30 #ifndef _GLIBCXX_CHRONO_IO_H
31 #define _GLIBCXX_CHRONO_IO_H 1
33 #pragma GCC system_header
35 #if __cplusplus >= 202002L
43 namespace std _GLIBCXX_VISIBILITY(default)
45 _GLIBCXX_BEGIN_NAMESPACE_VERSION
60 template<
typename _CharT>
62 _Widen(
const char* __narrow,
const wchar_t* __wide)
64 if constexpr (is_same_v<_CharT, wchar_t>)
69 #define _GLIBCXX_WIDEN_(C, S) ::std::chrono::__detail::_Widen<C>(S, L##S)
70 #define _GLIBCXX_WIDEN(S) _GLIBCXX_WIDEN_(_CharT, S)
74 template<
typename _Period>
76 __units_suffix_misc(
char* __buf,
size_t ) noexcept
81 unsigned __nlen = __tc::__to_chars_len((uintmax_t)_Period::num);
82 __tc::__to_chars_10_impl(__p + 1, __nlen, (uintmax_t)_Period::num);
84 if constexpr (_Period::den != 1)
87 unsigned __dlen = __tc::__to_chars_len((uintmax_t)_Period::den);
88 __tc::__to_chars_10_impl(__p + 1, __dlen, (uintmax_t)_Period::den);
97 template<
typename _Period,
typename _CharT>
99 __units_suffix(
char* __buf,
size_t __n) noexcept
104 #define _GLIBCXX_UNITS_SUFFIX(period, suffix) \
105 if constexpr (is_same_v<_Period, period>) \
106 return _GLIBCXX_WIDEN(suffix); \
109 _GLIBCXX_UNITS_SUFFIX(atto,
"as")
110 _GLIBCXX_UNITS_SUFFIX(femto, "fs")
111 _GLIBCXX_UNITS_SUFFIX(pico, "ps")
112 _GLIBCXX_UNITS_SUFFIX(nano, "ns")
113 _GLIBCXX_UNITS_SUFFIX(milli, "ms")
114 #if _GLIBCXX_USE_ALT_MICROSECONDS_SUFFIX
117 _GLIBCXX_UNITS_SUFFIX(micro,
"\u00b5s")
119 _GLIBCXX_UNITS_SUFFIX(micro,
"us")
121 _GLIBCXX_UNITS_SUFFIX(centi,
"cs")
122 _GLIBCXX_UNITS_SUFFIX(deci, "ds")
123 _GLIBCXX_UNITS_SUFFIX(ratio<1>, "s")
124 _GLIBCXX_UNITS_SUFFIX(deca, "das")
125 _GLIBCXX_UNITS_SUFFIX(hecto, "hs")
126 _GLIBCXX_UNITS_SUFFIX(kilo, "ks")
127 _GLIBCXX_UNITS_SUFFIX(mega, "Ms")
128 _GLIBCXX_UNITS_SUFFIX(giga, "Gs")
129 _GLIBCXX_UNITS_SUFFIX(tera, "Ts")
130 _GLIBCXX_UNITS_SUFFIX(tera, "Ts")
131 _GLIBCXX_UNITS_SUFFIX(peta, "Ps")
132 _GLIBCXX_UNITS_SUFFIX(exa, "Es")
133 _GLIBCXX_UNITS_SUFFIX(ratio<60>, "
min")
134 _GLIBCXX_UNITS_SUFFIX(ratio<3600>, "h")
135 _GLIBCXX_UNITS_SUFFIX(ratio<86400>, "d")
136 #undef _GLIBCXX_UNITS_SUFFIX
137 return __detail::__units_suffix_misc<_Period>(__buf, __n);
146 template<
typename _CharT,
typename _Traits,
147 typename _Rep,
typename _Period>
148 inline basic_ostream<_CharT, _Traits>&
152 using period =
typename _Period::type;
155 __s.flags(__os.flags());
156 __s.imbue(__os.getloc());
157 __s.precision(__os.precision());
159 __s << __detail::__units_suffix<period, _CharT>(__buf,
sizeof(__buf));
168 template<
typename _Duration>
169 struct __local_time_fmt
171 local_time<_Duration> _M_time;
172 const string* _M_abbrev;
176 struct __local_fmt_t;
189 template<
typename _Duration>
190 inline __detail::__local_time_fmt<_Duration>
192 const string* __abbrev =
nullptr,
193 const seconds* __offset_sec =
nullptr)
194 {
return {__time, __abbrev, __offset_sec}; }
202 [[noreturn,__gnu__::__always_inline__]]
204 __no_timezone_available()
205 { __throw_format_error(
"format error: no timezone available for %Z or %z"); }
207 [[noreturn,__gnu__::__always_inline__]]
209 __not_valid_for_duration()
210 { __throw_format_error(
"format error: chrono-format-spec not valid for "
211 "chrono::duration"); }
213 [[noreturn,__gnu__::__always_inline__]]
215 __invalid_chrono_spec()
216 { __throw_format_error(
"format error: chrono-format-spec not valid for "
219 template<
typename _CharT>
220 struct _ChronoSpec : _Spec<_CharT>
222 basic_string_view<_CharT> _M_chrono_specs;
229 _Year = 1, _Month = 2, _Day = 4, _Weekday = 8, _TimeOfDay = 16,
231 _Date = _Year | _Month | _Day | _Weekday,
232 _DateTime = _Date | _TimeOfDay,
233 _ZonedDateTime = _DateTime | _TimeZone,
237 constexpr _ChronoParts
238 operator|(_ChronoParts __x, _ChronoParts __y)
239 {
return static_cast<_ChronoParts
>((int)__x | (
int)__y); }
242 template<
typename _CharT>
243 struct __formatter_chrono
245 using __string_view = basic_string_view<_CharT>;
246 using __string = basic_string<_CharT>;
248 template<
typename _ParseContext>
249 constexpr
typename _ParseContext::iterator
250 _M_parse(_ParseContext& __pc, _ChronoParts __parts)
252 auto __first = __pc.
begin();
253 auto __last = __pc.end();
255 _ChronoSpec<_CharT> __spec{};
257 auto __finalize = [
this, &__spec] {
261 auto __finished = [&] {
262 if (__first == __last || *__first ==
'}')
273 __first = __spec._M_parse_fill_and_align(__first, __last);
277 __first = __spec._M_parse_width(__first, __last, __pc);
281 if (__parts & _ChronoParts::_Duration)
283 __first = __spec._M_parse_precision(__first, __last, __pc);
288 __first = __spec._M_parse_locale(__first, __last);
295 __string_view __str(__first, __last - __first);
296 auto __end = __str.find(
'}');
297 if (__end != __str.npos)
299 __str.remove_suffix(__str.length() - __end);
300 __last = __first + __end;
302 if (__str.find(
'{') != __str.npos)
303 __throw_format_error(
"chrono format error: '{' in chrono-specs");
310 const auto __chrono_specs = __first++;
311 if (*__chrono_specs !=
'%')
312 __throw_format_error(
"chrono format error: no '%' at start of "
319 while (__first != __last)
321 enum _Mods { _Mod_none, _Mod_E, _Mod_O, _Mod_E_O };
322 _Mods __allowed_mods = _Mod_none;
324 _CharT __c = *__first++;
337 __needed = _DateTime;
338 __allowed_mods = _Mod_E;
342 __allowed_mods = _Mod_E;
347 __allowed_mods = _Mod_O;
359 __needed = _TimeOfDay;
360 __allowed_mods = _Mod_O;
363 if (!(__parts & _Duration))
368 __allowed_mods = _Mod_O;
371 __needed = _TimeOfDay;
372 __allowed_mods = _Mod_O;
378 __needed = _TimeOfDay;
382 __needed = _Duration;
385 __needed = _TimeOfDay;
386 __allowed_mods = _Mod_O;
391 __allowed_mods = _Mod_O;
397 __allowed_mods = _Mod_O;
401 __allowed_mods = _Mod_E;
404 __needed = _TimeOfDay;
405 __allowed_mods = _Mod_E;
409 __allowed_mods = _Mod_E_O;
413 __allowed_mods = _Mod_E;
416 __needed = _TimeZone;
417 __allowed_mods = _Mod_E;
420 __needed = _TimeZone;
421 __allowed_mods = _Mod_E_O;
432 __throw_format_error(
"chrono format error: invalid "
433 " specifier in chrono-specs");
436 if ((__mod ==
'E' && !(__allowed_mods & _Mod_E))
437 || __mod ==
'O' && !(__allowed_mods & _Mod_O))
438 __throw_format_error(
"chrono format error: invalid "
439 " modifier in chrono-specs");
442 if ((__parts & __needed) != __needed)
443 __throw_format_error(
"chrono format error: format argument "
444 "does not contain the information "
445 "required by the chrono-specs");
448 size_t __pos = __string_view(__first, __last - __first).find(
'%');
453 if (__pos == __string_view::npos)
459 __first += __pos + 1;
464 if (__conv || __mod != _CharT())
465 __throw_format_error(
"chrono format error: unescaped '%' in "
469 _M_spec._M_chrono_specs = {__chrono_specs, __first - __chrono_specs};
479 template<
typename _Tp,
typename _FormatContext>
480 typename _FormatContext::iterator
481 _M_format(
const _Tp& __t, _FormatContext& __fc,
482 bool __is_neg =
false)
const
484 if constexpr (__is_specialization_of<_Tp, chrono::hh_mm_ss>)
485 __is_neg = __t.is_negative();
486 else if constexpr (!chrono::__is_duration_v<_Tp>)
489 auto __first = _M_spec._M_chrono_specs.begin();
490 const auto __last = _M_spec._M_chrono_specs.end();
491 if (__first == __last)
492 return _M_format_to_ostream(__t, __fc, __is_neg);
494 _Sink_iter<_CharT> __out;
495 __format::_Str_sink<_CharT> __sink;
496 bool __write_direct =
false;
497 if constexpr (is_same_v<
typename _FormatContext::iterator,
500 if (_M_spec._M_width_kind == __format::_WP_none)
503 __write_direct =
true;
506 __out = __sink.out();
509 __out = __sink.out();
511 auto __print_sign = [&__is_neg, &__out] {
514 *__out++ = _S_plus_minus[1];
521 constexpr
const _CharT* __literals = _GLIBCXX_WIDEN(
"\n\t%");
528 _CharT __c = *__first++;
533 __out = _M_a_A(__t,
std::move(__out), __fc, __c ==
'A');
538 __out = _M_b_B(__t,
std::move(__out), __fc, __c ==
'B');
541 __out = _M_c(__t,
std::move(__out), __fc, __mod ==
'E');
546 __out = _M_C_y_Y(__t,
std::move(__out), __fc, __c, __mod);
551 __out = _S_dd_zero_fill((
unsigned)_S_day(__t),
556 __out = _M_D(__t,
std::move(__out), __fc);
559 __out = _M_e(__t,
std::move(__out), __fc, __mod ==
'O');
562 __out = _M_F(__t,
std::move(__out), __fc);
566 __out = _M_g_G(__t,
std::move(__out), __fc, __c ==
'G');
571 __out = _S_dd_zero_fill(_S_hms(__t).
