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<?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 <[email protected]> |
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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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namespace League\CommonMark\Extension\HeadingPermalink; |
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use League\CommonMark\Block\Element\Heading; |
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use League\CommonMark\Event\DocumentParsedEvent; |
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use League\CommonMark\Exception\InvalidOptionException; |
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use League\CommonMark\Extension\HeadingPermalink\Slug\SlugGeneratorInterface as DeprecatedSlugGeneratorInterface; |
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use League\CommonMark\Inline\Element\Code; |
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use League\CommonMark\Inline\Element\Text; |
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use League\CommonMark\Node\Node; |
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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\Util\ConfigurationAwareInterface; |
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use League\CommonMark\Util\ConfigurationInterface; |
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/** |
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* Searches the Document for Heading elements and adds HeadingPermalinks to each one |
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*/ |
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final class HeadingPermalinkProcessor implements ConfigurationAwareInterface |
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{ |
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const INSERT_BEFORE = 'before'; |
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const INSERT_AFTER = 'after'; |
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/** @var TextNormalizerInterface|DeprecatedSlugGeneratorInterface */ |
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private $slugNormalizer; |
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/** @var ConfigurationInterface */ |
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private $config; |
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/** |
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* @param TextNormalizerInterface|DeprecatedSlugGeneratorInterface|null $slugNormalizer |
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*/ |
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public function __construct($slugNormalizer = null) |
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{ |
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if ($slugNormalizer instanceof DeprecatedSlugGeneratorInterface) { |
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@trigger_error(sprintf('Passing a %s into the %s constructor is deprecated; use a %s instead', DeprecatedSlugGeneratorInterface::class, self::class, TextNormalizerInterface::class), E_USER_DEPRECATED); |
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} |
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$this->slugNormalizer = $slugNormalizer ?? new SlugNormalizer(); |
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} |
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public function setConfiguration(ConfigurationInterface $configuration) |
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{ |
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$this->config = $configuration; |
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} |
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public function __invoke(DocumentParsedEvent $e): void |
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{ |
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$this->useNormalizerFromConfigurationIfProvided(); |
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$walker = $e->getDocument()->walker(); |
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while ($event = $walker->next()) { |
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$node = $event->getNode(); |
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if ($node instanceof Heading && $event->isEntering()) { |
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$this->addHeadingLink($node); |
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} |
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} |
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} |
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private function useNormalizerFromConfigurationIfProvided(): void |
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{ |
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$generator = $this->config->get('heading_permalink/slug_normalizer'); |
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if ($generator === null) { |
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return; |
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} |
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if (!($generator instanceof DeprecatedSlugGeneratorInterface || $generator instanceof TextNormalizerInterface)) { |
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throw new InvalidOptionException('The heading_permalink/slug_normalizer option must be an instance of ' . TextNormalizerInterface::class); |
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} |
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$this->slugNormalizer = $generator; |
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} |
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private function addHeadingLink(Heading $heading): void |
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{ |
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$text = $this->getChildText($heading); |
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if ($this->slugNormalizer instanceof DeprecatedSlugGeneratorInterface) { |
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$slug = $this->slugNormalizer->createSlug($text); |
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} else { |
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$slug = $this->slugNormalizer->normalize($text, $heading); |
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} |
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$headingLinkAnchor = new HeadingPermalink($slug); |
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switch ($this->config->get('heading_permalink/insert', 'before')) { |
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case self::INSERT_BEFORE: |
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$heading->prependChild($headingLinkAnchor); |
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return; |
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case self::INSERT_AFTER: |
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$heading->appendChild($headingLinkAnchor); |
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return; |
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default: |
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throw new \RuntimeException("Invalid configuration value for heading_permalink/insert; expected 'before' or 'after'"); |
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} |
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} |
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/** |
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* @deprecated Not needed in 2.0 |
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*/ |
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private function getChildText(Node $node): string |
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{ |
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$text = ''; |
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$walker = $node->walker(); |
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while ($event = $walker->next()) { |
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if ($event->isEntering() && (($child = $event->getNode()) instanceof Text || $child instanceof Code)) { |
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$text .= $child->getContent(); |
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} |
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} |
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return $text; |
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} |
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} |
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thephpleague /
commonmark
This method has been deprecated. The supplier of the class has supplied an explanatory message.
The explanatory message should give you some clue as to whether and when the method will be removed from the class and what other method or class to use instead.