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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\Formatter;
  13  
  14  /**
  15   * @author Tien Xuan Vo <[email protected]>
  16   */
  17  final class NullOutputFormatter implements OutputFormatterInterface
  18  {
  19      private $style;
  20  
  21      /**
  22       * {@inheritdoc}
  23       */
  24      public function format(?string $message): ?string
  25      {
  26          return null;
  27      }
  28  
  29      /**
  30       * {@inheritdoc}
  31       */
  32      public function getStyle(string $name): OutputFormatterStyleInterface
  33      {
  34          // to comply with the interface we must return a OutputFormatterStyleInterface
  35          return $this->style ?? $this->style = new NullOutputFormatterStyle();
  36      }
  37  
  38      /**
  39       * {@inheritdoc}
  40       */
  41      public function hasStyle(string $name): bool
  42      {
  43          return false;
  44      }
  45  
  46      /**
  47       * {@inheritdoc}
  48       */
  49      public function isDecorated(): bool
  50      {
  51          return false;
  52      }
  53  
  54      /**
  55       * {@inheritdoc}
  56       */
  57      public function setDecorated(bool $decorated): void
  58      {
  59          // do nothing
  60      }
  61  
  62      /**
  63       * {@inheritdoc}
  64       */
  65      public function setStyle(string $name, OutputFormatterStyleInterface $style): void
  66      {
  67          // do nothing
  68      }
  69  }