diff options
| -rw-r--r-- | skate/cmd/skate-map/main.go | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/skate/cmd/skate-map/main.go b/skate/cmd/skate-map/main.go index d5f22fd..227acf2 100644 --- a/skate/cmd/skate-map/main.go +++ b/skate/cmd/skate-map/main.go @@ -54,16 +54,18 @@ var ( extraValue = flag.String("x", "", "extra value to pass to configurable mappers") bestEffort = flag.Bool("B", false, "best effort") logFile = flag.String("log", "", "log filename") - skipOnEmpty = flag.Int("skip-on-empty", -1, "omit docs with empty value in given field, zero indexed") + skipOnEmpty = flag.Int("skip-on-empty", -1, "omit docs with empty value in given column (zero indexed)") + + help = `skate-map available mappers + + $ skate-map -m ts < file.ndj > file.tsv + ` ) func main() { flag.Parse() - // TODO - // [ ] add prefixes and a way to derive multiple keys in one go - // [ ] how to store multiple keys, sorted? - // [ ] maybe wrap jq and parallel for arbitrary nested keys availableMappers := map[string]skate.Mapper{ + // Add new mapper functions here. "id": skate.Identity, "ff": skate.CreateFixedMapper(*extraValue), "ti": skate.MapperTitle, @@ -102,8 +104,7 @@ func main() { } } default: - fmt.Println("skate-map available mappers") - fmt.Println() + fmt.Println(help) w := tabwriter.NewWriter(os.Stdout, 0, 0, 4, ' ', 0) for k, v := range availableMappers { fmt.Fprintf(w, "%s\t%s\n", k, skate.NameOf(v)) |