<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE extension SYSTEM "ext-1.0.dtd">

<!--
/**
 * Add more seo options
 *
 * @copyright Copyright (C) 2011-2012 Helid
 * @license http://www.gnu.org/licenses/gpl.html GPL version 2 or higher
 * @package pun_seo
 */
-->

<extension engine="1.0">
	<id>pun_seo</id>
	<title>Punbb SEO</title>
	<version>1.0.1</version>
	<description>Add more seo options.</description>
	<author>Helid</author>

	<minversion>1.4</minversion>
	<maxtestedon>1.4.2</maxtestedon>

	<hooks>
		<hook id="fn_generate_crumbs_start"><![CDATA[
			global $lang_common, $forum_url, $forum_config, $forum_page;

			if (empty($forum_page['crumbs']))
				$forum_page['crumbs'][0] = $forum_config['o_board_title'];

			$crumbs = '';
			$num_crumbs = count($forum_page['crumbs']);

			if ($reverse)
			{
				for ($i = ($num_crumbs - 1); $i >= 0; --$i)
					$crumbs .= (is_array($forum_page['crumbs'][$i]) ? forum_htmlencode($forum_page['crumbs'][$i][0]) : forum_htmlencode($forum_page['crumbs'][$i])).((isset($forum_page['page']) && $i == ($num_crumbs - 1)) ? ' ('.$lang_common['Page'].' '.forum_number_format($forum_page['page']).')' : '').($i > 0 ? $lang_common['Title separator'] : '');
			}
			else
				for ($i = 0; $i < $num_crumbs; ++$i)
				{
					if ($i < ($num_crumbs - 1))
						$crumbs .= '<span style="float: left; font-size: 12px; font-weight: normal;";>'.(($i >= 1) ? '<span>'.$lang_common['Crumb separator'].'</span>' : '').(is_array($forum_page['crumbs'][$i]) ? '<a href="'.$forum_page['crumbs'][$i][1].'">'.forum_htmlencode($forum_page['crumbs'][$i][0]).'</a>' : forum_htmlencode($forum_page['crumbs'][$i])).'</span> ';
					else
						$crumbs .= '<span style="float: left; font-size: 12px; font-weight: normal;";><span>'.(($i >= 1) ? '<span>'.$lang_common['Crumb separator'].'</span>' : '').'</span><h2 style="font-size: 12px; float: left; margin: -3px 0 0 0;">'.(is_array($forum_page['crumbs'][$i]) ? '<a href="'.$forum_page['crumbs'][$i][1].'">'.forum_htmlencode($forum_page['crumbs'][$i][0]).'</a>' : forum_htmlencode($forum_page['crumbs'][$i])).'</span></h2> <div style="clear: both;"></div>';
				}

			return $crumbs;
		]]></hook>
		<hook id="vf_modify_forum_info"><![CDATA[
        $current_url = forum_htmlencode(get_current_url());
		$seo_url = forum_sublink($forum_url['forum'], $forum_url['page'], (isset($_GET['p']) ? $_GET['p'] : 1), array($id, sef_friendly($cur_forum['forum_name'])));
		if ($seo_url !== $current_url) {
			header("Location: $seo_url", true, 301);
			exit();
		}
        ]]></hook>
        <hook id="vt_modify_topic_info"><![CDATA[
        $current_url = forum_htmlencode(get_current_url());
		if ($pid) {
			$seo_url = forum_link($forum_url['post'], $pid);
			if ($seo_url !== $current_url . '#p' . $pid) {
				header("Location: $seo_url", true, 301);
				exit();
			}
		} else if ($id) {
			$seo_url = forum_sublink($forum_url['topic'], $forum_url['page'], (isset($_GET['p']) ? $_GET['p'] : 1), array($id, sef_friendly($cur_topic['forum_name'] . ' ' . $cur_topic['subject'])));
            if ($seo_url !== $current_url) {
				header("Location: $seo_url", true, 301);
				exit();
			}
		}
        ]]></hook>
		<hook id="ps_handle_url_tag_start"><![CDATA[
		if (!$bbcode)
		{
			$full_url = str_replace(array(' ', '\'', '`', '"'), array('%20', '', '', ''), $url);
			if (strpos($url, 'www.') === 0)			// If it starts with www, we add http://
				$full_url = 'http://'.$full_url;
			else if (strpos($url, 'ftp.') === 0)	// Else if it starts with ftp, we add ftp://
				$full_url = 'ftp://'.$full_url;
			else if (!preg_match('#^([a-z0-9]{3,6})://#', $url)) 	// Else if it doesn't start with abcdef://, we add http://
				$full_url = 'http://'.$full_url;

			if (defined('FORUM_SUPPORT_PCRE_UNICODE') && defined('FORUM_ENABLE_IDNA'))
			{
				$link_name = ($link == '' || $link == $url) ? $url : $link;
				if (preg_match('!^(https?|ftp|news){1}'.preg_quote('://xn--', '!').'!', $link_name))
				{
					$link = $idn->decode($link_name);
				}
			}

			$link = ($link == '' || $link == $url) ? ((utf8_strlen($url) > 55) ? utf8_substr($url, 0 , 39).' … '.utf8_substr($url, -10) : $url) : stripslashes($link);
			return '<a href="'.$full_url.'" rel="nofollow">'.$link.'</a>';
		}
		]]>
		</hook>
	</hooks>
</extension>