A Custom Markdown Parser for Jigsaw projects.

CustomParser.php

<?php

namespace App\Markdown;

use Illuminate\Container\Container;
use League\CommonMark\Block\Element\FencedCode;
use League\CommonMark\Block\Element\IndentedCode;
use League\CommonMark\CommonMarkConverter;
use League\CommonMark\Environment;
use League\CommonMark\Extension\ExternalLink\ExternalLinkExtension;
use Spatie\CommonMarkHighlighter\FencedCodeRenderer;
use Spatie\CommonMarkHighlighter\IndentedCodeRenderer;
use TightenCo\Jigsaw\Parsers\MarkdownParser;

class CustomParser extends MarkdownParser
{
    protected static array $languages = [
        'html', 'php', 'js', 'css',
    ];

    protected CommonMarkConverter $commonmark;

    protected Container $container;

    public function __construct()
    {
        parent::__construct();

        $this->container = Container::getInstance();
        $this->commonmark = $this->createCommonmark();
    }

    protected function createCommonmark(): CommonMarkConverter
    {
        $environment = Environment::createCommonMarkEnvironment();

        if ($this->container->config['production']) {
            $environment->addBlockRenderer(FencedCode::class, new FencedCodeRenderer(static::$languages));
            $environment->addBlockRenderer(IndentedCode::class, new IndentedCodeRenderer(static::$languages));
        }

        $environment->addExtension(new ExternalLinkExtension());

        $config = [
            'external_link' => [
                'internal_hosts' => 'stefanzweifel.io',
                'open_in_new_window' => true,
                'html_class' => 'external-link',
            ],
        ];

        return new CommonMarkConverter($config, $environment);
    }

    public function parse($markdown): string
    {
        return $this->commonmark->convertToHtml($markdown);
    }
}