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Support floating point sec

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This commit is contained in:
Shawn Zhong 2023-01-13 04:17:19 -06:00
parent f6efeba365
commit 43c2eae78d
2 changed files with 32 additions and 12 deletions
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29
include/fmt/chrono.h
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@ -676,6 +676,19 @@ enum class pad_type {
space,
};
template <typename OutputIt>
auto write_padding(OutputIt out, int width, pad_type pad) {
switch (pad) {
case pad_type::zero:
case pad_type::unspecified:
return std::fill_n(out, width, '0');
case pad_type::space:
return std::fill_n(out, width, ' ');
case pad_type::none:
return out;
}
}
// Parses a put_time-like format string and invokes handler actions.
template <typename Char, typename Handler>
FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin,
@ -1878,17 +1891,7 @@ struct chrono_formatter {
to_unsigned(to_nonnegative_int(value, max_value<int>()));
int num_digits = detail::count_digits(n);
if (width > num_digits) {
switch (pad) {
case pad_type::zero:
case pad_type::unspecified:
out = std::fill_n(out, width - num_digits, '0');
break;
case pad_type::space:
out = std::fill_n(out, width - num_digits, ' ');
break;
case pad_type::none:
break;
}
out = detail::write_padding(out, width - num_digits, pad);
}
out = format_decimal<char_type>(out, n, num_digits).end;
}
@ -1974,7 +1977,9 @@ struct chrono_formatter {
write_floating_seconds(buf, std::chrono::duration<rep, Period>(val),
precision);
if (negative) *out++ = '-';
if (buf.size() < 2 || buf[1] == '.') *out++ = '0';
if (buf.size() < 2 || buf[1] == '.') {
out = detail::write_padding(out, 1, pad);
}
out = std::copy(buf.begin(), buf.end(), out);
} else {
write(second(), 2, pad);

15
test/chrono-test.cc
View File

@ -949,4 +949,19 @@ TEST(chrono_test, glibc_extensions) {
EXPECT_EQ(fmt::format("{:%-OI,%-OH,%-OM,%-OS}", tm), "1,1,2,3");
}
{
const auto d = std::chrono::seconds(3) + std::chrono::milliseconds(140);
EXPECT_EQ(fmt::format("{:%S}", d), "03.140");
EXPECT_EQ(fmt::format("{:%0S}", d), "03.140");
EXPECT_EQ(fmt::format("{:%_S}", d), " 3.140");
EXPECT_EQ(fmt::format("{:%-S}", d), "3.140");
}
{
const auto d = std::chrono::duration<double>(3.14);
EXPECT_EQ(fmt::format("{:%S}", d), "03.140000");
EXPECT_EQ(fmt::format("{:%0S}", d), "03.140000");
EXPECT_EQ(fmt::format("{:%_S}", d), " 3.140000");
EXPECT_EQ(fmt::format("{:%-S}", d), "3.140000");
}
}