001/*-
002 * #%L
003 * HAPI FHIR - Server Framework
004 * %%
005 * Copyright (C) 2014 - 2024 Smile CDR, Inc.
006 * %%
007 * Licensed under the Apache License, Version 2.0 (the "License");
008 * you may not use this file except in compliance with the License.
009 * You may obtain a copy of the License at
010 *
011 *      http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 * #L%
019 */
020package ca.uhn.fhir.rest.server.interceptor.s13n.standardizers;
021
022/**
023 * Standardizes phone numbers to fit 123-456-7890 pattern.
024 */
025public class PhoneStandardizer implements IStandardizer {
026
027        public static final String PHONE_NUMBER_PATTERN = "(\\d{3})(\\d{3})(\\d+)";
028        public static final String PHONE_NUMBER_REPLACE_PATTERN = "$1-$2-$3";
029
030        @Override
031        public String standardize(String thePhone) {
032                StringBuilder buf = new StringBuilder(thePhone.length());
033                for (char ch : thePhone.toCharArray()) {
034                        if (Character.isDigit(ch)) {
035                                buf.append(ch);
036                        }
037                }
038                return buf.toString().replaceFirst(PHONE_NUMBER_PATTERN, PHONE_NUMBER_REPLACE_PATTERN);
039        }
040}