2012-11-19 10:45:03 +01:00
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# -*- coding: utf-8 -*-
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"sets the options of the configuration objects Config object itself"
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2013-03-01 13:10:52 +01:00
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# Copyright (C) 2012-2013 Team tiramisu (see AUTHORS for all contributors)
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2012-11-19 10:45:03 +01:00
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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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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# The original `Config` design model is unproudly borrowed from
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# the rough pypy's guys: http://codespeak.net/svn/pypy/dist/pypy/config/
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# the whole pypy projet is under MIT licence
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# ____________________________________________________________
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2013-04-18 20:26:40 +02:00
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from time import time
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2013-05-08 18:14:42 +02:00
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from copy import copy
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2013-05-31 23:29:20 +02:00
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from tiramisu.error import RequirementError, PropertiesOptionError
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2013-04-14 12:01:32 +02:00
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from tiramisu.i18n import _
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2013-08-19 11:01:21 +02:00
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#from tiramisu.plugins.dictionary.setting import PluginSettings
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from tiramisu.plugins.sqlite3.setting import PluginSettings
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2013-08-14 23:06:31 +02:00
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2013-04-08 16:05:56 +02:00
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2013-07-01 16:49:10 +02:00
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default_encoding = 'utf-8'
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2013-04-18 20:26:40 +02:00
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expires_time = 5
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2013-04-20 21:58:52 +02:00
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ro_remove = ('permissive', 'hidden')
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ro_append = ('frozen', 'disabled', 'validator', 'everything_frozen', 'mandatory')
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rw_remove = ('permissive', 'everything_frozen', 'mandatory')
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rw_append = ('frozen', 'disabled', 'validator', 'hidden')
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2013-07-13 10:42:10 +02:00
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default_properties = ('expire', 'validator')
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2013-04-18 20:26:40 +02:00
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2012-12-06 18:14:57 +01:00
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class _const:
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"""convenient class that emulates a module
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2012-12-10 09:53:13 +01:00
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and builds constants (that is, unique names)"""
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2013-04-03 12:20:26 +02:00
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class ConstError(TypeError):
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pass
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2012-12-06 18:14:57 +01:00
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def __setattr__(self, name, value):
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2013-04-03 12:20:26 +02:00
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if name in self.__dict__:
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2013-07-17 22:30:35 +02:00
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raise self.ConstError, _("can't rebind group ({})").format(name)
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2012-12-06 18:14:57 +01:00
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self.__dict__[name] = value
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def __delattr__(self, name):
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2013-04-03 12:20:26 +02:00
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if name in self.__dict__:
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2013-07-17 22:30:35 +02:00
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raise self.ConstError, _("can't unbind group ({})").format(name)
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2013-04-14 12:01:32 +02:00
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raise ValueError(name)
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2013-04-03 12:20:26 +02:00
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2012-12-10 09:53:13 +01:00
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# ____________________________________________________________
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class GroupModule(_const):
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"emulates a module to manage unique group (OptionDescription) names"
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2012-12-10 14:38:25 +01:00
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class GroupType(str):
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2012-12-06 18:14:57 +01:00
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"""allowed normal group (OptionDescription) names
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*normal* means : groups that are not master
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"""
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pass
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2013-04-03 12:20:26 +02:00
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2012-12-10 14:38:25 +01:00
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class DefaultGroupType(GroupType):
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2012-12-10 14:10:05 +01:00
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"""groups that are default (typically 'default')"""
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pass
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2012-12-10 14:38:25 +01:00
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class MasterGroupType(GroupType):
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2012-12-06 18:14:57 +01:00
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"""allowed normal group (OptionDescription) names
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*master* means : groups that have the 'master' attribute set
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"""
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pass
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2012-12-10 09:53:13 +01:00
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# setting.groups (emulates a module)
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groups = GroupModule()
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2012-12-06 18:14:57 +01:00
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2013-04-03 12:20:26 +02:00
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2012-12-10 09:53:13 +01:00
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def populate_groups():
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"populates the available groups in the appropriate namespaces"
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2013-02-06 16:21:30 +01:00
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groups.master = groups.MasterGroupType('master')
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groups.default = groups.DefaultGroupType('default')
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groups.family = groups.GroupType('family')
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2012-12-10 09:53:13 +01:00
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# names are in the module now
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2012-12-06 18:14:57 +01:00
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populate_groups()
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2013-04-03 12:20:26 +02:00
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2012-12-06 18:14:57 +01:00
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# ____________________________________________________________
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2012-12-10 14:10:05 +01:00
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class OwnerModule(_const):
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"""emulates a module to manage unique owner names.
