home/alospiesjs/www/apis/youtube/vendor/ramsey/uuid/src/Generator/DefaultTimeGenerator.php000060400000010154151163615370026174 0ustar00 * @license http://opensource.org/licenses/MIT MIT */ declare(strict_types=1); namespace Ramsey\Uuid\Generator; use Ramsey\Uuid\Converter\TimeConverterInterface; use Ramsey\Uuid\Exception\InvalidArgumentException; use Ramsey\Uuid\Exception\RandomSourceException; use Ramsey\Uuid\Exception\TimeSourceException; use Ramsey\Uuid\Provider\NodeProviderInterface; use Ramsey\Uuid\Provider\TimeProviderInterface; use Ramsey\Uuid\Type\Hexadecimal; use Throwable; use function ctype_xdigit; use function dechex; use function hex2bin; use function is_int; use function pack; use function sprintf; use function str_pad; use function strlen; use const STR_PAD_LEFT; /** * DefaultTimeGenerator generates strings of binary data based on a node ID, * clock sequence, and the current time */ class DefaultTimeGenerator implements TimeGeneratorInterface { /** * @var NodeProviderInterface */ private $nodeProvider; /** * @var TimeConverterInterface */ private $timeConverter; /** * @var TimeProviderInterface */ private $timeProvider; public function __construct( NodeProviderInterface $nodeProvider, TimeConverterInterface $timeConverter, TimeProviderInterface $timeProvider ) { $this->nodeProvider = $nodeProvider; $this->timeConverter = $timeConverter; $this->timeProvider = $timeProvider; } /** * @throws InvalidArgumentException if the parameters contain invalid values * @throws RandomSourceException if random_int() throws an exception/error * * @inheritDoc */ public function generate($node = null, ?int $clockSeq = null): string { if ($node instanceof Hexadecimal) { $node = $node->toString(); } $node = $this->getValidNode($node); if ($clockSeq === null) { try { // This does not use "stable storage"; see RFC 4122, Section 4.2.1.1. $clockSeq = random_int(0, 0x3fff); } catch (Throwable $exception) { throw new RandomSourceException( $exception->getMessage(), (int) $exception->getCode(), $exception ); } } $time = $this->timeProvider->getTime(); $uuidTime = $this->timeConverter->calculateTime( $time->getSeconds()->toString(), $time->getMicroseconds()->toString() ); $timeHex = str_pad($uuidTime->toString(), 16, '0', STR_PAD_LEFT); if (strlen($timeHex) !== 16) { throw new TimeSourceException(sprintf( 'The generated time of \'%s\' is larger than expected', $timeHex )); } $timeBytes = (string) hex2bin($timeHex); return $timeBytes[4] . $timeBytes[5] . $timeBytes[6] . $timeBytes[7] . $timeBytes[2] . $timeBytes[3] . $timeBytes[0] . $timeBytes[1] . pack('n*', $clockSeq) . $node; } /** * Uses the node provider given when constructing this instance to get * the node ID (usually a MAC address) * * @param string|int|null $node A node value that may be used to override the node provider * * @return string 6-byte binary string representation of the node * * @throws InvalidArgumentException */ private function getValidNode($node): string { if ($node === null) { $node = $this->nodeProvider->getNode(); } // Convert the node to hex, if it is still an integer. if (is_int($node)) { $node = dechex($node); } if (!ctype_xdigit((string) $node) || strlen((string) $node) > 12) { throw new InvalidArgumentException('Invalid node value'); } return (string) hex2bin(str_pad((string) $node, 12, '0', STR_PAD_LEFT)); } }