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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   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\Input;
  13  
  14  use Symfony\Component\Console\Exception\InvalidArgumentException;
  15  
  16  /**
  17   * StringInput represents an input provided as a string.
  18   *
  19   * Usage:
  20   *
  21   *     $input = new StringInput('foo --bar="foobar"');
  22   *
  23   * @author Fabien Potencier <fabien@symfony.com>
  24   */
  25  class StringInput extends ArgvInput
  26  {
  27      const REGEX_STRING = '([^\s]+?)(?:\s|(?<!\\\\)"|(?<!\\\\)\'|$)';
  28      const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\')';
  29  
  30      /**
  31       * @param string          $input      A string representing the parameters from the CLI
  32       * @param InputDefinition $definition A InputDefinition instance
  33       *
  34       * @deprecated The second argument is deprecated as it does not work (will be removed in 3.0), use 'bind' method instead
  35       */
  36      public function __construct($input, InputDefinition $definition = null)
  37      {
  38          if ($definition) {
  39              @trigger_error('The $definition argument of the '.__METHOD__.' method is deprecated and will be removed in 3.0. Set this parameter with the bind() method instead.', E_USER_DEPRECATED);
  40          }
  41  
  42          parent::__construct(array(), null);
  43  
  44          $this->setTokens($this->tokenize($input));
  45  
  46          if (null !== $definition) {
  47              $this->bind($definition);
  48          }
  49      }
  50  
  51      /**
  52       * Tokenizes a string.
  53       *
  54       * @param string $input The input to tokenize
  55       *
  56       * @return array An array of tokens
  57       *
  58       * @throws InvalidArgumentException When unable to parse input (should never happen)
  59       */
  60      private function tokenize($input)
  61      {
  62          $tokens = array();
  63          $length = \strlen($input);
  64          $cursor = 0;
  65          while ($cursor < $length) {
  66              if (preg_match('/\s+/A', $input, $match, null, $cursor)) {
  67              } elseif (preg_match('/([^="\'\s]+?)(=?)('.self::REGEX_QUOTED_STRING.'+)/A', $input, $match, null, $cursor)) {
  68                  $tokens[] = $match[1].$match[2].stripcslashes(str_replace(array('"\'', '\'"', '\'\'', '""'), '', substr($match[3], 1, \strlen($match[3]) - 2)));
  69              } elseif (preg_match('/'.self::REGEX_QUOTED_STRING.'/A', $input, $match, null, $cursor)) {
  70                  $tokens[] = stripcslashes(substr($match[0], 1, \strlen($match[0]) - 2));
  71              } elseif (preg_match('/'.self::REGEX_STRING.'/A', $input, $match, null, $cursor)) {
  72                  $tokens[] = stripcslashes($match[1]);
  73              } else {
  74                  // should never happen
  75                  throw new InvalidArgumentException(sprintf('Unable to parse input near "... %s ..."', substr($input, $cursor, 10)));
  76              }
  77  
  78              $cursor += \strlen($match[0]);
  79          }
  80  
  81          return $tokens;
  82      }
  83  }