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llvm-tms34010/libcxx/include/text_encoding
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William Tran-VietandA. Jiang 8a531c3608 [libc++] Implement P1885R12: <text_encoding> (#141312) 
Resolves #105373, resolves #118371 and resolves #105332

- Implements `<text_encoding>`
- Adds availability macros for LLVM 23.
- The data is stored in three tables:
  - One giant string split by null-terminators to represent the aliases
- An index table which stores indexes into the string, each entry
representing the first character of an alias
- Text encoding data, which stores an index to the index table, the MIB,
and the number of aliases the encoding has.

Storing it in the above manner allows us to make significant savings in
binary file size and required runtime storage for the data.

As required by the LLVM Project's AI use policy:
- The implementation for `__get_locale_encoding(const char*)` for
Windows has been developed with the assistance of AI.

---------

Co-authored-by: A. Jiang <de34@live.cn>
2026-06-25 07:46:11 +08:00

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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_TEXT_ENCODING
#define _LIBCPP_TEXT_ENCODING
/* text_encoding synopsis
namespace std {
struct text_encoding;
// [text.encoding.hash], hash support
template<class T> struct hash;
template<> struct hash<text_encoding>;
struct text_encoding
{
static constexpr size_t max_name_length = 63;
// [text.encoding.id], enumeration text_encoding::id
enum class id : int_least32_t {
see below
};
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;
// [text.encoding.aliases], class text_encoding::aliases_view
// struct aliases_view;
constexpr aliases_view aliases() const noexcept;
friend constexpr bool operator==(const text_encoding& a,
const text_encoding& b) 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; // exposition only
char name_[max_name_length + 1] = {0}; // exposition only
static constexpr bool comp-name(string_view a, string_view b); // exposition only
};
}
*/
#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
# include <__cxx03/__config>
#else
# include <__config>
# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
# endif
# if _LIBCPP_STD_VER >= 26
# include <__algorithm/count.h>
# include <__algorithm/find_if.h>
# include <__algorithm/lower_bound.h>
# include <__cstddef/ptrdiff_t.h>
# include <__functional/hash.h>
# include <__iterator/iterator_traits.h>
# include <__ranges/enable_borrowed_range.h>
# include <__ranges/view_interface.h>
# include <climits>
# include <cstdint>
# include <string_view>
# include <version>
_LIBCPP_BEGIN_NAMESPACE_STD
struct text_encoding;
_LIBCPP_BEGIN_EXPLICIT_ABI_ANNOTATIONS
_LIBCPP_AVAILABILITY_TEXT_ENCODING_ENVIRONMENT _LIBCPP_EXPORTED_FROM_ABI text_encoding
__get_locale_encoding(const char* __name);
_LIBCPP_END_EXPLICIT_ABI_ANNOTATIONS
struct text_encoding {
static_assert(CHAR_BIT == 8, "libc++ only supports platforms where CHAR_BIT == 8");
enum class 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, // NATS-DANO (33) and NATS-DANO-ADD (34) are omitted by the standard.
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 = 2007,
DECMCS = 2008,
PC850Multilingual = 2009,
PC8DanishNorwegian = 2012,
PC862LatinHebrew = 2013,
PC8Turkish = 2014,
IBMSymbols = 2015,
IBMThai = 2016,
HPLegal = 2017,
HPPiFont = 2018,
HPMath8 = 2019,
HPPSMath = 2020,
HPDesktop = 2021,
VenturaMath = 2022,
MicrosoftPublishing = 2023,
Windows31J = 2024,
GB2312 = 2025,
Big5 = 2026,
Macintosh = 2027,
IBM037 = 2028,
IBM038 = 2029,
IBM273 = 2030,
IBM274 = 2031,
IBM275 = 2032,
IBM277 = 2033,
IBM278 = 2034,
IBM280 = 2035,
IBM281 = 2036,
IBM284 = 2037,
IBM285 = 2038,
IBM290 = 2039,
IBM297 = 2040,
IBM420 = 2041,
IBM423 = 2042,
IBM424 = 2043,
PC8CodePage437 = 2011,
IBM500 = 2044,
IBM851 = 2045,
PCp852 = 2010,
IBM855 = 2046,
IBM857 = 2047,
IBM860 = 2048,
IBM861 = 2049,
IBM863 = 2050,
IBM864 = 2051,
IBM865 = 2052,
IBM868 = 2053,
IBM869 = 2054,
IBM870 = 2055,
IBM871 = 2056,
IBM880 = 2057,
IBM891 = 2058,
IBM903 = 2059,
IBM904 = 2060,
IBM905 = 2061,
IBM918 = 2062,
IBM1026 = 2063,
IBMEBCDICATDE = 2064,
EBCDICATDEA = 2065,
EBCDICCAFR = 2066,
EBCDICDKNO = 2067,
EBCDICDKNOA = 2068,
EBCDICFISE = 2069,
EBCDICFISEA = 2070,
EBCDICFR = 2071,
EBCDICIT = 2072,
EBCDICPT = 2073,
EBCDICES = 2074,
EBCDICESA = 2075,
EBCDICESS = 2076,
EBCDICUK = 2077,
EBCDICUS = 2078,
Unknown8BiT = 2079,
Mnemonic = 2080,
Mnem = 2081,
VISCII = 2082,
VIQR = 2083,
KOI8R = 2084,
HZGB2312 = 2085,
IBM866 = 2086,
PC775Baltic = 2087,
KOI8U = 2088,
IBM00858 = 2089,
IBM00924 = 2090,
IBM01140 = 2091,
IBM01141 = 2092,
IBM01142 = 2093,
IBM01143 = 2094,
IBM01144 = 2095,
IBM01145 = 2096,
IBM01146 = 2097,
IBM01147 = 2098,
IBM01148 = 2099,
IBM01149 = 2100,
Big5HKSCS = 2101,
IBM1047 = 2102,
PTCP154 = 2103,
Amiga1251 = 2104,
KOI7switched = 2105,
BRF = 2106,
TSCII = 2107,
CP51932 = 2108,
windows874 = 2109,
windows1250 = 2250,
windows1251 = 2251,
windows1252 = 2252,
windows1253 = 2253,
windows1254 = 2254,
windows1255 = 2255,
windows1256 = 2256,
windows1257 = 2257,
windows1258 = 2258,
TIS620 = 2259,
CP50220 = 2260
};
private:
static constexpr int __nats_dano_ = 33;
static constexpr int __nats_dano_add_ = 34;
// A __te_data structure stores:
// Index into a table of offsets in the giant aliases string
// The MIB of that text encoding
// Number of aliases the current MIB holds
// We only need 6 bytes of information to store this information.