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owners are living in `Config._cfgimpl_value_owners`
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"""
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class Owner(str):
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"""allowed owner names
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"""
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pass
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2013-04-03 12:20:26 +02:00
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2012-12-10 14:10:05 +01:00
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class DefaultOwner(Owner):
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"""groups that are default (typically 'default')"""
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pass
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# setting.owners (emulates a module)
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owners = OwnerModule()
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2012-12-04 12:06:26 +01:00
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2013-04-03 12:20:26 +02:00
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2012-12-10 14:10:05 +01:00
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def populate_owners():
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"""populates the available owners in the appropriate namespaces
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- 'user' is the generic is the generic owner.
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- 'default' is the config owner after init time
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"""
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setattr(owners, 'default', owners.DefaultOwner('default'))
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2013-04-03 12:20:26 +02:00
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setattr(owners, 'user', owners.Owner('user'))
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2012-12-10 14:38:25 +01:00
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def add_owner(name):
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"""
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:param name: the name of the new owner
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"""
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setattr(owners, name, owners.Owner(name))
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setattr(owners, 'add_owner', add_owner)
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2012-12-10 14:10:05 +01:00
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# names are in the module now
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populate_owners()
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2013-02-21 17:07:00 +01:00
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2013-04-03 12:20:26 +02:00
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2013-02-21 17:07:00 +01:00
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class MultiTypeModule(_const):
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2013-05-23 14:55:52 +02:00
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"namespace for the master/slaves"
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2013-02-21 17:07:00 +01:00
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class MultiType(str):
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pass
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2013-04-03 12:20:26 +02:00
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2013-02-21 17:07:00 +01:00
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class DefaultMultiType(MultiType):
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pass
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2013-04-03 12:20:26 +02:00
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2013-02-21 17:07:00 +01:00
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class MasterMultiType(MultiType):
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pass
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2013-04-03 12:20:26 +02:00
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2013-02-21 17:07:00 +01:00
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class SlaveMultiType(MultiType):
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pass
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multitypes = MultiTypeModule()
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2013-04-03 12:20:26 +02:00
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2013-02-21 17:07:00 +01:00
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def populate_multitypes():
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2013-05-23 14:55:52 +02:00
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"populates the master/slave namespace"
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2013-02-21 17:07:00 +01:00
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setattr(multitypes, 'default', multitypes.DefaultMultiType('default'))
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setattr(multitypes, 'master', multitypes.MasterMultiType('master'))
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setattr(multitypes, 'slave', multitypes.SlaveMultiType('slave'))
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populate_multitypes()
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2013-04-03 12:20:26 +02:00
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2013-04-20 17:30:05 +02:00
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class Property(object):
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2013-05-21 18:42:56 +02:00
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"a property is responsible of the option's value access rules"
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__slots__ = ('_setting', '_properties', '_opt')
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def __init__(self, setting, prop, opt=None):
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self._opt = opt
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self._setting = setting
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self._properties = prop
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def append(self, propname):
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self._properties.add(propname)
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self._setting._setproperties(self._properties, self._opt)
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def remove(self, propname):
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if propname in self._properties:
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self._properties.remove(propname)
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2013-08-14 23:06:31 +02:00
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self._setting._setproperties(self._properties, self._opt)
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2013-07-13 10:42:10 +02:00
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def reset(self):
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self._setting.reset(opt=self._opt)
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2013-04-20 17:30:05 +02:00
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def __contains__(self, propname):
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return propname in self._properties
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2013-04-22 09:19:05 +02:00
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def __repr__(self):
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return str(list(self._properties))
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2013-04-22 09:19:05 +02:00
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2013-04-20 17:30:05 +02:00
