1<?php 2/** 3 * Utilities for handling plugins 4 * 5 * @license GPL 2 (http://www.gnu.org/licenses/gpl.html) 6 * @author Andreas Gohr <andi@splitbrain.org> 7 */ 8 9/** 10 * prints needed HTML to include plugin CSS and JS files 11 */ 12function plugin_printCSSJS(){ 13 $plugins = plugin_list(); 14 foreach ($plugins as $p){ 15 $dir = "lib/plugins/$p/"; 16 if(@file_exists(DOKU_INC.$dir.'style.css')){ 17 print ' <link rel="stylesheet" type="text/css" href="'.DOKU_BASE.$dir.'style.css" />'."\n"; 18 } 19 if(@file_exists(DOKU_INC.$dir.'screen.css')){ 20 print ' <link rel="stylesheet" media="screen" type="text/css" href="'.DOKU_BASE.$dir.'screen.css" />'."\n"; 21 } 22 if(@file_exists(DOKU_INC.$dir.'print.css')){ 23 print ' <link rel="stylesheet" media="print" type="text/css" href="'.DOKU_BASE.$dir.'print.css" />'."\n"; 24 } 25 if(@file_exists(DOKU_INC.$dir.'script.js')){ 26 print ' <script type="text/javascript" language="javascript" charset="utf-8" src="'.DOKU_BASE.$dir.'script.js"></script>'."\n"; 27 } 28 } 29} 30 31/** 32 * Returns a list of available plugins of given type 33 * 34 * Returns all plugins if no type given 35 * 36 * @author Andreas Gohr <andi@splitbrain.org> 37 */ 38function plugin_list($type=''){ 39 $plugins = array(); 40 if ($dh = opendir(DOKU_PLUGIN)) { 41 while (false !== ($plugin = readdir($dh))) { 42 if ($plugin == '.' || $plugin == '..') continue; 43 if (is_file(DOKU_PLUGIN.$plugin)) continue; 44 45 if ($type=='' || @file_exists(DOKU_PLUGIN."$plugin/$type.php")){ 46 $plugins[] = $plugin; 47 } else { 48 if ($dp = @opendir(DOKU_PLUGIN."$plugin/$type/")) { 49 while (false !== ($component = readdir($dp))) { 50 if ($component == '.' || $component == '..' || strtolower(substr($component, -4)) != ".php") continue; 51 if (is_file(DOKU_PLUGIN."$plugin/$type/$component")) { 52 $plugins[] = $plugin.'_'.substr($component, 0, -4); 53 } 54 } 55 closedir($dp); 56 } 57 } 58 } 59 closedir($dh); 60 } 61 return $plugins; 62} 63 64/** 65 * Loads the given plugin and creates an object of it 66 * 67 * @author Andreas Gohr <andi@splitbrain.org> 68 * 69 * @param $type string type of plugin to load 70 * @param $name string name of the plugin to load 71 * @return objectreference the plugin object or null on failure 72 */ 73function &plugin_load($type,$name){ 74 //we keep all loaded plugins available in global scope for reuse 75 global $DOKU_PLUGINS; 76 77 78 //plugin already loaded? 79 if($DOKU_PLUGINS[$type][$name] != null){ 80 return $DOKU_PLUGINS[$type][$name]; 81 } 82 83 //try to load the wanted plugin file 84 if(!@include_once(DOKU_PLUGIN."$name/$type.php")){ 85 list($plugin, $component) = preg_split("/_/",$name, 2); 86 if (!$component || !@include_once(DOKU_PLUGIN."$plugin/$type/$component.php")) { 87 return null; 88 } 89 } 90 91 //construct class and instanciate 92 $class = $type.'_plugin_'.$name; 93 if (!class_exists($class)) return null; 94 95 $DOKU_PLUGINS[$type][$name] = new $class; 96 return $DOKU_PLUGINS[$type][$name]; 97} 98