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vendor/symfony/console/Formatter/OutputFormatterStyleStack.php 2.72 KB
ad2e91f7   Mihail   move multyparser ...
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  <?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\Formatter;
  
  /**
   * @author Jean-François Simon <contact@jfsimon.fr>
   */
  class OutputFormatterStyleStack
  {
      /**
       * @var OutputFormatterStyleInterface[]
       */
      private $styles;
  
      /**
       * @var OutputFormatterStyleInterface
       */
      private $emptyStyle;
  
      /**
       * Constructor.
       *
       * @param OutputFormatterStyleInterface|null $emptyStyle
       */
      public function __construct(OutputFormatterStyleInterface $emptyStyle = null)
      {
          $this->emptyStyle = $emptyStyle ?: new OutputFormatterStyle();
          $this->reset();
      }
  
      /**
       * Resets stack (ie. empty internal arrays).
       */
      public function reset()
      {
          $this->styles = array();
      }
  
      /**
       * Pushes a style in the stack.
       *
       * @param OutputFormatterStyleInterface $style
       */
      public function push(OutputFormatterStyleInterface $style)
      {
          $this->styles[] = $style;
      }
  
      /**
       * Pops a style from the stack.
       *
       * @param OutputFormatterStyleInterface|null $style
       *
       * @return OutputFormatterStyleInterface
       *
       * @throws \InvalidArgumentException When style tags incorrectly nested
       */
      public function pop(OutputFormatterStyleInterface $style = null)
      {
          if (empty($this->styles)) {
              return $this->emptyStyle;
          }
  
          if (null === $style) {
              return array_pop($this->styles);
          }
  
          foreach (array_reverse($this->styles, true) as $index => $stackedStyle) {
              if ($style->apply('') === $stackedStyle->apply('')) {
                  $this->styles = array_slice($this->styles, 0, $index);
  
                  return $stackedStyle;
              }
          }
  
          throw new \InvalidArgumentException('Incorrectly nested style tag found.');
      }
  
      /**
       * Computes current style with stacks top codes.
       *
       * @return OutputFormatterStyle
       */
      public function getCurrent()
      {
          if (empty($this->styles)) {
              return $this->emptyStyle;
          }
  
          return $this->styles[count($this->styles) - 1];
      }
  
      /**
       * @param OutputFormatterStyleInterface $emptyStyle
       *
       * @return OutputFormatterStyleStack
       */
      public function setEmptyStyle(OutputFormatterStyleInterface $emptyStyle)
      {
          $this->emptyStyle = $emptyStyle;
  
          return $this;
      }
  
      /**
       * @return OutputFormatterStyleInterface
       */
      public function getEmptyStyle()
      {
          return $this->emptyStyle;
      }
  }