<?php
// $Id: Code.php,v 1.1 2005/01/31 15:46:52 pmjones Exp $


/**
* 
* 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.
*
* @author Paul M. Jones <pmjones@ciaweb.net>
*
* @package Text_Wiki
*
*/

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';
    
    
    /**
    * 
    * 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[2]);
        
        if ($args == '') {
            $options = array(
                'text' => $matches[3],
                '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[3],
                'attr' => $attr
            );
        }
        
        return $this->wiki->addToken($this->rule, $options) . $matches[5];
    }
}
?>