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<?php
/**
* SPDX-FileCopyrightText: 2020 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OC\Preview;
use OC\Archive\ZIP;
use OCP\Files\File;
use OCP\IImage;
/**
* Extracts a preview from files that embed them in an ZIP archive
*/
abstract class Bundled extends ProviderV2 {
protected function extractThumbnail(File $file, string $path): ?IImage {
if ($file->getSize() === 0) {
return null;
}
$sourceTmp = \OC::$server->getTempManager()->getTemporaryFile();
$targetTmp = \OC::$server->getTempManager()->getTemporaryFile();
$this->tmpFiles[] = $sourceTmp;
$this->tmpFiles[] = $targetTmp;
try {
$content = $file->fopen('r');
file_put_contents($sourceTmp, $content);
$zip = new ZIP($sourceTmp);
$zip->extractFile($path, $targetTmp);
$image = new \OCP\Image();
$image->loadFromFile($targetTmp);
$image->fixOrientation();
return $image;
} catch (\Throwable $e) {
return null;
}
}
}
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