56 lines
1.9 KiB
PHP
56 lines
1.9 KiB
PHP
<?php
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declare(strict_types=1);
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/*
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* This file is part of the TYPO3 CMS project.
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*
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* It is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, either version 2
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* of the License, or any later version.
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*
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* For the full copyright and license information, please read the
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* LICENSE.txt file that was distributed with this source code.
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*
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* The TYPO3 project - inspiring people to share!
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*/
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namespace TYPO3\CMS\Core\Resource\Service;
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use TYPO3\CMS\Core\Resource\FileInterface;
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/**
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* Resources can contain configurations: For example to define image dimensions or
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* image masking. Resource configurations form part of the object identity and are
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* used to create an object signature that itself is used to cache objects but NOT
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* to reconstruct them. To prevent objects to be reconstructed they MUST NOT be
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* serialized. This is why an object signature is obtained by serializing its array
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* rather than serializing it directly. But attention...as well the objects array
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* MUST NOT contain resource objects which could be the case when a configuration
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* defines image masking. Here this service comes into play: it serializes any
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* object configuration, as well those containing resources.
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*/
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class ConfigurationService
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{
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public function serialize(array $configuration): string
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{
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return serialize($this->makeSerializable($configuration));
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}
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/**
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* Recursively substitute file objects with their array representation.
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*/
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protected function makeSerializable(array $configuration): array
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{
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return array_map(function (mixed $value): mixed {
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if (is_array($value)) {
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return $this->makeSerializable($value);
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}
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if ($value instanceof FileInterface) {
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return $value->toArray();
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}
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return $value;
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}, $configuration);
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}
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}
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