Subversion-Projekte lars-tiefland.laravel_shop

<?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\Guid;

use Ramsey\Uuid\Exception\InvalidArgumentException;

use Ramsey\Uuid\Fields\SerializableFieldsTrait;

use Ramsey\Uuid\Rfc4122\FieldsInterface;

use Ramsey\Uuid\Rfc4122\MaxTrait;

use Ramsey\Uuid\Rfc4122\NilTrait;

use Ramsey\Uuid\Rfc4122\VariantTrait;

use Ramsey\Uuid\Rfc4122\VersionTrait;

use Ramsey\Uuid\Type\Hexadecimal;

use Ramsey\Uuid\Uuid;

use function bin2hex;

use function dechex;

use function hexdec;

use function pack;

use function sprintf;

use function str_pad;

use function strlen;

use function substr;

use function unpack;

use const STR_PAD_LEFT;

/**

 * GUIDs are comprised of a set of named fields, according to RFC 4122

 *

 * @see Guid

 *

 * @psalm-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 a GUID

     * @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 '

                . '4122 or Microsoft Corporation variants'

            );

        }

        if (!$this->isCorrectVersion()) {

            throw new InvalidArgumentException(

                'The byte string received does not contain a valid version'

            );

        }

    }

    public function getBytes(): string

    {

        return $this->bytes;

    }

    public function getTimeLow(): Hexadecimal

    {

        // Swap the bytes from little endian to network byte order.

        /** @var array $hex */

        $hex = unpack(

            'H*',

            pack(

                'v*',

                hexdec(bin2hex(substr($this->bytes, 2, 2))),

                hexdec(bin2hex(substr($this->bytes, 0, 2)))

            )

        );

        return new Hexadecimal((string) ($hex[1] ?? ''));

    }

    public function getTimeMid(): Hexadecimal

    {

        // Swap the bytes from little endian to network byte order.

        /** @var array $hex */

        $hex = unpack(

            'H*',

            pack(

                'v',

                hexdec(bin2hex(substr($this->bytes, 4, 2)))

            )

        );

        return new Hexadecimal((string) ($hex[1] ?? ''));

    }

    public function getTimeHiAndVersion(): Hexadecimal

    {

        // Swap the bytes from little endian to network byte order.

        /** @var array $hex */

        $hex = unpack(

            'H*',

            pack(

                'v',

                hexdec(bin2hex(substr($this->bytes, 6, 2)))

            )

        );

        return new Hexadecimal((string) ($hex[1] ?? ''));

    }

    public function getTimestamp(): Hexadecimal

    {

        return new Hexadecimal(sprintf(

            '%03x%04s%08s',

            hexdec($this->getTimeHiAndVersion()->toString()) & 0x0fff,

            $this->getTimeMid()->toString(),

            $this->getTimeLow()->toString()

        ));

    }

    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 getVersion(): ?int

    {

        if ($this->isNil() || $this->isMax()) {

            return null;

        }

        /** @var array $parts */

        $parts = unpack('n*', $this->bytes);

        return ((int) $parts[4] >> 4) & 0x00f;

    }

    private function isCorrectVariant(): bool

    {

        if ($this->isNil() || $this->isMax()) {

            return true;

        }

        $variant = $this->getVariant();

        return $variant === Uuid::RFC_4122 || $variant === Uuid::RESERVED_MICROSOFT;

    }

}