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/*
* The Mana World Server
* Copyright 2004 The Mana World Development Team
*
* This file is part of The Mana World.
*
* The Mana World 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.
*
* The Mana World 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 The Mana World; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id$
*/
#include "messageout.h"
#include <iostream>
#include <SDL_net.h>
MessageOut::MessageOut():
mPacket(0),
mData(0),
mDataSize(0),
mPos(0)
{
}
MessageOut::~MessageOut()
{
if (mPacket) {
delete mPacket;
}
if (mData) {
free(mData);
}
}
void
MessageOut::expand(size_t bytes)
{
mData = (char*)realloc(mData, bytes);
mDataSize = bytes;
}
void
MessageOut::writeByte(char value)
{
expand(mPos + sizeof(char));
mData[mPos] = value;
mPos += sizeof(char);
}
void MessageOut::writeShort(short value)
{
expand(mPos + sizeof(short));
SDLNet_Write16(value, &mData[mPos]);
mPos += sizeof(short);
}
void
MessageOut::writeLong(long value)
{
expand(mPos + sizeof(long));
SDLNet_Write32(value, &mData[mPos]);
mPos += sizeof(long);
}
void
MessageOut::writeString(const std::string &string, int length)
{
std::string toWrite = string;
if (length < 0)
{
// Write the length at the start if not fixed
writeShort(string.length());
std::string toWrite = string;
expand(mPos + string.length());
}
else if (length < (int)string.length())
{
// Make sure the length of the string is no longer than specified
toWrite = string.substr(0, length);
expand(mPos + length);
}
// Write the actual string
memcpy(&mData[mPos], (void*)toWrite.c_str(), toWrite.length());
mPos += toWrite.length();
// Pad remaining space with zeros
if (length > (int)toWrite.length())
{
memset(&mData[mPos], '\0', length - toWrite.length());
mPos += length - toWrite.length();
}
}
const Packet*
MessageOut::getPacket()
{
if (!mPacket)
{
mPacket = new Packet(mData, mDataSize);
}
return mPacket;
}
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