1 package org.apache.maven.scm.provider.git.gitexe.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.util.AbstractConsumer;
23 import org.codehaus.plexus.util.StringUtils;
24
25 import java.util.regex.Matcher;
26 import java.util.regex.Pattern;
27
28 /**
29 * @author <a href="mailto:struberg@yahoo.de">Mark Struberg</a>
30 *
31 */
32 public class GitLatestRevisionCommandConsumer
33 extends AbstractConsumer
34 {
35
36 /**
37 * The pattern used to match git log latest revision lines
38 */
39 private static final Pattern LATESTREV_PATTERN = Pattern.compile( "^commit \\s*(.*)" );
40
41 private String latestRevision;
42
43 /** {@inheritDoc} */
44 public void consumeLine( String line )
45 {
46 if ( logger.isDebugEnabled() )
47 {
48 logger.debug( "GitLatestRevisionCommandConsumer consumeLine : " + line );
49 }
50 if ( line == null || StringUtils.isEmpty( line ) )
51 {
52 return;
53 }
54
55 processGetLatestRevision( line );
56 }
57
58 public String getLatestRevision()
59 {
60 return latestRevision;
61 }
62
63 /**
64 * Process the current input line for the latest revision
65 *
66 * @param line A line of text from the git log output
67 */
68 private void processGetLatestRevision( String line )
69 {
70 Matcher matcher = LATESTREV_PATTERN.matcher( line );
71 if ( matcher.matches() )
72 {
73 latestRevision = matcher.group( 1 );
74
75 }
76 }
77
78 }