hours().count(),
572 __print_sign(), __fc, __mod ==
'O');
575 __out = _M_I(__t, __print_sign(), __fc, __mod ==
'O');
578 __out = _M_j(__t, __print_sign(), __fc);
583 __out = _S_dd_zero_fill((
unsigned)_S_month(__t),
590 __out = _S_dd_zero_fill(_S_hms(__t).
minutes().count(),
591 __print_sign(), __fc, __mod ==
'O');
594 __out = _M_p(__t,
std::move(__out), __fc);
597 __out = _M_q(__t,
std::move(__out), __fc);
601 if constexpr (chrono::__is_duration_v<_Tp>)
602 __out = std::format_to(__print_sign(), _S_empty_spec,
605 __throw_format_error(
"chrono format error: argument is "
609 __out = _M_r(__t, __print_sign(), __fc);
613 __out = _M_R_T(__t, __print_sign(), __fc, __c ==
'T');
616 __out = _M_S(__t, __print_sign(), __fc, __mod ==
'O');
620 __out = _M_u_w(__t,
std::move(__out), __fc, __c, __mod ==
'O');
625 __out = _M_U_V_W(__t,
std::move(__out), __fc, __c,
629 __out = _M_x(__t,
std::move(__out), __fc, __mod ==
'E');
632 __out = _M_X(__t, __print_sign(), __fc, __mod ==
'E');
635 __out = _M_z(__t,
std::move(__out), __fc, (
bool)__mod);
638 __out = _M_Z(__t,
std::move(__out), __fc);
641 *__out++ = __literals[0];
644 *__out++ = __literals[1];
647 *__out++ = __literals[2];
659 __string_view __str(__first, __last - __first);
660 size_t __pos = __str.find(
'%');
665 if (__pos == __str.npos)
669 __str.remove_suffix(__str.length() - __pos);
670 __first += __pos + 1;
672 __out = __format::__write(
std::move(__out), __str);
675 while (__first != __last);
677 if constexpr (is_same_v<
typename _FormatContext::iterator,
682 auto __str =
std::
move(__sink).get();
683 return __format::__write_padded_as_spec(__str, __str.
size(),
687 _ChronoSpec<_CharT> _M_spec;
691 template<typename _FormatContext>
693 _M_locale(_FormatContext& __fc)
const
695 if (!_M_spec._M_localized)
698 return __fc.locale();
705 template<
typename _Tp,
typename _FormatContext>
706 typename _FormatContext::iterator
707 _M_format_to_ostream(
const _Tp& __t, _FormatContext& __fc,
710 using ::std::chrono::__detail::__utc_leap_second;
711 using ::std::chrono::__detail::__local_time_fmt;
713 if constexpr (__is_specialization_of<_Tp, __local_time_fmt>)
714 return _M_format_to_ostream(__t._M_time, __fc,
false);
717 basic_ostringstream<_CharT> __os;
718 __os.imbue(_M_locale(__fc));
720 if constexpr (__is_specialization_of<_Tp, __utc_leap_second>)
721 __os << __t._M_date <<
' ' << __t._M_time;
724 if (__is_neg) [[unlikely]]
725 __os << _S_plus_minus[1];
730 return __format::__write_padded_as_spec(__str, __str.size(),
735 static constexpr
const _CharT* _S_chars
736 = _GLIBCXX_WIDEN(
"0123456789+-:/ {}");
737 static constexpr
const _CharT* _S_plus_minus = _S_chars + 10;
738 static constexpr _CharT _S_colon = _S_chars[12];
739 static constexpr _CharT _S_slash = _S_chars[13];
740 static constexpr _CharT _S_space = _S_chars[14];
741 static constexpr
const _CharT* _S_empty_spec = _S_chars + 15;
743 template<
typename _Tp,
typename _FormatContext>
744 typename _FormatContext::iterator
745 _M_a_A(
const _Tp& __t,
typename _FormatContext::iterator __out,
746 _FormatContext& __ctx,
bool __full)
const
750 chrono::weekday __wd = _S_weekday(__t);
752 __throw_format_error(
"format error: invalid weekday");
754 locale __loc = _M_locale(__ctx);
755 const auto& __tp = use_facet<__timepunct<_CharT>>(__loc);
756 const _CharT* __days[7];
758 __tp._M_days(__days);
760 __tp._M_days_abbreviated(__days);
761 __string_view __str(__days[__wd.c_encoding()]);
762 return __format::__write(
std::move(__out), __str);
765 template<
typename _Tp,
typename _FormatContext>
766 typename _FormatContext::iterator
767 _M_b_B(
const _Tp& __t,
typename _FormatContext::iterator __out,
768 _FormatContext& __ctx,
bool __full)
const
772 chrono::month __m = _S_month(__t);
774 __throw_format_error(
"format error: invalid month");
775 locale __loc = _M_locale(__ctx);
776 const auto& __tp = use_facet<__timepunct<_CharT>>(__loc);
777 const _CharT* __months[12];
779 __tp._M_months(__months);
781 __tp._M_months_abbreviated(__months);
782 __string_view __str(__months[(
unsigned)__m - 1]);
783 return __format::__write(
std::move(__out), __str);
786 template<
typename _Tp,
typename _FormatContext>
787 typename _FormatContext::iterator
788 _M_c(
const _Tp& __t,
typename _FormatContext::iterator __out,
789 _FormatContext& __ctx,
bool __mod =
false)
const
794 locale __loc = _M_locale(__ctx);
795 const auto& __tp = use_facet<__timepunct<_CharT>>(__loc);
796 const _CharT* __formats[2];
797 __tp._M_date_time_formats(__formats);
798 const _CharT* __rep = __formats[__mod];
800 __rep = _GLIBCXX_WIDEN(
"%a %b %e %H:%M:%S %Y");
801 basic_string<_CharT> __fmt(_S_empty_spec);
802 __fmt.insert(1u, 1u, _S_colon);
803 __fmt.insert(2u, __rep);
804 return std::vformat_to(
std::move(__out), __loc, __fmt,
805 std::make_format_args<_FormatContext>(__t));
808 template<
typename _Tp,
typename _FormatContext>
809 typename _FormatContext::iterator
810 _M_C_y_Y(
const _Tp& __t,
typename _FormatContext::iterator __out,
811 _FormatContext& __ctx,
char __conv,
char __mod = 0)
const
821 chrono::year __y = _S_year(__t);
829 basic_string<_CharT> __s;
831 const bool __is_neg = __yi < 0;
832 __yi = __builtin_abs(__yi);
834 if (__conv ==
'Y' || __conv ==
'C')
837 __s.assign(1, _S_plus_minus[1]);
838 int __ci = __yi / 100;
839 if (__ci >= 100) [[unlikely]]
841 __s += std::format(_S_empty_spec, __ci / 100);
844 __s += _S_two_digits(__ci);
847 if (__conv ==
'Y' || __conv ==
'y')
848 __s += _S_two_digits(__yi % 100);
851 _S_altnum(_M_locale(__ctx), __s, __is_neg);
853 return __format::__write(
std::move(__out), __string_view(__s));
856 template<
typename _Tp,
typename _FormatContext>
857 typename _FormatContext::iterator
858 _M_D(
const _Tp& __t,
typename _FormatContext::iterator __out,
859 _FormatContext&)
const
861 auto __ymd = _S_date(__t);
862 basic_string<_CharT> __s;
863 #if ! _GLIBCXX_USE_CXX11_ABI
866 __s = _S_two_digits((
unsigned)__ymd.month());
868 __s += _S_two_digits((
unsigned)__ymd.day());
870 __s += _S_two_digits(__builtin_abs((
int)__ymd.year()) % 100);
871 return __format::__write(
std::move(__out), __string_view(__s));
874 template<
typename _Tp,
typename _FormatContext>
875 typename _FormatContext::iterator
876 _M_e(
const _Tp& __t,
typename _FormatContext::iterator __out,
877 _FormatContext& __ctx,
bool __mod =
false)
const
881 chrono::day __d = _S_day(__t);
882 unsigned __i = (unsigned)__d;
883 auto __sv = _S_two_digits(__i);
884 basic_string<_CharT> __s;
886 __sv = _S_altnum(_M_locale(__ctx), __s.assign(__sv));
888 __sv = __s = {_S_space, __sv[1]};
889 return __format::__write(
std::move(__out), __sv);
892 template<
typename _Tp,
typename _FormatContext>
893 typename _FormatContext::iterator
894 _M_F(
const _Tp& __t,
typename _FormatContext::iterator __out,
895 _FormatContext&)
const
897 auto __ymd = _S_date(__t);
898 basic_string<_CharT> __s;
899 #if ! _GLIBCXX_USE_CXX11_ABI
902 __s += std::format(_GLIBCXX_WIDEN(
"{:04d}- - "), (
int)__ymd.year());
903 auto __sv = _S_two_digits((
unsigned)__ymd.month());
