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""" | |
Re-implementation of find_module and get_frozen_object | |
from the deprecated imp module. | |
""" | |
import os | |
import importlib.util | |
import importlib.machinery | |
from .py34compat import module_from_spec | |
PY_SOURCE = 1 | |
PY_COMPILED = 2 | |
C_EXTENSION = 3 | |
C_BUILTIN = 6 | |
PY_FROZEN = 7 | |
def find_module(module, paths=None): | |
"""Just like 'imp.find_module()', but with package support""" | |
spec = importlib.util.find_spec(module, paths) | |
if spec is None: | |
raise ImportError("Can't find %s" % module) | |
if not spec.has_location and hasattr(spec, 'submodule_search_locations'): | |
spec = importlib.util.spec_from_loader('__init__.py', spec.loader) | |
kind = -1 | |
file = None | |
static = isinstance(spec.loader, type) | |
if spec.origin == 'frozen' or static and issubclass( | |
spec.loader, importlib.machinery.FrozenImporter): | |
kind = PY_FROZEN | |
path = None # imp compabilty | |
suffix = mode = '' # imp compability | |
elif spec.origin == 'built-in' or static and issubclass( | |
spec.loader, importlib.machinery.BuiltinImporter): | |
kind = C_BUILTIN | |
path = None # imp compabilty | |
suffix = mode = '' # imp compability | |
elif spec.has_location: | |
path = spec.origin | |
suffix = os.path.splitext(path)[1] | |
mode = 'r' if suffix in importlib.machinery.SOURCE_SUFFIXES else 'rb' | |
if suffix in importlib.machinery.SOURCE_SUFFIXES: | |
kind = PY_SOURCE | |
elif suffix in importlib.machinery.BYTECODE_SUFFIXES: | |
kind = PY_COMPILED | |
elif suffix in importlib.machinery.EXTENSION_SUFFIXES: | |
kind = C_EXTENSION | |
if kind in {PY_SOURCE, PY_COMPILED}: | |
file = open(path, mode) | |
else: | |
path = None | |
suffix = mode = '' | |
return file, path, (suffix, mode, kind) | |
def get_frozen_object(module, paths=None): | |
spec = importlib.util.find_spec(module, paths) | |
if not spec: | |
raise ImportError("Can't find %s" % module) | |
return spec.loader.get_code(module) | |
def get_module(module, paths, info): | |
spec = importlib.util.find_spec(module, paths) | |
if not spec: | |
raise ImportError("Can't find %s" % module) | |
return module_from_spec(spec) | |