Helper.h

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00001 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
00002 /* Helper.h
00003  *
00004  * Static helpers
00005  *
00006  * Copyright (C) 2000-2002 Ximian, Inc.
00007  * Copyright (C) 2005 SUSE Linux Products GmbH
00008  *
00009  * This program is free software; you can redistribute it and/or
00010  * modify it under the terms of the GNU General Public License,
00011  * version 2, as published by the Free Software Foundation.
00012  *
00013  * This program is distributed in the hope that it will be useful, but
00014  * WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016  * General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU General Public License
00019  * along with this program; if not, write to the Free Software
00020  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00021  * 02111-1307, USA.
00022  */
00023 
00024 #ifndef ZYPP_SOLVER_DETAIL_HELPER_H
00025 #define ZYPP_SOLVER_DETAIL_HELPER_H
00026 
00027 #include <iosfwd>
00028 
00029 #include "zypp/ResPool.h"
00030 #include "zypp/PoolItem.h"
00031 #include "zypp/Capabilities.h"
00032 #include "zypp/base/String.h"
00033 #include "zypp/solver/detail/Types.h"
00034 
00036 namespace zypp
00037 { 
00038 
00039   namespace solver
00040   { 
00041 
00042     namespace detail
00043     { 
00044 
00046 //
00047 //      CLASS NAME : Helper
00048 
00049 class Helper {
00050   public:
00051 
00052     // for name, find installed item which has same name
00053     // does *NOT* check edition
00054     //  FIXME: should probably take provides/obsoletes into account for
00055     //         renamed upgrades
00056     static PoolItem findInstalledByNameAndKind (const ResPool & pool, const std::string & name, const Resolvable::Kind & kind);
00057 
00058     // for name, find uninstalled item which has same name
00059     static PoolItem findUninstalledByNameAndKind (const ResPool & pool, const std::string & name, const Resolvable::Kind & kind);
00060 
00061     // for item, find installed item which has same name -> calls findInstalledByNameAndKind()
00062     // does *NOT* check edition
00063     //  FIXME: should probably take provides/obsoletes into account for
00064     //         renamed upgrades
00065     static PoolItem findInstalledItem (const ResPool & pool, PoolItem item);
00067     static PoolItem findInstalledItem (const std::vector<PoolItem> & pool, PoolItem item);
00068 
00069     // for item, find uninstalled item which has same name and higher edition
00070     static PoolItem findUninstalledItem (const ResPool & pool, PoolItem item);
00071 
00072     // for item, find uninstalled item which has same name and equal edition
00073     static PoolItem findReinstallItem (const ResPool & pool, PoolItem item);
00074 
00075     static PoolItem findUpdateItem (const ResPool & pool, PoolItem item);
00077     static PoolItem findUpdateItem (const std::vector<PoolItem> & pool, PoolItem item);
00078 
00079     // for item, check if this is the 'best' uninstalled (best arch, best version) item
00080     static bool isBestUninstalledItem (const ResPool & pool, PoolItem item);
00081 
00082     // Human readable item
00083     static std::string itemToString (PoolItem item, bool shortVersion=false);
00084     static std::string capToString (const Capability & capability);
00085 
00086     friend std::ostream& operator<<(std::ostream&, const PoolItemList & itemlist);
00087 
00088 };
00089 
00091     };// namespace detail
00094   };// namespace solver
00097 };// namespace zypp
00099 
00100 #endif // ZYPP_SOLVER_DETAIL_HELPER_H
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