Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\Console\Input;
Chris@0: 
Chris@0: use Symfony\Component\Console\Exception\InvalidArgumentException;
Chris@0: 
Chris@0: /**
Chris@0:  * StringInput represents an input provided as a string.
Chris@0:  *
Chris@0:  * Usage:
Chris@0:  *
Chris@0:  *     $input = new StringInput('foo --bar="foobar"');
Chris@0:  *
Chris@0:  * @author Fabien Potencier <fabien@symfony.com>
Chris@0:  */
Chris@0: class StringInput extends ArgvInput
Chris@0: {
Chris@0:     const REGEX_STRING = '([^\s]+?)(?:\s|(?<!\\\\)"|(?<!\\\\)\'|$)';
Chris@0:     const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\')';
Chris@0: 
Chris@0:     /**
Chris@14:      * @param string $input A string representing the parameters from the CLI
Chris@0:      */
Chris@0:     public function __construct($input)
Chris@0:     {
Chris@17:         parent::__construct([]);
Chris@0: 
Chris@0:         $this->setTokens($this->tokenize($input));
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Tokenizes a string.
Chris@0:      *
Chris@0:      * @param string $input The input to tokenize
Chris@0:      *
Chris@0:      * @return array An array of tokens
Chris@0:      *
Chris@0:      * @throws InvalidArgumentException When unable to parse input (should never happen)
Chris@0:      */
Chris@0:     private function tokenize($input)
Chris@0:     {
Chris@17:         $tokens = [];
Chris@17:         $length = \strlen($input);
Chris@0:         $cursor = 0;
Chris@0:         while ($cursor < $length) {
Chris@0:             if (preg_match('/\s+/A', $input, $match, null, $cursor)) {
Chris@0:             } elseif (preg_match('/([^="\'\s]+?)(=?)('.self::REGEX_QUOTED_STRING.'+)/A', $input, $match, null, $cursor)) {
Chris@17:                 $tokens[] = $match[1].$match[2].stripcslashes(str_replace(['"\'', '\'"', '\'\'', '""'], '', substr($match[3], 1, \strlen($match[3]) - 2)));
Chris@0:             } elseif (preg_match('/'.self::REGEX_QUOTED_STRING.'/A', $input, $match, null, $cursor)) {
Chris@17:                 $tokens[] = stripcslashes(substr($match[0], 1, \strlen($match[0]) - 2));
Chris@0:             } elseif (preg_match('/'.self::REGEX_STRING.'/A', $input, $match, null, $cursor)) {
Chris@0:                 $tokens[] = stripcslashes($match[1]);
Chris@0:             } else {
Chris@0:                 // should never happen
Chris@0:                 throw new InvalidArgumentException(sprintf('Unable to parse input near "... %s ..."', substr($input, $cursor, 10)));
Chris@0:             }
Chris@0: 
Chris@17:             $cursor += \strlen($match[0]);
Chris@0:         }
Chris@0: 
Chris@0:         return $tokens;
Chris@0:     }
Chris@0: }