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<?php
namespace OC\Metadata;
use OCP\Files\File;
/**
* Interface for the metadata providers. If you want an application to provide
* some metadata, you can use this to store them.
*/
interface IMetadataProvider {
/**
* The list of groups that this metadata provider is able to provide.
*
* @return string[]
*/
public static function groupsProvided(): array;
/**
* Check if the metadata provider is available. A metadata provider might be
* unavailable due to a php extension not being installed.
*/
public static function isAvailable(): bool;
/**
* Get the mimetypes supported as a regex.
*/
public static function getMimetypesSupported(): string;
/**
* Execute the extraction on the specified file. The metadata should be
* grouped by metadata
*
* Each group should be json serializable and the string representation
* shouldn't be longer than 4000 characters.
*
* @param File $file The file to extract the metadata from
* @param array<string, FileMetadata> An array containing all the metadata fetched.
*/
public function execute(File $file): array;
}
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