--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/includes/wikiengine/Parse/Mediawiki/Emphasis.php	Wed Jun 13 16:07:17 2007 -0400
@@ -0,0 +1,86 @@
+<?php
+// vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4:
+/**
+ * Mediawiki: Parses for emphazised text.
+ *
+ * Text_Wiki rule parser to find source text emphazised
+ * as defined by text surrounded by repeated single quotes  ''...'' and more
+ * Translated are ''emphasis'' , '''strong''' or '''''both''''' ...
+ *
+ * PHP versions 4 and 5
+ *
+ * @category   Text
+ * @package    Text_Wiki
+ * @author     Bertrand Gugger <bertrand@toggg.com>
+ * @author     Paul M. Jones <pmjones@php.net>
+ * @copyright  2005 bertrand Gugger
+ * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
+ * @version    CVS: $Id: Emphasis.php,v 1.4 2006/02/15 12:27:40 toggg Exp $
+ * @link       http://pear.php.net/package/Text_Wiki
+ */
+
+/**
+ * Emphazised text rule parser class for Mediawiki. Makes Emphasis, Strong or both
+ * This class implements a Text_Wiki_Parse to find source text marked for
+ * emphasis, stronger and very as defined by text surrounded by 2,3 or 5 single-quotes.
+ * On parsing, the text itself is left in place, but the starting and ending
+ * instances of the single-quotes are replaced with tokens.
+ *
+ * @category   Text
+ * @package    Text_Wiki
+ * @author     Bertrand Gugger <bertrand@toggg.com>
+ * @copyright  2005 bertrand Gugger
+ * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
+ * @version    Release: @package_version@
+ * @link       http://pear.php.net/package/Text_Wiki
+ * @see        Text_Wiki_Parse::Text_Wiki_Parse()
+ */
+class Text_Wiki_Parse_Emphasis 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.
+     * We match '' , ''' or ''''' embeded texts
+     *
+     * @access public
+     * @var string
+     * @see Text_Wiki_Parse::parse()
+     */
+    var $regex = "/(?<!')'('{1,4})(.*?)\\1'(?!')/";
+
+    /**
+     * Generates a replacement for the matched text.  Token options are:
+     * - 'type' => ['start'|'end'] The starting or ending point of the emphasized text.
+     * Generated tokens are Emphasis (this rule), Strong or Emphasis / Strong
+     * The text itself is left in the source but may content bested blocks
+     *
+     * @access public
+     * @param array &$matches The array of matches from parse().
+     * @return string Delimited by start/end tokens to be used as
+     * placeholder in the source text surrounding the text to be emphasized.
+     */
+    function process(&$matches)
+    {
+        $embeded = $matches[2];
+        switch (strlen($matches[1])) {
+            case 1:
+                $start = $this->wiki->addToken($this->rule, array('type' => 'start'));
+                $end   = $this->wiki->addToken($this->rule, array('type' => 'end'));
+            break;
+            case 3:
+                $embeded = "'" . $embeded . "'";
+            case 2:
+                $start = $this->wiki->addToken('Strong',    array('type' => 'start'));
+                $end   = $this->wiki->addToken('Strong',    array('type' => 'end'));
+            break;
+            case 4:
+                $start = $this->wiki->addToken($this->rule, array('type' => 'start'))
+                       . $this->wiki->addToken('Strong',    array('type' => 'start'));
+                $end   = $this->wiki->addToken('Strong',    array('type' => 'end'))
+                       . $this->wiki->addToken($this->rule, array('type' => 'end'));
+            break;
+        }
+        return $start . $embeded . $end;
+    }
+}
+?>