// The data is structured in three different locations:
// The mib table (array of __te_data)
// Aliases string
// Table of offsets into the aliases string
// All of the alias strings were transformed from an array of char* into one giant string split by '\0'.
// This allows us to reduce runtime memory footprint by not only removing the need to store ~884 pointers, it also
// significantly reduces the disk space taken by removing the need for relocation data for those pointers.
// We also know ahead of time that the total number of characters of all of these aliases combined can fit into 2
// bytes, so we can also save even more memory by using 2 byte offsets rather than a full pointer into the aliases
// string.
struct __te_data {
unsigned short __first_alias_index_;
unsigned short __mib_rep_;
unsigned char __num_aliases_;
friend constexpr bool operator<(const __te_data& __enc, id __i) noexcept {
return __enc.__mib_rep_ < static_cast<unsigned short>(__i);
}
};
static constexpr bool __comp_name(string_view __a, string_view __b) noexcept {
if (__a.empty() || __b.empty()) {
return false;
}
// Map any non-alphanumeric character to 255, skip prefix 0s, else get tolower(__n).
auto __map_char = [](char __n, bool& __in_number) -> unsigned char {
if (__n == '0') {
return __in_number ? '0' : 255;
}
__in_number = __n >= '1' && __n <= '9';
if ((__n >= '1' && __n <= '9') || (__n >= 'a' && __n <= 'z')) {
return __n;
}
if (__n >= 'A' && __n <= 'Z') {
return __n + ('a' - 'A'); // tolower
}
return 255;
};
auto __a_ptr = __a.begin(), __b_ptr = __b.begin();
bool __a_in_number = false, __b_in_number = false;
unsigned char __a_val = 255, __b_val = 255;
for (;; __a_ptr++, __b_ptr++) {
while (__a_ptr != __a.end() && (__a_val = __map_char(*__a_ptr, __a_in_number)) == 255)
__a_ptr++;
while (__b_ptr != __b.end() && (__b_val = __map_char(*__b_ptr, __b_in_number)) == 255)
__b_ptr++;
if (__a_ptr == __a.end())
return __b_ptr == __b.end();
if (__b_ptr == __b.end())
return false;
if (__a_val != __b_val)
return false;
}
return true;
}
static constexpr unsigned short __find_data_idx(string_view __a) noexcept {
_LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(__a.size() <= max_name_length, "input string_view must have size <= 63");
_LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(!__a.contains('\0'), "input string_view must not contain '\\0'");
auto __pred = [&__a](const __te_data& __entry) -> bool {
// Search aliases of text encoding for string
aliases_view __aliases(__entry);
return std::find_if(__aliases.begin(), __aliases.end(), [&__a](auto __alias) {
return __comp_name(__a, __alias);
}) != __aliases.end();
};
const __te_data* __found = std::find_if(__entries + 2, std::end(__entries), __pred);
if (__found == std::end(__entries)) {
return __other_idx_; // other
}
return __found - __entries;
}
static constexpr unsigned short __find_data_idx_by_id(id __i) noexcept {
_LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(__i >= id::other, "invalid text_encoding::id passed");
_LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(__i <= id::CP50220, "invalid text_encoding::id passed");
_LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(int_least32_t(__i) != __nats_dano_, "Mib for NATS-DANO used");
_LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(int_least32_t(__i) != __nats_dano_add_, "Mib for NATS-DANO-ADD used");
auto __found = std::lower_bound(std::begin(__entries), std::end(__entries), __i);
if (__found == std::end(__entries)) {
return __unknown_idx_; // unknown
}
return __found - __entries;
}
public:
using enum id;
static constexpr size_t max_name_length = 63;
// [text.encoding.aliases], class text_encoding::aliases_view
struct aliases_view : ranges::view_interface<aliases_view> {
struct __iterator {
using iterator_concept = random_access_iterator_tag;
using iterator_category = random_access_iterator_tag;
using value_type = const char*;
using reference = const char*;
using difference_type = int;
constexpr __iterator() noexcept = default;
