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   1  <?php
   2  /**
   3   * Smarty plugin
   4   * @package Smarty
   5   * @subpackage plugins
   6   */
   7  
   8  /**
   9   * Smarty {cycle} function plugin
  10   *
  11   * Type:     function<br>
  12   * Name:     cycle<br>
  13   * Date:     May 3, 2002<br>
  14   * Purpose:  cycle through given values<br>
  15   * Input:
  16   *         - name = name of cycle (optional)
  17   *         - values = comma separated list of values to cycle,
  18   *                    or an array of values to cycle
  19   *                    (this can be left out for subsequent calls)
  20   *         - reset = boolean - resets given var to true
  21   *         - print = boolean - print var or not. default is true
  22   *         - advance = boolean - whether or not to advance the cycle
  23   *         - delimiter = the value delimiter, default is ","
  24   *         - assign = boolean, assigns to template var instead of
  25   *                    printed.
  26   *
  27   * Examples:<br>
  28   * <pre>
  29   * {cycle values="#eeeeee,#d0d0d0d"}
  30   * {cycle name=row values="one,two,three" reset=true}
  31   * {cycle name=row}
  32   * </pre>
  33   * @link http://smarty.php.net/manual/en/language.function.cycle.php {cycle}
  34   *       (Smarty online manual)
  35   * @author Monte Ohrt <monte at ohrt dot com>
  36   * @author credit to Mark Priatel <mpriatel@rogers.com>
  37   * @author credit to Gerard <gerard@interfold.com>
  38   * @author credit to Jason Sweat <jsweat_php@yahoo.com>
  39   * @version  1.3
  40   * @param array
  41   * @param Smarty
  42   * @return string|null
  43   */
  44  function smarty_function_cycle($params, &$smarty)
  45  {
  46      static $cycle_vars;
  47      
  48      $name = (empty($params['name'])) ? 'default' : $params['name'];
  49      $print = (isset($params['print'])) ? (bool)$params['print'] : true;
  50      $advance = (isset($params['advance'])) ? (bool)$params['advance'] : true;
  51      $reset = (isset($params['reset'])) ? (bool)$params['reset'] : false;
  52              
  53      if (!in_array('values', array_keys($params))) {
  54          if(!isset($cycle_vars[$name]['values'])) {
  55              $smarty->trigger_error("cycle: missing 'values' parameter");
  56              return;
  57          }
  58      } else {
  59          if(isset($cycle_vars[$name]['values'])
  60              && $cycle_vars[$name]['values'] != $params['values'] ) {
  61              $cycle_vars[$name]['index'] = 0;
  62          }
  63          $cycle_vars[$name]['values'] = $params['values'];
  64      }
  65  
  66      $cycle_vars[$name]['delimiter'] = (isset($params['delimiter'])) ? $params['delimiter'] : ',';
  67      
  68      if(is_array($cycle_vars[$name]['values'])) {
  69          $cycle_array = $cycle_vars[$name]['values'];
  70      } else {
  71          $cycle_array = explode($cycle_vars[$name]['delimiter'],$cycle_vars[$name]['values']);
  72      }
  73      
  74      if(!isset($cycle_vars[$name]['index']) || $reset ) {
  75          $cycle_vars[$name]['index'] = 0;
  76      }
  77      
  78      if (isset($params['assign'])) {
  79          $print = false;
  80          $smarty->assign($params['assign'], $cycle_array[$cycle_vars[$name]['index']]);
  81      }
  82          
  83      if($print) {
  84          $retval = $cycle_array[$cycle_vars[$name]['index']];
  85      } else {
  86          $retval = null;
  87      }
  88  
  89      if($advance) {
  90          if ( $cycle_vars[$name]['index'] >= count($cycle_array) -1 ) {
  91              $cycle_vars[$name]['index'] = 0;
  92          } else {
  93              $cycle_vars[$name]['index']++;
  94          }
  95      }
  96      
  97      return $retval;
  98  }
  99  
 100  /* vim: set expandtab: */
 101  
 102  ?>