Pl_Concatenate.hh
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/* Copyright (c) 2005-2015 Jay Berkenbilt
*
* This file is part of qpdf. This software may be distributed under
* the terms of version 2 of the Artistic License which may be found
* in the source distribution. It is provided "as is" without express
* or implied warranty.
*/
#ifndef __PL_CONCATENATE_HH__
#define __PL_CONCATENATE_HH__
// This pipeline will drop all regular finished calls rather than
// passing them onto next. To finish downstream streams, call
// manualFinish. This makes it possible to pipe multiple streams
// (e.g. with QPDFObjectHandle::pipeStreamData) to a downstream like
// Pl_Flate that can't handle multiple calls to finish().
#include <qpdf/Pipeline.hh>
class Pl_Concatenate: public Pipeline
{
public:
QPDF_DLL
Pl_Concatenate(char const* identifier, Pipeline* next);
QPDF_DLL
virtual ~Pl_Concatenate();
QPDF_DLL
virtual void write(unsigned char* data, size_t len);
QPDF_DLL
virtual void finish();
// At the very end, call manualFinish to actually finish the rest of
// the pipeline.
QPDF_DLL
void manualFinish();
};
#endif // __PL_CONCATENATE_HH__