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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.interpolation;
20  
21  import java.util.HashSet;
22  import java.util.Set;
23  
24  import org.apache.maven.model.path.UrlNormalizer;
25  import org.codehaus.plexus.interpolation.InterpolationPostProcessor;
26  
27  /**
28   * Ensures that expressions referring to URLs evaluate to normalized URLs.
29   *
30   */
31  class UrlNormalizingPostProcessor implements InterpolationPostProcessor {
32  
33      private static final Set<String> URL_EXPRESSIONS;
34  
35      static {
36          Set<String> expressions = new HashSet<>();
37          expressions.add("project.url");
38          expressions.add("project.scm.url");
39          expressions.add("project.scm.connection");
40          expressions.add("project.scm.developerConnection");
41          expressions.add("project.distributionManagement.site.url");
42  
43          URL_EXPRESSIONS = expressions;
44      }
45  
46      private UrlNormalizer normalizer;
47  
48      UrlNormalizingPostProcessor(UrlNormalizer normalizer) {
49          this.normalizer = normalizer;
50      }
51  
52      @Override
53      public Object execute(String expression, Object value) {
54          if (value != null && URL_EXPRESSIONS.contains(expression)) {
55              return normalizer.normalize(value.toString());
56          }
57  
58          return null;
59      }
60  }