package backend import ( "fmt" "github.com/restic/restic/internal/errors" ) // FileType is the type of a file in the backend. type FileType uint8 // These are the different data types a backend can store. const ( PackFile FileType = 1 + iota KeyFile LockFile SnapshotFile IndexFile ConfigFile ) func (t FileType) String() string { s := "invalid" switch t { case PackFile: // Spelled "data" instead of "pack" for historical reasons. s = "data" case KeyFile: s = "key" case LockFile: s = "lock" case SnapshotFile: s = "snapshot" case IndexFile: s = "index" case ConfigFile: s = "config" } return s } // Handle is used to store and access data in a backend. type Handle struct { Type FileType IsMetadata bool Name string } func (h Handle) String() string { name := h.Name if len(name) > 10 { name = name[:10] } return fmt.Sprintf("<%s/%s>", h.Type, name) } // Valid returns an error if h is not valid. func (h Handle) Valid() error { switch h.Type { case PackFile: case KeyFile: case LockFile: case SnapshotFile: case IndexFile: case ConfigFile: default: return errors.Errorf("invalid Type %d", h.Type) } if h.Type == ConfigFile { return nil } if h.Name == "" { return errors.New("invalid Name") } return nil }