a non-negative number, it blocks at most 'timeout' seconds and raises
the Empty exception if no item was available within that time.
Otherwise ('block' is false), return an item if one is immediately
available, else raise the Empty exception ('timeout' is ignored
in that case).
'''
with self.not_empty:
if not block:
if not self._qsize():
raise Empty
elif timeout is None:
while not self._qsize():
self.not_empty.wait()
elif timeout < 0:
raise ValueError("'timeout' must be a non-negative number")
else:
endtime = time() + timeout
while not self._qsize():
remaining = endtime - time()
if remaining <= 0.0:
raise Empty
self.not_empty.wait(remaining)
item = self._get()
self.not_full.notify()
return item
def put_nowait(self, item):
'''Put an item into the queue without blocking.
Only enqueue the item if a free slot is immediately available.
Otherwise raise the Full exception.
'''
return self.put(item, block=False)
def get_nowait(self):
'''Remove and return an item from the queue without blocking.
Only get an item if one is immediately available. Otherwise
raise the Empty exception.
'''
return self.get(block=False)
# Override these methods to implement other queue organizations
# (e.g. stack or priority queue).
# These will only be called with appropriate locks held
# Initialize the queue representation
def _init(self, maxsize):
self.queue = deque()
def _qsize(self):
return len(self.queue)
# Put a new item in the queue
def _put(self, item):
self.queue.append(item)
# Get an item from the queue
def _get(self):
return self.queue.popleft()
class PriorityQueue(Queue):
'''Variant of Queue that retrieves open entries in priority order (lowest first).
Entries are typically tuples of the form: (priority number, data).
'''
def _init(self, maxsize):
self.queue = []
def _qsize(self):
return len(self.queue)
def _put(self, item):
heappush(self.queue, item)
def _get(self):
return heappop(self.queue)
class LifoQueue(Queue):
'''Variant of Queue that retrieves most recently added entries first.'''
def _init(self, maxsize):
self.queue = []
def _qsize(self):
return len(self.queue)
def _put(self, item):
self.queue.append(item)
def _get(self):
return self.queue.pop()
| 8,780 | 247 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/fileinput.py | """Helper class to quickly write a loop over all standard input files.
Typical use is:
import fileinput
for line in fileinput.input():
process(line)
This iterates over the lines of all files listed in sys.argv[1:],
defaulting to sys.stdin if the list is empty. If a filename is '-' it
is also replaced by sys.stdin. To specify an alternative list of
filenames, pass it as the argument to input(). A single file name is
also allowed.
Functions filename(), lineno() return the filename and cumulative line
number of the line that has just been read; filelineno() returns its
line number in the current file; isfirstline() returns true iff the
line just read is the first line of its file; isstdin() returns true
iff the line was read from sys.stdin. Function nextfile() closes the
current file so that the next iteration will read the first line from
the next file (if any); lines not read from the file will not count
towards the cumulative line count; the filename is not changed until
after the first line of the next file has been read. Function close()
closes the sequence.
Before any lines have been read, filename() returns None and both line
numbers are zero; nextfile() has no effect. After all lines have been
read, filename() and the line number functions return the values
pertaining to the last line read; nextfile() has no effect.
All files are opened in text mode by default, you can override this by
setting the mode parameter to input() or FileInput.__init__().
If an I/O error occurs during opening or reading a file, the OSError
exception is raised.
If sys.stdin is used more than once, the second and further use will
return no lines, except perhaps for interactive use, or if it has been
explicitly reset (e.g. using sys.stdin.seek(0)).
Empty files are opened and immediately closed; the only time their
presence in the list of filenames is noticeable at all is when the
last file opened is empty.
It is possible that the last line of a file doesn't end in a newline
character; otherwise lines are returned including the trailing
newline.
Class FileInput is the implementation; its methods filename(),
lineno(), fileline(), isfirstline(), isstdin(), nextfile() and close()
correspond to the functions in the module. In addition it has a
readline() method which returns the next input line, and a
__getitem__() method which implements the sequence behavior. The
sequence must be accessed in strictly sequential order; sequence
access and readline() cannot be mixed.
Optional in-place filtering: if the keyword argument inplace=1 is
passed to input() or to the FileInput constructor, the file is moved
to a backup file and standard output is directed to the input file.
This makes it possible to write a filter that rewrites its input file
in place. If the keyword argument backup=".<some extension>" is also
given, it specifies the extension for the backup file, and the backup
file remains around; by default, the extension is ".bak" and it is
deleted when the output file is closed. In-place filtering is
disabled when standard input is read. XXX The current implementation
does not work for MS-DOS 8+3 filesystems.
XXX Possible additions:
- optional getopt argument processing
- isatty()
- read(), read(size), even readlines()
"""
import sys, os
__all__ = ["input", "close", "nextfile", "filename", "lineno", "filelineno",
"fileno", "isfirstline", "isstdin", "FileInput", "hook_compressed",
"hook_encoded"]
_state = None
def input(files=None, inplace=False, backup="", bufsize=0,
mode="r", openhook=None):
"""Return an instance of the FileInput class, which can be iterated.
The parameters are passed to the constructor of the FileInput class.
The returned instance, in addition to being an iterator,
keeps global state for the functions of this module,.
"""
global _state
if _state and _state._file:
raise RuntimeError("input() already active")
_state = FileInput(files, inplace, backup, bufsize, mode, openhook)
return _state
def close():
"""Close the sequence."""
global _state
state = _state
_state = None
if state:
state.close()
def nextfile():
"""
Close the current file so that the next iteration will read the first
line from the next file (if any); lines not read from the file will
not count towards the cumulative line count. The filename is not
changed until after the first line of the next file has been read.
Before the first line has been read, this function has no effect;
it cannot be used to skip the first file. After the last line of the
last file has been read, this function has no effect.
"""
if not _state:
raise RuntimeError("no active input()")
return _state.nextfile()
def filename():
"""
Return the name of the file currently being read.
Before the first line has been read, returns None.
"""
if not _state:
raise RuntimeError("no active input()")
return _state.filename()
def lineno():
"""
Return the cumulative line number of the line that has just been read.
Before the first line has been read, returns 0. After the last line
of the last file has been read, returns the line number of that line.
"""
if not _state:
raise RuntimeError("no active input()")
return _state.lineno()
def filelineno():
"""
Return the line number in the current file. Before the first line
has been read, returns 0. After the last line of the last file has
been read, returns the line number of that line within the file.
"""
if not _state:
raise RuntimeError("no active input()")
return _state.filelineno()
def fileno():
"""
Return the file number of the current file. When no file is currently
opened, returns -1.
"""
if not _state:
raise RuntimeError("no active input()")
return _state.fileno()
def isfirstline():
"""
Returns true the line just read is the first line of its file,
otherwise returns false.
"""
if not _state:
raise RuntimeError("no active input()")
return _state.isfirstline()
def isstdin():
"""
Returns true if the last line was read from sys.stdin,
otherwise returns false.
"""
if not _state:
raise RuntimeError("no active input()")
return _state.isstdin()
class FileInput:
"""FileInput([files[, inplace[, backup[, bufsize, [, mode[, openhook]]]]]])
Class FileInput is the implementation of the module; its methods
filename(), lineno(), fileline(), isfirstline(), isstdin(), fileno(),
nextfile() and close() correspond to the functions of the same name
in the module.
In addition it has a readline() method which returns the next
input line, and a __getitem__() method which implements the
sequence behavior. The sequence must be accessed in strictly
sequential order; random access and readline() cannot be mixed.
"""
def __init__(self, files=None, inplace=False, backup="", bufsize=0,
mode="r", openhook=None):
if isinstance(files, str):
files = (files,)
else:
if files is None:
files = sys.argv[1:]
if not files:
files = ('-',)
else:
files = tuple(files)
self._files = files
self._inplace = inplace
self._backup = backup
if bufsize:
import warnings
warnings.warn('bufsize is deprecated and ignored',
DeprecationWarning, stacklevel=2)
self._savestdout = None
self._output = None
self._filename = None
self._startlineno = 0
self._filelineno = 0
self._file = None
self._isstdin = False
self._backupfilename = None
# restrict mode argument to reading modes
if mode not in ('r', 'rU', 'U', 'rb'):
raise ValueError("FileInput opening mode must be one of "
"'r', 'rU', 'U' and 'rb'")
if 'U' in mode:
import warnings
warnings.warn("'U' mode is deprecated",
DeprecationWarning, 2)
self._mode = mode
if openhook:
if inplace:
raise ValueError("FileInput cannot use an opening hook in inplace mode")
if not callable(openhook):
raise ValueError("FileInput openhook must be callable")
self._openhook = openhook
def __del__(self):
self.close()
def close(self):
try:
self.nextfile()
finally:
self._files = ()
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
self.close()
def __iter__(self):
return self
def __next__(self):
while True:
line = self._readline()
if line:
self._filelineno += 1
return line
if not self._file:
raise StopIteration
self.nextfile()
# repeat with next file
def __getitem__(self, i):
if i != self.lineno():
raise RuntimeError("accessing lines out of order")
try:
return self.__next__()
except StopIteration:
raise IndexError("end of input reached")
def nextfile(self):
savestdout = self._savestdout
self._savestdout = None
if savestdout:
sys.stdout = savestdout
output = self._output
self._output = None
try:
if output:
output.close()
finally:
file = self._file
self._file = None
try:
del self._readline # restore FileInput._readline
except AttributeError:
pass
try:
if file and not self._isstdin:
file.close()
finally:
backupfilename = self._backupfilename
self._backupfilename = None
if backupfilename and not self._backup:
try: os.unlink(backupfilename)
except OSError: pass
self._isstdin = False
def readline(self):
while True:
line = self._readline()
if line:
self._filelineno += 1
return line
if not self._file:
return line
self.nextfile()
# repeat with next file
def _readline(self):
if not self._files:
if 'b' in self._mode:
return b''
else:
return ''
self._filename = self._files[0]
self._files = self._files[1:]
self._startlineno = self.lineno()
self._filelineno = 0
self._file = None
self._isstdin = False
self._backupfilename = 0
if self._filename == '-':
self._filename = '<stdin>'
if 'b' in self._mode:
self._file = getattr(sys.stdin, 'buffer', sys.stdin)
else:
self._file = sys.stdin
self._isstdin = True
else:
if self._inplace:
self._backupfilename = (
self._filename + (self._backup or ".bak"))
try:
os.unlink(self._backupfilename)
except OSError:
pass
# The next few lines may raise OSError
os.rename(self._filename, self._backupfilename)
self._file = open(self._backupfilename, self._mode)
try:
perm = os.fstat(self._file.fileno()).st_mode
except OSError:
self._output = open(self._filename, "w")
else:
mode = os.O_CREAT | os.O_WRONLY | os.O_TRUNC
if hasattr(os, 'O_BINARY'):
mode |= os.O_BINARY
fd = os.open(self._filename, mode, perm)
self._output = os.fdopen(fd, "w")
try:
if hasattr(os, 'chmod'):
os.chmod(self._filename, perm)
except OSError:
pass
self._savestdout = sys.stdout
sys.stdout = self._output
else:
# This may raise OSError
if self._openhook:
self._file = self._openhook(self._filename, self._mode)
else:
self._file = open(self._filename, self._mode)
self._readline = self._file.readline # hide FileInput._readline
return self._readline()
def filename(self):
return self._filename
def lineno(self):
return self._startlineno + self._filelineno
def filelineno(self):
return self._filelineno
def fileno(self):
if self._file:
try:
return self._file.fileno()
except ValueError:
return -1
else:
return -1
def isfirstline(self):
return self._filelineno == 1
def isstdin(self):
return self._isstdin
def hook_compressed(filename, mode):
ext = os.path.splitext(filename)[1]
if ext == '.gz':
import gzip
return gzip.open(filename, mode)
elif ext == '.bz2':
import bz2
return bz2.BZ2File(filename, mode)
else:
return open(filename, mode)
def hook_encoded(encoding, errors=None):
def openhook(filename, mode):
return open(filename, mode, encoding=encoding, errors=errors)
return openhook
def _test():
import getopt
inplace = False
backup = False
opts, args = getopt.getopt(sys.argv[1:], "ib:")
for o, a in opts:
if o == '-i': inplace = True
if o == '-b': backup = a
for line in input(args, inplace=inplace, backup=backup):
if line[-1:] == '\n': line = line[:-1]
if line[-1:] == '\r': line = line[:-1]
print("%d: %s[%d]%s %s" % (lineno(), filename(), filelineno(),
isfirstline() and "*" or "", line))
print("%d: %s[%d]" % (lineno(), filename(), filelineno()))
if __name__ == '__main__':
_test()
| 14,471 | 426 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/code.py | """Utilities needed to emulate Python's interactive interpreter.
"""
# Inspired by similar code by Jeff Epler and Fredrik Lundh.
import sys
import traceback
import argparse
from codeop import CommandCompiler, compile_command
__all__ = ["InteractiveInterpreter", "InteractiveConsole", "interact",
"compile_command"]
class InteractiveInterpreter:
"""Base class for InteractiveConsole.
This class deals with parsing and interpreter state (the user's
namespace); it doesn't deal with input buffering or prompting or
input file naming (the filename is always passed in explicitly).
"""
def __init__(self, locals=None):
"""Constructor.
The optional 'locals' argument specifies the dictionary in
which code will be executed; it defaults to a newly created
dictionary with key "__name__" set to "__console__" and key
"__doc__" set to None.
"""
if locals is None:
locals = {"__name__": "__console__", "__doc__": None}
self.locals = locals
self.compile = CommandCompiler()
def runsource(self, source, filename="<input>", symbol="single"):
"""Compile and run some source in the interpreter.
Arguments are as for compile_command().
One several things can happen:
1) The input is incorrect; compile_command() raised an
exception (SyntaxError or OverflowError). A syntax traceback
will be printed by calling the showsyntaxerror() method.
2) The input is incomplete, and more input is required;
compile_command() returned None. Nothing happens.
3) The input is complete; compile_command() returned a code
object. The code is executed by calling self.runcode() (which
also handles run-time exceptions, except for SystemExit).
The return value is True in case 2, False in the other cases (unless
an exception is raised). The return value can be used to
decide whether to use sys.ps1 or sys.ps2 to prompt the next
line.
"""
try:
code = self.compile(source, filename, symbol)
except (OverflowError, SyntaxError, ValueError):
# Case 1
self.showsyntaxerror(filename)
return False
if code is None:
# Case 2
return True
# Case 3
self.runcode(code)
return False
def runcode(self, code):
"""Execute a code object.
When an exception occurs, self.showtraceback() is called to
display a traceback. All exceptions are caught except
SystemExit, which is reraised.
A note about KeyboardInterrupt: this exception may occur
elsewhere in this code, and may not always be caught. The
caller should be prepared to deal with it.
"""
try:
exec(code, self.locals)
except SystemExit:
raise
except:
self.showtraceback()
def showsyntaxerror(self, filename=None):
"""Display the syntax error that just occurred.
This doesn't display a stack trace because there isn't one.
If a filename is given, it is stuffed in the exception instead
of what was there before (because Python's parser always uses
"<string>" when reading from a string).
The output is written by self.write(), below.
"""
type, value, tb = sys.exc_info()
sys.last_type = type
sys.last_value = value
sys.last_traceback = tb
if filename and type is SyntaxError:
# Work hard to stuff the correct filename in the exception
try:
msg, (dummy_filename, lineno, offset, line) = value.args
except ValueError:
# Not the format we expect; leave it alone
pass
else:
# Stuff in the right filename
value = SyntaxError(msg, (filename, lineno, offset, line))
sys.last_value = value
if sys.excepthook is sys.__excepthook__:
lines = traceback.format_exception_only(type, value)
self.write(''.join(lines))
else:
# If someone has set sys.excepthook, we let that take precedence
# over self.write
sys.excepthook(type, value, tb)
def showtraceback(self):
"""Display the exception that just occurred.
We remove the first stack item because it is our own code.
The output is written by self.write(), below.
"""
sys.last_type, sys.last_value, last_tb = ei = sys.exc_info()
sys.last_traceback = last_tb
try:
lines = traceback.format_exception(ei[0], ei[1], last_tb.tb_next)
if sys.excepthook is sys.__excepthook__:
self.write(''.join(lines))
else:
# If someone has set sys.excepthook, we let that take precedence
# over self.write
sys.excepthook(ei[0], ei[1], last_tb)
finally:
last_tb = ei = None
def write(self, data):
"""Write a string.
The base implementation writes to sys.stderr; a subclass may
replace this with a different implementation.
"""
sys.stderr.write(data)
class InteractiveConsole(InteractiveInterpreter):
"""Closely emulate the behavior of the interactive Python interpreter.
This class builds on InteractiveInterpreter and adds prompting
using the familiar sys.ps1 and sys.ps2, and input buffering.
"""
def __init__(self, locals=None, filename="<console>"):
"""Constructor.
The optional locals argument will be passed to the
InteractiveInterpreter base class.
The optional filename argument should specify the (file)name
of the input stream; it will show up in tracebacks.
"""
InteractiveInterpreter.__init__(self, locals)
self.filename = filename
self.resetbuffer()
def resetbuffer(self):
"""Reset the input buffer."""
self.buffer = []
def interact(self, banner=None, exitmsg=None):
"""Closely emulate the interactive Python console.
The optional banner argument specifies the banner to print
before the first interaction; by default it prints a banner
similar to the one printed by the real Python interpreter,
followed by the current class name in parentheses (so as not
to confuse this with the real interpreter -- since it's so
close!).
The optional exitmsg argument specifies the exit message
printed when exiting. Pass the empty string to suppress
printing an exit message. If exitmsg is not given or None,
a default message is printed.
"""
try:
sys.ps1
except AttributeError:
sys.ps1 = ">>> "
try:
sys.ps2
except AttributeError:
sys.ps2 = "... "
cprt = 'Type "help", "copyright", "credits" or "license" for more information.'
if banner is None:
self.write("Python %s on %s\n%s\n(%s)\n" %
(sys.version, sys.platform, cprt,
self.__class__.__name__))
elif banner:
self.write("%s\n" % str(banner))
more = 0
while 1:
try:
if more:
prompt = sys.ps2
else:
prompt = sys.ps1
try:
line = self.raw_input(prompt)
except EOFError:
self.write("\n")
break
else:
more = self.push(line)
except KeyboardInterrupt:
self.write("\nKeyboardInterrupt\n")
self.resetbuffer()
more = 0
if exitmsg is None:
self.write('now exiting %s...\n' % self.__class__.__name__)
elif exitmsg != '':
self.write('%s\n' % exitmsg)
def push(self, line):
"""Push a line to the interpreter.
The line should not have a trailing newline; it may have
internal newlines. The line is appended to a buffer and the
interpreter's runsource() method is called with the
concatenated contents of the buffer as source. If this
indicates that the command was executed or invalid, the buffer
is reset; otherwise, the command is incomplete, and the buffer
is left as it was after the line was appended. The return
value is 1 if more input is required, 0 if the line was dealt
with in some way (this is the same as runsource()).
"""
self.buffer.append(line)
source = "\n".join(self.buffer)
more = self.runsource(source, self.filename)
if not more:
self.resetbuffer()
return more
def raw_input(self, prompt=""):
"""Write a prompt and read a line.
The returned line does not include the trailing newline.
When the user enters the EOF key sequence, EOFError is raised.
The base implementation uses the built-in function
input(); a subclass may replace this with a different
implementation.
"""
return input(prompt)
def interact(banner=None, readfunc=None, local=None, exitmsg=None):
"""Closely emulate the interactive Python interpreter.
This is a backwards compatible interface to the InteractiveConsole
class. When readfunc is not specified, it attempts to import the
readline module to enable GNU readline if it is available.
Arguments (all optional, all default to None):
banner -- passed to InteractiveConsole.interact()
readfunc -- if not None, replaces InteractiveConsole.raw_input()
local -- passed to InteractiveInterpreter.__init__()
exitmsg -- passed to InteractiveConsole.interact()
"""
console = InteractiveConsole(local)
if readfunc is not None:
console.raw_input = readfunc
else:
try:
import readline
except ImportError:
pass
console.interact(banner, exitmsg)
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument('-q', action='store_true',
help="don't print version and copyright messages")
args = parser.parse_args()
if args.q or sys.flags.quiet:
banner = ''
else:
banner = None
interact(banner)
| 10,614 | 315 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/struct.py | __all__ = [
# Functions
'calcsize', 'pack', 'pack_into', 'unpack', 'unpack_from',
'iter_unpack',
# Classes
'Struct',
# Exceptions
'error'
]
from _struct import Struct, calcsize, error, iter_unpack, pack, pack_into, unpack, unpack_from
from _struct import _clearcache
try:
from _struct import __doc__
except ImportError:
pass
| 364 | 19 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/genericpath.py | """
Path operations common to more than one OS
Do not use directly. The OS specific modules import the appropriate
functions from this module themselves.
"""
import os
import stat
__all__ = ['commonprefix', 'exists', 'getatime', 'getctime', 'getmtime',
'getsize', 'isdir', 'isfile', 'samefile', 'sameopenfile',
'samestat']
# Does a path exist?
# This is false for dangling symbolic links on systems that support them.
def exists(path):
"""Test whether a path exists. Returns False for broken symbolic links"""
try:
os.stat(path)
except OSError:
return False
return True
# This follows symbolic links, so both islink() and isdir() can be true
# for the same path on systems that support symlinks
def isfile(path):
"""Test whether a path is a regular file"""
try:
st = os.stat(path)
except OSError:
return False
return stat.S_ISREG(st.st_mode)
# Is a path a directory?
# This follows symbolic links, so both islink() and isdir()
# can be true for the same path on systems that support symlinks
def isdir(s):
"""Return true if the pathname refers to an existing directory."""
try:
st = os.stat(s)
except OSError:
return False
return stat.S_ISDIR(st.st_mode)
def getsize(filename):
"""Return the size of a file, reported by os.stat()."""
return os.stat(filename).st_size
def getmtime(filename):
"""Return the last modification time of a file, reported by os.stat()."""
return os.stat(filename).st_mtime
def getatime(filename):
"""Return the last access time of a file, reported by os.stat()."""
return os.stat(filename).st_atime
def getctime(filename):
"""Return the metadata change time of a file, reported by os.stat()."""
return os.stat(filename).st_ctime
# Return the longest prefix of all list elements.
def commonprefix(m):
"Given a list of pathnames, returns the longest common leading component"
if not m: return ''
# Some people pass in a list of pathname parts to operate in an OS-agnostic
# fashion; don't try to translate in that case as that's an abuse of the
# API and they are already doing what they need to be OS-agnostic and so
# they most likely won't be using an os.PathLike object in the sublists.
if not isinstance(m[0], (list, tuple)):
m = tuple(map(os.fspath, m))
s1 = min(m)
s2 = max(m)
for i, c in enumerate(s1):
if c != s2[i]:
return s1[:i]
return s1
# Are two stat buffers (obtained from stat, fstat or lstat)
# describing the same file?
def samestat(s1, s2):
"""Test whether two stat buffers reference the same file"""
return (s1.st_ino == s2.st_ino and
s1.st_dev == s2.st_dev)
# Are two filenames really pointing to the same file?
def samefile(f1, f2):
"""Test whether two pathnames reference the same actual file"""
s1 = os.stat(f1)
s2 = os.stat(f2)
return samestat(s1, s2)
# Are two open files really referencing the same file?
# (Not necessarily the same file descriptor!)
def sameopenfile(fp1, fp2):
"""Test whether two open file objects reference the same file"""
s1 = os.fstat(fp1)
s2 = os.fstat(fp2)
return samestat(s1, s2)
# Split a path in root and extension.
# The extension is everything starting at the last dot in the last
# pathname component; the root is everything before that.
# It is always true that root + ext == p.
# Generic implementation of splitext, to be parametrized with
# the separators
def _splitext(p, sep, altsep, extsep):
"""Split the extension from a pathname.
Extension is everything from the last dot to the end, ignoring
leading dots. Returns "(root, ext)"; ext may be empty."""
# NOTE: This code must work for text and bytes strings.
sepIndex = p.rfind(sep)
if altsep:
altsepIndex = p.rfind(altsep)
sepIndex = max(sepIndex, altsepIndex)
dotIndex = p.rfind(extsep)
if dotIndex > sepIndex:
# skip all leading dots
filenameIndex = sepIndex + 1
while filenameIndex < dotIndex:
if p[filenameIndex:filenameIndex+1] != extsep:
return p[:dotIndex], p[dotIndex:]
filenameIndex += 1
return p, p[:0]
def _check_arg_types(funcname, *args):
hasstr = hasbytes = False
for s in args:
if isinstance(s, str):
hasstr = True
elif isinstance(s, bytes):
hasbytes = True
else:
raise TypeError('%s() argument must be str or bytes, not %r' %
(funcname, s.__class__.__name__)) from None
if hasstr and hasbytes:
raise TypeError("Can't mix strings and bytes in path components") from None
| 4,756 | 152 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/antigravity.py |
import webbrowser
import hashlib
webbrowser.open("https://xkcd.com/353/")
def geohash(latitude, longitude, datedow):
'''Compute geohash() using the Munroe algorithm.
>>> geohash(37.421542, -122.085589, b'2005-05-26-10458.68')
37.857713 -122.544543
'''
# https://xkcd.com/426/
h = hashlib.md5(datedow).hexdigest()
p, q = [('%f' % float.fromhex('0.' + x)) for x in (h[:16], h[16:32])]
print('%d%s %d%s' % (latitude, p[1:], longitude, q[1:]))
| 477 | 18 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/typing.py | import abc
from abc import abstractmethod, abstractproperty
import collections
import contextlib
import functools
import re as stdlib_re # Avoid confusion with the re we export.
import sys
import types
try:
import collections.abc as collections_abc
except ImportError:
import collections as collections_abc # Fallback for PY3.2.
if sys.version_info[:2] >= (3, 6):
import _collections_abc # Needed for private function _check_methods # noqa
try:
from types import WrapperDescriptorType, MethodWrapperType, MethodDescriptorType
except ImportError:
WrapperDescriptorType = type(object.__init__)
MethodWrapperType = type(object().__str__)
MethodDescriptorType = type(str.join)
# Please keep __all__ alphabetized within each category.
__all__ = [
# Super-special typing primitives.
'Any',
'Callable',
'ClassVar',
'Generic',
'Optional',
'Tuple',
'Type',
'TypeVar',
'Union',
# ABCs (from collections.abc).
'AbstractSet', # collections.abc.Set.
'GenericMeta', # subclass of abc.ABCMeta and a metaclass
# for 'Generic' and ABCs below.
'ByteString',
'Container',
'ContextManager',
'Hashable',
'ItemsView',
'Iterable',
'Iterator',
'KeysView',
'Mapping',
'MappingView',
'MutableMapping',
'MutableSequence',
'MutableSet',
'Sequence',
'Sized',
'ValuesView',
# The following are added depending on presence
# of their non-generic counterparts in stdlib:
# Awaitable,
# AsyncIterator,
# AsyncIterable,
# Coroutine,
# Collection,
# AsyncGenerator,
# AsyncContextManager
# Structural checks, a.k.a. protocols.
'Reversible',
'SupportsAbs',
'SupportsBytes',
'SupportsComplex',
'SupportsFloat',
'SupportsInt',
'SupportsRound',
# Concrete collection types.
'Counter',
'Deque',
'Dict',
'DefaultDict',
'List',
'Set',
'FrozenSet',
'NamedTuple', # Not really a type.
'Generator',
# One-off things.
'AnyStr',
'cast',
'get_type_hints',
'NewType',
'no_type_check',
'no_type_check_decorator',
'overload',
'Text',
'TYPE_CHECKING',
]
# The pseudo-submodules 're' and 'io' are part of the public
# namespace, but excluded from __all__ because they might stomp on
# legitimate imports of those modules.
def _qualname(x):
if sys.version_info[:2] >= (3, 3):
return x.__qualname__
else:
# Fall back to just name.
return x.__name__
def _trim_name(nm):
whitelist = ('_TypeAlias', '_ForwardRef', '_TypingBase', '_FinalTypingBase')
if nm.startswith('_') and nm not in whitelist:
nm = nm[1:]
return nm
class TypingMeta(type):
"""Metaclass for most types defined in typing module
(not a part of public API).
This overrides __new__() to require an extra keyword parameter
'_root', which serves as a guard against naive subclassing of the
typing classes. Any legitimate class defined using a metaclass
derived from TypingMeta must pass _root=True.
This also defines a dummy constructor (all the work for most typing
constructs is done in __new__) and a nicer repr().
"""
_is_protocol = False
def __new__(cls, name, bases, namespace, *, _root=False):
if not _root:
raise TypeError("Cannot subclass %s" %
(', '.join(map(_type_repr, bases)) or '()'))
return super().__new__(cls, name, bases, namespace)
def __init__(self, *args, **kwds):
pass
def _eval_type(self, globalns, localns):
"""Override this in subclasses to interpret forward references.
For example, List['C'] is internally stored as
List[_ForwardRef('C')], which should evaluate to List[C],
where C is an object found in globalns or localns (searching
localns first, of course).
"""
return self
def _get_type_vars(self, tvars):
pass
def __repr__(self):
qname = _trim_name(_qualname(self))
return '%s.%s' % (self.__module__, qname)
class _TypingBase(metaclass=TypingMeta, _root=True):
"""Internal indicator of special typing constructs."""
__slots__ = ('__weakref__',)
def __init__(self, *args, **kwds):
pass
def __new__(cls, *args, **kwds):
"""Constructor.
This only exists to give a better error message in case
someone tries to subclass a special typing object (not a good idea).
"""
if (len(args) == 3 and
isinstance(args[0], str) and
isinstance(args[1], tuple)):
# Close enough.
raise TypeError("Cannot subclass %r" % cls)
return super().__new__(cls)
# Things that are not classes also need these.
def _eval_type(self, globalns, localns):
return self
def _get_type_vars(self, tvars):
pass
def __repr__(self):
cls = type(self)
qname = _trim_name(_qualname(cls))
return '%s.%s' % (cls.__module__, qname)
def __call__(self, *args, **kwds):
raise TypeError("Cannot instantiate %r" % type(self))
class _FinalTypingBase(_TypingBase, _root=True):
"""Internal mix-in class to prevent instantiation.
Prevents instantiation unless _root=True is given in class call.
It is used to create pseudo-singleton instances Any, Union, Optional, etc.
"""
__slots__ = ()
def __new__(cls, *args, _root=False, **kwds):
self = super().__new__(cls, *args, **kwds)
if _root is True:
return self
raise TypeError("Cannot instantiate %r" % cls)
def __reduce__(self):
return _trim_name(type(self).__name__)
class _ForwardRef(_TypingBase, _root=True):
"""Internal wrapper to hold a forward reference."""
__slots__ = ('__forward_arg__', '__forward_code__',
'__forward_evaluated__', '__forward_value__')
def __init__(self, arg):
super().__init__(arg)
if not isinstance(arg, str):
raise TypeError('Forward reference must be a string -- got %r' % (arg,))
try:
code = compile(arg, '<string>', 'eval')
except SyntaxError:
raise SyntaxError('Forward reference must be an expression -- got %r' %
(arg,))
self.__forward_arg__ = arg
self.__forward_code__ = code
self.__forward_evaluated__ = False
self.__forward_value__ = None
def _eval_type(self, globalns, localns):
if not self.__forward_evaluated__ or localns is not globalns:
if globalns is None and localns is None:
globalns = localns = {}
elif globalns is None:
globalns = localns
elif localns is None:
localns = globalns
self.__forward_value__ = _type_check(
eval(self.__forward_code__, globalns, localns),
"Forward references must evaluate to types.")
self.__forward_evaluated__ = True
return self.__forward_value__
def __eq__(self, other):
if not isinstance(other, _ForwardRef):
return NotImplemented
return (self.__forward_arg__ == other.__forward_arg__ and
self.__forward_value__ == other.__forward_value__)
def __hash__(self):
return hash((self.__forward_arg__, self.__forward_value__))
def __instancecheck__(self, obj):
raise TypeError("Forward references cannot be used with isinstance().")
def __subclasscheck__(self, cls):
raise TypeError("Forward references cannot be used with issubclass().")
def __repr__(self):
return '_ForwardRef(%r)' % (self.__forward_arg__,)
class _TypeAlias(_TypingBase, _root=True):
"""Internal helper class for defining generic variants of concrete types.
Note that this is not a type; let's call it a pseudo-type. It cannot
be used in instance and subclass checks in parameterized form, i.e.
``isinstance(42, Match[str])`` raises ``TypeError`` instead of returning
``False``.
"""
__slots__ = ('name', 'type_var', 'impl_type', 'type_checker')
def __init__(self, name, type_var, impl_type, type_checker):
"""Initializer.
Args:
name: The name, e.g. 'Pattern'.
type_var: The type parameter, e.g. AnyStr, or the
specific type, e.g. str.
impl_type: The implementation type.
type_checker: Function that takes an impl_type instance.
and returns a value that should be a type_var instance.
"""
assert isinstance(name, str), repr(name)
assert isinstance(impl_type, type), repr(impl_type)
assert not isinstance(impl_type, TypingMeta), repr(impl_type)
assert isinstance(type_var, (type, _TypingBase)), repr(type_var)
self.name = name
self.type_var = type_var
self.impl_type = impl_type
self.type_checker = type_checker
def __repr__(self):
return "%s[%s]" % (self.name, _type_repr(self.type_var))
def __getitem__(self, parameter):
if not isinstance(self.type_var, TypeVar):
raise TypeError("%s cannot be further parameterized." % self)
if self.type_var.__constraints__ and isinstance(parameter, type):
if not issubclass(parameter, self.type_var.__constraints__):
raise TypeError("%s is not a valid substitution for %s." %
(parameter, self.type_var))
if isinstance(parameter, TypeVar) and parameter is not self.type_var:
raise TypeError("%s cannot be re-parameterized." % self)
return self.__class__(self.name, parameter,
self.impl_type, self.type_checker)
def __eq__(self, other):
if not isinstance(other, _TypeAlias):
return NotImplemented
return self.name == other.name and self.type_var == other.type_var
def __hash__(self):
return hash((self.name, self.type_var))
def __instancecheck__(self, obj):
if not isinstance(self.type_var, TypeVar):
raise TypeError("Parameterized type aliases cannot be used "
"with isinstance().")
return isinstance(obj, self.impl_type)
def __subclasscheck__(self, cls):
if not isinstance(self.type_var, TypeVar):
raise TypeError("Parameterized type aliases cannot be used "
"with issubclass().")
return issubclass(cls, self.impl_type)
def _get_type_vars(types, tvars):
for t in types:
if isinstance(t, TypingMeta) or isinstance(t, _TypingBase):
t._get_type_vars(tvars)
def _type_vars(types):
tvars = []
_get_type_vars(types, tvars)
return tuple(tvars)
def _eval_type(t, globalns, localns):
if isinstance(t, TypingMeta) or isinstance(t, _TypingBase):
return t._eval_type(globalns, localns)
return t
def _type_check(arg, msg):
"""Check that the argument is a type, and return it (internal helper).
As a special case, accept None and return type(None) instead.
Also, _TypeAlias instances (e.g. Match, Pattern) are acceptable.
The msg argument is a human-readable error message, e.g.
"Union[arg, ...]: arg should be a type."
We append the repr() of the actual value (truncated to 100 chars).
"""
if arg is None:
return type(None)
if isinstance(arg, str):
arg = _ForwardRef(arg)
if (
isinstance(arg, _TypingBase) and type(arg).__name__ == '_ClassVar' or
not isinstance(arg, (type, _TypingBase)) and not callable(arg)
):
raise TypeError(msg + " Got %.100r." % (arg,))
# Bare Union etc. are not valid as type arguments
if (
type(arg).__name__ in ('_Union', '_Optional') and
not getattr(arg, '__origin__', None) or
isinstance(arg, TypingMeta) and arg._gorg in (Generic, _Protocol)
):
raise TypeError("Plain %s is not valid as type argument" % arg)
return arg
def _type_repr(obj):
"""Return the repr() of an object, special-casing types (internal helper).
If obj is a type, we return a shorter version than the default
type.__repr__, based on the module and qualified name, which is
typically enough to uniquely identify a type. For everything
else, we fall back on repr(obj).
"""
if isinstance(obj, type) and not isinstance(obj, TypingMeta):
if obj.__module__ == 'builtins':
return _qualname(obj)
return '%s.%s' % (obj.__module__, _qualname(obj))
if obj is ...:
return('...')
if isinstance(obj, types.FunctionType):
return obj.__name__
return repr(obj)
class _Any(_FinalTypingBase, _root=True):
"""Special type indicating an unconstrained type.
- Any is compatible with every type.
- Any assumed to have all methods.
- All values assumed to be instances of Any.
Note that all the above statements are true from the point of view of
static type checkers. At runtime, Any should not be used with instance
or class checks.
"""
__slots__ = ()
def __instancecheck__(self, obj):
raise TypeError("Any cannot be used with isinstance().")
def __subclasscheck__(self, cls):
raise TypeError("Any cannot be used with issubclass().")
Any = _Any(_root=True)
class _NoReturn(_FinalTypingBase, _root=True):
"""Special type indicating functions that never return.
Example::
from typing import NoReturn
def stop() -> NoReturn:
raise Exception('no way')
This type is invalid in other positions, e.g., ``List[NoReturn]``
will fail in static type checkers.
"""
__slots__ = ()
def __instancecheck__(self, obj):
raise TypeError("NoReturn cannot be used with isinstance().")
def __subclasscheck__(self, cls):
raise TypeError("NoReturn cannot be used with issubclass().")
NoReturn = _NoReturn(_root=True)
class TypeVar(_TypingBase, _root=True):
"""Type variable.
Usage::
T = TypeVar('T') # Can be anything
A = TypeVar('A', str, bytes) # Must be str or bytes
Type variables exist primarily for the benefit of static type
checkers. They serve as the parameters for generic types as well
as for generic function definitions. See class Generic for more
information on generic types. Generic functions work as follows:
def repeat(x: T, n: int) -> List[T]:
'''Return a list containing n references to x.'''
return [x]*n
def longest(x: A, y: A) -> A:
'''Return the longest of two strings.'''
return x if len(x) >= len(y) else y
The latter example's signature is essentially the overloading
of (str, str) -> str and (bytes, bytes) -> bytes. Also note
that if the arguments are instances of some subclass of str,
the return type is still plain str.
At runtime, isinstance(x, T) and issubclass(C, T) will raise TypeError.
Type variables defined with covariant=True or contravariant=True
can be used do declare covariant or contravariant generic types.
See PEP 484 for more details. By default generic types are invariant
in all type variables.
Type variables can be introspected. e.g.:
T.__name__ == 'T'
T.__constraints__ == ()
T.__covariant__ == False
T.__contravariant__ = False
A.__constraints__ == (str, bytes)
"""
__slots__ = ('__name__', '__bound__', '__constraints__',
'__covariant__', '__contravariant__')
def __init__(self, name, *constraints, bound=None,
covariant=False, contravariant=False):
super().__init__(name, *constraints, bound=bound,
covariant=covariant, contravariant=contravariant)
self.__name__ = name
if covariant and contravariant:
raise ValueError("Bivariant types are not supported.")
self.__covariant__ = bool(covariant)
self.__contravariant__ = bool(contravariant)
if constraints and bound is not None:
raise TypeError("Constraints cannot be combined with bound=...")
if constraints and len(constraints) == 1:
raise TypeError("A single constraint is not allowed")
msg = "TypeVar(name, constraint, ...): constraints must be types."
self.__constraints__ = tuple(_type_check(t, msg) for t in constraints)
if bound:
self.__bound__ = _type_check(bound, "Bound must be a type.")
else:
self.__bound__ = None
def _get_type_vars(self, tvars):
if self not in tvars:
tvars.append(self)
def __repr__(self):
if self.__covariant__:
prefix = '+'
elif self.__contravariant__:
prefix = '-'
else:
prefix = '~'
return prefix + self.__name__
def __instancecheck__(self, instance):
raise TypeError("Type variables cannot be used with isinstance().")
def __subclasscheck__(self, cls):
raise TypeError("Type variables cannot be used with issubclass().")
# Some unconstrained type variables. These are used by the container types.
# (These are not for export.)
T = TypeVar('T') # Any type.
KT = TypeVar('KT') # Key type.
VT = TypeVar('VT') # Value type.
T_co = TypeVar('T_co', covariant=True) # Any type covariant containers.
V_co = TypeVar('V_co', covariant=True) # Any type covariant containers.
VT_co = TypeVar('VT_co', covariant=True) # Value type covariant containers.
T_contra = TypeVar('T_contra', contravariant=True) # Ditto contravariant.
# A useful type variable with constraints. This represents string types.
# (This one *is* for export!)
AnyStr = TypeVar('AnyStr', bytes, str)
def _replace_arg(arg, tvars, args):
"""An internal helper function: replace arg if it is a type variable
found in tvars with corresponding substitution from args or
with corresponding substitution sub-tree if arg is a generic type.
"""
if tvars is None:
tvars = []
if hasattr(arg, '_subs_tree') and isinstance(arg, (GenericMeta, _TypingBase)):
return arg._subs_tree(tvars, args)
if isinstance(arg, TypeVar):
for i, tvar in enumerate(tvars):
if arg == tvar:
return args[i]
return arg
# Special typing constructs Union, Optional, Generic, Callable and Tuple
# use three special attributes for internal bookkeeping of generic types:
# * __parameters__ is a tuple of unique free type parameters of a generic
# type, for example, Dict[T, T].__parameters__ == (T,);
# * __origin__ keeps a reference to a type that was subscripted,
# e.g., Union[T, int].__origin__ == Union;
# * __args__ is a tuple of all arguments used in subscripting,
# e.g., Dict[T, int].__args__ == (T, int).
def _subs_tree(cls, tvars=None, args=None):
"""An internal helper function: calculate substitution tree
for generic cls after replacing its type parameters with
substitutions in tvars -> args (if any).
Repeat the same following __origin__'s.
Return a list of arguments with all possible substitutions
performed. Arguments that are generic classes themselves are represented
as tuples (so that no new classes are created by this function).
For example: _subs_tree(List[Tuple[int, T]][str]) == [(Tuple, int, str)]
"""
if cls.__origin__ is None:
return cls
# Make of chain of origins (i.e. cls -> cls.__origin__)
current = cls.__origin__
orig_chain = []
while current.__origin__ is not None:
orig_chain.append(current)
current = current.__origin__
# Replace type variables in __args__ if asked ...
tree_args = []
for arg in cls.__args__:
tree_args.append(_replace_arg(arg, tvars, args))
# ... then continue replacing down the origin chain.
for ocls in orig_chain:
new_tree_args = []
for arg in ocls.__args__:
new_tree_args.append(_replace_arg(arg, ocls.__parameters__, tree_args))
tree_args = new_tree_args
return tree_args
def _remove_dups_flatten(parameters):
"""An internal helper for Union creation and substitution: flatten Union's
among parameters, then remove duplicates and strict subclasses.
"""
# Flatten out Union[Union[...], ...].
params = []
for p in parameters:
if isinstance(p, _Union) and p.__origin__ is Union:
params.extend(p.__args__)
elif isinstance(p, tuple) and len(p) > 0 and p[0] is Union:
params.extend(p[1:])
else:
params.append(p)
# Weed out strict duplicates, preserving the first of each occurrence.
all_params = set(params)
if len(all_params) < len(params):
new_params = []
for t in params:
if t in all_params:
new_params.append(t)
all_params.remove(t)
params = new_params
assert not all_params, all_params
# Weed out subclasses.
# E.g. Union[int, Employee, Manager] == Union[int, Employee].
# If object is present it will be sole survivor among proper classes.
# Never discard type variables.
# (In particular, Union[str, AnyStr] != AnyStr.)
all_params = set(params)
for t1 in params:
if not isinstance(t1, type):
continue
if any(isinstance(t2, type) and issubclass(t1, t2)
for t2 in all_params - {t1}
if not (isinstance(t2, GenericMeta) and
t2.__origin__ is not None)):
all_params.remove(t1)
return tuple(t for t in params if t in all_params)
def _check_generic(cls, parameters):
# Check correct count for parameters of a generic cls (internal helper).
if not cls.__parameters__:
raise TypeError("%s is not a generic class" % repr(cls))
alen = len(parameters)
elen = len(cls.__parameters__)
if alen != elen:
raise TypeError("Too %s parameters for %s; actual %s, expected %s" %
("many" if alen > elen else "few", repr(cls), alen, elen))
_cleanups = []
def _tp_cache(func):
"""Internal wrapper caching __getitem__ of generic types with a fallback to
original function for non-hashable arguments.
"""
cached = functools.lru_cache()(func)
_cleanups.append(cached.cache_clear)
@functools.wraps(func)
def inner(*args, **kwds):
try:
return cached(*args, **kwds)
except TypeError:
pass # All real errors (not unhashable args) are raised below.
return func(*args, **kwds)
return inner
class _Union(_FinalTypingBase, _root=True):
"""Union type; Union[X, Y] means either X or Y.
To define a union, use e.g. Union[int, str]. Details:
- The arguments must be types and there must be at least one.
- None as an argument is a special case and is replaced by
type(None).
- Unions of unions are flattened, e.g.::
Union[Union[int, str], float] == Union[int, str, float]
- Unions of a single argument vanish, e.g.::
Union[int] == int # The constructor actually returns int
- Redundant arguments are skipped, e.g.::
Union[int, str, int] == Union[int, str]
- When comparing unions, the argument order is ignored, e.g.::
Union[int, str] == Union[str, int]
- When two arguments have a subclass relationship, the least
derived argument is kept, e.g.::
class Employee: pass
class Manager(Employee): pass
Union[int, Employee, Manager] == Union[int, Employee]
Union[Manager, int, Employee] == Union[int, Employee]
Union[Employee, Manager] == Employee
- Similar for object::
Union[int, object] == object
- You cannot subclass or instantiate a union.
- You can use Optional[X] as a shorthand for Union[X, None].
"""
__slots__ = ('__parameters__', '__args__', '__origin__', '__tree_hash__')
def __new__(cls, parameters=None, origin=None, *args, _root=False):
self = super().__new__(cls, parameters, origin, *args, _root=_root)
if origin is None:
self.__parameters__ = None
self.__args__ = None
self.__origin__ = None
self.__tree_hash__ = hash(frozenset(('Union',)))
return self
if not isinstance(parameters, tuple):
raise TypeError("Expected parameters=<tuple>")
if origin is Union:
parameters = _remove_dups_flatten(parameters)
# It's not a union if there's only one type left.
if len(parameters) == 1:
return parameters[0]
self.__parameters__ = _type_vars(parameters)
self.__args__ = parameters
self.__origin__ = origin
# Pre-calculate the __hash__ on instantiation.
# This improves speed for complex substitutions.
subs_tree = self._subs_tree()
if isinstance(subs_tree, tuple):
self.__tree_hash__ = hash(frozenset(subs_tree))
else:
self.__tree_hash__ = hash(subs_tree)
return self
def _eval_type(self, globalns, localns):
if self.__args__ is None:
return self
ev_args = tuple(_eval_type(t, globalns, localns) for t in self.__args__)
ev_origin = _eval_type(self.__origin__, globalns, localns)
if ev_args == self.__args__ and ev_origin == self.__origin__:
# Everything is already evaluated.
return self
return self.__class__(ev_args, ev_origin, _root=True)
def _get_type_vars(self, tvars):
if self.__origin__ and self.__parameters__:
_get_type_vars(self.__parameters__, tvars)
def __repr__(self):
if self.__origin__ is None:
return super().__repr__()
tree = self._subs_tree()
if not isinstance(tree, tuple):
return repr(tree)
return tree[0]._tree_repr(tree)
def _tree_repr(self, tree):
arg_list = []
for arg in tree[1:]:
if not isinstance(arg, tuple):
arg_list.append(_type_repr(arg))
else:
arg_list.append(arg[0]._tree_repr(arg))
return super().__repr__() + '[%s]' % ', '.join(arg_list)
@_tp_cache
def __getitem__(self, parameters):
if parameters == ():
raise TypeError("Cannot take a Union of no types.")
if not isinstance(parameters, tuple):
parameters = (parameters,)
if self.__origin__ is None:
msg = "Union[arg, ...]: each arg must be a type."
else:
msg = "Parameters to generic types must be types."
parameters = tuple(_type_check(p, msg) for p in parameters)
if self is not Union:
_check_generic(self, parameters)
return self.__class__(parameters, origin=self, _root=True)
def _subs_tree(self, tvars=None, args=None):
if self is Union:
return Union # Nothing to substitute
tree_args = _subs_tree(self, tvars, args)
tree_args = _remove_dups_flatten(tree_args)
if len(tree_args) == 1:
return tree_args[0] # Union of a single type is that type
return (Union,) + tree_args
def __eq__(self, other):
if isinstance(other, _Union):
return self.__tree_hash__ == other.__tree_hash__
elif self is not Union:
return self._subs_tree() == other
else:
return self is other
def __hash__(self):
return self.__tree_hash__
def __instancecheck__(self, obj):
raise TypeError("Unions cannot be used with isinstance().")
def __subclasscheck__(self, cls):
raise TypeError("Unions cannot be used with issubclass().")
Union = _Union(_root=True)
class _Optional(_FinalTypingBase, _root=True):
"""Optional type.
Optional[X] is equivalent to Union[X, None].
"""
__slots__ = ()
@_tp_cache
def __getitem__(self, arg):
arg = _type_check(arg, "Optional[t] requires a single type.")
return Union[arg, type(None)]
Optional = _Optional(_root=True)
def _next_in_mro(cls):
"""Helper for Generic.__new__.
Returns the class after the last occurrence of Generic or
Generic[...] in cls.__mro__.
"""
next_in_mro = object
# Look for the last occurrence of Generic or Generic[...].
for i, c in enumerate(cls.__mro__[:-1]):
if isinstance(c, GenericMeta) and c._gorg is Generic:
next_in_mro = cls.__mro__[i + 1]
return next_in_mro
def _make_subclasshook(cls):
"""Construct a __subclasshook__ callable that incorporates
the associated __extra__ class in subclass checks performed
against cls.
"""
if isinstance(cls.__extra__, abc.ABCMeta):
# The logic mirrors that of ABCMeta.__subclasscheck__.
# Registered classes need not be checked here because
# cls and its extra share the same _abc_registry.
def __extrahook__(subclass):
res = cls.__extra__.__subclasshook__(subclass)
if res is not NotImplemented:
return res
if cls.__extra__ in subclass.__mro__:
return True
for scls in cls.__extra__.__subclasses__():
if isinstance(scls, GenericMeta):
continue
if issubclass(subclass, scls):
return True
return NotImplemented
else:
# For non-ABC extras we'll just call issubclass().
def __extrahook__(subclass):
if cls.__extra__ and issubclass(subclass, cls.__extra__):
return True
return NotImplemented
return __extrahook__
def _no_slots_copy(dct):
"""Internal helper: copy class __dict__ and clean slots class variables.
(They will be re-created if necessary by normal class machinery.)
"""
dict_copy = dict(dct)
if '__slots__' in dict_copy:
for slot in dict_copy['__slots__']:
dict_copy.pop(slot, None)
return dict_copy
class GenericMeta(TypingMeta, abc.ABCMeta):
"""Metaclass for generic types.
This is a metaclass for typing.Generic and generic ABCs defined in
typing module. User defined subclasses of GenericMeta can override
__new__ and invoke super().__new__. Note that GenericMeta.__new__
has strict rules on what is allowed in its bases argument:
* plain Generic is disallowed in bases;
* Generic[...] should appear in bases at most once;
* if Generic[...] is present, then it should list all type variables
that appear in other bases.
In addition, type of all generic bases is erased, e.g., C[int] is
stripped to plain C.
"""
def __new__(cls, name, bases, namespace,
tvars=None, args=None, origin=None, extra=None, orig_bases=None):
"""Create a new generic class. GenericMeta.__new__ accepts
keyword arguments that are used for internal bookkeeping, therefore
an override should pass unused keyword arguments to super().
"""
if tvars is not None:
# Called from __getitem__() below.
assert origin is not None
assert all(isinstance(t, TypeVar) for t in tvars), tvars
else:
# Called from class statement.
assert tvars is None, tvars
assert args is None, args
assert origin is None, origin
# Get the full set of tvars from the bases.
tvars = _type_vars(bases)
# Look for Generic[T1, ..., Tn].
# If found, tvars must be a subset of it.
# If not found, tvars is it.
# Also check for and reject plain Generic,
# and reject multiple Generic[...].
gvars = None
for base in bases:
if base is Generic:
raise TypeError("Cannot inherit from plain Generic")
if (isinstance(base, GenericMeta) and
base.__origin__ is Generic):
if gvars is not None:
raise TypeError(
"Cannot inherit from Generic[...] multiple types.")
gvars = base.__parameters__
if gvars is None:
gvars = tvars
else:
tvarset = set(tvars)
gvarset = set(gvars)
if not tvarset <= gvarset:
raise TypeError(
"Some type variables (%s) "
"are not listed in Generic[%s]" %
(", ".join(str(t) for t in tvars if t not in gvarset),
", ".join(str(g) for g in gvars)))
tvars = gvars
initial_bases = bases
if extra is not None and type(extra) is abc.ABCMeta and extra not in bases:
bases = (extra,) + bases
bases = tuple(b._gorg if isinstance(b, GenericMeta) else b for b in bases)
# remove bare Generic from bases if there are other generic bases
if any(isinstance(b, GenericMeta) and b is not Generic for b in bases):
bases = tuple(b for b in bases if b is not Generic)
namespace.update({'__origin__': origin, '__extra__': extra,
'_gorg': None if not origin else origin._gorg})
self = super().__new__(cls, name, bases, namespace, _root=True)
super(GenericMeta, self).__setattr__('_gorg',
self if not origin else origin._gorg)
self.__parameters__ = tvars
# Be prepared that GenericMeta will be subclassed by TupleMeta
# and CallableMeta, those two allow ..., (), or [] in __args___.
self.__args__ = tuple(... if a is _TypingEllipsis else
() if a is _TypingEmpty else
a for a in args) if args else None
# Speed hack (https://github.com/python/typing/issues/196).
self.__next_in_mro__ = _next_in_mro(self)
# Preserve base classes on subclassing (__bases__ are type erased now).
if orig_bases is None:
self.__orig_bases__ = initial_bases
# This allows unparameterized generic collections to be used
# with issubclass() and isinstance() in the same way as their
# collections.abc counterparts (e.g., isinstance([], Iterable)).
if (
'__subclasshook__' not in namespace and extra or
# allow overriding
getattr(self.__subclasshook__, '__name__', '') == '__extrahook__'
):
self.__subclasshook__ = _make_subclasshook(self)
if isinstance(extra, abc.ABCMeta):
self._abc_registry = extra._abc_registry
self._abc_cache = extra._abc_cache
elif origin is not None:
self._abc_registry = origin._abc_registry
self._abc_cache = origin._abc_cache
if origin and hasattr(origin, '__qualname__'): # Fix for Python 3.2.
self.__qualname__ = origin.__qualname__
self.__tree_hash__ = (hash(self._subs_tree()) if origin else
super(GenericMeta, self).__hash__())
return self
# _abc_negative_cache and _abc_negative_cache_version
# realised as descriptors, since GenClass[t1, t2, ...] always
# share subclass info with GenClass.
# This is an important memory optimization.
@property
def _abc_negative_cache(self):
if isinstance(self.__extra__, abc.ABCMeta):
return self.__extra__._abc_negative_cache
return self._gorg._abc_generic_negative_cache
@_abc_negative_cache.setter
def _abc_negative_cache(self, value):
if self.__origin__ is None:
if isinstance(self.__extra__, abc.ABCMeta):
self.__extra__._abc_negative_cache = value
else:
self._abc_generic_negative_cache = value
@property
def _abc_negative_cache_version(self):
if isinstance(self.__extra__, abc.ABCMeta):
return self.__extra__._abc_negative_cache_version
return self._gorg._abc_generic_negative_cache_version
@_abc_negative_cache_version.setter
def _abc_negative_cache_version(self, value):
if self.__origin__ is None:
if isinstance(self.__extra__, abc.ABCMeta):
self.__extra__._abc_negative_cache_version = value
else:
self._abc_generic_negative_cache_version = value
def _get_type_vars(self, tvars):
if self.__origin__ and self.__parameters__:
_get_type_vars(self.__parameters__, tvars)
def _eval_type(self, globalns, localns):
ev_origin = (self.__origin__._eval_type(globalns, localns)
if self.__origin__ else None)
ev_args = tuple(_eval_type(a, globalns, localns) for a
in self.__args__) if self.__args__ else None
if ev_origin == self.__origin__ and ev_args == self.__args__:
return self
return self.__class__(self.__name__,
self.__bases__,
_no_slots_copy(self.__dict__),
tvars=_type_vars(ev_args) if ev_args else None,
args=ev_args,
origin=ev_origin,
extra=self.__extra__,
orig_bases=self.__orig_bases__)
def __repr__(self):
if self.__origin__ is None:
return super().__repr__()
return self._tree_repr(self._subs_tree())
def _tree_repr(self, tree):
arg_list = []
for arg in tree[1:]:
if arg == ():
arg_list.append('()')
elif not isinstance(arg, tuple):
arg_list.append(_type_repr(arg))
else:
arg_list.append(arg[0]._tree_repr(arg))
return super().__repr__() + '[%s]' % ', '.join(arg_list)
def _subs_tree(self, tvars=None, args=None):
if self.__origin__ is None:
return self
tree_args = _subs_tree(self, tvars, args)
return (self._gorg,) + tuple(tree_args)
def __eq__(self, other):
if not isinstance(other, GenericMeta):
return NotImplemented
if self.__origin__ is None or other.__origin__ is None:
return self is other
return self.__tree_hash__ == other.__tree_hash__
def __hash__(self):
return self.__tree_hash__
@_tp_cache
def __getitem__(self, params):
if not isinstance(params, tuple):
params = (params,)
if not params and self._gorg is not Tuple:
raise TypeError(
"Parameter list to %s[...] cannot be empty" % _qualname(self))
msg = "Parameters to generic types must be types."
params = tuple(_type_check(p, msg) for p in params)
if self is Generic:
# Generic can only be subscripted with unique type variables.
if not all(isinstance(p, TypeVar) for p in params):
raise TypeError(
"Parameters to Generic[...] must all be type variables")
if len(set(params)) != len(params):
raise TypeError(
"Parameters to Generic[...] must all be unique")
tvars = params
args = params
elif self in (Tuple, Callable):
tvars = _type_vars(params)
args = params
elif self is _Protocol:
# _Protocol is internal, don't check anything.
tvars = params
args = params
elif self.__origin__ in (Generic, _Protocol):
# Can't subscript Generic[...] or _Protocol[...].
raise TypeError("Cannot subscript already-subscripted %s" %
repr(self))
else:
# Subscripting a regular Generic subclass.
_check_generic(self, params)
tvars = _type_vars(params)
args = params
prepend = (self,) if self.__origin__ is None else ()
return self.__class__(self.__name__,
prepend + self.__bases__,
_no_slots_copy(self.__dict__),
tvars=tvars,
args=args,
origin=self,
extra=self.__extra__,
orig_bases=self.__orig_bases__)
def __subclasscheck__(self, cls):
if self.__origin__ is not None:
if sys._getframe(1).f_globals['__name__'] not in ['abc', 'functools']:
raise TypeError("Parameterized generics cannot be used with class "
"or instance checks")
return False
if self is Generic:
raise TypeError("Class %r cannot be used with class "
"or instance checks" % self)
return super().__subclasscheck__(cls)
def __instancecheck__(self, instance):
# Since we extend ABC.__subclasscheck__ and
# ABC.__instancecheck__ inlines the cache checking done by the
# latter, we must extend __instancecheck__ too. For simplicity
# we just skip the cache check -- instance checks for generic
# classes are supposed to be rare anyways.
return issubclass(instance.__class__, self)
def __setattr__(self, attr, value):
# We consider all the subscripted generics as proxies for original class
if (
attr.startswith('__') and attr.endswith('__') or
attr.startswith('_abc_') or
self._gorg is None # The class is not fully created, see #typing/506
):
super(GenericMeta, self).__setattr__(attr, value)
else:
super(GenericMeta, self._gorg).__setattr__(attr, value)
# Prevent checks for Generic to crash when defining Generic.
Generic = None
def _generic_new(base_cls, cls, *args, **kwds):
# Assure type is erased on instantiation,
# but attempt to store it in __orig_class__
if cls.__origin__ is None:
if (base_cls.__new__ is object.__new__ and
cls.__init__ is not object.__init__):
return base_cls.__new__(cls)
else:
return base_cls.__new__(cls, *args, **kwds)
else:
origin = cls._gorg
if (base_cls.__new__ is object.__new__ and
cls.__init__ is not object.__init__):
obj = base_cls.__new__(origin)
else:
obj = base_cls.__new__(origin, *args, **kwds)
try:
obj.__orig_class__ = cls
except AttributeError:
pass
obj.__init__(*args, **kwds)
return obj
class Generic(metaclass=GenericMeta):
"""Abstract base class for generic types.
A generic type is typically declared by inheriting from
this class parameterized with one or more type variables.
For example, a generic mapping type might be defined as::
class Mapping(Generic[KT, VT]):
def __getitem__(self, key: KT) -> VT:
...
# Etc.
This class can then be used as follows::
def lookup_name(mapping: Mapping[KT, VT], key: KT, default: VT) -> VT:
try:
return mapping[key]
except KeyError:
return default
"""
__slots__ = ()
def __new__(cls, *args, **kwds):
if cls._gorg is Generic:
raise TypeError("Type Generic cannot be instantiated; "
"it can be used only as a base class")
return _generic_new(cls.__next_in_mro__, cls, *args, **kwds)
class _TypingEmpty:
"""Internal placeholder for () or []. Used by TupleMeta and CallableMeta
to allow empty list/tuple in specific places, without allowing them
to sneak in where prohibited.
"""
class _TypingEllipsis:
"""Internal placeholder for ... (ellipsis)."""
class TupleMeta(GenericMeta):
"""Metaclass for Tuple (internal)."""
@_tp_cache
def __getitem__(self, parameters):
if self.__origin__ is not None or self._gorg is not Tuple:
# Normal generic rules apply if this is not the first subscription
# or a subscription of a subclass.
return super().__getitem__(parameters)
if parameters == ():
return super().__getitem__((_TypingEmpty,))
if not isinstance(parameters, tuple):
parameters = (parameters,)
if len(parameters) == 2 and parameters[1] is ...:
msg = "Tuple[t, ...]: t must be a type."
p = _type_check(parameters[0], msg)
return super().__getitem__((p, _TypingEllipsis))
msg = "Tuple[t0, t1, ...]: each t must be a type."
parameters = tuple(_type_check(p, msg) for p in parameters)
return super().__getitem__(parameters)
def __instancecheck__(self, obj):
if self.__args__ is None:
return isinstance(obj, tuple)
raise TypeError("Parameterized Tuple cannot be used "
"with isinstance().")
def __subclasscheck__(self, cls):
if self.__args__ is None:
return issubclass(cls, tuple)
raise TypeError("Parameterized Tuple cannot be used "
"with issubclass().")
class Tuple(tuple, extra=tuple, metaclass=TupleMeta):
"""Tuple type; Tuple[X, Y] is the cross-product type of X and Y.
Example: Tuple[T1, T2] is a tuple of two elements corresponding
to type variables T1 and T2. Tuple[int, float, str] is a tuple
of an int, a float and a string.
To specify a variable-length tuple of homogeneous type, use Tuple[T, ...].
"""
__slots__ = ()
def __new__(cls, *args, **kwds):
if cls._gorg is Tuple:
raise TypeError("Type Tuple cannot be instantiated; "
"use tuple() instead")
return _generic_new(tuple, cls, *args, **kwds)
class CallableMeta(GenericMeta):
"""Metaclass for Callable (internal)."""
def __repr__(self):
if self.__origin__ is None:
return super().__repr__()
return self._tree_repr(self._subs_tree())
def _tree_repr(self, tree):
if self._gorg is not Callable:
return super()._tree_repr(tree)
# For actual Callable (not its subclass) we override
# super()._tree_repr() for nice formatting.
arg_list = []
for arg in tree[1:]:
if not isinstance(arg, tuple):
arg_list.append(_type_repr(arg))
else:
arg_list.append(arg[0]._tree_repr(arg))
if arg_list[0] == '...':
return repr(tree[0]) + '[..., %s]' % arg_list[1]
return (repr(tree[0]) +
'[[%s], %s]' % (', '.join(arg_list[:-1]), arg_list[-1]))
def __getitem__(self, parameters):
"""A thin wrapper around __getitem_inner__ to provide the latter
with hashable arguments to improve speed.
"""
if self.__origin__ is not None or self._gorg is not Callable:
return super().__getitem__(parameters)
if not isinstance(parameters, tuple) or len(parameters) != 2:
raise TypeError("Callable must be used as "
"Callable[[arg, ...], result].")
args, result = parameters
if args is Ellipsis:
parameters = (Ellipsis, result)
else:
if not isinstance(args, list):
raise TypeError("Callable[args, result]: args must be a list."
" Got %.100r." % (args,))
parameters = (tuple(args), result)
return self.__getitem_inner__(parameters)
@_tp_cache
def __getitem_inner__(self, parameters):
args, result = parameters
msg = "Callable[args, result]: result must be a type."
result = _type_check(result, msg)
if args is Ellipsis:
return super().__getitem__((_TypingEllipsis, result))
msg = "Callable[[arg, ...], result]: each arg must be a type."
args = tuple(_type_check(arg, msg) for arg in args)
parameters = args + (result,)
return super().__getitem__(parameters)
class Callable(extra=collections_abc.Callable, metaclass=CallableMeta):
"""Callable type; Callable[[int], str] is a function of (int) -> str.
The subscription syntax must always be used with exactly two
values: the argument list and the return type. The argument list
must be a list of types or ellipsis; the return type must be a single type.
There is no syntax to indicate optional or keyword arguments,
such function types are rarely used as callback types.
"""
__slots__ = ()
def __new__(cls, *args, **kwds):
if cls._gorg is Callable:
raise TypeError("Type Callable cannot be instantiated; "
"use a non-abstract subclass instead")
return _generic_new(cls.__next_in_mro__, cls, *args, **kwds)
class _ClassVar(_FinalTypingBase, _root=True):
"""Special type construct to mark class variables.
An annotation wrapped in ClassVar indicates that a given
attribute is intended to be used as a class variable and
should not be set on instances of that class. Usage::
class Starship:
stats: ClassVar[Dict[str, int]] = {} # class variable
damage: int = 10 # instance variable
ClassVar accepts only types and cannot be further subscribed.
Note that ClassVar is not a class itself, and should not
be used with isinstance() or issubclass().
"""
__slots__ = ('__type__',)
def __init__(self, tp=None, **kwds):
self.__type__ = tp
def __getitem__(self, item):
cls = type(self)
if self.__type__ is None:
return cls(_type_check(item,
'{} accepts only single type.'.format(cls.__name__[1:])),
_root=True)
raise TypeError('{} cannot be further subscripted'
.format(cls.__name__[1:]))
def _eval_type(self, globalns, localns):
new_tp = _eval_type(self.__type__, globalns, localns)
if new_tp == self.__type__:
return self
return type(self)(new_tp, _root=True)
def __repr__(self):
r = super().__repr__()
if self.__type__ is not None:
r += '[{}]'.format(_type_repr(self.__type__))
return r
def __hash__(self):
return hash((type(self).__name__, self.__type__))
def __eq__(self, other):
if not isinstance(other, _ClassVar):
return NotImplemented
if self.__type__ is not None:
return self.__type__ == other.__type__
return self is other
ClassVar = _ClassVar(_root=True)
def cast(typ, val):
"""Cast a value to a type.
This returns the value unchanged. To the type checker this
signals that the return value has the designated type, but at
runtime we intentionally don't check anything (we want this
to be as fast as possible).
"""
return val
def _get_defaults(func):
"""Internal helper to extract the default arguments, by name."""
try:
code = func.__code__
except AttributeError:
# Some built-in functions don't have __code__, __defaults__, etc.
return {}
pos_count = code.co_argcount
arg_names = code.co_varnames
arg_names = arg_names[:pos_count]
defaults = func.__defaults__ or ()
kwdefaults = func.__kwdefaults__
res = dict(kwdefaults) if kwdefaults else {}
pos_offset = pos_count - len(defaults)
for name, value in zip(arg_names[pos_offset:], defaults):
assert name not in res
res[name] = value
return res
_allowed_types = (types.FunctionType, types.BuiltinFunctionType,
types.MethodType, types.ModuleType,
WrapperDescriptorType, MethodWrapperType, MethodDescriptorType)
def get_type_hints(obj, globalns=None, localns=None):
"""Return type hints for an object.
This is often the same as obj.__annotations__, but it handles
forward references encoded as string literals, and if necessary
adds Optional[t] if a default value equal to None is set.
The argument may be a module, class, method, or function. The annotations
are returned as a dictionary. For classes, annotations include also
inherited members.
TypeError is raised if the argument is not of a type that can contain
annotations, and an empty dictionary is returned if no annotations are
present.
BEWARE -- the behavior of globalns and localns is counterintuitive
(unless you are familiar with how eval() and exec() work). The
search order is locals first, then globals.
- If no dict arguments are passed, an attempt is made to use the
globals from obj (or the respective module's globals for classes),
and these are also used as the locals. If the object does not appear
to have globals, an empty dictionary is used.
- If one dict argument is passed, it is used for both globals and
locals.
- If two dict arguments are passed, they specify globals and
locals, respectively.
"""
if getattr(obj, '__no_type_check__', None):
return {}
# Classes require a special treatment.
if isinstance(obj, type):
hints = {}
for base in reversed(obj.__mro__):
if globalns is None:
base_globals = sys.modules[base.__module__].__dict__
else:
base_globals = globalns
ann = base.__dict__.get('__annotations__', {})
for name, value in ann.items():
if value is None:
value = type(None)
if isinstance(value, str):
value = _ForwardRef(value)
value = _eval_type(value, base_globals, localns)
hints[name] = value
return hints
if globalns is None:
if isinstance(obj, types.ModuleType):
globalns = obj.__dict__
else:
globalns = getattr(obj, '__globals__', {})
if localns is None:
localns = globalns
elif localns is None:
localns = globalns
hints = getattr(obj, '__annotations__', None)
if hints is None:
# Return empty annotations for something that _could_ have them.
if isinstance(obj, _allowed_types):
return {}
else:
raise TypeError('{!r} is not a module, class, method, '
'or function.'.format(obj))
defaults = _get_defaults(obj)
hints = dict(hints)
for name, value in hints.items():
if value is None:
value = type(None)
if isinstance(value, str):
value = _ForwardRef(value)
value = _eval_type(value, globalns, localns)
if name in defaults and defaults[name] is None:
value = Optional[value]
hints[name] = value
return hints
def no_type_check(arg):
"""Decorator to indicate that annotations are not type hints.
The argument must be a class or function; if it is a class, it
applies recursively to all methods and classes defined in that class
(but not to methods defined in its superclasses or subclasses).
This mutates the function(s) or class(es) in place.
"""
if isinstance(arg, type):
arg_attrs = arg.__dict__.copy()
for attr, val in arg.__dict__.items():
if val in arg.__bases__ + (arg,):
arg_attrs.pop(attr)
for obj in arg_attrs.values():
if isinstance(obj, types.FunctionType):
obj.__no_type_check__ = True
if isinstance(obj, type):
no_type_check(obj)
try:
arg.__no_type_check__ = True
except TypeError: # built-in classes
pass
return arg
def no_type_check_decorator(decorator):
"""Decorator to give another decorator the @no_type_check effect.
This wraps the decorator with something that wraps the decorated
function in @no_type_check.
"""
@functools.wraps(decorator)
def wrapped_decorator(*args, **kwds):
func = decorator(*args, **kwds)
func = no_type_check(func)
return func
return wrapped_decorator
def _overload_dummy(*args, **kwds):
"""Helper for @overload to raise when called."""
raise NotImplementedError(
"You should not call an overloaded function. "
"A series of @overload-decorated functions "
"outside a stub module should always be followed "
"by an implementation that is not @overload-ed.")
def overload(func):
"""Decorator for overloaded functions/methods.
In a stub file, place two or more stub definitions for the same
function in a row, each decorated with @overload. For example:
@overload
def utf8(value: None) -> None: ...
@overload
def utf8(value: bytes) -> bytes: ...
@overload
def utf8(value: str) -> bytes: ...
In a non-stub file (i.e. a regular .py file), do the same but
follow it with an implementation. The implementation should *not*
be decorated with @overload. For example:
@overload
def utf8(value: None) -> None: ...
@overload
def utf8(value: bytes) -> bytes: ...
@overload
def utf8(value: str) -> bytes: ...
def utf8(value):
# implementation goes here
"""
return _overload_dummy
class _ProtocolMeta(GenericMeta):
"""Internal metaclass for _Protocol.
This exists so _Protocol classes can be generic without deriving
from Generic.
"""
def __instancecheck__(self, obj):
if _Protocol not in self.__bases__:
return super().__instancecheck__(obj)
raise TypeError("Protocols cannot be used with isinstance().")
def __subclasscheck__(self, cls):
if not self._is_protocol:
# No structural checks since this isn't a protocol.
return NotImplemented
if self is _Protocol:
# Every class is a subclass of the empty protocol.
return True
# Find all attributes defined in the protocol.
attrs = self._get_protocol_attrs()
for attr in attrs:
if not any(attr in d.__dict__ for d in cls.__mro__):
return False
return True
def _get_protocol_attrs(self):
# Get all Protocol base classes.
protocol_bases = []
for c in self.__mro__:
if getattr(c, '_is_protocol', False) and c.__name__ != '_Protocol':
protocol_bases.append(c)
# Get attributes included in protocol.
attrs = set()
for base in protocol_bases:
for attr in base.__dict__.keys():
# Include attributes not defined in any non-protocol bases.
for c in self.__mro__:
if (c is not base and attr in c.__dict__ and
not getattr(c, '_is_protocol', False)):
break
else:
if (not attr.startswith('_abc_') and
attr != '__abstractmethods__' and
attr != '__annotations__' and
attr != '__weakref__' and
attr != '_is_protocol' and
attr != '_gorg' and
attr != '__dict__' and
attr != '__args__' and
attr != '__slots__' and
attr != '_get_protocol_attrs' and
attr != '__next_in_mro__' and
attr != '__parameters__' and
attr != '__origin__' and
attr != '__orig_bases__' and
attr != '__extra__' and
attr != '__tree_hash__' and
attr != '__module__'):
attrs.add(attr)
return attrs
class _Protocol(metaclass=_ProtocolMeta):
"""Internal base class for protocol classes.
This implements a simple-minded structural issubclass check
(similar but more general than the one-offs in collections.abc
such as Hashable).
"""
__slots__ = ()
_is_protocol = True
# Various ABCs mimicking those in collections.abc.
# A few are simply re-exported for completeness.
Hashable = collections_abc.Hashable # Not generic.
if hasattr(collections_abc, 'Awaitable'):
class Awaitable(Generic[T_co], extra=collections_abc.Awaitable):
__slots__ = ()
__all__.append('Awaitable')
if hasattr(collections_abc, 'Coroutine'):
class Coroutine(Awaitable[V_co], Generic[T_co, T_contra, V_co],
extra=collections_abc.Coroutine):
__slots__ = ()
__all__.append('Coroutine')
if hasattr(collections_abc, 'AsyncIterable'):
class AsyncIterable(Generic[T_co], extra=collections_abc.AsyncIterable):
__slots__ = ()
class AsyncIterator(AsyncIterable[T_co],
extra=collections_abc.AsyncIterator):
__slots__ = ()
__all__.append('AsyncIterable')
__all__.append('AsyncIterator')
class Iterable(Generic[T_co], extra=collections_abc.Iterable):
__slots__ = ()
class Iterator(Iterable[T_co], extra=collections_abc.Iterator):
__slots__ = ()
class SupportsInt(_Protocol):
__slots__ = ()
@abstractmethod
def __int__(self) -> int:
pass
class SupportsFloat(_Protocol):
__slots__ = ()
@abstractmethod
def __float__(self) -> float:
pass
class SupportsComplex(_Protocol):
__slots__ = ()
@abstractmethod
def __complex__(self) -> complex:
pass
class SupportsBytes(_Protocol):
__slots__ = ()
@abstractmethod
def __bytes__(self) -> bytes:
pass
class SupportsAbs(_Protocol[T_co]):
__slots__ = ()
@abstractmethod
def __abs__(self) -> T_co:
pass
class SupportsRound(_Protocol[T_co]):
__slots__ = ()
@abstractmethod
def __round__(self, ndigits: int = 0) -> T_co:
pass
if hasattr(collections_abc, 'Reversible'):
class Reversible(Iterable[T_co], extra=collections_abc.Reversible):
__slots__ = ()
else:
class Reversible(_Protocol[T_co]):
__slots__ = ()
@abstractmethod
def __reversed__(self) -> 'Iterator[T_co]':
pass
Sized = collections_abc.Sized # Not generic.
class Container(Generic[T_co], extra=collections_abc.Container):
__slots__ = ()
if hasattr(collections_abc, 'Collection'):
class Collection(Sized, Iterable[T_co], Container[T_co],
extra=collections_abc.Collection):
__slots__ = ()
__all__.append('Collection')
# Callable was defined earlier.
if hasattr(collections_abc, 'Collection'):
class AbstractSet(Collection[T_co],
extra=collections_abc.Set):
__slots__ = ()
else:
class AbstractSet(Sized, Iterable[T_co], Container[T_co],
extra=collections_abc.Set):
__slots__ = ()
class MutableSet(AbstractSet[T], extra=collections_abc.MutableSet):
__slots__ = ()
# NOTE: It is only covariant in the value type.
if hasattr(collections_abc, 'Collection'):
class Mapping(Collection[KT], Generic[KT, VT_co],
extra=collections_abc.Mapping):
__slots__ = ()
else:
class Mapping(Sized, Iterable[KT], Container[KT], Generic[KT, VT_co],
extra=collections_abc.Mapping):
__slots__ = ()
class MutableMapping(Mapping[KT, VT], extra=collections_abc.MutableMapping):
__slots__ = ()
if hasattr(collections_abc, 'Reversible'):
if hasattr(collections_abc, 'Collection'):
class Sequence(Reversible[T_co], Collection[T_co],
extra=collections_abc.Sequence):
__slots__ = ()
else:
class Sequence(Sized, Reversible[T_co], Container[T_co],
extra=collections_abc.Sequence):
__slots__ = ()
else:
class Sequence(Sized, Iterable[T_co], Container[T_co],
extra=collections_abc.Sequence):
__slots__ = ()
class MutableSequence(Sequence[T], extra=collections_abc.MutableSequence):
__slots__ = ()
class ByteString(Sequence[int], extra=collections_abc.ByteString):
__slots__ = ()
class List(list, MutableSequence[T], extra=list):
__slots__ = ()
def __new__(cls, *args, **kwds):
if cls._gorg is List:
raise TypeError("Type List cannot be instantiated; "
"use list() instead")
return _generic_new(list, cls, *args, **kwds)
class Deque(collections.deque, MutableSequence[T], extra=collections.deque):
__slots__ = ()
def __new__(cls, *args, **kwds):
if cls._gorg is Deque:
return collections.deque(*args, **kwds)
return _generic_new(collections.deque, cls, *args, **kwds)
class Set(set, MutableSet[T], extra=set):
__slots__ = ()
def __new__(cls, *args, **kwds):
if cls._gorg is Set:
raise TypeError("Type Set cannot be instantiated; "
"use set() instead")
return _generic_new(set, cls, *args, **kwds)
class FrozenSet(frozenset, AbstractSet[T_co], extra=frozenset):
__slots__ = ()
def __new__(cls, *args, **kwds):
if cls._gorg is FrozenSet:
raise TypeError("Type FrozenSet cannot be instantiated; "
"use frozenset() instead")
return _generic_new(frozenset, cls, *args, **kwds)
class MappingView(Sized, Iterable[T_co], extra=collections_abc.MappingView):
__slots__ = ()
class KeysView(MappingView[KT], AbstractSet[KT],
extra=collections_abc.KeysView):
__slots__ = ()
class ItemsView(MappingView[Tuple[KT, VT_co]],
AbstractSet[Tuple[KT, VT_co]],
Generic[KT, VT_co],
extra=collections_abc.ItemsView):
__slots__ = ()
class ValuesView(MappingView[VT_co], extra=collections_abc.ValuesView):
__slots__ = ()
if hasattr(contextlib, 'AbstractContextManager'):
class ContextManager(Generic[T_co], extra=contextlib.AbstractContextManager):
__slots__ = ()
else:
class ContextManager(Generic[T_co]):
__slots__ = ()
def __enter__(self):
return self
@abc.abstractmethod
def __exit__(self, exc_type, exc_value, traceback):
return None
@classmethod
def __subclasshook__(cls, C):
if cls is ContextManager:
# In Python 3.6+, it is possible to set a method to None to
# explicitly indicate that the class does not implement an ABC
# (https://bugs.python.org/issue25958), but we do not support
# that pattern here because this fallback class is only used
# in Python 3.5 and earlier.
if (any("__enter__" in B.__dict__ for B in C.__mro__) and
any("__exit__" in B.__dict__ for B in C.__mro__)):
return True
return NotImplemented
if hasattr(contextlib, 'AbstractAsyncContextManager'):
class AsyncContextManager(Generic[T_co],
extra=contextlib.AbstractAsyncContextManager):
__slots__ = ()
__all__.append('AsyncContextManager')
elif sys.version_info[:2] >= (3, 5):
exec("""
class AsyncContextManager(Generic[T_co]):
__slots__ = ()
async def __aenter__(self):
return self
@abc.abstractmethod
async def __aexit__(self, exc_type, exc_value, traceback):
return None
@classmethod
def __subclasshook__(cls, C):
if cls is AsyncContextManager:
if sys.version_info[:2] >= (3, 6):
return _collections_abc._check_methods(C, "__aenter__", "__aexit__")
if (any("__aenter__" in B.__dict__ for B in C.__mro__) and
any("__aexit__" in B.__dict__ for B in C.__mro__)):
return True
return NotImplemented
__all__.append('AsyncContextManager')
""")
class Dict(dict, MutableMapping[KT, VT], extra=dict):
__slots__ = ()
def __new__(cls, *args, **kwds):
if cls._gorg is Dict:
raise TypeError("Type Dict cannot be instantiated; "
"use dict() instead")
return _generic_new(dict, cls, *args, **kwds)
class DefaultDict(collections.defaultdict, MutableMapping[KT, VT],
extra=collections.defaultdict):
__slots__ = ()
def __new__(cls, *args, **kwds):
if cls._gorg is DefaultDict:
return collections.defaultdict(*args, **kwds)
return _generic_new(collections.defaultdict, cls, *args, **kwds)
class Counter(collections.Counter, Dict[T, int], extra=collections.Counter):
__slots__ = ()
def __new__(cls, *args, **kwds):
if cls._gorg is Counter:
return collections.Counter(*args, **kwds)
return _generic_new(collections.Counter, cls, *args, **kwds)
if hasattr(collections, 'ChainMap'):
# ChainMap only exists in 3.3+
__all__.append('ChainMap')
class ChainMap(collections.ChainMap, MutableMapping[KT, VT],
extra=collections.ChainMap):
__slots__ = ()
def __new__(cls, *args, **kwds):
if cls._gorg is ChainMap:
return collections.ChainMap(*args, **kwds)
return _generic_new(collections.ChainMap, cls, *args, **kwds)
# Determine what base class to use for Generator.
if hasattr(collections_abc, 'Generator'):
# Sufficiently recent versions of 3.5 have a Generator ABC.
_G_base = collections_abc.Generator
else:
# Fall back on the exact type.
_G_base = types.GeneratorType
class Generator(Iterator[T_co], Generic[T_co, T_contra, V_co],
extra=_G_base):
__slots__ = ()
def __new__(cls, *args, **kwds):
if cls._gorg is Generator:
raise TypeError("Type Generator cannot be instantiated; "
"create a subclass instead")
return _generic_new(_G_base, cls, *args, **kwds)
if hasattr(collections_abc, 'AsyncGenerator'):
class AsyncGenerator(AsyncIterator[T_co], Generic[T_co, T_contra],
extra=collections_abc.AsyncGenerator):
__slots__ = ()
__all__.append('AsyncGenerator')
# Internal type variable used for Type[].
CT_co = TypeVar('CT_co', covariant=True, bound=type)
# This is not a real generic class. Don't use outside annotations.
class Type(Generic[CT_co], extra=type):
"""A special construct usable to annotate class objects.
For example, suppose we have the following classes::
class User: ... # Abstract base for User classes
class BasicUser(User): ...
class ProUser(User): ...
class TeamUser(User): ...
And a function that takes a class argument that's a subclass of
User and returns an instance of the corresponding class::
U = TypeVar('U', bound=User)
def new_user(user_class: Type[U]) -> U:
user = user_class()
# (Here we could write the user object to a database)
return user
joe = new_user(BasicUser)
At this point the type checker knows that joe has type BasicUser.
"""
__slots__ = ()
def _make_nmtuple(name, types):
msg = "NamedTuple('Name', [(f0, t0), (f1, t1), ...]); each t must be a type"
types = [(n, _type_check(t, msg)) for n, t in types]
nm_tpl = collections.namedtuple(name, [n for n, t in types])
# Prior to PEP 526, only _field_types attribute was assigned.
# Now, both __annotations__ and _field_types are used to maintain compatibility.
nm_tpl.__annotations__ = nm_tpl._field_types = collections.OrderedDict(types)
try:
nm_tpl.__module__ = sys._getframe(2).f_globals.get('__name__', '__main__')
except (AttributeError, ValueError):
pass
return nm_tpl
_PY36 = sys.version_info[:2] >= (3, 6)
# attributes prohibited to set in NamedTuple class syntax
_prohibited = ('__new__', '__init__', '__slots__', '__getnewargs__',
'_fields', '_field_defaults', '_field_types',
'_make', '_replace', '_asdict', '_source')
_special = ('__module__', '__name__', '__qualname__', '__annotations__')
class NamedTupleMeta(type):
def __new__(cls, typename, bases, ns):
if ns.get('_root', False):
return super().__new__(cls, typename, bases, ns)
if not _PY36:
raise TypeError("Class syntax for NamedTuple is only supported"
" in Python 3.6+")
types = ns.get('__annotations__', {})
nm_tpl = _make_nmtuple(typename, types.items())
defaults = []
defaults_dict = {}
for field_name in types:
if field_name in ns:
default_value = ns[field_name]
defaults.append(default_value)
defaults_dict[field_name] = default_value
elif defaults:
raise TypeError("Non-default namedtuple field {field_name} cannot "
"follow default field(s) {default_names}"
.format(field_name=field_name,
default_names=', '.join(defaults_dict.keys())))
nm_tpl.__new__.__annotations__ = collections.OrderedDict(types)
nm_tpl.__new__.__defaults__ = tuple(defaults)
nm_tpl._field_defaults = defaults_dict
# update from user namespace without overriding special namedtuple attributes
for key in ns:
if key in _prohibited:
raise AttributeError("Cannot overwrite NamedTuple attribute " + key)
elif key not in _special and key not in nm_tpl._fields:
setattr(nm_tpl, key, ns[key])
return nm_tpl
class NamedTuple(metaclass=NamedTupleMeta):
"""Typed version of namedtuple.
Usage in Python versions >= 3.6::
class Employee(NamedTuple):
name: str
id: int
This is equivalent to::
Employee = collections.namedtuple('Employee', ['name', 'id'])
The resulting class has extra __annotations__ and _field_types
attributes, giving an ordered dict mapping field names to types.
__annotations__ should be preferred, while _field_types
is kept to maintain pre PEP 526 compatibility. (The field names
are in the _fields attribute, which is part of the namedtuple
API.) Alternative equivalent keyword syntax is also accepted::
Employee = NamedTuple('Employee', name=str, id=int)
In Python versions <= 3.5 use::
Employee = NamedTuple('Employee', [('name', str), ('id', int)])
"""
_root = True
def __new__(self, typename, fields=None, **kwargs):
if kwargs and not _PY36:
raise TypeError("Keyword syntax for NamedTuple is only supported"
" in Python 3.6+")
if fields is None:
fields = kwargs.items()
elif kwargs:
raise TypeError("Either list of fields or keywords"
" can be provided to NamedTuple, not both")
return _make_nmtuple(typename, fields)
def NewType(name, tp):
"""NewType creates simple unique types with almost zero
runtime overhead. NewType(name, tp) is considered a subtype of tp
by static type checkers. At runtime, NewType(name, tp) returns
a dummy function that simply returns its argument. Usage::
UserId = NewType('UserId', int)
def name_by_id(user_id: UserId) -> str:
...
UserId('user') # Fails type check
name_by_id(42) # Fails type check
name_by_id(UserId(42)) # OK
num = UserId(5) + 1 # type: int
"""
def new_type(x):
return x
new_type.__name__ = name
new_type.__supertype__ = tp
return new_type
# Python-version-specific alias (Python 2: unicode; Python 3: str)
Text = str
# Constant that's True when type checking, but False here.
TYPE_CHECKING = False
class IO(Generic[AnyStr]):
"""Generic base class for TextIO and BinaryIO.
This is an abstract, generic version of the return of open().
NOTE: This does not distinguish between the different possible
classes (text vs. binary, read vs. write vs. read/write,
append-only, unbuffered). The TextIO and BinaryIO subclasses
below capture the distinctions between text vs. binary, which is
pervasive in the interface; however we currently do not offer a
way to track the other distinctions in the type system.
"""
__slots__ = ()
@abstractproperty
def mode(self) -> str:
pass
@abstractproperty
def name(self) -> str:
pass
@abstractmethod
def close(self) -> None:
pass
@abstractmethod
def closed(self) -> bool:
pass
@abstractmethod
def fileno(self) -> int:
pass
@abstractmethod
def flush(self) -> None:
pass
@abstractmethod
def isatty(self) -> bool:
pass
@abstractmethod
def read(self, n: int = -1) -> AnyStr:
pass
@abstractmethod
def readable(self) -> bool:
pass
@abstractmethod
def readline(self, limit: int = -1) -> AnyStr:
pass
@abstractmethod
def readlines(self, hint: int = -1) -> List[AnyStr]:
pass
@abstractmethod
def seek(self, offset: int, whence: int = 0) -> int:
pass
@abstractmethod
def seekable(self) -> bool:
pass
@abstractmethod
def tell(self) -> int:
pass
@abstractmethod
def truncate(self, size: int = None) -> int:
pass
@abstractmethod
def writable(self) -> bool:
pass
@abstractmethod
def write(self, s: AnyStr) -> int:
pass
@abstractmethod
def writelines(self, lines: List[AnyStr]) -> None:
pass
@abstractmethod
def __enter__(self) -> 'IO[AnyStr]':
pass
@abstractmethod
def __exit__(self, type, value, traceback) -> None:
pass
class BinaryIO(IO[bytes]):
"""Typed version of the return of open() in binary mode."""
__slots__ = ()
@abstractmethod
def write(self, s: Union[bytes, bytearray]) -> int:
pass
@abstractmethod
def __enter__(self) -> 'BinaryIO':
pass
class TextIO(IO[str]):
"""Typed version of the return of open() in text mode."""
__slots__ = ()
@abstractproperty
def buffer(self) -> BinaryIO:
pass
@abstractproperty
def encoding(self) -> str:
pass
@abstractproperty
def errors(self) -> Optional[str]:
pass
@abstractproperty
def line_buffering(self) -> bool:
pass
@abstractproperty
def newlines(self) -> Any:
pass
@abstractmethod
def __enter__(self) -> 'TextIO':
pass
class io:
"""Wrapper namespace for IO generic classes."""
__all__ = ['IO', 'TextIO', 'BinaryIO']
IO = IO
TextIO = TextIO
BinaryIO = BinaryIO
io.__name__ = __name__ + '.io'
sys.modules[io.__name__] = io
Pattern = _TypeAlias('Pattern', AnyStr, type(stdlib_re.compile('')),
lambda p: p.pattern)
Match = _TypeAlias('Match', AnyStr, type(stdlib_re.match('', '')),
lambda m: m.re.pattern)
class re:
"""Wrapper namespace for re type aliases."""
__all__ = ['Pattern', 'Match']
Pattern = Pattern
Match = Match
re.__name__ = __name__ + '.re'
sys.modules[re.__name__] = re
| 80,274 | 2,413 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/__init__.py | """Core XML support for Python.
This package contains four sub-packages:
dom -- The W3C Document Object Model. This supports DOM Level 1 +
Namespaces.
parsers -- Python wrappers for XML parsers (currently only supports Expat).
sax -- The Simple API for XML, developed by XML-Dev, led by David
Megginson and ported to Python by Lars Marius Garshol. This
supports the SAX 2 API.
etree -- The ElementTree XML library. This is a subset of the full
ElementTree XML release.
"""
__all__ = ["dom", "parsers", "sax", "etree"]
| 558 | 22 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/parsers/expat.py | """Interface to the Expat non-validating XML parser."""
__all__ = [
'EXPAT_VERSION',
'ErrorString',
'ExpatError',
'ParserCreate',
'XMLParserType',
'XML_PARAM_ENTITY_PARSING_ALWAYS',
'XML_PARAM_ENTITY_PARSING_NEVER',
'XML_PARAM_ENTITY_PARSING_UNLESS_STANDALONE',
'error',
'errors',
'expat_CAPI',
'features',
'model',
'native_encoding',
'sys',
'version_info',
]
import sys
from pyexpat import EXPAT_VERSION, ErrorString, ExpatError, ParserCreate, XMLParserType, XML_PARAM_ENTITY_PARSING_ALWAYS, XML_PARAM_ENTITY_PARSING_NEVER, XML_PARAM_ENTITY_PARSING_UNLESS_STANDALONE, error, errors, expat_CAPI, features, model, native_encoding, version_info
# provide pyexpat submodules as xml.parsers.expat submodules
sys.modules['xml.parsers.expat.model'] = model
sys.modules['xml.parsers.expat.errors'] = errors
| 868 | 29 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/parsers/__init__.py | """Python interfaces to XML parsers.
This package contains one module:
expat -- Python wrapper for James Clark's Expat parser, with namespace
support.
"""
| 167 | 9 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/sax/xmlreader.py | """An XML Reader is the SAX 2 name for an XML parser. XML Parsers
should be based on this code. """
from . import handler
from ._exceptions import SAXNotSupportedException, SAXNotRecognizedException
# ===== XMLREADER =====
class XMLReader:
"""Interface for reading an XML document using callbacks.
XMLReader is the interface that an XML parser's SAX2 driver must
implement. This interface allows an application to set and query
features and properties in the parser, to register event handlers
for document processing, and to initiate a document parse.
All SAX interfaces are assumed to be synchronous: the parse
methods must not return until parsing is complete, and readers
must wait for an event-handler callback to return before reporting
the next event."""
def __init__(self):
self._cont_handler = handler.ContentHandler()
self._dtd_handler = handler.DTDHandler()
self._ent_handler = handler.EntityResolver()
self._err_handler = handler.ErrorHandler()
def parse(self, source):
"Parse an XML document from a system identifier or an InputSource."
raise NotImplementedError("This method must be implemented!")
def getContentHandler(self):
"Returns the current ContentHandler."
return self._cont_handler
def setContentHandler(self, handler):
"Registers a new object to receive document content events."
self._cont_handler = handler
def getDTDHandler(self):
"Returns the current DTD handler."
return self._dtd_handler
def setDTDHandler(self, handler):
"Register an object to receive basic DTD-related events."
self._dtd_handler = handler
def getEntityResolver(self):
"Returns the current EntityResolver."
return self._ent_handler
def setEntityResolver(self, resolver):
"Register an object to resolve external entities."
self._ent_handler = resolver
def getErrorHandler(self):
"Returns the current ErrorHandler."
return self._err_handler
def setErrorHandler(self, handler):
"Register an object to receive error-message events."
self._err_handler = handler
def setLocale(self, locale):
"""Allow an application to set the locale for errors and warnings.
SAX parsers are not required to provide localization for errors
and warnings; if they cannot support the requested locale,
however, they must raise a SAX exception. Applications may
request a locale change in the middle of a parse."""
raise SAXNotSupportedException("Locale support not implemented")
def getFeature(self, name):
"Looks up and returns the state of a SAX2 feature."
raise SAXNotRecognizedException("Feature '%s' not recognized" % name)
def setFeature(self, name, state):
"Sets the state of a SAX2 feature."
raise SAXNotRecognizedException("Feature '%s' not recognized" % name)
def getProperty(self, name):
"Looks up and returns the value of a SAX2 property."
raise SAXNotRecognizedException("Property '%s' not recognized" % name)
def setProperty(self, name, value):
"Sets the value of a SAX2 property."
raise SAXNotRecognizedException("Property '%s' not recognized" % name)
class IncrementalParser(XMLReader):
"""This interface adds three extra methods to the XMLReader
interface that allow XML parsers to support incremental
parsing. Support for this interface is optional, since not all
underlying XML parsers support this functionality.
When the parser is instantiated it is ready to begin accepting
data from the feed method immediately. After parsing has been
finished with a call to close the reset method must be called to
make the parser ready to accept new data, either from feed or
using the parse method.
Note that these methods must _not_ be called during parsing, that
is, after parse has been called and before it returns.
By default, the class also implements the parse method of the XMLReader
interface using the feed, close and reset methods of the
IncrementalParser interface as a convenience to SAX 2.0 driver
writers."""
def __init__(self, bufsize=2**16):
self._bufsize = bufsize
XMLReader.__init__(self)
def parse(self, source):
from . import saxutils
source = saxutils.prepare_input_source(source)
self.prepareParser(source)
file = source.getCharacterStream()
if file is None:
file = source.getByteStream()
buffer = file.read(self._bufsize)
while buffer:
self.feed(buffer)
buffer = file.read(self._bufsize)
self.close()
def feed(self, data):
"""This method gives the raw XML data in the data parameter to
the parser and makes it parse the data, emitting the
corresponding events. It is allowed for XML constructs to be
split across several calls to feed.
feed may raise SAXException."""
raise NotImplementedError("This method must be implemented!")
def prepareParser(self, source):
"""This method is called by the parse implementation to allow
the SAX 2.0 driver to prepare itself for parsing."""
raise NotImplementedError("prepareParser must be overridden!")
def close(self):
"""This method is called when the entire XML document has been
passed to the parser through the feed method, to notify the
parser that there are no more data. This allows the parser to
do the final checks on the document and empty the internal
data buffer.
The parser will not be ready to parse another document until
the reset method has been called.
close may raise SAXException."""
raise NotImplementedError("This method must be implemented!")
def reset(self):
"""This method is called after close has been called to reset
the parser so that it is ready to parse new documents. The
results of calling parse or feed after close without calling
reset are undefined."""
raise NotImplementedError("This method must be implemented!")
# ===== LOCATOR =====
class Locator:
"""Interface for associating a SAX event with a document
location. A locator object will return valid results only during
calls to DocumentHandler methods; at any other time, the
results are unpredictable."""
def getColumnNumber(self):
"Return the column number where the current event ends."
return -1
def getLineNumber(self):
"Return the line number where the current event ends."
return -1
def getPublicId(self):
"Return the public identifier for the current event."
return None
def getSystemId(self):
"Return the system identifier for the current event."
return None
# ===== INPUTSOURCE =====
class InputSource:
"""Encapsulation of the information needed by the XMLReader to
read entities.
This class may include information about the public identifier,
system identifier, byte stream (possibly with character encoding
information) and/or the character stream of an entity.
Applications will create objects of this class for use in the
XMLReader.parse method and for returning from
EntityResolver.resolveEntity.
An InputSource belongs to the application, the XMLReader is not
allowed to modify InputSource objects passed to it from the
application, although it may make copies and modify those."""
def __init__(self, system_id = None):
self.__system_id = system_id
self.__public_id = None
self.__encoding = None
self.__bytefile = None
self.__charfile = None
def setPublicId(self, public_id):
"Sets the public identifier of this InputSource."
self.__public_id = public_id
def getPublicId(self):
"Returns the public identifier of this InputSource."
return self.__public_id
def setSystemId(self, system_id):
"Sets the system identifier of this InputSource."
self.__system_id = system_id
def getSystemId(self):
"Returns the system identifier of this InputSource."
return self.__system_id
def setEncoding(self, encoding):
"""Sets the character encoding of this InputSource.
The encoding must be a string acceptable for an XML encoding
declaration (see section 4.3.3 of the XML recommendation).
The encoding attribute of the InputSource is ignored if the
InputSource also contains a character stream."""
self.__encoding = encoding
def getEncoding(self):
"Get the character encoding of this InputSource."
return self.__encoding
def setByteStream(self, bytefile):
"""Set the byte stream (a Python file-like object which does
not perform byte-to-character conversion) for this input
source.
The SAX parser will ignore this if there is also a character
stream specified, but it will use a byte stream in preference
to opening a URI connection itself.
If the application knows the character encoding of the byte
stream, it should set it with the setEncoding method."""
self.__bytefile = bytefile
def getByteStream(self):
"""Get the byte stream for this input source.
The getEncoding method will return the character encoding for
this byte stream, or None if unknown."""
return self.__bytefile
def setCharacterStream(self, charfile):
"""Set the character stream for this input source. (The stream
must be a Python 2.0 Unicode-wrapped file-like that performs
conversion to Unicode strings.)
If there is a character stream specified, the SAX parser will
ignore any byte stream and will not attempt to open a URI
connection to the system identifier."""
self.__charfile = charfile
def getCharacterStream(self):
"Get the character stream for this input source."
return self.__charfile
# ===== ATTRIBUTESIMPL =====
class AttributesImpl:
def __init__(self, attrs):
"""Non-NS-aware implementation.
attrs should be of the form {name : value}."""
self._attrs = attrs
def getLength(self):
return len(self._attrs)
def getType(self, name):
return "CDATA"
def getValue(self, name):
return self._attrs[name]
def getValueByQName(self, name):
return self._attrs[name]
def getNameByQName(self, name):
if name not in self._attrs:
raise KeyError(name)
return name
def getQNameByName(self, name):
if name not in self._attrs:
raise KeyError(name)
return name
def getNames(self):
return list(self._attrs.keys())
def getQNames(self):
return list(self._attrs.keys())
def __len__(self):
return len(self._attrs)
def __getitem__(self, name):
return self._attrs[name]
def keys(self):
return list(self._attrs.keys())
def __contains__(self, name):
return name in self._attrs
def get(self, name, alternative=None):
return self._attrs.get(name, alternative)
def copy(self):
return self.__class__(self._attrs)
def items(self):
return list(self._attrs.items())
def values(self):
return list(self._attrs.values())
# ===== ATTRIBUTESNSIMPL =====
class AttributesNSImpl(AttributesImpl):
def __init__(self, attrs, qnames):
"""NS-aware implementation.
attrs should be of the form {(ns_uri, lname): value, ...}.
qnames of the form {(ns_uri, lname): qname, ...}."""
self._attrs = attrs
self._qnames = qnames
def getValueByQName(self, name):
for (nsname, qname) in self._qnames.items():
if qname == name:
return self._attrs[nsname]
raise KeyError(name)
def getNameByQName(self, name):
for (nsname, qname) in self._qnames.items():
if qname == name:
return nsname
raise KeyError(name)
def getQNameByName(self, name):
return self._qnames[name]
def getQNames(self):
return list(self._qnames.values())
def copy(self):
return self.__class__(self._attrs, self._qnames)
def _test():
XMLReader()
IncrementalParser()
Locator()
if __name__ == "__main__":
_test()
| 12,684 | 381 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/sax/handler.py | """
This module contains the core classes of version 2.0 of SAX for Python.
This file provides only default classes with absolutely minimum
functionality, from which drivers and applications can be subclassed.
Many of these classes are empty and are included only as documentation
of the interfaces.
$Id$
"""
version = '2.0beta'
#============================================================================
#
# HANDLER INTERFACES
#
#============================================================================
# ===== ERRORHANDLER =====
class ErrorHandler:
"""Basic interface for SAX error handlers.
If you create an object that implements this interface, then
register the object with your XMLReader, the parser will call the
methods in your object to report all warnings and errors. There
are three levels of errors available: warnings, (possibly)
recoverable errors, and unrecoverable errors. All methods take a
SAXParseException as the only parameter."""
def error(self, exception):
"Handle a recoverable error."
raise exception
def fatalError(self, exception):
"Handle a non-recoverable error."
raise exception
def warning(self, exception):
"Handle a warning."
print(exception)
# ===== CONTENTHANDLER =====
class ContentHandler:
"""Interface for receiving logical document content events.
This is the main callback interface in SAX, and the one most
important to applications. The order of events in this interface
mirrors the order of the information in the document."""
def __init__(self):
self._locator = None
def setDocumentLocator(self, locator):
"""Called by the parser to give the application a locator for
locating the origin of document events.
SAX parsers are strongly encouraged (though not absolutely
required) to supply a locator: if it does so, it must supply
the locator to the application by invoking this method before
invoking any of the other methods in the DocumentHandler
interface.
The locator allows the application to determine the end
position of any document-related event, even if the parser is
not reporting an error. Typically, the application will use
this information for reporting its own errors (such as
character content that does not match an application's
business rules). The information returned by the locator is
probably not sufficient for use with a search engine.
Note that the locator will return correct information only
during the invocation of the events in this interface. The
application should not attempt to use it at any other time."""
self._locator = locator
def startDocument(self):
"""Receive notification of the beginning of a document.
The SAX parser will invoke this method only once, before any
other methods in this interface or in DTDHandler (except for
setDocumentLocator)."""
def endDocument(self):
"""Receive notification of the end of a document.
The SAX parser will invoke this method only once, and it will
be the last method invoked during the parse. The parser shall
not invoke this method until it has either abandoned parsing
(because of an unrecoverable error) or reached the end of
input."""
def startPrefixMapping(self, prefix, uri):
"""Begin the scope of a prefix-URI Namespace mapping.
The information from this event is not necessary for normal
Namespace processing: the SAX XML reader will automatically
replace prefixes for element and attribute names when the
http://xml.org/sax/features/namespaces feature is true (the
default).
There are cases, however, when applications need to use
prefixes in character data or in attribute values, where they
cannot safely be expanded automatically; the
start/endPrefixMapping event supplies the information to the
application to expand prefixes in those contexts itself, if
necessary.
Note that start/endPrefixMapping events are not guaranteed to
be properly nested relative to each-other: all
startPrefixMapping events will occur before the corresponding
startElement event, and all endPrefixMapping events will occur
after the corresponding endElement event, but their order is
not guaranteed."""
def endPrefixMapping(self, prefix):
"""End the scope of a prefix-URI mapping.
See startPrefixMapping for details. This event will always
occur after the corresponding endElement event, but the order
of endPrefixMapping events is not otherwise guaranteed."""
def startElement(self, name, attrs):
"""Signals the start of an element in non-namespace mode.
The name parameter contains the raw XML 1.0 name of the
element type as a string and the attrs parameter holds an
instance of the Attributes class containing the attributes of
the element."""
def endElement(self, name):
"""Signals the end of an element in non-namespace mode.
The name parameter contains the name of the element type, just
as with the startElement event."""
def startElementNS(self, name, qname, attrs):
"""Signals the start of an element in namespace mode.
The name parameter contains the name of the element type as a
(uri, localname) tuple, the qname parameter the raw XML 1.0
name used in the source document, and the attrs parameter
holds an instance of the Attributes class containing the
attributes of the element.
The uri part of the name tuple is None for elements which have
no namespace."""
def endElementNS(self, name, qname):
"""Signals the end of an element in namespace mode.
The name parameter contains the name of the element type, just
as with the startElementNS event."""
def characters(self, content):
"""Receive notification of character data.
The Parser will call this method to report each chunk of
character data. SAX parsers may return all contiguous
character data in a single chunk, or they may split it into
several chunks; however, all of the characters in any single
event must come from the same external entity so that the
Locator provides useful information."""
def ignorableWhitespace(self, whitespace):
"""Receive notification of ignorable whitespace in element content.
Validating Parsers must use this method to report each chunk
of ignorable whitespace (see the W3C XML 1.0 recommendation,
section 2.10): non-validating parsers may also use this method
if they are capable of parsing and using content models.
SAX parsers may return all contiguous whitespace in a single
chunk, or they may split it into several chunks; however, all
of the characters in any single event must come from the same
external entity, so that the Locator provides useful
information."""
def processingInstruction(self, target, data):
"""Receive notification of a processing instruction.
The Parser will invoke this method once for each processing
instruction found: note that processing instructions may occur
before or after the main document element.
A SAX parser should never report an XML declaration (XML 1.0,
section 2.8) or a text declaration (XML 1.0, section 4.3.1)
using this method."""
def skippedEntity(self, name):
"""Receive notification of a skipped entity.
The Parser will invoke this method once for each entity
skipped. Non-validating processors may skip entities if they
have not seen the declarations (because, for example, the
entity was declared in an external DTD subset). All processors
may skip external entities, depending on the values of the
http://xml.org/sax/features/external-general-entities and the
http://xml.org/sax/features/external-parameter-entities
properties."""
# ===== DTDHandler =====
class DTDHandler:
"""Handle DTD events.
This interface specifies only those DTD events required for basic
parsing (unparsed entities and attributes)."""
def notationDecl(self, name, publicId, systemId):
"Handle a notation declaration event."
def unparsedEntityDecl(self, name, publicId, systemId, ndata):
"Handle an unparsed entity declaration event."
# ===== ENTITYRESOLVER =====
class EntityResolver:
"""Basic interface for resolving entities. If you create an object
implementing this interface, then register the object with your
Parser, the parser will call the method in your object to
resolve all external entities. Note that DefaultHandler implements
this interface with the default behaviour."""
def resolveEntity(self, publicId, systemId):
"""Resolve the system identifier of an entity and return either
the system identifier to read from as a string, or an InputSource
to read from."""
return systemId
#============================================================================
#
# CORE FEATURES
#
#============================================================================
feature_namespaces = "http://xml.org/sax/features/namespaces"
# true: Perform Namespace processing (default).
# false: Optionally do not perform Namespace processing
# (implies namespace-prefixes).
# access: (parsing) read-only; (not parsing) read/write
feature_namespace_prefixes = "http://xml.org/sax/features/namespace-prefixes"
# true: Report the original prefixed names and attributes used for Namespace
# declarations.
# false: Do not report attributes used for Namespace declarations, and
# optionally do not report original prefixed names (default).
# access: (parsing) read-only; (not parsing) read/write
feature_string_interning = "http://xml.org/sax/features/string-interning"
# true: All element names, prefixes, attribute names, Namespace URIs, and
# local names are interned using the built-in intern function.
# false: Names are not necessarily interned, although they may be (default).
# access: (parsing) read-only; (not parsing) read/write
feature_validation = "http://xml.org/sax/features/validation"
# true: Report all validation errors (implies external-general-entities and
# external-parameter-entities).
# false: Do not report validation errors.
# access: (parsing) read-only; (not parsing) read/write
feature_external_ges = "http://xml.org/sax/features/external-general-entities"
# true: Include all external general (text) entities.
# false: Do not include external general entities.
# access: (parsing) read-only; (not parsing) read/write
feature_external_pes = "http://xml.org/sax/features/external-parameter-entities"
# true: Include all external parameter entities, including the external
# DTD subset.
# false: Do not include any external parameter entities, even the external
# DTD subset.
# access: (parsing) read-only; (not parsing) read/write
all_features = [feature_namespaces,
feature_namespace_prefixes,
feature_string_interning,
feature_validation,
feature_external_ges,
feature_external_pes]
#============================================================================
#
# CORE PROPERTIES
#
#============================================================================
property_lexical_handler = "http://xml.org/sax/properties/lexical-handler"
# data type: xml.sax.sax2lib.LexicalHandler
# description: An optional extension handler for lexical events like comments.
# access: read/write
property_declaration_handler = "http://xml.org/sax/properties/declaration-handler"
# data type: xml.sax.sax2lib.DeclHandler
# description: An optional extension handler for DTD-related events other
# than notations and unparsed entities.
# access: read/write
property_dom_node = "http://xml.org/sax/properties/dom-node"
# data type: org.w3c.dom.Node
# description: When parsing, the current DOM node being visited if this is
# a DOM iterator; when not parsing, the root DOM node for
# iteration.
# access: (parsing) read-only; (not parsing) read/write
property_xml_string = "http://xml.org/sax/properties/xml-string"
# data type: String
# description: The literal string of characters that was the source for
# the current event.
# access: read-only
property_encoding = "http://www.python.org/sax/properties/encoding"
# data type: String
# description: The name of the encoding to assume for input data.
# access: write: set the encoding, e.g. established by a higher-level
# protocol. May change during parsing (e.g. after
# processing a META tag)
# read: return the current encoding (possibly established through
# auto-detection.
# initial value: UTF-8
#
property_interning_dict = "http://www.python.org/sax/properties/interning-dict"
# data type: Dictionary
# description: The dictionary used to intern common strings in the document
# access: write: Request that the parser uses a specific dictionary, to
# allow interning across different documents
# read: return the current interning dictionary, or None
#
all_properties = [property_lexical_handler,
property_dom_node,
property_declaration_handler,
property_xml_string,
property_encoding,
property_interning_dict]
| 13,922 | 343 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/sax/saxutils.py | """\
A library of useful helper classes to the SAX classes, for the
convenience of application and driver writers.
"""
import os, urllib.parse, urllib.request
import io
import codecs
from . import handler
from . import xmlreader
def __dict_replace(s, d):
"""Replace substrings of a string using a dictionary."""
for key, value in d.items():
s = s.replace(key, value)
return s
def escape(data, entities={}):
"""Escape &, <, and > in a string of data.
You can escape other strings of data by passing a dictionary as
the optional entities parameter. The keys and values must all be
strings; each key will be replaced with its corresponding value.
"""
# must do ampersand first
data = data.replace("&", "&")
data = data.replace(">", ">")
data = data.replace("<", "<")
if entities:
data = __dict_replace(data, entities)
return data
def unescape(data, entities={}):
"""Unescape &, <, and > in a string of data.
You can unescape other strings of data by passing a dictionary as
the optional entities parameter. The keys and values must all be
strings; each key will be replaced with its corresponding value.
"""
data = data.replace("<", "<")
data = data.replace(">", ">")
if entities:
data = __dict_replace(data, entities)
# must do ampersand last
return data.replace("&", "&")
def quoteattr(data, entities={}):
"""Escape and quote an attribute value.
Escape &, <, and > in a string of data, then quote it for use as
an attribute value. The \" character will be escaped as well, if
necessary.
You can escape other strings of data by passing a dictionary as
the optional entities parameter. The keys and values must all be
strings; each key will be replaced with its corresponding value.
"""
entities = entities.copy()
entities.update({'\n': ' ', '\r': ' ', '\t':'	'})
data = escape(data, entities)
if '"' in data:
if "'" in data:
data = '"%s"' % data.replace('"', """)
else:
data = "'%s'" % data
else:
data = '"%s"' % data
return data
def _gettextwriter(out, encoding):
if out is None:
import sys
return sys.stdout
if isinstance(out, io.TextIOBase):
# use a text writer as is
return out
if isinstance(out, (codecs.StreamWriter, codecs.StreamReaderWriter)):
# use a codecs stream writer as is
return out
# wrap a binary writer with TextIOWrapper
if isinstance(out, io.RawIOBase):
# Keep the original file open when the TextIOWrapper is
# destroyed
class _wrapper:
__class__ = out.__class__
def __getattr__(self, name):
return getattr(out, name)
buffer = _wrapper()
buffer.close = lambda: None
else:
# This is to handle passed objects that aren't in the
# IOBase hierarchy, but just have a write method
buffer = io.BufferedIOBase()
buffer.writable = lambda: True
buffer.write = out.write
try:
# TextIOWrapper uses this methods to determine
# if BOM (for UTF-16, etc) should be added
buffer.seekable = out.seekable
buffer.tell = out.tell
except AttributeError:
pass
return io.TextIOWrapper(buffer, encoding=encoding,
errors='xmlcharrefreplace',
newline='\n',
write_through=True)
class XMLGenerator(handler.ContentHandler):
def __init__(self, out=None, encoding="iso-8859-1", short_empty_elements=False):
handler.ContentHandler.__init__(self)
out = _gettextwriter(out, encoding)
self._write = out.write
self._flush = out.flush
self._ns_contexts = [{}] # contains uri -> prefix dicts
self._current_context = self._ns_contexts[-1]
self._undeclared_ns_maps = []
self._encoding = encoding
self._short_empty_elements = short_empty_elements
self._pending_start_element = False
def _qname(self, name):
"""Builds a qualified name from a (ns_url, localname) pair"""
if name[0]:
# Per http://www.w3.org/XML/1998/namespace, The 'xml' prefix is
# bound by definition to http://www.w3.org/XML/1998/namespace. It
# does not need to be declared and will not usually be found in
# self._current_context.
if 'http://www.w3.org/XML/1998/namespace' == name[0]:
return 'xml:' + name[1]
# The name is in a non-empty namespace
prefix = self._current_context[name[0]]
if prefix:
# If it is not the default namespace, prepend the prefix
return prefix + ":" + name[1]
# Return the unqualified name
return name[1]
def _finish_pending_start_element(self,endElement=False):
if self._pending_start_element:
self._write('>')
self._pending_start_element = False
# ContentHandler methods
def startDocument(self):
self._write('<?xml version="1.0" encoding="%s"?>\n' %
self._encoding)
def endDocument(self):
self._flush()
def startPrefixMapping(self, prefix, uri):
self._ns_contexts.append(self._current_context.copy())
self._current_context[uri] = prefix
self._undeclared_ns_maps.append((prefix, uri))
def endPrefixMapping(self, prefix):
self._current_context = self._ns_contexts[-1]
del self._ns_contexts[-1]
def startElement(self, name, attrs):
self._finish_pending_start_element()
self._write('<' + name)
for (name, value) in attrs.items():
self._write(' %s=%s' % (name, quoteattr(value)))
if self._short_empty_elements:
self._pending_start_element = True
else:
self._write(">")
def endElement(self, name):
if self._pending_start_element:
self._write('/>')
self._pending_start_element = False
else:
self._write('</%s>' % name)
def startElementNS(self, name, qname, attrs):
self._finish_pending_start_element()
self._write('<' + self._qname(name))
for prefix, uri in self._undeclared_ns_maps:
if prefix:
self._write(' xmlns:%s="%s"' % (prefix, uri))
else:
self._write(' xmlns="%s"' % uri)
self._undeclared_ns_maps = []
for (name, value) in attrs.items():
self._write(' %s=%s' % (self._qname(name), quoteattr(value)))
if self._short_empty_elements:
self._pending_start_element = True
else:
self._write(">")
def endElementNS(self, name, qname):
if self._pending_start_element:
self._write('/>')
self._pending_start_element = False
else:
self._write('</%s>' % self._qname(name))
def characters(self, content):
if content:
self._finish_pending_start_element()
if not isinstance(content, str):
content = str(content, self._encoding)
self._write(escape(content))
def ignorableWhitespace(self, content):
if content:
self._finish_pending_start_element()
if not isinstance(content, str):
content = str(content, self._encoding)
self._write(content)
def processingInstruction(self, target, data):
self._finish_pending_start_element()
self._write('<?%s %s?>' % (target, data))
class XMLFilterBase(xmlreader.XMLReader):
"""This class is designed to sit between an XMLReader and the
client application's event handlers. By default, it does nothing
but pass requests up to the reader and events on to the handlers
unmodified, but subclasses can override specific methods to modify
the event stream or the configuration requests as they pass
through."""
def __init__(self, parent = None):
xmlreader.XMLReader.__init__(self)
self._parent = parent
# ErrorHandler methods
def error(self, exception):
self._err_handler.error(exception)
def fatalError(self, exception):
self._err_handler.fatalError(exception)
def warning(self, exception):
self._err_handler.warning(exception)
# ContentHandler methods
def setDocumentLocator(self, locator):
self._cont_handler.setDocumentLocator(locator)
def startDocument(self):
self._cont_handler.startDocument()
def endDocument(self):
self._cont_handler.endDocument()
def startPrefixMapping(self, prefix, uri):
self._cont_handler.startPrefixMapping(prefix, uri)
def endPrefixMapping(self, prefix):
self._cont_handler.endPrefixMapping(prefix)
def startElement(self, name, attrs):
self._cont_handler.startElement(name, attrs)
def endElement(self, name):
self._cont_handler.endElement(name)
def startElementNS(self, name, qname, attrs):
self._cont_handler.startElementNS(name, qname, attrs)
def endElementNS(self, name, qname):
self._cont_handler.endElementNS(name, qname)
def characters(self, content):
self._cont_handler.characters(content)
def ignorableWhitespace(self, chars):
self._cont_handler.ignorableWhitespace(chars)
def processingInstruction(self, target, data):
self._cont_handler.processingInstruction(target, data)
def skippedEntity(self, name):
self._cont_handler.skippedEntity(name)
# DTDHandler methods
def notationDecl(self, name, publicId, systemId):
self._dtd_handler.notationDecl(name, publicId, systemId)
def unparsedEntityDecl(self, name, publicId, systemId, ndata):
self._dtd_handler.unparsedEntityDecl(name, publicId, systemId, ndata)
# EntityResolver methods
def resolveEntity(self, publicId, systemId):
return self._ent_handler.resolveEntity(publicId, systemId)
# XMLReader methods
def parse(self, source):
self._parent.setContentHandler(self)
self._parent.setErrorHandler(self)
self._parent.setEntityResolver(self)
self._parent.setDTDHandler(self)
self._parent.parse(source)
def setLocale(self, locale):
self._parent.setLocale(locale)
def getFeature(self, name):
return self._parent.getFeature(name)
def setFeature(self, name, state):
self._parent.setFeature(name, state)
def getProperty(self, name):
return self._parent.getProperty(name)
def setProperty(self, name, value):
self._parent.setProperty(name, value)
# XMLFilter methods
def getParent(self):
return self._parent
def setParent(self, parent):
self._parent = parent
# --- Utility functions
def prepare_input_source(source, base=""):
"""This function takes an InputSource and an optional base URL and
returns a fully resolved InputSource object ready for reading."""
if isinstance(source, str):
source = xmlreader.InputSource(source)
elif hasattr(source, "read"):
f = source
source = xmlreader.InputSource()
if isinstance(f.read(0), str):
source.setCharacterStream(f)
else:
source.setByteStream(f)
if hasattr(f, "name") and isinstance(f.name, str):
source.setSystemId(f.name)
if source.getCharacterStream() is None and source.getByteStream() is None:
sysid = source.getSystemId()
basehead = os.path.dirname(os.path.normpath(base))
sysidfilename = os.path.join(basehead, sysid)
if os.path.isfile(sysidfilename):
source.setSystemId(sysidfilename)
f = open(sysidfilename, "rb")
else:
source.setSystemId(urllib.parse.urljoin(base, sysid))
f = urllib.request.urlopen(source.getSystemId())
source.setByteStream(f)
return source
| 12,205 | 369 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/sax/_exceptions.py | """Different kinds of SAX Exceptions"""
# ===== SAXEXCEPTION =====
class SAXException(Exception):
"""Encapsulate an XML error or warning. This class can contain
basic error or warning information from either the XML parser or
the application: you can subclass it to provide additional
functionality, or to add localization. Note that although you will
receive a SAXException as the argument to the handlers in the
ErrorHandler interface, you are not actually required to raise
the exception; instead, you can simply read the information in
it."""
def __init__(self, msg, exception=None):
"""Creates an exception. The message is required, but the exception
is optional."""
self._msg = msg
self._exception = exception
Exception.__init__(self, msg)
def getMessage(self):
"Return a message for this exception."
return self._msg
def getException(self):
"Return the embedded exception, or None if there was none."
return self._exception
def __str__(self):
"Create a string representation of the exception."
return self._msg
def __getitem__(self, ix):
"""Avoids weird error messages if someone does exception[ix] by
mistake, since Exception has __getitem__ defined."""
raise AttributeError("__getitem__")
# ===== SAXPARSEEXCEPTION =====
class SAXParseException(SAXException):
"""Encapsulate an XML parse error or warning.
This exception will include information for locating the error in
the original XML document. Note that although the application will
receive a SAXParseException as the argument to the handlers in the
ErrorHandler interface, the application is not actually required
to raise the exception; instead, it can simply read the
information in it and take a different action.
