refactoring for dependency injection and testability.

laravel/session/file.php

@@ -2,26 +2,69 @@
 
 class File extends Driver implements Sweeper {
 
+	/**
+	 * The file manager instance.
+	 *
+	 * @var Laravel\File
+	 */
+	private $file;
+
+	/**
+	 * Create a new File session driver instance.
+	 *
+	 * @param  Laravel\File  $file
+	 * @return void
+	 */
+	public function __construct(\Laravel\File $file)
+	{
+		$this->file = $file;
+	}
+
+	/**
+	 * Load a session by ID.
+	 *
+	 * The session will be retrieved from persistant storage and returned as an array.
+	 * The array contains the session ID, last activity UNIX timestamp, and session data.
+	 *
+	 * @param  string  $id
+	 * @return array
+	 */
 	protected function load($id)
 	{
-		if (file_exists($path = SESSION_PATH.$id)) return unserialize(file_get_contents($path));
+		if ($this->file->exists($path = SESSION_PATH.$id)) return unserialize($this->file->get($path));
 	}
 
+	/**
+	 * Save the session to persistant storage.
+	 *
+	 * @return void
+	 */
 	protected function save()
 	{
-		file_put_contents(SESSION_PATH.$this->session['id'], serialize($this->session), LOCK_EX);
+		$this->file->put(SESSION_PATH.$this->session['id'], serialize($this->session), LOCK_EX);
 	}
 
+	/**
+	 * Delete the session from persistant storage.
+	 *
+	 * @return void
+	 */
 	protected function delete()
 	{
-		@unlink(SESSION_PATH.$this->session['id']);
+		$this->file->delete(SESSION_PATH.$this->session['id']);
 	}
 
+	/**
+	 * Delete all expired sessions from persistant storage.
+	 *
+	 * @param  int   $expiration
+	 * @return void
+	 */
 	public function sweep($expiration)
 	{
 		foreach (glob(SESSION_PATH.'*') as $file)
 		{
-			if (filetype($file) == 'file' and filemtime($file) < $expiration) @unlink($file);
+			if ($this->file->type($file) == 'file' and $this->file->modified($file) < $expiration) $this->file->delete($file);
 		}
 	}