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<?php
/*
* This file is part of the league/commonmark package.
*
* (c) Colin O'Dell <colinodell@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace League\CommonMark\Extension\Mention;
use League\CommonMark\ConfigurableEnvironmentInterface;
use League\CommonMark\Exception\InvalidOptionException;
use League\CommonMark\Extension\ExtensionInterface;
use League\CommonMark\Extension\Mention\Generator\MentionGeneratorInterface;
final class MentionExtension implements ExtensionInterface
{
public function register(ConfigurableEnvironmentInterface $environment)
{
$mentions = $environment->getConfig('mentions', []);
foreach ($mentions as $name => $mention) {
if (\array_key_exists('symbol', $mention)) {
@\trigger_error('The "mentions/*/symbol" configuration option is deprecated in league/commonmark 1.6; rename "symbol" to "prefix" for compatibility with 2.0', \E_USER_DEPRECATED);
$mention['prefix'] = $mention['symbol'];
}
if (\array_key_exists('pattern', $mention)) {
// v2.0 does not allow full regex patterns passeed into the configuration
if (!self::isAValidPartialRegex($mention['pattern'])) {
throw new InvalidOptionException(\sprintf('Option "mentions/%s/pattern" must not include starting/ending delimiters (like "/")', $name));
}
$mention['pattern'] = '/' . $mention['pattern'] . '/i';
} elseif (\array_key_exists('regex', $mention)) {
@\trigger_error('The "mentions/*/regex" configuration option is deprecated in league/commonmark 1.6; rename "regex" to "pattern" for compatibility with 2.0', \E_USER_DEPRECATED);
$mention['pattern'] = $mention['regex'];
}
foreach (['prefix', 'pattern', 'generator'] as $key) {
if (empty($mention[$key])) {
throw new \RuntimeException("Missing \"$key\" from MentionParser configuration");
}
}
if ($mention['generator'] instanceof MentionGeneratorInterface) {
$environment->addInlineParser(new MentionParser($mention['prefix'], $mention['pattern'], $mention['generator']));
} elseif (is_string($mention['generator'])) {
$environment->addInlineParser(MentionParser::createWithStringTemplate($mention['prefix'], $mention['pattern'], $mention['generator']));
} elseif (is_callable($mention['generator'])) {
$environment->addInlineParser(MentionParser::createWithCallback($mention['prefix'], $mention['pattern'], $mention['generator']));
} else {
throw new \RuntimeException(sprintf('The "generator" provided for the MentionParser configuration must be a string template, callable, or an object that implements %s.', MentionGeneratorInterface::class));
}
}
}
private static function isAValidPartialRegex(string $regex): bool
{
$regex = '/' . $regex . '/i';
return @\preg_match($regex, '') !== false;
}
}