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1   package org.apache.maven.project.interpolation;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import org.apache.maven.project.path.PathTranslator;
23  import org.codehaus.plexus.interpolation.InterpolationPostProcessor;
24  import org.codehaus.plexus.interpolation.util.ValueSourceUtils;
25  
26  import java.io.File;
27  import java.util.List;
28  
29  /**
30   * 
31   * @version $Id: PathTranslatingPostProcessor.java 767323 2009-04-21 22:53:31Z jdcasey $
32   */
33  public class PathTranslatingPostProcessor
34      implements InterpolationPostProcessor
35  {
36  
37      private final List<String> unprefixedPathKeys;
38      private final File projectDir;
39      private final PathTranslator pathTranslator;
40      private final List<String> expressionPrefixes;
41  
42      public PathTranslatingPostProcessor( List<String> expressionPrefixes, List<String> unprefixedPathKeys, File projectDir, PathTranslator pathTranslator )
43      {
44          this.expressionPrefixes = expressionPrefixes;
45          this.unprefixedPathKeys = unprefixedPathKeys;
46          this.projectDir = projectDir;
47          this.pathTranslator = pathTranslator;
48      }
49  
50      public Object execute( String expression,
51                                        Object value )
52      {
53          expression = ValueSourceUtils.trimPrefix( expression, expressionPrefixes, true );
54          
55          if ( projectDir != null && value != null && unprefixedPathKeys.contains( expression ) )
56          {
57              return pathTranslator.alignToBaseDirectory( String.valueOf( value ), projectDir );
58          }
59  
60          return value;
61      }
62  
63  }