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1   package org.apache.maven.ant.tasks.support;
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.tools.ant.util.FileNameMapper;
23  import org.codehaus.plexus.util.StringUtils;
24  
25  import java.io.File;
26  import java.util.Arrays;
27  import java.util.Comparator;
28  import java.util.List;
29  
30  /**
31   * Ant filename mapper to remove version info from filename when copying dependencies.
32   *
33   * @author <a href="mailto:hboutemy@apache.org">Herve Boutemy</a>
34   */
35  public class VersionMapper
36      implements FileNameMapper, Comparator<String>
37  {
38      private List<String> versions;
39  
40      private String to;
41  
42      /** {@inheritDoc} */
43      @Override
44      public String[] mapFileName( String sourceFileName )
45      {
46          String originalFileName = new File( sourceFileName ).getName();
47          for ( String version : versions )
48          {
49              int index = originalFileName.indexOf( version );
50              if ( index >= 0 )
51              {
52                  // remove version in artifactId-version(-classifier).type
53                  String baseFilename = originalFileName.substring( 0, index - 1 );
54                  String extension = originalFileName.substring( index + version.length() );
55                  String path = sourceFileName.substring( 0, sourceFileName.length() - originalFileName.length() );
56                  if ( "flatten".equals( to ) )
57                  {
58                      path = "";
59                  }
60                  return new String[]{ path + baseFilename + extension };
61              }
62          }
63          return new String[]{ sourceFileName };
64      }
65  
66      /**
67       * Set the versions identifiers that this mapper can remove from filenames. The separator value used is path
68       * separator, as used by dependencies task when setting <code>versionsId</code> property value.
69       * @param from The string from which we set.
70       */
71      @Override
72      public void setFrom( String from )
73      {
74          String[] split = StringUtils.split( from, File.pathSeparator );
75          // sort, from lengthiest to smallest
76          Arrays.sort( split, this );
77          versions = Arrays.asList( split );
78      }
79  
80      /**
81       * By default, only filename is changed, but if this attribute is set to <code>flatten</code>, directory is removed.
82       * @param to {@link #to}
83       */
84      @Override
85      public void setTo( String to )
86      {
87          this.to = to;
88      }
89  
90      /** {@inheritDoc} */
91      @Override
92      public int compare( String s1, String s2 )
93      {
94          int lengthDiff = s2.length() - s1.length();
95          return ( lengthDiff != 0 ) ? lengthDiff : s1.compareTo( s2 );
96      }
97  }