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vfscache.h

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00001 /*
00002     Copyright (C) 2002 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_UTIL_VFSCACHE_H__
00020 #define __CS_UTIL_VFSCACHE_H__
00021 
00025 #include "csextern.h"
00026 #include "iutil/cache.h"
00027 #include "csutil/csstring.h"
00028 
00029 struct iObjectRegistry;
00030 struct iVFS;
00031 
00035 class CS_CRYSTALSPACE_EXPORT csVfsCacheManager : public iCacheManager
00036 {
00037 private:
00038   iObjectRegistry* object_reg;
00039   char* vfsdir;
00040   char* current_type;
00041   char* current_scope;
00042   csRef<iVFS> vfs;
00043   bool readonly;
00044 
00045   iVFS* GetVFS ();
00046 
00047   void CacheName (csStringFast<512>& buf, const char* type, const char* scope,
00048         uint32 id);
00049 
00050 public:
00055   csVfsCacheManager (iObjectRegistry* object_reg, const char* vfsdir);
00056 
00057   virtual ~csVfsCacheManager ();
00058 
00059   SCF_DECLARE_IBASE;
00060 
00061   virtual void SetReadOnly (bool ro) { readonly = ro; }
00062   virtual bool IsReadOnly () const { return readonly; }
00063 
00067   virtual void SetCurrentType (const char* type);
00071   virtual const char* GetCurrentType () const { return current_type; }
00075   virtual void SetCurrentScope (const char* scope);
00079   virtual const char* GetCurrentScope () const { return current_scope; }
00083   virtual bool CacheData (const void* data, size_t size,
00084         const char* type, const char* scope, uint32 id);
00089   virtual csPtr<iDataBuffer> ReadCache (const char* type, const char* scope,
00090         uint32 id);
00094   virtual bool ClearCache (const char* type = 0, const char* scope = 0,
00095         const uint32* id = 0);
00096 
00100   virtual void Flush ();
00101 };
00102 
00103 #endif // __CS_UTIL_VFSCACHE_H__
00104 

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