package org.apache.maven.plugin.invoker;

 /*

  * 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.plugin.logging.Log;

 import org.apache.maven.shared.invoker.InvocationOutputHandler;

 import org.codehaus.plexus.util.IOUtil;

 import java.io.File;

 import java.io.FileOutputStream;

 import java.io.IOException;

 import java.io.PrintStream;

 /**

  * @version $Id: FileLogger.java 655038 2008-05-10 10:12:02Z bentmann $

  */

 public class FileLogger

     implements InvocationOutputHandler

 {

     private PrintStream stream;

     private boolean shouldFinalize = true;

     private final Log log;

     public FileLogger( File outputFile )

         throws IOException

     {

         this( outputFile, null );

     }

     public FileLogger( File outputFile, Log log )

         throws IOException

     {

         this.log = log;

         stream = new PrintStream( new FileOutputStream( outputFile  ) );

         Runnable finalizer = new Runnable()

         {

             public void run()

             {

                 try

                 {

                     finalize();

                 }

                 catch ( Throwable e )

                 {

                     // ignore

                 }

             }

         };

         Runtime.getRuntime().addShutdownHook( new Thread( finalizer ) );

     }

     public PrintStream getPrintStream()

     {

         return stream;

     }

     public void consumeLine( String line )

     {

         stream.println( line );

         stream.flush();

         if ( log != null )

         {

             log.info( line );

         }

     }

     public void close()

     {

         if ( stream != null )

         {

             stream.flush();

         }

         IOUtil.close( stream );

     }

     public void finalize()

     {

         if ( shouldFinalize )

         {

             close();

         }

     }

 }