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// Copyright (c) 2005-2014 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_BUFFER_HH__
#define __PL_BUFFER_HH__
// This pipeline accumulates the data passed to it into a memory
// buffer. Each subsequent use of this buffer appends to the data
// accumulated so far. getBuffer() may be called only after calling
// finish() and before calling any subsequent write(). At that point,
// a dynamically allocated Buffer object is returned and the internal
// buffer is reset. The caller is responsible for deleting the
// returned Buffer.
//
// For this pipeline, "next" may be null. If a next pointer is
// provided, this pipeline will also pass the data through to it.
#include <qpdf/Pipeline.hh>
#include <qpdf/PointerHolder.hh>
#include <qpdf/Buffer.hh>
#include <list>
class Pl_Buffer: public Pipeline
{
public:
QPDF_DLL
Pl_Buffer(char const* identifier, Pipeline* next = 0);
QPDF_DLL
virtual ~Pl_Buffer();
QPDF_DLL
virtual void write(unsigned char*, size_t);
QPDF_DLL
virtual void finish();
// Each call to getBuffer() resets this object -- see notes above.
// The caller is responsible for deleting the returned Buffer
// object.
QPDF_DLL
Buffer* getBuffer();
private:
bool ready;
std::list<PointerHolder<Buffer> > data;
size_t total_size;
};
#endif // __PL_BUFFER_HH__
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