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/* -*- mode: C++; tab-width: 4 -*- */
/* ================================================================================== */
/* Copyright (c) 1998-1999 3Com Corporation or its subsidiaries. All rights reserved. */
/* ================================================================================== */
#ifndef STREAMHANDLE_H_
#define STREAMHANDLE_H_
#include "ErrorHandling.h" // ErrCode
class FileReference;
enum SeekMode
{
kSeekSet,
kSeekCur,
kSeekEnd
};
class StreamHandle
{
public:
StreamHandle (void);
virtual ~StreamHandle (void);
virtual void SetPos (uae_s32 offset, SeekMode) = 0;
virtual uae_s32 GetPos (void) = 0;
virtual uae_s32 GetLength (void) = 0;
virtual void Read (uae_s32 length, void* buffer) = 0;
virtual void Write (uae_s32 length, const void* buffer);
Bool IsFile (void) { return false; }
Bool GetFileRef (FileReference& f);
protected:
void Throw (ErrCode);
};
class BufferHandle : public StreamHandle
{
public:
BufferHandle (void* data,
uae_s32 size);
virtual ~BufferHandle (void);
virtual void SetPos (long offset, SeekMode);
virtual uae_s32 GetPos (void) { return fPos; }
virtual uae_s32 GetLength (void) { return fSize; }
virtual void Read (uae_s32 length, void* buffer);
private:
// Copy constructor disabled
BufferHandle (const BufferHandle&);
char* fData;
uae_s32 fSize;
uae_s32 fPos;
};
#endif // STREAMHANDLE_H_
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