--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/includes/wikiengine/Parse/Default/Underline.php	Wed Jun 13 16:07:17 2007 -0400
@@ -0,0 +1,79 @@
+<?php
+
+/**
+* 
+* Parses for bold text.
+* 
+* @category Text
+* 
+* @package Text_Wiki
+* 
+* @author Paul M. Jones <pmjones@php.net>
+* 
+* @license LGPL
+* 
+* @version $Id: Underline.php,v 1.1 2005/07/10 20:40:20 justinpatrin Exp $
+* 
+*/
+
+/**
+* 
+* Parses for bold text.
+* 
+* This class implements a Text_Wiki_Rule to find source text marked for
+* strong emphasis (bold) as defined by text surrounded by three
+* single-quotes. On parsing, the text itself is left in place, but the
+* starting and ending instances of three single-quotes are replaced with
+* tokens.
+*
+* @category Text
+* 
+* @package Text_Wiki
+* 
+* @author Paul M. Jones <pmjones@php.net>
+* 
+*/
+
+class Text_Wiki_Parse_Underline extends Text_Wiki_Parse {
+    
+    
+    /**
+    * 
+    * The regular expression used to parse the source text and find
+    * matches conforming to this rule.  Used by the parse() method.
+    * 
+    * @access public
+    * 
+    * @var string
+    * 
+    * @see parse()
+    * 
+    */
+    
+    var $regex =  "/__(()|[^_].*)__/U";
+    
+    
+    /**
+    * 
+    * Generates a replacement for the matched text.  Token options are:
+    * 
+    * 'type' => ['start'|'end'] The starting or ending point of the
+    * emphasized text.  The text itself is left in the source.
+    * 
+    * @access public
+    *
+    * @param array &$matches The array of matches from parse().
+    *
+    * @return A pair of delimited tokens to be used as a placeholder in
+    * the source text surrounding the text to be emphasized.
+    *
+    */
+    
+    function process(&$matches)
+    {
+        $start = $this->wiki->addToken($this->rule, array('type' => 'start'));
+        $end = $this->wiki->addToken($this->rule, array('type' => 'end'));
+        return $start . $matches[1] . $end;
+    }
+}
+?>
\ No newline at end of file