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// --------------------------------------------------------------------------
//
// File
// Name: SelfFlushingStream.h
// Purpose: A stream wrapper that always flushes the underlying
// stream, to ensure protocol safety.
// Created: 2008/08/20
//
// --------------------------------------------------------------------------
#ifndef SELFFLUSHINGSTREAM__H
#define SELFFLUSHINGSTREAM__H
#include "IOStream.h"
// --------------------------------------------------------------------------
//
// Class
// Name: SelfFlushingStream
// Purpose: A stream wrapper that always flushes the underlying
// stream, to ensure protocol safety.
// Created: 2008/08/20
//
// --------------------------------------------------------------------------
class SelfFlushingStream : public IOStream
{
public:
SelfFlushingStream(IOStream &rSource)
: mrSource(rSource) { }
SelfFlushingStream(const SelfFlushingStream &rToCopy)
: mrSource(rToCopy.mrSource) { }
~SelfFlushingStream()
{
if(StreamDataLeft())
{
BOX_WARNING("Not all data was read from stream, "
"discarding the rest");
}
Flush();
}
private:
// no copying from IOStream allowed
SelfFlushingStream(const IOStream& rToCopy);
public:
virtual int Read(void *pBuffer, int NBytes,
int Timeout = IOStream::TimeOutInfinite)
{
return mrSource.Read(pBuffer, NBytes, Timeout);
}
virtual pos_type BytesLeftToRead()
{
return mrSource.BytesLeftToRead();
}
virtual void Write(const void *pBuffer, int NBytes,
int Timeout = IOStream::TimeOutInfinite)
{
mrSource.Write(pBuffer, NBytes, Timeout);
}
virtual bool StreamDataLeft()
{
return mrSource.StreamDataLeft();
}
virtual bool StreamClosed()
{
return mrSource.StreamClosed();
}
private:
IOStream &mrSource;
};
#endif // SELFFLUSHINGSTREAM__H
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