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1   package org.apache.maven.scm.provider.accurev.cli;
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.Collection;
24  import java.util.regex.Matcher;
25  import java.util.regex.Pattern;
26  
27  import org.codehaus.plexus.util.cli.StreamConsumer;
28  
29  public class StatBackingConsumer
30      implements StreamConsumer
31  {
32  
33      private static final Pattern STAT_PATTERN = Pattern.compile( "\\s*(\\S+)\\s+.*\\(([^()]+)\\)\\s*" );
34  
35      private static final String NO_SUCH_ELEM = "no such elem";
36  
37      private Collection<File> memberElements;
38  
39      private Collection<File> nonMemberElements;
40  
41      public StatBackingConsumer( Collection<File> memberElements, Collection<File> nonMemberElements )
42      {
43          this.memberElements = memberElements;
44          this.nonMemberElements = nonMemberElements;
45      }
46  
47      public void consumeLine( String line )
48      {
49          // first group is the fileName
50          // second group is the indicator expected "backed","stale","overlap","underlap","no such elem";
51          Pattern pattern = STAT_PATTERN;
52          Matcher matcher = pattern.matcher( line );
53          if ( matcher.matches() )
54          {
55              File file = new File( matcher.group( 1 ) );
56              String indicator = matcher.group( 2 );
57              if ( NO_SUCH_ELEM.equals( indicator ) )
58              {
59                  nonMemberElements.add( file );
60              }
61              else
62              {
63                  memberElements.add( file );
64              }
65          }
66  
67      }
68  
69  }