--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/assetic/src/Assetic/Factory/Resource/CoalescingDirectoryResource.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,112 @@
+<?php
+
+/*
+ * This file is part of the Assetic package, an OpenSky project.
+ *
+ * (c) 2010-2011 OpenSky Project Inc
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Assetic\Factory\Resource;
+
+/**
+ * Coalesces multiple directories together into one merged resource.
+ *
+ * @author Kris Wallsmith <kris.wallsmith@gmail.com>
+ */
+class CoalescingDirectoryResource implements IteratorResourceInterface
+{
+    private $directories;
+
+    public function __construct($directories)
+    {
+        $this->directories = array();
+
+        foreach ($directories as $directory) {
+            $this->addDirectory($directory);
+        }
+    }
+
+    public function addDirectory(IteratorResourceInterface $directory)
+    {
+        $this->directories[] = $directory;
+    }
+
+    public function isFresh($timestamp)
+    {
+        foreach ($this->getFileResources() as $file) {
+            if (!$file->isFresh($timestamp)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    public function getContent()
+    {
+        $parts = array();
+        foreach ($this->getFileResources() as $file) {
+            $parts[] = $file->getContent();
+        }
+
+        return implode("\n", $parts);
+    }
+
+    /**
+     * Returns a string to uniquely identify the current resource.
+     *
+     * @return string An identifying string
+     */
+    public function __toString()
+    {
+        $parts = array();
+        foreach ($this->directories as $directory) {
+            $parts[] = (string) $directory;
+        }
+
+        return implode(',', $parts);
+    }
+
+    public function getIterator()
+    {
+        return new \ArrayIterator($this->getFileResources());
+    }
+
+    /**
+     * Returns the relative version of a filename.
+     *
+     * @param ResourceInterface $file      The file
+     * @param ResourceInterface $directory The directory
+     *
+     * @return string The name to compare with files from other directories
+     */
+    protected function getRelativeName(ResourceInterface $file, ResourceInterface $directory)
+    {
+        return substr((string) $file, strlen((string) $directory));
+    }
+
+    /**
+     * Performs the coalesce.
+     *
+     * @return array An array of file resources
+     */
+    private function getFileResources()
+    {
+        $paths = array();
+
+        foreach ($this->directories as $directory) {
+            foreach ($directory as $file) {
+                $relative = $this->getRelativeName($file, $directory);
+
+                if (!isset($paths[$relative])) {
+                    $paths[$relative] = $file;
+                }
+            }
+        }
+
+        return array_values($paths);
+    }
+}