diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/Config/ConfigCache.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/Config/ConfigCache.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,117 @@
+<?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\Component\Config;
+
+/**
+ * ConfigCache manages PHP cache files.
+ *
+ * When debug is enabled, it knows when to flush the cache
+ * thanks to an array of ResourceInterface instances.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ConfigCache
+{
+    private $debug;
+    private $file;
+
+    /**
+     * Constructor.
+     *
+     * @param string  $file     The absolute cache path
+     * @param Boolean $debug    Whether debugging is enabled or not
+     */
+    public function __construct($file, $debug)
+    {
+        $this->file = $file;
+        $this->debug = (Boolean) $debug;
+    }
+
+    /**
+     * Gets the cache file path.
+     *
+     * @return string The cache file path
+     */
+    public function __toString()
+    {
+        return $this->file;
+    }
+
+    /**
+     * Checks if the cache is still fresh.
+     *
+     * This method always returns true when debug is off and the
+     * cache file exists.
+     *
+     * @return Boolean true if the cache is fresh, false otherwise
+     */
+    public function isFresh()
+    {
+        if (!file_exists($this->file)) {
+            return false;
+        }
+
+        if (!$this->debug) {
+            return true;
+        }
+
+        $metadata = $this->file.'.meta';
+        if (!file_exists($metadata)) {
+            return false;
+        }
+
+        $time = filemtime($this->file);
+        $meta = unserialize(file_get_contents($metadata));
+        foreach ($meta as $resource) {
+            if (!$resource->isFresh($time)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Writes cache.
+     *
+     * @param string $content  The content to write in the cache
+     * @param array  $metadata An array of ResourceInterface instances
+     *
+     * @throws \RuntimeException When cache file can't be wrote
+     */
+    public function write($content, array $metadata = null)
+    {
+        $dir = dirname($this->file);
+        if (!is_dir($dir)) {
+            if (false === @mkdir($dir, 0777, true)) {
+                throw new \RuntimeException(sprintf('Unable to create the %s directory', $dir));
+            }
+        } elseif (!is_writable($dir)) {
+            throw new \RuntimeException(sprintf('Unable to write in the %s directory', $dir));
+        }
+
+        $tmpFile = tempnam(dirname($this->file), basename($this->file));
+        if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $this->file)) {
+            chmod($this->file, 0666);
+        } else {
+            throw new \RuntimeException(sprintf('Failed to write cache file "%s".', $this->file));
+        }
+
+        if (null !== $metadata && true === $this->debug) {
+            $file = $this->file.'.meta';
+            $tmpFile = tempnam(dirname($file), basename($file));
+            if (false !== @file_put_contents($tmpFile, serialize($metadata)) && @rename($tmpFile, $file)) {
+                chmod($file, 0666);
+            }
+        }
+    }
+}