904 __s[__s.size() - 5] = __sv[0];
905 __s[__s.size() - 4] = __sv[1];
906 __sv = _S_two_digits((
unsigned)__ymd.day());
907 __s[__s.size() - 2] = __sv[0];
908 __s[__s.size() - 1] = __sv[1];
910 return __format::__write(
std::move(__out), __sv);
913 template<
typename _Tp,
typename _FormatContext>
914 typename _FormatContext::iterator
915 _M_g_G(
const _Tp& __t,
typename _FormatContext::iterator __out,
916 _FormatContext& __ctx,
bool __full)
const
920 using namespace chrono;
921 auto __d = _S_days(__t);
923 __d -= (weekday(__d) - Monday) -
days(3);
925 year __y = year_month_day(__d).year();
926 return _M_C_y_Y(__y,
std::move(__out), __ctx,
"yY"[__full]);
929 template<
typename _Tp,
typename _FormatContext>
930 typename _FormatContext::iterator
931 _M_I(
const _Tp& __t,
typename _FormatContext::iterator __out,
932 _FormatContext& __ctx,
bool __mod =
false)
const
934 auto __hms = _S_hms(__t);
935 int __i = __hms.hours().count();
940 auto __sv = _S_two_digits(__i);
941 basic_string<_CharT> __s;
943 __sv = _S_altnum(_M_locale(__ctx), __s.assign(__sv));
944 return __format::__write(
std::move(__out), __sv);
947 template<
typename _Tp,
typename _FormatContext>
948 typename _FormatContext::iterator
949 _M_j(
const _Tp& __t,
typename _FormatContext::iterator __out,
950 _FormatContext& __ctx)
const
952 if constexpr (chrono::__is_duration_v<_Tp>)
955 unsigned __d = chrono::duration_cast<chrono::days>(__t).count();
956 return std::format_to(
std::move(__out), _S_empty_spec, __d);
961 using namespace chrono;
962 auto __day = _S_days(__t);
963 auto __ymd = _S_date(__t);
967 if constexpr (is_same_v<
typename decltype(__day)::clock, local_t>)
968 __d = __day - local_days(__ymd.year()/January/0);
970 __d = __day - sys_days(__ymd.year()/January/0);
971 return
std::format_to(
std::
move(__out), _GLIBCXX_WIDEN("{:03d}
"),
976 template<typename _Tp, typename _FormatContext>
977 typename _FormatContext::iterator
978 _M_p(const _Tp& __t, typename _FormatContext::iterator __out,
979 _FormatContext& __ctx) const
981 // %p The locale's equivalent of the AM/PM designations.
982 auto __hms = _S_hms(__t);
983 locale __loc = _M_locale(__ctx);
984 const auto& __tp = use_facet<__timepunct<_CharT>>(__loc);
985 const _CharT* __ampm[2];
986 __tp._M_am_pm(__ampm);
987 return std::format_to(std::move(__out), _S_empty_spec,
988 __ampm[__hms.hours().count() >= 12]);
991 template<typename _Tp, typename _FormatContext>
992 typename _FormatContext::iterator
993 _M_q(const _Tp& __t, typename _FormatContext::iterator __out,
994 _FormatContext& __ctx) const
996 // %q The duration's unit suffix
997 if constexpr (!chrono::__is_duration_v<_Tp>)
998 __throw_format_error("format error: argument is not a duration
");
1001 using period = typename _Tp::period;
1002 char __buf[sizeof("[/]s
") + 2 * numeric_limits<intmax_t>::digits10];
1003 constexpr size_t __n = sizeof(__buf);
1004 auto __s = chrono::__detail::__units_suffix<period, _CharT>(__buf,
1006 if constexpr (is_same_v<decltype(__s), const _CharT*>)
1007 return std::format_to(std::move(__out), _S_empty_spec, __s);
1010 // Suffix was written to __buf as narrow string.
1012 size_t __len = __builtin_strlen(__buf);
1013 locale __loc = _M_locale(__ctx);
1014 auto& __ct = use_facet<ctype<_CharT>>(__loc);
1015 __ct.widen(__buf, __len, __wbuf);
1017 return std::format_to(std::move(__out), _S_empty_spec,
1023 template<typename _Tp, typename _FormatContext>
1024 typename _FormatContext::iterator
1025 _M_r(const _Tp& __t, typename _FormatContext::iterator __out,
1026 _FormatContext& __ctx) const
1028 // %r locale's 12-hour clock time.
1029 locale __loc = _M_locale(__ctx);
1030 const auto& __tp = use_facet<__timepunct<_CharT>>(__loc);
1031 const _CharT* __ampm_fmt;
1032 __tp._M_am_pm_format(&__ampm_fmt);
1033 basic_string<_CharT> __fmt(_S_empty_spec);
1034 __fmt.insert(1u, 1u, _S_colon);
1035 __fmt.insert(2u, __ampm_fmt);
1036 return std::vformat_to(std::move(__out), __fmt,
1037 std::make_format_args<_FormatContext>(__t));
1040 template<typename _Tp, typename _FormatContext>
1041 typename _FormatContext::iterator
1042 _M_R_T(const _Tp& __t, typename _FormatContext::iterator __out,
1043 _FormatContext& __ctx, bool __secs) const
1045 // %R Equivalent to %H:%M
1046 // %T Equivalent to %H:%M:%S
1047 auto __hms = _S_hms(__t);
1049 basic_string<_CharT> __s;
1050 #if ! _GLIBCXX_USE_CXX11_ABI
1053 __s = std::format(_GLIBCXX_WIDEN("{:02d}:00
"), __hms.hours().count());
1054 auto __sv = _S_two_digits(__hms.minutes().count());
1055 __s[__s.size() - 2] = __sv[0];
1056 __s[__s.size() - 1] = __sv[1];
1058 __out = __format::__write(std::move(__out), __sv);
1061 *__out++ = _S_colon;
1062 __out = _M_S(__hms, std::move(__out), __ctx);
1067 template<typename _Tp, typename _FormatContext>
1068 typename _FormatContext::iterator
1069 _M_S(const _Tp& __t, typename _FormatContext::iterator __out,
1070 _FormatContext& __ctx, bool __mod = false) const
1072 // %S Seconds as a decimal number.
1073 // %OS (TODO) The locale's alternative representation.
1074 auto __hms = _S_hms(__t);
1075 __out = _S_dd_zero_fill(__hms.seconds().count(),
1076 std::move(__out), __ctx, __mod);
1077 using rep = typename decltype(__hms)::precision::rep;
1078 if constexpr (__hms.fractional_width != 0)
1080 locale __loc = _M_locale(__ctx);
1081 auto __ss = __hms.subseconds();
1082 if constexpr (is_floating_point_v<rep>)
1084 __out = std::format_to(__loc, std::move(__out),
1085 _GLIBCXX_WIDEN("{:.{}Lg}
"),
1087 __hms.fractional_width);
1089 else if constexpr (is_integral_v<rep>)
1092 = use_facet<numpunct<_CharT>>(__loc);
1093 __out = std::format_to(std::move(__out),
1094 _GLIBCXX_WIDEN("{}{:0{}}
"),
1095 __np.decimal_point(),
1097 __hms.fractional_width);
1102 = use_facet<numpunct<_CharT>>(__loc);
1103 *__out++ = __np.decimal_point();
1104 auto __str = std::format(_S_empty_spec, __ss.count());
1105 __out = std::format_to(_GLIBCXX_WIDEN("{:0>{}s}
"),
1107 __hms.fractional_width);
1113 // %t handled in _M_format
1115 template<typename _Tp, typename _FormatContext>
1116 typename _FormatContext::iterator
1117 _M_u_w(const _Tp& __t, typename _FormatContext::iterator __out,
1118 _FormatContext& __ctx, _CharT __conv, bool __mod = false) const
1120 // %u ISO weekday as a decimal number (1-7), where Monday is 1.
1121 // %Ou Locale's alternative numeric rep.
1122 // %w Weekday as a decimal number (0-6), where Sunday is 0.
1123 // %Ow Locale's alternative numeric rep.
1124 chrono::weekday __wd = _S_weekday(__t);
1125 unsigned __wdi = __conv == 'u' ? __wd.iso_encoding()
1126 : __wd.c_encoding();
1127 basic_string<_CharT> __s(1, _S_digit(__wdi));
1129 _S_altnum(_M_locale(__ctx), __s);
1130 return __format::__write(std::move(__out), __string_view(__s));
1134 template<typename _Tp, typename _FormatContext>
1135 typename _FormatContext::iterator
1136 _M_U_V_W(const _Tp& __t, typename _FormatContext::iterator __out,
1137 _FormatContext& __ctx, _CharT __conv, bool __mod = false) const
1139 // %U Week number of the year as a decimal number, from first Sunday.
