mirror of
https://github.com/HowardHinnant/date.git
synced 2025-01-14 01:37:57 +08:00
Enable parse and format for more types:
* year
* month
* day
* weekday
* year_month
* month_day
This commit is contained in:
Howard Hinnant
parent
3ab6510cab
commit
3495c513a1
365
date.h
365
date.h
@ -4141,10 +4141,51 @@ operator<<(std::basic_ostream<CharT, Traits>& os, const local_time<Duration>& ut
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template <class Duration>
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struct fields
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{
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year_month_day ymd;
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time_of_day<Duration> tod;
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year_month_day ymd{0_y/0/0};
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weekday wd{7u};
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time_of_day<Duration> tod{};
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fields() = default;
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fields(year_month_day ymd_) : ymd(ymd_) {}
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fields(weekday wd_) : wd(wd_) {}
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fields(time_of_day<Duration> tod_) : tod(tod_) {}
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fields(year_month_day ymd_, weekday wd_) : ymd(ymd_), wd(wd_) {}
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fields(year_month_day ymd_, time_of_day<Duration> tod_) : ymd(ymd_), tod(tod_) {}
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fields(weekday wd_, time_of_day<Duration> tod_) : wd(wd_), tod(tod_) {}
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fields(year_month_day ymd_, weekday wd_, time_of_day<Duration> tod_)
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: ymd(ymd_)
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, wd(wd_)
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, tod(tod_)
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{}
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};
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namespace detail
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{
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template <class Duration>
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unsigned
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extract_weekday(const fields<Duration>& fds)
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{
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if (!fds.ymd.ok() && !fds.wd.ok())
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throw std::runtime_error("Can not format %u with unknown weekday");
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unsigned wd;
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if (fds.ymd.ok())
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{
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wd = static_cast<unsigned>(weekday{fds.ymd});
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if (fds.wd.ok() && wd != static_cast<unsigned>(fds.wd))
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throw std::runtime_error("Can not format %u with inconsistent weekday");
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}
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else
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wd = static_cast<unsigned>(fds.wd);
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return wd;
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}
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} // namespace detail
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template <class CharT, class Traits, class Duration>
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void
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to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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@ -4171,7 +4212,7 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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{
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if (modified == CharT{})
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{
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tm.tm_wday = static_cast<int>(unsigned(weekday{fds.ymd}));
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tm.tm_wday = static_cast<int>(detail::extract_weekday(fds));
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const CharT f[] = {'%', *fmt};
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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}
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@ -4224,7 +4265,7 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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tm.tm_mday = static_cast<int>(static_cast<unsigned>(ymd.day()));
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tm.tm_mon = static_cast<int>(static_cast<unsigned>(ymd.month()) - 1);
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tm.tm_year = static_cast<int>(ymd.year()) - 1900;
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tm.tm_wday = static_cast<int>(static_cast<unsigned>(weekday{ld}));
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tm.tm_wday = static_cast<int>(detail::extract_weekday(fds));
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tm.tm_yday = static_cast<int>((ld - local_days(ymd.year()/1/1)).count());
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CharT f[3] = {'%'};
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auto fe = begin(f) + 1;
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@ -4636,7 +4677,7 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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case 'u':
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if (command)
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{
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auto wd = static_cast<unsigned>(weekday{fds.ymd});
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auto wd = detail::extract_weekday(fds);
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if (modified == CharT{'O'})
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{
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const CharT f[] = {'%', modified, *fmt};
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@ -4667,7 +4708,7 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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{
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const CharT f[] = {'%', modified, *fmt};
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tm.tm_year = static_cast<int>(ymd.year()) - 1900;
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tm.tm_wday = static_cast<int>(static_cast<unsigned>(weekday{ld}));
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tm.tm_wday = static_cast<int>(detail::extract_weekday(fds));
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tm.tm_yday = static_cast<int>((ld - local_days(ymd.year()/1/1)).count());
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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modified = CharT{};
