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# csutil/memfile.h

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    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
    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__