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    1   package org.apache.maven.artifact.ant;
    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 java.io.File;
   23   import java.util.Arrays;
   24   import java.util.Comparator;
   25   import java.util.Iterator;
   26   import java.util.List;
   27   
   28   import org.apache.tools.ant.util.FileNameMapper;
   29   import org.codehaus.plexus.util.StringUtils;
   30   
   31   /**
   32    * Ant filename mapper to remove version info from filename when copying dependencies.
   33    *
   34    * @author <a href="mailto:hboutemy@apache.org">Herve Boutemy</a>
   35    * @version $Id: VersionMapper.java 649782 2008-04-19 09:42:38Z hboutemy $
   36    */
   37   public class VersionMapper implements FileNameMapper, Comparator
   38   {
   39       private List versions;
   40   
   41       private String to;
   42   
   43       public String[] mapFileName( String sourceFileName )
   44       {
   45           String originalFileName = new java.io.File( sourceFileName ).getName();
   46           for ( Iterator iter = versions.iterator(); iter.hasNext(); )
   47           {
   48               String version = (String) iter.next();
   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        */
   70       public void setFrom( String from )
   71       {
   72           String[] split = StringUtils.split( from, File.pathSeparator );
   73           // sort, from lengthiest to smallest
   74           Arrays.sort( split, this );
   75           versions = Arrays.asList( split );
   76       }
   77   
   78       /**
   79        * By default, only filename is changed, but if this attribute is set to <code>flatten</code>, directory is
   80        * removed.
   81        */
   82       public void setTo( String to )
   83       {
   84           this.to = to;
   85       }
   86   
   87       public int compare( Object o1, Object o2 )
   88       {
   89           String s1 = (String) o1;
   90           String s2 = (String) o2;
   91           int lengthDiff = s2.length() - s1.length();
   92           return ( lengthDiff != 0 ) ? lengthDiff : s1.compareTo( s2 );
   93       }
   94   }

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