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# Pyrogram - Telegram MTProto API Client Library for Python

# Copyright (C) 2017-2019 Dan Tès <https://github.com/delivrance>

#

# This file is part of Pyrogram.

#

# Pyrogram is free software: you can redistribute it and/or modify

# it under the terms of the GNU Lesser General Public License as published

# by the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# Pyrogram is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU Lesser General Public License for more details.

#

# You should have received a copy of the GNU Lesser General Public License

# along with Pyrogram. If not, see <http://www.gnu.org/licenses/>.

from collections import OrderedDict

from datetime import datetime

from io import BytesIO

from json import dumps

class Object:

all = {}

__slots__ = []

QUALNAME = "Base"

@staticmethod

def read(b: BytesIO, *args):

return Object.all[int.from_bytes(b.read(4), "little")].read(b, *args)

def write(self, *args) -> bytes:

pass

def __str__(self) -> str:

return dumps(self, indent=4, default=default, ensure_ascii=False)

def __len__(self) -> int:

return len(self.write())

def __getitem__(self, item):

return getattr(self, item)

def remove_none(obj):

if isinstance(obj, (list, tuple, set)):

return type(obj)(remove_none(x) for x in obj if x is not None)

elif isinstance(obj, dict):

return type(obj)((remove_none(k), remove_none(v)) for k, v in obj.items() if k is not None and v is not None)

else:

return obj

def default(o: "Object"):

try:

content = {i: getattr(o, i) for i in o.__slots__}

return remove_none(

OrderedDict(

[("_", o.QUALNAME)]

+ [i for i in content.items()]

)

)

except AttributeError:

if isinstance(o, datetime):

return o.strftime("%d-%b-%Y %H:%M:%S")

else:

return repr(o)