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<?php
namespace OC\Preview;
use OCP\ICache;
use OCP\ICacheFactory;
class IMagickSupport {
private ICache $cache;
private ?\Imagick $imagick;
public function __construct(ICacheFactory $cacheFactory) {
$this->cache = $cacheFactory->createLocal('imagick');
if (extension_loaded('imagick')) {
$this->imagick = new \Imagick();
} else {
$this->imagick = null;
}
public function hasExtension(): bool {
return !is_null($this->imagick);
public function supportsFormat(string $format): bool {
if (is_null($this->imagick)) {
return false;
$cached = $this->cache->get($format);
if (!is_null($cached)) {
return $cached;
$formatSupported = count($this->imagick->queryFormats($format)) === 1;
$this->cache->set($format, $cached);
return $formatSupported;
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