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https://github.com/kennethreitz/python-github3.git
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vendorization!
This commit is contained in:
Kenneth Reitz
@@ -0,0 +1,117 @@
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"""
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Wraps the best available JSON implementation available in a common interface
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"""
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__version__ = "0.2.0"
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__author__ = "Rune Halvorsen <runefh@gmail.com>"
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__homepage__ = "http://bitbucket.org/runeh/anyjson/"
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__docformat__ = "restructuredtext"
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"""
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.. function:: serialize(obj)
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Serialize the object to JSON.
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.. function:: deserialize(str)
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Deserialize JSON-encoded object to a Python object.
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.. function:: force_implementation(name)
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Load a specific json module. This is useful for testing and not much else
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.. attribute:: implementation
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The json implementation object. This is probably not useful to you,
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except to get the name of the implementation in use. The name is
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available through `implementation.name`.
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"""
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import sys
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implementation = None
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"""
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.. data:: _modules
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List of known json modules, and the names of their serialize/unserialize
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methods, as well as the exception they throw. Exception can be either
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an exception class or a string.
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"""
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_modules = [("cjson", "encode", "EncodeError", "decode", "DecodeError"),
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("jsonlib2", "write", "WriteError", "read", "ReadError"),
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("jsonlib", "write", "WriteError", "read", "ReadError"),
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("simplejson", "dumps", TypeError, "loads", ValueError),
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("json", "dumps", TypeError, "loads", ValueError),
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("django.utils.simplejson", "dumps", TypeError, "loads",
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ValueError)]
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_fields = ("modname", "encoder", "encerror", "decoder", "decerror")
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class _JsonImplementation(object):
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"""Incapsulates a JSON implementation"""
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def __init__(self, modspec):
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modinfo = dict(list(zip(_fields, modspec)))
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# No try block. We want importerror to end up at caller
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module = self._attempt_load(modinfo["modname"])
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self.implementation = modinfo["modname"]
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self._encode = getattr(module, modinfo["encoder"])
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self._decode = getattr(module, modinfo["decoder"])
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self._encode_error = modinfo["encerror"]
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self._decode_error = modinfo["decerror"]
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if isinstance(modinfo["encerror"], str):
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self._encode_error = getattr(module, modinfo["encerror"])
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if isinstance(modinfo["decerror"], str):
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self._decode_error = getattr(module, modinfo["decerror"])
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self.name = modinfo["modname"]
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def _attempt_load(self, modname):
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"""Attempt to load module name modname, returning it on success,
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throwing ImportError if module couldn't be imported"""
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__import__(modname)
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return sys.modules[modname]
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def serialize(self, data):
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"""Serialize the datastructure to json. Returns a string. Raises
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TypeError if the object could not be serialized."""
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try:
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return self._encode(data)
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except self._encode_error as exc:
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raise TypeError(*exc.args)
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def deserialize(self, s):
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"""deserialize the string to python data types. Raises
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ValueError if the string vould not be parsed."""
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try:
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return self._decode(s)
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except self._decode_error as exc:
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raise ValueError(*exc.args)
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def force_implementation(modname):
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"""Forces anyjson to use a specific json module if it's available"""
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global implementation
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for name, spec in [(e[0], e) for e in _modules]:
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if name == modname:
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implementation = _JsonImplementation(spec)
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return
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raise ImportError("No module named: %s" % modname)
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for modspec in _modules:
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try:
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implementation = _JsonImplementation(modspec)
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break
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except ImportError:
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pass
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else:
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raise ImportError("No supported JSON module found")
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serialize = lambda value: implementation.serialize(value)
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deserialize = lambda value: implementation.deserialize(value)
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@@ -0,0 +1,127 @@
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# Copyright (c) 2009 Raymond Hettinger
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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# OTHER DEALINGS IN THE SOFTWARE.
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from UserDict import DictMixin
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class OrderedDict(dict, DictMixin):
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def __init__(self, *args, **kwds):
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if len(args) > 1:
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raise TypeError('expected at most 1 arguments, got %d' % len(args))
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try:
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self.__end
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except AttributeError:
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self.clear()
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self.update(*args, **kwds)
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def clear(self):
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self.__end = end = []
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end += [None, end, end] # sentinel node for doubly linked list
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self.__map = {} # key --> [key, prev, next]
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dict.clear(self)
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def __setitem__(self, key, value):
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if key not in self:
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end = self.__end
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curr = end[1]
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curr[2] = end[1] = self.__map[key] = [key, curr, end]
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dict.__setitem__(self, key, value)
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def __delitem__(self, key):
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dict.__delitem__(self, key)
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key, prev, next = self.__map.pop(key)
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prev[2] = next
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next[1] = prev
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def __iter__(self):
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end = self.__end
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curr = end[2]
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while curr is not end:
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yield curr[0]
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curr = curr[2]
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def __reversed__(self):
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end = self.__end
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curr = end[1]
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while curr is not end:
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yield curr[0]
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curr = curr[1]
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def popitem(self, last=True):
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if not self:
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raise KeyError('dictionary is empty')
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if last:
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key = next(reversed(self))
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else:
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key = next(iter(self))
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value = self.pop(key)
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return key, value
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def __reduce__(self):
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items = [[k, self[k]] for k in self]
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tmp = self.__map, self.__end
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del self.__map, self.__end
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inst_dict = vars(self).copy()
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self.__map, self.__end = tmp
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if inst_dict:
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return (self.__class__, (items,), inst_dict)
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return self.__class__, (items,)
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def keys(self):
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return list(self)
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setdefault = DictMixin.setdefault
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update = DictMixin.update
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pop = DictMixin.pop
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values = DictMixin.values
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items = DictMixin.items
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iterkeys = DictMixin.iterkeys
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itervalues = DictMixin.itervalues
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iteritems = DictMixin.iteritems
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def __repr__(self):
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if not self:
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return '%s()' % (self.__class__.__name__,)
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return '%s(%r)' % (self.__class__.__name__, list(self.items()))
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def copy(self):
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return self.__class__(self)
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@classmethod
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def fromkeys(cls, iterable, value=None):
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d = cls()
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for key in iterable:
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d[key] = value
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return d
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def __eq__(self, other):
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if isinstance(other, OrderedDict):
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if len(self) != len(other):
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return False
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for p, q in zip(list(self.items()), list(other.items())):
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if p != q:
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return False
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return True
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return dict.__eq__(self, other)
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def __ne__(self, other):
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return not self == other
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