vendor/symfony/config/FileLocator.php line 33
<?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\Config;use Symfony\Component\Config\Exception\FileLocatorFileNotFoundException;/*** FileLocator uses an array of pre-defined paths to find files.** @author Fabien Potencier <fabien@symfony.com>*/class FileLocator implements FileLocatorInterface{protected $paths;/*** @param string|string[] $paths A path or an array of paths where to look for resources*/public function __construct(string|array $paths = []){$this->paths = (array) $paths;}public function locate(string $name, string $currentPath = null, bool $first = true){if ('' === $name) {throw new \InvalidArgumentException('An empty file name is not valid to be located.');}if ($this->isAbsolutePath($name)) {if (!file_exists($name)) {throw new FileLocatorFileNotFoundException(sprintf('The file "%s" does not exist.', $name), 0, null, [$name]);}return $name;}$paths = $this->paths;if (null !== $currentPath) {array_unshift($paths, $currentPath);}$paths = array_unique($paths);$filepaths = $notfound = [];foreach ($paths as $path) {if (@file_exists($file = $path.\DIRECTORY_SEPARATOR.$name)) {if (true === $first) {return $file;}$filepaths[] = $file;} else {$notfound[] = $file;}}if (!$filepaths) {throw new FileLocatorFileNotFoundException(sprintf('The file "%s" does not exist (in: "%s").', $name, implode('", "', $paths)), 0, null, $notfound);}return $filepaths;}/*** Returns whether the file path is an absolute path.*/private function isAbsolutePath(string $file): bool{if ('/' === $file[0] || '\\' === $file[0]|| (\strlen($file) > 3 && ctype_alpha($file[0])&& ':' === $file[1]&& ('\\' === $file[2] || '/' === $file[2]))|| null !== parse_url($file, \PHP_URL_SCHEME)) {return true;}return false;}}