TSfdZddlZddlZddlZddlmZdZdZdZdZ dZ eje Z d Zefd Zefd Zd Zd ZGddeZy)z4Shared utilities used by both downloads and uploads.N)commonrangez content-rangezCurrently using crcmod in pure python form. This is a slow implementation. Python 3 has a faster implementation, `google-crc32c`, which will be used if it is installed.z x-goog-hashzNo {checksum_type} checksum was returned from the service while downloading {} (which happens for composite objects), so client-side content integrity checking is not being performed.cy)zSimple default callback.NreC:\Users\user\Documents\project_loop\venv\Lib\site-packages\google/_async_resumable_media/_helpers.py do_nothingr )rc`||}||vr|tj|d|||S)aChecks that a specific header is in a headers dictionary. Args: response (object): An HTTP response object, expected to have a ``headers`` attribute that is a ``Mapping[str, str]``. name (str): The name of a required header. get_headers (Callable[Any, Mapping[str, str]]): Helper to get headers from an HTTP response. callback (Optional[Callable]): A callback that takes no arguments, to be executed when an exception is being raised. Returns: str: The desired header. Raises: ~google.resumable_media.common.InvalidResponse: If the header is missing. z$Response headers must contain headerrInvalidResponse)responsename get_headerscallbackheaderss rheader_requiredr-sB&(#G 7 $$  B! B BB A+B!B BBB!BB!ceZdZdZdZy)_DoNothingHashzDo-nothing hash object. Intended as a stand-in for ``hashlib.md5`` or a crc32c checksum implementation in cases where it isn't necessary to compute the hash. cy)zDo-nothing ``update`` method. Intended to match the interface of ``hashlib.md5`` and other checksums. Args: unused_chunk (bytes): A chunk of data. Nr)self unused_chunks rupdatez_DoNothingHash.updater rN)__name__ __module__ __qualname____doc__r5rrrr1r1s   rr1)r9loggingrr&google.resumable_mediar RANGE_HEADERCONTENT_RANGE_HEADER_SLOW_CRC32C_WARNING _HASH_HEADER_MISSING_CHECKSUM getLoggerr6_LOGGERr rrr r/objectr1rrrrDs; * &-  $ '  H %#;E:KU><61h  V  r