gnu-social/lib/commandinterpreter.php

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