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/*
* The Mana Server
* Copyright (C) 2004-2010 The Mana World Development Team
*
* This file is part of The Mana Server.
*
* The Mana Server 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 Server 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 Server. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MESSAGEIN_H
#define MESSAGEIN_H
#include "common/manaserv_protocol.h"
#include <iosfwd>
/**
* Used for parsing an incoming message.
*/
class MessageIn
{
public:
/**
* Constructor.
*
* @param data the message data
* @param length the length of the data
*/
MessageIn(const char *data, unsigned short length);
/**
* Returns the message ID.
*/
int getId() const { return mId; }
/**
* Returns the total length of this message.
*/
int getLength() const { return mLength; }
int readInt8(); /**< Reads a byte. */
int readInt16(); /**< Reads a short. */
int readInt32(); /**< Reads a long. */
/**
* Reads a double. HACKY and should *not* be used for client
* communication!
*/
double readDouble();
/**
* Reads a string. If a length is not given (-1), it is assumed
* that the length of the string is stored in a short at the
* start of the string.
*/
std::string readString(int length = -1);
/**
* Returns the length of unread data.
*/
int getUnreadLength() const { return mLength - mPos; }
private:
bool readValueType(ManaServ::ValueType type);
const char *mData; /**< Packet data */
unsigned short mLength; /**< Length of data in bytes */
unsigned short mId; /**< The message ID. */
bool mDebugMode; /**< Includes debugging information. */
/**
* Actual position in the packet. From 0 to packet->length. A value
* bigger than packet->length means EOP was reached when reading it.
*/
unsigned short mPos;
/**
* Streams message ID and length to the given output stream.
*
* When the message includes debugging information, prints out
* the message contents instead of the length.
*/
friend std::ostream& operator <<(std::ostream &os,
const MessageIn &msg);
};
#endif
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