001 package org.apache.maven.scm.provider.perforce.command.changelog;
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 import java.util.ArrayList;
029 import java.util.List;
030
031 /**
032 * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
033 * @author Olivier Lamy
034 * @version $Id: PerforceChangesConsumer.java 1054408 2011-01-02 14:05:25Z olamy $
035 */
036 public class PerforceChangesConsumer
037 extends AbstractConsumer
038 {
039 private List<String> entries = new ArrayList<String>();
040
041 /**
042 * The regular expression used to match header lines
043 */
044 private RE revisionRegexp;
045
046 private static final String PATTERN = "^Change (\\d+) " + // changelist number
047 "on (.*) " + // date
048 "by (.*)@"; // author
049
050 public PerforceChangesConsumer( ScmLogger logger )
051 {
052 super( logger );
053
054 try
055 {
056 revisionRegexp = new RE( PATTERN );
057 }
058 catch ( RESyntaxException ignored )
059 {
060 if ( getLogger().isErrorEnabled() )
061 {
062 getLogger().error( "Could not create regexp to parse perforce log file", ignored );
063 }
064 }
065 }
066
067 public List<String> getChanges() throws ScmException
068 {
069 return entries;
070 }
071
072 // ----------------------------------------------------------------------
073 // StreamConsumer Implementation
074 // ----------------------------------------------------------------------
075
076 /** {@inheritDoc} */
077 public void consumeLine( String line )
078 {
079 if( revisionRegexp.match( line ) )
080 {
081 entries.add( revisionRegexp.getParen( 1 ) );
082 }
083 }
084 }