1: <?php
 2: /**
 3:  * Stream filter class to convert binary data into hexadecimal.
 4:  *
 5:  * Usage:
 6:  *   stream_filter_register('horde_bin2hex', 'Horde_Stream_Filter_Bin2hex');
 7:  *   stream_filter_[app|pre]pend($stream, 'horde_bin2hex',
 8:  *                               [ STREAM_FILTER_[READ|WRITE|ALL] ]);
 9:  *
10:  * Copyright 2011-2012 Horde LLC (http://www.horde.org/)
11:  *
12:  * See the enclosed file COPYING for license information (LGPL). If you
13:  * did not receive this file, see http://www.horde.org/licenses/lgpl21.
14:  *
15:  * @author   Michael Slusarz <slusarz@horde.org>
16:  * @category Horde
17:  * @license  http://www.horde.org/licenses/lgpl21 LGPL 2.1
18:  * @package  Stream_Filter
19:  */
20: class Horde_Stream_Filter_Bin2hex extends php_user_filter
21: {
22:     /**
23:      * @see stream_filter_register()
24:      */
25:     public function filter($in, $out, &$consumed, $closing)
26:     {
27:         while ($bucket = stream_bucket_make_writeable($in)) {
28:             $bucket->data = bin2hex($bucket->data);
29:             $consumed += $bucket->datalen;
30:             stream_bucket_append($out, $bucket);
31:         }
32: 
33:         return PSFS_PASS_ON;
34:     }
35: 
36: }
37: