set app flag

main.go

@@ -7,20 +7,53 @@ import (
 	"github.com/urfave/cli"
 )
 
+var (
+	person int
+	speed  int
+	pitch  int
+)
+
 func main() {
+
 	app := cli.NewApp()
 	app.Name = "say-it"
 	app.Usage = "TTS in command line -- Pronounce the Chinese or English words you typed in."
 	app.Version = "0.2.0"
+	setFlags(app)
 	app.Action = func(c *cli.Context) error {
 		if len(c.Args()) == 0 {
 			fmt.Println("Please type some words. e.g: say-it '你好, 世界'")
 			return nil
 		}
-		fmt.Println(c.Args().Get(0))
+		words := c.Args().Get(0)
+		fmt.Println(words)
 
+		fmt.Println(person, speed, pitch)
 		return nil
 	}
 
 	app.Run(os.Args)
 }
+
+func setFlags(app *cli.App) {
+	app.Flags = []cli.Flag{
+		cli.IntFlag{
+			Name:        "person, p",
+			Value:       0,
+			Destination: &person,
+			Usage:       "set different voice. 0: female, 1 and 2: male, 3: male with emotion, 4: female with emotion",
+		},
+		cli.IntFlag{
+			Name:        "speed, s",
+			Value:       5,
+			Destination: &speed,
+			Usage:       "set speed of voice. 0 - 9",
+		},
+		cli.IntFlag{
+			Name:        "pitch, t",
+			Value:       5,
+			Destination: &pitch,
+			Usage:       "set the voice pitch. 0 - 9",
+		},
+	}
+}