Create "TwSubdivisionCode" rule

library/Exceptions/SubdivisionCode/TwSubdivisionCodeException.php

@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of Respect/Validation.
+ *
+ * (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
+ *
+ * For the full copyright and license information, please view the "LICENSE.md"
+ * file that was distributed with this source code.
+ */
+
+namespace Respect\Validation\Exceptions\SubdivisionCode;
+
+use Respect\Validation\Exceptions\SubdivisionCodeException;
+
+/**
+ * Exception class for Taiwan subdivision code.
+ *
+ * ISO 3166-1 alpha-2: TW
+ */
+class TwSubdivisionCodeException extends SubdivisionCodeException
+{
+    public static $defaultTemplates = array(
+        self::MODE_DEFAULT => array(
+            self::STANDARD => '{{name}} must be a subdivision code of Taiwan',
+        ),
+        self::MODE_NEGATIVE => array(
+            self::STANDARD => '{{name}} must not be a subdivision code of Taiwan',
+        ),
+    );
+}

library/Rules/SubdivisionCode/TwSubdivisionCode.php

@@ -0,0 +1,50 @@
+<?php
+
+/*
+ * This file is part of Respect/Validation.
+ *
+ * (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
+ *
+ * For the full copyright and license information, please view the "LICENSE.md"
+ * file that was distributed with this source code.
+ */
+
+namespace Respect\Validation\Rules\SubdivisionCode;
+
+use Respect\Validation\Rules\AbstractSearcher;
+
+/**
+ * Validator for Taiwan subdivision code.
+ *
+ * ISO 3166-1 alpha-2: TW
+ *
+ * @link http://www.geonames.org/TW/administrative-division-taiwan.html
+ */
+class TwSubdivisionCode extends AbstractSearcher
+{
+    public $haystack = array(
+        'CHA', // Changhua
+        'CYI', // Chiayi
+        'CYQ', // Chiayi
+        'HSQ', // Hsinchu
+        'HSZ', // Hsinchu
+        'HUA', // Hualien
+        'ILA', // Ilan
+        'KEE', // Keelung
+        'KHH', // Kaohsiung
+        'MIA', // Miaoli
+        'NAN', // Nantou
+        'PEN', // Penghu
+        'PIF', // Pingtung
+        'TAO', // Taoyuan
+        'TNN', // Tainan
+        'TPE', // Taipei
+        'TPQ', // New Taipei
+        'TTT', // Taitung
+        'TXG', // Taichung
+        'YUN', // Yunlin
+        'TXQ', // Taichung County
+    );
+
+    public $compareIdentical = true;
+}