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   1  <?php
   2  /**
   3   * Smarty plugin
   4   * @package Smarty
   5   * @subpackage plugins
   6   */
   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 $etc into the middle.
  17   * @link http://smarty.php.net/manual/en/language.modifier.truncate.php
  18   *          truncate (Smarty online manual)
  19   * @author   Monte Ohrt <monte at ohrt dot com>
  20   * @param string
  21   * @param integer
  22   * @param string
  23   * @param boolean
  24   * @param boolean
  25   * @return string
  26   */
  27  function smarty_modifier_truncate($string, $length = 80, $etc = '...',
  28                                    $break_words = false, $middle = false)
  29  {
  30      if ($length == 0)
  31          return '';
  32  
  33      if (strlen($string) > $length) {
  34          $length -= min($length, strlen($etc));
  35          if (!$break_words && !$middle) {
  36              $string = preg_replace('/\s+?(\S+)?$/', '', substr($string, 0, $length+1));
  37          }
  38          if(!$middle) {
  39              return substr($string, 0, $length) . $etc;
  40          } else {
  41              return substr($string, 0, $length/2) . $etc . substr($string, -$length/2);
  42          }
  43      } else {
  44          return $string;
  45      }
  46  }
  47  
  48  /* vim: set expandtab: */
  49  
  50  ?>