OW_HTTPDeflateOStream.hpp

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#ifndef OW_HTTPDEFLATEOSTREAM_HPP_INCLUDE_GUARD_
#define OW_HTTPDEFLATEOSTREAM_HPP_INCLUDE_GUARD_
#include "OW_config.h"
#ifdef OW_HAVE_ZLIB_H
#include "OW_BaseStreamBuffer.hpp"
#include "OW_AutoPtr.hpp"
#include "OW_Types.hpp"

#ifdef OW_HAVE_OSTREAM
 #include <ostream>
#elif defined(OW_HAVE_OSTREAM_H)
 #include <ostream.h>
#else
 #include <iostream>
#endif

#include <zlib.h>

namespace OW_NAMESPACE
{

class OW_HTTP_API HTTPDeflateOStreamBuffer : public BaseStreamBuffer
{
public:
   HTTPDeflateOStreamBuffer(std::ostream& ostr);
   virtual ~HTTPDeflateOStreamBuffer();
   void termOutput(); 
protected:
   virtual int sync();
   virtual int buffer_to_device(const char *, int) ;
private:
   std::ostream& m_ostr;
   z_stream m_zstr;
   enum { m_outBufSize = HTTP_BUF_SIZE };
   Bytef m_outBuf[m_outBufSize];
   int flushOutBuf(int flush = 0);
   int writeToStream();
   // disallow copying and assigning
   HTTPDeflateOStreamBuffer(const HTTPDeflateOStreamBuffer&);
   HTTPDeflateOStreamBuffer& operator=(const HTTPDeflateOStreamBuffer&);
};
class OW_HTTP_API HTTPDeflateOStreamBase
{
public:
   HTTPDeflateOStreamBase(std::ostream& ostr)
      : m_strbuf(ostr) {}
   HTTPDeflateOStreamBuffer m_strbuf;
};
class OW_HTTP_API HTTPDeflateOStream : private HTTPDeflateOStreamBase, public std::ostream
{
public:
   HTTPDeflateOStream(std::ostream& ostr);
   std::ostream& getOutputStreamOrig() { return m_ostr; };
   void termOutput() { m_strbuf.termOutput(); }
private:
   std::ostream& m_ostr;
   // disallow copying and assigning
   HTTPDeflateOStream(const HTTPDeflateOStream&);
   HTTPDeflateOStream& operator=(const HTTPDeflateOStream&);
};

} // end namespace OW_NAMESPACE

#endif

#endif // #ifdef OW_HAVE_ZLIB_H

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