| d149e5b8 |
#
# Copyright (c) 2011 Edward Langley
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# Neither the name of the project's author nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#
"""
This module is primarily a wrapper around simplejson in order to make
it behave like demjson
- If an object being encoded has a 'json_equivalent' attribute, that will be called to get a (more)
serializable object
- if it has an 'items' method, it will be called
- if it defines both items and iteritems, the second will be used)
- if it is iterable, it will be made into a list
- otherwise 'str' will be called on the object, and that result will be used
"""
__all__ = ['encode', 'decode']
import functools
try:
import json
except ImportError:
import simplejson as json
def dict_encode(obj):
items = getattr(obj, 'iteritems', obj.items)
return dict( (encode_(k),encode_(v)) for k,v in items() )
def list_encode(obj):
return list(encode_(i) for i in obj)
def safe_encode(obj):
'''Always return something, even if it is useless for serialization'''
try: json.dumps(obj)
except TypeError: obj = str(obj)
return obj
def encode_(obj, **kw):
obj = getattr(obj, 'json_equivalent', lambda: obj)()
func = lambda x: x
if hasattr(obj, 'items'):
func = dict_encode
elif hasattr(obj, '__iter__'):
func = list_encode
else:
func = safe_encode
return func(obj)
encode = functools.partial(json.dumps, default=encode_)
decode = json.loads
__version__ = "$Revision: 1.2 $".split(":")[1][:-1].strip()
|