1140 // %OU Locale's alternative numeric rep.
1141 // %V ISO week-based week number as a decimal number.
1142 // %OV Locale's alternative numeric rep.
1143 // %W Week number of the year as a decimal number, from first Monday.
1144 // %OW Locale's alternative numeric rep.
1145 using namespace chrono;
1146 auto __d = _S_days(__t);
1147 using _TDays = decltype(__d); // Either sys_days or local_days.
1149 _TDays __first; // First day of week 1.
1150 if (__conv == 'V') // W01 begins on Monday before first Thursday.
1152 // Move to nearest Thursday:
1153 __d -= (weekday(__d) - Monday) - days(3);
1154 // ISO week of __t is number of weeks since January 1 of the
1155 // same year as that nearest Thursday.
1156 __first = _TDays(year_month_day(__d).year()/January/1);
1161 if constexpr (requires { __t.year(); })
1164 __y = year_month_day(__d).year();
1165 const weekday __weekstart = __conv == 'U' ? Sunday : Monday;
1166 __first = _TDays(__y/January/__weekstart[1]);
1168 auto __weeks = chrono::floor<weeks>(__d - __first);
1169 __string_view __sv = _S_two_digits(__weeks.count() + 1);
1170 basic_string<_CharT> __s;
1172 __sv = _S_altnum(_M_locale(__ctx), __s.assign(__sv));
1173 return __format::__write(std::move(__out), __sv);
1176 template<typename _Tp, typename _FormatContext>
1177 typename _FormatContext::iterator
1178 _M_x(const _Tp& __t, typename _FormatContext::iterator __out,
1179 _FormatContext& __ctx, bool __mod = false) const
1181 // %x Locale's date rep
1182 // %Ex Locale's alternative date representation.
1183 locale __loc = _M_locale(__ctx);
1184 const auto& __tp = use_facet<__timepunct<_CharT>>(__loc);
1185 const _CharT* __date_reps[2];
1186 __tp._M_date_formats(__date_reps);
1187 const _CharT* __rep = __date_reps[__mod];
1189 return _M_D(__t, std::move(__out), __ctx);
1191 basic_string<_CharT> __fmt(_S_empty_spec);
1192 __fmt.insert(1u, 1u, _S_colon);
1193 __fmt.insert(2u, __rep);
1194 return std::vformat_to(std::move(__out), __fmt,
1195 std::make_format_args<_FormatContext>(__t));
1198 template<typename _Tp, typename _FormatContext>
1199 typename _FormatContext::iterator
1200 _M_X(const _Tp& __t, typename _FormatContext::iterator __out,
1201 _FormatContext& __ctx, bool __mod = false) const
1203 // %X Locale's time rep
1204 // %EX Locale's alternative time representation.
1205 locale __loc = _M_locale(__ctx);
1206 const auto& __tp = use_facet<__timepunct<_CharT>>(__loc);
1207 const _CharT* __time_reps[2];
1208 __tp._M_time_formats(__time_reps);
1209 const _CharT* __rep = __time_reps[__mod];
1211 return _M_R_T(__t, std::move(__out), __ctx, true);
1213 basic_string<_CharT> __fmt(_S_empty_spec);
1214 __fmt.insert(1u, 1u, _S_colon);
1215 __fmt.insert(2u, __rep);
1216 return std::vformat_to(std::move(__out), __fmt,
1217 std::make_format_args<_FormatContext>(__t));
1220 template<typename _Tp, typename _FormatContext>
1221 typename _FormatContext::iterator
1222 _M_z(const _Tp& __t, typename _FormatContext::iterator __out,
1223 _FormatContext& __ctx, bool __mod = false) const
1225 using ::std::chrono::__detail::__utc_leap_second;
1226 using ::std::chrono::__detail::__local_time_fmt;
1228 auto __utc = __mod ? __string_view(_GLIBCXX_WIDEN("+00:00
"), 6)
1229 : __string_view(_GLIBCXX_WIDEN("+0000
"), 5);
1231 if constexpr (chrono::__is_time_point_v<_Tp>)
1233 if constexpr (is_same_v<typename _Tp::clock,
1234 chrono::system_clock>)
1235 return __format::__write(std::move(__out), __utc);
1237 else if constexpr (__is_specialization_of<_Tp, __local_time_fmt>)
1239 if (__t._M_offset_sec)
1242 basic_string<_CharT> __s;
1243 if (*__t._M_offset_sec != 0s)
1245 chrono:: hh_mm_ss __hms(*__t._M_offset_sec);
1246 __s = _S_plus_minus[__hms.is_negative()];
1247 __s += _S_two_digits(__hms.hours().count());
1250 __s += _S_two_digits(__hms.minutes().count());
1253 return __format::__write(std::move(__out), __sv);
1256 else if constexpr (__is_specialization_of<_Tp, __utc_leap_second>)
1257 return __format::__write(std::move(__out), __utc);
1259 __no_timezone_available();
1262 template<typename _Tp, typename _FormatContext>
1263 typename _FormatContext::iterator
1264 _M_Z(const _Tp& __t, typename _FormatContext::iterator __out,
1265 _FormatContext& __ctx) const
1267 using ::std::chrono::__detail::__utc_leap_second;
1268 using ::std::chrono::__detail::__local_time_fmt;
1270 __string_view __utc(_GLIBCXX_WIDEN("UTC
"), 3);
1271 if constexpr (chrono::__is_time_point_v<_Tp>)
1273 if constexpr (is_same_v<typename _Tp::clock,
1274 chrono::system_clock>)
1275 return __format::__write(std::move(__out), __utc);
1277 else if constexpr (__is_specialization_of<_Tp, __local_time_fmt>)
1281 __string_view __wsv;
1282 if constexpr (is_same_v<_CharT, char>)
1283 __wsv = *__t._M_abbrev;
1286 string_view __sv = *__t._M_abbrev;
1287 basic_string<_CharT> __ws(__sv.size());
1288 auto& __ct = use_facet<ctype<_CharT>>(_M_locale(__ctx));
1289 __ct.widen(__sv.data(), __sv.size(), __ws.data());
1292 return __format::__write(std::move(__out), __wsv);
1295 else if constexpr (__is_specialization_of<_Tp, __utc_leap_second>)
1296 return __format::__write(std::move(__out), __utc);
1298 __no_timezone_available();
1301 // %% handled in _M_format
1303 // A single digit character in the range '0'..'9'.
1305 _S_digit(int __n) noexcept
1307 // Extra 9s avoid past-the-end read on bad input.
1308 return _GLIBCXX_WIDEN("0123456789999999
")[__n & 0xf];
1311 // A string view of two digit characters, "00
".."99
".
1312 static basic_string_view<_CharT>
1313 _S_two_digits(int __n) noexcept
1316 _GLIBCXX_WIDEN("0001020304050607080910111213141516171819
"
1317 "2021222324252627282930313233343536373839
"
1318 "4041424344454647484950515253545556575859
"
1319 "6061626364656667686970717273747576777879
"
1320 "8081828384858687888990919293949596979899
"
1321 "9999999999999999999999999999999999999999
"
1322 "9999999999999999
") + 2 * (__n & 0x7f),
1327 // Convert a numeric string to the locale's alternative numeric symbols.
1328 static basic_string_view<_CharT>
1329 _S_altnum(const locale& __loc, basic_string<_CharT>& __s,
1330 bool __is_neg = false)
1332 if (__loc == locale::classic())
1335 #if 0 // TODO how can we access numpunct_cache?! Need to go via std::time_put?
1336 auto& __np = use_facet<__numpunct_cache<_CharT>>(__loc);
1337 auto __nums = __np._M_atoms_out; // alts for "-+xX01234...
"
1340 __nums += 4; // now points to alternate digits
1341 for (int __i = __is_neg; __i < __s.size(); ++__i)
1342 __s[__i] = __nums[__s[__i] - '0'];
1347 // Write two digits, zero-filled.
1348 template<typename _FormatContext>
1349 typename _FormatContext::iterator
1350 _S_dd_zero_fill(int __val, typename _FormatContext::iterator __out,
1351 _FormatContext& __ctx, bool __alt_num) const
1353 auto __sv = _S_two_digits(__val);
1354 basic_string<_CharT> __s;
1356 __sv = _S_altnum(_M_locale(__ctx), __s.assign(__sv));
1357 return __format::__write(std::move(__out), __sv);
1360 // Accessors for the components of chrono types:
1362 // Returns a hh_mm_ss.
1363 template<typename _Tp>
1364 static decltype(auto)
1365 _S_hms(const _Tp& __t)
1367 using ::std::chrono::__detail::__utc_leap_second;
1368 using ::std::chrono::__detail::__local_time_fmt;
1370 if constexpr (__is_specialization_of<_Tp, chrono::hh_mm_ss>)
1372 else if constexpr (__is_specialization_of<_Tp, __utc_leap_second>)
1374 else if constexpr (chrono::__is_duration_v<_Tp>)
1375 return chrono::hh_mm_ss<_Tp>(__t);
1376 else if constexpr (chrono::__is_time_point_v<_Tp>)
1377 return chrono::hh_mm_ss(__t - chrono::floor<chrono::days>(__t));
1378 else if constexpr (__is_specialization_of<_Tp, __local_time_fmt>)
1379 return _S_hms(__t._M_time);
1382 __invalid_chrono_spec();
1383 return chrono::hh_mm_ss<chrono::seconds>();
1387 // Returns a sys_days or local_days.