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2012-12-10 14:10:05 +01:00
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#____________________________________________________________
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2013-08-14 23:06:31 +02:00
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class Settings(PluginSettings):
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2012-11-19 10:45:03 +01:00
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"``Config()``'s configuration options"
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__slots__ = ('context', '_owner')
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2013-04-03 12:20:26 +02:00
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2013-08-19 11:01:21 +02:00
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def __init__(self, context, config_id):
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# generic owner
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self._owner = owners.user
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self.context = context
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2013-08-19 11:01:21 +02:00
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super(Settings, self).__init__(config_id)
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2013-04-03 12:20:26 +02:00
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2012-12-11 11:18:53 +01:00
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#____________________________________________________________
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2012-11-19 10:45:03 +01:00
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# properties methods
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def __contains__(self, propname):
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return propname in self._getproperties()
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2013-04-20 17:30:05 +02:00
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2013-04-22 09:19:05 +02:00
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def __repr__(self):
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return str(list(self._getproperties()))
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2013-04-22 09:19:05 +02:00
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2013-04-20 17:30:05 +02:00
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def __getitem__(self, opt):
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return Property(self, self._getproperties(opt), opt)
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2013-03-14 11:31:44 +01:00
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2013-04-20 17:30:05 +02:00
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def __setitem__(self, opt, value):
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raise ValueError('you must only append/remove properties')
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2013-07-13 10:42:10 +02:00
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def reset(self, opt=None, all_properties=False):
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if all_properties and opt:
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raise ValueError(_('opt and all_properties must not be set '
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'together in reset'))
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if all_properties:
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self._p_reset_all_propertives()
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2013-07-13 10:42:10 +02:00
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else:
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2013-08-14 23:06:31 +02:00
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self._p_reset_properties(opt)
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2013-07-12 16:20:34 +02:00
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self.context.cfgimpl_reset_cache()
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2013-08-14 23:06:31 +02:00
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def _getproperties(self, opt=None, is_apply_req=True):
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if opt is None:
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2013-08-14 23:06:31 +02:00
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props = self._p_getproperties(opt, default_properties)
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2013-04-03 12:20:26 +02:00
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else:
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2013-08-14 23:06:31 +02:00
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ntime = None
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2013-08-19 11:01:21 +02:00
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if self._p_hascache('property', opt):
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ntime = time()
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2013-08-19 11:01:21 +02:00
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is_cached, props = self._p_getcache('property', opt, ntime)
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2013-08-14 23:06:31 +02:00
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if is_cached:
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2013-05-02 11:23:04 +02:00
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return props
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2013-04-08 16:05:56 +02:00
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if is_apply_req:
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2013-07-01 11:55:32 +02:00
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self.apply_requires(opt)
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2013-08-14 23:06:31 +02:00
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props = self._p_getproperties(opt, opt._properties)
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if 'expire' in self:
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if ntime is None:
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ntime = time()
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2013-08-19 11:01:21 +02:00
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self._p_setcache('property', opt, props, ntime + expires_time)
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2013-04-20 11:25:14 +02:00
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return props
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2013-03-14 11:31:44 +01:00
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2013-04-20 17:30:05 +02:00
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def append(self, propname):
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2012-11-19 10:45:03 +01:00
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"puts property propname in the Config's properties attribute"
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2013-08-14 23:06:31 +02:00
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Property(self, self._getproperties()).append(propname)
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2012-11-19 10:45:03 +01:00
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2013-04-20 17:30:05 +02:00
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def remove(self, propname):
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2012-11-19 10:45:03 +01:00
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"deletes property propname in the Config's properties attribute"
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2013-08-14 23:06:31 +02:00
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Property(self, self._getproperties()).remove(propname)
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2013-04-03 12:20:26 +02:00
