Mercurial > kallithea
view rhodecode/lib/ext_json.py @ 3774:60335b702a00 beta
invalidation: don't create CacheInvalidation records on startup
Creating the records early gave an advantage before lightweight was introduced.
With lightweight it is no longer necessary.
The records will be created on demand anyway and there is no reason to create and
maintain them before they are used.
author | Mads Kiilerich <madski@unity3d.com> |
---|---|
date | Wed, 03 Apr 2013 15:56:12 +0200 |
parents | 685ebc84c2e9 |
children |
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import datetime import functools import decimal import imp __all__ = ['json', 'simplejson', 'stdlibjson'] def _is_aware(value): """ Determines if a given datetime.time is aware. The logic is described in Python's docs: http://docs.python.org/library/datetime.html#datetime.tzinfo """ return (value.tzinfo is not None and value.tzinfo.utcoffset(value) is not None) def _obj_dump(obj): """ Custom function for dumping objects to JSON, if obj has __json__ attribute or method defined it will be used for serialization :param obj: """ if isinstance(obj, complex): return [obj.real, obj.imag] # See "Date Time String Format" in the ECMA-262 specification. # some code borrowed from django 1.4 elif isinstance(obj, datetime.datetime): r = obj.isoformat() if obj.microsecond: r = r[:23] + r[26:] if r.endswith('+00:00'): r = r[:-6] + 'Z' return r elif isinstance(obj, datetime.date): return obj.isoformat() elif isinstance(obj, decimal.Decimal): return str(obj) elif isinstance(obj, datetime.time): if _is_aware(obj): raise ValueError("JSON can't represent timezone-aware times.") r = obj.isoformat() if obj.microsecond: r = r[:12] return r elif isinstance(obj, set): return list(obj) elif hasattr(obj, '__json__'): if callable(obj.__json__): return obj.__json__() else: return obj.__json__ else: raise NotImplementedError # Import simplejson try: # import simplejson initially _sj = imp.load_module('_sj', *imp.find_module('simplejson')) def extended_encode(obj): try: return _obj_dump(obj) except NotImplementedError: pass raise TypeError("%r is not JSON serializable" % (obj,)) # we handle decimals our own it makes unified behavior of json vs # simplejson sj_version = [int(x) for x in _sj.__version__.split('.')] major, minor = sj_version[0], sj_version[1] if major < 2 or (major == 2 and minor < 1): # simplejson < 2.1 doesnt support use_decimal _sj.dumps = functools.partial(_sj.dumps, default=extended_encode) _sj.dump = functools.partial(_sj.dump, default=extended_encode) else: _sj.dumps = functools.partial(_sj.dumps, default=extended_encode, use_decimal=False) _sj.dump = functools.partial(_sj.dump, default=extended_encode, use_decimal=False) simplejson = _sj except ImportError: # no simplejson set it to None simplejson = None try: # simplejson not found try out regular json module _json = imp.load_module('_json', *imp.find_module('json')) # extended JSON encoder for json class ExtendedEncoder(_json.JSONEncoder): def default(self, obj): try: return _obj_dump(obj) except NotImplementedError: pass raise TypeError("%r is not JSON serializable" % (obj,)) # monkey-patch JSON encoder to use extended version _json.dumps = functools.partial(_json.dumps, cls=ExtendedEncoder) _json.dump = functools.partial(_json.dump, cls=ExtendedEncoder) stdlibjson = _json except ImportError: stdlibjson = None # set all available json modules if simplejson: json = _sj elif stdlibjson: json = _json else: raise ImportError('Could not find any json modules')