Since this exception is a subclass of SAXException, it inherits
the ability to wrap another exception."""
def __init__(self, msg, exception, locator):
"Creates the exception. The exception parameter is allowed to be None."
SAXException.__init__(self, msg, exception)
self._locator = locator
# We need to cache this stuff at construction time.
# If this exception is raised, the objects through which we must
# traverse to get this information may be deleted by the time
# it gets caught.
self._systemId = self._locator.getSystemId()
self._colnum = self._locator.getColumnNumber()
self._linenum = self._locator.getLineNumber()
def getColumnNumber(self):
"""The column number of the end of the text where the exception
occurred."""
return self._colnum
def getLineNumber(self):
"The line number of the end of the text where the exception occurred."
return self._linenum
def getPublicId(self):
"Get the public identifier of the entity where the exception occurred."
return self._locator.getPublicId()
def getSystemId(self):
"Get the system identifier of the entity where the exception occurred."
return self._systemId
def __str__(self):
"Create a string representation of the exception."
sysid = self.getSystemId()
if sysid is None:
sysid = "<unknown>"
linenum = self.getLineNumber()
if linenum is None:
linenum = "?"
colnum = self.getColumnNumber()
if colnum is None:
colnum = "?"
return "%s:%s:%s: %s" % (sysid, linenum, colnum, self._msg)
# ===== SAXNOTRECOGNIZEDEXCEPTION =====
class SAXNotRecognizedException(SAXException):
"""Exception class for an unrecognized identifier.
An XMLReader will raise this exception when it is confronted with an
unrecognized feature or property. SAX applications and extensions may
use this class for similar purposes."""
# ===== SAXNOTSUPPORTEDEXCEPTION =====
class SAXNotSupportedException(SAXException):
"""Exception class for an unsupported operation.
An XMLReader will raise this exception when a service it cannot
perform is requested (specifically setting a state or value). SAX
applications and extensions may use this class for similar
purposes."""
# ===== SAXNOTSUPPORTEDEXCEPTION =====
class SAXReaderNotAvailable(SAXNotSupportedException):
"""Exception class for a missing driver.
An XMLReader module (driver) should raise this exception when it
is first imported, e.g. when a support module cannot be imported.
It also may be raised during parsing, e.g. if executing an external
program is not permitted."""
| 4,699 | 128 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/sax/__init__.py | """Simple API for XML (SAX) implementation for Python.
This module provides an implementation of the SAX 2 interface;
information about the Java version of the interface can be found at
http://www.megginson.com/SAX/. The Python version of the interface is
documented at <...>.
This package contains the following modules:
handler -- Base classes and constants which define the SAX 2 API for
the 'client-side' of SAX for Python.
saxutils -- Implementation of the convenience classes commonly used to
work with SAX.
xmlreader -- Base classes and constants which define the SAX 2 API for
the parsers used with SAX for Python.
expatreader -- Driver that allows use of the Expat parser with SAX.
"""
from .xmlreader import InputSource
from .handler import ContentHandler, ErrorHandler
from ._exceptions import SAXException, SAXNotRecognizedException, \
SAXParseException, SAXNotSupportedException, \
SAXReaderNotAvailable
if __name__ == 'PYOBJ.COM':
import xml.sax
def parse(source, handler, errorHandler=ErrorHandler()):
parser = make_parser()
parser.setContentHandler(handler)
parser.setErrorHandler(errorHandler)
parser.parse(source)
def parseString(string, handler, errorHandler=ErrorHandler()):
import io
if errorHandler is None:
errorHandler = ErrorHandler()
parser = make_parser()
parser.setContentHandler(handler)
parser.setErrorHandler(errorHandler)
inpsrc = InputSource()
if isinstance(string, str):
inpsrc.setCharacterStream(io.StringIO(string))
else:
inpsrc.setByteStream(io.BytesIO(string))
parser.parse(inpsrc)
# this is the parser list used by the make_parser function if no
# alternatives are given as parameters to the function
default_parser_list = ["xml.sax.expatreader"]
# tell modulefinder that importing sax potentially imports expatreader
_false = 0
if _false:
import xml.sax.expatreader
import os, sys
if not sys.flags.ignore_environment and "PY_SAX_PARSER" in os.environ:
default_parser_list = os.environ["PY_SAX_PARSER"].split(",")
del os
_key = "python.xml.sax.parser"
if sys.platform[:4] == "java" and sys.registry.containsKey(_key):
default_parser_list = sys.registry.getProperty(_key).split(",")
def make_parser(parser_list = []):
"""Creates and returns a SAX parser.
Creates the first parser it is able to instantiate of the ones
given in the list created by doing parser_list +
default_parser_list. The lists must contain the names of Python
modules containing both a SAX parser and a create_parser function."""
for parser_name in parser_list + default_parser_list:
try:
return _create_parser(parser_name)
except ImportError as e:
import sys
if parser_name in sys.modules:
# The parser module was found, but importing it
# failed unexpectedly, pass this exception through
raise
except SAXReaderNotAvailable:
# The parser module detected that it won't work properly,
# so try the next one
pass
raise SAXReaderNotAvailable("No parsers found", None)
# --- Internal utility methods used by make_parser
if sys.platform[ : 4] == "java":
def _create_parser(parser_name):
# from org.python.core import imp
drv_module = imp.importName(parser_name, 0, globals())
return drv_module.create_parser()
else:
def _create_parser(parser_name):
drv_module = __import__(parser_name,{},{},['create_parser'])
return drv_module.create_parser()
del sys
| 3,679 | 110 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/sax/expatreader.py | """
SAX driver for the pyexpat C module. This driver works with
pyexpat.__version__ == '2.22'.
"""
version = "0.20"
from xml.sax._exceptions import *
from xml.sax.handler import feature_validation, feature_namespaces
from xml.sax.handler import feature_namespace_prefixes
from xml.sax.handler import feature_external_ges, feature_external_pes
from xml.sax.handler import feature_string_interning
from xml.sax.handler import property_xml_string, property_interning_dict
# xml.parsers.expat does not raise ImportError in Jython
import sys
if sys.platform[:4] == "java":
raise SAXReaderNotAvailable("expat not available in Java", None)
del sys
try:
from xml.parsers import expat
except ImportError:
raise SAXReaderNotAvailable("expat not supported", None)
else:
if not hasattr(expat, "ParserCreate"):
raise SAXReaderNotAvailable("expat not supported", None)
from xml.sax import xmlreader, saxutils, handler
AttributesImpl = xmlreader.AttributesImpl
AttributesNSImpl = xmlreader.AttributesNSImpl
# If we're using a sufficiently recent version of Python, we can use
# weak references to avoid cycles between the parser and content
# handler, otherwise we'll just have to pretend.
try:
import _weakref
except ImportError:
def _mkproxy(o):
return o
else:
import weakref
_mkproxy = weakref.proxy
del weakref, _weakref
class _ClosedParser:
pass
# --- ExpatLocator
class ExpatLocator(xmlreader.Locator):
"""Locator for use with the ExpatParser class.
This uses a weak reference to the parser object to avoid creating
a circular reference between the parser and the content handler.
"""
def __init__(self, parser):
self._ref = _mkproxy(parser)
def getColumnNumber(self):
parser = self._ref
if parser._parser is None:
return None
return parser._parser.ErrorColumnNumber
def getLineNumber(self):
parser = self._ref
if parser._parser is None:
return 1
return parser._parser.ErrorLineNumber
def getPublicId(self):
parser = self._ref
if parser is None:
return None
return parser._source.getPublicId()
def getSystemId(self):
parser = self._ref
if parser is None:
return None
return parser._source.getSystemId()
# --- ExpatParser
class ExpatParser(xmlreader.IncrementalParser, xmlreader.Locator):
"""SAX driver for the pyexpat C module."""
def __init__(self, namespaceHandling=0, bufsize=2**16-20):
xmlreader.IncrementalParser.__init__(self, bufsize)
self._source = xmlreader.InputSource()
self._parser = None
self._namespaces = namespaceHandling
self._lex_handler_prop = None
self._parsing = 0
self._entity_stack = []
self._external_ges = 0
self._interning = None
# XMLReader methods
def parse(self, source):
"Parse an XML document from a URL or an InputSource."
source = saxutils.prepare_input_source(source)
self._source = source
try:
self.reset()
self._cont_handler.setDocumentLocator(ExpatLocator(self))
xmlreader.IncrementalParser.parse(self, source)
except:
# bpo-30264: Close the source on error to not leak resources:
# xml.sax.parse() doesn't give access to the underlying parser
# to the caller
self._close_source()
raise
def prepareParser(self, source):
if source.getSystemId() is not None:
self._parser.SetBase(source.getSystemId())
# Redefined setContentHandler to allow changing handlers during parsing
def setContentHandler(self, handler):
xmlreader.IncrementalParser.setContentHandler(self, handler)
if self._parsing:
self._reset_cont_handler()
def getFeature(self, name):
if name == feature_namespaces:
return self._namespaces
elif name == feature_string_interning:
return self._interning is not None
elif name in (feature_validation, feature_external_pes,
feature_namespace_prefixes):
return 0
elif name == feature_external_ges:
return self._external_ges
raise SAXNotRecognizedException("Feature '%s' not recognized" % name)
def setFeature(self, name, state):
if self._parsing:
raise SAXNotSupportedException("Cannot set features while parsing")
if name == feature_namespaces:
self._namespaces = state
elif name == feature_external_ges:
self._external_ges = state
elif name == feature_string_interning:
if state:
if self._interning is None:
self._interning = {}
else:
self._interning = None
elif name == feature_validation:
if state:
raise SAXNotSupportedException(
"expat does not support validation")
elif name == feature_external_pes:
if state:
raise SAXNotSupportedException(
"expat does not read external parameter entities")
elif name == feature_namespace_prefixes:
if state:
raise SAXNotSupportedException(
"expat does not report namespace prefixes")
else:
raise SAXNotRecognizedException(
"Feature '%s' not recognized" % name)
def getProperty(self, name):
if name == handler.property_lexical_handler:
return self._lex_handler_prop
elif name == property_interning_dict:
return self._interning
elif name == property_xml_string:
if self._parser:
if hasattr(self._parser, "GetInputContext"):
return self._parser.GetInputContext()
else:
raise SAXNotRecognizedException(
"This version of expat does not support getting"
" the XML string")
else:
raise SAXNotSupportedException(
"XML string cannot be returned when not parsing")
raise SAXNotRecognizedException("Property '%s' not recognized" % name)
def setProperty(self, name, value):
if name == handler.property_lexical_handler:
self._lex_handler_prop = value
if self._parsing:
self._reset_lex_handler_prop()
elif name == property_interning_dict:
self._interning = value
elif name == property_xml_string:
raise SAXNotSupportedException("Property '%s' cannot be set" %
name)
else:
raise SAXNotRecognizedException("Property '%s' not recognized" %
name)
# IncrementalParser methods
def feed(self, data, isFinal = 0):
if not self._parsing:
self.reset()
self._parsing = 1
self._cont_handler.startDocument()
try:
# The isFinal parameter is internal to the expat reader.
# If it is set to true, expat will check validity of the entire
# document. When feeding chunks, they are not normally final -
# except when invoked from close.
self._parser.Parse(data, isFinal)
except expat.error as e:
exc = SAXParseException(expat.ErrorString(e.code), e, self)
# FIXME: when to invoke error()?
self._err_handler.fatalError(exc)
def _close_source(self):
source = self._source
try:
file = source.getCharacterStream()
if file is not None:
file.close()
finally:
file = source.getByteStream()
if file is not None:
file.close()
def close(self):
if (self._entity_stack or self._parser is None or
isinstance(self._parser, _ClosedParser)):
# If we are completing an external entity, do nothing here
return
try:
self.feed("", isFinal = 1)
self._cont_handler.endDocument()
self._parsing = 0
# break cycle created by expat handlers pointing to our methods
self._parser = None
finally:
self._parsing = 0
if self._parser is not None:
# Keep ErrorColumnNumber and ErrorLineNumber after closing.
parser = _ClosedParser()
parser.ErrorColumnNumber = self._parser.ErrorColumnNumber
parser.ErrorLineNumber = self._parser.ErrorLineNumber
self._parser = parser
self._close_source()
def _reset_cont_handler(self):
self._parser.ProcessingInstructionHandler = \
self._cont_handler.processingInstruction
self._parser.CharacterDataHandler = self._cont_handler.characters
def _reset_lex_handler_prop(self):
lex = self._lex_handler_prop
parser = self._parser
if lex is None:
parser.CommentHandler = None
parser.StartCdataSectionHandler = None
parser.EndCdataSectionHandler = None
parser.StartDoctypeDeclHandler = None
parser.EndDoctypeDeclHandler = None
else:
parser.CommentHandler = lex.comment
parser.StartCdataSectionHandler = lex.startCDATA
parser.EndCdataSectionHandler = lex.endCDATA
parser.StartDoctypeDeclHandler = self.start_doctype_decl
parser.EndDoctypeDeclHandler = lex.endDTD
def reset(self):
if self._namespaces:
self._parser = expat.ParserCreate(self._source.getEncoding(), " ",
intern=self._interning)
self._parser.namespace_prefixes = 1
self._parser.StartElementHandler = self.start_element_ns
self._parser.EndElementHandler = self.end_element_ns
else:
self._parser = expat.ParserCreate(self._source.getEncoding(),
intern = self._interning)
self._parser.StartElementHandler = self.start_element
self._parser.EndElementHandler = self.end_element
self._reset_cont_handler()
self._parser.UnparsedEntityDeclHandler = self.unparsed_entity_decl
self._parser.NotationDeclHandler = self.notation_decl
self._parser.StartNamespaceDeclHandler = self.start_namespace_decl
self._parser.EndNamespaceDeclHandler = self.end_namespace_decl
self._decl_handler_prop = None
if self._lex_handler_prop:
self._reset_lex_handler_prop()
# self._parser.DefaultHandler =
# self._parser.DefaultHandlerExpand =
# self._parser.NotStandaloneHandler =
self._parser.ExternalEntityRefHandler = self.external_entity_ref
try:
self._parser.SkippedEntityHandler = self.skipped_entity_handler
except AttributeError:
# This pyexpat does not support SkippedEntity
pass
self._parser.SetParamEntityParsing(
expat.XML_PARAM_ENTITY_PARSING_UNLESS_STANDALONE)
self._parsing = 0
self._entity_stack = []
# Locator methods
def getColumnNumber(self):
if self._parser is None:
return None
return self._parser.ErrorColumnNumber
def getLineNumber(self):
if self._parser is None:
return 1
return self._parser.ErrorLineNumber
def getPublicId(self):
return self._source.getPublicId()
def getSystemId(self):
return self._source.getSystemId()
# event handlers
def start_element(self, name, attrs):
self._cont_handler.startElement(name, AttributesImpl(attrs))
def end_element(self, name):
self._cont_handler.endElement(name)
def start_element_ns(self, name, attrs):
pair = name.split()
if len(pair) == 1:
# no namespace
pair = (None, name)
elif len(pair) == 3:
pair = pair[0], pair[1]
else:
# default namespace
pair = tuple(pair)
newattrs = {}
qnames = {}
for (aname, value) in attrs.items():
parts = aname.split()
length = len(parts)
if length == 1:
# no namespace
qname = aname
apair = (None, aname)
elif length == 3:
qname = "%s:%s" % (parts[2], parts[1])
apair = parts[0], parts[1]
else:
# default namespace
qname = parts[1]
apair = tuple(parts)
newattrs[apair] = value
qnames[apair] = qname
self._cont_handler.startElementNS(pair, None,
AttributesNSImpl(newattrs, qnames))
def end_element_ns(self, name):
pair = name.split()
if len(pair) == 1:
pair = (None, name)
elif len(pair) == 3:
pair = pair[0], pair[1]
else:
pair = tuple(pair)
self._cont_handler.endElementNS(pair, None)
# this is not used (call directly to ContentHandler)
def processing_instruction(self, target, data):
self._cont_handler.processingInstruction(target, data)
# this is not used (call directly to ContentHandler)
def character_data(self, data):
self._cont_handler.characters(data)
def start_namespace_decl(self, prefix, uri):
self._cont_handler.startPrefixMapping(prefix, uri)
def end_namespace_decl(self, prefix):
self._cont_handler.endPrefixMapping(prefix)
def start_doctype_decl(self, name, sysid, pubid, has_internal_subset):
self._lex_handler_prop.startDTD(name, pubid, sysid)
def unparsed_entity_decl(self, name, base, sysid, pubid, notation_name):
self._dtd_handler.unparsedEntityDecl(name, pubid, sysid, notation_name)
def notation_decl(self, name, base, sysid, pubid):
self._dtd_handler.notationDecl(name, pubid, sysid)
def external_entity_ref(self, context, base, sysid, pubid):
if not self._external_ges:
return 1
source = self._ent_handler.resolveEntity(pubid, sysid)
source = saxutils.prepare_input_source(source,
self._source.getSystemId() or
"")
self._entity_stack.append((self._parser, self._source))
self._parser = self._parser.ExternalEntityParserCreate(context)
self._source = source
try:
xmlreader.IncrementalParser.parse(self, source)
except:
return 0 # FIXME: save error info here?
(self._parser, self._source) = self._entity_stack[-1]
del self._entity_stack[-1]
return 1
def skipped_entity_handler(self, name, is_pe):
if is_pe:
# The SAX spec requires to report skipped PEs with a '%'
name = '%'+name
self._cont_handler.skippedEntity(name)
# ---
def create_parser(*args, **kwargs):
return ExpatParser(*args, **kwargs)
# ---
if __name__ == "__main__":
import xml.sax.saxutils
p = create_parser()
p.setContentHandler(xml.sax.saxutils.XMLGenerator())
p.setErrorHandler(xml.sax.ErrorHandler())
p.parse("http://www.ibiblio.org/xml/examples/shakespeare/hamlet.xml")
| 15,704 | 447 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/etree/ElementTree.py | """Lightweight XML support for Python.
XML is an inherently hierarchical data format, and the most natural way to
represent it is with a tree. This module has two classes for this purpose:
1. ElementTree represents the whole XML document as a tree and
2. Element represents a single node in this tree.
Interactions with the whole document (reading and writing to/from files) are
usually done on the ElementTree level. Interactions with a single XML element
and its sub-elements are done on the Element level.
Element is a flexible container object designed to store hierarchical data
structures in memory. It can be described as a cross between a list and a
dictionary. Each Element has a number of properties associated with it:
'tag' - a string containing the element's name.
'attributes' - a Python dictionary storing the element's attributes.
'text' - a string containing the element's text content.
'tail' - an optional string containing text after the element's end tag.
And a number of child elements stored in a Python sequence.
To create an element instance, use the Element constructor,
or the SubElement factory function.
You can also use the ElementTree class to wrap an element structure
and convert it to and from XML.
"""
#---------------------------------------------------------------------
# Licensed to PSF under a Contributor Agreement.
# See http://www.python.org/psf/license for licensing details.
#
# ElementTree
# Copyright (c) 1999-2008 by Fredrik Lundh. All rights reserved.
#
# [email protected]
# http://www.pythonware.com
# --------------------------------------------------------------------
# The ElementTree toolkit is
#
# Copyright (c) 1999-2008 by Fredrik Lundh
#
# By obtaining, using, and/or copying this software and/or its
# associated documentation, you agree that you have read, understood,
# and will comply with the following terms and conditions:
#
# Permission to use, copy, modify, and distribute this software and
# its associated documentation for any purpose and without fee is
# hereby granted, provided that the above copyright notice appears in
# all copies, and that both that copyright notice and this permission
# notice appear in supporting documentation, and that the name of
# Secret Labs AB or the author not be used in advertising or publicity
# pertaining to distribution of the software without specific, written
# prior permission.
#
# SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
# TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT-
# ABILITY AND FITNESS. IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR
# BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
# --------------------------------------------------------------------
__all__ = [
# public symbols
"Comment",
"dump",
"Element", "ElementTree",
"fromstring", "fromstringlist",
"iselement", "iterparse",
"parse", "ParseError",
"PI", "ProcessingInstruction",
"QName",
"SubElement",
"tostring", "tostringlist",
"TreeBuilder",
"VERSION",
"XML", "XMLID",
"XMLParser", "XMLPullParser",
"register_namespace",
]
VERSION = "1.3.0"
import sys
import re
import warnings
import io
import collections
import contextlib
from . import ElementPath
class ParseError(SyntaxError):
"""An error when parsing an XML document.
In addition to its exception value, a ParseError contains
two extra attributes:
'code' - the specific exception code
'position' - the line and column of the error
"""
pass
# --------------------------------------------------------------------
def iselement(element):
"""Return True if *element* appears to be an Element."""
return hasattr(element, 'tag')
class Element:
"""An XML element.
This class is the reference implementation of the Element interface.
An element's length is its number of subelements. That means if you
want to check if an element is truly empty, you should check BOTH
its length AND its text attribute.
The element tag, attribute names, and attribute values can be either
bytes or strings.
*tag* is the element name. *attrib* is an optional dictionary containing
element attributes. *extra* are additional element attributes given as
keyword arguments.
Example form:
<tag attrib>text<child/>...</tag>tail
"""
tag = None
"""The element's name."""
attrib = None
"""Dictionary of the element's attributes."""
text = None
"""
Text before first subelement. This is either a string or the value None.
Note that if there is no text, this attribute may be either
None or the empty string, depending on the parser.
"""
tail = None
"""
Text after this element's end tag, but before the next sibling element's
start tag. This is either a string or the value None. Note that if there
was no text, this attribute may be either None or an empty string,
depending on the parser.
"""
def __init__(self, tag, attrib={}, **extra):
if not isinstance(attrib, dict):
raise TypeError("attrib must be dict, not %s" % (
attrib.__class__.__name__,))
attrib = attrib.copy()
attrib.update(extra)
self.tag = tag
self.attrib = attrib
self._children = []
def __repr__(self):
return "<%s %r at %#x>" % (self.__class__.__name__, self.tag, id(self))
def makeelement(self, tag, attrib):
"""Create a new element with the same type.
*tag* is a string containing the element name.
*attrib* is a dictionary containing the element attributes.
Do not call this method, use the SubElement factory function instead.
"""
return self.__class__(tag, attrib)
def copy(self):
"""Return copy of current element.
This creates a shallow copy. Subelements will be shared with the
original tree.
"""
elem = self.makeelement(self.tag, self.attrib)
elem.text = self.text
elem.tail = self.tail
elem[:] = self
return elem
def __len__(self):
return len(self._children)
def __bool__(self):
warnings.warn(
"The behavior of this method will change in future versions. "
"Use specific 'len(elem)' or 'elem is not None' test instead.",
FutureWarning, stacklevel=2
)
return len(self._children) != 0 # emulate old behaviour, for now
def __getitem__(self, index):
return self._children[index]
def __setitem__(self, index, element):
# if isinstance(index, slice):
# for elt in element:
# assert iselement(elt)
# else:
# assert iselement(element)
self._children[index] = element
def __delitem__(self, index):
del self._children[index]
def append(self, subelement):
"""Add *subelement* to the end of this element.
The new element will appear in document order after the last existing
subelement (or directly after the text, if it's the first subelement),
but before the end tag for this element.
"""
self._assert_is_element(subelement)
self._children.append(subelement)
def extend(self, elements):
"""Append subelements from a sequence.
*elements* is a sequence with zero or more elements.
"""
for element in elements:
self._assert_is_element(element)
self._children.extend(elements)
def insert(self, index, subelement):
"""Insert *subelement* at position *index*."""
self._assert_is_element(subelement)
self._children.insert(index, subelement)
def _assert_is_element(self, e):
# Need to refer to the actual Python implementation, not the
# shadowing C implementation.
if not isinstance(e, _Element_Py):
raise TypeError('expected an Element, not %s' % type(e).__name__)
def remove(self, subelement):
"""Remove matching subelement.
Unlike the find methods, this method compares elements based on
identity, NOT ON tag value or contents. To remove subelements by
other means, the easiest way is to use a list comprehension to
select what elements to keep, and then use slice assignment to update
the parent element.
ValueError is raised if a matching element could not be found.
"""
# assert iselement(element)
self._children.remove(subelement)
def getchildren(self):
"""(Deprecated) Return all subelements.
Elements are returned in document order.
"""
warnings.warn(
"This method will be removed in future versions. "
"Use 'list(elem)' or iteration over elem instead.",
DeprecationWarning, stacklevel=2
)
return self._children
def find(self, path, namespaces=None):
"""Find first matching element by tag name or path.
*path* is a string having either an element tag or an XPath,
*namespaces* is an optional mapping from namespace prefix to full name.
Return the first matching element, or None if no element was found.
"""
return ElementPath.find(self, path, namespaces)
def findtext(self, path, default=None, namespaces=None):
"""Find text for first matching element by tag name or path.
*path* is a string having either an element tag or an XPath,
*default* is the value to return if the element was not found,
*namespaces* is an optional mapping from namespace prefix to full name.
Return text content of first matching element, or default value if
none was found. Note that if an element is found having no text
content, the empty string is returned.
"""
return ElementPath.findtext(self, path, default, namespaces)
def findall(self, path, namespaces=None):
"""Find all matching subelements by tag name or path.
*path* is a string having either an element tag or an XPath,
*namespaces* is an optional mapping from namespace prefix to full name.
Returns list containing all matching elements in document order.
"""
return ElementPath.findall(self, path, namespaces)
def iterfind(self, path, namespaces=None):
"""Find all matching subelements by tag name or path.
*path* is a string having either an element tag or an XPath,
*namespaces* is an optional mapping from namespace prefix to full name.
Return an iterable yielding all matching elements in document order.
"""
return ElementPath.iterfind(self, path, namespaces)
def clear(self):
"""Reset element.
This function removes all subelements, clears all attributes, and sets
the text and tail attributes to None.
"""
self.attrib.clear()
self._children = []
self.text = self.tail = None
def get(self, key, default=None):
"""Get element attribute.
Equivalent to attrib.get, but some implementations may handle this a
bit more efficiently. *key* is what attribute to look for, and
*default* is what to return if the attribute was not found.
Returns a string containing the attribute value, or the default if
attribute was not found.
"""
return self.attrib.get(key, default)
def set(self, key, value):
"""Set element attribute.
Equivalent to attrib[key] = value, but some implementations may handle
this a bit more efficiently. *key* is what attribute to set, and
*value* is the attribute value to set it to.
"""
self.attrib[key] = value
def keys(self):
"""Get list of attribute names.
Names are returned in an arbitrary order, just like an ordinary
Python dict. Equivalent to attrib.keys()
"""
return self.attrib.keys()
def items(self):
"""Get element attributes as a sequence.
The attributes are returned in arbitrary order. Equivalent to
attrib.items().
Return a list of (name, value) tuples.
"""
return self.attrib.items()
def iter(self, tag=None):
"""Create tree iterator.
The iterator loops over the element and all subelements in document
order, returning all elements with a matching tag.
If the tree structure is modified during iteration, new or removed
elements may or may not be included. To get a stable set, use the
list() function on the iterator, and loop over the resulting list.
*tag* is what tags to look for (default is to return all elements)
Return an iterator containing all the matching elements.
"""
if tag == "*":
tag = None
if tag is None or self.tag == tag:
yield self
for e in self._children:
yield from e.iter(tag)
# compatibility
def getiterator(self, tag=None):
# Change for a DeprecationWarning in 1.4
warnings.warn(
"This method will be removed in future versions. "
"Use 'elem.iter()' or 'list(elem.iter())' instead.",
PendingDeprecationWarning, stacklevel=2
)
return list(self.iter(tag))
def itertext(self):
"""Create text iterator.
The iterator loops over the element and all subelements in document
order, returning all inner text.
"""
tag = self.tag
if not isinstance(tag, str) and tag is not None:
return
t = self.text
if t:
yield t
for e in self:
yield from e.itertext()
t = e.tail
if t:
yield t
def SubElement(parent, tag, attrib={}, **extra):
"""Subelement factory which creates an element instance, and appends it
to an existing parent.
The element tag, attribute names, and attribute values can be either
bytes or Unicode strings.
*parent* is the parent element, *tag* is the subelements name, *attrib* is
an optional directory containing element attributes, *extra* are
additional attributes given as keyword arguments.
"""
attrib = attrib.copy()
attrib.update(extra)
element = parent.makeelement(tag, attrib)
parent.append(element)
return element
def Comment(text=None):
"""Comment element factory.
This function creates a special element which the standard serializer
serializes as an XML comment.
*text* is a string containing the comment string.
"""
element = Element(Comment)
element.text = text
return element
def ProcessingInstruction(target, text=None):
"""Processing Instruction element factory.
This function creates a special element which the standard serializer
serializes as an XML comment.
*target* is a string containing the processing instruction, *text* is a
string containing the processing instruction contents, if any.
"""
element = Element(ProcessingInstruction)
element.text = target
if text:
element.text = element.text + " " + text
return element
PI = ProcessingInstruction
class QName:
"""Qualified name wrapper.
This class can be used to wrap a QName attribute value in order to get
proper namespace handing on output.
*text_or_uri* is a string containing the QName value either in the form
{uri}local, or if the tag argument is given, the URI part of a QName.
*tag* is an optional argument which if given, will make the first
argument (text_or_uri) be interpreted as a URI, and this argument (tag)
be interpreted as a local name.
"""
def __init__(self, text_or_uri, tag=None):
if tag:
text_or_uri = "{%s}%s" % (text_or_uri, tag)
self.text = text_or_uri
def __str__(self):
return self.text
def __repr__(self):
return '<%s %r>' % (self.__class__.__name__, self.text)
def __hash__(self):
return hash(self.text)
def __le__(self, other):
if isinstance(other, QName):
return self.text <= other.text
return self.text <= other
def __lt__(self, other):
if isinstance(other, QName):
return self.text < other.text
return self.text < other
def __ge__(self, other):
if isinstance(other, QName):
return self.text >= other.text
return self.text >= other
def __gt__(self, other):
if isinstance(other, QName):
return self.text > other.text
return self.text > other
def __eq__(self, other):
if isinstance(other, QName):
return self.text == other.text
return self.text == other
# --------------------------------------------------------------------
class ElementTree:
"""An XML element hierarchy.
This class also provides support for serialization to and from
standard XML.
*element* is an optional root element node,
*file* is an optional file handle or file name of an XML file whose
contents will be used to initialize the tree with.
"""
def __init__(self, element=None, file=None):
# assert element is None or iselement(element)
self._root = element # first node
if file:
self.parse(file)
def getroot(self):
"""Return root element of this tree."""
return self._root
def _setroot(self, element):
"""Replace root element of this tree.
This will discard the current contents of the tree and replace it
with the given element. Use with care!
"""
# assert iselement(element)
self._root = element
def parse(self, source, parser=None):
"""Load external XML document into element tree.
*source* is a file name or file object, *parser* is an optional parser
instance that defaults to XMLParser.
ParseError is raised if the parser fails to parse the document.
Returns the root element of the given source document.
"""
close_source = False
if not hasattr(source, "read"):
source = open(source, "rb")
close_source = True
try:
if parser is None:
# If no parser was specified, create a default XMLParser
parser = XMLParser()
if hasattr(parser, '_parse_whole'):
# The default XMLParser, when it comes from an accelerator,
# can define an internal _parse_whole API for efficiency.
# It can be used to parse the whole source without feeding
# it with chunks.
self._root = parser._parse_whole(source)
return self._root
while True:
data = source.read(65536)
if not data:
break
parser.feed(data)
self._root = parser.close()
return self._root
finally:
if close_source:
source.close()
def iter(self, tag=None):
"""Create and return tree iterator for the root element.
The iterator loops over all elements in this tree, in document order.
*tag* is a string with the tag name to iterate over
(default is to return all elements).
"""
# assert self._root is not None
return self._root.iter(tag)
# compatibility
def getiterator(self, tag=None):
# Change for a DeprecationWarning in 1.4
warnings.warn(
"This method will be removed in future versions. "
"Use 'tree.iter()' or 'list(tree.iter())' instead.",
PendingDeprecationWarning, stacklevel=2
)
return list(self.iter(tag))
def find(self, path, namespaces=None):
"""Find first matching element by tag name or path.
Same as getroot().find(path), which is Element.find()
*path* is a string having either an element tag or an XPath,
*namespaces* is an optional mapping from namespace prefix to full name.
Return the first matching element, or None if no element was found.
"""
# assert self._root is not None
if path[:1] == "/":
path = "." + path
warnings.warn(
"This search is broken in 1.3 and earlier, and will be "
"fixed in a future version. If you rely on the current "
"behaviour, change it to %r" % path,
FutureWarning, stacklevel=2
)
return self._root.find(path, namespaces)
def findtext(self, path, default=None, namespaces=None):
"""Find first matching element by tag name or path.
Same as getroot().findtext(path), which is Element.findtext()
*path* is a string having either an element tag or an XPath,
*namespaces* is an optional mapping from namespace prefix to full name.
Return the first matching element, or None if no element was found.
"""
# assert self._root is not None
if path[:1] == "/":
path = "." + path
warnings.warn(
"This search is broken in 1.3 and earlier, and will be "
"fixed in a future version. If you rely on the current "
"behaviour, change it to %r" % path,
FutureWarning, stacklevel=2
)
return self._root.findtext(path, default, namespaces)
def findall(self, path, namespaces=None):
"""Find all matching subelements by tag name or path.
Same as getroot().findall(path), which is Element.findall().
*path* is a string having either an element tag or an XPath,
*namespaces* is an optional mapping from namespace prefix to full name.
Return list containing all matching elements in document order.
"""
# assert self._root is not None
if path[:1] == "/":
path = "." + path
warnings.warn(
"This search is broken in 1.3 and earlier, and will be "
"fixed in a future version. If you rely on the current "
"behaviour, change it to %r" % path,
FutureWarning, stacklevel=2
)
return self._root.findall(path, namespaces)
def iterfind(self, path, namespaces=None):
"""Find all matching subelements by tag name or path.
Same as getroot().iterfind(path), which is element.iterfind()
*path* is a string having either an element tag or an XPath,
*namespaces* is an optional mapping from namespace prefix to full name.
Return an iterable yielding all matching elements in document order.
"""
# assert self._root is not None
if path[:1] == "/":
path = "." + path
warnings.warn(
"This search is broken in 1.3 and earlier, and will be "
"fixed in a future version. If you rely on the current "
"behaviour, change it to %r" % path,
FutureWarning, stacklevel=2
)
return self._root.iterfind(path, namespaces)
def write(self, file_or_filename,
encoding=None,
xml_declaration=None,
default_namespace=None,
method=None, *,
short_empty_elements=True):
"""Write element tree to a file as XML.
Arguments:
*file_or_filename* -- file name or a file object opened for writing
*encoding* -- the output encoding (default: US-ASCII)
*xml_declaration* -- bool indicating if an XML declaration should be
added to the output. If None, an XML declaration
is added if encoding IS NOT either of:
US-ASCII, UTF-8, or Unicode
*default_namespace* -- sets the default XML namespace (for "xmlns")
*method* -- either "xml" (default), "html, "text", or "c14n"
*short_empty_elements* -- controls the formatting of elements
that contain no content. If True (default)
they are emitted as a single self-closed
tag, otherwise they are emitted as a pair
of start/end tags
"""
if not method:
method = "xml"
elif method not in _serialize:
raise ValueError("unknown method %r" % method)
if not encoding:
if method == "c14n":
encoding = "utf-8"
else:
encoding = "us-ascii"
enc_lower = encoding.lower()
with _get_writer(file_or_filename, enc_lower) as write:
if method == "xml" and (xml_declaration or
(xml_declaration is None and
enc_lower not in ("utf-8", "us-ascii", "unicode"))):
declared_encoding = encoding
if enc_lower == "unicode":
# Retrieve the default encoding for the xml declaration
import locale
declared_encoding = locale.getpreferredencoding()
write("<?xml version='1.0' encoding='%s'?>\n" % (
declared_encoding,))
if method == "text":
_serialize_text(write, self._root)
else:
qnames, namespaces = _namespaces(self._root, default_namespace)
serialize = _serialize[method]
serialize(write, self._root, qnames, namespaces,
short_empty_elements=short_empty_elements)
def write_c14n(self, file):
# lxml.etree compatibility. use output method instead
return self.write(file, method="c14n")
# --------------------------------------------------------------------
# serialization support
@contextlib.contextmanager
def _get_writer(file_or_filename, encoding):
# returns text write method and release all resources after using
try:
write = file_or_filename.write
except AttributeError:
# file_or_filename is a file name
if encoding == "unicode":
file = open(file_or_filename, "w")
else:
file = open(file_or_filename, "w", encoding=encoding,
errors="xmlcharrefreplace")
with file:
yield file.write
else:
# file_or_filename is a file-like object
# encoding determines if it is a text or binary writer
if encoding == "unicode":
# use a text writer as is
yield write
else:
# wrap a binary writer with TextIOWrapper
with contextlib.ExitStack() as stack:
if isinstance(file_or_filename, io.BufferedIOBase):
file = file_or_filename
elif isinstance(file_or_filename, io.RawIOBase):
file = io.BufferedWriter(file_or_filename)
# Keep the original file open when the BufferedWriter is
# destroyed
stack.callback(file.detach)
else:
# This is to handle passed objects that aren't in the
# IOBase hierarchy, but just have a write method
file = io.BufferedIOBase()
file.writable = lambda: True
file.write = write
try:
# TextIOWrapper uses this methods to determine
# if BOM (for UTF-16, etc) should be added
file.seekable = file_or_filename.seekable
file.tell = file_or_filename.tell
except AttributeError:
pass
file = io.TextIOWrapper(file,
encoding=encoding,
errors="xmlcharrefreplace",
newline="\n")
# Keep the original file open when the TextIOWrapper is
# destroyed
stack.callback(file.detach)
yield file.write
def _namespaces(elem, default_namespace=None):
# identify namespaces used in this tree
# maps qnames to *encoded* prefix:local names
qnames = {None: None}
# maps uri:s to prefixes
namespaces = {}
if default_namespace:
namespaces[default_namespace] = ""
def add_qname(qname):
# calculate serialized qname representation
try:
if qname[:1] == "{":
uri, tag = qname[1:].rsplit("}", 1)
prefix = namespaces.get(uri)
if prefix is None:
prefix = _namespace_map.get(uri)
if prefix is None:
prefix = "ns%d" % len(namespaces)
if prefix != "xml":
namespaces[uri] = prefix
if prefix:
qnames[qname] = "%s:%s" % (prefix, tag)
else:
qnames[qname] = tag # default element
else:
if default_namespace:
# FIXME: can this be handled in XML 1.0?
raise ValueError(
"cannot use non-qualified names with "
"default_namespace option"
)
qnames[qname] = qname
except TypeError:
_raise_serialization_error(qname)
# populate qname and namespaces table
for elem in elem.iter():
tag = elem.tag
if isinstance(tag, QName):
if tag.text not in qnames:
add_qname(tag.text)
elif isinstance(tag, str):
if tag not in qnames:
add_qname(tag)
elif tag is not None and tag is not Comment and tag is not PI:
_raise_serialization_error(tag)
for key, value in elem.items():
if isinstance(key, QName):
key = key.text
if key not in qnames:
add_qname(key)
if isinstance(value, QName) and value.text not in qnames:
add_qname(value.text)
text = elem.text
if isinstance(text, QName) and text.text not in qnames:
add_qname(text.text)
return qnames, namespaces
def _serialize_xml(write, elem, qnames, namespaces,
short_empty_elements, **kwargs):
tag = elem.tag
text = elem.text
if tag is Comment:
write("<!--%s-->" % text)
elif tag is ProcessingInstruction:
write("<?%s?>" % text)
else:
tag = qnames[tag]
if tag is None:
if text:
write(_escape_cdata(text))
for e in elem:
_serialize_xml(write, e, qnames, None,
short_empty_elements=short_empty_elements)
else:
write("<" + tag)
items = list(elem.items())
if items or namespaces:
if namespaces:
for v, k in sorted(namespaces.items(),
key=lambda x: x[1]): # sort on prefix
if k:
k = ":" + k
write(" xmlns%s=\"%s\"" % (
k,
_escape_attrib(v)
))
for k, v in sorted(items): # lexical order
if isinstance(k, QName):
k = k.text
if isinstance(v, QName):
v = qnames[v.text]
else:
v = _escape_attrib(v)
write(" %s=\"%s\"" % (qnames[k], v))
if text or len(elem) or not short_empty_elements:
write(">")
if text:
write(_escape_cdata(text))
for e in elem:
_serialize_xml(write, e, qnames, None,
short_empty_elements=short_empty_elements)
write("</" + tag + ">")
else:
write(" />")
if elem.tail:
write(_escape_cdata(elem.tail))
HTML_EMPTY = ("area", "base", "basefont", "br", "col", "frame", "hr",
"img", "input", "isindex", "link", "meta", "param")
try:
HTML_EMPTY = set(HTML_EMPTY)
except NameError:
pass
def _serialize_html(write, elem, qnames, namespaces, **kwargs):
tag = elem.tag
text = elem.text
if tag is Comment:
write("<!--%s-->" % _escape_cdata(text))
elif tag is ProcessingInstruction:
write("<?%s?>" % _escape_cdata(text))
else:
tag = qnames[tag]
if tag is None:
if text:
write(_escape_cdata(text))
for e in elem:
_serialize_html(write, e, qnames, None)
else:
write("<" + tag)
items = list(elem.items())
if items or namespaces:
if namespaces:
for v, k in sorted(namespaces.items(),
key=lambda x: x[1]): # sort on prefix
if k:
k = ":" + k
write(" xmlns%s=\"%s\"" % (
k,
_escape_attrib(v)
))
for k, v in sorted(items): # lexical order
if isinstance(k, QName):
k = k.text
if isinstance(v, QName):
v = qnames[v.text]
else:
v = _escape_attrib_html(v)
# FIXME: handle boolean attributes
write(" %s=\"%s\"" % (qnames[k], v))
write(">")
ltag = tag.lower()
if text:
if ltag == "script" or ltag == "style":
write(text)
else:
write(_escape_cdata(text))
for e in elem:
_serialize_html(write, e, qnames, None)
if ltag not in HTML_EMPTY:
write("</" + tag + ">")
if elem.tail:
write(_escape_cdata(elem.tail))
def _serialize_text(write, elem):
for part in elem.itertext():
write(part)
if elem.tail:
write(elem.tail)
_serialize = {
"xml": _serialize_xml,
"html": _serialize_html,
"text": _serialize_text,
# this optional method is imported at the end of the module
# "c14n": _serialize_c14n,
}
def register_namespace(prefix, uri):
"""Register a namespace prefix.
The registry is global, and any existing mapping for either the
given prefix or the namespace URI will be removed.
*prefix* is the namespace prefix, *uri* is a namespace uri. Tags and
attributes in this namespace will be serialized with prefix if possible.
ValueError is raised if prefix is reserved or is invalid.
"""
if re.match(r"ns\d+$", prefix):
raise ValueError("Prefix format reserved for internal use")
for k, v in list(_namespace_map.items()):
if k == uri or v == prefix:
del _namespace_map[k]
_namespace_map[uri] = prefix
_namespace_map = {
# "well-known" namespace prefixes
"http://www.w3.org/XML/1998/namespace": "xml",
"http://www.w3.org/1999/xhtml": "html",
"http://www.w3.org/1999/02/22-rdf-syntax-ns#": "rdf",
"http://schemas.xmlsoap.org/wsdl/": "wsdl",
# xml schema
"http://www.w3.org/2001/XMLSchema": "xs",
"http://www.w3.org/2001/XMLSchema-instance": "xsi",
# dublin core
"http://purl.org/dc/elements/1.1/": "dc",
}
# For tests and troubleshooting
register_namespace._namespace_map = _namespace_map
def _raise_serialization_error(text):
raise TypeError(
"cannot serialize %r (type %s)" % (text, type(text).__name__)
)
def _escape_cdata(text):
# escape character data
try:
# it's worth avoiding do-nothing calls for strings that are
# shorter than 500 characters, or so. assume that's, by far,
# the most common case in most applications.
if "&" in text:
text = text.replace("&", "&")
if "<" in text:
text = text.replace("<", "<")
if ">" in text:
text = text.replace(">", ">")
return text
except (TypeError, AttributeError):
_raise_serialization_error(text)
def _escape_attrib(text):
# escape attribute value
try:
if "&" in text:
text = text.replace("&", "&")
if "<" in text:
text = text.replace("<", "<")
if ">" in text:
text = text.replace(">", ">")
if "\"" in text:
text = text.replace("\"", """)
# The following business with carriage returns is to satisfy
# Section 2.11 of the XML specification, stating that
# CR or CR LN should be replaced with just LN
# http://www.w3.org/TR/REC-xml/#sec-line-ends
if "\r\n" in text:
text = text.replace("\r\n", "\n")
if "\r" in text:
text = text.replace("\r", "\n")
#The following four lines are issue 17582
if "\n" in text:
text = text.replace("\n", " ")
if "\t" in text:
text = text.replace("\t", "	")
return text
except (TypeError, AttributeError):
_raise_serialization_error(text)
def _escape_attrib_html(text):
# escape attribute value
try:
if "&" in text:
text = text.replace("&", "&")
if ">" in text:
text = text.replace(">", ">")
if "\"" in text:
text = text.replace("\"", """)
return text
except (TypeError, AttributeError):
_raise_serialization_error(text)
# --------------------------------------------------------------------
def tostring(element, encoding=None, method=None, *,
short_empty_elements=True):
"""Generate string representation of XML element.
All subelements are included. If encoding is "unicode", a string
is returned. Otherwise a bytestring is returned.
*element* is an Element instance, *encoding* is an optional output
encoding defaulting to US-ASCII, *method* is an optional output which can
be one of "xml" (default), "html", "text" or "c14n".
Returns an (optionally) encoded string containing the XML data.
"""
stream = io.StringIO() if encoding == 'unicode' else io.BytesIO()
ElementTree(element).write(stream, encoding, method=method,
short_empty_elements=short_empty_elements)
return stream.getvalue()
class _ListDataStream(io.BufferedIOBase):
"""An auxiliary stream accumulating into a list reference."""
def __init__(self, lst):
self.lst = lst
def writable(self):
return True
def seekable(self):
return True
def write(self, b):
self.lst.append(b)
def tell(self):
return len(self.lst)
def tostringlist(element, encoding=None, method=None, *,
short_empty_elements=True):
lst = []
stream = _ListDataStream(lst)
ElementTree(element).write(stream, encoding, method=method,
short_empty_elements=short_empty_elements)
return lst
def dump(elem):
"""Write element tree or element structure to sys.stdout.
This function should be used for debugging only.
*elem* is either an ElementTree, or a single Element. The exact output
format is implementation dependent. In this version, it's written as an
ordinary XML file.
"""
# debugging
if not isinstance(elem, ElementTree):
elem = ElementTree(elem)
elem.write(sys.stdout, encoding="unicode")
tail = elem.getroot().tail
if not tail or tail[-1] != "\n":
sys.stdout.write("\n")
# --------------------------------------------------------------------
# parsing
def parse(source, parser=None):
"""Parse XML document into element tree.
*source* is a filename or file object containing XML data,
*parser* is an optional parser instance defaulting to XMLParser.
Return an ElementTree instance.
"""
tree = ElementTree()
tree.parse(source, parser)
return tree
def iterparse(source, events=None, parser=None):
"""Incrementally parse XML document into ElementTree.
This class also reports what's going on to the user based on the
*events* it is initialized with. The supported events are the strings
"start", "end", "start-ns" and "end-ns" (the "ns" events are used to get
detailed namespace information). If *events* is omitted, only
"end" events are reported.
*source* is a filename or file object containing XML data, *events* is
a list of events to report back, *parser* is an optional parser instance.
Returns an iterator providing (event, elem) pairs.
"""
# Use the internal, undocumented _parser argument for now; When the
# parser argument of iterparse is removed, this can be killed.
pullparser = XMLPullParser(events=events, _parser=parser)
def iterator():
try:
while True:
yield from pullparser.read_events()
# load event buffer
data = source.read(16 * 1024)
if not data:
break
pullparser.feed(data)
root = pullparser._close_and_return_root()
yield from pullparser.read_events()
it.root = root
finally:
if close_source:
source.close()
class IterParseIterator(collections.Iterator):
__next__ = iterator().__next__
it = IterParseIterator()
it.root = None
del iterator, IterParseIterator
close_source = False
if not hasattr(source, "read"):
source = open(source, "rb")
close_source = True
return it
class XMLPullParser:
def __init__(self, events=None, *, _parser=None):
# The _parser argument is for internal use only and must not be relied
# upon in user code. It will be removed in a future release.
# See http://bugs.python.org/issue17741 for more details.
self._events_queue = collections.deque()
self._parser = _parser or XMLParser(target=TreeBuilder())
# wire up the parser for event reporting
if events is None:
events = ("end",)
self._parser._setevents(self._events_queue, events)
def feed(self, data):
"""Feed encoded data to parser."""
if self._parser is None:
raise ValueError("feed() called after end of stream")
if data:
try:
self._parser.feed(data)
except SyntaxError as exc:
self._events_queue.append(exc)
def _close_and_return_root(self):
# iterparse needs this to set its root attribute properly :(
root = self._parser.close()
self._parser = None
return root
def close(self):
"""Finish feeding data to parser.
Unlike XMLParser, does not return the root element. Use
read_events() to consume elements from XMLPullParser.
"""
self._close_and_return_root()
def read_events(self):
"""Return an iterator over currently available (event, elem) pairs.
Events are consumed from the internal event queue as they are
retrieved from the iterator.
"""
events = self._events_queue
while events:
event = events.popleft()
if isinstance(event, Exception):
raise event
else:
yield event
def XML(text, parser=None):
"""Parse XML document from string constant.
This function can be used to embed "XML Literals" in Python code.
*text* is a string containing XML data, *parser* is an
optional parser instance, defaulting to the standard XMLParser.
Returns an Element instance.
"""
if not parser:
parser = XMLParser(target=TreeBuilder())
parser.feed(text)
return parser.close()
def XMLID(text, parser=None):
"""Parse XML document from string constant for its IDs.
*text* is a string containing XML data, *parser* is an
optional parser instance, defaulting to the standard XMLParser.
Returns an (Element, dict) tuple, in which the
dict maps element id:s to elements.
"""
if not parser:
parser = XMLParser(target=TreeBuilder())
parser.feed(text)
tree = parser.close()
ids = {}
for elem in tree.iter():
id = elem.get("id")
if id:
ids[id] = elem
return tree, ids
# Parse XML document from string constant. Alias for XML().
fromstring = XML
def fromstringlist(sequence, parser=None):
"""Parse XML document from sequence of string fragments.
*sequence* is a list of other sequence, *parser* is an optional parser
instance, defaulting to the standard XMLParser.
Returns an Element instance.
"""
if not parser:
parser = XMLParser(target=TreeBuilder())
for text in sequence:
parser.feed(text)
return parser.close()
# --------------------------------------------------------------------
class TreeBuilder:
"""Generic element structure builder.
This builder converts a sequence of start, data, and end method
calls to a well-formed element structure.
You can use this class to build an element structure using a custom XML
parser, or a parser for some other XML-like format.
*element_factory* is an optional element factory which is called
to create new Element instances, as necessary.
"""
def __init__(self, element_factory=None):
self._data = [] # data collector
self._elem = [] # element stack
self._last = None # last element
self._tail = None # true if we're after an end tag
if element_factory is None:
element_factory = Element
self._factory = element_factory
def close(self):
"""Flush builder buffers and return toplevel document Element."""
assert len(self._elem) == 0, "missing end tags"
assert self._last is not None, "missing toplevel element"
return self._last
def _flush(self):
if self._data:
if self._last is not None:
text = "".join(self._data)
if self._tail:
assert self._last.tail is None, "internal error (tail)"
self._last.tail = text
else:
assert self._last.text is None, "internal error (text)"
self._last.text = text
self._data = []
def data(self, data):
"""Add text to current element."""
self._data.append(data)
def start(self, tag, attrs):
"""Open new element and return it.
*tag* is the element name, *attrs* is a dict containing element
attributes.
"""
self._flush()
self._last = elem = self._factory(tag, attrs)
if self._elem:
self._elem[-1].append(elem)
self._elem.append(elem)
self._tail = 0
return elem
def end(self, tag):
"""Close and return current Element.
*tag* is the element name.
"""
self._flush()
self._last = self._elem.pop()
assert self._last.tag == tag,\
"end tag mismatch (expected %s, got %s)" % (
self._last.tag, tag)
self._tail = 1
return self._last
# also see ElementTree and TreeBuilder
class XMLParser:
"""Element structure builder for XML source data based on the expat parser.
*html* are predefined HTML entities (deprecated and not supported),
*target* is an optional target object which defaults to an instance of the
standard TreeBuilder class, *encoding* is an optional encoding string
which if given, overrides the encoding specified in the XML file:
http://www.iana.org/assignments/character-sets
"""
def __init__(self, html=0, target=None, encoding=None):
try:
from xml.parsers import expat
except ImportError:
try:
import pyexpat as expat
except ImportError:
raise ImportError(
"No module named expat; use SimpleXMLTreeBuilder instead"
)
parser = expat.ParserCreate(encoding, "}")
if target is None:
target = TreeBuilder()
# underscored names are provided for compatibility only
self.parser = self._parser = parser
self.target = self._target = target
self._error = expat.error
self._names = {} # name memo cache
# main callbacks
parser.DefaultHandlerExpand = self._default
if hasattr(target, 'start'):
parser.StartElementHandler = self._start
if hasattr(target, 'end'):
parser.EndElementHandler = self._end
if hasattr(target, 'data'):
parser.CharacterDataHandler = target.data
# miscellaneous callbacks
if hasattr(target, 'comment'):
parser.CommentHandler = target.comment
if hasattr(target, 'pi'):
parser.ProcessingInstructionHandler = target.pi
# Configure pyexpat: buffering, new-style attribute handling.
parser.buffer_text = 1
parser.ordered_attributes = 1
parser.specified_attributes = 1
self._doctype = None
self.entity = {}
try:
self.version = "Expat %d.%d.%d" % expat.version_info
except AttributeError:
pass # unknown
def _setevents(self, events_queue, events_to_report):
# Internal API for XMLPullParser
# events_to_report: a list of events to report during parsing (same as
# the *events* of XMLPullParser's constructor.
# events_queue: a list of actual parsing events that will be populated
# by the underlying parser.
#
parser = self._parser
append = events_queue.append
for event_name in events_to_report:
if event_name == "start":
parser.ordered_attributes = 1
parser.specified_attributes = 1
def handler(tag, attrib_in, event=event_name, append=append,
start=self._start):
append((event, start(tag, attrib_in)))
parser.StartElementHandler = handler
elif event_name == "end":
def handler(tag, event=event_name, append=append,
end=self._end):
append((event, end(tag)))
parser.EndElementHandler = handler
elif event_name == "start-ns":
def handler(prefix, uri, event=event_name, append=append):
append((event, (prefix or "", uri or "")))
parser.StartNamespaceDeclHandler = handler
elif event_name == "end-ns":
def handler(prefix, event=event_name, append=append):
append((event, None))
parser.EndNamespaceDeclHandler = handler
else:
raise ValueError("unknown event %r" % event_name)
def _raiseerror(self, value):
err = ParseError(value)
err.code = value.code
err.position = value.lineno, value.offset
raise err
def _fixname(self, key):
# expand qname, and convert name string to ascii, if possible
try:
name = self._names[key]
except KeyError:
name = key
if "}" in name:
name = "{" + name
self._names[key] = name
return name
def _start(self, tag, attr_list):
# Handler for expat's StartElementHandler. Since ordered_attributes
# is set, the attributes are reported as a list of alternating
# attribute name,value.
fixname = self._fixname
tag = fixname(tag)
attrib = {}
if attr_list:
for i in range(0, len(attr_list), 2):
attrib[fixname(attr_list[i])] = attr_list[i+1]
return self.target.start(tag, attrib)
def _end(self, tag):
return self.target.end(self._fixname(tag))
def _default(self, text):
prefix = text[:1]
if prefix == "&":
# deal with undefined entities
try:
data_handler = self.target.data
except AttributeError:
return
try:
data_handler(self.entity[text[1:-1]])
except KeyError:
from xml.parsers import expat
err = expat.error(
"undefined entity %s: line %d, column %d" %
(text, self.parser.ErrorLineNumber,
self.parser.ErrorColumnNumber)
)
err.code = 11 # XML_ERROR_UNDEFINED_ENTITY
err.lineno = self.parser.ErrorLineNumber
err.offset = self.parser.ErrorColumnNumber
raise err
elif prefix == "<" and text[:9] == "<!DOCTYPE":
self._doctype = [] # inside a doctype declaration
elif self._doctype is not None:
# parse doctype contents
if prefix == ">":
self._doctype = None
return
text = text.strip()
if not text:
return
self._doctype.append(text)
n = len(self._doctype)
if n > 2:
type = self._doctype[1]
if type == "PUBLIC" and n == 4:
name, type, pubid, system = self._doctype
if pubid:
pubid = pubid[1:-1]
elif type == "SYSTEM" and n == 3:
name, type, system = self._doctype
pubid = None
else:
return
if hasattr(self.target, "doctype"):
self.target.doctype(name, pubid, system[1:-1])
elif self.doctype != self._XMLParser__doctype:
# warn about deprecated call
self._XMLParser__doctype(name, pubid, system[1:-1])
self.doctype(name, pubid, system[1:-1])
self._doctype = None
def doctype(self, name, pubid, system):
"""(Deprecated) Handle doctype declaration
*name* is the Doctype name, *pubid* is the public identifier,
and *system* is the system identifier.
"""
warnings.warn(
"This method of XMLParser is deprecated. Define doctype() "
"method on the TreeBuilder target.",
DeprecationWarning,
)
# sentinel, if doctype is redefined in a subclass
__doctype = doctype
def feed(self, data):
"""Feed encoded data to parser."""
try:
self.parser.Parse(data, 0)
except self._error as v:
self._raiseerror(v)
def close(self):
"""Finish feeding data to parser and return element structure."""
try:
self.parser.Parse("", 1) # end of data
except self._error as v:
self._raiseerror(v)
try:
close_handler = self.target.close
except AttributeError:
pass
else:
return close_handler()
finally:
# get rid of circular references
del self.parser, self._parser
del self.target, self._target
# Import the C accelerators
try:
# Element is going to be shadowed by the C implementation. We need to keep
# the Python version of it accessible for some "creative" by external code
# (see tests)
_Element_Py = Element
# Element, SubElement, ParseError, TreeBuilder, XMLParser
from _elementtree import *
except ImportError:
pass
| 57,029 | 1,657 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/etree/cElementTree.py | # Deprecated alias for xml.etree.ElementTree
from xml.etree.ElementTree import *
if __name__ == 'PYOBJ.COM':
Comment = 0
Element = 0
ElementTree = 0
PI = 0
ParseError = 0
ProcessingInstruction = 0
QName = 0
SubElement = 0
TreeBuilder = 0
VERSION = 0
XML = 0
XMLID = 0
XMLParser = 0
XMLPullParser = 0
dump = 0
fromstring = 0
fromstringlist = 0
iselement = 0
iterparse = 0
parse = 0
register_namespace = 0
tostring = 0
tostringlist = 0
| 528 | 29 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/etree/ElementPath.py | #
# ElementTree
# $Id: ElementPath.py 3375 2008-02-13 08:05:08Z fredrik $
#
# limited xpath support for element trees
#
# history:
# 2003-05-23 fl created
# 2003-05-28 fl added support for // etc
# 2003-08-27 fl fixed parsing of periods in element names
# 2007-09-10 fl new selection engine
# 2007-09-12 fl fixed parent selector
# 2007-09-13 fl added iterfind; changed findall to return a list
# 2007-11-30 fl added namespaces support
# 2009-10-30 fl added child element value filter
#
# Copyright (c) 2003-2009 by Fredrik Lundh. All rights reserved.
#
# [email protected]
# http://www.pythonware.com
#
# --------------------------------------------------------------------
# The ElementTree toolkit is
#
# Copyright (c) 1999-2009 by Fredrik Lundh
#
# By obtaining, using, and/or copying this software and/or its
# associated documentation, you agree that you have read, understood,
# and will comply with the following terms and conditions:
#
# Permission to use, copy, modify, and distribute this software and
# its associated documentation for any purpose and without fee is
# hereby granted, provided that the above copyright notice appears in
# all copies, and that both that copyright notice and this permission
# notice appear in supporting documentation, and that the name of
# Secret Labs AB or the author not be used in advertising or publicity
# pertaining to distribution of the software without specific, written
# prior permission.
#
# SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
# TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT-
# ABILITY AND FITNESS. IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR
# BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
# --------------------------------------------------------------------
# Licensed to PSF under a Contributor Agreement.
# See http://www.python.org/psf/license for licensing details.
##
# Implementation module for XPath support. There's usually no reason
# to import this module directly; the <b>ElementTree</b> does this for
# you, if needed.
##
import re
xpath_tokenizer_re = re.compile(
r"("
r"'[^']*'|\"[^\"]*\"|"
r"::|"
r"//?|"
r"\.\.|"
r"\(\)|"
r"[/.*:\[\]\(\)@=])|"
r"((?:\{[^}]+\})?[^/\[\]\(\)@=\s]+)|"
r"\s+"
)
def xpath_tokenizer(pattern, namespaces=None):
for token in xpath_tokenizer_re.findall(pattern):
tag = token[1]
if tag and tag[0] != "{" and ":" in tag:
try:
prefix, uri = tag.split(":", 1)
if not namespaces:
raise KeyError
yield token[0], "{%s}%s" % (namespaces[prefix], uri)
except KeyError:
raise SyntaxError("prefix %r not found in prefix map" % prefix)
else:
yield token
def get_parent_map(context):
parent_map = context.parent_map
if parent_map is None:
context.parent_map = parent_map = {}
for p in context.root.iter():
for e in p:
parent_map[e] = p
return parent_map
def prepare_child(next, token):
tag = token[1]
def select(context, result):
for elem in result:
for e in elem:
if e.tag == tag:
yield e
return select
def prepare_star(next, token):
def select(context, result):
for elem in result:
yield from elem
return select
def prepare_self(next, token):
def select(context, result):
yield from result
return select
def prepare_descendant(next, token):
try:
token = next()
except StopIteration:
return
if token[0] == "*":
tag = "*"
elif not token[0]:
tag = token[1]
else:
raise SyntaxError("invalid descendant")
def select(context, result):
for elem in result:
for e in elem.iter(tag):
if e is not elem:
yield e
return select
def prepare_parent(next, token):
def select(context, result):
# FIXME: raise error if .. is applied at toplevel?
parent_map = get_parent_map(context)
result_map = {}
for elem in result:
if elem in parent_map:
parent = parent_map[elem]
if parent not in result_map:
result_map[parent] = None
yield parent
return select
def prepare_predicate(next, token):
# FIXME: replace with real parser!!! refs:
# http://effbot.org/zone/simple-iterator-parser.htm
# http://javascript.crockford.com/tdop/tdop.html
signature = []
predicate = []
while 1:
try:
token = next()
except StopIteration:
return
if token[0] == "]":
break
if token[0] and token[0][:1] in "'\"":
token = "'", token[0][1:-1]
signature.append(token[0] or "-")
predicate.append(token[1])
signature = "".join(signature)
# use signature to determine predicate type
if signature == "@-":
# [@attribute] predicate
key = predicate[1]
def select(context, result):
for elem in result:
if elem.get(key) is not None:
yield elem
return select
if signature == "@-='":
# [@attribute='value']
key = predicate[1]
value = predicate[-1]
def select(context, result):
for elem in result:
if elem.get(key) == value:
yield elem
return select
if signature == "-" and not re.match(r"\-?\d+$", predicate[0]):
# [tag]
tag = predicate[0]
def select(context, result):
for elem in result:
if elem.find(tag) is not None:
yield elem
return select
if signature == "-='" and not re.match(r"\-?\d+$", predicate[0]):
# [tag='value']
tag = predicate[0]
value = predicate[-1]
def select(context, result):
for elem in result:
for e in elem.findall(tag):
if "".join(e.itertext()) == value:
yield elem
break
return select
if signature == "-" or signature == "-()" or signature == "-()-":
# [index] or [last()] or [last()-index]
if signature == "-":
# [index]
index = int(predicate[0]) - 1
if index < 0:
raise SyntaxError("XPath position >= 1 expected")
else:
if predicate[0] != "last":
raise SyntaxError("unsupported function")
if signature == "-()-":
try:
index = int(predicate[2]) - 1
except ValueError:
raise SyntaxError("unsupported expression")
if index > -2:
raise SyntaxError("XPath offset from last() must be negative")
else:
index = -1
def select(context, result):
parent_map = get_parent_map(context)
for elem in result:
try:
parent = parent_map[elem]
# FIXME: what if the selector is "*" ?
elems = list(parent.findall(elem.tag))
if elems[index] is elem:
yield elem
except (IndexError, KeyError):
pass
return select
raise SyntaxError("invalid predicate")
ops = {
"": prepare_child,
"*": prepare_star,
".": prepare_self,
"..": prepare_parent,
"//": prepare_descendant,
"[": prepare_predicate,
}
_cache = {}
class _SelectorContext:
parent_map = None
def __init__(self, root):
self.root = root
# --------------------------------------------------------------------
##
# Generate all matching objects.
def iterfind(elem, path, namespaces=None):
# compile selector pattern
cache_key = (path, None if namespaces is None
else tuple(sorted(namespaces.items())))
if path[-1:] == "/":
path = path + "*" # implicit all (FIXME: keep this?)
try:
selector = _cache[cache_key]
except KeyError:
if len(_cache) > 100:
_cache.clear()
if path[:1] == "/":
raise SyntaxError("cannot use absolute path on element")
next = iter(xpath_tokenizer(path, namespaces)).__next__
try:
token = next()
except StopIteration:
return
selector = []
while 1:
try:
selector.append(ops[token[0]](next, token))
except StopIteration:
raise SyntaxError("invalid path")
try:
token = next()
if token[0] == "/":
token = next()
except StopIteration:
break
_cache[cache_key] = selector
# execute selector pattern
result = [elem]
context = _SelectorContext(elem)
for select in selector:
result = select(context, result)
return result
##
# Find first matching object.
def find(elem, path, namespaces=None):
return next(iterfind(elem, path, namespaces), None)
##
# Find all matching objects.
def findall(elem, path, namespaces=None):
return list(iterfind(elem, path, namespaces))
##
# Find text for first matching object.
def findtext(elem, path, default=None, namespaces=None):
try:
elem = next(iterfind(elem, path, namespaces))
return elem.text or ""
except StopIteration:
return default
| 9,935 | 315 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/etree/ElementInclude.py | #
# ElementTree
# $Id: ElementInclude.py 3375 2008-02-13 08:05:08Z fredrik $
#
# limited xinclude support for element trees
#
# history:
# 2003-08-15 fl created
# 2003-11-14 fl fixed default loader
#
# Copyright (c) 2003-2004 by Fredrik Lundh. All rights reserved.
#
# [email protected]
# http://www.pythonware.com
#
# --------------------------------------------------------------------
# The ElementTree toolkit is
#
# Copyright (c) 1999-2008 by Fredrik Lundh
#
# By obtaining, using, and/or copying this software and/or its
# associated documentation, you agree that you have read, understood,
# and will comply with the following terms and conditions:
#
# Permission to use, copy, modify, and distribute this software and
# its associated documentation for any purpose and without fee is
# hereby granted, provided that the above copyright notice appears in
# all copies, and that both that copyright notice and this permission
# notice appear in supporting documentation, and that the name of
# Secret Labs AB or the author not be used in advertising or publicity
# pertaining to distribution of the software without specific, written
# prior permission.
#
# SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
# TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT-
# ABILITY AND FITNESS. IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR
# BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
# --------------------------------------------------------------------
# Licensed to PSF under a Contributor Agreement.
# See http://www.python.org/psf/license for licensing details.
##
# Limited XInclude support for the ElementTree package.
##
import copy
from . import ElementTree
XINCLUDE = "{http://www.w3.org/2001/XInclude}"
XINCLUDE_INCLUDE = XINCLUDE + "include"
XINCLUDE_FALLBACK = XINCLUDE + "fallback"
##
# Fatal include error.
class FatalIncludeError(SyntaxError):
pass
##
# Default loader. This loader reads an included resource from disk.
#
# @param href Resource reference.
# @param parse Parse mode. Either "xml" or "text".
# @param encoding Optional text encoding (UTF-8 by default for "text").
# @return The expanded resource. If the parse mode is "xml", this
# is an ElementTree instance. If the parse mode is "text", this
# is a Unicode string. If the loader fails, it can return None
# or raise an OSError exception.
# @throws OSError If the loader fails to load the resource.
def default_loader(href, parse, encoding=None):
if parse == "xml":
with open(href, 'rb') as file:
data = ElementTree.parse(file).getroot()
else:
if not encoding:
encoding = 'UTF-8'
with open(href, 'r', encoding=encoding) as file:
data = file.read()
return data
##
# Expand XInclude directives.
#
# @param elem Root element.
# @param loader Optional resource loader. If omitted, it defaults
# to {@link default_loader}. If given, it should be a callable
# that implements the same interface as <b>default_loader</b>.
# @throws FatalIncludeError If the function fails to include a given
# resource, or if the tree contains malformed XInclude elements.
# @throws OSError If the function fails to load a given resource.
def include(elem, loader=None):
if loader is None:
loader = default_loader
# look for xinclude elements
i = 0
while i < len(elem):
e = elem[i]
if e.tag == XINCLUDE_INCLUDE:
# process xinclude directive
href = e.get("href")
parse = e.get("parse", "xml")
if parse == "xml":
node = loader(href, parse)
if node is None:
raise FatalIncludeError(
"cannot load %r as %r" % (href, parse)
)
node = copy.copy(node)
if e.tail:
node.tail = (node.tail or "") + e.tail
elem[i] = node
elif parse == "text":
text = loader(href, parse, e.get("encoding"))
if text is None:
raise FatalIncludeError(
"cannot load %r as %r" % (href, parse)
)
if i:
node = elem[i-1]
node.tail = (node.tail or "") + text + (e.tail or "")
else:
elem.text = (elem.text or "") + text + (e.tail or "")
del elem[i]
continue
else:
raise FatalIncludeError(
"unknown parse type in xi:include tag (%r)" % parse
)
elif e.tag == XINCLUDE_FALLBACK:
raise FatalIncludeError(
"xi:fallback tag must be child of xi:include (%r)" % e.tag
)
else:
include(e, loader)
i = i + 1
| 5,151 | 144 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/etree/__init__.py | # $Id: __init__.py 3375 2008-02-13 08:05:08Z fredrik $
# elementtree package
# --------------------------------------------------------------------
# The ElementTree toolkit is
#
# Copyright (c) 1999-2008 by Fredrik Lundh
#
# By obtaining, using, and/or copying this software and/or its
# associated documentation, you agree that you have read, understood,
# and will comply with the following terms and conditions:
#
# Permission to use, copy, modify, and distribute this software and
# its associated documentation for any purpose and without fee is
# hereby granted, provided that the above copyright notice appears in
# all copies, and that both that copyright notice and this permission
# notice appear in supporting documentation, and that the name of
# Secret Labs AB or the author not be used in advertising or publicity
# pertaining to distribution of the software without specific, written
# prior permission.
#
# SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
# TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT-
# ABILITY AND FITNESS. IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR
# BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
# --------------------------------------------------------------------
# Licensed to PSF under a Contributor Agreement.
# See http://www.python.org/psf/license for licensing details.
| 1,604 | 34 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/dom/expatbuilder.py | """Facility to use the Expat parser to load a minidom instance
from a string or file.
This avoids all the overhead of SAX and pulldom to gain performance.
"""
# Warning!
#
# This module is tightly bound to the implementation details of the
# minidom DOM and can't be used with other DOM implementations. This
# is due, in part, to a lack of appropriate methods in the DOM (there is
# no way to create Entity and Notation nodes via the DOM Level 2
# interface), and for performance. The latter is the cause of some fairly
# cryptic code.
#
# Performance hacks:
#
# - .character_data_handler() has an extra case in which continuing
# data is appended to an existing Text node; this can be a
# speedup since pyexpat can break up character data into multiple
# callbacks even though we set the buffer_text attribute on the
# parser. This also gives us the advantage that we don't need a
# separate normalization pass.
#
# - Determining that a node exists is done using an identity comparison
# with None rather than a truth test; this avoids searching for and
# calling any methods on the node object if it exists. (A rather
# nice speedup is achieved this way as well!)
from xml.dom import xmlbuilder, minidom, Node
from xml.dom import EMPTY_NAMESPACE, EMPTY_PREFIX, XMLNS_NAMESPACE
from xml.parsers import expat
from xml.dom.minidom import _append_child, _set_attribute_node
from xml.dom.NodeFilter import NodeFilter
TEXT_NODE = Node.TEXT_NODE
CDATA_SECTION_NODE = Node.CDATA_SECTION_NODE
DOCUMENT_NODE = Node.DOCUMENT_NODE
FILTER_ACCEPT = xmlbuilder.DOMBuilderFilter.FILTER_ACCEPT
FILTER_REJECT = xmlbuilder.DOMBuilderFilter.FILTER_REJECT
FILTER_SKIP = xmlbuilder.DOMBuilderFilter.FILTER_SKIP
FILTER_INTERRUPT = xmlbuilder.DOMBuilderFilter.FILTER_INTERRUPT
theDOMImplementation = minidom.getDOMImplementation()
# Expat typename -> TypeInfo
_typeinfo_map = {
"CDATA": minidom.TypeInfo(None, "cdata"),
"ENUM": minidom.TypeInfo(None, "enumeration"),
"ENTITY": minidom.TypeInfo(None, "entity"),
"ENTITIES": minidom.TypeInfo(None, "entities"),
"ID": minidom.TypeInfo(None, "id"),
"IDREF": minidom.TypeInfo(None, "idref"),
"IDREFS": minidom.TypeInfo(None, "idrefs"),
"NMTOKEN": minidom.TypeInfo(None, "nmtoken"),
"NMTOKENS": minidom.TypeInfo(None, "nmtokens"),
}
class ElementInfo(object):
__slots__ = '_attr_info', '_model', 'tagName'
def __init__(self, tagName, model=None):
self.tagName = tagName
self._attr_info = []
self._model = model
def __getstate__(self):
return self._attr_info, self._model, self.tagName
def __setstate__(self, state):
self._attr_info, self._model, self.tagName = state
def getAttributeType(self, aname):
for info in self._attr_info:
if info[1] == aname:
t = info[-2]
if t[0] == "(":
return _typeinfo_map["ENUM"]
else:
return _typeinfo_map[info[-2]]
return minidom._no_type
def getAttributeTypeNS(self, namespaceURI, localName):
return minidom._no_type
def isElementContent(self):
if self._model:
type = self._model[0]
return type not in (expat.model.XML_CTYPE_ANY,
expat.model.XML_CTYPE_MIXED)
else:
return False
def isEmpty(self):
if self._model:
return self._model[0] == expat.model.XML_CTYPE_EMPTY
else:
return False
def isId(self, aname):
for info in self._attr_info:
if info[1] == aname:
return info[-2] == "ID"
return False
def isIdNS(self, euri, ename, auri, aname):
# not sure this is meaningful
return self.isId((auri, aname))
def _intern(builder, s):
return builder._intern_setdefault(s, s)
def _parse_ns_name(builder, name):
assert ' ' in name
parts = name.split(' ')
intern = builder._intern_setdefault
if len(parts) == 3:
uri, localname, prefix = parts
prefix = intern(prefix, prefix)
qname = "%s:%s" % (prefix, localname)
qname = intern(qname, qname)
localname = intern(localname, localname)
elif len(parts) == 2:
uri, localname = parts
prefix = EMPTY_PREFIX
qname = localname = intern(localname, localname)
else:
raise ValueError("Unsupported syntax: spaces in URIs not supported: %r" % name)
return intern(uri, uri), localname, prefix, qname
class ExpatBuilder:
"""Document builder that uses Expat to build a ParsedXML.DOM document
instance."""
def __init__(self, options=None):
if options is None:
options = xmlbuilder.Options()
self._options = options
if self._options.filter is not None:
self._filter = FilterVisibilityController(self._options.filter)
else:
self._filter = None
# This *really* doesn't do anything in this case, so
# override it with something fast & minimal.
self._finish_start_element = id
self._parser = None
self.reset()
def createParser(self):
"""Create a new parser object."""
return expat.ParserCreate()
def getParser(self):
"""Return the parser object, creating a new one if needed."""
if not self._parser:
self._parser = self.createParser()
self._intern_setdefault = self._parser.intern.setdefault
self._parser.buffer_text = True
self._parser.ordered_attributes = True
self._parser.specified_attributes = True
self.install(self._parser)
return self._parser
def reset(self):
"""Free all data structures used during DOM construction."""
self.document = theDOMImplementation.createDocument(
EMPTY_NAMESPACE, None, None)
self.curNode = self.document
self._elem_info = self.document._elem_info
self._cdata = False
def install(self, parser):
"""Install the callbacks needed to build the DOM into the parser."""
# This creates circular references!
parser.StartDoctypeDeclHandler = self.start_doctype_decl_handler
parser.StartElementHandler = self.first_element_handler
parser.EndElementHandler = self.end_element_handler
parser.ProcessingInstructionHandler = self.pi_handler
if self._options.entities:
parser.EntityDeclHandler = self.entity_decl_handler
parser.NotationDeclHandler = self.notation_decl_handler
if self._options.comments:
parser.CommentHandler = self.comment_handler
if self._options.cdata_sections:
parser.StartCdataSectionHandler = self.start_cdata_section_handler
parser.EndCdataSectionHandler = self.end_cdata_section_handler
parser.CharacterDataHandler = self.character_data_handler_cdata
else:
parser.CharacterDataHandler = self.character_data_handler
parser.ExternalEntityRefHandler = self.external_entity_ref_handler
parser.XmlDeclHandler = self.xml_decl_handler
parser.ElementDeclHandler = self.element_decl_handler
parser.AttlistDeclHandler = self.attlist_decl_handler
def parseFile(self, file):
"""Parse a document from a file object, returning the document
node."""
parser = self.getParser()
first_buffer = True
try:
while 1:
buffer = file.read(16*1024)
if not buffer:
break
parser.Parse(buffer, 0)
if first_buffer and self.document.documentElement:
self._setup_subset(buffer)
first_buffer = False
parser.Parse("", True)
except ParseEscape:
pass
doc = self.document
self.reset()
self._parser = None
return doc
def parseString(self, string):
"""Parse a document from a string, returning the document node."""
parser = self.getParser()
try:
parser.Parse(string, True)
self._setup_subset(string)
except ParseEscape:
pass
doc = self.document
self.reset()
self._parser = None
return doc
def _setup_subset(self, buffer):
"""Load the internal subset if there might be one."""
if self.document.doctype:
extractor = InternalSubsetExtractor()
extractor.parseString(buffer)
subset = extractor.getSubset()
self.document.doctype.internalSubset = subset
def start_doctype_decl_handler(self, doctypeName, systemId, publicId,
has_internal_subset):
doctype = self.document.implementation.createDocumentType(
doctypeName, publicId, systemId)
doctype.ownerDocument = self.document
_append_child(self.document, doctype)
self.document.doctype = doctype
if self._filter and self._filter.acceptNode(doctype) == FILTER_REJECT:
self.document.doctype = None
del self.document.childNodes[-1]
doctype = None
self._parser.EntityDeclHandler = None
self._parser.NotationDeclHandler = None
if has_internal_subset:
if doctype is not None:
doctype.entities._seq = []
doctype.notations._seq = []
self._parser.CommentHandler = None
self._parser.ProcessingInstructionHandler = None
self._parser.EndDoctypeDeclHandler = self.end_doctype_decl_handler
def end_doctype_decl_handler(self):
if self._options.comments:
self._parser.CommentHandler = self.comment_handler
self._parser.ProcessingInstructionHandler = self.pi_handler
if not (self._elem_info or self._filter):
self._finish_end_element = id
def pi_handler(self, target, data):
node = self.document.createProcessingInstruction(target, data)
_append_child(self.curNode, node)
if self._filter and self._filter.acceptNode(node) == FILTER_REJECT:
self.curNode.removeChild(node)
def character_data_handler_cdata(self, data):
childNodes = self.curNode.childNodes
if self._cdata:
if ( self._cdata_continue
and childNodes[-1].nodeType == CDATA_SECTION_NODE):
childNodes[-1].appendData(data)
return
node = self.document.createCDATASection(data)
self._cdata_continue = True
elif childNodes and childNodes[-1].nodeType == TEXT_NODE:
node = childNodes[-1]
value = node.data + data
node.data = value
return
else:
node = minidom.Text()
node.data = data
node.ownerDocument = self.document
_append_child(self.curNode, node)
def character_data_handler(self, data):
childNodes = self.curNode.childNodes
if childNodes and childNodes[-1].nodeType == TEXT_NODE:
node = childNodes[-1]
node.data = node.data + data
return
node = minidom.Text()
node.data = node.data + data
node.ownerDocument = self.document
_append_child(self.curNode, node)
def entity_decl_handler(self, entityName, is_parameter_entity, value,
base, systemId, publicId, notationName):
if is_parameter_entity:
# we don't care about parameter entities for the DOM
return
if not self._options.entities:
return
node = self.document._create_entity(entityName, publicId,
systemId, notationName)
if value is not None:
# internal entity
# node *should* be readonly, but we'll cheat
child = self.document.createTextNode(value)
node.childNodes.append(child)
self.document.doctype.entities._seq.append(node)
if self._filter and self._filter.acceptNode(node) == FILTER_REJECT:
del self.document.doctype.entities._seq[-1]
def notation_decl_handler(self, notationName, base, systemId, publicId):
node = self.document._create_notation(notationName, publicId, systemId)
self.document.doctype.notations._seq.append(node)
if self._filter and self._filter.acceptNode(node) == FILTER_ACCEPT:
del self.document.doctype.notations._seq[-1]
def comment_handler(self, data):
node = self.document.createComment(data)
_append_child(self.curNode, node)
if self._filter and self._filter.acceptNode(node) == FILTER_REJECT:
self.curNode.removeChild(node)
def start_cdata_section_handler(self):
self._cdata = True
self._cdata_continue = False
def end_cdata_section_handler(self):
self._cdata = False
self._cdata_continue = False
def external_entity_ref_handler(self, context, base, systemId, publicId):
return 1
def first_element_handler(self, name, attributes):
if self._filter is None and not self._elem_info:
self._finish_end_element = id
self.getParser().StartElementHandler = self.start_element_handler
self.start_element_handler(name, attributes)
def start_element_handler(self, name, attributes):
node = self.document.createElement(name)
_append_child(self.curNode, node)
self.curNode = node
if attributes:
for i in range(0, len(attributes), 2):
a = minidom.Attr(attributes[i], EMPTY_NAMESPACE,
None, EMPTY_PREFIX)
value = attributes[i+1]
a.value = value
a.ownerDocument = self.document
_set_attribute_node(node, a)
if node is not self.document.documentElement:
self._finish_start_element(node)
def _finish_start_element(self, node):
if self._filter:
# To be general, we'd have to call isSameNode(), but this
# is sufficient for minidom:
if node is self.document.documentElement:
return
filt = self._filter.startContainer(node)
if filt == FILTER_REJECT:
# ignore this node & all descendents
Rejecter(self)
elif filt == FILTER_SKIP:
# ignore this node, but make it's children become
# children of the parent node
Skipper(self)
else:
return
self.curNode = node.parentNode
node.parentNode.removeChild(node)
node.unlink()
# If this ever changes, Namespaces.end_element_handler() needs to
# be changed to match.
#
def end_element_handler(self, name):
curNode = self.curNode
self.curNode = curNode.parentNode
self._finish_end_element(curNode)
def _finish_end_element(self, curNode):
info = self._elem_info.get(curNode.tagName)
if info:
self._handle_white_text_nodes(curNode, info)
if self._filter:
if curNode is self.document.documentElement:
return
if self._filter.acceptNode(curNode) == FILTER_REJECT:
self.curNode.removeChild(curNode)
curNode.unlink()
def _handle_white_text_nodes(self, node, info):
if (self._options.whitespace_in_element_content
or not info.isElementContent()):
return
# We have element type information and should remove ignorable
# whitespace; identify for text nodes which contain only
# whitespace.
L = []
for child in node.childNodes:
if child.nodeType == TEXT_NODE and not child.data.strip():
L.append(child)
# Remove ignorable whitespace from the tree.
for child in L:
node.removeChild(child)
def element_decl_handler(self, name, model):
info = self._elem_info.get(name)
if info is None:
self._elem_info[name] = ElementInfo(name, model)
else:
assert info._model is None
info._model = model
def attlist_decl_handler(self, elem, name, type, default, required):
info = self._elem_info.get(elem)
if info is None:
info = ElementInfo(elem)
self._elem_info[elem] = info
info._attr_info.append(
[None, name, None, None, default, 0, type, required])
def xml_decl_handler(self, version, encoding, standalone):
self.document.version = version
self.document.encoding = encoding
# This is still a little ugly, thanks to the pyexpat API. ;-(
if standalone >= 0:
if standalone:
self.document.standalone = True
else:
self.document.standalone = False
# Don't include FILTER_INTERRUPT, since that's checked separately
# where allowed.
_ALLOWED_FILTER_RETURNS = (FILTER_ACCEPT, FILTER_REJECT, FILTER_SKIP)
class FilterVisibilityController(object):
"""Wrapper around a DOMBuilderFilter which implements the checks
to make the whatToShow filter attribute work."""
__slots__ = 'filter',
def __init__(self, filter):
self.filter = filter
def startContainer(self, node):
mask = self._nodetype_mask[node.nodeType]
if self.filter.whatToShow & mask:
val = self.filter.startContainer(node)
if val == FILTER_INTERRUPT:
raise ParseEscape
if val not in _ALLOWED_FILTER_RETURNS:
raise ValueError(
"startContainer() returned illegal value: " + repr(val))
return val
else:
return FILTER_ACCEPT
def acceptNode(self, node):
mask = self._nodetype_mask[node.nodeType]
if self.filter.whatToShow & mask:
val = self.filter.acceptNode(node)
if val == FILTER_INTERRUPT:
raise ParseEscape
if val == FILTER_SKIP:
# move all child nodes to the parent, and remove this node
parent = node.parentNode
for child in node.childNodes[:]:
parent.appendChild(child)
# node is handled by the caller
return FILTER_REJECT
if val not in _ALLOWED_FILTER_RETURNS:
raise ValueError(
"acceptNode() returned illegal value: " + repr(val))
return val
else:
return FILTER_ACCEPT
_nodetype_mask = {
Node.ELEMENT_NODE: NodeFilter.SHOW_ELEMENT,
Node.ATTRIBUTE_NODE: NodeFilter.SHOW_ATTRIBUTE,
Node.TEXT_NODE: NodeFilter.SHOW_TEXT,
Node.CDATA_SECTION_NODE: NodeFilter.SHOW_CDATA_SECTION,
Node.ENTITY_REFERENCE_NODE: NodeFilter.SHOW_ENTITY_REFERENCE,
Node.ENTITY_NODE: NodeFilter.SHOW_ENTITY,
Node.PROCESSING_INSTRUCTION_NODE: NodeFilter.SHOW_PROCESSING_INSTRUCTION,
Node.COMMENT_NODE: NodeFilter.SHOW_COMMENT,
Node.DOCUMENT_NODE: NodeFilter.SHOW_DOCUMENT,
Node.DOCUMENT_TYPE_NODE: NodeFilter.SHOW_DOCUMENT_TYPE,
Node.DOCUMENT_FRAGMENT_NODE: NodeFilter.SHOW_DOCUMENT_FRAGMENT,
Node.NOTATION_NODE: NodeFilter.SHOW_NOTATION,
}
class FilterCrutch(object):
__slots__ = '_builder', '_level', '_old_start', '_old_end'
def __init__(self, builder):
self._level = 0
self._builder = builder
parser = builder._parser
self._old_start = parser.StartElementHandler
self._old_end = parser.EndElementHandler
parser.StartElementHandler = self.start_element_handler
parser.EndElementHandler = self.end_element_handler
class Rejecter(FilterCrutch):
__slots__ = ()
def __init__(self, builder):
FilterCrutch.__init__(self, builder)
parser = builder._parser
for name in ("ProcessingInstructionHandler",
"CommentHandler",
"CharacterDataHandler",
"StartCdataSectionHandler",
"EndCdataSectionHandler",
"ExternalEntityRefHandler",
):
setattr(parser, name, None)
def start_element_handler(self, *args):
self._level = self._level + 1
def end_element_handler(self, *args):
if self._level == 0:
# restore the old handlers
parser = self._builder._parser
self._builder.install(parser)
parser.StartElementHandler = self._old_start
parser.EndElementHandler = self._old_end
else:
self._level = self._level - 1
class Skipper(FilterCrutch):
__slots__ = ()
def start_element_handler(self, *args):
node = self._builder.curNode
self._old_start(*args)
if self._builder.curNode is not node:
self._level = self._level + 1
def end_element_handler(self, *args):
if self._level == 0:
# We're popping back out of the node we're skipping, so we
# shouldn't need to do anything but reset the handlers.
self._builder._parser.StartElementHandler = self._old_start
self._builder._parser.EndElementHandler = self._old_end
self._builder = None
else:
self._level = self._level - 1
self._old_end(*args)
# framework document used by the fragment builder.
# Takes a string for the doctype, subset string, and namespace attrs string.
_FRAGMENT_BUILDER_INTERNAL_SYSTEM_ID = \
"http://xml.python.org/entities/fragment-builder/internal"
_FRAGMENT_BUILDER_TEMPLATE = (
'''\
<!DOCTYPE wrapper
%%s [
<!ENTITY fragment-builder-internal
SYSTEM "%s">
%%s
]>
<wrapper %%s
>&fragment-builder-internal;</wrapper>'''
% _FRAGMENT_BUILDER_INTERNAL_SYSTEM_ID)
class FragmentBuilder(ExpatBuilder):
"""Builder which constructs document fragments given XML source
text and a context node.
The context node is expected to provide information about the
namespace declarations which are in scope at the start of the
fragment.
"""
def __init__(self, context, options=None):
if context.nodeType == DOCUMENT_NODE:
self.originalDocument = context
self.context = context
else:
self.originalDocument = context.ownerDocument
self.context = context
ExpatBuilder.__init__(self, options)
def reset(self):
ExpatBuilder.reset(self)
self.fragment = None
def parseFile(self, file):
"""Parse a document fragment from a file object, returning the
fragment node."""
return self.parseString(file.read())
def parseString(self, string):
"""Parse a document fragment from a string, returning the
fragment node."""
self._source = string
parser = self.getParser()
doctype = self.originalDocument.doctype
ident = ""
if doctype:
subset = doctype.internalSubset or self._getDeclarations()
if doctype.publicId:
ident = ('PUBLIC "%s" "%s"'
% (doctype.publicId, doctype.systemId))
elif doctype.systemId:
ident = 'SYSTEM "%s"' % doctype.systemId
else:
subset = ""
nsattrs = self._getNSattrs() # get ns decls from node's ancestors
document = _FRAGMENT_BUILDER_TEMPLATE % (ident, subset, nsattrs)
try:
parser.Parse(document, 1)
except:
self.reset()
raise
fragment = self.fragment
self.reset()
## self._parser = None
return fragment
def _getDeclarations(self):
"""Re-create the internal subset from the DocumentType node.
This is only needed if we don't already have the
internalSubset as a string.
"""
doctype = self.context.ownerDocument.doctype
s = ""
if doctype:
for i in range(doctype.notations.length):
notation = doctype.notations.item(i)
if s:
s = s + "\n "
s = "%s<!NOTATION %s" % (s, notation.nodeName)
if notation.publicId:
s = '%s PUBLIC "%s"\n "%s">' \
% (s, notation.publicId, notation.systemId)
else:
s = '%s SYSTEM "%s">' % (s, notation.systemId)
for i in range(doctype.entities.length):
entity = doctype.entities.item(i)
if s:
s = s + "\n "
s = "%s<!ENTITY %s" % (s, entity.nodeName)
if entity.publicId:
s = '%s PUBLIC "%s"\n "%s"' \
% (s, entity.publicId, entity.systemId)
elif entity.systemId:
s = '%s SYSTEM "%s"' % (s, entity.systemId)
else:
s = '%s "%s"' % (s, entity.firstChild.data)
if entity.notationName:
s = "%s NOTATION %s" % (s, entity.notationName)
s = s + ">"
return s
def _getNSattrs(self):
return ""
def external_entity_ref_handler(self, context, base, systemId, publicId):
if systemId == _FRAGMENT_BUILDER_INTERNAL_SYSTEM_ID:
# this entref is the one that we made to put the subtree
# in; all of our given input is parsed in here.
old_document = self.document
old_cur_node = self.curNode
parser = self._parser.ExternalEntityParserCreate(context)
# put the real document back, parse into the fragment to return
self.document = self.originalDocument
self.fragment = self.document.createDocumentFragment()
self.curNode = self.fragment
try:
parser.Parse(self._source, 1)
finally:
self.curNode = old_cur_node
self.document = old_document
self._source = None
return -1
else:
return ExpatBuilder.external_entity_ref_handler(
self, context, base, systemId, publicId)
class Namespaces:
"""Mix-in class for builders; adds support for namespaces."""
def _initNamespaces(self):
# list of (prefix, uri) ns declarations. Namespace attrs are
# constructed from this and added to the element's attrs.
self._ns_ordered_prefixes = []
def createParser(self):
"""Create a new namespace-handling parser."""
parser = expat.ParserCreate(namespace_separator=" ")
parser.namespace_prefixes = True
return parser
def install(self, parser):
"""Insert the namespace-handlers onto the parser."""
ExpatBuilder.install(self, parser)
if self._options.namespace_declarations:
parser.StartNamespaceDeclHandler = (
self.start_namespace_decl_handler)
def start_namespace_decl_handler(self, prefix, uri):
"""Push this namespace declaration on our storage."""
self._ns_ordered_prefixes.append((prefix, uri))
def start_element_handler(self, name, attributes):
if ' ' in name:
uri, localname, prefix, qname = _parse_ns_name(self, name)
else:
uri = EMPTY_NAMESPACE
qname = name
localname = None
prefix = EMPTY_PREFIX
node = minidom.Element(qname, uri, prefix, localname)
node.ownerDocument = self.document
_append_child(self.curNode, node)
self.curNode = node
if self._ns_ordered_prefixes:
for prefix, uri in self._ns_ordered_prefixes:
if prefix:
a = minidom.Attr(_intern(self, 'xmlns:' + prefix),
XMLNS_NAMESPACE, prefix, "xmlns")
else:
a = minidom.Attr("xmlns", XMLNS_NAMESPACE,
"xmlns", EMPTY_PREFIX)
a.value = uri
a.ownerDocument = self.document
_set_attribute_node(node, a)
del self._ns_ordered_prefixes[:]
if attributes:
node._ensure_attributes()
_attrs = node._attrs
_attrsNS = node._attrsNS
for i in range(0, len(attributes), 2):
aname = attributes[i]
value = attributes[i+1]
if ' ' in aname:
uri, localname, prefix, qname = _parse_ns_name(self, aname)
a = minidom.Attr(qname, uri, localname, prefix)
_attrs[qname] = a
_attrsNS[(uri, localname)] = a
else:
a = minidom.Attr(aname, EMPTY_NAMESPACE,
aname, EMPTY_PREFIX)
_attrs[aname] = a
_attrsNS[(EMPTY_NAMESPACE, aname)] = a
a.ownerDocument = self.document
a.value = value
a.ownerElement = node
if __debug__:
# This only adds some asserts to the original
# end_element_handler(), so we only define this when -O is not
# used. If changing one, be sure to check the other to see if
# it needs to be changed as well.
#
def end_element_handler(self, name):
curNode = self.curNode
if ' ' in name:
uri, localname, prefix, qname = _parse_ns_name(self, name)
assert (curNode.namespaceURI == uri
and curNode.localName == localname
and curNode.prefix == prefix), \
"element stack messed up! (namespace)"
else:
assert curNode.nodeName == name, \
"element stack messed up - bad nodeName"
assert curNode.namespaceURI == EMPTY_NAMESPACE, \
"element stack messed up - bad namespaceURI"
self.curNode = curNode.parentNode
self._finish_end_element(curNode)
class ExpatBuilderNS(Namespaces, ExpatBuilder):
"""Document builder that supports namespaces."""
def reset(self):
ExpatBuilder.reset(self)
self._initNamespaces()
class FragmentBuilderNS(Namespaces, FragmentBuilder):
"""Fragment builder that supports namespaces."""
def reset(self):
FragmentBuilder.reset(self)
self._initNamespaces()
def _getNSattrs(self):
"""Return string of namespace attributes from this element and
ancestors."""
# XXX This needs to be re-written to walk the ancestors of the
# context to build up the namespace information from
# declarations, elements, and attributes found in context.
# Otherwise we have to store a bunch more data on the DOM
# (though that *might* be more reliable -- not clear).
attrs = ""
context = self.context
L = []
while context:
if hasattr(context, '_ns_prefix_uri'):
for prefix, uri in context._ns_prefix_uri.items():
# add every new NS decl from context to L and attrs string
if prefix in L:
continue
L.append(prefix)
if prefix:
declname = "xmlns:" + prefix
else:
declname = "xmlns"
if attrs:
attrs = "%s\n %s='%s'" % (attrs, declname, uri)
else:
attrs = " %s='%s'" % (declname, uri)
context = context.parentNode
return attrs
class ParseEscape(Exception):
"""Exception raised to short-circuit parsing in InternalSubsetExtractor."""
pass
class InternalSubsetExtractor(ExpatBuilder):
"""XML processor which can rip out the internal document type subset."""
subset = None
def getSubset(self):
"""Return the internal subset as a string."""
return self.subset
def parseFile(self, file):
try:
ExpatBuilder.parseFile(self, file)
except ParseEscape:
pass
def parseString(self, string):
try:
ExpatBuilder.parseString(self, string)
except ParseEscape:
pass
def install(self, parser):
parser.StartDoctypeDeclHandler = self.start_doctype_decl_handler
parser.StartElementHandler = self.start_element_handler
def start_doctype_decl_handler(self, name, publicId, systemId,
has_internal_subset):
if has_internal_subset:
parser = self.getParser()
self.subset = []
parser.DefaultHandler = self.subset.append
parser.EndDoctypeDeclHandler = self.end_doctype_decl_handler
else:
raise ParseEscape()
def end_doctype_decl_handler(self):
s = ''.join(self.subset).replace('\r\n', '\n').replace('\r', '\n')
self.subset = s
raise ParseEscape()
def start_element_handler(self, name, attrs):
raise ParseEscape()
def parse(file, namespaces=True):
"""Parse a document, returning the resulting Document node.
'file' may be either a file name or an open file object.
"""
if namespaces:
builder = ExpatBuilderNS()
else:
builder = ExpatBuilder()
if isinstance(file, str):
with open(file, 'rb') as fp:
result = builder.parseFile(fp)
else:
result = builder.parseFile(file)
return result
def parseString(string, namespaces=True):
"""Parse a document from a string, returning the resulting
Document node.
"""
if namespaces:
builder = ExpatBuilderNS()
else:
builder = ExpatBuilder()
return builder.parseString(string)
def parseFragment(file, context, namespaces=True):
"""Parse a fragment of a document, given the context from which it
was originally extracted. context should be the parent of the
node(s) which are in the fragment.
'file' may be either a file name or an open file object.
"""
if namespaces:
builder = FragmentBuilderNS(context)
else:
builder = FragmentBuilder(context)
if isinstance(file, str):
with open(file, 'rb') as fp:
result = builder.parseFile(fp)
else:
result = builder.parseFile(file)
return result
def parseFragmentString(string, context, namespaces=True):
"""Parse a fragment of a document from a string, given the context
from which it was originally extracted. context should be the
parent of the node(s) which are in the fragment.
"""
if namespaces:
builder = FragmentBuilderNS(context)
else:
builder = FragmentBuilder(context)
return builder.parseString(string)
def makeBuilder(options):
"""Create a builder based on an Options object."""
if options.namespaces:
return ExpatBuilderNS(options)
else:
return ExpatBuilder(options)
| 35,756 | 966 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/dom/NodeFilter.py | # This is the Python mapping for interface NodeFilter from
# DOM2-Traversal-Range. It contains only constants.
class NodeFilter:
"""
This is the DOM2 NodeFilter interface. It contains only constants.
"""
FILTER_ACCEPT = 1
FILTER_REJECT = 2
FILTER_SKIP = 3
SHOW_ALL = 0xFFFFFFFF
SHOW_ELEMENT = 0x00000001
SHOW_ATTRIBUTE = 0x00000002
SHOW_TEXT = 0x00000004
SHOW_CDATA_SECTION = 0x00000008
SHOW_ENTITY_REFERENCE = 0x00000010
SHOW_ENTITY = 0x00000020
SHOW_PROCESSING_INSTRUCTION = 0x00000040
SHOW_COMMENT = 0x00000080
SHOW_DOCUMENT = 0x00000100
SHOW_DOCUMENT_TYPE = 0x00000200
SHOW_DOCUMENT_FRAGMENT = 0x00000400
SHOW_NOTATION = 0x00000800
def acceptNode(self, node):
raise NotImplementedError
| 936 | 28 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/dom/pulldom.py | import xml.sax
import xml.sax.handler
START_ELEMENT = "START_ELEMENT"
END_ELEMENT = "END_ELEMENT"
COMMENT = "COMMENT"
START_DOCUMENT = "START_DOCUMENT"
END_DOCUMENT = "END_DOCUMENT"
PROCESSING_INSTRUCTION = "PROCESSING_INSTRUCTION"
IGNORABLE_WHITESPACE = "IGNORABLE_WHITESPACE"
CHARACTERS = "CHARACTERS"
class PullDOM(xml.sax.ContentHandler):
_locator = None
document = None
def __init__(self, documentFactory=None):
from xml.dom import XML_NAMESPACE
self.documentFactory = documentFactory
self.firstEvent = [None, None]
self.lastEvent = self.firstEvent
self.elementStack = []
self.push = self.elementStack.append
try:
self.pop = self.elementStack.pop
except AttributeError:
# use class' pop instead
pass
self._ns_contexts = [{XML_NAMESPACE:'xml'}] # contains uri -> prefix dicts
self._current_context = self._ns_contexts[-1]
self.pending_events = []
def pop(self):
result = self.elementStack[-1]
del self.elementStack[-1]
return result
def setDocumentLocator(self, locator):
self._locator = locator
def startPrefixMapping(self, prefix, uri):
if not hasattr(self, '_xmlns_attrs'):
self._xmlns_attrs = []
self._xmlns_attrs.append((prefix or 'xmlns', uri))
self._ns_contexts.append(self._current_context.copy())
self._current_context[uri] = prefix or None
def endPrefixMapping(self, prefix):
self._current_context = self._ns_contexts.pop()
def startElementNS(self, name, tagName , attrs):
# Retrieve xml namespace declaration attributes.
xmlns_uri = 'http://www.w3.org/2000/xmlns/'
xmlns_attrs = getattr(self, '_xmlns_attrs', None)
if xmlns_attrs is not None:
for aname, value in xmlns_attrs:
attrs._attrs[(xmlns_uri, aname)] = value
self._xmlns_attrs = []
uri, localname = name
if uri:
# When using namespaces, the reader may or may not
# provide us with the original name. If not, create
# *a* valid tagName from the current context.
if tagName is None:
prefix = self._current_context[uri]
if prefix:
tagName = prefix + ":" + localname
else:
tagName = localname
if self.document:
node = self.document.createElementNS(uri, tagName)
else:
node = self.buildDocument(uri, tagName)
else:
# When the tagname is not prefixed, it just appears as
# localname
if self.document:
node = self.document.createElement(localname)
else:
node = self.buildDocument(None, localname)
for aname,value in attrs.items():
a_uri, a_localname = aname
if a_uri == xmlns_uri:
if a_localname == 'xmlns':
qname = a_localname
else:
qname = 'xmlns:' + a_localname
attr = self.document.createAttributeNS(a_uri, qname)
node.setAttributeNodeNS(attr)
elif a_uri:
prefix = self._current_context[a_uri]
if prefix:
qname = prefix + ":" + a_localname
else:
qname = a_localname
attr = self.document.createAttributeNS(a_uri, qname)
node.setAttributeNodeNS(attr)
else:
attr = self.document.createAttribute(a_localname)
node.setAttributeNode(attr)
attr.value = value
self.lastEvent[1] = [(START_ELEMENT, node), None]
self.lastEvent = self.lastEvent[1]
self.push(node)
def endElementNS(self, name, tagName):
self.lastEvent[1] = [(END_ELEMENT, self.pop()), None]
self.lastEvent = self.lastEvent[1]
def startElement(self, name, attrs):
if self.document:
node = self.document.createElement(name)
else:
node = self.buildDocument(None, name)
for aname,value in attrs.items():
attr = self.document.createAttribute(aname)
attr.value = value
node.setAttributeNode(attr)
self.lastEvent[1] = [(START_ELEMENT, node), None]
self.lastEvent = self.lastEvent[1]
self.push(node)
def endElement(self, name):
self.lastEvent[1] = [(END_ELEMENT, self.pop()), None]
self.lastEvent = self.lastEvent[1]
def comment(self, s):
if self.document:
node = self.document.createComment(s)
self.lastEvent[1] = [(COMMENT, node), None]
self.lastEvent = self.lastEvent[1]
else:
event = [(COMMENT, s), None]
self.pending_events.append(event)
def processingInstruction(self, target, data):
if self.document:
node = self.document.createProcessingInstruction(target, data)
self.lastEvent[1] = [(PROCESSING_INSTRUCTION, node), None]
self.lastEvent = self.lastEvent[1]
else:
event = [(PROCESSING_INSTRUCTION, target, data), None]
self.pending_events.append(event)
def ignorableWhitespace(self, chars):
node = self.document.createTextNode(chars)
self.lastEvent[1] = [(IGNORABLE_WHITESPACE, node), None]
self.lastEvent = self.lastEvent[1]
def characters(self, chars):
node = self.document.createTextNode(chars)
self.lastEvent[1] = [(CHARACTERS, node), None]
self.lastEvent = self.lastEvent[1]
def startDocument(self):
if self.documentFactory is None:
import xml.dom.minidom
self.documentFactory = xml.dom.minidom.Document.implementation
def buildDocument(self, uri, tagname):
# Can't do that in startDocument, since we need the tagname
# XXX: obtain DocumentType
node = self.documentFactory.createDocument(uri, tagname, None)
self.document = node
self.lastEvent[1] = [(START_DOCUMENT, node), None]
self.lastEvent = self.lastEvent[1]
self.push(node)
# Put everything we have seen so far into the document
for e in self.pending_events:
if e[0][0] == PROCESSING_INSTRUCTION:
_,target,data = e[0]
n = self.document.createProcessingInstruction(target, data)
e[0] = (PROCESSING_INSTRUCTION, n)
elif e[0][0] == COMMENT:
n = self.document.createComment(e[0][1])
e[0] = (COMMENT, n)
else:
raise AssertionError("Unknown pending event ",e[0][0])
self.lastEvent[1] = e
self.lastEvent = e
self.pending_events = None
return node.firstChild
def endDocument(self):
self.lastEvent[1] = [(END_DOCUMENT, self.document), None]
self.pop()
def clear(self):
"clear(): Explicitly release parsing structures"
self.document = None
class ErrorHandler:
def warning(self, exception):
print(exception)
def error(self, exception):
raise exception
def fatalError(self, exception):
raise exception
class DOMEventStream:
def __init__(self, stream, parser, bufsize):
self.stream = stream
self.parser = parser
self.bufsize = bufsize
if not hasattr(self.parser, 'feed'):
self.getEvent = self._slurp
self.reset()
def reset(self):
self.pulldom = PullDOM()
# This content handler relies on namespace support
self.parser.setFeature(xml.sax.handler.feature_namespaces, 1)
self.parser.setContentHandler(self.pulldom)
def __getitem__(self, pos):
rc = self.getEvent()
if rc:
return rc
raise IndexError
def __next__(self):
rc = self.getEvent()
if rc:
return rc
raise StopIteration
def __iter__(self):
return self
def expandNode(self, node):
event = self.getEvent()
parents = [node]
while event:
token, cur_node = event
if cur_node is node:
return
if token != END_ELEMENT:
parents[-1].appendChild(cur_node)
if token == START_ELEMENT:
parents.append(cur_node)
elif token == END_ELEMENT:
del parents[-1]
event = self.getEvent()
def getEvent(self):
# use IncrementalParser interface, so we get the desired
# pull effect
if not self.pulldom.firstEvent[1]:
self.pulldom.lastEvent = self.pulldom.firstEvent
while not self.pulldom.firstEvent[1]:
buf = self.stream.read(self.bufsize)
if not buf:
self.parser.close()
return None
self.parser.feed(buf)
rc = self.pulldom.firstEvent[1][0]
self.pulldom.firstEvent[1] = self.pulldom.firstEvent[1][1]
return rc
def _slurp(self):
""" Fallback replacement for getEvent() using the
standard SAX2 interface, which means we slurp the
SAX events into memory (no performance gain, but
we are compatible to all SAX parsers).
"""
self.parser.parse(self.stream)
self.getEvent = self._emit
return self._emit()
def _emit(self):
""" Fallback replacement for getEvent() that emits
the events that _slurp() read previously.
"""
rc = self.pulldom.firstEvent[1][0]
self.pulldom.firstEvent[1] = self.pulldom.firstEvent[1][1]
return rc
def clear(self):
"""clear(): Explicitly release parsing objects"""
self.pulldom.clear()
del self.pulldom
self.parser = None
self.stream = None
class SAX2DOM(PullDOM):
def startElementNS(self, name, tagName , attrs):
PullDOM.startElementNS(self, name, tagName, attrs)
curNode = self.elementStack[-1]
parentNode = self.elementStack[-2]
parentNode.appendChild(curNode)
def startElement(self, name, attrs):
PullDOM.startElement(self, name, attrs)
curNode = self.elementStack[-1]
parentNode = self.elementStack[-2]
parentNode.appendChild(curNode)
def processingInstruction(self, target, data):
PullDOM.processingInstruction(self, target, data)
node = self.lastEvent[0][1]
parentNode = self.elementStack[-1]
parentNode.appendChild(node)
def ignorableWhitespace(self, chars):
PullDOM.ignorableWhitespace(self, chars)
node = self.lastEvent[0][1]
parentNode = self.elementStack[-1]
parentNode.appendChild(node)
def characters(self, chars):
PullDOM.characters(self, chars)
node = self.lastEvent[0][1]
parentNode = self.elementStack[-1]
parentNode.appendChild(node)
default_bufsize = (2 ** 14) - 20
def parse(stream_or_string, parser=None, bufsize=None):
if bufsize is None:
bufsize = default_bufsize
if isinstance(stream_or_string, str):
stream = open(stream_or_string, 'rb')
else:
stream = stream_or_string
if not parser:
parser = xml.sax.make_parser()
return DOMEventStream(stream, parser, bufsize)
def parseString(string, parser=None):
from io import StringIO
bufsize = len(string)
buf = StringIO(string)
if not parser:
parser = xml.sax.make_parser()
return DOMEventStream(buf, parser, bufsize)
| 11,761 | 343 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/dom/domreg.py | """Registration facilities for DOM. This module should not be used
directly. Instead, the functions getDOMImplementation and
registerDOMImplementation should be imported from xml.dom."""
# This is a list of well-known implementations. Well-known names
# should be published by posting to [email protected], and are
# subsequently recorded in this file.
import sys
well_known_implementations = {
'minidom':'xml.dom.minidom',
'4DOM': 'xml.dom.DOMImplementation',
}
# DOM implementations not officially registered should register
# themselves with their
registered = {}
def registerDOMImplementation(name, factory):
"""registerDOMImplementation(name, factory)
Register the factory function with the name. The factory function
should return an object which implements the DOMImplementation
interface. The factory function can either return the same object,
or a new one (e.g. if that implementation supports some
customization)."""
registered[name] = factory
def _good_enough(dom, features):
"_good_enough(dom, features) -> Return 1 if the dom offers the features"
for f,v in features:
if not dom.hasFeature(f,v):
return 0
return 1
def getDOMImplementation(name=None, features=()):
"""getDOMImplementation(name = None, features = ()) -> DOM implementation.
Return a suitable DOM implementation. The name is either
well-known, the module name of a DOM implementation, or None. If
it is not None, imports the corresponding module and returns
DOMImplementation object if the import succeeds.
If name is not given, consider the available implementations to
find one with the required feature set. If no implementation can
be found, raise an ImportError. The features list must be a sequence
of (feature, version) pairs which are passed to hasFeature."""
import os
creator = None
mod = well_known_implementations.get(name)
if mod:
mod = __import__(mod, {}, {}, ['getDOMImplementation'])
return mod.getDOMImplementation()
elif name:
return registered[name]()
elif not sys.flags.ignore_environment and "PYTHON_DOM" in os.environ:
return getDOMImplementation(name = os.environ["PYTHON_DOM"])
# User did not specify a name, try implementations in arbitrary
# order, returning the one that has the required features
if isinstance(features, str):
features = _parse_feature_string(features)
for creator in registered.values():
dom = creator()
if _good_enough(dom, features):
return dom
for creator in well_known_implementations.keys():
try:
dom = getDOMImplementation(name = creator)
except Exception: # typically ImportError, or AttributeError
continue
if _good_enough(dom, features):
return dom
raise ImportError("no suitable DOM implementation found")
def _parse_feature_string(s):
features = []
parts = s.split()
i = 0
length = len(parts)
while i < length:
feature = parts[i]
if feature[0] in "0123456789":
raise ValueError("bad feature name: %r" % (feature,))
i = i + 1
version = None
if i < length:
v = parts[i]
if v[0] in "0123456789":
i = i + 1
version = v
features.append((feature, version))
return tuple(features)
| 3,451 | 100 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/dom/minicompat.py | """Python version compatibility support for minidom.
This module contains internal implementation details and
should not be imported; use xml.dom.minidom instead.
"""
# This module should only be imported using "import *".
#
# The following names are defined:
#
# NodeList -- lightest possible NodeList implementation
#
# EmptyNodeList -- lightest possible NodeList that is guaranteed to
# remain empty (immutable)
#
# StringTypes -- tuple of defined string types
#
# defproperty -- function used in conjunction with GetattrMagic;
# using these together is needed to make them work
# as efficiently as possible in both Python 2.2+
# and older versions. For example:
#
# class MyClass(GetattrMagic):
# def _get_myattr(self):
# return something
#
# defproperty(MyClass, "myattr",
# "return some value")
#
# For Python 2.2 and newer, this will construct a
# property object on the class, which avoids
# needing to override __getattr__(). It will only
# work for read-only attributes.
#
# For older versions of Python, inheriting from
# GetattrMagic will use the traditional
# __getattr__() hackery to achieve the same effect,
# but less efficiently.
#
# defproperty() should be used for each version of
# the relevant _get_<property>() function.
__all__ = ["NodeList", "EmptyNodeList", "StringTypes", "defproperty"]
import xml.dom
StringTypes = (str,)
class NodeList(list):
__slots__ = ()
def item(self, index):
if 0 <= index < len(self):
return self[index]
def _get_length(self):
return len(self)
def _set_length(self, value):
raise xml.dom.NoModificationAllowedErr(
"attempt to modify read-only attribute 'length'")
length = property(_get_length, _set_length,
doc="The number of nodes in the NodeList.")
# For backward compatibility
def __setstate__(self, state):
if state is None:
state = []
self[:] = state
class EmptyNodeList(tuple):
__slots__ = ()
def __add__(self, other):
NL = NodeList()
NL.extend(other)
return NL
def __radd__(self, other):
NL = NodeList()
NL.extend(other)
return NL
def item(self, index):
return None
def _get_length(self):
return 0
def _set_length(self, value):
raise xml.dom.NoModificationAllowedErr(
"attempt to modify read-only attribute 'length'")
length = property(_get_length, _set_length,
doc="The number of nodes in the NodeList.")
def defproperty(klass, name, doc):
get = getattr(klass, ("_get_" + name))
def set(self, value, name=name):
raise xml.dom.NoModificationAllowedErr(
"attempt to modify read-only attribute " + repr(name))
assert not hasattr(klass, "_set_" + name), \
"expected not to find _set_" + name
prop = property(get, set, doc=doc)
setattr(klass, name, prop)
| 3,367 | 110 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/dom/xmlbuilder.py | """Implementation of the DOM Level 3 'LS-Load' feature."""
import copy
import warnings
import xml.dom
from xml.dom.NodeFilter import NodeFilter
__all__ = ["DOMBuilder", "DOMEntityResolver", "DOMInputSource"]
class Options:
"""Features object that has variables set for each DOMBuilder feature.
The DOMBuilder class uses an instance of this class to pass settings to
the ExpatBuilder class.
"""
# Note that the DOMBuilder class in LoadSave constrains which of these
# values can be set using the DOM Level 3 LoadSave feature.
namespaces = 1
namespace_declarations = True
validation = False
external_parameter_entities = True
external_general_entities = True
external_dtd_subset = True
validate_if_schema = False
validate = False
datatype_normalization = False
create_entity_ref_nodes = True
entities = True
whitespace_in_element_content = True
cdata_sections = True
comments = True
charset_overrides_xml_encoding = True
infoset = False
supported_mediatypes_only = False
errorHandler = None
filter = None
class DOMBuilder:
entityResolver = None
errorHandler = None
filter = None
ACTION_REPLACE = 1
ACTION_APPEND_AS_CHILDREN = 2
ACTION_INSERT_AFTER = 3
ACTION_INSERT_BEFORE = 4
_legal_actions = (ACTION_REPLACE, ACTION_APPEND_AS_CHILDREN,
ACTION_INSERT_AFTER, ACTION_INSERT_BEFORE)
def __init__(self):
self._options = Options()
def _get_entityResolver(self):
return self.entityResolver
def _set_entityResolver(self, entityResolver):
self.entityResolver = entityResolver
def _get_errorHandler(self):
return self.errorHandler
def _set_errorHandler(self, errorHandler):
self.errorHandler = errorHandler
def _get_filter(self):
return self.filter
def _set_filter(self, filter):
self.filter = filter
def setFeature(self, name, state):
if self.supportsFeature(name):
state = state and 1 or 0
try:
settings = self._settings[(_name_xform(name), state)]
except KeyError:
raise xml.dom.NotSupportedErr(
"unsupported feature: %r" % (name,))
else:
for name, value in settings:
setattr(self._options, name, value)
else:
raise xml.dom.NotFoundErr("unknown feature: " + repr(name))
def supportsFeature(self, name):
return hasattr(self._options, _name_xform(name))
def canSetFeature(self, name, state):
key = (_name_xform(name), state and 1 or 0)
return key in self._settings
# This dictionary maps from (feature,value) to a list of
# (option,value) pairs that should be set on the Options object.
# If a (feature,value) setting is not in this dictionary, it is
# not supported by the DOMBuilder.
#
_settings = {
("namespace_declarations", 0): [
("namespace_declarations", 0)],
("namespace_declarations", 1): [
("namespace_declarations", 1)],
("validation", 0): [
("validation", 0)],
("external_general_entities", 0): [
("external_general_entities", 0)],
("external_general_entities", 1): [
("external_general_entities", 1)],
("external_parameter_entities", 0): [
("external_parameter_entities", 0)],
("external_parameter_entities", 1): [
("external_parameter_entities", 1)],
("validate_if_schema", 0): [
("validate_if_schema", 0)],
("create_entity_ref_nodes", 0): [
("create_entity_ref_nodes", 0)],
("create_entity_ref_nodes", 1): [
("create_entity_ref_nodes", 1)],
("entities", 0): [
("create_entity_ref_nodes", 0),
("entities", 0)],
("entities", 1): [
("entities", 1)],
("whitespace_in_element_content", 0): [
("whitespace_in_element_content", 0)],
("whitespace_in_element_content", 1): [
("whitespace_in_element_content", 1)],
("cdata_sections", 0): [
("cdata_sections", 0)],
("cdata_sections", 1): [
("cdata_sections", 1)],
("comments", 0): [
("comments", 0)],
("comments", 1): [
("comments", 1)],
("charset_overrides_xml_encoding", 0): [
("charset_overrides_xml_encoding", 0)],
("charset_overrides_xml_encoding", 1): [
("charset_overrides_xml_encoding", 1)],
("infoset", 0): [],
("infoset", 1): [
("namespace_declarations", 0),
("validate_if_schema", 0),
("create_entity_ref_nodes", 0),
("entities", 0),
("cdata_sections", 0),
("datatype_normalization", 1),
("whitespace_in_element_content", 1),
("comments", 1),
("charset_overrides_xml_encoding", 1)],
("supported_mediatypes_only", 0): [
("supported_mediatypes_only", 0)],
("namespaces", 0): [
("namespaces", 0)],
("namespaces", 1): [
("namespaces", 1)],
}
def getFeature(self, name):
xname = _name_xform(name)
try:
return getattr(self._options, xname)
except AttributeError:
if name == "infoset":
options = self._options
return (options.datatype_normalization
and options.whitespace_in_element_content
and options.comments
and options.charset_overrides_xml_encoding
and not (options.namespace_declarations
or options.validate_if_schema
or options.create_entity_ref_nodes
or options.entities
or options.cdata_sections))
raise xml.dom.NotFoundErr("feature %s not known" % repr(name))
def parseURI(self, uri):
if self.entityResolver:
input = self.entityResolver.resolveEntity(None, uri)
else:
input = DOMEntityResolver().resolveEntity(None, uri)
return self.parse(input)
def parse(self, input):
options = copy.copy(self._options)
options.filter = self.filter
options.errorHandler = self.errorHandler
fp = input.byteStream
if fp is None and options.systemId:
import urllib.request
fp = urllib.request.urlopen(input.systemId)
return self._parse_bytestream(fp, options)
def parseWithContext(self, input, cnode, action):
if action not in self._legal_actions:
raise ValueError("not a legal action")
raise NotImplementedError("Haven't written this yet...")
def _parse_bytestream(self, stream, options):
import xml.dom.expatbuilder
builder = xml.dom.expatbuilder.makeBuilder(options)
return builder.parseFile(stream)
def _name_xform(name):
return name.lower().replace('-', '_')
class DOMEntityResolver(object):
__slots__ = '_opener',
def resolveEntity(self, publicId, systemId):
assert systemId is not None
source = DOMInputSource()
source.publicId = publicId
source.systemId = systemId
source.byteStream = self._get_opener().open(systemId)
# determine the encoding if the transport provided it
source.encoding = self._guess_media_encoding(source)
# determine the base URI is we can
import posixpath, urllib.parse
parts = urllib.parse.urlparse(systemId)
scheme, netloc, path, params, query, fragment = parts
# XXX should we check the scheme here as well?
if path and not path.endswith("/"):
path = posixpath.dirname(path) + "/"
parts = scheme, netloc, path, params, query, fragment
source.baseURI = urllib.parse.urlunparse(parts)
return source
def _get_opener(self):
try:
return self._opener
except AttributeError:
self._opener = self._create_opener()
return self._opener
def _create_opener(self):
import urllib.request
return urllib.request.build_opener()
def _guess_media_encoding(self, source):
info = source.byteStream.info()
if "Content-Type" in info:
for param in info.getplist():
if param.startswith("charset="):
return param.split("=", 1)[1].lower()
class DOMInputSource(object):
__slots__ = ('byteStream', 'characterStream', 'stringData',
'encoding', 'publicId', 'systemId', 'baseURI')
def __init__(self):
self.byteStream = None
self.characterStream = None
self.stringData = None
self.encoding = None
self.publicId = None
self.systemId = None
self.baseURI = None
def _get_byteStream(self):
return self.byteStream
def _set_byteStream(self, byteStream):
self.byteStream = byteStream
def _get_characterStream(self):
return self.characterStream
def _set_characterStream(self, characterStream):
self.characterStream = characterStream
def _get_stringData(self):
return self.stringData
def _set_stringData(self, data):
self.stringData = data
def _get_encoding(self):
return self.encoding
def _set_encoding(self, encoding):
self.encoding = encoding
def _get_publicId(self):
return self.publicId
def _set_publicId(self, publicId):
self.publicId = publicId
def _get_systemId(self):
return self.systemId
def _set_systemId(self, systemId):
self.systemId = systemId
def _get_baseURI(self):
return self.baseURI
def _set_baseURI(self, uri):
self.baseURI = uri
class DOMBuilderFilter:
"""Element filter which can be used to tailor construction of
a DOM instance.
