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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\Resource\Processing;
use TYPO3\CMS\Core\Service\DependencyOrderingService;
use TYPO3\CMS\Core\SingletonInterface;
use TYPO3\CMS\Core\Utility\GeneralUtility;
/**
* Registry for images processors.
*/
class ProcessorRegistry implements SingletonInterface
{
/**
* @var array
*/
protected $registeredProcessors = [];
/**
* Auto register processors from configuration
*/
public function __construct()
{
$this->registeredProcessors = GeneralUtility::makeInstance(DependencyOrderingService::class)
->orderByDependencies($this->getRegisteredProcessors());
}
/**
* Finds a matching processor that can process the given task.
* Registered processors will be tested by their priority from high to low.
*/
public function getProcessorByTask(TaskInterface $task): ProcessorInterface
{
$processor = null;
foreach ($this->registeredProcessors as $key => $processorConfiguration) {
if (!isset($processorConfiguration['className'])) {
throw new \RuntimeException(
'Missing key "className" for processor configuration "' . $key . '".',
1560875741
);
}
$processor = GeneralUtility::makeInstance($processorConfiguration['className']);
if (!$processor instanceof ProcessorInterface) {
throw new \RuntimeException(
'Processor "' . get_class($processor) . '" needs to implement interface "' . ProcessorInterface::class . '".',
1560876288
);
}
if ($processor->canProcessTask($task)) {
/*
* Stop checking for further processors to speed up image processing.
* If another processor should be used, it can be registered with higher priority.
*/
break;
}
$processor = null;
}
if ($processor === null) {
throw new \RuntimeException(
sprintf('No matching file processor found for task type "%s" and name "%s".', $task->getType(), $task->getName()),
1560876294
);
}
return $processor;
}
protected function getRegisteredProcessors(): array
{
return $GLOBALS['TYPO3_CONF_VARS']['SYS']['fal']['processors'] ?? [];
}
}