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vendor/workerman/validation/library/Rules/Roman.php

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+<?php
+
+/*
+ * Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
+ * SPDX-License-Identifier: MIT
+ */
+
+declare(strict_types=1);
+
+namespace Respect\Validation\Rules;
+
+/**
+ * Validates if the input is a Roman numeral.
+ *
+ * @author Alexander Wühr <wuehr@sc-networks.com>
+ * @author Henrique Moody <henriquemoody@gmail.com>
+ * @author Jean Pimentel <jeanfap@gmail.com>
+ */
+final class Roman extends AbstractEnvelope
+{
+    public function __construct()
+    {
+        parent::__construct(new Regex('/^(?=[MDCLXVI])M*(C[MD]|D?C{0,3})(X[CL]|L?X{0,3})(I[XV]|V?I{0,3})$/'));
+    }
+}