[[nodiscard]] constexpr reference operator*() const noexcept {
return __get_alias_from_offset_table(__current_idx_);
}
[[nodiscard]] constexpr reference operator[](difference_type __n) const noexcept {
auto __it = *this;
return *(__it + __n);
}
[[nodiscard]] friend constexpr __iterator operator+(__iterator __it, difference_type __n) noexcept {
__it += __n;
return __it;
}
[[nodiscard]] friend constexpr __iterator operator+(difference_type __n, __iterator __it) noexcept {
__it += __n;
return __it;
}
[[nodiscard]] friend constexpr __iterator operator-(__iterator __it, difference_type __n) noexcept {
__it -= __n;
return __it;
}
[[nodiscard]] constexpr difference_type operator-(const __iterator& __other) const noexcept {
return __current_idx_ - __other.__current_idx_;
}
constexpr __iterator& operator++() noexcept {
__current_idx_++;
return *this;
}
constexpr __iterator operator++(int) noexcept {
auto __old = *this;
__current_idx_++;
return __old;
}
constexpr __iterator& operator--() noexcept {
__current_idx_--;
return *this;
}
constexpr __iterator operator--(int) noexcept {
auto __old = *this;
__current_idx_--;
return __old;
}
constexpr __iterator& operator+=(difference_type __n) noexcept {
__current_idx_ += __n;
return *this;
}
constexpr __iterator& operator-=(difference_type __n) noexcept { return (*this += -__n); }
friend constexpr auto operator<=>(const __iterator& __it, const __iterator& __it2) noexcept = default;
private:
friend struct aliases_view;
constexpr __iterator(unsigned short __enc_d) noexcept : __current_idx_(__enc_d) {}
unsigned short __current_idx_;
}; // __iterator
[[nodiscard]] constexpr __iterator begin() const noexcept { return __iterator(__first_idx_); }
[[nodiscard]] constexpr __iterator end() const noexcept { return __iterator(__last_idx_); }
private:
friend struct text_encoding;
constexpr aliases_view(const __te_data& __d)
: __first_idx_(__d.__first_alias_index_), __last_idx_(__d.__first_alias_index_ + __d.__num_aliases_) {}
unsigned short __first_idx_;
unsigned short __last_idx_;
}; // aliases_view
constexpr text_encoding() = default;
constexpr explicit text_encoding(string_view __enc) noexcept : __encoding_idx_(__find_data_idx(__enc)) {
__enc.copy(__name_, max_name_length, 0);
}
constexpr text_encoding(id __i) noexcept : __encoding_idx_(__find_data_idx_by_id(__i)) {
const char* __alias = __get_alias_from_offset_table(__get().__first_alias_index_);
if (__alias[0] != '\0') {
string_view(__alias).copy(__name_, max_name_length);
}
}
[[nodiscard]] constexpr id mib() const noexcept { return id(__get().__mib_rep_); }
[[nodiscard]] constexpr const char* name() const noexcept { return __name_; }
[[nodiscard]] constexpr aliases_view aliases() const noexcept { return aliases_view(__get()); }
friend constexpr bool operator==(const text_encoding& __a, const text_encoding& __b) noexcept {
return __a.mib() == id::other && __b.mib() == id::other
? __comp_name(__a.__name_, __b.__name_)
: __a.mib() == __b.mib();
}
friend constexpr bool operator==(const text_encoding& __encoding, id __i) noexcept { return __encoding.mib() == __i; }
[[nodiscard]] static consteval text_encoding literal() noexcept {
// TODO: Remove this branch once we have __GNUC_EXECUTION_CHARSET_NAME or __clang_literal_encoding__ unconditionally
# ifdef __GNUC_EXECUTION_CHARSET_NAME
return text_encoding(__GNUC_EXECUTION_CHARSET_NAME);
# elif defined(__clang_literal_encoding__)
return text_encoding(__clang_literal_encoding__);
# else
return text_encoding();
# endif
}
# if _LIBCPP_HAS_LOCALIZATION
[[nodiscard]] _LIBCPP_AVAILABILITY_TEXT_ENCODING_ENVIRONMENT static text_encoding environment() {
# if defined(_LIBCPP_WIN32API)
return __get_locale_encoding(nullptr);
# else
return __get_locale_encoding("");
# endif
}
template <id _Id>
[[nodiscard]] _LIBCPP_AVAILABILITY_TEXT_ENCODING_ENVIRONMENT static bool environment_is() {
// TODO: It may be worthwhile to implement an optimization for popular encodings, e.g. UTF-8,
// to allow checking the environment text encoding without needing to use the data tables.
