Spaces:
Running
Running
File size: 13,409 Bytes
dc2106c |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 |
import sys
import re
import os
from configparser import RawConfigParser
__all__ = ['FormatError', 'PkgNotFound', 'LibraryInfo', 'VariableSet',
'read_config', 'parse_flags']
_VAR = re.compile(r'\$\{([a-zA-Z0-9_-]+)\}')
class FormatError(IOError):
"""
Exception thrown when there is a problem parsing a configuration file.
"""
def __init__(self, msg):
self.msg = msg
def __str__(self):
return self.msg
class PkgNotFound(IOError):
"""Exception raised when a package can not be located."""
def __init__(self, msg):
self.msg = msg
def __str__(self):
return self.msg
def parse_flags(line):
"""
Parse a line from a config file containing compile flags.
Parameters
----------
line : str
A single line containing one or more compile flags.
Returns
-------
d : dict
Dictionary of parsed flags, split into relevant categories.
These categories are the keys of `d`:
* 'include_dirs'
* 'library_dirs'
* 'libraries'
* 'macros'
* 'ignored'
"""
d = {'include_dirs': [], 'library_dirs': [], 'libraries': [],
'macros': [], 'ignored': []}
flags = (' ' + line).split(' -')
for flag in flags:
flag = '-' + flag
if len(flag) > 0:
if flag.startswith('-I'):
d['include_dirs'].append(flag[2:].strip())
elif flag.startswith('-L'):
d['library_dirs'].append(flag[2:].strip())
elif flag.startswith('-l'):
d['libraries'].append(flag[2:].strip())
elif flag.startswith('-D'):
d['macros'].append(flag[2:].strip())
else:
d['ignored'].append(flag)
return d
def _escape_backslash(val):
return val.replace('\\', '\\\\')
class LibraryInfo:
"""
Object containing build information about a library.
Parameters
----------
name : str
The library name.
description : str
Description of the library.
version : str
Version string.
sections : dict
The sections of the configuration file for the library. The keys are
the section headers, the values the text under each header.
vars : class instance
A `VariableSet` instance, which contains ``(name, value)`` pairs for
variables defined in the configuration file for the library.
requires : sequence, optional
The required libraries for the library to be installed.
Notes
-----
All input parameters (except "sections" which is a method) are available as
attributes of the same name.
"""
def __init__(self, name, description, version, sections, vars, requires=None):
self.name = name
self.description = description
if requires:
self.requires = requires
else:
self.requires = []
self.version = version
self._sections = sections
self.vars = vars
def sections(self):
"""
Return the section headers of the config file.
Parameters
----------
None
Returns
-------
keys : list of str
The list of section headers.
"""
return list(self._sections.keys())
def cflags(self, section="default"):
val = self.vars.interpolate(self._sections[section]['cflags'])
return _escape_backslash(val)
def libs(self, section="default"):
val = self.vars.interpolate(self._sections[section]['libs'])
return _escape_backslash(val)
def __str__(self):
m = ['Name: %s' % self.name, 'Description: %s' % self.description]
if self.requires:
m.append('Requires:')
else:
m.append('Requires: %s' % ",".join(self.requires))
m.append('Version: %s' % self.version)
return "\n".join(m)
class VariableSet:
"""
Container object for the variables defined in a config file.
`VariableSet` can be used as a plain dictionary, with the variable names
as keys.
Parameters
----------
d : dict
Dict of items in the "variables" section of the configuration file.
"""
def __init__(self, d):
self._raw_data = dict([(k, v) for k, v in d.items()])
self._re = {}
self._re_sub = {}
self._init_parse()
def _init_parse(self):
for k, v in self._raw_data.items():
self._init_parse_var(k, v)
def _init_parse_var(self, name, value):
self._re[name] = re.compile(r'\$\{%s\}' % name)
self._re_sub[name] = value
def interpolate(self, value):
# Brute force: we keep interpolating until there is no '${var}' anymore
# or until interpolated string is equal to input string
def _interpolate(value):
for k in self._re.keys():
value = self._re[k].sub(self._re_sub[k], value)
return value
while _VAR.search(value):
nvalue = _interpolate(value)
if nvalue == value:
break
value = nvalue
return value
def variables(self):
"""
Return the list of variable names.
Parameters
----------
None
Returns
-------
names : list of str
The names of all variables in the `VariableSet` instance.
"""
return list(self._raw_data.keys())
# Emulate a dict to set/get variables values
def __getitem__(self, name):
return self._raw_data[name]
def __setitem__(self, name, value):
self._raw_data[name] = value
self._init_parse_var(name, value)
def parse_meta(config):
if not config.has_section('meta'):
raise FormatError("No meta section found !")
d = dict(config.items('meta'))
for k in ['name', 'description', 'version']:
if not k in d:
raise FormatError("Option %s (section [meta]) is mandatory, "
"but not found" % k)
if not 'requires' in d:
d['requires'] = []
return d
def parse_variables(config):
if not config.has_section('variables'):
raise FormatError("No variables section found !")
