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 );
      }
  }