MarkdownFormattingToHTML.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\Refinery\String;
 
use ILIAS\Refinery\Transformation;
use League\CommonMark\MarkdownConverter;
use League\CommonMark\Environment\Environment;
use League\CommonMark\Extension\DisallowedRawHtml\DisallowedRawHtmlExtension;
use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
 
class MarkdownFormattingToHTML
{
    private MarkdownConverter $converter;
 
    public function __construct(bool $escape = true)
    {
        $config = [
            'html_input' => 'escape',
            'renderer' => [
                'soft_break' => "<br/>"
            ],
            'allow_unsafe_links' => false,
            'max_nesting_level' => 42 // https://commonmark.thephpleague.com/1.5/security/#nesting-level
        ];
 
        $environment = new Environment($config);
        $environment->addExtension(new CommonMarkCoreExtension());
        $this->converter = new MarkDownConverter($environment);
    }
 
    public function toHTML(): Transformation
    {
        return new \ILIAS\Refinery\Custom\Transformation(
            fn($value) => $this->converter->convert($value)->getContent()
        );
    }
}