Viewing file:  EmphasisDelimiterProcessor.php (3.15 KB) -rwxrwxr-x
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<?php
declare(strict_types=1);
/*
* This file is part of the league/commonmark package.
*
* (c) Colin O'Dell <colinodell@gmail.com>
*
* Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
* - (c) John MacFarlane
*
* Additional emphasis processing code based on commonmark-java (https://github.com/atlassian/commonmark-java)
* - (c) Atlassian Pty Ltd
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace League\CommonMark\Extension\CommonMark\Delimiter\Processor;
use League\CommonMark\Delimiter\DelimiterInterface;
use League\CommonMark\Delimiter\Processor\DelimiterProcessorInterface;
use League\CommonMark\Extension\CommonMark\Node\Inline\Emphasis;
use League\CommonMark\Extension\CommonMark\Node\Inline\Strong;
use League\CommonMark\Node\Inline\AbstractStringContainer;
use League\Config\ConfigurationAwareInterface;
use League\Config\ConfigurationInterface;
final class EmphasisDelimiterProcessor implements DelimiterProcessorInterface, ConfigurationAwareInterface
{
/** @psalm-readonly */
private string $char;
/** @psalm-readonly-allow-private-mutation */
private ConfigurationInterface $config;
/**
* @param string $char The emphasis character to use (typically '*' or '_')
*/
public function __construct(string $char)
{
$this->char = $char;
}
public function getOpeningCharacter(): string
{
return $this->char;
}
public function getClosingCharacter(): string
{
return $this->char;
}
public function getMinLength(): int
{
return 1;
}
public function getDelimiterUse(DelimiterInterface $opener, DelimiterInterface $closer): int
{
// "Multiple of 3" rule for internal delimiter runs
if (($opener->canClose() || $closer->canOpen()) && $closer->getOriginalLength() % 3 !== 0 && ($opener->getOriginalLength() + $closer->getOriginalLength()) % 3 === 0) {
return 0;
}
// Calculate actual number of delimiters used from this closer
if ($opener->getLength() >= 2 && $closer->getLength() >= 2) {
if ($this->config->get('commonmark/enable_strong')) {
return 2;
}
return 0;
}
if ($this->config->get('commonmark/enable_em')) {
return 1;
}
return 0;
}
public function process(AbstractStringContainer $opener, AbstractStringContainer $closer, int $delimiterUse): void
{
if ($delimiterUse === 1) {
$emphasis = new Emphasis($this->char);
} elseif ($delimiterUse === 2) {
$emphasis = new Strong($this->char . $this->char);
} else {
return;
}
$next = $opener->next();
while ($next !== null && $next !== $closer) {
$tmp = $next->next();
$emphasis->appendChild($next);
$next = $tmp;
}
$opener->insertAfter($emphasis);
}
public function setConfiguration(ConfigurationInterface $configuration): void
{
$this->config = $configuration;
}
}
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