# if defined(__ANDROID__)
return _Id == std::text_encoding::id::UTF8;
# else
return environment() == _Id;
# endif
}
# else
static text_encoding environment() = delete;
template <id>
static bool environment_is() = delete;
# endif
private:
constexpr const __te_data& __get() const { return __entries[__encoding_idx_]; }
static constexpr char const* __get_alias_from_offset_table(unsigned short __idx) {
return __aliases_string + __alias_offsets.__table[__idx];
}
static constexpr auto __other_idx_ = 0u;
static constexpr auto __unknown_idx_ = 1u;
char __name_[max_name_length + 1]{};
unsigned short __encoding_idx_{1u};
static constexpr __te_data __entries[] = {
{0, 1, 0}, {1, 2, 0}, {2, 3, 11}, {13, 4, 9}, {22, 5, 7}, {29, 6, 7}, {36, 7, 7},
{43, 8, 6}, {49, 9, 8}, {57, 10, 9}, {66, 11, 6}, {72, 12, 7}, {79, 13, 6}, {85, 14, 3},
{88, 15, 3}, {91, 16, 2}, {93, 17, 3}, {96, 18, 3}, {99, 19, 2}, {101, 20, 6}, {107, 21, 5},
{112, 22, 4}, {116, 23, 4}, {120, 24, 5}, {125, 25, 6}, {131, 26, 5}, {136, 27, 2}, {138, 28, 3},
{141, 29, 2}, {143, 30, 4}, {147, 31, 3}, {150, 32, 3}, {153, 35, 7}, {160, 36, 6}, {166, 37, 2},
{168, 38, 2}, {170, 39, 2}, {172, 40, 2}, {174, 41, 6}, {180, 42, 5}, {185, 43, 4}, {189, 44, 3},
{192, 45, 3}, {195, 46, 4}, {199, 47, 3}, {202, 48, 3}, {205, 49, 3}, {208, 50, 3}, {211, 51, 3},
{214, 52, 3}, {217, 53, 3}, {220, 54, 4}, {224, 55, 3}, {227, 56, 5}, {232, 57, 4}, {236, 58, 5},
{241, 59, 3}, {244, 60, 4}, {248, 61, 4}, {252, 62, 5}, {257, 63, 5}, {262, 64, 3}, {265, 65, 5},
{270, 66, 2}, {272, 67, 4}, {276, 68, 5}, {281, 69, 4}, {285, 70, 4}, {289, 71, 4}, {293, 72, 3},
{296, 73, 4}, {300, 74, 5}, {305, 75, 3}, {308, 76, 4}, {312, 77, 4}, {316, 78, 7}, {323, 79, 6},
{329, 80, 3}, {332, 81, 3}, {335, 82, 3}, {338, 83, 3}, {341, 84, 3}, {344, 85, 3}, {347, 86, 3},
{350, 87, 6}, {356, 88, 3}, {359, 89, 4}, {363, 90, 4}, {367, 91, 4}, {371, 92, 5}, {376, 93, 3},
{379, 94, 4}, {383, 95, 4}, {387, 96, 3}, {390, 97, 4}, {394, 98, 4}, {398, 99, 5}, {403, 100, 2},
{405, 101, 2}, {407, 102, 3}, {410, 103, 2}, {412, 104, 2}, {414, 105, 2}, {416, 106, 2}, {418, 109, 2},
{420, 110, 8}, {428, 111, 4}, {432, 112, 7}, {439, 113, 5}, {444, 114, 2}, {446, 115, 2}, {448, 116, 2},
{450, 117, 2}, {452, 118, 4}, {456, 119, 4}, {460, 1000, 2}, {462, 1001, 2}, {464, 1002, 2}, {466, 1003, 3},
{469, 1004, 2}, {471, 1005, 2}, {473, 1006, 2}, {475, 1007, 2}, {477, 1008, 2}, {479, 1009, 2}, {481, 1010, 2},
{483, 1011, 2}, {485, 1012, 2}, {487, 1013, 2}, {489, 1014, 2}, {491, 1015, 2}, {493, 1016, 3}, {496, 1017, 2},
{498, 1018, 2}, {500, 1019, 2}, {502, 1020, 3}, {505, 1021, 2}, {507, 2000, 2}, {509, 2001, 2}, {511, 2002, 2},
{513, 2003, 2}, {515, 2004, 4}, {519, 2005, 2}, {521, 2006, 2}, {523, 2007, 2}, {525, 2008, 3}, {528, 2009, 4},
{532, 2010, 4}, {536, 2011, 4}, {540, 2012, 2}, {542, 2013, 4}, {546, 2014, 2}, {548, 2015, 2}, {550, 2016, 2},
{552, 2017, 2}, {554, 2018, 2}, {556, 2019, 2}, {558, 2020, 2}, {560, 2021, 2}, {562, 2022, 2}, {564, 2023, 2},
{566, 2024, 2}, {568, 2025, 2}, {570, 2026, 2}, {572, 2027, 3}, {575, 2028, 7}, {582, 2029, 4}, {586, 2030, 3},
{589, 2031, 4}, {593, 2032, 4}, {597, 2033, 4}, {601, 2034, 5}, {606, 2035, 4}, {610, 2036, 4}, {614, 2037, 4},
{618, 2038, 4}, {622, 2039, 4}, {626, 2040, 4}, {630, 2041, 4}, {634, 2042, 4}, {638, 2043, 4}, {642, 2044, 5},