1388 template<typename _Tp>
1390 _S_days(const _Tp& __t)
1392 using namespace chrono;
1393 using ::std::chrono::__detail::__utc_leap_second;
1394 using ::std::chrono::__detail::__local_time_fmt;
1396 if constexpr (__is_time_point_v<_Tp>)
1397 return chrono::floor<days>(__t);
1398 else if constexpr (__is_specialization_of<_Tp, __utc_leap_second>)
1400 else if constexpr (__is_specialization_of<_Tp, __local_time_fmt>)
1401 return chrono::floor<days>(__t._M_time);
1402 else if constexpr (is_same_v<_Tp, year_month_day>
1403 || is_same_v<_Tp, year_month_day_last>
1404 || is_same_v<_Tp, year_month_weekday>
1405 || is_same_v<_Tp, year_month_weekday_last>)
1406 return sys_days(__t);
1409 if constexpr (__is_duration_v<_Tp>)
1410 __not_valid_for_duration();
1412 __invalid_chrono_spec();
1413 return chrono::sys_days();
1417 // Returns a year_month_day.
1418 template<typename _Tp>
1419 static chrono::year_month_day
1420 _S_date(const _Tp& __t)
1422 if constexpr (is_same_v<_Tp, chrono::year_month_day>)
1425 return chrono::year_month_day(_S_days(__t));
1428 template<typename _Tp>
1430 _S_day(const _Tp& __t)
1432 using namespace chrono;
1434 if constexpr (is_same_v<_Tp, day>)
1436 else if constexpr (requires { __t.day(); })
1439 return _S_date(__t).day();
1442 template<typename _Tp>
1443 static chrono::month
1444 _S_month(const _Tp& __t)
1446 using namespace chrono;
1448 if constexpr (is_same_v<_Tp, month>)
1450 else if constexpr (requires { __t.month(); })
1453 return _S_date(__t).month();
1456 template<typename _Tp>
1458 _S_year(const _Tp& __t)
1460 using namespace chrono;
1462 if constexpr (is_same_v<_Tp, year>)
1464 else if constexpr (requires { __t.year(); })
1467 return _S_date(__t).year();
1470 template<typename _Tp>
1471 static chrono::weekday
1472 _S_weekday(const _Tp& __t)
1474 using namespace ::std::chrono;
1475 using ::std::chrono::__detail::__local_time_fmt;
1477 if constexpr (is_same_v<_Tp, weekday>)
1479 else if constexpr (requires { __t.weekday(); })
1480 return __t.weekday();
1481 else if constexpr (is_same_v<_Tp, month_weekday>)
1482 return __t.weekday_indexed().weekday();
1483 else if constexpr (is_same_v<_Tp, month_weekday_last>)
1484 return __t.weekday_last().weekday();
1486 return weekday(_S_days(__t));
1490 } // namespace __format
1493 template<typename _Rep, typename _Period, typename _CharT>
1494 struct formatter<chrono::duration<_Rep, _Period>, _CharT>
1496 constexpr typename basic_format_parse_context<_CharT>::iterator
1497 parse(basic_format_parse_context<_CharT>& __pc)
1499 using namespace __format;
1500 auto __it = _M_f._M_parse(__pc, _Duration|_TimeOfDay);
1501 if constexpr (!is_floating_point_v<_Rep>)
1502 if (_M_f._M_spec._M_prec_kind != __format::_WP_none)
1503 __throw_format_error("format error: invalid precision
for duration
");
1507 template<typename _Out>
1508 typename basic_format_context<_Out, _CharT>::iterator
1509 format(const chrono::duration<_Rep, _Period>& __d,
1510 basic_format_context<_Out, _CharT>& __fc) const
1512 return _M_f._M_format(chrono::abs(__d), __fc, __d < __d.zero());
1516 __format::__formatter_chrono<_CharT> _M_f;
1519 template<typename _CharT>
1520 struct formatter<chrono::day, _CharT>
1522 template<typename _ParseContext>
1523 constexpr typename _ParseContext::iterator
1524 parse(_ParseContext& __pc)
1525 { return _M_f._M_parse(__pc, __format::_Day); }
1527 template<typename _FormatContext>
1528 typename _FormatContext::iterator
1529 format(const chrono::day& __t, _FormatContext& __fc) const
1530 { return _M_f._M_format(__t, __fc); }
1533 __format::__formatter_chrono<_CharT> _M_f;
1536 template<typename _CharT>
1537 struct formatter<chrono::month, _CharT>
1539 template<typename _ParseContext>
1540 constexpr typename _ParseContext::iterator
1541 parse(_ParseContext& __pc)
1542 { return _M_f._M_parse(__pc, __format::_Month); }
1544 template<typename _FormatContext>
1545 typename _FormatContext::iterator
1546 format(const chrono::month& __t, _FormatContext& __fc) const
1547 { return _M_f._M_format(__t, __fc); }
1550 __format::__formatter_chrono<_CharT> _M_f;
1553 template<typename _CharT>
1554 struct formatter<chrono::year, _CharT>
1556 template<typename _ParseContext>
1557 constexpr typename _ParseContext::iterator
1558 parse(_ParseContext& __pc)
1559 { return _M_f._M_parse(__pc, __format::_Year); }
1561 template<typename _FormatContext>
1562 typename _FormatContext::iterator
1563 format(const chrono::year& __t, _FormatContext& __fc) const
1564 { return _M_f._M_format(__t, __fc); }
1567 __format::__formatter_chrono<_CharT> _M_f;
1570 template<typename _CharT>
1571 struct formatter<chrono::weekday, _CharT>
1573 template<typename _ParseContext>
1574 constexpr typename _ParseContext::iterator
1575 parse(_ParseContext& __pc)
1576 { return _M_f._M_parse(__pc, __format::_Weekday); }
1578 template<typename _FormatContext>
1579 typename _FormatContext::iterator
1580 format(const chrono::weekday& __t, _FormatContext& __fc) const
1581 { return _M_f._M_format(__t, __fc); }
1584 __format::__formatter_chrono<_CharT> _M_f;
1587 template<typename _CharT>
1588 struct formatter<chrono::weekday_indexed, _CharT>
1590 template<typename _ParseContext>
1591 constexpr typename _ParseContext::iterator
1592 parse(_ParseContext& __pc)
1593 { return _M_f._M_parse(__pc, __format::_Weekday); }
1595 template<typename _FormatContext>
1596 typename _FormatContext::iterator
1597 format(const chrono::weekday_indexed& __t, _FormatContext& __fc) const
1598 { return _M_f._M_format(__t, __fc); }
1601 __format::__formatter_chrono<_CharT> _M_f;
1604 template<typename _CharT>
1605 struct formatter<chrono::weekday_last, _CharT>
1607 template<typename _ParseContext>
1608 constexpr typename _ParseContext::iterator
1609 parse(_ParseContext& __pc)
1610 { return _M_f._M_parse(__pc, __format::_Weekday); }
1612 template<typename _FormatContext>
1613 typename _FormatContext::iterator
1614 format(const chrono::weekday_last& __t, _FormatContext& __fc) const
1615 { return _M_f._M_format(__t, __fc); }
1618 __format::__formatter_chrono<_CharT> _M_f;
1621 template<typename _CharT>
1622 struct formatter<chrono::month_day, _CharT>
1624 template<typename _ParseContext>
1625 constexpr typename _ParseContext::iterator
1626 parse(_ParseContext& __pc)
1627 { return _M_f._M_parse(__pc, __format::_Month|__format::_Day); }
1629 template<typename _FormatContext>
1630 typename _FormatContext::iterator
1631 format(const chrono::month_day& __t, _FormatContext& __fc) const
1632 { return _M_f._M_format(__t, __fc); }
1635 __format::__formatter_chrono<_CharT> _M_f;
1638 template<typename _CharT>
1639 struct formatter<chrono::month_day_last, _CharT>
1641 template<typename _ParseContext>
1642 constexpr typename _ParseContext::iterator
1643 parse(_ParseContext& __pc)
1644 { return _M_f._M_parse(__pc, __format::_Month|__format::_Day); }
1646 template<typename _FormatContext>
1647 typename _FormatContext::iterator
1648 format(const chrono::month_day_last& __t, _FormatContext& __fc) const
1649 { return _M_f._M_format(__t, __fc); }
1652 __format::__formatter_chrono<_CharT> _M_f;
1655 template<typename _CharT>
1656 struct formatter<chrono::month_weekday, _CharT>
1658 template<typename _ParseContext>
1659 constexpr typename _ParseContext::iterator
1660 parse(_ParseContext& __pc)
1661 { return _M_f._M_parse(__pc, __format::_Month|__format::_Weekday); }
1663 template<typename _FormatContext>
1664 typename _FormatContext::iterator
1665 format(const chrono::month_weekday& __t, _FormatContext& __fc) const
1666 { return _M_f._M_format(__t, __fc); }
1669 __format::__formatter_chrono<_CharT> _M_f;
1672 template<typename _CharT>
1673 struct formatter<chrono::month_weekday_last, _CharT>
1675 template<typename _ParseContext>
1676 constexpr typename _ParseContext::iterator
1677 parse(_ParseContext& __pc)
1678 { return _M_f._M_parse(__pc, __format::_Month|__format::_Weekday); }
