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| """ | |
| certifi.py | |
| ~~~~~~~~~~ | |
| This module returns the installation location of cacert.pem or its contents. | |
| """ | |
| import sys | |
| if sys.version_info >= (3, 11): | |
| from importlib.resources import as_file, files | |
| _CACERT_CTX = None | |
| _CACERT_PATH = None | |
| def where() -> str: | |
| # This is slightly terrible, but we want to delay extracting the file | |
| # in cases where we're inside of a zipimport situation until someone | |
| # actually calls where(), but we don't want to re-extract the file | |
| # on every call of where(), so we'll do it once then store it in a | |
| # global variable. | |
| global _CACERT_CTX | |
| global _CACERT_PATH | |
| if _CACERT_PATH is None: | |
| # This is slightly janky, the importlib.resources API wants you to | |
| # manage the cleanup of this file, so it doesn't actually return a | |
| # path, it returns a context manager that will give you the path | |
| # when you enter it and will do any cleanup when you leave it. In | |
| # the common case of not needing a temporary file, it will just | |
| # return the file system location and the __exit__() is a no-op. | |
| # | |
| # We also have to hold onto the actual context manager, because | |
| # it will do the cleanup whenever it gets garbage collected, so | |
| # we will also store that at the global level as well. | |
| _CACERT_CTX = as_file(files("certifi").joinpath("cacert.pem")) | |
| _CACERT_PATH = str(_CACERT_CTX.__enter__()) | |
| return _CACERT_PATH | |
| def contents() -> str: | |
| return files("certifi").joinpath("cacert.pem").read_text(encoding="ascii") | |
| elif sys.version_info >= (3, 7): | |
| from importlib.resources import path as get_path, read_text | |
| _CACERT_CTX = None | |
| _CACERT_PATH = None | |
| def where() -> str: | |
| # This is slightly terrible, but we want to delay extracting the | |
| # file in cases where we're inside of a zipimport situation until | |
| # someone actually calls where(), but we don't want to re-extract | |
| # the file on every call of where(), so we'll do it once then store | |
| # it in a global variable. | |
| global _CACERT_CTX | |
| global _CACERT_PATH | |
| if _CACERT_PATH is None: | |
| # This is slightly janky, the importlib.resources API wants you | |
| # to manage the cleanup of this file, so it doesn't actually | |
| # return a path, it returns a context manager that will give | |
| # you the path when you enter it and will do any cleanup when | |
| # you leave it. In the common case of not needing a temporary | |
| # file, it will just return the file system location and the | |
| # __exit__() is a no-op. | |
| # | |
| # We also have to hold onto the actual context manager, because | |
| # it will do the cleanup whenever it gets garbage collected, so | |
| # we will also store that at the global level as well. | |
| _CACERT_CTX = get_path("certifi", "cacert.pem") | |
| _CACERT_PATH = str(_CACERT_CTX.__enter__()) | |
| return _CACERT_PATH | |
| def contents() -> str: | |
| return read_text("certifi", "cacert.pem", encoding="ascii") | |
| else: | |
| import os | |
| import types | |
| from typing import Union | |
| Package = Union[types.ModuleType, str] | |
| Resource = Union[str, "os.PathLike"] | |
| # This fallback will work for Python versions prior to 3.7 that lack the | |
| # importlib.resources module but relies on the existing `where` function | |
| # so won't address issues with environments like PyOxidizer that don't set | |
| # __file__ on modules. | |
| def read_text( | |
| package: Package, | |
| resource: Resource, | |
| encoding: str = 'utf-8', | |
| errors: str = 'strict' | |
| ) -> str: | |
| with open(where(), encoding=encoding) as data: | |
| return data.read() | |
| # If we don't have importlib.resources, then we will just do the old logic | |
| # of assuming we're on the filesystem and munge the path directly. | |
| def where() -> str: | |
| f = os.path.dirname(__file__) | |
| return os.path.join(f, "cacert.pem") | |
| def contents() -> str: | |
| return read_text("certifi", "cacert.pem", encoding="ascii") | |