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Minor cleanup

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This commit is contained in:
Victor Zverovich 2021-10-17 06:33:27 -07:00
parent a1d586302f
commit 684e2fdc94
1 changed files with 45 additions and 69 deletions
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110
include/fmt/chrono.h
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@ -1454,17 +1454,17 @@ template <typename OutputIt, typename Char> class tm_writer {
return hour == 0 ? 12 : hour;
}
void write1(size_t value) { *out_++ = static_cast<char>('0' + value % 10); }
void write2(size_t value) {
const char* d = digits2(value);
void write1(int value) { *out_++ = static_cast<char>('0' + value % 10); }
void write2(int value) {
const char* d = digits2(to_unsigned(value));
*out_++ = *d++;
*out_++ = *d;
}
void write_year(int year) {
if (year >= 0 && year < 10000) {
write2(to_unsigned(year / 100));
write2(to_unsigned(year % 100));
write2(year / 100);
write2(year % 100);
} else {
// At least 4 characters.
int width = 4;
@ -1501,8 +1501,8 @@ template <typename OutputIt, typename Char> class tm_writer {
buf.resize(count);
break;
}
const size_t MIN_GROWTH = 10;
buf.reserve(buf.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH));
const size_t min_growth = 10;
buf.reserve(buf.capacity() + (size > min_growth ? size : min_growth));
}
// Remove the extra space.
out_ = copy_str<Char>(buf.begin() + 1, buf.end(), out_);
@ -1520,16 +1520,12 @@ template <typename OutputIt, typename Char> class tm_writer {
void on_abbr_weekday() { format_localized('a'); }
void on_full_weekday() { format_localized('A'); }
void on_dec0_weekday(numeric_system ns) {
if (ns == numeric_system::standard)
write1(to_unsigned(tm_.tm_wday));
else
format_localized('w', 'O');
if (ns != numeric_system::standard) return format_localized('w', 'O');
write1(tm_.tm_wday);
}
void on_dec1_weekday(numeric_system ns) {
if (ns == numeric_system::standard)
write1(to_unsigned(tm_.tm_wday == 0 ? days_per_week : tm_.tm_wday));
else
format_localized('u', 'O');
if (ns != numeric_system::standard) return format_localized('u', 'O');
write1(tm_.tm_wday == 0 ? days_per_week : tm_.tm_wday);
}
void on_abbr_month() { format_localized('b'); }
@ -1571,16 +1567,12 @@ template <typename OutputIt, typename Char> class tm_writer {
void on_tz_name() { format_localized('Z'); }
void on_year(numeric_system ns) {
if (ns == numeric_system::standard)
if (ns != numeric_system::standard) return format_localized('Y', 'E');
write_year(tm_year());
else
format_localized('Y', 'E');
}
void on_short_year(numeric_system ns) {
if (ns == numeric_system::standard)
write2(to_unsigned(split_year_lower(tm_year())));
else
format_localized('y', 'O');
if (ns != numeric_system::standard) return format_localized('y', 'O');
write2(split_year_lower(tm_year()));
}
void on_offset_year() { format_localized('y', 'E'); }
@ -1593,53 +1585,45 @@ template <typename OutputIt, typename Char> class tm_writer {
*out_++ = '-';
*out_++ = '0';
} else if (upper >= 0 && upper < 100) {
write2(to_unsigned(upper));
write2(upper);
} else {
out_ = write<Char>(out_, upper);
}
}
void on_dec_month(numeric_system ns) {
if (ns == numeric_system::standard)
write2(to_unsigned(tm_.tm_mon + 1));
else
format_localized('m', 'O');
if (ns != numeric_system::standard) return format_localized('m', 'O');
write2(tm_.tm_mon + 1);
}
void on_dec0_week_of_year(numeric_system ns) {
if (ns != numeric_system::standard) return format_localized('U', 'O');
write2(to_unsigned((tm_.tm_yday + days_per_week - tm_.tm_wday) /
days_per_week));
write2((tm_.tm_yday + days_per_week - tm_.tm_wday) / days_per_week);
}
