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Fix a warning (#1649)

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This commit is contained in:
Victor Zverovich 2020-04-28 06:19:29 -07:00
parent 9dde9f0131
commit f2ed03b919
1 changed files with 14 additions and 10 deletions
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24
include/fmt/chrono.h
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@ -768,19 +768,23 @@ OutputIt format_duration_value(OutputIt out, Rep val, int precision) {
return format_to(out, std::is_floating_point<Rep>::value ? fp_f : format,
val);
}
template <typename Char, typename OutputIt>
OutputIt copy_unit(string_view unit, OutputIt out, Char) {
return std::copy(unit.begin(), unit.end(), out);
}
template <typename OutputIt>
OutputIt copy_unit(string_view unit, OutputIt out, wchar_t) {
// This works when wchar_t is UTF-32 because units only contain characters
// that have the same representation in UTF-16 and UTF-32.
utf8_to_utf16 u(unit);
return std::copy(u.c_str(), u.c_str() + u.size(), out);
}
template <typename Char, typename Period, typename OutputIt>
OutputIt format_duration_unit(OutputIt out) {
if (const char* unit = get_units<Period>()) {
string_view s(unit);
if (const_check(std::is_same<Char, wchar_t>())) {
// This works when wchar_t is UTF-32 because units only contain code
// points that have the same values in UTF-16 and UTF-32.
utf8_to_utf16 u(s);
return std::copy(u.c_str(), u.c_str() + u.size(), out);
}
return std::copy(s.begin(), s.end(), out);
}
if (const char* unit = get_units<Period>())
return copy_unit(string_view(unit), out, Char());
const Char num_f[] = {'[', '{', '}', ']', 's', 0};
if (Period::den == 1) return format_to(out, num_f, Period::num);
const Char num_def_f[] = {'[', '{', '}', '/', '{', '}', ']', 's', 0};