DisallowedRawHtmlRenderer.php
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<?php
declare(strict_types=1);
/*
* This file is part of the league/commonmark package.
*
* (c) Colin O'Dell <colinodell@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace League\CommonMark\Extension\DisallowedRawHtml;
use League\CommonMark\Node\Node;
use League\CommonMark\Renderer\ChildNodeRendererInterface;
use League\CommonMark\Renderer\NodeRendererInterface;
use League\Config\ConfigurationAwareInterface;
use League\Config\ConfigurationInterface;
final class DisallowedRawHtmlRenderer implements NodeRendererInterface, ConfigurationAwareInterface
{
/** @psalm-readonly */
private NodeRendererInterface $innerRenderer;
/** @psalm-readonly-allow-private-mutation */
private ConfigurationInterface $config;
public function __construct(NodeRendererInterface $innerRenderer)
{
$this->innerRenderer = $innerRenderer;
}
public function render(Node $node, ChildNodeRendererInterface $childRenderer): ?string
{
$rendered = (string) $this->innerRenderer->render($node, $childRenderer);
if ($rendered === '') {
return '';
}
$tags = (array) $this->config->get('disallowed_raw_html/disallowed_tags');
if (\count($tags) === 0) {
return $rendered;
}
$regex = \sprintf('/<(\/?(?:%s)[ \/>])/i', \implode('|', \array_map('preg_quote', $tags)));
// Match these types of tags: <title> </title> <title x="sdf"> <title/> <title />
return \preg_replace($regex, '<$1', $rendered);
}
public function setConfiguration(ConfigurationInterface $configuration): void
{
$this->config = $configuration;
if ($this->innerRenderer instanceof ConfigurationAwareInterface) {
$this->innerRenderer->setConfiguration($configuration);
}
}
}