restic/cmd/khepri/cmd_ls.go

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2014-10-05 12:44:59 +00:00
package main
import (
"errors"
"fmt"
"os"
"path/filepath"
"github.com/fd0/khepri"
"github.com/fd0/khepri/backend"
)
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("<Node(%s) %s>", 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])
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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)
}