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111 lines
3.9 KiB
Python
111 lines
3.9 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (c) 2012 Virtual Cable S.L.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without modification,
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# are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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# * Neither the name of Virtual Cable S.L. nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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'''
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@author: Adolfo Gómez, dkmaster at dkmon dot com
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'''
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from uds.core.Serializable import Serializable
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from uds.core.util import encoders
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import pickle
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import timeit
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class Attribute(object):
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def __init__(self, theType, value=None):
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self._type = theType
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self.setValue(value)
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def getType(self):
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return self._type
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def getValue(self):
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return self._value
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def getStrValue(self):
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return str(self._value)
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def setValue(self, value):
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if value is None:
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self._value = self._type()
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else:
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self._value = self._type(value)
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class AutoAttributes(Serializable):
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'''
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Easy creation of attributes to marshal & unmarshal at modules
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usage as base class (First class so yours inherits this "marshal" and "unmarshal"
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initialize at init with super(myclass,self).__init__(attr1=type, attr2=type, ...)
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or with declare(attr1=type,attr2=type,..)
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Access attrs as "self._attr1, self._attr2"
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'''
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def __init__(self, **kwargs):
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self.declare(**kwargs)
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def __getattribute__(self, name):
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if name.startswith('_') and name[1:] in self.dict:
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return self.dict[name[1:]].getValue()
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return object.__getattribute__(self, name)
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def __setattr__(self, name, value):
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if name.startswith('_') and name[1:] in self.dict:
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self.dict[name[1:]].setValue(value)
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else:
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object.__setattr__(self, name, value)
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def declare(self, **kwargs):
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d = {}
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for key, typ in kwargs.iteritems():
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d[key] = Attribute(typ)
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self.dict = d
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def marshal(self):
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return encoders.encode('\2'.join(['%s\1%s' % (k, pickle.dumps(v)) for k, v in self.dict.iteritems()]), 'bz2')
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def unmarshal(self, data):
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if data == '': # Can be empty
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return
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# We keep original data (maybe incomplete)
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try:
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data = encoders.decode(data, 'bz2')
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except Exception: # With old zip encoding
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data = encoders.decode(data, 'zip')
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for pair in data.split('\2'):
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k, v = pair.split('\1')
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self.dict[k] = pickle.loads(str(v))
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def __str__(self):
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str_ = '<AutoAttribute '
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for k, v in self.dict.iteritems():
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str_ += "%s (%s) = %s" % (k, v.getType(), v.getStrValue())
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return str_ + '>'
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