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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php
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/*
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 * This file is part of the Symfony package.
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 *
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 * (c) Fabien Potencier <fabien@symfony.com>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace Symfony\Component\Process;
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use Symfony\Component\Process\Exception\InvalidArgumentException;
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/**
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 * ProcessUtils is a bunch of utility methods.
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 *
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 * This class contains static methods only and is not meant to be instantiated.
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 *
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 * @author Martin Hasoň <martin.hason@gmail.com>
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 */
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class ProcessUtils
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{
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    /**
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     * This class should not be instantiated.
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     */
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    private function __construct()
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    {
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    }
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    /**
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     * Validates and normalizes a Process input.
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     *
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     * @param string $caller The name of method call that validates the input
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     * @param mixed  $input  The input to validate
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     *
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     * @throws InvalidArgumentException In case the input is not valid
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     */
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    public static function validateInput(string $caller, mixed $input): mixed
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    {
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        if (null !== $input) {
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            if (\is_resource($input)) {
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                return $input;
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            }
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            if (\is_string($input)) {
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                return $input;
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            }
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            if (\is_scalar($input)) {
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                return (string) $input;
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            }
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            if ($input instanceof Process) {
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                return $input->getIterator($input::ITER_SKIP_ERR);
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            }
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            if ($input instanceof \Iterator) {
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                return $input;
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            }
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            if ($input instanceof \Traversable) {
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                return new \IteratorIterator($input);
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            }
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            throw new InvalidArgumentException(sprintf('"%s" only accepts strings, Traversable objects or stream resources.', $caller));
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        }
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        return $input;
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    }
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}