JMS #3: Passing a context struct instead of a string

cli.go

@@ -21,18 +21,19 @@ var Flags []Flag
 var Action = ShowHelp
 
 func Run(args []string) {
+	context := Context{}
 	if len(args) > 1 {
 		name := args[1]
 		for _, c := range append(Commands, HelpCommand) {
 			if c.Name == name || c.ShortName == name {
-				c.Action(name)
+				c.Action(context)
 				return
 			}
 		}
 	}
 
 	// Run default Action
-	Action("")
+	Action(context)
 }
 
 type Command struct {
@@ -44,4 +45,7 @@ type Command struct {
 	Flags       flag.FlagSet
 }
 
-type Handler func(name string)
+type Context struct {
+}
+
+type Handler func(context Context)

help.go

@@ -22,7 +22,7 @@ func init() {
 	HelpCommand.Action = ShowHelp
 }
 
-func ShowHelp(name string) {
+func ShowHelp(c Context) {
 	helpTemplate := `NAME:
     {{.Name}} - {{.Usage}}
 
@@ -44,7 +44,7 @@ GLOBAL OPTIONS
 		Usage,
 		Version,
 		append(Commands, HelpCommand),
-    Flags,
+		Flags,
 	}
 
 	w := tabwriter.NewWriter(os.Stdout, 0, 8, 1, '\t', 0)