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1 <?php
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2
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3 /*
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4 * This file is part of the Symfony package.
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5 *
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6 * (c) Fabien Potencier <fabien@symfony.com>
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7 *
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8 * For the full copyright and license information, please view the LICENSE
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9 * file that was distributed with this source code.
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10 */
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11
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12 namespace Symfony\Component\Console\Input;
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13
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14 use Symfony\Component\Console\Exception\InvalidArgumentException;
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15
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16 /**
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17 * StringInput represents an input provided as a string.
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18 *
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19 * Usage:
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20 *
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21 * $input = new StringInput('foo --bar="foobar"');
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22 *
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23 * @author Fabien Potencier <fabien@symfony.com>
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24 */
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25 class StringInput extends ArgvInput
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26 {
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27 const REGEX_STRING = '([^\s]+?)(?:\s|(?<!\\\\)"|(?<!\\\\)\'|$)';
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28 const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\')';
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29
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30 /**
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31 * @param string $input A string representing the parameters from the CLI
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32 */
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33 public function __construct($input)
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34 {
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35 parent::__construct([]);
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36
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37 $this->setTokens($this->tokenize($input));
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38 }
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39
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40 /**
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41 * Tokenizes a string.
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42 *
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43 * @param string $input The input to tokenize
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44 *
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45 * @return array An array of tokens
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46 *
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47 * @throws InvalidArgumentException When unable to parse input (should never happen)
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48 */
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49 private function tokenize($input)
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50 {
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51 $tokens = [];
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52 $length = \strlen($input);
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53 $cursor = 0;
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54 while ($cursor < $length) {
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55 if (preg_match('/\s+/A', $input, $match, null, $cursor)) {
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56 } elseif (preg_match('/([^="\'\s]+?)(=?)('.self::REGEX_QUOTED_STRING.'+)/A', $input, $match, null, $cursor)) {
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57 $tokens[] = $match[1].$match[2].stripcslashes(str_replace(['"\'', '\'"', '\'\'', '""'], '', substr($match[3], 1, \strlen($match[3]) - 2)));
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58 } elseif (preg_match('/'.self::REGEX_QUOTED_STRING.'/A', $input, $match, null, $cursor)) {
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59 $tokens[] = stripcslashes(substr($match[0], 1, \strlen($match[0]) - 2));
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60 } elseif (preg_match('/'.self::REGEX_STRING.'/A', $input, $match, null, $cursor)) {
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61 $tokens[] = stripcslashes($match[1]);
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62 } else {
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63 // should never happen
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64 throw new InvalidArgumentException(sprintf('Unable to parse input near "... %s ..."', substr($input, $cursor, 10)));
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65 }
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66
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67 $cursor += \strlen($match[0]);
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68 }
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69
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70 return $tokens;
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71 }
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72 }
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