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vendor/symfony/finder/Shell/Shell.php 1.89 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\Finder\Shell;
  
  /**
   * @author Jean-François Simon <contact@jfsimon.fr>
   */
  class Shell
  {
      const TYPE_UNIX = 1;
      const TYPE_DARWIN = 2;
      const TYPE_CYGWIN = 3;
      const TYPE_WINDOWS = 4;
      const TYPE_BSD = 5;
  
      /**
       * @var string|null
       */
      private $type;
  
      /**
       * Returns guessed OS type.
       *
       * @return int
       */
      public function getType()
      {
          if (null === $this->type) {
              $this->type = $this->guessType();
          }
  
          return $this->type;
      }
  
      /**
       * Tests if a command is available.
       *
       * @param string $command
       *
       * @return bool
       */
      public function testCommand($command)
      {
          if (!function_exists('exec')) {
              return false;
          }
  
          // todo: find a better way (command could not be available)
          $testCommand = 'which ';
          if (self::TYPE_WINDOWS === $this->type) {
              $testCommand = 'where ';
          }
  
          $command = escapeshellcmd($command);
  
          exec($testCommand.$command, $output, $code);
  
          return 0 === $code && count($output) > 0;
      }
  
      /**
       * Guesses OS type.
       *
       * @return int
       */
      private function guessType()
      {
          $os = strtolower(PHP_OS);
  
          if (false !== strpos($os, 'cygwin')) {
              return self::TYPE_CYGWIN;
          }
  
          if (false !== strpos($os, 'darwin')) {
              return self::TYPE_DARWIN;
          }
  
          if (false !== strpos($os, 'bsd')) {
              return self::TYPE_BSD;
          }
  
          if (0 === strpos($os, 'win')) {
              return self::TYPE_WINDOWS;
          }
  
          return self::TYPE_UNIX;
      }
  }