OW_HTTPChunkedOStream.hpp

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#ifndef OW_HTTPCHUNKEDOSTREAM_HPP_INCLUDE_GUARD_
#define OW_HTTPCHUNKEDOSTREAM_HPP_INCLUDE_GUARD_
#include "OW_config.h"
#include "OW_BaseStreamBuffer.hpp"
#include "OW_Array.hpp"
#include "OW_AutoPtr.hpp"
#include "OW_String.hpp"
#ifdef OW_HAVE_OSTREAM
#include <ostream>
#elif defined(OW_HAVE_OSTREAM_H)
#include <ostream.h>
#else
#include <iostream>
#endif

namespace OW_NAMESPACE
{

class OW_HTTP_API HTTPChunkedOStreamBuffer : public BaseStreamBuffer
{
public: 
   HTTPChunkedOStreamBuffer(std::ostream& ostr);
   virtual ~HTTPChunkedOStreamBuffer();

protected:
   virtual int sync();
private:
   std::ostream& m_ostr;
   virtual int buffer_to_device(const char* c, int n);
   // disallow copying and assigning
   HTTPChunkedOStreamBuffer(const HTTPChunkedOStreamBuffer&);
   HTTPChunkedOStreamBuffer& operator=(const HTTPChunkedOStreamBuffer&);

   friend class HTTPChunkedOStream; // so it can call initPutBuffer()
};
class OW_HTTP_API HTTPChunkedOStreamBase 
{
public:
   HTTPChunkedOStreamBase(std::ostream& ostr)
      : m_strbuf(ostr) {}
   HTTPChunkedOStreamBuffer m_strbuf;
};
class OW_HTTP_API HTTPChunkedOStream : private HTTPChunkedOStreamBase, 
   public std::ostream
{
public:
   HTTPChunkedOStream(std::ostream& ostr);
   
   ~HTTPChunkedOStream();

   enum ESendLastChunkFlag
   {
      E_DISCARD_LAST_CHUNK,
      E_SEND_LAST_CHUNK
   };
   void termOutput(ESendLastChunkFlag sendLastChunk = E_SEND_LAST_CHUNK);
   std::ostream& getOutputStreamOrig() { return m_ostr; };
   void addTrailer(const String& key, const String& value);
private:
   std::ostream& m_ostr;

#ifdef OW_WIN32
#pragma warning (push)
#pragma warning (disable: 4251)
#endif

   Array<String> m_trailers;

#ifdef OW_WIN32
#pragma warning (pop)
#endif

   // disallow copying and assigning
   HTTPChunkedOStream(const HTTPChunkedOStream&);
   HTTPChunkedOStream& operator=(const HTTPChunkedOStream&);
};

} // end namespace OW_NAMESPACE

#endif

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