85 lines
2.1 KiB
PHP
85 lines
2.1 KiB
PHP
<?php
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/*
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* This file is part of Respect/Validation.
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*
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* (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
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*
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* For the full copyright and license information, please view the LICENSE file
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* that was distributed with this source code.
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*/
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declare(strict_types=1);
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namespace Respect\Validation\Rules;
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use Respect\Validation\Exceptions\ComponentException;
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use function is_string;
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use function preg_match;
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use function sprintf;
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/**
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* Validates whether the input is a valid UUID.
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*
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* It also supports validation of specific versions 1, 3, 4 and 5.
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*
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* @author Dick van der Heiden <d.vanderheiden@inthere.nl>
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* @author Henrique Moody <henriquemoody@gmail.com>
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* @author Michael Weimann <mail@michael-weimann.eu>
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*/
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final class Uuid extends AbstractRule
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{
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/**
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* Placeholder in "sprintf()" format used to create the REGEX that validates inputs.
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*/
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private const PATTERN_FORMAT = '/^[0-9a-f]{8}-[0-9a-f]{4}-%s[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i';
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/**
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* The UUID version to validate for.
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*
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* @var int|null
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*/
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private $version;
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/**
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* Initializes the rule with the desired version.
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*
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* @throws ComponentException when the version is not valid
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*/
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public function __construct(?int $version = null)
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{
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if ($version !== null && !$this->isSupportedVersion($version)) {
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throw new ComponentException(sprintf('Only versions 1, 3, 4, and 5 are supported: %d given', $version));
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}
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$this->version = $version;
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}
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/**
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* {@inheritDoc}
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*/
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public function validate($input): bool
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{
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if (!is_string($input)) {
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return false;
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}
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return preg_match($this->getPattern(), $input) > 0;
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}
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private function isSupportedVersion(int $version): bool
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{
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return $version >= 1 && $version <= 5 && $version !== 2;
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}
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private function getPattern(): string
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{
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if ($this->version !== null) {
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return sprintf(self::PATTERN_FORMAT, $this->version);
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}
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return sprintf(self::PATTERN_FORMAT, '[13-5]');
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}
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}
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