<?php

/**
* 
* Parses for text marked as a code example block.
* 
* @category Text
* 
* @package Text_Wiki
* 
* @author Paul M. Jones <pmjones@php.net>
* 
* @license LGPL
* 
* @version $Id: Code.php 237313 2007-06-09 23:11:25Z justinpatrin $
* 
*/

/**
* 
* Parses for text marked as a code example block.
* 
* This class implements a Text_Wiki_Parse to find sections marked as code
* examples.  Blocks are marked as the string <code> on a line by itself,
* followed by the inline code example, and terminated with the string
* </code> on a line by itself.  The code example is run through the
* native PHP highlight_string() function to colorize it, then surrounded
* with <pre>...</pre> tags when rendered as XHTML.
*
* @category Text
* 
* @package Text_Wiki
* 
* @author Paul M. Jones <pmjones@php.net>
* 
*/

class Text_Wiki_Parse_Code extends Text_Wiki_Parse {


	/**
	*
	* The regular expression used to find source text matching this
	* rule.
	*
	* @access public
	*
	* @var string
	*
	*/

/*    var $regex = '/^(\<code( .+)?\>)\n(.+)\n(\<\/code\>)(\s|$)/Umsi';*/
	var $regex = ';^<code(\s[^>]*)?>((?:(?R)|.*?)*)\n</code>(\s|$);msi';

	/**
	*
	* Generates a token entry for the matched text.  Token options are:
	*
	* 'text' => The full matched text, not including the <code></code> tags.
	*
	* @access public
	*
	* @param array &$matches The array of matches from parse().
	*
	* @return A delimited token number to be used as a placeholder in
	* the source text.
	*
	*/

	function process(&$matches)
	{
		// are there additional attribute arguments?
		$args = trim($matches[1]);

		if ($args == '') {
			$options = array(
				'text' => $matches[2],
				'attr' => array('type' => '')
			);
		} else {
			// get the attributes...
			$attr = $this->getAttrs($args);

			// ... and make sure we have a 'type'
			if (! isset($attr['type'])) {
				$attr['type'] = '';
			}

			// retain the options
			$options = array(
				'text' => $matches[2],
				'attr' => $attr
			);
		}

		return $this->wiki->addToken($this->rule, $options) . $matches[3];
	}
}
