Source code for jsonrpc.jsonutil
# $Id: jsonutil.py,v 1.2 2011/05/26 19:34:19 edwlan Exp $
"""
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()