1680 template<typename _FormatContext>
1681 typename _FormatContext::iterator
1682 format(const chrono::month_weekday_last& __t,
1683 _FormatContext& __fc) const
1684 { return _M_f._M_format(__t, __fc); }
1687 __format::__formatter_chrono<_CharT> _M_f;
1690 template<typename _CharT>
1691 struct formatter<chrono::year_month, _CharT>
1693 template<typename _ParseContext>
1694 constexpr typename _ParseContext::iterator
1695 parse(_ParseContext& __pc)
1696 { return _M_f._M_parse(__pc, __format::_Year|__format::_Month); }
1698 template<typename _FormatContext>
1699 typename _FormatContext::iterator
1700 format(const chrono::year_month& __t, _FormatContext& __fc) const
1701 { return _M_f._M_format(__t, __fc); }
1704 __format::__formatter_chrono<_CharT> _M_f;
1707 template<typename _CharT>
1708 struct formatter<chrono::year_month_day, _CharT>
1710 template<typename _ParseContext>
1711 constexpr typename _ParseContext::iterator
1712 parse(_ParseContext& __pc)
1713 { return _M_f._M_parse(__pc, __format::_Date); }
1715 template<typename _FormatContext>
1716 typename _FormatContext::iterator
1717 format(const chrono::year_month_day& __t, _FormatContext& __fc) const
1718 { return _M_f._M_format(__t, __fc); }
1721 __format::__formatter_chrono<_CharT> _M_f;
1724 template<typename _CharT>
1725 struct formatter<chrono::year_month_day_last, _CharT>
1727 template<typename _ParseContext>
1728 constexpr typename _ParseContext::iterator
1729 parse(_ParseContext& __pc)
1730 { return _M_f._M_parse(__pc, __format::_Date); }
1732 template<typename _FormatContext>
1733 typename _FormatContext::iterator
1734 format(const chrono::year_month_day_last& __t,
1735 _FormatContext& __fc) const
1736 { return _M_f._M_format(__t, __fc); }
1739 __format::__formatter_chrono<_CharT> _M_f;
1742 template<typename _CharT>
1743 struct formatter<chrono::year_month_weekday, _CharT>
1745 template<typename _ParseContext>
1746 constexpr typename _ParseContext::iterator
1747 parse(_ParseContext& __pc)
1748 { return _M_f._M_parse(__pc, __format::_Date); }
1750 template<typename _FormatContext>
1751 typename _FormatContext::iterator
1752 format(const chrono::year_month_weekday& __t,
1753 _FormatContext& __fc) const
1754 { return _M_f._M_format(__t, __fc); }
1757 __format::__formatter_chrono<_CharT> _M_f;
1760 template<typename _CharT>
1761 struct formatter<chrono::year_month_weekday_last, _CharT>
1763 template<typename _ParseContext>
1764 constexpr typename _ParseContext::iterator
1765 parse(_ParseContext& __pc)
1766 { return _M_f._M_parse(__pc, __format::_Date); }
1768 template<typename _FormatContext>
1769 typename _FormatContext::iterator
1770 format(const chrono::year_month_weekday_last& __t,
1771 _FormatContext& __fc) const
1772 { return _M_f._M_format(__t, __fc); }
1775 __format::__formatter_chrono<_CharT> _M_f;
1778 template<typename _Rep, typename _Period, typename _CharT>
1779 struct formatter<chrono::hh_mm_ss<chrono::duration<_Rep, _Period>>, _CharT>
1781 template<typename _ParseContext>
1782 constexpr typename _ParseContext::iterator
1783 parse(_ParseContext& __pc)
1784 { return _M_f._M_parse(__pc, __format::_TimeOfDay); }
1786 template<typename _FormatContext>
1787 typename _FormatContext::iterator
1788 format(const chrono::hh_mm_ss<chrono::duration<_Rep, _Period>>& __t,
1789 _FormatContext& __fc) const
1790 { return _M_f._M_format(__t, __fc); }
1793 __format::__formatter_chrono<_CharT> _M_f;
1796 #if _GLIBCXX_USE_CXX11_ABI || ! _GLIBCXX_USE_DUAL_ABI
1797 template<typename _CharT>
1798 struct formatter<chrono::sys_info, _CharT>
1800 template<typename _ParseContext>
1801 constexpr typename _ParseContext::iterator
1802 parse(_ParseContext& __pc)
1803 { return _M_f._M_parse(__pc, __format::_ChronoParts{}); }
1805 template<typename _FormatContext>
1806 typename _FormatContext::iterator
1807 format(const chrono::sys_info& __i, _FormatContext& __fc) const
1808 { return _M_f._M_format(__i, __fc); }
1811 __format::__formatter_chrono<_CharT> _M_f;
1814 template<typename _CharT>
1815 struct formatter<chrono::local_info, _CharT>
1817 template<typename _ParseContext>
1818 constexpr typename _ParseContext::iterator
1819 parse(_ParseContext& __pc)
1820 { return _M_f._M_parse(__pc, __format::_ChronoParts{}); }
1822 template<typename _FormatContext>
1823 typename _FormatContext::iterator
1824 format(const chrono::local_info& __i, _FormatContext& __fc) const
1825 { return _M_f._M_format(__i, __fc); }
1828 __format::__formatter_chrono<_CharT> _M_f;
1832 template<typename _Duration, typename _CharT>
1833 struct formatter<chrono::sys_time<_Duration>, _CharT>
1835 template<typename _ParseContext>
1836 constexpr typename _ParseContext::iterator
1837 parse(_ParseContext& __pc)
1838 { return _M_f._M_parse(__pc, __format::_ZonedDateTime); }
1840 template<typename _FormatContext>
1841 typename _FormatContext::iterator
1842 format(const chrono::sys_time<_Duration>& __t,
1843 _FormatContext& __fc) const
1844 { return _M_f._M_format(__t, __fc); }
1847 __format::__formatter_chrono<_CharT> _M_f;
1850 template<typename _Duration, typename _CharT>
1851 struct formatter<chrono::utc_time<_Duration>, _CharT>
1852 : __format::__formatter_chrono<_CharT>
1854 template<typename _ParseContext>
1855 constexpr typename _ParseContext::iterator
1856 parse(_ParseContext& __pc)
1857 { return _M_f._M_parse(__pc, __format::_ZonedDateTime); }
1859 template<typename _FormatContext>
1860 typename _FormatContext::iterator
1861 format(const chrono::utc_time<_Duration>& __t,
1862 _FormatContext& __fc) const
1864 // Adjust by removing leap seconds to get equivalent sys_time.
1865 // We can't just use clock_cast because we want to know if the time
1866 // falls within a leap second insertion, and format seconds as "60
".
1867 using chrono::__detail::__utc_leap_second;
1868 using chrono::seconds;
1869 using chrono::sys_time;
1870 using _CDur = common_type_t<_Duration, seconds>;
1871 const auto __li = chrono::get_leap_second_info(__t);
1872 sys_time<_CDur> __s{__t.time_since_epoch() - __li.elapsed};
1873 if (!__li.is_leap_second) [[likely]]
1874 return _M_f._M_format(__s, __fc);
1876 return _M_f._M_format(__utc_leap_second(__s), __fc);
1880 friend formatter<chrono::__detail::__utc_leap_second<_Duration>, _CharT>;
1882 __format::__formatter_chrono<_CharT> _M_f;
1885 template<typename _Duration, typename _CharT>
1886 struct formatter<chrono::tai_time<_Duration>, _CharT>
1887 : __format::__formatter_chrono<_CharT>
1889 template<typename _ParseContext>
1890 constexpr typename _ParseContext::iterator
1891 parse(_ParseContext& __pc)
1892 { return _M_f._M_parse(__pc, __format::_ZonedDateTime); }
1894 template<typename _FormatContext>
1895 typename _FormatContext::iterator
1896 format(const chrono::tai_time<_Duration>& __t,
1897 _FormatContext& __fc) const
1899 // Convert to __local_time_fmt with abbrev "TAI
" and offset 0s.
1901 // Offset is 1970y/January/1 - 1958y/January/1
1902 constexpr chrono::days __tai_offset = chrono::days(4383);
1903 using _CDur = common_type_t<_Duration, chrono::days>;
1904 chrono::local_time<_CDur> __lt(__t.time_since_epoch() - __tai_offset);
1905 const string __abbrev("TAI
", 3);
1906 const chrono::seconds __off = 0s;
1907 const auto __lf = chrono::local_time_format(__lt, &__abbrev, &__off);
1908 return _M_f._M_format(__lf, __fc);
1912 __format::__formatter_chrono<_CharT> _M_f;
1915 template<typename _Duration, typename _CharT>
1916 struct formatter<chrono::gps_time<_Duration>, _CharT>
1917 : __format::__formatter_chrono<_CharT>
1919 template<typename _ParseContext>
1920 constexpr typename _ParseContext::iterator
1921 parse(_ParseContext& __pc)
1922 { return _M_f._M_parse(__pc, __format::_ZonedDateTime); }
1924 template<typename _FormatContext>
1925 typename _FormatContext::iterator
1926 format(const chrono::gps_time<_Duration>& __t,
1927 _FormatContext& __fc) const
1929 // Convert to __local_time_fmt with abbrev "GPS
" and offset 0s.
