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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 importlib.util import module_from_spec | |
| PY_SOURCE = 1 | |
| PY_COMPILED = 2 | |
| C_EXTENSION = 3 | |
| C_BUILTIN = 6 | |
| PY_FROZEN = 7 | |
| def find_spec(module, paths): | |
| finder = ( | |
| importlib.machinery.PathFinder().find_spec | |
| if isinstance(paths, list) else | |
| importlib.util.find_spec | |
| ) | |
| return finder(module, paths) | |
| def find_module(module, paths=None): | |
| """Just like 'imp.find_module()', but with package support""" | |
| spec = 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 compatibility | |
| elif spec.origin == 'built-in' or static and issubclass( | |
| spec.loader, importlib.machinery.BuiltinImporter): | |
| kind = C_BUILTIN | |
| path = None # imp compabilty | |
| suffix = mode = '' # imp compatibility | |
| 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 = 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 = find_spec(module, paths) | |
| if not spec: | |
| raise ImportError("Can't find %s" % module) | |
| return module_from_spec(spec) | |