| | """ |
| | Re-implementation of find_module and get_frozen_object |
| | from the deprecated imp module. |
| | """ |
| |
|
| | import importlib.machinery |
| | import importlib.util |
| | import os |
| | import tokenize |
| | 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(f"Can't find {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 |
| | suffix = mode = '' |
| | elif ( |
| | spec.origin == 'built-in' |
| | or static |
| | and issubclass(spec.loader, importlib.machinery.BuiltinImporter) |
| | ): |
| | kind = C_BUILTIN |
| | path = None |
| | suffix = mode = '' |
| | 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 |
| | file = tokenize.open(path) |
| | elif suffix in importlib.machinery.BYTECODE_SUFFIXES: |
| | kind = PY_COMPILED |
| | file = open(path, 'rb') |
| | elif suffix in importlib.machinery.EXTENSION_SUFFIXES: |
| | kind = C_EXTENSION |
| |
|
| | 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(f"Can't find {module}") |
| | return spec.loader.get_code(module) |
| |
|
| |
|
| | def get_module(module, paths, info): |
| | spec = find_spec(module, paths) |
| | if not spec: |
| | raise ImportError(f"Can't find {module}") |
| | return module_from_spec(spec) |
| |
|
