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- 27.10.2014
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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 /**
15 * StringInput represents an input provided as a string.
16 *
17 * Usage:
18 *
19 * $input = new StringInput('foo --bar="foobar"');
20 *
21 * @author Fabien Potencier <fabien@symfony.com>
22 *
23 * @api
24 */
25 class StringInput extends ArgvInput
26 {
27 const REGEX_STRING = '([^\s]+?)(?:\s|(?<!\\\\)"|(?<!\\\\)\'|$)';
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 $definition A InputDefinition instance
35 *
36 * @deprecated The second argument is deprecated as it does not work (will be removed in 3.0), use 'bind' method instead
37 *
38 * @api
39 */
40 public function __construct($input, InputDefinition $definition = null)
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 // @codeCoverageIgnoreStart
76 throw new \InvalidArgumentException(sprintf('Unable to parse input near "... %s ..."', substr($input, $cursor, 10)));
77 // @codeCoverageIgnoreEnd
78 }
79
80 $cursor += strlen($match[0]);
81 }
82
83 return $tokens;
84 }
85 }
86