94 lines
3.0 KiB
PHP
94 lines
3.0 KiB
PHP
<?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) {
|
|
$line = preg_replace('~(?<!\\\\)[ \t]+$~', '', $line);
|
|
|
|
if ('!' === substr($line, 0, 1)) {
|
|
$line = substr($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('~\\\\\[((?:\\\\!)?)([^\[\]]*)\\\\\]~', function (array $matches): string {
|
|
return '['.('' !== $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, '/') ? '(?:$|/)' : '');
|
|
}
|
|
}
|