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@ -4704,7 +4745,7 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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const CharT f[] = {'%', modified, *fmt};
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auto const& ymd = fds.ymd;
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tm.tm_year = static_cast<int>(ymd.year()) - 1900;
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tm.tm_wday = static_cast<int>(static_cast<unsigned>(weekday{ld}));
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tm.tm_wday = static_cast<int>(detail::extract_weekday(fds));
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tm.tm_yday = static_cast<int>((ld - local_days(ymd.year()/1/1)).count());
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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modified = CharT{};
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@ -4736,7 +4777,7 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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case 'w':
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if (command)
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{
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auto wd = static_cast<unsigned>(weekday{fds.ymd});
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auto wd = detail::extract_weekday(fds);
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if (modified == CharT{'O'})
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{
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const CharT f[] = {'%', modified, *fmt};
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@ -4767,7 +4808,7 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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{
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const CharT f[] = {'%', modified, *fmt};
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tm.tm_year = static_cast<int>(ymd.year()) - 1900;
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tm.tm_wday = static_cast<int>(static_cast<unsigned>(weekday{ld}));
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tm.tm_wday = static_cast<int>(detail::extract_weekday(fds));
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tm.tm_yday = static_cast<int>((ld - local_days(ymd.year()/1/1)).count());
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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modified = CharT{};
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@ -4873,7 +4914,7 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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if (command)
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{
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if (offset_sec == nullptr)
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throw std::runtime_error("Can not format local_time with %z");
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throw std::runtime_error("Can not format %z with unknown offset");
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auto m = duration_cast<minutes>(*offset_sec);
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auto neg = m < minutes{0};
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m = abs(m);
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@ -4903,7 +4944,7 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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if (modified == CharT{})
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{
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if (abbrev == nullptr)
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throw std::runtime_error("Can not format local_time with %Z");
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throw std::runtime_error("Can not format %Z with unknown time_zone");
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for (auto c : *abbrev)
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os << CharT(c);
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}
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@ -4974,6 +5015,66 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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os << modified;
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}
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template <class CharT, class Traits>
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inline
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void
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to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const year& y)
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{
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using CT = std::chrono::seconds;
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fields<CT> fds{y/0/0};
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to_stream(os, fmt, fds);
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}
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template <class CharT, class Traits>
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inline
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void
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to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const month& m)
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{
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using CT = std::chrono::seconds;
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fields<CT> fds{m/0/0};
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to_stream(os, fmt, fds);
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}
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template <class CharT, class Traits>
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inline
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void
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to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const day& d)
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{
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using CT = std::chrono::seconds;
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fields<CT> fds{d/0/0};
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to_stream(os, fmt, fds);
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}
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template <class CharT, class Traits>
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inline
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void
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to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const weekday& wd)
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{
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using CT = std::chrono::seconds;
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fields<CT> fds{wd};
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to_stream(os, fmt, fds);
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}
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template <class CharT, class Traits>
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inline
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void
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to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const year_month& ym)
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{
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using CT = std::chrono::seconds;
