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vendor/symfony/console/Helper/HelperSet.php 3.37 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\Helper;
  
  use Symfony\Component\Console\Command\Command;
  
  /**
   * HelperSet represents a set of helpers to be used with a command.
   *
   * @author Fabien Potencier <fabien@symfony.com>
   */
  class HelperSet implements \IteratorAggregate
  {
      private $helpers = array();
      private $command;
  
      /**
       * Constructor.
       *
       * @param Helper[] $helpers An array of helper.
       */
      public function __construct(array $helpers = array())
      {
          foreach ($helpers as $alias => $helper) {
              $this->set($helper, is_int($alias) ? null : $alias);
          }
      }
  
      /**
       * Sets a helper.
       *
       * @param HelperInterface $helper The helper instance
       * @param string          $alias  An alias
       */
      public function set(HelperInterface $helper, $alias = null)
      {
          $this->helpers[$helper->getName()] = $helper;
          if (null !== $alias) {
              $this->helpers[$alias] = $helper;
          }
  
          $helper->setHelperSet($this);
      }
  
      /**
       * Returns true if the helper if defined.
       *
       * @param string $name The helper name
       *
       * @return bool true if the helper is defined, false otherwise
       */
      public function has($name)
      {
          return isset($this->helpers[$name]);
      }
  
      /**
       * Gets a helper value.
       *
       * @param string $name The helper name
       *
       * @return HelperInterface The helper instance
       *
       * @throws \InvalidArgumentException if the helper is not defined
       */
      public function get($name)
      {
          if (!$this->has($name)) {
              throw new \InvalidArgumentException(sprintf('The helper "%s" is not defined.', $name));
          }
  
          if ('dialog' === $name && $this->helpers[$name] instanceof DialogHelper) {
              @trigger_error('"Symfony\Component\Console\Helper\DialogHelper" is deprecated since version 2.5 and will be removed in 3.0. Use "Symfony\Component\Console\Helper\QuestionHelper" instead.', E_USER_DEPRECATED);
          } elseif ('progress' === $name && $this->helpers[$name] instanceof ProgressHelper) {
              @trigger_error('"Symfony\Component\Console\Helper\ProgressHelper" is deprecated since version 2.5 and will be removed in 3.0. Use "Symfony\Component\Console\Helper\ProgressBar" instead.', E_USER_DEPRECATED);
          } elseif ('table' === $name && $this->helpers[$name] instanceof TableHelper) {
              @trigger_error('"Symfony\Component\Console\Helper\TableHelper" is deprecated since version 2.5 and will be removed in 3.0. Use "Symfony\Component\Console\Helper\Table" instead.', E_USER_DEPRECATED);
          }
  
          return $this->helpers[$name];
      }
  
      /**
       * Sets the command associated with this helper set.
       *
       * @param Command $command A Command instance
       */
      public function setCommand(Command $command = null)
      {
          $this->command = $command;
      }
  
      /**
       * Gets the command associated with this helper set.
       *
       * @return Command A Command instance
       */
      public function getCommand()
      {
          return $this->command;
      }
  
      public function getIterator()
      {
          return new \ArrayIterator($this->helpers);
      }
  }