/*
 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
 */
 
 import java.util.*;
 
 public class Commands extends ListResourceBundle
 {
 	// Always use lower case for command tags! (See getCommand method below.)
 	
 	private static final Object [][] contents =
 	{
 		// Standard IRC commands.
 		
 	 	{ "admin", new Command("ADMIN", 0, 1) },
 		{ "away", new Command("AWAY", 0, 1) },
 		{ "connect", new Command("CONNECT", 1, 3) },
 		{ "info", new Command("INFO", 0, 1) },
 		{ "invite", new Command("INVITE", 2) },
 		{ "ison", new Command("ISON", 1) },
 		{ "join", new Command("JOIN", 1, 2) },
 		{ "kick", new Command("KICK", 2, 3) },
 		{ "kill", new Command("KILL", 2) },
 		{ "links", new Command("LINKS", 0, 2) },
 		{ "list", new Command("LIST", 0, 2) },
 		{ "lusers", new Command("LUSERS", 0, 2) },
 		{ "mode", new Command("MODE", 1, 20) },
 		{ "motd", new Command("MOTD", 0, 1) },
 		{ "names", new Command("NAMES", 0, 2) },
 		{ "notice", new Command("NOTICE", 2) },
 		{ "nick", new Command("NICK", 1) },
 		{ "oper", new Command("OPER", 2) },
 		{ "part", new Command("PART", 0, 2) },
 		{ "ping", new Command("PING", 1) },
 		{ "privmsg", new Command("PRIVMSG", 2) },
 		{ "quit", new Command("QUIT", 0, 1) },
 		{ "rehash", new Command("REHASH", 0, 1) },
 		{ "restart", new Command("RESTART", 0) },
 		{ "squit", new Command("SQUIT", 2) },
 		{ "stats", new Command("STATS", 0, 2) },
 		{ "time", new Command("TIME", 0, 1) },
 		{ "topic", new Command("TOPIC", 1, 2) },
 		{ "trace", new Command("TRACE", 0, 1) },
 		{ "userhost", new Command("USERHOST", 1) },
 		{ "version", new Command("VERSION", 0, 1) },
 		{ "who", new Command("WHO", 0, 2) },
 		{ "whois", new Command("WHOIS", 1, 2) },
 		{ "whowas", new Command("WHOWAS", 1, 3) },
 
 		// Internally handled commands.
 		
 		{ "charset", new Command("CHARSET", 0, 1) },
 		{ "clear", new Command("CLEAR", 0, 0) },
 		{ "ctcp", new Command("CTCP", 2) },
 		{ "debug", new Command("DEBUG", 1) },
 		{ "eirc", new Command("EIRC", 0) },
 		{ "ghost", new Command("GHOST", 2) },
 		{ "help", new Command("HELP", 0, 1) },
 		{ "ignore", new Command("IGNORE", 0, 1)  },
 		{ "j", "join" },
 		{ "kban", new Command("KBAN", 1, 3) },
 		{ "me", new Command("ME", 1) },
 		{ "msg", "privmsg" },
 		{ "pingtime", new Command("PINGTIME", 1) },
 		{ "q", "query" },
 		{ "query", new Command("QUERY", 1, 2) },
 		{ "quote", new Command("QUOTE", 1) },
 		{ "save", new Command("SAVE", 0, 1) },
 		{ "server", new Command("SERVER", 1, 3) },
 		{ "serverssl", new Command("SERVERSSL", 1, 3) },
 		{ "unignore", new Command("UNIGNORE", 1) },
 		{ "w", "whois" },
 	};
 
 	public Object [][] getContents()
 	{
 		return contents;
 	}
 
 	/**
 	 * Parses command-line style input.
 	 *
 	 * @param text the string to parse.
 	 * @return a <code>String</code> array filled with the command name, followed by its parameters.
 	 * @throws MissingResourceException if the command can't be found by Commands.getCommand().
 	 * @throws IllegalArgumentException if there are missing parameters.
 	 */
 
 	public static String [] parseCommand(ResourceBundle cmds, String text) throws MissingResourceException, IllegalArgumentException
 	{
 		StringTokenizer st = new StringTokenizer(text);
 
 		/* Find command description. */
 
 		// The next line may throw a MissingResourceException.
 		Command c = Commands.getCommand(cmds, st.nextToken());
 		String action = c.getTag();
 		int required = c.getRequiredParameters();
 		int accepted = c.getAcceptedParameters();
 
 		Vector result = new Vector();
 
 		result.addElement(action);
 
 		/* Parse parameters. */
 
 		final int tokens = st.countTokens();
 		if (tokens < required)
 			throw new IllegalArgumentException("insuficient parameters");
 
 		// Add parameters, omit last one because it needs special parsing.
 		for (int i = 0; i < Math.min(accepted, tokens) - 1; i++)
 			result.addElement(st.nextToken());
 
 		if (tokens > 0)
 		{
 			// Add the last parameter, which is allowed to contain spaces.
 			String tok = st.nextToken("");
 			result.addElement(tok.trim());
 		}
 
 		String [] ret = new String [result.size()];
 		result.copyInto(ret);
 
 		return ret;
 	}
 
 	/**
 	 * This method resolves Command aliases.
 	 */
 
 	public static Command getCommand(ResourceBundle cmds, String key) throws MissingResourceException	 
 	{			
 		Object o = key.toLowerCase(Locale.US);
 
 		while ((o = cmds.getObject((String) o)) instanceof String);
 		return (Command) o;
 	}
 }