source: box/trunk/lib/common/ZeroStream.h @ 1585

// --------------------------------------------------------------------------
//
// File
//              Name:    ZeroStream.h
//              Purpose: An IOStream which returns all zeroes up to a certain size
//              Created: 2007/04/28
//
// --------------------------------------------------------------------------

#ifndef ZEROSTREAM__H
#define ZEROSTREAM__H

#include "IOStream.h"

class ZeroStream : public IOStream
{
private:
        IOStream::pos_type mSize, mPosition;

public:
        ZeroStream(IOStream::pos_type mSize);
        
        virtual int Read(void *pBuffer, int NBytes, int Timeout = IOStream::TimeOutInfinite);
        virtual pos_type BytesLeftToRead();
        virtual void Write(const void *pBuffer, int NBytes);
        virtual pos_type GetPosition() const;
        virtual void Seek(IOStream::pos_type Offset, int SeekType);
        virtual void Close();
        
        virtual bool StreamDataLeft();
        virtual bool StreamClosed();

private:
        ZeroStream(const ZeroStream &rToCopy);
};

#endif // ZEROSTREAM__H