source: box/trunk/lib/server/ProtocolUncertainStream.h @ 1868

// --------------------------------------------------------------------------
//
// File
//              Name:    ProtocolUncertainStream.h
//              Purpose: Read part of another stream
//              Created: 2003/12/05
//
// --------------------------------------------------------------------------

#ifndef PROTOCOLUNCERTAINSTREAM__H
#define PROTOCOLUNCERTAINSTREAM__H

#include "IOStream.h"

// --------------------------------------------------------------------------
//
// Class
//              Name:    ProtocolUncertainStream
//              Purpose: Read part of another stream
//              Created: 2003/12/05
//
// --------------------------------------------------------------------------
class ProtocolUncertainStream : public IOStream
{
public:
        ProtocolUncertainStream(IOStream &rSource);
        ~ProtocolUncertainStream();
private:
        // no copying allowed
        ProtocolUncertainStream(const IOStream &);
        ProtocolUncertainStream(const ProtocolUncertainStream &);
        
public:
        virtual int Read(void *pBuffer, int NBytes, int Timeout = IOStream::TimeOutInfinite);
        virtual pos_type BytesLeftToRead();
        virtual void Write(const void *pBuffer, int NBytes);
        virtual bool StreamDataLeft();
        virtual bool StreamClosed();

private:
        IOStream &mrSource;
        int mBytesLeftInCurrentBlock;
        bool mFinished;
};

#endif // PROTOCOLUNCERTAINSTREAM__H