"""
# There's really no need for this class; concrete implementations
# should just implement the endElement() and startElement()
# methods as appropriate. Using this makes it easy to only
# implement one of them.
FILTER_ACCEPT = 1
FILTER_REJECT = 2
FILTER_SKIP = 3
FILTER_INTERRUPT = 4
whatToShow = NodeFilter.SHOW_ALL
def _get_whatToShow(self):
return self.whatToShow
def acceptNode(self, element):
return self.FILTER_ACCEPT
def startContainer(self, element):
return self.FILTER_ACCEPT
del NodeFilter
class _AsyncDeprecatedProperty:
def warn(self, cls):
clsname = cls.__name__
warnings.warn(
"{cls}.async is deprecated; use {cls}.async_".format(cls=clsname),
DeprecationWarning)
def __get__(self, instance, cls):
self.warn(cls)
if instance is not None:
return instance.async_
return False
def __set__(self, instance, value):
self.warn(type(instance))
setattr(instance, 'async_', value)
class DocumentLS:
"""Mixin to create documents that conform to the load/save spec."""
async_ = False
locals()['async'] = _AsyncDeprecatedProperty() # Avoid DeprecationWarning
def _get_async(self):
return False
def _set_async(self, flag):
if flag:
raise xml.dom.NotSupportedErr(
"asynchronous document loading is not supported")
def abort(self):
# What does it mean to "clear" a document? Does the
# documentElement disappear?
raise NotImplementedError(
"haven't figured out what this means yet")
def load(self, uri):
raise NotImplementedError("haven't written this yet")
def loadXML(self, source):
raise NotImplementedError("haven't written this yet")
def saveXML(self, snode):
if snode is None:
snode = self
elif snode.ownerDocument is not self:
raise xml.dom.WrongDocumentErr()
return snode.toxml()
del _AsyncDeprecatedProperty
class DOMImplementationLS:
MODE_SYNCHRONOUS = 1
MODE_ASYNCHRONOUS = 2
def createDOMBuilder(self, mode, schemaType):
if schemaType is not None:
raise xml.dom.NotSupportedErr(
"schemaType not yet supported")
if mode == self.MODE_SYNCHRONOUS:
return DOMBuilder()
if mode == self.MODE_ASYNCHRONOUS:
raise xml.dom.NotSupportedErr(
"asynchronous builders are not supported")
raise ValueError("unknown value for mode")
def createDOMWriter(self):
raise NotImplementedError(
"the writer interface hasn't been written yet!")
def createDOMInputSource(self):
return DOMInputSource()
| 12,996 | 411 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/dom/__init__.py | """W3C Document Object Model implementation for Python.
The Python mapping of the Document Object Model is documented in the
Python Library Reference in the section on the xml.dom package.
This package contains the following modules:
minidom -- A simple implementation of the Level 1 DOM with namespace
support added (based on the Level 2 specification) and other
minor Level 2 functionality.
pulldom -- DOM builder supporting on-demand tree-building for selected
subtrees of the document.
"""
class Node:
"""Class giving the NodeType constants."""
__slots__ = ()
# DOM implementations may use this as a base class for their own
# Node implementations. If they don't, the constants defined here
# should still be used as the canonical definitions as they match
# the values given in the W3C recommendation. Client code can
# safely refer to these values in all tests of Node.nodeType
# values.
ELEMENT_NODE = 1
ATTRIBUTE_NODE = 2
TEXT_NODE = 3
CDATA_SECTION_NODE = 4
ENTITY_REFERENCE_NODE = 5
ENTITY_NODE = 6
PROCESSING_INSTRUCTION_NODE = 7
COMMENT_NODE = 8
DOCUMENT_NODE = 9
DOCUMENT_TYPE_NODE = 10
DOCUMENT_FRAGMENT_NODE = 11
NOTATION_NODE = 12
#ExceptionCode
INDEX_SIZE_ERR = 1
DOMSTRING_SIZE_ERR = 2
HIERARCHY_REQUEST_ERR = 3
WRONG_DOCUMENT_ERR = 4
INVALID_CHARACTER_ERR = 5
NO_DATA_ALLOWED_ERR = 6
NO_MODIFICATION_ALLOWED_ERR = 7
NOT_FOUND_ERR = 8
NOT_SUPPORTED_ERR = 9
INUSE_ATTRIBUTE_ERR = 10
INVALID_STATE_ERR = 11
SYNTAX_ERR = 12
INVALID_MODIFICATION_ERR = 13
NAMESPACE_ERR = 14
INVALID_ACCESS_ERR = 15
VALIDATION_ERR = 16
class DOMException(Exception):
"""Abstract base class for DOM exceptions.
Exceptions with specific codes are specializations of this class."""
def __init__(self, *args, **kw):
if self.__class__ is DOMException:
raise RuntimeError(
"DOMException should not be instantiated directly")
Exception.__init__(self, *args, **kw)
def _get_code(self):
return self.code
class IndexSizeErr(DOMException):
code = INDEX_SIZE_ERR
class DomstringSizeErr(DOMException):
code = DOMSTRING_SIZE_ERR
class HierarchyRequestErr(DOMException):
code = HIERARCHY_REQUEST_ERR
class WrongDocumentErr(DOMException):
code = WRONG_DOCUMENT_ERR
class InvalidCharacterErr(DOMException):
code = INVALID_CHARACTER_ERR
class NoDataAllowedErr(DOMException):
code = NO_DATA_ALLOWED_ERR
class NoModificationAllowedErr(DOMException):
code = NO_MODIFICATION_ALLOWED_ERR
class NotFoundErr(DOMException):
code = NOT_FOUND_ERR
class NotSupportedErr(DOMException):
code = NOT_SUPPORTED_ERR
class InuseAttributeErr(DOMException):
code = INUSE_ATTRIBUTE_ERR
class InvalidStateErr(DOMException):
code = INVALID_STATE_ERR
class SyntaxErr(DOMException):
code = SYNTAX_ERR
class InvalidModificationErr(DOMException):
code = INVALID_MODIFICATION_ERR
class NamespaceErr(DOMException):
code = NAMESPACE_ERR
class InvalidAccessErr(DOMException):
code = INVALID_ACCESS_ERR
class ValidationErr(DOMException):
code = VALIDATION_ERR
class UserDataHandler:
"""Class giving the operation constants for UserDataHandler.handle()."""
# Based on DOM Level 3 (WD 9 April 2002)
NODE_CLONED = 1
NODE_IMPORTED = 2
NODE_DELETED = 3
NODE_RENAMED = 4
XML_NAMESPACE = "http://www.w3.org/XML/1998/namespace"
XMLNS_NAMESPACE = "http://www.w3.org/2000/xmlns/"
XHTML_NAMESPACE = "http://www.w3.org/1999/xhtml"
EMPTY_NAMESPACE = None
EMPTY_PREFIX = None
from .domreg import getDOMImplementation, registerDOMImplementation
| 4,019 | 141 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/xml/dom/minidom.py | """Simple implementation of the Level 1 DOM.
Namespaces and other minor Level 2 features are also supported.
parse("foo.xml")
parseString("<foo><bar/></foo>")
Todo:
=====
* convenience methods for getting elements and text.
* more testing
* bring some of the writer and linearizer code into conformance with this
interface
* SAX 2 namespaces
"""
import io
import xml.dom
from xml.dom import EMPTY_NAMESPACE, EMPTY_PREFIX, XMLNS_NAMESPACE, domreg
from xml.dom.minicompat import *
from xml.dom.xmlbuilder import DOMImplementationLS, DocumentLS
# This is used by the ID-cache invalidation checks; the list isn't
# actually complete, since the nodes being checked will never be the
# DOCUMENT_NODE or DOCUMENT_FRAGMENT_NODE. (The node being checked is
# the node being added or removed, not the node being modified.)
#
_nodeTypes_with_children = (xml.dom.Node.ELEMENT_NODE,
xml.dom.Node.ENTITY_REFERENCE_NODE)
class Node(xml.dom.Node):
namespaceURI = None # this is non-null only for elements and attributes
parentNode = None
ownerDocument = None
nextSibling = None
previousSibling = None
prefix = EMPTY_PREFIX # non-null only for NS elements and attributes
def __bool__(self):
return True
def toxml(self, encoding=None):
return self.toprettyxml("", "", encoding)
def toprettyxml(self, indent="\t", newl="\n", encoding=None):
if encoding is None:
writer = io.StringIO()
else:
writer = io.TextIOWrapper(io.BytesIO(),
encoding=encoding,
errors="xmlcharrefreplace",
newline='\n')
if self.nodeType == Node.DOCUMENT_NODE:
# Can pass encoding only to document, to put it into XML header
self.writexml(writer, "", indent, newl, encoding)
else:
self.writexml(writer, "", indent, newl)
if encoding is None:
return writer.getvalue()
else:
return writer.detach().getvalue()
def hasChildNodes(self):
return bool(self.childNodes)
def _get_childNodes(self):
return self.childNodes
def _get_firstChild(self):
if self.childNodes:
return self.childNodes[0]
def _get_lastChild(self):
if self.childNodes:
return self.childNodes[-1]
def insertBefore(self, newChild, refChild):
if newChild.nodeType == self.DOCUMENT_FRAGMENT_NODE:
for c in tuple(newChild.childNodes):
self.insertBefore(c, refChild)
### The DOM does not clearly specify what to return in this case
return newChild
if newChild.nodeType not in self._child_node_types:
raise xml.dom.HierarchyRequestErr(
"%s cannot be child of %s" % (repr(newChild), repr(self)))
if newChild.parentNode is not None:
newChild.parentNode.removeChild(newChild)
if refChild is None:
self.appendChild(newChild)
else:
try:
index = self.childNodes.index(refChild)
except ValueError:
raise xml.dom.NotFoundErr()
if newChild.nodeType in _nodeTypes_with_children:
_clear_id_cache(self)
self.childNodes.insert(index, newChild)
newChild.nextSibling = refChild
refChild.previousSibling = newChild
if index:
node = self.childNodes[index-1]
node.nextSibling = newChild
newChild.previousSibling = node
else:
newChild.previousSibling = None
newChild.parentNode = self
return newChild
def appendChild(self, node):
if node.nodeType == self.DOCUMENT_FRAGMENT_NODE:
for c in tuple(node.childNodes):
self.appendChild(c)
### The DOM does not clearly specify what to return in this case
return node
if node.nodeType not in self._child_node_types:
raise xml.dom.HierarchyRequestErr(
"%s cannot be child of %s" % (repr(node), repr(self)))
elif node.nodeType in _nodeTypes_with_children:
_clear_id_cache(self)
if node.parentNode is not None:
node.parentNode.removeChild(node)
_append_child(self, node)
node.nextSibling = None
return node
def replaceChild(self, newChild, oldChild):
if newChild.nodeType == self.DOCUMENT_FRAGMENT_NODE:
refChild = oldChild.nextSibling
self.removeChild(oldChild)
return self.insertBefore(newChild, refChild)
if newChild.nodeType not in self._child_node_types:
raise xml.dom.HierarchyRequestErr(
"%s cannot be child of %s" % (repr(newChild), repr(self)))
if newChild is oldChild:
return
if newChild.parentNode is not None:
newChild.parentNode.removeChild(newChild)
try:
index = self.childNodes.index(oldChild)
except ValueError:
raise xml.dom.NotFoundErr()
self.childNodes[index] = newChild
newChild.parentNode = self
oldChild.parentNode = None
if (newChild.nodeType in _nodeTypes_with_children
or oldChild.nodeType in _nodeTypes_with_children):
_clear_id_cache(self)
newChild.nextSibling = oldChild.nextSibling
newChild.previousSibling = oldChild.previousSibling
oldChild.nextSibling = None
oldChild.previousSibling = None
if newChild.previousSibling:
newChild.previousSibling.nextSibling = newChild
if newChild.nextSibling:
newChild.nextSibling.previousSibling = newChild
return oldChild
def removeChild(self, oldChild):
try:
self.childNodes.remove(oldChild)
except ValueError:
raise xml.dom.NotFoundErr()
if oldChild.nextSibling is not None:
oldChild.nextSibling.previousSibling = oldChild.previousSibling
if oldChild.previousSibling is not None:
oldChild.previousSibling.nextSibling = oldChild.nextSibling
oldChild.nextSibling = oldChild.previousSibling = None
if oldChild.nodeType in _nodeTypes_with_children:
_clear_id_cache(self)
oldChild.parentNode = None
return oldChild
def normalize(self):
L = []
for child in self.childNodes:
if child.nodeType == Node.TEXT_NODE:
if not child.data:
# empty text node; discard
if L:
L[-1].nextSibling = child.nextSibling
if child.nextSibling:
child.nextSibling.previousSibling = child.previousSibling
child.unlink()
elif L and L[-1].nodeType == child.nodeType:
# collapse text node
node = L[-1]
node.data = node.data + child.data
node.nextSibling = child.nextSibling
if child.nextSibling:
child.nextSibling.previousSibling = node
child.unlink()
else:
L.append(child)
else:
L.append(child)
if child.nodeType == Node.ELEMENT_NODE:
child.normalize()
self.childNodes[:] = L
def cloneNode(self, deep):
return _clone_node(self, deep, self.ownerDocument or self)
def isSupported(self, feature, version):
return self.ownerDocument.implementation.hasFeature(feature, version)
def _get_localName(self):
# Overridden in Element and Attr where localName can be Non-Null
return None
# Node interfaces from Level 3 (WD 9 April 2002)
def isSameNode(self, other):
return self is other
def getInterface(self, feature):
if self.isSupported(feature, None):
return self
else:
return None
# The "user data" functions use a dictionary that is only present
# if some user data has been set, so be careful not to assume it
# exists.
def getUserData(self, key):
try:
return self._user_data[key][0]
except (AttributeError, KeyError):
return None
def setUserData(self, key, data, handler):
old = None
try:
d = self._user_data
except AttributeError:
d = {}
self._user_data = d
if key in d:
old = d[key][0]
if data is None:
# ignore handlers passed for None
handler = None
if old is not None:
del d[key]
else:
d[key] = (data, handler)
return old
def _call_user_data_handler(self, operation, src, dst):
if hasattr(self, "_user_data"):
for key, (data, handler) in list(self._user_data.items()):
if handler is not None:
handler.handle(operation, key, data, src, dst)
# minidom-specific API:
def unlink(self):
self.parentNode = self.ownerDocument = None
if self.childNodes:
for child in self.childNodes:
child.unlink()
self.childNodes = NodeList()
self.previousSibling = None
self.nextSibling = None
# A Node is its own context manager, to ensure that an unlink() call occurs.
# This is similar to how a file object works.
def __enter__(self):
return self
def __exit__(self, et, ev, tb):
self.unlink()
defproperty(Node, "firstChild", doc="First child node, or None.")
defproperty(Node, "lastChild", doc="Last child node, or None.")
defproperty(Node, "localName", doc="Namespace-local name of this node.")
def _append_child(self, node):
# fast path with less checks; usable by DOM builders if careful
childNodes = self.childNodes
if childNodes:
last = childNodes[-1]
node.previousSibling = last
last.nextSibling = node
childNodes.append(node)
node.parentNode = self
def _in_document(node):
# return True iff node is part of a document tree
while node is not None:
if node.nodeType == Node.DOCUMENT_NODE:
return True
node = node.parentNode
return False
def _write_data(writer, data):
"Writes datachars to writer."
if data:
data = data.replace("&", "&").replace("<", "<"). \
replace("\"", """).replace(">", ">")
writer.write(data)
def _get_elements_by_tagName_helper(parent, name, rc):
for node in parent.childNodes:
if node.nodeType == Node.ELEMENT_NODE and \
(name == "*" or node.tagName == name):
rc.append(node)
_get_elements_by_tagName_helper(node, name, rc)
return rc
def _get_elements_by_tagName_ns_helper(parent, nsURI, localName, rc):
for node in parent.childNodes:
if node.nodeType == Node.ELEMENT_NODE:
if ((localName == "*" or node.localName == localName) and
(nsURI == "*" or node.namespaceURI == nsURI)):
rc.append(node)
_get_elements_by_tagName_ns_helper(node, nsURI, localName, rc)
return rc
class DocumentFragment(Node):
nodeType = Node.DOCUMENT_FRAGMENT_NODE
nodeName = "#document-fragment"
nodeValue = None
attributes = None
parentNode = None
_child_node_types = (Node.ELEMENT_NODE,
Node.TEXT_NODE,
Node.CDATA_SECTION_NODE,
Node.ENTITY_REFERENCE_NODE,
Node.PROCESSING_INSTRUCTION_NODE,
Node.COMMENT_NODE,
Node.NOTATION_NODE)
def __init__(self):
self.childNodes = NodeList()
class Attr(Node):
__slots__=('_name', '_value', 'namespaceURI',
'_prefix', 'childNodes', '_localName', 'ownerDocument', 'ownerElement')
nodeType = Node.ATTRIBUTE_NODE
attributes = None
specified = False
_is_id = False
_child_node_types = (Node.TEXT_NODE, Node.ENTITY_REFERENCE_NODE)
def __init__(self, qName, namespaceURI=EMPTY_NAMESPACE, localName=None,
prefix=None):
self.ownerElement = None
self._name = qName
self.namespaceURI = namespaceURI
self._prefix = prefix
self.childNodes = NodeList()
# Add the single child node that represents the value of the attr
self.childNodes.append(Text())
# nodeValue and value are set elsewhere
def _get_localName(self):
try:
return self._localName
except AttributeError:
return self.nodeName.split(":", 1)[-1]
def _get_specified(self):
return self.specified
def _get_name(self):
return self._name
def _set_name(self, value):
self._name = value
if self.ownerElement is not None:
_clear_id_cache(self.ownerElement)
nodeName = name = property(_get_name, _set_name)
def _get_value(self):
return self._value
def _set_value(self, value):
self._value = value
self.childNodes[0].data = value
if self.ownerElement is not None:
_clear_id_cache(self.ownerElement)
self.childNodes[0].data = value
nodeValue = value = property(_get_value, _set_value)
def _get_prefix(self):
return self._prefix
def _set_prefix(self, prefix):
nsuri = self.namespaceURI
if prefix == "xmlns":
if nsuri and nsuri != XMLNS_NAMESPACE:
raise xml.dom.NamespaceErr(
"illegal use of 'xmlns' prefix for the wrong namespace")
self._prefix = prefix
if prefix is None:
newName = self.localName
else:
newName = "%s:%s" % (prefix, self.localName)
if self.ownerElement:
_clear_id_cache(self.ownerElement)
self.name = newName
prefix = property(_get_prefix, _set_prefix)
def unlink(self):
# This implementation does not call the base implementation
# since most of that is not needed, and the expense of the
# method call is not warranted. We duplicate the removal of
# children, but that's all we needed from the base class.
elem = self.ownerElement
if elem is not None:
del elem._attrs[self.nodeName]
del elem._attrsNS[(self.namespaceURI, self.localName)]
if self._is_id:
self._is_id = False
elem._magic_id_nodes -= 1
self.ownerDocument._magic_id_count -= 1
for child in self.childNodes:
child.unlink()
del self.childNodes[:]
def _get_isId(self):
if self._is_id:
return True
doc = self.ownerDocument
elem = self.ownerElement
if doc is None or elem is None:
return False
info = doc._get_elem_info(elem)
if info is None:
return False
if self.namespaceURI:
return info.isIdNS(self.namespaceURI, self.localName)
else:
return info.isId(self.nodeName)
def _get_schemaType(self):
doc = self.ownerDocument
elem = self.ownerElement
if doc is None or elem is None:
return _no_type
info = doc._get_elem_info(elem)
if info is None:
return _no_type
if self.namespaceURI:
return info.getAttributeTypeNS(self.namespaceURI, self.localName)
else:
return info.getAttributeType(self.nodeName)
defproperty(Attr, "isId", doc="True if this attribute is an ID.")
defproperty(Attr, "localName", doc="Namespace-local name of this attribute.")
defproperty(Attr, "schemaType", doc="Schema type for this attribute.")
class NamedNodeMap(object):
"""The attribute list is a transient interface to the underlying
dictionaries. Mutations here will change the underlying element's
dictionary.
Ordering is imposed artificially and does not reflect the order of
attributes as found in an input document.
"""
__slots__ = ('_attrs', '_attrsNS', '_ownerElement')
def __init__(self, attrs, attrsNS, ownerElement):
self._attrs = attrs
self._attrsNS = attrsNS
self._ownerElement = ownerElement
def _get_length(self):
return len(self._attrs)
def item(self, index):
try:
return self[list(self._attrs.keys())[index]]
except IndexError:
return None
def items(self):
L = []
for node in self._attrs.values():
L.append((node.nodeName, node.value))
return L
def itemsNS(self):
L = []
for node in self._attrs.values():
L.append(((node.namespaceURI, node.localName), node.value))
return L
def __contains__(self, key):
if isinstance(key, str):
return key in self._attrs
else:
return key in self._attrsNS
def keys(self):
return self._attrs.keys()
def keysNS(self):
return self._attrsNS.keys()
def values(self):
return self._attrs.values()
def get(self, name, value=None):
return self._attrs.get(name, value)
__len__ = _get_length
def _cmp(self, other):
if self._attrs is getattr(other, "_attrs", None):
return 0
else:
return (id(self) > id(other)) - (id(self) < id(other))
def __eq__(self, other):
return self._cmp(other) == 0
def __ge__(self, other):
return self._cmp(other) >= 0
def __gt__(self, other):
return self._cmp(other) > 0
def __le__(self, other):
return self._cmp(other) <= 0
def __lt__(self, other):
return self._cmp(other) < 0
def __getitem__(self, attname_or_tuple):
if isinstance(attname_or_tuple, tuple):
return self._attrsNS[attname_or_tuple]
else:
return self._attrs[attname_or_tuple]
# same as set
def __setitem__(self, attname, value):
if isinstance(value, str):
try:
node = self._attrs[attname]
except KeyError:
node = Attr(attname)
node.ownerDocument = self._ownerElement.ownerDocument
self.setNamedItem(node)
node.value = value
else:
if not isinstance(value, Attr):
raise TypeError("value must be a string or Attr object")
node = value
self.setNamedItem(node)
def getNamedItem(self, name):
try:
return self._attrs[name]
except KeyError:
return None
def getNamedItemNS(self, namespaceURI, localName):
try:
return self._attrsNS[(namespaceURI, localName)]
except KeyError:
return None
def removeNamedItem(self, name):
n = self.getNamedItem(name)
if n is not None:
_clear_id_cache(self._ownerElement)
del self._attrs[n.nodeName]
del self._attrsNS[(n.namespaceURI, n.localName)]
if hasattr(n, 'ownerElement'):
n.ownerElement = None
return n
else:
raise xml.dom.NotFoundErr()
def removeNamedItemNS(self, namespaceURI, localName):
n = self.getNamedItemNS(namespaceURI, localName)
if n is not None:
_clear_id_cache(self._ownerElement)
del self._attrsNS[(n.namespaceURI, n.localName)]
del self._attrs[n.nodeName]
if hasattr(n, 'ownerElement'):
n.ownerElement = None
return n
else:
raise xml.dom.NotFoundErr()
def setNamedItem(self, node):
if not isinstance(node, Attr):
raise xml.dom.HierarchyRequestErr(
"%s cannot be child of %s" % (repr(node), repr(self)))
old = self._attrs.get(node.name)
if old:
old.unlink()
self._attrs[node.name] = node
self._attrsNS[(node.namespaceURI, node.localName)] = node
node.ownerElement = self._ownerElement
_clear_id_cache(node.ownerElement)
return old
def setNamedItemNS(self, node):
return self.setNamedItem(node)
def __delitem__(self, attname_or_tuple):
node = self[attname_or_tuple]
_clear_id_cache(node.ownerElement)
node.unlink()
def __getstate__(self):
return self._attrs, self._attrsNS, self._ownerElement
def __setstate__(self, state):
self._attrs, self._attrsNS, self._ownerElement = state
defproperty(NamedNodeMap, "length",
doc="Number of nodes in the NamedNodeMap.")
AttributeList = NamedNodeMap
class TypeInfo(object):
__slots__ = 'namespace', 'name'
def __init__(self, namespace, name):
self.namespace = namespace
self.name = name
def __repr__(self):
if self.namespace:
return "<%s %r (from %r)>" % (self.__class__.__name__, self.name,
self.namespace)
else:
return "<%s %r>" % (self.__class__.__name__, self.name)
def _get_name(self):
return self.name
def _get_namespace(self):
return self.namespace
_no_type = TypeInfo(None, None)
class Element(Node):
__slots__=('ownerDocument', 'parentNode', 'tagName', 'nodeName', 'prefix',
'namespaceURI', '_localName', 'childNodes', '_attrs', '_attrsNS',
'nextSibling', 'previousSibling')
nodeType = Node.ELEMENT_NODE
nodeValue = None
schemaType = _no_type
_magic_id_nodes = 0
_child_node_types = (Node.ELEMENT_NODE,
Node.PROCESSING_INSTRUCTION_NODE,
Node.COMMENT_NODE,
Node.TEXT_NODE,
Node.CDATA_SECTION_NODE,
Node.ENTITY_REFERENCE_NODE)
def __init__(self, tagName, namespaceURI=EMPTY_NAMESPACE, prefix=None,
localName=None):
self.parentNode = None
self.tagName = self.nodeName = tagName
self.prefix = prefix
self.namespaceURI = namespaceURI
self.childNodes = NodeList()
self.nextSibling = self.previousSibling = None
# Attribute dictionaries are lazily created
# attributes are double-indexed:
# tagName -> Attribute
# URI,localName -> Attribute
# in the future: consider lazy generation
# of attribute objects this is too tricky
# for now because of headaches with
# namespaces.
self._attrs = None
self._attrsNS = None
def _ensure_attributes(self):
if self._attrs is None:
self._attrs = {}
self._attrsNS = {}
def _get_localName(self):
try:
return self._localName
except AttributeError:
return self.tagName.split(":", 1)[-1]
def _get_tagName(self):
return self.tagName
def unlink(self):
if self._attrs is not None:
for attr in list(self._attrs.values()):
attr.unlink()
self._attrs = None
self._attrsNS = None
Node.unlink(self)
def getAttribute(self, attname):
if self._attrs is None:
return ""
try:
return self._attrs[attname].value
except KeyError:
return ""
def getAttributeNS(self, namespaceURI, localName):
if self._attrsNS is None:
return ""
try:
return self._attrsNS[(namespaceURI, localName)].value
except KeyError:
return ""
def setAttribute(self, attname, value):
attr = self.getAttributeNode(attname)
if attr is None:
attr = Attr(attname)
attr.value = value # also sets nodeValue
attr.ownerDocument = self.ownerDocument
self.setAttributeNode(attr)
elif value != attr.value:
attr.value = value
if attr.isId:
_clear_id_cache(self)
def setAttributeNS(self, namespaceURI, qualifiedName, value):
prefix, localname = _nssplit(qualifiedName)
attr = self.getAttributeNodeNS(namespaceURI, localname)
if attr is None:
attr = Attr(qualifiedName, namespaceURI, localname, prefix)
attr.value = value
attr.ownerDocument = self.ownerDocument
self.setAttributeNode(attr)
else:
if value != attr.value:
attr.value = value
if attr.isId:
_clear_id_cache(self)
if attr.prefix != prefix:
attr.prefix = prefix
attr.nodeName = qualifiedName
def getAttributeNode(self, attrname):
if self._attrs is None:
return None
return self._attrs.get(attrname)
def getAttributeNodeNS(self, namespaceURI, localName):
if self._attrsNS is None:
return None
return self._attrsNS.get((namespaceURI, localName))
def setAttributeNode(self, attr):
if attr.ownerElement not in (None, self):
raise xml.dom.InuseAttributeErr("attribute node already owned")
self._ensure_attributes()
old1 = self._attrs.get(attr.name, None)
if old1 is not None:
self.removeAttributeNode(old1)
old2 = self._attrsNS.get((attr.namespaceURI, attr.localName), None)
if old2 is not None and old2 is not old1:
self.removeAttributeNode(old2)
_set_attribute_node(self, attr)
if old1 is not attr:
# It might have already been part of this node, in which case
# it doesn't represent a change, and should not be returned.
return old1
if old2 is not attr:
return old2
setAttributeNodeNS = setAttributeNode
def removeAttribute(self, name):
if self._attrsNS is None:
raise xml.dom.NotFoundErr()
try:
attr = self._attrs[name]
except KeyError:
raise xml.dom.NotFoundErr()
self.removeAttributeNode(attr)
def removeAttributeNS(self, namespaceURI, localName):
if self._attrsNS is None:
raise xml.dom.NotFoundErr()
try:
attr = self._attrsNS[(namespaceURI, localName)]
except KeyError:
raise xml.dom.NotFoundErr()
self.removeAttributeNode(attr)
def removeAttributeNode(self, node):
if node is None:
raise xml.dom.NotFoundErr()
try:
self._attrs[node.name]
except KeyError:
raise xml.dom.NotFoundErr()
_clear_id_cache(self)
node.unlink()
# Restore this since the node is still useful and otherwise
# unlinked
node.ownerDocument = self.ownerDocument
removeAttributeNodeNS = removeAttributeNode
def hasAttribute(self, name):
if self._attrs is None:
return False
return name in self._attrs
def hasAttributeNS(self, namespaceURI, localName):
if self._attrsNS is None:
return False
return (namespaceURI, localName) in self._attrsNS
def getElementsByTagName(self, name):
return _get_elements_by_tagName_helper(self, name, NodeList())
def getElementsByTagNameNS(self, namespaceURI, localName):
return _get_elements_by_tagName_ns_helper(
self, namespaceURI, localName, NodeList())
def __repr__(self):
return "<DOM Element: %s at %#x>" % (self.tagName, id(self))
def writexml(self, writer, indent="", addindent="", newl=""):
# indent = current indentation
# addindent = indentation to add to higher levels
# newl = newline string
writer.write(indent+"<" + self.tagName)
attrs = self._get_attributes()
a_names = sorted(attrs.keys())
for a_name in a_names:
writer.write(" %s=\"" % a_name)
_write_data(writer, attrs[a_name].value)
writer.write("\"")
if self.childNodes:
writer.write(">")
if (len(self.childNodes) == 1 and
self.childNodes[0].nodeType == Node.TEXT_NODE):
self.childNodes[0].writexml(writer, '', '', '')
else:
writer.write(newl)
for node in self.childNodes:
node.writexml(writer, indent+addindent, addindent, newl)
writer.write(indent)
writer.write("</%s>%s" % (self.tagName, newl))
else:
writer.write("/>%s"%(newl))
def _get_attributes(self):
self._ensure_attributes()
return NamedNodeMap(self._attrs, self._attrsNS, self)
def hasAttributes(self):
if self._attrs:
return True
else:
return False
# DOM Level 3 attributes, based on the 22 Oct 2002 draft
def setIdAttribute(self, name):
idAttr = self.getAttributeNode(name)
self.setIdAttributeNode(idAttr)
def setIdAttributeNS(self, namespaceURI, localName):
idAttr = self.getAttributeNodeNS(namespaceURI, localName)
self.setIdAttributeNode(idAttr)
def setIdAttributeNode(self, idAttr):
if idAttr is None or not self.isSameNode(idAttr.ownerElement):
raise xml.dom.NotFoundErr()
if _get_containing_entref(self) is not None:
raise xml.dom.NoModificationAllowedErr()
if not idAttr._is_id:
idAttr._is_id = True
self._magic_id_nodes += 1
self.ownerDocument._magic_id_count += 1
_clear_id_cache(self)
defproperty(Element, "attributes",
doc="NamedNodeMap of attributes on the element.")
defproperty(Element, "localName",
doc="Namespace-local name of this element.")
def _set_attribute_node(element, attr):
_clear_id_cache(element)
element._ensure_attributes()
element._attrs[attr.name] = attr
element._attrsNS[(attr.namespaceURI, attr.localName)] = attr
# This creates a circular reference, but Element.unlink()
# breaks the cycle since the references to the attribute
# dictionaries are tossed.
attr.ownerElement = element
class Childless:
"""Mixin that makes childless-ness easy to implement and avoids
the complexity of the Node methods that deal with children.
"""
__slots__ = ()
attributes = None
childNodes = EmptyNodeList()
firstChild = None
lastChild = None
def _get_firstChild(self):
return None
def _get_lastChild(self):
return None
def appendChild(self, node):
raise xml.dom.HierarchyRequestErr(
self.nodeName + " nodes cannot have children")
def hasChildNodes(self):
return False
def insertBefore(self, newChild, refChild):
raise xml.dom.HierarchyRequestErr(
self.nodeName + " nodes do not have children")
def removeChild(self, oldChild):
raise xml.dom.NotFoundErr(
self.nodeName + " nodes do not have children")
def normalize(self):
# For childless nodes, normalize() has nothing to do.
pass
def replaceChild(self, newChild, oldChild):
raise xml.dom.HierarchyRequestErr(
self.nodeName + " nodes do not have children")
class ProcessingInstruction(Childless, Node):
nodeType = Node.PROCESSING_INSTRUCTION_NODE
__slots__ = ('target', 'data')
def __init__(self, target, data):
self.target = target
self.data = data
# nodeValue is an alias for data
def _get_nodeValue(self):
return self.data
def _set_nodeValue(self, value):
self.data = value
nodeValue = property(_get_nodeValue, _set_nodeValue)
# nodeName is an alias for target
def _get_nodeName(self):
return self.target
def _set_nodeName(self, value):
self.target = value
nodeName = property(_get_nodeName, _set_nodeName)
def writexml(self, writer, indent="", addindent="", newl=""):
writer.write("%s<?%s %s?>%s" % (indent,self.target, self.data, newl))
class CharacterData(Childless, Node):
__slots__=('_data', 'ownerDocument','parentNode', 'previousSibling', 'nextSibling')
def __init__(self):
self.ownerDocument = self.parentNode = None
self.previousSibling = self.nextSibling = None
self._data = ''
Node.__init__(self)
def _get_length(self):
return len(self.data)
__len__ = _get_length
def _get_data(self):
return self._data
def _set_data(self, data):
self._data = data
data = nodeValue = property(_get_data, _set_data)
def __repr__(self):
data = self.data
if len(data) > 10:
dotdotdot = "..."
else:
dotdotdot = ""
return '<DOM %s node "%r%s">' % (
self.__class__.__name__, data[0:10], dotdotdot)
def substringData(self, offset, count):
if offset < 0:
raise xml.dom.IndexSizeErr("offset cannot be negative")
if offset >= len(self.data):
raise xml.dom.IndexSizeErr("offset cannot be beyond end of data")
if count < 0:
raise xml.dom.IndexSizeErr("count cannot be negative")
return self.data[offset:offset+count]
def appendData(self, arg):
self.data = self.data + arg
def insertData(self, offset, arg):
if offset < 0:
raise xml.dom.IndexSizeErr("offset cannot be negative")
if offset >= len(self.data):
raise xml.dom.IndexSizeErr("offset cannot be beyond end of data")
if arg:
self.data = "%s%s%s" % (
self.data[:offset], arg, self.data[offset:])
def deleteData(self, offset, count):
if offset < 0:
raise xml.dom.IndexSizeErr("offset cannot be negative")
if offset >= len(self.data):
raise xml.dom.IndexSizeErr("offset cannot be beyond end of data")
if count < 0:
raise xml.dom.IndexSizeErr("count cannot be negative")
if count:
self.data = self.data[:offset] + self.data[offset+count:]
def replaceData(self, offset, count, arg):
if offset < 0:
raise xml.dom.IndexSizeErr("offset cannot be negative")
if offset >= len(self.data):
raise xml.dom.IndexSizeErr("offset cannot be beyond end of data")
if count < 0:
raise xml.dom.IndexSizeErr("count cannot be negative")
if count:
self.data = "%s%s%s" % (
self.data[:offset], arg, self.data[offset+count:])
defproperty(CharacterData, "length", doc="Length of the string data.")
class Text(CharacterData):
__slots__ = ()
nodeType = Node.TEXT_NODE
nodeName = "#text"
attributes = None
def splitText(self, offset):
if offset < 0 or offset > len(self.data):
raise xml.dom.IndexSizeErr("illegal offset value")
newText = self.__class__()
newText.data = self.data[offset:]
newText.ownerDocument = self.ownerDocument
next = self.nextSibling
if self.parentNode and self in self.parentNode.childNodes:
if next is None:
self.parentNode.appendChild(newText)
else:
self.parentNode.insertBefore(newText, next)
self.data = self.data[:offset]
return newText
def writexml(self, writer, indent="", addindent="", newl=""):
_write_data(writer, "%s%s%s" % (indent, self.data, newl))
# DOM Level 3 (WD 9 April 2002)
def _get_wholeText(self):
L = [self.data]
n = self.previousSibling
while n is not None:
if n.nodeType in (Node.TEXT_NODE, Node.CDATA_SECTION_NODE):
L.insert(0, n.data)
n = n.previousSibling
else:
break
n = self.nextSibling
while n is not None:
if n.nodeType in (Node.TEXT_NODE, Node.CDATA_SECTION_NODE):
L.append(n.data)
n = n.nextSibling
else:
break
return ''.join(L)
def replaceWholeText(self, content):
# XXX This needs to be seriously changed if minidom ever
# supports EntityReference nodes.
parent = self.parentNode
n = self.previousSibling
while n is not None:
if n.nodeType in (Node.TEXT_NODE, Node.CDATA_SECTION_NODE):
next = n.previousSibling
parent.removeChild(n)
n = next
else:
break
n = self.nextSibling
if not content:
parent.removeChild(self)
while n is not None:
if n.nodeType in (Node.TEXT_NODE, Node.CDATA_SECTION_NODE):
next = n.nextSibling
parent.removeChild(n)
n = next
else:
break
if content:
self.data = content
return self
else:
return None
def _get_isWhitespaceInElementContent(self):
if self.data.strip():
return False
elem = _get_containing_element(self)
if elem is None:
return False
info = self.ownerDocument._get_elem_info(elem)
if info is None:
return False
else:
return info.isElementContent()
defproperty(Text, "isWhitespaceInElementContent",
doc="True iff this text node contains only whitespace"
" and is in element content.")
defproperty(Text, "wholeText",
doc="The text of all logically-adjacent text nodes.")
def _get_containing_element(node):
c = node.parentNode
while c is not None:
if c.nodeType == Node.ELEMENT_NODE:
return c
c = c.parentNode
return None
def _get_containing_entref(node):
c = node.parentNode
while c is not None:
if c.nodeType == Node.ENTITY_REFERENCE_NODE:
return c
c = c.parentNode
return None
class Comment(CharacterData):
nodeType = Node.COMMENT_NODE
nodeName = "#comment"
def __init__(self, data):
CharacterData.__init__(self)
self._data = data
def writexml(self, writer, indent="", addindent="", newl=""):
if "--" in self.data:
raise ValueError("'--' is not allowed in a comment node")
writer.write("%s<!--%s-->%s" % (indent, self.data, newl))
class CDATASection(Text):
__slots__ = ()
nodeType = Node.CDATA_SECTION_NODE
nodeName = "#cdata-section"
def writexml(self, writer, indent="", addindent="", newl=""):
if self.data.find("]]>") >= 0:
raise ValueError("']]>' not allowed in a CDATA section")
writer.write("<![CDATA[%s]]>" % self.data)
class ReadOnlySequentialNamedNodeMap(object):
__slots__ = '_seq',
def __init__(self, seq=()):
# seq should be a list or tuple
self._seq = seq
def __len__(self):
return len(self._seq)
def _get_length(self):
return len(self._seq)
def getNamedItem(self, name):
for n in self._seq:
if n.nodeName == name:
return n
def getNamedItemNS(self, namespaceURI, localName):
for n in self._seq:
if n.namespaceURI == namespaceURI and n.localName == localName:
return n
def __getitem__(self, name_or_tuple):
if isinstance(name_or_tuple, tuple):
node = self.getNamedItemNS(*name_or_tuple)
else:
node = self.getNamedItem(name_or_tuple)
if node is None:
raise KeyError(name_or_tuple)
return node
def item(self, index):
if index < 0:
return None
try:
return self._seq[index]
except IndexError:
return None
def removeNamedItem(self, name):
raise xml.dom.NoModificationAllowedErr(
"NamedNodeMap instance is read-only")
def removeNamedItemNS(self, namespaceURI, localName):
raise xml.dom.NoModificationAllowedErr(
"NamedNodeMap instance is read-only")
def setNamedItem(self, node):
raise xml.dom.NoModificationAllowedErr(
"NamedNodeMap instance is read-only")
def setNamedItemNS(self, node):
raise xml.dom.NoModificationAllowedErr(
"NamedNodeMap instance is read-only")
def __getstate__(self):
return [self._seq]
def __setstate__(self, state):
self._seq = state[0]
defproperty(ReadOnlySequentialNamedNodeMap, "length",
doc="Number of entries in the NamedNodeMap.")
class Identified:
"""Mix-in class that supports the publicId and systemId attributes."""
__slots__ = 'publicId', 'systemId'
def _identified_mixin_init(self, publicId, systemId):
self.publicId = publicId
self.systemId = systemId
def _get_publicId(self):
return self.publicId
def _get_systemId(self):
return self.systemId
class DocumentType(Identified, Childless, Node):
nodeType = Node.DOCUMENT_TYPE_NODE
nodeValue = None
name = None
publicId = None
systemId = None
internalSubset = None
def __init__(self, qualifiedName):
self.entities = ReadOnlySequentialNamedNodeMap()
self.notations = ReadOnlySequentialNamedNodeMap()
if qualifiedName:
prefix, localname = _nssplit(qualifiedName)
self.name = localname
self.nodeName = self.name
def _get_internalSubset(self):
return self.internalSubset
def cloneNode(self, deep):
if self.ownerDocument is None:
# it's ok
clone = DocumentType(None)
clone.name = self.name
clone.nodeName = self.name
operation = xml.dom.UserDataHandler.NODE_CLONED
if deep:
clone.entities._seq = []
clone.notations._seq = []
for n in self.notations._seq:
notation = Notation(n.nodeName, n.publicId, n.systemId)
clone.notations._seq.append(notation)
n._call_user_data_handler(operation, n, notation)
for e in self.entities._seq:
entity = Entity(e.nodeName, e.publicId, e.systemId,
e.notationName)
entity.actualEncoding = e.actualEncoding
entity.encoding = e.encoding
entity.version = e.version
clone.entities._seq.append(entity)
e._call_user_data_handler(operation, e, entity)
self._call_user_data_handler(operation, self, clone)
return clone
else:
return None
def writexml(self, writer, indent="", addindent="", newl=""):
writer.write("<!DOCTYPE ")
writer.write(self.name)
if self.publicId:
writer.write("%s PUBLIC '%s'%s '%s'"
% (newl, self.publicId, newl, self.systemId))
elif self.systemId:
writer.write("%s SYSTEM '%s'" % (newl, self.systemId))
if self.internalSubset is not None:
writer.write(" [")
writer.write(self.internalSubset)
writer.write("]")
writer.write(">"+newl)
class Entity(Identified, Node):
attributes = None
nodeType = Node.ENTITY_NODE
nodeValue = None
actualEncoding = None
encoding = None
version = None
def __init__(self, name, publicId, systemId, notation):
self.nodeName = name
self.notationName = notation
self.childNodes = NodeList()
self._identified_mixin_init(publicId, systemId)
def _get_actualEncoding(self):
return self.actualEncoding
def _get_encoding(self):
return self.encoding
def _get_version(self):
return self.version
def appendChild(self, newChild):
raise xml.dom.HierarchyRequestErr(
"cannot append children to an entity node")
def insertBefore(self, newChild, refChild):
raise xml.dom.HierarchyRequestErr(
"cannot insert children below an entity node")
def removeChild(self, oldChild):
raise xml.dom.HierarchyRequestErr(
"cannot remove children from an entity node")
def replaceChild(self, newChild, oldChild):
raise xml.dom.HierarchyRequestErr(
"cannot replace children of an entity node")
class Notation(Identified, Childless, Node):
nodeType = Node.NOTATION_NODE
nodeValue = None
def __init__(self, name, publicId, systemId):
self.nodeName = name
self._identified_mixin_init(publicId, systemId)
class DOMImplementation(DOMImplementationLS):
_features = [("core", "1.0"),
("core", "2.0"),
("core", None),
("xml", "1.0"),
("xml", "2.0"),
("xml", None),
("ls-load", "3.0"),
("ls-load", None),
]
def hasFeature(self, feature, version):
if version == "":
version = None
return (feature.lower(), version) in self._features
def createDocument(self, namespaceURI, qualifiedName, doctype):
if doctype and doctype.parentNode is not None:
raise xml.dom.WrongDocumentErr(
"doctype object owned by another DOM tree")
doc = self._create_document()
add_root_element = not (namespaceURI is None
and qualifiedName is None
and doctype is None)
if not qualifiedName and add_root_element:
# The spec is unclear what to raise here; SyntaxErr
# would be the other obvious candidate. Since Xerces raises
# InvalidCharacterErr, and since SyntaxErr is not listed
# for createDocument, that seems to be the better choice.
# XXX: need to check for illegal characters here and in
# createElement.
# DOM Level III clears this up when talking about the return value
# of this function. If namespaceURI, qName and DocType are
# Null the document is returned without a document element
# Otherwise if doctype or namespaceURI are not None
# Then we go back to the above problem
raise xml.dom.InvalidCharacterErr("Element with no name")
if add_root_element:
prefix, localname = _nssplit(qualifiedName)
if prefix == "xml" \
and namespaceURI != "http://www.w3.org/XML/1998/namespace":
raise xml.dom.NamespaceErr("illegal use of 'xml' prefix")
if prefix and not namespaceURI:
raise xml.dom.NamespaceErr(
"illegal use of prefix without namespaces")
element = doc.createElementNS(namespaceURI, qualifiedName)
if doctype:
doc.appendChild(doctype)
doc.appendChild(element)
if doctype:
doctype.parentNode = doctype.ownerDocument = doc
doc.doctype = doctype
doc.implementation = self
return doc
def createDocumentType(self, qualifiedName, publicId, systemId):
doctype = DocumentType(qualifiedName)
doctype.publicId = publicId
doctype.systemId = systemId
return doctype
# DOM Level 3 (WD 9 April 2002)
def getInterface(self, feature):
if self.hasFeature(feature, None):
return self
else:
return None
# internal
def _create_document(self):
return Document()
class ElementInfo(object):
"""Object that represents content-model information for an element.
This implementation is not expected to be used in practice; DOM
builders should provide implementations which do the right thing
using information available to it.
"""
__slots__ = 'tagName',
def __init__(self, name):
self.tagName = name
def getAttributeType(self, aname):
return _no_type
def getAttributeTypeNS(self, namespaceURI, localName):
return _no_type
def isElementContent(self):
return False
def isEmpty(self):
"""Returns true iff this element is declared to have an EMPTY
content model."""
return False
def isId(self, aname):
"""Returns true iff the named attribute is a DTD-style ID."""
return False
def isIdNS(self, namespaceURI, localName):
"""Returns true iff the identified attribute is a DTD-style ID."""
return False
def __getstate__(self):
return self.tagName
def __setstate__(self, state):
self.tagName = state
def _clear_id_cache(node):
if node.nodeType == Node.DOCUMENT_NODE:
node._id_cache.clear()
node._id_search_stack = None
elif _in_document(node):
node.ownerDocument._id_cache.clear()
node.ownerDocument._id_search_stack= None
class Document(Node, DocumentLS):
__slots__ = ('_elem_info', 'doctype',
'_id_search_stack', 'childNodes', '_id_cache')
_child_node_types = (Node.ELEMENT_NODE, Node.PROCESSING_INSTRUCTION_NODE,
Node.COMMENT_NODE, Node.DOCUMENT_TYPE_NODE)
implementation = DOMImplementation()
nodeType = Node.DOCUMENT_NODE
nodeName = "#document"
nodeValue = None
attributes = None
parentNode = None
previousSibling = nextSibling = None
# Document attributes from Level 3 (WD 9 April 2002)
actualEncoding = None
encoding = None
standalone = None
version = None
strictErrorChecking = False
errorHandler = None
documentURI = None
_magic_id_count = 0
def __init__(self):
self.doctype = None
self.childNodes = NodeList()
# mapping of (namespaceURI, localName) -> ElementInfo
# and tagName -> ElementInfo
self._elem_info = {}
self._id_cache = {}
self._id_search_stack = None
def _get_elem_info(self, element):
if element.namespaceURI:
key = element.namespaceURI, element.localName
else:
key = element.tagName
return self._elem_info.get(key)
def _get_actualEncoding(self):
return self.actualEncoding
def _get_doctype(self):
return self.doctype
def _get_documentURI(self):
return self.documentURI
def _get_encoding(self):
return self.encoding
def _get_errorHandler(self):
return self.errorHandler
def _get_standalone(self):
return self.standalone
def _get_strictErrorChecking(self):
return self.strictErrorChecking
def _get_version(self):
return self.version
def appendChild(self, node):
if node.nodeType not in self._child_node_types:
raise xml.dom.HierarchyRequestErr(
"%s cannot be child of %s" % (repr(node), repr(self)))
if node.parentNode is not None:
# This needs to be done before the next test since this
# may *be* the document element, in which case it should
# end up re-ordered to the end.
node.parentNode.removeChild(node)
if node.nodeType == Node.ELEMENT_NODE \
and self._get_documentElement():
raise xml.dom.HierarchyRequestErr(
"two document elements disallowed")
return Node.appendChild(self, node)
def removeChild(self, oldChild):
try:
self.childNodes.remove(oldChild)
except ValueError:
raise xml.dom.NotFoundErr()
oldChild.nextSibling = oldChild.previousSibling = None
oldChild.parentNode = None
if self.documentElement is oldChild:
self.documentElement = None
return oldChild
def _get_documentElement(self):
for node in self.childNodes:
if node.nodeType == Node.ELEMENT_NODE:
return node
def unlink(self):
if self.doctype is not None:
self.doctype.unlink()
self.doctype = None
Node.unlink(self)
def cloneNode(self, deep):
if not deep:
return None
clone = self.implementation.createDocument(None, None, None)
clone.encoding = self.encoding
clone.standalone = self.standalone
clone.version = self.version
for n in self.childNodes:
childclone = _clone_node(n, deep, clone)
assert childclone.ownerDocument.isSameNode(clone)
clone.childNodes.append(childclone)
if childclone.nodeType == Node.DOCUMENT_NODE:
assert clone.documentElement is None
elif childclone.nodeType == Node.DOCUMENT_TYPE_NODE:
assert clone.doctype is None
clone.doctype = childclone
childclone.parentNode = clone
self._call_user_data_handler(xml.dom.UserDataHandler.NODE_CLONED,
self, clone)
return clone
def createDocumentFragment(self):
d = DocumentFragment()
d.ownerDocument = self
return d
def createElement(self, tagName):
e = Element(tagName)
e.ownerDocument = self
return e
def createTextNode(self, data):
if not isinstance(data, str):
raise TypeError("node contents must be a string")
t = Text()
t.data = data
t.ownerDocument = self
return t
def createCDATASection(self, data):
if not isinstance(data, str):
raise TypeError("node contents must be a string")
c = CDATASection()
c.data = data
c.ownerDocument = self
return c
def createComment(self, data):
c = Comment(data)
c.ownerDocument = self
return c
def createProcessingInstruction(self, target, data):
p = ProcessingInstruction(target, data)
p.ownerDocument = self
return p
def createAttribute(self, qName):
a = Attr(qName)
a.ownerDocument = self
a.value = ""
return a
def createElementNS(self, namespaceURI, qualifiedName):
prefix, localName = _nssplit(qualifiedName)
e = Element(qualifiedName, namespaceURI, prefix)
e.ownerDocument = self
return e
def createAttributeNS(self, namespaceURI, qualifiedName):
prefix, localName = _nssplit(qualifiedName)
a = Attr(qualifiedName, namespaceURI, localName, prefix)
a.ownerDocument = self
a.value = ""
return a
# A couple of implementation-specific helpers to create node types
# not supported by the W3C DOM specs:
def _create_entity(self, name, publicId, systemId, notationName):
e = Entity(name, publicId, systemId, notationName)
e.ownerDocument = self
return e
def _create_notation(self, name, publicId, systemId):
n = Notation(name, publicId, systemId)
n.ownerDocument = self
return n
def getElementById(self, id):
if id in self._id_cache:
return self._id_cache[id]
if not (self._elem_info or self._magic_id_count):
return None
stack = self._id_search_stack
if stack is None:
# we never searched before, or the cache has been cleared
stack = [self.documentElement]
self._id_search_stack = stack
elif not stack:
# Previous search was completed and cache is still valid;
# no matching node.
return None
result = None
while stack:
node = stack.pop()
# add child elements to stack for continued searching
stack.extend([child for child in node.childNodes
if child.nodeType in _nodeTypes_with_children])
# check this node
info = self._get_elem_info(node)
if info:
# We have to process all ID attributes before
# returning in order to get all the attributes set to
# be IDs using Element.setIdAttribute*().
for attr in node.attributes.values():
if attr.namespaceURI:
if info.isIdNS(attr.namespaceURI, attr.localName):
self._id_cache[attr.value] = node
if attr.value == id:
result = node
elif not node._magic_id_nodes:
break
elif info.isId(attr.name):
self._id_cache[attr.value] = node
if attr.value == id:
result = node
elif not node._magic_id_nodes:
break
elif attr._is_id:
self._id_cache[attr.value] = node
if attr.value == id:
result = node
elif node._magic_id_nodes == 1:
break
elif node._magic_id_nodes:
for attr in node.attributes.values():
if attr._is_id:
self._id_cache[attr.value] = node
if attr.value == id:
result = node
if result is not None:
break
return result
def getElementsByTagName(self, name):
return _get_elements_by_tagName_helper(self, name, NodeList())
def getElementsByTagNameNS(self, namespaceURI, localName):
return _get_elements_by_tagName_ns_helper(
self, namespaceURI, localName, NodeList())
def isSupported(self, feature, version):
return self.implementation.hasFeature(feature, version)
def importNode(self, node, deep):
if node.nodeType == Node.DOCUMENT_NODE:
raise xml.dom.NotSupportedErr("cannot import document nodes")
elif node.nodeType == Node.DOCUMENT_TYPE_NODE:
raise xml.dom.NotSupportedErr("cannot import document type nodes")
return _clone_node(node, deep, self)
def writexml(self, writer, indent="", addindent="", newl="", encoding=None):
if encoding is None:
writer.write('<?xml version="1.0" ?>'+newl)
else:
writer.write('<?xml version="1.0" encoding="%s"?>%s' % (
encoding, newl))
for node in self.childNodes:
node.writexml(writer, indent, addindent, newl)
# DOM Level 3 (WD 9 April 2002)
def renameNode(self, n, namespaceURI, name):
if n.ownerDocument is not self:
raise xml.dom.WrongDocumentErr(
"cannot rename nodes from other documents;\n"
"expected %s,\nfound %s" % (self, n.ownerDocument))
if n.nodeType not in (Node.ELEMENT_NODE, Node.ATTRIBUTE_NODE):
raise xml.dom.NotSupportedErr(
"renameNode() only applies to element and attribute nodes")
if namespaceURI != EMPTY_NAMESPACE:
if ':' in name:
prefix, localName = name.split(':', 1)
if ( prefix == "xmlns"
and namespaceURI != xml.dom.XMLNS_NAMESPACE):
raise xml.dom.NamespaceErr(
"illegal use of 'xmlns' prefix")
else:
if ( name == "xmlns"
and namespaceURI != xml.dom.XMLNS_NAMESPACE
and n.nodeType == Node.ATTRIBUTE_NODE):
raise xml.dom.NamespaceErr(
"illegal use of the 'xmlns' attribute")
prefix = None
localName = name
else:
prefix = None
localName = None
if n.nodeType == Node.ATTRIBUTE_NODE:
element = n.ownerElement
if element is not None:
is_id = n._is_id
element.removeAttributeNode(n)
else:
element = None
n.prefix = prefix
n._localName = localName
n.namespaceURI = namespaceURI
n.nodeName = name
if n.nodeType == Node.ELEMENT_NODE:
n.tagName = name
else:
# attribute node
n.name = name
if element is not None:
element.setAttributeNode(n)
if is_id:
element.setIdAttributeNode(n)
# It's not clear from a semantic perspective whether we should
# call the user data handlers for the NODE_RENAMED event since
# we're re-using the existing node. The draft spec has been
# interpreted as meaning "no, don't call the handler unless a
# new node is created."
return n
defproperty(Document, "documentElement",
doc="Top-level element of this document.")
def _clone_node(node, deep, newOwnerDocument):
"""
Clone a node and give it the new owner document.
Called by Node.cloneNode and Document.importNode
"""
if node.ownerDocument.isSameNode(newOwnerDocument):
operation = xml.dom.UserDataHandler.NODE_CLONED
else:
operation = xml.dom.UserDataHandler.NODE_IMPORTED
if node.nodeType == Node.ELEMENT_NODE:
clone = newOwnerDocument.createElementNS(node.namespaceURI,
node.nodeName)
for attr in node.attributes.values():
clone.setAttributeNS(attr.namespaceURI, attr.nodeName, attr.value)
a = clone.getAttributeNodeNS(attr.namespaceURI, attr.localName)
a.specified = attr.specified
if deep:
for child in node.childNodes:
c = _clone_node(child, deep, newOwnerDocument)
clone.appendChild(c)
elif node.nodeType == Node.DOCUMENT_FRAGMENT_NODE:
clone = newOwnerDocument.createDocumentFragment()
if deep:
for child in node.childNodes:
c = _clone_node(child, deep, newOwnerDocument)
clone.appendChild(c)
elif node.nodeType == Node.TEXT_NODE:
clone = newOwnerDocument.createTextNode(node.data)
elif node.nodeType == Node.CDATA_SECTION_NODE:
clone = newOwnerDocument.createCDATASection(node.data)
elif node.nodeType == Node.PROCESSING_INSTRUCTION_NODE:
clone = newOwnerDocument.createProcessingInstruction(node.target,
node.data)
elif node.nodeType == Node.COMMENT_NODE:
clone = newOwnerDocument.createComment(node.data)
elif node.nodeType == Node.ATTRIBUTE_NODE:
clone = newOwnerDocument.createAttributeNS(node.namespaceURI,
node.nodeName)
clone.specified = True
clone.value = node.value
elif node.nodeType == Node.DOCUMENT_TYPE_NODE:
assert node.ownerDocument is not newOwnerDocument
operation = xml.dom.UserDataHandler.NODE_IMPORTED
clone = newOwnerDocument.implementation.createDocumentType(
node.name, node.publicId, node.systemId)
clone.ownerDocument = newOwnerDocument
if deep:
clone.entities._seq = []
clone.notations._seq = []
for n in node.notations._seq:
notation = Notation(n.nodeName, n.publicId, n.systemId)
notation.ownerDocument = newOwnerDocument
clone.notations._seq.append(notation)
if hasattr(n, '_call_user_data_handler'):
n._call_user_data_handler(operation, n, notation)
for e in node.entities._seq:
entity = Entity(e.nodeName, e.publicId, e.systemId,
e.notationName)
entity.actualEncoding = e.actualEncoding
entity.encoding = e.encoding
entity.version = e.version
entity.ownerDocument = newOwnerDocument
clone.entities._seq.append(entity)
if hasattr(e, '_call_user_data_handler'):
e._call_user_data_handler(operation, e, entity)
else:
# Note the cloning of Document and DocumentType nodes is
# implementation specific. minidom handles those cases
# directly in the cloneNode() methods.
raise xml.dom.NotSupportedErr("Cannot clone node %s" % repr(node))
# Check for _call_user_data_handler() since this could conceivably
# used with other DOM implementations (one of the FourThought
# DOMs, perhaps?).
if hasattr(node, '_call_user_data_handler'):
node._call_user_data_handler(operation, node, clone)
return clone
def _nssplit(qualifiedName):
fields = qualifiedName.split(':', 1)
if len(fields) == 2:
return fields
else:
return (None, fields[0])
def _do_pulldom_parse(func, args, kwargs):
events = func(*args, **kwargs)
toktype, rootNode = events.getEvent()
events.expandNode(rootNode)
events.clear()
return rootNode
def parse(file, parser=None, bufsize=None):
"""Parse a file into a DOM by filename or file object."""
if parser is None and not bufsize:
from xml.dom import expatbuilder
return expatbuilder.parse(file)
else:
from xml.dom import pulldom
return _do_pulldom_parse(pulldom.parse, (file,),
{'parser': parser, 'bufsize': bufsize})
def parseString(string, parser=None):
"""Parse a file into a DOM from a string."""
if parser is None:
from xml.dom import expatbuilder
return expatbuilder.parseString(string)
else:
from xml.dom import pulldom
return _do_pulldom_parse(pulldom.parseString, (string,),
{'parser': parser})
def getDOMImplementation(features=None):
if features:
if isinstance(features, str):
features = domreg._parse_feature_string(features)
for f, v in features:
if not Document.implementation.hasFeature(f, v):
return None
return Document.implementation
| 66,819 | 1,982 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/collections/abc.py | from _collections_abc import *
from _collections_abc import __all__
if __name__ == 'PYOBJ.COM':
AsyncGenerator = 0
AsyncIterable = 0
AsyncIterator = 0
Awaitable = 0
ByteString = 0
Callable = 0
Collection = 0
Container = 0
Coroutine = 0
Generator = 0
Hashable = 0
ItemsView = 0
Iterable = 0
Iterator = 0
KeysView = 0
Mapping = 0
MappingView = 0
MutableMapping = 0
MutableSequence = 0
MutableSet = 0
Reversible = 0
Sequence = 0
Set = 0
Sized = 0
ValuesView = 0
| 560 | 30 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/collections/__init__.py | '''This module implements specialized container datatypes providing
alternatives to Python's general purpose built-in containers, dict,
list, set, and tuple.
* namedtuple factory function for creating tuple subclasses with named fields
* deque list-like container with fast appends and pops on either end
* ChainMap dict-like class for creating a single view of multiple mappings
* Counter dict subclass for counting hashable objects
* OrderedDict dict subclass that remembers the order entries were added
* defaultdict dict subclass that calls a factory function to supply missing values
* UserDict wrapper around dictionary objects for easier dict subclassing
* UserList wrapper around list objects for easier list subclassing
* UserString wrapper around string objects for easier string subclassing
'''
__all__ = ['deque', 'defaultdict', 'namedtuple', 'UserDict', 'UserList',
'UserString', 'Counter', 'OrderedDict', 'ChainMap']
# For backwards compatibility, continue to make the collections ABCs
# available through the collections module. But don't mandate it, in
# cases where we're compiling with PYOBJ.COM.
try:
from _collections_abc import *
import _collections_abc
__all__ += _collections_abc.__all__
except ImportError:
pass
from operator import itemgetter as _itemgetter, eq as _eq
from keyword import iskeyword as _iskeyword
import sys as _sys
import heapq as _heapq
from _weakref import proxy as _proxy
from itertools import repeat as _repeat, chain as _chain, starmap as _starmap
from reprlib import recursive_repr as _recursive_repr
try:
from _collections import deque
except ImportError:
pass
else:
MutableSequence.register(deque)
try:
from _collections import defaultdict
except ImportError:
pass
################################################################################
### OrderedDict
################################################################################
class _OrderedDictKeysView(KeysView):
def __reversed__(self):
yield from reversed(self._mapping)
class _OrderedDictItemsView(ItemsView):
def __reversed__(self):
for key in reversed(self._mapping):
yield (key, self._mapping[key])
class _OrderedDictValuesView(ValuesView):
def __reversed__(self):
for key in reversed(self._mapping):
yield self._mapping[key]
class _Link(object):
__slots__ = 'prev', 'next', 'key', '__weakref__'
class OrderedDict(dict):
'Dictionary that remembers insertion order'
# An inherited dict maps keys to values.
# The inherited dict provides __getitem__, __len__, __contains__, and get.
# The remaining methods are order-aware.
# Big-O running times for all methods are the same as regular dictionaries.
# The internal self.__map dict maps keys to links in a doubly linked list.
# The circular doubly linked list starts and ends with a sentinel element.
# The sentinel element never gets deleted (this simplifies the algorithm).
# The sentinel is in self.__hardroot with a weakref proxy in self.__root.
# The prev links are weakref proxies (to prevent circular references).
# Individual links are kept alive by the hard reference in self.__map.
# Those hard references disappear when a key is deleted from an OrderedDict.
def __init__(*args, **kwds):
'''Initialize an ordered dictionary. The signature is the same as
regular dictionaries. Keyword argument order is preserved.
'''
if not args:
raise TypeError("descriptor '__init__' of 'OrderedDict' object "
"needs an argument")
self, *args = args
if len(args) > 1:
raise TypeError('expected at most 1 arguments, got %d' % len(args))
try:
self.__root
except AttributeError:
self.__hardroot = _Link()
self.__root = root = _proxy(self.__hardroot)
root.prev = root.next = root
self.__map = {}
self.__update(*args, **kwds)
def __setitem__(self, key, value,
dict_setitem=dict.__setitem__, proxy=_proxy, Link=_Link):
'od.__setitem__(i, y) <==> od[i]=y'
# Setting a new item creates a new link at the end of the linked list,
# and the inherited dictionary is updated with the new key/value pair.
if key not in self:
self.__map[key] = link = Link()
root = self.__root
last = root.prev
link.prev, link.next, link.key = last, root, key
last.next = link
root.prev = proxy(link)
dict_setitem(self, key, value)
def __delitem__(self, key, dict_delitem=dict.__delitem__):
'od.__delitem__(y) <==> del od[y]'
# Deleting an existing item uses self.__map to find the link which gets
# removed by updating the links in the predecessor and successor nodes.
dict_delitem(self, key)
link = self.__map.pop(key)
link_prev = link.prev
link_next = link.next
link_prev.next = link_next
link_next.prev = link_prev
link.prev = None
link.next = None
def __iter__(self):
'od.__iter__() <==> iter(od)'
# Traverse the linked list in order.
root = self.__root
curr = root.next
while curr is not root:
yield curr.key
curr = curr.next
def __reversed__(self):
'od.__reversed__() <==> reversed(od)'
# Traverse the linked list in reverse order.
root = self.__root
curr = root.prev
while curr is not root:
yield curr.key
curr = curr.prev
def clear(self):
'od.clear() -> None. Remove all items from od.'
root = self.__root
root.prev = root.next = root
self.__map.clear()
dict.clear(self)
def popitem(self, last=True):
'''Remove and return a (key, value) pair from the dictionary.
Pairs are returned in LIFO order if last is true or FIFO order if false.
'''
if not self:
raise KeyError('dictionary is empty')
root = self.__root
if last:
link = root.prev
link_prev = link.prev
link_prev.next = root
root.prev = link_prev
else:
link = root.next
link_next = link.next
root.next = link_next
link_next.prev = root
key = link.key
del self.__map[key]
value = dict.pop(self, key)
return key, value
def move_to_end(self, key, last=True):
'''Move an existing element to the end (or beginning if last==False).
Raises KeyError if the element does not exist.
When last=True, acts like a fast version of self[key]=self.pop(key).
'''
link = self.__map[key]
link_prev = link.prev
link_next = link.next
soft_link = link_next.prev
link_prev.next = link_next
link_next.prev = link_prev
root = self.__root
if last:
last = root.prev
link.prev = last
link.next = root
root.prev = soft_link
last.next = link
else:
first = root.next
link.prev = root
link.next = first
first.prev = soft_link
root.next = link
def __sizeof__(self):
sizeof = _sys.getsizeof
n = len(self) + 1 # number of links including root
size = sizeof(self.__dict__) # instance dictionary
size += sizeof(self.__map) * 2 # internal dict and inherited dict
size += sizeof(self.__hardroot) * n # link objects
size += sizeof(self.__root) * n # proxy objects
return size
update = __update = MutableMapping.update
def keys(self):
"D.keys() -> a set-like object providing a view on D's keys"
return _OrderedDictKeysView(self)
def items(self):
"D.items() -> a set-like object providing a view on D's items"
return _OrderedDictItemsView(self)
def values(self):
"D.values() -> an object providing a view on D's values"
return _OrderedDictValuesView(self)
__ne__ = MutableMapping.__ne__
__marker = object()
def pop(self, key, default=__marker):
'''od.pop(k[,d]) -> v, remove specified key and return the corresponding
value. If key is not found, d is returned if given, otherwise KeyError
is raised.
'''
if key in self:
result = self[key]
del self[key]
return result
if default is self.__marker:
raise KeyError(key)
return default
def setdefault(self, key, default=None):
'od.setdefault(k[,d]) -> od.get(k,d), also set od[k]=d if k not in od'
if key in self:
return self[key]
self[key] = default
return default
@_recursive_repr()
def __repr__(self):
'od.__repr__() <==> repr(od)'
if not self:
return '%s()' % (self.__class__.__name__,)
return '%s(%r)' % (self.__class__.__name__, list(self.items()))
def __reduce__(self):
'Return state information for pickling'
inst_dict = vars(self).copy()
for k in vars(OrderedDict()):
inst_dict.pop(k, None)
return self.__class__, (), inst_dict or None, None, iter(self.items())
def copy(self):
'od.copy() -> a shallow copy of od'
return self.__class__(self)
@classmethod
def fromkeys(cls, iterable, value=None):
'''OD.fromkeys(S[, v]) -> New ordered dictionary with keys from S.
If not specified, the value defaults to None.
'''
self = cls()
for key in iterable:
self[key] = value
return self
def __eq__(self, other):
'''od.__eq__(y) <==> od==y. Comparison to another OD is order-sensitive
while comparison to a regular mapping is order-insensitive.
'''
if isinstance(other, OrderedDict):
return dict.__eq__(self, other) and all(map(_eq, self, other))
return dict.__eq__(self, other)
try:
from _collections import OrderedDict
except ImportError:
# Leave the pure Python version in place.
pass
################################################################################
### namedtuple
################################################################################
_class_template = """\
from builtins import property as _property, tuple as _tuple
from operator import itemgetter as _itemgetter
from collections import OrderedDict
class {typename}(tuple):
'{typename}({arg_list})'
__slots__ = ()
_fields = {field_names!r}
def __new__(_cls, {arg_list}):
'Create new instance of {typename}({arg_list})'
return _tuple.__new__(_cls, ({arg_list}))
@classmethod
def _make(cls, iterable, new=tuple.__new__, len=len):
'Make a new {typename} object from a sequence or iterable'
result = new(cls, iterable)
if len(result) != {num_fields:d}:
raise TypeError('Expected {num_fields:d} arguments, got %d' % len(result))
return result
def _replace(_self, **kwds):
'Return a new {typename} object replacing specified fields with new values'
result = _self._make(map(kwds.pop, {field_names!r}, _self))
if kwds:
raise ValueError('Got unexpected field names: %r' % list(kwds))
return result
def __repr__(self):
'Return a nicely formatted representation string'
return self.__class__.__name__ + '({repr_fmt})' % self
def _asdict(self):
'Return a new OrderedDict which maps field names to their values.'
return OrderedDict(zip(self._fields, self))
def __getnewargs__(self):
'Return self as a plain tuple. Used by copy and pickle.'
return tuple(self)
{field_defs}
"""
_repr_template = '{name}=%r'
_field_template = '''\
{name} = _property(_itemgetter({index:d}), doc='Alias for field number {index:d}')
'''
def namedtuple(typename, field_names, *, verbose=False, rename=False, module=None):
"""Returns a new subclass of tuple with named fields.
>>> Point = namedtuple('Point', ['x', 'y'])
>>> Point.__doc__ # docstring for the new class
'Point(x, y)'
>>> p = Point(11, y=22) # instantiate with positional args or keywords
>>> p[0] + p[1] # indexable like a plain tuple
33
>>> x, y = p # unpack like a regular tuple
>>> x, y
(11, 22)
>>> p.x + p.y # fields also accessible by name
33
>>> d = p._asdict() # convert to a dictionary
>>> d['x']
11
>>> Point(**d) # convert from a dictionary
Point(x=11, y=22)
>>> p._replace(x=100) # _replace() is like str.replace() but targets named fields
Point(x=100, y=22)
"""
# Validate the field names. At the user's option, either generate an error
# message or automatically replace the field name with a valid name.
if isinstance(field_names, str):
field_names = field_names.replace(',', ' ').split()
field_names = list(map(str, field_names))
typename = str(typename)
if rename:
seen = set()
for index, name in enumerate(field_names):
if (not name.isidentifier()
or _iskeyword(name)
or name.startswith('_')
or name in seen):
field_names[index] = '_%d' % index
seen.add(name)
for name in [typename] + field_names:
if type(name) is not str:
raise TypeError('Type names and field names must be strings')
if not name.isidentifier():
raise ValueError('Type names and field names must be valid '
'identifiers: %r' % name)
if _iskeyword(name):
raise ValueError('Type names and field names cannot be a '
'keyword: %r' % name)
seen = set()
for name in field_names:
if name.startswith('_') and not rename:
raise ValueError('Field names cannot start with an underscore: '
'%r' % name)
if name in seen:
raise ValueError('Encountered duplicate field name: %r' % name)
seen.add(name)
# Fill-in the class template
class_definition = _class_template.format(
typename = typename,
field_names = tuple(field_names),
num_fields = len(field_names),
arg_list = repr(tuple(field_names)).replace("'", "")[1:-1],
repr_fmt = ', '.join(_repr_template.format(name=name)
for name in field_names),
field_defs = '\n'.join(_field_template.format(index=index, name=name)
for index, name in enumerate(field_names))
)
# Execute the template string in a temporary namespace and support
# tracing utilities by setting a value for frame.f_globals['__name__']
namespace = dict(__name__='namedtuple_%s' % typename)
exec(class_definition, namespace)
result = namespace[typename]
result._source = class_definition
if verbose:
print(result._source)
# For pickling to work, the __module__ variable needs to be set to the frame
# where the named tuple is created. Bypass this step in environments where
# sys._getframe is not defined (Jython for example) or sys._getframe is not
# defined for arguments greater than 0 (IronPython), or where the user has
# specified a particular module.
if module is None:
try:
module = _sys._getframe(1).f_globals.get('__name__', '__main__')
except (AttributeError, ValueError):
pass
if module is not None:
result.__module__ = module
return result
########################################################################
### Counter
########################################################################
def _count_elements(mapping, iterable):
'Tally elements from the iterable.'
mapping_get = mapping.get
for elem in iterable:
mapping[elem] = mapping_get(elem, 0) + 1
try: # Load C helper function if available
from _collections import _count_elements
except ImportError:
pass
class Counter(dict):
'''Dict subclass for counting hashable items. Sometimes called a bag
or multiset. Elements are stored as dictionary keys and their counts
are stored as dictionary values.
>>> c = Counter('abcdeabcdabcaba') # count elements from a string
>>> c.most_common(3) # three most common elements
[('a', 5), ('b', 4), ('c', 3)]
>>> sorted(c) # list all unique elements
['a', 'b', 'c', 'd', 'e']
>>> ''.join(sorted(c.elements())) # list elements with repetitions
'aaaaabbbbcccdde'
>>> sum(c.values()) # total of all counts
15
>>> c['a'] # count of letter 'a'
5
>>> for elem in 'shazam': # update counts from an iterable
... c[elem] += 1 # by adding 1 to each element's count
>>> c['a'] # now there are seven 'a'
7
>>> del c['b'] # remove all 'b'
>>> c['b'] # now there are zero 'b'
0
>>> d = Counter('simsalabim') # make another counter
>>> c.update(d) # add in the second counter
>>> c['a'] # now there are nine 'a'
9
>>> c.clear() # empty the counter
>>> c
Counter()
Note: If a count is set to zero or reduced to zero, it will remain
in the counter until the entry is deleted or the counter is cleared:
>>> c = Counter('aaabbc')
>>> c['b'] -= 2 # reduce the count of 'b' by two
>>> c.most_common() # 'b' is still in, but its count is zero
[('a', 3), ('c', 1), ('b', 0)]
'''
# References:
# http://en.wikipedia.org/wiki/Multiset
# http://www.gnu.org/software/smalltalk/manual-base/html_node/Bag.html
# http://www.demo2s.com/Tutorial/Cpp/0380__set-multiset/Catalog0380__set-multiset.htm
# http://code.activestate.com/recipes/259174/
# Knuth, TAOCP Vol. II section 4.6.3
def __init__(*args, **kwds):
'''Create a new, empty Counter object. And if given, count elements
from an input iterable. Or, initialize the count from another mapping
of elements to their counts.
>>> c = Counter() # a new, empty counter
>>> c = Counter('gallahad') # a new counter from an iterable
>>> c = Counter({'a': 4, 'b': 2}) # a new counter from a mapping
>>> c = Counter(a=4, b=2) # a new counter from keyword args
'''
if not args:
raise TypeError("descriptor '__init__' of 'Counter' object "
"needs an argument")
self, *args = args
if len(args) > 1:
raise TypeError('expected at most 1 arguments, got %d' % len(args))
super(Counter, self).__init__()
self.update(*args, **kwds)
def __missing__(self, key):
'The count of elements not in the Counter is zero.'
# Needed so that self[missing_item] does not raise KeyError
return 0
def most_common(self, n=None):
'''List the n most common elements and their counts from the most
common to the least. If n is None, then list all element counts.
>>> Counter('abcdeabcdabcaba').most_common(3)
[('a', 5), ('b', 4), ('c', 3)]
'''
# Emulate Bag.sortedByCount from Smalltalk
if n is None:
return sorted(self.items(), key=_itemgetter(1), reverse=True)
return _heapq.nlargest(n, self.items(), key=_itemgetter(1))
def elements(self):
'''Iterator over elements repeating each as many times as its count.
>>> c = Counter('ABCABC')
>>> sorted(c.elements())
['A', 'A', 'B', 'B', 'C', 'C']
# Knuth's example for prime factors of 1836: 2**2 * 3**3 * 17**1
>>> prime_factors = Counter({2: 2, 3: 3, 17: 1})
>>> product = 1
>>> for factor in prime_factors.elements(): # loop over factors
... product *= factor # and multiply them
>>> product
1836
Note, if an element's count has been set to zero or is a negative
number, elements() will ignore it.
'''
# Emulate Bag.do from Smalltalk and Multiset.begin from C++.
return _chain.from_iterable(_starmap(_repeat, self.items()))
# Override dict methods where necessary
@classmethod
def fromkeys(cls, iterable, v=None):
# There is no equivalent method for counters because setting v=1
# means that no element can have a count greater than one.
raise NotImplementedError(
'Counter.fromkeys() is undefined. Use Counter(iterable) instead.')
def update(*args, **kwds):
'''Like dict.update() but add counts instead of replacing them.
Source can be an iterable, a dictionary, or another Counter instance.
>>> c = Counter('which')
>>> c.update('witch') # add elements from another iterable
>>> d = Counter('watch')
>>> c.update(d) # add elements from another counter
>>> c['h'] # four 'h' in which, witch, and watch
4
'''
# The regular dict.update() operation makes no sense here because the
# replace behavior results in the some of original untouched counts
# being mixed-in with all of the other counts for a mismash that
# doesn't have a straight-forward interpretation in most counting
# contexts. Instead, we implement straight-addition. Both the inputs
# and outputs are allowed to contain zero and negative counts.
if not args:
raise TypeError("descriptor 'update' of 'Counter' object "
"needs an argument")
self, *args = args
if len(args) > 1:
raise TypeError('expected at most 1 arguments, got %d' % len(args))
iterable = args[0] if args else None
if iterable is not None:
if isinstance(iterable, Mapping):
if self:
self_get = self.get
for elem, count in iterable.items():
self[elem] = count + self_get(elem, 0)
else:
super(Counter, self).update(iterable) # fast path when counter is empty
else:
_count_elements(self, iterable)
if kwds:
self.update(kwds)
def subtract(*args, **kwds):
'''Like dict.update() but subtracts counts instead of replacing them.
Counts can be reduced below zero. Both the inputs and outputs are
allowed to contain zero and negative counts.
Source can be an iterable, a dictionary, or another Counter instance.
>>> c = Counter('which')
>>> c.subtract('witch') # subtract elements from another iterable
>>> c.subtract(Counter('watch')) # subtract elements from another counter
>>> c['h'] # 2 in which, minus 1 in witch, minus 1 in watch
0
>>> c['w'] # 1 in which, minus 1 in witch, minus 1 in watch
-1
'''
if not args:
raise TypeError("descriptor 'subtract' of 'Counter' object "
"needs an argument")
self, *args = args
if len(args) > 1:
raise TypeError('expected at most 1 arguments, got %d' % len(args))
iterable = args[0] if args else None
if iterable is not None:
self_get = self.get
if isinstance(iterable, Mapping):
for elem, count in iterable.items():
self[elem] = self_get(elem, 0) - count
else:
for elem in iterable:
self[elem] = self_get(elem, 0) - 1
if kwds:
self.subtract(kwds)
def copy(self):
'Return a shallow copy.'
return self.__class__(self)
def __reduce__(self):
return self.__class__, (dict(self),)
def __delitem__(self, elem):
'Like dict.__delitem__() but does not raise KeyError for missing values.'
if elem in self:
super().__delitem__(elem)
def __repr__(self):
if not self:
return '%s()' % self.__class__.__name__
try:
items = ', '.join(map('%r: %r'.__mod__, self.most_common()))
return '%s({%s})' % (self.__class__.__name__, items)
except TypeError:
# handle case where values are not orderable
return '{0}({1!r})'.format(self.__class__.__name__, dict(self))
# Multiset-style mathematical operations discussed in:
# Knuth TAOCP Volume II section 4.6.3 exercise 19
# and at http://en.wikipedia.org/wiki/Multiset
#
# Outputs guaranteed to only include positive counts.
#
# To strip negative and zero counts, add-in an empty counter:
# c += Counter()
def __add__(self, other):
'''Add counts from two counters.
>>> Counter('abbb') + Counter('bcc')
Counter({'b': 4, 'c': 2, 'a': 1})
'''
if not isinstance(other, Counter):
return NotImplemented
result = Counter()
for elem, count in self.items():
newcount = count + other[elem]
if newcount > 0:
result[elem] = newcount
for elem, count in other.items():
if elem not in self and count > 0:
result[elem] = count
return result
def __sub__(self, other):
''' Subtract count, but keep only results with positive counts.
>>> Counter('abbbc') - Counter('bccd')
Counter({'b': 2, 'a': 1})
'''
if not isinstance(other, Counter):
return NotImplemented
result = Counter()
for elem, count in self.items():
newcount = count - other[elem]
if newcount > 0:
result[elem] = newcount
for elem, count in other.items():
if elem not in self and count < 0:
result[elem] = 0 - count
return result
def __or__(self, other):
'''Union is the maximum of value in either of the input counters.
>>> Counter('abbb') | Counter('bcc')
Counter({'b': 3, 'c': 2, 'a': 1})
'''
if not isinstance(other, Counter):
return NotImplemented
result = Counter()
for elem, count in self.items():
other_count = other[elem]
newcount = other_count if count < other_count else count
if newcount > 0:
result[elem] = newcount
for elem, count in other.items():
if elem not in self and count > 0:
result[elem] = count
return result
def __and__(self, other):
''' Intersection is the minimum of corresponding counts.
>>> Counter('abbb') & Counter('bcc')
Counter({'b': 1})
'''
if not isinstance(other, Counter):
return NotImplemented
result = Counter()
for elem, count in self.items():
other_count = other[elem]
newcount = count if count < other_count else other_count
if newcount > 0:
result[elem] = newcount
return result
def __pos__(self):
'Adds an empty counter, effectively stripping negative and zero counts'
result = Counter()
for elem, count in self.items():
if count > 0:
result[elem] = count
return result
def __neg__(self):
'''Subtracts from an empty counter. Strips positive and zero counts,
and flips the sign on negative counts.
'''
result = Counter()
for elem, count in self.items():
if count < 0:
result[elem] = 0 - count
return result
def _keep_positive(self):
'''Internal method to strip elements with a negative or zero count'''
nonpositive = [elem for elem, count in self.items() if not count > 0]
for elem in nonpositive:
del self[elem]
return self
def __iadd__(self, other):
'''Inplace add from another counter, keeping only positive counts.
>>> c = Counter('abbb')
>>> c += Counter('bcc')
>>> c
Counter({'b': 4, 'c': 2, 'a': 1})
'''
for elem, count in other.items():
self[elem] += count
return self._keep_positive()
def __isub__(self, other):
'''Inplace subtract counter, but keep only results with positive counts.
>>> c = Counter('abbbc')
>>> c -= Counter('bccd')
>>> c
Counter({'b': 2, 'a': 1})
'''
for elem, count in other.items():
self[elem] -= count
return self._keep_positive()
def __ior__(self, other):
'''Inplace union is the maximum of value from either counter.
>>> c = Counter('abbb')
>>> c |= Counter('bcc')
>>> c
Counter({'b': 3, 'c': 2, 'a': 1})
'''
for elem, other_count in other.items():
count = self[elem]
if other_count > count:
self[elem] = other_count
return self._keep_positive()
def __iand__(self, other):
'''Inplace intersection is the minimum of corresponding counts.
>>> c = Counter('abbb')
>>> c &= Counter('bcc')
>>> c
Counter({'b': 1})
'''
for elem, count in self.items():
other_count = other[elem]
if other_count < count:
self[elem] = other_count
return self._keep_positive()
########################################################################
### ChainMap
########################################################################
class ChainMap(MutableMapping):
''' A ChainMap groups multiple dicts (or other mappings) together
to create a single, updateable view.
The underlying mappings are stored in a list. That list is public and can
be accessed or updated using the *maps* attribute. There is no other
state.
Lookups search the underlying mappings successively until a key is found.
In contrast, writes, updates, and deletions only operate on the first
mapping.
'''
def __init__(self, *maps):
'''Initialize a ChainMap by setting *maps* to the given mappings.
If no mappings are provided, a single empty dictionary is used.
'''
self.maps = list(maps) or [{}] # always at least one map
def __missing__(self, key):
raise KeyError(key)
def __getitem__(self, key):
for mapping in self.maps:
try:
return mapping[key] # can't use 'key in mapping' with defaultdict
except KeyError:
pass
return self.__missing__(key) # support subclasses that define __missing__
def get(self, key, default=None):
return self[key] if key in self else default
def __len__(self):
return len(set().union(*self.maps)) # reuses stored hash values if possible
def __iter__(self):
return iter(set().union(*self.maps))
def __contains__(self, key):
return any(key in m for m in self.maps)
def __bool__(self):
return any(self.maps)
@_recursive_repr()
def __repr__(self):
return '{0.__class__.__name__}({1})'.format(
self, ', '.join(map(repr, self.maps)))
@classmethod
def fromkeys(cls, iterable, *args):
'Create a ChainMap with a single dict created from the iterable.'
return cls(dict.fromkeys(iterable, *args))
def copy(self):
'New ChainMap or subclass with a new copy of maps[0] and refs to maps[1:]'
return self.__class__(self.maps[0].copy(), *self.maps[1:])
__copy__ = copy
def new_child(self, m=None): # like Django's Context.push()
'''New ChainMap with a new map followed by all previous maps.
If no map is provided, an empty dict is used.
'''
if m is None:
m = {}
return self.__class__(m, *self.maps)
@property
def parents(self): # like Django's Context.pop()
'New ChainMap from maps[1:].'
return self.__class__(*self.maps[1:])
def __setitem__(self, key, value):
self.maps[0][key] = value
def __delitem__(self, key):
try:
del self.maps[0][key]
except KeyError:
raise KeyError('Key not found in the first mapping: {!r}'.format(key))
def popitem(self):
'Remove and return an item pair from maps[0]. Raise KeyError is maps[0] is empty.'
try:
return self.maps[0].popitem()
except KeyError:
raise KeyError('No keys found in the first mapping.')
def pop(self, key, *args):
'Remove *key* from maps[0] and return its value. Raise KeyError if *key* not in maps[0].'
try:
return self.maps[0].pop(key, *args)
except KeyError:
raise KeyError('Key not found in the first mapping: {!r}'.format(key))
def clear(self):
'Clear maps[0], leaving maps[1:] intact.'
self.maps[0].clear()
################################################################################
### UserDict
################################################################################
class UserDict(MutableMapping):
# Start by filling-out the abstract methods
def __init__(*args, **kwargs):
if not args:
raise TypeError("descriptor '__init__' of 'UserDict' object "
"needs an argument")
self, *args = args
if len(args) > 1:
raise TypeError('expected at most 1 arguments, got %d' % len(args))
if args:
dict = args[0]
elif 'dict' in kwargs:
dict = kwargs.pop('dict')
import warnings
warnings.warn("Passing 'dict' as keyword argument is deprecated",
DeprecationWarning, stacklevel=2)
else:
dict = None
self.data = {}
if dict is not None:
self.update(dict)
if len(kwargs):
self.update(kwargs)
def __len__(self): return len(self.data)
def __getitem__(self, key):
if key in self.data:
return self.data[key]
if hasattr(self.__class__, "__missing__"):
return self.__class__.__missing__(self, key)
raise KeyError(key)
def __setitem__(self, key, item): self.data[key] = item
def __delitem__(self, key): del self.data[key]
def __iter__(self):
return iter(self.data)
# Modify __contains__ to work correctly when __missing__ is present
def __contains__(self, key):
return key in self.data
# Now, add the methods in dicts but not in MutableMapping
def __repr__(self): return repr(self.data)
def copy(self):
if self.__class__ is UserDict:
return UserDict(self.data.copy())
import copy
data = self.data
try:
self.data = {}
c = copy.copy(self)
finally:
self.data = data
c.update(self)
return c
@classmethod
def fromkeys(cls, iterable, value=None):
d = cls()
for key in iterable:
d[key] = value
return d
################################################################################
### UserList
################################################################################
class UserList(MutableSequence):
"""A more or less complete user-defined wrapper around list objects."""
def __init__(self, initlist=None):
self.data = []
if initlist is not None:
# XXX should this accept an arbitrary sequence?
if type(initlist) == type(self.data):
self.data[:] = initlist
elif isinstance(initlist, UserList):
self.data[:] = initlist.data[:]
else:
self.data = list(initlist)
def __repr__(self): return repr(self.data)
def __lt__(self, other): return self.data < self.__cast(other)
def __le__(self, other): return self.data <= self.__cast(other)
def __eq__(self, other): return self.data == self.__cast(other)
def __gt__(self, other): return self.data > self.__cast(other)
def __ge__(self, other): return self.data >= self.__cast(other)
def __cast(self, other):
return other.data if isinstance(other, UserList) else other
def __contains__(self, item): return item in self.data
def __len__(self): return len(self.data)
def __getitem__(self, i): return self.data[i]
def __setitem__(self, i, item): self.data[i] = item
def __delitem__(self, i): del self.data[i]
def __add__(self, other):
if isinstance(other, UserList):
return self.__class__(self.data + other.data)
elif isinstance(other, type(self.data)):
return self.__class__(self.data + other)
return self.__class__(self.data + list(other))
def __radd__(self, other):
if isinstance(other, UserList):
return self.__class__(other.data + self.data)
elif isinstance(other, type(self.data)):
return self.__class__(other + self.data)
return self.__class__(list(other) + self.data)
def __iadd__(self, other):
if isinstance(other, UserList):
self.data += other.data
elif isinstance(other, type(self.data)):
self.data += other
else:
self.data += list(other)
return self
def __mul__(self, n):
return self.__class__(self.data*n)
__rmul__ = __mul__
def __imul__(self, n):
self.data *= n
return self
def append(self, item): self.data.append(item)
def insert(self, i, item): self.data.insert(i, item)
def pop(self, i=-1): return self.data.pop(i)
def remove(self, item): self.data.remove(item)
def clear(self): self.data.clear()
def copy(self): return self.__class__(self)
def count(self, item): return self.data.count(item)
def index(self, item, *args): return self.data.index(item, *args)
def reverse(self): self.data.reverse()
def sort(self, *args, **kwds): self.data.sort(*args, **kwds)
def extend(self, other):
if isinstance(other, UserList):
self.data.extend(other.data)
else:
self.data.extend(other)
################################################################################
### UserString
################################################################################
class UserString(Sequence):
def __init__(self, seq):
if isinstance(seq, str):
self.data = seq
elif isinstance(seq, UserString):
self.data = seq.data[:]
else:
self.data = str(seq)
def __str__(self): return str(self.data)
def __repr__(self): return repr(self.data)
def __int__(self): return int(self.data)
def __float__(self): return float(self.data)
def __complex__(self): return complex(self.data)
def __hash__(self): return hash(self.data)
def __getnewargs__(self):
return (self.data[:],)
def __eq__(self, string):
if isinstance(string, UserString):
return self.data == string.data
return self.data == string
def __lt__(self, string):
if isinstance(string, UserString):
return self.data < string.data
return self.data < string
def __le__(self, string):
if isinstance(string, UserString):
return self.data <= string.data
return self.data <= string
def __gt__(self, string):
if isinstance(string, UserString):
return self.data > string.data
return self.data > string
def __ge__(self, string):
if isinstance(string, UserString):
return self.data >= string.data
return self.data >= string
def __contains__(self, char):
if isinstance(char, UserString):
char = char.data
return char in self.data
def __len__(self): return len(self.data)
def __getitem__(self, index): return self.__class__(self.data[index])
def __add__(self, other):
if isinstance(other, UserString):
return self.__class__(self.data + other.data)
elif isinstance(other, str):
return self.__class__(self.data + other)
return self.__class__(self.data + str(other))
def __radd__(self, other):
if isinstance(other, str):
return self.__class__(other + self.data)
return self.__class__(str(other) + self.data)
def __mul__(self, n):
return self.__class__(self.data*n)
__rmul__ = __mul__
def __mod__(self, args):
return self.__class__(self.data % args)
def __rmod__(self, format):
return self.__class__(format % args)
# the following methods are defined in alphabetical order:
def capitalize(self): return self.__class__(self.data.capitalize())
def casefold(self):
return self.__class__(self.data.casefold())
def center(self, width, *args):
return self.__class__(self.data.center(width, *args))
def count(self, sub, start=0, end=_sys.maxsize):
if isinstance(sub, UserString):
sub = sub.data
return self.data.count(sub, start, end)
def encode(self, encoding=None, errors=None): # XXX improve this?
if encoding:
if errors:
return self.__class__(self.data.encode(encoding, errors))
return self.__class__(self.data.encode(encoding))
return self.__class__(self.data.encode())
def endswith(self, suffix, start=0, end=_sys.maxsize):
return self.data.endswith(suffix, start, end)
def expandtabs(self, tabsize=8):
return self.__class__(self.data.expandtabs(tabsize))
def find(self, sub, start=0, end=_sys.maxsize):
if isinstance(sub, UserString):
sub = sub.data
return self.data.find(sub, start, end)
def format(self, *args, **kwds):
return self.data.format(*args, **kwds)
def format_map(self, mapping):
return self.data.format_map(mapping)
def index(self, sub, start=0, end=_sys.maxsize):
return self.data.index(sub, start, end)
def isalpha(self): return self.data.isalpha()
def isalnum(self): return self.data.isalnum()
def isdecimal(self): return self.data.isdecimal()
def isdigit(self): return self.data.isdigit()
def isidentifier(self): return self.data.isidentifier()
def islower(self): return self.data.islower()
def isnumeric(self): return self.data.isnumeric()
def isprintable(self): return self.data.isprintable()
def isspace(self): return self.data.isspace()
def istitle(self): return self.data.istitle()
def isupper(self): return self.data.isupper()
def join(self, seq): return self.data.join(seq)
def ljust(self, width, *args):
return self.__class__(self.data.ljust(width, *args))
def lower(self): return self.__class__(self.data.lower())
def lstrip(self, chars=None): return self.__class__(self.data.lstrip(chars))
maketrans = str.maketrans
def partition(self, sep):
return self.data.partition(sep)
def replace(self, old, new, maxsplit=-1):
if isinstance(old, UserString):
old = old.data
if isinstance(new, UserString):
new = new.data
return self.__class__(self.data.replace(old, new, maxsplit))
def rfind(self, sub, start=0, end=_sys.maxsize):
if isinstance(sub, UserString):
sub = sub.data
return self.data.rfind(sub, start, end)
def rindex(self, sub, start=0, end=_sys.maxsize):
return self.data.rindex(sub, start, end)
def rjust(self, width, *args):
return self.__class__(self.data.rjust(width, *args))
def rpartition(self, sep):
return self.data.rpartition(sep)
def rstrip(self, chars=None):
return self.__class__(self.data.rstrip(chars))
def split(self, sep=None, maxsplit=-1):
return self.data.split(sep, maxsplit)
def rsplit(self, sep=None, maxsplit=-1):
return self.data.rsplit(sep, maxsplit)
def splitlines(self, keepends=False): return self.data.splitlines(keepends)
def startswith(self, prefix, start=0, end=_sys.maxsize):
return self.data.startswith(prefix, start, end)
def strip(self, chars=None): return self.__class__(self.data.strip(chars))
def swapcase(self): return self.__class__(self.data.swapcase())
def title(self): return self.__class__(self.data.title())
def translate(self, *args):
return self.__class__(self.data.translate(*args))
def upper(self): return self.__class__(self.data.upper())
def zfill(self, width): return self.__class__(self.data.zfill(width))
if __name__ == 'PYOBJ.COM':
import _collections
| 45,980 | 1,251 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/concurrent/__init__.py | # This directory is a Python package.
| 38 | 2 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/concurrent/futures/_base.py | # Copyright 2009 Brian Quinlan. All Rights Reserved.
# Licensed to PSF under a Contributor Agreement.
__author__ = 'Brian Quinlan ([email protected])'
import collections
import logging
import threading
import time
FIRST_COMPLETED = 'FIRST_COMPLETED'
FIRST_EXCEPTION = 'FIRST_EXCEPTION'
ALL_COMPLETED = 'ALL_COMPLETED'
_AS_COMPLETED = '_AS_COMPLETED'
# Possible future states (for internal use by the futures package).
PENDING = 'PENDING'
RUNNING = 'RUNNING'
# The future was cancelled by the user...
CANCELLED = 'CANCELLED'
# ...and _Waiter.add_cancelled() was called by a worker.
CANCELLED_AND_NOTIFIED = 'CANCELLED_AND_NOTIFIED'
FINISHED = 'FINISHED'
_FUTURE_STATES = [
PENDING,
RUNNING,
CANCELLED,
CANCELLED_AND_NOTIFIED,
FINISHED
]
_STATE_TO_DESCRIPTION_MAP = {
PENDING: "pending",
RUNNING: "running",
CANCELLED: "cancelled",
CANCELLED_AND_NOTIFIED: "cancelled",
FINISHED: "finished"
}
# Logger for internal use by the futures package.
LOGGER = logging.getLogger("concurrent.futures")
class Error(Exception):
"""Base class for all future-related exceptions."""
pass
class CancelledError(Error):
"""The Future was cancelled."""
pass
class TimeoutError(Error):
"""The operation exceeded the given deadline."""
pass
class _Waiter(object):
"""Provides the event that wait() and as_completed() block on."""
def __init__(self):
self.event = threading.Event()
self.finished_futures = []
def add_result(self, future):
self.finished_futures.append(future)
def add_exception(self, future):
self.finished_futures.append(future)
def add_cancelled(self, future):
self.finished_futures.append(future)
class _AsCompletedWaiter(_Waiter):
"""Used by as_completed()."""
def __init__(self):
super(_AsCompletedWaiter, self).__init__()
self.lock = threading.Lock()
def add_result(self, future):
with self.lock:
super(_AsCompletedWaiter, self).add_result(future)
self.event.set()
def add_exception(self, future):
with self.lock:
super(_AsCompletedWaiter, self).add_exception(future)
self.event.set()
def add_cancelled(self, future):
with self.lock:
super(_AsCompletedWaiter, self).add_cancelled(future)
self.event.set()
class _FirstCompletedWaiter(_Waiter):
"""Used by wait(return_when=FIRST_COMPLETED)."""
def add_result(self, future):
super().add_result(future)
self.event.set()
def add_exception(self, future):
super().add_exception(future)
self.event.set()
def add_cancelled(self, future):
super().add_cancelled(future)
self.event.set()
class _AllCompletedWaiter(_Waiter):
"""Used by wait(return_when=FIRST_EXCEPTION and ALL_COMPLETED)."""
def __init__(self, num_pending_calls, stop_on_exception):
self.num_pending_calls = num_pending_calls
self.stop_on_exception = stop_on_exception
self.lock = threading.Lock()
super().__init__()
def _decrement_pending_calls(self):
with self.lock:
self.num_pending_calls -= 1
if not self.num_pending_calls:
self.event.set()
def add_result(self, future):
super().add_result(future)
self._decrement_pending_calls()
def add_exception(self, future):
super().add_exception(future)
if self.stop_on_exception:
self.event.set()
else:
self._decrement_pending_calls()
def add_cancelled(self, future):
super().add_cancelled(future)
self._decrement_pending_calls()
class _AcquireFutures(object):
"""A context manager that does an ordered acquire of Future conditions."""
def __init__(self, futures):
self.futures = sorted(futures, key=id)
def __enter__(self):
for future in self.futures:
future._condition.acquire()
def __exit__(self, *args):
for future in self.futures:
future._condition.release()
def _create_and_install_waiters(fs, return_when):
if return_when == _AS_COMPLETED:
waiter = _AsCompletedWaiter()
elif return_when == FIRST_COMPLETED:
waiter = _FirstCompletedWaiter()
else:
pending_count = sum(
f._state not in [CANCELLED_AND_NOTIFIED, FINISHED] for f in fs)
if return_when == FIRST_EXCEPTION:
waiter = _AllCompletedWaiter(pending_count, stop_on_exception=True)
elif return_when == ALL_COMPLETED:
waiter = _AllCompletedWaiter(pending_count, stop_on_exception=False)
else:
raise ValueError("Invalid return condition: %r" % return_when)
for f in fs:
f._waiters.append(waiter)
return waiter
def _yield_finished_futures(fs, waiter, ref_collect):
"""
Iterate on the list *fs*, yielding finished futures one by one in
reverse order.
Before yielding a future, *waiter* is removed from its waiters
and the future is removed from each set in the collection of sets
*ref_collect*.
The aim of this function is to avoid keeping stale references after
the future is yielded and before the iterator resumes.
"""
while fs:
f = fs[-1]
for futures_set in ref_collect:
futures_set.remove(f)
with f._condition:
f._waiters.remove(waiter)
del f
# Careful not to keep a reference to the popped value
yield fs.pop()
def as_completed(fs, timeout=None):
"""An iterator over the given futures that yields each as it completes.
Args:
fs: The sequence of Futures (possibly created by different Executors) to
iterate over.
timeout: The maximum number of seconds to wait. If None, then there
is no limit on the wait time.
Returns:
An iterator that yields the given Futures as they complete (finished or
cancelled). If any given Futures are duplicated, they will be returned
once.
Raises:
TimeoutError: If the entire result iterator could not be generated
before the given timeout.
"""
if timeout is not None:
end_time = timeout + time.monotonic()
fs = set(fs)
total_futures = len(fs)
with _AcquireFutures(fs):
finished = set(
f for f in fs
if f._state in [CANCELLED_AND_NOTIFIED, FINISHED])
pending = fs - finished
waiter = _create_and_install_waiters(fs, _AS_COMPLETED)
finished = list(finished)
try:
yield from _yield_finished_futures(finished, waiter,
ref_collect=(fs,))
while pending:
if timeout is None:
wait_timeout = None
else:
wait_timeout = end_time - time.monotonic()
if wait_timeout < 0:
raise TimeoutError(
'%d (of %d) futures unfinished' % (
len(pending), total_futures))
waiter.event.wait(wait_timeout)
with waiter.lock:
finished = waiter.finished_futures
waiter.finished_futures = []
waiter.event.clear()
# reverse to keep finishing order
finished.reverse()
yield from _yield_finished_futures(finished, waiter,
ref_collect=(fs, pending))
finally:
# Remove waiter from unfinished futures
for f in fs:
with f._condition:
f._waiters.remove(waiter)
DoneAndNotDoneFutures = collections.namedtuple(
'DoneAndNotDoneFutures', 'done not_done')
def wait(fs, timeout=None, return_when=ALL_COMPLETED):
"""Wait for the futures in the given sequence to complete.
Args:
fs: The sequence of Futures (possibly created by different Executors) to
wait upon.
timeout: The maximum number of seconds to wait. If None, then there
is no limit on the wait time.
return_when: Indicates when this function should return. The options
are:
FIRST_COMPLETED - Return when any future finishes or is
cancelled.
FIRST_EXCEPTION - Return when any future finishes by raising an
exception. If no future raises an exception
then it is equivalent to ALL_COMPLETED.
ALL_COMPLETED - Return when all futures finish or are cancelled.
Returns:
A named 2-tuple of sets. The first set, named 'done', contains the
futures that completed (is finished or cancelled) before the wait
completed. The second set, named 'not_done', contains uncompleted
futures.
"""
with _AcquireFutures(fs):
done = set(f for f in fs
if f._state in [CANCELLED_AND_NOTIFIED, FINISHED])
not_done = set(fs) - done
if (return_when == FIRST_COMPLETED) and done:
return DoneAndNotDoneFutures(done, not_done)
elif (return_when == FIRST_EXCEPTION) and done:
if any(f for f in done
if not f.cancelled() and f.exception() is not None):
return DoneAndNotDoneFutures(done, not_done)
if len(done) == len(fs):
return DoneAndNotDoneFutures(done, not_done)
waiter = _create_and_install_waiters(fs, return_when)
waiter.event.wait(timeout)
for f in fs:
with f._condition:
f._waiters.remove(waiter)
done.update(waiter.finished_futures)
return DoneAndNotDoneFutures(done, set(fs) - done)
class Future(object):
"""Represents the result of an asynchronous computation."""
def __init__(self):
"""Initializes the future. Should not be called by clients."""
self._condition = threading.Condition()
self._state = PENDING
self._result = None
self._exception = None
self._waiters = []
self._done_callbacks = []
def _invoke_callbacks(self):
for callback in self._done_callbacks:
try:
callback(self)
except Exception:
LOGGER.exception('exception calling callback for %r', self)
def __repr__(self):
with self._condition:
if self._state == FINISHED:
if self._exception:
return '<%s at %#x state=%s raised %s>' % (
self.__class__.__name__,
id(self),
_STATE_TO_DESCRIPTION_MAP[self._state],
self._exception.__class__.__name__)
else:
return '<%s at %#x state=%s returned %s>' % (
self.__class__.__name__,
id(self),
_STATE_TO_DESCRIPTION_MAP[self._state],
self._result.__class__.__name__)
return '<%s at %#x state=%s>' % (
self.__class__.__name__,
id(self),
_STATE_TO_DESCRIPTION_MAP[self._state])
def cancel(self):
"""Cancel the future if possible.
Returns True if the future was cancelled, False otherwise. A future
cannot be cancelled if it is running or has already completed.
"""
with self._condition:
if self._state in [RUNNING, FINISHED]:
return False
if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]:
return True
self._state = CANCELLED
self._condition.notify_all()
self._invoke_callbacks()
return True
def cancelled(self):
"""Return True if the future was cancelled."""
with self._condition:
return self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]
def running(self):
"""Return True if the future is currently executing."""
with self._condition:
return self._state == RUNNING
def done(self):
"""Return True of the future was cancelled or finished executing."""
with self._condition:
return self._state in [CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED]
def __get_result(self):
if self._exception:
raise self._exception
else:
return self._result
def add_done_callback(self, fn):
"""Attaches a callable that will be called when the future finishes.
Args:
fn: A callable that will be called with this future as its only
argument when the future completes or is cancelled. The callable
will always be called by a thread in the same process in which
it was added. If the future has already completed or been
cancelled then the callable will be called immediately. These
callables are called in the order that they were added.
"""
with self._condition:
if self._state not in [CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED]:
self._done_callbacks.append(fn)
return
fn(self)
def result(self, timeout=None):
"""Return the result of the call that the future represents.
Args:
timeout: The number of seconds to wait for the result if the future
isn't done. If None, then there is no limit on the wait time.
Returns:
The result of the call that the future represents.
Raises:
CancelledError: If the future was cancelled.
TimeoutError: If the future didn't finish executing before the given
timeout.
Exception: If the call raised then that exception will be raised.
"""
with self._condition:
if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]:
raise CancelledError()
elif self._state == FINISHED:
return self.__get_result()
self._condition.wait(timeout)
if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]:
raise CancelledError()
elif self._state == FINISHED:
return self.__get_result()
else:
raise TimeoutError()
def exception(self, timeout=None):
"""Return the exception raised by the call that the future represents.
Args:
timeout: The number of seconds to wait for the exception if the
future isn't done. If None, then there is no limit on the wait
time.
Returns:
The exception raised by the call that the future represents or None
if the call completed without raising.
Raises:
CancelledError: If the future was cancelled.
TimeoutError: If the future didn't finish executing before the given
timeout.
"""
with self._condition:
if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]:
raise CancelledError()
elif self._state == FINISHED:
return self._exception
self._condition.wait(timeout)
if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]:
raise CancelledError()
elif self._state == FINISHED:
return self._exception
else:
raise TimeoutError()
# The following methods should only be used by Executors and in tests.
def set_running_or_notify_cancel(self):
"""Mark the future as running or process any cancel notifications.
Should only be used by Executor implementations and unit tests.
If the future has been cancelled (cancel() was called and returned
True) then any threads waiting on the future completing (though calls
to as_completed() or wait()) are notified and False is returned.
If the future was not cancelled then it is put in the running state
(future calls to running() will return True) and True is returned.
This method should be called by Executor implementations before
executing the work associated with this future. If this method returns
False then the work should not be executed.
Returns:
False if the Future was cancelled, True otherwise.
Raises:
RuntimeError: if this method was already called or if set_result()
or set_exception() was called.
"""
with self._condition:
if self._state == CANCELLED:
self._state = CANCELLED_AND_NOTIFIED
for waiter in self._waiters:
waiter.add_cancelled(self)
# self._condition.notify_all() is not necessary because
# self.cancel() triggers a notification.
return False
elif self._state == PENDING:
self._state = RUNNING
return True
else:
LOGGER.critical('Future %s in unexpected state: %s',
id(self),
self._state)
raise RuntimeError('Future in unexpected state')
def set_result(self, result):
"""Sets the return value of work associated with the future.
Should only be used by Executor implementations and unit tests.
"""
with self._condition:
self._result = result
self._state = FINISHED
for waiter in self._waiters:
waiter.add_result(self)
self._condition.notify_all()
self._invoke_callbacks()
def set_exception(self, exception):
"""Sets the result of the future as being the given exception.
Should only be used by Executor implementations and unit tests.
"""
with self._condition:
self._exception = exception
self._state = FINISHED
for waiter in self._waiters:
waiter.add_exception(self)
self._condition.notify_all()
self._invoke_callbacks()
class Executor(object):
"""This is an abstract base class for concrete asynchronous executors."""
def submit(self, fn, *args, **kwargs):
"""Submits a callable to be executed with the given arguments.
Schedules the callable to be executed as fn(*args, **kwargs) and returns
a Future instance representing the execution of the callable.
Returns:
A Future representing the given call.
"""
raise NotImplementedError()
def map(self, fn, *iterables, timeout=None, chunksize=1):
"""Returns an iterator equivalent to map(fn, iter).
Args:
fn: A callable that will take as many arguments as there are
passed iterables.
timeout: The maximum number of seconds to wait. If None, then there
is no limit on the wait time.
chunksize: The size of the chunks the iterable will be broken into
before being passed to a child process. This argument is only
used by ProcessPoolExecutor; it is ignored by
ThreadPoolExecutor.
Returns:
An iterator equivalent to: map(func, *iterables) but the calls may
be evaluated out-of-order.
Raises:
TimeoutError: If the entire result iterator could not be generated
before the given timeout.
Exception: If fn(*args) raises for any values.
"""
if timeout is not None:
end_time = timeout + time.monotonic()
fs = [self.submit(fn, *args) for args in zip(*iterables)]
# Yield must be hidden in closure so that the futures are submitted
# before the first iterator value is required.
def result_iterator():
try:
# reverse to keep finishing order
fs.reverse()
while fs:
# Careful not to keep a reference to the popped future
if timeout is None:
yield fs.pop().result()
else:
yield fs.pop().result(end_time - time.monotonic())
finally:
for future in fs:
future.cancel()
return result_iterator()
def shutdown(self, wait=True):
"""Clean-up the resources associated with the Executor.
It is safe to call this method several times. Otherwise, no other
methods can be called after this one.
Args:
wait: If True then shutdown will not return until all running
futures have finished executing and the resources used by the
executor have been reclaimed.
"""
pass
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
self.shutdown(wait=True)
return False
| 21,235 | 613 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/concurrent/futures/thread.py | # Copyright 2009 Brian Quinlan. All Rights Reserved.
# Licensed to PSF under a Contributor Agreement.
"""Implements ThreadPoolExecutor."""
__author__ = 'Brian Quinlan ([email protected])'
import atexit
from concurrent.futures import _base
import itertools
import queue
import threading
import weakref
import os
# Workers are created as daemon threads. This is done to allow the interpreter
# to exit when there are still idle threads in a ThreadPoolExecutor's thread
# pool (i.e. shutdown() was not called). However, allowing workers to die with
# the interpreter has two undesirable properties:
# - The workers would still be running during interpreter shutdown,
# meaning that they would fail in unpredictable ways.
# - The workers could be killed while evaluating a work item, which could
# be bad if the callable being evaluated has external side-effects e.g.
# writing to a file.
#
# To work around this problem, an exit handler is installed which tells the
# workers to exit when their work queues are empty and then waits until the
# threads finish.
_threads_queues = weakref.WeakKeyDictionary()
_shutdown = False
def _python_exit():
global _shutdown
_shutdown = True
items = list(_threads_queues.items())
for t, q in items:
q.put(None)
for t, q in items:
t.join()
atexit.register(_python_exit)
class _WorkItem(object):
def __init__(self, future, fn, args, kwargs):
self.future = future
self.fn = fn
self.args = args
self.kwargs = kwargs
def run(self):
if not self.future.set_running_or_notify_cancel():
return
try:
result = self.fn(*self.args, **self.kwargs)
except BaseException as exc:
self.future.set_exception(exc)
# Break a reference cycle with the exception 'exc'
self = None
else:
self.future.set_result(result)
def _worker(executor_reference, work_queue):
try:
while True:
work_item = work_queue.get(block=True)
if work_item is not None:
work_item.run()
# Delete references to object. See issue16284
del work_item
continue
executor = executor_reference()
# Exit if:
# - The interpreter is shutting down OR
# - The executor that owns the worker has been collected OR
# - The executor that owns the worker has been shutdown.
if _shutdown or executor is None or executor._shutdown:
# Notice other workers
work_queue.put(None)
return
del executor
except BaseException:
_base.LOGGER.critical('Exception in worker', exc_info=True)
class ThreadPoolExecutor(_base.Executor):
# Used to assign unique thread names when thread_name_prefix is not supplied.
_counter = itertools.count().__next__
def __init__(self, max_workers=None, thread_name_prefix=''):
"""Initializes a new ThreadPoolExecutor instance.
Args:
max_workers: The maximum number of threads that can be used to
execute the given calls.
thread_name_prefix: An optional name prefix to give our threads.
"""
if max_workers is None:
# Use this number because ThreadPoolExecutor is often
# used to overlap I/O instead of CPU work.
max_workers = (os.cpu_count() or 1) * 5
if max_workers <= 0:
raise ValueError("max_workers must be greater than 0")
self._max_workers = max_workers
self._work_queue = queue.Queue()
self._threads = set()
self._shutdown = False
self._shutdown_lock = threading.Lock()
self._thread_name_prefix = (thread_name_prefix or
("ThreadPoolExecutor-%d" % self._counter()))
def submit(self, fn, *args, **kwargs):
with self._shutdown_lock:
if self._shutdown:
raise RuntimeError('cannot schedule new futures after shutdown')
f = _base.Future()
w = _WorkItem(f, fn, args, kwargs)
self._work_queue.put(w)
self._adjust_thread_count()
return f
submit.__doc__ = _base.Executor.submit.__doc__
def _adjust_thread_count(self):
# When the executor gets lost, the weakref callback will wake up
# the worker threads.
def weakref_cb(_, q=self._work_queue):
q.put(None)
# TODO(bquinlan): Should avoid creating new threads if there are more
# idle threads than items in the work queue.
num_threads = len(self._threads)
if num_threads < self._max_workers:
thread_name = '%s_%d' % (self._thread_name_prefix or self,
num_threads)
t = threading.Thread(name=thread_name, target=_worker,
args=(weakref.ref(self, weakref_cb),
self._work_queue))
t.daemon = True
t.start()
self._threads.add(t)
_threads_queues[t] = self._work_queue
def shutdown(self, wait=True):
with self._shutdown_lock:
self._shutdown = True
self._work_queue.put(None)
if wait:
for t in self._threads:
t.join()
shutdown.__doc__ = _base.Executor.shutdown.__doc__
| 5,511 | 154 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/concurrent/futures/process.py | # Copyright 2009 Brian Quinlan. All Rights Reserved.
# Licensed to PSF under a Contributor Agreement.
"""Implements ProcessPoolExecutor.
The follow diagram and text describe the data-flow through the system:
|======================= In-process =====================|== Out-of-process ==|
+----------+ +----------+ +--------+ +-----------+ +---------+
| | => | Work Ids | => | | => | Call Q | => | |
| | +----------+ | | +-----------+ | |
| | | ... | | | | ... | | |
| | | 6 | | | | 5, call() | | |
| | | 7 | | | | ... | | |
| Process | | ... | | Local | +-----------+ | Process |
| Pool | +----------+ | Worker | | #1..n |
| Executor | | Thread | | |
| | +----------- + | | +-----------+ | |
| | <=> | Work Items | <=> | | <= | Result Q | <= | |
| | +------------+ | | +-----------+ | |
| | | 6: call() | | | | ... | | |
| | | future | | | | 4, result | | |
| | | ... | | | | 3, except | | |
+----------+ +------------+ +--------+ +-----------+ +---------+
Executor.submit() called:
- creates a uniquely numbered _WorkItem and adds it to the "Work Items" dict
- adds the id of the _WorkItem to the "Work Ids" queue
Local worker thread:
- reads work ids from the "Work Ids" queue and looks up the corresponding
WorkItem from the "Work Items" dict: if the work item has been cancelled then
it is simply removed from the dict, otherwise it is repackaged as a
_CallItem and put in the "Call Q". New _CallItems are put in the "Call Q"
until "Call Q" is full. NOTE: the size of the "Call Q" is kept small because
calls placed in the "Call Q" can no longer be cancelled with Future.cancel().
- reads _ResultItems from "Result Q", updates the future stored in the
"Work Items" dict and deletes the dict entry
Process #1..n:
- reads _CallItems from "Call Q", executes the calls, and puts the resulting
_ResultItems in "Result Q"
"""
__author__ = 'Brian Quinlan ([email protected])'
import atexit
import os
from concurrent.futures import _base
import queue
from queue import Full
import multiprocessing
from multiprocessing import SimpleQueue
from multiprocessing.connection import wait
import threading
import weakref
from functools import partial
import itertools
import traceback
# Workers are created as daemon threads and processes. This is done to allow the
# interpreter to exit when there are still idle processes in a
# ProcessPoolExecutor's process pool (i.e. shutdown() was not called). However,
# allowing workers to die with the interpreter has two undesirable properties:
# - The workers would still be running during interpreter shutdown,
# meaning that they would fail in unpredictable ways.
# - The workers could be killed while evaluating a work item, which could
# be bad if the callable being evaluated has external side-effects e.g.
# writing to a file.
#
# To work around this problem, an exit handler is installed which tells the
# workers to exit when their work queues are empty and then waits until the
# threads/processes finish.
_threads_queues = weakref.WeakKeyDictionary()
_shutdown = False
def _python_exit():
global _shutdown
_shutdown = True
items = list(_threads_queues.items())
for t, q in items:
q.put(None)
for t, q in items:
t.join()
# Controls how many more calls than processes will be queued in the call queue.
# A smaller number will mean that processes spend more time idle waiting for
# work while a larger number will make Future.cancel() succeed less frequently
# (Futures in the call queue cannot be cancelled).
EXTRA_QUEUED_CALLS = 1
# Hack to embed stringification of remote traceback in local traceback
class _RemoteTraceback(Exception):
def __init__(self, tb):
self.tb = tb
def __str__(self):
return self.tb
class _ExceptionWithTraceback:
def __init__(self, exc, tb):
tb = traceback.format_exception(type(exc), exc, tb)
tb = ''.join(tb)
self.exc = exc
self.tb = '\n"""\n%s"""' % tb
def __reduce__(self):
return _rebuild_exc, (self.exc, self.tb)
def _rebuild_exc(exc, tb):
exc.__cause__ = _RemoteTraceback(tb)
return exc
class _WorkItem(object):
def __init__(self, future, fn, args, kwargs):
self.future = future
self.fn = fn
self.args = args
self.kwargs = kwargs
class _ResultItem(object):
def __init__(self, work_id, exception=None, result=None):
self.work_id = work_id
self.exception = exception
self.result = result
class _CallItem(object):
def __init__(self, work_id, fn, args, kwargs):
self.work_id = work_id
self.fn = fn
self.args = args
self.kwargs = kwargs
def _get_chunks(*iterables, chunksize):
""" Iterates over zip()ed iterables in chunks. """
it = zip(*iterables)
while True:
chunk = tuple(itertools.islice(it, chunksize))
if not chunk:
return
yield chunk
def _process_chunk(fn, chunk):
""" Processes a chunk of an iterable passed to map.
Runs the function passed to map() on a chunk of the
iterable passed to map.
This function is run in a separate process.
"""
return [fn(*args) for args in chunk]
def _process_worker(call_queue, result_queue):
"""Evaluates calls from call_queue and places the results in result_queue.
This worker is run in a separate process.
Args:
call_queue: A multiprocessing.Queue of _CallItems that will be read and
evaluated by the worker.
result_queue: A multiprocessing.Queue of _ResultItems that will written
to by the worker.
shutdown: A multiprocessing.Event that will be set as a signal to the
worker that it should exit when call_queue is empty.
"""
while True:
call_item = call_queue.get(block=True)
if call_item is None:
# Wake up queue management thread
result_queue.put(os.getpid())
return
try:
r = call_item.fn(*call_item.args, **call_item.kwargs)
except BaseException as e:
exc = _ExceptionWithTraceback(e, e.__traceback__)
result_queue.put(_ResultItem(call_item.work_id, exception=exc))
else:
result_queue.put(_ResultItem(call_item.work_id,
result=r))
def _add_call_item_to_queue(pending_work_items,
work_ids,
call_queue):
"""Fills call_queue with _WorkItems from pending_work_items.
This function never blocks.
Args:
pending_work_items: A dict mapping work ids to _WorkItems e.g.
{5: <_WorkItem...>, 6: <_WorkItem...>, ...}
work_ids: A queue.Queue of work ids e.g. Queue([5, 6, ...]). Work ids
are consumed and the corresponding _WorkItems from
pending_work_items are transformed into _CallItems and put in
call_queue.
call_queue: A multiprocessing.Queue that will be filled with _CallItems
derived from _WorkItems.
"""
while True:
if call_queue.full():
return
try:
work_id = work_ids.get(block=False)
except queue.Empty:
return
else:
work_item = pending_work_items[work_id]
if work_item.future.set_running_or_notify_cancel():
call_queue.put(_CallItem(work_id,
work_item.fn,
work_item.args,
work_item.kwargs),
block=True)
else:
del pending_work_items[work_id]
continue
def _queue_management_worker(executor_reference,
processes,
pending_work_items,
work_ids_queue,
call_queue,
result_queue):
"""Manages the communication between this process and the worker processes.
This function is run in a local thread.
Args:
executor_reference: A weakref.ref to the ProcessPoolExecutor that owns
this thread. Used to determine if the ProcessPoolExecutor has been
garbage collected and that this function can exit.
process: A list of the multiprocessing.Process instances used as
workers.
pending_work_items: A dict mapping work ids to _WorkItems e.g.
{5: <_WorkItem...>, 6: <_WorkItem...>, ...}
work_ids_queue: A queue.Queue of work ids e.g. Queue([5, 6, ...]).
call_queue: A multiprocessing.Queue that will be filled with _CallItems
derived from _WorkItems for processing by the process workers.
result_queue: A multiprocessing.Queue of _ResultItems generated by the
process workers.