{647, 2045, 4}, {651, 2046, 4}, {655, 2047, 4}, {659, 2048, 4}, {663, 2049, 5}, {668, 2050, 4}, {672, 2051, 3},
{675, 2052, 4}, {679, 2053, 4}, {683, 2054, 5}, {688, 2055, 5}, {693, 2056, 4}, {697, 2057, 4}, {701, 2058, 3},
{704, 2059, 3}, {707, 2060, 4}, {711, 2061, 4}, {715, 2062, 4}, {719, 2063, 3}, {722, 2064, 2}, {724, 2065, 2},
{726, 2066, 2}, {728, 2067, 2}, {730, 2068, 2}, {732, 2069, 2}, {734, 2070, 2}, {736, 2071, 2}, {738, 2072, 2},
{740, 2073, 2}, {742, 2074, 2}, {744, 2075, 2}, {746, 2076, 2}, {748, 2077, 2}, {750, 2078, 2}, {752, 2079, 2},
{754, 2080, 2}, {756, 2081, 2}, {758, 2082, 2}, {760, 2083, 2}, {762, 2084, 2}, {764, 2085, 1}, {765, 2086, 4},
{769, 2087, 3}, {772, 2088, 2}, {774, 2089, 5}, {779, 2090, 5}, {784, 2091, 5}, {789, 2092, 5}, {794, 2093, 6},
{800, 2094, 6}, {806, 2095, 5}, {811, 2096, 5}, {816, 2097, 5}, {821, 2098, 5}, {826, 2099, 5}, {831, 2100, 5},
{836, 2101, 2}, {838, 2102, 3}, {841, 2103, 5}, {846, 2104, 5}, {851, 2105, 2}, {853, 2106, 2}, {855, 2107, 2},
{857, 2108, 2}, {859, 2109, 2}, {861, 2250, 2}, {863, 2251, 2}, {865, 2252, 2}, {867, 2253, 2}, {869, 2254, 2},
{871, 2255, 2}, {873, 2256, 2}, {875, 2257, 2}, {877, 2258, 2}, {879, 2259, 3}, {882, 2260, 2}};
static constexpr char __aliases_string[] =
"US-ASCII\0iso-ir-6\0ANSI_X3.4-1968\0ANSI_X3.4-1986\0ISO_646.irv:1991\0ISO646-"
"US\0us\0IBM367\0cp367\0csASCII\0ASCII\0ISO_8859-1:1987\0iso-ir-100\0ISO_8859-1\0ISO-8859-"
"1\0latin1\0l1\0IBM819\0CP819\0csISOLatin1\0ISO_8859-2:1987\0iso-ir-101\0ISO_8859-2\0ISO-8859-"
"2\0latin2\0l2\0csISOLatin2\0ISO_8859-3:1988\0iso-ir-109\0ISO_8859-3\0ISO-8859-3\0latin3\0l3\0csISOLatin3\0ISO_"
"8859-4:1988\0iso-ir-110\0ISO_8859-4\0ISO-8859-4\0latin4\0l4\0csISOLatin4\0ISO_8859-5:1988\0iso-ir-144\0ISO_8859-"
"5\0ISO-8859-5\0cyrillic\0csISOLatinCyrillic\0ISO_8859-6:1987\0iso-ir-127\0ISO_8859-6\0ISO-8859-6\0ECMA-"
"114\0ASMO-708\0arabic\0csISOLatinArabic\0ISO_8859-7:1987\0iso-ir-126\0ISO_8859-7\0ISO-8859-7\0ELOT_928\0ECMA-"
"118\0greek\0greek8\0csISOLatinGreek\0ISO_8859-8:1988\0iso-ir-138\0ISO_8859-8\0ISO-8859-"
"8\0hebrew\0csISOLatinHebrew\0ISO_8859-9:1989\0iso-ir-148\0ISO_8859-9\0ISO-8859-9\0latin5\0l5\0csISOLatin5\0ISO-"
"8859-10\0iso-ir-157\0l6\0ISO_8859-10:1992\0csISOLatin6\0latin6\0ISO_6937-2-add\0iso-ir-142\0csISOTextComm\0JIS_"
"X0201\0X0201\0csHalfWidthKatakana\0JIS_Encoding\0csJISEncoding\0Shift_JIS\0MS_Kanji\0csShiftJIS\0Extended_UNIX_"
"Code_Packed_Format_for_Japanese\0csEUCPkdFmtJapanese\0EUC-JP\0Extended_UNIX_Code_Fixed_Width_for_"
"Japanese\0csEUCFixWidJapanese\0BS_4730\0iso-ir-4\0ISO646-GB\0gb\0uk\0csISO4UnitedKingdom\0SEN_850200_C\0iso-ir-"
"11\0ISO646-SE2\0se2\0csISO11SwedishForNames\0IT\0iso-ir-15\0ISO646-IT\0csISO15Italian\0ES\0iso-ir-17\0ISO646-"
"ES\0csISO17Spanish\0DIN_66003\0iso-ir-21\0de\0ISO646-DE\0csISO21German\0NS_4551-1\0iso-ir-60\0ISO646-"
"NO\0no\0csISO60DanishNorwegian\0csISO60Norwegian1\0NF_Z_62-010\0iso-ir-69\0ISO646-FR\0fr\0csISO69French\0ISO-"
"10646-UTF-1\0csISO10646UTF1\0ISO_646.basic:1983\0ref\0csISO646basic1983\0INVARIANT\0csINVARIANT\0ISO_646.irv:"
"1983\0iso-ir-2\0irv\0csISO2IntlRefVersion\0NATS-SEFI\0iso-ir-8-1\0csNATSSEFI\0NATS-SEFI-ADD\0iso-ir-8-"
"2\0csNATSSEFIADD\0SEN_850200_B\0iso-ir-10\0FI\0ISO646-FI\0ISO646-SE\0se\0csISO10Swedish\0KS_C_5601-1987\0iso-ir-"
"149\0KS_C_5601-1989\0KSC_5601\0korean\0csKSC56011987\0ISO-2022-KR\0csISO2022KR\0EUC-KR\0csEUCKR\0ISO-2022-"
