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1   package org.apache.maven.shared.utils.io;
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.ArrayList;
24  import java.util.List;
25  
26  public class WalkCollector
27      implements DirectoryWalkListener
28  {
29      final List<File> steps;
30  
31      File startingDir;
32  
33      int startCount;
34  
35      int finishCount;
36  
37      int percentageLow;
38  
39      int percentageHigh;
40  
41      public WalkCollector()
42      {
43          steps = new ArrayList<File>();
44          startCount = 0;
45          finishCount = 0;
46          percentageLow = 0;
47          percentageHigh = 0;
48      }
49  
50      public void debug( String message )
51      {
52          // can be used to set some message
53      }
54  
55      public void directoryWalkStarting( File basedir )
56      {
57          startingDir = basedir;
58          startCount++;
59      }
60  
61      public void directoryWalkStep( int percentage, File file )
62      {
63          steps.add( file );
64          percentageLow = Math.min( percentageLow, percentage );
65          percentageHigh = Math.max( percentageHigh, percentage );
66      }
67  
68      public void directoryWalkFinished()
69      {
70          finishCount++;
71      }
72  }