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- <?php
- /**
- * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
- * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
- * SPDX-License-Identifier: AGPL-3.0-only
- */
- namespace OC\Preview;
- use OCP\Files\File;
- use OCP\IImage;
- use Psr\Log\LoggerInterface;
- class SVG extends ProviderV2 {
- /**
- * {@inheritDoc}
- */
- public function getMimeType(): string {
- return '/image\/svg\+xml/';
- }
- /**
- * {@inheritDoc}
- */
- public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage {
- try {
- $content = stream_get_contents($file->fopen('r'));
- if (substr($content, 0, 5) !== '<?xml') {
- $content = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>' . $content;
- }
- // Do not parse SVG files with references
- if (preg_match('/["\s](xlink:)?href\s*=/i', $content)) {
- return null;
- }
- $svg = new \Imagick();
- $svg->pingImageBlob($content);
- $mimeType = $svg->getImageMimeType();
- if (!preg_match($this->getMimeType(), $mimeType)) {
- throw new \Exception('File mime type does not match the preview provider: ' . $mimeType);
- }
- $svg->setBackgroundColor(new \ImagickPixel('transparent'));
- $svg->readImageBlob($content);
- $svg->setImageFormat('png32');
- } catch (\Exception $e) {
- \OC::$server->get(LoggerInterface::class)->error(
- 'File: ' . $file->getPath() . ' Imagick says:',
- [
- 'exception' => $e,
- 'app' => 'core',
- ]
- );
- return null;
- }
- //new image object
- $image = new \OCP\Image();
- $image->loadFromData((string) $svg);
- //check if image object is valid
- if ($image->valid()) {
- $image->scaleDownToFit($maxX, $maxY);
- return $image;
- }
- return null;
- }
- }
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