package org.apache.maven.scm.provider.tfs.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 org.apache.maven.scm.command.blame.BlameLine;
  import org.apache.maven.scm.log.ScmLogger;
  import org.apache.maven.scm.util.AbstractConsumer;
  
  import java.util.ArrayList;
  import java.util.Date;
  import java.util.List;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  /**
   * @author Evgeny Mandrikov
   * @since 1.4
   */
  public class TfsBlameConsumer
      extends AbstractConsumer
  {
      private static final String TFS_TIMESTAMP_PATTERN = "MM/dd/yyyy";
  
      /* 3 username 3/13/2006 line */
      // TODO simplify
  
      private static final Pattern LINE_PATTERN = Pattern.compile( "([^ ]+)[ ]+([^ ]+)[ ]+([^ ]+)" );
  
      private List<BlameLine> lines = new ArrayList<BlameLine>();
  
      public TfsBlameConsumer( ScmLogger logger )
      {
          super( logger );
      }
  
      public void consumeLine( String line )
      {
          Matcher matcher = LINE_PATTERN.matcher( line );
          if ( matcher.find() )
          {
              String revision = matcher.group( 1 ).trim();
              String author = matcher.group( 2 ).trim();
              String dateStr = matcher.group( 3 ).trim();
  
              Date date = parseDate( dateStr, null, TFS_TIMESTAMP_PATTERN );
  
              lines.add( new BlameLine( date, revision, author ) );
          }
      }
  
      public List<BlameLine> getLines()
      {
          return lines;
      }
  }