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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <[email protected]>
   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\NullOutputFormatter;
  15  use Symfony\Component\Console\Formatter\OutputFormatterInterface;
  16  
  17  /**
  18   * NullOutput suppresses all output.
  19   *
  20   *     $output = new NullOutput();
  21   *
  22   * @author Fabien Potencier <[email protected]>
  23   * @author Tobias Schultze <http://tobion.de>
  24   */
  25  class NullOutput implements OutputInterface
  26  {
  27      private $formatter;
  28  
  29      /**
  30       * {@inheritdoc}
  31       */
  32      public function setFormatter(OutputFormatterInterface $formatter)
  33      {
  34          // do nothing
  35      }
  36  
  37      /**
  38       * {@inheritdoc}
  39       */
  40      public function getFormatter()
  41      {
  42          if ($this->formatter) {
  43              return $this->formatter;
  44          }
  45          // to comply with the interface we must return a OutputFormatterInterface
  46          return $this->formatter = new NullOutputFormatter();
  47      }
  48  
  49      /**
  50       * {@inheritdoc}
  51       */
  52      public function setDecorated(bool $decorated)
  53      {
  54          // do nothing
  55      }
  56  
  57      /**
  58       * {@inheritdoc}
  59       */
  60      public function isDecorated()
  61      {
  62          return false;
  63      }
  64  
  65      /**
  66       * {@inheritdoc}
  67       */
  68      public function setVerbosity(int $level)
  69      {
  70          // do nothing
  71      }
  72  
  73      /**
  74       * {@inheritdoc}
  75       */
  76      public function getVerbosity()
  77      {
  78          return self::VERBOSITY_QUIET;
  79      }
  80  
  81      /**
  82       * {@inheritdoc}
  83       */
  84      public function isQuiet()
  85      {
  86          return true;
  87      }
  88  
  89      /**
  90       * {@inheritdoc}
  91       */
  92      public function isVerbose()
  93      {
  94          return false;
  95      }
  96  
  97      /**
  98       * {@inheritdoc}
  99       */
 100      public function isVeryVerbose()
 101      {
 102          return false;
 103      }
 104  
 105      /**
 106       * {@inheritdoc}
 107       */
 108      public function isDebug()
 109      {
 110          return false;
 111      }
 112  
 113      /**
 114       * {@inheritdoc}
 115       */
 116      public function writeln($messages, int $options = self::OUTPUT_NORMAL)
 117      {
 118          // do nothing
 119      }
 120  
 121      /**
 122       * {@inheritdoc}
 123       */
 124      public function write($messages, bool $newline = false, int $options = self::OUTPUT_NORMAL)
 125      {
 126          // do nothing
 127      }
 128  }