Function _get_binary

bson/__init__.py:376–410

Decode a BSON binary to bson.binary.Binary or python UUID.

(
    data: Any, _view: Any, position: int, obj_end: int, opts: CodecOptions[Any], dummy1: Any
)

def _get_binary(
    data: Any, _view: Any, position: int, obj_end: int, opts: CodecOptions[Any], dummy1: Any
) -> Tuple[Union[Binary, uuid.UUID], int]:
    """Decode a BSON binary to bson.binary.Binary or python UUID."""
    length, subtype = _UNPACK_LENGTH_SUBTYPE_FROM(data, position)
    position += 5
    if subtype == 2:
        length2 = _UNPACK_INT_FROM(data, position)[0]
        position += 4
        if length2 != length - 4:
            raise InvalidBSON("invalid binary (st 2) - lengths don't match!")
        length = length2
    end = position + length
    if length < 0 or end > obj_end:
        raise InvalidBSON("bad binary object length")

    # Convert UUID subtypes to native UUIDs.
    if subtype in ALL_UUID_SUBTYPES:
        uuid_rep = opts.uuid_representation
        binary_value = Binary(data[position:end], subtype)
        if (
            (uuid_rep == UuidRepresentation.UNSPECIFIED)
            or (subtype == UUID_SUBTYPE and uuid_rep != STANDARD)
            or (subtype == OLD_UUID_SUBTYPE and uuid_rep == STANDARD)
        ):
            return binary_value, end
        return binary_value.as_uuid(uuid_rep), end

    # Decode subtype 0 to 'bytes'.
    if subtype == 0:
        value = data[position:end]
    else:
        value = Binary(data[position:end], subtype)

    return value, end


def _get_oid(