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