gistfile1.as

package com.singuerinc.labs.utils.validators {
 /**
 * @author blog.singuerinc.com
 */
public class SpainPostalCodeValidator {

    public var stateNames:Array = ['Alava/Araba', 'Albacete', 'Alicante', 'Almería', 'Avila', 'Badajoz', 'Islas Baleares', 'Barcelona', 'Burgos', 'Cáceres', 'Cádiz', 'Castellón', 'Ciudad Real', 'Córdoba', 'A Coruña/La Coruña', 'Cuenca', 'Gerona/Girona', 'Granada', 'Guadalajara', 'Gipuzkoa/Guipuzcoa', 'Huelva', 'Huesca', 'Jaen', 'León', 'Lérida/Lleida', 'La Rioja', 'Lugo', 'Madrid', 'Málaga', 'Murcia', 'Navarra', 'Orense/Ourense', 'Asturias', 'Palencia', 'Las Palmas', 'Pontevedra', 'Salamanca', 'S.C.Tenerife', 'Cantabria', 'Segovia', 'Sevilla', 'Soria', 'Tarragona', 'Teruel', 'Toledo', 'Valencia', 'Valladolid', 'Bizkaia/Vizcaya', 'Zamora', 'Zaragoza', 'Ceuta', 'Melilla'];

    private var _stateName:String;
    private var _stateCode:String;
    private var _isValid:Boolean;

    public function SpainPostalCodeValidator(codeOrStateName:String) {
        if (isNaN(Number(codeOrStateName)) == true) {
            var result:String = search(codeOrStateName);
            if (result == '') {
                _isValid = false;
            } else {
                result += '000';
                _isValid = validate(result);
            }
        } else {
            _isValid = validate(codeOrStateName);
        }
    }

    public function get stateCode():String {
        return _stateCode;
    }

    public function get stateName():String {
        return _stateName;
    }

    public function isValid():Boolean {
        return _isValid;
    }

    private function validate(value:String):Boolean {

        var str:String = value.toString();
        if (str.length != 5) return false;

        var regExp:RegExp = /((?>^[5]{1})[0-2][0-9]{3})|((?>^[0]{1})[1-9]{1}[0-9]{3})|((?>^[1-4]{1})[0-9]{1}[0-9]{3})$/;
        var result:Boolean = regExp.test(str);
        if (result) {
            var codeInit:String = str.substr(0, 2);
            var idx:uint = Number(codeInit);
            _stateName = stateNames[idx - 1];
            _stateCode = codeInit;
        }

        return result;
    }

    private function search(stateName:String):String {

        stateName = stateName.toLowerCase();
        var state:int = -1;

        var l:uint = stateNames.length;
        for (var i:uint = 0; i < l; i++) {
            var s:String = stateNames[i];
            if (s.toLowerCase().search(stateName) != -1) {
                state = i;
                break;
            }
        }
        return state == -1 ? '' : ('0' + (state + 1)).substr(-2);
    }
}
}