Update

trunk/_vendor/symfony/assetic-bundle/DependencyInjection/DirectoryResourceDefinition.php

@@ -0,0 +1,76 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\AsseticBundle\DependencyInjection;
+
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Reference;
+
+/**
+ * Encapsulates logic for creating a directory resource.
+ *
+ * @author Kris Wallsmith <kris@symfony.com>
+ */
+class DirectoryResourceDefinition extends Definition
+{
+    /**
+     * Constructor.
+     *
+     * @param string $bundle A bundle name or empty string
+     * @param string $engine The templating engine
+     * @param array  $dirs   An array of directories to merge
+     */
+    public function __construct($bundle, $engine, array $dirs)
+    {
+        if (!count($dirs)) {
+            throw new \InvalidArgumentException('You must provide at least one directory.');
+        }
+
+        parent::__construct();
+
+        $this
+            ->addTag('assetic.templating.'.$engine)
+            ->addTag('assetic.formula_resource', array('loader' => $engine));
+        ;
+
+        if (1 == count($dirs)) {
+            // no need to coalesce
+            self::configureDefinition($this, $bundle, $engine, reset($dirs));
+
+            return;
+        }
+
+        // gather the wrapped resource definitions
+        $resources = array();
+        foreach ($dirs as $dir) {
+            $resources[] = $resource = new Definition();
+            self::configureDefinition($resource, $bundle, $engine, $dir);
+        }
+
+        $this
+            ->setClass('%assetic.coalescing_directory_resource.class%')
+            ->addArgument($resources)
+            ->setPublic(false)
+        ;
+    }
+
+    private static function configureDefinition(Definition $definition, $bundle, $engine, $dir)
+    {
+        $definition
+            ->setClass('%assetic.directory_resource.class%')
+            ->addArgument(new Reference('templating.loader'))
+            ->addArgument($bundle)
+            ->addArgument($dir)
+            ->addArgument('/\.[^.]+\.'.$engine.'$/')
+            ->setPublic(false)
+        ;
+    }
+}