PacketFactory.h

00001 /*
00002 
00003 Copyright (C) 2006-2007 by Peter Dimov.
00004 
00005 This file is part of Calitko (http://www.calitko.org).
00006 
00007 Calitko is free software; you can redistribute it and/or modify
00008 it under the terms of the GNU General Public License as published by
00009 the Free Software Foundation; either version 2 of the License, or
00010 (at your option) any later version.
00011 
00012 Calitko is distributed in the hope that it will be useful,
00013 but WITHOUT ANY WARRANTY; without even the implied warranty of
00014 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015 GNU General Public License for more details.
00016 
00017 You should have received a copy of the GNU General Public License
00018 along with Calitko; if not, write to the Free Software
00019 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00020 
00021 */
00022 
00023 #ifndef PROTOCOLS__GENERICS__PACKET_FACTORY_H
00024 #define PROTOCOLS__GENERICS__PACKET_FACTORY_H
00025 
00026 #include "Imports.h"
00027 #include "Packet.h"
00028 
00029 namespace Protocols {
00030 namespace Generics {
00031 
00033 
00051 class PacketFactory
00052 {
00053 public:
00054                                 PacketFactory();
00055     virtual                     ~PacketFactory();
00056 
00057     bool                        extractPacket (const QByteArray &rawBytes,
00058                                                int &headerLength,
00059                                                int &payloadLength,
00060                                                int &trailerLength);
00061     Packet                      createPacket (const QByteArray &rawHeader,
00062                                               const QByteArray &rawPayload,
00063                                               const QByteArray &rawTrailer);
00064 
00065 protected:
00066     virtual bool                doExtractPacket (const QByteArray &rawBytes,
00067                                                  int &headerLength,
00068                                                  int &payloadLength,
00069                                                  int &trailerLength) = 0;
00070     virtual Packet              doCreatePacket (const QByteArray &rawHeader,
00071                                                     const QByteArray &rawPayload,
00072                                                     const QByteArray &rawTrailer
00073                                                     ) = 0;
00074 };
00075 
00076 } // namespace Generics
00077 } // namespace Protocols
00078 
00079 #endif // PROTOCOLS__GENERICS__PACKET_FACTORY_H