csutil/memfile.h

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00001 /*
00002     Copyright (C) 2000 by Eric Sunshine <[email protected]>
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_MEMFILE_H__
00020 #define __CS_MEMFILE_H__
00021 
00026 #include "csextern.h"
00027 #include "csutil/scf_implementation.h"
00028 #include "iutil/vfs.h"
00029 
00034 class CS_CRYSTALSPACE_EXPORT csMemFile : 
00035   public scfImplementation1<csMemFile, iFile>
00036 {
00037 public:
00039   enum Disposition
00040   {
00042     DISPOSITION_DELETE,
00044     DISPOSITION_PLATFORM_FREE,
00046     DISPOSITION_IGNORE,
00048     DISPOSITION_CS_FREE,
00049   #ifndef CS_NO_MALLOC_OVERRIDE
00050 
00054     DISPOSITION_FREE = DISPOSITION_CS_FREE
00055   #else
00056     DISPOSITION_FREE = DISPOSITION_PLATFORM_FREE
00057   #endif
00058   };
00059 
00060 public:
00062   csMemFile();
00064   csMemFile(const char*, size_t);
00070   csMemFile(char*, size_t, Disposition = DISPOSITION_DELETE);
00080   csMemFile(iDataBuffer* buf, bool readOnly);
00082   virtual ~csMemFile();
00083 
00085   virtual const char* GetName();
00086   virtual size_t GetSize();
00087   virtual int GetStatus();
00088 
00089   virtual size_t Read(char* Data, size_t DataSize);
00090   virtual size_t Write(const char* Data, size_t DataSize);
00091   virtual void Flush();
00092   virtual bool AtEOF();
00093   virtual size_t GetPos();
00094   virtual bool SetPos(size_t newpos);
00095 
00096   virtual csPtr<iDataBuffer> GetAllData (bool nullterm = false);
00101   virtual const char* GetData() const;
00102 
00103 protected:
00104   csRef<iDataBuffer> buffer;
00105   size_t size;
00106   size_t cursor;
00107   bool copyOnWrite;
00108 };
00109 
00110 #endif // __CS_MEMFILE_H__
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csutil/memfile.h
