Fixed bugs with task runner classes

Fixed strict errors in foreground and background task classes.

lib/RippingCluster/Source/PluginFactory.class.php

@@ -0,0 +1,41 @@
+<?php
+
+class RippingCluster_Source_PluginFactory extends RippingCluster_PluginFactory {
+    
+    const PLUGIN_DIR       = 'RippingCluster/Source/Plugin/';
+    const PLUGIN_PREFIX    = 'RippingCluster_Source_Plugin_';
+    const PLUGIN_INTERFACE = 'RippingCluster_Source_IPlugin';
+    
+    public static function init() {
+        
+    }
+    
+    public static function scan() {
+        $candidatePlugins   = parent::findPlugins(self::PLUGIN_DIR);
+        
+        self::loadPlugins($candidatePlugins, self::PLUGIN_PREFIX, self::PLUGIN_INTERFACE);
+    }
+    
+    public static function load($plugin, $source_filename, $scan = true, $use_cache = true) {
+        self::ensureScanned();
+        
+        if ( ! self::isValidPlugin($plugin)) {
+            return null;
+        }
+        
+        return call_user_func(array(self::classname($plugin), 'load'), $source_filename, $scan, $use_cache);
+    }
+    
+    public static function loadEncoded($plugin, $encoded_filename, $scan = true, $use_cache = true) {
+        self::ensureScanned();
+        
+        if ( ! self::isValidPlugin($plugin)) {
+            return null;
+        }
+        
+        return call_user_func(array(self::classname($plugin), 'loadEncoded'), $encoded_filename, $scan, $use_cache);
+    }
+    
+}
+
+?>