diff -r 000000000000 -r 7f95f8617b0b vendor/assetic/src/Assetic/Cache/ExpiringCache.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/assetic/src/Assetic/Cache/ExpiringCache.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,60 @@
+<?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\Cache;
+
+/**
+ * Adds expiration to a cache backend.
+ *
+ * @author Kris Wallsmith <kris.wallsmith@gmail.com>
+ */
+class ExpiringCache implements CacheInterface
+{
+    private $cache;
+    private $lifetime;
+
+    public function __construct(CacheInterface $cache, $lifetime)
+    {
+        $this->cache = $cache;
+        $this->lifetime = $lifetime;
+    }
+
+    public function has($key)
+    {
+        if ($this->cache->has($key)) {
+            if (time() < $this->cache->get($key.'.expires')) {
+                return true;
+            }
+
+            $this->cache->remove($key.'.expires');
+            $this->cache->remove($key);
+        }
+
+        return false;
+    }
+
+    public function get($key)
+    {
+        return $this->cache->get($key);
+    }
+
+    public function set($key, $value)
+    {
+        $this->cache->set($key.'.expires', time() + $this->lifetime);
+        $this->cache->set($key, $value);
+    }
+
+    public function remove($key)
+    {
+        $this->cache->remove($key.'.expires');
+        $this->cache->remove($key);
+    }
+}