Add helper to split the command and arguments

lib/common.go

@@ -51,6 +51,9 @@ func BuildURI(rawuri, rawpath string) string {
 }
 
 func HasCommand(s, prefix, cmd string) bool {
+	s = strings.TrimSpace(s)
+
+	// a command cannot be less than two characters e.g. !x
 	if len(s) < 2 {
 		return false
 	}
@@ -65,3 +68,21 @@ func HasCommand(s, prefix, cmd string) bool {
 
 	return false
 }
+
+func SplitCommandAndArgs(s, prefix string) (cmd string, args []string) {
+	s = strings.TrimSpace(s)
+
+	x := strings.Split(s, " ")
+
+	if len(x) > 1 {
+		args = x[1:]
+	}
+
+	cmd = x[0]
+
+	if strings.Index(s, prefix) == 0 {
+		cmd = cmd[len(prefix):]
+	}
+
+	return cmd, args
+}