001package org.apache.maven.scm.provider.cvslib.command.blame;
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
022import java.util.ArrayList;
023import java.util.Date;
024import java.util.List;
025import java.util.Locale;
026
027import org.apache.maven.scm.command.blame.BlameLine;
028import org.apache.maven.scm.log.ScmLogger;
029import org.apache.maven.scm.util.AbstractConsumer;
030import org.apache.regexp.RE;
031
032/**
033 * @author Evgeny Mandrikov
034 * @author Olivier Lamy
035 * @since 1.4
036 */
037public class CvsBlameConsumer
038    extends AbstractConsumer
039{
040    private static final String CVS_TIMESTAMP_PATTERN = "dd-MMM-yy";
041
042    /* 1.1          (tor      24-Mar-03): */
043
044    private static final String LINE_PATTERN = "(.*)\\((.*)\\s+(.*)\\)";
045
046    /**
047     * @see #LINE_PATTERN
048     */
049    private RE lineRegexp;
050
051    private List<BlameLine> lines = new ArrayList<BlameLine>();
052
053    public CvsBlameConsumer( ScmLogger logger )
054    {
055        super( logger );
056
057        lineRegexp = new RE( LINE_PATTERN );
058    }
059
060    public void consumeLine( String line )
061    {
062        if (line != null && line.indexOf( ':' ) > 0 )
063        {
064            String annotation = line.substring( 0, line.indexOf( ':' ) );
065            if ( lineRegexp.match( annotation ) )
066            {
067                String revision = lineRegexp.getParen( 1 ).trim();
068                String author = lineRegexp.getParen( 2 ).trim();
069                String dateTimeStr = lineRegexp.getParen( 3 ).trim();
070
071                Date dateTime = parseDate( dateTimeStr, null, CVS_TIMESTAMP_PATTERN, Locale.US );
072                lines.add( new BlameLine( dateTime, revision, author ) );
073
074                if ( getLogger().isDebugEnabled() )
075                {
076                    getLogger().debug( author + " " + dateTimeStr );
077                }
078            }
079        }
080    }
081
082    public List<BlameLine> getLines()
083    {
084        return lines;
085    }
086
087}