"""
executor = None
def shutting_down():
return _shutdown or executor is None or executor._shutdown_thread
def shutdown_worker():
# This is an upper bound
nb_children_alive = sum(p.is_alive() for p in processes.values())
for i in range(0, nb_children_alive):
call_queue.put_nowait(None)
# Release the queue's resources as soon as possible.
call_queue.close()
# If .join() is not called on the created processes then
# some multiprocessing.Queue methods may deadlock on Mac OS X.
for p in processes.values():
p.join()
reader = result_queue._reader
while True:
_add_call_item_to_queue(pending_work_items,
work_ids_queue,
call_queue)
sentinels = [p.sentinel for p in processes.values()]
assert sentinels
ready = wait([reader] + sentinels)
if reader in ready:
result_item = reader.recv()
else:
# Mark the process pool broken so that submits fail right now.
executor = executor_reference()
if executor is not None:
executor._broken = True
executor._shutdown_thread = True
executor = None
# All futures in flight must be marked failed
for work_id, work_item in pending_work_items.items():
work_item.future.set_exception(
BrokenProcessPool(
"A process in the process pool was "
"terminated abruptly while the future was "
"running or pending."
))
# Delete references to object. See issue16284
del work_item
pending_work_items.clear()
# Terminate remaining workers forcibly: the queues or their
# locks may be in a dirty state and block forever.
for p in processes.values():
p.terminate()
shutdown_worker()
return
if isinstance(result_item, int):
# Clean shutdown of a worker using its PID
# (avoids marking the executor broken)
assert shutting_down()
p = processes.pop(result_item)
p.join()
if not processes:
shutdown_worker()
return
elif result_item is not None:
work_item = pending_work_items.pop(result_item.work_id, None)
# work_item can be None if another process terminated (see above)
if work_item is not None:
if result_item.exception:
work_item.future.set_exception(result_item.exception)
else:
work_item.future.set_result(result_item.result)
# Delete references to object. See issue16284
del work_item
# Check whether we should start shutting down.
executor = executor_reference()
# No more work items can be added if:
# - The interpreter is shutting down OR
# - The executor that owns this worker has been collected OR
# - The executor that owns this worker has been shutdown.
if shutting_down():
try:
# Since no new work items can be added, it is safe to shutdown
# this thread if there are no pending work items.
if not pending_work_items:
shutdown_worker()
return
except Full:
# This is not a problem: we will eventually be woken up (in
# result_queue.get()) and be able to send a sentinel again.
pass
executor = None
_system_limits_checked = False
_system_limited = None
def _check_system_limits():
global _system_limits_checked, _system_limited
if _system_limits_checked:
if _system_limited:
raise NotImplementedError(_system_limited)
_system_limits_checked = True
try:
nsems_max = os.sysconf("SC_SEM_NSEMS_MAX")
except (AttributeError, ValueError):
# sysconf not available or setting not available
return
if nsems_max == -1:
# indetermined limit, assume that limit is determined
# by available memory only
return
if nsems_max >= 256:
# minimum number of semaphores available
# according to POSIX
return
_system_limited = "system provides too few semaphores (%d available, 256 necessary)" % nsems_max
raise NotImplementedError(_system_limited)
def _chain_from_iterable_of_lists(iterable):
"""
Specialized implementation of itertools.chain.from_iterable.
Each item in *iterable* should be a list. This function is
careful not to keep references to yielded objects.
"""
for element in iterable:
element.reverse()
while element:
yield element.pop()
class BrokenProcessPool(RuntimeError):
"""
Raised when a process in a ProcessPoolExecutor terminated abruptly
while a future was in the running state.
"""
class ProcessPoolExecutor(_base.Executor):
def __init__(self, max_workers=None):
"""Initializes a new ProcessPoolExecutor instance.
Args:
max_workers: The maximum number of processes that can be used to
execute the given calls. If None or not given then as many
worker processes will be created as the machine has processors.
"""
_check_system_limits()
if max_workers is None:
self._max_workers = os.cpu_count() or 1
else:
if max_workers <= 0:
raise ValueError("max_workers must be greater than 0")
self._max_workers = max_workers
# Make the call queue slightly larger than the number of processes to
# prevent the worker processes from idling. But don't make it too big
# because futures in the call queue cannot be cancelled.
self._call_queue = multiprocessing.Queue(self._max_workers +
EXTRA_QUEUED_CALLS)
# Killed worker processes can produce spurious "broken pipe"
# tracebacks in the queue's own worker thread. But we detect killed
# processes anyway, so silence the tracebacks.
self._call_queue._ignore_epipe = True
self._result_queue = SimpleQueue()
self._work_ids = queue.Queue()
self._queue_management_thread = None
# Map of pids to processes
self._processes = {}
# Shutdown is a two-step process.
self._shutdown_thread = False
self._shutdown_lock = threading.Lock()
self._broken = False
self._queue_count = 0
self._pending_work_items = {}
def _start_queue_management_thread(self):
# When the executor gets lost, the weakref callback will wake up
# the queue management thread.
def weakref_cb(_, q=self._result_queue):
q.put(None)
if self._queue_management_thread is None:
# Start the processes so that their sentinels are known.
self._adjust_process_count()
self._queue_management_thread = threading.Thread(
target=_queue_management_worker,
args=(weakref.ref(self, weakref_cb),
self._processes,
self._pending_work_items,
self._work_ids,
self._call_queue,
self._result_queue))
self._queue_management_thread.daemon = True
self._queue_management_thread.start()
_threads_queues[self._queue_management_thread] = self._result_queue
def _adjust_process_count(self):
for _ in range(len(self._processes), self._max_workers):
p = multiprocessing.Process(
target=_process_worker,
args=(self._call_queue,
self._result_queue))
p.start()
self._processes[p.pid] = p
def submit(self, fn, *args, **kwargs):
with self._shutdown_lock:
if self._broken:
raise BrokenProcessPool('A child process terminated '
'abruptly, the process pool is not usable anymore')
if self._shutdown_thread:
raise RuntimeError('cannot schedule new futures after shutdown')
f = _base.Future()
w = _WorkItem(f, fn, args, kwargs)
self._pending_work_items[self._queue_count] = w
self._work_ids.put(self._queue_count)
self._queue_count += 1
# Wake up queue management thread
self._result_queue.put(None)
self._start_queue_management_thread()
return f
submit.__doc__ = _base.Executor.submit.__doc__
def map(self, fn, *iterables, timeout=None, chunksize=1):
"""Returns an iterator equivalent to map(fn, iter).
Args:
fn: A callable that will take as many arguments as there are
passed iterables.
timeout: The maximum number of seconds to wait. If None, then there
is no limit on the wait time.
chunksize: If greater than one, the iterables will be chopped into
chunks of size chunksize and submitted to the process pool.
If set to one, the items in the list will be sent one at a time.
Returns:
An iterator equivalent to: map(func, *iterables) but the calls may
be evaluated out-of-order.
Raises:
TimeoutError: If the entire result iterator could not be generated
before the given timeout.
Exception: If fn(*args) raises for any values.
"""
if chunksize < 1:
raise ValueError("chunksize must be >= 1.")
results = super().map(partial(_process_chunk, fn),
_get_chunks(*iterables, chunksize=chunksize),
timeout=timeout)
return _chain_from_iterable_of_lists(results)
def shutdown(self, wait=True):
with self._shutdown_lock:
self._shutdown_thread = True
if self._queue_management_thread:
# Wake up queue management thread
self._result_queue.put(None)
if wait:
self._queue_management_thread.join()
# To reduce the risk of opening too many files, remove references to
# objects that use file descriptors.
self._queue_management_thread = None
self._call_queue = None
self._result_queue = None
self._processes = None
shutdown.__doc__ = _base.Executor.shutdown.__doc__
atexit.register(_python_exit)
| 20,492 | 516 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/concurrent/futures/__init__.py | # Copyright 2009 Brian Quinlan. All Rights Reserved.
# Licensed to PSF under a Contributor Agreement.
"""Execute computations asynchronously using threads or processes."""
__author__ = 'Brian Quinlan ([email protected])'
from concurrent.futures._base import (FIRST_COMPLETED,
FIRST_EXCEPTION,
ALL_COMPLETED,
CancelledError,
TimeoutError,
Future,
Executor,
wait,
as_completed)
from concurrent.futures.process import ProcessPoolExecutor
from concurrent.futures.thread import ThreadPoolExecutor
| 800 | 19 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/case.py | """Test case implementation"""
import sys
import functools
import difflib
import logging
import pprint
import re
import warnings
import collections
import contextlib
import traceback
from . import result
from .util import (strclass, safe_repr, _count_diff_all_purpose,
_count_diff_hashable, _common_shorten_repr)
__unittest = True
_subtest_msg_sentinel = object()
DIFF_OMITTED = ('\nDiff is %s characters long. '
'Set self.maxDiff to None to see it.')
class SkipTest(Exception):
"""
Raise this exception in a test to skip it.
Usually you can use TestCase.skipTest() or one of the skipping decorators
instead of raising this directly.
"""
class _ShouldStop(Exception):
"""
The test should stop.
"""
class _UnexpectedSuccess(Exception):
"""
The test was supposed to fail, but it didn't!
"""
class _Outcome(object):
def __init__(self, result=None):
self.expecting_failure = False
self.result = result
self.result_supports_subtests = hasattr(result, "addSubTest")
self.success = True
self.skipped = []
self.expectedFailure = None
self.errors = []
@contextlib.contextmanager
def testPartExecutor(self, test_case, isTest=False):
old_success = self.success
self.success = True
try:
yield
except KeyboardInterrupt:
raise
except SkipTest as e:
self.success = False
self.skipped.append((test_case, str(e)))
except _ShouldStop:
pass
except:
exc_info = sys.exc_info()
if self.expecting_failure:
self.expectedFailure = exc_info
else:
self.success = False
self.errors.append((test_case, exc_info))
# explicitly break a reference cycle:
# exc_info -> frame -> exc_info
exc_info = None
else:
if self.result_supports_subtests and self.success:
self.errors.append((test_case, None))
finally:
self.success = self.success and old_success
def _id(obj):
return obj
def skip(reason):
"""
Unconditionally skip a test.
"""
def decorator(test_item):
if not isinstance(test_item, type):
@functools.wraps(test_item)
def skip_wrapper(*args, **kwargs):
raise SkipTest(reason)
test_item = skip_wrapper
test_item.__unittest_skip__ = True
test_item.__unittest_skip_why__ = reason
return test_item
return decorator
def skipIf(condition, reason):
"""
Skip a test if the condition is true.
"""
if condition:
return skip(reason)
return _id
def skipUnless(condition, reason):
"""
Skip a test unless the condition is true.
"""
if not condition:
return skip(reason)
return _id
def expectedFailure(test_item):
test_item.__unittest_expecting_failure__ = True
return test_item
def _is_subtype(expected, basetype):
if isinstance(expected, tuple):
return all(_is_subtype(e, basetype) for e in expected)
return isinstance(expected, type) and issubclass(expected, basetype)
class _BaseTestCaseContext:
def __init__(self, test_case):
self.test_case = test_case
def _raiseFailure(self, standardMsg):
msg = self.test_case._formatMessage(self.msg, standardMsg)
raise self.test_case.failureException(msg)
class _AssertRaisesBaseContext(_BaseTestCaseContext):
def __init__(self, expected, test_case, expected_regex=None):
_BaseTestCaseContext.__init__(self, test_case)
self.expected = expected
self.test_case = test_case
if expected_regex is not None:
expected_regex = re.compile(expected_regex)
self.expected_regex = expected_regex
self.obj_name = None
self.msg = None
def handle(self, name, args, kwargs):
"""
If args is empty, assertRaises/Warns is being used as a
context manager, so check for a 'msg' kwarg and return self.
If args is not empty, call a callable passing positional and keyword
arguments.
"""
try:
if not _is_subtype(self.expected, self._base_type):
raise TypeError('%s() arg 1 must be %s' %
(name, self._base_type_str))
if args and args[0] is None:
warnings.warn("callable is None",
DeprecationWarning, 3)
args = ()
if not args:
self.msg = kwargs.pop('msg', None)
if kwargs:
warnings.warn('%r is an invalid keyword argument for '
'this function' % next(iter(kwargs)),
DeprecationWarning, 3)
return self
callable_obj, *args = args
try:
self.obj_name = callable_obj.__name__
except AttributeError:
self.obj_name = str(callable_obj)
with self:
callable_obj(*args, **kwargs)
finally:
# bpo-23890: manually break a reference cycle
self = None
class _AssertRaisesContext(_AssertRaisesBaseContext):
"""A context manager used to implement TestCase.assertRaises* methods."""
_base_type = BaseException
_base_type_str = 'an exception type or tuple of exception types'
def __enter__(self):
return self
def __exit__(self, exc_type, exc_value, tb):
if exc_type is None:
try:
exc_name = self.expected.__name__
except AttributeError:
exc_name = str(self.expected)
if self.obj_name:
self._raiseFailure("{} not raised by {}".format(exc_name,
self.obj_name))
else:
self._raiseFailure("{} not raised".format(exc_name))
else:
traceback.clear_frames(tb)
if not issubclass(exc_type, self.expected):
# let unexpected exceptions pass through
return False
# store exception, without traceback, for later retrieval
self.exception = exc_value.with_traceback(None)
if self.expected_regex is None:
return True
expected_regex = self.expected_regex
if not expected_regex.search(str(exc_value)):
self._raiseFailure('"{}" does not match "{}"'.format(
expected_regex.pattern, str(exc_value)))
return True
class _AssertWarnsContext(_AssertRaisesBaseContext):
"""A context manager used to implement TestCase.assertWarns* methods."""
_base_type = Warning
_base_type_str = 'a warning type or tuple of warning types'
def __enter__(self):
# The __warningregistry__'s need to be in a pristine state for tests
# to work properly.
for v in sys.modules.values():
if getattr(v, '__warningregistry__', None):
v.__warningregistry__ = {}
self.warnings_manager = warnings.catch_warnings(record=True)
self.warnings = self.warnings_manager.__enter__()
warnings.simplefilter("always", self.expected)
return self
def __exit__(self, exc_type, exc_value, tb):
self.warnings_manager.__exit__(exc_type, exc_value, tb)
if exc_type is not None:
# let unexpected exceptions pass through
return
try:
exc_name = self.expected.__name__
except AttributeError:
exc_name = str(self.expected)
first_matching = None
for m in self.warnings:
w = m.message
if not isinstance(w, self.expected):
continue
if first_matching is None:
first_matching = w
if (self.expected_regex is not None and
not self.expected_regex.search(str(w))):
continue
# store warning for later retrieval
self.warning = w
self.filename = m.filename
self.lineno = m.lineno
return
# Now we simply try to choose a helpful failure message
if first_matching is not None:
self._raiseFailure('"{}" does not match "{}"'.format(
self.expected_regex.pattern, str(first_matching)))
if self.obj_name:
self._raiseFailure("{} not triggered by {}".format(exc_name,
self.obj_name))
else:
self._raiseFailure("{} not triggered".format(exc_name))
_LoggingWatcher = collections.namedtuple("_LoggingWatcher",
["records", "output"])
class _CapturingHandler(logging.Handler):
"""
A logging handler capturing all (raw and formatted) logging output.
"""
def __init__(self):
logging.Handler.__init__(self)
self.watcher = _LoggingWatcher([], [])
def flush(self):
pass
def emit(self, record):
self.watcher.records.append(record)
msg = self.format(record)
self.watcher.output.append(msg)
class _AssertLogsContext(_BaseTestCaseContext):
"""A context manager used to implement TestCase.assertLogs()."""
LOGGING_FORMAT = "%(levelname)s:%(name)s:%(message)s"
def __init__(self, test_case, logger_name, level):
_BaseTestCaseContext.__init__(self, test_case)
self.logger_name = logger_name
if level:
self.level = logging._nameToLevel.get(level, level)
else:
self.level = logging.INFO
self.msg = None
def __enter__(self):
if isinstance(self.logger_name, logging.Logger):
logger = self.logger = self.logger_name
else:
logger = self.logger = logging.getLogger(self.logger_name)
formatter = logging.Formatter(self.LOGGING_FORMAT)
handler = _CapturingHandler()
handler.setFormatter(formatter)
self.watcher = handler.watcher
self.old_handlers = logger.handlers[:]
self.old_level = logger.level
self.old_propagate = logger.propagate
logger.handlers = [handler]
logger.setLevel(self.level)
logger.propagate = False
return handler.watcher
def __exit__(self, exc_type, exc_value, tb):
self.logger.handlers = self.old_handlers
self.logger.propagate = self.old_propagate
self.logger.setLevel(self.old_level)
if exc_type is not None:
# let unexpected exceptions pass through
return False
if len(self.watcher.records) == 0:
self._raiseFailure(
"no logs of level {} or higher triggered on {}"
.format(logging.getLevelName(self.level), self.logger.name))
class TestCase(object):
"""A class whose instances are single test cases.
By default, the test code itself should be placed in a method named
'runTest'.
If the fixture may be used for many test cases, create as
many test methods as are needed. When instantiating such a TestCase
subclass, specify in the constructor arguments the name of the test method
that the instance is to execute.
Test authors should subclass TestCase for their own tests. Construction
and deconstruction of the test's environment ('fixture') can be
implemented by overriding the 'setUp' and 'tearDown' methods respectively.
If it is necessary to override the __init__ method, the base class
__init__ method must always be called. It is important that subclasses
should not change the signature of their __init__ method, since instances
of the classes are instantiated automatically by parts of the framework
in order to be run.
When subclassing TestCase, you can set these attributes:
* failureException: determines which exception will be raised when
the instance's assertion methods fail; test methods raising this
exception will be deemed to have 'failed' rather than 'errored'.
* longMessage: determines whether long messages (including repr of
objects used in assert methods) will be printed on failure in *addition*
to any explicit message passed.
* maxDiff: sets the maximum length of a diff in failure messages
by assert methods using difflib. It is looked up as an instance
attribute so can be configured by individual tests if required.
"""
failureException = AssertionError
longMessage = True
maxDiff = 80*8
# If a string is longer than _diffThreshold, use normal comparison instead
# of difflib. See #11763.
_diffThreshold = 2**16
# Attribute used by TestSuite for classSetUp
_classSetupFailed = False
def __init__(self, methodName='runTest'):
"""Create an instance of the class that will use the named test
method when executed. Raises a ValueError if the instance does
not have a method with the specified name.
"""
self._testMethodName = methodName
self._outcome = None
self._testMethodDoc = 'No test'
try:
testMethod = getattr(self, methodName)
except AttributeError:
if methodName != 'runTest':
# we allow instantiation with no explicit method name
# but not an *incorrect* or missing method name
raise ValueError("no such test method in %s: %s" %
(self.__class__, methodName))
else:
self._testMethodDoc = testMethod.__doc__
self._cleanups = []
self._subtest = None
# Map types to custom assertEqual functions that will compare
# instances of said type in more detail to generate a more useful
# error message.
self._type_equality_funcs = {}
self.addTypeEqualityFunc(dict, 'assertDictEqual')
self.addTypeEqualityFunc(list, 'assertListEqual')
self.addTypeEqualityFunc(tuple, 'assertTupleEqual')
self.addTypeEqualityFunc(set, 'assertSetEqual')
self.addTypeEqualityFunc(frozenset, 'assertSetEqual')
self.addTypeEqualityFunc(str, 'assertMultiLineEqual')
def addTypeEqualityFunc(self, typeobj, function):
"""Add a type specific assertEqual style function to compare a type.
This method is for use by TestCase subclasses that need to register
their own type equality functions to provide nicer error messages.
Args:
typeobj: The data type to call this function on when both values
are of the same type in assertEqual().
function: The callable taking two arguments and an optional
msg= argument that raises self.failureException with a
useful error message when the two arguments are not equal.
"""
self._type_equality_funcs[typeobj] = function
def addCleanup(self, function, *args, **kwargs):
"""Add a function, with arguments, to be called when the test is
completed. Functions added are called on a LIFO basis and are
called after tearDown on test failure or success.
Cleanup items are called even if setUp fails (unlike tearDown)."""
self._cleanups.append((function, args, kwargs))
def setUp(self):
"Hook method for setting up the test fixture before exercising it."
pass
def tearDown(self):
"Hook method for deconstructing the test fixture after testing it."
pass
@classmethod
def setUpClass(cls):
"Hook method for setting up class fixture before running tests in the class."
@classmethod
def tearDownClass(cls):
"Hook method for deconstructing the class fixture after running all tests in the class."
def countTestCases(self):
return 1
def defaultTestResult(self):
return result.TestResult()
def shortDescription(self):
"""Returns a one-line description of the test, or None if no
description has been provided.
The default implementation of this method returns the first line of
the specified test method's docstring.
"""
doc = self._testMethodDoc
return doc and doc.split("\n")[0].strip() or None
def id(self):
return "%s.%s" % (strclass(self.__class__), self._testMethodName)
def __eq__(self, other):
if type(self) is not type(other):
return NotImplemented
return self._testMethodName == other._testMethodName
def __hash__(self):
return hash((type(self), self._testMethodName))
def __str__(self):
return "%s (%s)" % (self._testMethodName, strclass(self.__class__))
def __repr__(self):
return "<%s testMethod=%s>" % \
(strclass(self.__class__), self._testMethodName)
def _addSkip(self, result, test_case, reason):
addSkip = getattr(result, 'addSkip', None)
if addSkip is not None:
addSkip(test_case, reason)
else:
warnings.warn("TestResult has no addSkip method, skips not reported",
RuntimeWarning, 2)
result.addSuccess(test_case)
@contextlib.contextmanager
def subTest(self, msg=_subtest_msg_sentinel, **params):
"""Return a context manager that will return the enclosed block
of code in a subtest identified by the optional message and
keyword parameters. A failure in the subtest marks the test
case as failed but resumes execution at the end of the enclosed
block, allowing further test code to be executed.
"""
if self._outcome is None or not self._outcome.result_supports_subtests:
yield
return
parent = self._subtest
if parent is None:
params_map = collections.ChainMap(params)
else:
params_map = parent.params.new_child(params)
self._subtest = _SubTest(self, msg, params_map)
try:
with self._outcome.testPartExecutor(self._subtest, isTest=True):
yield
if not self._outcome.success:
result = self._outcome.result
if result is not None and result.failfast:
raise _ShouldStop
elif self._outcome.expectedFailure:
# If the test is expecting a failure, we really want to
# stop now and register the expected failure.
raise _ShouldStop
finally:
self._subtest = parent
def _feedErrorsToResult(self, result, errors):
for test, exc_info in errors:
if isinstance(test, _SubTest):
result.addSubTest(test.test_case, test, exc_info)
elif exc_info is not None:
if issubclass(exc_info[0], self.failureException):
result.addFailure(test, exc_info)
else:
result.addError(test, exc_info)
def _addExpectedFailure(self, result, exc_info):
try:
addExpectedFailure = result.addExpectedFailure
except AttributeError:
warnings.warn("TestResult has no addExpectedFailure method, reporting as passes",
RuntimeWarning)
result.addSuccess(self)
else:
addExpectedFailure(self, exc_info)
def _addUnexpectedSuccess(self, result):
try:
addUnexpectedSuccess = result.addUnexpectedSuccess
except AttributeError:
warnings.warn("TestResult has no addUnexpectedSuccess method, reporting as failure",
RuntimeWarning)
# We need to pass an actual exception and traceback to addFailure,
# otherwise the legacy result can choke.
try:
raise _UnexpectedSuccess from None
except _UnexpectedSuccess:
result.addFailure(self, sys.exc_info())
else:
addUnexpectedSuccess(self)
def run(self, result=None):
orig_result = result
if result is None:
result = self.defaultTestResult()
startTestRun = getattr(result, 'startTestRun', None)
if startTestRun is not None:
startTestRun()
result.startTest(self)
testMethod = getattr(self, self._testMethodName)
if (getattr(self.__class__, "__unittest_skip__", False) or
getattr(testMethod, "__unittest_skip__", False)):
# If the class or method was skipped.
try:
skip_why = (getattr(self.__class__, '__unittest_skip_why__', '')
or getattr(testMethod, '__unittest_skip_why__', ''))
self._addSkip(result, self, skip_why)
finally:
result.stopTest(self)
return
expecting_failure_method = getattr(testMethod,
"__unittest_expecting_failure__", False)
expecting_failure_class = getattr(self,
"__unittest_expecting_failure__", False)
expecting_failure = expecting_failure_class or expecting_failure_method
outcome = _Outcome(result)
try:
self._outcome = outcome
with outcome.testPartExecutor(self):
self.setUp()
if outcome.success:
outcome.expecting_failure = expecting_failure
with outcome.testPartExecutor(self, isTest=True):
testMethod()
outcome.expecting_failure = False
with outcome.testPartExecutor(self):
self.tearDown()
self.doCleanups()
for test, reason in outcome.skipped:
self._addSkip(result, test, reason)
self._feedErrorsToResult(result, outcome.errors)
if outcome.success:
if expecting_failure:
if outcome.expectedFailure:
self._addExpectedFailure(result, outcome.expectedFailure)
else:
self._addUnexpectedSuccess(result)
else:
result.addSuccess(self)
return result
finally:
result.stopTest(self)
if orig_result is None:
stopTestRun = getattr(result, 'stopTestRun', None)
if stopTestRun is not None:
stopTestRun()
# explicitly break reference cycles:
# outcome.errors -> frame -> outcome -> outcome.errors
# outcome.expectedFailure -> frame -> outcome -> outcome.expectedFailure
outcome.errors.clear()
outcome.expectedFailure = None
# clear the outcome, no more needed
self._outcome = None
def doCleanups(self):
"""Execute all cleanup functions. Normally called for you after
tearDown."""
outcome = self._outcome or _Outcome()
while self._cleanups:
function, args, kwargs = self._cleanups.pop()
with outcome.testPartExecutor(self):
function(*args, **kwargs)
# return this for backwards compatibility
# even though we no longer us it internally
return outcome.success
def __call__(self, *args, **kwds):
return self.run(*args, **kwds)
def debug(self):
"""Run the test without collecting errors in a TestResult"""
self.setUp()
getattr(self, self._testMethodName)()
self.tearDown()
while self._cleanups:
function, args, kwargs = self._cleanups.pop(-1)
function(*args, **kwargs)
def skipTest(self, reason):
"""Skip this test."""
raise SkipTest(reason)
def fail(self, msg=None):
"""Fail immediately, with the given message."""
raise self.failureException(msg)
def assertFalse(self, expr, msg=None):
"""Check that the expression is false."""
if expr:
msg = self._formatMessage(msg, "%s is not false" % safe_repr(expr))
raise self.failureException(msg)
def assertTrue(self, expr, msg=None):
"""Check that the expression is true."""
if not expr:
msg = self._formatMessage(msg, "%s is not true" % safe_repr(expr))
raise self.failureException(msg)
def _formatMessage(self, msg, standardMsg):
"""Honour the longMessage attribute when generating failure messages.
If longMessage is False this means:
* Use only an explicit message if it is provided
* Otherwise use the standard message for the assert
If longMessage is True:
* Use the standard message
* If an explicit message is provided, plus ' : ' and the explicit message
"""
if not self.longMessage:
return msg or standardMsg
if msg is None:
return standardMsg
try:
# don't switch to '{}' formatting in Python 2.X
# it changes the way unicode input is handled
return '%s : %s' % (standardMsg, msg)
except UnicodeDecodeError:
return '%s : %s' % (safe_repr(standardMsg), safe_repr(msg))
def assertRaises(self, expected_exception, *args, **kwargs):
"""Fail unless an exception of class expected_exception is raised
by the callable when invoked with specified positional and
keyword arguments. If a different type of exception is
raised, it will not be caught, and the test case will be
deemed to have suffered an error, exactly as for an
unexpected exception.
If called with the callable and arguments omitted, will return a
context object used like this::
with self.assertRaises(SomeException):
do_something()
An optional keyword argument 'msg' can be provided when assertRaises
is used as a context object.
The context manager keeps a reference to the exception as
the 'exception' attribute. This allows you to inspect the
exception after the assertion::
with self.assertRaises(SomeException) as cm:
do_something()
the_exception = cm.exception
self.assertEqual(the_exception.error_code, 3)
"""
context = _AssertRaisesContext(expected_exception, self)
try:
return context.handle('assertRaises', args, kwargs)
finally:
# bpo-23890: manually break a reference cycle
context = None
def assertWarns(self, expected_warning, *args, **kwargs):
"""Fail unless a warning of class warnClass is triggered
by the callable when invoked with specified positional and
keyword arguments. If a different type of warning is
triggered, it will not be handled: depending on the other
warning filtering rules in effect, it might be silenced, printed
out, or raised as an exception.
If called with the callable and arguments omitted, will return a
context object used like this::
with self.assertWarns(SomeWarning):
do_something()
An optional keyword argument 'msg' can be provided when assertWarns
is used as a context object.
The context manager keeps a reference to the first matching
warning as the 'warning' attribute; similarly, the 'filename'
and 'lineno' attributes give you information about the line
of Python code from which the warning was triggered.
This allows you to inspect the warning after the assertion::
with self.assertWarns(SomeWarning) as cm:
do_something()
the_warning = cm.warning
self.assertEqual(the_warning.some_attribute, 147)
"""
context = _AssertWarnsContext(expected_warning, self)
return context.handle('assertWarns', args, kwargs)
def assertLogs(self, logger=None, level=None):
"""Fail unless a log message of level *level* or higher is emitted
on *logger_name* or its children. If omitted, *level* defaults to
INFO and *logger* defaults to the root logger.
This method must be used as a context manager, and will yield
a recording object with two attributes: `output` and `records`.
At the end of the context manager, the `output` attribute will
be a list of the matching formatted log messages and the
`records` attribute will be a list of the corresponding LogRecord
objects.
Example::
with self.assertLogs('foo', level='INFO') as cm:
logging.getLogger('foo').info('first message')
logging.getLogger('foo.bar').error('second message')
self.assertEqual(cm.output, ['INFO:foo:first message',
'ERROR:foo.bar:second message'])
"""
return _AssertLogsContext(self, logger, level)
def _getAssertEqualityFunc(self, first, second):
"""Get a detailed comparison function for the types of the two args.
Returns: A callable accepting (first, second, msg=None) that will
raise a failure exception if first != second with a useful human
readable error message for those types.
"""
#
# NOTE(gregory.p.smith): I considered isinstance(first, type(second))
# and vice versa. I opted for the conservative approach in case
# subclasses are not intended to be compared in detail to their super
# class instances using a type equality func. This means testing
# subtypes won't automagically use the detailed comparison. Callers
# should use their type specific assertSpamEqual method to compare
# subclasses if the detailed comparison is desired and appropriate.
# See the discussion in http://bugs.python.org/issue2578.
#
if type(first) is type(second):
asserter = self._type_equality_funcs.get(type(first))
if asserter is not None:
if isinstance(asserter, str):
asserter = getattr(self, asserter)
return asserter
return self._baseAssertEqual
def _baseAssertEqual(self, first, second, msg=None):
"""The default assertEqual implementation, not type specific."""
if not first == second:
standardMsg = '%s != %s' % _common_shorten_repr(first, second)
msg = self._formatMessage(msg, standardMsg)
raise self.failureException(msg)
def assertEqual(self, first, second, msg=None):
"""Fail if the two objects are unequal as determined by the '=='
operator.
"""
assertion_func = self._getAssertEqualityFunc(first, second)
assertion_func(first, second, msg=msg)
def assertNotEqual(self, first, second, msg=None):
"""Fail if the two objects are equal as determined by the '!='
operator.
"""
if not first != second:
msg = self._formatMessage(msg, '%s == %s' % (safe_repr(first),
safe_repr(second)))
raise self.failureException(msg)
def assertAlmostEqual(self, first, second, places=None, msg=None,
delta=None):
"""Fail if the two objects are unequal as determined by their
difference rounded to the given number of decimal places
(default 7) and comparing to zero, or by comparing that the
difference between the two objects is more than the given
delta.
Note that decimal places (from zero) are usually not the same
as significant digits (measured from the most significant digit).
If the two objects compare equal then they will automatically
compare almost equal.
"""
if first == second:
# shortcut
return
if delta is not None and places is not None:
raise TypeError("specify delta or places not both")
if delta is not None:
if abs(first - second) <= delta:
return
standardMsg = '%s != %s within %s delta' % (safe_repr(first),
safe_repr(second),
safe_repr(delta))
else:
if places is None:
places = 7
if round(abs(second-first), places) == 0:
return
standardMsg = '%s != %s within %r places' % (safe_repr(first),
safe_repr(second),
places)
msg = self._formatMessage(msg, standardMsg)
raise self.failureException(msg)
def assertNotAlmostEqual(self, first, second, places=None, msg=None,
delta=None):
"""Fail if the two objects are equal as determined by their
difference rounded to the given number of decimal places
(default 7) and comparing to zero, or by comparing that the
difference between the two objects is less than the given delta.
Note that decimal places (from zero) are usually not the same
as significant digits (measured from the most significant digit).
Objects that are equal automatically fail.
"""
if delta is not None and places is not None:
raise TypeError("specify delta or places not both")
if delta is not None:
if not (first == second) and abs(first - second) > delta:
return
standardMsg = '%s == %s within %s delta' % (safe_repr(first),
safe_repr(second),
safe_repr(delta))
else:
if places is None:
places = 7
if not (first == second) and round(abs(second-first), places) != 0:
return
standardMsg = '%s == %s within %r places' % (safe_repr(first),
safe_repr(second),
places)
msg = self._formatMessage(msg, standardMsg)
raise self.failureException(msg)
def assertSequenceEqual(self, seq1, seq2, msg=None, seq_type=None):
"""An equality assertion for ordered sequences (like lists and tuples).
For the purposes of this function, a valid ordered sequence type is one
which can be indexed, has a length, and has an equality operator.
Args:
seq1: The first sequence to compare.
seq2: The second sequence to compare.
seq_type: The expected datatype of the sequences, or None if no
datatype should be enforced.
msg: Optional message to use on failure instead of a list of
differences.
"""
if seq_type is not None:
seq_type_name = seq_type.__name__
if not isinstance(seq1, seq_type):
raise self.failureException('First sequence is not a %s: %s'
% (seq_type_name, safe_repr(seq1)))
if not isinstance(seq2, seq_type):
raise self.failureException('Second sequence is not a %s: %s'
% (seq_type_name, safe_repr(seq2)))
else:
seq_type_name = "sequence"
differing = None
try:
len1 = len(seq1)
except (TypeError, NotImplementedError):
differing = 'First %s has no length. Non-sequence?' % (
seq_type_name)
if differing is None:
try:
len2 = len(seq2)
except (TypeError, NotImplementedError):
differing = 'Second %s has no length. Non-sequence?' % (
seq_type_name)
if differing is None:
if seq1 == seq2:
return
differing = '%ss differ: %s != %s\n' % (
(seq_type_name.capitalize(),) +
_common_shorten_repr(seq1, seq2))
for i in range(min(len1, len2)):
try:
item1 = seq1[i]
except (TypeError, IndexError, NotImplementedError):
differing += ('\nUnable to index element %d of first %s\n' %
(i, seq_type_name))
break
try:
item2 = seq2[i]
except (TypeError, IndexError, NotImplementedError):
differing += ('\nUnable to index element %d of second %s\n' %
(i, seq_type_name))
break
if item1 != item2:
differing += ('\nFirst differing element %d:\n%s\n%s\n' %
((i,) + _common_shorten_repr(item1, item2)))
break
else:
if (len1 == len2 and seq_type is None and
type(seq1) != type(seq2)):
# The sequences are the same, but have differing types.
return
if len1 > len2:
differing += ('\nFirst %s contains %d additional '
'elements.\n' % (seq_type_name, len1 - len2))
try:
differing += ('First extra element %d:\n%s\n' %
(len2, safe_repr(seq1[len2])))
except (TypeError, IndexError, NotImplementedError):
differing += ('Unable to index element %d '
'of first %s\n' % (len2, seq_type_name))
elif len1 < len2:
differing += ('\nSecond %s contains %d additional '
'elements.\n' % (seq_type_name, len2 - len1))
try:
differing += ('First extra element %d:\n%s\n' %
(len1, safe_repr(seq2[len1])))
except (TypeError, IndexError, NotImplementedError):
differing += ('Unable to index element %d '
'of second %s\n' % (len1, seq_type_name))
standardMsg = differing
diffMsg = '\n' + '\n'.join(
difflib.ndiff(pprint.pformat(seq1).splitlines(),
pprint.pformat(seq2).splitlines()))
standardMsg = self._truncateMessage(standardMsg, diffMsg)
msg = self._formatMessage(msg, standardMsg)
self.fail(msg)
def _truncateMessage(self, message, diff):
max_diff = self.maxDiff
if max_diff is None or len(diff) <= max_diff:
return message + diff
return message + (DIFF_OMITTED % len(diff))
def assertListEqual(self, list1, list2, msg=None):
"""A list-specific equality assertion.
Args:
list1: The first list to compare.
list2: The second list to compare.
msg: Optional message to use on failure instead of a list of
differences.
"""
self.assertSequenceEqual(list1, list2, msg, seq_type=list)
def assertTupleEqual(self, tuple1, tuple2, msg=None):
"""A tuple-specific equality assertion.
Args:
tuple1: The first tuple to compare.
tuple2: The second tuple to compare.
msg: Optional message to use on failure instead of a list of
differences.
"""
self.assertSequenceEqual(tuple1, tuple2, msg, seq_type=tuple)
def assertSetEqual(self, set1, set2, msg=None):
"""A set-specific equality assertion.
Args:
set1: The first set to compare.
set2: The second set to compare.
msg: Optional message to use on failure instead of a list of
differences.
assertSetEqual uses ducktyping to support different types of sets, and
is optimized for sets specifically (parameters must support a
difference method).
"""
try:
difference1 = set1.difference(set2)
except TypeError as e:
self.fail('invalid type when attempting set difference: %s' % e)
except AttributeError as e:
self.fail('first argument does not support set difference: %s' % e)
try:
difference2 = set2.difference(set1)
except TypeError as e:
self.fail('invalid type when attempting set difference: %s' % e)
except AttributeError as e:
self.fail('second argument does not support set difference: %s' % e)
if not (difference1 or difference2):
return
lines = []
if difference1:
lines.append('Items in the first set but not the second:')
for item in difference1:
lines.append(repr(item))
if difference2:
lines.append('Items in the second set but not the first:')
for item in difference2:
lines.append(repr(item))
standardMsg = '\n'.join(lines)
self.fail(self._formatMessage(msg, standardMsg))
def assertIn(self, member, container, msg=None):
"""Just like self.assertTrue(a in b), but with a nicer default message."""
if member not in container:
standardMsg = '%s not found in %s' % (safe_repr(member),
safe_repr(container))
self.fail(self._formatMessage(msg, standardMsg))
def assertNotIn(self, member, container, msg=None):
"""Just like self.assertTrue(a not in b), but with a nicer default message."""
if member in container:
standardMsg = '%s unexpectedly found in %s' % (safe_repr(member),
safe_repr(container))
self.fail(self._formatMessage(msg, standardMsg))
def assertIs(self, expr1, expr2, msg=None):
"""Just like self.assertTrue(a is b), but with a nicer default message."""
if expr1 is not expr2:
standardMsg = '%s is not %s' % (safe_repr(expr1),
safe_repr(expr2))
self.fail(self._formatMessage(msg, standardMsg))
def assertIsNot(self, expr1, expr2, msg=None):
"""Just like self.assertTrue(a is not b), but with a nicer default message."""
if expr1 is expr2:
standardMsg = 'unexpectedly identical: %s' % (safe_repr(expr1),)
self.fail(self._formatMessage(msg, standardMsg))
def assertDictEqual(self, d1, d2, msg=None):
self.assertIsInstance(d1, dict, 'First argument is not a dictionary')
self.assertIsInstance(d2, dict, 'Second argument is not a dictionary')
if d1 != d2:
standardMsg = '%s != %s' % _common_shorten_repr(d1, d2)
diff = ('\n' + '\n'.join(difflib.ndiff(
pprint.pformat(d1).splitlines(),
pprint.pformat(d2).splitlines())))
standardMsg = self._truncateMessage(standardMsg, diff)
self.fail(self._formatMessage(msg, standardMsg))
def assertDictContainsSubset(self, subset, dictionary, msg=None):
"""Checks whether dictionary is a superset of subset."""
warnings.warn('assertDictContainsSubset is deprecated',
DeprecationWarning)
missing = []
mismatched = []
for key, value in subset.items():
if key not in dictionary:
missing.append(key)
elif value != dictionary[key]:
mismatched.append('%s, expected: %s, actual: %s' %
(safe_repr(key), safe_repr(value),
safe_repr(dictionary[key])))
if not (missing or mismatched):
return
standardMsg = ''
if missing:
standardMsg = 'Missing: %s' % ','.join(safe_repr(m) for m in
missing)
if mismatched:
if standardMsg:
standardMsg += '; '
standardMsg += 'Mismatched values: %s' % ','.join(mismatched)
self.fail(self._formatMessage(msg, standardMsg))
def assertCountEqual(self, first, second, msg=None):
"""An unordered sequence comparison asserting that the same elements,
regardless of order. If the same element occurs more than once,
it verifies that the elements occur the same number of times.
self.assertEqual(Counter(list(first)),
Counter(list(second)))
Example:
- [0, 1, 1] and [1, 0, 1] compare equal.
- [0, 0, 1] and [0, 1] compare unequal.
"""
first_seq, second_seq = list(first), list(second)
try:
first = collections.Counter(first_seq)
second = collections.Counter(second_seq)
except TypeError:
# Handle case with unhashable elements
differences = _count_diff_all_purpose(first_seq, second_seq)
else:
if first == second:
return
differences = _count_diff_hashable(first_seq, second_seq)
if differences:
standardMsg = 'Element counts were not equal:\n'
lines = ['First has %d, Second has %d: %r' % diff for diff in differences]
diffMsg = '\n'.join(lines)
standardMsg = self._truncateMessage(standardMsg, diffMsg)
msg = self._formatMessage(msg, standardMsg)
self.fail(msg)
def assertMultiLineEqual(self, first, second, msg=None):
"""Assert that two multi-line strings are equal."""
self.assertIsInstance(first, str, 'First argument is not a string')
self.assertIsInstance(second, str, 'Second argument is not a string')
if first != second:
# don't use difflib if the strings are too long
if (len(first) > self._diffThreshold or
len(second) > self._diffThreshold):
self._baseAssertEqual(first, second, msg)
firstlines = first.splitlines(keepends=True)
secondlines = second.splitlines(keepends=True)
if len(firstlines) == 1 and first.strip('\r\n') == first:
firstlines = [first + '\n']
secondlines = [second + '\n']
standardMsg = '%s != %s' % _common_shorten_repr(first, second)
diff = '\n' + ''.join(difflib.ndiff(firstlines, secondlines))
standardMsg = self._truncateMessage(standardMsg, diff)
self.fail(self._formatMessage(msg, standardMsg))
def assertLess(self, a, b, msg=None):
"""Just like self.assertTrue(a < b), but with a nicer default message."""
if not a < b:
standardMsg = '%s not less than %s' % (safe_repr(a), safe_repr(b))
self.fail(self._formatMessage(msg, standardMsg))
def assertLessEqual(self, a, b, msg=None):
"""Just like self.assertTrue(a <= b), but with a nicer default message."""
if not a <= b:
standardMsg = '%s not less than or equal to %s' % (safe_repr(a), safe_repr(b))
self.fail(self._formatMessage(msg, standardMsg))
def assertGreater(self, a, b, msg=None):
"""Just like self.assertTrue(a > b), but with a nicer default message."""
if not a > b:
standardMsg = '%s not greater than %s' % (safe_repr(a), safe_repr(b))
self.fail(self._formatMessage(msg, standardMsg))
def assertGreaterEqual(self, a, b, msg=None):
"""Just like self.assertTrue(a >= b), but with a nicer default message."""
if not a >= b:
standardMsg = '%s not greater than or equal to %s' % (safe_repr(a), safe_repr(b))
self.fail(self._formatMessage(msg, standardMsg))
def assertIsNone(self, obj, msg=None):
"""Same as self.assertTrue(obj is None), with a nicer default message."""
if obj is not None:
standardMsg = '%s is not None' % (safe_repr(obj),)
self.fail(self._formatMessage(msg, standardMsg))
def assertIsNotNone(self, obj, msg=None):
"""Included for symmetry with assertIsNone."""
if obj is None:
standardMsg = 'unexpectedly None'
self.fail(self._formatMessage(msg, standardMsg))
def assertIsInstance(self, obj, cls, msg=None):
"""Same as self.assertTrue(isinstance(obj, cls)), with a nicer
default message."""
if not isinstance(obj, cls):
standardMsg = '%s is not an instance of %r' % (safe_repr(obj), cls)
self.fail(self._formatMessage(msg, standardMsg))
def assertNotIsInstance(self, obj, cls, msg=None):
"""Included for symmetry with assertIsInstance."""
if isinstance(obj, cls):
standardMsg = '%s is an instance of %r' % (safe_repr(obj), cls)
self.fail(self._formatMessage(msg, standardMsg))
def assertRaisesRegex(self, expected_exception, expected_regex,
*args, **kwargs):
"""Asserts that the message in a raised exception matches a regex.
Args:
expected_exception: Exception class expected to be raised.
expected_regex: Regex (re pattern object or string) expected
to be found in error message.
args: Function to be called and extra positional args.
kwargs: Extra kwargs.
msg: Optional message used in case of failure. Can only be used
when assertRaisesRegex is used as a context manager.
"""
context = _AssertRaisesContext(expected_exception, self, expected_regex)
return context.handle('assertRaisesRegex', args, kwargs)
def assertWarnsRegex(self, expected_warning, expected_regex,
*args, **kwargs):
"""Asserts that the message in a triggered warning matches a regexp.
Basic functioning is similar to assertWarns() with the addition
that only warnings whose messages also match the regular expression
are considered successful matches.
Args:
expected_warning: Warning class expected to be triggered.
expected_regex: Regex (re pattern object or string) expected
to be found in error message.
args: Function to be called and extra positional args.
kwargs: Extra kwargs.
msg: Optional message used in case of failure. Can only be used
when assertWarnsRegex is used as a context manager.
"""
context = _AssertWarnsContext(expected_warning, self, expected_regex)
return context.handle('assertWarnsRegex', args, kwargs)
def assertRegex(self, text, expected_regex, msg=None):
"""Fail the test unless the text matches the regular expression."""
if isinstance(expected_regex, (str, bytes)):
assert expected_regex, "expected_regex must not be empty."
expected_regex = re.compile(expected_regex)
if not expected_regex.search(text):
standardMsg = "Regex didn't match: %r not found in %r" % (
expected_regex.pattern, text)
# _formatMessage ensures the longMessage option is respected
msg = self._formatMessage(msg, standardMsg)
raise self.failureException(msg)
def assertNotRegex(self, text, unexpected_regex, msg=None):
"""Fail the test if the text matches the regular expression."""
if isinstance(unexpected_regex, (str, bytes)):
unexpected_regex = re.compile(unexpected_regex)
match = unexpected_regex.search(text)
if match:
standardMsg = 'Regex matched: %r matches %r in %r' % (
text[match.start() : match.end()],
unexpected_regex.pattern,
text)
# _formatMessage ensures the longMessage option is respected
msg = self._formatMessage(msg, standardMsg)
raise self.failureException(msg)
def _deprecate(original_func):
def deprecated_func(*args, **kwargs):
warnings.warn(
'Please use {0} instead.'.format(original_func.__name__),
DeprecationWarning, 2)
return original_func(*args, **kwargs)
return deprecated_func
# see #9424
failUnlessEqual = assertEquals = _deprecate(assertEqual)
failIfEqual = assertNotEquals = _deprecate(assertNotEqual)
failUnlessAlmostEqual = assertAlmostEquals = _deprecate(assertAlmostEqual)
failIfAlmostEqual = assertNotAlmostEquals = _deprecate(assertNotAlmostEqual)
failUnless = assert_ = _deprecate(assertTrue)
failUnlessRaises = _deprecate(assertRaises)
failIf = _deprecate(assertFalse)
assertRaisesRegexp = _deprecate(assertRaisesRegex)
assertRegexpMatches = _deprecate(assertRegex)
assertNotRegexpMatches = _deprecate(assertNotRegex)
class FunctionTestCase(TestCase):
"""A test case that wraps a test function.
This is useful for slipping pre-existing test functions into the
unittest framework. Optionally, set-up and tidy-up functions can be
supplied. As with TestCase, the tidy-up ('tearDown') function will
always be called if the set-up ('setUp') function ran successfully.
"""
def __init__(self, testFunc, setUp=None, tearDown=None, description=None):
super(FunctionTestCase, self).__init__()
self._setUpFunc = setUp
self._tearDownFunc = tearDown
self._testFunc = testFunc
self._description = description
def setUp(self):
if self._setUpFunc is not None:
self._setUpFunc()
def tearDown(self):
if self._tearDownFunc is not None:
self._tearDownFunc()
def runTest(self):
self._testFunc()
def id(self):
return self._testFunc.__name__
def __eq__(self, other):
if not isinstance(other, self.__class__):
return NotImplemented
return self._setUpFunc == other._setUpFunc and \
self._tearDownFunc == other._tearDownFunc and \
self._testFunc == other._testFunc and \
self._description == other._description
def __hash__(self):
return hash((type(self), self._setUpFunc, self._tearDownFunc,
self._testFunc, self._description))
def __str__(self):
return "%s (%s)" % (strclass(self.__class__),
self._testFunc.__name__)
def __repr__(self):
return "<%s tec=%s>" % (strclass(self.__class__),
self._testFunc)
def shortDescription(self):
if self._description is not None:
return self._description
doc = self._testFunc.__doc__
return doc and doc.split("\n")[0].strip() or None
class _SubTest(TestCase):
def __init__(self, test_case, message, params):
super().__init__()
self._message = message
self.test_case = test_case
self.params = params
self.failureException = test_case.failureException
def runTest(self):
raise NotImplementedError("subtests cannot be run directly")
def _subDescription(self):
parts = []
if self._message is not _subtest_msg_sentinel:
parts.append("[{}]".format(self._message))
if self.params:
params_desc = ', '.join(
"{}={!r}".format(k, v)
for (k, v) in sorted(self.params.items()))
parts.append("({})".format(params_desc))
return " ".join(parts) or '(<subtest>)'
def id(self):
return "{} {}".format(self.test_case.id(), self._subDescription())
def shortDescription(self):
"""Returns a one-line description of the subtest, or None if no
description has been provided.
"""
return self.test_case.shortDescription()
def __str__(self):
return "{} {}".format(self.test_case, self._subDescription())
| 56,986 | 1,430 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/signals.py | import signal
import weakref
from functools import wraps
__unittest = True
class _InterruptHandler(object):
def __init__(self, default_handler):
self.called = False
self.original_handler = default_handler
if isinstance(default_handler, int):
if default_handler == signal.SIG_DFL:
# Pretend it's signal.default_int_handler instead.
default_handler = signal.default_int_handler
elif default_handler == signal.SIG_IGN:
# Not quite the same thing as SIG_IGN, but the closest we
# can make it: do nothing.
def default_handler(unused_signum, unused_frame):
pass
else:
raise TypeError("expected SIGINT signal handler to be "
"signal.SIG_IGN, signal.SIG_DFL, or a "
"callable object")
self.default_handler = default_handler
def __call__(self, signum, frame):
installed_handler = signal.getsignal(signal.SIGINT)
if installed_handler is not self:
# if we aren't the installed handler, then delegate immediately
# to the default handler
self.default_handler(signum, frame)
if self.called:
self.default_handler(signum, frame)
self.called = True
for result in _results.keys():
result.stop()
_results = weakref.WeakKeyDictionary()
def registerResult(result):
_results[result] = 1
def removeResult(result):
return bool(_results.pop(result, None))
_interrupt_handler = None
def installHandler():
global _interrupt_handler
if _interrupt_handler is None:
default_handler = signal.getsignal(signal.SIGINT)
_interrupt_handler = _InterruptHandler(default_handler)
signal.signal(signal.SIGINT, _interrupt_handler)
def removeHandler(method=None):
if method is not None:
@wraps(method)
def inner(*args, **kwargs):
initial = signal.getsignal(signal.SIGINT)
removeHandler()
try:
return method(*args, **kwargs)
finally:
signal.signal(signal.SIGINT, initial)
return inner
global _interrupt_handler
if _interrupt_handler is not None:
signal.signal(signal.SIGINT, _interrupt_handler.original_handler)
| 2,403 | 72 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/loader.py | """Loading unittests."""
import os
import re
import sys
import traceback
import types
import functools
import warnings
from fnmatch import fnmatch
from . import case, suite, util
__unittest = True
# what about .pyc (etc)
# we would need to avoid loading the same tests multiple times
# from '.py', *and* '.pyc'
VALID_MODULE_NAME = re.compile(r'[_a-z]\w*\.py$', re.IGNORECASE)
class _FailedTest(case.TestCase):
_testMethodName = None
def __init__(self, method_name, exception):
self._exception = exception
super(_FailedTest, self).__init__(method_name)
def __getattr__(self, name):
if name != self._testMethodName:
return super(_FailedTest, self).__getattr__(name)
def testFailure():
raise self._exception
return testFailure
def _make_failed_import_test(name, suiteClass):
message = 'Failed to import test module: %s\n%s' % (
name, traceback.format_exc())
return _make_failed_test(name, ImportError(message), suiteClass, message)
def _make_failed_load_tests(name, exception, suiteClass):
message = 'Failed to call load_tests:\n%s' % (traceback.format_exc(),)
return _make_failed_test(
name, exception, suiteClass, message)
def _make_failed_test(methodname, exception, suiteClass, message):
test = _FailedTest(methodname, exception)
return suiteClass((test,)), message
def _make_skipped_test(methodname, exception, suiteClass):
@case.skip(str(exception))
def testSkipped(self):
pass
attrs = {methodname: testSkipped}
TestClass = type("ModuleSkipped", (case.TestCase,), attrs)
return suiteClass((TestClass(methodname),))
def _jython_aware_splitext(path):
if path.lower().endswith('$py.class'):
return path[:-9]
return os.path.splitext(path)[0]
class TestLoader(object):
"""
This class is responsible for loading tests according to various criteria
and returning them wrapped in a TestSuite
"""
testMethodPrefix = 'test'
sortTestMethodsUsing = staticmethod(util.three_way_cmp)
suiteClass = suite.TestSuite
_top_level_dir = None
def __init__(self):
super(TestLoader, self).__init__()
self.errors = []
# Tracks packages which we have called into via load_tests, to
# avoid infinite re-entrancy.
self._loading_packages = set()
def loadTestsFromTestCase(self, testCaseClass):
"""Return a suite of all test cases contained in testCaseClass"""
if issubclass(testCaseClass, suite.TestSuite):
raise TypeError("Test cases should not be derived from "
"TestSuite. Maybe you meant to derive from "
"TestCase?")
testCaseNames = self.getTestCaseNames(testCaseClass)
if not testCaseNames and hasattr(testCaseClass, 'runTest'):
testCaseNames = ['runTest']
loaded_suite = self.suiteClass(map(testCaseClass, testCaseNames))
return loaded_suite
# XXX After Python 3.5, remove backward compatibility hacks for
# use_load_tests deprecation via *args and **kws. See issue 16662.
def loadTestsFromModule(self, module, *args, pattern=None, **kws):
"""Return a suite of all test cases contained in the given module"""
# This method used to take an undocumented and unofficial
# use_load_tests argument. For backward compatibility, we still
# accept the argument (which can also be the first position) but we
# ignore it and issue a deprecation warning if it's present.
if len(args) > 0 or 'use_load_tests' in kws:
warnings.warn('use_load_tests is deprecated and ignored',
DeprecationWarning)
kws.pop('use_load_tests', None)
if len(args) > 1:
# Complain about the number of arguments, but don't forget the
# required `module` argument.
complaint = len(args) + 1
raise TypeError('loadTestsFromModule() takes 1 positional argument but {} were given'.format(complaint))
if len(kws) != 0:
# Since the keyword arguments are unsorted (see PEP 468), just
# pick the alphabetically sorted first argument to complain about,
# if multiple were given. At least the error message will be
# predictable.
complaint = sorted(kws)[0]
raise TypeError("loadTestsFromModule() got an unexpected keyword argument '{}'".format(complaint))
tests = []
for name in dir(module):
obj = getattr(module, name)
if isinstance(obj, type) and issubclass(obj, case.TestCase):
tests.append(self.loadTestsFromTestCase(obj))
load_tests = getattr(module, 'load_tests', None)
tests = self.suiteClass(tests)
if load_tests is not None:
try:
return load_tests(self, tests, pattern)
except Exception as e:
error_case, error_message = _make_failed_load_tests(
module.__name__, e, self.suiteClass)
self.errors.append(error_message)
return error_case
return tests
def loadTestsFromName(self, name, module=None):
"""Return a suite of all test cases given a string specifier.
The name may resolve either to a module, a test case class, a
test method within a test case class, or a callable object which
returns a TestCase or TestSuite instance.
The method optionally resolves the names relative to a given module.
"""
parts = name.split('.')
error_case, error_message = None, None
if module is None:
parts_copy = parts[:]
while parts_copy:
try:
module_name = '.'.join(parts_copy)
module = __import__(module_name)
break
except ImportError:
next_attribute = parts_copy.pop()
# Last error so we can give it to the user if needed.
error_case, error_message = _make_failed_import_test(
next_attribute, self.suiteClass)
if not parts_copy:
# Even the top level import failed: report that error.
self.errors.append(error_message)
return error_case
parts = parts[1:]
obj = module
for part in parts:
try:
parent, obj = obj, getattr(obj, part)
except AttributeError as e:
# We can't traverse some part of the name.
if (getattr(obj, '__path__', None) is not None
and error_case is not None):
# This is a package (no __path__ per importlib docs), and we
# encountered an error importing something. We cannot tell
# the difference between package.WrongNameTestClass and
# package.wrong_module_name so we just report the
# ImportError - it is more informative.
self.errors.append(error_message)
return error_case
else:
# Otherwise, we signal that an AttributeError has occurred.
error_case, error_message = _make_failed_test(
part, e, self.suiteClass,
'Failed to access attribute:\n%s' % (
traceback.format_exc(),))
self.errors.append(error_message)
return error_case
if isinstance(obj, types.ModuleType):
return self.loadTestsFromModule(obj)
elif isinstance(obj, type) and issubclass(obj, case.TestCase):
return self.loadTestsFromTestCase(obj)
elif (isinstance(obj, types.FunctionType) and
isinstance(parent, type) and
issubclass(parent, case.TestCase)):
name = parts[-1]
inst = parent(name)
# static methods follow a different path
if not isinstance(getattr(inst, name), types.FunctionType):
return self.suiteClass([inst])
elif isinstance(obj, suite.TestSuite):
return obj
if callable(obj):
test = obj()
if isinstance(test, suite.TestSuite):
return test
elif isinstance(test, case.TestCase):
return self.suiteClass([test])
else:
raise TypeError("calling %s returned %s, not a test" %
(obj, test))
else:
raise TypeError("don't know how to make test from: %s" % obj)
def loadTestsFromNames(self, names, module=None):
"""Return a suite of all test cases found using the given sequence
of string specifiers. See 'loadTestsFromName()'.
"""
suites = [self.loadTestsFromName(name, module) for name in names]
return self.suiteClass(suites)
def getTestCaseNames(self, testCaseClass):
"""Return a sorted sequence of method names found within testCaseClass
"""
def isTestMethod(attrname, testCaseClass=testCaseClass,
prefix=self.testMethodPrefix):
return attrname.startswith(prefix) and \
callable(getattr(testCaseClass, attrname))
testFnNames = list(filter(isTestMethod, dir(testCaseClass)))
if self.sortTestMethodsUsing:
testFnNames.sort(key=functools.cmp_to_key(self.sortTestMethodsUsing))
return testFnNames
def discover(self, start_dir, pattern='test*.py', top_level_dir=None):
"""Find and return all test modules from the specified start
directory, recursing into subdirectories to find them and return all
tests found within them. Only test files that match the pattern will
be loaded. (Using shell style pattern matching.)
All test modules must be importable from the top level of the project.
If the start directory is not the top level directory then the top
level directory must be specified separately.
If a test package name (directory with '__init__.py') matches the
pattern then the package will be checked for a 'load_tests' function. If
this exists then it will be called with (loader, tests, pattern) unless
the package has already had load_tests called from the same discovery
invocation, in which case the package module object is not scanned for
tests - this ensures that when a package uses discover to further
discover child tests that infinite recursion does not happen.
If load_tests exists then discovery does *not* recurse into the package,
load_tests is responsible for loading all tests in the package.
The pattern is deliberately not stored as a loader attribute so that
packages can continue discovery themselves. top_level_dir is stored so
load_tests does not need to pass this argument in to loader.discover().
Paths are sorted before being imported to ensure reproducible execution
order even on filesystems with non-alphabetical ordering like ext3/4.
"""
set_implicit_top = False
if top_level_dir is None and self._top_level_dir is not None:
# make top_level_dir optional if called from load_tests in a package
top_level_dir = self._top_level_dir
elif top_level_dir is None:
set_implicit_top = True
top_level_dir = start_dir
top_level_dir = os.path.abspath(top_level_dir)
if not top_level_dir in sys.path:
# all test modules must be importable from the top level directory
# should we *unconditionally* put the start directory in first
# in sys.path to minimise likelihood of conflicts between installed
# modules and development versions?
sys.path.insert(0, top_level_dir)
self._top_level_dir = top_level_dir
is_not_importable = False
is_namespace = False
tests = []
if os.path.isdir(os.path.abspath(start_dir)):
start_dir = os.path.abspath(start_dir)
if start_dir != top_level_dir:
is_not_importable_py = not os.path.isfile(os.path.join(start_dir, '__init__.py'))
is_not_importable_pyc = not os.path.isfile(os.path.join(start_dir, '__init__.pyc'))
is_not_importable = is_not_importable_py and is_not_importable_pyc
else:
# support for discovery from dotted module names
try:
__import__(start_dir)
except ImportError:
is_not_importable = True
else:
the_module = sys.modules[start_dir]
top_part = start_dir.split('.')[0]
try:
start_dir = os.path.abspath(
os.path.dirname((the_module.__file__)))
except AttributeError:
# look for namespace packages
try:
spec = the_module.__spec__
except AttributeError:
spec = None
if spec and spec.loader is None:
if spec.submodule_search_locations is not None:
is_namespace = True
for path in the_module.__path__:
if (not set_implicit_top and
not path.startswith(top_level_dir)):
continue
self._top_level_dir = \
(path.split(the_module.__name__
.replace(".", os.path.sep))[0])
tests.extend(self._find_tests(path,
pattern,
namespace=True))
elif the_module.__name__ in sys.builtin_module_names:
# builtin module
raise TypeError('Can not use builtin modules '
'as dotted module names') from None
else:
raise TypeError(
'don\'t know how to discover from {!r}'
.format(the_module)) from None
if set_implicit_top:
if not is_namespace:
self._top_level_dir = \
self._get_directory_containing_module(top_part)
sys.path.remove(top_level_dir)
else:
sys.path.remove(top_level_dir)
if is_not_importable:
raise ImportError('Start directory is not importable: %r' % start_dir)
if not is_namespace:
tests = list(self._find_tests(start_dir, pattern))
return self.suiteClass(tests)
def _get_directory_containing_module(self, module_name):
module = sys.modules[module_name]
full_path = os.path.abspath(module.__file__)
if os.path.basename(full_path).lower().startswith('__init__.py'):
return os.path.dirname(os.path.dirname(full_path))
else:
# here we have been given a module rather than a package - so
# all we can do is search the *same* directory the module is in
# should an exception be raised instead
return os.path.dirname(full_path)
def _get_name_from_path(self, path):
if path == self._top_level_dir:
return '.'
path = _jython_aware_splitext(os.path.normpath(path))
_relpath = os.path.relpath(path, self._top_level_dir)
assert not os.path.isabs(_relpath), "Path must be within the project"
assert not _relpath.startswith('..'), "Path must be within the project"
name = _relpath.replace(os.path.sep, '.')
return name
def _get_module_from_name(self, name):
__import__(name)
return sys.modules[name]
def _match_path(self, path, full_path, pattern):
# override this method to use alternative matching strategy
return fnmatch(path, pattern)
def _find_tests(self, start_dir, pattern, namespace=False):
"""Used by discovery. Yields test suites it loads."""
# Handle the __init__ in this package
name = self._get_name_from_path(start_dir)
# name is '.' when start_dir == top_level_dir (and top_level_dir is by
# definition not a package).
if name != '.' and name not in self._loading_packages:
# name is in self._loading_packages while we have called into
# loadTestsFromModule with name.
tests, should_recurse = self._find_test_path(
start_dir, pattern, namespace)
if tests is not None:
yield tests
if not should_recurse:
# Either an error occurred, or load_tests was used by the
# package.
return
# Handle the contents.
paths = sorted(os.listdir(start_dir))
for path in paths:
full_path = os.path.join(start_dir, path)
tests, should_recurse = self._find_test_path(
full_path, pattern, namespace)
if tests is not None:
yield tests
if should_recurse:
# we found a package that didn't use load_tests.
name = self._get_name_from_path(full_path)
self._loading_packages.add(name)
try:
yield from self._find_tests(full_path, pattern, namespace)
finally:
self._loading_packages.discard(name)
def _find_test_path(self, full_path, pattern, namespace=False):
"""Used by discovery.
Loads tests from a single file, or a directories' __init__.py when
passed the directory.
Returns a tuple (None_or_tests_from_file, should_recurse).
"""
basename = os.path.basename(full_path)
if os.path.isfile(full_path):
if not VALID_MODULE_NAME.match(basename):
# valid Python identifiers only
return None, False
if not self._match_path(basename, full_path, pattern):
return None, False
# if the test file matches, load it
name = self._get_name_from_path(full_path)
try:
module = self._get_module_from_name(name)
except case.SkipTest as e:
return _make_skipped_test(name, e, self.suiteClass), False
except:
error_case, error_message = \
_make_failed_import_test(name, self.suiteClass)
self.errors.append(error_message)
return error_case, False
else:
mod_file = os.path.abspath(
getattr(module, '__file__', full_path))
realpath = _jython_aware_splitext(
os.path.realpath(mod_file))
fullpath_noext = _jython_aware_splitext(
os.path.realpath(full_path))
if realpath.lower() != fullpath_noext.lower():
module_dir = os.path.dirname(realpath)
mod_name = _jython_aware_splitext(
os.path.basename(full_path))
expected_dir = os.path.dirname(full_path)
msg = ("%r module incorrectly imported from %r. Expected "
"%r. Is this module globally installed?")
raise ImportError(
msg % (mod_name, module_dir, expected_dir))
return self.loadTestsFromModule(module, pattern=pattern), False
elif os.path.isdir(full_path):
if (not namespace and
not os.path.isfile(os.path.join(full_path, '__init__.py'))):
return None, False
load_tests = None
tests = None
name = self._get_name_from_path(full_path)
try:
package = self._get_module_from_name(name)
except case.SkipTest as e:
return _make_skipped_test(name, e, self.suiteClass), False
except:
error_case, error_message = \
_make_failed_import_test(name, self.suiteClass)
self.errors.append(error_message)
return error_case, False
else:
load_tests = getattr(package, 'load_tests', None)
# Mark this package as being in load_tests (possibly ;))
self._loading_packages.add(name)
try:
tests = self.loadTestsFromModule(package, pattern=pattern)
if load_tests is not None:
# loadTestsFromModule(package) has loaded tests for us.
return tests, False
return tests, True
finally:
self._loading_packages.discard(name)
else:
return None, False
defaultTestLoader = TestLoader()
def _makeLoader(prefix, sortUsing, suiteClass=None):
loader = TestLoader()
loader.sortTestMethodsUsing = sortUsing
loader.testMethodPrefix = prefix
if suiteClass:
loader.suiteClass = suiteClass
return loader
def getTestCaseNames(testCaseClass, prefix, sortUsing=util.three_way_cmp):
return _makeLoader(prefix, sortUsing).getTestCaseNames(testCaseClass)
def makeSuite(testCaseClass, prefix='test', sortUsing=util.three_way_cmp,
suiteClass=suite.TestSuite):
return _makeLoader(prefix, sortUsing, suiteClass).loadTestsFromTestCase(
testCaseClass)
def findTestCases(module, prefix='test', sortUsing=util.three_way_cmp,
suiteClass=suite.TestSuite):
return _makeLoader(prefix, sortUsing, suiteClass).loadTestsFromModule(\
module)
| 22,410 | 511 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/runner.py | """Running tests"""
import sys
import time
import warnings
from . import result
from .signals import registerResult
__unittest = True
class _WritelnDecorator(object):
"""Used to decorate file-like objects with a handy 'writeln' method"""
def __init__(self,stream):
self.stream = stream
def __getattr__(self, attr):
if attr in ('stream', '__getstate__'):
raise AttributeError(attr)
return getattr(self.stream,attr)
def writeln(self, arg=None):
if arg:
self.write(arg)
self.write('\n') # text-mode streams translate to \r\n if needed
class TextTestResult(result.TestResult):
"""A test result class that can print formatted text results to a stream.
Used by TextTestRunner.
"""
separator1 = '=' * 70
separator2 = '-' * 70
def __init__(self, stream, descriptions, verbosity):
super(TextTestResult, self).__init__(stream, descriptions, verbosity)
self.stream = stream
self.showAll = verbosity > 1
self.dots = verbosity == 1
self.descriptions = descriptions
def getDescription(self, test):
doc_first_line = test.shortDescription()
if self.descriptions and doc_first_line:
return '\n'.join((str(test), doc_first_line))
else:
return str(test)
def startTest(self, test):
super(TextTestResult, self).startTest(test)
if self.showAll:
self.stream.write(self.getDescription(test))
self.stream.write(" ... ")
self.stream.flush()
def addSuccess(self, test):
super(TextTestResult, self).addSuccess(test)
if self.showAll:
self.stream.writeln("ok")
elif self.dots:
self.stream.write('.')
self.stream.flush()
def addError(self, test, err):
super(TextTestResult, self).addError(test, err)
if self.showAll:
self.stream.writeln("ERROR")
elif self.dots:
self.stream.write('E')
self.stream.flush()
def addFailure(self, test, err):
super(TextTestResult, self).addFailure(test, err)
if self.showAll:
self.stream.writeln("FAIL")
elif self.dots:
self.stream.write('F')
self.stream.flush()
def addSkip(self, test, reason):
super(TextTestResult, self).addSkip(test, reason)
if self.showAll:
self.stream.writeln("skipped {0!r}".format(reason))
elif self.dots:
self.stream.write("s")
self.stream.flush()
def addExpectedFailure(self, test, err):
super(TextTestResult, self).addExpectedFailure(test, err)
if self.showAll:
self.stream.writeln("expected failure")
elif self.dots:
self.stream.write("x")
self.stream.flush()
def addUnexpectedSuccess(self, test):
super(TextTestResult, self).addUnexpectedSuccess(test)
if self.showAll:
self.stream.writeln("unexpected success")
elif self.dots:
self.stream.write("u")
self.stream.flush()
def printErrors(self):
if self.dots or self.showAll:
self.stream.writeln()
self.printErrorList('ERROR', self.errors)
self.printErrorList('FAIL', self.failures)
def printErrorList(self, flavour, errors):
for test, err in errors:
self.stream.writeln(self.separator1)
self.stream.writeln("%s: %s" % (flavour,self.getDescription(test)))
self.stream.writeln(self.separator2)
self.stream.writeln("%s" % err)
class TextTestRunner(object):
"""A test runner class that displays results in textual form.
It prints out the names of tests as they are run, errors as they
occur, and a summary of the results at the end of the test run.
"""
resultclass = TextTestResult
def __init__(self, stream=None, descriptions=True, verbosity=1,
failfast=False, buffer=False, resultclass=None, warnings=None,
*, tb_locals=False):
"""Construct a TextTestRunner.
Subclasses should accept **kwargs to ensure compatibility as the
interface changes.
"""
if stream is None:
stream = sys.stderr
self.stream = _WritelnDecorator(stream)
self.descriptions = descriptions
self.verbosity = verbosity
self.failfast = failfast
self.buffer = buffer
self.tb_locals = tb_locals
self.warnings = warnings
if resultclass is not None:
self.resultclass = resultclass
def _makeResult(self):
return self.resultclass(self.stream, self.descriptions, self.verbosity)
def run(self, test):
"Run the given test case or test suite."
result = self._makeResult()
registerResult(result)
result.failfast = self.failfast
result.buffer = self.buffer
result.tb_locals = self.tb_locals
with warnings.catch_warnings():
if self.warnings:
# if self.warnings is set, use it to filter all the warnings
warnings.simplefilter(self.warnings)
# if the filter is 'default' or 'always', special-case the
# warnings from the deprecated unittest methods to show them
# no more than once per module, because they can be fairly
# noisy. The -Wd and -Wa flags can be used to bypass this
# only when self.warnings is None.
if self.warnings in ['default', 'always']:
warnings.filterwarnings('module',
category=DeprecationWarning,
message=r'Please use assert\w+ instead.')
startTime = time.time()
startTestRun = getattr(result, 'startTestRun', None)
if startTestRun is not None:
startTestRun()
try:
test(result)
finally:
stopTestRun = getattr(result, 'stopTestRun', None)
if stopTestRun is not None:
stopTestRun()
stopTime = time.time()
timeTaken = stopTime - startTime
result.printErrors()
if hasattr(result, 'separator2'):
self.stream.writeln(result.separator2)
run = result.testsRun
self.stream.writeln("Ran %d test%s in %.3fs" %
(run, run != 1 and "s" or "", timeTaken))
self.stream.writeln()
expectedFails = unexpectedSuccesses = skipped = 0
try:
results = map(len, (result.expectedFailures,
result.unexpectedSuccesses,
result.skipped))
except AttributeError:
pass
else:
expectedFails, unexpectedSuccesses, skipped = results
infos = []
if not result.wasSuccessful():
self.stream.write("FAILED")
failed, errored = len(result.failures), len(result.errors)
if failed:
infos.append("failures=%d" % failed)
if errored:
infos.append("errors=%d" % errored)
else:
self.stream.write("OK")
if skipped:
infos.append("skipped=%d" % skipped)
if expectedFails:
infos.append("expected failures=%d" % expectedFails)
if unexpectedSuccesses:
infos.append("unexpected successes=%d" % unexpectedSuccesses)
if infos:
self.stream.writeln(" (%s)" % (", ".join(infos),))
else:
self.stream.write("\n")
return result
| 7,751 | 222 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/_main.py | """Unittest main program"""
import sys
import argparse
import os
from . import loader, runner
from .signals import installHandler
__unittest = True
MAIN_EXAMPLES = """\
Examples:
%(prog)s test_module - run tests from test_module
%(prog)s module.TestClass - run tests from module.TestClass
%(prog)s module.Class.test_method - run specified test method
%(prog)s path/to/test_file.py - run tests from test_file.py
"""
MODULE_EXAMPLES = """\
Examples:
%(prog)s - run default set of tests
%(prog)s MyTestSuite - run suite 'MyTestSuite'
%(prog)s MyTestCase.testSomething - run MyTestCase.testSomething
%(prog)s MyTestCase - run all 'test*' test methods
in MyTestCase
"""
def _convert_name(name):
# on Linux / Mac OS X 'foo.PY' is not importable, but on
# Windows it is. Simpler to do a case insensitive match
# a better check would be to check that the name is a
# valid Python module name.
if os.path.isfile(name) and name.lower().endswith('.py'):
if os.path.isabs(name):
rel_path = os.path.relpath(name, os.getcwd())
if os.path.isabs(rel_path) or rel_path.startswith(os.pardir):
return name
name = rel_path
# on Windows both '\' and '/' are used as path
# separators. Better to replace both than rely on os.path.sep
return name[:-3].replace('\\', '.').replace('/', '.')
return name
def _convert_names(names):
return [_convert_name(name) for name in names]
class TestProgram(object):
"""A command-line program that runs a set of tests; this is primarily
for making test modules conveniently executable.
"""
# defaults for testing
module=None
verbosity = 1
failfast = catchbreak = buffer = progName = warnings = None
_discovery_parser = None
def __init__(self, module='__main__', defaultTest=None, argv=None,
testRunner=None, testLoader=loader.defaultTestLoader,
exit=True, verbosity=1, failfast=None, catchbreak=None,
buffer=None, warnings=None, *, tb_locals=False):
if isinstance(module, str):
self.module = __import__(module)
for part in module.split('.')[1:]:
self.module = getattr(self.module, part)
else:
self.module = module
if argv is None:
argv = sys.argv
self.exit = exit
self.failfast = failfast
self.catchbreak = catchbreak
self.verbosity = verbosity
self.buffer = buffer
self.tb_locals = tb_locals
if warnings is None and not sys.warnoptions:
# even if DeprecationWarnings are ignored by default
# print them anyway unless other warnings settings are
# specified by the warnings arg or the -W python flag
self.warnings = 'default'
else:
# here self.warnings is set either to the value passed
# to the warnings args or to None.
# If the user didn't pass a value self.warnings will
# be None. This means that the behavior is unchanged
# and depends on the values passed to -W.
self.warnings = warnings
self.defaultTest = defaultTest
self.testRunner = testRunner
self.testLoader = testLoader
self.progName = os.path.basename(argv[0])
self.parseArgs(argv)
self.runTests()
def usageExit(self, msg=None):
if msg:
print(msg)
if self._discovery_parser is None:
self._initArgParsers()
self._print_help()
sys.exit(2)
def _print_help(self, *args, **kwargs):
if self.module is None:
print(self._main_parser.format_help())
print(MAIN_EXAMPLES % {'prog': self.progName})
self._discovery_parser.print_help()
else:
print(self._main_parser.format_help())
print(MODULE_EXAMPLES % {'prog': self.progName})
def parseArgs(self, argv):
self._initArgParsers()
if self.module is None:
if len(argv) > 1 and argv[1].lower() == 'discover':
self._do_discovery(argv[2:])
return
self._main_parser.parse_args(argv[1:], self)
if not self.tests:
# this allows "python -m unittest -v" to still work for
# test discovery.
self._do_discovery([])
return
else:
self._main_parser.parse_args(argv[1:], self)
if self.tests:
self.testNames = _convert_names(self.tests)
if __name__ == '__main__':
# to support python -m unittest ...
self.module = None
elif self.defaultTest is None:
# createTests will load tests from self.module
self.testNames = None
elif isinstance(self.defaultTest, str):
self.testNames = (self.defaultTest,)
else:
self.testNames = list(self.defaultTest)
self.createTests()
def createTests(self):
if self.testNames is None:
self.test = self.testLoader.loadTestsFromModule(self.module)
else:
self.test = self.testLoader.loadTestsFromNames(self.testNames,
self.module)
def _initArgParsers(self):
parent_parser = self._getParentArgParser()
self._main_parser = self._getMainArgParser(parent_parser)
self._discovery_parser = self._getDiscoveryArgParser(parent_parser)
def _getParentArgParser(self):
parser = argparse.ArgumentParser(add_help=False)
parser.add_argument('-v', '--verbose', dest='verbosity',
action='store_const', const=2,
help='Verbose output')
parser.add_argument('-q', '--quiet', dest='verbosity',
action='store_const', const=0,
help='Quiet output')
parser.add_argument('--locals', dest='tb_locals',
action='store_true',
help='Show local variables in tracebacks')
if self.failfast is None:
parser.add_argument('-f', '--failfast', dest='failfast',
action='store_true',
help='Stop on first fail or error')
self.failfast = False
if self.catchbreak is None:
parser.add_argument('-c', '--catch', dest='catchbreak',
action='store_true',
help='Catch Ctrl-C and display results so far')
self.catchbreak = False
if self.buffer is None:
parser.add_argument('-b', '--buffer', dest='buffer',
action='store_true',
help='Buffer stdout and stderr during tests')
self.buffer = False
return parser
def _getMainArgParser(self, parent):
parser = argparse.ArgumentParser(parents=[parent])
parser.prog = self.progName
parser.print_help = self._print_help
parser.add_argument('tests', nargs='*',
help='a list of any number of test modules, '
'classes and test methods.')
return parser
def _getDiscoveryArgParser(self, parent):
parser = argparse.ArgumentParser(parents=[parent])
parser.prog = '%s discover' % self.progName
parser.epilog = ('For test discovery all test modules must be '
'importable from the top level directory of the '
'project.')
parser.add_argument('-s', '--start-directory', dest='start',
help="Directory to start discovery ('.' default)")
parser.add_argument('-p', '--pattern', dest='pattern',
help="Pattern to match tests ('test*.py' default)")
parser.add_argument('-t', '--top-level-directory', dest='top',
help='Top level directory of project (defaults to '
'start directory)')
for arg in ('start', 'pattern', 'top'):
parser.add_argument(arg, nargs='?',
default=argparse.SUPPRESS,
help=argparse.SUPPRESS)
return parser
def _do_discovery(self, argv, Loader=None):
self.start = '.'
self.pattern = 'test*.py'
self.top = None
if argv is not None:
# handle command line args for test discovery
if self._discovery_parser is None:
# for testing
self._initArgParsers()
self._discovery_parser.parse_args(argv, self)
loader = self.testLoader if Loader is None else Loader()
self.test = loader.discover(self.start, self.pattern, self.top)
def runTests(self):
if self.catchbreak:
installHandler()
if self.testRunner is None:
self.testRunner = runner.TextTestRunner
if isinstance(self.testRunner, type):
try:
try:
testRunner = self.testRunner(verbosity=self.verbosity,
failfast=self.failfast,
buffer=self.buffer,
warnings=self.warnings,
tb_locals=self.tb_locals)
except TypeError:
# didn't accept the tb_locals argument
testRunner = self.testRunner(verbosity=self.verbosity,
failfast=self.failfast,
buffer=self.buffer,
warnings=self.warnings)
except TypeError:
# didn't accept the verbosity, buffer or failfast arguments
testRunner = self.testRunner()
else:
# it is assumed to be a TestRunner instance
testRunner = self.testRunner
self.result = testRunner.run(self.test)
if self.exit:
sys.exit(not self.result.wasSuccessful())
main = TestProgram
| 10,552 | 261 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/__main__.py | """Main entry point"""
import sys
if sys.argv[0].endswith("__main__.py"):
import os.path
# We change sys.argv[0] to make help message more useful
# use executable without path, unquoted
# (it's just a hint anyway)
# (if you have spaces in your executable you get what you deserve!)
executable = os.path.basename(sys.executable)
sys.argv[0] = executable + " -m unittest"
del os
__unittest = True
from ._main import main, TestProgram
main(module=None)
| 486 | 19 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/mock.py | # mock.py
# Test tools for mocking and patching.
# Maintained by Michael Foord
# Backport for other versions of Python available from
# https://pypi.org/project/mock
__all__ = (
'Mock',
'MagicMock',
'patch',
'sentinel',
'DEFAULT',
'ANY',
'call',
'create_autospec',
'FILTER_DIR',
'NonCallableMock',
'NonCallableMagicMock',
'mock_open',
'PropertyMock',
)
__version__ = '1.0'
import inspect
import pprint
import sys
import builtins
from types import ModuleType
from functools import wraps, partial
_builtins = {name for name in dir(builtins) if not name.startswith('_')}
BaseExceptions = (BaseException,)
FILTER_DIR = True
# Workaround for issue #12370
# Without this, the __class__ properties wouldn't be set correctly
_safe_super = super
def _is_instance_mock(obj):
# can't use isinstance on Mock objects because they override __class__
# The base class for all mocks is NonCallableMock
return issubclass(type(obj), NonCallableMock)
def _is_exception(obj):
return (
isinstance(obj, BaseExceptions) or
isinstance(obj, type) and issubclass(obj, BaseExceptions)
)
def _get_signature_object(func, as_instance, eat_self):
"""
Given an arbitrary, possibly callable object, try to create a suitable
signature object.
Return a (reduced func, signature) tuple, or None.
"""
if isinstance(func, type) and not as_instance:
# If it's a type and should be modelled as a type, use __init__.
try:
func = func.__init__
except AttributeError:
return None
# Skip the `self` argument in __init__
eat_self = True
elif not isinstance(func, FunctionTypes):
# If we really want to model an instance of the passed type,
# __call__ should be looked up, not __init__.
try:
func = func.__call__
except AttributeError:
return None
if eat_self:
sig_func = partial(func, None)
else:
sig_func = func
try:
return func, inspect.signature(sig_func)
except ValueError:
# Certain callable types are not supported by inspect.signature()
return None
def _check_signature(func, mock, skipfirst, instance=False):
sig = _get_signature_object(func, instance, skipfirst)
if sig is None:
return
func, sig = sig
def checksig(_mock_self, *args, **kwargs):
sig.bind(*args, **kwargs)
_copy_func_details(func, checksig)
type(mock)._mock_check_sig = checksig
def _copy_func_details(func, funcopy):
funcopy.__name__ = func.__name__
funcopy.__doc__ = func.__doc__
try:
funcopy.__text_signature__ = func.__text_signature__
except AttributeError:
pass
# we explicitly don't copy func.__dict__ into this copy as it would
# expose original attributes that should be mocked
try:
funcopy.__module__ = func.__module__
except AttributeError:
pass
try:
funcopy.__defaults__ = func.__defaults__
except AttributeError:
pass
try:
funcopy.__kwdefaults__ = func.__kwdefaults__
except AttributeError:
pass
def _callable(obj):
if isinstance(obj, type):
return True
if getattr(obj, '__call__', None) is not None:
return True
return False
def _is_list(obj):
# checks for list or tuples
# XXXX badly named!
return type(obj) in (list, tuple)
def _instance_callable(obj):
"""Given an object, return True if the object is callable.
For classes, return True if instances would be callable."""
if not isinstance(obj, type):
# already an instance
return getattr(obj, '__call__', None) is not None
# *could* be broken by a class overriding __mro__ or __dict__ via
# a metaclass
for base in (obj,) + obj.__mro__:
if base.__dict__.get('__call__') is not None:
return True
return False
def _set_signature(mock, original, instance=False):
# creates a function with signature (*args, **kwargs) that delegates to a
# mock. It still does signature checking by calling a lambda with the same
# signature as the original.
if not _callable(original):
return
skipfirst = isinstance(original, type)
result = _get_signature_object(original, instance, skipfirst)
if result is None:
return mock
func, sig = result
def checksig(*args, **kwargs):
sig.bind(*args, **kwargs)
_copy_func_details(func, checksig)
name = original.__name__
if not name.isidentifier():
name = 'funcopy'
context = {'_checksig_': checksig, 'mock': mock}
src = """def %s(*args, **kwargs):
_checksig_(*args, **kwargs)
return mock(*args, **kwargs)""" % name
exec (src, context)
funcopy = context[name]
_setup_func(funcopy, mock)
return funcopy
def _setup_func(funcopy, mock):
funcopy.mock = mock
# can't use isinstance with mocks
if not _is_instance_mock(mock):
return
def assert_called_with(*args, **kwargs):
return mock.assert_called_with(*args, **kwargs)
def assert_called(*args, **kwargs):
return mock.assert_called(*args, **kwargs)
def assert_not_called(*args, **kwargs):
return mock.assert_not_called(*args, **kwargs)
def assert_called_once(*args, **kwargs):
return mock.assert_called_once(*args, **kwargs)
def assert_called_once_with(*args, **kwargs):
return mock.assert_called_once_with(*args, **kwargs)
def assert_has_calls(*args, **kwargs):
return mock.assert_has_calls(*args, **kwargs)
def assert_any_call(*args, **kwargs):
return mock.assert_any_call(*args, **kwargs)
def reset_mock():
funcopy.method_calls = _CallList()
funcopy.mock_calls = _CallList()
mock.reset_mock()
ret = funcopy.return_value
if _is_instance_mock(ret) and not ret is mock:
ret.reset_mock()
funcopy.called = False
funcopy.call_count = 0
funcopy.call_args = None
funcopy.call_args_list = _CallList()
funcopy.method_calls = _CallList()
funcopy.mock_calls = _CallList()
funcopy.return_value = mock.return_value
funcopy.side_effect = mock.side_effect
funcopy._mock_children = mock._mock_children
funcopy.assert_called_with = assert_called_with
funcopy.assert_called_once_with = assert_called_once_with
funcopy.assert_has_calls = assert_has_calls
funcopy.assert_any_call = assert_any_call
funcopy.reset_mock = reset_mock
funcopy.assert_called = assert_called
funcopy.assert_not_called = assert_not_called
funcopy.assert_called_once = assert_called_once
mock._mock_delegate = funcopy
def _is_magic(name):
return '__%s__' % name[2:-2] == name
class _SentinelObject(object):
"A unique, named, sentinel object."
def __init__(self, name):
self.name = name
def __repr__(self):
return 'sentinel.%s' % self.name
class _Sentinel(object):
"""Access attributes to return a named object, usable as a sentinel."""
def __init__(self):
self._sentinels = {}
def __getattr__(self, name):
if name == '__bases__':
# Without this help(unittest.mock) raises an exception
raise AttributeError
return self._sentinels.setdefault(name, _SentinelObject(name))
sentinel = _Sentinel()
DEFAULT = sentinel.DEFAULT
_missing = sentinel.MISSING
_deleted = sentinel.DELETED
def _copy(value):
if type(value) in (dict, list, tuple, set):
return type(value)(value)
return value
_allowed_names = {
'return_value', '_mock_return_value', 'side_effect',
'_mock_side_effect', '_mock_parent', '_mock_new_parent',
'_mock_name', '_mock_new_name'
}
def _delegating_property(name):
_allowed_names.add(name)
_the_name = '_mock_' + name
def _get(self, name=name, _the_name=_the_name):
sig = self._mock_delegate
if sig is None:
return getattr(self, _the_name)
return getattr(sig, name)
def _set(self, value, name=name, _the_name=_the_name):
sig = self._mock_delegate
if sig is None:
self.__dict__[_the_name] = value
else:
setattr(sig, name, value)
return property(_get, _set)
class _CallList(list):
def __contains__(self, value):
if not isinstance(value, list):
return list.__contains__(self, value)
len_value = len(value)
len_self = len(self)
if len_value > len_self:
return False
for i in range(0, len_self - len_value + 1):
sub_list = self[i:i+len_value]
if sub_list == value:
return True
return False
def __repr__(self):
return pprint.pformat(list(self))
def _check_and_set_parent(parent, value, name, new_name):
if not _is_instance_mock(value):
return False
if ((value._mock_name or value._mock_new_name) or
(value._mock_parent is not None) or
(value._mock_new_parent is not None)):
return False
_parent = parent
while _parent is not None:
# setting a mock (value) as a child or return value of itself
# should not modify the mock
if _parent is value:
return False
_parent = _parent._mock_new_parent
if new_name:
value._mock_new_parent = parent
value._mock_new_name = new_name
if name:
value._mock_parent = parent
value._mock_name = name
return True
# Internal class to identify if we wrapped an iterator object or not.
class _MockIter(object):
def __init__(self, obj):
self.obj = iter(obj)
def __iter__(self):
return self
def __next__(self):
return next(self.obj)
class Base(object):
_mock_return_value = DEFAULT
_mock_side_effect = None
def __init__(self, *args, **kwargs):
pass
class NonCallableMock(Base):
"""A non-callable version of `Mock`"""
def __new__(cls, *args, **kw):
# every instance has its own class
# so we can create magic methods on the
# class without stomping on other mocks
new = type(cls.__name__, (cls,), {'__doc__': cls.__doc__})
instance = object.__new__(new)
return instance
def __init__(
self, spec=None, wraps=None, name=None, spec_set=None,
parent=None, _spec_state=None, _new_name='', _new_parent=None,
_spec_as_instance=False, _eat_self=None, unsafe=False, **kwargs
):
if _new_parent is None:
_new_parent = parent
__dict__ = self.__dict__
__dict__['_mock_parent'] = parent
__dict__['_mock_name'] = name
__dict__['_mock_new_name'] = _new_name
__dict__['_mock_new_parent'] = _new_parent
if spec_set is not None:
spec = spec_set
spec_set = True
if _eat_self is None:
_eat_self = parent is not None
self._mock_add_spec(spec, spec_set, _spec_as_instance, _eat_self)
__dict__['_mock_children'] = {}
__dict__['_mock_wraps'] = wraps
__dict__['_mock_delegate'] = None
__dict__['_mock_called'] = False
__dict__['_mock_call_args'] = None
__dict__['_mock_call_count'] = 0
__dict__['_mock_call_args_list'] = _CallList()
__dict__['_mock_mock_calls'] = _CallList()
__dict__['method_calls'] = _CallList()
__dict__['_mock_unsafe'] = unsafe
if kwargs:
self.configure_mock(**kwargs)
_safe_super(NonCallableMock, self).__init__(
spec, wraps, name, spec_set, parent,
_spec_state
)
def attach_mock(self, mock, attribute):
"""
Attach a mock as an attribute of this one, replacing its name and
parent. Calls to the attached mock will be recorded in the
`method_calls` and `mock_calls` attributes of this one."""
mock._mock_parent = None
mock._mock_new_parent = None
mock._mock_name = ''
mock._mock_new_name = None
setattr(self, attribute, mock)
def mock_add_spec(self, spec, spec_set=False):
"""Add a spec to a mock. `spec` can either be an object or a
list of strings. Only attributes on the `spec` can be fetched as
attributes from the mock.
If `spec_set` is True then only attributes on the spec can be set."""
self._mock_add_spec(spec, spec_set)
def _mock_add_spec(self, spec, spec_set, _spec_as_instance=False,
_eat_self=False):
_spec_class = None
_spec_signature = None
if spec is not None and not _is_list(spec):
if isinstance(spec, type):
_spec_class = spec
else:
_spec_class = _get_class(spec)
res = _get_signature_object(spec,
_spec_as_instance, _eat_self)
_spec_signature = res and res[1]
spec = dir(spec)
__dict__ = self.__dict__
__dict__['_spec_class'] = _spec_class
__dict__['_spec_set'] = spec_set
__dict__['_spec_signature'] = _spec_signature
__dict__['_mock_methods'] = spec
def __get_return_value(self):
ret = self._mock_return_value
if self._mock_delegate is not None:
ret = self._mock_delegate.return_value
if ret is DEFAULT:
ret = self._get_child_mock(
_new_parent=self, _new_name='()'
)
self.return_value = ret
return ret
def __set_return_value(self, value):
if self._mock_delegate is not None:
self._mock_delegate.return_value = value
else:
self._mock_return_value = value
_check_and_set_parent(self, value, None, '()')
__return_value_doc = "The value to be returned when the mock is called."
return_value = property(__get_return_value, __set_return_value,
__return_value_doc)
@property
def __class__(self):
if self._spec_class is None:
return type(self)
return self._spec_class
called = _delegating_property('called')
call_count = _delegating_property('call_count')
call_args = _delegating_property('call_args')
call_args_list = _delegating_property('call_args_list')
mock_calls = _delegating_property('mock_calls')
def __get_side_effect(self):
delegated = self._mock_delegate
if delegated is None:
return self._mock_side_effect
sf = delegated.side_effect
if (sf is not None and not callable(sf)
and not isinstance(sf, _MockIter) and not _is_exception(sf)):
sf = _MockIter(sf)
delegated.side_effect = sf
return sf
def __set_side_effect(self, value):
value = _try_iter(value)
delegated = self._mock_delegate
if delegated is None:
self._mock_side_effect = value
else:
delegated.side_effect = value
side_effect = property(__get_side_effect, __set_side_effect)
def reset_mock(self, visited=None,*, return_value=False, side_effect=False):
"Restore the mock object to its initial state."
if visited is None:
visited = []
if id(self) in visited:
return
visited.append(id(self))
self.called = False
self.call_args = None
self.call_count = 0
self.mock_calls = _CallList()
self.call_args_list = _CallList()
self.method_calls = _CallList()
if return_value:
self._mock_return_value = DEFAULT
if side_effect:
self._mock_side_effect = None
for child in self._mock_children.values():
if isinstance(child, _SpecState) or child is _deleted:
continue
child.reset_mock(visited)
ret = self._mock_return_value
if _is_instance_mock(ret) and ret is not self:
ret.reset_mock(visited)
def configure_mock(self, **kwargs):
"""Set attributes on the mock through keyword arguments.
Attributes plus return values and side effects can be set on child
mocks using standard dot notation and unpacking a dictionary in the
method call:
>>> attrs = {'method.return_value': 3, 'other.side_effect': KeyError}
>>> mock.configure_mock(**attrs)"""
for arg, val in sorted(kwargs.items(),
# we sort on the number of dots so that
# attributes are set before we set attributes on
# attributes
key=lambda entry: entry[0].count('.')):
args = arg.split('.')
final = args.pop()
obj = self
for entry in args:
obj = getattr(obj, entry)
setattr(obj, final, val)
def __getattr__(self, name):
if name in {'_mock_methods', '_mock_unsafe'}:
raise AttributeError(name)
elif self._mock_methods is not None:
if name not in self._mock_methods or name in _all_magics:
raise AttributeError("Mock object has no attribute %r" % name)
elif _is_magic(name):
raise AttributeError(name)
if not self._mock_unsafe:
if name.startswith(('assert', 'assret')):
raise AttributeError(name)
result = self._mock_children.get(name)
if result is _deleted:
raise AttributeError(name)
elif result is None:
wraps = None
if self._mock_wraps is not None:
# XXXX should we get the attribute without triggering code
# execution?
wraps = getattr(self._mock_wraps, name)
result = self._get_child_mock(
parent=self, name=name, wraps=wraps, _new_name=name,
_new_parent=self
)
self._mock_children[name] = result
elif isinstance(result, _SpecState):
result = create_autospec(
result.spec, result.spec_set, result.instance,
result.parent, result.name
)
self._mock_children[name] = result
return result
def __repr__(self):
_name_list = [self._mock_new_name]
_parent = self._mock_new_parent
last = self
dot = '.'
if _name_list == ['()']:
dot = ''
seen = set()
while _parent is not None:
last = _parent
_name_list.append(_parent._mock_new_name + dot)
dot = '.'
if _parent._mock_new_name == '()':
dot = ''
_parent = _parent._mock_new_parent
# use ids here so as not to call __hash__ on the mocks
if id(_parent) in seen:
break
seen.add(id(_parent))
_name_list = list(reversed(_name_list))
_first = last._mock_name or 'mock'
if len(_name_list) > 1:
if _name_list[1] not in ('()', '().'):
_first += '.'
_name_list[0] = _first
name = ''.join(_name_list)
name_string = ''
if name not in ('mock', 'mock.'):
name_string = ' name=%r' % name
spec_string = ''
if self._spec_class is not None:
spec_string = ' spec=%r'
if self._spec_set:
spec_string = ' spec_set=%r'
spec_string = spec_string % self._spec_class.__name__
return "<%s%s%s id='%s'>" % (
type(self).__name__,
name_string,
spec_string,
id(self)
)
def __dir__(self):
"""Filter the output of `dir(mock)` to only useful members."""
if not FILTER_DIR:
return object.__dir__(self)
extras = self._mock_methods or []
from_type = dir(type(self))
from_dict = list(self.__dict__)
from_type = [e for e in from_type if not e.startswith('_')]
from_dict = [e for e in from_dict if not e.startswith('_') or
_is_magic(e)]
return sorted(set(extras + from_type + from_dict +
list(self._mock_children)))
def __setattr__(self, name, value):
if name in _allowed_names:
# property setters go through here
return object.__setattr__(self, name, value)
elif (self._spec_set and self._mock_methods is not None and
name not in self._mock_methods and
name not in self.__dict__):
raise AttributeError("Mock object has no attribute '%s'" % name)
elif name in _unsupported_magics:
msg = 'Attempting to set unsupported magic method %r.' % name
raise AttributeError(msg)
elif name in _all_magics:
if self._mock_methods is not None and name not in self._mock_methods:
raise AttributeError("Mock object has no attribute '%s'" % name)
if not _is_instance_mock(value):
setattr(type(self), name, _get_method(name, value))
original = value
value = lambda *args, **kw: original(self, *args, **kw)
else:
# only set _new_name and not name so that mock_calls is tracked
# but not method calls
_check_and_set_parent(self, value, None, name)
setattr(type(self), name, value)
self._mock_children[name] = value
elif name == '__class__':
self._spec_class = value
return
else:
if _check_and_set_parent(self, value, name, name):
self._mock_children[name] = value
return object.__setattr__(self, name, value)
def __delattr__(self, name):
if name in _all_magics and name in type(self).__dict__:
delattr(type(self), name)
if name not in self.__dict__:
# for magic methods that are still MagicProxy objects and
# not set on the instance itself
return
if name in self.__dict__:
object.__delattr__(self, name)
obj = self._mock_children.get(name, _missing)
if obj is _deleted:
raise AttributeError(name)
if obj is not _missing:
del self._mock_children[name]
self._mock_children[name] = _deleted
def _format_mock_call_signature(self, args, kwargs):
name = self._mock_name or 'mock'
return _format_call_signature(name, args, kwargs)
def _format_mock_failure_message(self, args, kwargs):
message = 'Expected call: %s\nActual call: %s'
expected_string = self._format_mock_call_signature(args, kwargs)
call_args = self.call_args
if len(call_args) == 3:
call_args = call_args[1:]
actual_string = self._format_mock_call_signature(*call_args)
return message % (expected_string, actual_string)
def _call_matcher(self, _call):
"""
Given a call (or simply an (args, kwargs) tuple), return a
comparison key suitable for matching with other calls.
This is a best effort method which relies on the spec's signature,
if available, or falls back on the arguments themselves.
"""
sig = self._spec_signature
if sig is not None:
if len(_call) == 2:
name = ''
args, kwargs = _call
else:
name, args, kwargs = _call
try:
return name, sig.bind(*args, **kwargs)
except TypeError as e:
return e.with_traceback(None)
else:
return _call
def assert_not_called(_mock_self):
"""assert that the mock was never called.
"""
self = _mock_self
if self.call_count != 0:
msg = ("Expected '%s' to not have been called. Called %s times." %
(self._mock_name or 'mock', self.call_count))
raise AssertionError(msg)
def assert_called(_mock_self):
"""assert that the mock was called at least once
"""
self = _mock_self
if self.call_count == 0:
msg = ("Expected '%s' to have been called." %
self._mock_name or 'mock')
raise AssertionError(msg)
def assert_called_once(_mock_self):
"""assert that the mock was called only once.
"""
self = _mock_self
if not self.call_count == 1:
msg = ("Expected '%s' to have been called once. Called %s times." %
(self._mock_name or 'mock', self.call_count))
raise AssertionError(msg)
def assert_called_with(_mock_self, *args, **kwargs):
"""assert that the mock was called with the specified arguments.
Raises an AssertionError if the args and keyword args passed in are
different to the last call to the mock."""
self = _mock_self
if self.call_args is None:
expected = self._format_mock_call_signature(args, kwargs)
raise AssertionError('Expected call: %s\nNot called' % (expected,))
def _error_message():
msg = self._format_mock_failure_message(args, kwargs)
return msg
expected = self._call_matcher((args, kwargs))
actual = self._call_matcher(self.call_args)
if expected != actual:
cause = expected if isinstance(expected, Exception) else None
raise AssertionError(_error_message()) from cause
def assert_called_once_with(_mock_self, *args, **kwargs):
"""assert that the mock was called exactly once and that that call was
with the specified arguments."""
self = _mock_self
if not self.call_count == 1:
msg = ("Expected '%s' to be called once. Called %s times." %
(self._mock_name or 'mock', self.call_count))
raise AssertionError(msg)
return self.assert_called_with(*args, **kwargs)
def assert_has_calls(self, calls, any_order=False):
"""assert the mock has been called with the specified calls.
The `mock_calls` list is checked for the calls.
If `any_order` is False (the default) then the calls must be
sequential. There can be extra calls before or after the
specified calls.
If `any_order` is True then the calls can be in any order, but
they must all appear in `mock_calls`."""
expected = [self._call_matcher(c) for c in calls]
cause = expected if isinstance(expected, Exception) else None
all_calls = _CallList(self._call_matcher(c) for c in self.mock_calls)
if not any_order:
if expected not in all_calls:
raise AssertionError(
'Calls not found.\nExpected: %r\n'
'Actual: %r' % (_CallList(calls), self.mock_calls)
) from cause
return
all_calls = list(all_calls)
not_found = []
for kall in expected:
try:
all_calls.remove(kall)
except ValueError:
not_found.append(kall)
if not_found:
raise AssertionError(
'%r not all found in call list' % (tuple(not_found),)
) from cause
def assert_any_call(self, *args, **kwargs):
"""assert the mock has been called with the specified arguments.
The assert passes if the mock has *ever* been called, unlike
`assert_called_with` and `assert_called_once_with` that only pass if
the call is the most recent one."""
expected = self._call_matcher((args, kwargs))
actual = [self._call_matcher(c) for c in self.call_args_list]
if expected not in actual:
cause = expected if isinstance(expected, Exception) else None
expected_string = self._format_mock_call_signature(args, kwargs)
raise AssertionError(
'%s call not found' % expected_string
) from cause
def _get_child_mock(self, **kw):
"""Create the child mocks for attributes and return value.
By default child mocks will be the same type as the parent.
Subclasses of Mock may want to override this to customize the way
child mocks are made.
For non-callable mocks the callable variant will be used (rather than
any custom subclass)."""
_type = type(self)
if not issubclass(_type, CallableMixin):
if issubclass(_type, NonCallableMagicMock):
klass = MagicMock
elif issubclass(_type, NonCallableMock) :
klass = Mock
else:
klass = _type.__mro__[1]
return klass(**kw)
def _try_iter(obj):
if obj is None:
return obj
if _is_exception(obj):
return obj
if _callable(obj):
return obj
try:
return iter(obj)
except TypeError:
# XXXX backwards compatibility
# but this will blow up on first call - so maybe we should fail early?
return obj
class CallableMixin(Base):
def __init__(self, spec=None, side_effect=None, return_value=DEFAULT,
wraps=None, name=None, spec_set=None, parent=None,
_spec_state=None, _new_name='', _new_parent=None, **kwargs):
self.__dict__['_mock_return_value'] = return_value
_safe_super(CallableMixin, self).__init__(
spec, wraps, name, spec_set, parent,
_spec_state, _new_name, _new_parent, **kwargs
)
self.side_effect = side_effect
def _mock_check_sig(self, *args, **kwargs):
# stub method that can be replaced with one with a specific signature
pass
def __call__(_mock_self, *args, **kwargs):
# can't use self in-case a function / method we are mocking uses self
# in the signature
_mock_self._mock_check_sig(*args, **kwargs)
return _mock_self._mock_call(*args, **kwargs)
def _mock_call(_mock_self, *args, **kwargs):
self = _mock_self
self.called = True
self.call_count += 1
# handle call_args
_call = _Call((args, kwargs), two=True)
self.call_args = _call
self.call_args_list.append(_call)
seen = set()
# initial stuff for method_calls:
do_method_calls = self._mock_parent is not None
method_call_name = self._mock_name
# initial stuff for mock_calls:
mock_call_name = self._mock_new_name
is_a_call = mock_call_name == '()'
self.mock_calls.append(_Call(('', args, kwargs)))
# follow up the chain of mocks:
_new_parent = self._mock_new_parent
while _new_parent is not None:
# handle method_calls:
if do_method_calls:
_new_parent.method_calls.append(_Call((method_call_name, args, kwargs)))
do_method_calls = _new_parent._mock_parent is not None
if do_method_calls:
method_call_name = _new_parent._mock_name + '.' + method_call_name
# handle mock_calls:
this_mock_call = _Call((mock_call_name, args, kwargs))
_new_parent.mock_calls.append(this_mock_call)
if _new_parent._mock_new_name:
if is_a_call:
dot = ''
else:
dot = '.'
is_a_call = _new_parent._mock_new_name == '()'
mock_call_name = _new_parent._mock_new_name + dot + mock_call_name
# follow the parental chain:
_new_parent = _new_parent._mock_new_parent
# check we're not in an infinite loop:
# ( use ids here so as not to call __hash__ on the mocks)
_new_parent_id = id(_new_parent)
if _new_parent_id in seen:
break
seen.add(_new_parent_id)
effect = self.side_effect
if effect is not None:
if _is_exception(effect):
raise effect
elif not _callable(effect):
result = next(effect)
if _is_exception(result):
raise result
else:
result = effect(*args, **kwargs)
if result is not DEFAULT:
return result
if self._mock_return_value is not DEFAULT:
return self.return_value
if self._mock_wraps is not None:
return self._mock_wraps(*args, **kwargs)
return self.return_value
class Mock(CallableMixin, NonCallableMock):
"""
Create a new `Mock` object. `Mock` takes several optional arguments
that specify the behaviour of the Mock object:
* `spec`: This can be either a list of strings or an existing object (a
class or instance) that acts as the specification for the mock object. If
you pass in an object then a list of strings is formed by calling dir on
the object (excluding unsupported magic attributes and methods). Accessing
any attribute not in this list will raise an `AttributeError`.
If `spec` is an object (rather than a list of strings) then
`mock.__class__` returns the class of the spec object. This allows mocks
to pass `isinstance` tests.
* `spec_set`: A stricter variant of `spec`. If used, attempting to *set*
or get an attribute on the mock that isn't on the object passed as
`spec_set` will raise an `AttributeError`.
* `side_effect`: A function to be called whenever the Mock is called. See
the `side_effect` attribute. Useful for raising exceptions or
dynamically changing return values. The function is called with the same
arguments as the mock, and unless it returns `DEFAULT`, the return
value of this function is used as the return value.
If `side_effect` is an iterable then each call to the mock will return
the next value from the iterable. If any of the members of the iterable
are exceptions they will be raised instead of returned.
* `return_value`: The value returned when the mock is called. By default
this is a new Mock (created on first access). See the
`return_value` attribute.
* `wraps`: Item for the mock object to wrap. If `wraps` is not None then
calling the Mock will pass the call through to the wrapped object
(returning the real result). Attribute access on the mock will return a
Mock object that wraps the corresponding attribute of the wrapped object
(so attempting to access an attribute that doesn't exist will raise an
`AttributeError`).
If the mock has an explicit `return_value` set then calls are not passed
to the wrapped object and the `return_value` is returned instead.
* `name`: If the mock has a name then it will be used in the repr of the
mock. This can be useful for debugging. The name is propagated to child
mocks.
Mocks can also be called with arbitrary keyword arguments. These will be
used to set attributes on the mock after it is created.
"""
def _dot_lookup(thing, comp, import_path):
try:
return getattr(thing, comp)
except AttributeError:
__import__(import_path)
return getattr(thing, comp)
def _importer(target):
components = target.split('.')
import_path = components.pop(0)
thing = __import__(import_path)
for comp in components:
import_path += ".%s" % comp
thing = _dot_lookup(thing, comp, import_path)
return thing
def _is_started(patcher):
# XXXX horrible
return hasattr(patcher, 'is_local')
class _patch(object):
attribute_name = None
_active_patches = []
def __init__(
self, getter, attribute, new, spec, create,
spec_set, autospec, new_callable, kwargs
):
if new_callable is not None:
if new is not DEFAULT:
raise ValueError(
"Cannot use 'new' and 'new_callable' together"
)
if autospec is not None:
raise ValueError(
"Cannot use 'autospec' and 'new_callable' together"
)
self.getter = getter
self.attribute = attribute
self.new = new
self.new_callable = new_callable
self.spec = spec
self.create = create
self.has_local = False
self.spec_set = spec_set
self.autospec = autospec
self.kwargs = kwargs
self.additional_patchers = []
def copy(self):
patcher = _patch(
self.getter, self.attribute, self.new, self.spec,
self.create, self.spec_set,
self.autospec, self.new_callable, self.kwargs
)
patcher.attribute_name = self.attribute_name
patcher.additional_patchers = [
p.copy() for p in self.additional_patchers
]
return patcher
def __call__(self, func):
if isinstance(func, type):
return self.decorate_class(func)
return self.decorate_callable(func)
def decorate_class(self, klass):
for attr in dir(klass):
if not attr.startswith(patch.TEST_PREFIX):
continue
attr_value = getattr(klass, attr)
if not hasattr(attr_value, "__call__"):
continue
patcher = self.copy()
setattr(klass, attr, patcher(attr_value))
return klass
def decorate_callable(self, func):
if hasattr(func, 'patchings'):
func.patchings.append(self)
return func
@wraps(func)
def patched(*args, **keywargs):
extra_args = []
entered_patchers = []
exc_info = tuple()
try:
for patching in patched.patchings:
arg = patching.__enter__()
entered_patchers.append(patching)
if patching.attribute_name is not None:
keywargs.update(arg)
elif patching.new is DEFAULT:
extra_args.append(arg)
args += tuple(extra_args)
return func(*args, **keywargs)
except:
if (patching not in entered_patchers and
_is_started(patching)):
# the patcher may have been started, but an exception
# raised whilst entering one of its additional_patchers
entered_patchers.append(patching)
# Pass the exception to __exit__
exc_info = sys.exc_info()
# re-raise the exception
raise
finally:
for patching in reversed(entered_patchers):
patching.__exit__(*exc_info)
patched.patchings = [self]
return patched
def get_original(self):
target = self.getter()
name = self.attribute
original = DEFAULT
local = False
try:
original = target.__dict__[name]
except (AttributeError, KeyError):
original = getattr(target, name, DEFAULT)
else:
local = True
if name in _builtins and isinstance(target, ModuleType):
self.create = True
if not self.create and original is DEFAULT:
raise AttributeError(
"%s does not have the attribute %r" % (target, name)
)
return original, local
def __enter__(self):
"""Perform the patch."""
new, spec, spec_set = self.new, self.spec, self.spec_set
autospec, kwargs = self.autospec, self.kwargs
new_callable = self.new_callable
self.target = self.getter()
# normalise False to None
if spec is False:
spec = None
if spec_set is False:
spec_set = None
if autospec is False:
autospec = None
if spec is not None and autospec is not None:
raise TypeError("Can't specify spec and autospec")
if ((spec is not None or autospec is not None) and
spec_set not in (True, None)):
raise TypeError("Can't provide explicit spec_set *and* spec or autospec")
original, local = self.get_original()
if new is DEFAULT and autospec is None:
inherit = False
if spec is True:
# set spec to the object we are replacing
spec = original
if spec_set is True:
spec_set = original
spec = None
elif spec is not None:
if spec_set is True:
spec_set = spec
spec = None
elif spec_set is True:
spec_set = original
if spec is not None or spec_set is not None:
if original is DEFAULT:
raise TypeError("Can't use 'spec' with create=True")
if isinstance(original, type):
# If we're patching out a class and there is a spec
inherit = True
Klass = MagicMock
_kwargs = {}
if new_callable is not None:
Klass = new_callable
elif spec is not None or spec_set is not None:
this_spec = spec
if spec_set is not None:
this_spec = spec_set
if _is_list(this_spec):
not_callable = '__call__' not in this_spec
else:
not_callable = not callable(this_spec)
if not_callable:
Klass = NonCallableMagicMock
if spec is not None:
_kwargs['spec'] = spec
if spec_set is not None:
_kwargs['spec_set'] = spec_set
# add a name to mocks
if (isinstance(Klass, type) and
issubclass(Klass, NonCallableMock) and self.attribute):
_kwargs['name'] = self.attribute
_kwargs.update(kwargs)
new = Klass(**_kwargs)
if inherit and _is_instance_mock(new):
# we can only tell if the instance should be callable if the
# spec is not a list
this_spec = spec
if spec_set is not None:
this_spec = spec_set
if (not _is_list(this_spec) and not
_instance_callable(this_spec)):
Klass = NonCallableMagicMock
_kwargs.pop('name')
new.return_value = Klass(_new_parent=new, _new_name='()',
**_kwargs)
elif autospec is not None:
# spec is ignored, new *must* be default, spec_set is treated
# as a boolean. Should we check spec is not None and that spec_set
# is a bool?
if new is not DEFAULT:
raise TypeError(
"autospec creates the mock for you. Can't specify "
"autospec and new."
)
if original is DEFAULT:
raise TypeError("Can't use 'autospec' with create=True")
spec_set = bool(spec_set)
if autospec is True:
autospec = original
new = create_autospec(autospec, spec_set=spec_set,
_name=self.attribute, **kwargs)
elif kwargs:
# can't set keyword args when we aren't creating the mock
# XXXX If new is a Mock we could call new.configure_mock(**kwargs)
raise TypeError("Can't pass kwargs to a mock we aren't creating")
new_attr = new
self.temp_original = original
self.is_local = local
setattr(self.target, self.attribute, new_attr)
if self.attribute_name is not None:
extra_args = {}
if self.new is DEFAULT:
extra_args[self.attribute_name] = new
for patching in self.additional_patchers:
arg = patching.__enter__()
if patching.new is DEFAULT:
extra_args.update(arg)
return extra_args
return new
def __exit__(self, *exc_info):
"""Undo the patch."""
if not _is_started(self):
raise RuntimeError('stop called on unstarted patcher')
if self.is_local and self.temp_original is not DEFAULT:
setattr(self.target, self.attribute, self.temp_original)
else:
delattr(self.target, self.attribute)
if not self.create and (not hasattr(self.target, self.attribute) or
self.attribute in ('__doc__', '__module__',
'__defaults__', '__annotations__',
'__kwdefaults__')):
# needed for proxy objects like django settings
setattr(self.target, self.attribute, self.temp_original)
del self.temp_original
del self.is_local
del self.target
for patcher in reversed(self.additional_patchers):
if _is_started(patcher):
patcher.__exit__(*exc_info)
def start(self):
"""Activate a patch, returning any created mock."""
result = self.__enter__()
self._active_patches.append(self)
return result
def stop(self):
"""Stop an active patch."""
try:
self._active_patches.remove(self)
except ValueError:
# If the patch hasn't been started this will fail
pass
return self.__exit__()
def _get_target(target):
try:
target, attribute = target.rsplit('.', 1)
except (TypeError, ValueError):
raise TypeError("Need a valid target to patch. You supplied: %r" %
(target,))
getter = lambda: _importer(target)
return getter, attribute
def _patch_object(
target, attribute, new=DEFAULT, spec=None,
create=False, spec_set=None, autospec=None,
new_callable=None, **kwargs
):
"""
patch the named member (`attribute`) on an object (`target`) with a mock
object.
`patch.object` can be used as a decorator, class decorator or a context
manager. Arguments `new`, `spec`, `create`, `spec_set`,
`autospec` and `new_callable` have the same meaning as for `patch`. Like
`patch`, `patch.object` takes arbitrary keyword arguments for configuring
the mock object it creates.
When used as a class decorator `patch.object` honours `patch.TEST_PREFIX`
for choosing which methods to wrap.
"""
getter = lambda: target
return _patch(
getter, attribute, new, spec, create,
spec_set, autospec, new_callable, kwargs
)
def _patch_multiple(target, spec=None, create=False, spec_set=None,
autospec=None, new_callable=None, **kwargs):
"""Perform multiple patches in a single call. It takes the object to be
patched (either as an object or a string to fetch the object by importing)
and keyword arguments for the patches::
with patch.multiple(settings, FIRST_PATCH='one', SECOND_PATCH='two'):
...
Use `DEFAULT` as the value if you want `patch.multiple` to create
mocks for you. In this case the created mocks are passed into a decorated
function by keyword, and a dictionary is returned when `patch.multiple` is
used as a context manager.
`patch.multiple` can be used as a decorator, class decorator or a context
manager. The arguments `spec`, `spec_set`, `create`,
`autospec` and `new_callable` have the same meaning as for `patch`. These
arguments will be applied to *all* patches done by `patch.multiple`.
When used as a class decorator `patch.multiple` honours `patch.TEST_PREFIX`
for choosing which methods to wrap.
"""
if type(target) is str:
getter = lambda: _importer(target)
else:
getter = lambda: target
if not kwargs:
raise ValueError(
'Must supply at least one keyword argument with patch.multiple'
)
# need to wrap in a list for python 3, where items is a view
items = list(kwargs.items())
attribute, new = items[0]
patcher = _patch(
getter, attribute, new, spec, create, spec_set,
autospec, new_callable, {}
)
patcher.attribute_name = attribute
for attribute, new in items[1:]:
this_patcher = _patch(
getter, attribute, new, spec, create, spec_set,
autospec, new_callable, {}
)
this_patcher.attribute_name = attribute
patcher.additional_patchers.append(this_patcher)
return patcher
def patch(
target, new=DEFAULT, spec=None, create=False,
spec_set=None, autospec=None, new_callable=None, **kwargs
):
"""
`patch` acts as a function decorator, class decorator or a context
manager. Inside the body of the function or with statement, the `target`
is patched with a `new` object. When the function/with statement exits
the patch is undone.
If `new` is omitted, then the target is replaced with a
`MagicMock`. If `patch` is used as a decorator and `new` is
omitted, the created mock is passed in as an extra argument to the
decorated function. If `patch` is used as a context manager the created
mock is returned by the context manager.
`target` should be a string in the form `'package.module.ClassName'`. The
`target` is imported and the specified object replaced with the `new`
object, so the `target` must be importable from the environment you are
calling `patch` from. The target is imported when the decorated function
is executed, not at decoration time.
The `spec` and `spec_set` keyword arguments are passed to the `MagicMock`
if patch is creating one for you.
In addition you can pass `spec=True` or `spec_set=True`, which causes
patch to pass in the object being mocked as the spec/spec_set object.
`new_callable` allows you to specify a different class, or callable object,
that will be called to create the `new` object. By default `MagicMock` is
used.
A more powerful form of `spec` is `autospec`. If you set `autospec=True`
then the mock will be created with a spec from the object being replaced.
All attributes of the mock will also have the spec of the corresponding
attribute of the object being replaced. Methods and functions being
mocked will have their arguments checked and will raise a `TypeError` if
they are called with the wrong signature. For mocks replacing a class,
their return value (the 'instance') will have the same spec as the class.
Instead of `autospec=True` you can pass `autospec=some_object` to use an
arbitrary object as the spec instead of the one being replaced.
By default `patch` will fail to replace attributes that don't exist. If
you pass in `create=True`, and the attribute doesn't exist, patch will
create the attribute for you when the patched function is called, and
delete it again afterwards. This is useful for writing tests against
attributes that your production code creates at runtime. It is off by
default because it can be dangerous. With it switched on you can write
passing tests against APIs that don't actually exist!
Patch can be used as a `TestCase` class decorator. It works by
decorating each test method in the class. This reduces the boilerplate
code when your test methods share a common patchings set. `patch` finds
tests by looking for method names that start with `patch.TEST_PREFIX`.
By default this is `test`, which matches the way `unittest` finds tests.
You can specify an alternative prefix by setting `patch.TEST_PREFIX`.
Patch can be used as a context manager, with the with statement. Here the
patching applies to the indented block after the with statement. If you
use "as" then the patched object will be bound to the name after the
"as"; very useful if `patch` is creating a mock object for you.
`patch` takes arbitrary keyword arguments. These will be passed to
the `Mock` (or `new_callable`) on construction.
`patch.dict(...)`, `patch.multiple(...)` and `patch.object(...)` are
available for alternate use-cases.
"""
getter, attribute = _get_target(target)
return _patch(
getter, attribute, new, spec, create,
spec_set, autospec, new_callable, kwargs
)
class _patch_dict(object):
"""
Patch a dictionary, or dictionary like object, and restore the dictionary
to its original state after the test.
`in_dict` can be a dictionary or a mapping like container. If it is a
mapping then it must at least support getting, setting and deleting items
plus iterating over keys.
`in_dict` can also be a string specifying the name of the dictionary, which
will then be fetched by importing it.
`values` can be a dictionary of values to set in the dictionary. `values`
can also be an iterable of `(key, value)` pairs.
If `clear` is True then the dictionary will be cleared before the new
values are set.
`patch.dict` can also be called with arbitrary keyword arguments to set
values in the dictionary::
with patch.dict('sys.modules', mymodule=Mock(), other_module=Mock()):
...
`patch.dict` can be used as a context manager, decorator or class
decorator. When used as a class decorator `patch.dict` honours
`patch.TEST_PREFIX` for choosing which methods to wrap.