"JP\0csISO2022JP\0ISO-2022-JP-2\0csISO2022JP2\0JIS_C6220-1969-jp\0JIS_C6220-1969\0iso-ir-13\0katakana\0x0201-"
"7\0csISO13JISC6220jp\0JIS_C6220-1969-ro\0iso-ir-14\0jp\0ISO646-JP\0csISO14JISC6220ro\0PT\0iso-ir-16\0ISO646-"
"PT\0csISO16Portuguese\0greek7-old\0iso-ir-18\0csISO18Greek7Old\0latin-greek\0iso-ir-19\0csISO19LatinGreek\0NF_Z_"
"62-010_(1973)\0iso-ir-25\0ISO646-FR1\0csISO25French\0Latin-greek-1\0iso-ir-27\0csISO27LatinGreek1\0ISO_"
"5427\0iso-ir-37\0csISO5427Cyrillic\0JIS_C6226-1978\0iso-ir-42\0csISO42JISC62261978\0BS_viewdata\0iso-ir-"
"47\0csISO47BSViewdata\0INIS\0iso-ir-49\0csISO49INIS\0INIS-8\0iso-ir-50\0csISO50INIS8\0INIS-cyrillic\0iso-ir-"
"51\0csISO51INISCyrillic\0ISO_5427:1981\0iso-ir-54\0ISO5427Cyrillic1981\0csISO54271981\0ISO_5428:1980\0iso-ir-"
"55\0csISO5428Greek\0GB_1988-80\0iso-ir-57\0cn\0ISO646-CN\0csISO57GB1988\0GB_2312-80\0iso-ir-"
"58\0chinese\0csISO58GB231280\0NS_4551-2\0ISO646-NO2\0iso-ir-61\0no2\0csISO61Norwegian2\0videotex-suppl\0iso-ir-"
"70\0csISO70VideotexSupp1\0PT2\0iso-ir-84\0ISO646-PT2\0csISO84Portuguese2\0ES2\0iso-ir-85\0ISO646-"
"ES2\0csISO85Spanish2\0MSZ_7795.3\0iso-ir-86\0ISO646-HU\0hu\0csISO86Hungarian\0JIS_C6226-1983\0iso-ir-"
"87\0x0208\0JIS_X0208-1983\0csISO87JISX0208\0greek7\0iso-ir-88\0csISO88Greek7\0ASMO_449\0ISO_9036\0arabic7\0iso-"
"ir-89\0csISO89ASMO449\0iso-ir-90\0csISO90\0JIS_C6229-1984-a\0iso-ir-91\0jp-ocr-a\0csISO91JISC62291984a\0JIS_"
"C6229-1984-b\0iso-ir-92\0ISO646-JP-OCR-B\0jp-ocr-b\0csISO92JISC62991984b\0JIS_C6229-1984-b-add\0iso-ir-93\0jp-"
"ocr-b-add\0csISO93JIS62291984badd\0JIS_C6229-1984-hand\0iso-ir-94\0jp-ocr-hand\0csISO94JIS62291984hand\0JIS_"
"C6229-1984-hand-add\0iso-ir-95\0jp-ocr-hand-add\0csISO95JIS62291984handadd\0JIS_C6229-1984-kana\0iso-ir-"
"96\0csISO96JISC62291984kana\0ISO_2033-1983\0iso-ir-98\0e13b\0csISO2033\0ANSI_X3.110-1983\0iso-ir-99\0CSA_T500-"
"1983\0NAPLPS\0csISO99NAPLPS\0T.61-7bit\0iso-ir-102\0csISO102T617bit\0T.61-8bit\0T.61\0iso-ir-"
"103\0csISO103T618bit\0ECMA-cyrillic\0iso-ir-111\0KOI8-E\0csISO111ECMACyrillic\0CSA_Z243.4-1985-1\0iso-ir-"
"121\0ISO646-CA\0csa7-1\0csa71\0ca\0csISO121Canadian1\0CSA_Z243.4-1985-2\0iso-ir-122\0ISO646-CA2\0csa7-"
"2\0csa72\0csISO122Canadian2\0CSA_Z243.4-1985-gr\0iso-ir-123\0csISO123CSAZ24341985gr\0ISO_8859-6-"
"E\0csISO88596E\0ISO-8859-6-E\0ISO_8859-6-I\0csISO88596I\0ISO-8859-6-I\0T.101-G2\0iso-ir-"
"128\0csISO128T101G2\0ISO_8859-8-E\0csISO88598E\0ISO-8859-8-E\0ISO_8859-8-I\0csISO88598I\0ISO-8859-8-I\0CSN_"
"369103\0iso-ir-139\0csISO139CSN369103\0JUS_I.B1.002\0iso-ir-141\0ISO646-YU\0js\0yu\0csISO141JUSIB1002\0IEC_P27-"
"1\0iso-ir-143\0csISO143IECP271\0JUS_I.B1.003-serb\0iso-ir-146\0serbian\0csISO146Serbian\0JUS_I.B1.003-"
"mac\0macedonian\0iso-ir-147\0csISO147Macedonian\0greek-ccitt\0iso-ir-150\0csISO150\0csISO150GreekCCITT\0NC_NC00-"
"10:81\0cuba\0iso-ir-151\0ISO646-CU\0csISO151Cuba\0ISO_6937-2-25\0iso-ir-152\0csISO6937Add\0GOST_19768-74\0ST_"
"SEV_358-88\0iso-ir-153\0csISO153GOST1976874\0ISO_8859-supp\0iso-ir-154\0latin1-2-5\0csISO8859Supp\0ISO_10367-"
"box\0iso-ir-155\0csISO10367Box\0latin-lap\0lap\0iso-ir-158\0csISO158Lap\0JIS_X0212-1990\0x0212\0iso-ir-"
"159\0csISO159JISX02121990\0DS_2089\0DS2089\0ISO646-DK\0dk\0csISO646Danish\0us-dk\0csUSDK\0dk-"
"us\0csDKUS\0KSC5636\0ISO646-KR\0csKSC5636\0UNICODE-1-1-UTF-7\0csUnicode11UTF7\0ISO-2022-CN\0csISO2022CN\0ISO-"
"2022-CN-EXT\0csISO2022CNEXT\0UTF-8\0csUTF8\0ISO-8859-13\0csISO885913\0ISO-8859-14\0iso-ir-199\0ISO_8859-14:"
