package org.apache.maven.surefire.junitcore;

 /*

  * 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.util.ArrayList;

 import java.util.List;

 import org.apache.maven.surefire.report.ConsoleOutputReceiver;

 import org.apache.maven.surefire.util.internal.ByteBuffer;

 /**

  * A stream-like object that preserves ordering between stdout/stderr

  */

 public class LogicalStream

 {

     private final List<Entry> output = new ArrayList<Entry>();

     class Entry

     {

         final boolean stdout;

         final byte[] b;

         final int off;

         final int len;

         Entry( boolean stdout, byte[] b, int off, int len )

         {

             this.stdout = stdout;

             this.b = ByteBuffer.copy( b, off, len );

             this.off = 0;

             this.len = len;

         }

         public void writeDetails( ConsoleOutputReceiver outputReceiver )

         {

             outputReceiver.writeTestOutput( b, off, len, stdout );

         }

         @Override

         public String toString()

         {

             return new String( b, off, len );

         }

         public boolean isBlankLine()

         {

             return "\n".equals( toString() );

         }

     }

     public synchronized void write( boolean stdout, byte b[], int off, int len )

     {

         Entry entry = new Entry( stdout, b, off, len );

         if ( !entry.isBlankLine() )

         {

             output.add( entry );

         }

     }

     public synchronized void writeDetails( ConsoleOutputReceiver outputReceiver )

     {

         for ( Entry entry : output )

         {

             entry.writeDetails( outputReceiver );

         }

     }

 }