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2013-08-14 23:06:31 +02:00
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def _setproperties(self, properties, opt=None):
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2013-04-03 12:20:26 +02:00
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"""save properties for specified opt
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(never save properties if same has option properties)
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"""
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if opt is None:
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2013-08-14 23:06:31 +02:00
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self._p_setproperties(opt, properties)
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2013-04-03 12:20:26 +02:00
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else:
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2013-07-13 10:42:10 +02:00
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if set(opt._properties) == properties:
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2013-08-14 23:06:31 +02:00
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self._p_reset_properties(opt)
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2013-04-03 12:20:26 +02:00
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else:
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2013-08-14 23:06:31 +02:00
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self._p_setproperties(opt, properties)
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2013-07-13 10:42:10 +02:00
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self.context.cfgimpl_reset_cache()
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2013-04-20 17:30:05 +02:00
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2012-12-11 11:18:53 +01:00
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#____________________________________________________________
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2013-04-17 21:33:34 +02:00
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def validate_properties(self, opt_or_descr, is_descr, is_write,
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value=None, force_permissive=False,
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force_properties=None):
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2013-05-02 11:23:04 +02:00
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#opt properties
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2013-08-14 23:06:31 +02:00
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properties = copy(self._getproperties(opt_or_descr))
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2013-05-02 11:23:04 +02:00
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#remove opt permissive
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2013-08-14 23:06:31 +02:00
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properties -= self._p_getpermissive(opt_or_descr)
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2013-05-02 11:23:04 +02:00
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#remove global permissive if need
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2013-08-14 23:06:31 +02:00
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self_properties = copy(self._getproperties())
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2013-05-02 11:23:04 +02:00
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if force_permissive is True or 'permissive' in self_properties:
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2013-08-14 23:06:31 +02:00
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properties -= self._p_getpermissive()
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2013-05-02 11:23:04 +02:00
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#global properties
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if force_properties is not None:
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2013-05-08 18:14:42 +02:00
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self_properties.update(force_properties)
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2013-05-02 11:23:04 +02:00
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#calc properties
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2013-05-08 18:14:42 +02:00
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properties &= self_properties
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2013-05-02 11:23:04 +02:00
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#mandatory and frozen are special properties
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if is_descr:
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2013-05-08 18:14:42 +02:00
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properties -= frozenset(('mandatory', 'frozen'))
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2013-05-02 11:23:04 +02:00
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else:
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if 'mandatory' in properties and \
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2013-08-14 23:06:31 +02:00
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not self.context.cfgimpl_get_values()._isempty(opt_or_descr,
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value):
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2013-05-02 11:23:04 +02:00
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properties.remove('mandatory')
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if is_write and 'everything_frozen' in self_properties:
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properties.add('frozen')
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elif 'frozen' in properties and not is_write:
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properties.remove('frozen')
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if properties != frozenset():
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2013-07-23 14:24:42 +02:00
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props = list(properties)
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2013-05-02 11:23:04 +02:00
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if 'frozen' in properties:
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2013-07-18 21:25:07 +02:00
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raise PropertiesOptionError(_('cannot change the value for '
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'option {0} this option is frozen'
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2013-07-23 14:24:42 +02:00
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'').format(opt_or_descr._name), props)
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2013-05-02 11:23:04 +02:00
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else:
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2013-07-18 21:25:07 +02:00
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raise PropertiesOptionError(_("trying to access to an option "
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"named: {0} with properties {1}"
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2013-07-23 14:24:42 +02:00
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"").format(opt_or_descr._name, str(props)), props)
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2013-04-17 21:33:34 +02:00
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2013-08-14 23:06:31 +02:00
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#FIXME should be setpermissive
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2013-04-04 15:14:16 +02:00
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def set_permissive(self, permissive, opt=None):
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2013-04-20 17:30:05 +02:00
