PhoneNumberService.java

/*
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations under
 * the License.
 *
 * The Original Code is OpenELIS code.
 *
 * Copyright (C) ITECH, University of Washington, Seattle WA.  All Rights Reserved.
 */

package us.mn.state.health.lims.common.services;

import us.mn.state.health.lims.common.util.ConfigurationProperties;
import us.mn.state.health.lims.common.util.validator.GenericValidator;

/**
 */
public class PhoneNumberService{
    private static final Object lock = new Object();
    private static String rawFormat = null;
    private static String regex = null;
    private static final String FORMAT_REGEX = "[a-zA-Z0-9\\+\\(\\)\\s-]+";

    public static String getPhoneFormat(){
        return ConfigurationProperties.getInstance().getPropertyValue( ConfigurationProperties.Property.PHONE_FORMAT );
    }

    /**
     * Validates a phone number according to the given format but allows for an arbitrary extension
     * @param number  to be validated
     * @return true if valid false otherwise
     */
    public boolean validatePhoneNumber( String number ){
        if( ConfigurationProperties.getInstance().isPropertyValueEqual( ConfigurationProperties.Property.VALIDATE_PHONE_FORMAT, "false" ) ||
            GenericValidator.isBlankOrNull( number )){
            return true;
        }

        if( !getPhoneFormat().equals( rawFormat ) ){
            synchronized( lock ){
                rawFormat = getPhoneFormat();
                buildRegEx();
            }
        }

        return number.matches( regex );
    }

    private void buildRegEx(){
        regex = rawFormat.replaceAll( "[a-z]", "\\\\d" )
                .replaceAll( " ", "\\\\s" )
                .replaceAll( "\\(", "\\\\(" )
                .replaceAll( "\\)", "\\\\)" )
                .replaceAll( "\\+", "\\\\+" ) + "(\\s+.*)?";
    }

    public static boolean validatePhoneFormat( String format){
        return format.matches( FORMAT_REGEX );
    }
}