"""
def __init__(self, in_dict, values=(), clear=False, **kwargs):
if isinstance(in_dict, str):
in_dict = _importer(in_dict)
self.in_dict = in_dict
# support any argument supported by dict(...) constructor
self.values = dict(values)
self.values.update(kwargs)
self.clear = clear
self._original = None
def __call__(self, f):
if isinstance(f, type):
return self.decorate_class(f)
@wraps(f)
def _inner(*args, **kw):
self._patch_dict()
try:
return f(*args, **kw)
finally:
self._unpatch_dict()
return _inner
def decorate_class(self, klass):
for attr in dir(klass):
attr_value = getattr(klass, attr)
if (attr.startswith(patch.TEST_PREFIX) and
hasattr(attr_value, "__call__")):
decorator = _patch_dict(self.in_dict, self.values, self.clear)
decorated = decorator(attr_value)
setattr(klass, attr, decorated)
return klass
def __enter__(self):
"""Patch the dict."""
self._patch_dict()
def _patch_dict(self):
values = self.values
in_dict = self.in_dict
clear = self.clear
try:
original = in_dict.copy()
except AttributeError:
# dict like object with no copy method
# must support iteration over keys
original = {}
for key in in_dict:
original[key] = in_dict[key]
self._original = original
if clear:
_clear_dict(in_dict)
try:
in_dict.update(values)
except AttributeError:
# dict like object with no update method
for key in values:
in_dict[key] = values[key]
def _unpatch_dict(self):
in_dict = self.in_dict
original = self._original
_clear_dict(in_dict)
try:
in_dict.update(original)
except AttributeError:
for key in original:
in_dict[key] = original[key]
def __exit__(self, *args):
"""Unpatch the dict."""
self._unpatch_dict()
return False
start = __enter__
stop = __exit__
def _clear_dict(in_dict):
try:
in_dict.clear()
except AttributeError:
keys = list(in_dict)
for key in keys:
del in_dict[key]
def _patch_stopall():
"""Stop all active patches. LIFO to unroll nested patches."""
for patch in reversed(_patch._active_patches):
patch.stop()
patch.object = _patch_object
patch.dict = _patch_dict
patch.multiple = _patch_multiple
patch.stopall = _patch_stopall
patch.TEST_PREFIX = 'test'
magic_methods = (
"lt le gt ge eq ne "
"getitem setitem delitem "
"len contains iter "
"hash str sizeof "
"enter exit "
# we added divmod and rdivmod here instead of numerics
# because there is no idivmod
"divmod rdivmod neg pos abs invert "
"complex int float index "
"trunc floor ceil "
"bool next "
)
numerics = (
"add sub mul matmul div floordiv mod lshift rshift and xor or pow truediv"
)
inplace = ' '.join('i%s' % n for n in numerics.split())
right = ' '.join('r%s' % n for n in numerics.split())
# not including __prepare__, __instancecheck__, __subclasscheck__
# (as they are metaclass methods)
# __del__ is not supported at all as it causes problems if it exists
_non_defaults = {
'__get__', '__set__', '__delete__', '__reversed__', '__missing__',
'__reduce__', '__reduce_ex__', '__getinitargs__', '__getnewargs__',
'__getstate__', '__setstate__', '__getformat__', '__setformat__',
'__repr__', '__dir__', '__subclasses__', '__format__',
'__getnewargs_ex__',
}
def _get_method(name, func):
"Turns a callable object (like a mock) into a real function"
def method(self, *args, **kw):
return func(self, *args, **kw)
method.__name__ = name
return method
_magics = {
'__%s__' % method for method in
' '.join([magic_methods, numerics, inplace, right]).split()
}
_all_magics = _magics | _non_defaults
_unsupported_magics = {
'__getattr__', '__setattr__',
'__init__', '__new__', '__prepare__',
'__instancecheck__', '__subclasscheck__',
'__del__'
}
_calculate_return_value = {
'__hash__': lambda self: object.__hash__(self),
'__str__': lambda self: object.__str__(self),
'__sizeof__': lambda self: object.__sizeof__(self),
}
_return_values = {
'__lt__': NotImplemented,
'__gt__': NotImplemented,
'__le__': NotImplemented,
'__ge__': NotImplemented,
'__int__': 1,
'__contains__': False,
'__len__': 0,
'__exit__': False,
'__complex__': 1j,
'__float__': 1.0,
'__bool__': True,
'__index__': 1,
}
def _get_eq(self):
def __eq__(other):
ret_val = self.__eq__._mock_return_value
if ret_val is not DEFAULT:
return ret_val
if self is other:
return True
return NotImplemented
return __eq__
def _get_ne(self):
def __ne__(other):
if self.__ne__._mock_return_value is not DEFAULT:
return DEFAULT
if self is other:
return False
return NotImplemented
return __ne__
def _get_iter(self):
def __iter__():
ret_val = self.__iter__._mock_return_value
if ret_val is DEFAULT:
return iter([])
# if ret_val was already an iterator, then calling iter on it should
# return the iterator unchanged
return iter(ret_val)
return __iter__
_side_effect_methods = {
'__eq__': _get_eq,
'__ne__': _get_ne,
'__iter__': _get_iter,
}
def _set_return_value(mock, method, name):
fixed = _return_values.get(name, DEFAULT)
if fixed is not DEFAULT:
method.return_value = fixed
return
return_calulator = _calculate_return_value.get(name)
if return_calulator is not None:
try:
return_value = return_calulator(mock)
except AttributeError:
# XXXX why do we return AttributeError here?
# set it as a side_effect instead?
return_value = AttributeError(name)
method.return_value = return_value
return
side_effector = _side_effect_methods.get(name)
if side_effector is not None:
method.side_effect = side_effector(mock)
class MagicMixin(object):
def __init__(self, *args, **kw):
self._mock_set_magics() # make magic work for kwargs in init
_safe_super(MagicMixin, self).__init__(*args, **kw)
self._mock_set_magics() # fix magic broken by upper level init
def _mock_set_magics(self):
these_magics = _magics
if getattr(self, "_mock_methods", None) is not None:
these_magics = _magics.intersection(self._mock_methods)
remove_magics = set()
remove_magics = _magics - these_magics
for entry in remove_magics:
if entry in type(self).__dict__:
# remove unneeded magic methods
delattr(self, entry)
# don't overwrite existing attributes if called a second time
these_magics = these_magics - set(type(self).__dict__)
_type = type(self)
for entry in these_magics:
setattr(_type, entry, MagicProxy(entry, self))
class NonCallableMagicMock(MagicMixin, NonCallableMock):
"""A version of `MagicMock` that isn't callable."""
def mock_add_spec(self, spec, spec_set=False):
"""Add a spec to a mock. `spec` can either be an object or a
list of strings. Only attributes on the `spec` can be fetched as
attributes from the mock.
If `spec_set` is True then only attributes on the spec can be set."""
self._mock_add_spec(spec, spec_set)
self._mock_set_magics()
class MagicMock(MagicMixin, Mock):
"""
MagicMock is a subclass of Mock with default implementations
of most of the magic methods. You can use MagicMock without having to
configure the magic methods yourself.
If you use the `spec` or `spec_set` arguments then *only* magic
methods that exist in the spec will be created.
Attributes and the return value of a `MagicMock` will also be `MagicMocks`.
"""
def mock_add_spec(self, spec, spec_set=False):
"""Add a spec to a mock. `spec` can either be an object or a
list of strings. Only attributes on the `spec` can be fetched as
attributes from the mock.
If `spec_set` is True then only attributes on the spec can be set."""
self._mock_add_spec(spec, spec_set)
self._mock_set_magics()
class MagicProxy(object):
def __init__(self, name, parent):
self.name = name
self.parent = parent
def __call__(self, *args, **kwargs):
m = self.create_mock()
return m(*args, **kwargs)
def create_mock(self):
entry = self.name
parent = self.parent
m = parent._get_child_mock(name=entry, _new_name=entry,
_new_parent=parent)
setattr(parent, entry, m)
_set_return_value(parent, m, entry)
return m
def __get__(self, obj, _type=None):
return self.create_mock()
class _ANY(object):
"A helper object that compares equal to everything."
def __eq__(self, other):
return True
def __ne__(self, other):
return False
def __repr__(self):
return '<ANY>'
ANY = _ANY()
def _format_call_signature(name, args, kwargs):
message = '%s(%%s)' % name
formatted_args = ''
args_string = ', '.join([repr(arg) for arg in args])
kwargs_string = ', '.join([
'%s=%r' % (key, value) for key, value in sorted(kwargs.items())
])
if args_string:
formatted_args = args_string
if kwargs_string:
if formatted_args:
formatted_args += ', '
formatted_args += kwargs_string
return message % formatted_args
class _Call(tuple):
"""
A tuple for holding the results of a call to a mock, either in the form
`(args, kwargs)` or `(name, args, kwargs)`.
If args or kwargs are empty then a call tuple will compare equal to
a tuple without those values. This makes comparisons less verbose::
_Call(('name', (), {})) == ('name',)
_Call(('name', (1,), {})) == ('name', (1,))
_Call(((), {'a': 'b'})) == ({'a': 'b'},)
The `_Call` object provides a useful shortcut for comparing with call::
_Call(((1, 2), {'a': 3})) == call(1, 2, a=3)
_Call(('foo', (1, 2), {'a': 3})) == call.foo(1, 2, a=3)
If the _Call has no name then it will match any name.
"""
def __new__(cls, value=(), name='', parent=None, two=False,
from_kall=True):
args = ()
kwargs = {}
_len = len(value)
if _len == 3:
name, args, kwargs = value
elif _len == 2:
first, second = value
if isinstance(first, str):
name = first
if isinstance(second, tuple):
args = second
else:
kwargs = second
else:
args, kwargs = first, second
elif _len == 1:
value, = value
if isinstance(value, str):
name = value
elif isinstance(value, tuple):
args = value
else:
kwargs = value
if two:
return tuple.__new__(cls, (args, kwargs))
return tuple.__new__(cls, (name, args, kwargs))
def __init__(self, value=(), name=None, parent=None, two=False,
from_kall=True):
self._mock_name = name
self._mock_parent = parent
self._mock_from_kall = from_kall
def __eq__(self, other):
if other is ANY:
return True
try:
len_other = len(other)
except TypeError:
return False
self_name = ''
if len(self) == 2:
self_args, self_kwargs = self
else:
self_name, self_args, self_kwargs = self
if (getattr(self, '_mock_parent', None) and getattr(other, '_mock_parent', None)
and self._mock_parent != other._mock_parent):
return False
other_name = ''
if len_other == 0:
other_args, other_kwargs = (), {}
elif len_other == 3:
other_name, other_args, other_kwargs = other
elif len_other == 1:
value, = other
if isinstance(value, tuple):
other_args = value
other_kwargs = {}
elif isinstance(value, str):
other_name = value
other_args, other_kwargs = (), {}
else:
other_args = ()
other_kwargs = value
elif len_other == 2:
# could be (name, args) or (name, kwargs) or (args, kwargs)
first, second = other
if isinstance(first, str):
other_name = first
if isinstance(second, tuple):
other_args, other_kwargs = second, {}
else:
other_args, other_kwargs = (), second
else:
other_args, other_kwargs = first, second
else:
return False
if self_name and other_name != self_name:
return False
# this order is important for ANY to work!
return (other_args, other_kwargs) == (self_args, self_kwargs)
__ne__ = object.__ne__
def __call__(self, *args, **kwargs):
if self._mock_name is None:
return _Call(('', args, kwargs), name='()')
name = self._mock_name + '()'
return _Call((self._mock_name, args, kwargs), name=name, parent=self)
def __getattr__(self, attr):
if self._mock_name is None:
return _Call(name=attr, from_kall=False)
name = '%s.%s' % (self._mock_name, attr)
return _Call(name=name, parent=self, from_kall=False)
def count(self, *args, **kwargs):
return self.__getattr__('count')(*args, **kwargs)
def index(self, *args, **kwargs):
return self.__getattr__('index')(*args, **kwargs)
def __repr__(self):
if not self._mock_from_kall:
name = self._mock_name or 'call'
if name.startswith('()'):
name = 'call%s' % name
return name
if len(self) == 2:
name = 'call'
args, kwargs = self
else:
name, args, kwargs = self
if not name:
name = 'call'
elif not name.startswith('()'):
name = 'call.%s' % name
else:
name = 'call%s' % name
return _format_call_signature(name, args, kwargs)
def call_list(self):
"""For a call object that represents multiple calls, `call_list`
returns a list of all the intermediate calls as well as the
final call."""
vals = []
thing = self
while thing is not None:
if thing._mock_from_kall:
vals.append(thing)
thing = thing._mock_parent
return _CallList(reversed(vals))
call = _Call(from_kall=False)
def create_autospec(spec, spec_set=False, instance=False, _parent=None,
_name=None, **kwargs):
"""Create a mock object using another object as a spec. Attributes on the
mock will use the corresponding attribute on the `spec` object as their
spec.
Functions or methods being mocked will have their arguments checked
to check that they are called with the correct signature.
If `spec_set` is True then attempting to set attributes that don't exist
on the spec object will raise an `AttributeError`.
If a class is used as a spec then the return value of the mock (the
instance of the class) will have the same spec. You can use a class as the
spec for an instance object by passing `instance=True`. The returned mock
will only be callable if instances of the mock are callable.
`create_autospec` also takes arbitrary keyword arguments that are passed to
the constructor of the created mock."""
if _is_list(spec):
# can't pass a list instance to the mock constructor as it will be
# interpreted as a list of strings
spec = type(spec)
is_type = isinstance(spec, type)
_kwargs = {'spec': spec}
if spec_set:
_kwargs = {'spec_set': spec}
elif spec is None:
# None we mock with a normal mock without a spec
_kwargs = {}
if _kwargs and instance:
_kwargs['_spec_as_instance'] = True
_kwargs.update(kwargs)
Klass = MagicMock
if inspect.isdatadescriptor(spec):
# descriptors don't have a spec
# because we don't know what type they return
_kwargs = {}
elif not _callable(spec):
Klass = NonCallableMagicMock
elif is_type and instance and not _instance_callable(spec):
Klass = NonCallableMagicMock
_name = _kwargs.pop('name', _name)
_new_name = _name
if _parent is None:
# for a top level object no _new_name should be set
_new_name = ''
mock = Klass(parent=_parent, _new_parent=_parent, _new_name=_new_name,
name=_name, **_kwargs)
if isinstance(spec, FunctionTypes):
# should only happen at the top level because we don't
# recurse for functions
mock = _set_signature(mock, spec)
else:
_check_signature(spec, mock, is_type, instance)
if _parent is not None and not instance:
_parent._mock_children[_name] = mock
if is_type and not instance and 'return_value' not in kwargs:
mock.return_value = create_autospec(spec, spec_set, instance=True,
_name='()', _parent=mock)
for entry in dir(spec):
if _is_magic(entry):
# MagicMock already does the useful magic methods for us
continue
# XXXX do we need a better way of getting attributes without
# triggering code execution (?) Probably not - we need the actual
# object to mock it so we would rather trigger a property than mock
# the property descriptor. Likewise we want to mock out dynamically
# provided attributes.
# XXXX what about attributes that raise exceptions other than
# AttributeError on being fetched?
# we could be resilient against it, or catch and propagate the
# exception when the attribute is fetched from the mock
try:
original = getattr(spec, entry)
except AttributeError:
continue
kwargs = {'spec': original}
if spec_set:
kwargs = {'spec_set': original}
if not isinstance(original, FunctionTypes):
new = _SpecState(original, spec_set, mock, entry, instance)
mock._mock_children[entry] = new
else:
parent = mock
if isinstance(spec, FunctionTypes):
parent = mock.mock
skipfirst = _must_skip(spec, entry, is_type)
kwargs['_eat_self'] = skipfirst
new = MagicMock(parent=parent, name=entry, _new_name=entry,
_new_parent=parent,
**kwargs)
mock._mock_children[entry] = new
_check_signature(original, new, skipfirst=skipfirst)
# so functions created with _set_signature become instance attributes,
# *plus* their underlying mock exists in _mock_children of the parent
# mock. Adding to _mock_children may be unnecessary where we are also
# setting as an instance attribute?
if isinstance(new, FunctionTypes):
setattr(mock, entry, new)
return mock
def _must_skip(spec, entry, is_type):
"""
Return whether we should skip the first argument on spec's `entry`
attribute.
"""
if not isinstance(spec, type):
if entry in getattr(spec, '__dict__', {}):
# instance attribute - shouldn't skip
return False
spec = spec.__class__
for klass in spec.__mro__:
result = klass.__dict__.get(entry, DEFAULT)
if result is DEFAULT:
continue
if isinstance(result, (staticmethod, classmethod)):
return False
elif isinstance(getattr(result, '__get__', None), MethodWrapperTypes):
# Normal method => skip if looked up on type
# (if looked up on instance, self is already skipped)
return is_type
else:
return False
# shouldn't get here unless function is a dynamically provided attribute
# XXXX untested behaviour
return is_type
def _get_class(obj):
try:
return obj.__class__
except AttributeError:
# it is possible for objects to have no __class__
return type(obj)
class _SpecState(object):
def __init__(self, spec, spec_set=False, parent=None,
name=None, ids=None, instance=False):
self.spec = spec
self.ids = ids
self.spec_set = spec_set
self.parent = parent
self.instance = instance
self.name = name
FunctionTypes = (
# python function
type(create_autospec),
# instance method
type(ANY.__eq__),
)
MethodWrapperTypes = (
type(ANY.__eq__.__get__),
)
file_spec = None
def _iterate_read_data(read_data):
# Helper for mock_open:
# Retrieve lines from read_data via a generator so that separate calls to
# readline, read, and readlines are properly interleaved
sep = b'\n' if isinstance(read_data, bytes) else '\n'
data_as_list = [l + sep for l in read_data.split(sep)]
if data_as_list[-1] == sep:
# If the last line ended in a newline, the list comprehension will have an
# extra entry that's just a newline. Remove this.
data_as_list = data_as_list[:-1]
else:
# If there wasn't an extra newline by itself, then the file being
# emulated doesn't have a newline to end the last line remove the
# newline that our naive format() added
data_as_list[-1] = data_as_list[-1][:-1]
for line in data_as_list:
yield line
def mock_open(mock=None, read_data=''):
"""
A helper function to create a mock to replace the use of `open`. It works
for `open` called directly or used as a context manager.
The `mock` argument is the mock object to configure. If `None` (the
default) then a `MagicMock` will be created for you, with the API limited
to methods or attributes available on standard file handles.
`read_data` is a string for the `read` methoddline`, and `readlines` of the
file handle to return. This is an empty string by default.
"""
def _readlines_side_effect(*args, **kwargs):
if handle.readlines.return_value is not None:
return handle.readlines.return_value
return list(_state[0])
def _read_side_effect(*args, **kwargs):
if handle.read.return_value is not None:
return handle.read.return_value
return type(read_data)().join(_state[0])
def _readline_side_effect():
if handle.readline.return_value is not None:
while True:
yield handle.readline.return_value
for line in _state[0]:
yield line
while True:
yield type(read_data)()
global file_spec
if file_spec is None:
import _io
file_spec = list(set(dir(_io.TextIOWrapper)).union(set(dir(_io.BytesIO))))
if mock is None:
mock = MagicMock(name='open', spec=open)
handle = MagicMock(spec=file_spec)
handle.__enter__.return_value = handle
_state = [_iterate_read_data(read_data), None]
handle.write.return_value = None
handle.read.return_value = None
handle.readline.return_value = None
handle.readlines.return_value = None
handle.read.side_effect = _read_side_effect
_state[1] = _readline_side_effect()
handle.readline.side_effect = _state[1]
handle.readlines.side_effect = _readlines_side_effect
def reset_data(*args, **kwargs):
_state[0] = _iterate_read_data(read_data)
if handle.readline.side_effect == _state[1]:
# Only reset the side effect if the user hasn't overridden it.
_state[1] = _readline_side_effect()
handle.readline.side_effect = _state[1]
return DEFAULT
mock.side_effect = reset_data
mock.return_value = handle
return mock
class PropertyMock(Mock):
"""
A mock intended to be used as a property, or other descriptor, on a class.
`PropertyMock` provides `__get__` and `__set__` methods so you can specify
a return value when it is fetched.
Fetching a `PropertyMock` instance from an object calls the mock, with
no args. Setting it calls the mock with the value being set.
"""
def _get_child_mock(self, **kwargs):
return MagicMock(**kwargs)
def __get__(self, obj, obj_type):
return self()
def __set__(self, obj, val):
self(val)
| 79,741 | 2,411 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/util.py | """Various utility functions."""
from collections import namedtuple, OrderedDict
from os.path import commonprefix
__unittest = True
_MAX_LENGTH = 80
_PLACEHOLDER_LEN = 12
_MIN_BEGIN_LEN = 5
_MIN_END_LEN = 5
_MIN_COMMON_LEN = 5
_MIN_DIFF_LEN = _MAX_LENGTH - \
(_MIN_BEGIN_LEN + _PLACEHOLDER_LEN + _MIN_COMMON_LEN +
_PLACEHOLDER_LEN + _MIN_END_LEN)
assert _MIN_DIFF_LEN >= 0
def _shorten(s, prefixlen, suffixlen):
skip = len(s) - prefixlen - suffixlen
if skip > _PLACEHOLDER_LEN:
s = '%s[%d chars]%s' % (s[:prefixlen], skip, s[len(s) - suffixlen:])
return s
def _common_shorten_repr(*args):
args = tuple(map(safe_repr, args))
maxlen = max(map(len, args))
if maxlen <= _MAX_LENGTH:
return args
prefix = commonprefix(args)
prefixlen = len(prefix)
common_len = _MAX_LENGTH - \
(maxlen - prefixlen + _MIN_BEGIN_LEN + _PLACEHOLDER_LEN)
if common_len > _MIN_COMMON_LEN:
assert _MIN_BEGIN_LEN + _PLACEHOLDER_LEN + _MIN_COMMON_LEN + \
(maxlen - prefixlen) < _MAX_LENGTH
prefix = _shorten(prefix, _MIN_BEGIN_LEN, common_len)
return tuple(prefix + s[prefixlen:] for s in args)
prefix = _shorten(prefix, _MIN_BEGIN_LEN, _MIN_COMMON_LEN)
return tuple(prefix + _shorten(s[prefixlen:], _MIN_DIFF_LEN, _MIN_END_LEN)
for s in args)
def safe_repr(obj, short=False):
try:
result = repr(obj)
except Exception:
result = object.__repr__(obj)
if not short or len(result) < _MAX_LENGTH:
return result
return result[:_MAX_LENGTH] + ' [truncated]...'
def strclass(cls):
return "%s.%s" % (cls.__module__, cls.__qualname__)
def sorted_list_difference(expected, actual):
"""Finds elements in only one or the other of two, sorted input lists.
Returns a two-element tuple of lists. The first list contains those
elements in the "expected" list but not in the "actual" list, and the
second contains those elements in the "actual" list but not in the
"expected" list. Duplicate elements in either input list are ignored.
"""
i = j = 0
missing = []
unexpected = []
while True:
try:
e = expected[i]
a = actual[j]
if e < a:
missing.append(e)
i += 1
while expected[i] == e:
i += 1
elif e > a:
unexpected.append(a)
j += 1
while actual[j] == a:
j += 1
else:
i += 1
try:
while expected[i] == e:
i += 1
finally:
j += 1
while actual[j] == a:
j += 1
except IndexError:
missing.extend(expected[i:])
unexpected.extend(actual[j:])
break
return missing, unexpected
def unorderable_list_difference(expected, actual):
"""Same behavior as sorted_list_difference but
for lists of unorderable items (like dicts).
As it does a linear search per item (remove) it
has O(n*n) performance."""
missing = []
while expected:
item = expected.pop()
try:
actual.remove(item)
except ValueError:
missing.append(item)
# anything left in actual is unexpected
return missing, actual
def three_way_cmp(x, y):
"""Return -1 if x < y, 0 if x == y and 1 if x > y"""
return (x > y) - (x < y)
_Mismatch = namedtuple('Mismatch', 'actual expected value')
def _count_diff_all_purpose(actual, expected):
'Returns list of (cnt_act, cnt_exp, elem) triples where the counts differ'
# elements need not be hashable
s, t = list(actual), list(expected)
m, n = len(s), len(t)
NULL = object()
result = []
for i, elem in enumerate(s):
if elem is NULL:
continue
cnt_s = cnt_t = 0
for j in range(i, m):
if s[j] == elem:
cnt_s += 1
s[j] = NULL
for j, other_elem in enumerate(t):
if other_elem == elem:
cnt_t += 1
t[j] = NULL
if cnt_s != cnt_t:
diff = _Mismatch(cnt_s, cnt_t, elem)
result.append(diff)
for i, elem in enumerate(t):
if elem is NULL:
continue
cnt_t = 0
for j in range(i, n):
if t[j] == elem:
cnt_t += 1
t[j] = NULL
diff = _Mismatch(0, cnt_t, elem)
result.append(diff)
return result
def _ordered_count(iterable):
'Return dict of element counts, in the order they were first seen'
c = OrderedDict()
for elem in iterable:
c[elem] = c.get(elem, 0) + 1
return c
def _count_diff_hashable(actual, expected):
'Returns list of (cnt_act, cnt_exp, elem) triples where the counts differ'
# elements must be hashable
s, t = _ordered_count(actual), _ordered_count(expected)
result = []
for elem, cnt_s in s.items():
cnt_t = t.get(elem, 0)
if cnt_s != cnt_t:
diff = _Mismatch(cnt_s, cnt_t, elem)
result.append(diff)
for elem, cnt_t in t.items():
if elem not in s:
diff = _Mismatch(0, cnt_t, elem)
result.append(diff)
return result
| 5,433 | 178 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/result.py | """Test result object"""
import io
import sys
import traceback
from . import util
from functools import wraps
__unittest = True
def failfast(method):
@wraps(method)
def inner(self, *args, **kw):
if getattr(self, 'failfast', False):
self.stop()
return method(self, *args, **kw)
return inner
STDOUT_LINE = '\nStdout:\n%s'
STDERR_LINE = '\nStderr:\n%s'
class TestResult(object):
"""Holder for test result information.
Test results are automatically managed by the TestCase and TestSuite
classes, and do not need to be explicitly manipulated by writers of tests.
Each instance holds the total number of tests run, and collections of
failures and errors that occurred among those test runs. The collections
contain tuples of (testcase, exceptioninfo), where exceptioninfo is the
formatted traceback of the error that occurred.
"""
_previousTestClass = None
_testRunEntered = False
_moduleSetUpFailed = False
def __init__(self, stream=None, descriptions=None, verbosity=None):
self.failfast = False
self.failures = []
self.errors = []
self.testsRun = 0
self.skipped = []
self.expectedFailures = []
self.unexpectedSuccesses = []
self.shouldStop = False
self.buffer = False
self.tb_locals = False
self._stdout_buffer = None
self._stderr_buffer = None
self._original_stdout = sys.stdout
self._original_stderr = sys.stderr
self._mirrorOutput = False
def printErrors(self):
"Called by TestRunner after test run"
def startTest(self, test):
"Called when the given test is about to be run"
self.testsRun += 1
self._mirrorOutput = False
self._setupStdout()
def _setupStdout(self):
if self.buffer:
if self._stderr_buffer is None:
self._stderr_buffer = io.StringIO()
self._stdout_buffer = io.StringIO()
sys.stdout = self._stdout_buffer
sys.stderr = self._stderr_buffer
def startTestRun(self):
"""Called once before any tests are executed.
See startTest for a method called before each test.
"""
def stopTest(self, test):
"""Called when the given test has been run"""
self._restoreStdout()
self._mirrorOutput = False
def _restoreStdout(self):
if self.buffer:
if self._mirrorOutput:
output = sys.stdout.getvalue()
error = sys.stderr.getvalue()
if output:
if not output.endswith('\n'):
output += '\n'
self._original_stdout.write(STDOUT_LINE % output)
if error:
if not error.endswith('\n'):
error += '\n'
self._original_stderr.write(STDERR_LINE % error)
sys.stdout = self._original_stdout
sys.stderr = self._original_stderr
self._stdout_buffer.seek(0)
self._stdout_buffer.truncate()
self._stderr_buffer.seek(0)
self._stderr_buffer.truncate()
def stopTestRun(self):
"""Called once after all tests are executed.
See stopTest for a method called after each test.
"""
@failfast
def addError(self, test, err):
"""Called when an error has occurred. 'err' is a tuple of values as
returned by sys.exc_info().
"""
self.errors.append((test, self._exc_info_to_string(err, test)))
self._mirrorOutput = True
@failfast
def addFailure(self, test, err):
"""Called when an error has occurred. 'err' is a tuple of values as
returned by sys.exc_info()."""
self.failures.append((test, self._exc_info_to_string(err, test)))
self._mirrorOutput = True
def addSubTest(self, test, subtest, err):
"""Called at the end of a subtest.
'err' is None if the subtest ended successfully, otherwise it's a
tuple of values as returned by sys.exc_info().
"""
# By default, we don't do anything with successful subtests, but
# more sophisticated test results might want to record them.
if err is not None:
if getattr(self, 'failfast', False):
self.stop()
if issubclass(err[0], test.failureException):
errors = self.failures
else:
errors = self.errors
errors.append((subtest, self._exc_info_to_string(err, test)))
self._mirrorOutput = True
def addSuccess(self, test):
"Called when a test has completed successfully"
pass
def addSkip(self, test, reason):
"""Called when a test is skipped."""
self.skipped.append((test, reason))
def addExpectedFailure(self, test, err):
"""Called when an expected failure/error occurred."""
self.expectedFailures.append(
(test, self._exc_info_to_string(err, test)))
@failfast
def addUnexpectedSuccess(self, test):
"""Called when a test was expected to fail, but succeed."""
self.unexpectedSuccesses.append(test)
def wasSuccessful(self):
"""Tells whether or not this result was a success."""
# The hasattr check is for test_result's OldResult test. That
# way this method works on objects that lack the attribute.
# (where would such result intances come from? old stored pickles?)
return ((len(self.failures) == len(self.errors) == 0) and
(not hasattr(self, 'unexpectedSuccesses') or
len(self.unexpectedSuccesses) == 0))
def stop(self):
"""Indicates that the tests should be aborted."""
self.shouldStop = True
def _exc_info_to_string(self, err, test):
"""Converts a sys.exc_info()-style tuple of values into a string."""
exctype, value, tb = err
# Skip test runner traceback levels
while tb and self._is_relevant_tb_level(tb):
tb = tb.tb_next
if exctype is test.failureException:
# Skip assert*() traceback levels
length = self._count_relevant_tb_levels(tb)
else:
length = None
tb_e = traceback.TracebackException(
exctype, value, tb, limit=length, capture_locals=self.tb_locals)
msgLines = list(tb_e.format())
if self.buffer:
output = sys.stdout.getvalue()
error = sys.stderr.getvalue()
if output:
if not output.endswith('\n'):
output += '\n'
msgLines.append(STDOUT_LINE % output)
if error:
if not error.endswith('\n'):
error += '\n'
msgLines.append(STDERR_LINE % error)
return ''.join(msgLines)
def _is_relevant_tb_level(self, tb):
return '__unittest' in tb.tb_frame.f_globals
def _count_relevant_tb_levels(self, tb):
length = 0
while tb and not self._is_relevant_tb_level(tb):
length += 1
tb = tb.tb_next
return length
def __repr__(self):
return ("<%s run=%i errors=%i failures=%i>" %
(util.strclass(self.__class__), self.testsRun, len(self.errors),
len(self.failures)))
| 7,442 | 217 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/suite.py | """TestSuite"""
import sys
from . import case
from . import util
__unittest = True
def _call_if_exists(parent, attr):
func = getattr(parent, attr, lambda: None)
func()
class BaseTestSuite(object):
"""A simple test suite that doesn't provide class or module shared fixtures.
"""
_cleanup = True
def __init__(self, tests=()):
self._tests = []
self._removed_tests = 0
self.addTests(tests)
def __repr__(self):
return "<%s tests=%s>" % (util.strclass(self.__class__), list(self))
def __eq__(self, other):
if not isinstance(other, self.__class__):
return NotImplemented
return list(self) == list(other)
def __iter__(self):
return iter(self._tests)
def countTestCases(self):
cases = self._removed_tests
for test in self:
if test:
cases += test.countTestCases()
return cases
def addTest(self, test):
# sanity checks
if not callable(test):
raise TypeError("{} is not callable".format(repr(test)))
if isinstance(test, type) and issubclass(test,
(case.TestCase, TestSuite)):
raise TypeError("TestCases and TestSuites must be instantiated "
"before passing them to addTest()")
self._tests.append(test)
def addTests(self, tests):
if isinstance(tests, str):
raise TypeError("tests must be an iterable of tests, not a string")
for test in tests:
self.addTest(test)
def run(self, result):
for index, test in enumerate(self):
if result.shouldStop:
break
test(result)
if self._cleanup:
self._removeTestAtIndex(index)
return result
def _removeTestAtIndex(self, index):
"""Stop holding a reference to the TestCase at index."""
try:
test = self._tests[index]
except TypeError:
# support for suite implementations that have overridden self._tests
pass
else:
# Some unittest tests add non TestCase/TestSuite objects to
# the suite.
if hasattr(test, 'countTestCases'):
self._removed_tests += test.countTestCases()
self._tests[index] = None
def __call__(self, *args, **kwds):
return self.run(*args, **kwds)
def debug(self):
"""Run the tests without collecting errors in a TestResult"""
for test in self:
test.debug()
class TestSuite(BaseTestSuite):
"""A test suite is a composite test consisting of a number of TestCases.
For use, create an instance of TestSuite, then add test case instances.
When all tests have been added, the suite can be passed to a test
runner, such as TextTestRunner. It will run the individual test cases
in the order in which they were added, aggregating the results. When
subclassing, do not forget to call the base class constructor.
"""
def run(self, result, debug=False):
topLevel = False
if getattr(result, '_testRunEntered', False) is False:
result._testRunEntered = topLevel = True
for index, test in enumerate(self):
if result.shouldStop:
break
if _isnotsuite(test):
self._tearDownPreviousClass(test, result)
self._handleModuleFixture(test, result)
self._handleClassSetUp(test, result)
result._previousTestClass = test.__class__
if (getattr(test.__class__, '_classSetupFailed', False) or
getattr(result, '_moduleSetUpFailed', False)):
continue
if not debug:
test(result)
else:
test.debug()
if self._cleanup:
self._removeTestAtIndex(index)
if topLevel:
self._tearDownPreviousClass(None, result)
self._handleModuleTearDown(result)
result._testRunEntered = False
return result
def debug(self):
"""Run the tests without collecting errors in a TestResult"""
debug = _DebugResult()
self.run(debug, True)
################################
def _handleClassSetUp(self, test, result):
previousClass = getattr(result, '_previousTestClass', None)
currentClass = test.__class__
if currentClass == previousClass:
return
if result._moduleSetUpFailed:
return
if getattr(currentClass, "__unittest_skip__", False):
return
try:
currentClass._classSetupFailed = False
except TypeError:
# test may actually be a function
# so its class will be a builtin-type
pass
setUpClass = getattr(currentClass, 'setUpClass', None)
if setUpClass is not None:
_call_if_exists(result, '_setupStdout')
try:
setUpClass()
except Exception as e:
if isinstance(result, _DebugResult):
raise
currentClass._classSetupFailed = True
className = util.strclass(currentClass)
errorName = 'setUpClass (%s)' % className
self._addClassOrModuleLevelException(result, e, errorName)
finally:
_call_if_exists(result, '_restoreStdout')
def _get_previous_module(self, result):
previousModule = None
previousClass = getattr(result, '_previousTestClass', None)
if previousClass is not None:
previousModule = previousClass.__module__
return previousModule
def _handleModuleFixture(self, test, result):
previousModule = self._get_previous_module(result)
currentModule = test.__class__.__module__
if currentModule == previousModule:
return
self._handleModuleTearDown(result)
result._moduleSetUpFailed = False
try:
module = sys.modules[currentModule]
except KeyError:
return
setUpModule = getattr(module, 'setUpModule', None)
if setUpModule is not None:
_call_if_exists(result, '_setupStdout')
try:
setUpModule()
except Exception as e:
if isinstance(result, _DebugResult):
raise
result._moduleSetUpFailed = True
errorName = 'setUpModule (%s)' % currentModule
self._addClassOrModuleLevelException(result, e, errorName)
finally:
_call_if_exists(result, '_restoreStdout')
def _addClassOrModuleLevelException(self, result, exception, errorName):
error = _ErrorHolder(errorName)
addSkip = getattr(result, 'addSkip', None)
if addSkip is not None and isinstance(exception, case.SkipTest):
addSkip(error, str(exception))
else:
result.addError(error, sys.exc_info())
def _handleModuleTearDown(self, result):
previousModule = self._get_previous_module(result)
if previousModule is None:
return
if result._moduleSetUpFailed:
return
try:
module = sys.modules[previousModule]
except KeyError:
return
tearDownModule = getattr(module, 'tearDownModule', None)
if tearDownModule is not None:
_call_if_exists(result, '_setupStdout')
try:
tearDownModule()
except Exception as e:
if isinstance(result, _DebugResult):
raise
errorName = 'tearDownModule (%s)' % previousModule
self._addClassOrModuleLevelException(result, e, errorName)
finally:
_call_if_exists(result, '_restoreStdout')
def _tearDownPreviousClass(self, test, result):
previousClass = getattr(result, '_previousTestClass', None)
currentClass = test.__class__
if currentClass == previousClass:
return
if getattr(previousClass, '_classSetupFailed', False):
return
if getattr(result, '_moduleSetUpFailed', False):
return
if getattr(previousClass, "__unittest_skip__", False):
return
tearDownClass = getattr(previousClass, 'tearDownClass', None)
if tearDownClass is not None:
_call_if_exists(result, '_setupStdout')
try:
tearDownClass()
except Exception as e:
if isinstance(result, _DebugResult):
raise
className = util.strclass(previousClass)
errorName = 'tearDownClass (%s)' % className
self._addClassOrModuleLevelException(result, e, errorName)
finally:
_call_if_exists(result, '_restoreStdout')
class _ErrorHolder(object):
"""
Placeholder for a TestCase inside a result. As far as a TestResult
is concerned, this looks exactly like a unit test. Used to insert
arbitrary errors into a test suite run.
"""
# Inspired by the ErrorHolder from Twisted:
# http://twistedmatrix.com/trac/browser/trunk/twisted/trial/runner.py
# attribute used by TestResult._exc_info_to_string
failureException = None
def __init__(self, description):
self.description = description
def id(self):
return self.description
def shortDescription(self):
return None
def __repr__(self):
return "<ErrorHolder description=%r>" % (self.description,)
def __str__(self):
return self.id()
def run(self, result):
# could call result.addError(...) - but this test-like object
# shouldn't be run anyway
pass
def __call__(self, result):
return self.run(result)
def countTestCases(self):
return 0
def _isnotsuite(test):
"A crude way to tell apart testcases and suites with duck-typing"
try:
iter(test)
except TypeError:
return True
return False
class _DebugResult(object):
"Used by the TestSuite to hold previous class when running in debug."
_previousTestClass = None
_moduleSetUpFailed = False
shouldStop = False
| 10,479 | 322 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/__init__.py | """
Python unit testing framework, based on Erich Gamma's JUnit and Kent Beck's
Smalltalk testing framework (used with permission).
This module contains the core framework classes that form the basis of
specific test cases and suites (TestCase, TestSuite etc.), and also a
text-based utility class for running the tests and reporting the results
(TextTestRunner).
Simple usage:
import unittest
class IntegerArithmeticTestCase(unittest.TestCase):
def testAdd(self): # test method names begin with 'test'
self.assertEqual((1 + 2), 3)
self.assertEqual(0 + 1, 1)
def testMultiply(self):
self.assertEqual((0 * 10), 0)
self.assertEqual((5 * 8), 40)
if __name__ == '__main__':
unittest.main()
Further information is available in the bundled documentation, and from
http://docs.python.org/library/unittest.html
Copyright (c) 1999-2003 Steve Purcell
Copyright (c) 2003-2010 Python Software Foundation
This module is free software, and you may redistribute it and/or modify
it under the same terms as Python itself, so long as this copyright message
and disclaimer are retained in their original form.
IN NO EVENT SHALL THE AUTHOR BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
THIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE.
THE AUTHOR SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. THE CODE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS,
AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
"""
__all__ = ['TestResult', 'TestCase', 'TestSuite',
'TextTestRunner', 'TestLoader', 'FunctionTestCase', 'main',
'defaultTestLoader', 'SkipTest', 'skip', 'skipIf', 'skipUnless',
'expectedFailure', 'TextTestResult', 'installHandler',
'registerResult', 'removeResult', 'removeHandler',
'getTestCaseNames', 'makeSuite', 'findTestCases']
__unittest = True
from .result import TestResult
from .case import (TestCase, FunctionTestCase, SkipTest, skip, skipIf,
skipUnless, expectedFailure)
from .suite import BaseTestSuite, TestSuite
from .loader import (TestLoader, defaultTestLoader, makeSuite, getTestCaseNames,
findTestCases)
from ._main import TestProgram, main
from .runner import TextTestRunner, TextTestResult
from .signals import installHandler, registerResult, removeResult, removeHandler
# deprecated
_TextTestResult = TextTestResult
# There are no tests here, so don't try to run anything discovered from
# introspecting the symbols (e.g. FunctionTestCase). Instead, all our
# tests come from within unittest.test.
def load_tests(loader, tests, pattern):
import os.path
# top level directory cached on loader instance
this_dir = os.path.dirname(__file__)
return loader.discover(start_dir=this_dir, pattern=pattern)
| 3,081 | 77 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/test_case.py | import contextlib
import difflib
import pprint
import pickle
import re
import sys
import logging
import warnings
import weakref
import inspect
from copy import deepcopy
from test import support
import unittest
from unittest.test.support import (
TestEquality, TestHashing, LoggingResult, LegacyLoggingResult,
ResultWithNoStartTestRunStopTestRun
)
from test.support import captured_stderr
log_foo = logging.getLogger('foo')
log_foobar = logging.getLogger('foo.bar')
log_quux = logging.getLogger('quux')
class Test(object):
"Keep these TestCase classes out of the main namespace"
class Foo(unittest.TestCase):
def runTest(self): pass
def test1(self): pass
class Bar(Foo):
def test2(self): pass
class LoggingTestCase(unittest.TestCase):
"""A test case which logs its calls."""
def __init__(self, events):
super(Test.LoggingTestCase, self).__init__('test')
self.events = events
def setUp(self):
self.events.append('setUp')
def test(self):
self.events.append('test')
def tearDown(self):
self.events.append('tearDown')
class Test_TestCase(unittest.TestCase, TestEquality, TestHashing):
### Set up attributes used by inherited tests
################################################################
# Used by TestHashing.test_hash and TestEquality.test_eq
eq_pairs = [(Test.Foo('test1'), Test.Foo('test1'))]
# Used by TestEquality.test_ne
ne_pairs = [(Test.Foo('test1'), Test.Foo('runTest')),
(Test.Foo('test1'), Test.Bar('test1')),
(Test.Foo('test1'), Test.Bar('test2'))]
################################################################
### /Set up attributes used by inherited tests
# "class TestCase([methodName])"
# ...
# "Each instance of TestCase will run a single test method: the
# method named methodName."
# ...
# "methodName defaults to "runTest"."
#
# Make sure it really is optional, and that it defaults to the proper
# thing.
def test_init__no_test_name(self):
class Test(unittest.TestCase):
def runTest(self): raise MyException()
def test(self): pass
self.assertEqual(Test().id()[-13:], '.Test.runTest')
# test that TestCase can be instantiated with no args
# primarily for use at the interactive interpreter
test = unittest.TestCase()
test.assertEqual(3, 3)
with test.assertRaises(test.failureException):
test.assertEqual(3, 2)
with self.assertRaises(AttributeError):
test.run()
# "class TestCase([methodName])"
# ...
# "Each instance of TestCase will run a single test method: the
# method named methodName."
def test_init__test_name__valid(self):
class Test(unittest.TestCase):
def runTest(self): raise MyException()
def test(self): pass
self.assertEqual(Test('test').id()[-10:], '.Test.test')
# "class TestCase([methodName])"
# ...
# "Each instance of TestCase will run a single test method: the
# method named methodName."
def test_init__test_name__invalid(self):
class Test(unittest.TestCase):
def runTest(self): raise MyException()
def test(self): pass
try:
Test('testfoo')
except ValueError:
pass
else:
self.fail("Failed to raise ValueError")
# "Return the number of tests represented by the this test object. For
# TestCase instances, this will always be 1"
def test_countTestCases(self):
class Foo(unittest.TestCase):
def test(self): pass
self.assertEqual(Foo('test').countTestCases(), 1)
# "Return the default type of test result object to be used to run this
# test. For TestCase instances, this will always be
# unittest.TestResult; subclasses of TestCase should
# override this as necessary."
def test_defaultTestResult(self):
class Foo(unittest.TestCase):
def runTest(self):
pass
result = Foo().defaultTestResult()
self.assertEqual(type(result), unittest.TestResult)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if setUp() raises
# an exception.
def test_run_call_order__error_in_setUp(self):
events = []
result = LoggingResult(events)
class Foo(Test.LoggingTestCase):
def setUp(self):
super(Foo, self).setUp()
raise RuntimeError('raised by Foo.setUp')
Foo(events).run(result)
expected = ['startTest', 'setUp', 'addError', 'stopTest']
self.assertEqual(events, expected)
# "With a temporary result stopTestRun is called when setUp errors.
def test_run_call_order__error_in_setUp_default_result(self):
events = []
class Foo(Test.LoggingTestCase):
def defaultTestResult(self):
return LoggingResult(self.events)
def setUp(self):
super(Foo, self).setUp()
raise RuntimeError('raised by Foo.setUp')
Foo(events).run()
expected = ['startTestRun', 'startTest', 'setUp', 'addError',
'stopTest', 'stopTestRun']
self.assertEqual(events, expected)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if the test raises
# an error (as opposed to a failure).
def test_run_call_order__error_in_test(self):
events = []
result = LoggingResult(events)
class Foo(Test.LoggingTestCase):
def test(self):
super(Foo, self).test()
raise RuntimeError('raised by Foo.test')
expected = ['startTest', 'setUp', 'test', 'tearDown',
'addError', 'stopTest']
Foo(events).run(result)
self.assertEqual(events, expected)
# "With a default result, an error in the test still results in stopTestRun
# being called."
def test_run_call_order__error_in_test_default_result(self):
events = []
class Foo(Test.LoggingTestCase):
def defaultTestResult(self):
return LoggingResult(self.events)
def test(self):
super(Foo, self).test()
raise RuntimeError('raised by Foo.test')
expected = ['startTestRun', 'startTest', 'setUp', 'test',
'tearDown', 'addError', 'stopTest', 'stopTestRun']
Foo(events).run()
self.assertEqual(events, expected)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if the test signals
# a failure (as opposed to an error).
def test_run_call_order__failure_in_test(self):
events = []
result = LoggingResult(events)
class Foo(Test.LoggingTestCase):
def test(self):
super(Foo, self).test()
self.fail('raised by Foo.test')
expected = ['startTest', 'setUp', 'test', 'tearDown',
'addFailure', 'stopTest']
Foo(events).run(result)
self.assertEqual(events, expected)
# "When a test fails with a default result stopTestRun is still called."
def test_run_call_order__failure_in_test_default_result(self):
class Foo(Test.LoggingTestCase):
def defaultTestResult(self):
return LoggingResult(self.events)
def test(self):
super(Foo, self).test()
self.fail('raised by Foo.test')
expected = ['startTestRun', 'startTest', 'setUp', 'test',
'tearDown', 'addFailure', 'stopTest', 'stopTestRun']
events = []
Foo(events).run()
self.assertEqual(events, expected)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if tearDown() raises
# an exception.
def test_run_call_order__error_in_tearDown(self):
events = []
result = LoggingResult(events)
class Foo(Test.LoggingTestCase):
def tearDown(self):
super(Foo, self).tearDown()
raise RuntimeError('raised by Foo.tearDown')
Foo(events).run(result)
expected = ['startTest', 'setUp', 'test', 'tearDown', 'addError',
'stopTest']
self.assertEqual(events, expected)
# "When tearDown errors with a default result stopTestRun is still called."
def test_run_call_order__error_in_tearDown_default_result(self):
class Foo(Test.LoggingTestCase):
def defaultTestResult(self):
return LoggingResult(self.events)
def tearDown(self):
super(Foo, self).tearDown()
raise RuntimeError('raised by Foo.tearDown')
events = []
Foo(events).run()
expected = ['startTestRun', 'startTest', 'setUp', 'test', 'tearDown',
'addError', 'stopTest', 'stopTestRun']
self.assertEqual(events, expected)
# "TestCase.run() still works when the defaultTestResult is a TestResult
# that does not support startTestRun and stopTestRun.
def test_run_call_order_default_result(self):
class Foo(unittest.TestCase):
def defaultTestResult(self):
return ResultWithNoStartTestRunStopTestRun()
def test(self):
pass
Foo('test').run()
def _check_call_order__subtests(self, result, events, expected_events):
class Foo(Test.LoggingTestCase):
def test(self):
super(Foo, self).test()
for i in [1, 2, 3]:
with self.subTest(i=i):
if i == 1:
self.fail('failure')
for j in [2, 3]:
with self.subTest(j=j):
if i * j == 6:
raise RuntimeError('raised by Foo.test')
1 / 0
# Order is the following:
# i=1 => subtest failure
# i=2, j=2 => subtest success
# i=2, j=3 => subtest error
# i=3, j=2 => subtest error
# i=3, j=3 => subtest success
# toplevel => error
Foo(events).run(result)
self.assertEqual(events, expected_events)
def test_run_call_order__subtests(self):
events = []
result = LoggingResult(events)
expected = ['startTest', 'setUp', 'test', 'tearDown',
'addSubTestFailure', 'addSubTestSuccess',
'addSubTestFailure', 'addSubTestFailure',
'addSubTestSuccess', 'addError', 'stopTest']
self._check_call_order__subtests(result, events, expected)
def test_run_call_order__subtests_legacy(self):
# With a legacy result object (without an addSubTest method),
# text execution stops after the first subtest failure.
events = []
result = LegacyLoggingResult(events)
expected = ['startTest', 'setUp', 'test', 'tearDown',
'addFailure', 'stopTest']
self._check_call_order__subtests(result, events, expected)
def _check_call_order__subtests_success(self, result, events, expected_events):
class Foo(Test.LoggingTestCase):
def test(self):
super(Foo, self).test()
for i in [1, 2]:
with self.subTest(i=i):
for j in [2, 3]:
with self.subTest(j=j):
pass
Foo(events).run(result)
self.assertEqual(events, expected_events)
def test_run_call_order__subtests_success(self):
events = []
result = LoggingResult(events)
# The 6 subtest successes are individually recorded, in addition
# to the whole test success.
expected = (['startTest', 'setUp', 'test', 'tearDown']
+ 6 * ['addSubTestSuccess']
+ ['addSuccess', 'stopTest'])
self._check_call_order__subtests_success(result, events, expected)
def test_run_call_order__subtests_success_legacy(self):
# With a legacy result, only the whole test success is recorded.
events = []
result = LegacyLoggingResult(events)
expected = ['startTest', 'setUp', 'test', 'tearDown',
'addSuccess', 'stopTest']
self._check_call_order__subtests_success(result, events, expected)
def test_run_call_order__subtests_failfast(self):
events = []
result = LoggingResult(events)
result.failfast = True
class Foo(Test.LoggingTestCase):
def test(self):
super(Foo, self).test()
with self.subTest(i=1):
self.fail('failure')
with self.subTest(i=2):
self.fail('failure')
self.fail('failure')
expected = ['startTest', 'setUp', 'test', 'tearDown',
'addSubTestFailure', 'stopTest']
Foo(events).run(result)
self.assertEqual(events, expected)
def test_subtests_failfast(self):
# Ensure proper test flow with subtests and failfast (issue #22894)
events = []
class Foo(unittest.TestCase):
def test_a(self):
with self.subTest():
events.append('a1')
events.append('a2')
def test_b(self):
with self.subTest():
events.append('b1')
with self.subTest():
self.fail('failure')
events.append('b2')
def test_c(self):
events.append('c')
result = unittest.TestResult()
result.failfast = True
suite = unittest.makeSuite(Foo)
suite.run(result)
expected = ['a1', 'a2', 'b1']
self.assertEqual(events, expected)
def test_subtests_debug(self):
# Test debug() with a test that uses subTest() (bpo-34900)
events = []
class Foo(unittest.TestCase):
def test_a(self):
events.append('test case')
with self.subTest():
events.append('subtest 1')
Foo('test_a').debug()
self.assertEqual(events, ['test case', 'subtest 1'])
# "This class attribute gives the exception raised by the test() method.
# If a test framework needs to use a specialized exception, possibly to
# carry additional information, it must subclass this exception in
# order to ``play fair'' with the framework. The initial value of this
# attribute is AssertionError"
def test_failureException__default(self):
class Foo(unittest.TestCase):
def test(self):
pass
self.assertIs(Foo('test').failureException, AssertionError)
# "This class attribute gives the exception raised by the test() method.
# If a test framework needs to use a specialized exception, possibly to
# carry additional information, it must subclass this exception in
# order to ``play fair'' with the framework."
#
# Make sure TestCase.run() respects the designated failureException
def test_failureException__subclassing__explicit_raise(self):
events = []
result = LoggingResult(events)
class Foo(unittest.TestCase):
def test(self):
raise RuntimeError()
failureException = RuntimeError
self.assertIs(Foo('test').failureException, RuntimeError)
Foo('test').run(result)
expected = ['startTest', 'addFailure', 'stopTest']
self.assertEqual(events, expected)
# "This class attribute gives the exception raised by the test() method.
# If a test framework needs to use a specialized exception, possibly to
# carry additional information, it must subclass this exception in
# order to ``play fair'' with the framework."
#
# Make sure TestCase.run() respects the designated failureException
def test_failureException__subclassing__implicit_raise(self):
events = []
result = LoggingResult(events)
class Foo(unittest.TestCase):
def test(self):
self.fail("foo")
failureException = RuntimeError
self.assertIs(Foo('test').failureException, RuntimeError)
Foo('test').run(result)
expected = ['startTest', 'addFailure', 'stopTest']
self.assertEqual(events, expected)
# "The default implementation does nothing."
def test_setUp(self):
class Foo(unittest.TestCase):
def runTest(self):
pass
# ... and nothing should happen
Foo().setUp()
# "The default implementation does nothing."
def test_tearDown(self):
class Foo(unittest.TestCase):
def runTest(self):
pass
# ... and nothing should happen
Foo().tearDown()
# "Return a string identifying the specific test case."
#
# Because of the vague nature of the docs, I'm not going to lock this
# test down too much. Really all that can be asserted is that the id()
# will be a string (either 8-byte or unicode -- again, because the docs
# just say "string")
def test_id(self):
class Foo(unittest.TestCase):
def runTest(self):
pass
self.assertIsInstance(Foo().id(), str)
# "If result is omitted or None, a temporary result object is created,
# used, and is made available to the caller. As TestCase owns the
# temporary result startTestRun and stopTestRun are called.
def test_run__uses_defaultTestResult(self):
events = []
defaultResult = LoggingResult(events)
class Foo(unittest.TestCase):
def test(self):
events.append('test')
def defaultTestResult(self):
return defaultResult
# Make run() find a result object on its own
result = Foo('test').run()
self.assertIs(result, defaultResult)
expected = ['startTestRun', 'startTest', 'test', 'addSuccess',
'stopTest', 'stopTestRun']
self.assertEqual(events, expected)
# "The result object is returned to run's caller"
def test_run__returns_given_result(self):
class Foo(unittest.TestCase):
def test(self):
pass
result = unittest.TestResult()
retval = Foo('test').run(result)
self.assertIs(retval, result)
# "The same effect [as method run] may be had by simply calling the
# TestCase instance."
def test_call__invoking_an_instance_delegates_to_run(self):
resultIn = unittest.TestResult()
resultOut = unittest.TestResult()
class Foo(unittest.TestCase):
def test(self):
pass
def run(self, result):
self.assertIs(result, resultIn)
return resultOut
retval = Foo('test')(resultIn)
self.assertIs(retval, resultOut)
def testShortDescriptionWithoutDocstring(self):
self.assertIsNone(self.shortDescription())
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
def testShortDescriptionWithOneLineDocstring(self):
"""Tests shortDescription() for a method with a docstring."""
self.assertEqual(
self.shortDescription(),
'Tests shortDescription() for a method with a docstring.')
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
def testShortDescriptionWithMultiLineDocstring(self):
"""Tests shortDescription() for a method with a longer docstring.
This method ensures that only the first line of a docstring is
returned used in the short description, no matter how long the
whole thing is.
"""
self.assertEqual(
self.shortDescription(),
'Tests shortDescription() for a method with a longer '
'docstring.')
def testAddTypeEqualityFunc(self):
class SadSnake(object):
"""Dummy class for test_addTypeEqualityFunc."""
s1, s2 = SadSnake(), SadSnake()
self.assertFalse(s1 == s2)
def AllSnakesCreatedEqual(a, b, msg=None):
return type(a) == type(b) == SadSnake
self.addTypeEqualityFunc(SadSnake, AllSnakesCreatedEqual)
self.assertEqual(s1, s2)
# No this doesn't clean up and remove the SadSnake equality func
# from this TestCase instance but since its a local nothing else
# will ever notice that.
def testAssertIs(self):
thing = object()
self.assertIs(thing, thing)
self.assertRaises(self.failureException, self.assertIs, thing, object())
def testAssertIsNot(self):
thing = object()
self.assertIsNot(thing, object())
self.assertRaises(self.failureException, self.assertIsNot, thing, thing)
def testAssertIsInstance(self):
thing = []
self.assertIsInstance(thing, list)
self.assertRaises(self.failureException, self.assertIsInstance,
thing, dict)
def testAssertNotIsInstance(self):
thing = []
self.assertNotIsInstance(thing, dict)
self.assertRaises(self.failureException, self.assertNotIsInstance,
thing, list)
def testAssertIn(self):
animals = {'monkey': 'banana', 'cow': 'grass', 'seal': 'fish'}
self.assertIn('a', 'abc')
self.assertIn(2, [1, 2, 3])
self.assertIn('monkey', animals)
self.assertNotIn('d', 'abc')
self.assertNotIn(0, [1, 2, 3])
self.assertNotIn('otter', animals)
self.assertRaises(self.failureException, self.assertIn, 'x', 'abc')
self.assertRaises(self.failureException, self.assertIn, 4, [1, 2, 3])
self.assertRaises(self.failureException, self.assertIn, 'elephant',
animals)
self.assertRaises(self.failureException, self.assertNotIn, 'c', 'abc')
self.assertRaises(self.failureException, self.assertNotIn, 1, [1, 2, 3])
self.assertRaises(self.failureException, self.assertNotIn, 'cow',
animals)
def testAssertDictContainsSubset(self):
with warnings.catch_warnings():
warnings.simplefilter("ignore", DeprecationWarning)
self.assertDictContainsSubset({}, {})
self.assertDictContainsSubset({}, {'a': 1})
self.assertDictContainsSubset({'a': 1}, {'a': 1})
self.assertDictContainsSubset({'a': 1}, {'a': 1, 'b': 2})
self.assertDictContainsSubset({'a': 1, 'b': 2}, {'a': 1, 'b': 2})
with self.assertRaises(self.failureException):
self.assertDictContainsSubset({1: "one"}, {})
with self.assertRaises(self.failureException):
self.assertDictContainsSubset({'a': 2}, {'a': 1})
with self.assertRaises(self.failureException):
self.assertDictContainsSubset({'c': 1}, {'a': 1})
with self.assertRaises(self.failureException):
self.assertDictContainsSubset({'a': 1, 'c': 1}, {'a': 1})
with self.assertRaises(self.failureException):
self.assertDictContainsSubset({'a': 1, 'c': 1}, {'a': 1})
one = ''.join(chr(i) for i in range(255))
# this used to cause a UnicodeDecodeError constructing the failure msg
with self.assertRaises(self.failureException):
self.assertDictContainsSubset({'foo': one}, {'foo': '\uFFFD'})
def testAssertEqual(self):
equal_pairs = [
((), ()),
({}, {}),
([], []),
(set(), set()),
(frozenset(), frozenset())]
for a, b in equal_pairs:
# This mess of try excepts is to test the assertEqual behavior
# itself.
try:
self.assertEqual(a, b)
except self.failureException:
self.fail('assertEqual(%r, %r) failed' % (a, b))
try:
self.assertEqual(a, b, msg='foo')
except self.failureException:
self.fail('assertEqual(%r, %r) with msg= failed' % (a, b))
try:
self.assertEqual(a, b, 'foo')
except self.failureException:
self.fail('assertEqual(%r, %r) with third parameter failed' %
(a, b))
unequal_pairs = [
((), []),
({}, set()),
(set([4,1]), frozenset([4,2])),
(frozenset([4,5]), set([2,3])),
(set([3,4]), set([5,4]))]
for a, b in unequal_pairs:
self.assertRaises(self.failureException, self.assertEqual, a, b)
self.assertRaises(self.failureException, self.assertEqual, a, b,
'foo')
self.assertRaises(self.failureException, self.assertEqual, a, b,
msg='foo')
def testEquality(self):
self.assertListEqual([], [])
self.assertTupleEqual((), ())
self.assertSequenceEqual([], ())
a = [0, 'a', []]
b = []
self.assertRaises(unittest.TestCase.failureException,
self.assertListEqual, a, b)
self.assertRaises(unittest.TestCase.failureException,
self.assertListEqual, tuple(a), tuple(b))
self.assertRaises(unittest.TestCase.failureException,
self.assertSequenceEqual, a, tuple(b))
b.extend(a)
self.assertListEqual(a, b)
self.assertTupleEqual(tuple(a), tuple(b))
self.assertSequenceEqual(a, tuple(b))
self.assertSequenceEqual(tuple(a), b)
self.assertRaises(self.failureException, self.assertListEqual,
a, tuple(b))
self.assertRaises(self.failureException, self.assertTupleEqual,
tuple(a), b)
self.assertRaises(self.failureException, self.assertListEqual, None, b)
self.assertRaises(self.failureException, self.assertTupleEqual, None,
tuple(b))
self.assertRaises(self.failureException, self.assertSequenceEqual,
None, tuple(b))
self.assertRaises(self.failureException, self.assertListEqual, 1, 1)
self.assertRaises(self.failureException, self.assertTupleEqual, 1, 1)
self.assertRaises(self.failureException, self.assertSequenceEqual,
1, 1)
self.assertDictEqual({}, {})
c = { 'x': 1 }
d = {}
self.assertRaises(unittest.TestCase.failureException,
self.assertDictEqual, c, d)
d.update(c)
self.assertDictEqual(c, d)
d['x'] = 0
self.assertRaises(unittest.TestCase.failureException,
self.assertDictEqual, c, d, 'These are unequal')
self.assertRaises(self.failureException, self.assertDictEqual, None, d)
self.assertRaises(self.failureException, self.assertDictEqual, [], d)
self.assertRaises(self.failureException, self.assertDictEqual, 1, 1)
def testAssertSequenceEqualMaxDiff(self):
self.assertEqual(self.maxDiff, 80*8)
seq1 = 'a' + 'x' * 80**2
seq2 = 'b' + 'x' * 80**2
diff = '\n'.join(difflib.ndiff(pprint.pformat(seq1).splitlines(),
pprint.pformat(seq2).splitlines()))
# the +1 is the leading \n added by assertSequenceEqual
omitted = unittest.case.DIFF_OMITTED % (len(diff) + 1,)
self.maxDiff = len(diff)//2
try:
self.assertSequenceEqual(seq1, seq2)
except self.failureException as e:
msg = e.args[0]
else:
self.fail('assertSequenceEqual did not fail.')
self.assertLess(len(msg), len(diff))
self.assertIn(omitted, msg)
self.maxDiff = len(diff) * 2
try:
self.assertSequenceEqual(seq1, seq2)
except self.failureException as e:
msg = e.args[0]
else:
self.fail('assertSequenceEqual did not fail.')
self.assertGreater(len(msg), len(diff))
self.assertNotIn(omitted, msg)
self.maxDiff = None
try:
self.assertSequenceEqual(seq1, seq2)
except self.failureException as e:
msg = e.args[0]
else:
self.fail('assertSequenceEqual did not fail.')
self.assertGreater(len(msg), len(diff))
self.assertNotIn(omitted, msg)
def testTruncateMessage(self):
self.maxDiff = 1
message = self._truncateMessage('foo', 'bar')
omitted = unittest.case.DIFF_OMITTED % len('bar')
self.assertEqual(message, 'foo' + omitted)
self.maxDiff = None
message = self._truncateMessage('foo', 'bar')
self.assertEqual(message, 'foobar')
self.maxDiff = 4
message = self._truncateMessage('foo', 'bar')
self.assertEqual(message, 'foobar')
def testAssertDictEqualTruncates(self):
test = unittest.TestCase('assertEqual')
def truncate(msg, diff):
return 'foo'
test._truncateMessage = truncate
try:
test.assertDictEqual({}, {1: 0})
except self.failureException as e:
self.assertEqual(str(e), 'foo')
else:
self.fail('assertDictEqual did not fail')
def testAssertMultiLineEqualTruncates(self):
test = unittest.TestCase('assertEqual')
def truncate(msg, diff):
return 'foo'
test._truncateMessage = truncate
try:
test.assertMultiLineEqual('foo', 'bar')
except self.failureException as e:
self.assertEqual(str(e), 'foo')
else:
self.fail('assertMultiLineEqual did not fail')
def testAssertEqual_diffThreshold(self):
# check threshold value
self.assertEqual(self._diffThreshold, 2**16)
# disable madDiff to get diff markers
self.maxDiff = None
# set a lower threshold value and add a cleanup to restore it
old_threshold = self._diffThreshold
self._diffThreshold = 2**5
self.addCleanup(lambda: setattr(self, '_diffThreshold', old_threshold))
# under the threshold: diff marker (^) in error message
s = 'x' * (2**4)
with self.assertRaises(self.failureException) as cm:
self.assertEqual(s + 'a', s + 'b')
self.assertIn('^', str(cm.exception))
self.assertEqual(s + 'a', s + 'a')
# over the threshold: diff not used and marker (^) not in error message
s = 'x' * (2**6)
# if the path that uses difflib is taken, _truncateMessage will be
# called -- replace it with explodingTruncation to verify that this
# doesn't happen
def explodingTruncation(message, diff):
raise SystemError('this should not be raised')
old_truncate = self._truncateMessage
self._truncateMessage = explodingTruncation
self.addCleanup(lambda: setattr(self, '_truncateMessage', old_truncate))
s1, s2 = s + 'a', s + 'b'
with self.assertRaises(self.failureException) as cm:
self.assertEqual(s1, s2)
self.assertNotIn('^', str(cm.exception))
self.assertEqual(str(cm.exception), '%r != %r' % (s1, s2))
self.assertEqual(s + 'a', s + 'a')
def testAssertEqual_shorten(self):
# set a lower threshold value and add a cleanup to restore it
old_threshold = self._diffThreshold
self._diffThreshold = 0
self.addCleanup(lambda: setattr(self, '_diffThreshold', old_threshold))
s = 'x' * 100
s1, s2 = s + 'a', s + 'b'
with self.assertRaises(self.failureException) as cm:
self.assertEqual(s1, s2)
c = 'xxxx[35 chars]' + 'x' * 61
self.assertEqual(str(cm.exception), "'%sa' != '%sb'" % (c, c))
self.assertEqual(s + 'a', s + 'a')
p = 'y' * 50
s1, s2 = s + 'a' + p, s + 'b' + p
with self.assertRaises(self.failureException) as cm:
self.assertEqual(s1, s2)
c = 'xxxx[85 chars]xxxxxxxxxxx'
self.assertEqual(str(cm.exception), "'%sa%s' != '%sb%s'" % (c, p, c, p))
p = 'y' * 100
s1, s2 = s + 'a' + p, s + 'b' + p
with self.assertRaises(self.failureException) as cm:
self.assertEqual(s1, s2)
c = 'xxxx[91 chars]xxxxx'
d = 'y' * 40 + '[56 chars]yyyy'
self.assertEqual(str(cm.exception), "'%sa%s' != '%sb%s'" % (c, d, c, d))
def testAssertCountEqual(self):
a = object()
self.assertCountEqual([1, 2, 3], [3, 2, 1])
self.assertCountEqual(['foo', 'bar', 'baz'], ['bar', 'baz', 'foo'])
self.assertCountEqual([a, a, 2, 2, 3], (a, 2, 3, a, 2))
self.assertCountEqual([1, "2", "a", "a"], ["a", "2", True, "a"])
self.assertRaises(self.failureException, self.assertCountEqual,
[1, 2] + [3] * 100, [1] * 100 + [2, 3])
self.assertRaises(self.failureException, self.assertCountEqual,
[1, "2", "a", "a"], ["a", "2", True, 1])
self.assertRaises(self.failureException, self.assertCountEqual,
[10], [10, 11])
self.assertRaises(self.failureException, self.assertCountEqual,
[10, 11], [10])
self.assertRaises(self.failureException, self.assertCountEqual,
[10, 11, 10], [10, 11])
# Test that sequences of unhashable objects can be tested for sameness:
self.assertCountEqual([[1, 2], [3, 4], 0], [False, [3, 4], [1, 2]])
# Test that iterator of unhashable objects can be tested for sameness:
self.assertCountEqual(iter([1, 2, [], 3, 4]),
iter([1, 2, [], 3, 4]))
# hashable types, but not orderable
self.assertRaises(self.failureException, self.assertCountEqual,
[], [divmod, 'x', 1, 5j, 2j, frozenset()])
# comparing dicts
self.assertCountEqual([{'a': 1}, {'b': 2}], [{'b': 2}, {'a': 1}])
# comparing heterogenous non-hashable sequences
self.assertCountEqual([1, 'x', divmod, []], [divmod, [], 'x', 1])
self.assertRaises(self.failureException, self.assertCountEqual,
[], [divmod, [], 'x', 1, 5j, 2j, set()])
self.assertRaises(self.failureException, self.assertCountEqual,
[[1]], [[2]])
# Same elements, but not same sequence length
self.assertRaises(self.failureException, self.assertCountEqual,
[1, 1, 2], [2, 1])
self.assertRaises(self.failureException, self.assertCountEqual,
[1, 1, "2", "a", "a"], ["2", "2", True, "a"])
self.assertRaises(self.failureException, self.assertCountEqual,
[1, {'b': 2}, None, True], [{'b': 2}, True, None])
# Same elements which don't reliably compare, in
# different order, see issue 10242
a = [{2,4}, {1,2}]
b = a[::-1]
self.assertCountEqual(a, b)
# test utility functions supporting assertCountEqual()
diffs = set(unittest.util._count_diff_all_purpose('aaabccd', 'abbbcce'))
expected = {(3,1,'a'), (1,3,'b'), (1,0,'d'), (0,1,'e')}
self.assertEqual(diffs, expected)
diffs = unittest.util._count_diff_all_purpose([[]], [])
self.assertEqual(diffs, [(1, 0, [])])
diffs = set(unittest.util._count_diff_hashable('aaabccd', 'abbbcce'))
expected = {(3,1,'a'), (1,3,'b'), (1,0,'d'), (0,1,'e')}
self.assertEqual(diffs, expected)
def testAssertSetEqual(self):
set1 = set()
set2 = set()
self.assertSetEqual(set1, set2)
self.assertRaises(self.failureException, self.assertSetEqual, None, set2)
self.assertRaises(self.failureException, self.assertSetEqual, [], set2)
self.assertRaises(self.failureException, self.assertSetEqual, set1, None)
self.assertRaises(self.failureException, self.assertSetEqual, set1, [])
set1 = set(['a'])
set2 = set()
self.assertRaises(self.failureException, self.assertSetEqual, set1, set2)
set1 = set(['a'])
set2 = set(['a'])
self.assertSetEqual(set1, set2)
set1 = set(['a'])
set2 = set(['a', 'b'])
self.assertRaises(self.failureException, self.assertSetEqual, set1, set2)
set1 = set(['a'])
set2 = frozenset(['a', 'b'])
self.assertRaises(self.failureException, self.assertSetEqual, set1, set2)
set1 = set(['a', 'b'])
set2 = frozenset(['a', 'b'])
self.assertSetEqual(set1, set2)
set1 = set()
set2 = "foo"
self.assertRaises(self.failureException, self.assertSetEqual, set1, set2)
self.assertRaises(self.failureException, self.assertSetEqual, set2, set1)
# make sure any string formatting is tuple-safe
set1 = set([(0, 1), (2, 3)])
set2 = set([(4, 5)])
self.assertRaises(self.failureException, self.assertSetEqual, set1, set2)
def testInequality(self):
# Try ints
self.assertGreater(2, 1)
self.assertGreaterEqual(2, 1)
self.assertGreaterEqual(1, 1)
self.assertLess(1, 2)
self.assertLessEqual(1, 2)
self.assertLessEqual(1, 1)
self.assertRaises(self.failureException, self.assertGreater, 1, 2)
self.assertRaises(self.failureException, self.assertGreater, 1, 1)
self.assertRaises(self.failureException, self.assertGreaterEqual, 1, 2)
self.assertRaises(self.failureException, self.assertLess, 2, 1)
self.assertRaises(self.failureException, self.assertLess, 1, 1)
self.assertRaises(self.failureException, self.assertLessEqual, 2, 1)
# Try Floats
self.assertGreater(1.1, 1.0)
self.assertGreaterEqual(1.1, 1.0)
self.assertGreaterEqual(1.0, 1.0)
self.assertLess(1.0, 1.1)
self.assertLessEqual(1.0, 1.1)
self.assertLessEqual(1.0, 1.0)
self.assertRaises(self.failureException, self.assertGreater, 1.0, 1.1)
self.assertRaises(self.failureException, self.assertGreater, 1.0, 1.0)
self.assertRaises(self.failureException, self.assertGreaterEqual, 1.0, 1.1)
self.assertRaises(self.failureException, self.assertLess, 1.1, 1.0)
self.assertRaises(self.failureException, self.assertLess, 1.0, 1.0)
self.assertRaises(self.failureException, self.assertLessEqual, 1.1, 1.0)
# Try Strings
self.assertGreater('bug', 'ant')
self.assertGreaterEqual('bug', 'ant')
self.assertGreaterEqual('ant', 'ant')
self.assertLess('ant', 'bug')
self.assertLessEqual('ant', 'bug')
self.assertLessEqual('ant', 'ant')
self.assertRaises(self.failureException, self.assertGreater, 'ant', 'bug')
self.assertRaises(self.failureException, self.assertGreater, 'ant', 'ant')
self.assertRaises(self.failureException, self.assertGreaterEqual, 'ant', 'bug')
self.assertRaises(self.failureException, self.assertLess, 'bug', 'ant')
self.assertRaises(self.failureException, self.assertLess, 'ant', 'ant')
self.assertRaises(self.failureException, self.assertLessEqual, 'bug', 'ant')
# Try bytes
self.assertGreater(b'bug', b'ant')
self.assertGreaterEqual(b'bug', b'ant')
self.assertGreaterEqual(b'ant', b'ant')
self.assertLess(b'ant', b'bug')
self.assertLessEqual(b'ant', b'bug')
self.assertLessEqual(b'ant', b'ant')
self.assertRaises(self.failureException, self.assertGreater, b'ant', b'bug')
self.assertRaises(self.failureException, self.assertGreater, b'ant', b'ant')
self.assertRaises(self.failureException, self.assertGreaterEqual, b'ant',
b'bug')
self.assertRaises(self.failureException, self.assertLess, b'bug', b'ant')
self.assertRaises(self.failureException, self.assertLess, b'ant', b'ant')
self.assertRaises(self.failureException, self.assertLessEqual, b'bug', b'ant')
def testAssertMultiLineEqual(self):
sample_text = """\
http://www.python.org/doc/2.3/lib/module-unittest.html
test case
A test case is the smallest unit of testing. [...]
"""
revised_sample_text = """\
http://www.python.org/doc/2.4.1/lib/module-unittest.html
test case
A test case is the smallest unit of testing. [...] You may provide your
own implementation that does not subclass from TestCase, of course.
"""
sample_text_error = """\
- http://www.python.org/doc/2.3/lib/module-unittest.html
? ^
+ http://www.python.org/doc/2.4.1/lib/module-unittest.html
? ^^^
test case
- A test case is the smallest unit of testing. [...]
+ A test case is the smallest unit of testing. [...] You may provide your
? +++++++++++++++++++++
+ own implementation that does not subclass from TestCase, of course.
"""
self.maxDiff = None
try:
self.assertMultiLineEqual(sample_text, revised_sample_text)
except self.failureException as e:
# need to remove the first line of the error message
error = str(e).split('\n', 1)[1]
self.assertEqual(sample_text_error, error)
def testAssertEqualSingleLine(self):
sample_text = "laden swallows fly slowly"
revised_sample_text = "unladen swallows fly quickly"
sample_text_error = """\
- laden swallows fly slowly
? ^^^^
+ unladen swallows fly quickly
? ++ ^^^^^
"""
try:
self.assertEqual(sample_text, revised_sample_text)
except self.failureException as e:
# need to remove the first line of the error message
error = str(e).split('\n', 1)[1]
self.assertEqual(sample_text_error, error)
def testEqualityBytesWarning(self):
if sys.flags.bytes_warning:
def bytes_warning():
return self.assertWarnsRegex(BytesWarning,
'Comparison between bytes and string')
else:
def bytes_warning():
return contextlib.ExitStack()
with bytes_warning(), self.assertRaises(self.failureException):
self.assertEqual('a', b'a')
with bytes_warning():
self.assertNotEqual('a', b'a')
a = [0, 'a']
b = [0, b'a']
with bytes_warning(), self.assertRaises(self.failureException):
self.assertListEqual(a, b)
with bytes_warning(), self.assertRaises(self.failureException):
self.assertTupleEqual(tuple(a), tuple(b))
with bytes_warning(), self.assertRaises(self.failureException):
self.assertSequenceEqual(a, tuple(b))
with bytes_warning(), self.assertRaises(self.failureException):
self.assertSequenceEqual(tuple(a), b)
with bytes_warning(), self.assertRaises(self.failureException):
self.assertSequenceEqual('a', b'a')
with bytes_warning(), self.assertRaises(self.failureException):
self.assertSetEqual(set(a), set(b))
with self.assertRaises(self.failureException):
self.assertListEqual(a, tuple(b))
with self.assertRaises(self.failureException):
self.assertTupleEqual(tuple(a), b)
a = [0, b'a']
b = [0]
with self.assertRaises(self.failureException):
self.assertListEqual(a, b)
with self.assertRaises(self.failureException):
self.assertTupleEqual(tuple(a), tuple(b))
with self.assertRaises(self.failureException):
self.assertSequenceEqual(a, tuple(b))
with self.assertRaises(self.failureException):
self.assertSequenceEqual(tuple(a), b)
with self.assertRaises(self.failureException):
self.assertSetEqual(set(a), set(b))
a = [0]
b = [0, b'a']
with self.assertRaises(self.failureException):
self.assertListEqual(a, b)
with self.assertRaises(self.failureException):
self.assertTupleEqual(tuple(a), tuple(b))
with self.assertRaises(self.failureException):
self.assertSequenceEqual(a, tuple(b))
with self.assertRaises(self.failureException):
self.assertSequenceEqual(tuple(a), b)
with self.assertRaises(self.failureException):
self.assertSetEqual(set(a), set(b))
with bytes_warning(), self.assertRaises(self.failureException):
self.assertDictEqual({'a': 0}, {b'a': 0})
with self.assertRaises(self.failureException):
self.assertDictEqual({}, {b'a': 0})
with self.assertRaises(self.failureException):
self.assertDictEqual({b'a': 0}, {})
with self.assertRaises(self.failureException):
self.assertCountEqual([b'a', b'a'], [b'a', b'a', b'a'])
with bytes_warning():
self.assertCountEqual(['a', b'a'], ['a', b'a'])
with bytes_warning(), self.assertRaises(self.failureException):
self.assertCountEqual(['a', 'a'], [b'a', b'a'])
with bytes_warning(), self.assertRaises(self.failureException):
self.assertCountEqual(['a', 'a', []], [b'a', b'a', []])
def testAssertIsNone(self):
self.assertIsNone(None)
self.assertRaises(self.failureException, self.assertIsNone, False)
self.assertIsNotNone('DjZoPloGears on Rails')
self.assertRaises(self.failureException, self.assertIsNotNone, None)
def testAssertRegex(self):
self.assertRegex('asdfabasdf', r'ab+')
self.assertRaises(self.failureException, self.assertRegex,
'saaas', r'aaaa')
def testAssertRaisesCallable(self):
class ExceptionMock(Exception):
pass
def Stub():
raise ExceptionMock('We expect')
self.assertRaises(ExceptionMock, Stub)
# A tuple of exception classes is accepted
self.assertRaises((ValueError, ExceptionMock), Stub)
# *args and **kwargs also work
self.assertRaises(ValueError, int, '19', base=8)
# Failure when no exception is raised
with self.assertRaises(self.failureException):
self.assertRaises(ExceptionMock, lambda: 0)
# Failure when the function is None
with self.assertWarns(DeprecationWarning):
self.assertRaises(ExceptionMock, None)
# Failure when another exception is raised
with self.assertRaises(ExceptionMock):
self.assertRaises(ValueError, Stub)
def testAssertRaisesContext(self):
class ExceptionMock(Exception):
pass
def Stub():
raise ExceptionMock('We expect')
with self.assertRaises(ExceptionMock):
Stub()
# A tuple of exception classes is accepted
with self.assertRaises((ValueError, ExceptionMock)) as cm:
Stub()
# The context manager exposes caught exception
self.assertIsInstance(cm.exception, ExceptionMock)
self.assertEqual(cm.exception.args[0], 'We expect')
# *args and **kwargs also work
with self.assertRaises(ValueError):
int('19', base=8)
# Failure when no exception is raised
with self.assertRaises(self.failureException):
with self.assertRaises(ExceptionMock):
pass
# Custom message
with self.assertRaisesRegex(self.failureException, 'foobar'):
with self.assertRaises(ExceptionMock, msg='foobar'):
pass
# Invalid keyword argument
with self.assertWarnsRegex(DeprecationWarning, 'foobar'), \
self.assertRaises(AssertionError):
with self.assertRaises(ExceptionMock, foobar=42):
pass
# Failure when another exception is raised
with self.assertRaises(ExceptionMock):
self.assertRaises(ValueError, Stub)
def testAssertRaisesNoExceptionType(self):
with self.assertRaises(TypeError):
self.assertRaises()
with self.assertRaises(TypeError):
self.assertRaises(1)
with self.assertRaises(TypeError):
self.assertRaises(object)
with self.assertRaises(TypeError):
self.assertRaises((ValueError, 1))
with self.assertRaises(TypeError):
self.assertRaises((ValueError, object))
def testAssertRaisesRefcount(self):
# bpo-23890: assertRaises() must not keep objects alive longer
# than expected
def func() :
try:
raise ValueError
except ValueError:
raise ValueError
refcount = sys.getrefcount(func)
self.assertRaises(ValueError, func)
self.assertEqual(refcount, sys.getrefcount(func))
def testAssertRaisesRegex(self):
class ExceptionMock(Exception):
pass
def Stub():
raise ExceptionMock('We expect')
self.assertRaisesRegex(ExceptionMock, re.compile('expect$'), Stub)
self.assertRaisesRegex(ExceptionMock, 'expect$', Stub)
with self.assertWarns(DeprecationWarning):
self.assertRaisesRegex(ExceptionMock, 'expect$', None)
def testAssertNotRaisesRegex(self):
self.assertRaisesRegex(
self.failureException, '^Exception not raised by <lambda>$',
self.assertRaisesRegex, Exception, re.compile('x'),
lambda: None)
self.assertRaisesRegex(
self.failureException, '^Exception not raised by <lambda>$',
self.assertRaisesRegex, Exception, 'x',
lambda: None)
# Custom message
with self.assertRaisesRegex(self.failureException, 'foobar'):
with self.assertRaisesRegex(Exception, 'expect', msg='foobar'):
pass
# Invalid keyword argument
with self.assertWarnsRegex(DeprecationWarning, 'foobar'), \
self.assertRaises(AssertionError):
with self.assertRaisesRegex(Exception, 'expect', foobar=42):
pass
def testAssertRaisesRegexInvalidRegex(self):
# Issue 20145.
class MyExc(Exception):
pass
self.assertRaises(TypeError, self.assertRaisesRegex, MyExc, lambda: True)
def testAssertWarnsRegexInvalidRegex(self):
# Issue 20145.
class MyWarn(Warning):
pass
self.assertRaises(TypeError, self.assertWarnsRegex, MyWarn, lambda: True)
def testAssertRaisesRegexMismatch(self):
def Stub():
raise Exception('Unexpected')
self.assertRaisesRegex(
self.failureException,
r'"\^Expected\$" does not match "Unexpected"',
self.assertRaisesRegex, Exception, '^Expected$',
Stub)
self.assertRaisesRegex(
self.failureException,
r'"\^Expected\$" does not match "Unexpected"',
self.assertRaisesRegex, Exception,
re.compile('^Expected$'), Stub)
def testAssertRaisesExcValue(self):
class ExceptionMock(Exception):
pass
def Stub(foo):
raise ExceptionMock(foo)
v = "particular value"
ctx = self.assertRaises(ExceptionMock)
with ctx:
Stub(v)
e = ctx.exception
self.assertIsInstance(e, ExceptionMock)
self.assertEqual(e.args[0], v)
def testAssertRaisesRegexNoExceptionType(self):
with self.assertRaises(TypeError):
self.assertRaisesRegex()
with self.assertRaises(TypeError):
self.assertRaisesRegex(ValueError)
with self.assertRaises(TypeError):
self.assertRaisesRegex(1, 'expect')
with self.assertRaises(TypeError):
self.assertRaisesRegex(object, 'expect')
with self.assertRaises(TypeError):
self.assertRaisesRegex((ValueError, 1), 'expect')
with self.assertRaises(TypeError):
self.assertRaisesRegex((ValueError, object), 'expect')
def testAssertWarnsCallable(self):
def _runtime_warn():
warnings.warn("foo", RuntimeWarning)
# Success when the right warning is triggered, even several times
self.assertWarns(RuntimeWarning, _runtime_warn)
self.assertWarns(RuntimeWarning, _runtime_warn)
# A tuple of warning classes is accepted
self.assertWarns((DeprecationWarning, RuntimeWarning), _runtime_warn)
# *args and **kwargs also work
self.assertWarns(RuntimeWarning,
warnings.warn, "foo", category=RuntimeWarning)
# Failure when no warning is triggered
with self.assertRaises(self.failureException):
self.assertWarns(RuntimeWarning, lambda: 0)
# Failure when the function is None
with self.assertWarns(DeprecationWarning):
self.assertWarns(RuntimeWarning, None)
# Failure when another warning is triggered
with warnings.catch_warnings():
# Force default filter (in case tests are run with -We)
warnings.simplefilter("default", RuntimeWarning)
with self.assertRaises(self.failureException):
self.assertWarns(DeprecationWarning, _runtime_warn)
# Filters for other warnings are not modified
with warnings.catch_warnings():
warnings.simplefilter("error", RuntimeWarning)
with self.assertRaises(RuntimeWarning):
self.assertWarns(DeprecationWarning, _runtime_warn)
def testAssertWarnsContext(self):
# Believe it or not, it is preferable to duplicate all tests above,
# to make sure the __warningregistry__ $@ is circumvented correctly.
def _runtime_warn():
warnings.warn("foo", RuntimeWarning)
_runtime_warn_lineno = inspect.getsourcelines(_runtime_warn)[1]
with self.assertWarns(RuntimeWarning) as cm:
_runtime_warn()
# A tuple of warning classes is accepted
with self.assertWarns((DeprecationWarning, RuntimeWarning)) as cm:
_runtime_warn()
# The context manager exposes various useful attributes
self.assertIsInstance(cm.warning, RuntimeWarning)
self.assertEqual(cm.warning.args[0], "foo")
self.assertIn("test_case.py", cm.filename)
self.assertEqual(cm.lineno, _runtime_warn_lineno + 1)
# Same with several warnings
with self.assertWarns(RuntimeWarning):
_runtime_warn()
_runtime_warn()
with self.assertWarns(RuntimeWarning):
warnings.warn("foo", category=RuntimeWarning)
# Failure when no warning is triggered
with self.assertRaises(self.failureException):
with self.assertWarns(RuntimeWarning):
pass
# Custom message
with self.assertRaisesRegex(self.failureException, 'foobar'):
with self.assertWarns(RuntimeWarning, msg='foobar'):
pass
# Invalid keyword argument
with self.assertWarnsRegex(DeprecationWarning, 'foobar'), \
self.assertRaises(AssertionError):
with self.assertWarns(RuntimeWarning, foobar=42):
pass
# Failure when another warning is triggered
with warnings.catch_warnings():
# Force default filter (in case tests are run with -We)
warnings.simplefilter("default", RuntimeWarning)
with self.assertRaises(self.failureException):
with self.assertWarns(DeprecationWarning):
_runtime_warn()
# Filters for other warnings are not modified
with warnings.catch_warnings():
warnings.simplefilter("error", RuntimeWarning)
with self.assertRaises(RuntimeWarning):
with self.assertWarns(DeprecationWarning):
_runtime_warn()
def testAssertWarnsNoExceptionType(self):
with self.assertRaises(TypeError):
self.assertWarns()
with self.assertRaises(TypeError):
self.assertWarns(1)
with self.assertRaises(TypeError):
self.assertWarns(object)
with self.assertRaises(TypeError):
self.assertWarns((UserWarning, 1))
with self.assertRaises(TypeError):
self.assertWarns((UserWarning, object))
with self.assertRaises(TypeError):
self.assertWarns((UserWarning, Exception))
def testAssertWarnsRegexCallable(self):
def _runtime_warn(msg):
warnings.warn(msg, RuntimeWarning)
self.assertWarnsRegex(RuntimeWarning, "o+",
_runtime_warn, "foox")
# Failure when no warning is triggered
with self.assertRaises(self.failureException):
self.assertWarnsRegex(RuntimeWarning, "o+",
lambda: 0)
# Failure when the function is None
with self.assertWarns(DeprecationWarning):
self.assertWarnsRegex(RuntimeWarning, "o+", None)
# Failure when another warning is triggered
with warnings.catch_warnings():
# Force default filter (in case tests are run with -We)
warnings.simplefilter("default", RuntimeWarning)
with self.assertRaises(self.failureException):
self.assertWarnsRegex(DeprecationWarning, "o+",
_runtime_warn, "foox")
# Failure when message doesn't match
with self.assertRaises(self.failureException):
self.assertWarnsRegex(RuntimeWarning, "o+",
_runtime_warn, "barz")
# A little trickier: we ask RuntimeWarnings to be raised, and then
# check for some of them. It is implementation-defined whether
# non-matching RuntimeWarnings are simply re-raised, or produce a
# failureException.
with warnings.catch_warnings():
warnings.simplefilter("error", RuntimeWarning)
with self.assertRaises((RuntimeWarning, self.failureException)):
self.assertWarnsRegex(RuntimeWarning, "o+",
_runtime_warn, "barz")
def testAssertWarnsRegexContext(self):
# Same as above, but with assertWarnsRegex as a context manager
def _runtime_warn(msg):
warnings.warn(msg, RuntimeWarning)
_runtime_warn_lineno = inspect.getsourcelines(_runtime_warn)[1]
with self.assertWarnsRegex(RuntimeWarning, "o+") as cm:
_runtime_warn("foox")
self.assertIsInstance(cm.warning, RuntimeWarning)
self.assertEqual(cm.warning.args[0], "foox")
self.assertIn("test_case.py", cm.filename)
self.assertEqual(cm.lineno, _runtime_warn_lineno + 1)
# Failure when no warning is triggered
with self.assertRaises(self.failureException):
with self.assertWarnsRegex(RuntimeWarning, "o+"):
pass
# Custom message
with self.assertRaisesRegex(self.failureException, 'foobar'):
with self.assertWarnsRegex(RuntimeWarning, 'o+', msg='foobar'):
pass
# Invalid keyword argument
with self.assertWarnsRegex(DeprecationWarning, 'foobar'), \
self.assertRaises(AssertionError):
with self.assertWarnsRegex(RuntimeWarning, 'o+', foobar=42):
pass
# Failure when another warning is triggered
with warnings.catch_warnings():
# Force default filter (in case tests are run with -We)
warnings.simplefilter("default", RuntimeWarning)
with self.assertRaises(self.failureException):
with self.assertWarnsRegex(DeprecationWarning, "o+"):
_runtime_warn("foox")
# Failure when message doesn't match
with self.assertRaises(self.failureException):
with self.assertWarnsRegex(RuntimeWarning, "o+"):
_runtime_warn("barz")
# A little trickier: we ask RuntimeWarnings to be raised, and then
# check for some of them. It is implementation-defined whether
# non-matching RuntimeWarnings are simply re-raised, or produce a
# failureException.
with warnings.catch_warnings():
warnings.simplefilter("error", RuntimeWarning)
with self.assertRaises((RuntimeWarning, self.failureException)):
with self.assertWarnsRegex(RuntimeWarning, "o+"):
_runtime_warn("barz")
def testAssertWarnsRegexNoExceptionType(self):
with self.assertRaises(TypeError):
self.assertWarnsRegex()
with self.assertRaises(TypeError):
self.assertWarnsRegex(UserWarning)
with self.assertRaises(TypeError):
self.assertWarnsRegex(1, 'expect')
with self.assertRaises(TypeError):
self.assertWarnsRegex(object, 'expect')
with self.assertRaises(TypeError):
self.assertWarnsRegex((UserWarning, 1), 'expect')
with self.assertRaises(TypeError):
self.assertWarnsRegex((UserWarning, object), 'expect')
with self.assertRaises(TypeError):
self.assertWarnsRegex((UserWarning, Exception), 'expect')
@contextlib.contextmanager
def assertNoStderr(self):
with captured_stderr() as buf:
yield
self.assertEqual(buf.getvalue(), "")
def assertLogRecords(self, records, matches):
self.assertEqual(len(records), len(matches))
for rec, match in zip(records, matches):
self.assertIsInstance(rec, logging.LogRecord)
for k, v in match.items():
self.assertEqual(getattr(rec, k), v)
def testAssertLogsDefaults(self):
# defaults: root logger, level INFO
with self.assertNoStderr():
with self.assertLogs() as cm:
log_foo.info("1")
log_foobar.debug("2")
self.assertEqual(cm.output, ["INFO:foo:1"])
self.assertLogRecords(cm.records, [{'name': 'foo'}])
def testAssertLogsTwoMatchingMessages(self):
# Same, but with two matching log messages
with self.assertNoStderr():
with self.assertLogs() as cm:
log_foo.info("1")
log_foobar.debug("2")
log_quux.warning("3")
self.assertEqual(cm.output, ["INFO:foo:1", "WARNING:quux:3"])
self.assertLogRecords(cm.records,
[{'name': 'foo'}, {'name': 'quux'}])
def checkAssertLogsPerLevel(self, level):
# Check level filtering
with self.assertNoStderr():
with self.assertLogs(level=level) as cm:
log_foo.warning("1")
log_foobar.error("2")
log_quux.critical("3")
self.assertEqual(cm.output, ["ERROR:foo.bar:2", "CRITICAL:quux:3"])
self.assertLogRecords(cm.records,
[{'name': 'foo.bar'}, {'name': 'quux'}])
def testAssertLogsPerLevel(self):
self.checkAssertLogsPerLevel(logging.ERROR)
self.checkAssertLogsPerLevel('ERROR')
def checkAssertLogsPerLogger(self, logger):
# Check per-logger filtering
with self.assertNoStderr():
with self.assertLogs(level='DEBUG') as outer_cm:
with self.assertLogs(logger, level='DEBUG') as cm:
log_foo.info("1")
log_foobar.debug("2")
log_quux.warning("3")
self.assertEqual(cm.output, ["INFO:foo:1", "DEBUG:foo.bar:2"])
self.assertLogRecords(cm.records,
[{'name': 'foo'}, {'name': 'foo.bar'}])
# The outer catchall caught the quux log
self.assertEqual(outer_cm.output, ["WARNING:quux:3"])
def testAssertLogsPerLogger(self):
self.checkAssertLogsPerLogger(logging.getLogger('foo'))
self.checkAssertLogsPerLogger('foo')
def testAssertLogsFailureNoLogs(self):
# Failure due to no logs
with self.assertNoStderr():
with self.assertRaises(self.failureException):
with self.assertLogs():
pass
def testAssertLogsFailureLevelTooHigh(self):
# Failure due to level too high
with self.assertNoStderr():
with self.assertRaises(self.failureException):
with self.assertLogs(level='WARNING'):
log_foo.info("1")
def testAssertLogsFailureMismatchingLogger(self):
# Failure due to mismatching logger (and the logged message is
# passed through)
with self.assertLogs('quux', level='ERROR'):
with self.assertRaises(self.failureException):
with self.assertLogs('foo'):
log_quux.error("1")
def testDeprecatedMethodNames(self):
"""
Test that the deprecated methods raise a DeprecationWarning. See #9424.
"""
old = (
(self.failIfEqual, (3, 5)),
(self.assertNotEquals, (3, 5)),
(self.failUnlessEqual, (3, 3)),
(self.assertEquals, (3, 3)),
(self.failUnlessAlmostEqual, (2.0, 2.0)),
(self.assertAlmostEquals, (2.0, 2.0)),
(self.failIfAlmostEqual, (3.0, 5.0)),
(self.assertNotAlmostEquals, (3.0, 5.0)),
(self.failUnless, (True,)),
(self.assert_, (True,)),
(self.failUnlessRaises, (TypeError, lambda _: 3.14 + 'spam')),
(self.failIf, (False,)),
(self.assertDictContainsSubset, (dict(a=1, b=2), dict(a=1, b=2, c=3))),
(self.assertRaisesRegexp, (KeyError, 'foo', lambda: {}['foo'])),
(self.assertRegexpMatches, ('bar', 'bar')),
)
for meth, args in old:
with self.assertWarns(DeprecationWarning):
meth(*args)
# disable this test for now. When the version where the fail* methods will
# be removed is decided, re-enable it and update the version
def _testDeprecatedFailMethods(self):
"""Test that the deprecated fail* methods get removed in 3.x"""
if sys.version_info[:2] < (3, 3):
return
deprecated_names = [
'failIfEqual', 'failUnlessEqual', 'failUnlessAlmostEqual',
'failIfAlmostEqual', 'failUnless', 'failUnlessRaises', 'failIf',
'assertDictContainsSubset',
]
for deprecated_name in deprecated_names:
with self.assertRaises(AttributeError):
getattr(self, deprecated_name) # remove these in 3.x
def testDeepcopy(self):
# Issue: 5660
class TestableTest(unittest.TestCase):
def testNothing(self):
pass
test = TestableTest('testNothing')
# This shouldn't blow up
deepcopy(test)
def testPickle(self):
# Issue 10326
# Can't use TestCase classes defined in Test class as
# pickle does not work with inner classes
test = unittest.TestCase('run')
for protocol in range(pickle.HIGHEST_PROTOCOL + 1):
# blew up prior to fix
pickled_test = pickle.dumps(test, protocol=protocol)
unpickled_test = pickle.loads(pickled_test)
self.assertEqual(test, unpickled_test)
# exercise the TestCase instance in a way that will invoke
# the type equality lookup mechanism
unpickled_test.assertEqual(set(), set())
def testKeyboardInterrupt(self):
def _raise(self=None):
raise KeyboardInterrupt
def nothing(self):
pass
class Test1(unittest.TestCase):
test_something = _raise
class Test2(unittest.TestCase):
setUp = _raise
test_something = nothing
class Test3(unittest.TestCase):
test_something = nothing
tearDown = _raise
class Test4(unittest.TestCase):
def test_something(self):
self.addCleanup(_raise)
for klass in (Test1, Test2, Test3, Test4):
with self.assertRaises(KeyboardInterrupt):
klass('test_something').run()
def testSkippingEverywhere(self):
def _skip(self=None):
raise unittest.SkipTest('some reason')
def nothing(self):
pass
class Test1(unittest.TestCase):
test_something = _skip
class Test2(unittest.TestCase):
setUp = _skip
test_something = nothing
class Test3(unittest.TestCase):
test_something = nothing
tearDown = _skip
class Test4(unittest.TestCase):
def test_something(self):
self.addCleanup(_skip)
for klass in (Test1, Test2, Test3, Test4):
result = unittest.TestResult()
klass('test_something').run(result)
self.assertEqual(len(result.skipped), 1)
self.assertEqual(result.testsRun, 1)
def testSystemExit(self):
def _raise(self=None):
raise SystemExit
def nothing(self):
pass
class Test1(unittest.TestCase):
test_something = _raise
class Test2(unittest.TestCase):
setUp = _raise
test_something = nothing
class Test3(unittest.TestCase):
test_something = nothing
tearDown = _raise
class Test4(unittest.TestCase):
def test_something(self):
self.addCleanup(_raise)
for klass in (Test1, Test2, Test3, Test4):
result = unittest.TestResult()
klass('test_something').run(result)
self.assertEqual(len(result.errors), 1)
self.assertEqual(result.testsRun, 1)
@support.cpython_only
def testNoCycles(self):
case = unittest.TestCase()
wr = weakref.ref(case)
with support.disable_gc():
del case
self.assertFalse(wr())
def test_no_exception_leak(self):
# Issue #19880: TestCase.run() should not keep a reference
# to the exception
class MyException(Exception):
ninstance = 0
def __init__(self):
MyException.ninstance += 1
Exception.__init__(self)
def __del__(self):
MyException.ninstance -= 1
class TestCase(unittest.TestCase):
def test1(self):
raise MyException()
@unittest.expectedFailure
def test2(self):
raise MyException()
for method_name in ('test1', 'test2'):
testcase = TestCase(method_name)
testcase.run()
self.assertEqual(MyException.ninstance, 0)
if __name__ == "__main__":
unittest.main()
| 72,998 | 1,848 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/test_break.py | import gc
import io
import os
import sys
import signal
import weakref
import unittest
@unittest.skipUnless(hasattr(os, 'kill'), "Test requires os.kill")
@unittest.skipIf(sys.platform =="win32", "Test cannot run on Windows")
@unittest.skipIf(sys.platform == 'freebsd6', "Test kills regrtest on freebsd6 "
"if threads have been used")
class TestBreak(unittest.TestCase):
int_handler = None
def setUp(self):
self._default_handler = signal.getsignal(signal.SIGINT)
if self.int_handler is not None:
signal.signal(signal.SIGINT, self.int_handler)
def tearDown(self):
signal.signal(signal.SIGINT, self._default_handler)
unittest.signals._results = weakref.WeakKeyDictionary()
unittest.signals._interrupt_handler = None
def testInstallHandler(self):
default_handler = signal.getsignal(signal.SIGINT)
unittest.installHandler()
self.assertNotEqual(signal.getsignal(signal.SIGINT), default_handler)
try:
pid = os.getpid()
os.kill(pid, signal.SIGINT)
except KeyboardInterrupt:
self.fail("KeyboardInterrupt not handled")
self.assertTrue(unittest.signals._interrupt_handler.called)
def testRegisterResult(self):
result = unittest.TestResult()
self.assertNotIn(result, unittest.signals._results)
unittest.registerResult(result)
try:
self.assertIn(result, unittest.signals._results)
finally:
unittest.removeResult(result)
def testInterruptCaught(self):
default_handler = signal.getsignal(signal.SIGINT)
result = unittest.TestResult()
unittest.installHandler()
unittest.registerResult(result)
self.assertNotEqual(signal.getsignal(signal.SIGINT), default_handler)
def test(result):
pid = os.getpid()
os.kill(pid, signal.SIGINT)
result.breakCaught = True
self.assertTrue(result.shouldStop)
try:
test(result)
except KeyboardInterrupt:
self.fail("KeyboardInterrupt not handled")
self.assertTrue(result.breakCaught)
def testSecondInterrupt(self):
# Can't use skipIf decorator because the signal handler may have
# been changed after defining this method.
if signal.getsignal(signal.SIGINT) == signal.SIG_IGN:
self.skipTest("test requires SIGINT to not be ignored")
result = unittest.TestResult()
unittest.installHandler()
unittest.registerResult(result)
def test(result):
pid = os.getpid()
os.kill(pid, signal.SIGINT)
result.breakCaught = True
self.assertTrue(result.shouldStop)
os.kill(pid, signal.SIGINT)
self.fail("Second KeyboardInterrupt not raised")
try:
test(result)
except KeyboardInterrupt:
pass
else:
self.fail("Second KeyboardInterrupt not raised")
self.assertTrue(result.breakCaught)
def testTwoResults(self):
unittest.installHandler()
result = unittest.TestResult()
unittest.registerResult(result)
new_handler = signal.getsignal(signal.SIGINT)
result2 = unittest.TestResult()
unittest.registerResult(result2)
self.assertEqual(signal.getsignal(signal.SIGINT), new_handler)
result3 = unittest.TestResult()
def test(result):
pid = os.getpid()
os.kill(pid, signal.SIGINT)
try:
test(result)
except KeyboardInterrupt:
self.fail("KeyboardInterrupt not handled")
self.assertTrue(result.shouldStop)
self.assertTrue(result2.shouldStop)
self.assertFalse(result3.shouldStop)
def testHandlerReplacedButCalled(self):
# Can't use skipIf decorator because the signal handler may have
# been changed after defining this method.
if signal.getsignal(signal.SIGINT) == signal.SIG_IGN:
self.skipTest("test requires SIGINT to not be ignored")
# If our handler has been replaced (is no longer installed) but is
# called by the *new* handler, then it isn't safe to delay the
# SIGINT and we should immediately delegate to the default handler
unittest.installHandler()
handler = signal.getsignal(signal.SIGINT)
def new_handler(frame, signum):
handler(frame, signum)
signal.signal(signal.SIGINT, new_handler)
try:
pid = os.getpid()
os.kill(pid, signal.SIGINT)
except KeyboardInterrupt:
pass
else:
self.fail("replaced but delegated handler doesn't raise interrupt")
def testRunner(self):
# Creating a TextTestRunner with the appropriate argument should
# register the TextTestResult it creates
runner = unittest.TextTestRunner(stream=io.StringIO())
result = runner.run(unittest.TestSuite())
self.assertIn(result, unittest.signals._results)
def testWeakReferences(self):
# Calling registerResult on a result should not keep it alive
result = unittest.TestResult()
unittest.registerResult(result)
ref = weakref.ref(result)
del result
# For non-reference counting implementations
gc.collect();gc.collect()
self.assertIsNone(ref())
def testRemoveResult(self):
result = unittest.TestResult()
unittest.registerResult(result)
unittest.installHandler()
self.assertTrue(unittest.removeResult(result))
# Should this raise an error instead?
self.assertFalse(unittest.removeResult(unittest.TestResult()))
try:
pid = os.getpid()
os.kill(pid, signal.SIGINT)
except KeyboardInterrupt:
pass
self.assertFalse(result.shouldStop)
def testMainInstallsHandler(self):
failfast = object()
test = object()
verbosity = object()
result = object()
default_handler = signal.getsignal(signal.SIGINT)
class FakeRunner(object):
initArgs = []
runArgs = []
def __init__(self, *args, **kwargs):
self.initArgs.append((args, kwargs))
def run(self, test):
self.runArgs.append(test)
return result
class Program(unittest.TestProgram):
def __init__(self, catchbreak):
self.exit = False
self.verbosity = verbosity
self.failfast = failfast
self.catchbreak = catchbreak
self.tb_locals = False
self.testRunner = FakeRunner
self.test = test
self.result = None
p = Program(False)
p.runTests()
self.assertEqual(FakeRunner.initArgs, [((), {'buffer': None,
'verbosity': verbosity,
'failfast': failfast,
'tb_locals': False,
'warnings': None})])
self.assertEqual(FakeRunner.runArgs, [test])
self.assertEqual(p.result, result)
self.assertEqual(signal.getsignal(signal.SIGINT), default_handler)
FakeRunner.initArgs = []
FakeRunner.runArgs = []
p = Program(True)
p.runTests()
self.assertEqual(FakeRunner.initArgs, [((), {'buffer': None,
'verbosity': verbosity,
'failfast': failfast,
'tb_locals': False,
'warnings': None})])
self.assertEqual(FakeRunner.runArgs, [test])
self.assertEqual(p.result, result)
self.assertNotEqual(signal.getsignal(signal.SIGINT), default_handler)
def testRemoveHandler(self):
default_handler = signal.getsignal(signal.SIGINT)
unittest.installHandler()
unittest.removeHandler()
self.assertEqual(signal.getsignal(signal.SIGINT), default_handler)
# check that calling removeHandler multiple times has no ill-effect
unittest.removeHandler()
self.assertEqual(signal.getsignal(signal.SIGINT), default_handler)
def testRemoveHandlerAsDecorator(self):
default_handler = signal.getsignal(signal.SIGINT)
unittest.installHandler()
@unittest.removeHandler
def test():
self.assertEqual(signal.getsignal(signal.SIGINT), default_handler)
test()
self.assertNotEqual(signal.getsignal(signal.SIGINT), default_handler)
@unittest.skipUnless(hasattr(os, 'kill'), "Test requires os.kill")
@unittest.skipIf(sys.platform =="win32", "Test cannot run on Windows")
@unittest.skipIf(sys.platform == 'freebsd6', "Test kills regrtest on freebsd6 "
"if threads have been used")
class TestBreakDefaultIntHandler(TestBreak):
int_handler = signal.default_int_handler
@unittest.skipUnless(hasattr(os, 'kill'), "Test requires os.kill")
@unittest.skipIf(sys.platform =="win32", "Test cannot run on Windows")
@unittest.skipIf(sys.platform == 'freebsd6', "Test kills regrtest on freebsd6 "
"if threads have been used")
class TestBreakSignalIgnored(TestBreak):
int_handler = signal.SIG_IGN
@unittest.skipUnless(hasattr(os, 'kill'), "Test requires os.kill")
@unittest.skipIf(sys.platform =="win32", "Test cannot run on Windows")
@unittest.skipIf(sys.platform == 'freebsd6', "Test kills regrtest on freebsd6 "
"if threads have been used")
class TestBreakSignalDefault(TestBreak):
int_handler = signal.SIG_DFL
if __name__ == "__main__":
unittest.main()
| 9,945 | 289 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/dummy.py | # Empty module for testing the loading of modules
| 50 | 2 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/test_setups.py | import io
import sys
import unittest
def resultFactory(*_):
return unittest.TestResult()
class TestSetups(unittest.TestCase):
def getRunner(self):
return unittest.TextTestRunner(resultclass=resultFactory,
stream=io.StringIO())
def runTests(self, *cases):
suite = unittest.TestSuite()
for case in cases:
tests = unittest.defaultTestLoader.loadTestsFromTestCase(case)
suite.addTests(tests)
runner = self.getRunner()
# creating a nested suite exposes some potential bugs
realSuite = unittest.TestSuite()
realSuite.addTest(suite)
# adding empty suites to the end exposes potential bugs
suite.addTest(unittest.TestSuite())
realSuite.addTest(unittest.TestSuite())
return runner.run(realSuite)
def test_setup_class(self):
class Test(unittest.TestCase):
setUpCalled = 0
@classmethod
def setUpClass(cls):
Test.setUpCalled += 1
unittest.TestCase.setUpClass()
def test_one(self):
pass
def test_two(self):
pass
result = self.runTests(Test)
self.assertEqual(Test.setUpCalled, 1)
self.assertEqual(result.testsRun, 2)
self.assertEqual(len(result.errors), 0)
def test_teardown_class(self):
class Test(unittest.TestCase):
tearDownCalled = 0
@classmethod
def tearDownClass(cls):
Test.tearDownCalled += 1
unittest.TestCase.tearDownClass()
def test_one(self):
pass
def test_two(self):
pass
result = self.runTests(Test)
self.assertEqual(Test.tearDownCalled, 1)
self.assertEqual(result.testsRun, 2)
self.assertEqual(len(result.errors), 0)
def test_teardown_class_two_classes(self):
class Test(unittest.TestCase):
tearDownCalled = 0
@classmethod
def tearDownClass(cls):
Test.tearDownCalled += 1
unittest.TestCase.tearDownClass()
def test_one(self):
pass
def test_two(self):
pass
class Test2(unittest.TestCase):
tearDownCalled = 0
@classmethod
def tearDownClass(cls):
Test2.tearDownCalled += 1
unittest.TestCase.tearDownClass()
def test_one(self):
pass
def test_two(self):
pass
result = self.runTests(Test, Test2)
self.assertEqual(Test.tearDownCalled, 1)
self.assertEqual(Test2.tearDownCalled, 1)
self.assertEqual(result.testsRun, 4)
self.assertEqual(len(result.errors), 0)
def test_error_in_setupclass(self):
class BrokenTest(unittest.TestCase):
@classmethod
def setUpClass(cls):
raise TypeError('foo')
def test_one(self):
pass
def test_two(self):
pass
result = self.runTests(BrokenTest)
self.assertEqual(result.testsRun, 0)
self.assertEqual(len(result.errors), 1)
error, _ = result.errors[0]
self.assertEqual(str(error),
'setUpClass (%s.%s)' % (__name__, BrokenTest.__qualname__))
def test_error_in_teardown_class(self):
class Test(unittest.TestCase):
tornDown = 0
@classmethod
def tearDownClass(cls):
Test.tornDown += 1
raise TypeError('foo')
def test_one(self):
pass
def test_two(self):
pass
class Test2(unittest.TestCase):
tornDown = 0
@classmethod
def tearDownClass(cls):
Test2.tornDown += 1
raise TypeError('foo')
def test_one(self):
pass
def test_two(self):
pass
result = self.runTests(Test, Test2)
self.assertEqual(result.testsRun, 4)
self.assertEqual(len(result.errors), 2)
self.assertEqual(Test.tornDown, 1)
self.assertEqual(Test2.tornDown, 1)
error, _ = result.errors[0]
self.assertEqual(str(error),
'tearDownClass (%s.%s)' % (__name__, Test.__qualname__))
def test_class_not_torndown_when_setup_fails(self):
class Test(unittest.TestCase):
tornDown = False
@classmethod
def setUpClass(cls):
raise TypeError
@classmethod
def tearDownClass(cls):
Test.tornDown = True
raise TypeError('foo')
def test_one(self):
pass
self.runTests(Test)
self.assertFalse(Test.tornDown)
def test_class_not_setup_or_torndown_when_skipped(self):
class Test(unittest.TestCase):
classSetUp = False
tornDown = False
@classmethod
def setUpClass(cls):
Test.classSetUp = True
@classmethod
def tearDownClass(cls):
Test.tornDown = True
def test_one(self):
pass
Test = unittest.skip("hop")(Test)
self.runTests(Test)
self.assertFalse(Test.classSetUp)
self.assertFalse(Test.tornDown)
def test_setup_teardown_order_with_pathological_suite(self):
results = []
class Module1(object):
@staticmethod
def setUpModule():
results.append('Module1.setUpModule')
@staticmethod
def tearDownModule():
results.append('Module1.tearDownModule')
class Module2(object):
@staticmethod
def setUpModule():
results.append('Module2.setUpModule')
@staticmethod
def tearDownModule():
results.append('Module2.tearDownModule')
class Test1(unittest.TestCase):
@classmethod
def setUpClass(cls):
results.append('setup 1')
@classmethod
def tearDownClass(cls):
results.append('teardown 1')
def testOne(self):
results.append('Test1.testOne')
def testTwo(self):
results.append('Test1.testTwo')
class Test2(unittest.TestCase):
@classmethod
def setUpClass(cls):
results.append('setup 2')
@classmethod
def tearDownClass(cls):
results.append('teardown 2')
def testOne(self):
results.append('Test2.testOne')
def testTwo(self):
results.append('Test2.testTwo')
class Test3(unittest.TestCase):
@classmethod
def setUpClass(cls):
results.append('setup 3')
@classmethod
def tearDownClass(cls):
results.append('teardown 3')
def testOne(self):
results.append('Test3.testOne')
def testTwo(self):
results.append('Test3.testTwo')
Test1.__module__ = Test2.__module__ = 'Module'
Test3.__module__ = 'Module2'
sys.modules['Module'] = Module1
sys.modules['Module2'] = Module2
first = unittest.TestSuite((Test1('testOne'),))
second = unittest.TestSuite((Test1('testTwo'),))
third = unittest.TestSuite((Test2('testOne'),))
fourth = unittest.TestSuite((Test2('testTwo'),))
fifth = unittest.TestSuite((Test3('testOne'),))
sixth = unittest.TestSuite((Test3('testTwo'),))
suite = unittest.TestSuite((first, second, third, fourth, fifth, sixth))
runner = self.getRunner()
result = runner.run(suite)
self.assertEqual(result.testsRun, 6)
self.assertEqual(len(result.errors), 0)
self.assertEqual(results,
['Module1.setUpModule', 'setup 1',
'Test1.testOne', 'Test1.testTwo', 'teardown 1',
'setup 2', 'Test2.testOne', 'Test2.testTwo',
'teardown 2', 'Module1.tearDownModule',
'Module2.setUpModule', 'setup 3',
'Test3.testOne', 'Test3.testTwo',
'teardown 3', 'Module2.tearDownModule'])
def test_setup_module(self):
class Module(object):
moduleSetup = 0
@staticmethod
def setUpModule():
Module.moduleSetup += 1
class Test(unittest.TestCase):
def test_one(self):
pass
def test_two(self):
pass
Test.__module__ = 'Module'
sys.modules['Module'] = Module
result = self.runTests(Test)
self.assertEqual(Module.moduleSetup, 1)
self.assertEqual(result.testsRun, 2)
self.assertEqual(len(result.errors), 0)
def test_error_in_setup_module(self):
class Module(object):
moduleSetup = 0
moduleTornDown = 0
@staticmethod
def setUpModule():
Module.moduleSetup += 1
raise TypeError('foo')
@staticmethod
def tearDownModule():
Module.moduleTornDown += 1
class Test(unittest.TestCase):
classSetUp = False
classTornDown = False
@classmethod
def setUpClass(cls):
Test.classSetUp = True
@classmethod
def tearDownClass(cls):
Test.classTornDown = True
def test_one(self):
pass
def test_two(self):
pass
class Test2(unittest.TestCase):
def test_one(self):
pass
def test_two(self):
pass
Test.__module__ = 'Module'
Test2.__module__ = 'Module'
sys.modules['Module'] = Module
result = self.runTests(Test, Test2)
self.assertEqual(Module.moduleSetup, 1)
self.assertEqual(Module.moduleTornDown, 0)
self.assertEqual(result.testsRun, 0)
self.assertFalse(Test.classSetUp)
self.assertFalse(Test.classTornDown)
self.assertEqual(len(result.errors), 1)
error, _ = result.errors[0]
self.assertEqual(str(error), 'setUpModule (Module)')
def test_testcase_with_missing_module(self):
class Test(unittest.TestCase):
def test_one(self):
pass
def test_two(self):
pass
Test.__module__ = 'Module'
sys.modules.pop('Module', None)
result = self.runTests(Test)
self.assertEqual(result.testsRun, 2)
def test_teardown_module(self):
class Module(object):
moduleTornDown = 0
@staticmethod
def tearDownModule():
Module.moduleTornDown += 1
class Test(unittest.TestCase):
def test_one(self):
pass
def test_two(self):
pass
Test.__module__ = 'Module'
sys.modules['Module'] = Module
result = self.runTests(Test)
self.assertEqual(Module.moduleTornDown, 1)
self.assertEqual(result.testsRun, 2)
self.assertEqual(len(result.errors), 0)
def test_error_in_teardown_module(self):
class Module(object):
moduleTornDown = 0
@staticmethod
def tearDownModule():
Module.moduleTornDown += 1
raise TypeError('foo')
class Test(unittest.TestCase):
classSetUp = False
classTornDown = False
@classmethod
def setUpClass(cls):
Test.classSetUp = True
@classmethod
def tearDownClass(cls):
Test.classTornDown = True
def test_one(self):
pass
def test_two(self):
pass
class Test2(unittest.TestCase):
def test_one(self):
pass
def test_two(self):
pass
Test.__module__ = 'Module'
Test2.__module__ = 'Module'
sys.modules['Module'] = Module
result = self.runTests(Test, Test2)
self.assertEqual(Module.moduleTornDown, 1)
self.assertEqual(result.testsRun, 4)
self.assertTrue(Test.classSetUp)
self.assertTrue(Test.classTornDown)
self.assertEqual(len(result.errors), 1)
error, _ = result.errors[0]
self.assertEqual(str(error), 'tearDownModule (Module)')
def test_skiptest_in_setupclass(self):
class Test(unittest.TestCase):
@classmethod
def setUpClass(cls):
raise unittest.SkipTest('foo')
def test_one(self):
pass
def test_two(self):
pass
result = self.runTests(Test)
self.assertEqual(result.testsRun, 0)
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.skipped), 1)
skipped = result.skipped[0][0]
self.assertEqual(str(skipped),
'setUpClass (%s.%s)' % (__name__, Test.__qualname__))
def test_skiptest_in_setupmodule(self):
class Test(unittest.TestCase):
def test_one(self):
pass
def test_two(self):
pass
class Module(object):
@staticmethod
def setUpModule():
raise unittest.SkipTest('foo')
Test.__module__ = 'Module'
sys.modules['Module'] = Module
result = self.runTests(Test)
self.assertEqual(result.testsRun, 0)
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.skipped), 1)
skipped = result.skipped[0][0]
self.assertEqual(str(skipped), 'setUpModule (Module)')
def test_suite_debug_executes_setups_and_teardowns(self):
ordering = []
class Module(object):
@staticmethod
def setUpModule():
ordering.append('setUpModule')
@staticmethod
def tearDownModule():
ordering.append('tearDownModule')
class Test(unittest.TestCase):
@classmethod
def setUpClass(cls):
ordering.append('setUpClass')
@classmethod
def tearDownClass(cls):
ordering.append('tearDownClass')
def test_something(self):
ordering.append('test_something')
Test.__module__ = 'Module'
sys.modules['Module'] = Module
suite = unittest.defaultTestLoader.loadTestsFromTestCase(Test)
suite.debug()
expectedOrder = ['setUpModule', 'setUpClass', 'test_something', 'tearDownClass', 'tearDownModule']
self.assertEqual(ordering, expectedOrder)
def test_suite_debug_propagates_exceptions(self):
class Module(object):
@staticmethod
def setUpModule():
if phase == 0:
raise Exception('setUpModule')
@staticmethod
def tearDownModule():
if phase == 1:
raise Exception('tearDownModule')
class Test(unittest.TestCase):
@classmethod
def setUpClass(cls):
if phase == 2:
raise Exception('setUpClass')
@classmethod
def tearDownClass(cls):
if phase == 3:
raise Exception('tearDownClass')
def test_something(self):
if phase == 4:
raise Exception('test_something')
Test.__module__ = 'Module'
sys.modules['Module'] = Module
messages = ('setUpModule', 'tearDownModule', 'setUpClass', 'tearDownClass', 'test_something')
for phase, msg in enumerate(messages):
_suite = unittest.defaultTestLoader.loadTestsFromTestCase(Test)
suite = unittest.TestSuite([_suite])
with self.assertRaisesRegex(Exception, msg):
suite.debug()
if __name__ == '__main__':
unittest.main()
| 16,503 | 508 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/test_loader.py | import sys
import types
import warnings
import unittest
# Decorator used in the deprecation tests to reset the warning registry for
# test isolation and reproducibility.
def warningregistry(func):
def wrapper(*args, **kws):
missing = []
saved = getattr(warnings, '__warningregistry__', missing).copy()
try:
return func(*args, **kws)
finally:
if saved is missing:
try:
del warnings.__warningregistry__
except AttributeError:
pass
else:
warnings.__warningregistry__ = saved
return wrapper
class Test_TestLoader(unittest.TestCase):
### Basic object tests
################################################################
def test___init__(self):
loader = unittest.TestLoader()
self.assertEqual([], loader.errors)
### Tests for TestLoader.loadTestsFromTestCase
################################################################
# "Return a suite of all test cases contained in the TestCase-derived
# class testCaseClass"
def test_loadTestsFromTestCase(self):
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
tests = unittest.TestSuite([Foo('test_1'), Foo('test_2')])
loader = unittest.TestLoader()
self.assertEqual(loader.loadTestsFromTestCase(Foo), tests)
# "Return a suite of all test cases contained in the TestCase-derived
# class testCaseClass"
#
# Make sure it does the right thing even if no tests were found
def test_loadTestsFromTestCase__no_matches(self):
class Foo(unittest.TestCase):
def foo_bar(self): pass
empty_suite = unittest.TestSuite()
loader = unittest.TestLoader()
self.assertEqual(loader.loadTestsFromTestCase(Foo), empty_suite)
# "Return a suite of all test cases contained in the TestCase-derived
# class testCaseClass"
#
# What happens if loadTestsFromTestCase() is given an object
# that isn't a subclass of TestCase? Specifically, what happens
# if testCaseClass is a subclass of TestSuite?
#
# This is checked for specifically in the code, so we better add a
# test for it.
def test_loadTestsFromTestCase__TestSuite_subclass(self):
class NotATestCase(unittest.TestSuite):
pass
loader = unittest.TestLoader()
try:
loader.loadTestsFromTestCase(NotATestCase)
except TypeError:
pass
else:
self.fail('Should raise TypeError')
# "Return a suite of all test cases contained in the TestCase-derived
# class testCaseClass"
#
# Make sure loadTestsFromTestCase() picks up the default test method
# name (as specified by TestCase), even though the method name does
# not match the default TestLoader.testMethodPrefix string
def test_loadTestsFromTestCase__default_method_name(self):
class Foo(unittest.TestCase):
def runTest(self):
pass
loader = unittest.TestLoader()
# This has to be false for the test to succeed
self.assertFalse('runTest'.startswith(loader.testMethodPrefix))
suite = loader.loadTestsFromTestCase(Foo)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [Foo('runTest')])
################################################################
### /Tests for TestLoader.loadTestsFromTestCase
### Tests for TestLoader.loadTestsFromModule
################################################################
# "This method searches `module` for classes derived from TestCase"
def test_loadTestsFromModule__TestCase_subclass(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromModule(m)
self.assertIsInstance(suite, loader.suiteClass)
expected = [loader.suiteClass([MyTestCase('test')])]
self.assertEqual(list(suite), expected)
# "This method searches `module` for classes derived from TestCase"
#
# What happens if no tests are found (no TestCase instances)?
def test_loadTestsFromModule__no_TestCase_instances(self):
m = types.ModuleType('m')
loader = unittest.TestLoader()
suite = loader.loadTestsFromModule(m)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [])
# "This method searches `module` for classes derived from TestCase"
#
# What happens if no tests are found (TestCases instances, but no tests)?
def test_loadTestsFromModule__no_TestCase_tests(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromModule(m)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [loader.suiteClass()])
# "This method searches `module` for classes derived from TestCase"s
#
# What happens if loadTestsFromModule() is given something other
# than a module?
#
# XXX Currently, it succeeds anyway. This flexibility
# should either be documented or loadTestsFromModule() should
# raise a TypeError
#
# XXX Certain people are using this behaviour. We'll add a test for it
def test_loadTestsFromModule__not_a_module(self):
class MyTestCase(unittest.TestCase):
def test(self):
pass
class NotAModule(object):
test_2 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromModule(NotAModule)
reference = [unittest.TestSuite([MyTestCase('test')])]
self.assertEqual(list(suite), reference)
# Check that loadTestsFromModule honors (or not) a module
# with a load_tests function.
@warningregistry
def test_loadTestsFromModule__load_tests(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
load_tests_args = []
def load_tests(loader, tests, pattern):
self.assertIsInstance(tests, unittest.TestSuite)
load_tests_args.extend((loader, tests, pattern))
return tests
m.load_tests = load_tests
loader = unittest.TestLoader()
suite = loader.loadTestsFromModule(m)
self.assertIsInstance(suite, unittest.TestSuite)
self.assertEqual(load_tests_args, [loader, suite, None])
# With Python 3.5, the undocumented and unofficial use_load_tests is
# ignored (and deprecated).
load_tests_args = []
with warnings.catch_warnings(record=False):
warnings.simplefilter('ignore')
suite = loader.loadTestsFromModule(m, use_load_tests=False)
self.assertEqual(load_tests_args, [loader, suite, None])
@warningregistry
def test_loadTestsFromModule__use_load_tests_deprecated_positional(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
load_tests_args = []
def load_tests(loader, tests, pattern):
self.assertIsInstance(tests, unittest.TestSuite)
load_tests_args.extend((loader, tests, pattern))
return tests
m.load_tests = load_tests
# The method still works.
loader = unittest.TestLoader()
# use_load_tests=True as a positional argument.
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always')
suite = loader.loadTestsFromModule(m, False)
self.assertIsInstance(suite, unittest.TestSuite)
# load_tests was still called because use_load_tests is deprecated
# and ignored.
self.assertEqual(load_tests_args, [loader, suite, None])
# We got a warning.
self.assertIs(w[-1].category, DeprecationWarning)
self.assertEqual(str(w[-1].message),
'use_load_tests is deprecated and ignored')
@warningregistry
def test_loadTestsFromModule__use_load_tests_deprecated_keyword(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
load_tests_args = []
def load_tests(loader, tests, pattern):
self.assertIsInstance(tests, unittest.TestSuite)
load_tests_args.extend((loader, tests, pattern))
return tests
m.load_tests = load_tests
# The method still works.
loader = unittest.TestLoader()
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always')
suite = loader.loadTestsFromModule(m, use_load_tests=False)
self.assertIsInstance(suite, unittest.TestSuite)
# load_tests was still called because use_load_tests is deprecated
# and ignored.
self.assertEqual(load_tests_args, [loader, suite, None])
# We got a warning.
self.assertIs(w[-1].category, DeprecationWarning)
self.assertEqual(str(w[-1].message),
'use_load_tests is deprecated and ignored')
@warningregistry
def test_loadTestsFromModule__too_many_positional_args(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
load_tests_args = []
def load_tests(loader, tests, pattern):
self.assertIsInstance(tests, unittest.TestSuite)
load_tests_args.extend((loader, tests, pattern))
return tests
m.load_tests = load_tests
loader = unittest.TestLoader()
with self.assertRaises(TypeError) as cm, \
warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always')
loader.loadTestsFromModule(m, False, 'testme.*')
# We still got the deprecation warning.
self.assertIs(w[-1].category, DeprecationWarning)
self.assertEqual(str(w[-1].message),
'use_load_tests is deprecated and ignored')
# We also got a TypeError for too many positional arguments.
self.assertEqual(type(cm.exception), TypeError)
self.assertEqual(
str(cm.exception),
'loadTestsFromModule() takes 1 positional argument but 3 were given')
@warningregistry
def test_loadTestsFromModule__use_load_tests_other_bad_keyword(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
load_tests_args = []
def load_tests(loader, tests, pattern):
self.assertIsInstance(tests, unittest.TestSuite)
load_tests_args.extend((loader, tests, pattern))
return tests
m.load_tests = load_tests
loader = unittest.TestLoader()
with warnings.catch_warnings():
warnings.simplefilter('ignore')
with self.assertRaises(TypeError) as cm:
loader.loadTestsFromModule(
m, use_load_tests=False, very_bad=True, worse=False)
self.assertEqual(type(cm.exception), TypeError)
# The error message names the first bad argument alphabetically,
# however use_load_tests (which sorts first) is ignored.
self.assertEqual(
str(cm.exception),
"loadTestsFromModule() got an unexpected keyword argument 'very_bad'")
def test_loadTestsFromModule__pattern(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
load_tests_args = []
def load_tests(loader, tests, pattern):
self.assertIsInstance(tests, unittest.TestSuite)
load_tests_args.extend((loader, tests, pattern))
return tests
m.load_tests = load_tests
loader = unittest.TestLoader()
suite = loader.loadTestsFromModule(m, pattern='testme.*')
self.assertIsInstance(suite, unittest.TestSuite)
self.assertEqual(load_tests_args, [loader, suite, 'testme.*'])
def test_loadTestsFromModule__faulty_load_tests(self):
m = types.ModuleType('m')
def load_tests(loader, tests, pattern):
raise TypeError('some failure')
m.load_tests = load_tests
loader = unittest.TestLoader()
suite = loader.loadTestsFromModule(m)
self.assertIsInstance(suite, unittest.TestSuite)
self.assertEqual(suite.countTestCases(), 1)
# Errors loading the suite are also captured for introspection.
self.assertNotEqual([], loader.errors)
self.assertEqual(1, len(loader.errors))
error = loader.errors[0]
self.assertTrue(
'Failed to call load_tests:' in error,
'missing error string in %r' % error)
test = list(suite)[0]
self.assertRaisesRegex(TypeError, "some failure", test.m)
################################################################
### /Tests for TestLoader.loadTestsFromModule()
### Tests for TestLoader.loadTestsFromName()
################################################################
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# Is ValueError raised in response to an empty name?
def test_loadTestsFromName__empty_name(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromName('')
except ValueError as e:
self.assertEqual(str(e), "Empty module name")
else:
self.fail("TestLoader.loadTestsFromName failed to raise ValueError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when the name contains invalid characters?
def test_loadTestsFromName__malformed_name(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('abc () //')
error, test = self.check_deferred_error(loader, suite)
expected = "Failed to import test module: abc () //"
expected_regex = r"Failed to import test module: abc \(\) //"
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(
ImportError, expected_regex, getattr(test, 'abc () //'))
# "The specifier name is a ``dotted name'' that may resolve ... to a
# module"
#
# What happens when a module by that name can't be found?
def test_loadTestsFromName__unknown_module_name(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('sdasfasfasdf')
expected = "No module named 'sdasfasfasdf'"
error, test = self.check_deferred_error(loader, suite)
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(ImportError, expected, test.sdasfasfasdf)
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when the module is found, but the attribute isn't?
def test_loadTestsFromName__unknown_attr_name_on_module(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('unittest.loader.sdasfasfasdf')
expected = "module 'unittest.loader' has no attribute 'sdasfasfasdf'"
error, test = self.check_deferred_error(loader, suite)
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(AttributeError, expected, test.sdasfasfasdf)
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when the module is found, but the attribute isn't?
def test_loadTestsFromName__unknown_attr_name_on_package(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('unittest.sdasfasfasdf')
expected = "No module named 'unittest.sdasfasfasdf'"
error, test = self.check_deferred_error(loader, suite)
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(ImportError, expected, test.sdasfasfasdf)
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when we provide the module, but the attribute can't be
# found?
def test_loadTestsFromName__relative_unknown_name(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('sdasfasfasdf', unittest)
expected = "module 'unittest' has no attribute 'sdasfasfasdf'"
error, test = self.check_deferred_error(loader, suite)
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(AttributeError, expected, test.sdasfasfasdf)
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
# ...
# "The method optionally resolves name relative to the given module"
#
# Does loadTestsFromName raise ValueError when passed an empty
# name relative to a provided module?
#
# XXX Should probably raise a ValueError instead of an AttributeError
def test_loadTestsFromName__relative_empty_name(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('', unittest)
error, test = self.check_deferred_error(loader, suite)
expected = "has no attribute ''"
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(AttributeError, expected, getattr(test, ''))
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
# ...
# "The method optionally resolves name relative to the given module"
#
# What happens when an impossible name is given, relative to the provided
# `module`?
def test_loadTestsFromName__relative_malformed_name(self):
loader = unittest.TestLoader()
# XXX Should this raise AttributeError or ValueError?
suite = loader.loadTestsFromName('abc () //', unittest)
error, test = self.check_deferred_error(loader, suite)
expected = "module 'unittest' has no attribute 'abc () //'"
expected_regex = r"module 'unittest' has no attribute 'abc \(\) //'"
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(
AttributeError, expected_regex, getattr(test, 'abc () //'))
# "The method optionally resolves name relative to the given module"
#
# Does loadTestsFromName raise TypeError when the `module` argument
# isn't a module object?
#
# XXX Accepts the not-a-module object, ignoring the object's type
# This should raise an exception or the method name should be changed
#
# XXX Some people are relying on this, so keep it for now
def test_loadTestsFromName__relative_not_a_module(self):
class MyTestCase(unittest.TestCase):
def test(self):
pass
class NotAModule(object):
test_2 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('test_2', NotAModule)
reference = [MyTestCase('test')]
self.assertEqual(list(suite), reference)
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# Does it raise an exception if the name resolves to an invalid
# object?
def test_loadTestsFromName__relative_bad_object(self):
m = types.ModuleType('m')
m.testcase_1 = object()
loader = unittest.TestLoader()
try:
loader.loadTestsFromName('testcase_1', m)
except TypeError:
pass
else:
self.fail("Should have raised TypeError")
# "The specifier name is a ``dotted name'' that may
# resolve either to ... a test case class"
def test_loadTestsFromName__relative_TestCase_subclass(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('testcase_1', m)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [MyTestCase('test')])
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
def test_loadTestsFromName__relative_TestSuite(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testsuite = unittest.TestSuite([MyTestCase('test')])
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('testsuite', m)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [MyTestCase('test')])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a test method within a test case class"
def test_loadTestsFromName__relative_testmethod(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('testcase_1.test', m)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [MyTestCase('test')])
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# Does loadTestsFromName() raise the proper exception when trying to
# resolve "a test method within a test case class" that doesn't exist
# for the given name (relative to a provided module)?
def test_loadTestsFromName__relative_invalid_testmethod(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('testcase_1.testfoo', m)
expected = "type object 'MyTestCase' has no attribute 'testfoo'"
error, test = self.check_deferred_error(loader, suite)
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(AttributeError, expected, test.testfoo)
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a ... TestSuite instance"
def test_loadTestsFromName__callable__TestSuite(self):
m = types.ModuleType('m')
testcase_1 = unittest.FunctionTestCase(lambda: None)
testcase_2 = unittest.FunctionTestCase(lambda: None)
def return_TestSuite():
return unittest.TestSuite([testcase_1, testcase_2])
m.return_TestSuite = return_TestSuite
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('return_TestSuite', m)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [testcase_1, testcase_2])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a TestCase ... instance"
def test_loadTestsFromName__callable__TestCase_instance(self):
m = types.ModuleType('m')
testcase_1 = unittest.FunctionTestCase(lambda: None)
def return_TestCase():
return testcase_1
m.return_TestCase = return_TestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('return_TestCase', m)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [testcase_1])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a TestCase ... instance"
#*****************************************************************
#Override the suiteClass attribute to ensure that the suiteClass
#attribute is used
def test_loadTestsFromName__callable__TestCase_instance_ProperSuiteClass(self):
class SubTestSuite(unittest.TestSuite):
pass
m = types.ModuleType('m')
testcase_1 = unittest.FunctionTestCase(lambda: None)
def return_TestCase():
return testcase_1
m.return_TestCase = return_TestCase
loader = unittest.TestLoader()
loader.suiteClass = SubTestSuite
suite = loader.loadTestsFromName('return_TestCase', m)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [testcase_1])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a test method within a test case class"
#*****************************************************************
#Override the suiteClass attribute to ensure that the suiteClass
#attribute is used
def test_loadTestsFromName__relative_testmethod_ProperSuiteClass(self):
class SubTestSuite(unittest.TestSuite):
pass
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
loader.suiteClass=SubTestSuite
suite = loader.loadTestsFromName('testcase_1.test', m)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [MyTestCase('test')])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a TestCase or TestSuite instance"
#
# What happens if the callable returns something else?
def test_loadTestsFromName__callable__wrong_type(self):
m = types.ModuleType('m')
def return_wrong():
return 6
m.return_wrong = return_wrong
loader = unittest.TestLoader()
try:
suite = loader.loadTestsFromName('return_wrong', m)
except TypeError:
pass
else:
self.fail("TestLoader.loadTestsFromName failed to raise TypeError")
# "The specifier can refer to modules and packages which have not been
# imported; they will be imported as a side-effect"
def test_loadTestsFromName__module_not_loaded(self):
# We're going to try to load this module as a side-effect, so it
# better not be loaded before we try.
#
module_name = 'unittest.test.dummy'
sys.modules.pop(module_name, None)
loader = unittest.TestLoader()
try:
suite = loader.loadTestsFromName(module_name)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [])
# module should now be loaded, thanks to loadTestsFromName()
self.assertIn(module_name, sys.modules)
finally:
if module_name in sys.modules:
del sys.modules[module_name]
################################################################
### Tests for TestLoader.loadTestsFromName()
### Tests for TestLoader.loadTestsFromNames()
################################################################
def check_deferred_error(self, loader, suite):
"""Helper function for checking that errors in loading are reported.
