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 }