001package ca.uhn.fhir.util;
002
003/*
004 * #%L
005 * HAPI FHIR - Core Library
006 * %%
007 * Copyright (C) 2014 - 2021 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
023import java.util.StringTokenizer;
024
025public class UrlPathTokenizer {
026
027        private final StringTokenizer myTok;
028
029        public UrlPathTokenizer(String theRequestPath) {
030                myTok = new StringTokenizer(theRequestPath, "/");
031        }
032
033        public boolean hasMoreTokens() {
034                return myTok.hasMoreTokens();
035        }
036
037        /**
038         * Returns the next portion. Any URL-encoding is undone, but we will
039         * HTML encode the < and " marks since they are both
040         * not useful un URL paths in FHIR and potentially represent injection
041         * attacks.
042         *
043         * @see UrlUtil#sanitizeUrlPart(String)
044         * @see UrlUtil#unescape(String)
045         */
046        public String nextTokenUnescapedAndSanitized() {
047                return UrlUtil.sanitizeUrlPart(UrlUtil.unescape(myTok.nextToken()));
048        }
049
050}