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+<?php
+
+/**
+ *
+ * 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 two
+ * stars. On parsing, the text itself is left in place, but the
+ * starting and ending instances of two stars are replaced with
+ * tokens.
+ *
+ * @category Text
+ *
+ * @package Text_Wiki
+ *
+ * @author Paul M. Jones <pmjones@php.net>
+ * @author Michele Tomaiuolo <tomamic@yahoo.it>
+ *
+ * @license LGPL
+ *
+ * @version $Id: Strong.php 242126 2007-09-03 21:17:00Z mic $
+ *
+ */
+
+class Text_Wiki_Parse_Strong 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 = "/\*\*(.+?)\*\*/";
+ //var $regex = "/(?:\*\*(.+?)\*\*|(?:(?<=[\W_\xFF])\*(?![ \*]))(.+?)(?:(?<![ \*])\*(?=[\W_\xFF])))/";
+
+
+ /**
+ *
+ * Generates a replacement for the matched text. Token options are:
+ *
+ * 'type' => ['start'|'end'] The starting or ending point of the
+ * emphasized text. The text itself is left in the source.
+ *
+ * @access public
+ *
+ * @param array &$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)
+ {
+ $text = $matches[1];
+ //$text = $matches[1] ? $matches[1] : $matches[2];
+
+ if (! $this->wiki->checkInnerTags($text)) {
+ return $matches[0];
+ }
+
+ $start = $this->wiki->addToken(
+ $this->rule,
+ array('type' => 'start')
+ );
+
+ $end = $this->wiki->addToken(
+ $this->rule,
+ array('type' => 'end')
+ );
+
+ return $start . $text . $end;
+ }
+}
+?> \ No newline at end of file