<?php

/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace Symfony\Component\Console\Output;

use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Formatter\OutputFormatterInterface;

/**
* NullOutput suppresses all output.
*
* $output = new NullOutput();
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Tobias Schultze <http://tobion.de>
*/
class NullOutput implements OutputInterface
{
/**
* {@inheritdoc}
*/
public function setFormatter(OutputFormatterInterface $formatter)
{
// do nothing
}

/**
* {@inheritdoc}
*/
public function getFormatter()
{
// to comply with the interface we must return a OutputFormatterInterface
return new OutputFormatter();
}

/**
* {@inheritdoc}
*/
public function setDecorated($decorated)
{
// do nothing
}

/**
* {@inheritdoc}
*/
public function isDecorated()
{
return false;
}

/**
* {@inheritdoc}
*/
public function setVerbosity($level)
{
// do nothing
}

/**
* {@inheritdoc}
*/
public function getVerbosity()
{
return self::VERBOSITY_QUIET;
}

/**
* {@inheritdoc}
*/
public function isQuiet()
{
return true;
}

/**
* {@inheritdoc}
*/
public function isVerbose()
{
return false;
}

/**
* {@inheritdoc}
*/
public function isVeryVerbose()
{
return false;
}

/**
* {@inheritdoc}
*/
public function isDebug()
{
return false;
}

/**
* {@inheritdoc}
*/
public function writeln($messages, $options = self::OUTPUT_NORMAL)
{
// do nothing
}

/**
* {@inheritdoc}
*/
public function write($messages, $newline = false, $options = self::OUTPUT_NORMAL)
{
// do nothing
}
}