index.php

<?php

use Symfony\Component\Yaml\Parser;

require_once './vendor/autoload.php';

$version = "2.2.16";

// Let's see if there's a search-parameter.
$parseurl = parse_url($_SERVER['REQUEST_URI']);

// Yeah, this is turning into a bit of black magic voodoo. Refactor at some point.
$prefix = dirname($parseurl['path']);
$prefix = strtr($prefix, array("/extensions" => "","/internals" => "", "/tutorial" => "", "/howto" => "", "/storage" => ""));

$request = str_replace($prefix, "", $parseurl['path']);

// Strip of beginning slash.
if (strpos($request, "/") === 0) {
    $request = substr($request, 1);
}

if (empty($request) || $request == "v20" || $request == "bolt-docs" || $request == "/" ) {
	header("location: ./introduction");
	die();
}

// Setup the parser and read the versions
$yaml = new Parser();
$versions = $yaml->parse(file_get_contents('versions.yml'));


// Determine if we're on 'docs' or on 'manual'
$hostname = $_SERVER['SERVER_NAME'];
if (strpos($hostname, 'manual') !== false) {
    $sourcefolder = './source_manual/';
    $menufile = 'menu_manual.yml';
    $sitetitle = 'Bolt user manual';
} else {
    if (in_array(ltrim($prefix, '/'), $versions)) {
        $sourcefolder = './version'.$prefix.'/source_docs/';
        $menufile = './version'.$prefix.'/menu_docs.yml';
        $sitetitle = 'Bolt documentation';
        $linkPrefix = $prefix;
        $prefix = '';
    } else {
        $sourcefolder = './source_docs/';
        $menufile = 'menu_docs.yml';
        $sitetitle = 'Bolt documentation';
    }

}

if (!file_exists($sourcefolder . $request . ".md")) {
    header("HTTP/1.0 404 Not Found");
    echo "No proper name for a page in the docs. Bye!";
    die();
}



$menu = $yaml->parse(file_get_contents($menufile));

$source = file_get_contents($sourcefolder . $request . ".md");
$source = \ParsedownExtra::instance()->text($source);
$source = Michelf\SmartyPants::defaultTransform($source);


preg_match("/<h1>(.*)<\/h1>/i", $source, $maintitle);

$maintitle = $maintitle[1];

preg_match_all("/<h2>(.*)<\/h2>/i", $source, $matches);
$submenu = array();
foreach ($matches[1] as $key => $title) {
	$submenu[ makeSlug(strip_tags($title)) ] = strip_tags($title);
}


// Let's see if there's a 'q' to highlight..
/* ----- This is broken: it also replaces _inside_ image tags. Not what we want.
if (!empty($_GET['q'])) {

    $q = makeSlug($_GET['q']);

    $source = preg_replace_callback("/" . $q . "/i", function($matches) {
        $output = sprintf("<mark id='%s'>%s</mark>",
            makeSlug($matches[0]),
            $matches[0]
        );
        return $output;
    }, $source);
}
---- */

// Markup for <h1> and <h2>..
$source = preg_replace_callback("/<h([234])>(.*)<\/h([234])>/i", function($matches) {
    $output = sprintf("<h%s id='%s'>%s<a href='#%s' class='anchor'>¶</a></h%s>",
                    $matches[1],
                    makeSlug($matches[2]),
                    $matches[2],
                    makeSlug($matches[2]),
                    $matches[1]
                );
    return $output;
}, $source);


$loader = new Twig_Loader_Filesystem('./view');
$twig = new Twig_Environment($loader, array(
/*    'cache' => './cache', */
));


// Add Dumper function to twig.
$dumper = new Twig_SimpleFunction(
    'dump',
    function ($var) { return dump($var); },
    array('is_safe' => array('html')
));
$twig->addFunction($dumper);


// Add markdown to twig.
$markdown = new Twig_SimpleFilter(
    'markdown',
    function ($content) { return \ParsedownExtra::instance()->text($content); },
    array('is_safe' => array('html')
));
$twig->addFilter($markdown);

// Add slug filter to twig.
$slug = new Twig_SimpleFilter(
    'slug',
    function ($name) { return \URLify::filter($name); },
    array('is_safe' => array('html')
));
$twig->addFilter($slug);

echo $twig->render('index.twig', array(
	'title' => $maintitle,
    'sitetitle' => $sitetitle,
	'source' => $source,
	'menu' => $menu,
	'submenu' => $submenu,
	'current' => $request,
	'version' => $version,
    'requested_page' => $request,
    'prefix' => ($prefix == "/" ? "" : $prefix),
    'linkPrefix' => ($linkPrefix == "/" ? "" : $linkPrefix)
));



// ----------





/**
 * Modify a string, so that we can use it for slugs. Like
 * safeString, but using hyphens instead of underscores.
 *
 * @param string $str
 * @param string $type
 * @return string
 */
function makeSlug($str) {

    return \URLify::filter(strip_tags($str));

}