From 705c4cb50eea66585cc95c7314001fce9dd197cd Mon Sep 17 00:00:00 2001
From: Stefan Suhren <suhren.stefan@fh-swf.de>
Date: Tue, 5 May 2015 19:34:39 +0200
Subject: Initial commit

---
 .../Symfony/Component/Config/ConfigCache.php       | 126 +++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 vendor/symfony/config/Symfony/Component/Config/ConfigCache.php

(limited to 'vendor/symfony/config/Symfony/Component/Config/ConfigCache.php')

diff --git a/vendor/symfony/config/Symfony/Component/Config/ConfigCache.php b/vendor/symfony/config/Symfony/Component/Config/ConfigCache.php
new file mode 100644
index 0000000..ebf107f
--- /dev/null
+++ b/vendor/symfony/config/Symfony/Component/Config/ConfigCache.php
@@ -0,0 +1,126 @@
+<?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;
+
+use Symfony\Component\Config\Resource\ResourceInterface;
+use Symfony\Component\Filesystem\Exception\IOException;
+use Symfony\Component\Filesystem\Filesystem;
+
+/**
+ * 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 bool   $debug Whether debugging is enabled or not
+     */
+    public function __construct($file, $debug)
+    {
+        $this->file = $file;
+        $this->debug = (bool) $debug;
+    }
+
+    /**
+     * Gets the cache file path.
+     *
+     * @return string The cache file path
+     */
+    public function __toString()
+    {
+        return $this->file;
+    }
+
+    /**
+     * Checks if the cache is still fresh.
+     *
+     * This method always returns true when debug is off and the
+     * cache file exists.
+     *
+     * @return bool true if the cache is fresh, false otherwise
+     */
+    public function isFresh()
+    {
+        if (!is_file($this->file)) {
+            return false;
+        }
+
+        if (!$this->debug) {
+            return true;
+        }
+
+        $metadata = $this->getMetaFile();
+        if (!is_file($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 ResourceInterface[] $metadata An array of ResourceInterface instances
+     *
+     * @throws \RuntimeException When cache file can't be written
+     */
+    public function write($content, array $metadata = null)
+    {
+        $mode = 0666;
+        $umask = umask();
+        $filesystem = new Filesystem();
+        $filesystem->dumpFile($this->file, $content, null);
+        try {
+            $filesystem->chmod($this->file, $mode, $umask);
+        } catch (IOException $e) {
+            // discard chmod failure (some filesystem may not support it)
+        }
+
+        if (null !== $metadata && true === $this->debug) {
+            $filesystem->dumpFile($this->getMetaFile(), serialize($metadata), null);
+            try {
+                $filesystem->chmod($this->getMetaFile(), $mode, $umask);
+            } catch (IOException $e) {
+                // discard chmod failure (some filesystem may not support it)
+            }
+        }
+    }
+
+    /**
+     * Gets the meta file path.
+     *
+     * @return string The meta file path
+     */
+    private function getMetaFile()
+    {
+        return $this->file.'.meta';
+    }
+}
-- 
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