more refactoring on the framework.

laravel/session/drivers/file.php

@@ -0,0 +1,80 @@
+<?php namespace Laravel\Session\Drivers;
+
+class File extends Driver implements Sweeper {
+
+	/**
+	 * The file engine instance.
+	 *
+	 * @var Laravel\File
+	 */
+	private $file;
+
+	/**
+	 * The path to which the session files should be written.
+	 *
+	 * @var string
+	 */
+	private $path;
+
+	/**
+	 * Create a new File session driver instance.
+	 *
+	 * @param  Laravel\File  $file
+	 * @param  string        $path
+	 * @return void
+	 */
+	public function __construct(\Laravel\File $file, $path)
+	{
+		$this->file = $file;
+		$this->path = $path;
+	}
+
+	/**
+	 * Load a session by ID.
+	 *
+	 * @param  string  $id
+	 * @return array
+	 */
+	protected function load($id)
+	{
+		if ($this->file->exists($path = $this->path.$id)) return unserialize($this->file->get($path));
+	}
+
+	/**
+	 * Save the session to persistant storage.
+	 *
+	 * @return void
+	 */
+	protected function save()
+	{
+		$this->file->put($this->path.$this->session['id'], serialize($this->session), LOCK_EX);
+	}
+
+	/**
+	 * Delete the session from persistant storage.
+	 *
+	 * @return void
+	 */
+	protected function delete()
+	{
+		$this->file->delete($this->path.$this->session['id']);
+	}
+
+	/**
+	 * Delete all expired sessions from persistant storage.
+	 *
+	 * @param  int   $expiration
+	 * @return void
+	 */
+	public function sweep($expiration)
+	{
+		foreach (glob($this->path.'*') as $file)
+		{
+			if ($this->file->type($file) == 'file' and $this->file->modified($file) < $expiration)
+			{
+				$this->file->delete($file);
+			}
+		}
+	}
+	
+}