StringInput.php

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<?php
 
namespace Symfony\Component\Console\Input;
 
/*
 * This file is part of the Symfony framework.
 *
 * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */
 
class StringInput extends ArgvInput
{
    const REGEX_STRING = '([^ ]+?)(?: |(?<!\\\\)"|(?<!\\\\)\'|$)';
    const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\')';
 
    public function __construct($input, InputDefinition $definition = null)
    {
        parent::__construct(array(), $definition);
 
        $this->tokens = $this->tokenize($input);
    }
 
    protected function tokenize($input)
    {
        $input = preg_replace('/(\r\n|\r|\n|\t)/', ' ', $input);
 
        $tokens = array();
        $length = strlen($input);
        $cursor = 0;
        while ($cursor < $length) {
            if (preg_match('/\s+/A', $input, $match, null, $cursor)) {
            } elseif (preg_match('/([^="\' ]+?)(=?)('.self::REGEX_QUOTED_STRING.'+)/A', $input, $match, null, $cursor)) {
                $tokens[] = $match[1].$match[2].stripcslashes(str_replace(array('"\'', '\'"', '\'\'', '""'), '', 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
                // @codeCoverageIgnoreStart
                throw new \InvalidArgumentException(sprintf('Unable to parse input near "... %s ..."', substr($input, $cursor, 10)));
                // @codeCoverageIgnoreEnd
            }
 
            $cursor += strlen($match[0]);
        }
 
        return $tokens;
    }
}