bufferreader.hpp

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#pragma once
/*
**  Copyright (C) 2012 Aldebaran Robotics
**  See COPYING for the license
*/

#ifndef _QI_BUFFERREADER_HPP_
#define _QI_BUFFERREADER_HPP_

#include <qi/buffer.hpp>

namespace qi {

  class QI_API BufferReader
  {
  public:
    explicit BufferReader(const Buffer& buf);
    ~BufferReader();
    size_t read(void *data, size_t length);

    void  *read(size_t offset);
    bool   seek(size_t offset);
    void  *peek(size_t offset) const;

    bool hasSubBuffer() const;
    const Buffer& subBuffer();
    size_t position() const;

  private:
    Buffer _buffer;
    size_t _cursor;
    size_t _subCursor; // position in sub-buffers
  };
}

#endif  // _QI_BUFFERREADER_HPP_