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/*
* The Mana Client
* Copyright (C) 2004-2009 The Mana World Development Team
* Copyright (C) 2009-2010 The Mana Developers
*
* This file is part of The Mana 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 _UNUSED_ __attribute__ ((unused))
#else
#define _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
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