mod/wiki/ewiki/plugins/moodle/moodle_rescue_html.php

   1 <?php // $Id$
   2
   3 /*
   4      Can be used to allow preserving of certain "safe" HTML <tags>
   5      (as seen in [sfWiki | http://sfwiki.sf.net/].
   6      "Safe" tags include Q, S, PRE, TT, H1-H6, KBD, VAR, XMP, B, I
   7      but just see (or change) ewiki_format() for more. They are not
   8      accepted if written with mixed lowercase and uppercase letters,
   9      and they cannot contain any tag attributes.
  10
  11      RESCUE_HTML was formerly part of the main rendering function, but
  12      has now been extracted into this plugin, so one only needs to
  13      include it to get simple html tags working.
  14 */
  15
  16
  17 $ewiki_plugins["format_source"][] = "ewiki_moodle_rescue_html";
  18
  19
  20 function ewiki_moodle_rescue_html(&$wiki_source) {
  21    $safe_html = EWIKI_RESCUE_HTML;
  22    $safe_html += 1;
  23
  24    $rescue_html = array(
  25       "br", "tt", "b", "i", "strong", "em", "s", "kbd", "var", "xmp", "sup", "sub",
  26       "pre", "q", "h1", "h2", "h3", "h4", "h5", "h6", "cite", "code", "u",
  27    );
  28
  29
  30
  31    #-- unescape allowed html
  32    if ($safe_html) {
  33     /*
  34       foreach ($rescue_html as $tag) {
  35          foreach(array($tag, "/$tag", ($tag=strtoupper($tag)), "/$tag") as $tag) {
  36             $wiki_source = str_replace('&lt;'.$tag.'&gt;', "<".$tag.">", $wiki_source);
  37       }  }
  38     */
  39       $regexp='#&lt;(/?('.implode("|",$rescue_html).'))( /)?&gt;#i';
  40       $wiki_source = preg_replace($regexp, '<$1>', $wiki_source);
  41    }
  42
  43 }
  44
  45
  46 ?>