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- Veröffentlicht
- 28.08.2024
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StringInput.php
01 <?php
02
03 /*
04 * This file is part of the Symfony package.
05 *
06 * (c) Fabien Potencier <fabien@symfony.com>
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * 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 $input A string representing the parameters from the CLI
32 */
33 public function __construct($input)
34 {
35 parent::__construct([]);
36
37 $this->setTokens($this->tokenize($input));
38 }
39
40 /**
41 * Tokenizes a string.
42 *
43 * @param string $input The input to tokenize
44 *
45 * @return array An array of tokens
46 *
47 * @throws InvalidArgumentException When unable to parse input (should never happen)
48 */
49 private function tokenize($input)
50 {
51 $tokens = [];
52 $length = \strlen($input);
53 $cursor = 0;
54 while ($cursor < $length) {
55 if (preg_match('/\s+/A', $input, $match, null, $cursor)) {
56 } elseif (preg_match('/([^="\'\s]+?)(=?)('.self::REGEX_QUOTED_STRING.'+)/A', $input, $match, null, $cursor)) {
57 $tokens[] = $match[1].$match[2].stripcslashes(str_replace(['"\'', '\'"', '\'\'', '""'], '', substr($match[3], 1, \strlen($match[3]) - 2)));
58 } elseif (preg_match('/'.self::REGEX_QUOTED_STRING.'/A', $input, $match, null, $cursor)) {
59 $tokens[] = stripcslashes(substr($match[0], 1, \strlen($match[0]) - 2));
60 } elseif (preg_match('/'.self::REGEX_STRING.'/A', $input, $match, null, $cursor)) {
61 $tokens[] = stripcslashes($match[1]);
62 } else {
63 // should never happen
64 throw new InvalidArgumentException(sprintf('Unable to parse input near "... %s ...".', substr($input, $cursor, 10)));
65 }
66
67 $cursor += \strlen($match[0]);
68 }
69
70 return $tokens;
71 }
72 }
73