"1998\0ISO_8859-14\0latin8\0iso-celtic\0l8\0csISO885914\0ISO-8859-15\0ISO_8859-15\0Latin-9\0csISO885915\0ISO-"
"8859-16\0iso-ir-226\0ISO_8859-16:2001\0ISO_8859-16\0latin10\0l10\0csISO885916\0GBK\0CP936\0MS936\0windows-"
"936\0csGBK\0GB18030\0csGB18030\0OSD_EBCDIC_DF04_15\0csOSDEBCDICDF0415\0OSD_EBCDIC_DF03_"
"IRV\0csOSDEBCDICDF03IRV\0OSD_EBCDIC_DF04_1\0csOSDEBCDICDF041\0ISO-11548-1\0ISO_11548-1\0ISO_TR_11548-"
"1\0csISO115481\0KZ-1048\0STRK1048-2002\0RK1048\0csKZ1048\0ISO-10646-UCS-2\0csUnicode\0ISO-10646-UCS-"
"4\0csUCS4\0ISO-10646-UCS-Basic\0csUnicodeASCII\0ISO-10646-Unicode-Latin1\0csUnicodeLatin1\0ISO-10646\0ISO-10646-"
"J-1\0csUnicodeJapanese\0ISO-Unicode-IBM-1261\0csUnicodeIBM1261\0ISO-Unicode-IBM-1268\0csUnicodeIBM1268\0ISO-"
"Unicode-IBM-1276\0csUnicodeIBM1276\0ISO-Unicode-IBM-1264\0csUnicodeIBM1264\0ISO-Unicode-IBM-"
"1265\0csUnicodeIBM1265\0UNICODE-1-1\0csUnicode11\0SCSU\0csSCSU\0UTF-7\0csUTF7\0UTF-16BE\0csUTF16BE\0UTF-"
"16LE\0csUTF16LE\0UTF-16\0csUTF16\0CESU-8\0csCESU8\0csCESU-8\0UTF-32\0csUTF32\0UTF-32BE\0csUTF32BE\0UTF-"
"32LE\0csUTF32LE\0BOCU-1\0csBOCU1\0csBOCU-1\0UTF-7-IMAP\0csUTF7IMAP\0ISO-8859-1-Windows-3.0-Latin-"
"1\0csWindows30Latin1\0ISO-8859-1-Windows-3.1-Latin-1\0csWindows31Latin1\0ISO-8859-2-Windows-Latin-"
"2\0csWindows31Latin2\0ISO-8859-9-Windows-Latin-5\0csWindows31Latin5\0hp-roman8\0roman8\0r8\0csHPRoman8\0Adobe-"
"Standard-Encoding\0csAdobeStandardEncoding\0Ventura-US\0csVenturaUS\0Ventura-"
"International\0csVenturaInternational\0DEC-"
"MCS\0dec\0csDECMCS\0IBM850\0cp850\0850\0csPC850Multilingual\0IBM852\0cp852\0852\0csPCp852\0IBM437\0cp437\0"
"437\0csPC8CodePage437\0PC8-Danish-Norwegian\0csPC8DanishNorwegian\0IBM862\0cp862\0862\0csPC862LatinHebrew\0PC8-"
"Turkish\0csPC8Turkish\0IBM-Symbols\0csIBMSymbols\0IBM-Thai\0csIBMThai\0HP-Legal\0csHPLegal\0HP-Pi-"
"font\0csHPPiFont\0HP-Math8\0csHPMath8\0Adobe-Symbol-Encoding\0csHPPSMath\0HP-DeskTop\0csHPDesktop\0Ventura-"
"Math\0csVenturaMath\0Microsoft-Publishing\0csMicrosoftPublishing\0Windows-"
"31J\0csWindows31J\0GB2312\0csGB2312\0Big5\0csBig5\0macintosh\0mac\0csMacintosh\0IBM037\0cp037\0ebcdic-cp-"
"us\0ebcdic-cp-ca\0ebcdic-cp-wt\0ebcdic-cp-nl\0csIBM037\0IBM038\0EBCDIC-"
"INT\0cp038\0csIBM038\0IBM273\0CP273\0csIBM273\0IBM274\0EBCDIC-BE\0CP274\0csIBM274\0IBM275\0EBCDIC-"
"BR\0cp275\0csIBM275\0IBM277\0EBCDIC-CP-DK\0EBCDIC-CP-NO\0csIBM277\0IBM278\0CP278\0ebcdic-cp-fi\0ebcdic-cp-"
"se\0csIBM278\0IBM280\0CP280\0ebcdic-cp-it\0csIBM280\0IBM281\0EBCDIC-JP-"
"E\0cp281\0csIBM281\0IBM284\0CP284\0ebcdic-cp-es\0csIBM284\0IBM285\0CP285\0ebcdic-cp-"
"gb\0csIBM285\0IBM290\0cp290\0EBCDIC-JP-kana\0csIBM290\0IBM297\0cp297\0ebcdic-cp-"
"fr\0csIBM297\0IBM420\0cp420\0ebcdic-cp-ar1\0csIBM420\0IBM423\0cp423\0ebcdic-cp-"
"gr\0csIBM423\0IBM424\0cp424\0ebcdic-cp-he\0csIBM424\0IBM500\0CP500\0ebcdic-cp-be\0ebcdic-cp-"
"ch\0csIBM500\0IBM851\0cp851\0851\0csIBM851\0IBM855\0cp855\0855\0csIBM855\0IBM857\0cp857\0857\0csIBM857\0IBM860\0"
"cp860\0860\0csIBM860\0IBM861\0cp861\0861\0cp-"
"is\0csIBM861\0IBM863\0cp863\0863\0csIBM863\0IBM864\0cp864\0csIBM864\0IBM865\0cp865\0865\0csIBM865\0IBM868\0CP868"
"\0cp-ar\0csIBM868\0IBM869\0cp869\0869\0cp-gr\0csIBM869\0IBM870\0CP870\0ebcdic-cp-roece\0ebcdic-cp-"
"yu\0csIBM870\0IBM871\0CP871\0ebcdic-cp-is\0csIBM871\0IBM880\0cp880\0EBCDIC-"
"Cyrillic\0csIBM880\0IBM891\0cp891\0csIBM891\0IBM903\0cp903\0csIBM903\0IBM904\0cp904\0904\0csIBBM904\0IBM905\0CP9"
