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<?php
/*
* This file is part of the league/commonmark package.
*
* (c) Colin O'Dell <colinodell@gmail.com>
* (c) Rezo Zero / Ambroise Maupate
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace League\CommonMark\Extension\Footnote\Parser;
use League\CommonMark\Block\Parser\BlockParserInterface;
use League\CommonMark\ContextInterface;
use League\CommonMark\Cursor;
use League\CommonMark\Extension\Footnote\Node\Footnote;
use League\CommonMark\Reference\Reference;
use League\CommonMark\Util\RegexHelper;
final class FootnoteParser implements BlockParserInterface
{
public function parse(ContextInterface $context, Cursor $cursor): bool
{
if ($cursor->isIndented()) {
return false;
}
$match = RegexHelper::matchFirst(
'/^\[\^([^\n^\]]+)\]\:\s/',
$cursor->getLine(),
$cursor->getNextNonSpacePosition()
);
if (!$match) {
return false;
}
$cursor->advanceToNextNonSpaceOrTab();
$cursor->advanceBy(\strlen($match[0]));
$str = $cursor->getRemainder();
\preg_replace('/^\[\^([^\n^\]]+)\]\:\s/', '', $str);
if (\preg_match('/^\[\^([^\n^\]]+)\]\:\s/', $match[0], $matches) > 0) {
$context->addBlock($this->createFootnote($matches[1]));
$context->setBlocksParsed(true);
return true;
}
return false;
}
private function createFootnote(string $label): Footnote
{
return new Footnote(
new Reference($label, $label, $label)
);
}
}