package main import ( "errors" "fmt" "os" "path/filepath" "github.com/fd0/khepri" "github.com/fd0/khepri/backend" ) func init() { commands["ls"] = commandLs } func print_node(prefix string, n *khepri.Node) string { switch n.Type { case "file": return fmt.Sprintf("%s %5d %5d %6d %s %s", n.Mode, n.UID, n.GID, n.Size, n.ModTime, filepath.Join(prefix, n.Name)) case "dir": return fmt.Sprintf("%s %5d %5d %6d %s %s", n.Mode|os.ModeDir, n.UID, n.GID, n.Size, n.ModTime, filepath.Join(prefix, n.Name)) case "symlink": return fmt.Sprintf("%s %5d %5d %6d %s %s -> %s", n.Mode|os.ModeSymlink, n.UID, n.GID, n.Size, n.ModTime, filepath.Join(prefix, n.Name), n.LinkTarget) default: return fmt.Sprintf("", n.Type, n.Name) } } func print_tree(prefix string, ch *khepri.ContentHandler, id backend.ID) error { tree := &khepri.Tree{} err := ch.LoadJSON(backend.Tree, id, tree) if err != nil { return err } for _, entry := range *tree { fmt.Println(print_node(prefix, entry)) if entry.Type == "dir" && entry.Subtree != nil { err = print_tree(filepath.Join(prefix, entry.Name), ch, entry.Subtree) if err != nil { return err } } } return nil } func commandLs(be backend.Server, key *khepri.Key, args []string) error { if len(args) < 1 || len(args) > 2 { return errors.New("usage: ls SNAPSHOT_ID [dir]") } id, err := backend.FindSnapshot(be, args[0]) if err != nil { return err } ch, err := khepri.NewContentHandler(be, key) if err != nil { return err } sn, err := ch.LoadSnapshot(id) if err != nil { return err } fmt.Printf("snapshot of %s at %s:\n", sn.Dir, sn.Time) return print_tree("", ch, sn.Content) }