func readModDest(s *toki.Scanner, table *tbl.Table) error {
t := s.Next()
if t.Token != word {
return errFmtAddRoute
}
key := string(t.Value)
t = s.Next()
if t.Token != num {
return errFmtAddRoute
}
index, err := strconv.Atoi(strings.TrimSpace(string(t.Value)))
if err != nil {
return err
}
opts := make(map[string]string)
for t.Token != toki.EOF {
t = s.Next()
switch t.Token {
case toki.EOF:
break
case optAddr:
if t = s.Next(); t.Token != word {
return errFmtModDest
}
opts["addr"] = string(t.Value)
case optPrefix:
if t = s.Next(); t.Token != word {
return errFmtModDest
}
opts["prefix"] = string(t.Value)
case optSub:
if t = s.Next(); t.Token != word {
return errFmtModDest
}
opts["sub"] = string(t.Value)
case optRegex:
if t = s.Next(); t.Token != word {
return errFmtModDest
}
opts["regex"] = string(t.Value)
default:
return errFmtModDest
}
}
if len(opts) == 0 {
return errors.New("modDest needs at least 1 option")
}
return table.UpdateDestination(key, index, opts)
}
