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README.md

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       # ATPasser

     

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       # ATPasser ╬<!

     

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       A simple library for the [Authenticated Transfer Protocol](https://atproto.com/specs/atp) (AT Protocol or atproto for short).

     

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src/atpasser/data/cbor.py

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       from datetime import tzinfo

     

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       import typing

     

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       import cbor2

     

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       import cid

     

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       from .data import dataHook, Data

     

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       def tagHook(decoder: cbor2.CBORDecoder, tag: cbor2.CBORTag, shareable_index=None):

     

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           """

     

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           A simple tag hook for CID support.

     

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           """

     

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           return cid.from_bytes(tag.value) if tag.tag == 42 else tag

     

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       class CBOREncoder(cbor2.CBOREncoder):

     

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           """

     

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           Wrapper of cbor2.CBOREncoder.

     

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           """

     

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           def __init__(

     

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               self,

     

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               fp: typing.IO[bytes],

     

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               datetime_as_timestamp: bool = False,

     

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               timezone: tzinfo | None = None,

     

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               value_sharing: bool = False,

     

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               default: (

     

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                   typing.Callable[[cbor2.CBOREncoder, typing.Any], typing.Any] | None

     

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               ) = None,

     

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               canonical: bool = False,

     

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               date_as_datetime: bool = False,

     

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               string_referencing: bool = False,

     

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               indefinite_containers: bool = False,

     

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           ):

     

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               super().__init__(

     

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                   fp,

     

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                   datetime_as_timestamp,

     

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                   timezone,

     

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                   value_sharing,

     

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                   default,

     

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                   canonical,

     

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                   date_as_datetime,

     

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                   string_referencing,

     

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                   indefinite_containers,

     

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               )

     

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           @cbor2.shareable_encoder

     

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           def cidOrDataEncoder(self: cbor2.CBOREncoder, value: cid.CIDv0 | cid.CIDv1 | Data):

     

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               """

     

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               Encode CID or Data to CBOR Tag.

     

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               """

     

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               if isinstance(value, (cid.CIDv0, cid.CIDv1)):

     

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                   self.encode(cbor2.CBORTag(42, value.encode()))

     

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               elif isinstance(value, Data):

     

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                   self.encode(value.data())

     

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       def _cborObjectHook(decoder: cbor2.CBORDecoder, value):

     

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           return dataHook(value)

     

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       class CBORDecoder(cbor2.CBORDecoder):

     

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           """

     

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           Wrapper of cbor2.CBORDecoder.

     

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           """

     

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           def __init__(

     

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               self,

     

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               fp: typing.IO[bytes],

     

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               tag_hook: (

     

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                   typing.Callable[[cbor2.CBORDecoder, cbor2.CBORTag], typing.Any] | None

     

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               ) = tagHook,

     

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               object_hook: (

     

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                   typing.Callable[

     

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                       [cbor2.CBORDecoder, dict[typing.Any, typing.Any]], typing.Any

     

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                   ]

     

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                   | None

     

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               ) = _cborObjectHook,

     

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               str_errors: typing.Literal["strict", "error", "replace"] = "strict",

     

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           ):

     

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               super().__init__(fp, tag_hook, object_hook, str_errors)

     

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       # Make things for CBOR again.

     

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       from io import BytesIO

     

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       def dumps(

     

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           obj: object,

     

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           datetime_as_timestamp: bool = False,

     

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           timezone: tzinfo | None = None,

     

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           value_sharing: bool = False,

     

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           default: typing.Callable[[cbor2.CBOREncoder, typing.Any], typing.Any] | None = None,

     

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           canonical: bool = False,

     

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           date_as_datetime: bool = False,

     

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           string_referencing: bool = False,

     

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           indefinite_containers: bool = False,

     

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       ) -> bytes:

     

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           with BytesIO() as fp:

     

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               CBOREncoder(

     

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                   fp,

     

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                   datetime_as_timestamp=datetime_as_timestamp,

     

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                   timezone=timezone,

     

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                   value_sharing=value_sharing,

     

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                   default=default,

     

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                   canonical=canonical,

     

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                   date_as_datetime=date_as_datetime,

     

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                   string_referencing=string_referencing,

     

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                   indefinite_containers=indefinite_containers,

     

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               ).encode(obj)

     

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               return fp.getvalue()

     

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       def dump(

     

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           obj: object,

     

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           fp: typing.IO[bytes],

     

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           datetime_as_timestamp: bool = False,

     

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           timezone: tzinfo | None = None,

     

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           value_sharing: bool = False,

     

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           default: typing.Callable[[cbor2.CBOREncoder, typing.Any], typing.Any] | None = None,

     

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           canonical: bool = False,

     

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           date_as_datetime: bool = False,

     

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           string_referencing: bool = False,

     

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           indefinite_containers: bool = False,

     

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       ) -> None:

     

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           CBOREncoder(

     

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               fp,

     

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               datetime_as_timestamp=datetime_as_timestamp,

     

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               timezone=timezone,

     

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               value_sharing=value_sharing,

     

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               default=default,

     

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               canonical=canonical,

     

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               date_as_datetime=date_as_datetime,

     

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               string_referencing=string_referencing,

     

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               indefinite_containers=indefinite_containers,

     

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           ).encode(obj)

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src/atpasser/data/wrapper.py

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       # Screw it. I have to make 4 `json`-like functions.

     

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       def _dataDecorator(func):

     

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       def _dataDecoratorForDump(func):

     

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           @functools.wraps(func)

     

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           def wrapper(obj, *args, **kwargs):

     

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               kwargs.setdefault("cls", DataEncoder)

     
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           return wrapper

     

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       dump = _dataDecorator(json.dump)

     

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       dumps = _dataDecorator(json.dumps)

     

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       load = _dataDecorator(json.load)

     

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       loads = _dataDecorator(json.loads)

     

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       def _dataDecoratorForLoad(func):

     

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           @functools.wraps(func)

     

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           def wrapper(obj, *args, **kwargs):

     

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               kwargs.setdefault("cls", DataDecoder)

     

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               return func(obj, *args, **kwargs)

     

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           return wrapper

     

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       dump = _dataDecoratorForDump(json.dump)

     

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       dumps = _dataDecoratorForDump(json.dumps)

     

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       load = _dataDecoratorForLoad(json.load)

     

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       loads = _dataDecoratorForLoad(json.loads)

     

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       """

     

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       Wrapper of the JSON functions to support ATProto data.

     

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       """