86 lines
2.4 KiB
PHP
86 lines
2.4 KiB
PHP
<?php
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/*
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* This file is part of the league/commonmark package.
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*
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* (c) Colin O'Dell <colinodell@gmail.com>
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* (c) Rezo Zero / Ambroise Maupate
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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declare(strict_types=1);
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namespace League\CommonMark\Extension\Footnote\Parser;
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use League\CommonMark\Extension\Footnote\Node\FootnoteRef;
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use League\CommonMark\Inline\Parser\InlineParserInterface;
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use League\CommonMark\InlineParserContext;
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use League\CommonMark\Normalizer\SlugNormalizer;
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use League\CommonMark\Normalizer\TextNormalizerInterface;
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use League\CommonMark\Reference\Reference;
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use League\CommonMark\Util\ConfigurationAwareInterface;
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use League\CommonMark\Util\ConfigurationInterface;
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final class AnonymousFootnoteRefParser implements InlineParserInterface, ConfigurationAwareInterface
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{
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/** @var ConfigurationInterface */
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private $config;
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/** @var TextNormalizerInterface */
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private $slugNormalizer;
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public function __construct()
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{
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$this->slugNormalizer = new SlugNormalizer();
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}
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public function getCharacters(): array
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{
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return ['^'];
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}
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public function parse(InlineParserContext $inlineContext): bool
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{
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$container = $inlineContext->getContainer();
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$cursor = $inlineContext->getCursor();
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$nextChar = $cursor->peek();
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if ($nextChar !== '[') {
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return false;
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}
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$state = $cursor->saveState();
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$m = $cursor->match('/\^\[[^\n^\]]+\]/');
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if ($m !== null) {
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if (\preg_match('#\^\[([^\]]+)\]#', $m, $matches) > 0) {
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$reference = $this->createReference($matches[1]);
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$container->appendChild(new FootnoteRef($reference, $matches[1]));
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return true;
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}
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}
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$cursor->restoreState($state);
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return false;
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}
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private function createReference(string $label): Reference
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{
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$refLabel = $this->slugNormalizer->normalize($label);
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$refLabel = \mb_substr($refLabel, 0, 20);
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return new Reference(
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$refLabel,
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'#' . $this->config->get('footnote/footnote_id_prefix', 'fn:') . $refLabel,
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$label
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);
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}
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public function setConfiguration(ConfigurationInterface $config): void
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{
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$this->config = $config;
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}
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}
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