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1 | <?php |
2 | |
3 | /** |
4 | * Truncate view helper |
5 | * |
6 | * PHP version 8 |
7 | * |
8 | * Copyright (C) Villanova University 2010. |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License version 2, |
12 | * as published by the Free Software Foundation. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | * GNU General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
22 | * |
23 | * @category VuFind |
24 | * @package View_Helpers |
25 | * @author Demian Katz <demian.katz@villanova.edu> |
26 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
27 | * @link https://vufind.org/wiki/development Wiki |
28 | */ |
29 | |
30 | namespace VuFind\View\Helper\Root; |
31 | |
32 | use Laminas\View\Helper\AbstractHelper; |
33 | |
34 | use function function_exists; |
35 | use function strlen; |
36 | |
37 | /** |
38 | * Truncate view helper |
39 | * |
40 | * @category VuFind |
41 | * @package View_Helpers |
42 | * @author Demian Katz <demian.katz@villanova.edu> |
43 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
44 | * @link https://vufind.org/wiki/development Wiki |
45 | */ |
46 | class Truncate extends AbstractHelper |
47 | { |
48 | /** |
49 | * Truncate a string |
50 | * |
51 | * @param string $str the string to be truncated |
52 | * @param string $len how long the truncated string will be |
53 | * @param string $append what to add to the end of the string to |
54 | * indicate it's been truncated |
55 | * |
56 | * @return string |
57 | */ |
58 | public function __invoke($str, $len, $append = '...') |
59 | { |
60 | if ($len == 0) { |
61 | return ''; |
62 | } elseif (strlen($str) > $len) { |
63 | if (function_exists('mb_substr')) { |
64 | return trim(mb_substr($str, 0, $len, 'UTF-8')) . $append; |
65 | } else { |
66 | return trim(substr($str, 0, $len)) . $append; |
67 | } |
68 | } |
69 | return $str; |
70 | } |
71 | } |