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Simplify std::tm formatter

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This commit is contained in:
Vladislav Shchapov
2021-11-13 22:51:13 +05:00
committed by Victor Zverovich
parent aa5517f6b9
commit c089f7d497
1 changed files with 10 additions and 15 deletions
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25
include/fmt/chrono.h
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@ -1847,18 +1847,6 @@ template <typename Char> struct formatter<std::tm, Char> {
return end;
}
template <typename It>
It do_format(It out, const std::tm& tm, const std::locale& loc) const {
auto w = detail::tm_writer<It, Char>(loc, out, tm);
if (spec_ == spec::year_month_day)
w.on_iso_date();
else if (spec_ == spec::hh_mm_ss)
w.on_iso_time();
else
detail::parse_chrono_format(specs.begin(), specs.end(), w);
return w.out();
}
public:
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
@ -1868,9 +1856,16 @@ template <typename Char> struct formatter<std::tm, Char> {
template <typename FormatContext>
auto format(const std::tm& tm, FormatContext& ctx) const
-> decltype(ctx.out()) {
const auto loc = ctx.locale();
return this->do_format(ctx.out(), tm,
detail::get_locale(static_cast<bool>(loc), loc));
const auto loc_ref = ctx.locale();
detail::get_locale loc(static_cast<bool>(loc_ref), loc_ref);
auto w = detail::tm_writer<decltype(ctx.out()), Char>(loc, ctx.out(), tm);
if (spec_ == spec::year_month_day)
w.on_iso_date();
else if (spec_ == spec::hh_mm_ss)
w.on_iso_time();
else
detail::parse_chrono_format(specs.begin(), specs.end(), w);
return w.out();
}
};