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<?php
declare (strict_types=1);
namespace Rector\Util;
use RectorPrefix202411\Nette\Utils\Strings;
use Rector\Exception\Configuration\InvalidConfigurationException;
use Rector\ValueObject\Configuration;
/**
* @inspiration https://github.com/phpstan/phpstan-src/commit/ccc046ca473dcdb5ce9225cc05d7808f2e327f40
*/
final class MemoryLimiter
{
/**
* @var string
* @see https://regex101.com/r/pmiGUM/1
*/
private const VALID_MEMORY_LIMIT_REGEX = '#^-?\\d+[kMG]?$#i';
public function adjust(Configuration $configuration) : void
{
$memoryLimit = $configuration->getMemoryLimit();
if ($memoryLimit === null) {
return;
}
$this->validateMemoryLimitFormat($memoryLimit);
$memorySetResult = \ini_set('memory_limit', $memoryLimit);
if ($memorySetResult === \false) {
$errorMessage = \sprintf('Memory limit "%s" cannot be set.', $memoryLimit);
throw new InvalidConfigurationException($errorMessage);
}
}
private function validateMemoryLimitFormat(string $memoryLimit) : void
{
$memoryLimitFormatMatch = Strings::match($memoryLimit, self::VALID_MEMORY_LIMIT_REGEX);
if ($memoryLimitFormatMatch !== null) {
return;
}
$errorMessage = \sprintf('Invalid memory limit format "%s".', $memoryLimit);
throw new InvalidConfigurationException($errorMessage);
}
}