<?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:
 *
 *     $input = new StringInput('foo --bar="foobar"');
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class StringInput extends ArgvInput
{
    public const REGEX_STRING = '([^\s]+?)(?:\s|(?<!\\\\)"|(?<!\\\\)\'|$)';
    public const REGEX_UNQUOTED_STRING = '([^\s\\\\]+?)';
    public const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\')';

    /**
     * @param string $input A string representing the parameters from the CLI
     */
    public function __construct(string $input)
    {
        parent::__construct([]);

        $this->setTokens($this->tokenize($input));
    }

    /**
     * Tokenizes a string.
     *
     * @throws InvalidArgumentException When unable to parse input (should never happen)
     */
    private function tokenize(string $input): array
    {
        $tokens = [];
        $length = \strlen($input);
        $cursor = 0;
        $token = null;
        while ($cursor < $length) {
            if ('\\' === $input[$cursor]) {
                $token .= $input[++$cursor] ?? '';
                ++$cursor;
                continue;
            }

            if (preg_match('/\s+/A', $input, $match, 0, $cursor)) {
                if (null !== $token) {
                    $tokens[] = $token;
                    $token = null;
                }
            } elseif (preg_match('/([^="\'\s]+?)(=?)('.self::REGEX_QUOTED_STRING.'+)/A', $input, $match, 0, $cursor)) {
                $token .= $match[1].$match[2].stripcslashes(str_replace(['"\'', '\'"', '\'\'', '""'], '', substr($match[3], 1, -1)));
            } elseif (preg_match('/'.self::REGEX_QUOTED_STRING.'/A', $input, $match, 0, $cursor)) {
                $token .= stripcslashes(substr($match[0], 1, -1));
            } elseif (preg_match('/'.self::REGEX_UNQUOTED_STRING.'/A', $input, $match, 0, $cursor)) {
                $token .= $match[1];
            } else {
                // should never happen
                throw new InvalidArgumentException(sprintf('Unable to parse input near "... %s ...".', substr($input, $cursor, 10)));
            }

            $cursor += \strlen($match[0]);
        }

        if (null !== $token) {
            $tokens[] = $token;
        }

        return $tokens;
    }
}

• [F] ArgvInput.php
  Delete
• [F] ArrayInput.php
  Delete
• [F] Input.php
  Delete
• [F] InputArgument.php
  Delete
• [F] InputAwareInterface.php
  Delete
• [F] InputDefinition.php
  Delete
• [F] InputInterface.php
  Delete
• [F] InputOption.php
  Delete
• [F] StreamableInputInterface.php
  Delete
• [F] StringInput.php
  Delete

Blog Section

Discover the Latest in Digital Payments and NFC Technology

Dive into our blog to explore the cutting-edge trends in digital payments and NFC technology. Stay updated on the innovations that are revolutionizing transactions, boosting security, and making payments quicker and more convenient. Learn how these advancements are shaping the future of financial interactions and driving the global transition towards a cashless world.

The Rise of Contactless Payments:...

In recent years, contactless payments have surged in popularity, driven...

Visit Blog

March 27, 2024

Enhancing Payment Security: The Role...

As digital transactions proliferate, ensuring robust payment security is more critical than ever. Two foundational...

Visit Blog

March 27, 2024

The Future of Digital Wallets:...

Digital wallets have fundamentally transformed how we manage money, offering a streamlined, secure, and highly...

Visit Blog

March 27, 2024