package org.apache.maven.scm.provider.jazz.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.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.jazz.command.consumer.AbstractRepositoryConsumer;
  import org.apache.regexp.RE;
  import org.apache.regexp.RESyntaxException;
  
  import java.text.SimpleDateFormat;
  import java.util.ArrayList;
  import java.util.Date;
  import java.util.List;
  import java.util.TimeZone;
  
  //STATUS: NOT DONE
  
  /**
   * Consume the output of the scm command for the "blame" operation.
   *
   * @author <a href="mailto:ChrisGWarp@gmail.com">Chris Graham</a>
   */
  public class JazzBlameConsumer
      extends AbstractRepositoryConsumer
  {
      private static final String JAZZ_TIMESTAMP_PATTERN = "yyyy-MM-dd";
  
  //  1 Deb (1008) 2011-12-14                       Test.txt
  //  2 Deb (1005) 2011-12-14 59 My commit comment.
  
      private static final String LINE_PATTERN = "(\\d+) (.*) \\((\\d+)\\) (\\d+-\\d+-\\d+) (.*)";
  
      /**
       * @see #LINE_PATTERN
       */
      private RE lineRegexp;
  
      private List<BlameLine> fLines = new ArrayList<BlameLine>();
  
      private SimpleDateFormat dateFormat;
  
      /**
       * Construct the JazzBlameCommand consumer.
       *
       * @param repository The repository we are working with.
       * @param logger     The logger to use.
       */
      public JazzBlameConsumer( ScmProviderRepository repository, ScmLogger logger )
      {
          super( repository, logger );
  
          dateFormat = new SimpleDateFormat( JAZZ_TIMESTAMP_PATTERN );
          dateFormat.setTimeZone( TimeZone.getTimeZone( "UTC" ) );
  
          try
          {
              lineRegexp = new RE( LINE_PATTERN );
          }
          catch ( RESyntaxException ex )
          {
              throw new RuntimeException(
                  "INTERNAL ERROR: Could not create regexp to parse jazz scm blame output. This shouldn't happen. Something is probably wrong with the oro installation.",
                  ex );
          }
      }
  
      /**
       * Process one line of output from the execution of the "scm annotate" command.
       *
       * @param line The line of output from the external command that has been pumped to us.
       * @see org.codehaus.plexus.util.cli.StreamConsumer#consumeLine(java.lang.String)
       */
      public void consumeLine( String line )
      {
          super.consumeLine( line );
  
          if ( lineRegexp.match( line ) )
          {
              String lineNumberStr = lineRegexp.getParen( 1 );
              String owner = lineRegexp.getParen( 2 );
             String changeSetNumberStr = lineRegexp.getParen( 3 );
             String dateStr = lineRegexp.getParen( 4 );
             Date date = parseDate( dateStr, JAZZ_TIMESTAMP_PATTERN, null );
             fLines.add( new BlameLine( date, changeSetNumberStr, owner ) );
         }
     }
 
     public List<BlameLine> getLines()
     {
         return fLines;
     }
 }