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Standard library header <text_encoding> (C++26)

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Standard library headers

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目录

类型

(C++26)
描述访问 IANA 字符集注册表 的接口
(类)
(C++26)
std::text_encoding 的哈希支持
(类模板特化)

概要 

namespace std {
  // text_encoding
  struct text_encoding;
  // text_encoding 的哈希支持
  template<class T> struct hash;
  template<> struct hash<text_encoding>;
}

类 std::text_encoding 

namespace std {
  struct text_encoding {
    static constexpr size_t max_name_length = 63;
    // 枚举类型 text_encoding::id
    enum class id : int_least32_t {
      /* 详见描述 */
    };
    using enum id;
    constexpr text_encoding() = default;
    constexpr explicit text_encoding(string_view enc) noexcept;
    constexpr text_encoding(id i) noexcept;
    constexpr id mib() const noexcept;
    constexpr const char* name() const noexcept;
    // 类 text_encoding::aliases_view
    struct aliases_view;
    constexpr aliases_view aliases() const noexcept;
    friend constexpr bool operator==(const text_encoding& encoding,
                                     const text_encoding& other) noexcept;
    friend constexpr bool operator==(const text_encoding& encoding, id i) noexcept;
    static consteval text_encoding literal() noexcept;
    static text_encoding environment();
    template<id i> static bool environment_is();
  private:
    id mib_ = id::unknown;                                              // 仅用于说明
    char name_[max_name_length + 1] = {0};                              // 仅用于说明
    // 仅用于说明
    static constexpr bool /*comp-name*/(string_view a, string_view b);
  };
}

类 std::text_encoding::aliases_view 

struct text_encoding::aliases_view : ranges::view_interface<text_encoding::aliases_view> {
  constexpr /* 实现定义 */ begin() const;
  constexpr /* 实现定义 */ end() const;
};

枚举类型 std::text_encoding::id 

namespace std {
  enum class text_encoding::id : int_least32_t {
    other = 1,
    unknown = 2,
    ASCII = 3,
    ISOLatin1 = 4,
    ISOLatin2 = 5,
    ISOLatin3 = 6,
    ISOLatin4 = 7,
    ISOLatinCyrillic = 8,
    ISOLatinArabic = 9,
    ISOLatinGreek = 10,
    ISOLatinHebrew = 11,
    ISOLatin5 = 12,
    ISOLatin6 = 13,
    ISOTextComm = 14,
    HalfWidthKatakana = 15,
    JISEncoding = 16,
    ShiftJIS = 17,
    EUCPkdFmtJapanese = 18,
    EUCFixWidJapanese = 19,
    ISO4UnitedKingdom = 20,
    ISO11SwedishForNames = 21,
    ISO15Italian = 22,
    ISO17Spanish = 23,
    ISO21German = 24,
    ISO60DanishNorwegian = 25,
    ISO69French = 26,
    ISO10646UTF1 = 27,
    ISO646basic1983 = 28,
    INVARIANT = 29,
    ISO2IntlRefVersion = 30,
    NATSSEFI = 31,
    NATSSEFIADD = 32,
    ISO10Swedish = 35,
    KSC56011987 = 36,
    ISO2022KR = 37,
    EUCKR = 38,
    ISO2022JP = 39,
    ISO2022JP2 = 40,
    ISO13JISC6220jp = 41,
    ISO14JISC6220ro = 42,
    ISO16Portuguese = 43,
    ISO18Greek7Old = 44,
    ISO19LatinGreek = 45,
    ISO25French = 46,
    ISO27LatinGreek1 = 47,
    ISO5427Cyrillic = 48,
    ISO42JISC62261978 = 49,
    ISO47BSViewdata = 50,
    ISO49INIS = 51,
    ISO50INIS8 = 52,
    ISO51INISCyrillic = 53,
    ISO54271981 = 54,
    ISO5428Greek = 55,
    ISO57GB1988 = 56,
    ISO58GB231280 = 57,
    ISO61Norwegian2 = 58,
    ISO70VideotexSupp1 = 59,
    ISO84Portuguese2 = 60,
    ISO85Spanish2 = 61,
    ISO86Hungarian = 62,
    ISO87JISX0208 = 63,
    ISO88Greek7 = 64,
    ISO89ASMO449 = 65,
    ISO90 = 66,
    ISO91JISC62291984a = 67,
    ISO92JISC62991984b = 68,
    ISO93JIS62291984badd = 69,
    ISO94JIS62291984hand = 70,
    ISO95JIS62291984handadd = 71,
    ISO96JISC62291984kana = 72,
    ISO2033 = 73,
    ISO99NAPLPS = 74,
    ISO102T617bit = 75,
    ISO103T618bit = 76,
    ISO111ECMACyrillic = 77,
    ISO121Canadian1 = 78,
    ISO122Canadian2 = 79,
    ISO123CSAZ24341985gr = 80,
    ISO88596E = 81,
    ISO88596I = 82,
    ISO128T101G2 = 83,
    ISO88598E = 84,
    ISO88598I = 85,
    ISO139CSN369103 = 86,
    ISO141JUSIB1002 = 87,
    ISO143IECP271 = 88,
    ISO146Serbian = 89,
    ISO147Macedonian = 90,
    ISO150 = 91,
    ISO151Cuba = 92,
    ISO6937Add = 93,
    ISO153GOST1976874 = 94,
    ISO8859Supp = 95,
    ISO10367Box = 96,
    ISO158Lap = 97,
    ISO159JISX02121990 = 98,
    ISO646Danish = 99,
    USDK = 100,
    DKUS = 101,
    KSC5636 = 102,
    Unicode11UTF7 = 103,
    ISO2022CN = 104,
    ISO2022CNEXT = 105,
    UTF8 = 106,
    ISO885913 = 109,
    ISO885914 = 110,
    ISO885915 = 111,
    ISO885916 = 112,
    GBK = 113,
    GB18030 = 114,
    OSDEBCDICDF0415 = 115,
    OSDEBCDICDF03IRV = 116,
    OSDEBCDICDF041 = 117,
    ISO115481 = 118,
    KZ1048 = 119,
    UCS2 = 1000,
    UCS4 = 1001,
    UnicodeASCII = 1002,
    UnicodeLatin1 = 1003,
    UnicodeJapanese = 1004,
    UnicodeIBM1261 = 1005,
    UnicodeIBM1268 = 1006,
    UnicodeIBM1276 = 1007,
    UnicodeIBM1264 = 1008,
    UnicodeIBM1265 = 1009,
    Unicode11 = 1010,
    SCSU = 1011,
    UTF7 = 1012,
    UTF16BE = 1013,
    UTF16LE = 1014,
    UTF16 = 1015,
    CESU8 = 1016,
    UTF32 = 1017,
    UTF32BE = 1018,
    UTF32LE = 1019,
    BOCU1 = 1020,
    UTF7IMAP = 1021,
    Windows30Latin1 = 2000,
    Windows31Latin1 = 2001,
    Windows31Latin2 = 2002,
    Windows31Latin5 = 2003,
    HPRoman8 = 2004,
    AdobeStandardEncoding = 2005,
    VenturaUS = 2006,
    VenturaInternational <span class="