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serializers.py
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Created
Mon, Oct 14, 10:34
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text/x-python
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Wed, Oct 16, 10:34 (2 d)
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R3600 invenio-infoscience
serializers.py
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# -*- coding: utf-8 -*-
# This file is part of Invenio.
# Copyright (C) 2013 CERN.
#
# Invenio is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# Invenio 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
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Invenio; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""
invenio.utils.serializers
-------------------------
Implements custom serializers.
"""
import
marshal
from
six.moves
import
cPickle
as
pickle
from
zlib
import
compress
,
decompress
__all__
=
[
'ZlibMarshal'
,
'serialize_via_marshal'
,
'deserialize_via_marshal'
,
'serialize_via_pickle'
,
'deserialize_via_pickle'
]
class
ZlibMarshal
(
object
):
"""Combines zlib and marshal libraries."""
@staticmethod
def
loads
(
astring
):
"""Decompress and deserialize string into a Python object via marshal."""
return
marshal
.
loads
(
decompress
(
astring
))
@staticmethod
def
dumps
(
obj
):
"""Serialize Python object via marshal into a compressed string."""
return
compress
(
marshal
.
dumps
(
obj
))
# Provides legacy API functions.
serialize_via_marshal
=
ZlibMarshal
.
dumps
deserialize_via_marshal
=
ZlibMarshal
.
loads
class
ZlibPickle
(
object
):
"""Combines zlib and pickle libraries."""
@staticmethod
def
loads
(
astring
):
"""Decompress and deserialize string into a Python object via pickle"""
return
pickle
.
loads
(
decompress
(
astring
))
@staticmethod
def
dumps
(
obj
):
"""Serialize Python object via pickle into a compressed string."""
return
compress
(
pickle
.
dumps
(
obj
))
# Provides legacy API functions.
serialize_via_pickle
=
ZlibPickle
.
dumps
deserialize_via_pickle
=
ZlibPickle
.
loads
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