package org.apache.maven.scm.provider.cvslib.cvsjava.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.BlameScmResult;

 import org.apache.maven.scm.provider.cvslib.command.blame.AbstractCvsBlameCommand;

 import org.apache.maven.scm.provider.cvslib.command.blame.CvsBlameConsumer;

 import org.apache.maven.scm.provider.cvslib.cvsjava.util.CvsConnection;

 import org.apache.maven.scm.provider.cvslib.cvsjava.util.CvsLogListener;

 import org.apache.maven.scm.provider.cvslib.repository.CvsScmProviderRepository;

 import org.codehaus.plexus.util.cli.Commandline;

 import java.io.BufferedReader;

 import java.io.ByteArrayInputStream;

 import java.io.InputStreamReader;

 /**

  * @author Evgeny Mandrikov

  * @since 1.4

  */

 public class CvsJavaBlameCommand

     extends AbstractCvsBlameCommand

 {

     /**

      * {@inheritDoc}

      */

     protected BlameScmResult executeCvsCommand( Commandline cl, CvsScmProviderRepository repository )

     {

         CvsLogListener logListener = new CvsLogListener();

         CvsBlameConsumer consumer = new CvsBlameConsumer( getLogger() );

         try

         {

             boolean isSuccess =

                 CvsConnection.processCommand( cl.getArguments(), cl.getWorkingDirectory().getAbsolutePath(),

                                               logListener, getLogger() );

             if ( !isSuccess )

             {

                 return new BlameScmResult( 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 )

         {

             getLogger().error( e );

             return new BlameScmResult( cl.toString(), "The cvs command failed.", logListener.getStdout().toString(),

                                        false );

         }

         return new BlameScmResult( cl.toString(), consumer.getLines() );

     }

 }