/*
 Eteria IRC Client, an RFC 1459 compliant client program written in Java.
 Copyright (C) 2000-2001  Javier Kohen <jkohen at tough.com>
 
 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
 (at your option) 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, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
 
 package ar.com.jkohen.irc;
 
 import java.awt.Color;
 
 public class Modes
 {
 	/**
 	 * Returns a canonical representation of <code>nick</code>, that is, without the mode character.
 	 *
 	 * @param nick the nick name to canonicalize.
 	 */
 	 
 	static public String canonicalizeNick(String nick)
 	{
 		char ch = nick.charAt(0);
 
 		if (User.NORMAL_MASK == symbolicToMask(ch))
 			return nick;
 		else
 			return nick.substring(1);
 	}
 
 
 	/**
 	 * Prepends a symbolic char to <code>nick</code> depending on the <code>mask</code> provided.
 	 *
 	 * @param nick the nick name to uncanonicalize.
 	 * @param mask the user mode mask corresponding to nick.
 	 */
 	 
 	static public String uncanonicalizeNick(String nick, int mask)
 	{
 		return maskToSymbolic(mask).concat(nick);
 	}
 
 
 	static public int symbolicToMask(char symbol)
 	{
 		switch (symbol)
 		{
 		case '~':
 			return User.OWNER_MASK;
 		case '&':
 			return User.ADMIN_MASK;
 		case '@':
 			return User.OP_MASK;
 		case '%':
 			return User.HALFOP_MASK;
 		case '+':
 			return User.VOICE_MASK;
 		default:
 			return User.NORMAL_MASK;
 		}
 	}
 
 	static public String maskToSymbolic(int mask)
 	{
 		if ((User.OWNER_MASK & mask) != 0)
 		{
 			return "~";
 		}
 		else if ((User.ADMIN_MASK & mask) != 0)
 		{
 			return "&";
 		}
 		else if ((User.OP_MASK & mask) != 0)
 		{
 			return "@";
 		}
 		else if ((User.HALFOP_MASK & mask) != 0)
 		{
 			return "%";
 		}
 		else if ((User.VOICE_MASK & mask) != 0)
 		{
 			return "+";
 		}
 
 		return "";
 	}
 
 	static public int alphaToMask(char ch)
 	{
 		switch (ch)
 		{
 		case 'q':
 			return User.OWNER_MASK;
 		case 'a':
 			return User.ADMIN_MASK;
 		case 'o':
 			return User.OP_MASK;
 		case 'h':
 			return User.HALFOP_MASK;
 		case 'v':
 			return User.VOICE_MASK;
 		default:
 			return User.NORMAL_MASK;
 		}
 	}
 
 	static public String maskToAlpha(int mask)
 	{
 		if ((User.OWNER_MASK & mask) != 0)
 		{
 			return "q";
 		}
 		else if ((User.ADMIN_MASK & mask) != 0)
 	   	{
 			return "a";
 		}
 		else if ((User.OP_MASK & mask) != 0)
 		{
 			return "o";
 		}
 		else if ((User.HALFOP_MASK & mask) != 0)
 		{
 			return "h";
 		}
 		else if ((User.VOICE_MASK & mask) != 0)
 		{
 			return "v";
 		}
 
 		return "";
 	}
 }