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1   package org.apache.maven.scm.provider.cvslib.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.ScmFileSet;
24  import org.apache.maven.scm.ScmVersion;
25  import org.apache.maven.scm.command.diff.AbstractDiffCommand;
26  import org.apache.maven.scm.command.diff.DiffScmResult;
27  import org.apache.maven.scm.provider.ScmProviderRepository;
28  import org.apache.maven.scm.provider.cvslib.command.CvsCommand;
29  import org.apache.maven.scm.provider.cvslib.command.CvsCommandUtils;
30  import org.apache.maven.scm.provider.cvslib.repository.CvsScmProviderRepository;
31  import org.codehaus.plexus.util.StringUtils;
32  import org.codehaus.plexus.util.cli.Commandline;
33  
34  /**
35   * @author <a href="mailto:brett@apache.org">Brett Porter</a>
36   *
37   */
38  public abstract class AbstractCvsDiffCommand
39      extends AbstractDiffCommand
40      implements CvsCommand
41  {
42      /** {@inheritDoc} */
43      protected DiffScmResult executeDiffCommand( ScmProviderRepository repo, ScmFileSet fileSet,
44                                                  ScmVersion startRevision, ScmVersion endRevision )
45          throws ScmException
46      {
47          CvsScmProviderRepository repository = (CvsScmProviderRepository) repo;
48  
49          Commandline cl = CvsCommandUtils.getBaseCommand( "diff", repository, fileSet );
50  
51          cl.createArg().setValue( "-u" );
52  
53          if ( isSupportNewFileParameter() )
54          {
55              cl.createArg().setValue( "-N" );
56          }
57  
58          if ( startRevision != null && StringUtils.isNotEmpty( startRevision.getName() ) )
59          {
60              cl.createArg().setValue( "-r" );
61              cl.createArg().setValue( startRevision.getName() );
62          }
63  
64          if ( endRevision != null && StringUtils.isNotEmpty( endRevision.getName() ) )
65          {
66              cl.createArg().setValue( "-r" );
67              cl.createArg().setValue( endRevision.getName() );
68          }
69  
70          if ( getLogger().isInfoEnabled() )
71          {
72              getLogger().info( "Executing: " + cl );
73              getLogger().info( "Working directory: " + cl.getWorkingDirectory().getAbsolutePath() );
74          }
75  
76          return executeCvsCommand( cl );
77      }
78  
79      protected abstract DiffScmResult executeCvsCommand( Commandline cl )
80          throws ScmException;
81  
82      protected boolean isSupportNewFileParameter()
83      {
84          return true;
85      }
86  }