basics of the command interpreter
darcs-hash:20081004021442-5ed1f-2f60065150426995707e7cf48ca08d59ec175905.gz
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Evan Prodromou
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classes/CommandInterpreter.php
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336
classes/CommandInterpreter.php
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<?php
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/*
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* Laconica - a distributed open-source microblogging tool
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* Copyright (C) 2008, Controlez-Vous, 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('LACONICA')) { exit(1); }
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class CommandInterpreter {
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function handle_command($user, $text) {
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# XXX: localise
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$text = preg_replace('/\s+/', ' ', trim($text));
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list($cmd, $arg) = explode(' ', $text, 2);
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# We try to support all the same commands as Twitter, see
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# http://getsatisfaction.com/twitter/topics/what_are_the_twitter_commands
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# There are a few compatibility commands from earlier versions of
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# Laconica
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switch(strtolower($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 'on':
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if ($arg) {
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list($other, $extra) = explode(' ', $arg, 2);
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if ($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) = explode(' ', $arg, 2);
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if ($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 '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) = explode(' ', $arg, 2);
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if ($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) = explode(' ', $arg, 2);
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if ($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) = explode(' ', $arg, 2);
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if ($extra) {
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return NULL;
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} else {
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return new GetCommand($user, $other);
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}
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case 'd':
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if (!$arg) {
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return NULL;
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}
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list($other, $extra) = explode(' ', $arg, 2);
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if (!$extra) {
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return NULL;
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} else {
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return new MessageCommand($user, $other, $extra);
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}
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case 'whois':
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if (!$arg) {
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return NULL;
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}
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list($other, $extra) = explode(' ', $arg, 2);
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if ($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) = explode(' ', $arg, 2);
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if ($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) = explode(' ', $arg, 2);
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if ($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) = explode(' ', $arg, 2);
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if ($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) = explode(' ', $arg, 2);
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if ($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) = explode(' ', $arg, 2);
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if ($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($user);
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default:
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return false;
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}
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}
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}
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class Channel {
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function on($user) {
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}
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function off($user) {
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}
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function output($user) {
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}
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function error($user) {
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}
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}
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class Command {
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var $user = NULL;
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function __construct($user=NULL) {
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$this->user = $user;
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}
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function execute($channel) {
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return false;
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}
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}
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class UnimplementedCommand extends Command {
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function execute($channel) {
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$channel->error(_("Sorry, this command is not yet implemented."));
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}
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}
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class TrackingCommand extends UnimplementedCommand {
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}
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class TrackOffCommand extends UnimplementedCommand {
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}
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class TrackCommand extends UnimplementedCommand {
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var $word = NULL;
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function __construct($user, $word) {
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parent::__construct($user);
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$this->word = $word;
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}
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}
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class UntrackCommand extends UnimplementedCommand {
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var $word = NULL;
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function __construct($user, $word) {
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parent::__construct($user);
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$this->word = $word;
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}
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}
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class NudgeCommand extends UnimplementedCommand {
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var $other = NULL;
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function __construct($user, $other) {
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parent::__construct($user);
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$this->other = $other;
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}
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}
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class InviteCommand extends UnimplementedCommand {
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var $other = NULL;
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function __construct($user, $other) {
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parent::__construct($user);
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$this->other = $other;
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}
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}
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class StatsCommand extends UnimplementedCommand {
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}
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class FaveCommand extends UnimplementedCommand {
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var $other = NULL;
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function __construct($user, $other) {
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parent::__construct($user);
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$this->other = $other;
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}
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}
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class WhoisCommand extends UnimplementedCommand {
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var $other = NULL;
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function __construct($user, $other) {
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parent::__construct($user);
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$this->other = $other;
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}
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}
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class MessageCommand extends UnimplementedCommand {
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var $other = NULL;
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var $text = NULL;
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function __construct($user, $other, $text) {
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parent::__construct($user);
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$this->other = $other;
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$this->text = $other;
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}
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}
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class GetCommand extends UnimplementedCommand {
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var $other = NULL;
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function __construct($user, $other) {
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parent::__construct($user);
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$this->other = $other;
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}
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}
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class SubCommand extends UnimplementedCommand {
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var $other = NULL;
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function __construct($user, $other) {
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parent::__construct($user);
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$this->other = $other;
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}
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}
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class UnsubCommand extends UnimplementedCommand {
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var $other = NULL;
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function __construct($user, $other) {
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parent::__construct($user);
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$this->other = $other;
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}
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}
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class OffCommand extends UnimplementedCommand {
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var $other = NULL;
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function __construct($user, $other=NULL) {
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parent::__construct($user);
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$this->other = $other;
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}
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}
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class OnCommand extends UnimplementedCommand {
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var $other = NULL;
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function __construct($user, $other=NULL) {
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parent::__construct($user);
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$this->other = $other;
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}
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}
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class HelpCommand extends UnimplementedCommand {
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}
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