smartBuffer.h

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/******************************************************************************
** Copyright (c) 1992-2010 VT MAK
** All rights reserved.
******************************************************************************/


#ifndef smartBuffer_H_
#define smartBuffer_H_

#include "lgrUtil.h"
#include "memoryBuffer.h"

namespace MAKLogger
{

   class DT_DLL_LGRUTIL DtSmartBuffer
   {
   public:
      explicit DtSmartBuffer(const DtMemoryBufferSP& parentBuffer);

      DtSmartBuffer(const DtMemoryBufferSP& parentBuffer, size_t offset, size_t size);

      ~DtSmartBuffer();

      DtMemoryBufferSP buffer() const;

      void setBuffer(const DtMemoryBufferSP& buffer);

      void* data();

      const void* data() const;

      size_t size() const;

      void resize(size_t);

      size_t availableSize() const;

      size_t currentOffset() const;

      void increaseOffset(int offsetInBytes);

      void setOffset(int offsetInBytes);

      void resetOffset();

   private:
      DtMemoryBufferSP myBuffer;
      void*  mySubData;
      size_t mySize;
   };

}

#endif