idna.h

#ifndef SOURCEMETA_CORE_IDNA_H_
#define SOURCEMETA_CORE_IDNA_H_
 
#ifndef SOURCEMETA_CORE_IDNA_EXPORT
#include <sourcemeta/core/idna_export.h>
#endif
 
#include <sourcemeta/core/idna_ucd.h>
 
#include <cstddef>     // std::size_t
#include <cstdint>     // std::uint8_t
#include <optional>    // std::optional
#include <string>      // std::u32string
#include <string_view> // std::string_view, std::u32string_view

 
namespace sourcemeta::core {

enum class IDNALabelKind : std::uint8_t {
  Ascii = 0,
  ALabel = 1,
  ULabel = 2,
};

SOURCEMETA_CORE_IDNA_EXPORT
auto idna_classify_label(const std::u32string_view label,
                         std::u32string &decoded)
    -> std::optional<IDNALabelKind>;

SOURCEMETA_CORE_IDNA_EXPORT
auto idna_property(const char32_t codepoint) noexcept -> IDNAProperty;

SOURCEMETA_CORE_IDNA_EXPORT
auto idna_passes_contexto(const std::u32string_view label,
                          const std::size_t position) noexcept -> bool;

SOURCEMETA_CORE_IDNA_EXPORT
auto idna_passes_contextj(const std::u32string_view label,
                          const std::size_t position) noexcept -> bool;

SOURCEMETA_CORE_IDNA_EXPORT
auto idna_passes_bidi_rule(const std::u32string_view label) noexcept -> bool;

SOURCEMETA_CORE_IDNA_EXPORT
auto idna_is_valid_u_label(const std::u32string_view label) -> bool;

SOURCEMETA_CORE_IDNA_EXPORT
auto idna_is_valid_a_label(const std::string_view label) -> bool;

SOURCEMETA_CORE_IDNA_EXPORT
auto idna_uts46_map(const std::u32string_view input) -> std::u32string;
 
} // namespace sourcemeta::core
 
#endif