+++ /dev/null
-# -*- coding: utf-8 -*-
-#######################################################################################
-# Plinn - http://plinn.org #
-# Copyright © 2005-2009 Benoît PIN <benoit.pin@ensmp.fr> #
-# #
-# 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 Street, Fifth Floor, Boston, MA 02110-1301, USA. #
-#######################################################################################
-"""
-Module to manage history of contents (comparisons, copy to present).
-
-
-
-"""
-
-from Globals import InitializeClass
-from AccessControl import ClassSecurityInfo
-from ExtensionClass import Base
-import Acquisition
-from zope.interface import implements
-from OFS.History import historicalRevision
-from Products.PluginIndexes.common import safe_callable
-from interfaces import IContentHistory
-from Products.CMFCore.permissions import ModifyPortalContent
-from permissions import ViewHistory
-from struct import pack, unpack
-from DateTime import DateTime
-
-class ContentHistory(Base, Acquisition.Implicit) :
- """ Utility to manage historical entries of a content
- """
- implements(IContentHistory)
- security = ClassSecurityInfo()
-
- def __init__(self, content) :
- self._content = content
-
- security.declareProtected(ViewHistory, 'listEntries')
- def listEntries(self, first=0, last=20):
- oid = self._content._p_oid
- db = self._content._p_jar.db()
- r = db.history(oid, size=last)
-
- if r is None:
- # storage doesn't support history
- return ()
-
- r=r[first:]
-
- for d in r:
- d['time']=DateTime(d['time'])
- d['key']='.'.join(map(str, unpack(">HHHH", d['tid'])))
-
- return r
-
- security.declareProtected(ViewHistory, 'getHistoricalRevisionByKey')
- def getHistoricalRevisionByKey(self, key, withContext=False):
-
- serial = apply(pack, ('>HHHH',) + tuple(map(int, key.split('.'))))
- content = self._content
- rev = historicalRevision(content, serial)
- rev = rev.__of__(content.aq_parent)
- if withContext is False :
- return rev, DateTime(rev._p_mtime)
- else :
- ctx = {}
- if isinstance(withContext, int) :
- first = max(withContext-1, 0)
- entries = self.listEntries(first=first, last=withContext+2)
-
- if len(entries) == 3 :
- ctx['next'], ctx['current'], ctx['previous'] = entries
- elif len(entries) == 2 :
- serials = [e['tid'] for e in entries]
- i = serials.index(serial)
- if i == 0 :
- # last (newest) transaction
- ctx['current'], ctx['previous'] = entries
- else :
- ctx['next'], ctx['current'] = entries
- elif len(entries) == 1 :
- ctx['current'] = entries[0]
- return rev, ctx
-
-
- security.declareProtected(ViewHistory, 'compare')
- def compare(self, leftkey, rightkey):
- raise NotImplementedError
-
-
- security.declareProtected(ModifyPortalContent, 'restore')
- def restore(self, key):
- raise NotImplementedError
-
-InitializeClass(ContentHistory)
\ No newline at end of file
projects / Plinn.git / blobdiff