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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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* Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js) |
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* - (c) John MacFarlane |
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* |
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* Additional emphasis processing code based on commonmark-java (https://github.com/atlassian/commonmark-java) |
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* - (c) Atlassian Pty Ltd |
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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\CommonMark\Delimiter\Processor; |
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use League\CommonMark\Configuration\ConfigurationAwareInterface; |
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use League\CommonMark\Configuration\ConfigurationInterface; |
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use League\CommonMark\Delimiter\DelimiterInterface; |
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use League\CommonMark\Delimiter\Processor\DelimiterProcessorInterface; |
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use League\CommonMark\Extension\CommonMark\Node\Inline\Emphasis; |
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use League\CommonMark\Extension\CommonMark\Node\Inline\Strong; |
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use League\CommonMark\Node\Inline\AbstractStringContainer; |
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final class EmphasisDelimiterProcessor implements DelimiterProcessorInterface, ConfigurationAwareInterface |
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{ |
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/** @var string */ |
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private $char; |
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/** @var ConfigurationInterface|null */ |
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private $config; |
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/** |
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* @param string $char The emphasis character to use (typically '*' or '_') |
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*/ |
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public function __construct(string $char) |
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{ |
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$this->char = $char; |
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} |
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public function getOpeningCharacter(): string |
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{ |
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return $this->char; |
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} |
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public function getClosingCharacter(): string |
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{ |
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return $this->char; |
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} |
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public function getMinLength(): int |
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{ |
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return 1; |
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} |
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public function getDelimiterUse(DelimiterInterface $opener, DelimiterInterface $closer): int |
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{ |
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// "Multiple of 3" rule for internal delimiter runs |
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if (($opener->canClose() || $closer->canOpen()) && $closer->getOriginalLength() % 3 !== 0 && ($opener->getOriginalLength() + $closer->getOriginalLength()) % 3 === 0) { |
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return 0; |
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} |
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// Calculate actual number of delimiters used from this closer |
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if ($opener->getLength() >= 2 && $closer->getLength() >= 2) { |
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if ($this->config && $this->config->get('enable_strong', true)) { |
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return 2; |
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} |
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return 0; |
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} |
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if ($this->config && $this->config->get('enable_em', true)) { |
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return 1; |
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} |
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return 0; |
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} |
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public function process(AbstractStringContainer $opener, AbstractStringContainer $closer, int $delimiterUse): void |
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{ |
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if ($delimiterUse === 1) { |
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$emphasis = new Emphasis(); |
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} elseif ($delimiterUse === 2) { |
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$emphasis = new Strong(); |
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} else { |
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return; |
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} |
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$next = $opener->next(); |
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while ($next !== null && $next !== $closer) { |
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$tmp = $next->next(); |
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$emphasis->appendChild($next); |
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$next = $tmp; |
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} |
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$opener->insertAfter($emphasis); |
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} |
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public function setConfiguration(ConfigurationInterface $configuration): void |
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{ |
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$this->config = $configuration; |
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} |
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} |
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thephpleague /
commonmark
