basics of the command interpreter

darcs-hash:20081004021442-5ed1f-2f60065150426995707e7cf48ca08d59ec175905.gz
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Evan Prodromou 2008-10-03 22:14:42 -04:00
parent f9bc366190
commit 8c0c7f6a50

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