eb7e3ee528
Regressions caused by bad refactoring in commit 21feac3bea.
Test cases in tests/CommandInterpreterTest.php were made against the pre-refactoring code, and now check out with the fixed code.
Failures were caused by not changing logic structure when moving from multiple exit points (each if point would return directly with a null or an object) to setting a result variable and then falling through to a common exit point. Without the if statements being restructured, the result variable would just get overridden by the next case.
335 lines
11 KiB
PHP
335 lines
11 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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$cmd = strtolower($cmd);
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if (Event::handle('StartIntepretCommand', array($cmd, $arg, $user, &$result))) {
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switch($cmd) {
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case 'help':
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if ($arg) {
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$result = null;
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} else {
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$result = new HelpCommand($user);
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}
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break;
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case 'login':
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if ($arg) {
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$result = null;
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} else {
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$result = new LoginCommand($user);
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}
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break;
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case 'lose':
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if ($arg) {
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list($other, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else {
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$result = new LoseCommand($user, $other);
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}
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} else {
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$result = null;
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}
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break;
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case 'subscribers':
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if ($arg) {
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$result = null;
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} else {
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$result = new SubscribersCommand($user);
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}
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break;
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case 'subscriptions':
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if ($arg) {
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$result = null;
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} else {
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$result = new SubscriptionsCommand($user);
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}
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break;
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case 'groups':
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if ($arg) {
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$result = null;
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} else {
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$result = new GroupsCommand($user);
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}
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break;
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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 ($extra) {
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$result = null;
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} else {
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$result = new OnCommand($user, $other);
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}
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} else {
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$result = new OnCommand($user);
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}
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break;
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case 'off':
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if ($arg) {
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list($other, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else {
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$result = new OffCommand($user, $other);
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}
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} else {
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$result = new OffCommand($user);
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}
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break;
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case 'stop':
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case 'quit':
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if ($arg) {
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$result = null;
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} else {
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$result = new OffCommand($user);
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}
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break;
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case 'join':
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if (!$arg) {
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$result = null;
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} else {
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list($other, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else {
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$result = new JoinCommand($user, $other);
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}
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}
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break;
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case 'drop':
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if (!$arg) {
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$result = null;
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} else {
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list($other, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else {
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$result = new DropCommand($user, $other);
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}
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}
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break;
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case 'follow':
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case 'sub':
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if (!$arg) {
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$result = null;
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} else {
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list($other, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else {
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$result = new SubCommand($user, $other);
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}
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}
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break;
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case 'leave':
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case 'unsub':
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if (!$arg) {
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$result = null;
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} else {
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list($other, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else {
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$result = new UnsubCommand($user, $other);
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}
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}
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break;
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case 'get':
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case 'last':
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if (!$arg) {
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$result = null;
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}
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list($other, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else {
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$result = new GetCommand($user, $other);
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}
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break;
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case 'd':
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case 'dm':
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if (!$arg) {
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$result = null;
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}
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list($other, $extra) = $this->split_arg($arg);
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if (!$extra) {
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$result = null;
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} else {
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$result = new MessageCommand($user, $other, $extra);
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}
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break;
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case 'r':
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case 'reply':
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if (!$arg) {
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$result = null;
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}
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list($other, $extra) = $this->split_arg($arg);
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if (!$extra) {
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$result = null;
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} else {
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$result = new ReplyCommand($user, $other, $extra);
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}
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break;
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case 'repeat':
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case 'rp':
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case 'rt':
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case 'rd':
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if (!$arg) {
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$result = null;
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} else {
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list($other, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else {
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$result = new RepeatCommand($user, $other);
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}
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}
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break;
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case 'whois':
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if (!$arg) {
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$result = null;
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} else {
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list($other, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else {
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$result = new WhoisCommand($user, $other);
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}
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}
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break;
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case 'fav':
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if (!$arg) {
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$result = null;
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} else {
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list($other, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else {
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$result = new FavCommand($user, $other);
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}
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}
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break;
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case 'nudge':
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if (!$arg) {
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$result = null;
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} else {
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list($other, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else {
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$result = new NudgeCommand($user, $other);
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}
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}
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break;
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case 'stats':
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if ($arg) {
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$result = null;
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} else {
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$result = new StatsCommand($user);
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}
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break;
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case 'invite':
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if (!$arg) {
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$result = null;
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} else {
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list($other, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else {
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$result = new InviteCommand($user, $other);
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}
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}
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break;
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case 'track':
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if (!$arg) {
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$result = null;
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} else {
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list($word, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else if ($word == 'off') {
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$result = new TrackOffCommand($user);
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} else {
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$result = new TrackCommand($user, $word);
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}
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}
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break;
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case 'untrack':
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if (!$arg) {
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$result = null;
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} else {
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list($word, $extra) = $this->split_arg($arg);
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if ($extra) {
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$result = null;
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} else if ($word == 'all') {
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$result = new TrackOffCommand($user);
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} else {
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$result = new UntrackCommand($user, $word);
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}
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}
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break;
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case 'tracks':
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case 'tracking':
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if ($arg) {
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$result = null;
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} else {
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$result = new TrackingCommand($user);
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}
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break;
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default:
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$result = false;
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}
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Event::handle('EndInterpretCommand', array($cmd, $arg, $user, $result));
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}
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return $result;
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}
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/**
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* Split arguments without triggering a PHP notice warning
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*/
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function split_arg($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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