vendor/symfony/cache/Traits/FilesystemCommonTrait.php line 120
<?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\Cache\Traits;use Symfony\Component\Cache\Exception\InvalidArgumentException;/*** @author Nicolas Grekas <p@tchwork.com>** @internal*/trait FilesystemCommonTrait{private string $directory;private string $tmpSuffix;private function init(string $namespace, ?string $directory){if (!isset($directory[0])) {$directory = sys_get_temp_dir().\DIRECTORY_SEPARATOR.'symfony-cache';} else {$directory = realpath($directory) ?: $directory;}if (isset($namespace[0])) {if (preg_match('#[^-+_.A-Za-z0-9]#', $namespace, $match)) {throw new InvalidArgumentException(sprintf('Namespace contains "%s" but only characters in [-+_.A-Za-z0-9] are allowed.', $match[0]));}$directory .= \DIRECTORY_SEPARATOR.$namespace;} else {$directory .= \DIRECTORY_SEPARATOR.'@';}if (!is_dir($directory)) {@mkdir($directory, 0777, true);}$directory .= \DIRECTORY_SEPARATOR;// On Windows the whole path is limited to 258 charsif ('\\' === \DIRECTORY_SEPARATOR && \strlen($directory) > 234) {throw new InvalidArgumentException(sprintf('Cache directory too long (%s).', $directory));}$this->directory = $directory;}protected function doClear(string $namespace): bool{$ok = true;foreach ($this->scanHashDir($this->directory) as $file) {if ('' !== $namespace && !str_starts_with($this->getFileKey($file), $namespace)) {continue;}$ok = ($this->doUnlink($file) || !file_exists($file)) && $ok;}return $ok;}protected function doDelete(array $ids): bool{$ok = true;foreach ($ids as $id) {$file = $this->getFile($id);$ok = (!is_file($file) || $this->doUnlink($file) || !file_exists($file)) && $ok;}return $ok;}protected function doUnlink(string $file){return @unlink($file);}private function write(string $file, string $data, int $expiresAt = null){set_error_handler(__CLASS__.'::throwError');try {$tmp = $this->directory.$this->tmpSuffix ??= str_replace('/', '-', base64_encode(random_bytes(6)));try {$h = fopen($tmp, 'x');} catch (\ErrorException $e) {if (!str_contains($e->getMessage(), 'File exists')) {throw $e;}$tmp = $this->directory.$this->tmpSuffix = str_replace('/', '-', base64_encode(random_bytes(6)));$h = fopen($tmp, 'x');}fwrite($h, $data);fclose($h);if (null !== $expiresAt) {touch($tmp, $expiresAt ?: time() + 31556952); // 1 year in seconds}return rename($tmp, $file);} finally {restore_error_handler();}}private function getFile(string $id, bool $mkdir = false, string $directory = null){// Use MD5 to favor speed over security, which is not an issue here$hash = str_replace('/', '-', base64_encode(hash('md5', static::class.$id, true)));$dir = ($directory ?? $this->directory).strtoupper($hash[0].\DIRECTORY_SEPARATOR.$hash[1].\DIRECTORY_SEPARATOR);if ($mkdir && !is_dir($dir)) {@mkdir($dir, 0777, true);}return $dir.substr($hash, 2, 20);}private function getFileKey(string $file): string{return '';}private function scanHashDir(string $directory): \Generator{if (!is_dir($directory)) {return;}$chars = '+-ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';for ($i = 0; $i < 38; ++$i) {if (!is_dir($directory.$chars[$i])) {continue;}for ($j = 0; $j < 38; ++$j) {if (!is_dir($dir = $directory.$chars[$i].\DIRECTORY_SEPARATOR.$chars[$j])) {continue;}foreach (@scandir($dir, \SCANDIR_SORT_NONE) ?: [] as $file) {if ('.' !== $file && '..' !== $file) {yield $dir.\DIRECTORY_SEPARATOR.$file;}}}}}/*** @internal*/public static function throwError(int $type, string $message, string $file, int $line){throw new \ErrorException($message, 0, $type, $file, $line);}public function __sleep(): array{throw new \BadMethodCallException('Cannot serialize '.__CLASS__);}public function __wakeup(){throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);}public function __destruct(){if (method_exists(parent::class, '__destruct')) {parent::__destruct();}if (isset($this->tmpSuffix) && is_file($this->directory.$this->tmpSuffix)) {unlink($this->directory.$this->tmpSuffix);}}}