gnu-social/lib/plugin.php

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<?php
/**
* StatusNet, the distributed open-source microblogging tool
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*
* 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.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
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exit(1);
}
/**
* Base class for plugins
*
* A base class for StatusNet plugins. Mostly a light wrapper around
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* 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>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*
* @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();
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}
function initialize()
{
return true;
}
function cleanup()
{
return true;
}
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/**
* 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);
$path = INSTALLDIR . "/plugins/$name/locale";
if (file_exists($path) && is_dir($path)) {
bindtextdomain($name, $path);
}
}
}
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protected function log($level, $msg)
{
common_log($level, get_class($this) . ': '.$msg);
}
protected function debug($msg)
{
$this->log(LOG_DEBUG, $msg);
}
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function onPluginVersion(&$versions)
{
$cls = get_class($this);
$name = mb_substr($cls, 0, -6);
$versions[] = array('name' => $name,
'version' => _('Unknown'));
return true;
}
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}