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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  /**
  15   * StringInput represents an input provided as a string.
  16   *
  17   * Usage:
  18   *
  19   *     $input = new StringInput('foo --bar="foobar"');
  20   *
  21   * @author Fabien Potencier <fabien@symfony.com>
  22   */
  23  class StringInput extends ArgvInput
  24  {
  25      const REGEX_STRING = '([^\s]+?)(?:\s|(?<!\\\\)"|(?<!\\\\)\'|$)';
  26      const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\')';
  27  
  28      /**
  29       * Constructor.
  30       *
  31       * @param string          $input      An array of parameters from the CLI (in the argv format)
  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          parent::__construct(array(), null);
  39  
  40          $this->setTokens($this->tokenize($input));
  41  
  42          if (null !== $definition) {
  43              $this->bind($definition);
  44          }
  45      }
  46  
  47      /**
  48       * Tokenizes a string.
  49       *
  50       * @param string $input The input to tokenize
  51       *
  52       * @return array An array of tokens
  53       *
  54       * @throws \InvalidArgumentException When unable to parse input (should never happen)
  55       */
  56      private function tokenize($input)
  57      {
  58          $tokens = array();
  59          $length = strlen($input);
  60          $cursor = 0;
  61          while ($cursor < $length) {
  62              if (preg_match('/\s+/A', $input, $match, null, $cursor)) {
  63              } elseif (preg_match('/([^="\'\s]+?)(=?)('.self::REGEX_QUOTED_STRING.'+)/A', $input, $match, null, $cursor)) {
  64                  $tokens[] = $match[1].$match[2].stripcslashes(str_replace(array('"\'', '\'"', '\'\'', '""'), '', substr($match[3], 1, strlen($match[3]) - 2)));
  65              } elseif (preg_match('/'.self::REGEX_QUOTED_STRING.'/A', $input, $match, null, $cursor)) {
  66                  $tokens[] = stripcslashes(substr($match[0], 1, strlen($match[0]) - 2));
  67              } elseif (preg_match('/'.self::REGEX_STRING.'/A', $input, $match, null, $cursor)) {
  68                  $tokens[] = stripcslashes($match[1]);
  69              } else {
  70                  // should never happen
  71                  // @codeCoverageIgnoreStart
  72                  throw new \InvalidArgumentException(sprintf('Unable to parse input near "... %s ..."', substr($input, $cursor, 10)));
  73                  // @codeCoverageIgnoreEnd
  74              }
  75  
  76              $cursor += strlen($match[0]);
  77          }
  78  
  79          return $tokens;
  80      }
  81  }