DetectLayout tries to find out which layout is used in a local (or sftp) filesystem at the given path.

ParseLayout parses the config string and returns a Layout.

ErrLayoutDetectionFailed is returned by DetectLayout() when the layout cannot be detected automatically.

DefaultLayout implements the default layout for local and sftp backends, as described in the Design document.

LocalFilesystem implements Filesystem in a local path.

RESTLayout implements the default layout for the REST protocol.

S3LegacyLayout implements the old layout used for s3 cloud storage backends, as described in the Design document.

Filesystem is the abstraction of a file system used for a backend.

Layout computes paths for file name storage.