void on_dec1_week_of_year(numeric_system ns) {
if (ns != numeric_system::standard) return format_localized('W', 'O');
write2(to_unsigned(
(tm_.tm_yday + days_per_week -
write2((tm_.tm_yday + days_per_week -
(tm_.tm_wday == 0 ? (days_per_week - 1) : (tm_.tm_wday - 1))) /
days_per_week));
days_per_week);
}
void on_iso_week_of_year(numeric_system ns) {
if (ns == numeric_system::standard)
write2(to_unsigned(tm_iso_week_of_year()));
else
format_localized('V', 'O');
if (ns != numeric_system::standard) return format_localized('V', 'O');
write2(tm_iso_week_of_year());
}
void on_iso_week_based_year() { write_year(tm_iso_week_year()); }
void on_iso_week_based_short_year() {
write2(to_unsigned(split_year_lower(tm_iso_week_year())));
write2(split_year_lower(tm_iso_week_year()));
}
void on_day_of_year() {
auto yday = tm_.tm_yday + 1;
write1(to_unsigned(yday / 100));
write2(to_unsigned(yday % 100));
write1(yday / 100);
write2(yday % 100);
}
void on_day_of_month(numeric_system ns) {
if (ns == numeric_system::standard)
write2(to_unsigned(tm_.tm_mday));
else
format_localized('d', 'O');
if (ns != numeric_system::standard) return format_localized('d', 'O');
write2(tm_.tm_mday);
}
void on_day_of_month_space(numeric_system ns) {
if (ns != numeric_system::standard) return format_localized('e', 'O');
@ -1649,35 +1633,27 @@ template <typename OutputIt, typename Char> class tm_writer {
}
void on_24_hour(numeric_system ns) {
if (ns == numeric_system::standard)
write2(to_unsigned(tm_.tm_hour));
else
format_localized('H', 'O');
if (ns != numeric_system::standard) return format_localized('H', 'O');
write2(tm_.tm_hour);
}
void on_12_hour(numeric_system ns) {
if (ns == numeric_system::standard)
write2(to_unsigned(tm_hour12()));
else
format_localized('I', 'O');
if (ns != numeric_system::standard) return format_localized('I', 'O');
write2(tm_hour12());
}
void on_minute(numeric_system ns) {
if (ns == numeric_system::standard)
write2(to_unsigned(tm_.tm_min));
else
format_localized('M', 'O');
if (ns != numeric_system::standard) return format_localized('M', 'O');
write2(tm_.tm_min);
}
void on_second(numeric_system ns) {
if (ns == numeric_system::standard)
write2(to_unsigned(tm_.tm_sec));
else
format_localized('S', 'O');
if (ns != numeric_system::standard) return format_localized('S', 'O');
write2(tm_.tm_sec);
}
void on_12_hour_time() { format_localized('r'); }
void on_24_hour_time() {
write2(to_unsigned(tm_.tm_hour));
write2(tm_.tm_hour);
*out_++ = ':';
write2(to_unsigned(tm_.tm_min));
write2(tm_.tm_min);
}
void on_iso_time() {
char buf[8];
@ -1741,7 +1717,7 @@ template <typename Char> struct formatter<std::tm, Char> {
end = detail::parse_chrono_format(begin, end, detail::tm_format_checker());
if (!with_default || end != begin)
specs = {begin, detail::to_unsigned(end - begin)};
// basic_string_view<>::compare isn't constexpr before C++17
// basic_string_view<>::compare isn't constexpr before C++17.
if (specs.size() == 2 && specs[0] == Char('%')) {
if (specs[1] == Char('F'))
spec_ = spec::year_month_day;
@ -1760,14 +1736,14 @@ template <typename Char> struct formatter<std::tm, Char> {
template <typename FormatContext>
auto format(const std::tm& tm, FormatContext& ctx) const
-> decltype(ctx.out()) {
detail::tm_writer<decltype(ctx.out()), Char> f(ctx.out(), tm);
auto w = detail::tm_writer<decltype(ctx.out()), Char>(ctx.out(), tm);
if (spec_ == spec::year_month_day)
f.on_iso_date();
w.on_iso_date();
else if (spec_ == spec::hh_mm_ss)
f.on_iso_time();
w.on_iso_time();
else
detail::parse_chrono_format(specs.begin(), specs.end(), f);
return f.out();
detail::parse_chrono_format(specs.begin(), specs.end(), w);
return w.out();
}
};