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<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Core\Http;
use GuzzleHttp\Psr7\StreamDecoratorTrait;
use Psr\Http\Message\StreamInterface;
use TYPO3\CMS\Core\Resource\Driver\DriverInterface;
/**
* A lazy stream, that wraps the FAL dumpFileContents() method to send file contents
* using emit(), as defined in SelfEmittableStreamInterface.
* This call will fall back to the FAL getFileContents() method if the fastpath possibility
* using SelfEmittableStreamInterface is not used.
*
* @internal
*/
class FalDumpFileContentsDecoratorStream implements StreamInterface, SelfEmittableStreamInterface
{
use StreamDecoratorTrait;
public function __construct(
protected readonly string $identifier,
protected readonly DriverInterface $driver,
protected readonly int $size
) {}
/**
* Emit the response to stdout, as specified in SelfEmittableStreamInterface.
* Offload to the driver method dumpFileContents.
*/
public function emit()
{
$this->driver->dumpFileContents($this->identifier);
}
/**
* Creates a stream (on demand). This method is consumed by the guzzle StreamDecoratorTrait
* and is used when this stream is used without the emit() fastpath.
*/
protected function createStream(): StreamInterface
{
$stream = new Stream('php://temp', 'rw');
$stream->write($this->driver->getFileContents($this->identifier));
return $stream;
}
public function getSize(): int
{
return $this->size;
}
public function isWritable(): bool
{
return false;
}
/**
* @throws \RuntimeException
*/
public function write(string $string): int
{
throw new \RuntimeException('Cannot write to a ' . self::class, 1538331852);
}
}