278 lines
		
	
	
		
			8.0 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			278 lines
		
	
	
		
			8.0 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/*
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 * StatusNet - the distributed open-source microblogging tool
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 * Copyright (C) 2008, 2009, StatusNet, Inc.
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU Affero General Public License as published by
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 * the Free Software Foundation, either version 3 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU Affero General Public License for more details.
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 *
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 * You should have received a copy of the GNU Affero General Public License
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
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require_once INSTALLDIR.'/lib/command.php';
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class CommandInterpreter
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{
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    function handle_command($user, $text)
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    {
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        # XXX: localise
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        $text = preg_replace('/\s+/', ' ', trim($text));
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        list($cmd, $arg) = $this->split_arg($text);
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        # We try to support all the same commands as Twitter, see
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        # http://getsatisfaction.com/twitter/topics/what_are_the_twitter_commands
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        # There are a few compatibility commands from earlier versions of
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        # StatusNet
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        switch(strtolower($cmd)) {
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         case 'help':
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            if ($arg) {
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                return null;
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            }
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            return new HelpCommand($user);
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         case 'login':
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            if ($arg) {
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                return null;
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            } else {
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                return new LoginCommand($user);
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            }
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         case 'subscribers':
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            if ($arg) {
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                return null;
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            } else {
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                return new SubscribersCommand($user);
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            }
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         case 'subscriptions':
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            if ($arg) {
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                return null;
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            } else {
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                return new SubscriptionsCommand($user);
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            }
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         case 'groups':
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            if ($arg) {
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                return null;
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            } else {
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                return new GroupsCommand($user);
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            }
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         case 'on':
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            if ($arg) {
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                list($other, $extra) = $this->split_arg($arg);
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                if ($extra) {
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                    return null;
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                } else {
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                    return new OnCommand($user, $other);
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                }
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            } else {
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                return new OnCommand($user);
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            }
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         case 'off':
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            if ($arg) {
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                list($other, $extra) = $this->split_arg($arg);
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                if ($extra) {
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                    return null;
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                } else {
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                    return new OffCommand($user, $other);
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                }
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            } else {
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                return new OffCommand($user);
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            }
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         case 'stop':
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         case 'quit':
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            if ($arg) {
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                return null;
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            } else {
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                return new OffCommand($user);
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            }
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         case 'join':
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             if (!$arg) {
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                return null;
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            }
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            list($other, $extra) = $this->split_arg($arg);
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            if ($extra) {
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                return null;
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            } else {
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                return new JoinCommand($user, $other);
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            }
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         case 'drop':
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            if (!$arg) {
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                return null;
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            }
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            list($other, $extra) = $this->split_arg($arg);
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            if ($extra) {
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                return null;
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            } else {
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                return new DropCommand($user, $other);
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            }
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         case 'follow':
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         case 'sub':
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            if (!$arg) {
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                return null;
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            }
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            list($other, $extra) = $this->split_arg($arg);
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            if ($extra) {
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                return null;
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            } else {
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                return new SubCommand($user, $other);
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            }
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         case 'leave':
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         case 'unsub':
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            if (!$arg) {
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                return null;
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            }
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            list($other, $extra) = $this->split_arg($arg);
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            if ($extra) {
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                return null;
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            } else {
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                return new UnsubCommand($user, $other);
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            }
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         case 'get':
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         case 'last':
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            if (!$arg) {
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                return null;
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            }
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            list($other, $extra) = $this->split_arg($arg);
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            if ($extra) {
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                return null;
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            } else {
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                return new GetCommand($user, $other);
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            }
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         case 'd':
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         case 'dm':
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            if (!$arg) {
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                return null;
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            }
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            list($other, $extra) = $this->split_arg($arg);
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            if (!$extra) {
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                return null;
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            } else {
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                return new MessageCommand($user, $other, $extra);
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            }
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         case 'r':
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         case 'reply':
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            if (!$arg) {
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                return null;
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            }
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            list($other, $extra) = $this->split_arg($arg);
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            if (!$extra) {
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                return null;
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            } else {
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                return new ReplyCommand($user, $other, $extra);
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            }
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         case 'repeat':
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         case 'rp':
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         case 'rt':
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         case 'rd':
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            if (!$arg) {
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                return null;
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            }
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            list($other, $extra) = $this->split_arg($arg);
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            if ($extra) {
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                return null;
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            } else {
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                return new RepeatCommand($user, $other);
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            }
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         case 'whois':
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            if (!$arg) {
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                return null;
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            }
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            list($other, $extra) = $this->split_arg($arg);
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            if ($extra) {
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                return null;
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            } else {
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                return new WhoisCommand($user, $other);
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            }
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         case 'fav':
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            if (!$arg) {
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                return null;
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            }
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            list($other, $extra) = $this->split_arg($arg);
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            if ($extra) {
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                return null;
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            } else {
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                return new FavCommand($user, $other);
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            }
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         case 'nudge':
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            if (!$arg) {
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                return null;
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            }
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            list($other, $extra) = $this->split_arg($arg);
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            if ($extra) {
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                return null;
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            } else {
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                return new NudgeCommand($user, $other);
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            }
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         case 'stats':
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            if ($arg) {
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                return null;
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            }
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            return new StatsCommand($user);
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         case 'invite':
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            if (!$arg) {
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                return null;
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            }
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            list($other, $extra) = $this->split_arg($arg);
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            if ($extra) {
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                return null;
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            } else {
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                return new InviteCommand($user, $other);
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            }
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         case 'track':
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            if (!$arg) {
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                return null;
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            }
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            list($word, $extra) = $this->split_arg($arg);
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            if ($extra) {
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                return null;
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            } else if ($word == 'off') {
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                return new TrackOffCommand($user);
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            } else {
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                return new TrackCommand($user, $word);
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            }
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         case 'untrack':
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            if (!$arg) {
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                return null;
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            }
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            list($word, $extra) = $this->split_arg($arg);
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            if ($extra) {
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                return null;
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            } else if ($word == 'all') {
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                return new TrackOffCommand($user);
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            } else {
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                return new UntrackCommand($user, $word);
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            }
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         case 'tracks':
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         case 'tracking':
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            if ($arg) {
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                return null;
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            }
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            return new TrackingCommand($user);
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         default:
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            return false;
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        }
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    }
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    /**
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     * Split arguments without triggering a PHP notice warning
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     */
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    function split_arg($text)
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    {
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        $pieces = explode(' ', $text, 2);
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        if (count($pieces) == 1) {
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            $pieces[] = null;
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        }
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        return $pieces;
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    }
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}
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