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plugldr.h

00001 /*
00002     Copyright (C) 1998-2001 by Jorrit Tyberghein
00003 
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public
00015     License along with this library; if not, write to the Free
00016     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017 */
00018 
00019 #ifndef __CS_PLUGLDR_H__
00020 #define __CS_PLUGLDR_H__
00021 
00022 #include "csextern.h"
00023 #include "parray.h"
00024 #include "util.h"
00025 
00026 struct iObjectRegistry;
00027 
00031 struct csPluginLoadRec
00032 {
00033   char* Tag;
00034   char* ClassID;
00035   csRef<iBase> plugin;
00036 
00037   csPluginLoadRec (const char* iTag, const char* iClassID)
00038   { Tag = csStrNew (iTag); ClassID = csStrNew (iClassID); }
00039   ~csPluginLoadRec ()
00040   { delete [] ClassID; delete [] Tag; }
00041 };
00042 
00046 class CS_CSUTIL_EXPORT csPluginList : public csPDelArray<csPluginLoadRec>
00047 {
00048 public:
00049   bool Sort (iObjectRegistry* object_reg);
00050 private:
00051   bool RecurseSort (iObjectRegistry*, size_t row, size_t* order, size_t* loop,
00052     bool *matrix);
00053 };
00054 
00059 class CS_CSUTIL_EXPORT csPluginLoader
00060 {
00061   friend class csPluginList;
00062 
00063 private:
00064   // The object registry.
00065   iObjectRegistry* object_reg;
00066   // Requested plugins.
00067   csPluginList requested_plugins;
00068 
00069 public:
00071   csPluginLoader (iObjectRegistry* object_reg);
00073   virtual ~csPluginLoader ();
00074 
00085   void RequestPlugin (const char* pluginName, const char* tagName);
00086 
00088   bool LoadPlugins ();
00089 };
00090 
00091 #endif // __CS_PLUGLDR_H__
00092 

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