001package ca.uhn.fhir.rest.server.interceptor.s13n.standardizers;
002
003/*-
004 * #%L
005 * HAPI FHIR - Server Framework
006 * %%
007 * Copyright (C) 2014 - 2022 Smile CDR, Inc.
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 *
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 *
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023/**
024 * Standardizes email addresses by removing whitespace, ISO control characters and applying lower-case to the values.
025 */
026public class EmailStandardizer implements IStandardizer {
027
028        @Override
029        public String standardize(String theString) {
030                StringBuilder buf = new StringBuilder();
031                for (int offset = 0; offset < theString.length(); ) {
032                        int codePoint = theString.codePointAt(offset);
033                        offset += Character.charCount(codePoint);
034
035                        if (Character.isISOControl(codePoint)) {
036                                continue;
037                        }
038
039                        if (!Character.isWhitespace(codePoint)) {
040                                buf.append(new String(Character.toChars(codePoint)).toLowerCase());
041                        }
042                }
043                return buf.toString();
044        }
045}