| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * functions/decode/us_ascii.php |
| 5 | * |
| 6 | * This file contains us-ascii decoding function that is needed to read |
| 7 | * us-ascii encoded mails in non-us-ascii locale. |
| 8 | * |
| 9 | * Function replaces all 8bit symbols with '?' marks |
| 10 | * |
| 11 | * @copyright 2004-2021 The SquirrelMail Project Team |
| 12 | * @license http://opensource.org/licenses/gpl-license.php GNU Public License |
| 13 | * @version $Id$ |
| 14 | * @package squirrelmail |
| 15 | * @subpackage decode |
| 16 | */ |
| 17 | |
| 18 | /** |
| 19 | * us-ascii decoding function. |
| 20 | * |
| 21 | * @param string $string string that has to be cleaned |
| 22 | * @return string cleaned string |
| 23 | */ |
| 24 | function charset_decode_us_ascii ($string) { |
| 25 | // don't do decoding when there are no 8bit symbols |
| 26 | if (! sq_is8bit($string,'us-ascii')) |
| 27 | return $string; |
| 28 | |
| 29 | $string = preg_replace("/([\201-\237])/","'?'",$string); |
| 30 | |
| 31 | /* I don't want to use 0xA0 (\240) in any ranges. RH73 may dislike it */ |
| 32 | $string = str_replace("\240", '?', $string); |
| 33 | |
| 34 | $string = preg_replace("/([\241-\377])/","'?'",$string); |
| 35 | return $string; |
| 36 | } |