"05\0ebcdic-cp-tr\0csIBM905\0IBM918\0CP918\0ebcdic-cp-ar2\0csIBM918\0IBM1026\0CP1026\0csIBM1026\0EBCDIC-AT-"
"DE\0csIBMEBCDICATDE\0EBCDIC-AT-DE-A\0csEBCDICATDEA\0EBCDIC-CA-FR\0csEBCDICCAFR\0EBCDIC-DK-"
"NO\0csEBCDICDKNO\0EBCDIC-DK-NO-A\0csEBCDICDKNOA\0EBCDIC-FI-SE\0csEBCDICFISE\0EBCDIC-FI-SE-"
"A\0csEBCDICFISEA\0EBCDIC-FR\0csEBCDICFR\0EBCDIC-IT\0csEBCDICIT\0EBCDIC-PT\0csEBCDICPT\0EBCDIC-"
"ES\0csEBCDICES\0EBCDIC-ES-A\0csEBCDICESA\0EBCDIC-ES-S\0csEBCDICESS\0EBCDIC-UK\0csEBCDICUK\0EBCDIC-"
"US\0csEBCDICUS\0UNKNOWN-"
"8BIT\0csUnknown8BiT\0MNEMONIC\0csMnemonic\0MNEM\0csMnem\0VISCII\0csVISCII\0VIQR\0csVIQR\0KOI8-R\0csKOI8R\0HZ-GB-"
"2312\0IBM866\0cp866\0866\0csIBM866\0IBM775\0cp775\0csPC775Baltic\0KOI8-"
"U\0csKOI8U\0IBM00858\0CCSID00858\0CP00858\0PC-Multilingual-850+"
"euro\0csIBM00858\0IBM00924\0CCSID00924\0CP00924\0ebcdic-Latin9--"
"euro\0csIBM00924\0IBM01140\0CCSID01140\0CP01140\0ebcdic-us-37+"
"euro\0csIBM01140\0IBM01141\0CCSID01141\0CP01141\0ebcdic-de-273+"
"euro\0csIBM01141\0IBM01142\0CCSID01142\0CP01142\0ebcdic-dk-277+euro\0ebcdic-no-277+"
"euro\0csIBM01142\0IBM01143\0CCSID01143\0CP01143\0ebcdic-fi-278+euro\0ebcdic-se-278+"
"euro\0csIBM01143\0IBM01144\0CCSID01144\0CP01144\0ebcdic-it-280+"
"euro\0csIBM01144\0IBM01145\0CCSID01145\0CP01145\0ebcdic-es-284+"
"euro\0csIBM01145\0IBM01146\0CCSID01146\0CP01146\0ebcdic-gb-285+"
"euro\0csIBM01146\0IBM01147\0CCSID01147\0CP01147\0ebcdic-fr-297+"
"euro\0csIBM01147\0IBM01148\0CCSID01148\0CP01148\0ebcdic-international-500+"
"euro\0csIBM01148\0IBM01149\0CCSID01149\0CP01149\0ebcdic-is-871+euro\0csIBM01149\0Big5-"
"HKSCS\0csBig5HKSCS\0IBM1047\0IBM-1047\0csIBM1047\0PTCP154\0csPTCP154\0PT154\0CP154\0Cyrillic-Asian\0Amiga-"
"1251\0Ami1251\0Amiga1251\0Ami-1251\0csAmiga1251\0KOI7-"
"switched\0csKOI7switched\0BRF\0csBRF\0TSCII\0csTSCII\0CP51932\0csCP51932\0windows-874\0cswindows874\0windows-"
"1250\0cswindows1250\0windows-1251\0cswindows1251\0windows-1252\0cswindows1252\0windows-"
"1253\0cswindows1253\0windows-1254\0cswindows1254\0windows-1255\0cswindows1255\0windows-"
"1256\0cswindows1256\0windows-1257\0cswindows1257\0windows-1258\0cswindows1258\0TIS-620\0csTIS620\0ISO-8859-"
"11\0CP50220\0csCP50220\0";
struct __offset_table {
constexpr static unsigned long long __num_aliases =
std::count(__aliases_string, __aliases_string + sizeof(__aliases_string), '\0') + 1;
unsigned short __table[__num_aliases];
};
static constexpr __offset_table __alias_offsets = [] {
__offset_table __aliases{};
__aliases.__table[0] = sizeof(__aliases_string) - 1;
__aliases.__table[1] = sizeof(__aliases_string) - 1;
__aliases.__table[2] = 0;
unsigned long long __idx = 3;
for (unsigned short __pos = 0; __pos < sizeof(__aliases_string) - 1 && __idx < __offset_table::__num_aliases;
__pos++) {
if (__aliases_string[__pos] == '\0') {
__aliases.__table[__idx++] = __pos + 1;
}
}
return __aliases;
}();
};
template <>
struct hash<text_encoding> {
[[nodiscard]] static size_t operator()(const text_encoding& __enc) noexcept {
return std::hash<std::text_encoding::id>()(__enc.mib());
}
};
template <>
inline constexpr bool ranges::enable_borrowed_range<text_encoding::aliases_view> = true;
_LIBCPP_END_NAMESPACE_STD
# endif // _LIBCPP_STD_VER >= 26
#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
#endif // _LIBCPP_TEXT_ENCODING
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