1931 // Offset is 1980y/January/Sunday[1] - 1970y/January/1
1932 constexpr chrono::days __gps_offset = chrono::days(3657);
1933 using _CDur = common_type_t<_Duration, chrono::days>;
1934 chrono::local_time<_CDur> __lt(__t.time_since_epoch() + __gps_offset);
1935 const string __abbrev("GPS
", 3);
1936 const chrono::seconds __off = 0s;
1937 const auto __lf = chrono::local_time_format(__lt, &__abbrev, &__off);
1938 return _M_f._M_format(__lf, __fc);
1942 __format::__formatter_chrono<_CharT> _M_f;
1945 template<typename _Duration, typename _CharT>
1946 struct formatter<chrono::file_time<_Duration>, _CharT>
1948 template<typename _ParseContext>
1949 constexpr typename _ParseContext::iterator
1950 parse(_ParseContext& __pc)
1951 { return _M_f._M_parse(__pc, __format::_ZonedDateTime); }
1953 template<typename _FormatContext>
1954 typename _FormatContext::iterator
1955 format(const chrono::file_time<_Duration>& __t,
1956 _FormatContext& __ctx) const
1958 using namespace chrono;
1959 return _M_f._M_format(chrono::clock_cast<system_clock>(__t), __ctx);
1963 __format::__formatter_chrono<_CharT> _M_f;
1966 template<typename _Duration, typename _CharT>
1967 struct formatter<chrono::local_time<_Duration>, _CharT>
1969 template<typename _ParseContext>
1970 constexpr typename _ParseContext::iterator
1971 parse(_ParseContext& __pc)
1972 { return _M_f._M_parse(__pc, __format::_DateTime); }
1974 template<typename _FormatContext>
1975 typename _FormatContext::iterator
1976 format(const chrono::local_time<_Duration>& __t,
1977 _FormatContext& __ctx) const
1978 { return _M_f._M_format(__t, __ctx); }
1981 __format::__formatter_chrono<_CharT> _M_f;
1984 template<typename _Duration, typename _CharT>
1985 struct formatter<chrono::__detail::__local_time_fmt<_Duration>, _CharT>
1987 template<typename _ParseContext>
1988 constexpr typename _ParseContext::iterator
1989 parse(_ParseContext& __pc)
1990 { return _M_f._M_parse(__pc, __format::_ZonedDateTime); }
1992 template<typename _FormatContext>
1993 typename _FormatContext::iterator
1994 format(const chrono::__detail::__local_time_fmt<_Duration>& __t,
1995 _FormatContext& __ctx) const
1996 { return _M_f._M_format(__t, __ctx); }
1999 __format::__formatter_chrono<_CharT> _M_f;
2002 #if _GLIBCXX_USE_CXX11_ABI || ! _GLIBCXX_USE_DUAL_ABI
2003 template<typename _Duration, typename _TimeZonePtr, typename _CharT>
2004 struct formatter<chrono::zoned_time<_Duration, _TimeZonePtr>, _CharT>
2005 : formatter<chrono::__detail::__local_time_fmt<_Duration>, _CharT>
2007 template<typename _FormatContext>
2008 typename _FormatContext::iterator
2009 format(const chrono::zoned_time<_Duration, _TimeZonePtr>& __tp,
2010 _FormatContext& __ctx) const
2012 using chrono::__detail::__local_time_fmt;
2013 using _Base = formatter<__local_time_fmt<_Duration>, _CharT>;
2014 const chrono::sys_info __info = __tp.get_info();
2015 const auto __lf = chrono::local_time_format(__tp.get_local_time(),
2018 return _Base::format(__lf, __ctx);
2023 // Partial specialization needed for %c formatting of __utc_leap_second.
2024 template<typename _Duration, typename _CharT>
2025 struct formatter<chrono::__detail::__utc_leap_second<_Duration>, _CharT>
2026 : formatter<chrono::utc_time<_Duration>, _CharT>
2028 template<typename _FormatContext>
2029 typename _FormatContext::iterator
2030 format(const chrono::__detail::__utc_leap_second<_Duration>& __t,
2031 _FormatContext& __fc) const
2032 { return this->_M_f._M_format(__t, __fc); }
2040 // TODO: from_stream for duration
2042 template<typename _CharT, typename _Traits, typename _Rep, typename _Period,
2043 typename _Alloc = allocator<_CharT>>
2044 basic_istream<_CharT, _Traits>&
2045 from_stream(basic_istream<_CharT, _Traits>& __is, const _CharT* __fmt,
2046 duration<_Rep, _Period>& __d,
2047 basic_string<_CharT, _Traits, _Alloc>* __abbrev = nullptr,
2048 minutes* __offset = nullptr)
2053 template<typename _CharT, typename _Traits>
2054 inline basic_ostream<_CharT, _Traits>&
2055 operator<<(basic_ostream<_CharT, _Traits>& __os, const day& __d)
2057 using _Ctx = __conditional_t<is_same_v<_CharT, char>,
2058 format_context, wformat_context>;
2059 using _Str = basic_string_view<_CharT>;
2060 _Str __s = _GLIBCXX_WIDEN("{:02d} is not a valid day
");
2062 __s = __s.substr(0, 6);
2063 __os << std::vformat(__s, make_format_args<_Ctx>((unsigned)__d));
2067 // TODO from_stream for day
2069 template<typename _CharT, typename _Traits>
2070 inline basic_ostream<_CharT, _Traits>&
2071 operator<<(basic_ostream<_CharT, _Traits>& __os, const month& __m)
2073 using _Ctx = __conditional_t<is_same_v<_CharT, char>,
2074 format_context, wformat_context>;
2075 using _Str = basic_string_view<_CharT>;
2076 _Str __s = _GLIBCXX_WIDEN("{:L%b}{} is not a valid month
");
2078 __os << std::vformat(__os.getloc(), __s.substr(0, 6),
2079 make_format_args<_Ctx>(__m));
2081 __os << std::vformat(__s.substr(6),
2082 make_format_args<_Ctx>((unsigned)__m));
2086 // TODO from_stream for month
2088 template<typename _CharT, typename _Traits>
2089 inline basic_ostream<_CharT, _Traits>&
2090 operator<<(basic_ostream<_CharT, _Traits>& __os, const year& __y)
2092 using _Ctx = __conditional_t<is_same_v<_CharT, char>,
2093 format_context, wformat_context>;
2094 using _Str = basic_string_view<_CharT>;
2095 _Str __s = _GLIBCXX_WIDEN("-{:04d} is not a valid year
");
2097 __s = __s.substr(0, 7);
2099 if (__i >= 0) [[likely]]
2100 __s.remove_prefix(1);
2103 __os << std::vformat(__s, make_format_args<_Ctx>(__i));
2107 // TODO from_stream for year
2109 template<typename _CharT, typename _Traits>
2110 inline basic_ostream<_CharT, _Traits>&
2111 operator<<(basic_ostream<_CharT, _Traits>& __os, const weekday& __wd)
2113 using _Ctx = __conditional_t<is_same_v<_CharT, char>,
2114 format_context, wformat_context>;
2115 using _Str = basic_string_view<_CharT>;
2116 _Str __s = _GLIBCXX_WIDEN("{:L%a}{} is not a valid weekday
");
2118 __os << std::vformat(__os.getloc(), __s.substr(0, 6),
2119 make_format_args<_Ctx>(__wd));
2121 __os << std::vformat(__s.substr(6),
2122 make_format_args<_Ctx>(__wd.c_encoding()));
2126 // TODO from_stream for weekday
2128 template<typename _CharT, typename _Traits>
2129 inline basic_ostream<_CharT, _Traits>&
2130 operator<<(basic_ostream<_CharT, _Traits>& __os,
2131 const weekday_indexed& __wdi)
2133 // The standard says to format wdi.weekday() and wdi.index() using
2134 // either "{:L}[{}]
" or "{:L}[{} is not a valid index]
". The {:L} spec
2135 // means to format the weekday using ostringstream, so just do that.