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fields<CT> fds{ym/0};
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to_stream(os, fmt, fds);
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}
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template <class CharT, class Traits>
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inline
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void
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to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const month_day& md)
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{
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using CT = std::chrono::seconds;
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fields<CT> fds{md/0};
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to_stream(os, fmt, fds);
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}
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template <class CharT, class Traits>
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inline
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void
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@ -4981,7 +5082,7 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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const year_month_day& ymd)
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{
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using CT = std::chrono::seconds;
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fields<CT> fds{ymd, time_of_day<CT>{}};
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fields<CT> fds{ymd};
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to_stream(os, fmt, fds);
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}
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@ -5051,7 +5152,7 @@ template <class CharT, class Traits, class Alloc, class Streamable>
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auto
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format(const std::locale& loc, const std::basic_string<CharT, Traits, Alloc>& fmt,
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const Streamable& tp)
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-> decltype(to_stream(std::declval<std::basic_ostream<CharT, Traits>&>(), fmt, tp),
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-> decltype(to_stream(std::declval<std::basic_ostream<CharT, Traits>&>(), fmt.c_str(), tp),
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std::basic_string<CharT, Traits, Alloc>{})
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{
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std::basic_ostringstream<CharT, Traits> os;
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@ -5063,7 +5164,7 @@ format(const std::locale& loc, const std::basic_string<CharT, Traits, Alloc>& fm
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template <class CharT, class Traits, class Alloc, class Streamable>
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auto
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format(const std::basic_string<CharT, Traits, Alloc>& fmt, const Streamable& tp)
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-> decltype(to_stream(std::declval<std::basic_ostream<CharT, Traits>&>(), fmt, tp),
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-> decltype(to_stream(std::declval<std::basic_ostream<CharT, Traits>&>(), fmt.c_str(), tp),
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std::basic_string<CharT, Traits, Alloc>{})
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{
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std::basic_ostringstream<CharT, Traits> os;
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@ -6047,6 +6148,7 @@ from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
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{
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if (y != not_a_2digit_year)
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{
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// Convert y and an optional C to Y
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if (!(0 <= y && y <= 99))
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goto broken;
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if (C == not_a_century)
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@ -6074,6 +6176,7 @@ from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
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}
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if (g != not_a_2digit_year)
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{
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// Convert g and an optional C to G
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if (!(0 <= g && g <= 99))
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goto broken;
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if (C == not_a_century)
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@ -6101,6 +6204,7 @@ from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
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}
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if (G != not_a_year)
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{
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// Convert G, V and wd to Y, m and d
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if (V == not_a_week_num || wd == not_a_weekday)
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goto broken;
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auto ymd = year_month_day{local_days(year{G-1}/dec/thu[last]) +
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@ -6119,84 +6223,73 @@ from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
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else if (day(d) != ymd.day())
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goto broken;
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}
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if (Y != not_a_year)
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if (j != 0 && Y != not_a_year)
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{
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if (!(static_cast<int>(year::min()) <= Y &&
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Y <= static_cast<int>(year::max())))
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auto ymd = year_month_day{local_days(year{Y}/1/1) + days{j-1}};
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if (m == 0)
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m = static_cast<int>(static_cast<unsigned>(ymd.month()));
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else if (month(m) != ymd.month())
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goto broken;
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if (j != 0)
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{
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auto ymd = year_month_day{local_days(year{Y}/1/1) + days{j-1}};
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if (m == 0)
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m = static_cast<int>(static_cast<unsigned>(ymd.month()));
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else if (month(m) != ymd.month())
