Don't crash when no arguments are given

2021-03-20 20:22:38 +01:00 · 2021-03-20 20:22:38 +01:00 · a2bcc9685a
parent c271bc986d
commit a2bcc9685a
1 changed files with 6 additions and 0 deletions
--- a/main.go
+++ b/main.go
@ -112,6 +112,12 @@ func main() {
 	flag.Parse()
 	args := flag.Args()
 	argslen := len(args)
+
+	if argslen < 1 {
+		fmt.Fprintf(os.Stderr, "Usage:   ./hs9001 <add/search/init>\n")
+		return
+	}
+
 	cmd := args[0]

 	if cmd == "add" {