View Javadoc

1   package org.apache.maven.scm.provider.perforce.command.update;
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.log.ScmLogger;
24  import org.apache.maven.scm.util.AbstractConsumer;
25  import org.apache.regexp.RE;
26  import org.apache.regexp.RESyntaxException;
27  
28  /**
29   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
30   *
31   */
32  public class PerforceHaveConsumer
33      extends AbstractConsumer
34  {
35      private String have;
36  
37      /**
38       * The regular expression used to match header lines
39       */
40      private RE revisionRegexp;
41  
42      private static final String PATTERN = "^Change (\\d+) " + // changelist number
43          "on (.*) " + // date
44          "by (.*)@"; // author
45  
46      public PerforceHaveConsumer( ScmLogger logger )
47      {
48          super( logger );
49  
50          try
51          {
52              revisionRegexp = new RE( PATTERN );
53          }
54          catch ( RESyntaxException ignored )
55          {
56              if ( getLogger().isErrorEnabled() )
57              {
58                  getLogger().error( "Could not create regexp to parse perforce log file", ignored );
59              }
60          }
61      }
62  
63      public String getHave() throws ScmException
64      {
65          return have;
66      }
67  
68      // ----------------------------------------------------------------------
69      // StreamConsumer Implementation
70      // ----------------------------------------------------------------------
71  
72      /** {@inheritDoc} */
73      public void consumeLine( String line )
74      {
75          if( revisionRegexp.match( line ) )
76          {
77              have = revisionRegexp.getParen( 1 );
78          }
79      }
80  }