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1   package org.apache.maven.scm.provider.cvslib.cvsexe.command.diff;
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.ScmException;
23  import org.apache.maven.scm.command.diff.DiffScmResult;
24  import org.apache.maven.scm.provider.cvslib.command.diff.AbstractCvsDiffCommand;
25  import org.apache.maven.scm.provider.cvslib.command.diff.CvsDiffConsumer;
26  import org.codehaus.plexus.util.cli.CommandLineException;
27  import org.codehaus.plexus.util.cli.CommandLineUtils;
28  import org.codehaus.plexus.util.cli.Commandline;
29  
30  /**
31   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
32   *
33   */
34  public class CvsExeDiffCommand
35      extends AbstractCvsDiffCommand
36  {
37      /** {@inheritDoc} */
38      protected DiffScmResult executeCvsCommand( Commandline cl )
39          throws ScmException
40      {
41          CvsDiffConsumer consumer = new CvsDiffConsumer( getLogger(), cl.getWorkingDirectory() );
42  
43          CommandLineUtils.StringStreamConsumer stderr = new CommandLineUtils.StringStreamConsumer();
44  
45  
46          try
47          {
48              CommandLineUtils.executeCommandLine( cl, consumer, stderr );
49          }
50          catch ( CommandLineException ex )
51          {
52              throw new ScmException( "Error while executing command.", ex );
53          }
54  
55  // TODO: a difference returns a code of "1", as does errors. How to tell the difference?
56  //        if ( exitCode != 0 )
57  //        {
58  //            return new DiffScmResult( cl.toString(), "The cvs command failed.", stderr.getOutput(), false );
59  //        }
60  
61          return new DiffScmResult( cl.toString(), consumer.getChangedFiles(), consumer.getDifferences(),
62                                    consumer.getPatch() );
63  
64      }
65  }