kit/cli: Add support for []string

kit/cli/viper.go

@@ -87,6 +87,13 @@ func NewCommand(p *Program) *cobra.Command {
 			cmd.Flags().DurationVar(o.DestP.(*time.Duration), o.Flag, o.Default.(time.Duration), o.Desc)
 			viper.BindPFlag(o.Flag, cmd.Flags().Lookup(o.Flag))
 			*o.DestP.(*time.Duration) = viper.GetDuration(o.Flag)
+		case *[]string:
+			if o.Default == nil {
+				o.Default = []string{}
+			}
+			cmd.Flags().StringSliceVar(o.DestP.(*[]string), o.Flag, o.Default.([]string), o.Desc)
+			viper.BindPFlag(o.Flag, cmd.Flags().Lookup(o.Flag))
+			*o.DestP.(*[]string) = viper.GetStringSlice(o.Flag)
 		default:
 			// if you get a panic here, sorry about that!
 			// anyway, go ahead and make a PR and add another type.

kit/cli/viper_test.go

@@ -11,6 +11,7 @@ func ExampleNewCommand() {
 	var number int
 	var sleep bool
 	var duration time.Duration
+	var stringSlice []string
 	cmd := NewCommand(&Program{
 		Run: func() error {
 			fmt.Println(monitorHost)
@@ -19,6 +20,7 @@ func ExampleNewCommand() {
 			}
 			fmt.Println(sleep)
 			fmt.Println(duration)
+			fmt.Println(stringSlice)
 			return nil
 		},
 		Name: "myprogram",
@@ -47,6 +49,12 @@ func ExampleNewCommand() {
 				Default: time.Minute,
 				Desc:    "how long to sleep",
 			},
+			{
+				DestP:   &stringSlice,
+				Flag:    "string-slice",
+				Default: []string{"foo", "bar"},
+				Desc:    "things come in lists",
+			},
 		},
 	})
 
@@ -59,4 +67,5 @@ func ExampleNewCommand() {
 	// 1
 	// true
 	// 1m0s
+	// [foo bar]
 }