18 const std::string&
value()
const noexcept;
31 static constexpr std::size_t
maxLength() noexcept;
51 bool empty() const noexcept;
static bool isValid(const std::string &value)
Checks whether a raw export format is valid.
static std::string normalize(std::string value)
Trims leading and trailing whitespace from an export format.
static constexpr std::size_t maxLength() noexcept
Returns the maximum supported export format length.
bool empty() const noexcept
Checks whether the stored value is empty.
const std::string & value() const noexcept