:param loader: A loader with some errors.
:param suite: A suite that should have a late bound error.
:return: The first error message from the loader and the test object
from the suite.
"""
self.assertIsInstance(suite, unittest.TestSuite)
self.assertEqual(suite.countTestCases(), 1)
# Errors loading the suite are also captured for introspection.
self.assertNotEqual([], loader.errors)
self.assertEqual(1, len(loader.errors))
error = loader.errors[0]
test = list(suite)[0]
return error, test
# "Similar to loadTestsFromName(), but takes a sequence of names rather
# than a single name."
#
# What happens if that sequence of names is empty?
def test_loadTestsFromNames__empty_name_list(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames([])
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [])
# "Similar to loadTestsFromName(), but takes a sequence of names rather
# than a single name."
# ...
# "The method optionally resolves name relative to the given module"
#
# What happens if that sequence of names is empty?
#
# XXX Should this raise a ValueError or just return an empty TestSuite?
def test_loadTestsFromNames__relative_empty_name_list(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames([], unittest)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [])
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# Is ValueError raised in response to an empty name?
def test_loadTestsFromNames__empty_name(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromNames([''])
except ValueError as e:
self.assertEqual(str(e), "Empty module name")
else:
self.fail("TestLoader.loadTestsFromNames failed to raise ValueError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when presented with an impossible module name?
def test_loadTestsFromNames__malformed_name(self):
loader = unittest.TestLoader()
# XXX Should this raise ValueError or ImportError?
suite = loader.loadTestsFromNames(['abc () //'])
error, test = self.check_deferred_error(loader, list(suite)[0])
expected = "Failed to import test module: abc () //"
expected_regex = r"Failed to import test module: abc \(\) //"
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(
ImportError, expected_regex, getattr(test, 'abc () //'))
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when no module can be found for the given name?
def test_loadTestsFromNames__unknown_module_name(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['sdasfasfasdf'])
error, test = self.check_deferred_error(loader, list(suite)[0])
expected = "Failed to import test module: sdasfasfasdf"
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(ImportError, expected, test.sdasfasfasdf)
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when the module can be found, but not the attribute?
def test_loadTestsFromNames__unknown_attr_name(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(
['unittest.loader.sdasfasfasdf', 'unittest.test.dummy'])
error, test = self.check_deferred_error(loader, list(suite)[0])
expected = "module 'unittest.loader' has no attribute 'sdasfasfasdf'"
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(AttributeError, expected, test.sdasfasfasdf)
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
# ...
# "The method optionally resolves name relative to the given module"
#
# What happens when given an unknown attribute on a specified `module`
# argument?
def test_loadTestsFromNames__unknown_name_relative_1(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['sdasfasfasdf'], unittest)
error, test = self.check_deferred_error(loader, list(suite)[0])
expected = "module 'unittest' has no attribute 'sdasfasfasdf'"
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(AttributeError, expected, test.sdasfasfasdf)
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
# ...
# "The method optionally resolves name relative to the given module"
#
# Do unknown attributes (relative to a provided module) still raise an
# exception even in the presence of valid attribute names?
def test_loadTestsFromNames__unknown_name_relative_2(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['TestCase', 'sdasfasfasdf'], unittest)
error, test = self.check_deferred_error(loader, list(suite)[1])
expected = "module 'unittest' has no attribute 'sdasfasfasdf'"
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(AttributeError, expected, test.sdasfasfasdf)
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
# ...
# "The method optionally resolves name relative to the given module"
#
# What happens when faced with the empty string?
#
# XXX This currently raises AttributeError, though ValueError is probably
# more appropriate
def test_loadTestsFromNames__relative_empty_name(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames([''], unittest)
error, test = self.check_deferred_error(loader, list(suite)[0])
expected = "has no attribute ''"
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(AttributeError, expected, getattr(test, ''))
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
# ...
# "The method optionally resolves name relative to the given module"
#
# What happens when presented with an impossible attribute name?
def test_loadTestsFromNames__relative_malformed_name(self):
loader = unittest.TestLoader()
# XXX Should this raise AttributeError or ValueError?
suite = loader.loadTestsFromNames(['abc () //'], unittest)
error, test = self.check_deferred_error(loader, list(suite)[0])
expected = "module 'unittest' has no attribute 'abc () //'"
expected_regex = r"module 'unittest' has no attribute 'abc \(\) //'"
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(
AttributeError, expected_regex, getattr(test, 'abc () //'))
# "The method optionally resolves name relative to the given module"
#
# Does loadTestsFromNames() make sure the provided `module` is in fact
# a module?
#
# XXX This validation is currently not done. This flexibility should
# either be documented or a TypeError should be raised.
def test_loadTestsFromNames__relative_not_a_module(self):
class MyTestCase(unittest.TestCase):
def test(self):
pass
class NotAModule(object):
test_2 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['test_2'], NotAModule)
reference = [unittest.TestSuite([MyTestCase('test')])]
self.assertEqual(list(suite), reference)
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# Does it raise an exception if the name resolves to an invalid
# object?
def test_loadTestsFromNames__relative_bad_object(self):
m = types.ModuleType('m')
m.testcase_1 = object()
loader = unittest.TestLoader()
try:
loader.loadTestsFromNames(['testcase_1'], m)
except TypeError:
pass
else:
self.fail("Should have raised TypeError")
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a test case class"
def test_loadTestsFromNames__relative_TestCase_subclass(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['testcase_1'], m)
self.assertIsInstance(suite, loader.suiteClass)
expected = loader.suiteClass([MyTestCase('test')])
self.assertEqual(list(suite), [expected])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a TestSuite instance"
def test_loadTestsFromNames__relative_TestSuite(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testsuite = unittest.TestSuite([MyTestCase('test')])
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['testsuite'], m)
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [m.testsuite])
# "The specifier name is a ``dotted name'' that may resolve ... to ... a
# test method within a test case class"
def test_loadTestsFromNames__relative_testmethod(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['testcase_1.test'], m)
self.assertIsInstance(suite, loader.suiteClass)
ref_suite = unittest.TestSuite([MyTestCase('test')])
self.assertEqual(list(suite), [ref_suite])
# #14971: Make sure the dotted name resolution works even if the actual
# function doesn't have the same name as is used to find it.
def test_loadTestsFromName__function_with_different_name_than_method(self):
# lambdas have the name '<lambda>'.
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
test = lambda: 1
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['testcase_1.test'], m)
self.assertIsInstance(suite, loader.suiteClass)
ref_suite = unittest.TestSuite([MyTestCase('test')])
self.assertEqual(list(suite), [ref_suite])
# "The specifier name is a ``dotted name'' that may resolve ... to ... a
# test method within a test case class"
#
# Does the method gracefully handle names that initially look like they
# resolve to "a test method within a test case class" but don't?
def test_loadTestsFromNames__relative_invalid_testmethod(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['testcase_1.testfoo'], m)
error, test = self.check_deferred_error(loader, list(suite)[0])
expected = "type object 'MyTestCase' has no attribute 'testfoo'"
self.assertIn(
expected, error,
'missing error string in %r' % error)
self.assertRaisesRegex(AttributeError, expected, test.testfoo)
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a ... TestSuite instance"
def test_loadTestsFromNames__callable__TestSuite(self):
m = types.ModuleType('m')
testcase_1 = unittest.FunctionTestCase(lambda: None)
testcase_2 = unittest.FunctionTestCase(lambda: None)
def return_TestSuite():
return unittest.TestSuite([testcase_1, testcase_2])
m.return_TestSuite = return_TestSuite
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['return_TestSuite'], m)
self.assertIsInstance(suite, loader.suiteClass)
expected = unittest.TestSuite([testcase_1, testcase_2])
self.assertEqual(list(suite), [expected])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a TestCase ... instance"
def test_loadTestsFromNames__callable__TestCase_instance(self):
m = types.ModuleType('m')
testcase_1 = unittest.FunctionTestCase(lambda: None)
def return_TestCase():
return testcase_1
m.return_TestCase = return_TestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['return_TestCase'], m)
self.assertIsInstance(suite, loader.suiteClass)
ref_suite = unittest.TestSuite([testcase_1])
self.assertEqual(list(suite), [ref_suite])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a TestCase or TestSuite instance"
#
# Are staticmethods handled correctly?
def test_loadTestsFromNames__callable__call_staticmethod(self):
m = types.ModuleType('m')
class Test1(unittest.TestCase):
def test(self):
pass
testcase_1 = Test1('test')
class Foo(unittest.TestCase):
@staticmethod
def foo():
return testcase_1
m.Foo = Foo
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['Foo.foo'], m)
self.assertIsInstance(suite, loader.suiteClass)
ref_suite = unittest.TestSuite([testcase_1])
self.assertEqual(list(suite), [ref_suite])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a TestCase or TestSuite instance"
#
# What happens when the callable returns something else?
def test_loadTestsFromNames__callable__wrong_type(self):
m = types.ModuleType('m')
def return_wrong():
return 6
m.return_wrong = return_wrong
loader = unittest.TestLoader()
try:
suite = loader.loadTestsFromNames(['return_wrong'], m)
except TypeError:
pass
else:
self.fail("TestLoader.loadTestsFromNames failed to raise TypeError")
# "The specifier can refer to modules and packages which have not been
# imported; they will be imported as a side-effect"
def test_loadTestsFromNames__module_not_loaded(self):
# We're going to try to load this module as a side-effect, so it
# better not be loaded before we try.
#
module_name = 'unittest.test.dummy'
sys.modules.pop(module_name, None)
loader = unittest.TestLoader()
try:
suite = loader.loadTestsFromNames([module_name])
self.assertIsInstance(suite, loader.suiteClass)
self.assertEqual(list(suite), [unittest.TestSuite()])
# module should now be loaded, thanks to loadTestsFromName()
self.assertIn(module_name, sys.modules)
finally:
if module_name in sys.modules:
del sys.modules[module_name]
################################################################
### /Tests for TestLoader.loadTestsFromNames()
### Tests for TestLoader.getTestCaseNames()
################################################################
# "Return a sorted sequence of method names found within testCaseClass"
#
# Test.foobar is defined to make sure getTestCaseNames() respects
# loader.testMethodPrefix
def test_getTestCaseNames(self):
class Test(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foobar(self): pass
loader = unittest.TestLoader()
self.assertEqual(loader.getTestCaseNames(Test), ['test_1', 'test_2'])
# "Return a sorted sequence of method names found within testCaseClass"
#
# Does getTestCaseNames() behave appropriately if no tests are found?
def test_getTestCaseNames__no_tests(self):
class Test(unittest.TestCase):
def foobar(self): pass
loader = unittest.TestLoader()
self.assertEqual(loader.getTestCaseNames(Test), [])
# "Return a sorted sequence of method names found within testCaseClass"
#
# Are not-TestCases handled gracefully?
#
# XXX This should raise a TypeError, not return a list
#
# XXX It's too late in the 2.5 release cycle to fix this, but it should
# probably be revisited for 2.6
def test_getTestCaseNames__not_a_TestCase(self):
class BadCase(int):
def test_foo(self):
pass
loader = unittest.TestLoader()
names = loader.getTestCaseNames(BadCase)
self.assertEqual(names, ['test_foo'])
# "Return a sorted sequence of method names found within testCaseClass"
#
# Make sure inherited names are handled.
#
# TestP.foobar is defined to make sure getTestCaseNames() respects
# loader.testMethodPrefix
def test_getTestCaseNames__inheritance(self):
class TestP(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foobar(self): pass
class TestC(TestP):
def test_1(self): pass
def test_3(self): pass
loader = unittest.TestLoader()
names = ['test_1', 'test_2', 'test_3']
self.assertEqual(loader.getTestCaseNames(TestC), names)
################################################################
### /Tests for TestLoader.getTestCaseNames()
### Tests for TestLoader.testMethodPrefix
################################################################
# "String giving the prefix of method names which will be interpreted as
# test methods"
#
# Implicit in the documentation is that testMethodPrefix is respected by
# all loadTestsFrom* methods.
def test_testMethodPrefix__loadTestsFromTestCase(self):
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
tests_1 = unittest.TestSuite([Foo('foo_bar')])
tests_2 = unittest.TestSuite([Foo('test_1'), Foo('test_2')])
loader = unittest.TestLoader()
loader.testMethodPrefix = 'foo'
self.assertEqual(loader.loadTestsFromTestCase(Foo), tests_1)
loader.testMethodPrefix = 'test'
self.assertEqual(loader.loadTestsFromTestCase(Foo), tests_2)
# "String giving the prefix of method names which will be interpreted as
# test methods"
#
# Implicit in the documentation is that testMethodPrefix is respected by
# all loadTestsFrom* methods.
def test_testMethodPrefix__loadTestsFromModule(self):
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
m.Foo = Foo
tests_1 = [unittest.TestSuite([Foo('foo_bar')])]
tests_2 = [unittest.TestSuite([Foo('test_1'), Foo('test_2')])]
loader = unittest.TestLoader()
loader.testMethodPrefix = 'foo'
self.assertEqual(list(loader.loadTestsFromModule(m)), tests_1)
loader.testMethodPrefix = 'test'
self.assertEqual(list(loader.loadTestsFromModule(m)), tests_2)
# "String giving the prefix of method names which will be interpreted as
# test methods"
#
# Implicit in the documentation is that testMethodPrefix is respected by
# all loadTestsFrom* methods.
def test_testMethodPrefix__loadTestsFromName(self):
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
m.Foo = Foo
tests_1 = unittest.TestSuite([Foo('foo_bar')])
tests_2 = unittest.TestSuite([Foo('test_1'), Foo('test_2')])
loader = unittest.TestLoader()
loader.testMethodPrefix = 'foo'
self.assertEqual(loader.loadTestsFromName('Foo', m), tests_1)
loader.testMethodPrefix = 'test'
self.assertEqual(loader.loadTestsFromName('Foo', m), tests_2)
# "String giving the prefix of method names which will be interpreted as
# test methods"
#
# Implicit in the documentation is that testMethodPrefix is respected by
# all loadTestsFrom* methods.
def test_testMethodPrefix__loadTestsFromNames(self):
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
m.Foo = Foo
tests_1 = unittest.TestSuite([unittest.TestSuite([Foo('foo_bar')])])
tests_2 = unittest.TestSuite([Foo('test_1'), Foo('test_2')])
tests_2 = unittest.TestSuite([tests_2])
loader = unittest.TestLoader()
loader.testMethodPrefix = 'foo'
self.assertEqual(loader.loadTestsFromNames(['Foo'], m), tests_1)
loader.testMethodPrefix = 'test'
self.assertEqual(loader.loadTestsFromNames(['Foo'], m), tests_2)
# "The default value is 'test'"
def test_testMethodPrefix__default_value(self):
loader = unittest.TestLoader()
self.assertEqual(loader.testMethodPrefix, 'test')
################################################################
### /Tests for TestLoader.testMethodPrefix
### Tests for TestLoader.sortTestMethodsUsing
################################################################
# "Function to be used to compare method names when sorting them in
# getTestCaseNames() and all the loadTestsFromX() methods"
def test_sortTestMethodsUsing__loadTestsFromTestCase(self):
def reversed_cmp(x, y):
return -((x > y) - (x < y))
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
loader = unittest.TestLoader()
loader.sortTestMethodsUsing = reversed_cmp
tests = loader.suiteClass([Foo('test_2'), Foo('test_1')])
self.assertEqual(loader.loadTestsFromTestCase(Foo), tests)
# "Function to be used to compare method names when sorting them in
# getTestCaseNames() and all the loadTestsFromX() methods"
def test_sortTestMethodsUsing__loadTestsFromModule(self):
def reversed_cmp(x, y):
return -((x > y) - (x < y))
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
m.Foo = Foo
loader = unittest.TestLoader()
loader.sortTestMethodsUsing = reversed_cmp
tests = [loader.suiteClass([Foo('test_2'), Foo('test_1')])]
self.assertEqual(list(loader.loadTestsFromModule(m)), tests)
# "Function to be used to compare method names when sorting them in
# getTestCaseNames() and all the loadTestsFromX() methods"
def test_sortTestMethodsUsing__loadTestsFromName(self):
def reversed_cmp(x, y):
return -((x > y) - (x < y))
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
m.Foo = Foo
loader = unittest.TestLoader()
loader.sortTestMethodsUsing = reversed_cmp
tests = loader.suiteClass([Foo('test_2'), Foo('test_1')])
self.assertEqual(loader.loadTestsFromName('Foo', m), tests)
# "Function to be used to compare method names when sorting them in
# getTestCaseNames() and all the loadTestsFromX() methods"
def test_sortTestMethodsUsing__loadTestsFromNames(self):
def reversed_cmp(x, y):
return -((x > y) - (x < y))
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
m.Foo = Foo
loader = unittest.TestLoader()
loader.sortTestMethodsUsing = reversed_cmp
tests = [loader.suiteClass([Foo('test_2'), Foo('test_1')])]
self.assertEqual(list(loader.loadTestsFromNames(['Foo'], m)), tests)
# "Function to be used to compare method names when sorting them in
# getTestCaseNames()"
#
# Does it actually affect getTestCaseNames()?
def test_sortTestMethodsUsing__getTestCaseNames(self):
def reversed_cmp(x, y):
return -((x > y) - (x < y))
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
loader = unittest.TestLoader()
loader.sortTestMethodsUsing = reversed_cmp
test_names = ['test_2', 'test_1']
self.assertEqual(loader.getTestCaseNames(Foo), test_names)
# "The default value is the built-in cmp() function"
# Since cmp is now defunct, we simply verify that the results
# occur in the same order as they would with the default sort.
def test_sortTestMethodsUsing__default_value(self):
loader = unittest.TestLoader()
class Foo(unittest.TestCase):
def test_2(self): pass
def test_3(self): pass
def test_1(self): pass
test_names = ['test_2', 'test_3', 'test_1']
self.assertEqual(loader.getTestCaseNames(Foo), sorted(test_names))
# "it can be set to None to disable the sort."
#
# XXX How is this different from reassigning cmp? Are the tests returned
# in a random order or something? This behaviour should die
def test_sortTestMethodsUsing__None(self):
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
loader = unittest.TestLoader()
loader.sortTestMethodsUsing = None
test_names = ['test_2', 'test_1']
self.assertEqual(set(loader.getTestCaseNames(Foo)), set(test_names))
################################################################
### /Tests for TestLoader.sortTestMethodsUsing
### Tests for TestLoader.suiteClass
################################################################
# "Callable object that constructs a test suite from a list of tests."
def test_suiteClass__loadTestsFromTestCase(self):
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
tests = [Foo('test_1'), Foo('test_2')]
loader = unittest.TestLoader()
loader.suiteClass = list
self.assertEqual(loader.loadTestsFromTestCase(Foo), tests)
# It is implicit in the documentation for TestLoader.suiteClass that
# all TestLoader.loadTestsFrom* methods respect it. Let's make sure
def test_suiteClass__loadTestsFromModule(self):
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
m.Foo = Foo
tests = [[Foo('test_1'), Foo('test_2')]]
loader = unittest.TestLoader()
loader.suiteClass = list
self.assertEqual(loader.loadTestsFromModule(m), tests)
# It is implicit in the documentation for TestLoader.suiteClass that
# all TestLoader.loadTestsFrom* methods respect it. Let's make sure
def test_suiteClass__loadTestsFromName(self):
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
m.Foo = Foo
tests = [Foo('test_1'), Foo('test_2')]
loader = unittest.TestLoader()
loader.suiteClass = list
self.assertEqual(loader.loadTestsFromName('Foo', m), tests)
# It is implicit in the documentation for TestLoader.suiteClass that
# all TestLoader.loadTestsFrom* methods respect it. Let's make sure
def test_suiteClass__loadTestsFromNames(self):
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
m.Foo = Foo
tests = [[Foo('test_1'), Foo('test_2')]]
loader = unittest.TestLoader()
loader.suiteClass = list
self.assertEqual(loader.loadTestsFromNames(['Foo'], m), tests)
# "The default value is the TestSuite class"
def test_suiteClass__default_value(self):
loader = unittest.TestLoader()
self.assertIs(loader.suiteClass, unittest.TestSuite)
if __name__ == "__main__":
unittest.main()
| 60,769 | 1,530 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/test_assertions.py | import datetime
import warnings
import weakref
import unittest
from itertools import product
class Test_Assertions(unittest.TestCase):
def test_AlmostEqual(self):
self.assertAlmostEqual(1.00000001, 1.0)
self.assertNotAlmostEqual(1.0000001, 1.0)
self.assertRaises(self.failureException,
self.assertAlmostEqual, 1.0000001, 1.0)
self.assertRaises(self.failureException,
self.assertNotAlmostEqual, 1.00000001, 1.0)
self.assertAlmostEqual(1.1, 1.0, places=0)
self.assertRaises(self.failureException,
self.assertAlmostEqual, 1.1, 1.0, places=1)
self.assertAlmostEqual(0, .1+.1j, places=0)
self.assertNotAlmostEqual(0, .1+.1j, places=1)
self.assertRaises(self.failureException,
self.assertAlmostEqual, 0, .1+.1j, places=1)
self.assertRaises(self.failureException,
self.assertNotAlmostEqual, 0, .1+.1j, places=0)
self.assertAlmostEqual(float('inf'), float('inf'))
self.assertRaises(self.failureException, self.assertNotAlmostEqual,
float('inf'), float('inf'))
def test_AmostEqualWithDelta(self):
self.assertAlmostEqual(1.1, 1.0, delta=0.5)
self.assertAlmostEqual(1.0, 1.1, delta=0.5)
self.assertNotAlmostEqual(1.1, 1.0, delta=0.05)
self.assertNotAlmostEqual(1.0, 1.1, delta=0.05)
self.assertAlmostEqual(1.0, 1.0, delta=0.5)
self.assertRaises(self.failureException, self.assertNotAlmostEqual,
1.0, 1.0, delta=0.5)
self.assertRaises(self.failureException, self.assertAlmostEqual,
1.1, 1.0, delta=0.05)
self.assertRaises(self.failureException, self.assertNotAlmostEqual,
1.1, 1.0, delta=0.5)
self.assertRaises(TypeError, self.assertAlmostEqual,
1.1, 1.0, places=2, delta=2)
self.assertRaises(TypeError, self.assertNotAlmostEqual,
1.1, 1.0, places=2, delta=2)
first = datetime.datetime.now()
second = first + datetime.timedelta(seconds=10)
self.assertAlmostEqual(first, second,
delta=datetime.timedelta(seconds=20))
self.assertNotAlmostEqual(first, second,
delta=datetime.timedelta(seconds=5))
def test_assertRaises(self):
def _raise(e):
raise e
self.assertRaises(KeyError, _raise, KeyError)
self.assertRaises(KeyError, _raise, KeyError("key"))
try:
self.assertRaises(KeyError, lambda: None)
except self.failureException as e:
self.assertIn("KeyError not raised", str(e))
else:
self.fail("assertRaises() didn't fail")
try:
self.assertRaises(KeyError, _raise, ValueError)
except ValueError:
pass
else:
self.fail("assertRaises() didn't let exception pass through")
with self.assertRaises(KeyError) as cm:
try:
raise KeyError
except Exception as e:
exc = e
raise
self.assertIs(cm.exception, exc)
with self.assertRaises(KeyError):
raise KeyError("key")
try:
with self.assertRaises(KeyError):
pass
except self.failureException as e:
self.assertIn("KeyError not raised", str(e))
else:
self.fail("assertRaises() didn't fail")
try:
with self.assertRaises(KeyError):
raise ValueError
except ValueError:
pass
else:
self.fail("assertRaises() didn't let exception pass through")
def test_assertRaises_frames_survival(self):
# Issue #9815: assertRaises should avoid keeping local variables
# in a traceback alive.
class A:
pass
wr = None
class Foo(unittest.TestCase):
def foo(self):
nonlocal wr
a = A()
wr = weakref.ref(a)
try:
raise IOError
except IOError:
raise ValueError
def test_functional(self):
self.assertRaises(ValueError, self.foo)
def test_with(self):
with self.assertRaises(ValueError):
self.foo()
Foo("test_functional").run()
self.assertIsNone(wr())
Foo("test_with").run()
self.assertIsNone(wr())
def testAssertNotRegex(self):
self.assertNotRegex('Ala ma kota', r'r+')
try:
self.assertNotRegex('Ala ma kota', r'k.t', 'Message')
except self.failureException as e:
self.assertIn('Message', e.args[0])
else:
self.fail('assertNotRegex should have failed.')
class TestLongMessage(unittest.TestCase):
"""Test that the individual asserts honour longMessage.
This actually tests all the message behaviour for
asserts that use longMessage."""
def setUp(self):
class TestableTestFalse(unittest.TestCase):
longMessage = False
failureException = self.failureException
def testTest(self):
pass
class TestableTestTrue(unittest.TestCase):
longMessage = True
failureException = self.failureException
def testTest(self):
pass
self.testableTrue = TestableTestTrue('testTest')
self.testableFalse = TestableTestFalse('testTest')
def testDefault(self):
self.assertTrue(unittest.TestCase.longMessage)
def test_formatMsg(self):
self.assertEqual(self.testableFalse._formatMessage(None, "foo"), "foo")
self.assertEqual(self.testableFalse._formatMessage("foo", "bar"), "foo")
self.assertEqual(self.testableTrue._formatMessage(None, "foo"), "foo")
self.assertEqual(self.testableTrue._formatMessage("foo", "bar"), "bar : foo")
# This blows up if _formatMessage uses string concatenation
self.testableTrue._formatMessage(object(), 'foo')
def test_formatMessage_unicode_error(self):
one = ''.join(chr(i) for i in range(255))
# this used to cause a UnicodeDecodeError constructing msg
self.testableTrue._formatMessage(one, '\uFFFD')
def assertMessages(self, methodName, args, errors):
"""
Check that methodName(*args) raises the correct error messages.
errors should be a list of 4 regex that match the error when:
1) longMessage = False and no msg passed;
2) longMessage = False and msg passed;
3) longMessage = True and no msg passed;
4) longMessage = True and msg passed;
"""
def getMethod(i):
useTestableFalse = i < 2
if useTestableFalse:
test = self.testableFalse
else:
test = self.testableTrue
return getattr(test, methodName)
for i, expected_regex in enumerate(errors):
testMethod = getMethod(i)
kwargs = {}
withMsg = i % 2
if withMsg:
kwargs = {"msg": "oops"}
with self.assertRaisesRegex(self.failureException,
expected_regex=expected_regex):
testMethod(*args, **kwargs)
def testAssertTrue(self):
self.assertMessages('assertTrue', (False,),
["^False is not true$", "^oops$", "^False is not true$",
"^False is not true : oops$"])
def testAssertFalse(self):
self.assertMessages('assertFalse', (True,),
["^True is not false$", "^oops$", "^True is not false$",
"^True is not false : oops$"])
def testNotEqual(self):
self.assertMessages('assertNotEqual', (1, 1),
["^1 == 1$", "^oops$", "^1 == 1$",
"^1 == 1 : oops$"])
def testAlmostEqual(self):
self.assertMessages('assertAlmostEqual', (1, 2),
["^1 != 2 within 7 places$", "^oops$",
"^1 != 2 within 7 places$", "^1 != 2 within 7 places : oops$"])
def testNotAlmostEqual(self):
self.assertMessages('assertNotAlmostEqual', (1, 1),
["^1 == 1 within 7 places$", "^oops$",
"^1 == 1 within 7 places$", "^1 == 1 within 7 places : oops$"])
def test_baseAssertEqual(self):
self.assertMessages('_baseAssertEqual', (1, 2),
["^1 != 2$", "^oops$", "^1 != 2$", "^1 != 2 : oops$"])
def testAssertSequenceEqual(self):
# Error messages are multiline so not testing on full message
# assertTupleEqual and assertListEqual delegate to this method
self.assertMessages('assertSequenceEqual', ([], [None]),
[r"\+ \[None\]$", "^oops$", r"\+ \[None\]$",
r"\+ \[None\] : oops$"])
def testAssertSetEqual(self):
self.assertMessages('assertSetEqual', (set(), set([None])),
["None$", "^oops$", "None$",
"None : oops$"])
def testAssertIn(self):
self.assertMessages('assertIn', (None, []),
[r'^None not found in \[\]$', "^oops$",
r'^None not found in \[\]$',
r'^None not found in \[\] : oops$'])
def testAssertNotIn(self):
self.assertMessages('assertNotIn', (None, [None]),
[r'^None unexpectedly found in \[None\]$', "^oops$",
r'^None unexpectedly found in \[None\]$',
r'^None unexpectedly found in \[None\] : oops$'])
def testAssertDictEqual(self):
self.assertMessages('assertDictEqual', ({}, {'key': 'value'}),
[r"\+ \{'key': 'value'\}$", "^oops$",
r"\+ \{'key': 'value'\}$",
r"\+ \{'key': 'value'\} : oops$"])
def testAssertDictContainsSubset(self):
with warnings.catch_warnings():
warnings.simplefilter("ignore", DeprecationWarning)
self.assertMessages('assertDictContainsSubset', ({'key': 'value'}, {}),
["^Missing: 'key'$", "^oops$",
"^Missing: 'key'$",
"^Missing: 'key' : oops$"])
def testAssertMultiLineEqual(self):
self.assertMessages('assertMultiLineEqual', ("", "foo"),
[r"\+ foo$", "^oops$",
r"\+ foo$",
r"\+ foo : oops$"])
def testAssertLess(self):
self.assertMessages('assertLess', (2, 1),
["^2 not less than 1$", "^oops$",
"^2 not less than 1$", "^2 not less than 1 : oops$"])
def testAssertLessEqual(self):
self.assertMessages('assertLessEqual', (2, 1),
["^2 not less than or equal to 1$", "^oops$",
"^2 not less than or equal to 1$",
"^2 not less than or equal to 1 : oops$"])
def testAssertGreater(self):
self.assertMessages('assertGreater', (1, 2),
["^1 not greater than 2$", "^oops$",
"^1 not greater than 2$",
"^1 not greater than 2 : oops$"])
def testAssertGreaterEqual(self):
self.assertMessages('assertGreaterEqual', (1, 2),
["^1 not greater than or equal to 2$", "^oops$",
"^1 not greater than or equal to 2$",
"^1 not greater than or equal to 2 : oops$"])
def testAssertIsNone(self):
self.assertMessages('assertIsNone', ('not None',),
["^'not None' is not None$", "^oops$",
"^'not None' is not None$",
"^'not None' is not None : oops$"])
def testAssertIsNotNone(self):
self.assertMessages('assertIsNotNone', (None,),
["^unexpectedly None$", "^oops$",
"^unexpectedly None$",
"^unexpectedly None : oops$"])
def testAssertIs(self):
self.assertMessages('assertIs', (None, 'foo'),
["^None is not 'foo'$", "^oops$",
"^None is not 'foo'$",
"^None is not 'foo' : oops$"])
def testAssertIsNot(self):
self.assertMessages('assertIsNot', (None, None),
["^unexpectedly identical: None$", "^oops$",
"^unexpectedly identical: None$",
"^unexpectedly identical: None : oops$"])
def testAssertRegex(self):
self.assertMessages('assertRegex', ('foo', 'bar'),
["^Regex didn't match:",
"^oops$",
"^Regex didn't match:",
"^Regex didn't match: (.*) : oops$"])
def testAssertNotRegex(self):
self.assertMessages('assertNotRegex', ('foo', 'foo'),
["^Regex matched:",
"^oops$",
"^Regex matched:",
"^Regex matched: (.*) : oops$"])
def assertMessagesCM(self, methodName, args, func, errors):
"""
Check that the correct error messages are raised while executing:
with method(*args):
func()
*errors* should be a list of 4 regex that match the error when:
1) longMessage = False and no msg passed;
2) longMessage = False and msg passed;
3) longMessage = True and no msg passed;
4) longMessage = True and msg passed;
"""
p = product((self.testableFalse, self.testableTrue),
({}, {"msg": "oops"}))
for (cls, kwargs), err in zip(p, errors):
method = getattr(cls, methodName)
with self.assertRaisesRegex(cls.failureException, err):
with method(*args, **kwargs) as cm:
func()
def testAssertRaises(self):
self.assertMessagesCM('assertRaises', (TypeError,), lambda: None,
['^TypeError not raised$', '^oops$',
'^TypeError not raised$',
'^TypeError not raised : oops$'])
def testAssertRaisesRegex(self):
# test error not raised
self.assertMessagesCM('assertRaisesRegex', (TypeError, 'unused regex'),
lambda: None,
['^TypeError not raised$', '^oops$',
'^TypeError not raised$',
'^TypeError not raised : oops$'])
# test error raised but with wrong message
def raise_wrong_message():
raise TypeError('foo')
self.assertMessagesCM('assertRaisesRegex', (TypeError, 'regex'),
raise_wrong_message,
['^"regex" does not match "foo"$', '^oops$',
'^"regex" does not match "foo"$',
'^"regex" does not match "foo" : oops$'])
def testAssertWarns(self):
self.assertMessagesCM('assertWarns', (UserWarning,), lambda: None,
['^UserWarning not triggered$', '^oops$',
'^UserWarning not triggered$',
'^UserWarning not triggered : oops$'])
def testAssertWarnsRegex(self):
# test error not raised
self.assertMessagesCM('assertWarnsRegex', (UserWarning, 'unused regex'),
lambda: None,
['^UserWarning not triggered$', '^oops$',
'^UserWarning not triggered$',
'^UserWarning not triggered : oops$'])
# test warning raised but with wrong message
def raise_wrong_message():
warnings.warn('foo')
self.assertMessagesCM('assertWarnsRegex', (UserWarning, 'regex'),
raise_wrong_message,
['^"regex" does not match "foo"$', '^oops$',
'^"regex" does not match "foo"$',
'^"regex" does not match "foo" : oops$'])
if __name__ == "__main__":
unittest.main()
| 17,030 | 412 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/test_functiontestcase.py | import unittest
from unittest.test.support import LoggingResult
class Test_FunctionTestCase(unittest.TestCase):
# "Return the number of tests represented by the this test object. For
# TestCase instances, this will always be 1"
def test_countTestCases(self):
test = unittest.FunctionTestCase(lambda: None)
self.assertEqual(test.countTestCases(), 1)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if setUp() raises
# an exception.
def test_run_call_order__error_in_setUp(self):
events = []
result = LoggingResult(events)
def setUp():
events.append('setUp')
raise RuntimeError('raised by setUp')
def test():
events.append('test')
def tearDown():
events.append('tearDown')
expected = ['startTest', 'setUp', 'addError', 'stopTest']
unittest.FunctionTestCase(test, setUp, tearDown).run(result)
self.assertEqual(events, expected)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if the test raises
# an error (as opposed to a failure).
def test_run_call_order__error_in_test(self):
events = []
result = LoggingResult(events)
def setUp():
events.append('setUp')
def test():
events.append('test')
raise RuntimeError('raised by test')
def tearDown():
events.append('tearDown')
expected = ['startTest', 'setUp', 'test', 'tearDown',
'addError', 'stopTest']
unittest.FunctionTestCase(test, setUp, tearDown).run(result)
self.assertEqual(events, expected)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if the test signals
# a failure (as opposed to an error).
def test_run_call_order__failure_in_test(self):
events = []
result = LoggingResult(events)
def setUp():
events.append('setUp')
def test():
events.append('test')
self.fail('raised by test')
def tearDown():
events.append('tearDown')
expected = ['startTest', 'setUp', 'test', 'tearDown',
'addFailure', 'stopTest']
unittest.FunctionTestCase(test, setUp, tearDown).run(result)
self.assertEqual(events, expected)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if tearDown() raises
# an exception.
def test_run_call_order__error_in_tearDown(self):
events = []
result = LoggingResult(events)
def setUp():
events.append('setUp')
def test():
events.append('test')
def tearDown():
events.append('tearDown')
raise RuntimeError('raised by tearDown')
expected = ['startTest', 'setUp', 'test', 'tearDown', 'addError',
'stopTest']
unittest.FunctionTestCase(test, setUp, tearDown).run(result)
self.assertEqual(events, expected)
# "Return a string identifying the specific test case."
#
# Because of the vague nature of the docs, I'm not going to lock this
# test down too much. Really all that can be asserted is that the id()
# will be a string (either 8-byte or unicode -- again, because the docs
# just say "string")
def test_id(self):
test = unittest.FunctionTestCase(lambda: None)
self.assertIsInstance(test.id(), str)
# "Returns a one-line description of the test, or None if no description
# has been provided. The default implementation of this method returns
# the first line of the test method's docstring, if available, or None."
def test_shortDescription__no_docstring(self):
test = unittest.FunctionTestCase(lambda: None)
self.assertEqual(test.shortDescription(), None)
# "Returns a one-line description of the test, or None if no description
# has been provided. The default implementation of this method returns
# the first line of the test method's docstring, if available, or None."
def test_shortDescription__singleline_docstring(self):
desc = "this tests foo"
test = unittest.FunctionTestCase(lambda: None, description=desc)
self.assertEqual(test.shortDescription(), "this tests foo")
if __name__ == "__main__":
unittest.main()
| 5,540 | 149 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/support.py | import unittest
class TestEquality(object):
"""Used as a mixin for TestCase"""
# Check for a valid __eq__ implementation
def test_eq(self):
for obj_1, obj_2 in self.eq_pairs:
self.assertEqual(obj_1, obj_2)
self.assertEqual(obj_2, obj_1)
# Check for a valid __ne__ implementation
def test_ne(self):
for obj_1, obj_2 in self.ne_pairs:
self.assertNotEqual(obj_1, obj_2)
self.assertNotEqual(obj_2, obj_1)
class TestHashing(object):
"""Used as a mixin for TestCase"""
# Check for a valid __hash__ implementation
def test_hash(self):
for obj_1, obj_2 in self.eq_pairs:
try:
if not hash(obj_1) == hash(obj_2):
self.fail("%r and %r do not hash equal" % (obj_1, obj_2))
except Exception as e:
self.fail("Problem hashing %r and %r: %s" % (obj_1, obj_2, e))
for obj_1, obj_2 in self.ne_pairs:
try:
if hash(obj_1) == hash(obj_2):
self.fail("%s and %s hash equal, but shouldn't" %
(obj_1, obj_2))
except Exception as e:
self.fail("Problem hashing %s and %s: %s" % (obj_1, obj_2, e))
class _BaseLoggingResult(unittest.TestResult):
def __init__(self, log):
self._events = log
super().__init__()
def startTest(self, test):
self._events.append('startTest')
super().startTest(test)
def startTestRun(self):
self._events.append('startTestRun')
super().startTestRun()
def stopTest(self, test):
self._events.append('stopTest')
super().stopTest(test)
def stopTestRun(self):
self._events.append('stopTestRun')
super().stopTestRun()
def addFailure(self, *args):
self._events.append('addFailure')
super().addFailure(*args)
def addSuccess(self, *args):
self._events.append('addSuccess')
super().addSuccess(*args)
def addError(self, *args):
self._events.append('addError')
super().addError(*args)
def addSkip(self, *args):
self._events.append('addSkip')
super().addSkip(*args)
def addExpectedFailure(self, *args):
self._events.append('addExpectedFailure')
super().addExpectedFailure(*args)
def addUnexpectedSuccess(self, *args):
self._events.append('addUnexpectedSuccess')
super().addUnexpectedSuccess(*args)
class LegacyLoggingResult(_BaseLoggingResult):
"""
A legacy TestResult implementation, without an addSubTest method,
which records its method calls.
"""
@property
def addSubTest(self):
raise AttributeError
class LoggingResult(_BaseLoggingResult):
"""
A TestResult implementation which records its method calls.
"""
def addSubTest(self, test, subtest, err):
if err is None:
self._events.append('addSubTestSuccess')
else:
self._events.append('addSubTestFailure')
super().addSubTest(test, subtest, err)
class ResultWithNoStartTestRunStopTestRun(object):
"""An object honouring TestResult before startTestRun/stopTestRun."""
def __init__(self):
self.failures = []
self.errors = []
self.testsRun = 0
self.skipped = []
self.expectedFailures = []
self.unexpectedSuccesses = []
self.shouldStop = False
def startTest(self, test):
pass
def stopTest(self, test):
pass
def addError(self, test):
pass
def addFailure(self, test):
pass
def addSuccess(self, test):
pass
def wasSuccessful(self):
return True
| 3,752 | 139 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/_test_warnings.py | # helper module for test_runner.Test_TextTestRunner.test_warnings
"""
This module has a number of tests that raise different kinds of warnings.
When the tests are run, the warnings are caught and their messages are printed
to stdout. This module also accepts an arg that is then passed to
unittest.main to affect the behavior of warnings.
Test_TextTestRunner.test_warnings executes this script with different
combinations of warnings args and -W flags and check that the output is correct.
See #10535.
"""
import sys
import unittest
import warnings
def warnfun():
warnings.warn('rw', RuntimeWarning)
class TestWarnings(unittest.TestCase):
# unittest warnings will be printed at most once per type (max one message
# for the fail* methods, and one for the assert* methods)
def test_assert(self):
self.assertEquals(2+2, 4)
self.assertEquals(2*2, 4)
self.assertEquals(2**2, 4)
def test_fail(self):
self.failUnless(1)
self.failUnless(True)
def test_other_unittest(self):
self.assertAlmostEqual(2+2, 4)
self.assertNotAlmostEqual(4+4, 2)
# these warnings are normally silenced, but they are printed in unittest
def test_deprecation(self):
warnings.warn('dw', DeprecationWarning)
warnings.warn('dw', DeprecationWarning)
warnings.warn('dw', DeprecationWarning)
def test_import(self):
warnings.warn('iw', ImportWarning)
warnings.warn('iw', ImportWarning)
warnings.warn('iw', ImportWarning)
# user warnings should always be printed
def test_warning(self):
warnings.warn('uw')
warnings.warn('uw')
warnings.warn('uw')
# these warnings come from the same place; they will be printed
# only once by default or three times if the 'always' filter is used
def test_function(self):
warnfun()
warnfun()
warnfun()
if __name__ == '__main__':
with warnings.catch_warnings(record=True) as ws:
# if an arg is provided pass it to unittest.main as 'warnings'
if len(sys.argv) == 2:
unittest.main(exit=False, warnings=sys.argv.pop())
else:
unittest.main(exit=False)
# print all the warning messages collected
for w in ws:
print(w.message)
| 2,304 | 74 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/__main__.py | import os
import unittest
def load_tests(loader, standard_tests, pattern):
# top level directory cached on loader instance
this_dir = os.path.dirname(__file__)
pattern = pattern or "test_*.py"
# We are inside unittest.test, so the top-level is two notches up
top_level_dir = os.path.dirname(os.path.dirname(this_dir))
package_tests = loader.discover(start_dir=this_dir, pattern=pattern,
top_level_dir=top_level_dir)
standard_tests.addTests(package_tests)
return standard_tests
if __name__ == '__main__':
unittest.main()
| 596 | 19 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/test_suite.py | import unittest
import gc
import sys
import weakref
from unittest.test.support import LoggingResult, TestEquality
### Support code for Test_TestSuite
################################################################
class Test(object):
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def test_3(self): pass
def runTest(self): pass
def _mk_TestSuite(*names):
return unittest.TestSuite(Test.Foo(n) for n in names)
################################################################
class Test_TestSuite(unittest.TestCase, TestEquality):
### Set up attributes needed by inherited tests
################################################################
# Used by TestEquality.test_eq
eq_pairs = [(unittest.TestSuite(), unittest.TestSuite())
,(unittest.TestSuite(), unittest.TestSuite([]))
,(_mk_TestSuite('test_1'), _mk_TestSuite('test_1'))]
# Used by TestEquality.test_ne
ne_pairs = [(unittest.TestSuite(), _mk_TestSuite('test_1'))
,(unittest.TestSuite([]), _mk_TestSuite('test_1'))
,(_mk_TestSuite('test_1', 'test_2'), _mk_TestSuite('test_1', 'test_3'))
,(_mk_TestSuite('test_1'), _mk_TestSuite('test_2'))]
################################################################
### /Set up attributes needed by inherited tests
### Tests for TestSuite.__init__
################################################################
# "class TestSuite([tests])"
#
# The tests iterable should be optional
def test_init__tests_optional(self):
suite = unittest.TestSuite()
self.assertEqual(suite.countTestCases(), 0)
# countTestCases() still works after tests are run
suite.run(unittest.TestResult())
self.assertEqual(suite.countTestCases(), 0)
# "class TestSuite([tests])"
# ...
# "If tests is given, it must be an iterable of individual test cases
# or other test suites that will be used to build the suite initially"
#
# TestSuite should deal with empty tests iterables by allowing the
# creation of an empty suite
def test_init__empty_tests(self):
suite = unittest.TestSuite([])
self.assertEqual(suite.countTestCases(), 0)
# countTestCases() still works after tests are run
suite.run(unittest.TestResult())
self.assertEqual(suite.countTestCases(), 0)
# "class TestSuite([tests])"
# ...
# "If tests is given, it must be an iterable of individual test cases
# or other test suites that will be used to build the suite initially"
#
# TestSuite should allow any iterable to provide tests
def test_init__tests_from_any_iterable(self):
def tests():
yield unittest.FunctionTestCase(lambda: None)
yield unittest.FunctionTestCase(lambda: None)
suite_1 = unittest.TestSuite(tests())
self.assertEqual(suite_1.countTestCases(), 2)
suite_2 = unittest.TestSuite(suite_1)
self.assertEqual(suite_2.countTestCases(), 2)
suite_3 = unittest.TestSuite(set(suite_1))
self.assertEqual(suite_3.countTestCases(), 2)
# countTestCases() still works after tests are run
suite_1.run(unittest.TestResult())
self.assertEqual(suite_1.countTestCases(), 2)
suite_2.run(unittest.TestResult())
self.assertEqual(suite_2.countTestCases(), 2)
suite_3.run(unittest.TestResult())
self.assertEqual(suite_3.countTestCases(), 2)
# "class TestSuite([tests])"
# ...
# "If tests is given, it must be an iterable of individual test cases
# or other test suites that will be used to build the suite initially"
#
# Does TestSuite() also allow other TestSuite() instances to be present
# in the tests iterable?
def test_init__TestSuite_instances_in_tests(self):
def tests():
ftc = unittest.FunctionTestCase(lambda: None)
yield unittest.TestSuite([ftc])
yield unittest.FunctionTestCase(lambda: None)
suite = unittest.TestSuite(tests())
self.assertEqual(suite.countTestCases(), 2)
# countTestCases() still works after tests are run
suite.run(unittest.TestResult())
self.assertEqual(suite.countTestCases(), 2)
################################################################
### /Tests for TestSuite.__init__
# Container types should support the iter protocol
def test_iter(self):
test1 = unittest.FunctionTestCase(lambda: None)
test2 = unittest.FunctionTestCase(lambda: None)
suite = unittest.TestSuite((test1, test2))
self.assertEqual(list(suite), [test1, test2])
# "Return the number of tests represented by the this test object.
# ...this method is also implemented by the TestSuite class, which can
# return larger [greater than 1] values"
#
# Presumably an empty TestSuite returns 0?
def test_countTestCases_zero_simple(self):
suite = unittest.TestSuite()
self.assertEqual(suite.countTestCases(), 0)
# "Return the number of tests represented by the this test object.
# ...this method is also implemented by the TestSuite class, which can
# return larger [greater than 1] values"
#
# Presumably an empty TestSuite (even if it contains other empty
# TestSuite instances) returns 0?
def test_countTestCases_zero_nested(self):
class Test1(unittest.TestCase):
def test(self):
pass
suite = unittest.TestSuite([unittest.TestSuite()])
self.assertEqual(suite.countTestCases(), 0)
# "Return the number of tests represented by the this test object.
# ...this method is also implemented by the TestSuite class, which can
# return larger [greater than 1] values"
def test_countTestCases_simple(self):
test1 = unittest.FunctionTestCase(lambda: None)
test2 = unittest.FunctionTestCase(lambda: None)
suite = unittest.TestSuite((test1, test2))
self.assertEqual(suite.countTestCases(), 2)
# countTestCases() still works after tests are run
suite.run(unittest.TestResult())
self.assertEqual(suite.countTestCases(), 2)
# "Return the number of tests represented by the this test object.
# ...this method is also implemented by the TestSuite class, which can
# return larger [greater than 1] values"
#
# Make sure this holds for nested TestSuite instances, too
def test_countTestCases_nested(self):
class Test1(unittest.TestCase):
def test1(self): pass
def test2(self): pass
test2 = unittest.FunctionTestCase(lambda: None)
test3 = unittest.FunctionTestCase(lambda: None)
child = unittest.TestSuite((Test1('test2'), test2))
parent = unittest.TestSuite((test3, child, Test1('test1')))
self.assertEqual(parent.countTestCases(), 4)
# countTestCases() still works after tests are run
parent.run(unittest.TestResult())
self.assertEqual(parent.countTestCases(), 4)
self.assertEqual(child.countTestCases(), 2)
# "Run the tests associated with this suite, collecting the result into
# the test result object passed as result."
#
# And if there are no tests? What then?
def test_run__empty_suite(self):
events = []
result = LoggingResult(events)
suite = unittest.TestSuite()
suite.run(result)
self.assertEqual(events, [])
# "Note that unlike TestCase.run(), TestSuite.run() requires the
# "result object to be passed in."
def test_run__requires_result(self):
suite = unittest.TestSuite()
try:
suite.run()
except TypeError:
pass
else:
self.fail("Failed to raise TypeError")
# "Run the tests associated with this suite, collecting the result into
# the test result object passed as result."
def test_run(self):
events = []
result = LoggingResult(events)
class LoggingCase(unittest.TestCase):
def run(self, result):
events.append('run %s' % self._testMethodName)
def test1(self): pass
def test2(self): pass
tests = [LoggingCase('test1'), LoggingCase('test2')]
unittest.TestSuite(tests).run(result)
self.assertEqual(events, ['run test1', 'run test2'])
# "Add a TestCase ... to the suite"
def test_addTest__TestCase(self):
class Foo(unittest.TestCase):
def test(self): pass
test = Foo('test')
suite = unittest.TestSuite()
suite.addTest(test)
self.assertEqual(suite.countTestCases(), 1)
self.assertEqual(list(suite), [test])
# countTestCases() still works after tests are run
suite.run(unittest.TestResult())
self.assertEqual(suite.countTestCases(), 1)
# "Add a ... TestSuite to the suite"
def test_addTest__TestSuite(self):
class Foo(unittest.TestCase):
def test(self): pass
suite_2 = unittest.TestSuite([Foo('test')])
suite = unittest.TestSuite()
suite.addTest(suite_2)
self.assertEqual(suite.countTestCases(), 1)
self.assertEqual(list(suite), [suite_2])
# countTestCases() still works after tests are run
suite.run(unittest.TestResult())
self.assertEqual(suite.countTestCases(), 1)
# "Add all the tests from an iterable of TestCase and TestSuite
# instances to this test suite."
#
# "This is equivalent to iterating over tests, calling addTest() for
# each element"
def test_addTests(self):
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
test_1 = Foo('test_1')
test_2 = Foo('test_2')
inner_suite = unittest.TestSuite([test_2])
def gen():
yield test_1
yield test_2
yield inner_suite
suite_1 = unittest.TestSuite()
suite_1.addTests(gen())
self.assertEqual(list(suite_1), list(gen()))
# "This is equivalent to iterating over tests, calling addTest() for
# each element"
suite_2 = unittest.TestSuite()
for t in gen():
suite_2.addTest(t)
self.assertEqual(suite_1, suite_2)
# "Add all the tests from an iterable of TestCase and TestSuite
# instances to this test suite."
#
# What happens if it doesn't get an iterable?
def test_addTest__noniterable(self):
suite = unittest.TestSuite()
try:
suite.addTests(5)
except TypeError:
pass
else:
self.fail("Failed to raise TypeError")
def test_addTest__noncallable(self):
suite = unittest.TestSuite()
self.assertRaises(TypeError, suite.addTest, 5)
def test_addTest__casesuiteclass(self):
suite = unittest.TestSuite()
self.assertRaises(TypeError, suite.addTest, Test_TestSuite)
self.assertRaises(TypeError, suite.addTest, unittest.TestSuite)
def test_addTests__string(self):
suite = unittest.TestSuite()
self.assertRaises(TypeError, suite.addTests, "foo")
def test_function_in_suite(self):
def f(_):
pass
suite = unittest.TestSuite()
suite.addTest(f)
# when the bug is fixed this line will not crash
suite.run(unittest.TestResult())
def test_remove_test_at_index(self):
if not unittest.BaseTestSuite._cleanup:
raise unittest.SkipTest("Suite cleanup is disabled")
suite = unittest.TestSuite()
suite._tests = [1, 2, 3]
suite._removeTestAtIndex(1)
self.assertEqual([1, None, 3], suite._tests)
def test_remove_test_at_index_not_indexable(self):
if not unittest.BaseTestSuite._cleanup:
raise unittest.SkipTest("Suite cleanup is disabled")
suite = unittest.TestSuite()
suite._tests = None
# if _removeAtIndex raises for noniterables this next line will break
suite._removeTestAtIndex(2)
def assert_garbage_collect_test_after_run(self, TestSuiteClass):
if not unittest.BaseTestSuite._cleanup:
raise unittest.SkipTest("Suite cleanup is disabled")
class Foo(unittest.TestCase):
def test_nothing(self):
pass
test = Foo('test_nothing')
wref = weakref.ref(test)
suite = TestSuiteClass([wref()])
suite.run(unittest.TestResult())
del test
# for the benefit of non-reference counting implementations
gc.collect()
self.assertEqual(suite._tests, [None])
self.assertIsNone(wref())
def test_garbage_collect_test_after_run_BaseTestSuite(self):
self.assert_garbage_collect_test_after_run(unittest.BaseTestSuite)
def test_garbage_collect_test_after_run_TestSuite(self):
self.assert_garbage_collect_test_after_run(unittest.TestSuite)
def test_basetestsuite(self):
class Test(unittest.TestCase):
wasSetUp = False
wasTornDown = False
@classmethod
def setUpClass(cls):
cls.wasSetUp = True
@classmethod
def tearDownClass(cls):
cls.wasTornDown = True
def testPass(self):
pass
def testFail(self):
fail
class Module(object):
wasSetUp = False
wasTornDown = False
@staticmethod
def setUpModule():
Module.wasSetUp = True
@staticmethod
def tearDownModule():
Module.wasTornDown = True
Test.__module__ = 'Module'
sys.modules['Module'] = Module
self.addCleanup(sys.modules.pop, 'Module')
suite = unittest.BaseTestSuite()
suite.addTests([Test('testPass'), Test('testFail')])
self.assertEqual(suite.countTestCases(), 2)
result = unittest.TestResult()
suite.run(result)
self.assertFalse(Module.wasSetUp)
self.assertFalse(Module.wasTornDown)
self.assertFalse(Test.wasSetUp)
self.assertFalse(Test.wasTornDown)
self.assertEqual(len(result.errors), 1)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 2)
self.assertEqual(suite.countTestCases(), 2)
def test_overriding_call(self):
class MySuite(unittest.TestSuite):
called = False
def __call__(self, *args, **kw):
self.called = True
unittest.TestSuite.__call__(self, *args, **kw)
suite = MySuite()
result = unittest.TestResult()
wrapper = unittest.TestSuite()
wrapper.addTest(suite)
wrapper(result)
self.assertTrue(suite.called)
# reusing results should be permitted even if abominable
self.assertFalse(result._testRunEntered)
if __name__ == '__main__':
unittest.main()
| 15,184 | 448 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/test_program.py | import io
import os
import sys
from test import support
import unittest
import unittest.test
class Test_TestProgram(unittest.TestCase):
def test_discovery_from_dotted_path(self):
loader = unittest.TestLoader()
tests = [self]
expectedPath = os.path.abspath(os.path.dirname(unittest.test.__file__))
self.wasRun = False
def _find_tests(start_dir, pattern):
self.wasRun = True
self.assertEqual(start_dir, expectedPath)
return tests
loader._find_tests = _find_tests
suite = loader.discover('unittest.test')
self.assertTrue(self.wasRun)
self.assertEqual(suite._tests, tests)
# Horrible white box test
def testNoExit(self):
result = object()
test = object()
class FakeRunner(object):
def run(self, test):
self.test = test
return result
runner = FakeRunner()
oldParseArgs = unittest.TestProgram.parseArgs
def restoreParseArgs():
unittest.TestProgram.parseArgs = oldParseArgs
unittest.TestProgram.parseArgs = lambda *args: None
self.addCleanup(restoreParseArgs)
def removeTest():
del unittest.TestProgram.test
unittest.TestProgram.test = test
self.addCleanup(removeTest)
program = unittest.TestProgram(testRunner=runner, exit=False, verbosity=2)
self.assertEqual(program.result, result)
self.assertEqual(runner.test, test)
self.assertEqual(program.verbosity, 2)
class FooBar(unittest.TestCase):
def testPass(self):
assert True
def testFail(self):
assert False
class FooBarLoader(unittest.TestLoader):
"""Test loader that returns a suite containing FooBar."""
def loadTestsFromModule(self, module):
return self.suiteClass(
[self.loadTestsFromTestCase(Test_TestProgram.FooBar)])
def loadTestsFromNames(self, names, module):
return self.suiteClass(
[self.loadTestsFromTestCase(Test_TestProgram.FooBar)])
def test_defaultTest_with_string(self):
class FakeRunner(object):
def run(self, test):
self.test = test
return True
old_argv = sys.argv
sys.argv = ['faketest']
runner = FakeRunner()
program = unittest.TestProgram(testRunner=runner, exit=False,
defaultTest='unittest.test',
testLoader=self.FooBarLoader())
sys.argv = old_argv
self.assertEqual(('unittest.test',), program.testNames)
def test_defaultTest_with_iterable(self):
class FakeRunner(object):
def run(self, test):
self.test = test
return True
old_argv = sys.argv
sys.argv = ['faketest']
runner = FakeRunner()
program = unittest.TestProgram(
testRunner=runner, exit=False,
defaultTest=['unittest.test', 'unittest.test2'],
testLoader=self.FooBarLoader())
sys.argv = old_argv
self.assertEqual(['unittest.test', 'unittest.test2'],
program.testNames)
def test_NonExit(self):
program = unittest.main(exit=False,
argv=["foobar"],
testRunner=unittest.TextTestRunner(stream=io.StringIO()),
testLoader=self.FooBarLoader())
self.assertTrue(hasattr(program, 'result'))
def test_Exit(self):
self.assertRaises(
SystemExit,
unittest.main,
argv=["foobar"],
testRunner=unittest.TextTestRunner(stream=io.StringIO()),
exit=True,
testLoader=self.FooBarLoader())
def test_ExitAsDefault(self):
self.assertRaises(
SystemExit,
unittest.main,
argv=["foobar"],
testRunner=unittest.TextTestRunner(stream=io.StringIO()),
testLoader=self.FooBarLoader())
class InitialisableProgram(unittest.TestProgram):
exit = False
result = None
verbosity = 1
defaultTest = None
tb_locals = False
testRunner = None
testLoader = unittest.defaultTestLoader
module = '__main__'
progName = 'test'
test = 'test'
def __init__(self, *args):
pass
RESULT = object()
class FakeRunner(object):
initArgs = None
test = None
raiseError = 0
def __init__(self, **kwargs):
FakeRunner.initArgs = kwargs
if FakeRunner.raiseError:
FakeRunner.raiseError -= 1
raise TypeError
def run(self, test):
FakeRunner.test = test
return RESULT
class TestCommandLineArgs(unittest.TestCase):
def setUp(self):
self.program = InitialisableProgram()
self.program.createTests = lambda: None
FakeRunner.initArgs = None
FakeRunner.test = None
FakeRunner.raiseError = 0
def testVerbosity(self):
program = self.program
for opt in '-q', '--quiet':
program.verbosity = 1
program.parseArgs([None, opt])
self.assertEqual(program.verbosity, 0)
for opt in '-v', '--verbose':
program.verbosity = 1
program.parseArgs([None, opt])
self.assertEqual(program.verbosity, 2)
def testBufferCatchFailfast(self):
program = self.program
for arg, attr in (('buffer', 'buffer'), ('failfast', 'failfast'),
('catch', 'catchbreak')):
if attr == 'catch' and not hasInstallHandler:
continue
setattr(program, attr, None)
program.parseArgs([None])
self.assertIs(getattr(program, attr), False)
false = []
setattr(program, attr, false)
program.parseArgs([None])
self.assertIs(getattr(program, attr), false)
true = [42]
setattr(program, attr, true)
program.parseArgs([None])
self.assertIs(getattr(program, attr), true)
short_opt = '-%s' % arg[0]
long_opt = '--%s' % arg
for opt in short_opt, long_opt:
setattr(program, attr, None)
program.parseArgs([None, opt])
self.assertIs(getattr(program, attr), True)
setattr(program, attr, False)
with support.captured_stderr() as stderr, \
self.assertRaises(SystemExit) as cm:
program.parseArgs([None, opt])
self.assertEqual(cm.exception.args, (2,))
setattr(program, attr, True)
with support.captured_stderr() as stderr, \
self.assertRaises(SystemExit) as cm:
program.parseArgs([None, opt])
self.assertEqual(cm.exception.args, (2,))
def testWarning(self):
"""Test the warnings argument"""
# see #10535
class FakeTP(unittest.TestProgram):
def parseArgs(self, *args, **kw): pass
def runTests(self, *args, **kw): pass
warnoptions = sys.warnoptions[:]
try:
sys.warnoptions[:] = []
# no warn options, no arg -> default
self.assertEqual(FakeTP().warnings, 'default')
# no warn options, w/ arg -> arg value
self.assertEqual(FakeTP(warnings='ignore').warnings, 'ignore')
sys.warnoptions[:] = ['somevalue']
# warn options, no arg -> None
# warn options, w/ arg -> arg value
self.assertEqual(FakeTP().warnings, None)
self.assertEqual(FakeTP(warnings='ignore').warnings, 'ignore')
finally:
sys.warnoptions[:] = warnoptions
def testRunTestsRunnerClass(self):
program = self.program
program.testRunner = FakeRunner
program.verbosity = 'verbosity'
program.failfast = 'failfast'
program.buffer = 'buffer'
program.warnings = 'warnings'
program.runTests()
self.assertEqual(FakeRunner.initArgs, {'verbosity': 'verbosity',
'failfast': 'failfast',
'buffer': 'buffer',
'tb_locals': False,
'warnings': 'warnings'})
self.assertEqual(FakeRunner.test, 'test')
self.assertIs(program.result, RESULT)
def testRunTestsRunnerInstance(self):
program = self.program
program.testRunner = FakeRunner()
FakeRunner.initArgs = None
program.runTests()
# A new FakeRunner should not have been instantiated
self.assertIsNone(FakeRunner.initArgs)
self.assertEqual(FakeRunner.test, 'test')
self.assertIs(program.result, RESULT)
def test_locals(self):
program = self.program
program.testRunner = FakeRunner
program.parseArgs([None, '--locals'])
self.assertEqual(True, program.tb_locals)
program.runTests()
self.assertEqual(FakeRunner.initArgs, {'buffer': False,
'failfast': False,
'tb_locals': True,
'verbosity': 1,
'warnings': None})
def testRunTestsOldRunnerClass(self):
program = self.program
# Two TypeErrors are needed to fall all the way back to old-style
# runners - one to fail tb_locals, one to fail buffer etc.
FakeRunner.raiseError = 2
program.testRunner = FakeRunner
program.verbosity = 'verbosity'
program.failfast = 'failfast'
program.buffer = 'buffer'
program.test = 'test'
program.runTests()
# If initialising raises a type error it should be retried
# without the new keyword arguments
self.assertEqual(FakeRunner.initArgs, {})
self.assertEqual(FakeRunner.test, 'test')
self.assertIs(program.result, RESULT)
def testCatchBreakInstallsHandler(self):
module = sys.modules['unittest.main']
original = module.installHandler
def restore():
module.installHandler = original
self.addCleanup(restore)
self.installed = False
def fakeInstallHandler():
self.installed = True
module.installHandler = fakeInstallHandler
program = self.program
program.catchbreak = True
program.testRunner = FakeRunner
program.runTests()
self.assertTrue(self.installed)
def _patch_isfile(self, names, exists=True):
def isfile(path):
return path in names
original = os.path.isfile
os.path.isfile = isfile
def restore():
os.path.isfile = original
self.addCleanup(restore)
def testParseArgsFileNames(self):
# running tests with filenames instead of module names
program = self.program
argv = ['progname', 'foo.py', 'bar.Py', 'baz.PY', 'wing.txt']
self._patch_isfile(argv)
program.createTests = lambda: None
program.parseArgs(argv)
# note that 'wing.txt' is not a Python file so the name should
# *not* be converted to a module name
expected = ['foo', 'bar', 'baz', 'wing.txt']
self.assertEqual(program.testNames, expected)
def testParseArgsFilePaths(self):
program = self.program
argv = ['progname', 'foo/bar/baz.py', 'green\\red.py']
self._patch_isfile(argv)
program.createTests = lambda: None
program.parseArgs(argv)
expected = ['foo.bar.baz', 'green.red']
self.assertEqual(program.testNames, expected)
def testParseArgsNonExistentFiles(self):
program = self.program
argv = ['progname', 'foo/bar/baz.py', 'green\\red.py']
self._patch_isfile([])
program.createTests = lambda: None
program.parseArgs(argv)
self.assertEqual(program.testNames, argv[1:])
def testParseArgsAbsolutePathsThatCanBeConverted(self):
cur_dir = os.getcwd()
program = self.program
def _join(name):
return os.path.join(cur_dir, name)
argv = ['progname', _join('foo/bar/baz.py'), _join('green\\red.py')]
self._patch_isfile(argv)
program.createTests = lambda: None
program.parseArgs(argv)
expected = ['foo.bar.baz', 'green.red']
self.assertEqual(program.testNames, expected)
def testParseArgsAbsolutePathsThatCannotBeConverted(self):
program = self.program
# even on Windows '/...' is considered absolute by os.path.abspath
argv = ['progname', '/foo/bar/baz.py', '/green/red.py']
self._patch_isfile(argv)
program.createTests = lambda: None
program.parseArgs(argv)
self.assertEqual(program.testNames, argv[1:])
# it may be better to use platform specific functions to normalise paths
# rather than accepting '.PY' and '\' as file separator on Linux / Mac
# it would also be better to check that a filename is a valid module
# identifier (we have a regex for this in loader.py)
# for invalid filenames should we raise a useful error rather than
# leaving the current error message (import of filename fails) in place?
if __name__ == '__main__':
unittest.main()
| 13,721 | 415 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/test_skipping.py | import unittest
from unittest.test.support import LoggingResult
class Test_TestSkipping(unittest.TestCase):
def test_skipping(self):
class Foo(unittest.TestCase):
def test_skip_me(self):
self.skipTest("skip")
events = []
result = LoggingResult(events)
test = Foo("test_skip_me")
test.run(result)
self.assertEqual(events, ['startTest', 'addSkip', 'stopTest'])
self.assertEqual(result.skipped, [(test, "skip")])
# Try letting setUp skip the test now.
class Foo(unittest.TestCase):
def setUp(self):
self.skipTest("testing")
def test_nothing(self): pass
events = []
result = LoggingResult(events)
test = Foo("test_nothing")
test.run(result)
self.assertEqual(events, ['startTest', 'addSkip', 'stopTest'])
self.assertEqual(result.skipped, [(test, "testing")])
self.assertEqual(result.testsRun, 1)
def test_skipping_subtests(self):
class Foo(unittest.TestCase):
def test_skip_me(self):
with self.subTest(a=1):
with self.subTest(b=2):
self.skipTest("skip 1")
self.skipTest("skip 2")
self.skipTest("skip 3")
events = []
result = LoggingResult(events)
test = Foo("test_skip_me")
test.run(result)
self.assertEqual(events, ['startTest', 'addSkip', 'addSkip',
'addSkip', 'stopTest'])
self.assertEqual(len(result.skipped), 3)
subtest, msg = result.skipped[0]
self.assertEqual(msg, "skip 1")
self.assertIsInstance(subtest, unittest.TestCase)
self.assertIsNot(subtest, test)
subtest, msg = result.skipped[1]
self.assertEqual(msg, "skip 2")
self.assertIsInstance(subtest, unittest.TestCase)
self.assertIsNot(subtest, test)
self.assertEqual(result.skipped[2], (test, "skip 3"))
def test_skipping_decorators(self):
op_table = ((unittest.skipUnless, False, True),
(unittest.skipIf, True, False))
for deco, do_skip, dont_skip in op_table:
class Foo(unittest.TestCase):
@deco(do_skip, "testing")
def test_skip(self): pass
@deco(dont_skip, "testing")
def test_dont_skip(self): pass
test_do_skip = Foo("test_skip")
test_dont_skip = Foo("test_dont_skip")
suite = unittest.TestSuite([test_do_skip, test_dont_skip])
events = []
result = LoggingResult(events)
suite.run(result)
self.assertEqual(len(result.skipped), 1)
expected = ['startTest', 'addSkip', 'stopTest',
'startTest', 'addSuccess', 'stopTest']
self.assertEqual(events, expected)
self.assertEqual(result.testsRun, 2)
self.assertEqual(result.skipped, [(test_do_skip, "testing")])
self.assertTrue(result.wasSuccessful())
def test_skip_class(self):
@unittest.skip("testing")
class Foo(unittest.TestCase):
def test_1(self):
record.append(1)
record = []
result = unittest.TestResult()
test = Foo("test_1")
suite = unittest.TestSuite([test])
suite.run(result)
self.assertEqual(result.skipped, [(test, "testing")])
self.assertEqual(record, [])
def test_skip_non_unittest_class(self):
@unittest.skip("testing")
class Mixin:
def test_1(self):
record.append(1)
class Foo(Mixin, unittest.TestCase):
pass
record = []
result = unittest.TestResult()
test = Foo("test_1")
suite = unittest.TestSuite([test])
suite.run(result)
self.assertEqual(result.skipped, [(test, "testing")])
self.assertEqual(record, [])
def test_expected_failure(self):
class Foo(unittest.TestCase):
@unittest.expectedFailure
def test_die(self):
self.fail("help me!")
events = []
result = LoggingResult(events)
test = Foo("test_die")
test.run(result)
self.assertEqual(events,
['startTest', 'addExpectedFailure', 'stopTest'])
self.assertEqual(result.expectedFailures[0][0], test)
self.assertTrue(result.wasSuccessful())
def test_expected_failure_with_wrapped_class(self):
@unittest.expectedFailure
class Foo(unittest.TestCase):
def test_1(self):
self.assertTrue(False)
events = []
result = LoggingResult(events)
test = Foo("test_1")
test.run(result)
self.assertEqual(events,
['startTest', 'addExpectedFailure', 'stopTest'])
self.assertEqual(result.expectedFailures[0][0], test)
self.assertTrue(result.wasSuccessful())
def test_expected_failure_with_wrapped_subclass(self):
class Foo(unittest.TestCase):
def test_1(self):
self.assertTrue(False)
@unittest.expectedFailure
class Bar(Foo):
pass
events = []
result = LoggingResult(events)
test = Bar("test_1")
test.run(result)
self.assertEqual(events,
['startTest', 'addExpectedFailure', 'stopTest'])
self.assertEqual(result.expectedFailures[0][0], test)
self.assertTrue(result.wasSuccessful())
def test_expected_failure_subtests(self):
# A failure in any subtest counts as the expected failure of the
# whole test.
class Foo(unittest.TestCase):
@unittest.expectedFailure
def test_die(self):
with self.subTest():
# This one succeeds
pass
with self.subTest():
self.fail("help me!")
with self.subTest():
# This one doesn't get executed
self.fail("shouldn't come here")
events = []
result = LoggingResult(events)
test = Foo("test_die")
test.run(result)
self.assertEqual(events,
['startTest', 'addSubTestSuccess',
'addExpectedFailure', 'stopTest'])
self.assertEqual(len(result.expectedFailures), 1)
self.assertIs(result.expectedFailures[0][0], test)
self.assertTrue(result.wasSuccessful())
def test_unexpected_success(self):
class Foo(unittest.TestCase):
@unittest.expectedFailure
def test_die(self):
pass
events = []
result = LoggingResult(events)
test = Foo("test_die")
test.run(result)
self.assertEqual(events,
['startTest', 'addUnexpectedSuccess', 'stopTest'])
self.assertFalse(result.failures)
self.assertEqual(result.unexpectedSuccesses, [test])
self.assertFalse(result.wasSuccessful())
def test_unexpected_success_subtests(self):
# Success in all subtests counts as the unexpected success of
# the whole test.
class Foo(unittest.TestCase):
@unittest.expectedFailure
def test_die(self):
with self.subTest():
# This one succeeds
pass
with self.subTest():
# So does this one
pass
events = []
result = LoggingResult(events)
test = Foo("test_die")
test.run(result)
self.assertEqual(events,
['startTest',
'addSubTestSuccess', 'addSubTestSuccess',
'addUnexpectedSuccess', 'stopTest'])
self.assertFalse(result.failures)
self.assertEqual(result.unexpectedSuccesses, [test])
self.assertFalse(result.wasSuccessful())
def test_skip_doesnt_run_setup(self):
class Foo(unittest.TestCase):
wasSetUp = False
wasTornDown = False
def setUp(self):
Foo.wasSetUp = True
def tornDown(self):
Foo.wasTornDown = True
@unittest.skip('testing')
def test_1(self):
pass
result = unittest.TestResult()
test = Foo("test_1")
suite = unittest.TestSuite([test])
suite.run(result)
self.assertEqual(result.skipped, [(test, "testing")])
self.assertFalse(Foo.wasSetUp)
self.assertFalse(Foo.wasTornDown)
def test_decorated_skip(self):
def decorator(func):
def inner(*a):
return func(*a)
return inner
class Foo(unittest.TestCase):
@decorator
@unittest.skip('testing')
def test_1(self):
pass
result = unittest.TestResult()
test = Foo("test_1")
suite = unittest.TestSuite([test])
suite.run(result)
self.assertEqual(result.skipped, [(test, "testing")])
if __name__ == "__main__":
unittest.main()
| 9,316 | 261 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/test_result.py | import io
import sys
import textwrap
from test import support
import traceback
import unittest
class MockTraceback(object):
class TracebackException:
def __init__(self, *args, **kwargs):
self.capture_locals = kwargs.get('capture_locals', False)
def format(self):
result = ['A traceback']
if self.capture_locals:
result.append('locals')
return result
def restore_traceback():
unittest.result.traceback = traceback
class Test_TestResult(unittest.TestCase):
# Note: there are not separate tests for TestResult.wasSuccessful(),
# TestResult.errors, TestResult.failures, TestResult.testsRun or
# TestResult.shouldStop because these only have meaning in terms of
# other TestResult methods.
#
# Accordingly, tests for the aforenamed attributes are incorporated
# in with the tests for the defining methods.
################################################################
def test_init(self):
result = unittest.TestResult()
self.assertTrue(result.wasSuccessful())
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 0)
self.assertEqual(result.shouldStop, False)
self.assertIsNone(result._stdout_buffer)
self.assertIsNone(result._stderr_buffer)
# "This method can be called to signal that the set of tests being
# run should be aborted by setting the TestResult's shouldStop
# attribute to True."
def test_stop(self):
result = unittest.TestResult()
result.stop()
self.assertEqual(result.shouldStop, True)
# "Called when the test case test is about to be run. The default
# implementation simply increments the instance's testsRun counter."
def test_startTest(self):
class Foo(unittest.TestCase):
def test_1(self):
pass
test = Foo('test_1')
result = unittest.TestResult()
result.startTest(test)
self.assertTrue(result.wasSuccessful())
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
result.stopTest(test)
# "Called after the test case test has been executed, regardless of
# the outcome. The default implementation does nothing."
def test_stopTest(self):
class Foo(unittest.TestCase):
def test_1(self):
pass
test = Foo('test_1')
result = unittest.TestResult()
result.startTest(test)
self.assertTrue(result.wasSuccessful())
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
result.stopTest(test)
# Same tests as above; make sure nothing has changed
self.assertTrue(result.wasSuccessful())
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
# "Called before and after tests are run. The default implementation does nothing."
def test_startTestRun_stopTestRun(self):
result = unittest.TestResult()
result.startTestRun()
result.stopTestRun()
# "addSuccess(test)"
# ...
# "Called when the test case test succeeds"
# ...
# "wasSuccessful() - Returns True if all tests run so far have passed,
# otherwise returns False"
# ...
# "testsRun - The total number of tests run so far."
# ...
# "errors - A list containing 2-tuples of TestCase instances and
# formatted tracebacks. Each tuple represents a test which raised an
# unexpected exception. Contains formatted
# tracebacks instead of sys.exc_info() results."
# ...
# "failures - A list containing 2-tuples of TestCase instances and
# formatted tracebacks. Each tuple represents a test where a failure was
# explicitly signalled using the TestCase.fail*() or TestCase.assert*()
# methods. Contains formatted tracebacks instead
# of sys.exc_info() results."
def test_addSuccess(self):
class Foo(unittest.TestCase):
def test_1(self):
pass
test = Foo('test_1')
result = unittest.TestResult()
result.startTest(test)
result.addSuccess(test)
result.stopTest(test)
self.assertTrue(result.wasSuccessful())
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
# "addFailure(test, err)"
# ...
# "Called when the test case test signals a failure. err is a tuple of
# the form returned by sys.exc_info(): (type, value, traceback)"
# ...
# "wasSuccessful() - Returns True if all tests run so far have passed,
# otherwise returns False"
# ...
# "testsRun - The total number of tests run so far."
# ...
# "errors - A list containing 2-tuples of TestCase instances and
# formatted tracebacks. Each tuple represents a test which raised an
# unexpected exception. Contains formatted
# tracebacks instead of sys.exc_info() results."
# ...
# "failures - A list containing 2-tuples of TestCase instances and
# formatted tracebacks. Each tuple represents a test where a failure was
# explicitly signalled using the TestCase.fail*() or TestCase.assert*()
# methods. Contains formatted tracebacks instead
# of sys.exc_info() results."
def test_addFailure(self):
class Foo(unittest.TestCase):
def test_1(self):
pass
test = Foo('test_1')
try:
test.fail("foo")
except:
exc_info_tuple = sys.exc_info()
result = unittest.TestResult()
result.startTest(test)
result.addFailure(test, exc_info_tuple)
result.stopTest(test)
self.assertFalse(result.wasSuccessful())
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.failures), 1)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
test_case, formatted_exc = result.failures[0]
self.assertIs(test_case, test)
self.assertIsInstance(formatted_exc, str)
# "addError(test, err)"
# ...
# "Called when the test case test raises an unexpected exception err
# is a tuple of the form returned by sys.exc_info():
# (type, value, traceback)"
# ...
# "wasSuccessful() - Returns True if all tests run so far have passed,
# otherwise returns False"
# ...
# "testsRun - The total number of tests run so far."
# ...
# "errors - A list containing 2-tuples of TestCase instances and
# formatted tracebacks. Each tuple represents a test which raised an
# unexpected exception. Contains formatted
# tracebacks instead of sys.exc_info() results."
# ...
# "failures - A list containing 2-tuples of TestCase instances and
# formatted tracebacks. Each tuple represents a test where a failure was
# explicitly signalled using the TestCase.fail*() or TestCase.assert*()
# methods. Contains formatted tracebacks instead
# of sys.exc_info() results."
def test_addError(self):
class Foo(unittest.TestCase):
def test_1(self):
pass
test = Foo('test_1')
try:
raise TypeError()
except:
exc_info_tuple = sys.exc_info()
result = unittest.TestResult()
result.startTest(test)
result.addError(test, exc_info_tuple)
result.stopTest(test)
self.assertFalse(result.wasSuccessful())
self.assertEqual(len(result.errors), 1)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
test_case, formatted_exc = result.errors[0]
self.assertIs(test_case, test)
self.assertIsInstance(formatted_exc, str)
def test_addError_locals(self):
class Foo(unittest.TestCase):
def test_1(self):
1/0
test = Foo('test_1')
result = unittest.TestResult()
result.tb_locals = True
unittest.result.traceback = MockTraceback
self.addCleanup(restore_traceback)
result.startTestRun()
test.run(result)
result.stopTestRun()
self.assertEqual(len(result.errors), 1)
test_case, formatted_exc = result.errors[0]
self.assertEqual('A tracebacklocals', formatted_exc)
def test_addSubTest(self):
class Foo(unittest.TestCase):
def test_1(self):
nonlocal subtest
with self.subTest(foo=1):
subtest = self._subtest
try:
1/0
except ZeroDivisionError:
exc_info_tuple = sys.exc_info()
# Register an error by hand (to check the API)
result.addSubTest(test, subtest, exc_info_tuple)
# Now trigger a failure
self.fail("some recognizable failure")
subtest = None
test = Foo('test_1')
result = unittest.TestResult()
test.run(result)
self.assertFalse(result.wasSuccessful())
self.assertEqual(len(result.errors), 1)
self.assertEqual(len(result.failures), 1)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
test_case, formatted_exc = result.errors[0]
self.assertIs(test_case, subtest)
self.assertIn("ZeroDivisionError", formatted_exc)
test_case, formatted_exc = result.failures[0]
self.assertIs(test_case, subtest)
self.assertIn("some recognizable failure", formatted_exc)
def testGetDescriptionWithoutDocstring(self):
result = unittest.TextTestResult(None, True, 1)
self.assertEqual(
result.getDescription(self),
'testGetDescriptionWithoutDocstring (' + __name__ +
'.Test_TestResult)')
def testGetSubTestDescriptionWithoutDocstring(self):
with self.subTest(foo=1, bar=2):
result = unittest.TextTestResult(None, True, 1)
self.assertEqual(
result.getDescription(self._subtest),
'testGetSubTestDescriptionWithoutDocstring (' + __name__ +
'.Test_TestResult) (bar=2, foo=1)')
with self.subTest('some message'):
result = unittest.TextTestResult(None, True, 1)
self.assertEqual(
result.getDescription(self._subtest),
'testGetSubTestDescriptionWithoutDocstring (' + __name__ +
'.Test_TestResult) [some message]')
def testGetSubTestDescriptionWithoutDocstringAndParams(self):
with self.subTest():
result = unittest.TextTestResult(None, True, 1)
self.assertEqual(
result.getDescription(self._subtest),
'testGetSubTestDescriptionWithoutDocstringAndParams '
'(' + __name__ + '.Test_TestResult) (<subtest>)')
def testGetSubTestDescriptionForFalsyValues(self):
expected = 'testGetSubTestDescriptionForFalsyValues (%s.Test_TestResult) [%s]'
result = unittest.TextTestResult(None, True, 1)
for arg in [0, None, []]:
with self.subTest(arg):
self.assertEqual(
result.getDescription(self._subtest),
expected % (__name__, arg)
)
def testGetNestedSubTestDescriptionWithoutDocstring(self):
with self.subTest(foo=1):
with self.subTest(bar=2):
result = unittest.TextTestResult(None, True, 1)
self.assertEqual(
result.getDescription(self._subtest),
'testGetNestedSubTestDescriptionWithoutDocstring '
'(' + __name__ + '.Test_TestResult) (bar=2, foo=1)')
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
def testGetDescriptionWithOneLineDocstring(self):
"""Tests getDescription() for a method with a docstring."""
result = unittest.TextTestResult(None, True, 1)
self.assertEqual(
result.getDescription(self),
('testGetDescriptionWithOneLineDocstring '
'(' + __name__ + '.Test_TestResult)\n'
'Tests getDescription() for a method with a docstring.'))
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
def testGetSubTestDescriptionWithOneLineDocstring(self):
"""Tests getDescription() for a method with a docstring."""
result = unittest.TextTestResult(None, True, 1)
with self.subTest(foo=1, bar=2):
self.assertEqual(
result.getDescription(self._subtest),
('testGetSubTestDescriptionWithOneLineDocstring '
'(' + __name__ + '.Test_TestResult) (bar=2, foo=1)\n'
'Tests getDescription() for a method with a docstring.'))
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
def testGetDescriptionWithMultiLineDocstring(self):
"""Tests getDescription() for a method with a longer docstring.
The second line of the docstring.
"""
result = unittest.TextTestResult(None, True, 1)
self.assertEqual(
result.getDescription(self),
('testGetDescriptionWithMultiLineDocstring '
'(' + __name__ + '.Test_TestResult)\n'
'Tests getDescription() for a method with a longer '
'docstring.'))
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
def testGetSubTestDescriptionWithMultiLineDocstring(self):
"""Tests getDescription() for a method with a longer docstring.
The second line of the docstring.
"""
result = unittest.TextTestResult(None, True, 1)
with self.subTest(foo=1, bar=2):
self.assertEqual(
result.getDescription(self._subtest),
('testGetSubTestDescriptionWithMultiLineDocstring '
'(' + __name__ + '.Test_TestResult) (bar=2, foo=1)\n'
'Tests getDescription() for a method with a longer '
'docstring.'))
def testStackFrameTrimming(self):
class Frame(object):
class tb_frame(object):
f_globals = {}
result = unittest.TestResult()
self.assertFalse(result._is_relevant_tb_level(Frame))
Frame.tb_frame.f_globals['__unittest'] = True
self.assertTrue(result._is_relevant_tb_level(Frame))
def testFailFast(self):
result = unittest.TestResult()
result._exc_info_to_string = lambda *_: ''
result.failfast = True
result.addError(None, None)
self.assertTrue(result.shouldStop)
result = unittest.TestResult()
result._exc_info_to_string = lambda *_: ''
result.failfast = True
result.addFailure(None, None)
self.assertTrue(result.shouldStop)
result = unittest.TestResult()
result._exc_info_to_string = lambda *_: ''
result.failfast = True
result.addUnexpectedSuccess(None)
self.assertTrue(result.shouldStop)
def testFailFastSetByRunner(self):
runner = unittest.TextTestRunner(stream=io.StringIO(), failfast=True)
def test(result):
self.assertTrue(result.failfast)
result = runner.run(test)
classDict = dict(unittest.TestResult.__dict__)
for m in ('addSkip', 'addExpectedFailure', 'addUnexpectedSuccess',
'__init__'):
del classDict[m]
def __init__(self, stream=None, descriptions=None, verbosity=None):
self.failures = []
self.errors = []
self.testsRun = 0
self.shouldStop = False
self.buffer = False
self.tb_locals = False
classDict['__init__'] = __init__
OldResult = type('OldResult', (object,), classDict)
class Test_OldTestResult(unittest.TestCase):
def assertOldResultWarning(self, test, failures):
with support.check_warnings(("TestResult has no add.+ method,",
RuntimeWarning)):
result = OldResult()
test.run(result)
self.assertEqual(len(result.failures), failures)
def testOldTestResult(self):
class Test(unittest.TestCase):
def testSkip(self):
self.skipTest('foobar')
@unittest.expectedFailure
def testExpectedFail(self):
raise TypeError
@unittest.expectedFailure
def testUnexpectedSuccess(self):
pass
for test_name, should_pass in (('testSkip', True),
('testExpectedFail', True),
('testUnexpectedSuccess', False)):
test = Test(test_name)
self.assertOldResultWarning(test, int(not should_pass))
def testOldTestTesultSetup(self):
class Test(unittest.TestCase):
def setUp(self):
self.skipTest('no reason')
def testFoo(self):
pass
self.assertOldResultWarning(Test('testFoo'), 0)
def testOldTestResultClass(self):
@unittest.skip('no reason')
class Test(unittest.TestCase):
def testFoo(self):
pass
self.assertOldResultWarning(Test('testFoo'), 0)
def testOldResultWithRunner(self):
class Test(unittest.TestCase):
def testFoo(self):
pass
runner = unittest.TextTestRunner(resultclass=OldResult,
stream=io.StringIO())
# This will raise an exception if TextTestRunner can't handle old
# test result objects
runner.run(Test('testFoo'))
class TestOutputBuffering(unittest.TestCase):
def setUp(self):
self._real_out = sys.stdout
self._real_err = sys.stderr
def tearDown(self):
sys.stdout = self._real_out
sys.stderr = self._real_err
def testBufferOutputOff(self):
real_out = self._real_out
real_err = self._real_err
result = unittest.TestResult()
self.assertFalse(result.buffer)
self.assertIs(real_out, sys.stdout)
self.assertIs(real_err, sys.stderr)
result.startTest(self)
self.assertIs(real_out, sys.stdout)
self.assertIs(real_err, sys.stderr)
def testBufferOutputStartTestAddSuccess(self):
real_out = self._real_out
real_err = self._real_err
result = unittest.TestResult()
self.assertFalse(result.buffer)
result.buffer = True
self.assertIs(real_out, sys.stdout)
self.assertIs(real_err, sys.stderr)
result.startTest(self)
self.assertIsNot(real_out, sys.stdout)
self.assertIsNot(real_err, sys.stderr)
self.assertIsInstance(sys.stdout, io.StringIO)
self.assertIsInstance(sys.stderr, io.StringIO)
self.assertIsNot(sys.stdout, sys.stderr)
out_stream = sys.stdout
err_stream = sys.stderr
result._original_stdout = io.StringIO()
result._original_stderr = io.StringIO()
print('foo')
print('bar', file=sys.stderr)
self.assertEqual(out_stream.getvalue(), 'foo\n')
self.assertEqual(err_stream.getvalue(), 'bar\n')
self.assertEqual(result._original_stdout.getvalue(), '')
self.assertEqual(result._original_stderr.getvalue(), '')
result.addSuccess(self)
result.stopTest(self)
self.assertIs(sys.stdout, result._original_stdout)
self.assertIs(sys.stderr, result._original_stderr)
self.assertEqual(result._original_stdout.getvalue(), '')
self.assertEqual(result._original_stderr.getvalue(), '')
self.assertEqual(out_stream.getvalue(), '')
self.assertEqual(err_stream.getvalue(), '')
def getStartedResult(self):
result = unittest.TestResult()
result.buffer = True
result.startTest(self)
return result
def testBufferOutputAddErrorOrFailure(self):
unittest.result.traceback = MockTraceback
self.addCleanup(restore_traceback)
for message_attr, add_attr, include_error in [
('errors', 'addError', True),
('failures', 'addFailure', False),
('errors', 'addError', True),
('failures', 'addFailure', False)
]:
result = self.getStartedResult()
buffered_out = sys.stdout
buffered_err = sys.stderr
result._original_stdout = io.StringIO()
result._original_stderr = io.StringIO()
print('foo', file=sys.stdout)
if include_error:
print('bar', file=sys.stderr)
addFunction = getattr(result, add_attr)
addFunction(self, (None, None, None))
result.stopTest(self)
result_list = getattr(result, message_attr)
self.assertEqual(len(result_list), 1)
test, message = result_list[0]
expectedOutMessage = textwrap.dedent("""
Stdout:
foo
""")
expectedErrMessage = ''
if include_error:
expectedErrMessage = textwrap.dedent("""
Stderr:
bar
""")
expectedFullMessage = 'A traceback%s%s' % (expectedOutMessage, expectedErrMessage)
self.assertIs(test, self)
self.assertEqual(result._original_stdout.getvalue(), expectedOutMessage)
self.assertEqual(result._original_stderr.getvalue(), expectedErrMessage)
self.assertMultiLineEqual(message, expectedFullMessage)
def testBufferSetupClass(self):
result = unittest.TestResult()
result.buffer = True
class Foo(unittest.TestCase):
@classmethod
def setUpClass(cls):
1/0
def test_foo(self):
pass
suite = unittest.TestSuite([Foo('test_foo')])
suite(result)
self.assertEqual(len(result.errors), 1)
def testBufferTearDownClass(self):
result = unittest.TestResult()
result.buffer = True
class Foo(unittest.TestCase):
@classmethod
def tearDownClass(cls):
1/0
def test_foo(self):
pass
suite = unittest.TestSuite([Foo('test_foo')])
suite(result)
self.assertEqual(len(result.errors), 1)
def testBufferSetUpModule(self):
result = unittest.TestResult()
result.buffer = True
class Foo(unittest.TestCase):
def test_foo(self):
pass
class Module(object):
@staticmethod
def setUpModule():
1/0
Foo.__module__ = 'Module'
sys.modules['Module'] = Module
self.addCleanup(sys.modules.pop, 'Module')
suite = unittest.TestSuite([Foo('test_foo')])
suite(result)
self.assertEqual(len(result.errors), 1)
def testBufferTearDownModule(self):
result = unittest.TestResult()
result.buffer = True
class Foo(unittest.TestCase):
def test_foo(self):
pass
class Module(object):
@staticmethod
def tearDownModule():
1/0
Foo.__module__ = 'Module'
sys.modules['Module'] = Module
self.addCleanup(sys.modules.pop, 'Module')
suite = unittest.TestSuite([Foo('test_foo')])
suite(result)
self.assertEqual(len(result.errors), 1)
if __name__ == '__main__':
unittest.main()
| 24,497 | 696 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/test_runner.py | import io
import os
import sys
import pickle
import subprocess
import unittest
from unittest.case import _Outcome
from unittest.test.support import (LoggingResult,
ResultWithNoStartTestRunStopTestRun)
class TestCleanUp(unittest.TestCase):
def testCleanUp(self):
class TestableTest(unittest.TestCase):
def testNothing(self):
pass
test = TestableTest('testNothing')
self.assertEqual(test._cleanups, [])
cleanups = []
def cleanup1(*args, **kwargs):
cleanups.append((1, args, kwargs))
def cleanup2(*args, **kwargs):
cleanups.append((2, args, kwargs))
test.addCleanup(cleanup1, 1, 2, 3, four='hello', five='goodbye')
test.addCleanup(cleanup2)
self.assertEqual(test._cleanups,
[(cleanup1, (1, 2, 3), dict(four='hello', five='goodbye')),
(cleanup2, (), {})])
self.assertTrue(test.doCleanups())
self.assertEqual(cleanups, [(2, (), {}), (1, (1, 2, 3), dict(four='hello', five='goodbye'))])
def testCleanUpWithErrors(self):
class TestableTest(unittest.TestCase):
def testNothing(self):
pass
test = TestableTest('testNothing')
outcome = test._outcome = _Outcome()
exc1 = Exception('foo')
exc2 = Exception('bar')
def cleanup1():
raise exc1
def cleanup2():
raise exc2
test.addCleanup(cleanup1)
test.addCleanup(cleanup2)
self.assertFalse(test.doCleanups())
self.assertFalse(outcome.success)
((_, (Type1, instance1, _)),
(_, (Type2, instance2, _))) = reversed(outcome.errors)
self.assertEqual((Type1, instance1), (Exception, exc1))
self.assertEqual((Type2, instance2), (Exception, exc2))
def testCleanupInRun(self):
blowUp = False
ordering = []
class TestableTest(unittest.TestCase):
def setUp(self):
ordering.append('setUp')
if blowUp:
raise Exception('foo')
def testNothing(self):
ordering.append('test')
def tearDown(self):
ordering.append('tearDown')
test = TestableTest('testNothing')
def cleanup1():
ordering.append('cleanup1')
def cleanup2():
ordering.append('cleanup2')
test.addCleanup(cleanup1)
test.addCleanup(cleanup2)
def success(some_test):
self.assertEqual(some_test, test)
ordering.append('success')
result = unittest.TestResult()
result.addSuccess = success
test.run(result)
self.assertEqual(ordering, ['setUp', 'test', 'tearDown',
'cleanup2', 'cleanup1', 'success'])
blowUp = True
ordering = []
test = TestableTest('testNothing')
test.addCleanup(cleanup1)
test.run(result)
self.assertEqual(ordering, ['setUp', 'cleanup1'])
def testTestCaseDebugExecutesCleanups(self):
ordering = []
class TestableTest(unittest.TestCase):
def setUp(self):
ordering.append('setUp')
self.addCleanup(cleanup1)
def testNothing(self):
ordering.append('test')
def tearDown(self):
ordering.append('tearDown')
test = TestableTest('testNothing')
def cleanup1():
ordering.append('cleanup1')
test.addCleanup(cleanup2)
def cleanup2():
ordering.append('cleanup2')
test.debug()
self.assertEqual(ordering, ['setUp', 'test', 'tearDown', 'cleanup1', 'cleanup2'])
class Test_TextTestRunner(unittest.TestCase):
"""Tests for TextTestRunner."""
def setUp(self):
# clean the environment from pre-existing PYTHONWARNINGS to make
# test_warnings results consistent
self.pythonwarnings = os.environ.get('PYTHONWARNINGS')
if self.pythonwarnings:
del os.environ['PYTHONWARNINGS']
def tearDown(self):
# bring back pre-existing PYTHONWARNINGS if present
if self.pythonwarnings:
os.environ['PYTHONWARNINGS'] = self.pythonwarnings
def test_init(self):
runner = unittest.TextTestRunner()
self.assertFalse(runner.failfast)
self.assertFalse(runner.buffer)
self.assertEqual(runner.verbosity, 1)
self.assertEqual(runner.warnings, None)
self.assertTrue(runner.descriptions)
self.assertEqual(runner.resultclass, unittest.TextTestResult)
self.assertFalse(runner.tb_locals)
def test_multiple_inheritance(self):
class AResult(unittest.TestResult):
def __init__(self, stream, descriptions, verbosity):
super(AResult, self).__init__(stream, descriptions, verbosity)
class ATextResult(unittest.TextTestResult, AResult):
pass
# This used to raise an exception due to TextTestResult not passing
# on arguments in its __init__ super call
ATextResult(None, None, 1)
def testBufferAndFailfast(self):
class Test(unittest.TestCase):
def testFoo(self):
pass
result = unittest.TestResult()
runner = unittest.TextTestRunner(stream=io.StringIO(), failfast=True,
buffer=True)
# Use our result object
runner._makeResult = lambda: result
runner.run(Test('testFoo'))
self.assertTrue(result.failfast)
self.assertTrue(result.buffer)
def test_locals(self):
runner = unittest.TextTestRunner(stream=io.StringIO(), tb_locals=True)
result = runner.run(unittest.TestSuite())
self.assertEqual(True, result.tb_locals)
def testRunnerRegistersResult(self):
class Test(unittest.TestCase):
def testFoo(self):
pass
originalRegisterResult = unittest.runner.registerResult
def cleanup():
unittest.runner.registerResult = originalRegisterResult
self.addCleanup(cleanup)
result = unittest.TestResult()
runner = unittest.TextTestRunner(stream=io.StringIO())
# Use our result object
runner._makeResult = lambda: result
self.wasRegistered = 0
def fakeRegisterResult(thisResult):
self.wasRegistered += 1
self.assertEqual(thisResult, result)
unittest.runner.registerResult = fakeRegisterResult
runner.run(unittest.TestSuite())
self.assertEqual(self.wasRegistered, 1)
def test_works_with_result_without_startTestRun_stopTestRun(self):
class OldTextResult(ResultWithNoStartTestRunStopTestRun):
separator2 = ''
def printErrors(self):
pass
class Runner(unittest.TextTestRunner):
def __init__(self):
super(Runner, self).__init__(io.StringIO())
def _makeResult(self):
return OldTextResult()
runner = Runner()
runner.run(unittest.TestSuite())
def test_startTestRun_stopTestRun_called(self):
class LoggingTextResult(LoggingResult):
separator2 = ''
def printErrors(self):
pass
class LoggingRunner(unittest.TextTestRunner):
def __init__(self, events):
super(LoggingRunner, self).__init__(io.StringIO())
self._events = events
def _makeResult(self):
return LoggingTextResult(self._events)
events = []
runner = LoggingRunner(events)
runner.run(unittest.TestSuite())
expected = ['startTestRun', 'stopTestRun']
self.assertEqual(events, expected)
def test_pickle_unpickle(self):
# Issue #7197: a TextTestRunner should be (un)pickleable. This is
# required by test_multiprocessing under Windows (in verbose mode).
stream = io.StringIO("foo")
runner = unittest.TextTestRunner(stream)
for protocol in range(2, pickle.HIGHEST_PROTOCOL + 1):
s = pickle.dumps(runner, protocol)
obj = pickle.loads(s)
# StringIO objects never compare equal, a cheap test instead.
self.assertEqual(obj.stream.getvalue(), stream.getvalue())
def test_resultclass(self):
def MockResultClass(*args):
return args
STREAM = object()
DESCRIPTIONS = object()
VERBOSITY = object()
runner = unittest.TextTestRunner(STREAM, DESCRIPTIONS, VERBOSITY,
resultclass=MockResultClass)
self.assertEqual(runner.resultclass, MockResultClass)
expectedresult = (runner.stream, DESCRIPTIONS, VERBOSITY)
self.assertEqual(runner._makeResult(), expectedresult)
def test_warnings(self):
"""
Check that warnings argument of TextTestRunner correctly affects the
behavior of the warnings.
"""
# see #10535 and the _test_warnings file for more information
def get_parse_out_err(p):
return [b.splitlines() for b in p.communicate()]
opts = dict(stdout=subprocess.PIPE, stderr=subprocess.PIPE,
cwd=os.path.dirname(__file__))
ae_msg = b'Please use assertEqual instead.'
at_msg = b'Please use assertTrue instead.'
