Incorporate better moreThanOne function

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protonmail.ch>

core/commands/files/files.go

@@ -127,23 +127,18 @@ Type: <type>`),
 	Type: Object{},
 }
 
+// General utility function returning true if more than one boolean
+func moreThanOne(a, b, c bool) bool {
+	return !((a == b == c) && !(a && b && c)) && (a || b || c)
+}
+
 func statGetFormatOptions(req cmds.Request) (string, error) {
 
 	hash, _, _ := req.Option("hash").Bool()
 	size, _, _ := req.Option("size").Bool()
 	formatSpecified := req.Option("format").Found()
 
-	count := 0
-	if hash {
-		count++
-	}
-	if size {
-		count++
-	}
-	if formatSpecified {
-		count++
-	}
-	if count > 1 {
+	if moreThanOne(hash, size, formatSpecified) {
 		return "", formatError
 	}