Subversion-Projekte lars-tiefland.laravel_shop

<?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\Parser\Block\BlockStart;

use League\CommonMark\Parser\Block\BlockStartParserInterface;

use League\CommonMark\Parser\Cursor;

use League\CommonMark\Parser\MarkdownParserStateInterface;

use League\CommonMark\Reference\Reference;

use League\CommonMark\Util\RegexHelper;

final class FootnoteStartParser implements BlockStartParserInterface

{

    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart

    {

        if ($cursor->isIndented() || $parserState->getLastMatchedBlockParser()->canHaveLazyContinuationLines()) {

            return BlockStart::none();

        }

        $match = RegexHelper::matchFirst(

            '/^\[\^([^\s^\]]+)\]\:(?:\s|$)/',

            $cursor->getLine(),

            $cursor->getNextNonSpacePosition()

        );

        if (! $match) {

            return BlockStart::none();

        }

        $cursor->advanceToNextNonSpaceOrTab();

        $cursor->advanceBy(\strlen($match[0]));

        $str = $cursor->getRemainder();

        \preg_replace('/^\[\^([^\s^\]]+)\]\:(?:\s|$)/', '', $str);

        if (\preg_match('/^\[\^([^\s^\]]+)\]\:(?:\s|$)/', $match[0], $matches) !== 1) {

            return BlockStart::none();

        }

        $reference      = new Reference($matches[1], $matches[1], $matches[1]);

        $footnoteParser = new FootnoteParser($reference);

        return BlockStart::of($footnoteParser)->at($cursor);

    }

}