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1   package org.apache.maven.scm.provider.git.gitexe.command.remove;
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.scm.ScmFile;
23  import org.apache.maven.scm.ScmFileStatus;
24  import org.apache.maven.scm.log.ScmLogger;
25  import org.apache.regexp.RE;
26  import org.apache.regexp.RESyntaxException;
27  import org.codehaus.plexus.util.cli.StreamConsumer;
28  
29  import java.util.ArrayList;
30  import java.util.List;
31  
32  /**
33   * @author <a href="mailto:struberg@yahoo.de">Mark Struberg</a>
34   * @author Olivier Lamy
35   *
36   */
37  public class GitRemoveConsumer
38      implements StreamConsumer
39  {
40      /**
41       * The pattern used to match deleted file lines
42       */
43      private static final String REMOVED_PATTERN = "^rm\\s'(.*)'";
44  
45      private ScmLogger logger;
46  
47      private List<ScmFile> removedFiles = new ArrayList<ScmFile>();
48  
49      /**
50       * @see #REMOVED_PATTERN
51       */
52      private RE removedRegexp;
53  
54      // ----------------------------------------------------------------------
55      //
56      // ----------------------------------------------------------------------
57  
58      public GitRemoveConsumer( ScmLogger logger )
59      {
60          this.logger = logger;
61          try
62          {
63              removedRegexp = new RE( REMOVED_PATTERN );
64          }
65          catch ( RESyntaxException ex )
66          {
67              throw new RuntimeException(
68                  "INTERNAL ERROR: Could not create regexp to parse git log file. This shouldn't happen. Something is probably wrong with the oro installation.",
69                  ex );
70          }
71      }
72  
73      // ----------------------------------------------------------------------
74      // StreamConsumer Implementation
75      // ----------------------------------------------------------------------
76  
77      /**
78       * {@inheritDoc}
79       */
80      public void consumeLine( String line )
81      {
82          if ( line.length() <= 2 )
83          {
84              return;
85          }
86  
87          if ( removedRegexp.match( line ) )
88          {
89              String file = removedRegexp.getParen( 1 );
90              removedFiles.add( new ScmFile( file, ScmFileStatus.DELETED ) );
91          }
92          else
93          {
94              if ( logger.isInfoEnabled() )
95              {
96                  logger.info( "could not parse line: " + line );
97              }
98  
99              return;
100         }
101     }
102 
103     public List<ScmFile> getRemovedFiles()
104     {
105         return removedFiles;
106     }
107 
108 }