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1   package org.apache.maven.model.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.model.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.Collection;
28  import java.util.List;
29  
30  /**
31   *
32   * @version $Id: PathTranslatingPostProcessor.java 958295 2010-06-26 23:16:18Z hboutemy $
33   */
34  class PathTranslatingPostProcessor
35      implements InterpolationPostProcessor
36  {
37  
38      private final Collection<String> unprefixedPathKeys;
39      private final File projectDir;
40      private final PathTranslator pathTranslator;
41      private final List<String> expressionPrefixes;
42  
43      public PathTranslatingPostProcessor( List<String> expressionPrefixes, Collection<String> unprefixedPathKeys,
44                                           File projectDir, PathTranslator pathTranslator )
45      {
46          this.expressionPrefixes = expressionPrefixes;
47          this.unprefixedPathKeys = unprefixedPathKeys;
48          this.projectDir = projectDir;
49          this.pathTranslator = pathTranslator;
50      }
51  
52      public Object execute( String expression, Object value )
53      {
54          if ( value != null )
55          {
56              expression = ValueSourceUtils.trimPrefix( expression, expressionPrefixes, true );
57  
58              if ( unprefixedPathKeys.contains( expression ) )
59              {
60                  return pathTranslator.alignToBaseDirectory( String.valueOf( value ), projectDir );
61              }
62          }
63  
64          return null;
65      }
66  
67  }