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<?php
/**
* Utilities for handling plugins
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <andi@splitbrain.org>
*/
/**
* Returns a list of available plugins of given type
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function plugin_list($type){
$plugins = array();
if ($dh = opendir(DOKU_PLUGIN)) {
while (false !== ($file = readdir($dh))) {
if ($file == '.' || $file == '..') continue;
if (is_file(DOKU_PLUGIN.$file)) continue;
if (@file_exists(DOKU_PLUGIN.$file.'/'.$type.'.php')){
$plugins[] = $file;
}
}
closedir($dh);
}
return $plugins;
}
/**
* Loads the given plugin and creates an object of it
*
* @author Andreas Gohr <andi@splitbrain.org>
*
* @param $type string type of plugin to load
* @param $name string name of the plugin to load
* @param $ref ref will contain the plugin object
* @return boolean plugin loading successful?
*/
function plugin_load($type,$name,&$ref){
//we keep all loaded plugins available in global scope for reuse
global $DOKU_PLUGINS;
//plugin already loaded?
if($DOKU_PLUGINS[$type][$name] != null){
$ref = $DOKU_PLUGINS[$type][$name];
return true;
}
//try to load the wanted plugin file
if(!include_once(DOKU_PLUGIN.$name.'/'.$type.'.php')){
return false;
}
//construct class and instanciate
$class = $type.'_plugin_'.$name;
$DOKU_PLUGINS[$type][$name] = new $class;
$ref = $DOKU_PLUGINS[$type][$name];
return true;
}
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