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goto broken;
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if (d == 0)
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d = static_cast<int>(static_cast<unsigned>(ymd.day()));
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else if (day(d) != ymd.day())
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goto broken;
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}
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if (U != not_a_week_num)
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{
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if (wd == not_a_weekday)
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goto broken;
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sys_days sd;
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if (U == 0)
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sd = year{Y-1}/dec/weekday{static_cast<unsigned>(wd)}[last];
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else
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sd = sys_days(year{Y}/jan/sun[1]) + weeks{U-1} +
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(weekday{static_cast<unsigned>(wd)} - sun);
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year_month_day ymd = sd;
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if (year{Y} != ymd.year())
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goto broken;
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if (m == 0)
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m = static_cast<int>(static_cast<unsigned>(ymd.month()));
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else if (month(m) != ymd.month())
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goto broken;
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if (d == 0)
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d = static_cast<int>(static_cast<unsigned>(ymd.day()));
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else if (day(d) != ymd.day())
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goto broken;
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}
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if (W != not_a_week_num)
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{
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if (wd == not_a_weekday)
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goto broken;
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sys_days sd;
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if (W == 0)
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sd = year{Y-1}/dec/weekday{static_cast<unsigned>(wd)}[last];
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else
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sd = sys_days(year{Y}/jan/mon[1]) + weeks{W-1} +
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(weekday{static_cast<unsigned>(wd)} - mon);
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year_month_day ymd = sd;
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if (year{Y} != ymd.year())
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goto broken;
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if (m == 0)
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m = static_cast<int>(static_cast<unsigned>(ymd.month()));
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else if (month(m) != ymd.month())
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goto broken;
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if (d == 0)
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d = static_cast<int>(static_cast<unsigned>(ymd.day()));
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else if (day(d) != ymd.day())
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goto broken;
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}
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if (m != 0 && d != 0)
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{
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auto ymd = year{Y}/m/d;
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if (!ymd.ok())
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goto broken;
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if (wd != not_a_weekday)
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{
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if (weekday{static_cast<unsigned>(wd)} != weekday(ymd))
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goto broken;
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}
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fds.ymd = ymd;
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}
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else
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if (d == 0)
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d = static_cast<int>(static_cast<unsigned>(ymd.day()));
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else if (day(d) != ymd.day())
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goto broken;
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}
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if (U != not_a_week_num && Y != not_a_year)
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{
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if (wd == not_a_weekday)
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goto broken;
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sys_days sd;
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if (U == 0)
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sd = year{Y-1}/dec/weekday{static_cast<unsigned>(wd)}[last];
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else
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sd = sys_days(year{Y}/jan/sun[1]) + weeks{U-1} +
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(weekday{static_cast<unsigned>(wd)} - sun);
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year_month_day ymd = sd;
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if (year{Y} != ymd.year())
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goto broken;
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if (m == 0)
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m = static_cast<int>(static_cast<unsigned>(ymd.month()));
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else if (month(m) != ymd.month())
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goto broken;
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if (d == 0)
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d = static_cast<int>(static_cast<unsigned>(ymd.day()));
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else if (day(d) != ymd.day())
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goto broken;
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}
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if (W != not_a_week_num && Y != not_a_year)
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{
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if (wd == not_a_weekday)
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goto broken;
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sys_days sd;
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if (W == 0)
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sd = year{Y-1}/dec/weekday{static_cast<unsigned>(wd)}[last];
