filter/tidy/filter.php

   1 <?php
   2
   3 // This function looks for text including markup and
   4 // applies tidy's repair function to it.
   5 // Tidy is a HTML clean and
   6 // repair utility, which is currently available for PHP 4.3.x and PHP 5 as a
   7 // PECL extension from http://pecl.php.net/package/tidy, in PHP 5 you need only
   8 // to compile using the --with-tidy option.
   9 // If you don't have the tidy extension installed or don't know, you can enable
  10 // or disable this filter, it just won't have any effect.
  11 // If you want to know what you can set in $tidyoptions and what their default
  12 // values are, see http://php.net/manual/en/function.tidy-get-config.php.
  13
  14 /**
  15 * @author Hannes Gassert <hannes at mediagonal dot ch>
  16 * @param        int            course id
  17 * @param        string         text to be filtered
  18 */
  19 function tidy_filter($courseid, $text) {
  20
  21 /// Configuration for tidy. Feel free to tune for your needs, e.g. to allow
  22 /// proprietary markup.
  23     $tidyoptions = array(
  24              'output-xhtml' => true,
  25              'show-body-only' => true,
  26              'tidy-mark' => false,
  27              'drop-proprietary-attributes' => true,
  28              'drop-font-tags' => true,
  29              'drop-empty-paras' => true,
  30              'indent' => true,
  31              'quiet' => true,
  32     );
  33
  34 /// Do a quick check using strpos to avoid unnecessary work
  35     if (strpos($text, '<') === false) {
  36         return $text;
  37     }
  38
  39
  40 /// If enabled: run tidy over the entire string
  41     if (function_exists('tidy_repair_string')){
  42         $text = tidy_repair_string($text, $tidyoptions, 'utf8');
  43     }
  44
  45     return $text;
  46 }
  47 ?>