Add regexp support for []string about validator HOT 1 CLOSED

validator.SetValidationFunc("map", func(v interface{}, param string) error {
	vv := reflect.ValueOf(v)
	if vv.Kind() == reflect.Ptr {
		vv = vv.Elem()
	}

	if k := vv.Kind(); k != reflect.Slice && k != reflect.Array {
		return fmt.Errorf("non-array type: %s", k)
	}

	for i := 0; i < vv.Len(); i++ {
		vi := vv.Index(i).Interface()
		if err := validator.Valid(vi, param); err != nil {
			return fmt.Errorf("invalid index %d: %s", i, err)
		}
	}
	return nil
})