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87 lines
1.9 KiB
Python
87 lines
1.9 KiB
Python
# Authors:
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# Jason Gerard DeRose <jderose@redhat.com>
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#
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# Copyright (C) 2008 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; version 2 only
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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Base classes in for plug-in architecture and generative API.
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"""
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from exceptions import NameSpaceError
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class Command(object):
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def normalize(self, kw):
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raise NotImplementedError
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def validate(self, kw):
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raise NotImplementedError
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def execute(self, kw):
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raise NotImplementedError
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def __call__(self, **kw):
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kw = self.normalize(kw)
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invalid = self.validate(kw)
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if invalid:
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return invalid
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return self.execute(kw)
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class Argument(object):
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pass
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class NameSpace(object):
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def __init__(self, kw):
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assert isinstance(kw, dict)
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self.__kw = dict(kw)
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for (key, value) in self.__kw.items():
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assert not key.startswith('_')
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setattr(self, key, value)
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self.__keys = sorted(self.__kw)
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def __getitem__(self, key):
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return self.__kw[key]
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def __iter__(self):
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for key in self.__keys:
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yield key
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class API(object):
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def __init__(self):
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self.__c = object()
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self.__o = object()
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def __get_c(self):
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return self.__c
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c = property(__get_c)
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def __get_o(self):
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return self.__o
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o = property(__get_o)
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def register_command(self, name, callback, override=False):
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pass
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