<?php
/**
 * HTML Comment Plugin: allows HTML comments to be retained in the output
 *
 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
 * @author     Christopher Arndt <chris@chrisarndt.de>
 *             Danny Lin         <danny0838@gmail.com>
 */

if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/');
if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
require_once(DOKU_PLUGIN.'syntax.php');

/**
 * All DokuWiki plugins to extend the parser/rendering mechanism
 * need to inherit from this class
 */
class syntax_plugin_htmlcomment extends DokuWiki_Syntax_Plugin {

    function getType() { return 'substition'; }

    function getSort() { return 325; }

    function connectTo($mode) {
        $this->Lexer->addSpecialPattern("<\!--.*?-->", $mode, 'plugin_htmlcomment');
    }

    function handle($match, $state, $pos, Doku_Handler $handler) {
        if ($state == DOKU_LEXER_SPECIAL) {
             // strip <!-- from start and --> from end
            $match = substr($match,4,-3);
            return array($state, $match);
        }
        return array();
    }

    function render($mode, Doku_Renderer $renderer, $data) {
        if ($mode == 'xhtml') {
            list($state, $match) = $data;
            if ($state == DOKU_LEXER_SPECIAL) {
                $renderer->doc .= '<!--'.$match.'-->';
            }
            return true;
        }
        return false;
    }
}

?>