<?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\RuntimeException;
/**
* Provides a way to continuously write to the input of a Process until the InputStream is closed.
*
* @author Nicolas Grekas <p@tchwork.com>
*
* @implements \IteratorAggregate<int, string>
*/
class InputStream implements \IteratorAggregate
{
/** @var callable|null */
private $onEmpty = null;
private $input = [];
private $open = true;
/**
* Sets a callback that is called when the write buffer becomes empty.
*/
public function onEmpty(callable $onEmpty = null)
{
$this->onEmpty = $onEmpty;
}
/**
* Appends an input to the write buffer.
*
* @param resource|string|int|float|bool|\Traversable|null $input The input to append as scalar,
* stream resource or \Traversable
*/
public function write($input)
{
 
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