package backend import "github.com/restic/restic/internal" // S3LegacyLayout implements the old layout used for s3 cloud storage backends, as // described in the Design document. type S3LegacyLayout struct { URL string Path string Join func(...string) string } var s3LayoutPaths = map[restic.FileType]string{ restic.DataFile: "data", restic.SnapshotFile: "snapshot", restic.IndexFile: "index", restic.LockFile: "lock", restic.KeyFile: "key", } func (l *S3LegacyLayout) String() string { return "" } // Name returns the name for this layout. func (l *S3LegacyLayout) Name() string { return "s3legacy" } // join calls Join with the first empty elements removed. func (l *S3LegacyLayout) join(url string, items ...string) string { for len(items) > 0 && items[0] == "" { items = items[1:] } path := l.Join(items...) if path == "" || path[0] != '/' { if url != "" && url[len(url)-1] != '/' { url += "/" } } return url + path } // Dirname returns the directory path for a given file type and name. func (l *S3LegacyLayout) Dirname(h restic.Handle) string { if h.Type == restic.ConfigFile { return l.URL + l.Join(l.Path, "/") } return l.join(l.URL, l.Path, s3LayoutPaths[h.Type]) + "/" } // Filename returns a path to a file, including its name. func (l *S3LegacyLayout) Filename(h restic.Handle) string { name := h.Name if h.Type == restic.ConfigFile { name = "config" } return l.join(l.URL, l.Path, s3LayoutPaths[h.Type], name) } // Paths returns all directory names func (l *S3LegacyLayout) Paths() (dirs []string) { for _, p := range s3LayoutPaths { dirs = append(dirs, l.Join(l.Path, p)) } return dirs } // Basedir returns the base dir name for type t. func (l *S3LegacyLayout) Basedir(t restic.FileType) string { return l.Join(l.Path, s3LayoutPaths[t]) }