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Kirill Smelkov
ZODB
Commits
f0fb3552
Commit
f0fb3552
authored
Feb 19, 2004
by
Jeremy Hylton
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Ack! Deleted the wrong file in the last checkin.
parent
3488cfb3
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429 additions
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68 deletions
+429
-68
trunk/src/ZODB/referencesf.py
trunk/src/ZODB/referencesf.py
+0
-68
trunk/src/ZODB/serialize.py
trunk/src/ZODB/serialize.py
+429
-0
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trunk/src/ZODB/referencesf.py
deleted
100644 → 0
View file @
3488cfb3
##############################################################################
#
# Copyright (c) 2001, 2002 Zope Corporation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE
#
##############################################################################
"""Provide a function that can find object references in pickles
"""
import
cPickle
,
cStringIO
def
referencesf
(
p
,
rootl
=
None
,):
if
rootl
is
None
:
rootl
=
[]
u
=
cPickle
.
Unpickler
(
cStringIO
.
StringIO
(
p
))
l
=
len
(
rootl
)
u
.
persistent_load
=
rootl
u
.
noload
()
try
:
u
.
noload
()
except
:
# Hm. We failed to do second load. Maybe there wasn't a
# second pickle. Let's check:
f
=
cStringIO
.
StringIO
(
p
)
u
=
cPickle
.
Unpickler
(
f
)
u
.
persistent_load
=
[]
u
.
noload
()
if
len
(
p
)
>
f
.
tell
():
raise
ValueError
,
'Error unpickling, %s'
%
p
# References may be:
#
# - A tuple, in which case they are an oid and class.
# In this case, just extract the first element, which is
# the oid
#
# - A list, which is a weak reference. We skip those.
#
# - Anything else must be an oid. This means that an oid
# may not be a list or a tuple. This is a bit lame.
# We could avoid this lamosity by allowing single-element
# tuples, so that we wrap oids that are lists or tuples in
# tuples.
#
# - oids may *not* be false. I'm not sure why.
out
=
[]
for
v
in
rootl
:
assert
v
# Let's see if we ever get empty ones
if
type
(
v
)
is
list
:
# skip wekrefs
continue
if
type
(
v
)
is
tuple
:
v
=
v
[
0
]
out
.
append
(
v
)
rootl
[:]
=
out
return
rootl
trunk/src/ZODB/serialize.py
0 → 100644
View file @
f0fb3552
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