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# coding: utf-8
from ._version import version
from .exceptions import *
from collections import namedtuple
class ExtType(namedtuple('ExtType', 'code data')):
"""ExtType represents ext type in msgpack."""
def __new__(cls, code, data):
if not isinstance(code, int):
raise TypeError("code must be int")
if not isinstance(data, bytes):
raise TypeError("data must be bytes")
if not 0 <= code <= 127:
raise ValueError("code must be 0~127")
return super(ExtType, cls).__new__(cls, code, data)
import os
if os.environ.get('MSGPACK_PUREPYTHON'):
from .fallback import Packer, unpackb, Unpacker
else:
try:
from ._cmsgpack import Packer, unpackb, Unpacker
except ImportError:
from .fallback import Packer, unpackb, Unpacker
def pack(o, stream, **kwargs):
"""
Pack object `o` and write it to `stream`
See :class:`Packer` for options.
"""
packer = Packer(**kwargs)
stream.write(packer.pack(o))
def packb(o, **kwargs):
"""
Pack object `o` and return packed bytes
See :class:`Packer` for options.
"""
return Packer(**kwargs).pack(o)
def unpack(stream, **kwargs):
"""
Unpack an object from `stream`.
Raises `ExtraData` when `stream` contains extra bytes.
See :class:`Unpacker` for options.
"""
data = stream.read()
return unpackb(data, **kwargs)
# alias for compatibility to simplejson/marshal/pickle.
load = unpack
loads = unpackb
dump = pack
dumps = packb