package org.apache.maven.scm.provider.cvslib.cvsjava.command.changelog;
   
   /*
    * 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.ScmException;
  import org.apache.maven.scm.ScmVersion;
  import org.apache.maven.scm.command.changelog.ChangeLogScmResult;
  import org.apache.maven.scm.command.changelog.ChangeLogSet;
  import org.apache.maven.scm.provider.cvslib.command.changelog.AbstractCvsChangeLogCommand;
  import org.apache.maven.scm.provider.cvslib.command.changelog.CvsChangeLogConsumer;
  import org.apache.maven.scm.provider.cvslib.cvsjava.util.CvsConnection;
  import org.apache.maven.scm.provider.cvslib.cvsjava.util.CvsLogListener;
  import org.codehaus.plexus.util.cli.Commandline;
  
  import java.io.BufferedReader;
  import java.io.ByteArrayInputStream;
  import java.io.InputStreamReader;
  import java.util.Date;
  
  /**
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   *
   */
  public class CvsJavaChangeLogCommand
      extends AbstractCvsChangeLogCommand
  {
      /** {@inheritDoc} */
      protected ChangeLogScmResult executeCvsCommand( Commandline cl, Date startDate, Date endDate,
                                                      ScmVersion startVersion, ScmVersion endVersion, String datePattern )
          throws ScmException
      {
          CvsLogListener logListener = new CvsLogListener();
  
          CvsChangeLogConsumer consumer = new CvsChangeLogConsumer( getLogger(), datePattern );
  
          try
          {
              boolean isSuccess = CvsConnection.processCommand( cl.getArguments(),
                                                                cl.getWorkingDirectory().getAbsolutePath(), logListener,
                                                                getLogger() );
  
              if ( !isSuccess )
              {
                  return new ChangeLogScmResult( cl.toString(), "The cvs command failed.",
                                                 logListener.getStderr().toString(), false );
              }
              BufferedReader stream = new BufferedReader(
                  new InputStreamReader( new ByteArrayInputStream( logListener.getStdout().toString().getBytes() ) ) );
  
              String line;
  
              while ( ( line = stream.readLine() ) != null )
              {
                  consumer.consumeLine( line );
              }
          }
          catch ( Exception e )
          {
              e.printStackTrace();
              return new ChangeLogScmResult( cl.toString(), "The cvs command failed.", logListener.getStdout().toString(),
                                             false );
          }
  
          ChangeLogSet changeLogSet = new ChangeLogSet( consumer.getModifications(), startDate, endDate );
          changeLogSet.setStartVersion( startVersion );
          changeLogSet.setEndVersion( endVersion );
  
          return new ChangeLogScmResult( cl.toString(), changeLogSet );
      }
  
      protected void addDateRangeParameter( Commandline cl, String dateRange )
      {
          cl.createArg().setValue( dateRange );
      }
  }