packet.h

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/*
    
  This file is a part of ENUt, a library containing network
  programming utilities.
  
  Copyright (C) 2006-2008  Hasselt University - Expertise Centre for
                      Digital Media (EDM) (http://www.edm.uhasselt.be)

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  
  USA

*/

#ifndef NUT_PACKET_H

#define NUT_PACKET_H

#include "nutconfig.h"
#include "nuttypes.h"

namespace nut
{

class ENUT_IMPORTEXPORT Packet
{
public:
        Packet()                                                                        { m_pData = 0; m_length = 0; }

        Packet(uint8_t *pData, size_t length)                                           { m_pData = pData; m_length = length; }

        ~Packet()                                                                       { if (m_pData) delete [] m_pData; }

        void setData(uint8_t *pData, size_t length)                                     { if (m_pData) delete [] m_pData; m_pData = pData; m_length = length; }

        const uint8_t *getData() const                                                  { return m_pData; }

        size_t getLength() const                                                        { return m_length; }

        uint8_t *extractData(size_t &length)                                            { uint8_t *pData = m_pData; length = m_length; m_pData = 0; m_length = 0; return pData; }
private:
        // Make sure we don't accidentally copy such objects
        Packet(const Packet &p)                                                         { }
        Packet &operator=(const Packet &p)                                              { return *this; }

        uint8_t *m_pData;
        size_t m_length;
};
        
} // end namespace

#endif // NUT_PACKET_H