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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\Console\Output;
  13  
  14  use Symfony\Component\Console\Formatter\OutputFormatter;
  15  use Symfony\Component\Console\Formatter\OutputFormatterInterface;
  16  
  17  /**
  18   * NullOutput suppresses all output.
  19   *
  20   *     $output = new NullOutput();
  21   *
  22   * @author Fabien Potencier <fabien@symfony.com>
  23   * @author Tobias Schultze <http://tobion.de>
  24   */
  25  class NullOutput implements OutputInterface
  26  {
  27      /**
  28       * {@inheritdoc}
  29       */
  30      public function setFormatter(OutputFormatterInterface $formatter)
  31      {
  32          // do nothing
  33      }
  34  
  35      /**
  36       * {@inheritdoc}
  37       */
  38      public function getFormatter()
  39      {
  40          // to comply with the interface we must return a OutputFormatterInterface
  41          return new OutputFormatter();
  42      }
  43  
  44      /**
  45       * {@inheritdoc}
  46       */
  47      public function setDecorated($decorated)
  48      {
  49          // do nothing
  50      }
  51  
  52      /**
  53       * {@inheritdoc}
  54       */
  55      public function isDecorated()
  56      {
  57          return false;
  58      }
  59  
  60      /**
  61       * {@inheritdoc}
  62       */
  63      public function setVerbosity($level)
  64      {
  65          // do nothing
  66      }
  67  
  68      /**
  69       * {@inheritdoc}
  70       */
  71      public function getVerbosity()
  72      {
  73          return self::VERBOSITY_QUIET;
  74      }
  75  
  76      /**
  77       * {@inheritdoc}
  78       */
  79      public function isQuiet()
  80      {
  81          return true;
  82      }
  83  
  84      /**
  85       * {@inheritdoc}
  86       */
  87      public function isVerbose()
  88      {
  89          return false;
  90      }
  91  
  92      /**
  93       * {@inheritdoc}
  94       */
  95      public function isVeryVerbose()
  96      {
  97          return false;
  98      }
  99  
 100      /**
 101       * {@inheritdoc}
 102       */
 103      public function isDebug()
 104      {
 105          return false;
 106      }
 107  
 108      /**
 109       * {@inheritdoc}
 110       */
 111      public function writeln($messages, $options = self::OUTPUT_NORMAL)
 112      {
 113          // do nothing
 114      }
 115  
 116      /**
 117       * {@inheritdoc}
 118       */
 119      public function write($messages, $newline = false, $options = self::OUTPUT_NORMAL)
 120      {
 121          // do nothing
 122      }
 123  }