d = {}
for name, value in config.items("variables"):
d[name] = value
return VariableSet(d)
def parse_sections(config):
return meta_d, r
def pkg_to_filename(pkg_name):
return "%s.ini" % pkg_name
def parse_config(filename, dirs=None):
if dirs:
filenames = [os.path.join(d, filename) for d in dirs]
else:
filenames = [filename]
config = RawConfigParser()
n = config.read(filenames)
if not len(n) >= 1:
raise PkgNotFound("Could not find file(s) %s" % str(filenames))
# Parse meta and variables sections
meta = parse_meta(config)
vars = {}
if config.has_section('variables'):
for name, value in config.items("variables"):
vars[name] = _escape_backslash(value)
# Parse "normal" sections
secs = [s for s in config.sections() if not s in ['meta', 'variables']]
sections = {}
requires = {}
for s in secs:
d = {}
if config.has_option(s, "requires"):
requires[s] = config.get(s, 'requires')
for name, value in config.items(s):
d[name] = value
sections[s] = d
return meta, vars, sections, requires
def _read_config_imp(filenames, dirs=None):
def _read_config(f):
meta, vars, sections, reqs = parse_config(f, dirs)
# recursively add sections and variables of required libraries
for rname, rvalue in reqs.items():
nmeta, nvars, nsections, nreqs = _read_config(pkg_to_filename(rvalue))
# Update var dict for variables not in 'top' config file
for k, v in nvars.items():
if not k in vars:
vars[k] = v
# Update sec dict
for oname, ovalue in nsections[rname].items():
if ovalue:
sections[rname][oname] += ' %s' % ovalue
return meta, vars, sections, reqs
meta, vars, sections, reqs = _read_config(filenames)
# FIXME: document this. If pkgname is defined in the variables section, and
# there is no pkgdir variable defined, pkgdir is automatically defined to
# the path of pkgname. This requires the package to be imported to work
if not 'pkgdir' in vars and "pkgname" in vars:
pkgname = vars["pkgname"]
if not pkgname in sys.modules:
raise ValueError("You should import %s to get information on %s" %
(pkgname, meta["name"]))
mod = sys.modules[pkgname]
vars["pkgdir"] = _escape_backslash(os.path.dirname(mod.__file__))
return LibraryInfo(name=meta["name"], description=meta["description"],
version=meta["version"], sections=sections, vars=VariableSet(vars))
# Trivial cache to cache LibraryInfo instances creation. To be really
# efficient, the cache should be handled in read_config, since a same file can
# be parsed many time outside LibraryInfo creation, but I doubt this will be a
# problem in practice
_CACHE = {}
def read_config(pkgname, dirs=None):
"""
Return library info for a package from its configuration file.
Parameters
----------
pkgname : str
Name of the package (should match the name of the .ini file, without
the extension, e.g. foo for the file foo.ini).
dirs : sequence, optional
If given, should be a sequence of directories - usually including
the NumPy base directory - where to look for npy-pkg-config files.
Returns
-------
pkginfo : class instance
The `LibraryInfo` instance containing the build information.
Raises
------
PkgNotFound
If the package is not found.
See Also
--------
misc_util.get_info, misc_util.get_pkg_info
Examples
--------
>>> npymath_info = np.distutils.npy_pkg_config.read_config('npymath')
>>> type(npymath_info)
<class 'numpy.distutils.npy_pkg_config.LibraryInfo'>
>>> print(npymath_info)
Name: npymath
Description: Portable, core math library implementing C99 standard
Requires:
Version: 0.1 #random
"""
try:
return _CACHE[pkgname]
except KeyError:
v = _read_config_imp(pkg_to_filename(pkgname), dirs)
_CACHE[pkgname] = v
return v
# TODO:
# - implements version comparison (modversion + atleast)
# pkg-config simple emulator - useful for debugging, and maybe later to query
# the system
if __name__ == '__main__':
from optparse import OptionParser
import glob
parser = OptionParser()
parser.add_option("--cflags", dest="cflags", action="store_true",
help="output all preprocessor and compiler flags")
parser.add_option("--libs", dest="libs", action="store_true",
help="output all linker flags")
parser.add_option("--use-section", dest="section",
help="use this section instead of default for options")
parser.add_option("--version", dest="version", action="store_true",
help="output version")
parser.add_option("--atleast-version", dest="min_version",
help="Minimal version")
parser.add_option("--list-all", dest="list_all", action="store_true",
help="Minimal version")
parser.add_option("--define-variable", dest="define_variable",
help="Replace variable with the given value")
(options, args) = parser.parse_args(sys.argv)
if len(args) < 2:
raise ValueError("Expect package name on the command line:")
if options.list_all:
files = glob.glob("*.ini")
for f in files:
info = read_config(f)
print("%s\t%s - %s" % (info.name, info.name, info.description))
pkg_name = args[1]
d = os.environ.get('NPY_PKG_CONFIG_PATH')
if d:
info = read_config(pkg_name, ['numpy/core/lib/npy-pkg-config', '.', d])
else:
info = read_config(pkg_name, ['numpy/core/lib/npy-pkg-config', '.'])
if options.section:
section = options.section
else:
section = "default"
if options.define_variable:
m = re.search(r'([\S]+)=([\S]+)', options.define_variable)
if not m:
raise ValueError("--define-variable option should be of "
"the form --define-variable=foo=bar")
else:
name = m.group(1)
value = m.group(2)
info.vars[name] = value
if options.cflags:
print(info.cflags(section))
if options.libs:
print(info.libs(section))
if options.version:
print(info.version)
if options.min_version:
print(info.version >= options.min_version)
|