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1   package org.apache.maven.scm.provider.hg.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.ScmResult;
25  import org.apache.maven.scm.ScmVersion;
26  import org.apache.maven.scm.command.Command;
27  import org.apache.maven.scm.command.diff.AbstractDiffCommand;
28  import org.apache.maven.scm.command.diff.DiffScmResult;
29  import org.apache.maven.scm.provider.ScmProviderRepository;
30  import org.apache.maven.scm.provider.hg.HgUtils;
31  import org.apache.maven.scm.provider.hg.command.HgCommandConstants;
32  import org.codehaus.plexus.util.StringUtils;
33  
34  /**
35   * @author <a href="mailto:thurner.rupert@ymono.net">thurner rupert</a>
36   *
37   */
38  public class HgDiffCommand
39      extends AbstractDiffCommand
40      implements Command
41  {
42      /** {@inheritDoc} */
43      protected DiffScmResult executeDiffCommand( ScmProviderRepository repo, ScmFileSet fileSet,
44                                                  ScmVersion startRevision, ScmVersion endRevision )
45          throws ScmException
46      {
47          String[] diffCmd;
48          if ( startRevision != null && !StringUtils.isEmpty( startRevision.getName() ) )
49          {
50              String revArg = startRevision.getName();
51              if ( endRevision != null && !StringUtils.isEmpty( endRevision.getName() ) )
52              {
53                  revArg += ".." + endRevision;
54              }
55              diffCmd = new String[] { HgCommandConstants.DIFF_CMD, HgCommandConstants.REVISION_OPTION, revArg };
56          }
57          else
58          {
59              diffCmd = new String[] { HgCommandConstants.DIFF_CMD };
60          }
61  
62          diffCmd = HgUtils.expandCommandLine( diffCmd, fileSet );
63          HgDiffConsumer consumer = new HgDiffConsumer( getLogger(), fileSet.getBasedir() );
64  
65          ScmResult result = HgUtils.execute( consumer, getLogger(), fileSet.getBasedir(), diffCmd );
66  
67          return new DiffScmResult( consumer.getChangedFiles(), consumer.getDifferences(), consumer.getPatch(), result );
68      }
69  }