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1   package org.apache.maven.scm.provider.cvslib.cvsjava.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.apache.maven.scm.provider.cvslib.cvsjava.util.CvsConnection;
27  import org.apache.maven.scm.provider.cvslib.cvsjava.util.CvsLogListener;
28  import org.codehaus.plexus.util.cli.Commandline;
29  
30  import java.io.BufferedReader;
31  import java.io.ByteArrayInputStream;
32  import java.io.InputStreamReader;
33  
34  /**
35   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
36   *
37   */
38  public class CvsJavaDiffCommand
39      extends AbstractCvsDiffCommand
40  {
41      /** {@inheritDoc} */
42      protected DiffScmResult executeCvsCommand( Commandline cl )
43          throws ScmException
44      {
45          CvsLogListener logListener = new CvsLogListener();
46  
47          CvsDiffConsumer consumer = new CvsDiffConsumer( getLogger(), cl.getWorkingDirectory() );
48  
49          try
50          {
51              boolean isSuccess = CvsConnection.processCommand( cl.getArguments(),
52                                                                cl.getWorkingDirectory().getAbsolutePath(), logListener,
53                                                                getLogger() );
54  
55              if ( !isSuccess )
56              {
57                  return new DiffScmResult( cl.toString(), "The cvs command failed.", logListener.getStderr().toString(),
58                                            false );
59              }
60              BufferedReader stream = new BufferedReader(
61                  new InputStreamReader( new ByteArrayInputStream( logListener.getStdout().toString().getBytes() ) ) );
62  
63              String line;
64  
65              while ( ( line = stream.readLine() ) != null )
66              {
67                  consumer.consumeLine( line );
68              }
69          }
70          catch ( Exception e )
71          {
72              e.printStackTrace();
73              return new DiffScmResult( cl.toString(), "The cvs command failed.", logListener.getStdout().toString(),
74                                        false );
75          }
76  
77          return new DiffScmResult( cl.toString(), consumer.getChangedFiles(), consumer.getDifferences(),
78                                    consumer.getPatch() );
79      }
80  
81      protected boolean isSupportNewFileParameter()
82      {
83          return false;
84      }
85  }