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📄 Fields.php(5.82 KB)
📄 FieldsInterface.php(4.17 KB)
📄 MaxTrait.php(800 B)
📄 MaxUuid.php(645 B)
📄 NilTrait.php(768 B)
📄 NilUuid.php(644 B)
📄 TimeTrait.php(1.36 KB)
📄 UuidBuilder.php(4.25 KB)
📄 UuidInterface.php(643 B)
📄 UuidV1.php(1.99 KB)
📄 UuidV2.php(4.21 KB)
📄 UuidV3.php(2.03 KB)
📄 UuidV4.php(1.92 KB)
📄 UuidV5.php(2.03 KB)
📄 UuidV6.php(768 B)
📄 UuidV7.php(1.99 KB)
📄 UuidV8.php(2.24 KB)
📄 Validator.php(1.19 KB)
📄 VariantTrait.php(3 KB)
📄 VersionTrait.php(2.16 KB)

Editing: Fields.php

<?php

/**
 * This file is part of the ramsey/uuid library
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
 * @license http://opensource.org/licenses/MIT MIT
 */

declare(strict_types=1);

namespace Ramsey\Uuid\Rfc4122;

use Ramsey\Uuid\Exception\InvalidArgumentException;
use Ramsey\Uuid\Fields\SerializableFieldsTrait;
use Ramsey\Uuid\Type\Hexadecimal;
use Ramsey\Uuid\Uuid;

use function bin2hex;
use function dechex;
use function hexdec;
use function sprintf;
use function str_pad;
use function strlen;
use function substr;
use function unpack;

use const STR_PAD_LEFT;

/**
 * RFC 9562 (formerly RFC 4122) variant UUIDs consist of a set of named fields
 *
 * Internally, this class represents the fields together as a 16-byte binary string.
 *
 * @immutable
 */
final class Fields implements FieldsInterface
{
    use MaxTrait;
    use NilTrait;
    use SerializableFieldsTrait;
    use VariantTrait;
    use VersionTrait;

/**
     * @param string $bytes A 16-byte binary string representation of a UUID
     *
     * @throws InvalidArgumentException if the byte string is not exactly 16 bytes
     * @throws InvalidArgumentException if the byte string does not represent an RFC 9562 (formerly RFC 4122) UUID
     * @throws InvalidArgumentException if the byte string does not contain a valid version
     */
    public function __construct(private string $bytes)
    {
        if (strlen($this->bytes) !== 16) {
            throw new InvalidArgumentException(
                'The byte string must be 16 bytes long; ' . 'received ' . strlen($this->bytes) . ' bytes',
            );
        }

if (!$this->isCorrectVariant()) {
            throw new InvalidArgumentException(
                'The byte string received does not conform to the RFC 9562 (formerly RFC 4122) variant',
            );
        }

if (!$this->isCorrectVersion()) {
            throw new InvalidArgumentException(
                'The byte string received does not contain a valid RFC 9562 (formerly RFC 4122) version',
            );
        }
    }

public function getBytes(): string
    {
        return $this->bytes;
    }

public function getClockSeq(): Hexadecimal
    {
        if ($this->isMax()) {
            $clockSeq = 0xffff;
        } elseif ($this->isNil()) {
            $clockSeq = 0x0000;
        } else {
            $clockSeq = hexdec(bin2hex(substr($this->bytes, 8, 2))) & 0x3fff;
        }

return new Hexadecimal(str_pad(dechex($clockSeq), 4, '0', STR_PAD_LEFT));
    }

public function getClockSeqHiAndReserved(): Hexadecimal
    {
        return new Hexadecimal(bin2hex(substr($this->bytes, 8, 1)));
    }

public function getClockSeqLow(): Hexadecimal
    {
        return new Hexadecimal(bin2hex(substr($this->bytes, 9, 1)));
    }

public function getNode(): Hexadecimal
    {
        return new Hexadecimal(bin2hex(substr($this->bytes, 10)));
    }

public function getTimeHiAndVersion(): Hexadecimal
    {
        return new Hexadecimal(bin2hex(substr($this->bytes, 6, 2)));
    }

public function getTimeLow(): Hexadecimal
    {
        return new Hexadecimal(bin2hex(substr($this->bytes, 0, 4)));
    }

public function getTimeMid(): Hexadecimal
    {
        return new Hexadecimal(bin2hex(substr($this->bytes, 4, 2)));
    }

/**
     * Returns the full 60-bit timestamp, without the version
     *
     * For version 2 UUIDs, the time_low field is the local identifier and should not be returned as part of the time.
     * For this reason, we set the bottom 32 bits of the timestamp to 0's. As a result, there is some loss of timestamp
     * fidelity, for version 2 UUIDs. The timestamp can be off by a range of 0 to 429.4967295 seconds (or 7 minutes, 9
     * seconds, and 496,730 microseconds).
     *
     * For version 6 UUIDs, the timestamp order is reversed from the typical RFC 9562 (formerly RFC 4122) order (the
     * time bits are in the correct bit order, so that it is monotonically increasing). In returning the timestamp
     * value, we put the bits in the order: time_low + time_mid + time_hi.
     */
    public function getTimestamp(): Hexadecimal
    {
        return new Hexadecimal(match ($this->getVersion()) {
            Uuid::UUID_TYPE_DCE_SECURITY => sprintf(
                '%03x%04s%08s',
                hexdec($this->getTimeHiAndVersion()->toString()) & 0x0fff,
                $this->getTimeMid()->toString(),
                ''
            ),
            Uuid::UUID_TYPE_REORDERED_TIME => sprintf(
                '%08s%04s%03x',
                $this->getTimeLow()->toString(),
                $this->getTimeMid()->toString(),
                hexdec($this->getTimeHiAndVersion()->toString()) & 0x0fff
            ),
            // The Unix timestamp in version 7 UUIDs is a 48-bit number, but for consistency, we will return a 60-bit
            // number, padded to the left with zeros.
            Uuid::UUID_TYPE_UNIX_TIME => sprintf(
                '%011s%04s',
                $this->getTimeLow()->toString(),
                $this->getTimeMid()->toString(),
            ),
            default => sprintf(
                '%03x%04s%08s',
                hexdec($this->getTimeHiAndVersion()->toString()) & 0x0fff,
                $this->getTimeMid()->toString(),
                $this->getTimeLow()->toString()
            ),
        });
    }

public function getVersion(): ?int
    {
        if ($this->isNil() || $this->isMax()) {
            return null;
        }

/** @var int[] $parts */
        $parts = unpack('n*', $this->bytes);

return $parts[4] >> 12;
    }

private function isCorrectVariant(): bool
    {
        if ($this->isNil() || $this->isMax()) {
            return true;
        }

return $this->getVariant() === Uuid::RFC_4122;
    }
}

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