1 files changed, 118 insertions, 0 deletions
diff --git a/src/net/messagein.h b/src/net/messagein.h
new file mode 100644
index 000000000..8781b3050
--- /dev/null
+++ b/src/net/messagein.h
@@ -0,0 +1,118 @@
+/*
+ *  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_MESSAGEIN_H
+#define NET_MESSAGEIN_H
+
+#include <SDL_types.h>
+
+#include <string>
+
+namespace Net
+{
+
+/**
+ * Used for parsing an incoming message.
+ *
+ * \ingroup Network
+ */
+class MessageIn
+{
+    public:
+        /**
+         * Returns the message ID.
+         */
+        int getId() const
+        { return mId; }
+
+        /**
+         * Returns the message length.
+         */
+        unsigned int getLength() const
+        { return mLength; }
+
+        /**
+         * Returns the length of unread data.
+         */
+        unsigned int getUnreadLength() const
+        { return mLength - mPos; }
+
+        virtual unsigned char readInt8();             /**< Reads a byte. */
+        virtual Sint16 readInt16() = 0;        /**< Reads a short. */
+        virtual int readInt32() = 0;        /**< Reads a long. */
+
+        /**
+         * Reads a 3-byte block containing tile-based coordinates. Used by
+         * manaserv.
+         */
+        virtual void readCoordinates(Uint16 &x, Uint16 &y);
+
+        /**
+         * Reads a special 3 byte block used by eAthena, containing x and y
+         * coordinates and direction.
+         */
+        virtual void readCoordinates(Uint16 &x, Uint16 &y, Uint8 &direction);
+
+        /**
+         * Reads a special 5 byte block used by eAthena, containing a source
+         * and destination coordinate pair.
+         */
+        virtual void readCoordinatePair(Uint16 &srcX, Uint16 &srcY,
+                                        Uint16 &dstX, Uint16 &dstY);
+
+        /**
+         * Skips a given number of bytes.
+         */
+        virtual 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.
+         */
+        virtual std::string readString(int length = -1);
+
+        virtual std::string readRawString(int length);
+
+        virtual ~MessageIn()
+        { }
+
+    protected:
+        /**
+         * Constructor.
+         */
+        MessageIn(const char *data, unsigned int length);
+
+        const char *mData;             /**< The message data. */
+        unsigned int mLength;          /**< The length of the data. */
+        unsigned short mId;            /**< The message ID. */
+
+        /**
+         * Actual position in the packet. From 0 to packet->length.
+         * A value bigger than packet->length means EOP was reached when
+         * reading it.
+         */
+        unsigned int mPos;
+};
+
+}
+
+#endif // NET_MESSAGEIN_H