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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.maven.scm.provider.hg.command.diff;
20  
21  import org.apache.commons.lang3.StringUtils;
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  
33  /**
34   * @author <a href="mailto:thurner.rupert@ymono.net">thurner rupert</a>
35   */
36  public class HgDiffCommand extends AbstractDiffCommand implements Command {
37      /**
38       * {@inheritDoc}
39       */
40      protected DiffScmResult executeDiffCommand(
41              ScmProviderRepository repo, ScmFileSet fileSet, ScmVersion startRevision, ScmVersion endRevision)
42              throws ScmException {
43          String[] diffCmd;
44          if (startRevision != null && !StringUtils.isEmpty(startRevision.getName())) {
45              String revArg = startRevision.getName();
46              if (endRevision != null && !StringUtils.isEmpty(endRevision.getName())) {
47                  revArg += ".." + endRevision;
48              }
49              diffCmd = new String[] {HgCommandConstants.DIFF_CMD, HgCommandConstants.REVISION_OPTION, revArg};
50          } else {
51              diffCmd = new String[] {HgCommandConstants.DIFF_CMD};
52          }
53  
54          diffCmd = HgUtils.expandCommandLine(diffCmd, fileSet);
55          HgDiffConsumer consumer = new HgDiffConsumer(fileSet.getBasedir());
56  
57          ScmResult result = HgUtils.execute(consumer, fileSet.getBasedir(), diffCmd);
58  
59          return new DiffScmResult(consumer.getChangedFiles(), consumer.getDifferences(), consumer.getPatch(), result);
60      }
61  }