1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.model.path;
20
21 import javax.inject.Named;
22 import javax.inject.Singleton;
23
24 /**
25 * Normalizes a URL.
26 *
27 */
28 @Named
29 @Singleton
30 public class DefaultUrlNormalizer implements UrlNormalizer {
31
32 @Override
33 public String normalize(String url) {
34 String result = url;
35
36 if (result != null) {
37 while (true) {
38 int idx = result.indexOf("/../");
39 if (idx < 0) {
40 break;
41 } else if (idx == 0) {
42 result = result.substring(3);
43 continue;
44 }
45 int parent = idx - 1;
46 while (parent >= 0 && result.charAt(parent) == '/') {
47 parent--;
48 }
49 parent = result.lastIndexOf('/', parent);
50 if (parent < 0) {
51 result = result.substring(idx + 4);
52 } else {
53 result = result.substring(0, parent) + result.substring(idx + 3);
54 }
55 }
56 }
57
58 return result;
59 }
60 }