OW_HTTPDeflateIStream.hpp

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#ifndef OW_HTTPDEFLATEISTREAM_HPP_INCLUDE_GUARD_
#define OW_HTTPDEFLATEISTREAM_HPP_INCLUDE_GUARD_
#include "OW_config.h"
#ifdef OW_HAVE_ZLIB_H
#include "OW_CIMProtocolIStreamIFC.hpp"
#include "OW_BaseStreamBuffer.hpp"
#include "OW_AutoPtr.hpp"
#include "OW_IfcsFwd.hpp"
#include <zlib.h>

namespace OW_NAMESPACE
{

class OW_HTTP_API HTTPDeflateIStreamBuffer : public BaseStreamBuffer
{
public:
   HTTPDeflateIStreamBuffer(std::istream& istr);
   ~HTTPDeflateIStreamBuffer();
protected:
   virtual int buffer_from_device(char *, int);
private:
   std::istream& m_istr;
   z_stream m_zstr;
   enum { m_inBufSize = HTTP_BUF_SIZE };

   Bytef m_inBuf[m_inBufSize];
   // don't allow copying and assigning
   HTTPDeflateIStreamBuffer(const HTTPDeflateIStreamBuffer&);
   HTTPDeflateIStreamBuffer& operator=(HTTPDeflateIStreamBuffer&);
};
class OW_HTTP_API HTTPDeflateIStreamBase
{
public:
   HTTPDeflateIStreamBase(std::istream& istr)
      : m_strbuf(istr) {}
   HTTPDeflateIStreamBuffer m_strbuf;
};
class OW_HTTP_API HTTPDeflateIStream : private HTTPDeflateIStreamBase,
   public CIMProtocolIStreamIFC
{
public:
   HTTPDeflateIStream(const CIMProtocolIStreamIFCRef& istr);
   CIMProtocolIStreamIFCRef getInputStreamOrig();
   // TODO: Move all this knowledge about CIM and specific trailers into HTTPClient
   virtual void checkForError() const;
private:

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

   CIMProtocolIStreamIFCRef m_istr;

#ifdef OW_WIN32
#pragma warning (pop)
#endif

   // don't allow copying and assigning
   HTTPDeflateIStream(const HTTPDeflateIStream&);
   HTTPDeflateIStream& operator=(HTTPDeflateIStream&);
};

} // end namespace OW_NAMESPACE

#endif
#endif // #ifdef OW_HAVE_ZLIB_H

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