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-rw-r--r--sharedstate.git/sharedstate/shareddict.py107
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diff --git a/sharedstate.git/sharedstate/shareddict.py b/sharedstate.git/sharedstate/shareddict.py
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@@ -1,107 +0,0 @@
-# shareddict.py, classes to aid activities in sharing a state
-# Reinier Heeres, reinier@heeres.eu
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-#
-# Change log:
-# 2007-06-21: rwh, first version
-
-import logging
-_logger = logging.getLogger('sharinghelper')
-
-from sharedobject import SharedObject
-
-class SharedDict(SharedObject):
- """Shared dictionary object, generates key-based difference objects"""
-
- def __init__(self, name, helper, opt={}):
- SharedObject.__init__(self, name, helper, opt=opt)
- self._value = {}
-
- def __getitem__(self, key):
-# _logger.debug('SharedDict.__getitem__(%s)', key)
- return self.get_key(key)
-
- def __setitem__(self, key, val):
-# _logger.debug('SharedDict.__setitem__(%s, %s)', key, val)
- return self.set_key(key, val)
-
- def __delitem__(self, key):
- self.delete_key(key)
-
- def get_key(self, key, val):
- return self._value[key]
-
- def set_key(self, key, val):
- if key in self._value:
- d = {'change': {key: val}}
- else:
- d = {'add': {key: val}}
- self._value[key] = val
- self.changed(d, True)
-
- def delete_key(self, key):
- if key in self._value:
- del self._value[key]
- d = {'remove': key}
- self.changed(d, True)
-
- def _compatible_diffs(self, diffa, diffb):
- for key in diffa:
- if key in diffb:
- return False
- return True
-
- def diff(self, cur, old):
- ret = {'remove': [], 'add': {}, 'change': {}}
- if old is None:
- return ret
-
- for key in set(old.keys()).difference(cur.keys()):
- ret['remove'].append(key)
-
- for key in set(cur.keys()).difference(old.keys()):
- ret['add'][key] = cur[key]
-
- for key in set(cur.keys()).intersection(old.keys()):
- if cur[key] is not old[key]:
- ret['change'][key] = cur[key]
-
- return ret
-
- def _apply_diff_to(self, obj, diffobj):
- """Apply a diff and return an object that describes the inverse diff"""
-
- if diffobj is None:
- return (None, None)
-
- ret = {'add':{}, 'remove':[], 'change':{}}
-
- if 'remove' in diffobj:
- for key in diffobj['remove']:
- ret['add'][key] = obj[key]
- del self._value[key]
-
- if 'add' in diffobj:
- for key, val in diffobj['add'].iteritems():
- ret['remove'].append(key)
- obj[key] = val
-
- if 'change' in diffobj:
- for key, val in diffobj['change'].iteritems():
- ret[key] = self._value[key]
- obj[key] = val
-
- return (obj, ret)