<?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>
   *
   * @api
   */
  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 writeln($messages, $type = self::OUTPUT_NORMAL)
      {
          // do nothing
      }
  
      /**
       * {@inheritdoc}
       */
      public function write($messages, $newline = false, $type = self::OUTPUT_NORMAL)
      {
          // do nothing
      }
  }