func getSnapshotNames(argNo int) ([]string, error) {
if flag.NArg() > argNo {
// Names of snapshots to leave are given in arguments.
names := make([]string, 0, flag.NArg()-1)
for i := argNo; i < flag.NArg(); i++ {
name := flag.Arg(i)
if !snapshot.IsValidName(name) {
return nil, fmt.Errorf("invalid snapshot name %s", name)
}
names = append(names, name)
}
return names, nil
}
// All snapshots.
return snapshot.GetNames()
}
func listFiles() error {
if flag.NArg() < 2 || flag.Arg(1) == "" {
return fmt.Errorf("expecting snapshot name or directory ref")
}
var dirRef *block.Ref
if snapshot.IsValidName(flag.Arg(1)) {
// Given snapshot ref, fetch index ref.
si, err := snapshot.LoadInfo(flag.Arg(1))
if err != nil {
return err
}
dirRef = si.DirRef
} else {
dirRef = block.RefFromHex([]byte(flag.Arg(1)))
if dirRef == nil {
return fmt.Errorf("bad ref %q", flag.Arg(1))
}
}
return listDirectory("", dirRef)
}