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ab3732f91f
SPDX IDs are shorter than licensing notes previously used, and adhere better to FOSS standards. It is also machine-readable.
26 lines
581 B
PHP
26 lines
581 B
PHP
<?php
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/*
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* Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
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* SPDX-License-Identifier: MIT
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*/
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declare(strict_types=1);
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namespace Respect\Validation\Rules;
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/**
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* Validates if the input is a Roman numeral.
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*
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* @author Alexander Wühr <wuehr@sc-networks.com>
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* @author Henrique Moody <henriquemoody@gmail.com>
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* @author Jean Pimentel <jeanfap@gmail.com>
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*/
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final class Roman extends AbstractEnvelope
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{
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public function __construct()
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{
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parent::__construct(new Regex('/^(?=[MDCLXVI])M*(C[MD]|D?C{0,3})(X[CL]|L?X{0,3})(I[XV]|V?I{0,3})$/'));
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}
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}
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