--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/includes/wikiengine/Parse/Default/Revise.php	Wed Jun 13 16:07:17 2007 -0400
@@ -0,0 +1,145 @@
+<?php
+
+/**
+* 
+* Parses for text marked as revised (insert/delete).
+* 
+* @category Text
+* 
+* @package Text_Wiki
+* 
+* @author Paul M. Jones <pmjones@php.net>
+* 
+* @license LGPL
+* 
+* @version $Id: Revise.php,v 1.3 2005/02/23 17:38:29 pmjones Exp $
+* 
+*/
+
+/**
+* 
+* Parses for text marked as revised (insert/delete).
+*
+* @category Text
+* 
+* @package Text_Wiki
+* 
+* @author Paul M. Jones <pmjones@php.net>
+* 
+*/
+
+class Text_Wiki_Parse_Revise 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";
+    
+    
+    /**
+    * 
+    * Config options.
+    * 
+    * @access public
+    * 
+    * @var array
+    *
+    */
+    
+    var $conf = array(
+        'delmark' => '---',
+        'insmark' => '+++'
+    );
+    
+    
+    /**
+    * 
+    * Generates a replacement for the matched text.  Token options are:
+    * 
+    * 'type' => ['start'|'end'] The starting or ending point of the
+    * inserted text.  The text itself is left in the source.
+    * 
+    * @access public
+    *
+    * @param array &$matches The array of matches from parse().
+    *
+    * @return string A pair of delimited tokens to be used as a
+    * placeholder in the source text surrounding the teletype text.
+    *
+    */
+    
+    function process(&$matches)
+    {
+        $output = '';
+        $src = $matches[1];
+        $delmark = $this->getConf('delmark'); // ---
+        $insmark = $this->getConf('insmark'); // +++
+        
+        // '---' must be before '+++' (if they both appear)
+        $del = strpos($src, $delmark);
+        $ins = strpos($src, $insmark);
+        
+        // if neither is found, return right away
+        if ($del === false && $ins === false) {
+            return $matches[0];
+        }
+        
+        // handle text to be deleted
+        if ($del !== false) {
+            
+            // move forward to the end of the deletion mark
+            $del += strlen($delmark);
+            
+            if ($ins === false) {
+                // there is no insertion text following
+                $text = substr($src, $del);
+            } else {
+                // there is insertion text following,
+                // mitigate the length
+                $text = substr($src, $del, $ins - $del);
+            }
+            
+            $output .= $this->wiki->addToken(
+                $this->rule, array('type' => 'del_start')
+            );
+            
+            $output .= $text;
+            
+            $output .= $this->wiki->addToken(
+                $this->rule, array('type' => 'del_end')
+            );
+        }
+        
+        // handle text to be inserted
+        if ($ins !== false) {
+            
+            // move forward to the end of the insert mark
+            $ins += strlen($insmark);
+            $text = substr($src, $ins);
+            
+            $output .= $this->wiki->addToken(
+                $this->rule, array('type' => 'ins_start')
+            );
+            
+            $output .= $text;
+            
+            $output .= $this->wiki->addToken(
+                $this->rule, array('type' => 'ins_end')
+            );
+        }
+        
+        return $output;
+    }
+}
+?>
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