# no args -> all the warnings are printed, unittest warnings only once
p = subprocess.Popen([sys.executable, '_test_warnings.py'], **opts)
with p:
out, err = get_parse_out_err(p)
self.assertIn(b'OK', err)
# check that the total number of warnings in the output is correct
self.assertEqual(len(out), 12)
# check that the numbers of the different kind of warnings is correct
for msg in [b'dw', b'iw', b'uw']:
self.assertEqual(out.count(msg), 3)
for msg in [ae_msg, at_msg, b'rw']:
self.assertEqual(out.count(msg), 1)
args_list = (
# passing 'ignore' as warnings arg -> no warnings
[sys.executable, '_test_warnings.py', 'ignore'],
# -W doesn't affect the result if the arg is passed
[sys.executable, '-Wa', '_test_warnings.py', 'ignore'],
# -W affects the result if the arg is not passed
[sys.executable, '-Wi', '_test_warnings.py']
)
# in all these cases no warnings are printed
for args in args_list:
p = subprocess.Popen(args, **opts)
with p:
out, err = get_parse_out_err(p)
self.assertIn(b'OK', err)
self.assertEqual(len(out), 0)
# passing 'always' as warnings arg -> all the warnings printed,
# unittest warnings only once
p = subprocess.Popen([sys.executable, '_test_warnings.py', 'always'],
**opts)
with p:
out, err = get_parse_out_err(p)
self.assertIn(b'OK', err)
self.assertEqual(len(out), 14)
for msg in [b'dw', b'iw', b'uw', b'rw']:
self.assertEqual(out.count(msg), 3)
for msg in [ae_msg, at_msg]:
self.assertEqual(out.count(msg), 1)
def testStdErrLookedUpAtInstantiationTime(self):
# see issue 10786
old_stderr = sys.stderr
f = io.StringIO()
sys.stderr = f
try:
runner = unittest.TextTestRunner()
self.assertTrue(runner.stream.stream is f)
finally:
sys.stderr = old_stderr
def testSpecifiedStreamUsed(self):
# see issue 10786
f = io.StringIO()
runner = unittest.TextTestRunner(f)
self.assertTrue(runner.stream.stream is f)
if __name__ == "__main__":
unittest.main()
| 12,013 | 354 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/test_discovery.py | import os.path
from os.path import abspath
import re
import sys
import types
import pickle
from test import support
import test.test_importlib.util
import unittest
import unittest.mock
import unittest.test
class TestableTestProgram(unittest.TestProgram):
module = None
exit = True
defaultTest = failfast = catchbreak = buffer = None
verbosity = 1
progName = ''
testRunner = testLoader = None
def __init__(self):
pass
class TestDiscovery(unittest.TestCase):
# Heavily mocked tests so I can avoid hitting the filesystem
def test_get_name_from_path(self):
loader = unittest.TestLoader()
loader._top_level_dir = '/foo'
name = loader._get_name_from_path('/foo/bar/baz.py')
self.assertEqual(name, 'bar.baz')
if not __debug__:
# asserts are off
return
with self.assertRaises(AssertionError):
loader._get_name_from_path('/bar/baz.py')
def test_find_tests(self):
loader = unittest.TestLoader()
original_listdir = os.listdir
def restore_listdir():
os.listdir = original_listdir
original_isfile = os.path.isfile
def restore_isfile():
os.path.isfile = original_isfile
original_isdir = os.path.isdir
def restore_isdir():
os.path.isdir = original_isdir
path_lists = [['test2.py', 'test1.py', 'not_a_test.py', 'test_dir',
'test.foo', 'test-not-a-module.py', 'another_dir'],
['test4.py', 'test3.py', ]]
os.listdir = lambda path: path_lists.pop(0)
self.addCleanup(restore_listdir)
def isdir(path):
return path.endswith('dir')
os.path.isdir = isdir
self.addCleanup(restore_isdir)
def isfile(path):
# another_dir is not a package and so shouldn't be recursed into
return not path.endswith('dir') and not 'another_dir' in path
os.path.isfile = isfile
self.addCleanup(restore_isfile)
loader._get_module_from_name = lambda path: path + ' module'
orig_load_tests = loader.loadTestsFromModule
def loadTestsFromModule(module, pattern=None):
# This is where load_tests is called.
base = orig_load_tests(module, pattern=pattern)
return base + [module + ' tests']
loader.loadTestsFromModule = loadTestsFromModule
loader.suiteClass = lambda thing: thing
top_level = os.path.abspath('/foo')
loader._top_level_dir = top_level
suite = list(loader._find_tests(top_level, 'test*.py'))
# The test suites found should be sorted alphabetically for reliable
# execution order.
expected = [[name + ' module tests'] for name in
('test1', 'test2', 'test_dir')]
expected.extend([[('test_dir.%s' % name) + ' module tests'] for name in
('test3', 'test4')])
self.assertEqual(suite, expected)
def test_find_tests_socket(self):
# A socket is neither a directory nor a regular file.
# https://bugs.python.org/issue25320
loader = unittest.TestLoader()
original_listdir = os.listdir
def restore_listdir():
os.listdir = original_listdir
original_isfile = os.path.isfile
def restore_isfile():
os.path.isfile = original_isfile
original_isdir = os.path.isdir
def restore_isdir():
os.path.isdir = original_isdir
path_lists = [['socket']]
os.listdir = lambda path: path_lists.pop(0)
self.addCleanup(restore_listdir)
os.path.isdir = lambda path: False
self.addCleanup(restore_isdir)
os.path.isfile = lambda path: False
self.addCleanup(restore_isfile)
loader._get_module_from_name = lambda path: path + ' module'
orig_load_tests = loader.loadTestsFromModule
def loadTestsFromModule(module, pattern=None):
# This is where load_tests is called.
base = orig_load_tests(module, pattern=pattern)
return base + [module + ' tests']
loader.loadTestsFromModule = loadTestsFromModule
loader.suiteClass = lambda thing: thing
top_level = os.path.abspath('/foo')
loader._top_level_dir = top_level
suite = list(loader._find_tests(top_level, 'test*.py'))
self.assertEqual(suite, [])
def test_find_tests_with_package(self):
loader = unittest.TestLoader()
original_listdir = os.listdir
def restore_listdir():
os.listdir = original_listdir
original_isfile = os.path.isfile
def restore_isfile():
os.path.isfile = original_isfile
original_isdir = os.path.isdir
def restore_isdir():
os.path.isdir = original_isdir
directories = ['a_directory', 'test_directory', 'test_directory2']
path_lists = [directories, [], [], []]
os.listdir = lambda path: path_lists.pop(0)
self.addCleanup(restore_listdir)
os.path.isdir = lambda path: True
self.addCleanup(restore_isdir)
os.path.isfile = lambda path: os.path.basename(path) not in directories
self.addCleanup(restore_isfile)
class Module(object):
paths = []
load_tests_args = []
def __init__(self, path):
self.path = path
self.paths.append(path)
if os.path.basename(path) == 'test_directory':
def load_tests(loader, tests, pattern):
self.load_tests_args.append((loader, tests, pattern))
return [self.path + ' load_tests']
self.load_tests = load_tests
def __eq__(self, other):
return self.path == other.path
loader._get_module_from_name = lambda name: Module(name)
orig_load_tests = loader.loadTestsFromModule
def loadTestsFromModule(module, pattern=None):
# This is where load_tests is called.
base = orig_load_tests(module, pattern=pattern)
return base + [module.path + ' module tests']
loader.loadTestsFromModule = loadTestsFromModule
loader.suiteClass = lambda thing: thing
loader._top_level_dir = '/foo'
# this time no '.py' on the pattern so that it can match
# a test package
suite = list(loader._find_tests('/foo', 'test*'))
# We should have loaded tests from the a_directory and test_directory2
# directly and via load_tests for the test_directory package, which
# still calls the baseline module loader.
self.assertEqual(suite,
[['a_directory module tests'],
['test_directory load_tests',
'test_directory module tests'],
['test_directory2 module tests']])
# The test module paths should be sorted for reliable execution order
self.assertEqual(Module.paths,
['a_directory', 'test_directory', 'test_directory2'])
# load_tests should have been called once with loader, tests and pattern
# (but there are no tests in our stub module itself, so that is [] at
# the time of call).
self.assertEqual(Module.load_tests_args,
[(loader, [], 'test*')])
def test_find_tests_default_calls_package_load_tests(self):
loader = unittest.TestLoader()
original_listdir = os.listdir
def restore_listdir():
os.listdir = original_listdir
original_isfile = os.path.isfile
def restore_isfile():
os.path.isfile = original_isfile
original_isdir = os.path.isdir
def restore_isdir():
os.path.isdir = original_isdir
directories = ['a_directory', 'test_directory', 'test_directory2']
path_lists = [directories, [], [], []]
os.listdir = lambda path: path_lists.pop(0)
self.addCleanup(restore_listdir)
os.path.isdir = lambda path: True
self.addCleanup(restore_isdir)
os.path.isfile = lambda path: os.path.basename(path) not in directories
self.addCleanup(restore_isfile)
class Module(object):
paths = []
load_tests_args = []
def __init__(self, path):
self.path = path
self.paths.append(path)
if os.path.basename(path) == 'test_directory':
def load_tests(loader, tests, pattern):
self.load_tests_args.append((loader, tests, pattern))
return [self.path + ' load_tests']
self.load_tests = load_tests
def __eq__(self, other):
return self.path == other.path
loader._get_module_from_name = lambda name: Module(name)
orig_load_tests = loader.loadTestsFromModule
def loadTestsFromModule(module, pattern=None):
# This is where load_tests is called.
base = orig_load_tests(module, pattern=pattern)
return base + [module.path + ' module tests']
loader.loadTestsFromModule = loadTestsFromModule
loader.suiteClass = lambda thing: thing
loader._top_level_dir = '/foo'
# this time no '.py' on the pattern so that it can match
# a test package
suite = list(loader._find_tests('/foo', 'test*.py'))
# We should have loaded tests from the a_directory and test_directory2
# directly and via load_tests for the test_directory package, which
# still calls the baseline module loader.
self.assertEqual(suite,
[['a_directory module tests'],
['test_directory load_tests',
'test_directory module tests'],
['test_directory2 module tests']])
# The test module paths should be sorted for reliable execution order
self.assertEqual(Module.paths,
['a_directory', 'test_directory', 'test_directory2'])
# load_tests should have been called once with loader, tests and pattern
self.assertEqual(Module.load_tests_args,
[(loader, [], 'test*.py')])
def test_find_tests_customize_via_package_pattern(self):
# This test uses the example 'do-nothing' load_tests from
# https://docs.python.org/3/library/unittest.html#load-tests-protocol
# to make sure that that actually works.
# Housekeeping
original_listdir = os.listdir
def restore_listdir():
os.listdir = original_listdir
self.addCleanup(restore_listdir)
original_isfile = os.path.isfile
def restore_isfile():
os.path.isfile = original_isfile
self.addCleanup(restore_isfile)
original_isdir = os.path.isdir
def restore_isdir():
os.path.isdir = original_isdir
self.addCleanup(restore_isdir)
self.addCleanup(sys.path.remove, abspath('/foo'))
# Test data: we expect the following:
# a listdir to find our package, and isfile and isdir checks on it.
# a module-from-name call to turn that into a module
# followed by load_tests.
# then our load_tests will call discover() which is messy
# but that finally chains into find_tests again for the child dir -
# which is why we don't have an infinite loop.
# We expect to see:
# the module load tests for both package and plain module called,
# and the plain module result nested by the package module load_tests
# indicating that it was processed and could have been mutated.
vfs = {abspath('/foo'): ['my_package'],
abspath('/foo/my_package'): ['__init__.py', 'test_module.py']}
def list_dir(path):
return list(vfs[path])
os.listdir = list_dir
os.path.isdir = lambda path: not path.endswith('.py')
os.path.isfile = lambda path: path.endswith('.py')
class Module(object):
paths = []
load_tests_args = []
def __init__(self, path):
self.path = path
self.paths.append(path)
if path.endswith('test_module'):
def load_tests(loader, tests, pattern):
self.load_tests_args.append((loader, tests, pattern))
return [self.path + ' load_tests']
else:
def load_tests(loader, tests, pattern):
self.load_tests_args.append((loader, tests, pattern))
# top level directory cached on loader instance
__file__ = '/foo/my_package/__init__.py'
this_dir = os.path.dirname(__file__)
pkg_tests = loader.discover(
start_dir=this_dir, pattern=pattern)
return [self.path + ' load_tests', tests
] + pkg_tests
self.load_tests = load_tests
def __eq__(self, other):
return self.path == other.path
loader = unittest.TestLoader()
loader._get_module_from_name = lambda name: Module(name)
loader.suiteClass = lambda thing: thing
loader._top_level_dir = abspath('/foo')
# this time no '.py' on the pattern so that it can match
# a test package
suite = list(loader._find_tests(abspath('/foo'), 'test*.py'))
# We should have loaded tests from both my_package and
# my_package.test_module, and also run the load_tests hook in both.
# (normally this would be nested TestSuites.)
self.assertEqual(suite,
[['my_package load_tests', [],
['my_package.test_module load_tests']]])
# Parents before children.
self.assertEqual(Module.paths,
['my_package', 'my_package.test_module'])
# load_tests should have been called twice with loader, tests and pattern
self.assertEqual(Module.load_tests_args,
[(loader, [], 'test*.py'),
(loader, [], 'test*.py')])
def test_discover(self):
loader = unittest.TestLoader()
original_isfile = os.path.isfile
original_isdir = os.path.isdir
def restore_isfile():
os.path.isfile = original_isfile
os.path.isfile = lambda path: False
self.addCleanup(restore_isfile)
orig_sys_path = sys.path[:]
def restore_path():
sys.path[:] = orig_sys_path
self.addCleanup(restore_path)
full_path = os.path.abspath(os.path.normpath('/foo'))
with self.assertRaises(ImportError):
loader.discover('/foo/bar', top_level_dir='/foo')
self.assertEqual(loader._top_level_dir, full_path)
self.assertIn(full_path, sys.path)
os.path.isfile = lambda path: True
os.path.isdir = lambda path: True
def restore_isdir():
os.path.isdir = original_isdir
self.addCleanup(restore_isdir)
_find_tests_args = []
def _find_tests(start_dir, pattern, namespace=None):
_find_tests_args.append((start_dir, pattern))
return ['tests']
loader._find_tests = _find_tests
loader.suiteClass = str
suite = loader.discover('/foo/bar/baz', 'pattern', '/foo/bar')
top_level_dir = os.path.abspath('/foo/bar')
start_dir = os.path.abspath('/foo/bar/baz')
self.assertEqual(suite, "['tests']")
self.assertEqual(loader._top_level_dir, top_level_dir)
self.assertEqual(_find_tests_args, [(start_dir, 'pattern')])
self.assertIn(top_level_dir, sys.path)
def test_discover_start_dir_is_package_calls_package_load_tests(self):
# This test verifies that the package load_tests in a package is indeed
# invoked when the start_dir is a package (and not the top level).
# http://bugs.python.org/issue22457
# Test data: we expect the following:
# an isfile to verify the package, then importing and scanning
# as per _find_tests' normal behaviour.
# We expect to see our load_tests hook called once.
vfs = {abspath('/toplevel'): ['startdir'],
abspath('/toplevel/startdir'): ['__init__.py']}
def list_dir(path):
return list(vfs[path])
self.addCleanup(setattr, os, 'listdir', os.listdir)
os.listdir = list_dir
self.addCleanup(setattr, os.path, 'isfile', os.path.isfile)
os.path.isfile = lambda path: path.endswith('.py')
self.addCleanup(setattr, os.path, 'isdir', os.path.isdir)
os.path.isdir = lambda path: not path.endswith('.py')
self.addCleanup(sys.path.remove, abspath('/toplevel'))
class Module(object):
paths = []
load_tests_args = []
def __init__(self, path):
self.path = path
def load_tests(self, loader, tests, pattern):
return ['load_tests called ' + self.path]
def __eq__(self, other):
return self.path == other.path
loader = unittest.TestLoader()
loader._get_module_from_name = lambda name: Module(name)
loader.suiteClass = lambda thing: thing
suite = loader.discover('/toplevel/startdir', top_level_dir='/toplevel')
# We should have loaded tests from the package __init__.
# (normally this would be nested TestSuites.)
self.assertEqual(suite,
[['load_tests called startdir']])
def setup_import_issue_tests(self, fakefile):
listdir = os.listdir
os.listdir = lambda _: [fakefile]
isfile = os.path.isfile
os.path.isfile = lambda _: True
orig_sys_path = sys.path[:]
def restore():
os.path.isfile = isfile
os.listdir = listdir
sys.path[:] = orig_sys_path
self.addCleanup(restore)
def setup_import_issue_package_tests(self, vfs):
self.addCleanup(setattr, os, 'listdir', os.listdir)
self.addCleanup(setattr, os.path, 'isfile', os.path.isfile)
self.addCleanup(setattr, os.path, 'isdir', os.path.isdir)
self.addCleanup(sys.path.__setitem__, slice(None), list(sys.path))
def list_dir(path):
return list(vfs[path])
os.listdir = list_dir
os.path.isdir = lambda path: not path.endswith('.py')
os.path.isfile = lambda path: path.endswith('.py')
def test_discover_with_modules_that_fail_to_import(self):
loader = unittest.TestLoader()
self.setup_import_issue_tests('test_this_does_not_exist.py')
suite = loader.discover('.')
self.assertIn(os.getcwd(), sys.path)
self.assertEqual(suite.countTestCases(), 1)
# Errors loading the suite are also captured for introspection.
self.assertNotEqual([], loader.errors)
self.assertEqual(1, len(loader.errors))
error = loader.errors[0]
self.assertTrue(
'Failed to import test module: test_this_does_not_exist' in error,
'missing error string in %r' % error)
test = list(list(suite)[0])[0] # extract test from suite
with self.assertRaises(ImportError):
test.test_this_does_not_exist()
def test_discover_with_init_modules_that_fail_to_import(self):
vfs = {abspath('/foo'): ['my_package'],
abspath('/foo/my_package'): ['__init__.py', 'test_module.py']}
self.setup_import_issue_package_tests(vfs)
import_calls = []
def _get_module_from_name(name):
import_calls.append(name)
raise ImportError("Cannot import Name")
loader = unittest.TestLoader()
loader._get_module_from_name = _get_module_from_name
suite = loader.discover(abspath('/foo'))
self.assertIn(abspath('/foo'), sys.path)
self.assertEqual(suite.countTestCases(), 1)
# Errors loading the suite are also captured for introspection.
self.assertNotEqual([], loader.errors)
self.assertEqual(1, len(loader.errors))
error = loader.errors[0]
self.assertTrue(
'Failed to import test module: my_package' in error,
'missing error string in %r' % error)
test = list(list(suite)[0])[0] # extract test from suite
with self.assertRaises(ImportError):
test.my_package()
self.assertEqual(import_calls, ['my_package'])
# Check picklability
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
pickle.loads(pickle.dumps(test, proto))
def test_discover_with_module_that_raises_SkipTest_on_import(self):
if not unittest.BaseTestSuite._cleanup:
raise unittest.SkipTest("Suite cleanup is disabled")
loader = unittest.TestLoader()
def _get_module_from_name(name):
raise unittest.SkipTest('skipperoo')
loader._get_module_from_name = _get_module_from_name
self.setup_import_issue_tests('test_skip_dummy.py')
suite = loader.discover('.')
self.assertEqual(suite.countTestCases(), 1)
result = unittest.TestResult()
suite.run(result)
self.assertEqual(len(result.skipped), 1)
# Check picklability
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
pickle.loads(pickle.dumps(suite, proto))
def test_discover_with_init_module_that_raises_SkipTest_on_import(self):
if not unittest.BaseTestSuite._cleanup:
raise unittest.SkipTest("Suite cleanup is disabled")
vfs = {abspath('/foo'): ['my_package'],
abspath('/foo/my_package'): ['__init__.py', 'test_module.py']}
self.setup_import_issue_package_tests(vfs)
import_calls = []
def _get_module_from_name(name):
import_calls.append(name)
raise unittest.SkipTest('skipperoo')
loader = unittest.TestLoader()
loader._get_module_from_name = _get_module_from_name
suite = loader.discover(abspath('/foo'))
self.assertIn(abspath('/foo'), sys.path)
self.assertEqual(suite.countTestCases(), 1)
result = unittest.TestResult()
suite.run(result)
self.assertEqual(len(result.skipped), 1)
self.assertEqual(result.testsRun, 1)
self.assertEqual(import_calls, ['my_package'])
# Check picklability
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
pickle.loads(pickle.dumps(suite, proto))
def test_command_line_handling_parseArgs(self):
program = TestableTestProgram()
args = []
program._do_discovery = args.append
program.parseArgs(['something', 'discover'])
self.assertEqual(args, [[]])
args[:] = []
program.parseArgs(['something', 'discover', 'foo', 'bar'])
self.assertEqual(args, [['foo', 'bar']])
def test_command_line_handling_discover_by_default(self):
program = TestableTestProgram()
args = []
program._do_discovery = args.append
program.parseArgs(['something'])
self.assertEqual(args, [[]])
self.assertEqual(program.verbosity, 1)
self.assertIs(program.buffer, False)
self.assertIs(program.catchbreak, False)
self.assertIs(program.failfast, False)
def test_command_line_handling_discover_by_default_with_options(self):
program = TestableTestProgram()
args = []
program._do_discovery = args.append
program.parseArgs(['something', '-v', '-b', '-v', '-c', '-f'])
self.assertEqual(args, [[]])
self.assertEqual(program.verbosity, 2)
self.assertIs(program.buffer, True)
self.assertIs(program.catchbreak, True)
self.assertIs(program.failfast, True)
def test_command_line_handling_do_discovery_too_many_arguments(self):
program = TestableTestProgram()
program.testLoader = None
with support.captured_stderr() as stderr, \
self.assertRaises(SystemExit) as cm:
# too many args
program._do_discovery(['one', 'two', 'three', 'four'])
self.assertEqual(cm.exception.args, (2,))
self.assertIn('usage:', stderr.getvalue())
def test_command_line_handling_do_discovery_uses_default_loader(self):
program = object.__new__(unittest.TestProgram)
program._initArgParsers()
class Loader(object):
args = []
def discover(self, start_dir, pattern, top_level_dir):
self.args.append((start_dir, pattern, top_level_dir))
return 'tests'
program.testLoader = Loader()
program._do_discovery(['-v'])
self.assertEqual(Loader.args, [('.', 'test*.py', None)])
def test_command_line_handling_do_discovery_calls_loader(self):
program = TestableTestProgram()
class Loader(object):
args = []
def discover(self, start_dir, pattern, top_level_dir):
self.args.append((start_dir, pattern, top_level_dir))
return 'tests'
program._do_discovery(['-v'], Loader=Loader)
self.assertEqual(program.verbosity, 2)
self.assertEqual(program.test, 'tests')
self.assertEqual(Loader.args, [('.', 'test*.py', None)])
Loader.args = []
program = TestableTestProgram()
program._do_discovery(['--verbose'], Loader=Loader)
self.assertEqual(program.test, 'tests')
self.assertEqual(Loader.args, [('.', 'test*.py', None)])
Loader.args = []
program = TestableTestProgram()
program._do_discovery([], Loader=Loader)
self.assertEqual(program.test, 'tests')
self.assertEqual(Loader.args, [('.', 'test*.py', None)])
Loader.args = []
program = TestableTestProgram()
program._do_discovery(['fish'], Loader=Loader)
self.assertEqual(program.test, 'tests')
self.assertEqual(Loader.args, [('fish', 'test*.py', None)])
Loader.args = []
program = TestableTestProgram()
program._do_discovery(['fish', 'eggs'], Loader=Loader)
self.assertEqual(program.test, 'tests')
self.assertEqual(Loader.args, [('fish', 'eggs', None)])
Loader.args = []
program = TestableTestProgram()
program._do_discovery(['fish', 'eggs', 'ham'], Loader=Loader)
self.assertEqual(program.test, 'tests')
self.assertEqual(Loader.args, [('fish', 'eggs', 'ham')])
Loader.args = []
program = TestableTestProgram()
program._do_discovery(['-s', 'fish'], Loader=Loader)
self.assertEqual(program.test, 'tests')
self.assertEqual(Loader.args, [('fish', 'test*.py', None)])
Loader.args = []
program = TestableTestProgram()
program._do_discovery(['-t', 'fish'], Loader=Loader)
self.assertEqual(program.test, 'tests')
self.assertEqual(Loader.args, [('.', 'test*.py', 'fish')])
Loader.args = []
program = TestableTestProgram()
program._do_discovery(['-p', 'fish'], Loader=Loader)
self.assertEqual(program.test, 'tests')
self.assertEqual(Loader.args, [('.', 'fish', None)])
self.assertFalse(program.failfast)
self.assertFalse(program.catchbreak)
Loader.args = []
program = TestableTestProgram()
program._do_discovery(['-p', 'eggs', '-s', 'fish', '-v', '-f', '-c'],
Loader=Loader)
self.assertEqual(program.test, 'tests')
self.assertEqual(Loader.args, [('fish', 'eggs', None)])
self.assertEqual(program.verbosity, 2)
self.assertTrue(program.failfast)
self.assertTrue(program.catchbreak)
def setup_module_clash(self):
class Module(object):
__file__ = 'bar/foo.py'
sys.modules['foo'] = Module
full_path = os.path.abspath('foo')
original_listdir = os.listdir
original_isfile = os.path.isfile
original_isdir = os.path.isdir
def cleanup():
os.listdir = original_listdir
os.path.isfile = original_isfile
os.path.isdir = original_isdir
del sys.modules['foo']
if full_path in sys.path:
sys.path.remove(full_path)
self.addCleanup(cleanup)
def listdir(_):
return ['foo.py']
def isfile(_):
return True
def isdir(_):
return True
os.listdir = listdir
os.path.isfile = isfile
os.path.isdir = isdir
return full_path
def test_detect_module_clash(self):
full_path = self.setup_module_clash()
loader = unittest.TestLoader()
mod_dir = os.path.abspath('bar')
expected_dir = os.path.abspath('foo')
msg = re.escape(r"'foo' module incorrectly imported from %r. Expected %r. "
"Is this module globally installed?" % (mod_dir, expected_dir))
self.assertRaisesRegex(
ImportError, '^%s$' % msg, loader.discover,
start_dir='foo', pattern='foo.py'
)
self.assertEqual(sys.path[0], full_path)
def test_module_symlink_ok(self):
full_path = self.setup_module_clash()
original_realpath = os.path.realpath
mod_dir = os.path.abspath('bar')
expected_dir = os.path.abspath('foo')
def cleanup():
os.path.realpath = original_realpath
self.addCleanup(cleanup)
def realpath(path):
if path == os.path.join(mod_dir, 'foo.py'):
return os.path.join(expected_dir, 'foo.py')
return path
os.path.realpath = realpath
loader = unittest.TestLoader()
loader.discover(start_dir='foo', pattern='foo.py')
def test_discovery_from_dotted_path(self):
loader = unittest.TestLoader()
tests = [self]
expectedPath = os.path.abspath(os.path.dirname(unittest.test.__file__))
self.wasRun = False
def _find_tests(start_dir, pattern, namespace=None):
self.wasRun = True
self.assertEqual(start_dir, expectedPath)
return tests
loader._find_tests = _find_tests
suite = loader.discover('unittest.test')
self.assertTrue(self.wasRun)
self.assertEqual(suite._tests, tests)
def test_discovery_from_dotted_path_builtin_modules(self):
loader = unittest.TestLoader()
listdir = os.listdir
os.listdir = lambda _: ['test_this_does_not_exist.py']
isfile = os.path.isfile
isdir = os.path.isdir
os.path.isdir = lambda _: False
orig_sys_path = sys.path[:]
def restore():
os.path.isfile = isfile
os.path.isdir = isdir
os.listdir = listdir
sys.path[:] = orig_sys_path
self.addCleanup(restore)
with self.assertRaises(TypeError) as cm:
loader.discover('sys')
self.assertEqual(str(cm.exception),
'Can not use builtin modules '
'as dotted module names')
def test_discovery_from_dotted_namespace_packages(self):
loader = unittest.TestLoader()
package = types.ModuleType('package')
package.__path__ = ['/a', '/b']
package.__spec__ = types.SimpleNamespace(
loader=None,
submodule_search_locations=['/a', '/b']
)
def _import(packagename, *args, **kwargs):
sys.modules[packagename] = package
return package
_find_tests_args = []
def _find_tests(start_dir, pattern, namespace=None):
_find_tests_args.append((start_dir, pattern))
return ['%s/tests' % start_dir]
loader._find_tests = _find_tests
loader.suiteClass = list
with unittest.mock.patch('builtins.__import__', _import):
# Since loader.discover() can modify sys.path, restore it when done.
with support.DirsOnSysPath():
# Make sure to remove 'package' from sys.modules when done.
with test.test_importlib.util.uncache('package'):
suite = loader.discover('package')
self.assertEqual(suite, ['/a/tests', '/b/tests'])
def test_discovery_failed_discovery(self):
loader = unittest.TestLoader()
package = types.ModuleType('package')
def _import(packagename, *args, **kwargs):
sys.modules[packagename] = package
return package
with unittest.mock.patch('builtins.__import__', _import):
# Since loader.discover() can modify sys.path, restore it when done.
with support.DirsOnSysPath():
# Make sure to remove 'package' from sys.modules when done.
with test.test_importlib.util.uncache('package'):
with self.assertRaises(TypeError) as cm:
loader.discover('package')
self.assertEqual(str(cm.exception),
'don\'t know how to discover from {!r}'
.format(package))
if __name__ == '__main__':
unittest.main()
| 33,693 | 874 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/__init__.py | import os
import sys
import unittest
here = os.path.dirname(__file__)
loader = unittest.defaultTestLoader
def suite():
suite = unittest.TestSuite()
for fn in os.listdir(here):
if fn.startswith("test") and fn.endswith(".py"):
modname = "unittest.test." + fn[:-3]
__import__(modname)
module = sys.modules[modname]
suite.addTest(loader.loadTestsFromModule(module))
suite.addTest(loader.loadTestsFromName('unittest.test.testmock'))
return suite
if __name__ == "__main__":
unittest.main(defaultTest="suite")
| 584 | 23 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/testmock/testhelpers.py | import time
import types
import unittest
from unittest.mock import (
call, _Call, create_autospec, MagicMock,
Mock, ANY, _CallList, patch, PropertyMock
)
from datetime import datetime
class SomeClass(object):
def one(self, a, b):
pass
def two(self):
pass
def three(self, a=None):
pass
class AnyTest(unittest.TestCase):
def test_any(self):
self.assertEqual(ANY, object())
mock = Mock()
mock(ANY)
mock.assert_called_with(ANY)
mock = Mock()
mock(foo=ANY)
mock.assert_called_with(foo=ANY)
def test_repr(self):
self.assertEqual(repr(ANY), '<ANY>')
self.assertEqual(str(ANY), '<ANY>')
def test_any_and_datetime(self):
mock = Mock()
mock(datetime.now(), foo=datetime.now())
mock.assert_called_with(ANY, foo=ANY)
def test_any_mock_calls_comparison_order(self):
mock = Mock()
d = datetime.now()
class Foo(object):
def __eq__(self, other):
return False
def __ne__(self, other):
return True
for d in datetime.now(), Foo():
mock.reset_mock()
mock(d, foo=d, bar=d)
mock.method(d, zinga=d, alpha=d)
mock().method(a1=d, z99=d)
expected = [
call(ANY, foo=ANY, bar=ANY),
call.method(ANY, zinga=ANY, alpha=ANY),
call(), call().method(a1=ANY, z99=ANY)
]
self.assertEqual(expected, mock.mock_calls)
self.assertEqual(mock.mock_calls, expected)
class CallTest(unittest.TestCase):
def test_call_with_call(self):
kall = _Call()
self.assertEqual(kall, _Call())
self.assertEqual(kall, _Call(('',)))
self.assertEqual(kall, _Call(((),)))
self.assertEqual(kall, _Call(({},)))
self.assertEqual(kall, _Call(('', ())))
self.assertEqual(kall, _Call(('', {})))
self.assertEqual(kall, _Call(('', (), {})))
self.assertEqual(kall, _Call(('foo',)))
self.assertEqual(kall, _Call(('bar', ())))
self.assertEqual(kall, _Call(('baz', {})))
self.assertEqual(kall, _Call(('spam', (), {})))
kall = _Call(((1, 2, 3),))
self.assertEqual(kall, _Call(((1, 2, 3),)))
self.assertEqual(kall, _Call(('', (1, 2, 3))))
self.assertEqual(kall, _Call(((1, 2, 3), {})))
self.assertEqual(kall, _Call(('', (1, 2, 3), {})))
kall = _Call(((1, 2, 4),))
self.assertNotEqual(kall, _Call(('', (1, 2, 3))))
self.assertNotEqual(kall, _Call(('', (1, 2, 3), {})))
kall = _Call(('foo', (1, 2, 4),))
self.assertNotEqual(kall, _Call(('', (1, 2, 4))))
self.assertNotEqual(kall, _Call(('', (1, 2, 4), {})))
self.assertNotEqual(kall, _Call(('bar', (1, 2, 4))))
self.assertNotEqual(kall, _Call(('bar', (1, 2, 4), {})))
kall = _Call(({'a': 3},))
self.assertEqual(kall, _Call(('', (), {'a': 3})))
self.assertEqual(kall, _Call(('', {'a': 3})))
self.assertEqual(kall, _Call(((), {'a': 3})))
self.assertEqual(kall, _Call(({'a': 3},)))
def test_empty__Call(self):
args = _Call()
self.assertEqual(args, ())
self.assertEqual(args, ('foo',))
self.assertEqual(args, ((),))
self.assertEqual(args, ('foo', ()))
self.assertEqual(args, ('foo',(), {}))
self.assertEqual(args, ('foo', {}))
self.assertEqual(args, ({},))
def test_named_empty_call(self):
args = _Call(('foo', (), {}))
self.assertEqual(args, ('foo',))
self.assertEqual(args, ('foo', ()))
self.assertEqual(args, ('foo',(), {}))
self.assertEqual(args, ('foo', {}))
self.assertNotEqual(args, ((),))
self.assertNotEqual(args, ())
self.assertNotEqual(args, ({},))
self.assertNotEqual(args, ('bar',))
self.assertNotEqual(args, ('bar', ()))
self.assertNotEqual(args, ('bar', {}))
def test_call_with_args(self):
args = _Call(((1, 2, 3), {}))
self.assertEqual(args, ((1, 2, 3),))
self.assertEqual(args, ('foo', (1, 2, 3)))
self.assertEqual(args, ('foo', (1, 2, 3), {}))
self.assertEqual(args, ((1, 2, 3), {}))
def test_named_call_with_args(self):
args = _Call(('foo', (1, 2, 3), {}))
self.assertEqual(args, ('foo', (1, 2, 3)))
self.assertEqual(args, ('foo', (1, 2, 3), {}))
self.assertNotEqual(args, ((1, 2, 3),))
self.assertNotEqual(args, ((1, 2, 3), {}))
def test_call_with_kwargs(self):
args = _Call(((), dict(a=3, b=4)))
self.assertEqual(args, (dict(a=3, b=4),))
self.assertEqual(args, ('foo', dict(a=3, b=4)))
self.assertEqual(args, ('foo', (), dict(a=3, b=4)))
self.assertEqual(args, ((), dict(a=3, b=4)))
def test_named_call_with_kwargs(self):
args = _Call(('foo', (), dict(a=3, b=4)))
self.assertEqual(args, ('foo', dict(a=3, b=4)))
self.assertEqual(args, ('foo', (), dict(a=3, b=4)))
self.assertNotEqual(args, (dict(a=3, b=4),))
self.assertNotEqual(args, ((), dict(a=3, b=4)))
def test_call_with_args_call_empty_name(self):
args = _Call(((1, 2, 3), {}))
self.assertEqual(args, call(1, 2, 3))
self.assertEqual(call(1, 2, 3), args)
self.assertIn(call(1, 2, 3), [args])
def test_call_ne(self):
self.assertNotEqual(_Call(((1, 2, 3),)), call(1, 2))
self.assertFalse(_Call(((1, 2, 3),)) != call(1, 2, 3))
self.assertTrue(_Call(((1, 2), {})) != call(1, 2, 3))
def test_call_non_tuples(self):
kall = _Call(((1, 2, 3),))
for value in 1, None, self, int:
self.assertNotEqual(kall, value)
self.assertFalse(kall == value)
def test_repr(self):
self.assertEqual(repr(_Call()), 'call()')
self.assertEqual(repr(_Call(('foo',))), 'call.foo()')
self.assertEqual(repr(_Call(((1, 2, 3), {'a': 'b'}))),
"call(1, 2, 3, a='b')")
self.assertEqual(repr(_Call(('bar', (1, 2, 3), {'a': 'b'}))),
"call.bar(1, 2, 3, a='b')")
self.assertEqual(repr(call), 'call')
self.assertEqual(str(call), 'call')
self.assertEqual(repr(call()), 'call()')
self.assertEqual(repr(call(1)), 'call(1)')
self.assertEqual(repr(call(zz='thing')), "call(zz='thing')")
self.assertEqual(repr(call().foo), 'call().foo')
self.assertEqual(repr(call(1).foo.bar(a=3).bing),
'call().foo.bar().bing')
self.assertEqual(
repr(call().foo(1, 2, a=3)),
"call().foo(1, 2, a=3)"
)
self.assertEqual(repr(call()()), "call()()")
self.assertEqual(repr(call(1)(2)), "call()(2)")
self.assertEqual(
repr(call()().bar().baz.beep(1)),
"call()().bar().baz.beep(1)"
)
def test_call(self):
self.assertEqual(call(), ('', (), {}))
self.assertEqual(call('foo', 'bar', one=3, two=4),
('', ('foo', 'bar'), {'one': 3, 'two': 4}))
mock = Mock()
mock(1, 2, 3)
mock(a=3, b=6)
self.assertEqual(mock.call_args_list,
[call(1, 2, 3), call(a=3, b=6)])
def test_attribute_call(self):
self.assertEqual(call.foo(1), ('foo', (1,), {}))
self.assertEqual(call.bar.baz(fish='eggs'),
('bar.baz', (), {'fish': 'eggs'}))
mock = Mock()
mock.foo(1, 2 ,3)
mock.bar.baz(a=3, b=6)
self.assertEqual(mock.method_calls,
[call.foo(1, 2, 3), call.bar.baz(a=3, b=6)])
def test_extended_call(self):
result = call(1).foo(2).bar(3, a=4)
self.assertEqual(result, ('().foo().bar', (3,), dict(a=4)))
mock = MagicMock()
mock(1, 2, a=3, b=4)
self.assertEqual(mock.call_args, call(1, 2, a=3, b=4))
self.assertNotEqual(mock.call_args, call(1, 2, 3))
self.assertEqual(mock.call_args_list, [call(1, 2, a=3, b=4)])
self.assertEqual(mock.mock_calls, [call(1, 2, a=3, b=4)])
mock = MagicMock()
mock.foo(1).bar()().baz.beep(a=6)
last_call = call.foo(1).bar()().baz.beep(a=6)
self.assertEqual(mock.mock_calls[-1], last_call)
self.assertEqual(mock.mock_calls, last_call.call_list())
def test_extended_not_equal(self):
a = call(x=1).foo
b = call(x=2).foo
self.assertEqual(a, a)
self.assertEqual(b, b)
self.assertNotEqual(a, b)
def test_nested_calls_not_equal(self):
a = call(x=1).foo().bar
b = call(x=2).foo().bar
self.assertEqual(a, a)
self.assertEqual(b, b)
self.assertNotEqual(a, b)
def test_call_list(self):
mock = MagicMock()
mock(1)
self.assertEqual(call(1).call_list(), mock.mock_calls)
mock = MagicMock()
mock(1).method(2)
self.assertEqual(call(1).method(2).call_list(),
mock.mock_calls)
mock = MagicMock()
mock(1).method(2)(3)
self.assertEqual(call(1).method(2)(3).call_list(),
mock.mock_calls)
mock = MagicMock()
int(mock(1).method(2)(3).foo.bar.baz(4)(5))
kall = call(1).method(2)(3).foo.bar.baz(4)(5).__int__()
self.assertEqual(kall.call_list(), mock.mock_calls)
def test_call_any(self):
self.assertEqual(call, ANY)
m = MagicMock()
int(m)
self.assertEqual(m.mock_calls, [ANY])
self.assertEqual([ANY], m.mock_calls)
def test_two_args_call(self):
args = _Call(((1, 2), {'a': 3}), two=True)
self.assertEqual(len(args), 2)
self.assertEqual(args[0], (1, 2))
self.assertEqual(args[1], {'a': 3})
other_args = _Call(((1, 2), {'a': 3}))
self.assertEqual(args, other_args)
def test_call_with_name(self):
self.assertEqual(_Call((), 'foo')[0], 'foo')
self.assertEqual(_Call((('bar', 'barz'),),)[0], '')
self.assertEqual(_Call((('bar', 'barz'), {'hello': 'world'}),)[0], '')
class SpecSignatureTest(unittest.TestCase):
def _check_someclass_mock(self, mock):
self.assertRaises(AttributeError, getattr, mock, 'foo')
mock.one(1, 2)
mock.one.assert_called_with(1, 2)
self.assertRaises(AssertionError,
mock.one.assert_called_with, 3, 4)
self.assertRaises(TypeError, mock.one, 1)
mock.two()
mock.two.assert_called_with()
self.assertRaises(AssertionError,
mock.two.assert_called_with, 3)
self.assertRaises(TypeError, mock.two, 1)
mock.three()
mock.three.assert_called_with()
self.assertRaises(AssertionError,
mock.three.assert_called_with, 3)
self.assertRaises(TypeError, mock.three, 3, 2)
mock.three(1)
mock.three.assert_called_with(1)
mock.three(a=1)
mock.three.assert_called_with(a=1)
def test_basic(self):
mock = create_autospec(SomeClass)
self._check_someclass_mock(mock)
mock = create_autospec(SomeClass())
self._check_someclass_mock(mock)
def test_create_autospec_return_value(self):
def f():
pass
mock = create_autospec(f, return_value='foo')
self.assertEqual(mock(), 'foo')
class Foo(object):
pass
mock = create_autospec(Foo, return_value='foo')
self.assertEqual(mock(), 'foo')
def test_autospec_reset_mock(self):
m = create_autospec(int)
int(m)
m.reset_mock()
self.assertEqual(m.__int__.call_count, 0)
def test_mocking_unbound_methods(self):
class Foo(object):
def foo(self, foo):
pass
p = patch.object(Foo, 'foo')
mock_foo = p.start()
Foo().foo(1)
mock_foo.assert_called_with(1)
def test_create_autospec_unbound_methods(self):
# see mock issue 128
# this is expected to fail until the issue is fixed
return
class Foo(object):
def foo(self):
pass
klass = create_autospec(Foo)
instance = klass()
self.assertRaises(TypeError, instance.foo, 1)
# Note: no type checking on the "self" parameter
klass.foo(1)
klass.foo.assert_called_with(1)
self.assertRaises(TypeError, klass.foo)
def test_create_autospec_keyword_arguments(self):
class Foo(object):
a = 3
m = create_autospec(Foo, a='3')
self.assertEqual(m.a, '3')
def test_create_autospec_keyword_only_arguments(self):
def foo(a, *, b=None):
pass
m = create_autospec(foo)
m(1)
m.assert_called_with(1)
self.assertRaises(TypeError, m, 1, 2)
m(2, b=3)
m.assert_called_with(2, b=3)
def test_function_as_instance_attribute(self):
obj = SomeClass()
def f(a):
pass
obj.f = f
mock = create_autospec(obj)
mock.f('bing')
mock.f.assert_called_with('bing')
def test_spec_as_list(self):
# because spec as a list of strings in the mock constructor means
# something very different we treat a list instance as the type.
mock = create_autospec([])
mock.append('foo')
mock.append.assert_called_with('foo')
self.assertRaises(AttributeError, getattr, mock, 'foo')
class Foo(object):
foo = []
mock = create_autospec(Foo)
mock.foo.append(3)
mock.foo.append.assert_called_with(3)
self.assertRaises(AttributeError, getattr, mock.foo, 'foo')
def test_attributes(self):
class Sub(SomeClass):
attr = SomeClass()
sub_mock = create_autospec(Sub)
for mock in (sub_mock, sub_mock.attr):
self._check_someclass_mock(mock)
def test_builtin_functions_types(self):
# we could replace builtin functions / methods with a function
# with *args / **kwargs signature. Using the builtin method type
# as a spec seems to work fairly well though.
class BuiltinSubclass(list):
def bar(self, arg):
pass
sorted = sorted
attr = {}
mock = create_autospec(BuiltinSubclass)
mock.append(3)
mock.append.assert_called_with(3)
self.assertRaises(AttributeError, getattr, mock.append, 'foo')
mock.bar('foo')
mock.bar.assert_called_with('foo')
self.assertRaises(TypeError, mock.bar, 'foo', 'bar')
self.assertRaises(AttributeError, getattr, mock.bar, 'foo')
mock.sorted([1, 2])
mock.sorted.assert_called_with([1, 2])
self.assertRaises(AttributeError, getattr, mock.sorted, 'foo')
mock.attr.pop(3)
mock.attr.pop.assert_called_with(3)
self.assertRaises(AttributeError, getattr, mock.attr, 'foo')
def test_method_calls(self):
class Sub(SomeClass):
attr = SomeClass()
mock = create_autospec(Sub)
mock.one(1, 2)
mock.two()
mock.three(3)
expected = [call.one(1, 2), call.two(), call.three(3)]
self.assertEqual(mock.method_calls, expected)
mock.attr.one(1, 2)
mock.attr.two()
mock.attr.three(3)
expected.extend(
[call.attr.one(1, 2), call.attr.two(), call.attr.three(3)]
)
self.assertEqual(mock.method_calls, expected)
def test_magic_methods(self):
class BuiltinSubclass(list):
attr = {}
mock = create_autospec(BuiltinSubclass)
self.assertEqual(list(mock), [])
self.assertRaises(TypeError, int, mock)
self.assertRaises(TypeError, int, mock.attr)
self.assertEqual(list(mock), [])
self.assertIsInstance(mock['foo'], MagicMock)
self.assertIsInstance(mock.attr['foo'], MagicMock)
def test_spec_set(self):
class Sub(SomeClass):
attr = SomeClass()
for spec in (Sub, Sub()):
mock = create_autospec(spec, spec_set=True)
self._check_someclass_mock(mock)
self.assertRaises(AttributeError, setattr, mock, 'foo', 'bar')
self.assertRaises(AttributeError, setattr, mock.attr, 'foo', 'bar')
def test_descriptors(self):
class Foo(object):
@classmethod
def f(cls, a, b):
pass
@staticmethod
def g(a, b):
pass
class Bar(Foo):
pass
class Baz(SomeClass, Bar):
pass
for spec in (Foo, Foo(), Bar, Bar(), Baz, Baz()):
mock = create_autospec(spec)
mock.f(1, 2)
mock.f.assert_called_once_with(1, 2)
mock.g(3, 4)
mock.g.assert_called_once_with(3, 4)
def test_recursive(self):
class A(object):
def a(self):
pass
foo = 'foo bar baz'
bar = foo
A.B = A
mock = create_autospec(A)
mock()
self.assertFalse(mock.B.called)
mock.a()
mock.B.a()
self.assertEqual(mock.method_calls, [call.a(), call.B.a()])
self.assertIs(A.foo, A.bar)
self.assertIsNot(mock.foo, mock.bar)
mock.foo.lower()
self.assertRaises(AssertionError, mock.bar.lower.assert_called_with)
def test_spec_inheritance_for_classes(self):
class Foo(object):
def a(self, x):
pass
class Bar(object):
def f(self, y):
pass
class_mock = create_autospec(Foo)
self.assertIsNot(class_mock, class_mock())
for this_mock in class_mock, class_mock():
this_mock.a(x=5)
this_mock.a.assert_called_with(x=5)
this_mock.a.assert_called_with(5)
self.assertRaises(TypeError, this_mock.a, 'foo', 'bar')
self.assertRaises(AttributeError, getattr, this_mock, 'b')
instance_mock = create_autospec(Foo())
instance_mock.a(5)
instance_mock.a.assert_called_with(5)
instance_mock.a.assert_called_with(x=5)
self.assertRaises(TypeError, instance_mock.a, 'foo', 'bar')
self.assertRaises(AttributeError, getattr, instance_mock, 'b')
# The return value isn't isn't callable
self.assertRaises(TypeError, instance_mock)
instance_mock.Bar.f(6)
instance_mock.Bar.f.assert_called_with(6)
instance_mock.Bar.f.assert_called_with(y=6)
self.assertRaises(AttributeError, getattr, instance_mock.Bar, 'g')
instance_mock.Bar().f(6)
instance_mock.Bar().f.assert_called_with(6)
instance_mock.Bar().f.assert_called_with(y=6)
self.assertRaises(AttributeError, getattr, instance_mock.Bar(), 'g')
def test_inherit(self):
class Foo(object):
a = 3
Foo.Foo = Foo
# class
mock = create_autospec(Foo)
instance = mock()
self.assertRaises(AttributeError, getattr, instance, 'b')
attr_instance = mock.Foo()
self.assertRaises(AttributeError, getattr, attr_instance, 'b')
# instance
mock = create_autospec(Foo())
self.assertRaises(AttributeError, getattr, mock, 'b')
self.assertRaises(TypeError, mock)
# attribute instance
call_result = mock.Foo()
self.assertRaises(AttributeError, getattr, call_result, 'b')
def test_builtins(self):
# used to fail with infinite recursion
create_autospec(1)
create_autospec(int)
create_autospec('foo')
create_autospec(str)
create_autospec({})
create_autospec(dict)
create_autospec([])
create_autospec(list)
create_autospec(set())
create_autospec(set)
create_autospec(1.0)
create_autospec(float)
create_autospec(1j)
create_autospec(complex)
create_autospec(False)
create_autospec(True)
def test_function(self):
def f(a, b):
pass
mock = create_autospec(f)
self.assertRaises(TypeError, mock)
mock(1, 2)
mock.assert_called_with(1, 2)
mock.assert_called_with(1, b=2)
mock.assert_called_with(a=1, b=2)
f.f = f
mock = create_autospec(f)
self.assertRaises(TypeError, mock.f)
mock.f(3, 4)
mock.f.assert_called_with(3, 4)
mock.f.assert_called_with(a=3, b=4)
def test_skip_attributeerrors(self):
class Raiser(object):
def __get__(self, obj, type=None):
if obj is None:
raise AttributeError('Can only be accessed via an instance')
class RaiserClass(object):
raiser = Raiser()
@staticmethod
def existing(a, b):
return a + b
s = create_autospec(RaiserClass)
self.assertRaises(TypeError, lambda x: s.existing(1, 2, 3))
s.existing(1, 2)
self.assertRaises(AttributeError, lambda: s.nonexisting)
# check we can fetch the raiser attribute and it has no spec
obj = s.raiser
obj.foo, obj.bar
def test_signature_class(self):
class Foo(object):
def __init__(self, a, b=3):
pass
mock = create_autospec(Foo)
self.assertRaises(TypeError, mock)
mock(1)
mock.assert_called_once_with(1)
mock.assert_called_once_with(a=1)
self.assertRaises(AssertionError, mock.assert_called_once_with, 2)
mock(4, 5)
mock.assert_called_with(4, 5)
mock.assert_called_with(a=4, b=5)
self.assertRaises(AssertionError, mock.assert_called_with, a=5, b=4)
def test_class_with_no_init(self):
# this used to raise an exception
# due to trying to get a signature from object.__init__
class Foo(object):
pass
create_autospec(Foo)
def test_signature_callable(self):
class Callable(object):
def __init__(self, x, y):
pass
def __call__(self, a):
pass
mock = create_autospec(Callable)
mock(1, 2)
mock.assert_called_once_with(1, 2)
mock.assert_called_once_with(x=1, y=2)
self.assertRaises(TypeError, mock, 'a')
instance = mock(1, 2)
self.assertRaises(TypeError, instance)
instance(a='a')
instance.assert_called_once_with('a')
instance.assert_called_once_with(a='a')
instance('a')
instance.assert_called_with('a')
instance.assert_called_with(a='a')
mock = create_autospec(Callable(1, 2))
mock(a='a')
mock.assert_called_once_with(a='a')
self.assertRaises(TypeError, mock)
mock('a')
mock.assert_called_with('a')
def test_signature_noncallable(self):
class NonCallable(object):
def __init__(self):
pass
mock = create_autospec(NonCallable)
instance = mock()
mock.assert_called_once_with()
self.assertRaises(TypeError, mock, 'a')
self.assertRaises(TypeError, instance)
self.assertRaises(TypeError, instance, 'a')
mock = create_autospec(NonCallable())
self.assertRaises(TypeError, mock)
self.assertRaises(TypeError, mock, 'a')
def test_create_autospec_none(self):
class Foo(object):
bar = None
mock = create_autospec(Foo)
none = mock.bar
self.assertNotIsInstance(none, type(None))
none.foo()
none.foo.assert_called_once_with()
def test_autospec_functions_with_self_in_odd_place(self):
class Foo(object):
def f(a, self):
pass
a = create_autospec(Foo)
a.f(10)
a.f.assert_called_with(10)
a.f.assert_called_with(self=10)
a.f(self=10)
a.f.assert_called_with(10)
a.f.assert_called_with(self=10)
def test_autospec_data_descriptor(self):
class Descriptor(object):
def __init__(self, value):
self.value = value
def __get__(self, obj, cls=None):
if obj is None:
return self
return self.value
def __set__(self, obj, value):
pass
class MyProperty(property):
pass
class Foo(object):
__slots__ = ['slot']
@property
def prop(self):
return 3
@MyProperty
def subprop(self):
return 4
desc = Descriptor(42)
foo = create_autospec(Foo)
def check_data_descriptor(mock_attr):
# Data descriptors don't have a spec.
self.assertIsInstance(mock_attr, MagicMock)
mock_attr(1, 2, 3)
mock_attr.abc(4, 5, 6)
mock_attr.assert_called_once_with(1, 2, 3)
mock_attr.abc.assert_called_once_with(4, 5, 6)
# property
check_data_descriptor(foo.prop)
# property subclass
check_data_descriptor(foo.subprop)
# class __slot__
check_data_descriptor(foo.slot)
# plain data descriptor
check_data_descriptor(foo.desc)
def test_autospec_on_bound_builtin_function(self):
meth = types.MethodType(time.ctime, time.time())
self.assertIsInstance(meth(), str)
mocked = create_autospec(meth)
# no signature, so no spec to check against
mocked()
mocked.assert_called_once_with()
mocked.reset_mock()
mocked(4, 5, 6)
mocked.assert_called_once_with(4, 5, 6)
class TestCallList(unittest.TestCase):
def test_args_list_contains_call_list(self):
mock = Mock()
self.assertIsInstance(mock.call_args_list, _CallList)
mock(1, 2)
mock(a=3)
mock(3, 4)
mock(b=6)
for kall in call(1, 2), call(a=3), call(3, 4), call(b=6):
self.assertIn(kall, mock.call_args_list)
calls = [call(a=3), call(3, 4)]
self.assertIn(calls, mock.call_args_list)
calls = [call(1, 2), call(a=3)]
self.assertIn(calls, mock.call_args_list)
calls = [call(3, 4), call(b=6)]
self.assertIn(calls, mock.call_args_list)
calls = [call(3, 4)]
self.assertIn(calls, mock.call_args_list)
self.assertNotIn(call('fish'), mock.call_args_list)
self.assertNotIn([call('fish')], mock.call_args_list)
def test_call_list_str(self):
mock = Mock()
mock(1, 2)
mock.foo(a=3)
mock.foo.bar().baz('fish', cat='dog')
expected = (
"[call(1, 2),\n"
" call.foo(a=3),\n"
" call.foo.bar(),\n"
" call.foo.bar().baz('fish', cat='dog')]"
)
self.assertEqual(str(mock.mock_calls), expected)
def test_propertymock(self):
p = patch('%s.SomeClass.one' % __name__, new_callable=PropertyMock)
mock = p.start()
try:
SomeClass.one
mock.assert_called_once_with()
s = SomeClass()
s.one
mock.assert_called_with()
self.assertEqual(mock.mock_calls, [call(), call()])
s.one = 3
self.assertEqual(mock.mock_calls, [call(), call(), call(3)])
finally:
p.stop()
def test_propertymock_returnvalue(self):
m = MagicMock()
p = PropertyMock()
type(m).foo = p
returned = m.foo
p.assert_called_once_with()
self.assertIsInstance(returned, MagicMock)
self.assertNotIsInstance(returned, PropertyMock)
if __name__ == '__main__':
unittest.main()
| 28,210 | 963 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/testmock/testpatch.py | # Copyright (C) 2007-2012 Michael Foord & the mock team
# E-mail: fuzzyman AT voidspace DOT org DOT uk
# http://www.voidspace.org.uk/python/mock/
import os
import sys
import unittest
from unittest.test.testmock import support
from unittest.test.testmock.support import SomeClass, is_instance
from test.test_importlib.util import uncache
from unittest.mock import (
NonCallableMock, CallableMixin, sentinel,
MagicMock, Mock, NonCallableMagicMock, patch, _patch,
DEFAULT, call, _get_target
)
builtin_string = 'builtins'
PTModule = sys.modules[__name__]
MODNAME = '%s.PTModule' % __name__
def _get_proxy(obj, get_only=True):
class Proxy(object):
def __getattr__(self, name):
return getattr(obj, name)
if not get_only:
def __setattr__(self, name, value):
setattr(obj, name, value)
def __delattr__(self, name):
delattr(obj, name)
Proxy.__setattr__ = __setattr__
Proxy.__delattr__ = __delattr__
return Proxy()
# for use in the test
something = sentinel.Something
something_else = sentinel.SomethingElse
class Foo(object):
def __init__(self, a):
pass
def f(self, a):
pass
def g(self):
pass
foo = 'bar'
class Bar(object):
def a(self):
pass
foo_name = '%s.Foo' % __name__
def function(a, b=Foo):
pass
class Container(object):
def __init__(self):
self.values = {}
def __getitem__(self, name):
return self.values[name]
def __setitem__(self, name, value):
self.values[name] = value
def __delitem__(self, name):
del self.values[name]
def __iter__(self):
return iter(self.values)
class PatchTest(unittest.TestCase):
def assertNotCallable(self, obj, magic=True):
MockClass = NonCallableMagicMock
if not magic:
MockClass = NonCallableMock
self.assertRaises(TypeError, obj)
self.assertTrue(is_instance(obj, MockClass))
self.assertFalse(is_instance(obj, CallableMixin))
def test_single_patchobject(self):
class Something(object):
attribute = sentinel.Original
@patch.object(Something, 'attribute', sentinel.Patched)
def test():
self.assertEqual(Something.attribute, sentinel.Patched, "unpatched")
test()
self.assertEqual(Something.attribute, sentinel.Original,
"patch not restored")
def test_patchobject_with_none(self):
class Something(object):
attribute = sentinel.Original
@patch.object(Something, 'attribute', None)
def test():
self.assertIsNone(Something.attribute, "unpatched")
test()
self.assertEqual(Something.attribute, sentinel.Original,
"patch not restored")
def test_multiple_patchobject(self):
class Something(object):
attribute = sentinel.Original
next_attribute = sentinel.Original2
@patch.object(Something, 'attribute', sentinel.Patched)
@patch.object(Something, 'next_attribute', sentinel.Patched2)
def test():
self.assertEqual(Something.attribute, sentinel.Patched,
"unpatched")
self.assertEqual(Something.next_attribute, sentinel.Patched2,
"unpatched")
test()
self.assertEqual(Something.attribute, sentinel.Original,
"patch not restored")
self.assertEqual(Something.next_attribute, sentinel.Original2,
"patch not restored")
def test_object_lookup_is_quite_lazy(self):
global something
original = something
@patch('%s.something' % __name__, sentinel.Something2)
def test():
pass
try:
something = sentinel.replacement_value
test()
self.assertEqual(something, sentinel.replacement_value)
finally:
something = original
def test_patch(self):
@patch('%s.something' % __name__, sentinel.Something2)
def test():
self.assertEqual(PTModule.something, sentinel.Something2,
"unpatched")
test()
self.assertEqual(PTModule.something, sentinel.Something,
"patch not restored")
@patch('%s.something' % __name__, sentinel.Something2)
@patch('%s.something_else' % __name__, sentinel.SomethingElse)
def test():
self.assertEqual(PTModule.something, sentinel.Something2,
"unpatched")
self.assertEqual(PTModule.something_else, sentinel.SomethingElse,
"unpatched")
self.assertEqual(PTModule.something, sentinel.Something,
"patch not restored")
self.assertEqual(PTModule.something_else, sentinel.SomethingElse,
"patch not restored")
# Test the patching and restoring works a second time
test()
self.assertEqual(PTModule.something, sentinel.Something,
"patch not restored")
self.assertEqual(PTModule.something_else, sentinel.SomethingElse,
"patch not restored")
mock = Mock()
mock.return_value = sentinel.Handle
@patch('%s.open' % builtin_string, mock)
def test():
self.assertEqual(open('filename', 'r'), sentinel.Handle,
"open not patched")
test()
test()
self.assertNotEqual(open, mock, "patch not restored")
def test_patch_class_attribute(self):
@patch('%s.SomeClass.class_attribute' % __name__,
sentinel.ClassAttribute)
def test():
self.assertEqual(PTModule.SomeClass.class_attribute,
sentinel.ClassAttribute, "unpatched")
test()
self.assertIsNone(PTModule.SomeClass.class_attribute,
"patch not restored")
def test_patchobject_with_default_mock(self):
class Test(object):
something = sentinel.Original
something2 = sentinel.Original2
@patch.object(Test, 'something')
def test(mock):
self.assertEqual(mock, Test.something,
"Mock not passed into test function")
self.assertIsInstance(mock, MagicMock,
"patch with two arguments did not create a mock")
test()
@patch.object(Test, 'something')
@patch.object(Test, 'something2')
def test(this1, this2, mock1, mock2):
self.assertEqual(this1, sentinel.this1,
"Patched function didn't receive initial argument")
self.assertEqual(this2, sentinel.this2,
"Patched function didn't receive second argument")
self.assertEqual(mock1, Test.something2,
"Mock not passed into test function")
self.assertEqual(mock2, Test.something,
"Second Mock not passed into test function")
self.assertIsInstance(mock2, MagicMock,
"patch with two arguments did not create a mock")
self.assertIsInstance(mock2, MagicMock,
"patch with two arguments did not create a mock")
# A hack to test that new mocks are passed the second time
self.assertNotEqual(outerMock1, mock1, "unexpected value for mock1")
self.assertNotEqual(outerMock2, mock2, "unexpected value for mock1")
return mock1, mock2
outerMock1 = outerMock2 = None
outerMock1, outerMock2 = test(sentinel.this1, sentinel.this2)
# Test that executing a second time creates new mocks
test(sentinel.this1, sentinel.this2)
def test_patch_with_spec(self):
@patch('%s.SomeClass' % __name__, spec=SomeClass)
def test(MockSomeClass):
self.assertEqual(SomeClass, MockSomeClass)
self.assertTrue(is_instance(SomeClass.wibble, MagicMock))
self.assertRaises(AttributeError, lambda: SomeClass.not_wibble)
test()
def test_patchobject_with_spec(self):
@patch.object(SomeClass, 'class_attribute', spec=SomeClass)
def test(MockAttribute):
self.assertEqual(SomeClass.class_attribute, MockAttribute)
self.assertTrue(is_instance(SomeClass.class_attribute.wibble,
MagicMock))
self.assertRaises(AttributeError,
lambda: SomeClass.class_attribute.not_wibble)
test()
def test_patch_with_spec_as_list(self):
@patch('%s.SomeClass' % __name__, spec=['wibble'])
def test(MockSomeClass):
self.assertEqual(SomeClass, MockSomeClass)
self.assertTrue(is_instance(SomeClass.wibble, MagicMock))
self.assertRaises(AttributeError, lambda: SomeClass.not_wibble)
test()
def test_patchobject_with_spec_as_list(self):
@patch.object(SomeClass, 'class_attribute', spec=['wibble'])
def test(MockAttribute):
self.assertEqual(SomeClass.class_attribute, MockAttribute)
self.assertTrue(is_instance(SomeClass.class_attribute.wibble,
MagicMock))
self.assertRaises(AttributeError,
lambda: SomeClass.class_attribute.not_wibble)
test()
def test_nested_patch_with_spec_as_list(self):
# regression test for nested decorators
@patch('%s.open' % builtin_string)
@patch('%s.SomeClass' % __name__, spec=['wibble'])
def test(MockSomeClass, MockOpen):
self.assertEqual(SomeClass, MockSomeClass)
self.assertTrue(is_instance(SomeClass.wibble, MagicMock))
self.assertRaises(AttributeError, lambda: SomeClass.not_wibble)
test()
def test_patch_with_spec_as_boolean(self):
@patch('%s.SomeClass' % __name__, spec=True)
def test(MockSomeClass):
self.assertEqual(SomeClass, MockSomeClass)
# Should not raise attribute error
MockSomeClass.wibble
self.assertRaises(AttributeError, lambda: MockSomeClass.not_wibble)
test()
def test_patch_object_with_spec_as_boolean(self):
@patch.object(PTModule, 'SomeClass', spec=True)
def test(MockSomeClass):
self.assertEqual(SomeClass, MockSomeClass)
# Should not raise attribute error
MockSomeClass.wibble
self.assertRaises(AttributeError, lambda: MockSomeClass.not_wibble)
test()
def test_patch_class_acts_with_spec_is_inherited(self):
@patch('%s.SomeClass' % __name__, spec=True)
def test(MockSomeClass):
self.assertTrue(is_instance(MockSomeClass, MagicMock))
instance = MockSomeClass()
self.assertNotCallable(instance)
# Should not raise attribute error
instance.wibble
self.assertRaises(AttributeError, lambda: instance.not_wibble)
test()
def test_patch_with_create_mocks_non_existent_attributes(self):
@patch('%s.frooble' % builtin_string, sentinel.Frooble, create=True)
def test():
self.assertEqual(frooble, sentinel.Frooble)
test()
self.assertRaises(NameError, lambda: frooble)
def test_patchobject_with_create_mocks_non_existent_attributes(self):
@patch.object(SomeClass, 'frooble', sentinel.Frooble, create=True)
def test():
self.assertEqual(SomeClass.frooble, sentinel.Frooble)
test()
self.assertFalse(hasattr(SomeClass, 'frooble'))
def test_patch_wont_create_by_default(self):
try:
@patch('%s.frooble' % builtin_string, sentinel.Frooble)
def test():
self.assertEqual(frooble, sentinel.Frooble)
test()
except AttributeError:
pass
else:
self.fail('Patching non existent attributes should fail')
self.assertRaises(NameError, lambda: frooble)
def test_patchobject_wont_create_by_default(self):
try:
@patch.object(SomeClass, 'ord', sentinel.Frooble)
def test():
self.fail('Patching non existent attributes should fail')
test()
except AttributeError:
pass
else:
self.fail('Patching non existent attributes should fail')
self.assertFalse(hasattr(SomeClass, 'ord'))
def test_patch_builtins_without_create(self):
@patch(__name__+'.ord')
def test_ord(mock_ord):
mock_ord.return_value = 101
return ord('c')
@patch(__name__+'.open')
def test_open(mock_open):
m = mock_open.return_value
m.read.return_value = 'abcd'
fobj = open('doesnotexists.txt')
data = fobj.read()
fobj.close()
return data
self.assertEqual(test_ord(), 101)
self.assertEqual(test_open(), 'abcd')
def test_patch_with_static_methods(self):
class Foo(object):
@staticmethod
def woot():
return sentinel.Static
@patch.object(Foo, 'woot', staticmethod(lambda: sentinel.Patched))
def anonymous():
self.assertEqual(Foo.woot(), sentinel.Patched)
anonymous()
self.assertEqual(Foo.woot(), sentinel.Static)
def test_patch_local(self):
foo = sentinel.Foo
@patch.object(sentinel, 'Foo', 'Foo')
def anonymous():
self.assertEqual(sentinel.Foo, 'Foo')
anonymous()
self.assertEqual(sentinel.Foo, foo)
def test_patch_slots(self):
class Foo(object):
__slots__ = ('Foo',)
foo = Foo()
foo.Foo = sentinel.Foo
@patch.object(foo, 'Foo', 'Foo')
def anonymous():
self.assertEqual(foo.Foo, 'Foo')
anonymous()
self.assertEqual(foo.Foo, sentinel.Foo)
def test_patchobject_class_decorator(self):
class Something(object):
attribute = sentinel.Original
class Foo(object):
def test_method(other_self):
self.assertEqual(Something.attribute, sentinel.Patched,
"unpatched")
def not_test_method(other_self):
self.assertEqual(Something.attribute, sentinel.Original,
"non-test method patched")
Foo = patch.object(Something, 'attribute', sentinel.Patched)(Foo)
f = Foo()
f.test_method()
f.not_test_method()
self.assertEqual(Something.attribute, sentinel.Original,
"patch not restored")
def test_patch_class_decorator(self):
class Something(object):
attribute = sentinel.Original
class Foo(object):
def test_method(other_self, mock_something):
self.assertEqual(PTModule.something, mock_something,
"unpatched")
def not_test_method(other_self):
self.assertEqual(PTModule.something, sentinel.Something,
"non-test method patched")
Foo = patch('%s.something' % __name__)(Foo)
f = Foo()
f.test_method()
f.not_test_method()
self.assertEqual(Something.attribute, sentinel.Original,
"patch not restored")
self.assertEqual(PTModule.something, sentinel.Something,
"patch not restored")
def test_patchobject_twice(self):
class Something(object):
attribute = sentinel.Original
next_attribute = sentinel.Original2
@patch.object(Something, 'attribute', sentinel.Patched)
@patch.object(Something, 'attribute', sentinel.Patched)
def test():
self.assertEqual(Something.attribute, sentinel.Patched, "unpatched")
test()
self.assertEqual(Something.attribute, sentinel.Original,
"patch not restored")
def test_patch_dict(self):
foo = {'initial': object(), 'other': 'something'}
original = foo.copy()
@patch.dict(foo)
def test():
foo['a'] = 3
del foo['initial']
foo['other'] = 'something else'
test()
self.assertEqual(foo, original)
@patch.dict(foo, {'a': 'b'})
def test():
self.assertEqual(len(foo), 3)
self.assertEqual(foo['a'], 'b')
test()
self.assertEqual(foo, original)
@patch.dict(foo, [('a', 'b')])
def test():
self.assertEqual(len(foo), 3)
self.assertEqual(foo['a'], 'b')
test()
self.assertEqual(foo, original)
def test_patch_dict_with_container_object(self):
foo = Container()
foo['initial'] = object()
foo['other'] = 'something'
original = foo.values.copy()
@patch.dict(foo)
def test():
foo['a'] = 3
del foo['initial']
foo['other'] = 'something else'
test()
self.assertEqual(foo.values, original)
@patch.dict(foo, {'a': 'b'})
def test():
self.assertEqual(len(foo.values), 3)
self.assertEqual(foo['a'], 'b')
test()
self.assertEqual(foo.values, original)
def test_patch_dict_with_clear(self):
foo = {'initial': object(), 'other': 'something'}
original = foo.copy()
@patch.dict(foo, clear=True)
def test():
self.assertEqual(foo, {})
foo['a'] = 3
foo['other'] = 'something else'
test()
self.assertEqual(foo, original)
@patch.dict(foo, {'a': 'b'}, clear=True)
def test():
self.assertEqual(foo, {'a': 'b'})
test()
self.assertEqual(foo, original)
@patch.dict(foo, [('a', 'b')], clear=True)
def test():
self.assertEqual(foo, {'a': 'b'})
test()
self.assertEqual(foo, original)
def test_patch_dict_with_container_object_and_clear(self):
foo = Container()
foo['initial'] = object()
foo['other'] = 'something'
original = foo.values.copy()
@patch.dict(foo, clear=True)
def test():
self.assertEqual(foo.values, {})
foo['a'] = 3
foo['other'] = 'something else'
test()
self.assertEqual(foo.values, original)
@patch.dict(foo, {'a': 'b'}, clear=True)
def test():
self.assertEqual(foo.values, {'a': 'b'})
test()
self.assertEqual(foo.values, original)
def test_name_preserved(self):
foo = {}
@patch('%s.SomeClass' % __name__, object())
@patch('%s.SomeClass' % __name__, object(), autospec=True)
@patch.object(SomeClass, object())
@patch.dict(foo)
def some_name():
pass
self.assertEqual(some_name.__name__, 'some_name')
def test_patch_with_exception(self):
foo = {}
@patch.dict(foo, {'a': 'b'})
def test():
raise NameError('Konrad')
try:
test()
except NameError:
pass
else:
self.fail('NameError not raised by test')
self.assertEqual(foo, {})
def test_patch_dict_with_string(self):
@patch.dict('os.environ', {'konrad_delong': 'some value'})
def test():
self.assertIn('konrad_delong', os.environ)
test()
def test_patch_descriptor(self):
# would be some effort to fix this - we could special case the
# builtin descriptors: classmethod, property, staticmethod
return
class Nothing(object):
foo = None
class Something(object):
foo = {}
@patch.object(Nothing, 'foo', 2)
@classmethod
def klass(cls):
self.assertIs(cls, Something)
@patch.object(Nothing, 'foo', 2)
@staticmethod
def static(arg):
return arg
@patch.dict(foo)
@classmethod
def klass_dict(cls):
self.assertIs(cls, Something)
@patch.dict(foo)
@staticmethod
def static_dict(arg):
return arg
# these will raise exceptions if patching descriptors is broken
self.assertEqual(Something.static('f00'), 'f00')
Something.klass()
self.assertEqual(Something.static_dict('f00'), 'f00')
Something.klass_dict()
something = Something()
self.assertEqual(something.static('f00'), 'f00')
something.klass()
self.assertEqual(something.static_dict('f00'), 'f00')
something.klass_dict()
def test_patch_spec_set(self):
@patch('%s.SomeClass' % __name__, spec=SomeClass, spec_set=True)
def test(MockClass):
MockClass.z = 'foo'
self.assertRaises(AttributeError, test)
@patch.object(support, 'SomeClass', spec=SomeClass, spec_set=True)
def test(MockClass):
MockClass.z = 'foo'
self.assertRaises(AttributeError, test)
@patch('%s.SomeClass' % __name__, spec_set=True)
def test(MockClass):
MockClass.z = 'foo'
self.assertRaises(AttributeError, test)
@patch.object(support, 'SomeClass', spec_set=True)
def test(MockClass):
MockClass.z = 'foo'
self.assertRaises(AttributeError, test)
def test_spec_set_inherit(self):
@patch('%s.SomeClass' % __name__, spec_set=True)
def test(MockClass):
instance = MockClass()
instance.z = 'foo'
self.assertRaises(AttributeError, test)
def test_patch_start_stop(self):
original = something
patcher = patch('%s.something' % __name__)
self.assertIs(something, original)
mock = patcher.start()
try:
self.assertIsNot(mock, original)
self.assertIs(something, mock)
finally:
patcher.stop()
self.assertIs(something, original)
def test_stop_without_start(self):
patcher = patch(foo_name, 'bar', 3)
# calling stop without start used to produce a very obscure error
self.assertRaises(RuntimeError, patcher.stop)
def test_patchobject_start_stop(self):
original = something
patcher = patch.object(PTModule, 'something', 'foo')
self.assertIs(something, original)
replaced = patcher.start()
try:
self.assertEqual(replaced, 'foo')
self.assertIs(something, replaced)
finally:
patcher.stop()
self.assertIs(something, original)
def test_patch_dict_start_stop(self):
d = {'foo': 'bar'}
original = d.copy()
patcher = patch.dict(d, [('spam', 'eggs')], clear=True)
self.assertEqual(d, original)
patcher.start()
try:
self.assertEqual(d, {'spam': 'eggs'})
finally:
patcher.stop()
self.assertEqual(d, original)
def test_patch_dict_class_decorator(self):
this = self
d = {'spam': 'eggs'}
original = d.copy()
class Test(object):
def test_first(self):
this.assertEqual(d, {'foo': 'bar'})
def test_second(self):
this.assertEqual(d, {'foo': 'bar'})
Test = patch.dict(d, {'foo': 'bar'}, clear=True)(Test)
self.assertEqual(d, original)
test = Test()
test.test_first()
self.assertEqual(d, original)
test.test_second()
self.assertEqual(d, original)
test = Test()
test.test_first()
self.assertEqual(d, original)
test.test_second()
self.assertEqual(d, original)
def test_get_only_proxy(self):
class Something(object):
foo = 'foo'
class SomethingElse:
foo = 'foo'
for thing in Something, SomethingElse, Something(), SomethingElse:
proxy = _get_proxy(thing)
@patch.object(proxy, 'foo', 'bar')
def test():
self.assertEqual(proxy.foo, 'bar')
test()
self.assertEqual(proxy.foo, 'foo')
self.assertEqual(thing.foo, 'foo')
self.assertNotIn('foo', proxy.__dict__)
def test_get_set_delete_proxy(self):
class Something(object):
foo = 'foo'
class SomethingElse:
foo = 'foo'
for thing in Something, SomethingElse, Something(), SomethingElse:
proxy = _get_proxy(Something, get_only=False)
@patch.object(proxy, 'foo', 'bar')
def test():
self.assertEqual(proxy.foo, 'bar')
test()
self.assertEqual(proxy.foo, 'foo')
self.assertEqual(thing.foo, 'foo')
self.assertNotIn('foo', proxy.__dict__)
def test_patch_keyword_args(self):
kwargs = {'side_effect': KeyError, 'foo.bar.return_value': 33,
'foo': MagicMock()}
patcher = patch(foo_name, **kwargs)
mock = patcher.start()
patcher.stop()
self.assertRaises(KeyError, mock)
self.assertEqual(mock.foo.bar(), 33)
self.assertIsInstance(mock.foo, MagicMock)
def test_patch_object_keyword_args(self):
kwargs = {'side_effect': KeyError, 'foo.bar.return_value': 33,
'foo': MagicMock()}
patcher = patch.object(Foo, 'f', **kwargs)
mock = patcher.start()
patcher.stop()
self.assertRaises(KeyError, mock)
self.assertEqual(mock.foo.bar(), 33)
self.assertIsInstance(mock.foo, MagicMock)
def test_patch_dict_keyword_args(self):
original = {'foo': 'bar'}
copy = original.copy()
patcher = patch.dict(original, foo=3, bar=4, baz=5)
patcher.start()
try:
self.assertEqual(original, dict(foo=3, bar=4, baz=5))
finally:
patcher.stop()
self.assertEqual(original, copy)
def test_autospec(self):
class Boo(object):
def __init__(self, a):
pass
def f(self, a):
pass
def g(self):
pass
foo = 'bar'
class Bar(object):
def a(self):
pass
def _test(mock):
mock(1)
mock.assert_called_with(1)
self.assertRaises(TypeError, mock)
def _test2(mock):
mock.f(1)
mock.f.assert_called_with(1)
self.assertRaises(TypeError, mock.f)
mock.g()
mock.g.assert_called_with()
self.assertRaises(TypeError, mock.g, 1)
self.assertRaises(AttributeError, getattr, mock, 'h')
mock.foo.lower()
mock.foo.lower.assert_called_with()
self.assertRaises(AttributeError, getattr, mock.foo, 'bar')
mock.Bar()
mock.Bar.assert_called_with()
mock.Bar.a()
mock.Bar.a.assert_called_with()
self.assertRaises(TypeError, mock.Bar.a, 1)
mock.Bar().a()
mock.Bar().a.assert_called_with()
self.assertRaises(TypeError, mock.Bar().a, 1)
self.assertRaises(AttributeError, getattr, mock.Bar, 'b')
self.assertRaises(AttributeError, getattr, mock.Bar(), 'b')
def function(mock):
_test(mock)
_test2(mock)
_test2(mock(1))
self.assertIs(mock, Foo)
return mock
test = patch(foo_name, autospec=True)(function)
mock = test()
self.assertIsNot(Foo, mock)
# test patching a second time works
test()
module = sys.modules[__name__]
test = patch.object(module, 'Foo', autospec=True)(function)
mock = test()
self.assertIsNot(Foo, mock)
# test patching a second time works
test()
def test_autospec_function(self):
@patch('%s.function' % __name__, autospec=True)
def test(mock):
function.assert_not_called()
self.assertRaises(AssertionError, function.assert_called)
self.assertRaises(AssertionError, function.assert_called_once)
function(1)
self.assertRaises(AssertionError, function.assert_not_called)
function.assert_called_with(1)
function.assert_called()
function.assert_called_once()
function(2, 3)
function.assert_called_with(2, 3)
self.assertRaises(TypeError, function)
self.assertRaises(AttributeError, getattr, function, 'foo')
test()
def test_autospec_keywords(self):
@patch('%s.function' % __name__, autospec=True,
return_value=3)
def test(mock_function):
#self.assertEqual(function.abc, 'foo')
return function(1, 2)
result = test()
self.assertEqual(result, 3)
def test_autospec_with_new(self):
patcher = patch('%s.function' % __name__, new=3, autospec=True)
self.assertRaises(TypeError, patcher.start)
module = sys.modules[__name__]
patcher = patch.object(module, 'function', new=3, autospec=True)
self.assertRaises(TypeError, patcher.start)
def test_autospec_with_object(self):
class Bar(Foo):
extra = []
patcher = patch(foo_name, autospec=Bar)
mock = patcher.start()
try:
self.assertIsInstance(mock, Bar)
self.assertIsInstance(mock.extra, list)
finally:
patcher.stop()
def test_autospec_inherits(self):
FooClass = Foo
patcher = patch(foo_name, autospec=True)
mock = patcher.start()
try:
self.assertIsInstance(mock, FooClass)
self.assertIsInstance(mock(3), FooClass)
finally:
patcher.stop()
def test_autospec_name(self):
patcher = patch(foo_name, autospec=True)
mock = patcher.start()
try:
self.assertIn(" name='Foo'", repr(mock))
self.assertIn(" name='Foo.f'", repr(mock.f))
self.assertIn(" name='Foo()'", repr(mock(None)))
self.assertIn(" name='Foo().f'", repr(mock(None).f))
finally:
patcher.stop()
def test_tracebacks(self):
@patch.object(Foo, 'f', object())
def test():
raise AssertionError
try:
test()
except:
err = sys.exc_info()
result = unittest.TextTestResult(None, None, 0)
traceback = result._exc_info_to_string(err, self)
self.assertIn('raise AssertionError', traceback)
def test_new_callable_patch(self):
patcher = patch(foo_name, new_callable=NonCallableMagicMock)
m1 = patcher.start()
patcher.stop()
m2 = patcher.start()
patcher.stop()
self.assertIsNot(m1, m2)
for mock in m1, m2:
self.assertNotCallable(m1)
def test_new_callable_patch_object(self):
patcher = patch.object(Foo, 'f', new_callable=NonCallableMagicMock)
m1 = patcher.start()
patcher.stop()
m2 = patcher.start()
patcher.stop()
self.assertIsNot(m1, m2)
for mock in m1, m2:
self.assertNotCallable(m1)
def test_new_callable_keyword_arguments(self):
class Bar(object):
kwargs = None
def __init__(self, **kwargs):
Bar.kwargs = kwargs
patcher = patch(foo_name, new_callable=Bar, arg1=1, arg2=2)
m = patcher.start()
try:
self.assertIs(type(m), Bar)
self.assertEqual(Bar.kwargs, dict(arg1=1, arg2=2))
finally:
patcher.stop()
def test_new_callable_spec(self):
class Bar(object):
kwargs = None
def __init__(self, **kwargs):
Bar.kwargs = kwargs
patcher = patch(foo_name, new_callable=Bar, spec=Bar)
patcher.start()
try:
self.assertEqual(Bar.kwargs, dict(spec=Bar))
finally:
patcher.stop()
patcher = patch(foo_name, new_callable=Bar, spec_set=Bar)
patcher.start()
try:
self.assertEqual(Bar.kwargs, dict(spec_set=Bar))
finally:
patcher.stop()
def test_new_callable_create(self):
non_existent_attr = '%s.weeeee' % foo_name
p = patch(non_existent_attr, new_callable=NonCallableMock)
self.assertRaises(AttributeError, p.start)
p = patch(non_existent_attr, new_callable=NonCallableMock,
create=True)
m = p.start()
try:
self.assertNotCallable(m, magic=False)
finally:
p.stop()
def test_new_callable_incompatible_with_new(self):
self.assertRaises(
ValueError, patch, foo_name, new=object(), new_callable=MagicMock
)
self.assertRaises(
ValueError, patch.object, Foo, 'f', new=object(),
new_callable=MagicMock
)
def test_new_callable_incompatible_with_autospec(self):
self.assertRaises(
ValueError, patch, foo_name, new_callable=MagicMock,
autospec=True
)
self.assertRaises(
ValueError, patch.object, Foo, 'f', new_callable=MagicMock,
autospec=True
)
def test_new_callable_inherit_for_mocks(self):
class MockSub(Mock):
pass
MockClasses = (
NonCallableMock, NonCallableMagicMock, MagicMock, Mock, MockSub
)
for Klass in MockClasses:
for arg in 'spec', 'spec_set':
kwargs = {arg: True}
p = patch(foo_name, new_callable=Klass, **kwargs)
m = p.start()
try:
instance = m.return_value
self.assertRaises(AttributeError, getattr, instance, 'x')
finally:
p.stop()
def test_new_callable_inherit_non_mock(self):
class NotAMock(object):
def __init__(self, spec):
self.spec = spec
p = patch(foo_name, new_callable=NotAMock, spec=True)
m = p.start()
try:
self.assertTrue(is_instance(m, NotAMock))
self.assertRaises(AttributeError, getattr, m, 'return_value')
finally:
p.stop()
self.assertEqual(m.spec, Foo)
def test_new_callable_class_decorating(self):
test = self
original = Foo
class SomeTest(object):
def _test(self, mock_foo):
test.assertIsNot(Foo, original)
test.assertIs(Foo, mock_foo)
test.assertIsInstance(Foo, SomeClass)
def test_two(self, mock_foo):
self._test(mock_foo)
def test_one(self, mock_foo):
self._test(mock_foo)
SomeTest = patch(foo_name, new_callable=SomeClass)(SomeTest)
SomeTest().test_one()
SomeTest().test_two()
self.assertIs(Foo, original)
def test_patch_multiple(self):
original_foo = Foo
original_f = Foo.f
original_g = Foo.g
patcher1 = patch.multiple(foo_name, f=1, g=2)
patcher2 = patch.multiple(Foo, f=1, g=2)
for patcher in patcher1, patcher2:
patcher.start()
try:
self.assertIs(Foo, original_foo)
self.assertEqual(Foo.f, 1)
self.assertEqual(Foo.g, 2)
finally:
patcher.stop()
self.assertIs(Foo, original_foo)
self.assertEqual(Foo.f, original_f)
self.assertEqual(Foo.g, original_g)
@patch.multiple(foo_name, f=3, g=4)
def test():
self.assertIs(Foo, original_foo)
self.assertEqual(Foo.f, 3)
self.assertEqual(Foo.g, 4)
test()
def test_patch_multiple_no_kwargs(self):
self.assertRaises(ValueError, patch.multiple, foo_name)
self.assertRaises(ValueError, patch.multiple, Foo)
def test_patch_multiple_create_mocks(self):
original_foo = Foo
original_f = Foo.f
original_g = Foo.g
@patch.multiple(foo_name, f=DEFAULT, g=3, foo=DEFAULT)
def test(f, foo):
self.assertIs(Foo, original_foo)
self.assertIs(Foo.f, f)
self.assertEqual(Foo.g, 3)
self.assertIs(Foo.foo, foo)
self.assertTrue(is_instance(f, MagicMock))
self.assertTrue(is_instance(foo, MagicMock))
test()
self.assertEqual(Foo.f, original_f)
self.assertEqual(Foo.g, original_g)
def test_patch_multiple_create_mocks_different_order(self):
# bug revealed by Jython!
original_f = Foo.f
original_g = Foo.g
patcher = patch.object(Foo, 'f', 3)
patcher.attribute_name = 'f'
other = patch.object(Foo, 'g', DEFAULT)
other.attribute_name = 'g'
patcher.additional_patchers = [other]
@patcher
def test(g):
self.assertIs(Foo.g, g)
self.assertEqual(Foo.f, 3)
test()
self.assertEqual(Foo.f, original_f)
self.assertEqual(Foo.g, original_g)
def test_patch_multiple_stacked_decorators(self):
original_foo = Foo
original_f = Foo.f
original_g = Foo.g
@patch.multiple(foo_name, f=DEFAULT)
@patch.multiple(foo_name, foo=DEFAULT)
@patch(foo_name + '.g')
def test1(g, **kwargs):
_test(g, **kwargs)
@patch.multiple(foo_name, f=DEFAULT)
@patch(foo_name + '.g')
@patch.multiple(foo_name, foo=DEFAULT)
def test2(g, **kwargs):
_test(g, **kwargs)
@patch(foo_name + '.g')
@patch.multiple(foo_name, f=DEFAULT)
@patch.multiple(foo_name, foo=DEFAULT)
def test3(g, **kwargs):
_test(g, **kwargs)
def _test(g, **kwargs):
f = kwargs.pop('f')
foo = kwargs.pop('foo')
self.assertFalse(kwargs)
self.assertIs(Foo, original_foo)
self.assertIs(Foo.f, f)
self.assertIs(Foo.g, g)
self.assertIs(Foo.foo, foo)
self.assertTrue(is_instance(f, MagicMock))
self.assertTrue(is_instance(g, MagicMock))
self.assertTrue(is_instance(foo, MagicMock))
test1()
test2()
test3()
self.assertEqual(Foo.f, original_f)
self.assertEqual(Foo.g, original_g)
def test_patch_multiple_create_mocks_patcher(self):
original_foo = Foo
original_f = Foo.f
original_g = Foo.g
patcher = patch.multiple(foo_name, f=DEFAULT, g=3, foo=DEFAULT)
result = patcher.start()
try:
f = result['f']
foo = result['foo']
self.assertEqual(set(result), set(['f', 'foo']))
self.assertIs(Foo, original_foo)
self.assertIs(Foo.f, f)
self.assertIs(Foo.foo, foo)
self.assertTrue(is_instance(f, MagicMock))
self.assertTrue(is_instance(foo, MagicMock))
finally:
patcher.stop()
self.assertEqual(Foo.f, original_f)
self.assertEqual(Foo.g, original_g)
def test_patch_multiple_decorating_class(self):
test = self
original_foo = Foo
original_f = Foo.f
original_g = Foo.g
class SomeTest(object):
def _test(self, f, foo):
test.assertIs(Foo, original_foo)
test.assertIs(Foo.f, f)
test.assertEqual(Foo.g, 3)
test.assertIs(Foo.foo, foo)
test.assertTrue(is_instance(f, MagicMock))
test.assertTrue(is_instance(foo, MagicMock))
def test_two(self, f, foo):
self._test(f, foo)
def test_one(self, f, foo):
self._test(f, foo)
SomeTest = patch.multiple(
foo_name, f=DEFAULT, g=3, foo=DEFAULT
)(SomeTest)
thing = SomeTest()
thing.test_one()
thing.test_two()
self.assertEqual(Foo.f, original_f)
self.assertEqual(Foo.g, original_g)
def test_patch_multiple_create(self):
patcher = patch.multiple(Foo, blam='blam')
self.assertRaises(AttributeError, patcher.start)
patcher = patch.multiple(Foo, blam='blam', create=True)
patcher.start()
try:
self.assertEqual(Foo.blam, 'blam')
finally:
patcher.stop()
self.assertFalse(hasattr(Foo, 'blam'))
def test_patch_multiple_spec_set(self):
# if spec_set works then we can assume that spec and autospec also
# work as the underlying machinery is the same
patcher = patch.multiple(Foo, foo=DEFAULT, spec_set=['a', 'b'])
result = patcher.start()
try:
self.assertEqual(Foo.foo, result['foo'])
Foo.foo.a(1)
Foo.foo.b(2)
Foo.foo.a.assert_called_with(1)
Foo.foo.b.assert_called_with(2)
self.assertRaises(AttributeError, setattr, Foo.foo, 'c', None)
finally:
patcher.stop()
def test_patch_multiple_new_callable(self):
class Thing(object):
pass
patcher = patch.multiple(
Foo, f=DEFAULT, g=DEFAULT, new_callable=Thing
)
result = patcher.start()
try:
self.assertIs(Foo.f, result['f'])
self.assertIs(Foo.g, result['g'])
self.assertIsInstance(Foo.f, Thing)
self.assertIsInstance(Foo.g, Thing)
self.assertIsNot(Foo.f, Foo.g)
finally:
patcher.stop()
def test_nested_patch_failure(self):
original_f = Foo.f
original_g = Foo.g
@patch.object(Foo, 'g', 1)
@patch.object(Foo, 'missing', 1)
@patch.object(Foo, 'f', 1)
def thing1():
pass
@patch.object(Foo, 'missing', 1)
@patch.object(Foo, 'g', 1)
@patch.object(Foo, 'f', 1)
def thing2():
pass
@patch.object(Foo, 'g', 1)
@patch.object(Foo, 'f', 1)
@patch.object(Foo, 'missing', 1)
def thing3():
pass
for func in thing1, thing2, thing3:
self.assertRaises(AttributeError, func)
self.assertEqual(Foo.f, original_f)
self.assertEqual(Foo.g, original_g)
def test_new_callable_failure(self):
original_f = Foo.f
original_g = Foo.g
original_foo = Foo.foo
def crasher():
raise NameError('crasher')
@patch.object(Foo, 'g', 1)
@patch.object(Foo, 'foo', new_callable=crasher)
@patch.object(Foo, 'f', 1)
def thing1():
pass
@patch.object(Foo, 'foo', new_callable=crasher)
@patch.object(Foo, 'g', 1)
@patch.object(Foo, 'f', 1)
def thing2():
pass
@patch.object(Foo, 'g', 1)
@patch.object(Foo, 'f', 1)
@patch.object(Foo, 'foo', new_callable=crasher)
def thing3():
pass
for func in thing1, thing2, thing3:
self.assertRaises(NameError, func)
self.assertEqual(Foo.f, original_f)
self.assertEqual(Foo.g, original_g)
self.assertEqual(Foo.foo, original_foo)
def test_patch_multiple_failure(self):
original_f = Foo.f
original_g = Foo.g
patcher = patch.object(Foo, 'f', 1)
patcher.attribute_name = 'f'
good = patch.object(Foo, 'g', 1)
good.attribute_name = 'g'
bad = patch.object(Foo, 'missing', 1)
bad.attribute_name = 'missing'
for additionals in [good, bad], [bad, good]:
patcher.additional_patchers = additionals
@patcher
def func():
pass
self.assertRaises(AttributeError, func)
self.assertEqual(Foo.f, original_f)
self.assertEqual(Foo.g, original_g)
def test_patch_multiple_new_callable_failure(self):
original_f = Foo.f
original_g = Foo.g
original_foo = Foo.foo
def crasher():
raise NameError('crasher')
patcher = patch.object(Foo, 'f', 1)
patcher.attribute_name = 'f'
good = patch.object(Foo, 'g', 1)
good.attribute_name = 'g'
bad = patch.object(Foo, 'foo', new_callable=crasher)
bad.attribute_name = 'foo'
for additionals in [good, bad], [bad, good]:
patcher.additional_patchers = additionals
@patcher
def func():
pass
self.assertRaises(NameError, func)
self.assertEqual(Foo.f, original_f)
self.assertEqual(Foo.g, original_g)
self.assertEqual(Foo.foo, original_foo)
def test_patch_multiple_string_subclasses(self):
Foo = type('Foo', (str,), {'fish': 'tasty'})
foo = Foo()
@patch.multiple(foo, fish='nearly gone')
def test():
self.assertEqual(foo.fish, 'nearly gone')
test()
self.assertEqual(foo.fish, 'tasty')
@patch('unittest.mock.patch.TEST_PREFIX', 'foo')
def test_patch_test_prefix(self):
class Foo(object):
thing = 'original'
def foo_one(self):
return self.thing
def foo_two(self):
return self.thing
def test_one(self):
return self.thing
def test_two(self):
return self.thing
Foo = patch.object(Foo, 'thing', 'changed')(Foo)
foo = Foo()
self.assertEqual(foo.foo_one(), 'changed')
self.assertEqual(foo.foo_two(), 'changed')
self.assertEqual(foo.test_one(), 'original')
self.assertEqual(foo.test_two(), 'original')
@patch('unittest.mock.patch.TEST_PREFIX', 'bar')
def test_patch_dict_test_prefix(self):
class Foo(object):
def bar_one(self):
return dict(the_dict)
def bar_two(self):
return dict(the_dict)
def test_one(self):
return dict(the_dict)
def test_two(self):
return dict(the_dict)
the_dict = {'key': 'original'}
Foo = patch.dict(the_dict, key='changed')(Foo)
foo =Foo()
self.assertEqual(foo.bar_one(), {'key': 'changed'})
self.assertEqual(foo.bar_two(), {'key': 'changed'})
self.assertEqual(foo.test_one(), {'key': 'original'})
self.assertEqual(foo.test_two(), {'key': 'original'})
def test_patch_with_spec_mock_repr(self):
for arg in ('spec', 'autospec', 'spec_set'):
p = patch('%s.SomeClass' % __name__, **{arg: True})
m = p.start()
try:
self.assertIn(" name='SomeClass'", repr(m))
self.assertIn(" name='SomeClass.class_attribute'",
repr(m.class_attribute))
self.assertIn(" name='SomeClass()'", repr(m()))
self.assertIn(" name='SomeClass().class_attribute'",
repr(m().class_attribute))
finally:
p.stop()
def test_patch_nested_autospec_repr(self):
with patch('unittest.test.testmock.support', autospec=True) as m:
self.assertIn(" name='support.SomeClass.wibble()'",
repr(m.SomeClass.wibble()))
self.assertIn(" name='support.SomeClass().wibble()'",
repr(m.SomeClass().wibble()))
def test_mock_calls_with_patch(self):
for arg in ('spec', 'autospec', 'spec_set'):
p = patch('%s.SomeClass' % __name__, **{arg: True})
m = p.start()
try:
m.wibble()
kalls = [call.wibble()]
self.assertEqual(m.mock_calls, kalls)
self.assertEqual(m.method_calls, kalls)
self.assertEqual(m.wibble.mock_calls, [call()])
result = m()
kalls.append(call())
self.assertEqual(m.mock_calls, kalls)
result.wibble()
kalls.append(call().wibble())
self.assertEqual(m.mock_calls, kalls)
self.assertEqual(result.mock_calls, [call.wibble()])
self.assertEqual(result.wibble.mock_calls, [call()])
self.assertEqual(result.method_calls, [call.wibble()])
finally:
p.stop()
def test_patch_imports_lazily(self):
p1 = patch('squizz.squozz')
self.assertRaises(ImportError, p1.start)
with uncache('squizz'):
squizz = Mock()
sys.modules['squizz'] = squizz
squizz.squozz = 6
p1 = patch('squizz.squozz')
squizz.squozz = 3
p1.start()
p1.stop()
self.assertEqual(squizz.squozz, 3)
def test_patch_propogrates_exc_on_exit(self):
class holder:
exc_info = None, None, None
class custom_patch(_patch):
def __exit__(self, etype=None, val=None, tb=None):
_patch.__exit__(self, etype, val, tb)
holder.exc_info = etype, val, tb
stop = __exit__
def with_custom_patch(target):
getter, attribute = _get_target(target)
return custom_patch(
getter, attribute, DEFAULT, None, False, None,
None, None, {}
)
@with_custom_patch('squizz.squozz')
def test(mock):
raise RuntimeError
with uncache('squizz'):
squizz = Mock()
sys.modules['squizz'] = squizz
self.assertRaises(RuntimeError, test)
self.assertIs(holder.exc_info[0], RuntimeError)
self.assertIsNotNone(holder.exc_info[1],
'exception value not propgated')
self.assertIsNotNone(holder.exc_info[2],
'exception traceback not propgated')
def test_create_and_specs(self):
for kwarg in ('spec', 'spec_set', 'autospec'):
p = patch('%s.doesnotexist' % __name__, create=True,
**{kwarg: True})
self.assertRaises(TypeError, p.start)
self.assertRaises(NameError, lambda: doesnotexist)
# check that spec with create is innocuous if the original exists
p = patch(MODNAME, create=True, **{kwarg: True})
p.start()
p.stop()
def test_multiple_specs(self):
original = PTModule
for kwarg in ('spec', 'spec_set'):
p = patch(MODNAME, autospec=0, **{kwarg: 0})
self.assertRaises(TypeError, p.start)
self.assertIs(PTModule, original)
for kwarg in ('spec', 'autospec'):
p = patch(MODNAME, spec_set=0, **{kwarg: 0})
self.assertRaises(TypeError, p.start)
self.assertIs(PTModule, original)
for kwarg in ('spec_set', 'autospec'):
p = patch(MODNAME, spec=0, **{kwarg: 0})
self.assertRaises(TypeError, p.start)
self.assertIs(PTModule, original)
def test_specs_false_instead_of_none(self):
p = patch(MODNAME, spec=False, spec_set=False, autospec=False)
mock = p.start()
try:
# no spec should have been set, so attribute access should not fail
mock.does_not_exist
mock.does_not_exist = 3
finally:
p.stop()
def test_falsey_spec(self):
for kwarg in ('spec', 'autospec', 'spec_set'):
p = patch(MODNAME, **{kwarg: 0})
m = p.start()
try:
self.assertRaises(AttributeError, getattr, m, 'doesnotexit')
finally:
p.stop()
def test_spec_set_true(self):
for kwarg in ('spec', 'autospec'):
p = patch(MODNAME, spec_set=True, **{kwarg: True})
m = p.start()
try:
self.assertRaises(AttributeError, setattr, m,
'doesnotexist', 'something')
self.assertRaises(AttributeError, getattr, m, 'doesnotexist')
finally:
p.stop()
def test_callable_spec_as_list(self):
spec = ('__call__',)
p = patch(MODNAME, spec=spec)
m = p.start()
try:
self.assertTrue(callable(m))
finally:
p.stop()
def test_not_callable_spec_as_list(self):
spec = ('foo', 'bar')
p = patch(MODNAME, spec=spec)
m = p.start()
try:
self.assertFalse(callable(m))
finally:
p.stop()
def test_patch_stopall(self):
unlink = os.unlink
chdir = os.chdir
path = os.path
patch('os.unlink', something).start()
patch('os.chdir', something_else).start()
@patch('os.path')
def patched(mock_path):
patch.stopall()
self.assertIs(os.path, mock_path)
self.assertIs(os.unlink, unlink)
self.assertIs(os.chdir, chdir)
patched()
self.assertIs(os.path, path)
def test_stopall_lifo(self):
stopped = []
class thing(object):
one = two = three = None
def get_patch(attribute):
class mypatch(_patch):
def stop(self):
stopped.append(attribute)
return super(mypatch, self).stop()
return mypatch(lambda: thing, attribute, None, None,
False, None, None, None, {})
[get_patch(val).start() for val in ("one", "two", "three")]
patch.stopall()
self.assertEqual(stopped, ["three", "two", "one"])
def test_special_attrs(self):
def foo(x=0):
"""TEST"""
return x
with patch.object(foo, '__defaults__', (1, )):
self.assertEqual(foo(), 1)
self.assertEqual(foo(), 0)
with patch.object(foo, '__doc__', "FUN"):
self.assertEqual(foo.__doc__, "FUN")
self.assertEqual(foo.__doc__, "TEST")
with patch.object(foo, '__module__', "testpatch2"):
self.assertEqual(foo.__module__, "testpatch2")
self.assertEqual(foo.__module__, 'unittest.test.testmock.testpatch')
with patch.object(foo, '__annotations__', dict([('s', 1, )])):
self.assertEqual(foo.__annotations__, dict([('s', 1, )]))
self.assertEqual(foo.__annotations__, dict())
def foo(*a, x=0):
return x
with patch.object(foo, '__kwdefaults__', dict([('x', 1, )])):
self.assertEqual(foo(), 1)
self.assertEqual(foo(), 0)
if __name__ == '__main__':
unittest.main()
| 55,727 | 1,859 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/testmock/support.py | def is_instance(obj, klass):
"""Version of is_instance that doesn't access __class__"""
return issubclass(type(obj), klass)
class SomeClass(object):
class_attribute = None
def wibble(self):
pass
class X(object):
pass
def examine_warnings(func):
def wrapper():
with catch_warnings(record=True) as ws:
func(ws)
return wrapper
| 387 | 22 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/testmock/__main__.py | import os
import unittest
def load_tests(loader, standard_tests, pattern):
# top level directory cached on loader instance
this_dir = os.path.dirname(__file__)
pattern = pattern or "test*.py"
# We are inside unittest.test.testmock, so the top-level is three notches up
top_level_dir = os.path.dirname(os.path.dirname(os.path.dirname(this_dir)))
package_tests = loader.discover(start_dir=this_dir, pattern=pattern,
top_level_dir=top_level_dir)
standard_tests.addTests(package_tests)
return standard_tests
if __name__ == '__main__':
unittest.main()
| 623 | 19 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/testmock/testmock.py | import copy
import sys
import tempfile
import unittest
from unittest.test.testmock.support import is_instance
from unittest import mock
from unittest.mock import (
call, DEFAULT, patch, sentinel,
MagicMock, Mock, NonCallableMock,
NonCallableMagicMock, _Call, _CallList,
create_autospec
)
class Iter(object):
def __init__(self):
self.thing = iter(['this', 'is', 'an', 'iter'])
def __iter__(self):
return self
def next(self):
return next(self.thing)
__next__ = next
class Something(object):
def meth(self, a, b, c, d=None):
pass
@classmethod
def cmeth(cls, a, b, c, d=None):
pass
@staticmethod
def smeth(a, b, c, d=None):
pass
class MockTest(unittest.TestCase):
def test_all(self):
# if __all__ is badly defined then import * will raise an error
# We have to exec it because you can't import * inside a method
# in Python 3
exec("from unittest.mock import *")
def test_constructor(self):
mock = Mock()
self.assertFalse(mock.called, "called not initialised correctly")
self.assertEqual(mock.call_count, 0,
"call_count not initialised correctly")
self.assertTrue(is_instance(mock.return_value, Mock),
"return_value not initialised correctly")
self.assertEqual(mock.call_args, None,
"call_args not initialised correctly")
self.assertEqual(mock.call_args_list, [],
"call_args_list not initialised correctly")
self.assertEqual(mock.method_calls, [],
"method_calls not initialised correctly")
# Can't use hasattr for this test as it always returns True on a mock
self.assertNotIn('_items', mock.__dict__,
"default mock should not have '_items' attribute")
self.assertIsNone(mock._mock_parent,
"parent not initialised correctly")
self.assertIsNone(mock._mock_methods,
"methods not initialised correctly")
self.assertEqual(mock._mock_children, {},
"children not initialised incorrectly")
def test_return_value_in_constructor(self):
mock = Mock(return_value=None)
self.assertIsNone(mock.return_value,
"return value in constructor not honoured")
def test_repr(self):
mock = Mock(name='foo')
self.assertIn('foo', repr(mock))
self.assertIn("'%s'" % id(mock), repr(mock))
mocks = [(Mock(), 'mock'), (Mock(name='bar'), 'bar')]
for mock, name in mocks:
self.assertIn('%s.bar' % name, repr(mock.bar))
self.assertIn('%s.foo()' % name, repr(mock.foo()))
self.assertIn('%s.foo().bing' % name, repr(mock.foo().bing))
self.assertIn('%s()' % name, repr(mock()))
self.assertIn('%s()()' % name, repr(mock()()))
self.assertIn('%s()().foo.bar.baz().bing' % name,
repr(mock()().foo.bar.baz().bing))
def test_repr_with_spec(self):
class X(object):
pass
mock = Mock(spec=X)
self.assertIn(" spec='X' ", repr(mock))
mock = Mock(spec=X())
self.assertIn(" spec='X' ", repr(mock))
mock = Mock(spec_set=X)
self.assertIn(" spec_set='X' ", repr(mock))
mock = Mock(spec_set=X())
self.assertIn(" spec_set='X' ", repr(mock))
mock = Mock(spec=X, name='foo')
self.assertIn(" spec='X' ", repr(mock))
self.assertIn(" name='foo' ", repr(mock))
mock = Mock(name='foo')
self.assertNotIn("spec", repr(mock))
mock = Mock()
self.assertNotIn("spec", repr(mock))
mock = Mock(spec=['foo'])
self.assertNotIn("spec", repr(mock))
def test_side_effect(self):
mock = Mock()
def effect(*args, **kwargs):
raise SystemError('kablooie')
mock.side_effect = effect
self.assertRaises(SystemError, mock, 1, 2, fish=3)
mock.assert_called_with(1, 2, fish=3)
results = [1, 2, 3]
def effect():
return results.pop()
mock.side_effect = effect
self.assertEqual([mock(), mock(), mock()], [3, 2, 1],
"side effect not used correctly")
mock = Mock(side_effect=sentinel.SideEffect)
self.assertEqual(mock.side_effect, sentinel.SideEffect,
"side effect in constructor not used")
def side_effect():
return DEFAULT
mock = Mock(side_effect=side_effect, return_value=sentinel.RETURN)
self.assertEqual(mock(), sentinel.RETURN)
def test_autospec_side_effect(self):
# Test for issue17826
results = [1, 2, 3]
def effect():
return results.pop()
def f():
pass
mock = create_autospec(f)
mock.side_effect = [1, 2, 3]
self.assertEqual([mock(), mock(), mock()], [1, 2, 3],
"side effect not used correctly in create_autospec")
# Test where side effect is a callable
results = [1, 2, 3]
mock = create_autospec(f)
mock.side_effect = effect
self.assertEqual([mock(), mock(), mock()], [3, 2, 1],
"callable side effect not used correctly")
def test_autospec_side_effect_exception(self):
# Test for issue 23661
def f():
pass
mock = create_autospec(f)
mock.side_effect = ValueError('Bazinga!')
self.assertRaisesRegex(ValueError, 'Bazinga!', mock)
@unittest.skipUnless('java' in sys.platform,
'This test only applies to Jython')
def test_java_exception_side_effect(self):
import java
mock = Mock(side_effect=java.lang.RuntimeException("Boom!"))
# can't use assertRaises with java exceptions
try:
mock(1, 2, fish=3)
except java.lang.RuntimeException:
pass
else:
self.fail('java exception not raised')
mock.assert_called_with(1,2, fish=3)
def test_reset_mock(self):
parent = Mock()
spec = ["something"]
mock = Mock(name="child", parent=parent, spec=spec)
mock(sentinel.Something, something=sentinel.SomethingElse)
something = mock.something
mock.something()
mock.side_effect = sentinel.SideEffect
return_value = mock.return_value
return_value()
mock.reset_mock()
self.assertEqual(mock._mock_name, "child",
"name incorrectly reset")
self.assertEqual(mock._mock_parent, parent,
"parent incorrectly reset")
self.assertEqual(mock._mock_methods, spec,
"methods incorrectly reset")
self.assertFalse(mock.called, "called not reset")
self.assertEqual(mock.call_count, 0, "call_count not reset")
self.assertEqual(mock.call_args, None, "call_args not reset")
self.assertEqual(mock.call_args_list, [], "call_args_list not reset")
self.assertEqual(mock.method_calls, [],
"method_calls not initialised correctly: %r != %r" %
(mock.method_calls, []))
self.assertEqual(mock.mock_calls, [])
self.assertEqual(mock.side_effect, sentinel.SideEffect,
"side_effect incorrectly reset")
self.assertEqual(mock.return_value, return_value,
"return_value incorrectly reset")
self.assertFalse(return_value.called, "return value mock not reset")
self.assertEqual(mock._mock_children, {'something': something},
"children reset incorrectly")
self.assertEqual(mock.something, something,
"children incorrectly cleared")
self.assertFalse(mock.something.called, "child not reset")
def test_reset_mock_recursion(self):
mock = Mock()
mock.return_value = mock
# used to cause recursion
mock.reset_mock()
def test_reset_mock_on_mock_open_issue_18622(self):
a = mock.mock_open()
a.reset_mock()
def test_call(self):
mock = Mock()
self.assertTrue(is_instance(mock.return_value, Mock),
"Default return_value should be a Mock")
result = mock()
self.assertEqual(mock(), result,
"different result from consecutive calls")
mock.reset_mock()
ret_val = mock(sentinel.Arg)
self.assertTrue(mock.called, "called not set")
self.assertEqual(mock.call_count, 1, "call_count incoreect")
self.assertEqual(mock.call_args, ((sentinel.Arg,), {}),
"call_args not set")
self.assertEqual(mock.call_args_list, [((sentinel.Arg,), {})],
"call_args_list not initialised correctly")
mock.return_value = sentinel.ReturnValue
ret_val = mock(sentinel.Arg, key=sentinel.KeyArg)
self.assertEqual(ret_val, sentinel.ReturnValue,
"incorrect return value")
self.assertEqual(mock.call_count, 2, "call_count incorrect")
self.assertEqual(mock.call_args,
((sentinel.Arg,), {'key': sentinel.KeyArg}),
"call_args not set")
self.assertEqual(mock.call_args_list, [
((sentinel.Arg,), {}),
((sentinel.Arg,), {'key': sentinel.KeyArg})
],
"call_args_list not set")
def test_call_args_comparison(self):
mock = Mock()
mock()
mock(sentinel.Arg)
mock(kw=sentinel.Kwarg)
mock(sentinel.Arg, kw=sentinel.Kwarg)
self.assertEqual(mock.call_args_list, [
(),
((sentinel.Arg,),),
({"kw": sentinel.Kwarg},),
((sentinel.Arg,), {"kw": sentinel.Kwarg})
])
self.assertEqual(mock.call_args,
((sentinel.Arg,), {"kw": sentinel.Kwarg}))
# Comparing call_args to a long sequence should not raise
# an exception. See issue 24857.
self.assertFalse(mock.call_args == "a long sequence")
def test_calls_equal_with_any(self):
# Check that equality and non-equality is consistent even when
# comparing with mock.ANY
mm = mock.MagicMock()
self.assertTrue(mm == mm)
self.assertFalse(mm != mm)
self.assertFalse(mm == mock.MagicMock())
self.assertTrue(mm != mock.MagicMock())
self.assertTrue(mm == mock.ANY)
self.assertFalse(mm != mock.ANY)
self.assertTrue(mock.ANY == mm)
self.assertFalse(mock.ANY != mm)
call1 = mock.call(mock.MagicMock())
call2 = mock.call(mock.ANY)
self.assertTrue(call1 == call2)
self.assertFalse(call1 != call2)
self.assertTrue(call2 == call1)
self.assertFalse(call2 != call1)
def test_assert_called_with(self):
mock = Mock()
mock()
# Will raise an exception if it fails
mock.assert_called_with()
self.assertRaises(AssertionError, mock.assert_called_with, 1)
mock.reset_mock()
self.assertRaises(AssertionError, mock.assert_called_with)
mock(1, 2, 3, a='fish', b='nothing')
mock.assert_called_with(1, 2, 3, a='fish', b='nothing')
def test_assert_called_with_any(self):
m = MagicMock()
m(MagicMock())
m.assert_called_with(mock.ANY)
def test_assert_called_with_function_spec(self):
def f(a, b, c, d=None):
pass
mock = Mock(spec=f)
mock(1, b=2, c=3)
mock.assert_called_with(1, 2, 3)
mock.assert_called_with(a=1, b=2, c=3)
self.assertRaises(AssertionError, mock.assert_called_with,
1, b=3, c=2)
# Expected call doesn't match the spec's signature
with self.assertRaises(AssertionError) as cm:
mock.assert_called_with(e=8)
self.assertIsInstance(cm.exception.__cause__, TypeError)
def test_assert_called_with_method_spec(self):
def _check(mock):
mock(1, b=2, c=3)
mock.assert_called_with(1, 2, 3)
mock.assert_called_with(a=1, b=2, c=3)
self.assertRaises(AssertionError, mock.assert_called_with,
1, b=3, c=2)
mock = Mock(spec=Something().meth)
_check(mock)
mock = Mock(spec=Something.cmeth)
_check(mock)
mock = Mock(spec=Something().cmeth)
_check(mock)
mock = Mock(spec=Something.smeth)
_check(mock)
mock = Mock(spec=Something().smeth)
_check(mock)
def test_assert_called_once_with(self):
mock = Mock()
mock()
# Will raise an exception if it fails
mock.assert_called_once_with()
mock()
self.assertRaises(AssertionError, mock.assert_called_once_with)
mock.reset_mock()
self.assertRaises(AssertionError, mock.assert_called_once_with)
mock('foo', 'bar', baz=2)
mock.assert_called_once_with('foo', 'bar', baz=2)
mock.reset_mock()
mock('foo', 'bar', baz=2)
self.assertRaises(
AssertionError,
lambda: mock.assert_called_once_with('bob', 'bar', baz=2)
)
def test_assert_called_once_with_function_spec(self):
def f(a, b, c, d=None):
pass
mock = Mock(spec=f)
mock(1, b=2, c=3)
mock.assert_called_once_with(1, 2, 3)
mock.assert_called_once_with(a=1, b=2, c=3)
self.assertRaises(AssertionError, mock.assert_called_once_with,
1, b=3, c=2)
# Expected call doesn't match the spec's signature
with self.assertRaises(AssertionError) as cm:
mock.assert_called_once_with(e=8)
self.assertIsInstance(cm.exception.__cause__, TypeError)
# Mock called more than once => always fails
mock(4, 5, 6)
self.assertRaises(AssertionError, mock.assert_called_once_with,
1, 2, 3)
self.assertRaises(AssertionError, mock.assert_called_once_with,
4, 5, 6)
def test_attribute_access_returns_mocks(self):
mock = Mock()
something = mock.something
self.assertTrue(is_instance(something, Mock), "attribute isn't a mock")
self.assertEqual(mock.something, something,
"different attributes returned for same name")
# Usage example
mock = Mock()
mock.something.return_value = 3
self.assertEqual(mock.something(), 3, "method returned wrong value")
self.assertTrue(mock.something.called,
"method didn't record being called")
def test_attributes_have_name_and_parent_set(self):
mock = Mock()
something = mock.something
self.assertEqual(something._mock_name, "something",
"attribute name not set correctly")
self.assertEqual(something._mock_parent, mock,
"attribute parent not set correctly")
def test_method_calls_recorded(self):
mock = Mock()
mock.something(3, fish=None)
mock.something_else.something(6, cake=sentinel.Cake)
self.assertEqual(mock.something_else.method_calls,
[("something", (6,), {'cake': sentinel.Cake})],
"method calls not recorded correctly")
self.assertEqual(mock.method_calls, [
("something", (3,), {'fish': None}),
("something_else.something", (6,), {'cake': sentinel.Cake})
],
"method calls not recorded correctly")
def test_method_calls_compare_easily(self):
mock = Mock()
mock.something()
self.assertEqual(mock.method_calls, [('something',)])
self.assertEqual(mock.method_calls, [('something', (), {})])
mock = Mock()
mock.something('different')
self.assertEqual(mock.method_calls, [('something', ('different',))])
self.assertEqual(mock.method_calls,
[('something', ('different',), {})])
mock = Mock()
mock.something(x=1)
self.assertEqual(mock.method_calls, [('something', {'x': 1})])
self.assertEqual(mock.method_calls, [('something', (), {'x': 1})])
mock = Mock()
mock.something('different', some='more')
self.assertEqual(mock.method_calls, [
('something', ('different',), {'some': 'more'})
])
def test_only_allowed_methods_exist(self):
for spec in ['something'], ('something',):
for arg in 'spec', 'spec_set':
mock = Mock(**{arg: spec})
# this should be allowed
mock.something
self.assertRaisesRegex(
AttributeError,
"Mock object has no attribute 'something_else'",
getattr, mock, 'something_else'
)
def test_from_spec(self):
class Something(object):
x = 3
__something__ = None
def y(self):
pass
def test_attributes(mock):
# should work
mock.x
mock.y
mock.__something__
self.assertRaisesRegex(
AttributeError,
"Mock object has no attribute 'z'",
getattr, mock, 'z'
)
self.assertRaisesRegex(
AttributeError,
"Mock object has no attribute '__foobar__'",
getattr, mock, '__foobar__'
)
test_attributes(Mock(spec=Something))
test_attributes(Mock(spec=Something()))
def test_wraps_calls(self):
real = Mock()
mock = Mock(wraps=real)
self.assertEqual(mock(), real())
real.reset_mock()
mock(1, 2, fish=3)
real.assert_called_with(1, 2, fish=3)
def test_wraps_prevents_automatic_creation_of_mocks(self):
class Real(object):
pass
real = Real()
mock = Mock(wraps=real)
self.assertRaises(AttributeError, lambda: mock.new_attr())
def test_wraps_call_with_nondefault_return_value(self):
real = Mock()
mock = Mock(wraps=real)
mock.return_value = 3
self.assertEqual(mock(), 3)
self.assertFalse(real.called)
def test_wraps_attributes(self):
class Real(object):
attribute = Mock()
real = Real()
mock = Mock(wraps=real)
self.assertEqual(mock.attribute(), real.attribute())
self.assertRaises(AttributeError, lambda: mock.fish)
self.assertNotEqual(mock.attribute, real.attribute)
result = mock.attribute.frog(1, 2, fish=3)
Real.attribute.frog.assert_called_with(1, 2, fish=3)
self.assertEqual(result, Real.attribute.frog())
def test_customize_wrapped_object_with_side_effect_iterable_with_default(self):
class Real(object):
def method(self):
return sentinel.ORIGINAL_VALUE
real = Real()
mock = Mock(wraps=real)
mock.method.side_effect = [sentinel.VALUE1, DEFAULT]
self.assertEqual(mock.method(), sentinel.VALUE1)
self.assertEqual(mock.method(), sentinel.ORIGINAL_VALUE)
self.assertRaises(StopIteration, mock.method)
def test_customize_wrapped_object_with_side_effect_iterable(self):
class Real(object):
def method(self):
raise NotImplementedError()
real = Real()
mock = Mock(wraps=real)
mock.method.side_effect = [sentinel.VALUE1, sentinel.VALUE2]
self.assertEqual(mock.method(), sentinel.VALUE1)
self.assertEqual(mock.method(), sentinel.VALUE2)
self.assertRaises(StopIteration, mock.method)
def test_customize_wrapped_object_with_side_effect_exception(self):
class Real(object):
def method(self):
raise NotImplementedError()
real = Real()
mock = Mock(wraps=real)
mock.method.side_effect = RuntimeError
self.assertRaises(RuntimeError, mock.method)
def test_customize_wrapped_object_with_side_effect_function(self):
class Real(object):
def method(self):
raise NotImplementedError()
def side_effect():
return sentinel.VALUE
real = Real()
mock = Mock(wraps=real)
mock.method.side_effect = side_effect
self.assertEqual(mock.method(), sentinel.VALUE)
def test_customize_wrapped_object_with_return_value(self):
class Real(object):
def method(self):
raise NotImplementedError()
real = Real()
mock = Mock(wraps=real)
mock.method.return_value = sentinel.VALUE
self.assertEqual(mock.method(), sentinel.VALUE)
def test_customize_wrapped_object_with_return_value_and_side_effect(self):
