<?php
// sortparagraph.inc.php for PukiWiki available under the GPL
//       by teanan / Interfair Laboratory 2005.

function plugin_sortparagraph_action()
{
	global $vars, $_title_edit;

	$page = (isset($vars['page']))? $vars['page'] : '';
	$pagedata = get_source($page);
	$digest = md5(join('',$pagedata));

	// sort
	$postdata = plugin_sortparagraph_sort($pagedata);
	unset($pagedata);

	$vars['refer'] = $page;
	return array(
		'msg'=>$_title_edit,
		'body'=>edit_form($page, $postdata, $digest, FALSE)
	);
}

function plugin_sortparagraph_sort(&$pagedata, $level = 0)
{
	$retval = array();
	$data = '';
	while(count($pagedata)>0) {
		$line = array_shift($pagedata);
		$match = array();
		if(preg_match('/^(\*{1,3})/',$line, $match)) {
			$num = strlen($match[1]);
			if($num==$level) {
				$retval[] = $data;
				$data = $line;
			}
			else if($num>$level) {
				array_unshift($pagedata, $line);
				$data .= plugin_sortparagraph_sort($pagedata, $num);
			}
			else {
				array_unshift($pagedata, $line);
				break;
			}
		}
		else {
			$data .= $line;
		}
	}
	$retval[] = $data;
	sort($retval,SORT_STRING);

	return join('', $retval);
}
?>