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mk4io.h

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00001 // mk4io.h --
00002 // $Id: mk4io.h,v 1.5 2003/11/23 01:42:50 wcvs Exp $
00003 // This is part of Metakit, the homepage is http://www.equi4.com/metakit/
00004 
00009 #ifndef __MK4IO_H__
00010 #define __MK4IO_H__
00011 
00012 #include <stdio.h>
00013 
00016 
00017 class c4_FileStream : public c4_Stream
00018 {
00019 public:
00020     c4_FileStream (FILE* stream_, bool owned_ =false);
00021     virtual ~c4_FileStream ();
00022 
00023     virtual int Read(void* buffer_, int length_);
00024     virtual bool Write(const void* buffer_, int length_);
00025 
00026     FILE* _stream;
00027     bool _owned;
00028 };
00029 
00032 
00033 class c4_FileStrategy : public c4_Strategy
00034 {     
00035 public:
00037     c4_FileStrategy (FILE* file_ =0);
00038     virtual ~c4_FileStrategy ();
00039 
00041     virtual bool IsValid() const;
00043     virtual bool DataOpen(const char* fileName_, int mode_);
00045     virtual int  DataRead(t4_i32 pos_, void* buffer_, int length_);
00047     virtual void DataWrite(t4_i32 pos_, const void* buffer_, int length_);
00049     virtual void DataCommit(t4_i32 newSize_);
00051     virtual void ResetFileMapping();
00053     virtual t4_i32 FileSize();
00055     virtual t4_i32 FreshGeneration();
00056 
00057 protected:
00059     FILE* _file;
00061     FILE* _cleanup;
00062 };
00063 
00065 
00066 #endif // __MK4IO_H__


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