gnu-social/lib/plugin.php
2011-02-03 10:36:25 -05:00

165 lines
4.7 KiB
PHP

<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Utility class for plugins
*
* PHP version 5
*
* LICENCE: 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/>.
*
* @category Plugin
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2008 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
/**
* Base class for plugins
*
* A base class for StatusNet plugins. Mostly a light wrapper around
* the Event framework.
*
* Subclasses of Plugin will automatically handle an event if they define
* a method called "onEventName". (Well, OK -- only if they call parent::__construct()
* in their constructors.)
*
* They will also automatically handle the InitializePlugin and CleanupPlugin with the
* initialize() and cleanup() methods, respectively.
*
* @category Plugin
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*
* @see Event
*/
class Plugin
{
function __construct()
{
Event::addHandler('InitializePlugin', array($this, 'initialize'));
Event::addHandler('CleanupPlugin', array($this, 'cleanup'));
foreach (get_class_methods($this) as $method) {
if (mb_substr($method, 0, 2) == 'on') {
Event::addHandler(mb_substr($method, 2), array($this, $method));
}
}
$this->setupGettext();
}
function initialize()
{
return true;
}
function cleanup()
{
return true;
}
/**
* Checks if this plugin has localization that needs to be set up.
* Gettext localizations can be called via the _m() helper function.
*/
protected function setupGettext()
{
$class = get_class($this);
if (substr($class, -6) == 'Plugin') {
$name = substr($class, 0, -6);
$path = common_config('plugins', 'locale_path');
if (!$path) {
// @fixme this will fail for things installed in local/plugins
// ... but then so will web links so far.
$path = INSTALLDIR . "/plugins/$name/locale";
}
if (file_exists($path) && is_dir($path)) {
bindtextdomain($name, $path);
bind_textdomain_codeset($name, 'UTF-8');
}
}
}
protected function log($level, $msg)
{
common_log($level, get_class($this) . ': '.$msg);
}
protected function debug($msg)
{
$this->log(LOG_DEBUG, $msg);
}
function name()
{
$cls = get_class($this);
return mb_substr($cls, 0, -6);
}
function onPluginVersion(&$versions)
{
$name = $this->name();
$versions[] = array('name' => $name,
// TRANS: Displayed as version information for a plugin if no version information was found.
'version' => _('Unknown'));
return true;
}
function path($relative)
{
return self::staticPath($this->name(), $relative);
}
static function staticPath($plugin, $relative)
{
$isHTTPS = StatusNet::isHTTPS();
if ($isHTTPS) {
$server = common_config('plugins', 'sslserver');
} else {
$server = common_config('plugins', 'server');
}
if (is_null($server)) {
if ($isHTTPS) {
$server = common_config('site', 'sslserver');
} else {
$server = common_config('site', 'server');
}
}
$path = common_config('plugins', 'path');
if (is_null($path)) {
$path = common_config('site', 'path') . '/plugins/';
}
$protocol = ($isHTTPS) ? 'https' : 'http';
return $protocol.'://'.$server.$path.$plugin.'/'.$relative;
}
}