package org.apache.maven.plugin.surefire.report;

 /*

  * 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 java.io.IOException;

 import java.io.OutputStream;

 import java.nio.ByteBuffer;

 import java.nio.CharBuffer;

 import java.nio.charset.Charset;

 import org.apache.commons.io.output.DeferredFileOutputStream;

 /**

  * A deferred file output stream decorator that recodes the bytes written into the stream from the VM default encoding

  * to UTF-8.

  *

  * @author Andreas Gudian

  */

 class Utf8RecodingDeferredFileOutputStream

 {

     private DeferredFileOutputStream deferredFileOutputStream;

     private static final Charset UTF8 = Charset.forName( "UTF-8" );

     public Utf8RecodingDeferredFileOutputStream( String channel )

     {

         this.deferredFileOutputStream = new DeferredFileOutputStream( 1000000, channel, "deferred", null );

     }

     public void write( byte[] buf, int off, int len )

         throws IOException

     {

         if ( !Charset.defaultCharset().equals( UTF8 ) )

         {

             CharBuffer decodedFromDefaultCharset = Charset.defaultCharset().decode( ByteBuffer.wrap( buf, off, len ) );

             ByteBuffer utf8Encoded = UTF8.encode( decodedFromDefaultCharset );

             if ( utf8Encoded.hasArray() )

             {

                 byte[] convertedBytes = utf8Encoded.array();

                 deferredFileOutputStream.write( convertedBytes, utf8Encoded.position(), utf8Encoded.remaining() );

             }

             else

             {

                 byte[] convertedBytes = new byte[utf8Encoded.remaining()];

                 utf8Encoded.get( convertedBytes, 0, utf8Encoded.remaining() );

                 deferredFileOutputStream.write( convertedBytes, 0, convertedBytes.length );

             }

         }

         else

         {

             deferredFileOutputStream.write( buf, off, len );

         }

     }

     public long getByteCount()

     {

         return deferredFileOutputStream.getByteCount();

     }

     public void close()

         throws IOException

     {

         deferredFileOutputStream.close();

     }

     public void writeTo( OutputStream out )

         throws IOException

     {

         deferredFileOutputStream.writeTo( out );

     }

 }