package org.apache.maven.scm.provider.cvslib.command.blame;

 /*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (the

  * "License"); you may not use this file except in compliance

  * with the License.  You may obtain a copy of the License at

  *

  * http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an

  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  * KIND, either express or implied.  See the License for the

  * specific language governing permissions and limitations

  * under the License.

  */

 import java.util.ArrayList;

 import java.util.Date;

 import java.util.List;

 import java.util.Locale;

 import org.apache.maven.scm.command.blame.BlameLine;

 import org.apache.maven.scm.log.ScmLogger;

 import org.apache.maven.scm.util.AbstractConsumer;

 import org.apache.regexp.RE;

 /**

  * @author Evgeny Mandrikov

  * @author Olivier Lamy

  * @since 1.4

  */

 public class CvsBlameConsumer

     extends AbstractConsumer

 {

     private static final String CVS_TIMESTAMP_PATTERN = "dd-MMM-yy";

     /* 1.1          (tor      24-Mar-03): */

     private static final String LINE_PATTERN = "(.*)\\((.*)\\s+(.*)\\)";

     /**

      * @see #LINE_PATTERN

      */

     private RE lineRegexp;

     private List<BlameLine> lines = new ArrayList<BlameLine>();

     public CvsBlameConsumer( ScmLogger logger )

     {

         super( logger );

         lineRegexp = new RE( LINE_PATTERN );

     }

     public void consumeLine( String line )

     {

         if (line != null && line.indexOf( ':' ) > 0 )

         {

             String annotation = line.substring( 0, line.indexOf( ':' ) );

             if ( lineRegexp.match( annotation ) )

             {

                 String revision = lineRegexp.getParen( 1 ).trim();

                 String author = lineRegexp.getParen( 2 ).trim();

                 String dateTimeStr = lineRegexp.getParen( 3 ).trim();

                 Date dateTime = parseDate( dateTimeStr, null, CVS_TIMESTAMP_PATTERN, Locale.US );

                 lines.add( new BlameLine( dateTime, revision, author ) );

                 if ( getLogger().isDebugEnabled() )

                 {

                     getLogger().debug( author + " " + dateTimeStr );

                 }

             }

         }

     }

     public List<BlameLine> getLines()

     {

         return lines;

     }

 }