Add POC for file storage system

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php

@@ -196,6 +196,7 @@ class FrameworkExtension extends Extension
         $supported = array(
             'sqlite' => 'Symfony\Component\HttpKernel\Profiler\SqliteProfilerStorage',
             'mysql'  => 'Symfony\Component\HttpKernel\Profiler\MysqlProfilerStorage',
+            'file'   => 'Symfony\Component\HttpKernel\Profiler\FileProfilerStorage',
         );
         list($class, ) = explode(':', $config['dsn']);
         if (!isset($supported[$class])) {

src/Symfony/Component/HttpKernel/Profiler/FileProfilerStorage.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace Symfony\Component\HttpKernel\Profiler;
+
+/**
+ * Storage for profiler using files
+ *
+ * @author Alexandre Salomé <alexandre.salome@gmail.com>
+ */
+class FileProfilerStorage implements ProfilerStorageInterface
+{
+    protected $folder;
+
+    public function __construct($dsn)
+    {
+        if (0 !== strpos($dsn, 'file:')) {
+            throw new \InvalidArgumentException("FileStorage DSN must start with file:");
+        }
+        $this->folder = substr($dsn, 5);
+
+        if (!is_dir($this->folder)) {
+            mkdir($this->folder);
+        }
+    }
+
+    public function find($ip, $url, $limit)
+    {
+        throw new \LogicException("Cannot use find-function with file storage");
+    }
+
+    public function purge()
+    {
+        $flags = \FilesystemIterator::SKIP_DOTS;
+        $iterator = new \RecursiveDirectoryIterator($this->folder, $flags);
+
+        foreach ($iterator as $file)
+        {
+            die('ON VA SUPPRIMER ' . $file);
+        }
+    }
+
+    public function read($token)
+    {
+        return unserialize(file_get_contents($this->getFilename($token)));
+    }
+
+    public function write(Profile $profile)
+    {
+        file_put_contents($this->getFilename($profile->getToken()), serialize($profile));
+    }
+
+    protected function getFilename($token)
+    {
+        return $this->folder . '/' . $token;
+    }
+}