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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\Embed;
use League\CommonMark\Event\DocumentParsedEvent;
use League\CommonMark\Extension\CommonMark\Node\Inline\Link;
use League\CommonMark\Node\Block\Paragraph;
use League\CommonMark\Node\Inline\Text;
use League\CommonMark\Node\NodeIterator;
final class EmbedProcessor
{
public const FALLBACK_REMOVE = 'remove';
public const FALLBACK_LINK = 'link';
private EmbedAdapterInterface $adapter;
private string $fallback;
public function __construct(EmbedAdapterInterface $adapter, string $fallback = self::FALLBACK_REMOVE)
{
$this->adapter = $adapter;
$this->fallback = $fallback;
}
public function __invoke(DocumentParsedEvent $event): void
{
$document = $event->getDocument();
$embeds = [];
foreach (new NodeIterator($document) as $node) {
if (! ($node instanceof Embed)) {
continue;
}
if ($node->parent() !== $document) {
$replacement = new Paragraph();
$replacement->appendChild(new Text($node->getUrl()));
$node->replaceWith($replacement);
} else {
$embeds[] = $node;
}
}
$this->adapter->updateEmbeds($embeds);
foreach ($embeds as $embed) {
if ($embed->getEmbedCode() !== null) {
continue;
}
if ($this->fallback === self::FALLBACK_REMOVE) {
$embed->detach();
} elseif ($this->fallback === self::FALLBACK_LINK) {
$paragraph = new Paragraph();
$paragraph->appendChild(new Link($embed->getUrl(), $embed->getUrl()));
$embed->replaceWith($paragraph);
}
}
}
}
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