# HG changeset patch
# User Dan
# Date 1230130405 18000
# Node ID 1783be24148802e3c310fbc648c1735b39dfe616

First commit; half-done and a bit tempermental.

diff -r 000000000000 -r 1783be241488 Wikulator.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Wikulator.php	Wed Dec 24 09:53:25 2008 -0500
@@ -0,0 +1,181 @@
+<?php
+/*
+Plugin Name: Mediafier
+Plugin URI: http://enanocms.org/Mediafier
+Description: Several parser extensions that provide MediaWiki-like support for references, search highlighting, and a table of contents to Enano
+Author: Dan Fuhry
+Version: 0.1 beta 1
+Author URI: http://enanocms.org/
+*/
+
+/*
+ * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
+ */
+
+$plugins->attachHook('render_wikiformat_post', 'mediafy($result);');
+$plugins->attachHook('compile_template', 'mediafier_add_headers();');
+$plugins->attachHook('html_attribute_whitelist', '$whitelist["ref"] = array(); $whitelist["references"] = array("/");');
+
+function mediafy(&$text)
+{
+  global $db, $session, $paths, $template, $plugins; // Common objects
+  mediafy_highlight_search_words($text);
+  mediafy_process_references($text);
+}
+
+function mediafier_add_headers()
+{
+  global $db, $session, $paths, $template, $plugins; // Common objects
+  $template->add_header("<style type=\"text/css\">
+                        .highlight  { background-color: #FFFFC0; font-weight: bold; }
+                        .refbak     { background-color: #E0E0FF; font-weight: bold; }
+                        .references { font-size: smaller; }
+                      </style>");
+  $ref_script = <<<EOF
+      <enano:no-opt>
+      <script type="text/javascript">
+      // <![CDATA[
+        function refsOff()
+        {
+          var divs = getElementsByClassName(document, '*', 'refbottom');
+          for ( var i in divs )
+          {
+            $(divs[i]).rmClass('refbak');
+          }
+          divs = getElementsByClassName(document, '*', 'reftop');
+          for ( var i in divs )
+          {
+            $(divs[i]).rmClass('refbak');
+          }
+        }
+        function refToBottom(id)
+        {
+          refsOff();
+          $('ref_'+id+'_b').addClass('refbak');
+        }
+        function refToTop(id)
+        {
+          refsOff();
+          $('cite_'+id).addClass('refbak');
+        }
+        // ]]>
+      </script>
+      </enano:no-opt>
+
+EOF;
+  $template->add_header($ref_script);
+}
+
+function mediafy_highlight_search_words(&$result)
+{
+  global $db, $session, $paths, $template, $plugins; // Common objects
+  
+  if ( !isset($_SERVER['HTTP_REFERER']) && !isset($_GET['highlight']) )
+    return false;
+  
+  $referer = ( isset($_GET['highlight']) ) ? $_SERVER['REQUEST_URI'] : $_SERVER['HTTP_REFERER'];
+  $term = ( isset($_GET['highlight']) ) ? 'highlight' : 'q';
+  
+  preg_match('/(\?|&)'.$term.'=(.+?)(&|$)/', $referer, $match);
+  if ( !isset($match[2]) )
+  {
+    return false;
+  }
+  
+  $words = $match[2];
+  $words = urldecode($words);
+  if ( $term == 'q' )
+  {
+    // it's from a search query - extract terms
+    require_once(ENANO_ROOT . '/includes/search.php');
+    $words = parse_search_query($words, $warnings);
+    $words = array_merge($words['any'], $words['req']);
+  }
+  else
+  {
+    $words = explode(' ', $words);
+  }
+  
+  // strip HTML out of the rendered text
+  $rand_seed = $session->dss_rand();
+  preg_match_all('/<.+?>/', $result, $html_matches);
+  $i = 0;
+  foreach ( $html_matches[0] as $match )
+  {
+    $i++;
+    $result = str_replace($match, "{HIGHLIGHT_PLACEHOLDER:$i:$rand_seed}", $result);
+  }
+  
+  // highlight matches
+  foreach ( $words as $word )
+  {
+    $result = preg_replace('/([\W]|^)(' . preg_quote($word) . ')([\W])/i', "\\1<span class=\"highlight\">\\2</span>\\3", $result);
+  }
+  
+  // restore HTML
+  $i = 0;
+  foreach ( $html_matches[0] as $match )
+  {
+    $i++;
+    $result = str_replace("{HIGHLIGHT_PLACEHOLDER:$i:$rand_seed}", $match, $result);
+  }
+  
+  // add "remove highlighting" link
+  $result = '<div style="float: right; text-align: right;"><a href="' . makeUrl($paths->page) . '" onclick="ajaxReset(); return false;">Turn off <span class="highlight">highlighting</span></a></div>' .
+            $result;
+  
+}
+
+function mediafy_process_references(&$text)
+{
+  global $db, $session, $paths, $template, $plugins; // Common objects
+  
+  // Is there a <references /> in the wikitext? If not, just return out to avoid empty processing
+  if ( !preg_match('#<references(([ ]*)/)?>#', $text) )
+  {
+    //die('no match');
+    return false;
+  }
+  
+  // Retrieve references
+  preg_match_all('#<ref>(.+?)</ref>#s', $text, $matches);
+  
+  // Init counter
+  $i = 0;
+  
+  // Init refs array
+  $refs = array();
+  
+  // main parser loop
+  foreach ( $matches[0] as $j => $match )
+  {
+    $i++;
+    $inner =& $matches[1][$j];
+    $refs[$i] = $inner;
+    $reflink = '<sup><a class="reftop" id="cite_' . $i . '" name="cite_' . $i . '" href="#ref_' . $i . '" onclick="refToBottom(\'' . $i . '\');">[' . $i . ']</a></sup>';
+    $text = str_replace($match, $reflink, $text);
+  }
+  
+  // compile refs div
+  $refsdiv = '<div class="references">';
+  $refsdiv .= '<table border="0" width="100%"><tr><td valign="top">';
+  $count = ( count($refs) >= 20 ) ? floor(count($refs) / 2) : 99;
+  foreach ( $refs as $i => $ref )
+  {
+    $reflink = '<span id="ref_' . $i . '" name="ref_' . $i . '"><sup><b><a onclick="refToTop(\'' . $i . '\');" href="#cite_' . $i . '">^</a></b></sup> </span>';
+    $refsdiv .= "<div class=\"refbottom\" id=\"ref_{$i}_b\">$reflink $i. $ref</div>";
+    if ( $i == $count )
+      $refsdiv .= '</td><td valign="top">';
+  }
+  $refsdiv .= '</td></tr></table>';
+  $refsdiv .= '</div>';
+  
+  preg_match('#<references(([ ]*)/)?>#', $text, $match);
+  $text = str_replace_once($match[0], $refsdiv, $text);
+}
+
+?>