cmd pkg for Subcommand type, use everywhere

um.go

@@ -5,22 +5,13 @@ import (
 	"log"
 	"os"
 
-	nextpkg "github.com/brtholomy/um/go/next"
-	sortpkg "github.com/brtholomy/um/go/sort"
-	tagpkg "github.com/brtholomy/um/go/tag"
+	"github.com/brtholomy/um/go/cmd"
+	"github.com/brtholomy/um/go/next"
+	"github.com/brtholomy/um/go/sort"
+	"github.com/brtholomy/um/go/tag"
 )
 
-type Subcommand string
-
-const (
-	tag  Subcommand = "tag"
-	next Subcommand = "next"
-	last Subcommand = "last"
-	sort Subcommand = "sort"
-	help Subcommand = "help"
-)
-
-var helpShort string = fmt.Sprintf("um [%s | %s | %s | %s | %s]", tag, next, last, sort, help)
+var helpShort string = fmt.Sprintf("um [%s | %s | %s | %s | %s]", cmd.Tag, cmd.Next, cmd.Last, cmd.Sort, cmd.Help)
 var helpLong string = fmt.Sprintf(`%s
 
 An (U)ltralight database for (M)arkdown composition.
@@ -40,19 +31,19 @@ func main() {
 		log.Fatalln(helpShort)
 	}
 
-	cmd := Subcommand(os.Args[1])
+	arg := cmd.Subcommand(os.Args[1])
 	args := os.Args[2:]
 
-	switch cmd {
-	case next:
-		nextpkg.Next(args)
-	case last:
-		nextpkg.Last()
-	case tag:
-		tagpkg.Tag(args)
-	case sort:
-		sortpkg.Sort(args)
-	case help:
+	switch arg {
+	case cmd.Next:
+		next.Next(args)
+	case cmd.Last:
+		next.Last()
+	case cmd.Tag:
+		tag.Tag(args)
+	case cmd.Sort:
+		sort.Sort(args)
+	case cmd.Help:
 		log.Fatalln(helpLong)
 	default:
 		log.Println("um: command not found")