lib/api/smarty/plugins/prefilter.hascontent.php

   1 <?php
   2 /**
   3  * Template prefiler plugin which allows inserting code dynamically upon the contents
   4  * of 'content'.
   5  *
   6  * Usage:
   7  *      {hascontent}
   8  *      <ul>
   9  *              {content}
  10  *                      {if $foo}<li>bar</li>{/if}
  11  *              {/content}
  12  *      </ul>
  13  *      {hascontentelse}
  14  *              <p>baz</p>
  15  *      {/hascontent}
  16  *
  17  * @author      Alexander Ebert
  18  * @copyright   2001-2014 WoltLab GmbH
  19  * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
  20  * @package     com.woltlab.wcf
  21  * @subpackage  system.template.plugin
  22  * @category    Community Framework
  23  */
  24
  25 function smarty_prefilter_hascontent($source, &$smarty) {
  26         $ldq = preg_quote($smarty->left_delimiter, '~');
  27         $rdq = preg_quote($smarty->right_delimiter, '~');
  28
  29         $source = preg_replace_callback("~{$ldq}hascontent( assign='(?P<assign>.*)')?{$rdq}(?P<before>.*){$ldq}content{$rdq}(?P<content>.*){$ldq}\/content{$rdq}(?P<after>.*)({$ldq}hascontentelse{$rdq}(?P<else>.*))?{$ldq}\/hascontent{$rdq}~sU", function ($matches) {
  30                 $beforeContent = $matches['before'];
  31                 $content = $matches['content'];
  32                 $afterContent = $matches['after'];
  33                 $elseContent = (isset($matches['else'])) ? $matches['else'] : '';
  34                 $assignContent = (isset($matches['assign']) && !empty($matches['assign'])) ? $matches['assign'] : '';
  35                 $variable = 'hascontent_' . sha1(time());
  36
  37                 $newContent = '{capture assign='.$variable.'}'.$content.'{/capture}'."\n";
  38                 $newContent .= '{assign var='.$variable.' value=$'.$variable.'|trim}'."\n";
  39
  40                 if ($assignContent) $newContent .= '{capture assign='.$assignContent.'}'."\n";
  41                 $newContent .= '{if $'.$variable.'}'.$beforeContent.'{$'.$variable.'}'."\n".$afterContent;
  42
  43                 if (!empty($elseContent)) {
  44                         $newContent .= '{else}'.$elseContent."\n";
  45                 }
  46
  47                 $newContent .= '{/if}'."\n";
  48
  49                 if ($assignContent) $newContent .= "{/capture}\n{\$".$assignContent."}\n";
  50
  51                 return $newContent;
  52         }, $source);
  53
  54         return $source;
  55 }