001/*
002 * Licensed to DuraSpace under one or more contributor license agreements.
003 * See the NOTICE file distributed with this work for additional information
004 * regarding copyright ownership.
005 *
006 * DuraSpace licenses this file to you under the Apache License,
007 * Version 2.0 (the "License"); you may not use this file except in
008 * compliance with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.fcrepo.kernel.modeshape.identifiers;
019
020import org.fcrepo.kernel.api.identifiers.InternalIdentifierConverter;
021
022/**
023 * @author cabeer
024 * @since 10/9/14
025 */
026public class HashConverter extends InternalIdentifierConverter {
027
028    @Override
029    protected String doForward(final String externalId) {
030        final int i = externalId.indexOf('#');
031        if (i >= 0) {
032            return externalId.substring(0, i) + "/#/" + externalId.substring(i + 1).replace("/", "%2F");
033        }
034        return externalId;
035    }
036
037    @Override
038    protected String doBackward(final String internalId) {
039
040        final int i = internalId.indexOf("/#/");
041
042        if (i >= 0) {
043            return internalId.substring(0, i) + "#" + internalId.substring(i + 3).replace("%2F", "/");
044        }
045        return internalId;
046    }
047}