RageFileDriverSlice.h

/* RageFileDriverSlice - Treat a portion of a file as a file. */
 
#ifndef RAGE_FILE_DRIVER_SLICE_H
#define RAGE_FILE_DRIVER_SLICE_H
 
#include "RageFileBasic.h"
 
class RageFileDriverSlice : public RageFileObj
{
  public:
    /* pFile will be freed if DeleteFileWhenFinished is called. */
    RageFileDriverSlice(RageFileBasic* pFile, int iOffset, int iFileSize);
    RageFileDriverSlice(const RageFileDriverSlice& cpy);
    ~RageFileDriverSlice() override;
    RageFileDriverSlice* Copy() const override;
 
    void DeleteFileWhenFinished() { m_bFileOwned = true; }
 
    int ReadInternal(void* pBuffer, size_t iBytes) override;
    int WriteInternal(const void* /* pBuffer */, size_t /* iBytes */) override
    {
        SetError("Not implemented");
        return -1;
    }
    int SeekInternal(int iOffset) override;
    int GetFileSize() const override { return m_iFileSize; }
    int GetFD() override { return m_pFile->GetFD(); }
 
  private:
    RageFileBasic* m_pFile;
    int m_iFilePos;
    int m_iOffset, m_iFileSize;
    bool m_bFileOwned;
};
 
#endif