2136 basic_stringstream<_CharT> __os2;
2137 __os2.imbue(__os.getloc());
2138 __os2 << __wdi.weekday();
2139 const auto __i = __wdi.index();
2140 if constexpr (is_same_v<_CharT, char>)
2141 __os2 << std::format("[{}
", __i);
2143 __os2 << std::format(L"[{}
", __i);
2144 basic_string_view<_CharT> __s = _GLIBCXX_WIDEN(" is not a valid index]
");
2145 if (__i >= 1 && __i <= 5)
2146 __os2 << __s.back();
2149 __os << __os2.view();
2153 template<typename _CharT, typename _Traits>
2154 inline basic_ostream<_CharT, _Traits>&
2155 operator<<(basic_ostream<_CharT, _Traits>& __os,
2156 const weekday_last& __wdl)
2158 // As above, just write straight to a stringstream, as if by "{:L}[last]
"
2159 basic_stringstream<_CharT> __os2;
2160 __os2.imbue(__os.getloc());
2161 __os2 << __wdl.weekday() << _GLIBCXX_WIDEN("[last]
");
2162 __os << __os2.view();
2166 template<typename _CharT, typename _Traits>
2167 inline basic_ostream<_CharT, _Traits>&
2168 operator<<(basic_ostream<_CharT, _Traits>& __os, const month_day& __md)
2170 // As above, just write straight to a stringstream, as if by "{:L}/{}
"
2171 basic_stringstream<_CharT> __os2;
2172 __os2.imbue(__os.getloc());
2173 __os2 << __md.month();
2174 if constexpr (is_same_v<_CharT, char>)
2178 __os2 << __md.day();
2179 __os << __os2.view();
2183 // TODO from_stream for month_day
2185 template<typename _CharT, typename _Traits>
2186 inline basic_ostream<_CharT, _Traits>&
2187 operator<<(basic_ostream<_CharT, _Traits>& __os,
2188 const month_day_last& __mdl)
2190 // As above, just write straight to a stringstream, as if by "{:L}/last
"
2191 basic_stringstream<_CharT> __os2;
2192 __os2.imbue(__os.getloc());
2193 __os2 << __mdl.month();
2194 if constexpr (is_same_v<_CharT, char>)
2198 __os << __os2.view();
2202 template<typename _CharT, typename _Traits>
2203 inline basic_ostream<_CharT, _Traits>&
2204 operator<<(basic_ostream<_CharT, _Traits>& __os,
2205 const month_weekday& __mwd)
2207 // As above, just write straight to a stringstream, as if by "{:L}/{:L}
"
2208 basic_stringstream<_CharT> __os2;
2209 __os2.imbue(__os.getloc());
2210 __os2 << __mwd.month();
2211 if constexpr (is_same_v<_CharT, char>)
2215 __os2 << __mwd.weekday_indexed();
2216 __os << __os2.view();
2220 template<typename _CharT, typename _Traits>
2221 inline basic_ostream<_CharT, _Traits>&
2222 operator<<(basic_ostream<_CharT, _Traits>& __os,
2223 const month_weekday_last& __mwdl)
2225 // As above, just write straight to a stringstream, as if by "{:L}/{:L}
"
2226 basic_stringstream<_CharT> __os2;
2227 __os2.imbue(__os.getloc());
2228 __os2 << __mwdl.month();
2229 if constexpr (is_same_v<_CharT, char>)
2233 __os2 << __mwdl.weekday_last();
2234 __os << __os2.view();
2238 template<typename _CharT, typename _Traits>
2239 inline basic_ostream<_CharT, _Traits>&
2240 operator<<(basic_ostream<_CharT, _Traits>& __os, const year_month& __ym)
2242 // As above, just write straight to a stringstream, as if by "{}/{:L}
"
2243 basic_stringstream<_CharT> __os2;
2244 __os2.imbue(__os.getloc());
2245 __os2 << __ym.year();
2246 if constexpr (is_same_v<_CharT, char>)
2250 __os2 << __ym.month();
2251 __os << __os2.view();
2255 // TODO from_stream for year_month
2257 template<typename _CharT, typename _Traits>
2258 inline basic_ostream<_CharT, _Traits>&
2259 operator<<(basic_ostream<_CharT, _Traits>& __os,
2260 const year_month_day& __ymd)
2262 using _Ctx = __conditional_t<is_same_v<_CharT, char>,
2263 format_context, wformat_context>;
2264 using _Str = basic_string_view<_CharT>;
2265 _Str __s = _GLIBCXX_WIDEN("{:%F} is not a valid date
");
2266 __os << std::vformat(__ymd.ok() ? __s.substr(0, 5) : __s,
2267 make_format_args<_Ctx>(__ymd));
2271 // TODO from_stream for year_month_day
2273 template<typename _CharT, typename _Traits>
2274 inline basic_ostream<_CharT, _Traits>&
2275 operator<<(basic_ostream<_CharT, _Traits>& __os,
2276 const year_month_day_last& __ymdl)
2278 // As above, just write straight to a stringstream, as if by "{}/{:L}
"
2279 basic_stringstream<_CharT> __os2;
2280 __os2.imbue(__os.getloc());
2281 __os2 << __ymdl.year();
2282 if constexpr (is_same_v<_CharT, char>)
2286 __os2 << __ymdl.month_day_last();
2287 __os << __os2.view();
2291 template<typename _CharT, typename _Traits>
2292 inline basic_ostream<_CharT, _Traits>&
2293 operator<<(basic_ostream<_CharT, _Traits>& __os,
2294 const year_month_weekday& __ymwd)
2296 // As above, just write straight to a stringstream, as if by
2298 basic_stringstream<_CharT> __os2;
2299 __os2.imbue(__os.getloc());
2301 if constexpr (is_same_v<_CharT, char>)
2305 __os2 << __ymwd.year() << __slash << __ymwd.month() << __slash
2306 << __ymwd.weekday_indexed();
2307 __os << __os2.view();
2311 template<typename _CharT, typename _Traits>
2312 inline basic_ostream<_CharT, _Traits>&
2313 operator<<(basic_ostream<_CharT, _Traits>& __os,
2314 const year_month_weekday_last& __ymwdl)
2316 // As above, just write straight to a stringstream, as if by
2318 basic_stringstream<_CharT> __os2;
2319 __os2.imbue(__os.getloc());
2321 if constexpr (is_same_v<_CharT, char>)
2325 __os2 << __ymwdl.year() << __slash << __ymwdl.month() << __slash
2326 << __ymwdl.weekday_last();
2327 __os << __os2.view();
2331 template<typename _CharT, typename _Traits, typename _Duration>
2332 inline basic_ostream<_CharT, _Traits>&
2333 operator<<(basic_ostream<_CharT, _Traits>& __os,
2334 const hh_mm_ss<_Duration>& __hms)
2336 return __os << format(__os.getloc(), _GLIBCXX_WIDEN("{:L%T}
"), __hms);
2339 #if _GLIBCXX_USE_CXX11_ABI || ! _GLIBCXX_USE_DUAL_ABI
2341 template<typename _CharT, typename _Traits>
2342 basic_ostream<_CharT, _Traits>&
2343 operator<<(basic_ostream<_CharT, _Traits>& __os, const sys_info& __i)
2345 __os << '[' << __i.begin << ',' << __i.end
2346 << ',' << hh_mm_ss(__i.offset) << ',' << __i.save
2347 << ',' << __i.abbrev << ']';
2352 template<typename _CharT, typename _Traits>
2353 basic_ostream<_CharT, _Traits>&
2354 operator<<(basic_ostream<_CharT, _Traits>& __os, const local_info& __li)
2357 if (__li.result == local_info::unique)
2361 if (__li.result == local_info::nonexistent)
2362 __os << "nonexistent
";
2364 __os << "ambiguous
";
2365 __os << " local time between
" << __li.first;
2366 __os << " and
" << __li.second;
2372 template<typename _CharT, typename _Traits, typename _Duration,
2373 typename _TimeZonePtr>
2374 inline basic_ostream<_CharT, _Traits>&
2375 operator<<(basic_ostream<_CharT, _Traits>& __os,
2376 const zoned_time<_Duration, _TimeZonePtr>& __t)
2378 __os << format(__os.getloc(), _GLIBCXX_WIDEN("{:L%F %T %Z}
"), __t);
2383 template<typename _CharT, typename _Traits, typename _Duration>
2384 requires (!treat_as_floating_point_v<typename _Duration::rep>)
2385 && ratio_less_v<typename _Duration::period, days::period>
2386 inline basic_ostream<_CharT, _Traits>&
2387 operator<<(basic_ostream<_CharT, _Traits>& __os,
2388 const sys_time<_Duration>& __tp)
2390 __os << std::format(__os.getloc(), _GLIBCXX_WIDEN("{:L%F %T}
"), __tp);
2394 template<typename _CharT, typename _Traits>
2395 inline basic_ostream<_CharT, _Traits>&
2396 operator<<(basic_ostream<_CharT, _Traits>& __os, const sys_days& __dp)
2398 __os << year_month_day{__dp};
2402 // TODO: from_stream for sys_time
2404 template<typename _CharT, typename _Traits, typename _Duration>
2405 inline basic_ostream<_CharT, _Traits>&
2406 operator<<(basic_ostream<_CharT, _Traits>& __os,
2407 const utc_time<_Duration>& __t)
2409 __os << std::format(__os.getloc(), _GLIBCXX_WIDEN("{:L%F %T}
"), __t);
2413 // TODO: from_stream for utc_time
2415 template<typename _CharT, typename _Traits, typename _Duration>
2416 inline basic_ostream<_CharT, _Traits>&
2417 operator<<(basic_ostream<_CharT, _Traits>& __os,
2418 const tai_time<_Duration>& __t)
2420 __os << std::format(__os.getloc(), _GLIBCXX_WIDEN("{:L%F %T}
"), __t);
2424 // TODO: from_stream for tai_time
2426 template<typename _CharT, typename _Traits, typename _Duration>
2427 inline basic_ostream<_CharT, _Traits>&
2428 operator<<(basic_ostream<_CharT, _Traits>& __os,
2429 const gps_time<_Duration>& __t)
2431 __os << std::format(__os.getloc(), _GLIBCXX_WIDEN("{:L%F %T}
"), __t);
2435 // TODO: from_stream for gps_time
2438 template<typename _CharT, typename _Traits, typename _Duration>
2439 inline basic_ostream<_CharT, _Traits>&
2440 operator<<(basic_ostream<_CharT, _Traits>& __os,
2441 const file_time<_Duration>& __t)
2443 __os << std::format(__os.getloc(), _GLIBCXX_WIDEN("{:L%F %T}
"), __t);
2447 // TODO: from_stream for file_time
2449 template<typename _CharT, typename _Traits, typename _Duration>
2450 inline basic_ostream<_CharT, _Traits>&
2451 operator<<(basic_ostream<_CharT, _Traits>& __os,
2452 const local_time<_Duration>& __lt)
2454 __os << sys_time<_Duration>{__lt.time_since_epoch()};
2458 // TODO: from_stream for local_time
2459 #undef _GLIBCXX_WIDEN
2462 } // namespace chrono
2464 _GLIBCXX_END_NAMESPACE_VERSION
2469 #endif //_GLIBCXX_CHRONO_IO_H