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+/*
+ * The Mana World
+ * 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
+ *
+ * $Id$
+ */
+
+#ifndef _TMW_MESSAGEIN_
+#define _TMW_MESSAGEIN_
+
+#include <string>
+
+/**
+ * Used for parsing an incoming message.
+ */
+class MessageIn
+{
+ public:
+ /**
+ * Constructor.
+ */
+ MessageIn(const char *data, unsigned int length);
+
+ /**
+ * Returns the message ID.
+ */
+ short
+ getId() { return mId; }
+
+ /**
+ * Returns the message length.
+ */
+ unsigned int
+ getLength() { return mLength; }
+
+ char readByte(); /**< Reads a byte. */
+ short readShort(); /**< Reads a short. */
+ long readLong(); /**< Reads a long. */
+
+ /**
+ * Reads a special 3 byte block used by eAthena, containing x and y
+ * coordinates and direction.
+ */
+ void
+ readCoordinates(unsigned short &x,
+ unsigned short &y,
+ unsigned char &direction);
+
+ /**
+ * Reads a special 5 byte block used by eAthena, containing a source
+ * and destination coordinate pair.
+ */
+ void
+ readCoordinatePair(unsigned short &srcX, unsigned short &srcY,
+ unsigned short &dstX, unsigned short &dstY);
+
+ /**
+ * Skips a given number of bytes.
+ */
+ void
+ skip(unsigned int length);
+
+ /**
+ * 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);
+
+ private:
+ const char* mData; /**< The message data. */
+ unsigned int mLength; /**< The length of the data. */
+ unsigned int mPos; /**< The position in the data. */
+ short mId; /**< The message ID. */
+};
+
+#endif