/**
* Instantiates a plugin class
*
* @access public
* @param string The ID of the plugin to load
* @param int The owner of the plugin (can be autodetected)
* @param string The path to a plugin (can be autodetected)
* @param string The filename of a plugin (can be autodetected)
* @return
*/
function &load_plugin($instance_id, $authorid = null, $pluginPath = '', $pluginFile = null)
{
global $serendipity;
if ($pluginFile === null) {
$class_name = '';
// $serendipity['debug']['pluginload'][] = "Init probe for plugin $instance_id, $class_name, $pluginPath";
$pluginFile = serendipity_plugin_api::probePlugin($instance_id, $class_name, $pluginPath);
} else {
$is_internal = false;
// $serendipity['debug']['pluginload'][] = "getClassByInstanceID $instance_id, $is_internal";
$class_name = serendipity_plugin_api::getClassByInstanceID($instance_id, $is_internal);
}
if (!class_exists($class_name) && !empty($pluginFile)) {
// $serendipity['debug']['pluginload'][] = "Classname does not exist. Including $pluginFile.";
include $pluginFile;
}
if (!class_exists($class_name)) {
$serendipity['debug']['pluginload'][] = "Classname {$class_name} still does not exist. Aborting.";
return false;
}
// $serendipity['debug']['pluginload'][] = "Returning new $class_name($instance_id)";
$p = new $class_name($instance_id);
if (!is_null($authorid)) {
$p->serendipity_owner = $authorid;
} else {
$sql = "SELECT authorid from {$serendipity['dbPrefix']}plugins WHERE name = '" . $instance_id . "'";
$owner = serendipity_db_query($sql, true);
if (is_array($owner) && isset($owner[0])) {
$p->serendipity_owner = $owner[0];
}
}
$p->pluginPath = $p->act_pluginPath = $pluginPath;
if (empty($p->act_pluginPath)) {
$p->act_pluginPath = $class_name;
}
$p->pluginFile = $pluginFile;
return $p;
}