mirror of https://github.com/qpdf/qpdf.git
47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
// Copyright (c) 2005-2008 Jay Berkenbilt
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//
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// This file is part of qpdf. This software may be distributed under
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// the terms of version 2 of the Artistic License which may be found
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// in the source distribution. It is provided "as is" without express
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// or implied warranty.
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#ifndef __PL_BUFFER_HH__
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#define __PL_BUFFER_HH__
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// This pipeline accumulates the data passed to it into a memory
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// buffer. Each subsequent use of this buffer appends to the data
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// accumulated so far. getBuffer() may be called only after calling
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// finish() and before calling any subsequent write(). At that point,
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// a dynamically allocated Buffer object is returned and the internal
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// buffer is reset. The caller is responseible for deleting the
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// returned Buffer.
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//
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// For this pipeline, "next" may be null. If a next pointer is
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// provided, this pipeline will also pass the data through to it.
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#include <qpdf/Pipeline.hh>
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#include <qpdf/PointerHolder.hh>
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#include <qpdf/Buffer.hh>
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#include <list>
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class Pl_Buffer: public Pipeline
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{
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public:
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Pl_Buffer(char const* identifier, Pipeline* next = 0);
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virtual ~Pl_Buffer();
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virtual void write(unsigned char*, int);
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virtual void finish();
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// Each call to getBuffer() resets this object -- see notes above.
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// The caller is responsible for deleting the returned Buffer
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// object.
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Buffer* getBuffer();
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private:
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bool ready;
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std::list<PointerHolder<Buffer> > data;
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size_t total_size;
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};
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#endif // __PL_BUFFER_HH__
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