# side_effect should always take precedence over return_value.
class Real(object):
def method(self):
raise NotImplementedError()
real = Real()
mock = Mock(wraps=real)
mock.method.side_effect = [sentinel.VALUE1, sentinel.VALUE2]
mock.method.return_value = sentinel.WRONG_VALUE
self.assertEqual(mock.method(), sentinel.VALUE1)
self.assertEqual(mock.method(), sentinel.VALUE2)
self.assertRaises(StopIteration, mock.method)
def test_customize_wrapped_object_with_return_value_and_side_effect2(self):
# side_effect can return DEFAULT to default to return_value
class Real(object):
def method(self):
raise NotImplementedError()
real = Real()
mock = Mock(wraps=real)
mock.method.side_effect = lambda: DEFAULT
mock.method.return_value = sentinel.VALUE
self.assertEqual(mock.method(), sentinel.VALUE)
def test_customize_wrapped_object_with_return_value_and_side_effect_default(self):
class Real(object):
def method(self):
raise NotImplementedError()
real = Real()
mock = Mock(wraps=real)
mock.method.side_effect = [sentinel.VALUE1, DEFAULT]
mock.method.return_value = sentinel.RETURN
self.assertEqual(mock.method(), sentinel.VALUE1)
self.assertEqual(mock.method(), sentinel.RETURN)
self.assertRaises(StopIteration, mock.method)
def test_exceptional_side_effect(self):
mock = Mock(side_effect=AttributeError)
self.assertRaises(AttributeError, mock)
mock = Mock(side_effect=AttributeError('foo'))
self.assertRaises(AttributeError, mock)
def test_baseexceptional_side_effect(self):
mock = Mock(side_effect=KeyboardInterrupt)
self.assertRaises(KeyboardInterrupt, mock)
mock = Mock(side_effect=KeyboardInterrupt('foo'))
self.assertRaises(KeyboardInterrupt, mock)
def test_assert_called_with_message(self):
mock = Mock()
self.assertRaisesRegex(AssertionError, 'Not called',
mock.assert_called_with)
def test_assert_called_once_with_message(self):
mock = Mock(name='geoffrey')
self.assertRaisesRegex(AssertionError,
r"Expected 'geoffrey' to be called once\.",
mock.assert_called_once_with)
def test__name__(self):
mock = Mock()
self.assertRaises(AttributeError, lambda: mock.__name__)
mock.__name__ = 'foo'
self.assertEqual(mock.__name__, 'foo')
def test_spec_list_subclass(self):
class Sub(list):
pass
mock = Mock(spec=Sub(['foo']))
mock.append(3)
mock.append.assert_called_with(3)
self.assertRaises(AttributeError, getattr, mock, 'foo')
def test_spec_class(self):
class X(object):
pass
mock = Mock(spec=X)
self.assertIsInstance(mock, X)
mock = Mock(spec=X())
self.assertIsInstance(mock, X)
self.assertIs(mock.__class__, X)
self.assertEqual(Mock().__class__.__name__, 'Mock')
mock = Mock(spec_set=X)
self.assertIsInstance(mock, X)
mock = Mock(spec_set=X())
self.assertIsInstance(mock, X)
def test_setting_attribute_with_spec_set(self):
class X(object):
y = 3
mock = Mock(spec=X)
mock.x = 'foo'
mock = Mock(spec_set=X)
def set_attr():
mock.x = 'foo'
mock.y = 'foo'
self.assertRaises(AttributeError, set_attr)
def test_copy(self):
current = sys.getrecursionlimit()
self.addCleanup(sys.setrecursionlimit, current)
# can't use sys.maxint as this doesn't exist in Python 3
sys.setrecursionlimit(int(10e8))
# this segfaults without the fix in place
copy.copy(Mock())
def test_subclass_with_properties(self):
class SubClass(Mock):
def _get(self):
return 3
def _set(self, value):
raise NameError('strange error')
some_attribute = property(_get, _set)
s = SubClass(spec_set=SubClass)
self.assertEqual(s.some_attribute, 3)
def test():
s.some_attribute = 3
self.assertRaises(NameError, test)
def test():
s.foo = 'bar'
self.assertRaises(AttributeError, test)
def test_setting_call(self):
mock = Mock()
def __call__(self, a):
return self._mock_call(a)
type(mock).__call__ = __call__
mock('one')
mock.assert_called_with('one')
self.assertRaises(TypeError, mock, 'one', 'two')
def test_dir(self):
mock = Mock()
attrs = set(dir(mock))
type_attrs = set([m for m in dir(Mock) if not m.startswith('_')])
# all public attributes from the type are included
self.assertEqual(set(), type_attrs - attrs)
# creates these attributes
mock.a, mock.b
self.assertIn('a', dir(mock))
self.assertIn('b', dir(mock))
# instance attributes
mock.c = mock.d = None
self.assertIn('c', dir(mock))
self.assertIn('d', dir(mock))
# magic methods
mock.__iter__ = lambda s: iter([])
self.assertIn('__iter__', dir(mock))
def test_dir_from_spec(self):
mock = Mock(spec=unittest.TestCase)
testcase_attrs = set(dir(unittest.TestCase))
attrs = set(dir(mock))
# all attributes from the spec are included
self.assertEqual(set(), testcase_attrs - attrs)
# shadow a sys attribute
mock.version = 3
self.assertEqual(dir(mock).count('version'), 1)
def test_filter_dir(self):
patcher = patch.object(mock, 'FILTER_DIR', False)
patcher.start()
try:
attrs = set(dir(Mock()))
type_attrs = set(dir(Mock))
# ALL attributes from the type are included
self.assertEqual(set(), type_attrs - attrs)
finally:
patcher.stop()
def test_configure_mock(self):
mock = Mock(foo='bar')
self.assertEqual(mock.foo, 'bar')
mock = MagicMock(foo='bar')
self.assertEqual(mock.foo, 'bar')
kwargs = {'side_effect': KeyError, 'foo.bar.return_value': 33,
'foo': MagicMock()}
mock = Mock(**kwargs)
self.assertRaises(KeyError, mock)
self.assertEqual(mock.foo.bar(), 33)
self.assertIsInstance(mock.foo, MagicMock)
mock = Mock()
mock.configure_mock(**kwargs)
self.assertRaises(KeyError, mock)
self.assertEqual(mock.foo.bar(), 33)
self.assertIsInstance(mock.foo, MagicMock)
def assertRaisesWithMsg(self, exception, message, func, *args, **kwargs):
# needed because assertRaisesRegex doesn't work easily with newlines
try:
func(*args, **kwargs)
except:
instance = sys.exc_info()[1]
self.assertIsInstance(instance, exception)
else:
self.fail('Exception %r not raised' % (exception,))
msg = str(instance)
self.assertEqual(msg, message)
def test_assert_called_with_failure_message(self):
mock = NonCallableMock()
expected = "mock(1, '2', 3, bar='foo')"
message = 'Expected call: %s\nNot called'
self.assertRaisesWithMsg(
AssertionError, message % (expected,),
mock.assert_called_with, 1, '2', 3, bar='foo'
)
mock.foo(1, '2', 3, foo='foo')
asserters = [
mock.foo.assert_called_with, mock.foo.assert_called_once_with
]
for meth in asserters:
actual = "foo(1, '2', 3, foo='foo')"
expected = "foo(1, '2', 3, bar='foo')"
message = 'Expected call: %s\nActual call: %s'
self.assertRaisesWithMsg(
AssertionError, message % (expected, actual),
meth, 1, '2', 3, bar='foo'
)
# just kwargs
for meth in asserters:
actual = "foo(1, '2', 3, foo='foo')"
expected = "foo(bar='foo')"
message = 'Expected call: %s\nActual call: %s'
self.assertRaisesWithMsg(
AssertionError, message % (expected, actual),
meth, bar='foo'
)
# just args
for meth in asserters:
actual = "foo(1, '2', 3, foo='foo')"
expected = "foo(1, 2, 3)"
message = 'Expected call: %s\nActual call: %s'
self.assertRaisesWithMsg(
AssertionError, message % (expected, actual),
meth, 1, 2, 3
)
# empty
for meth in asserters:
actual = "foo(1, '2', 3, foo='foo')"
expected = "foo()"
message = 'Expected call: %s\nActual call: %s'
self.assertRaisesWithMsg(
AssertionError, message % (expected, actual), meth
)
def test_mock_calls(self):
mock = MagicMock()
# need to do this because MagicMock.mock_calls used to just return
# a MagicMock which also returned a MagicMock when __eq__ was called
self.assertIs(mock.mock_calls == [], True)
mock = MagicMock()
mock()
expected = [('', (), {})]
self.assertEqual(mock.mock_calls, expected)
mock.foo()
expected.append(call.foo())
self.assertEqual(mock.mock_calls, expected)
# intermediate mock_calls work too
self.assertEqual(mock.foo.mock_calls, [('', (), {})])
mock = MagicMock()
mock().foo(1, 2, 3, a=4, b=5)
expected = [
('', (), {}), ('().foo', (1, 2, 3), dict(a=4, b=5))
]
self.assertEqual(mock.mock_calls, expected)
self.assertEqual(mock.return_value.foo.mock_calls,
[('', (1, 2, 3), dict(a=4, b=5))])
self.assertEqual(mock.return_value.mock_calls,
[('foo', (1, 2, 3), dict(a=4, b=5))])
mock = MagicMock()
mock().foo.bar().baz()
expected = [
('', (), {}), ('().foo.bar', (), {}),
('().foo.bar().baz', (), {})
]
self.assertEqual(mock.mock_calls, expected)
self.assertEqual(mock().mock_calls,
call.foo.bar().baz().call_list())
for kwargs in dict(), dict(name='bar'):
mock = MagicMock(**kwargs)
int(mock.foo)
expected = [('foo.__int__', (), {})]
self.assertEqual(mock.mock_calls, expected)
mock = MagicMock(**kwargs)
mock.a()()
expected = [('a', (), {}), ('a()', (), {})]
self.assertEqual(mock.mock_calls, expected)
self.assertEqual(mock.a().mock_calls, [call()])
mock = MagicMock(**kwargs)
mock(1)(2)(3)
self.assertEqual(mock.mock_calls, call(1)(2)(3).call_list())
self.assertEqual(mock().mock_calls, call(2)(3).call_list())
self.assertEqual(mock()().mock_calls, call(3).call_list())
mock = MagicMock(**kwargs)
mock(1)(2)(3).a.b.c(4)
self.assertEqual(mock.mock_calls,
call(1)(2)(3).a.b.c(4).call_list())
self.assertEqual(mock().mock_calls,
call(2)(3).a.b.c(4).call_list())
self.assertEqual(mock()().mock_calls,
call(3).a.b.c(4).call_list())
mock = MagicMock(**kwargs)
int(mock().foo.bar().baz())
last_call = ('().foo.bar().baz().__int__', (), {})
self.assertEqual(mock.mock_calls[-1], last_call)
self.assertEqual(mock().mock_calls,
call.foo.bar().baz().__int__().call_list())
self.assertEqual(mock().foo.bar().mock_calls,
call.baz().__int__().call_list())
self.assertEqual(mock().foo.bar().baz.mock_calls,
call().__int__().call_list())
def test_child_mock_call_equal(self):
m = Mock()
result = m()
result.wibble()
# parent looks like this:
self.assertEqual(m.mock_calls, [call(), call().wibble()])
# but child should look like this:
self.assertEqual(result.mock_calls, [call.wibble()])
def test_mock_call_not_equal_leaf(self):
m = Mock()
m.foo().something()
self.assertNotEqual(m.mock_calls[1], call.foo().different())
self.assertEqual(m.mock_calls[0], call.foo())
def test_mock_call_not_equal_non_leaf(self):
m = Mock()
m.foo().bar()
self.assertNotEqual(m.mock_calls[1], call.baz().bar())
self.assertNotEqual(m.mock_calls[0], call.baz())
def test_mock_call_not_equal_non_leaf_params_different(self):
m = Mock()
m.foo(x=1).bar()
# This isn't ideal, but there's no way to fix it without breaking backwards compatibility:
self.assertEqual(m.mock_calls[1], call.foo(x=2).bar())
def test_mock_call_not_equal_non_leaf_attr(self):
m = Mock()
m.foo.bar()
self.assertNotEqual(m.mock_calls[0], call.baz.bar())
def test_mock_call_not_equal_non_leaf_call_versus_attr(self):
m = Mock()
m.foo.bar()
self.assertNotEqual(m.mock_calls[0], call.foo().bar())
def test_mock_call_repr(self):
m = Mock()
m.foo().bar().baz.bob()
self.assertEqual(repr(m.mock_calls[0]), 'call.foo()')
self.assertEqual(repr(m.mock_calls[1]), 'call.foo().bar()')
self.assertEqual(repr(m.mock_calls[2]), 'call.foo().bar().baz.bob()')
def test_subclassing(self):
class Subclass(Mock):
pass
mock = Subclass()
self.assertIsInstance(mock.foo, Subclass)
self.assertIsInstance(mock(), Subclass)
class Subclass(Mock):
def _get_child_mock(self, **kwargs):
return Mock(**kwargs)
mock = Subclass()
self.assertNotIsInstance(mock.foo, Subclass)
self.assertNotIsInstance(mock(), Subclass)
def test_arg_lists(self):
mocks = [
Mock(),
MagicMock(),
NonCallableMock(),
NonCallableMagicMock()
]
def assert_attrs(mock):
names = 'call_args_list', 'method_calls', 'mock_calls'
for name in names:
attr = getattr(mock, name)
self.assertIsInstance(attr, _CallList)
self.assertIsInstance(attr, list)
self.assertEqual(attr, [])
for mock in mocks:
assert_attrs(mock)
if callable(mock):
mock()
mock(1, 2)
mock(a=3)
mock.reset_mock()
assert_attrs(mock)
mock.foo()
mock.foo.bar(1, a=3)
mock.foo(1).bar().baz(3)
mock.reset_mock()
assert_attrs(mock)
def test_call_args_two_tuple(self):
mock = Mock()
mock(1, a=3)
mock(2, b=4)
self.assertEqual(len(mock.call_args), 2)
args, kwargs = mock.call_args
self.assertEqual(args, (2,))
self.assertEqual(kwargs, dict(b=4))
expected_list = [((1,), dict(a=3)), ((2,), dict(b=4))]
for expected, call_args in zip(expected_list, mock.call_args_list):
self.assertEqual(len(call_args), 2)
self.assertEqual(expected[0], call_args[0])
self.assertEqual(expected[1], call_args[1])
def test_side_effect_iterator(self):
mock = Mock(side_effect=iter([1, 2, 3]))
self.assertEqual([mock(), mock(), mock()], [1, 2, 3])
self.assertRaises(StopIteration, mock)
mock = MagicMock(side_effect=['a', 'b', 'c'])
self.assertEqual([mock(), mock(), mock()], ['a', 'b', 'c'])
self.assertRaises(StopIteration, mock)
mock = Mock(side_effect='ghi')
self.assertEqual([mock(), mock(), mock()], ['g', 'h', 'i'])
self.assertRaises(StopIteration, mock)
class Foo(object):
pass
mock = MagicMock(side_effect=Foo)
self.assertIsInstance(mock(), Foo)
mock = Mock(side_effect=Iter())
self.assertEqual([mock(), mock(), mock(), mock()],
['this', 'is', 'an', 'iter'])
self.assertRaises(StopIteration, mock)
def test_side_effect_iterator_exceptions(self):
for Klass in Mock, MagicMock:
iterable = (ValueError, 3, KeyError, 6)
m = Klass(side_effect=iterable)
self.assertRaises(ValueError, m)
self.assertEqual(m(), 3)
self.assertRaises(KeyError, m)
self.assertEqual(m(), 6)
def test_side_effect_setting_iterator(self):
mock = Mock()
mock.side_effect = iter([1, 2, 3])
self.assertEqual([mock(), mock(), mock()], [1, 2, 3])
self.assertRaises(StopIteration, mock)
side_effect = mock.side_effect
self.assertIsInstance(side_effect, type(iter([])))
mock.side_effect = ['a', 'b', 'c']
self.assertEqual([mock(), mock(), mock()], ['a', 'b', 'c'])
self.assertRaises(StopIteration, mock)
side_effect = mock.side_effect
self.assertIsInstance(side_effect, type(iter([])))
this_iter = Iter()
mock.side_effect = this_iter
self.assertEqual([mock(), mock(), mock(), mock()],
['this', 'is', 'an', 'iter'])
self.assertRaises(StopIteration, mock)
self.assertIs(mock.side_effect, this_iter)
def test_side_effect_iterator_default(self):
mock = Mock(return_value=2)
mock.side_effect = iter([1, DEFAULT])
self.assertEqual([mock(), mock()], [1, 2])
def test_assert_has_calls_any_order(self):
mock = Mock()
mock(1, 2)
mock(a=3)
mock(3, 4)
mock(b=6)
mock(b=6)
kalls = [
call(1, 2), ({'a': 3},),
((3, 4),), ((), {'a': 3}),
('', (1, 2)), ('', {'a': 3}),
('', (1, 2), {}), ('', (), {'a': 3})
]
for kall in kalls:
mock.assert_has_calls([kall], any_order=True)
for kall in call(1, '2'), call(b=3), call(), 3, None, 'foo':
self.assertRaises(
AssertionError, mock.assert_has_calls,
[kall], any_order=True
)
kall_lists = [
[call(1, 2), call(b=6)],
[call(3, 4), call(1, 2)],
[call(b=6), call(b=6)],
]
for kall_list in kall_lists:
mock.assert_has_calls(kall_list, any_order=True)
kall_lists = [
[call(b=6), call(b=6), call(b=6)],
[call(1, 2), call(1, 2)],
[call(3, 4), call(1, 2), call(5, 7)],
[call(b=6), call(3, 4), call(b=6), call(1, 2), call(b=6)],
]
for kall_list in kall_lists:
self.assertRaises(
AssertionError, mock.assert_has_calls,
kall_list, any_order=True
)
def test_assert_has_calls(self):
kalls1 = [
call(1, 2), ({'a': 3},),
((3, 4),), call(b=6),
('', (1,), {'b': 6}),
]
kalls2 = [call.foo(), call.bar(1)]
kalls2.extend(call.spam().baz(a=3).call_list())
kalls2.extend(call.bam(set(), foo={}).fish([1]).call_list())
mocks = []
for mock in Mock(), MagicMock():
mock(1, 2)
mock(a=3)
mock(3, 4)
mock(b=6)
mock(1, b=6)
mocks.append((mock, kalls1))
mock = Mock()
mock.foo()
mock.bar(1)
mock.spam().baz(a=3)
mock.bam(set(), foo={}).fish([1])
mocks.append((mock, kalls2))
for mock, kalls in mocks:
for i in range(len(kalls)):
for step in 1, 2, 3:
these = kalls[i:i+step]
mock.assert_has_calls(these)
if len(these) > 1:
self.assertRaises(
AssertionError,
mock.assert_has_calls,
list(reversed(these))
)
def test_assert_has_calls_with_function_spec(self):
def f(a, b, c, d=None):
pass
mock = Mock(spec=f)
mock(1, b=2, c=3)
mock(4, 5, c=6, d=7)
mock(10, 11, c=12)
calls = [
('', (1, 2, 3), {}),
('', (4, 5, 6), {'d': 7}),
((10, 11, 12), {}),
]
mock.assert_has_calls(calls)
mock.assert_has_calls(calls, any_order=True)
mock.assert_has_calls(calls[1:])
mock.assert_has_calls(calls[1:], any_order=True)
mock.assert_has_calls(calls[:-1])
mock.assert_has_calls(calls[:-1], any_order=True)
# Reversed order
calls = list(reversed(calls))
with self.assertRaises(AssertionError):
mock.assert_has_calls(calls)
mock.assert_has_calls(calls, any_order=True)
with self.assertRaises(AssertionError):
mock.assert_has_calls(calls[1:])
mock.assert_has_calls(calls[1:], any_order=True)
with self.assertRaises(AssertionError):
mock.assert_has_calls(calls[:-1])
mock.assert_has_calls(calls[:-1], any_order=True)
def test_assert_any_call(self):
mock = Mock()
mock(1, 2)
mock(a=3)
mock(1, b=6)
mock.assert_any_call(1, 2)
mock.assert_any_call(a=3)
mock.assert_any_call(1, b=6)
self.assertRaises(
AssertionError,
mock.assert_any_call
)
self.assertRaises(
AssertionError,
mock.assert_any_call,
1, 3
)
self.assertRaises(
AssertionError,
mock.assert_any_call,
a=4
)
def test_assert_any_call_with_function_spec(self):
def f(a, b, c, d=None):
pass
mock = Mock(spec=f)
mock(1, b=2, c=3)
mock(4, 5, c=6, d=7)
mock.assert_any_call(1, 2, 3)
mock.assert_any_call(a=1, b=2, c=3)
mock.assert_any_call(4, 5, 6, 7)
mock.assert_any_call(a=4, b=5, c=6, d=7)
self.assertRaises(AssertionError, mock.assert_any_call,
1, b=3, c=2)
# Expected call doesn't match the spec's signature
with self.assertRaises(AssertionError) as cm:
mock.assert_any_call(e=8)
self.assertIsInstance(cm.exception.__cause__, TypeError)
def test_mock_calls_create_autospec(self):
def f(a, b):
pass
obj = Iter()
obj.f = f
funcs = [
create_autospec(f),
create_autospec(obj).f
]
for func in funcs:
func(1, 2)
func(3, 4)
self.assertEqual(
func.mock_calls, [call(1, 2), call(3, 4)]
)
#Issue21222
def test_create_autospec_with_name(self):
m = mock.create_autospec(object(), name='sweet_func')
self.assertIn('sweet_func', repr(m))
#Issue21238
def test_mock_unsafe(self):
m = Mock()
with self.assertRaises(AttributeError):
m.assert_foo_call()
with self.assertRaises(AttributeError):
m.assret_foo_call()
m = Mock(unsafe=True)
m.assert_foo_call()
m.assret_foo_call()
#Issue21262
def test_assert_not_called(self):
m = Mock()
m.hello.assert_not_called()
m.hello()
with self.assertRaises(AssertionError):
m.hello.assert_not_called()
def test_assert_called(self):
m = Mock()
with self.assertRaises(AssertionError):
m.hello.assert_called()
m.hello()
m.hello.assert_called()
m.hello()
m.hello.assert_called()
def test_assert_called_once(self):
m = Mock()
with self.assertRaises(AssertionError):
m.hello.assert_called_once()
m.hello()
m.hello.assert_called_once()
m.hello()
with self.assertRaises(AssertionError):
m.hello.assert_called_once()
#Issue21256 printout of keyword args should be in deterministic order
def test_sorted_call_signature(self):
m = Mock()
m.hello(name='hello', daddy='hero')
text = "call(daddy='hero', name='hello')"
self.assertEqual(repr(m.hello.call_args), text)
#Issue21270 overrides tuple methods for mock.call objects
def test_override_tuple_methods(self):
c = call.count()
i = call.index(132,'hello')
m = Mock()
m.count()
m.index(132,"hello")
self.assertEqual(m.method_calls[0], c)
self.assertEqual(m.method_calls[1], i)
def test_reset_return_sideeffect(self):
m = Mock(return_value=10, side_effect=[2,3])
m.reset_mock(return_value=True, side_effect=True)
self.assertIsInstance(m.return_value, Mock)
self.assertEqual(m.side_effect, None)
def test_reset_return(self):
m = Mock(return_value=10, side_effect=[2,3])
m.reset_mock(return_value=True)
self.assertIsInstance(m.return_value, Mock)
self.assertNotEqual(m.side_effect, None)
def test_reset_sideeffect(self):
m = Mock(return_value=10, side_effect=[2,3])
m.reset_mock(side_effect=True)
self.assertEqual(m.return_value, 10)
self.assertEqual(m.side_effect, None)
def test_mock_add_spec(self):
class _One(object):
one = 1
class _Two(object):
two = 2
class Anything(object):
one = two = three = 'four'
klasses = [
Mock, MagicMock, NonCallableMock, NonCallableMagicMock
]
for Klass in list(klasses):
klasses.append(lambda K=Klass: K(spec=Anything))
klasses.append(lambda K=Klass: K(spec_set=Anything))
for Klass in klasses:
for kwargs in dict(), dict(spec_set=True):
mock = Klass()
#no error
mock.one, mock.two, mock.three
for One, Two in [(_One, _Two), (['one'], ['two'])]:
for kwargs in dict(), dict(spec_set=True):
mock.mock_add_spec(One, **kwargs)
mock.one
self.assertRaises(
AttributeError, getattr, mock, 'two'
)
self.assertRaises(
AttributeError, getattr, mock, 'three'
)
if 'spec_set' in kwargs:
self.assertRaises(
AttributeError, setattr, mock, 'three', None
)
mock.mock_add_spec(Two, **kwargs)
self.assertRaises(
AttributeError, getattr, mock, 'one'
)
mock.two
self.assertRaises(
AttributeError, getattr, mock, 'three'
)
if 'spec_set' in kwargs:
self.assertRaises(
AttributeError, setattr, mock, 'three', None
)
# note that creating a mock, setting an instance attribute, and
# *then* setting a spec doesn't work. Not the intended use case
def test_mock_add_spec_magic_methods(self):
for Klass in MagicMock, NonCallableMagicMock:
mock = Klass()
int(mock)
mock.mock_add_spec(object)
self.assertRaises(TypeError, int, mock)
mock = Klass()
mock['foo']
mock.__int__.return_value =4
mock.mock_add_spec(int)
self.assertEqual(int(mock), 4)
self.assertRaises(TypeError, lambda: mock['foo'])
def test_adding_child_mock(self):
for Klass in NonCallableMock, Mock, MagicMock, NonCallableMagicMock:
mock = Klass()
mock.foo = Mock()
mock.foo()
self.assertEqual(mock.method_calls, [call.foo()])
self.assertEqual(mock.mock_calls, [call.foo()])
mock = Klass()
mock.bar = Mock(name='name')
mock.bar()
self.assertEqual(mock.method_calls, [])
self.assertEqual(mock.mock_calls, [])
# mock with an existing _new_parent but no name
mock = Klass()
mock.baz = MagicMock()()
mock.baz()
self.assertEqual(mock.method_calls, [])
self.assertEqual(mock.mock_calls, [])
def test_adding_return_value_mock(self):
for Klass in Mock, MagicMock:
mock = Klass()
mock.return_value = MagicMock()
mock()()
self.assertEqual(mock.mock_calls, [call(), call()()])
def test_manager_mock(self):
class Foo(object):
one = 'one'
two = 'two'
manager = Mock()
p1 = patch.object(Foo, 'one')
p2 = patch.object(Foo, 'two')
mock_one = p1.start()
self.addCleanup(p1.stop)
mock_two = p2.start()
self.addCleanup(p2.stop)
manager.attach_mock(mock_one, 'one')
manager.attach_mock(mock_two, 'two')
Foo.two()
Foo.one()
self.assertEqual(manager.mock_calls, [call.two(), call.one()])
def test_magic_methods_mock_calls(self):
for Klass in Mock, MagicMock:
m = Klass()
m.__int__ = Mock(return_value=3)
m.__float__ = MagicMock(return_value=3.0)
int(m)
float(m)
self.assertEqual(m.mock_calls, [call.__int__(), call.__float__()])
self.assertEqual(m.method_calls, [])
def test_mock_open_reuse_issue_21750(self):
mocked_open = mock.mock_open(read_data='data')
f1 = mocked_open('a-name')
f1_data = f1.read()
f2 = mocked_open('another-name')
f2_data = f2.read()
self.assertEqual(f1_data, f2_data)
def test_mock_open_write(self):
# Test exception in file writing write()
mock_namedtemp = mock.mock_open(mock.MagicMock(name='JLV'))
with mock.patch('tempfile.NamedTemporaryFile', mock_namedtemp):
mock_filehandle = mock_namedtemp.return_value
mock_write = mock_filehandle.write
mock_write.side_effect = OSError('Test 2 Error')
def attempt():
tempfile.NamedTemporaryFile().write('asd')
self.assertRaises(OSError, attempt)
def test_mock_open_alter_readline(self):
mopen = mock.mock_open(read_data='foo\nbarn')
mopen.return_value.readline.side_effect = lambda *args:'abc'
first = mopen().readline()
second = mopen().readline()
self.assertEqual('abc', first)
self.assertEqual('abc', second)
def test_mock_open_after_eof(self):
# read, readline and readlines should work after end of file.
_open = mock.mock_open(read_data='foo')
h = _open('bar')
h.read()
self.assertEqual('', h.read())
self.assertEqual('', h.read())
self.assertEqual('', h.readline())
self.assertEqual('', h.readline())
self.assertEqual([], h.readlines())
self.assertEqual([], h.readlines())
def test_mock_parents(self):
for Klass in Mock, MagicMock:
m = Klass()
original_repr = repr(m)
m.return_value = m
self.assertIs(m(), m)
self.assertEqual(repr(m), original_repr)
m.reset_mock()
self.assertIs(m(), m)
self.assertEqual(repr(m), original_repr)
m = Klass()
m.b = m.a
self.assertIn("name='mock.a'", repr(m.b))
self.assertIn("name='mock.a'", repr(m.a))
m.reset_mock()
self.assertIn("name='mock.a'", repr(m.b))
self.assertIn("name='mock.a'", repr(m.a))
m = Klass()
original_repr = repr(m)
m.a = m()
m.a.return_value = m
self.assertEqual(repr(m), original_repr)
self.assertEqual(repr(m.a()), original_repr)
def test_attach_mock(self):
classes = Mock, MagicMock, NonCallableMagicMock, NonCallableMock
for Klass in classes:
for Klass2 in classes:
m = Klass()
m2 = Klass2(name='foo')
m.attach_mock(m2, 'bar')
self.assertIs(m.bar, m2)
self.assertIn("name='mock.bar'", repr(m2))
m.bar.baz(1)
self.assertEqual(m.mock_calls, [call.bar.baz(1)])
self.assertEqual(m.method_calls, [call.bar.baz(1)])
def test_attach_mock_return_value(self):
classes = Mock, MagicMock, NonCallableMagicMock, NonCallableMock
for Klass in Mock, MagicMock:
for Klass2 in classes:
m = Klass()
m2 = Klass2(name='foo')
m.attach_mock(m2, 'return_value')
self.assertIs(m(), m2)
self.assertIn("name='mock()'", repr(m2))
m2.foo()
self.assertEqual(m.mock_calls, call().foo().call_list())
def test_attribute_deletion(self):
for mock in (Mock(), MagicMock(), NonCallableMagicMock(),
NonCallableMock()):
self.assertTrue(hasattr(mock, 'm'))
del mock.m
self.assertFalse(hasattr(mock, 'm'))
del mock.f
self.assertFalse(hasattr(mock, 'f'))
self.assertRaises(AttributeError, getattr, mock, 'f')
def test_reset_mock_does_not_raise_on_attr_deletion(self):
# bpo-31177: reset_mock should not raise AttributeError when attributes
# were deleted in a mock instance
mock = Mock()
mock.child = True
del mock.child
mock.reset_mock()
self.assertFalse(hasattr(mock, 'child'))
def test_class_assignable(self):
for mock in Mock(), MagicMock():
self.assertNotIsInstance(mock, int)
mock.__class__ = int
self.assertIsInstance(mock, int)
mock.foo
def test_name_attribute_of_call(self):
# bpo-35357: _Call should not disclose any attributes whose names
# may clash with popular ones (such as ".name")
self.assertIsNotNone(call.name)
self.assertEqual(type(call.name), _Call)
self.assertEqual(type(call.name().name), _Call)
def test_parent_attribute_of_call(self):
# bpo-35357: _Call should not disclose any attributes whose names
# may clash with popular ones (such as ".parent")
self.assertIsNotNone(call.parent)
self.assertEqual(type(call.parent), _Call)
self.assertEqual(type(call.parent().parent), _Call)
if __name__ == '__main__':
unittest.main()
| 56,946 | 1,767 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/testmock/testcallable.py | # Copyright (C) 2007-2012 Michael Foord & the mock team
# E-mail: fuzzyman AT voidspace DOT org DOT uk
# http://www.voidspace.org.uk/python/mock/
import unittest
from unittest.test.testmock.support import is_instance, X, SomeClass
from unittest.mock import (
Mock, MagicMock, NonCallableMagicMock,
NonCallableMock, patch, create_autospec,
CallableMixin
)
class TestCallable(unittest.TestCase):
def assertNotCallable(self, mock):
self.assertTrue(is_instance(mock, NonCallableMagicMock))
self.assertFalse(is_instance(mock, CallableMixin))
def test_non_callable(self):
for mock in NonCallableMagicMock(), NonCallableMock():
self.assertRaises(TypeError, mock)
self.assertFalse(hasattr(mock, '__call__'))
self.assertIn(mock.__class__.__name__, repr(mock))
def test_hierarchy(self):
self.assertTrue(issubclass(MagicMock, Mock))
self.assertTrue(issubclass(NonCallableMagicMock, NonCallableMock))
def test_attributes(self):
one = NonCallableMock()
self.assertTrue(issubclass(type(one.one), Mock))
two = NonCallableMagicMock()
self.assertTrue(issubclass(type(two.two), MagicMock))
def test_subclasses(self):
class MockSub(Mock):
pass
one = MockSub()
self.assertTrue(issubclass(type(one.one), MockSub))
class MagicSub(MagicMock):
pass
two = MagicSub()
self.assertTrue(issubclass(type(two.two), MagicSub))
def test_patch_spec(self):
patcher = patch('%s.X' % __name__, spec=True)
mock = patcher.start()
self.addCleanup(patcher.stop)
instance = mock()
mock.assert_called_once_with()
self.assertNotCallable(instance)
self.assertRaises(TypeError, instance)
def test_patch_spec_set(self):
patcher = patch('%s.X' % __name__, spec_set=True)
mock = patcher.start()
self.addCleanup(patcher.stop)
instance = mock()
mock.assert_called_once_with()
self.assertNotCallable(instance)
self.assertRaises(TypeError, instance)
def test_patch_spec_instance(self):
patcher = patch('%s.X' % __name__, spec=X())
mock = patcher.start()
self.addCleanup(patcher.stop)
self.assertNotCallable(mock)
self.assertRaises(TypeError, mock)
def test_patch_spec_set_instance(self):
patcher = patch('%s.X' % __name__, spec_set=X())
mock = patcher.start()
self.addCleanup(patcher.stop)
self.assertNotCallable(mock)
self.assertRaises(TypeError, mock)
def test_patch_spec_callable_class(self):
class CallableX(X):
def __call__(self):
pass
class Sub(CallableX):
pass
class Multi(SomeClass, Sub):
pass
for arg in 'spec', 'spec_set':
for Klass in CallableX, Sub, Multi:
with patch('%s.X' % __name__, **{arg: Klass}) as mock:
instance = mock()
mock.assert_called_once_with()
self.assertTrue(is_instance(instance, MagicMock))
# inherited spec
self.assertRaises(AttributeError, getattr, instance,
'foobarbaz')
result = instance()
# instance is callable, result has no spec
instance.assert_called_once_with()
result(3, 2, 1)
result.assert_called_once_with(3, 2, 1)
result.foo(3, 2, 1)
result.foo.assert_called_once_with(3, 2, 1)
def test_create_autospec(self):
mock = create_autospec(X)
instance = mock()
self.assertRaises(TypeError, instance)
mock = create_autospec(X())
self.assertRaises(TypeError, mock)
def test_create_autospec_instance(self):
mock = create_autospec(SomeClass, instance=True)
self.assertRaises(TypeError, mock)
mock.wibble()
mock.wibble.assert_called_once_with()
self.assertRaises(TypeError, mock.wibble, 'some', 'args')
if __name__ == "__main__":
unittest.main()
| 4,283 | 152 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/testmock/testmagicmethods.py | import unittest
import sys
from unittest.mock import Mock, MagicMock, _magics
class TestMockingMagicMethods(unittest.TestCase):
def test_deleting_magic_methods(self):
mock = Mock()
self.assertFalse(hasattr(mock, '__getitem__'))
mock.__getitem__ = Mock()
self.assertTrue(hasattr(mock, '__getitem__'))
del mock.__getitem__
self.assertFalse(hasattr(mock, '__getitem__'))
def test_magicmock_del(self):
mock = MagicMock()
# before using getitem
del mock.__getitem__
self.assertRaises(TypeError, lambda: mock['foo'])
mock = MagicMock()
# this time use it first
mock['foo']
del mock.__getitem__
self.assertRaises(TypeError, lambda: mock['foo'])
def test_magic_method_wrapping(self):
mock = Mock()
def f(self, name):
return self, 'fish'
mock.__getitem__ = f
self.assertIsNot(mock.__getitem__, f)
self.assertEqual(mock['foo'], (mock, 'fish'))
self.assertEqual(mock.__getitem__('foo'), (mock, 'fish'))
mock.__getitem__ = mock
self.assertIs(mock.__getitem__, mock)
def test_magic_methods_isolated_between_mocks(self):
mock1 = Mock()
mock2 = Mock()
mock1.__iter__ = Mock(return_value=iter([]))
self.assertEqual(list(mock1), [])
self.assertRaises(TypeError, lambda: list(mock2))
def test_repr(self):
mock = Mock()
self.assertEqual(repr(mock), "<Mock id='%s'>" % id(mock))
mock.__repr__ = lambda s: 'foo'
self.assertEqual(repr(mock), 'foo')
def test_str(self):
mock = Mock()
self.assertEqual(str(mock), object.__str__(mock))
mock.__str__ = lambda s: 'foo'
self.assertEqual(str(mock), 'foo')
def test_dict_methods(self):
mock = Mock()
self.assertRaises(TypeError, lambda: mock['foo'])
def _del():
del mock['foo']
def _set():
mock['foo'] = 3
self.assertRaises(TypeError, _del)
self.assertRaises(TypeError, _set)
_dict = {}
def getitem(s, name):
return _dict[name]
def setitem(s, name, value):
_dict[name] = value
def delitem(s, name):
del _dict[name]
mock.__setitem__ = setitem
mock.__getitem__ = getitem
mock.__delitem__ = delitem
self.assertRaises(KeyError, lambda: mock['foo'])
mock['foo'] = 'bar'
self.assertEqual(_dict, {'foo': 'bar'})
self.assertEqual(mock['foo'], 'bar')
del mock['foo']
self.assertEqual(_dict, {})
def test_numeric(self):
original = mock = Mock()
mock.value = 0
self.assertRaises(TypeError, lambda: mock + 3)
def add(self, other):
mock.value += other
return self
mock.__add__ = add
self.assertEqual(mock + 3, mock)
self.assertEqual(mock.value, 3)
del mock.__add__
def iadd(mock):
mock += 3
self.assertRaises(TypeError, iadd, mock)
mock.__iadd__ = add
mock += 6
self.assertEqual(mock, original)
self.assertEqual(mock.value, 9)
self.assertRaises(TypeError, lambda: 3 + mock)
mock.__radd__ = add
self.assertEqual(7 + mock, mock)
self.assertEqual(mock.value, 16)
def test_division(self):
original = mock = Mock()
mock.value = 32
self.assertRaises(TypeError, lambda: mock / 2)
def truediv(self, other):
mock.value /= other
return self
mock.__truediv__ = truediv
self.assertEqual(mock / 2, mock)
self.assertEqual(mock.value, 16)
del mock.__truediv__
def itruediv(mock):
mock /= 4
self.assertRaises(TypeError, itruediv, mock)
mock.__itruediv__ = truediv
mock /= 8
self.assertEqual(mock, original)
self.assertEqual(mock.value, 2)
self.assertRaises(TypeError, lambda: 8 / mock)
mock.__rtruediv__ = truediv
self.assertEqual(0.5 / mock, mock)
self.assertEqual(mock.value, 4)
def test_hash(self):
mock = Mock()
# test delegation
self.assertEqual(hash(mock), Mock.__hash__(mock))
def _hash(s):
return 3
mock.__hash__ = _hash
self.assertEqual(hash(mock), 3)
def test_nonzero(self):
m = Mock()
self.assertTrue(bool(m))
m.__bool__ = lambda s: False
self.assertFalse(bool(m))
def test_comparison(self):
mock = Mock()
def comp(s, o):
return True
mock.__lt__ = mock.__gt__ = mock.__le__ = mock.__ge__ = comp
self. assertTrue(mock < 3)
self. assertTrue(mock > 3)
self. assertTrue(mock <= 3)
self. assertTrue(mock >= 3)
self.assertRaises(TypeError, lambda: MagicMock() < object())
self.assertRaises(TypeError, lambda: object() < MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() < MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() > object())
self.assertRaises(TypeError, lambda: object() > MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() > MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() <= object())
self.assertRaises(TypeError, lambda: object() <= MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() <= MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() >= object())
self.assertRaises(TypeError, lambda: object() >= MagicMock())
self.assertRaises(TypeError, lambda: MagicMock() >= MagicMock())
def test_equality(self):
for mock in Mock(), MagicMock():
self.assertEqual(mock == mock, True)
self.assertIsInstance(mock == mock, bool)
self.assertEqual(mock != mock, False)
self.assertIsInstance(mock != mock, bool)
self.assertEqual(mock == object(), False)
self.assertEqual(mock != object(), True)
def eq(self, other):
return other == 3
mock.__eq__ = eq
self.assertTrue(mock == 3)
self.assertFalse(mock == 4)
def ne(self, other):
return other == 3
mock.__ne__ = ne
self.assertTrue(mock != 3)
self.assertFalse(mock != 4)
mock = MagicMock()
mock.__eq__.return_value = True
self.assertIsInstance(mock == 3, bool)
self.assertEqual(mock == 3, True)
mock.__ne__.return_value = False
self.assertIsInstance(mock != 3, bool)
self.assertEqual(mock != 3, False)
def test_len_contains_iter(self):
mock = Mock()
self.assertRaises(TypeError, len, mock)
self.assertRaises(TypeError, iter, mock)
self.assertRaises(TypeError, lambda: 'foo' in mock)
mock.__len__ = lambda s: 6
self.assertEqual(len(mock), 6)
mock.__contains__ = lambda s, o: o == 3
self.assertIn(3, mock)
self.assertNotIn(6, mock)
mock.__iter__ = lambda s: iter('foobarbaz')
self.assertEqual(list(mock), list('foobarbaz'))
def test_magicmock(self):
mock = MagicMock()
mock.__iter__.return_value = iter([1, 2, 3])
self.assertEqual(list(mock), [1, 2, 3])
getattr(mock, '__bool__').return_value = False
self.assertFalse(hasattr(mock, '__nonzero__'))
self.assertFalse(bool(mock))
for entry in _magics:
self.assertTrue(hasattr(mock, entry))
self.assertFalse(hasattr(mock, '__imaginery__'))
def test_magic_mock_equality(self):
mock = MagicMock()
self.assertIsInstance(mock == object(), bool)
self.assertIsInstance(mock != object(), bool)
self.assertEqual(mock == object(), False)
self.assertEqual(mock != object(), True)
self.assertEqual(mock == mock, True)
self.assertEqual(mock != mock, False)
def test_magicmock_defaults(self):
mock = MagicMock()
self.assertEqual(int(mock), 1)
self.assertEqual(complex(mock), 1j)
self.assertEqual(float(mock), 1.0)
self.assertNotIn(object(), mock)
self.assertEqual(len(mock), 0)
self.assertEqual(list(mock), [])
self.assertEqual(hash(mock), object.__hash__(mock))
self.assertEqual(str(mock), object.__str__(mock))
self.assertTrue(bool(mock))
# in Python 3 oct and hex use __index__
# so these tests are for __index__ in py3k
self.assertEqual(oct(mock), '0o1')
self.assertEqual(hex(mock), '0x1')
# how to test __sizeof__ ?
def test_magic_methods_and_spec(self):
class Iterable(object):
def __iter__(self):
pass
mock = Mock(spec=Iterable)
self.assertRaises(AttributeError, lambda: mock.__iter__)
mock.__iter__ = Mock(return_value=iter([]))
self.assertEqual(list(mock), [])
class NonIterable(object):
pass
mock = Mock(spec=NonIterable)
self.assertRaises(AttributeError, lambda: mock.__iter__)
def set_int():
mock.__int__ = Mock(return_value=iter([]))
self.assertRaises(AttributeError, set_int)
mock = MagicMock(spec=Iterable)
self.assertEqual(list(mock), [])
self.assertRaises(AttributeError, set_int)
def test_magic_methods_and_spec_set(self):
class Iterable(object):
def __iter__(self):
pass
mock = Mock(spec_set=Iterable)
self.assertRaises(AttributeError, lambda: mock.__iter__)
mock.__iter__ = Mock(return_value=iter([]))
self.assertEqual(list(mock), [])
class NonIterable(object):
pass
mock = Mock(spec_set=NonIterable)
self.assertRaises(AttributeError, lambda: mock.__iter__)
def set_int():
mock.__int__ = Mock(return_value=iter([]))
self.assertRaises(AttributeError, set_int)
mock = MagicMock(spec_set=Iterable)
self.assertEqual(list(mock), [])
self.assertRaises(AttributeError, set_int)
def test_setting_unsupported_magic_method(self):
mock = MagicMock()
def set_setattr():
mock.__setattr__ = lambda self, name: None
self.assertRaisesRegex(AttributeError,
"Attempting to set unsupported magic method '__setattr__'.",
set_setattr
)
def test_attributes_and_return_value(self):
mock = MagicMock()
attr = mock.foo
def _get_type(obj):
# the type of every mock (or magicmock) is a custom subclass
# so the real type is the second in the mro
return type(obj).__mro__[1]
self.assertEqual(_get_type(attr), MagicMock)
returned = mock()
self.assertEqual(_get_type(returned), MagicMock)
def test_magic_methods_are_magic_mocks(self):
mock = MagicMock()
self.assertIsInstance(mock.__getitem__, MagicMock)
mock[1][2].__getitem__.return_value = 3
self.assertEqual(mock[1][2][3], 3)
def test_magic_method_reset_mock(self):
mock = MagicMock()
str(mock)
self.assertTrue(mock.__str__.called)
mock.reset_mock()
self.assertFalse(mock.__str__.called)
def test_dir(self):
# overriding the default implementation
for mock in Mock(), MagicMock():
def _dir(self):
return ['foo']
mock.__dir__ = _dir
self.assertEqual(dir(mock), ['foo'])
@unittest.skipIf('PyPy' in sys.version, "This fails differently on pypy")
def test_bound_methods(self):
m = Mock()
# XXXX should this be an expected failure instead?
# this seems like it should work, but is hard to do without introducing
# other api inconsistencies. Failure message could be better though.
m.__iter__ = [3].__iter__
self.assertRaises(TypeError, iter, m)
def test_magic_method_type(self):
class Foo(MagicMock):
pass
foo = Foo()
self.assertIsInstance(foo.__int__, Foo)
def test_descriptor_from_class(self):
m = MagicMock()
type(m).__str__.return_value = 'foo'
self.assertEqual(str(m), 'foo')
def test_iterable_as_iter_return_value(self):
m = MagicMock()
m.__iter__.return_value = [1, 2, 3]
self.assertEqual(list(m), [1, 2, 3])
self.assertEqual(list(m), [1, 2, 3])
m.__iter__.return_value = iter([4, 5, 6])
self.assertEqual(list(m), [4, 5, 6])
self.assertEqual(list(m), [])
def test_matmul(self):
m = MagicMock()
self.assertIsInstance(m @ 1, MagicMock)
m.__matmul__.return_value = 42
m.__rmatmul__.return_value = 666
m.__imatmul__.return_value = 24
self.assertEqual(m @ 1, 42)
self.assertEqual(1 @ m, 666)
m @= 24
self.assertEqual(m, 24)
def test_divmod_and_rdivmod(self):
m = MagicMock()
self.assertIsInstance(divmod(5, m), MagicMock)
m.__divmod__.return_value = (2, 1)
self.assertEqual(divmod(m, 2), (2, 1))
m = MagicMock()
foo = divmod(2, m)
self.assertIsInstance(foo, MagicMock)
foo_direct = m.__divmod__(2)
self.assertIsInstance(foo_direct, MagicMock)
bar = divmod(m, 2)
self.assertIsInstance(bar, MagicMock)
bar_direct = m.__rdivmod__(2)
self.assertIsInstance(bar_direct, MagicMock)
# http://bugs.python.org/issue23310
# Check if you can change behaviour of magic methods in MagicMock init
def test_magic_in_initialization(self):
m = MagicMock(**{'__str__.return_value': "12"})
self.assertEqual(str(m), "12")
def test_changing_magic_set_in_initialization(self):
m = MagicMock(**{'__str__.return_value': "12"})
m.__str__.return_value = "13"
self.assertEqual(str(m), "13")
m = MagicMock(**{'__str__.return_value': "12"})
m.configure_mock(**{'__str__.return_value': "14"})
self.assertEqual(str(m), "14")
if __name__ == '__main__':
unittest.main()
| 14,412 | 469 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/testmock/testsentinel.py | import unittest
from unittest.mock import sentinel, DEFAULT
class SentinelTest(unittest.TestCase):
def testSentinels(self):
self.assertEqual(sentinel.whatever, sentinel.whatever,
'sentinel not stored')
self.assertNotEqual(sentinel.whatever, sentinel.whateverelse,
'sentinel should be unique')
def testSentinelName(self):
self.assertEqual(str(sentinel.whatever), 'sentinel.whatever',
'sentinel name incorrect')
def testDEFAULT(self):
self.assertIs(DEFAULT, sentinel.DEFAULT)
def testBases(self):
# If this doesn't raise an AttributeError then help(mock) is broken
self.assertRaises(AttributeError, lambda: sentinel.__bases__)
if __name__ == '__main__':
unittest.main()
| 824 | 29 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/testmock/testwith.py | import unittest
from warnings import catch_warnings
from unittest.test.testmock.support import is_instance
from unittest.mock import MagicMock, Mock, patch, sentinel, mock_open, call
something = sentinel.Something
something_else = sentinel.SomethingElse
class WithTest(unittest.TestCase):
def test_with_statement(self):
with patch('%s.something' % __name__, sentinel.Something2):
self.assertEqual(something, sentinel.Something2, "unpatched")
self.assertEqual(something, sentinel.Something)
def test_with_statement_exception(self):
try:
with patch('%s.something' % __name__, sentinel.Something2):
self.assertEqual(something, sentinel.Something2, "unpatched")
raise Exception('pow')
except Exception:
pass
else:
self.fail("patch swallowed exception")
self.assertEqual(something, sentinel.Something)
def test_with_statement_as(self):
with patch('%s.something' % __name__) as mock_something:
self.assertEqual(something, mock_something, "unpatched")
self.assertTrue(is_instance(mock_something, MagicMock),
"patching wrong type")
self.assertEqual(something, sentinel.Something)
def test_patch_object_with_statement(self):
class Foo(object):
something = 'foo'
original = Foo.something
with patch.object(Foo, 'something'):
self.assertNotEqual(Foo.something, original, "unpatched")
self.assertEqual(Foo.something, original)
def test_with_statement_nested(self):
with catch_warnings(record=True):
with patch('%s.something' % __name__) as mock_something, patch('%s.something_else' % __name__) as mock_something_else:
self.assertEqual(something, mock_something, "unpatched")
self.assertEqual(something_else, mock_something_else,
"unpatched")
self.assertEqual(something, sentinel.Something)
self.assertEqual(something_else, sentinel.SomethingElse)
def test_with_statement_specified(self):
with patch('%s.something' % __name__, sentinel.Patched) as mock_something:
self.assertEqual(something, mock_something, "unpatched")
self.assertEqual(mock_something, sentinel.Patched, "wrong patch")
self.assertEqual(something, sentinel.Something)
def testContextManagerMocking(self):
mock = Mock()
mock.__enter__ = Mock()
mock.__exit__ = Mock()
mock.__exit__.return_value = False
with mock as m:
self.assertEqual(m, mock.__enter__.return_value)
mock.__enter__.assert_called_with()
mock.__exit__.assert_called_with(None, None, None)
def test_context_manager_with_magic_mock(self):
mock = MagicMock()
with self.assertRaises(TypeError):
with mock:
'foo' + 3
mock.__enter__.assert_called_with()
self.assertTrue(mock.__exit__.called)
def test_with_statement_same_attribute(self):
with patch('%s.something' % __name__, sentinel.Patched) as mock_something:
self.assertEqual(something, mock_something, "unpatched")
with patch('%s.something' % __name__) as mock_again:
self.assertEqual(something, mock_again, "unpatched")
self.assertEqual(something, mock_something,
"restored with wrong instance")
self.assertEqual(something, sentinel.Something, "not restored")
def test_with_statement_imbricated(self):
with patch('%s.something' % __name__) as mock_something:
self.assertEqual(something, mock_something, "unpatched")
with patch('%s.something_else' % __name__) as mock_something_else:
self.assertEqual(something_else, mock_something_else,
"unpatched")
self.assertEqual(something, sentinel.Something)
self.assertEqual(something_else, sentinel.SomethingElse)
def test_dict_context_manager(self):
foo = {}
with patch.dict(foo, {'a': 'b'}):
self.assertEqual(foo, {'a': 'b'})
self.assertEqual(foo, {})
with self.assertRaises(NameError):
with patch.dict(foo, {'a': 'b'}):
self.assertEqual(foo, {'a': 'b'})
raise NameError('Konrad')
self.assertEqual(foo, {})
class TestMockOpen(unittest.TestCase):
def test_mock_open(self):
mock = mock_open()
with patch('%s.open' % __name__, mock, create=True) as patched:
self.assertIs(patched, mock)
open('foo')
mock.assert_called_once_with('foo')
def test_mock_open_context_manager(self):
mock = mock_open()
handle = mock.return_value
with patch('%s.open' % __name__, mock, create=True):
with open('foo') as f:
f.read()
expected_calls = [call('foo'), call().__enter__(), call().read(),
call().__exit__(None, None, None)]
self.assertEqual(mock.mock_calls, expected_calls)
self.assertIs(f, handle)
def test_mock_open_context_manager_multiple_times(self):
mock = mock_open()
with patch('%s.open' % __name__, mock, create=True):
with open('foo') as f:
f.read()
with open('bar') as f:
f.read()
expected_calls = [
call('foo'), call().__enter__(), call().read(),
call().__exit__(None, None, None),
call('bar'), call().__enter__(), call().read(),
call().__exit__(None, None, None)]
self.assertEqual(mock.mock_calls, expected_calls)
def test_explicit_mock(self):
mock = MagicMock()
mock_open(mock)
with patch('%s.open' % __name__, mock, create=True) as patched:
self.assertIs(patched, mock)
open('foo')
mock.assert_called_once_with('foo')
def test_read_data(self):
mock = mock_open(read_data='foo')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
result = h.read()
self.assertEqual(result, 'foo')
def test_readline_data(self):
# Check that readline will return all the lines from the fake file
mock = mock_open(read_data='foo\nbar\nbaz\n')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
line1 = h.readline()
line2 = h.readline()
line3 = h.readline()
self.assertEqual(line1, 'foo\n')
self.assertEqual(line2, 'bar\n')
self.assertEqual(line3, 'baz\n')
# Check that we properly emulate a file that doesn't end in a newline
mock = mock_open(read_data='foo')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
result = h.readline()
self.assertEqual(result, 'foo')
def test_readlines_data(self):
# Test that emulating a file that ends in a newline character works
mock = mock_open(read_data='foo\nbar\nbaz\n')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
result = h.readlines()
self.assertEqual(result, ['foo\n', 'bar\n', 'baz\n'])
# Test that files without a final newline will also be correctly
# emulated
mock = mock_open(read_data='foo\nbar\nbaz')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
result = h.readlines()
self.assertEqual(result, ['foo\n', 'bar\n', 'baz'])
def test_read_bytes(self):
mock = mock_open(read_data=b'\xc6')
with patch('%s.open' % __name__, mock, create=True):
with open('abc', 'rb') as f:
result = f.read()
self.assertEqual(result, b'\xc6')
def test_readline_bytes(self):
m = mock_open(read_data=b'abc\ndef\nghi\n')
with patch('%s.open' % __name__, m, create=True):
with open('abc', 'rb') as f:
line1 = f.readline()
line2 = f.readline()
line3 = f.readline()
self.assertEqual(line1, b'abc\n')
self.assertEqual(line2, b'def\n')
self.assertEqual(line3, b'ghi\n')
def test_readlines_bytes(self):
m = mock_open(read_data=b'abc\ndef\nghi\n')
with patch('%s.open' % __name__, m, create=True):
with open('abc', 'rb') as f:
result = f.readlines()
self.assertEqual(result, [b'abc\n', b'def\n', b'ghi\n'])
def test_mock_open_read_with_argument(self):
# At one point calling read with an argument was broken
# for mocks returned by mock_open
some_data = 'foo\nbar\nbaz'
mock = mock_open(read_data=some_data)
self.assertEqual(mock().read(10), some_data)
def test_interleaved_reads(self):
# Test that calling read, readline, and readlines pulls data
# sequentially from the data we preload with
mock = mock_open(read_data='foo\nbar\nbaz\n')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
line1 = h.readline()
rest = h.readlines()
self.assertEqual(line1, 'foo\n')
self.assertEqual(rest, ['bar\n', 'baz\n'])
mock = mock_open(read_data='foo\nbar\nbaz\n')
with patch('%s.open' % __name__, mock, create=True):
h = open('bar')
line1 = h.readline()
rest = h.read()
self.assertEqual(line1, 'foo\n')
self.assertEqual(rest, 'bar\nbaz\n')
def test_overriding_return_values(self):
mock = mock_open(read_data='foo')
handle = mock()
handle.read.return_value = 'bar'
handle.readline.return_value = 'bar'
handle.readlines.return_value = ['bar']
self.assertEqual(handle.read(), 'bar')
self.assertEqual(handle.readline(), 'bar')
self.assertEqual(handle.readlines(), ['bar'])
# call repeatedly to check that a StopIteration is not propagated
self.assertEqual(handle.readline(), 'bar')
self.assertEqual(handle.readline(), 'bar')
if __name__ == '__main__':
unittest.main()
| 10,415 | 302 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/unittest/test/testmock/__init__.py | import os
import sys
import unittest
here = os.path.dirname(__file__)
loader = unittest.defaultTestLoader
def load_tests(*args):
suite = unittest.TestSuite()
for fn in os.listdir(here):
if fn.startswith("test") and fn.endswith(".py"):
modname = "unittest.test.testmock." + fn[:-3]
__import__(modname)
module = sys.modules[modname]
suite.addTest(loader.loadTestsFromModule(module))
return suite
| 465 | 18 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/email/encoders.py | # Copyright (C) 2001-2006 Python Software Foundation
# Author: Barry Warsaw
# Contact: [email protected]
"""Encodings and related functions."""
__all__ = [
'encode_7or8bit',
'encode_base64',
'encode_noop',
'encode_quopri',
]
from base64 import encodebytes as _bencode
from quopri import encodestring as _encodestring
def _qencode(s):
enc = _encodestring(s, quotetabs=True)
# Must encode spaces, which quopri.encodestring() doesn't do
return enc.replace(b' ', b'=20')
def encode_base64(msg):
"""Encode the message's payload in Base64.
Also, add an appropriate Content-Transfer-Encoding header.
"""
orig = msg.get_payload(decode=True)
encdata = str(_bencode(orig), 'ascii')
msg.set_payload(encdata)
msg['Content-Transfer-Encoding'] = 'base64'
def encode_quopri(msg):
"""Encode the message's payload in quoted-printable.
Also, add an appropriate Content-Transfer-Encoding header.
"""
orig = msg.get_payload(decode=True)
encdata = _qencode(orig)
msg.set_payload(encdata)
msg['Content-Transfer-Encoding'] = 'quoted-printable'
def encode_7or8bit(msg):
"""Set the Content-Transfer-Encoding header to 7bit or 8bit."""
orig = msg.get_payload(decode=True)
if orig is None:
# There's no payload. For backwards compatibility we use 7bit
msg['Content-Transfer-Encoding'] = '7bit'
return
# We play a trick to make this go fast. If decoding from ASCII succeeds,
# we know the data must be 7bit, otherwise treat it as 8bit.
try:
orig.decode('ascii')
except UnicodeError:
msg['Content-Transfer-Encoding'] = '8bit'
else:
msg['Content-Transfer-Encoding'] = '7bit'
def encode_noop(msg):
"""Do nothing."""
| 1,786 | 70 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/email/_policybase.py | """Policy framework for the email package.
Allows fine grained feature control of how the package parses and emits data.
"""
import abc
from email import header
from email import charset as _charset
from email.utils import _has_surrogates
__all__ = [
'Policy',
'Compat32',
'compat32',
]
class _PolicyBase:
"""Policy Object basic framework.
This class is useless unless subclassed. A subclass should define
class attributes with defaults for any values that are to be
managed by the Policy object. The constructor will then allow
non-default values to be set for these attributes at instance
creation time. The instance will be callable, taking these same
attributes keyword arguments, and returning a new instance
identical to the called instance except for those values changed
by the keyword arguments. Instances may be added, yielding new
instances with any non-default values from the right hand
operand overriding those in the left hand operand. That is,
A + B == A(<non-default values of B>)
The repr of an instance can be used to reconstruct the object
if and only if the repr of the values can be used to reconstruct
those values.
"""
def __init__(self, **kw):
"""Create new Policy, possibly overriding some defaults.
See class docstring for a list of overridable attributes.
"""
for name, value in kw.items():
if hasattr(self, name):
super(_PolicyBase,self).__setattr__(name, value)
else:
raise TypeError(
"{!r} is an invalid keyword argument for {}".format(
name, self.__class__.__name__))
def __repr__(self):
args = [ "{}={!r}".format(name, value)
for name, value in self.__dict__.items() ]
return "{}({})".format(self.__class__.__name__, ', '.join(args))
def clone(self, **kw):
"""Return a new instance with specified attributes changed.
The new instance has the same attribute values as the current object,
except for the changes passed in as keyword arguments.
"""
newpolicy = self.__class__.__new__(self.__class__)
for attr, value in self.__dict__.items():
object.__setattr__(newpolicy, attr, value)
for attr, value in kw.items():
if not hasattr(self, attr):
raise TypeError(
"{!r} is an invalid keyword argument for {}".format(
attr, self.__class__.__name__))
object.__setattr__(newpolicy, attr, value)
return newpolicy
def __setattr__(self, name, value):
if hasattr(self, name):
msg = "{!r} object attribute {!r} is read-only"
else:
msg = "{!r} object has no attribute {!r}"
raise AttributeError(msg.format(self.__class__.__name__, name))
def __add__(self, other):
"""Non-default values from right operand override those from left.
The object returned is a new instance of the subclass.
"""
return self.clone(**other.__dict__)
def _append_doc(doc, added_doc):
doc = doc.rsplit('\n', 1)[0]
added_doc = added_doc.split('\n', 1)[1]
return doc + '\n' + added_doc
def _extend_docstrings(cls):
if cls.__doc__ and cls.__doc__.startswith('+'):
cls.__doc__ = _append_doc(cls.__bases__[0].__doc__, cls.__doc__)
for name, attr in cls.__dict__.items():
if attr.__doc__ and attr.__doc__.startswith('+'):
for c in (c for base in cls.__bases__ for c in base.mro()):
doc = getattr(getattr(c, name), '__doc__')
if doc:
attr.__doc__ = _append_doc(doc, attr.__doc__)
break
return cls
class Policy(_PolicyBase, metaclass=abc.ABCMeta):
r"""Controls for how messages are interpreted and formatted.
Most of the classes and many of the methods in the email package accept
Policy objects as parameters. A Policy object contains a set of values and
functions that control how input is interpreted and how output is rendered.
For example, the parameter 'raise_on_defect' controls whether or not an RFC
violation results in an error being raised or not, while 'max_line_length'
controls the maximum length of output lines when a Message is serialized.
Any valid attribute may be overridden when a Policy is created by passing
it as a keyword argument to the constructor. Policy objects are immutable,
but a new Policy object can be created with only certain values changed by
calling the Policy instance with keyword arguments. Policy objects can
also be added, producing a new Policy object in which the non-default
attributes set in the right hand operand overwrite those specified in the
left operand.
Settable attributes:
raise_on_defect -- If true, then defects should be raised as errors.
Default: False.
linesep -- string containing the value to use as separation
between output lines. Default '\n'.
cte_type -- Type of allowed content transfer encodings
7bit -- ASCII only
8bit -- Content-Transfer-Encoding: 8bit is allowed
Default: 8bit. Also controls the disposition of
(RFC invalid) binary data in headers; see the
documentation of the binary_fold method.
max_line_length -- maximum length of lines, excluding 'linesep',
during serialization. None or 0 means no line
wrapping is done. Default is 78.
mangle_from_ -- a flag that, when True escapes From_ lines in the
body of the message by putting a `>' in front of
them. This is used when the message is being
serialized by a generator. Default: True.
message_factory -- the class to use to create new message objects.
If the value is None, the default is Message.
"""
raise_on_defect = False
linesep = '\n'
cte_type = '8bit'
max_line_length = 78
mangle_from_ = False
message_factory = None
def handle_defect(self, obj, defect):
"""Based on policy, either raise defect or call register_defect.
handle_defect(obj, defect)
defect should be a Defect subclass, but in any case must be an
Exception subclass. obj is the object on which the defect should be
registered if it is not raised. If the raise_on_defect is True, the
defect is raised as an error, otherwise the object and the defect are
passed to register_defect.
This method is intended to be called by parsers that discover defects.
The email package parsers always call it with Defect instances.
"""
if self.raise_on_defect:
raise defect
self.register_defect(obj, defect)
def register_defect(self, obj, defect):
"""Record 'defect' on 'obj'.
Called by handle_defect if raise_on_defect is False. This method is
part of the Policy API so that Policy subclasses can implement custom
defect handling. The default implementation calls the append method of
the defects attribute of obj. The objects used by the email package by
default that get passed to this method will always have a defects
attribute with an append method.
"""
obj.defects.append(defect)
def header_max_count(self, name):
"""Return the maximum allowed number of headers named 'name'.
Called when a header is added to a Message object. If the returned
value is not 0 or None, and there are already a number of headers with
the name 'name' equal to the value returned, a ValueError is raised.
Because the default behavior of Message's __setitem__ is to append the
value to the list of headers, it is easy to create duplicate headers
without realizing it. This method allows certain headers to be limited
in the number of instances of that header that may be added to a
Message programmatically. (The limit is not observed by the parser,
which will faithfully produce as many headers as exist in the message
being parsed.)
The default implementation returns None for all header names.
"""
return None
@abc.abstractmethod
def header_source_parse(self, sourcelines):
"""Given a list of linesep terminated strings constituting the lines of
a single header, return the (name, value) tuple that should be stored
in the model. The input lines should retain their terminating linesep
characters. The lines passed in by the email package may contain
surrogateescaped binary data.
"""
raise NotImplementedError
@abc.abstractmethod
def header_store_parse(self, name, value):
"""Given the header name and the value provided by the application
program, return the (name, value) that should be stored in the model.
"""
raise NotImplementedError
@abc.abstractmethod
def header_fetch_parse(self, name, value):
"""Given the header name and the value from the model, return the value
to be returned to the application program that is requesting that
header. The value passed in by the email package may contain
surrogateescaped binary data if the lines were parsed by a BytesParser.
The returned value should not contain any surrogateescaped data.
"""
raise NotImplementedError
@abc.abstractmethod
def fold(self, name, value):
"""Given the header name and the value from the model, return a string
containing linesep characters that implement the folding of the header
according to the policy controls. The value passed in by the email
package may contain surrogateescaped binary data if the lines were
parsed by a BytesParser. The returned value should not contain any
surrogateescaped data.
"""
raise NotImplementedError
@abc.abstractmethod
def fold_binary(self, name, value):
"""Given the header name and the value from the model, return binary
data containing linesep characters that implement the folding of the
header according to the policy controls. The value passed in by the
email package may contain surrogateescaped binary data.
"""
raise NotImplementedError
@_extend_docstrings
class Compat32(Policy):
"""+
This particular policy is the backward compatibility Policy. It
replicates the behavior of the email package version 5.1.
"""
mangle_from_ = True
def _sanitize_header(self, name, value):
# If the header value contains surrogates, return a Header using
# the unknown-8bit charset to encode the bytes as encoded words.
if not isinstance(value, str):
# Assume it is already a header object
return value
if _has_surrogates(value):
return header.Header(value, charset=_charset.UNKNOWN8BIT,
header_name=name)
else:
return value
def header_source_parse(self, sourcelines):
"""+
The name is parsed as everything up to the ':' and returned unmodified.
The value is determined by stripping leading whitespace off the
remainder of the first line, joining all subsequent lines together, and
stripping any trailing carriage return or linefeed characters.
"""
name, value = sourcelines[0].split(':', 1)
value = value.lstrip(' \t') + ''.join(sourcelines[1:])
return (name, value.rstrip('\r\n'))
def header_store_parse(self, name, value):
"""+
The name and value are returned unmodified.
"""
return (name, value)
def header_fetch_parse(self, name, value):
"""+
If the value contains binary data, it is converted into a Header object
using the unknown-8bit charset. Otherwise it is returned unmodified.
"""
return self._sanitize_header(name, value)
def fold(self, name, value):
"""+
Headers are folded using the Header folding algorithm, which preserves
existing line breaks in the value, and wraps each resulting line to the
max_line_length. Non-ASCII binary data are CTE encoded using the
unknown-8bit charset.
"""
return self._fold(name, value, sanitize=True)
def fold_binary(self, name, value):
"""+
Headers are folded using the Header folding algorithm, which preserves
existing line breaks in the value, and wraps each resulting line to the
max_line_length. If cte_type is 7bit, non-ascii binary data is CTE
encoded using the unknown-8bit charset. Otherwise the original source
header is used, with its existing line breaks and/or binary data.
"""
folded = self._fold(name, value, sanitize=self.cte_type=='7bit')
return folded.encode('ascii', 'surrogateescape')
def _fold(self, name, value, sanitize):
parts = []
parts.append('%s: ' % name)
if isinstance(value, str):
if _has_surrogates(value):
if sanitize:
h = header.Header(value,
charset=_charset.UNKNOWN8BIT,
header_name=name)
else:
# If we have raw 8bit data in a byte string, we have no idea
# what the encoding is. There is no safe way to split this
# string. If it's ascii-subset, then we could do a normal
# ascii split, but if it's multibyte then we could break the
# string. There's no way to know so the least harm seems to
# be to not split the string and risk it being too long.
parts.append(value)
h = None
else:
h = header.Header(value, header_name=name)
else:
# Assume it is a Header-like object.
h = value
if h is not None:
# The Header class interprets a value of None for maxlinelen as the
# default value of 78, as recommended by RFC 2822.
maxlinelen = 0
if self.max_line_length is not None:
maxlinelen = self.max_line_length
parts.append(h.encode(linesep=self.linesep, maxlinelen=maxlinelen))
parts.append(self.linesep)
return ''.join(parts)
compat32 = Compat32()
| 15,073 | 375 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/email/architecture.rst | :mod:`email` Package Architecture
=================================
Overview
--------
The email package consists of three major components:
Model
An object structure that represents an email message, and provides an
API for creating, querying, and modifying a message.
Parser
Takes a sequence of characters or bytes and produces a model of the
email message represented by those characters or bytes.
Generator
Takes a model and turns it into a sequence of characters or bytes. The
sequence can either be intended for human consumption (a printable
unicode string) or bytes suitable for transmission over the wire. In
the latter case all data is properly encoded using the content transfer
encodings specified by the relevant RFCs.
Conceptually the package is organized around the model. The model provides both
"external" APIs intended for use by application programs using the library,
and "internal" APIs intended for use by the Parser and Generator components.
This division is intentionally a bit fuzzy; the API described by this
documentation is all a public, stable API. This allows for an application
with special needs to implement its own parser and/or generator.
In addition to the three major functional components, there is a third key
component to the architecture:
Policy
An object that specifies various behavioral settings and carries
implementations of various behavior-controlling methods.
The Policy framework provides a simple and convenient way to control the
behavior of the library, making it possible for the library to be used in a
very flexible fashion while leveraging the common code required to parse,
represent, and generate message-like objects. For example, in addition to the
default :rfc:`5322` email message policy, we also have a policy that manages
HTTP headers in a fashion compliant with :rfc:`2616`. Individual policy
controls, such as the maximum line length produced by the generator, can also
be controlled individually to meet specialized application requirements.
The Model
---------
The message model is implemented by the :class:`~email.message.Message` class.
The model divides a message into the two fundamental parts discussed by the
RFC: the header section and the body. The `Message` object acts as a
pseudo-dictionary of named headers. Its dictionary interface provides
convenient access to individual headers by name. However, all headers are kept
internally in an ordered list, so that the information about the order of the
headers in the original message is preserved.
The `Message` object also has a `payload` that holds the body. A `payload` can
be one of two things: data, or a list of `Message` objects. The latter is used
to represent a multipart MIME message. Lists can be nested arbitrarily deeply
in order to represent the message, with all terminal leaves having non-list
data payloads.
Message Lifecycle
-----------------
The general lifecycle of a message is:
Creation
A `Message` object can be created by a Parser, or it can be
instantiated as an empty message by an application.
Manipulation
The application may examine one or more headers, and/or the
payload, and it may modify one or more headers and/or
the payload. This may be done on the top level `Message`
object, or on any sub-object.
Finalization
The Model is converted into a unicode or binary stream,
or the model is discarded.
Header Policy Control During Lifecycle
--------------------------------------
One of the major controls exerted by the Policy is the management of headers
during the `Message` lifecycle. Most applications don't need to be aware of
this.
A header enters the model in one of two ways: via a Parser, or by being set to
a specific value by an application program after the Model already exists.
Similarly, a header exits the model in one of two ways: by being serialized by
a Generator, or by being retrieved from a Model by an application program. The
Policy object provides hooks for all four of these pathways.
The model storage for headers is a list of (name, value) tuples.
The Parser identifies headers during parsing, and passes them to the
:meth:`~email.policy.Policy.header_source_parse` method of the Policy. The
result of that method is the (name, value) tuple to be stored in the model.
When an application program supplies a header value (for example, through the
`Message` object `__setitem__` interface), the name and the value are passed to
the :meth:`~email.policy.Policy.header_store_parse` method of the Policy, which
returns the (name, value) tuple to be stored in the model.
When an application program retrieves a header (through any of the dict or list
interfaces of `Message`), the name and value are passed to the
:meth:`~email.policy.Policy.header_fetch_parse` method of the Policy to
obtain the value returned to the application.
When a Generator requests a header during serialization, the name and value are
passed to the :meth:`~email.policy.Policy.fold` method of the Policy, which
returns a string containing line breaks in the appropriate places. The
:meth:`~email.policy.Policy.cte_type` Policy control determines whether or
not Content Transfer Encoding is performed on the data in the header. There is
also a :meth:`~email.policy.Policy.binary_fold` method for use by generators
that produce binary output, which returns the folded header as binary data,
possibly folded at different places than the corresponding string would be.
Handling Binary Data
--------------------
In an ideal world all message data would conform to the RFCs, meaning that the
parser could decode the message into the idealized unicode message that the
sender originally wrote. In the real world, the email package must also be
able to deal with badly formatted messages, including messages containing
non-ASCII characters that either have no indicated character set or are not
valid characters in the indicated character set.
Since email messages are *primarily* text data, and operations on message data
are primarily text operations (except for binary payloads of course), the model
stores all text data as unicode strings. Un-decodable binary inside text
data is handled by using the `surrogateescape` error handler of the ASCII
codec. As with the binary filenames the error handler was introduced to
handle, this allows the email package to "carry" the binary data received
during parsing along until the output stage, at which time it is regenerated
in its original form.
This carried binary data is almost entirely an implementation detail. The one
place where it is visible in the API is in the "internal" API. A Parser must
do the `surrogateescape` encoding of binary input data, and pass that data to
the appropriate Policy method. The "internal" interface used by the Generator
to access header values preserves the `surrogateescaped` bytes. All other
interfaces convert the binary data either back into bytes or into a safe form
(losing information in some cases).
Backward Compatibility
----------------------
The :class:`~email.policy.Policy.Compat32` Policy provides backward
compatibility with version 5.1 of the email package. It does this via the
following implementation of the four+1 Policy methods described above:
header_source_parse
Splits the first line on the colon to obtain the name, discards any spaces
after the colon, and joins the remainder of the line with all of the
remaining lines, preserving the linesep characters to obtain the value.
Trailing carriage return and/or linefeed characters are stripped from the
resulting value string.
header_store_parse
Returns the name and value exactly as received from the application.
header_fetch_parse
If the value contains any `surrogateescaped` binary data, return the value
as a :class:`~email.header.Header` object, using the character set
`unknown-8bit`. Otherwise just returns the value.
fold
Uses :class:`~email.header.Header`'s folding to fold headers in the
same way the email5.1 generator did.
binary_fold
Same as fold, but encodes to 'ascii'.
New Algorithm
-------------
header_source_parse
Same as legacy behavior.
header_store_parse
Same as legacy behavior.
header_fetch_parse
If the value is already a header object, returns it. Otherwise, parses the
value using the new parser, and returns the resulting object as the value.
`surrogateescaped` bytes get turned into unicode unknown character code
points.
fold
Uses the new header folding algorithm, respecting the policy settings.
surrogateescaped bytes are encoded using the ``unknown-8bit`` charset for
``cte_type=7bit`` or ``8bit``. Returns a string.
At some point there will also be a ``cte_type=unicode``, and for that
policy fold will serialize the idealized unicode message with RFC-like
folding, converting any surrogateescaped bytes into the unicode
unknown character glyph.
binary_fold
Uses the new header folding algorithm, respecting the policy settings.
surrogateescaped bytes are encoded using the `unknown-8bit` charset for
``cte_type=7bit``, and get turned back into bytes for ``cte_type=8bit``.
Returns bytes.
At some point there will also be a ``cte_type=unicode``, and for that
policy binary_fold will serialize the message according to :rfc:``5335``.
| 9,561 | 217 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/email/headerregistry.py | """Representing and manipulating email headers via custom objects.
This module provides an implementation of the HeaderRegistry API.
The implementation is designed to flexibly follow RFC5322 rules.
Eventually HeaderRegistry will be a public API, but it isn't yet,
and will probably change some before that happens.
"""
from types import MappingProxyType
from email import utils
from email import errors
from email import _header_value_parser as parser
class Address:
def __init__(self, display_name='', username='', domain='', addr_spec=None):
"""Create an object representing a full email address.
An address can have a 'display_name', a 'username', and a 'domain'. In
addition to specifying the username and domain separately, they may be
specified together by using the addr_spec keyword *instead of* the
username and domain keywords. If an addr_spec string is specified it
must be properly quoted according to RFC 5322 rules; an error will be
raised if it is not.
An Address object has display_name, username, domain, and addr_spec
attributes, all of which are read-only. The addr_spec and the string
value of the object are both quoted according to RFC5322 rules, but
without any Content Transfer Encoding.
"""
inputs = ''.join(filter(None, (display_name, username, domain, addr_spec)))
if '\r' in inputs or '\n' in inputs:
raise ValueError("invalid arguments; address parts cannot contain CR or LF")
# This clause with its potential 'raise' may only happen when an
# application program creates an Address object using an addr_spec
# keyword. The email library code itself must always supply username
# and domain.
if addr_spec is not None:
if username or domain:
raise TypeError("addrspec specified when username and/or "
"domain also specified")
a_s, rest = parser.get_addr_spec(addr_spec)
if rest:
raise ValueError("Invalid addr_spec; only '{}' "
"could be parsed from '{}'".format(
a_s, addr_spec))
if a_s.all_defects:
raise a_s.all_defects[0]
username = a_s.local_part
domain = a_s.domain
self._display_name = display_name
self._username = username
self._domain = domain
@property
def display_name(self):
return self._display_name
@property
def username(self):
return self._username
@property
def domain(self):
return self._domain
@property
def addr_spec(self):
"""The addr_spec (username@domain) portion of the address, quoted
according to RFC 5322 rules, but with no Content Transfer Encoding.
"""
nameset = set(self.username)
if len(nameset) > len(nameset-parser.DOT_ATOM_ENDS):
lp = parser.quote_string(self.username)
else:
lp = self.username
if self.domain:
return lp + '@' + self.domain
if not lp:
return '<>'
return lp
def __repr__(self):
return "{}(display_name={!r}, username={!r}, domain={!r})".format(
self.__class__.__name__,
self.display_name, self.username, self.domain)
def __str__(self):
nameset = set(self.display_name)
if len(nameset) > len(nameset-parser.SPECIALS):
disp = parser.quote_string(self.display_name)
else:
disp = self.display_name
if disp:
addr_spec = '' if self.addr_spec=='<>' else self.addr_spec
return "{} <{}>".format(disp, addr_spec)
return self.addr_spec
def __eq__(self, other):
if type(other) != type(self):
return False
return (self.display_name == other.display_name and
self.username == other.username and
self.domain == other.domain)
class Group:
def __init__(self, display_name=None, addresses=None):
"""Create an object representing an address group.
An address group consists of a display_name followed by colon and a
list of addresses (see Address) terminated by a semi-colon. The Group
is created by specifying a display_name and a possibly empty list of
Address objects. A Group can also be used to represent a single
address that is not in a group, which is convenient when manipulating
lists that are a combination of Groups and individual Addresses. In
this case the display_name should be set to None. In particular, the
string representation of a Group whose display_name is None is the same
as the Address object, if there is one and only one Address object in
the addresses list.
"""
self._display_name = display_name
self._addresses = tuple(addresses) if addresses else tuple()
@property
def display_name(self):
return self._display_name
@property
def addresses(self):
return self._addresses
def __repr__(self):
return "{}(display_name={!r}, addresses={!r}".format(
self.__class__.__name__,
self.display_name, self.addresses)
def __str__(self):
if self.display_name is None and len(self.addresses)==1:
return str(self.addresses[0])
disp = self.display_name
if disp is not None:
nameset = set(disp)
if len(nameset) > len(nameset-parser.SPECIALS):
disp = parser.quote_string(disp)
adrstr = ", ".join(str(x) for x in self.addresses)
adrstr = ' ' + adrstr if adrstr else adrstr
return "{}:{};".format(disp, adrstr)
def __eq__(self, other):
if type(other) != type(self):
return False
return (self.display_name == other.display_name and
self.addresses == other.addresses)
# Header Classes #
class BaseHeader(str):
"""Base class for message headers.
Implements generic behavior and provides tools for subclasses.
A subclass must define a classmethod named 'parse' that takes an unfolded
value string and a dictionary as its arguments. The dictionary will
contain one key, 'defects', initialized to an empty list. After the call
the dictionary must contain two additional keys: parse_tree, set to the
parse tree obtained from parsing the header, and 'decoded', set to the
string value of the idealized representation of the data from the value.
(That is, encoded words are decoded, and values that have canonical
representations are so represented.)
The defects key is intended to collect parsing defects, which the message
parser will subsequently dispose of as appropriate. The parser should not,
insofar as practical, raise any errors. Defects should be added to the
list instead. The standard header parsers register defects for RFC
compliance issues, for obsolete RFC syntax, and for unrecoverable parsing
errors.
The parse method may add additional keys to the dictionary. In this case
the subclass must define an 'init' method, which will be passed the
dictionary as its keyword arguments. The method should use (usually by
setting them as the value of similarly named attributes) and remove all the
extra keys added by its parse method, and then use super to call its parent
class with the remaining arguments and keywords.
The subclass should also make sure that a 'max_count' attribute is defined
that is either None or 1. XXX: need to better define this API.
"""
def __new__(cls, name, value):
kwds = {'defects': []}
cls.parse(value, kwds)
if utils._has_surrogates(kwds['decoded']):
kwds['decoded'] = utils._sanitize(kwds['decoded'])
self = str.__new__(cls, kwds['decoded'])
del kwds['decoded']
self.init(name, **kwds)
return self
def init(self, name, *, parse_tree, defects):
self._name = name
self._parse_tree = parse_tree
self._defects = defects
@property
def name(self):
return self._name
@property
def defects(self):
return tuple(self._defects)
def __reduce__(self):
return (
_reconstruct_header,
(
self.__class__.__name__,
self.__class__.__bases__,
str(self),
),
self.__dict__)
@classmethod
def _reconstruct(cls, value):
return str.__new__(cls, value)
def fold(self, *, policy):
"""Fold header according to policy.
The parsed representation of the header is folded according to
RFC5322 rules, as modified by the policy. If the parse tree
contains surrogateescaped bytes, the bytes are CTE encoded using
the charset 'unknown-8bit".
Any non-ASCII characters in the parse tree are CTE encoded using
charset utf-8. XXX: make this a policy setting.
The returned value is an ASCII-only string possibly containing linesep
characters, and ending with a linesep character. The string includes
the header name and the ': ' separator.
"""
# At some point we need to put fws here iif it was in the source.
header = parser.Header([
parser.HeaderLabel([
parser.ValueTerminal(self.name, 'header-name'),
parser.ValueTerminal(':', 'header-sep')]),
])
if self._parse_tree:
header.append(
parser.CFWSList([parser.WhiteSpaceTerminal(' ', 'fws')]))
header.append(self._parse_tree)
return header.fold(policy=policy)
def _reconstruct_header(cls_name, bases, value):
return type(cls_name, bases, {})._reconstruct(value)
class UnstructuredHeader:
max_count = None
value_parser = staticmethod(parser.get_unstructured)
@classmethod
def parse(cls, value, kwds):
kwds['parse_tree'] = cls.value_parser(value)
kwds['decoded'] = str(kwds['parse_tree'])
class UniqueUnstructuredHeader(UnstructuredHeader):
max_count = 1
class DateHeader:
"""Header whose value consists of a single timestamp.
Provides an additional attribute, datetime, which is either an aware
datetime using a timezone, or a naive datetime if the timezone
in the input string is -0000. Also accepts a datetime as input.
The 'value' attribute is the normalized form of the timestamp,
which means it is the output of format_datetime on the datetime.
"""
max_count = None
# This is used only for folding, not for creating 'decoded'.
value_parser = staticmethod(parser.get_unstructured)
@classmethod
def parse(cls, value, kwds):
if not value:
kwds['defects'].append(errors.HeaderMissingRequiredValue())
kwds['datetime'] = None
kwds['decoded'] = ''
kwds['parse_tree'] = parser.TokenList()
return
if isinstance(value, str):
value = utils.parsedate_to_datetime(value)
kwds['datetime'] = value
kwds['decoded'] = utils.format_datetime(kwds['datetime'])
kwds['parse_tree'] = cls.value_parser(kwds['decoded'])
def init(self, *args, **kw):
self._datetime = kw.pop('datetime')
super().init(*args, **kw)
@property
def datetime(self):
return self._datetime
class UniqueDateHeader(DateHeader):
max_count = 1
class AddressHeader:
max_count = None
@staticmethod
def value_parser(value):
address_list, value = parser.get_address_list(value)
assert not value, 'this should not happen'
return address_list
@classmethod
def parse(cls, value, kwds):
if isinstance(value, str):
# We are translating here from the RFC language (address/mailbox)
# to our API language (group/address).
kwds['parse_tree'] = address_list = cls.value_parser(value)
groups = []
for addr in address_list.addresses:
groups.append(Group(addr.display_name,
[Address(mb.display_name or '',
mb.local_part or '',
mb.domain or '')
for mb in addr.all_mailboxes]))
defects = list(address_list.all_defects)
else:
# Assume it is Address/Group stuff
if not hasattr(value, '__iter__'):
value = [value]
groups = [Group(None, [item]) if not hasattr(item, 'addresses')
else item
for item in value]
defects = []
kwds['groups'] = groups
kwds['defects'] = defects
kwds['decoded'] = ', '.join([str(item) for item in groups])
if 'parse_tree' not in kwds:
kwds['parse_tree'] = cls.value_parser(kwds['decoded'])
def init(self, *args, **kw):
self._groups = tuple(kw.pop('groups'))
self._addresses = None
super().init(*args, **kw)
@property
def groups(self):
return self._groups
@property
def addresses(self):
if self._addresses is None:
self._addresses = tuple([address for group in self._groups
for address in group.addresses])
return self._addresses
class UniqueAddressHeader(AddressHeader):
max_count = 1
class SingleAddressHeader(AddressHeader):
@property
def address(self):
if len(self.addresses)!=1:
raise ValueError(("value of single address header {} is not "
"a single address").format(self.name))
return self.addresses[0]
class UniqueSingleAddressHeader(SingleAddressHeader):
max_count = 1
class MIMEVersionHeader:
max_count = 1
value_parser = staticmethod(parser.parse_mime_version)
@classmethod
def parse(cls, value, kwds):
kwds['parse_tree'] = parse_tree = cls.value_parser(value)
kwds['decoded'] = str(parse_tree)
kwds['defects'].extend(parse_tree.all_defects)
kwds['major'] = None if parse_tree.minor is None else parse_tree.major
kwds['minor'] = parse_tree.minor
if parse_tree.minor is not None:
kwds['version'] = '{}.{}'.format(kwds['major'], kwds['minor'])
else:
kwds['version'] = None
def init(self, *args, **kw):
self._version = kw.pop('version')
self._major = kw.pop('major')
self._minor = kw.pop('minor')
super().init(*args, **kw)
@property
def major(self):
return self._major
@property
def minor(self):
return self._minor
@property
def version(self):
return self._version
class ParameterizedMIMEHeader:
# Mixin that handles the params dict. Must be subclassed and
# a property value_parser for the specific header provided.
max_count = 1
@classmethod
def parse(cls, value, kwds):
kwds['parse_tree'] = parse_tree = cls.value_parser(value)
kwds['decoded'] = str(parse_tree)
kwds['defects'].extend(parse_tree.all_defects)
if parse_tree.params is None:
kwds['params'] = {}
else:
# The MIME RFCs specify that parameter ordering is arbitrary.
kwds['params'] = {utils._sanitize(name).lower():
utils._sanitize(value)
for name, value in parse_tree.params}
def init(self, *args, **kw):
self._params = kw.pop('params')
super().init(*args, **kw)
@property
def params(self):
return MappingProxyType(self._params)
class ContentTypeHeader(ParameterizedMIMEHeader):
value_parser = staticmethod(parser.parse_content_type_header)
def init(self, *args, **kw):
super().init(*args, **kw)
self._maintype = utils._sanitize(self._parse_tree.maintype)
self._subtype = utils._sanitize(self._parse_tree.subtype)
@property
def maintype(self):
return self._maintype
@property
def subtype(self):
return self._subtype
@property
def content_type(self):
return self.maintype + '/' + self.subtype
class ContentDispositionHeader(ParameterizedMIMEHeader):
value_parser = staticmethod(parser.parse_content_disposition_header)
def init(self, *args, **kw):
super().init(*args, **kw)
cd = self._parse_tree.content_disposition
self._content_disposition = cd if cd is None else utils._sanitize(cd)
@property
def content_disposition(self):
return self._content_disposition
class ContentTransferEncodingHeader:
max_count = 1
value_parser = staticmethod(parser.parse_content_transfer_encoding_header)
@classmethod
def parse(cls, value, kwds):
kwds['parse_tree'] = parse_tree = cls.value_parser(value)
kwds['decoded'] = str(parse_tree)
kwds['defects'].extend(parse_tree.all_defects)
def init(self, *args, **kw):
super().init(*args, **kw)
self._cte = utils._sanitize(self._parse_tree.cte)
@property
def cte(self):
return self._cte
# The header factory #
_default_header_map = {
'subject': UniqueUnstructuredHeader,
'date': UniqueDateHeader,
'resent-date': DateHeader,
'orig-date': UniqueDateHeader,
'sender': UniqueSingleAddressHeader,
'resent-sender': SingleAddressHeader,
'to': UniqueAddressHeader,
'resent-to': AddressHeader,
'cc': UniqueAddressHeader,
'resent-cc': AddressHeader,
'bcc': UniqueAddressHeader,
'resent-bcc': AddressHeader,
'from': UniqueAddressHeader,
'resent-from': AddressHeader,
'reply-to': UniqueAddressHeader,
'mime-version': MIMEVersionHeader,
'content-type': ContentTypeHeader,
'content-disposition': ContentDispositionHeader,
'content-transfer-encoding': ContentTransferEncodingHeader,
}
class HeaderRegistry:
"""A header_factory and header registry."""
def __init__(self, base_class=BaseHeader, default_class=UnstructuredHeader,
use_default_map=True):
"""Create a header_factory that works with the Policy API.
base_class is the class that will be the last class in the created
header class's __bases__ list. default_class is the class that will be
used if "name" (see __call__) does not appear in the registry.
use_default_map controls whether or not the default mapping of names to
specialized classes is copied in to the registry when the factory is
created. The default is True.
"""
self.registry = {}
self.base_class = base_class
self.default_class = default_class
if use_default_map:
self.registry.update(_default_header_map)
def map_to_type(self, name, cls):
"""Register cls as the specialized class for handling "name" headers.
"""
self.registry[name.lower()] = cls
def __getitem__(self, name):
cls = self.registry.get(name.lower(), self.default_class)
return type('_'+cls.__name__, (cls, self.base_class), {})
def __call__(self, name, value):
"""Create a header instance for header 'name' from 'value'.
Creates a header instance by creating a specialized class for parsing
and representing the specified header by combining the factory
base_class with a specialized class from the registry or the
default_class, and passing the name and value to the constructed
class's constructor.
"""
return self[name](name, value)
| 20,447 | 595 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/email/generator.py | # Copyright (C) 2001-2010 Python Software Foundation
# Author: Barry Warsaw
# Contact: [email protected]
"""Classes to generate plain text from a message object tree."""
__all__ = ['Generator', 'DecodedGenerator', 'BytesGenerator']
import re
import sys
import time
import random
from copy import deepcopy
from io import StringIO, BytesIO
from email.utils import _has_surrogates
UNDERSCORE = '_'
NL = '\n' # XXX: no longer used by the code below.
NLCRE = re.compile(r'\r\n|\r|\n')
fcre = re.compile(r'^From ', re.MULTILINE)
class Generator:
"""Generates output from a Message object tree.
This basic generator writes the message to the given file object as plain
text.
"""
#
# Public interface
#
def __init__(self, outfp, mangle_from_=None, maxheaderlen=None, *,
policy=None):
"""Create the generator for message flattening.
outfp is the output file-like object for writing the message to. It
must have a write() method.
Optional mangle_from_ is a flag that, when True (the default if policy
is not set), escapes From_ lines in the body of the message by putting
a `>' in front of them.
Optional maxheaderlen specifies the longest length for a non-continued
header. When a header line is longer (in characters, with tabs
expanded to 8 spaces) than maxheaderlen, the header will split as
defined in the Header class. Set maxheaderlen to zero to disable
header wrapping. The default is 78, as recommended (but not required)
by RFC 2822.
The policy keyword specifies a policy object that controls a number of
aspects of the generator's operation. If no policy is specified,
the policy associated with the Message object passed to the
flatten method is used.
"""
if mangle_from_ is None:
mangle_from_ = True if policy is None else policy.mangle_from_
self._fp = outfp
self._mangle_from_ = mangle_from_
self.maxheaderlen = maxheaderlen
self.policy = policy
def write(self, s):
# Just delegate to the file object
self._fp.write(s)
def flatten(self, msg, unixfrom=False, linesep=None):
r"""Print the message object tree rooted at msg to the output file
specified when the Generator instance was created.
unixfrom is a flag that forces the printing of a Unix From_ delimiter
before the first object in the message tree. If the original message
has no From_ delimiter, a `standard' one is crafted. By default, this
is False to inhibit the printing of any From_ delimiter.
Note that for subobjects, no From_ line is printed.
linesep specifies the characters used to indicate a new line in
the output. The default value is determined by the policy specified
when the Generator instance was created or, if none was specified,
from the policy associated with the msg.
"""
# We use the _XXX constants for operating on data that comes directly
# from the msg, and _encoded_XXX constants for operating on data that
# has already been converted (to bytes in the BytesGenerator) and
# inserted into a temporary buffer.
policy = msg.policy if self.policy is None else self.policy
if linesep is not None:
policy = policy.clone(linesep=linesep)
if self.maxheaderlen is not None:
policy = policy.clone(max_line_length=self.maxheaderlen)
self._NL = policy.linesep
self._encoded_NL = self._encode(self._NL)
self._EMPTY = ''
self._encoded_EMPTY = self._encode(self._EMPTY)
# Because we use clone (below) when we recursively process message
# subparts, and because clone uses the computed policy (not None),
# submessages will automatically get set to the computed policy when
# they are processed by this code.
old_gen_policy = self.policy
old_msg_policy = msg.policy
try:
self.policy = policy
msg.policy = policy
if unixfrom:
ufrom = msg.get_unixfrom()
if not ufrom:
ufrom = 'From nobody ' + time.ctime(time.time())
self.write(ufrom + self._NL)
self._write(msg)
finally:
self.policy = old_gen_policy
msg.policy = old_msg_policy
def clone(self, fp):
"""Clone this generator with the exact same options."""
return self.__class__(fp,
self._mangle_from_,
None, # Use policy setting, which we've adjusted
policy=self.policy)
#
# Protected interface - undocumented ;/
#
# Note that we use 'self.write' when what we are writing is coming from
# the source, and self._fp.write when what we are writing is coming from a
# buffer (because the Bytes subclass has already had a chance to transform
# the data in its write method in that case). This is an entirely
# pragmatic split determined by experiment; we could be more general by
# always using write and having the Bytes subclass write method detect when
# it has already transformed the input; but, since this whole thing is a
# hack anyway this seems good enough.
def _new_buffer(self):
# BytesGenerator overrides this to return BytesIO.
return StringIO()
def _encode(self, s):
# BytesGenerator overrides this to encode strings to bytes.
return s
def _write_lines(self, lines):
# We have to transform the line endings.
if not lines:
return
lines = NLCRE.split(lines)
for line in lines[:-1]:
self.write(line)
self.write(self._NL)
if lines[-1]:
self.write(lines[-1])
# XXX logic tells me this else should be needed, but the tests fail
# with it and pass without it. (NLCRE.split ends with a blank element
# if and only if there was a trailing newline.)
#else:
# self.write(self._NL)
def _write(self, msg):
# We can't write the headers yet because of the following scenario:
# say a multipart message includes the boundary string somewhere in
# its body. We'd have to calculate the new boundary /before/ we write
# the headers so that we can write the correct Content-Type:
# parameter.
#
# The way we do this, so as to make the _handle_*() methods simpler,
# is to cache any subpart writes into a buffer. The we write the
# headers and the buffer contents. That way, subpart handlers can
# Do The Right Thing, and can still modify the Content-Type: header if
# necessary.
oldfp = self._fp
try:
self._munge_cte = None
self._fp = sfp = self._new_buffer()
self._dispatch(msg)
finally:
self._fp = oldfp
munge_cte = self._munge_cte
del self._munge_cte
# If we munged the cte, copy the message again and re-fix the CTE.
if munge_cte:
msg = deepcopy(msg)
msg.replace_header('content-transfer-encoding', munge_cte[0])
msg.replace_header('content-type', munge_cte[1])
# Write the headers. First we see if the message object wants to
# handle that itself. If not, we'll do it generically.
meth = getattr(msg, '_write_headers', None)
if meth is None:
self._write_headers(msg)
else:
meth(self)
self._fp.write(sfp.getvalue())
def _dispatch(self, msg):
# Get the Content-Type: for the message, then try to dispatch to
# self._handle_<maintype>_<subtype>(). If there's no handler for the
# full MIME type, then dispatch to self._handle_<maintype>(). If
# that's missing too, then dispatch to self._writeBody().
main = msg.get_content_maintype()
sub = msg.get_content_subtype()
specific = UNDERSCORE.join((main, sub)).replace('-', '_')
meth = getattr(self, '_handle_' + specific, None)
if meth is None:
generic = main.replace('-', '_')
meth = getattr(self, '_handle_' + generic, None)
if meth is None:
meth = self._writeBody
meth(msg)
#
# Default handlers
#
def _write_headers(self, msg):
for h, v in msg.raw_items():
self.write(self.policy.fold(h, v))
# A blank line always separates headers from body
self.write(self._NL)
#
# Handlers for writing types and subtypes
#
def _handle_text(self, msg):
payload = msg.get_payload()
if payload is None:
return
if not isinstance(payload, str):
raise TypeError('string payload expected: %s' % type(payload))
if _has_surrogates(msg._payload):
charset = msg.get_param('charset')
if charset is not None:
# XXX: This copy stuff is an ugly hack to avoid modifying the
# existing message.
msg = deepcopy(msg)
del msg['content-transfer-encoding']
msg.set_payload(payload, charset)
payload = msg.get_payload()
self._munge_cte = (msg['content-transfer-encoding'],
msg['content-type'])
if self._mangle_from_:
payload = fcre.sub('>From ', payload)
self._write_lines(payload)
# Default body handler
_writeBody = _handle_text
def _handle_multipart(self, msg):
# The trick here is to write out each part separately, merge them all
# together, and then make sure that the boundary we've chosen isn't
# present in the payload.
msgtexts = []
subparts = msg.get_payload()
if subparts is None:
subparts = []
elif isinstance(subparts, str):
# e.g. a non-strict parse of a message with no starting boundary.
self.write(subparts)
return
elif not isinstance(subparts, list):
# Scalar payload
subparts = [subparts]
for part in subparts:
s = self._new_buffer()
g = self.clone(s)
g.flatten(part, unixfrom=False, linesep=self._NL)
msgtexts.append(s.getvalue())
# BAW: What about boundaries that are wrapped in double-quotes?
boundary = msg.get_boundary()
if not boundary:
# Create a boundary that doesn't appear in any of the
# message texts.
alltext = self._encoded_NL.join(msgtexts)
boundary = self._make_boundary(alltext)
msg.set_boundary(boundary)
# If there's a preamble, write it out, with a trailing CRLF
if msg.preamble is not None:
if self._mangle_from_:
preamble = fcre.sub('>From ', msg.preamble)
else:
preamble = msg.preamble
self._write_lines(preamble)
self.write(self._NL)
# dash-boundary transport-padding CRLF
self.write('--' + boundary + self._NL)
# body-part
if msgtexts:
self._fp.write(msgtexts.pop(0))
# *encapsulation
# --> delimiter transport-padding
# --> CRLF body-part
for body_part in msgtexts:
# delimiter transport-padding CRLF
self.write(self._NL + '--' + boundary + self._NL)
# body-part
self._fp.write(body_part)
# close-delimiter transport-padding
self.write(self._NL + '--' + boundary + '--' + self._NL)
if msg.epilogue is not None:
if self._mangle_from_:
epilogue = fcre.sub('>From ', msg.epilogue)
else:
epilogue = msg.epilogue
self._write_lines(epilogue)
def _handle_multipart_signed(self, msg):
# The contents of signed parts has to stay unmodified in order to keep
# the signature intact per RFC1847 2.1, so we disable header wrapping.
# RDM: This isn't enough to completely preserve the part, but it helps.
p = self.policy
self.policy = p.clone(max_line_length=0)
try:
self._handle_multipart(msg)
finally:
self.policy = p
def _handle_message_delivery_status(self, msg):
# We can't just write the headers directly to self's file object
# because this will leave an extra newline between the last header
# block and the boundary. Sigh.
blocks = []
for part in msg.get_payload():
s = self._new_buffer()
g = self.clone(s)
g.flatten(part, unixfrom=False, linesep=self._NL)
text = s.getvalue()
lines = text.split(self._encoded_NL)
# Strip off the unnecessary trailing empty line
if lines and lines[-1] == self._encoded_EMPTY:
blocks.append(self._encoded_NL.join(lines[:-1]))
else:
blocks.append(text)
# Now join all the blocks with an empty line. This has the lovely
# effect of separating each block with an empty line, but not adding
# an extra one after the last one.
self._fp.write(self._encoded_NL.join(blocks))
def _handle_message(self, msg):
s = self._new_buffer()
g = self.clone(s)
# The payload of a message/rfc822 part should be a multipart sequence
# of length 1. The zeroth element of the list should be the Message
# object for the subpart. Extract that object, stringify it, and
# write it out.
# Except, it turns out, when it's a string instead, which happens when
# and only when HeaderParser is used on a message of mime type
# message/rfc822. Such messages are generated by, for example,
# Groupwise when forwarding unadorned messages. (Issue 7970.) So
# in that case we just emit the string body.
payload = msg._payload
if isinstance(payload, list):
g.flatten(msg.get_payload(0), unixfrom=False, linesep=self._NL)
payload = s.getvalue()
else:
payload = self._encode(payload)
self._fp.write(payload)
# This used to be a module level function; we use a classmethod for this
# and _compile_re so we can continue to provide the module level function
# for backward compatibility by doing
# _make_boundary = Generator._make_boundary
# at the end of the module. It *is* internal, so we could drop that...
@classmethod
def _make_boundary(cls, text=None):
# Craft a random boundary. If text is given, ensure that the chosen
# boundary doesn't appear in the text.
token = random.randrange(sys.maxsize)
boundary = ('=' * 15) + (_fmt % token) + '=='
if text is None:
return boundary
b = boundary
counter = 0
while True:
cre = cls._compile_re('^--' + re.escape(b) + '(--)?$', re.MULTILINE)
if not cre.search(text):
break
b = boundary + '.' + str(counter)
counter += 1
return b
@classmethod
def _compile_re(cls, s, flags):
return re.compile(s, flags)
class BytesGenerator(Generator):
"""Generates a bytes version of a Message object tree.
Functionally identical to the base Generator except that the output is
bytes and not string. When surrogates were used in the input to encode
bytes, these are decoded back to bytes for output. If the policy has
cte_type set to 7bit, then the message is transformed such that the
non-ASCII bytes are properly content transfer encoded, using the charset
unknown-8bit.
The outfp object must accept bytes in its write method.
"""
def write(self, s):
self._fp.write(s.encode('ascii', 'surrogateescape'))
def _new_buffer(self):
return BytesIO()
def _encode(self, s):
return s.encode('ascii')
def _write_headers(self, msg):
# This is almost the same as the string version, except for handling
# strings with 8bit bytes.
for h, v in msg.raw_items():
self._fp.write(self.policy.fold_binary(h, v))
# A blank line always separates headers from body
self.write(self._NL)
def _handle_text(self, msg):
# If the string has surrogates the original source was bytes, so
# just write it back out.
if msg._payload is None:
return
if _has_surrogates(msg._payload) and not self.policy.cte_type=='7bit':
if self._mangle_from_:
msg._payload = fcre.sub(">From ", msg._payload)
self._write_lines(msg._payload)
else:
super(BytesGenerator,self)._handle_text(msg)
# Default body handler
_writeBody = _handle_text
@classmethod
def _compile_re(cls, s, flags):
return re.compile(s.encode('ascii'), flags)
_FMT = '[Non-text (%(type)s) part of message omitted, filename %(filename)s]'
class DecodedGenerator(Generator):
"""Generates a text representation of a message.
Like the Generator base class, except that non-text parts are substituted
with a format string representing the part.
"""
def __init__(self, outfp, mangle_from_=None, maxheaderlen=None, fmt=None, *,
policy=None):
"""Like Generator.__init__() except that an additional optional
argument is allowed.
Walks through all subparts of a message. If the subpart is of main
type `text', then it prints the decoded payload of the subpart.
Otherwise, fmt is a format string that is used instead of the message
payload. fmt is expanded with the following keywords (in
%(keyword)s format):
type : Full MIME type of the non-text part
maintype : Main MIME type of the non-text part
subtype : Sub-MIME type of the non-text part
filename : Filename of the non-text part
description: Description associated with the non-text part
encoding : Content transfer encoding of the non-text part
The default value for fmt is None, meaning
[Non-text (%(type)s) part of message omitted, filename %(filename)s]
"""
Generator.__init__(self, outfp, mangle_from_, maxheaderlen,
policy=policy)
if fmt is None:
self._fmt = _FMT
else:
self._fmt = fmt
def _dispatch(self, msg):
for part in msg.walk():
maintype = part.get_content_maintype()
if maintype == 'text':
print(part.get_payload(decode=False), file=self)
elif maintype == 'multipart':
# Just skip this
pass
else:
print(self._fmt % {
'type' : part.get_content_type(),
'maintype' : part.get_content_maintype(),
'subtype' : part.get_content_subtype(),
'filename' : part.get_filename('[no filename]'),
'description': part.get('Content-Description',
'[no description]'),
'encoding' : part.get('Content-Transfer-Encoding',
'[no encoding]'),
}, file=self)
# Helper used by Generator._make_boundary
_width = len(repr(sys.maxsize-1))
_fmt = '%%0%dd' % _width
# Backward compatibility
_make_boundary = Generator._make_boundary
| 19,975 | 509 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/email/feedparser.py | # Copyright (C) 2004-2006 Python Software Foundation
# Authors: Baxter, Wouters and Warsaw
# Contact: [email protected]
"""FeedParser - An email feed parser.
The feed parser implements an interface for incrementally parsing an email
message, line by line. This has advantages for certain applications, such as
those reading email messages off a socket.
FeedParser.feed() is the primary interface for pushing new data into the
parser. It returns when there's nothing more it can do with the available
data. When you have no more data to push into the parser, call .close().
This completes the parsing and returns the root message object.
The other advantage of this parser is that it will never raise a parsing
exception. Instead, when it finds something unexpected, it adds a 'defect' to
the current message. Defects are just instances that live on the message
object's .defects attribute.
"""
__all__ = ['FeedParser', 'BytesFeedParser']
import re
from email import errors
from email._policybase import compat32
from collections import deque
from io import StringIO
NLCRE = re.compile(r'\r\n|\r|\n')
NLCRE_bol = re.compile(r'(\r\n|\r|\n)')
NLCRE_eol = re.compile(r'(\r\n|\r|\n)\Z')
NLCRE_crack = re.compile(r'(\r\n|\r|\n)')
# RFC 2822 $3.6.8 Optional fields. ftext is %d33-57 / %d59-126, Any character
# except controls, SP, and ":".
headerRE = re.compile(r'^(From |[\041-\071\073-\176]*:|[\t ])')
EMPTYSTRING = ''
NL = '\n'
NeedMoreData = object()
class BufferedSubFile(object):
"""A file-ish object that can have new data loaded into it.
You can also push and pop line-matching predicates onto a stack. When the
current predicate matches the current line, a false EOF response
(i.e. empty string) is returned instead. This lets the parser adhere to a
simple abstraction -- it parses until EOF closes the current message.
"""
def __init__(self):
# Text stream of the last partial line pushed into this object.
# See issue 22233 for why this is a text stream and not a list.
self._partial = StringIO(newline='')
# A deque of full, pushed lines
self._lines = deque()
# The stack of false-EOF checking predicates.
self._eofstack = []
# A flag indicating whether the file has been closed or not.
self._closed = False
def push_eof_matcher(self, pred):
self._eofstack.append(pred)
def pop_eof_matcher(self):
return self._eofstack.pop()
def close(self):
# Don't forget any trailing partial line.
self._partial.seek(0)
self.pushlines(self._partial.readlines())
self._partial.seek(0)
self._partial.truncate()
self._closed = True
def readline(self):
if not self._lines:
if self._closed:
return ''
return NeedMoreData
# Pop the line off the stack and see if it matches the current
# false-EOF predicate.
line = self._lines.popleft()
# RFC 2046, section 5.1.2 requires us to recognize outer level
# boundaries at any level of inner nesting. Do this, but be sure it's
# in the order of most to least nested.
for ateof in reversed(self._eofstack):
if ateof(line):
# We're at the false EOF. But push the last line back first.
self._lines.appendleft(line)
return ''
return line
def unreadline(self, line):
# Let the consumer push a line back into the buffer.
assert line is not NeedMoreData
self._lines.appendleft(line)
def push(self, data):
"""Push some new data into this object."""
self._partial.write(data)
if '\n' not in data and '\r' not in data:
# No new complete lines, wait for more.
return
# Crack into lines, preserving the linesep characters.
self._partial.seek(0)
parts = self._partial.readlines()
self._partial.seek(0)
self._partial.truncate()
# If the last element of the list does not end in a newline, then treat
# it as a partial line. We only check for '\n' here because a line
# ending with '\r' might be a line that was split in the middle of a
# '\r\n' sequence (see bugs 1555570 and 1721862).
if not parts[-1].endswith('\n'):
self._partial.write(parts.pop())
self.pushlines(parts)
def pushlines(self, lines):
self._lines.extend(lines)
def __iter__(self):
return self
def __next__(self):
line = self.readline()
if line == '':
raise StopIteration
return line
class FeedParser:
"""A feed-style parser of email."""
def __init__(self, _factory=None, *, policy=compat32):
"""_factory is called with no arguments to create a new message obj
The policy keyword specifies a policy object that controls a number of
aspects of the parser's operation. The default policy maintains
backward compatibility.
"""
self.policy = policy
self._old_style_factory = False
if _factory is None:
if policy.message_factory is None:
from email.message import Message
self._factory = Message
else:
self._factory = policy.message_factory
else:
self._factory = _factory
try:
_factory(policy=self.policy)
except TypeError:
# Assume this is an old-style factory
self._old_style_factory = True
self._input = BufferedSubFile()
self._msgstack = []
self._parse = self._parsegen().__next__
self._cur = None
self._last = None
self._headersonly = False
# Non-public interface for supporting Parser's headersonly flag
def _set_headersonly(self):
self._headersonly = True
def feed(self, data):
"""Push more data into the parser."""
self._input.push(data)
self._call_parse()
def _call_parse(self):
try:
self._parse()
except StopIteration:
pass
def close(self):
"""Parse all remaining data and return the root message object."""
self._input.close()
self._call_parse()
root = self._pop_message()
assert not self._msgstack
# Look for final set of defects
if root.get_content_maintype() == 'multipart' \
and not root.is_multipart():
defect = errors.MultipartInvariantViolationDefect()
self.policy.handle_defect(root, defect)
return root
def _new_message(self):
if self._old_style_factory:
msg = self._factory()
else:
msg = self._factory(policy=self.policy)
if self._cur and self._cur.get_content_type() == 'multipart/digest':
msg.set_default_type('message/rfc822')
if self._msgstack:
self._msgstack[-1].attach(msg)
self._msgstack.append(msg)
self._cur = msg
self._last = msg
def _pop_message(self):
retval = self._msgstack.pop()
if self._msgstack:
self._cur = self._msgstack[-1]
else:
self._cur = None
return retval
def _parsegen(self):
# Create a new message and start by parsing headers.
self._new_message()
headers = []
# Collect the headers, searching for a line that doesn't match the RFC
# 2822 header or continuation pattern (including an empty line).
for line in self._input:
if line is NeedMoreData:
yield NeedMoreData
continue
if not headerRE.match(line):
# If we saw the RFC defined header/body separator
# (i.e. newline), just throw it away. Otherwise the line is
# part of the body so push it back.
if not NLCRE.match(line):
defect = errors.MissingHeaderBodySeparatorDefect()
self.policy.handle_defect(self._cur, defect)
self._input.unreadline(line)
break
headers.append(line)
# Done with the headers, so parse them and figure out what we're
# supposed to see in the body of the message.
self._parse_headers(headers)
# Headers-only parsing is a backwards compatibility hack, which was
# necessary in the older parser, which could raise errors. All
# remaining lines in the input are thrown into the message body.
if self._headersonly:
lines = []
while True:
line = self._input.readline()
if line is NeedMoreData:
yield NeedMoreData
continue
if line == '':
break
lines.append(line)
self._cur.set_payload(EMPTYSTRING.join(lines))
return
if self._cur.get_content_type() == 'message/delivery-status':
# message/delivery-status contains blocks of headers separated by
# a blank line. We'll represent each header block as a separate
# nested message object, but the processing is a bit different
# than standard message/* types because there is no body for the
# nested messages. A blank line separates the subparts.
while True:
self._input.push_eof_matcher(NLCRE.match)
for retval in self._parsegen():
if retval is NeedMoreData:
yield NeedMoreData
continue
break
msg = self._pop_message()
# We need to pop the EOF matcher in order to tell if we're at
# the end of the current file, not the end of the last block
# of message headers.
self._input.pop_eof_matcher()
# The input stream must be sitting at the newline or at the
# EOF. We want to see if we're at the end of this subpart, so
# first consume the blank line, then test the next line to see
# if we're at this subpart's EOF.
while True:
line = self._input.readline()
if line is NeedMoreData:
yield NeedMoreData
continue
break
while True:
line = self._input.readline()
if line is NeedMoreData:
yield NeedMoreData
continue
break
if line == '':
break
# Not at EOF so this is a line we're going to need.
self._input.unreadline(line)
return
if self._cur.get_content_maintype() == 'message':
# The message claims to be a message/* type, then what follows is
# another RFC 2822 message.
for retval in self._parsegen():
if retval is NeedMoreData:
yield NeedMoreData
continue
break
self._pop_message()
return
if self._cur.get_content_maintype() == 'multipart':
boundary = self._cur.get_boundary()
if boundary is None:
# The message /claims/ to be a multipart but it has not
# defined a boundary. That's a problem which we'll handle by
# reading everything until the EOF and marking the message as
# defective.
defect = errors.NoBoundaryInMultipartDefect()
self.policy.handle_defect(self._cur, defect)
lines = []
for line in self._input:
if line is NeedMoreData:
yield NeedMoreData
continue
lines.append(line)
self._cur.set_payload(EMPTYSTRING.join(lines))
return
# Make sure a valid content type was specified per RFC 2045:6.4.
if (self._cur.get('content-transfer-encoding', '8bit').lower()
not in ('7bit', '8bit', 'binary')):
defect = errors.InvalidMultipartContentTransferEncodingDefect()
self.policy.handle_defect(self._cur, defect)
# Create a line match predicate which matches the inter-part
# boundary as well as the end-of-multipart boundary. Don't push
# this onto the input stream until we've scanned past the
# preamble.
separator = '--' + boundary
boundaryre = re.compile(
'(?P<sep>' + re.escape(separator) +
r')(?P<end>--)?(?P<ws>[ \t]*)(?P<linesep>\r\n|\r|\n)?$')
capturing_preamble = True
preamble = []
linesep = False
close_boundary_seen = False
while True:
line = self._input.readline()
if line is NeedMoreData:
yield NeedMoreData
continue
if line == '':
break
mo = boundaryre.match(line)
if mo:
# If we're looking at the end boundary, we're done with
# this multipart. If there was a newline at the end of
# the closing boundary, then we need to initialize the
# epilogue with the empty string (see below).
if mo.group('end'):
close_boundary_seen = True
linesep = mo.group('linesep')
break
# We saw an inter-part boundary. Were we in the preamble?
if capturing_preamble:
if preamble:
# According to RFC 2046, the last newline belongs
# to the boundary.
lastline = preamble[-1]
eolmo = NLCRE_eol.search(lastline)
if eolmo:
preamble[-1] = lastline[:-len(eolmo.group(0))]
self._cur.preamble = EMPTYSTRING.join(preamble)
capturing_preamble = False
self._input.unreadline(line)
continue
# We saw a boundary separating two parts. Consume any
# multiple boundary lines that may be following. Our
# interpretation of RFC 2046 BNF grammar does not produce
# body parts within such double boundaries.
while True:
line = self._input.readline()
if line is NeedMoreData:
yield NeedMoreData
continue
mo = boundaryre.match(line)
if not mo:
self._input.unreadline(line)
break
# Recurse to parse this subpart; the input stream points
# at the subpart's first line.
self._input.push_eof_matcher(boundaryre.match)
for retval in self._parsegen():
if retval is NeedMoreData:
yield NeedMoreData
continue
break
# Because of RFC 2046, the newline preceding the boundary
# separator actually belongs to the boundary, not the
# previous subpart's payload (or epilogue if the previous
# part is a multipart).
if self._last.get_content_maintype() == 'multipart':
epilogue = self._last.epilogue
if epilogue == '':
self._last.epilogue = None
elif epilogue is not None:
mo = NLCRE_eol.search(epilogue)
if mo:
end = len(mo.group(0))
self._last.epilogue = epilogue[:-end]
else:
payload = self._last._payload
if isinstance(payload, str):
mo = NLCRE_eol.search(payload)
if mo:
payload = payload[:-len(mo.group(0))]
self._last._payload = payload
self._input.pop_eof_matcher()
self._pop_message()
# Set the multipart up for newline cleansing, which will
# happen if we're in a nested multipart.
self._last = self._cur
else:
# I think we must be in the preamble
assert capturing_preamble
preamble.append(line)
# We've seen either the EOF or the end boundary. If we're still
# capturing the preamble, we never saw the start boundary. Note
# that as a defect and store the captured text as the payload.
if capturing_preamble:
defect = errors.StartBoundaryNotFoundDefect()
self.policy.handle_defect(self._cur, defect)
self._cur.set_payload(EMPTYSTRING.join(preamble))
epilogue = []
for line in self._input:
if line is NeedMoreData:
yield NeedMoreData
continue
self._cur.epilogue = EMPTYSTRING.join(epilogue)
return
# If we're not processing the preamble, then we might have seen
# EOF without seeing that end boundary...that is also a defect.
if not close_boundary_seen:
defect = errors.CloseBoundaryNotFoundDefect()
self.policy.handle_defect(self._cur, defect)
return
# Everything from here to the EOF is epilogue. If the end boundary
# ended in a newline, we'll need to make sure the epilogue isn't
# None
if linesep:
epilogue = ['']
else:
epilogue = []
for line in self._input:
if line is NeedMoreData:
yield NeedMoreData
continue
epilogue.append(line)
# Any CRLF at the front of the epilogue is not technically part of
# the epilogue. Also, watch out for an empty string epilogue,
# which means a single newline.
if epilogue:
firstline = epilogue[0]
bolmo = NLCRE_bol.match(firstline)
if bolmo:
epilogue[0] = firstline[len(bolmo.group(0)):]
self._cur.epilogue = EMPTYSTRING.join(epilogue)
return
# Otherwise, it's some non-multipart type, so the entire rest of the
# file contents becomes the payload.
lines = []
for line in self._input:
if line is NeedMoreData:
yield NeedMoreData
continue
lines.append(line)
self._cur.set_payload(EMPTYSTRING.join(lines))
def _parse_headers(self, lines):
# Passed a list of lines that make up the headers for the current msg
lastheader = ''
lastvalue = []
for lineno, line in enumerate(lines):
# Check for continuation
if line[0] in ' \t':
if not lastheader:
# The first line of the headers was a continuation. This
# is illegal, so let's note the defect, store the illegal
# line, and ignore it for purposes of headers.
defect = errors.FirstHeaderLineIsContinuationDefect(line)
self.policy.handle_defect(self._cur, defect)
continue
lastvalue.append(line)
continue
if lastheader:
self._cur.set_raw(*self.policy.header_source_parse(lastvalue))
lastheader, lastvalue = '', []
# Check for envelope header, i.e. unix-from
if line.startswith('From '):
if lineno == 0:
# Strip off the trailing newline
mo = NLCRE_eol.search(line)
if mo:
line = line[:-len(mo.group(0))]
self._cur.set_unixfrom(line)
continue
elif lineno == len(lines) - 1:
# Something looking like a unix-from at the end - it's
# probably the first line of the body, so push back the
# line and stop.
self._input.unreadline(line)
return
else:
# Weirdly placed unix-from line. Note this as a defect
# and ignore it.
defect = errors.MisplacedEnvelopeHeaderDefect(line)
self._cur.defects.append(defect)
continue
# Split the line on the colon separating field name from value.
# There will always be a colon, because if there wasn't the part of
# the parser that calls us would have started parsing the body.
i = line.find(':')
# If the colon is on the start of the line the header is clearly
# malformed, but we might be able to salvage the rest of the
# message. Track the error but keep going.
if i == 0:
defect = errors.InvalidHeaderDefect("Missing header name.")
self._cur.defects.append(defect)
continue
assert i>0, "_parse_headers fed line with no : and no leading WS"
lastheader = line[:i]
lastvalue = [line]
# Done with all the lines, so handle the last header.
if lastheader:
self._cur.set_raw(*self.policy.header_source_parse(lastvalue))
class BytesFeedParser(FeedParser):
"""Like FeedParser, but feed accepts bytes."""
def feed(self, data):
super().feed(data.decode('ascii', 'surrogateescape'))
| 22,775 | 537 | jart/cosmopolitan | false |
cosmopolitan/third_party/python/Lib/email/quoprimime.py | # Copyright (C) 2001-2006 Python Software Foundation
# Author: Ben Gertzfield
# Contact: [email protected]
"""Quoted-printable content transfer encoding per RFCs 2045-2047.
This module handles the content transfer encoding method defined in RFC 2045
to encode US ASCII-like 8-bit data called `quoted-printable'. It is used to
safely encode text that is in a character set similar to the 7-bit US ASCII
character set, but that includes some 8-bit characters that are normally not
allowed in email bodies or headers.
Quoted-printable is very space-inefficient for encoding binary files; use the
email.base64mime module for that instead.
This module provides an interface to encode and decode both headers and bodies
with quoted-printable encoding.
RFC 2045 defines a method for including character set information in an
`encoded-word' in a header. This method is commonly used for 8-bit real names
in To:/From:/Cc: etc. fields, as well as Subject: lines.
This module does not do the line wrapping or end-of-line character
conversion necessary for proper internationalized headers; it only
does dumb encoding and decoding. To deal with the various line
wrapping issues, use the email.header module.
"""
__all__ = [
'body_decode',
'body_encode',
'body_length',
'decode',
'decodestring',
'header_decode',
'header_encode',
'header_length',
'quote',
'unquote',
]
import re
from string import ascii_letters, digits, hexdigits
CRLF = '\r\n'
NL = '\n'
EMPTYSTRING = ''
# Build a mapping of octets to the expansion of that octet. Since we're only
# going to have 256 of these things, this isn't terribly inefficient
# space-wise. Remember that headers and bodies have different sets of safe
# characters. Initialize both maps with the full expansion, and then override
# the safe bytes with the more compact form.
_QUOPRI_MAP = ['=%02X' % c for c in range(256)]
_QUOPRI_HEADER_MAP = _QUOPRI_MAP[:]
_QUOPRI_BODY_MAP = _QUOPRI_MAP[:]
# Safe header bytes which need no encoding.
for c in b'-!*+/' + ascii_letters.encode('ascii') + digits.encode('ascii'):
_QUOPRI_HEADER_MAP[c] = chr(c)
# Headers have one other special encoding; spaces become underscores.
_QUOPRI_HEADER_MAP[ord(' ')] = '_'
# Safe body bytes which need no encoding.
for c in (b' !"#$%&\'()*+,-./0123456789:;<>'
b'?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`'
b'abcdefghijklmnopqrstuvwxyz{|}~\t'):
_QUOPRI_BODY_MAP[c] = chr(c)
# Helpers
def header_check(octet):
"""Return True if the octet should be escaped with header quopri."""
return chr(octet) != _QUOPRI_HEADER_MAP[octet]
def body_check(octet):
"""Return True if the octet should be escaped with body quopri."""
return chr(octet) != _QUOPRI_BODY_MAP[octet]
def header_length(bytearray):
"""Return a header quoted-printable encoding length.
Note that this does not include any RFC 2047 chrome added by
`header_encode()`.
:param bytearray: An array of bytes (a.k.a. octets).
:return: The length in bytes of the byte array when it is encoded with
quoted-printable for headers.
"""
return sum(len(_QUOPRI_HEADER_MAP[octet]) for octet in bytearray)
def body_length(bytearray):
"""Return a body quoted-printable encoding length.
:param bytearray: An array of bytes (a.k.a. octets).
:return: The length in bytes of the byte array when it is encoded with
quoted-printable for bodies.
"""
return sum(len(_QUOPRI_BODY_MAP[octet]) for octet in bytearray)
def _max_append(L, s, maxlen, extra=''):
if not isinstance(s, str):
s = chr(s)
if not L:
L.append(s.lstrip())
elif len(L[-1]) + len(s) <= maxlen:
L[-1] += extra + s
else:
L.append(s.lstrip())
def unquote(s):
"""Turn a string in the form =AB to the ASCII character with value 0xab"""
return chr(int(s[1:3], 16))
def quote(c):
return _QUOPRI_MAP[ord(c)]
def header_encode(header_bytes, charset='iso-8859-1'):
"""Encode a single header line with quoted-printable (like) encoding.
Defined in RFC 2045, this `Q' encoding is similar to quoted-printable, but
used specifically for email header fields to allow charsets with mostly 7
bit characters (and some 8 bit) to remain more or less readable in non-RFC
2045 aware mail clients.
charset names the character set to use in the RFC 2046 header. It
defaults to iso-8859-1.
"""
# Return empty headers as an empty string.
if not header_bytes:
return ''
# Iterate over every byte, encoding if necessary.
encoded = header_bytes.decode('latin1').translate(_QUOPRI_HEADER_MAP)
# Now add the RFC chrome to each encoded chunk and glue the chunks
# together.
return '=?%s?q?%s?=' % (charset, encoded)
_QUOPRI_BODY_ENCODE_MAP = _QUOPRI_BODY_MAP[:]
for c in b'\r\n':
_QUOPRI_BODY_ENCODE_MAP[c] = chr(c)
def body_encode(body, maxlinelen=76, eol=NL):
"""Encode with quoted-printable, wrapping at maxlinelen characters.
Each line of encoded text will end with eol, which defaults to "\\n". Set
this to "\\r\\n" if you will be using the result of this function directly
in an email.
Each line will be wrapped at, at most, maxlinelen characters before the
eol string (maxlinelen defaults to 76 characters, the maximum value
permitted by RFC 2045). Long lines will have the 'soft line break'
quoted-printable character "=" appended to them, so the decoded text will
be identical to the original text.
The minimum maxlinelen is 4 to have room for a quoted character ("=XX")
followed by a soft line break. Smaller values will generate a
ValueError.
"""
if maxlinelen < 4:
raise ValueError("maxlinelen must be at least 4")
if not body:
return body
# quote special characters
body = body.translate(_QUOPRI_BODY_ENCODE_MAP)
soft_break = '=' + eol
# leave space for the '=' at the end of a line
maxlinelen1 = maxlinelen - 1
encoded_body = []
append = encoded_body.append
for line in body.splitlines():
# break up the line into pieces no longer than maxlinelen - 1
start = 0
laststart = len(line) - 1 - maxlinelen
while start <= laststart:
stop = start + maxlinelen1
# make sure we don't break up an escape sequence
if line[stop - 2] == '=':
append(line[start:stop - 1])
start = stop - 2
elif line[stop - 1] == '=':
append(line[start:stop])
start = stop - 1
else:
append(line[start:stop] + '=')
start = stop
# handle rest of line, special case if line ends in whitespace
if line and line[-1] in ' \t':
room = start - laststart
if room >= 3:
# It's a whitespace character at end-of-line, and we have room
# for the three-character quoted encoding.
q = quote(line[-1])
elif room == 2:
# There's room for the whitespace character and a soft break.
q = line[-1] + soft_break
else:
# There's room only for a soft break. The quoted whitespace
# will be the only content on the subsequent line.
q = soft_break + quote(line[-1])
append(line[start:-1] + q)
else:
append(line[start:])
# add back final newline if present
if body[-1] in CRLF:
append('')
return eol.join(encoded_body)
# BAW: I'm not sure if the intent was for the signature of this function to be
# the same as base64MIME.decode() or not...
def decode(encoded, eol=NL):
"""Decode a quoted-printable string.
Lines are separated with eol, which defaults to \\n.
"""
if not encoded:
return encoded
# BAW: see comment in encode() above. Again, we're building up the
# decoded string with string concatenation, which could be done much more
# efficiently.
decoded = ''
for line in encoded.splitlines():
line = line.rstrip()
if not line:
decoded += eol
continue
i = 0
n = len(line)
while i < n:
c = line[i]
if c != '=':
decoded += c
i += 1
# Otherwise, c == "=". Are we at the end of the line? If so, add
# a soft line break.
elif i+1 == n:
i += 1
continue
# Decode if in form =AB
elif i+2 < n and line[i+1] in hexdigits and line[i+2] in hexdigits:
decoded += unquote(line[i:i+3])
i += 3
# Otherwise, not in form =AB, pass literally
else:
decoded += c
i += 1
if i == n:
decoded += eol
# Special case if original string did not end with eol
if encoded[-1] not in '\r\n' and decoded.endswith(eol):
decoded = decoded[:-1]
return decoded
# For convenience and backwards compatibility w/ standard base64 module
body_decode = decode
decodestring = decode
def _unquote_match(match):
"""Turn a match in the form =AB to the ASCII character with value 0xab"""
s = match.group(0)
return unquote(s)
# Header decoding is done a bit differently
def header_decode(s):
"""Decode a string encoded with RFC 2045 MIME header `Q' encoding.
This function does not parse a full MIME header value encoded with
quoted-printable (like =?iso-8859-1?q?Hello_World?=) -- please use
the high level email.header class for that functionality.
"""
s = s.replace('_', ' ')
return re.sub(r'=[a-fA-F0-9]{2}', _unquote_match, s, flags=re.ASCII)
| 9,858 | 300 | jart/cosmopolitan | false |
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