toml

var (
	// ErrorParamNotExists error for not exists params when read
	ErrorParamNotExists = errors.New("param not exists")
	// ErrorParamAlreadyExists error for already exists params when add
	ErrorParamAlreadyExists = errors.New("param already exists")
	// ErrorSectionNotExists error for not exists section when search
	ErrorSectionNotExists = errors.New("section not exists")
	// ErrorSectionAlreadyExists error for already exists section when add
	ErrorSectionAlreadyExists = errors.New("section already exists")
)

var Settings = toml.Config{
	NormFieldName: func(rt reflect.Type, key string) string {
		return key
	},
	FieldToKey: func(rt reflect.Type, field string) string {
		return field
	},
	MissingField: func(rt reflect.Type, field string) error {
		link := ""
		if unicode.IsUpper(rune(rt.Name()[0])) && rt.PkgPath() != "main" {
			link = fmt.Sprintf(", see https://godoc.org/%s#%s for available fields", rt.PkgPath(), rt.Name())
		}
		return fmt.Errorf("field '%s' is not defined in %s%s", field, rt.String(), link)
	},
}