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 org.apache.maven.surefire.report.ConsoleOutputReceiver;
import java.util.Arrays;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
/**
* A stream-like object that preserves ordering between stdout/stderr
*/
public final class LogicalStream
{
private final Queue<Entry> output = new ConcurrentLinkedQueue<Entry>();
private static final class Entry
{
private final boolean stdout;
private final byte[] b;
private final int off;
private final int len;
private Entry( boolean stdout, byte[] b, int off, int len )
{
this.stdout = stdout;
this.b = Arrays.copyOfRange( b, off, off + len );
this.off = 0;
this.len = len;
}
private void writeDetails( ConsoleOutputReceiver outputReceiver )
{
outputReceiver.writeTestOutput( b, off, len, stdout );
}
}
public void write( boolean stdout, byte b[], int off, int len )
{
if ( !isBlankLine( b, len ) )
{
Entry entry = new Entry( stdout, b, off, len );
output.add( entry );
}
}
public void writeDetails( ConsoleOutputReceiver outputReceiver )
{
for ( Entry entry = output.poll(); entry != null; entry = output.poll() )
{
entry.writeDetails( outputReceiver );
}
}
private static boolean isBlankLine( byte[] b, int len )
{
return b == null || len == 0;
}
}