flag not allowing positional arguments is lame, move from it to using flaggy

Signed-off-by: Izuru Yakumo <yakumo.izuru@chaotic.ninja>

git-svn-id: file:///srv/svn/repo/suwako/trunk@23 0b558ee1-521d-8b46-a41b-40029c97c055

cmd/suwako/main.go

@@ -1,16 +1,16 @@
-// $TheSupernovaDuo: suwako,v 1.5.2 2023/10/21 00:58:44 yakumo_izuru Exp $
+// $TheSupernovaDuo: suwako,v 1.5.3 2023/10/22 02:01:48 yakumo_izuru Exp $
 // Command line client for SimplyTranslate, a privacy friendly frontend to other translation engines
 package main
 
 import (
 	"encoding/json"
-	"flag"
 	"fmt"
 	"log"
 	"net/http"
 	"net/url"
 	"os"
 
+	"github.com/integrii/flaggy"
 	"github.com/joho/godotenv"
 	"marisa.chaotic.ninja/suwako"
 )
@@ -19,7 +19,7 @@ var (
 	engine string
 	instance string
 	input string
-	source string
+	source string = "auto"
 	target string
 )
 
@@ -34,13 +34,13 @@ func errCheck(err error) {
 }
 
 func loadCfg() {
-	flag.StringVar(&source, "f", "auto", "Set the language to translate from. This can be skipped as it will autodetect the language you're translating from")
-	flag.StringVar(&input, "i", "", "Enter the text to be translated")
-	flag.StringVar(&target, "t", "", "Set the language to translate to")
+	flaggy.SetName("suwako")
+	flaggy.SetDescription("Command line client for SimplyTranslate")
+	flaggy.SetVersion(suwako.FullVersion())
 
-	flag.Usage = func() {
-		fmt.Printf("usage: suwako -f [lang] -i [text] -t [lang]\nversion: %v\n", suwako.FullVersion())
-	}
+	flaggy.String(&source, "f", "from", "Source language")
+	flaggy.String(&target, "t", "to", "Target language")
+	flaggy.AddPositionalValue(&input, "input", 1, true, "Text to translate")
 
 	home, err := os.UserHomeDir()
 	errCheck(err)
@@ -51,7 +51,7 @@ func loadCfg() {
 	engine = os.Getenv("SUWAKO_ENGINE")
 	instance = os.Getenv("SUWAKO_INSTANCE")
 
-	flag.Parse()
+	flaggy.Parse()
 }
 
 func main() {
@@ -59,9 +59,6 @@ func main() {
 	loadCfg()
 
 	// Verify command-line inputs
-	if len(input) == 0 {
-		log.Fatal("There is no input")
-	}
 	if len(target) == 0 {
 		log.Fatal("No target language")
 	}