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File / Folder	Size	Action
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Comparator	--	ren
Exception	--	ren
Iterator	--	ren
CHANGELOG.md	2.506KB	edt ren
Finder.php	24.104KB	edt ren
Gitignore.php	2.941KB	edt ren
Glob.php	3.515KB	edt ren
LICENSE	1.043KB	edt ren
README.md	0.483KB	edt ren
SplFileInfo.php	1.96KB	edt ren
composer.json	0.748KB	edt ren

<?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\Finder;

/**
 * Gitignore matches against text.
 *
 * @author Michael Voříšek <vorismi3@fel.cvut.cz>
 * @author Ahmed Abdou <mail@ahmd.io>
 */
class Gitignore
{
    /**
     * Returns a regexp which is the equivalent of the gitignore pattern.
     *
     * Format specification: https://git-scm.com/docs/gitignore#_pattern_format
     */
    public static function toRegex(string $gitignoreFileContent): string
    {
        return self::buildRegex($gitignoreFileContent, false);
    }

public static function toRegexMatchingNegatedPatterns(string $gitignoreFileContent): string
    {
        return self::buildRegex($gitignoreFileContent, true);
    }

private static function buildRegex(string $gitignoreFileContent, bool $inverted): string
    {
        $gitignoreFileContent = preg_replace('~(?<!\\\\)#[^\n\r]*~', '', $gitignoreFileContent);
        $gitignoreLines = preg_split('~\r\n?|\n~', $gitignoreFileContent);

$res = self::lineToRegex('');
        foreach ($gitignoreLines as $line) {
            $line = preg_replace('~(?<!\\\\)[ \t]+$~', '', $line);

if (str_starts_with($line, '!')) {
                $line = substr($line, 1);
                $isNegative = true;
            } else {
                $isNegative = false;
            }

if ('' !== $line) {
                if ($isNegative xor $inverted) {
                    $res = '(?!'.self::lineToRegex($line).'$)'.$res;
                } else {
                    $res = '(?:'.$res.'|'.self::lineToRegex($line).')';
                }
            }
        }

return '~^(?:'.$res.')~s';
    }

private static function lineToRegex(string $gitignoreLine): string
    {
        if ('' === $gitignoreLine) {
            return '$f'; // always false
        }

$slashPos = strpos($gitignoreLine, '/');
        if (false !== $slashPos && \strlen($gitignoreLine) - 1 !== $slashPos) {
            if (0 === $slashPos) {
                $gitignoreLine = substr($gitignoreLine, 1);
            }
            $isAbsolute = true;
        } else {
            $isAbsolute = false;
        }

$regex = preg_quote(str_replace('\\', '', $gitignoreLine), '~');
        $regex = preg_replace_callback('~\\\\\[((?:\\\\!)?)([^\[\]]*)\\\\\]~', fn (array $matches): string => '['.('' !== $matches[1] ? '^' : '').str_replace('\\-', '-', $matches[2]).']', $regex);
        $regex = preg_replace('~(?:(?:\\\\\*){2,}(/?))+~', '(?:(?:(?!//).(?<!//))+$1)?', $regex);
        $regex = preg_replace('~\\\\\*~', '[^/]*', $regex);
        $regex = preg_replace('~\\\\\?~', '[^/]', $regex);

return ($isAbsolute ? '' : '(?:[^/]+/)*')
            .$regex
            .(!str_ends_with($gitignoreLine, '/') ? '(?:$|/)' : '');
    }
}