Generate a sitemap.xml and HTML-Sitemap Twig-Var for Pico - https://github.com/Techn0tic/Pico_Sitemap

pico_sitemap.php

<?php

/**
 * Generate an xml sitemap for Pico
 *
 * @author Dave Kinsella
 * @link https://github.com/Techn0tic/Pico_Sitemap
 * @license http://opensource.org/licenses/MIT
 * 
 * @author Tom Witkowski
 * @link https://github.com/Gummibeer
 */
class Pico_Sitemap {
	private $is_sitemap;
	private $is_html_sitemap;
	private $exclude;
	private $pages;

	public function __construct() {
		$this->is_sitemap = false;
		$this->is_html_sitemap = false;
		$this->exclude = array('home', 'slider', 'suche', 'sitemap');
		$this->pages = array();
	}

	public function request_url(&$url) {
		if($url == 'sitemap') $this->is_html_sitemap = true;
		if($url == 'sitemap.xml') $this->is_sitemap = true;
	}
	
	public function get_pages($pages) {
		if($this->is_sitemap || $this->is_html_sitemap) {
			global $config;
			foreach($pages as $page) {
				preg_match('/\/('.implode('|', $this->exclude).')\//', $page['url'].'/', $matches);
				if(empty($matches)) {
					$index = '';
					$date = false;
					$path = realpath(dirname(__FILE__)).DIRECTORY_SEPARATOR.'..'.DIRECTORY_SEPARATOR.'content'.DIRECTORY_SEPARATOR.str_ireplace($config['base_url'], '', $page['url']);
					if(is_dir($path)) { $index = 'index'; }
					$file = realpath($path.$index.'.md');
					if(file_exists($file)) { $date = date ("Y-m-d", filemtime($file)); }
					array_push($this->pages, array( 'url' => $page['url'], 'title' => $page['title'], 'lastmod' => $date, 'index' => $index == '' ? false : true ));
				}
			}
			sort($this->pages);
		}
	}

	public function before_render(&$twig_vars, &$twig, &$template) {
		if($this->is_sitemap) {
			header($_SERVER['SERVER_PROTOCOL'].' 200 OK');
			header('Content-Type: application/xml; charset=UTF-8');
			$xml = '<?xml version="1.0" encoding="UTF-8"?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">';
			foreach($this->pages as $page) {
				$xml .= '<url><loc>'.$page['url'].'</loc><lastmod>'.$page['lastmod'].'</lastmod></url>';
			}
			$xml .= '</urlset>';
			header('Content-Type: text/xml');
			die($xml);
		} elseif($this->is_html_sitemap) {
			$panel_raw = '<div class="col-md-4"><div class="panel panel-primary"><div class="panel-heading"><h3 class="panel-title"><a href="%url%">%title%</a></h3></div><div class="list-group">%childs%</div></div></div>';
			$child_raw = '<a href="%url%" class="list-group-item"><i class="icon-link"></i> %title%</a>';

			$panel = '';
			$childs = array();
			$out = '';
			$out .= '<div class="row">';
			foreach($this->pages as $page) {
				if($page['index']) {
					$panel = str_replace('%childs%', implode('', $childs), $panel);
					$out .= $panel;
					$childs = array();
					$panel = $panel_raw;
					$panel = str_replace('%url%', $page['url'], $panel);
					$panel = str_replace('%title%', $page['title'], $panel);
				} else {
					$child = $child_raw;
					$child = str_replace('%url%', $page['url'], $child);
					$child = str_replace('%title%', $page['title'], $child);
					array_push($childs, $child);
				}
			}
			$panel = str_replace('%childs%', implode('', $childs), $panel);
			$out .= $panel;
			$out .= '</div>';
			$twig_vars['sitemap'] = $out;
		}
	}
}