f6fac6c4bc
Fix bin/publish: use correct .env path for rspade_system Fix bin/publish script: prevent grep exit code 1 from terminating script 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
94 lines
3.0 KiB
PHP
Executable File
94 lines
3.0 KiB
PHP
Executable File
<?php
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/**
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* This file is part of the ramsey/uuid library
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*
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* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
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* @license http://opensource.org/licenses/MIT MIT
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*/
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declare(strict_types=1);
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namespace Ramsey\Uuid\Rfc4122;
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use Ramsey\Uuid\Exception\InvalidBytesException;
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use Ramsey\Uuid\Uuid;
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use function decbin;
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use function str_pad;
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use function str_starts_with;
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use function strlen;
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use function substr;
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use function unpack;
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use const STR_PAD_LEFT;
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/**
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* Provides common functionality for handling the variant, as defined by RFC 9562 (formerly RFC 4122)
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*
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* @immutable
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*/
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trait VariantTrait
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{
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/**
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* Returns the bytes that comprise the fields
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*/
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abstract public function getBytes(): string;
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/**
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* Returns the variant
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*
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* The variant number describes the layout of the UUID. The variant number has the following meaning:
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*
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* - 0 - Reserved for NCS backward compatibility
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* - 2 - The RFC 9562 (formerly RFC 4122) variant
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* - 6 - Reserved, Microsoft Corporation backward compatibility
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* - 7 - Reserved for future definition
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*
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* For RFC 9562 (formerly RFC 4122) variant UUIDs, this value should always be the integer `2`.
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*
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* @link https://www.rfc-editor.org/rfc/rfc9562#section-4.1 RFC 9562, 4.1. Variant Field
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*/
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public function getVariant(): int
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{
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if (strlen($this->getBytes()) !== 16) {
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throw new InvalidBytesException('Invalid number of bytes');
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}
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// According to RFC 9562, sections {@link https://www.rfc-editor.org/rfc/rfc9562#section-4.1 4.1} and
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// {@link https://www.rfc-editor.org/rfc/rfc9562#section-5.10 5.10}, the Max UUID falls within the range
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// of the future variant.
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if ($this->isMax()) {
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return Uuid::RESERVED_FUTURE;
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}
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// According to RFC 9562, sections {@link https://www.rfc-editor.org/rfc/rfc9562#section-4.1 4.1} and
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// {@link https://www.rfc-editor.org/rfc/rfc9562#section-5.9 5.9}, the Nil UUID falls within the range
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// of the Apollo NCS variant.
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if ($this->isNil()) {
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return Uuid::RESERVED_NCS;
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}
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/** @var int[] $parts */
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$parts = unpack('n*', $this->getBytes());
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// $parts[5] is a 16-bit, unsigned integer containing the variant bits of the UUID. We convert this integer into
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// a string containing a binary representation, padded to 16 characters. We analyze the first three characters
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// (three most-significant bits) to determine the variant.
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$msb = substr(str_pad(decbin($parts[5]), 16, '0', STR_PAD_LEFT), 0, 3);
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if ($msb === '111') {
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return Uuid::RESERVED_FUTURE;
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} elseif ($msb === '110') {
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return Uuid::RESERVED_MICROSOFT;
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} elseif (str_starts_with($msb, '10')) {
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return Uuid::RFC_4122;
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}
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return Uuid::RESERVED_NCS;
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}
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}
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