Replaced opts.InputFiles array with opts.InputFile string option

gbs/makegb.go

@@ -234,12 +234,10 @@ func MakeGB(gbsBytes []byte, outFile string) error {
 	binary.BigEndian.PutUint16(gcs, globalChecksum(gbBytes))
 	copy(gbBytes[0x14E:0x150], gcs)
 
-	written, err := utils.WriteAllBytes(outFile, gbBytes)
+	_, err = utils.WriteAllBytes(outFile, gbBytes)
 	if err != nil {
 		return err
 	}
 
-	log.Printf("gbBytes written to file: %d/%d", written, romSizeBytes)
-
 	return nil
 }

main.go

@@ -35,28 +35,23 @@ func main() {
 		log.Fatalf("Can't create output directory: %v", err)
 	}
 
-	for i, inputFile := range opts.InputFiles {
-		if i > 0 {
-			log.Println("################")
-		}
-
-		_, inputBase := path.Split(inputFile)
-		inputNoext := strings.TrimSuffix(inputBase, path.Ext(inputBase))
-		outputFile := path.Join(opts.OutDir, fmt.Sprintf("%s.gb", inputNoext))
+	_, inputBase := path.Split(opts.InputFile)
+	inputNoext := strings.TrimSuffix(inputBase, path.Ext(inputBase))
+	outputFile := path.Join(opts.OutDir, fmt.Sprintf("%s.gb", inputNoext))
 
-		log.Println(inputBase)
+	log.Printf("→ %s", inputBase)
 
-		gbsBytes, err := utils.ReadAllBytes(inputFile)
-		if err != nil {
-			log.Println(err)
-			continue
-		}
+	gbsBytes, err := utils.ReadAllBytes(opts.InputFile)
+	if err != nil {
+		log.Println(err)
+		return
+	}
 
-		err = gbs.MakeGB(gbsBytes, outputFile)
-		if err != nil {
-			log.Printf("Couldn't create GB file:")
-			log.Println(err)
-		}
+	err = gbs.MakeGB(gbsBytes, outputFile)
+	if err != nil {
+		log.Printf("Couldn't create GB file:")
+		log.Println(err)
 	}
 
+	log.Printf("Successfully created %s", outputFile)
 }

opts.go

@@ -1,7 +1,7 @@
 package main
 
 type CommandLineOpts struct {
-	InputFiles []string `short:"i" long:"input" description:"Input GBS files"`
-	OutDir     string   `short:"o" long:"outdir" description:"Output directory" default:"./"`
-	Version    bool     `short:"v" long:"version" description:"Show version and exit"`
+	InputFile string `short:"i" long:"input" description:"Input GBS file"`
+	OutDir    string `short:"o" long:"outdir" description:"Output directory" default:"./"`
+	Version   bool   `short:"v" long:"version" description:"Show version and exit"`
 }