/* * The ManaPlus Client * Copyright (C) 2004-2009 The Mana World Development Team * Copyright (C) 2009-2010 The Mana Developers * Copyright (C) 2011 The ManaPlus Developers * * This file is part of The ManaPlus Client. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef NET_MESSAGEOUT_H #define NET_MESSAGEOUT_H #include <SDL_types.h> #include <iosfwd> #ifdef __GNUC__ #define A_UNUSED __attribute__ ((unused)) #else #define A_UNUSED #endif namespace Net { /** * Used for building an outgoing message. * * \ingroup Network */ class MessageOut { public: virtual void writeInt8(Sint8 value); /**< Writes a byte. */ virtual void writeInt16(Sint16 value) = 0; /**< Writes a short. */ virtual void writeInt32(Sint32 value) = 0; /**< Writes a long. */ /** * Writes a string. If a fixed length is not given (-1), it is stored * as a short at the start of the string. */ virtual void writeString(const std::string &string, int length = -1); /** * Returns the content of the message. */ virtual char *getData() const; /** * Returns the length of the data. */ virtual unsigned int getDataSize() const; virtual ~MessageOut() { } protected: /** * Constructor. */ MessageOut(short id); /** * Expand the packet data to be able to hold more data. * * NOTE: For performance enhancements this method could allocate extra * memory in advance instead of expanding size every time more data is * added. */ virtual void expand(size_t size) = 0; char *mData; /**< Data building up. */ unsigned int mDataSize; /**< Size of data. */ unsigned int mPos; /**< Position in the data. */ }; } #endif // NET_MESSAGEOUT_H