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.log.ScmLogger;
23 import org.apache.maven.scm.util.AbstractConsumer;
24 import org.codehaus.plexus.util.StringUtils;
25
26 import java.util.regex.Matcher;
27 import java.util.regex.Pattern;
28
29 /**
30 * @author <a href="mailto:struberg@yahoo.de">Mark Struberg</a>
31 *
32 */
33 public class GitLatestRevisionCommandConsumer
34 extends AbstractConsumer
35 {
36
37 /**
38 * The pattern used to match git log latest revision lines
39 */
40 private static final Pattern LATESTREV_PATTERN = Pattern.compile( "^commit \\s*(.*)" );
41
42 private String latestRevision;
43
44 public GitLatestRevisionCommandConsumer( ScmLogger logger )
45 {
46 super( logger );
47 }
48
49 /** {@inheritDoc} */
50 public void consumeLine( String line )
51 {
52 if ( getLogger().isDebugEnabled() )
53 {
54 getLogger().debug( "GitLatestRevisionCommandConsumer consumeLine : " + line );
55 }
56 if ( line == null || StringUtils.isEmpty( line ) )
57 {
58 return;
59 }
60
61 processGetLatestRevision( line );
62 }
63
64 public String getLatestRevision()
65 {
66 return latestRevision;
67 }
68
69 /**
70 * Process the current input line for the latest revision
71 *
72 * @param line A line of text from the git log output
73 */
74 private void processGetLatestRevision( String line )
75 {
76 Matcher matcher = LATESTREV_PATTERN.matcher( line );
77 if ( matcher.matches() )
78 {
79 latestRevision = matcher.group( 1 );
80
81 }
82 }
83
84 }