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:  *     $input = new StringInput('foo --bar="foobar"');
20:  *
21:  * @author Fabien Potencier <fabien@symfony.com>
22:  *
23:  * @api
24:  */
25: class StringInput extends ArgvInput
26: {
27:     const REGEX_STRING = '([^ ]+?)(?: |(?<!\\\\)"|(?<!\\\\)\'|$)';
28:     const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\')';
29: 
30:     /**
31:      * Constructor.
32:      *
33:      * @param string     $input An array of parameters from the CLI (in the argv format)
34:      * @param InputDefinition $definition A InputDefinition instance
35:      *
36:      * @api
37:      */
38:     public function __construct($input, InputDefinition $definition = null)
39:     {
40:         parent::__construct(array(), $definition);
41: 
42:         $this->setTokens($this->tokenize($input));
43:     }
44: 
45:     /**
46:      * Tokenizes a string.
47:      *
48:      * @param string $input The input to tokenize
49:      *
50:      * @throws \InvalidArgumentException When unable to parse input (should never happen)
51:      */
52:     private function tokenize($input)
53:     {
54:         $input = preg_replace('/(\r\n|\r|\n|\t)/', ' ', $input);
55: 
56:         $tokens = array();
57:         $length = strlen($input);
58:         $cursor = 0;
59:         while ($cursor < $length) {
60:             if (preg_match('/\s+/A', $input, $match, null, $cursor)) {
61:             } elseif (preg_match('/([^="\' ]+?)(=?)('.self::REGEX_QUOTED_STRING.'+)/A', $input, $match, null, $cursor)) {
62:                 $tokens[] = $match[1].$match[2].stripcslashes(str_replace(array('"\'', '\'"', '\'\'', '""'), '', substr($match[3], 1, strlen($match[3]) - 2)));
63:             } elseif (preg_match('/'.self::REGEX_QUOTED_STRING.'/A', $input, $match, null, $cursor)) {
64:                 $tokens[] = stripcslashes(substr($match[0], 1, strlen($match[0]) - 2));
65:             } elseif (preg_match('/'.self::REGEX_STRING.'/A', $input, $match, null, $cursor)) {
66:                 $tokens[] = stripcslashes($match[1]);
67:             } else {
68:                 // should never happen
69:                 // @codeCoverageIgnoreStart
70:                 throw new \InvalidArgumentException(sprintf('Unable to parse input near "... %s ..."', substr($input, $cursor, 10)));
71:                 // @codeCoverageIgnoreEnd
72:             }
73: 
74:             $cursor += strlen($match[0]);
75:         }
76: 
77:         return $tokens;
78:     }
79: }
80: