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