<?php
declare(strict_types=1);
namespace GitList\App\Twig;
use League\CommonMark\Environment\Environment;
use League\CommonMark\Extension\Autolink\AutolinkExtension;
use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
use League\CommonMark\Extension\GithubFlavoredMarkdownExtension;
use League\CommonMark\Extension\TaskList\TaskListExtension;
use League\CommonMark\MarkdownConverter;
use Twig\Extension\AbstractExtension;
use Twig\TwigFilter;
class MarkdownExtension extends AbstractExtension
{
private MarkdownConverter $converter;
public function __construct()
{
$environment = new Environment([
'html_input' => 'strip',
'allow_unsafe_links' => false,
]);
$environment->addExtension(new CommonMarkCoreExtension());
$environment->addExtension(new GithubFlavoredMarkdownExtension());
$environment->addExtension(new AutolinkExtension());
$environment->addExtension(new TaskListExtension());
$this->converter = new MarkdownConverter($environment);
}
public function getFilters()
{
return [
new TwigFilter('markdown', [$this, 'markdown']),
];
}
public function markdown($string): string
{
if (!$string) {
return '';
}
return (string) $this->converter->convertToHtml($string);
}
}
