1: <?php
 2: /**
 3:  * Smarty plugin
 4:  *
 5:  * @package    Smarty
 6:  * @subpackage PluginsModifier
 7:  */
 8: 
 9: /**
10:  * Smarty truncate modifier plugin
11:  * Type:     modifier<br>
12:  * Name:     truncate<br>
13:  * Purpose:  Truncate a string to a certain length if necessary,
14:  *               optionally splitting in the middle of a word, and
15:  *               appending the $etc string or inserting $etc into the middle.
16:  *
17:  * @link   http://smarty.php.net/manual/en/language.modifier.truncate.php truncate (Smarty online manual)
18:  * @author Monte Ohrt <monte at ohrt dot com>
19:  *
20:  * @param string  $string      input string
21:  * @param integer $length      length of truncated text
22:  * @param string  $etc         end string
23:  * @param boolean $break_words truncate at word boundary
24:  * @param boolean $middle      truncate in the middle of text
25:  *
26:  * @return string truncated string
27:  */
28: function smarty_modifier_truncate($string, $length = 80, $etc = '...', $break_words = false, $middle = false)
29: {
30:     if ($length == 0) {
31:         return '';
32:     }
33: 
34:     if (Smarty::$_MBSTRING) {
35:         if (mb_strlen($string, Smarty::$_CHARSET) > $length) {
36:             $length -= min($length, mb_strlen($etc, Smarty::$_CHARSET));
37:             if (!$break_words && !$middle) {
38:                 $string = preg_replace('/\s+?(\S+)?$/' . Smarty::$_UTF8_MODIFIER, '', mb_substr($string, 0, $length + 1, Smarty::$_CHARSET));
39:             }
40:             if (!$middle) {
41:                 return mb_substr($string, 0, $length, Smarty::$_CHARSET) . $etc;
42:             }
43: 
44:             return mb_substr($string, 0, $length / 2, Smarty::$_CHARSET) . $etc . mb_substr($string, - $length / 2, $length, Smarty::$_CHARSET);
45:         }
46: 
47:         return $string;
48:     }
49: 
50:     // no MBString fallback
51:     if (isset($string[$length])) {
52:         $length -= min($length, strlen($etc));
53:         if (!$break_words && !$middle) {
54:             $string = preg_replace('/\s+?(\S+)?$/', '', substr($string, 0, $length + 1));
55:         }
56:         if (!$middle) {
57:             return substr($string, 0, $length) . $etc;
58:         }
59: 
60:         return substr($string, 0, $length / 2) . $etc . substr($string, - $length / 2);
61:     }
62: 
63:     return $string;
64: }
65: