*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare (strict_types=1);
namespace RectorPrefix202411\Fidry\CpuCoreCounter\Finder;
use function getenv;
use function preg_match;
use function sprintf;
use function var_export;
final class EnvVariableFinder implements CpuCoreFinder
{
/** @var string */
private $environmentVariableName;
public function __construct(string $environmentVariableName)
{
$this->environmentVariableName = $environmentVariableName;
}
public function diagnose() : string
{
$value = getenv($this->environmentVariableName);
return sprintf('parse(getenv(%s)=%s)=%s', $this->environmentVariableName, var_export($value, \true), self::isPositiveInteger($value) ? $value : 'null');
}
public function find() : ?int
{
$value = getenv($this->environmentVariableName);
return self::isPositiveInteger($value) ? (int) $value : null;
}
public function toString() : string
{
return sprintf('getenv(%s)', $this->environmentVariableName);
}
/**
* @param string|false $value
*/
private static function isPositiveInteger($value) : bool
{
return \false !== $value && 1 === preg_match('/^\\d+$/', $value) && (int) $value > 0;
}
}