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Dont rely on constants from the pickle module

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Kovid Goyal 2019-03-15 15:48:32 +05:30
parent fae355fe65
commit e9b26ebb00
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1 changed files with 2 additions and 2 deletions
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4
src/calibre/utils/__init__.py
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@ -28,7 +28,7 @@ def join_with_timeout(q, timeout=2):
def unpickle_binary_string(data):
# Maintains compatibility with python's pickle module protocol version 2
import struct
from pickle import PROTO, SHORT_BINSTRING, BINSTRING
PROTO, SHORT_BINSTRING, BINSTRING = b'\x80', b'U', b'T'
if data.startswith(PROTO + b'\x02'):
offset = 2
which = data[offset]
@ -47,6 +47,6 @@ def unpickle_binary_string(data):
def pickle_binary_string(data):
# Maintains compatibility with python's pickle module protocol version 2
import struct
from pickle import PROTO, BINSTRING, STOP
PROTO, STOP, BINSTRING = b'\x80', b'.', b'T'
data = bytes(data)
return PROTO + b'\x02' + BINSTRING + struct.pack(b'<i', len(data)) + data + STOP