1: <?php
 2: /**
 3:  * Class for providing garbage collection for any VFS instance.
 4:  *
 5:  * Copyright 2003-2012 Horde LLC (http://www.horde.org/)
 6:  *
 7:  * See the enclosed file COPYING for license information (LGPL). If you
 8:  * did not receive this file, see http://www.horde.org/licenses/lgpl21.
 9:  *
10:  * @author  Michael Slusarz <slusarz@horde.org>
11:  * @package Vfs
12:  */
13: class Horde_Vfs_Gc
14: {
15:     /**
16:      * Garbage collect files in the VFS storage system.
17:      *
18:      * @param VFS $vfs       The VFS object to perform garbage collection on.
19:      * @param string $path   The VFS path to clean.
20:      * @param integer $secs  The minimum amount of time (in seconds) required
21:      *                       before a file is removed.
22:      */
23:     public function gc($vfs, $path, $secs = 345600)
24:     {
25:         /* A 1% chance we will run garbage collection during a call. */
26:         if (rand(0, 99) != 0) {
27:             return;
28:         }
29: 
30:         /* Use a backend-specific method if one exists. */
31:         if (is_callable(array($vfs, 'gc'))) {
32:             return $vfs->gc($path, $secs);
33:         }
34: 
35:         /* Make sure cleaning is done recursively. */
36:         try {
37:             $modtime = time() - $secs;
38:             foreach ($vfs->listFolder($path, null, true, false, true) as $val) {
39:                 if ($val['date'] < $modtime) {
40:                     $vfs->deleteFile($path, $val['name']);
41:                 }
42:             }
43:         } catch (Horde_Vfs_Exception $e) {
44:         }
45:     }
46: }
47: