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     if ($length == 0) {

    30         return '';

    31     }

    32 

    33     if (Smarty::$_MBSTRING) {

    34         if (mb_strlen($string, Smarty::$_CHARSET) > $length) {

    35             $length -= min($length, mb_strlen($etc, Smarty::$_CHARSET));

    36             if (!$break_words && !$middle) {

    37                 $string = preg_replace('/\s+?(\S+)?$/' . Smarty::$_UTF8_MODIFIER, '', mb_substr($string, 0, $length + 1, Smarty::$_CHARSET));

    38             }

    39             if (!$middle) {

    40                 return mb_substr($string, 0, $length, Smarty::$_CHARSET) . $etc;

    41             }

    42 

    43             return mb_substr($string, 0, $length / 2, Smarty::$_CHARSET) . $etc . mb_substr($string, -$length / 2, $length, Smarty::$_CHARSET);

    44         }

    45 

    46         return $string;

    47     }

    48 

    49     // no MBString fallback

    50     if (isset($string[$length])) {

    51         $length -= min($length, strlen($etc));

    52         if (!$break_words && !$middle) {

    53             $string = preg_replace('/\s+?(\S+)?$/', '', substr($string, 0, $length + 1));

    54         }

    55         if (!$middle) {

    56             return substr($string, 0, $length) . $etc;

    57         }

    58 

    59         return substr($string, 0, $length / 2) . $etc . substr($string, -$length / 2);

    60     }

    61 

    62     return $string;

    63 }