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<?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\Process; use Symfony\Component\Process\Exception\InvalidArgumentException; /** * ProcessUtils is a bunch of utility methods. * * This class contains static methods only and is not meant to be instantiated. * * @author Martin Hasoň <martin.hason@gmail.com> */ class ProcessUtils { /** * This class should not be instantiated. */ private function __construct() { } /** * Validates and normalizes a Process input. * * @param string $caller The name of method call that validates the input * @param mixed $input The input to validate * * @throws InvalidArgumentException In case the input is not valid */ public static function validateInput(string $caller, mixed $input): mixed { if (null !== $input) { if (\is_resource($input)) { return $input; } if (\is_scalar($input)) { return (string) $input; } if ($input instanceof Process) { return $input->getIterator($input::ITER_SKIP_ERR); } if ($input instanceof \Iterator) { return $input; } if ($input instanceof \Traversable) { return new \IteratorIterator($input); } throw new InvalidArgumentException(\sprintf('"%s" only accepts strings, Traversable objects or stream resources.', $caller)); } return $input; } }