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if not isinstance(permissive, tuple):
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raise TypeError(_('permissive must be a tuple'))
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2013-08-14 23:06:31 +02:00
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self._p_setpermissive(opt, permissive)
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2013-04-03 12:20:26 +02:00
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2013-02-06 14:59:24 +01:00
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#____________________________________________________________
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2013-04-03 12:20:26 +02:00
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def setowner(self, owner):
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":param owner: sets the default value for owner at the Config level"
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if not isinstance(owner, owners.Owner):
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2013-04-14 12:01:32 +02:00
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raise TypeError(_("invalid generic owner {0}").format(str(owner)))
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2013-04-20 17:30:05 +02:00
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self._owner = owner
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2012-11-19 10:45:03 +01:00
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2013-04-03 12:20:26 +02:00
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def getowner(self):
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2013-04-20 17:30:05 +02:00
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return self._owner
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2013-02-06 14:59:24 +01:00
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#____________________________________________________________
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2013-04-20 21:58:52 +02:00
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def _read(self, remove, append):
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for prop in remove:
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self.remove(prop)
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for prop in append:
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self.append(prop)
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2012-11-19 10:45:03 +01:00
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def read_only(self):
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"convenience method to freeze, hidde and disable"
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2013-04-20 21:58:52 +02:00
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self._read(ro_remove, ro_append)
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2012-11-19 10:45:03 +01:00
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def read_write(self):
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"convenience method to freeze, hidde and disable"
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2013-04-20 21:58:52 +02:00
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self._read(rw_remove, rw_append)
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2013-04-08 16:05:56 +02:00
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2013-04-19 22:42:33 +02:00
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def reset_cache(self, only_expired):
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if only_expired:
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2013-08-19 11:01:21 +02:00
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self._p_reset_expired_cache('property', time())
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2013-04-19 22:42:33 +02:00
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else:
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2013-08-19 11:01:21 +02:00
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self._p_reset_all_cache('property')
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2013-04-18 20:26:40 +02:00
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2013-07-01 11:55:32 +02:00
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def apply_requires(self, opt):
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"carries out the jit (just in time requirements between options"
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if opt._requires is None:
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return
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# filters the callbacks
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2013-08-14 23:06:31 +02:00
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setting = Property(self, self._getproperties(opt, False), opt)
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2013-07-01 11:55:32 +02:00
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descr = self.context.cfgimpl_get_description()
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optpath = descr.impl_get_path_by_opt(opt)
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for requires in opt._requires:
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matches = False
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for require in requires:
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option, expected, action, inverse, transitive, same_action = require
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path = descr.impl_get_path_by_opt(option)
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if path == optpath or path.startswith(optpath + '.'):
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raise RequirementError(_("malformed requirements "
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"imbrication detected for option: '{0}' "
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"with requirement on: '{1}'").format(optpath, path))
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try:
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value = self.context._getattr(path, force_permissive=True)
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except PropertiesOptionError, err:
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if not transitive:
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continue
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properties = err.proptype
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|
|
if same_action and action not in properties:
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raise RequirementError(_("option '{0}' has requirement's property error: "
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"{1} {2}").format(opt._name, path, properties))
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#transitive action, force expected
|
2013-07-03 15:04:15 +02:00
|
|
|
value = expected[0]
|
2013-07-01 11:55:32 +02:00
|
|
|
inverse = False
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|
|
|
except AttributeError:
|
|
|
|
raise AttributeError(_("required option not found: "
|
|
|
|
"{0}").format(path))
|
2013-07-03 15:04:15 +02:00
|
|
|
if not inverse and value in expected or inverse and value not in expected:
|
2013-07-01 11:55:32 +02:00
|
|
|
matches = True
|
|
|
|
setting.append(action)
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|
|
|
## the calculation cannot be carried out
|
|
|
|
break
|
|
|
|
# no requirement has been triggered, then just reverse the action
|
|
|
|
if not matches:
|
|
|
|
setting.remove(action)
|
2013-08-19 11:01:21 +02:00
|
|
|
|
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|
|
def _get_opt_path(self, opt):
|
|
|
|
return self.context.cfgimpl_get_description().impl_get_path_by_opt(opt)
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