buffer-stream.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#ifndef NDN_ENCODING_BUFFER_STREAM_HPP
#define NDN_ENCODING_BUFFER_STREAM_HPP

#include "buffer.hpp"

#include <boost/iostreams/categories.hpp>
#include <boost/iostreams/stream.hpp>

namespace ndn {

namespace detail {

class BufferAppendDevice
{
public:
  typedef char char_type;
  typedef boost::iostreams::sink_tag category;

  explicit
  BufferAppendDevice(Buffer& container);

  std::streamsize
  write(const char_type* s, std::streamsize n);

protected:
  Buffer& m_container;
};

} // namespace detail

class OBufferStream : public boost::iostreams::stream<detail::BufferAppendDevice>
{
public:
  OBufferStream();

  ~OBufferStream();

  shared_ptr<Buffer>
  buf();

private:
  BufferPtr m_buffer;
  detail::BufferAppendDevice m_device;
};

} // namespace ndn

#endif // NDN_ENCODING_BUFFER_STREAM_HPP