89 lines
2.4 KiB
Python
89 lines
2.4 KiB
Python
|
"""
|
||
|
|
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)
|