001 package org.apache.maven.scm.provider.perforce.command.update;
002
003 /*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements. See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership. The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License. You may obtain a copy of the License at
011 *
012 * http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied. See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022 import org.apache.maven.scm.ScmException;
023 import org.apache.maven.scm.log.ScmLogger;
024 import org.apache.maven.scm.util.AbstractConsumer;
025 import org.apache.regexp.RE;
026 import org.apache.regexp.RESyntaxException;
027
028 /**
029 * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
030 * @version $Id: PerforceHaveConsumer.java 1057019 2011-01-09 20:13:07Z olamy $
031 */
032 public class PerforceHaveConsumer
033 extends AbstractConsumer
034 {
035 private String have;
036
037 /**
038 * The regular expression used to match header lines
039 */
040 private RE revisionRegexp;
041
042 private static final String PATTERN = "^Change (\\d+) " + // changelist number
043 "on (.*) " + // date
044 "by (.*)@"; // author
045
046 public PerforceHaveConsumer( ScmLogger logger )
047 {
048 super( logger );
049
050 try
051 {
052 revisionRegexp = new RE( PATTERN );
053 }
054 catch ( RESyntaxException ignored )
055 {
056 if ( getLogger().isErrorEnabled() )
057 {
058 getLogger().error( "Could not create regexp to parse perforce log file", ignored );
059 }
060 }
061 }
062
063 public String getHave() throws ScmException
064 {
065 return have;
066 }
067
068 // ----------------------------------------------------------------------
069 // StreamConsumer Implementation
070 // ----------------------------------------------------------------------
071
072 /** {@inheritDoc} */
073 public void consumeLine( String line )
074 {
075 if( revisionRegexp.match( line ) )
076 {
077 have = revisionRegexp.getParen( 1 );
078 }
079 }
080 }