/************************************************************************* * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * Copyright 2000, 2010 Oracle and/or its affiliates. * * OpenOffice.org - a multi-platform office productivity suite * * This file is part of OpenOffice.org. * * OpenOffice.org is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License version 3 * only, as published by the Free Software Foundation. * * OpenOffice.org 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 Lesser General Public License version 3 for more details * (a copy is included in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU Lesser General Public License * version 3 along with OpenOffice.org. If not, see * <http://www.openoffice.org/license.html> * for a copy of the LGPLv3 License. * ************************************************************************/ There are three extensions in various versions: 1 version_XXX/plain.oxt has no dependencies and no license. 2a version_XXX/dependency.oxt has an unsatisfied dependency and no license. 2b version_nodependencies_XXX/dependency.oxt is identical to 2a but without the dependency. 3 version_XXX/license.oxt has no dependencies and a license. The different versions are: A version_none contains no version element (treated as version "0"). B version_badelement contains a bad <version val="1"/> (not allowed by the specification, but treated by the current implementation as version "0"). C version_badvalue contains a bad <version value="1.a"/> (not allowed by the specification, but treated by the current implementation as version "1"). D version_0.0 contains <version value="0.0"/> (same as version "0"). E version_1.2.3 contains <version value="1.2.3"/>. F version_1.2.4.7 contains <version value="1.2.4.7"/>. G version_1.02.4.7.0 contains <version value="1.02.4.7.0"/> (same as version "1.2.4.7"). H version_1.2.15.3 contains <version value="1.2.15.3"/>. The total order among the various versions is thus A = B = D < C < E < F = G < H. Things to watch for: - If version y of extension e is to be installed and version x < y of extension e is already installed, then unopkg add e will replace x with y. - If version y of extension e is to be installed and version x >= y of extension e is already installed, then unopkg add e will fail with an error message. - If version y of extension e is to be installed and any version x of extension e is already installed, then unopkg add -f e will replace x with y. - If version y of extension e is to be installed and any version x of extension e is already installed, then unopkg gui "Add..." and soffice "Tools - Package Manager... - Add..." will query with a dialog whether to replace x with y. The dialog will have "OK" (replace) preselected if x < y, and "Cancel" otherwise. - If replacing an installed version x of an extension e with a version y fails because y has unsatisfied dependencies, or because y has a license to wich the user does not agree, version x is left installed afterwards. - Checking for already installed versions of an extension is only done within a single layer (unopkg versus unopkg --shared; "My Packages" versus "OpenOffice Packages" in unopkg gui/soffice), not across layers.