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memfile.h

00001 /*
00002     Copyright (C) 2000 by Eric Sunshine <sunshine@sunshineco.com>
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 
00022 #include "csextern.h"
00023 #include "iutil/vfs.h"
00024 
00029 class CS_CRYSTALSPACE_EXPORT csMemFile : public iFile
00030 {
00031 public:
00033   enum Disposition
00034   {
00036     DISPOSITION_DELETE,
00038     DISPOSITION_FREE,
00040     DISPOSITION_IGNORE
00041   };
00042 
00043 public:
00045   csMemFile();
00047   csMemFile(const char*, size_t);
00049   csMemFile(char*, size_t, Disposition = DISPOSITION_DELETE);
00051   virtual ~csMemFile();
00052 
00054   virtual const char* GetName();
00056   virtual size_t GetSize();
00058   virtual int GetStatus();
00059 
00061   virtual size_t Read(char* Data, size_t DataSize);
00063   virtual size_t Write(const char* Data, size_t DataSize);
00065   virtual void Flush();
00067   virtual bool AtEOF();
00069   virtual size_t GetPos();
00071   virtual bool SetPos(size_t);
00072 
00078   virtual csPtr<iDataBuffer> GetAllData(bool nullterm = false);
00083   virtual const char* GetData() const;
00084 
00085   SCF_DECLARE_IBASE;
00086 
00087 protected:
00088   Disposition disposition;
00089   char* buffer;
00090   size_t capacity;
00091   size_t size;
00092   size_t cursor;
00093   virtual void FreeBuffer();
00094 };
00095 
00096 #endif // __CS_MEMFILE_H__

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