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else
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sd = sys_days(year{Y}/jan/mon[1]) + weeks{W-1} +
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(weekday{static_cast<unsigned>(wd)} - mon);
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year_month_day ymd = sd;
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if (year{Y} != ymd.year())
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goto broken;
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if (m == 0)
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m = static_cast<int>(static_cast<unsigned>(ymd.month()));
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else if (month(m) != ymd.month())
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goto broken;
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if (d == 0)
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d = static_cast<int>(static_cast<unsigned>(ymd.day()));
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else if (day(d) != ymd.day())
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goto broken;
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}
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auto ymd = year{Y}/m/d;
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if (wd != not_a_weekday && ymd.ok())
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{
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if (weekday{static_cast<unsigned>(wd)} != weekday(ymd))
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goto broken;
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}
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fds.ymd = ymd;
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fds.tod = time_of_day<Duration>(hours{h} + minutes{min});
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fds.tod.s_ = detail::decimal_format_seconds<Duration>{s};
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if (wd != not_a_weekday)
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fds.wd = weekday{static_cast<unsigned>(wd)};
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if (abbrev != nullptr)
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*abbrev = std::move(temp_abbrev);
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if (offset != nullptr)
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@ -6208,6 +6301,106 @@ broken:
|
||||
is.setstate(ios_base::failbit);
|
||||
}
|
||||
|
||||
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
|
||||
void
|
||||
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt, year& y,
|
||||
std::basic_string<CharT, Traits, Alloc>* abbrev = nullptr,
|
||||
std::chrono::minutes* offset = nullptr)
|
||||
{
|
||||
using namespace std;
|
||||
using namespace std::chrono;
|
||||
using CT = seconds;
|
||||
fields<CT> fds{};
|
||||
from_stream(is, fmt, fds, abbrev, offset);
|
||||
if (!is.fail())
|
||||
y = fds.ymd.year();
|
||||
}
|
||||
|
||||
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
|
||||
void
|
||||
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt, month& m,
|
||||
std::basic_string<CharT, Traits, Alloc>* abbrev = nullptr,
|
||||
std::chrono::minutes* offset = nullptr)
|
||||
{
|
||||
using namespace std;
|
||||
using namespace std::chrono;
|
||||
using CT = seconds;
|
||||
fields<CT> fds{};
|
||||
from_stream(is, fmt, fds, abbrev, offset);
|
||||
if (!fds.ymd.month().ok())
|
||||
is.setstate(ios::failbit);
|
||||
if (!is.fail())
|
||||
m = fds.ymd.month();
|
||||
}
|
||||
|
||||
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
|
||||
void
|
||||
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt, day& d,
|
||||
std::basic_string<CharT, Traits, Alloc>* abbrev = nullptr,
|
||||
std::chrono::minutes* offset = nullptr)
|
||||
{
|
||||
using namespace std;
|
||||
using namespace std::chrono;
|
||||
using CT = seconds;
|
||||
fields<CT> fds{};
|
||||
from_stream(is, fmt, fds, abbrev, offset);
|
||||
if (!fds.ymd.day().ok())
|
||||
is.setstate(ios::failbit);
|
||||
if (!is.fail())
|
||||
d = fds.ymd.day();
|
||||
}
|
||||
|
||||
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
|
||||
void
|
||||
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt, weekday& wd,
|
||||
std::basic_string<CharT, Traits, Alloc>* abbrev = nullptr,
|
||||
std::chrono::minutes* offset = nullptr)
|
||||
{
|
||||
using namespace std;
|
||||
using namespace std::chrono;
|
||||
using CT = seconds;
|
||||
fields<CT> fds{};
|
||||
from_stream(is, fmt, fds, abbrev, offset);
|
||||
if (!fds.wd.ok())
|
||||
is.setstate(ios::failbit);
|
||||
if (!is.fail())
|
||||
wd = fds.wd;
|
||||
}
|
||||
|
||||
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
|
||||
void
|
||||
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt, year_month& ym,
|
||||
std::basic_string<CharT, Traits, Alloc>* abbrev = nullptr,
|
||||
std::chrono::minutes* offset = nullptr)
|
||||
{
|
||||
using namespace std;
|
||||
using namespace std::chrono;
|
||||
using CT = seconds;
|
||||
fields<CT> fds{};
|
||||
from_stream(is, fmt, fds, abbrev, offset);
|
||||
if (!fds.ymd.month().ok())
|
||||
is.setstate(ios::failbit);
|
||||
if (!is.fail())
|
||||
ym = fds.ymd.year()/fds.ymd.month();
|
||||
}
|
||||
|
||||
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
|
||||
void
|
||||
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt, month_day& md,
|
||||
std::basic_string<CharT, Traits, Alloc>* abbrev = nullptr,
|
||||
std::chrono::minutes* offset = nullptr)
|
||||
{
|
||||
using namespace std;
|
||||
using namespace std::chrono;
|
||||
using CT = seconds;
|
||||
fields<CT> fds{};
|
||||
from_stream(is, fmt, fds, abbrev, offset);
|
||||
if (!fds.ymd.month().ok() || !fds.ymd.day().ok())
|
||||
is.setstate(ios::failbit);
|
||||
if (!is.fail())
|
||||
md = fds.ymd.month()/fds.ymd.day();
|
||||
}
|
||||
|
||||
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
|
||||
void
|
||||
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
|
||||
|
||||
52
test/date_test/format/misc.pass.cpp
Normal file
52
test/date_test/format/misc.pass.cpp
Normal file
@ -0,0 +1,52 @@
|
||||
// The MIT License (MIT)
|
||||
//
|
||||
// Copyright (c) 2016 Howard Hinnant
|
||||
//
|
||||
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
// of this software and associated documentation files (the "Software"), to deal
|
||||
// in the Software without restriction, including without limitation the rights
|
||||
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
// copies of the Software, and to permit persons to whom the Software is
|
||||
// furnished to do so, subject to the following conditions:
|
||||
//
|
||||
// The above copyright notice and this permission notice shall be included in all
|
||||
// copies or substantial portions of the Software.
|
||||
//
|
||||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
// SOFTWARE.
|
||||
|
||||
#include "date.h"
|
||||
#include <cassert>
|
||||
#include <sstream>
|
||||
|
||||
template <class T>
|
||||
void
|
||||
test(const std::string& in_fmt, const std::string& input,
|
||||
const std::string& out_fmt, const std::string& output)
|
||||
{
|
||||
using namespace date;
|
||||
std::istringstream in{input};
|
||||
T t;
|
||||
in >> parse(in_fmt, t);
|
||||
assert(!in.fail());
|
||||
auto s = format(out_fmt, t);
|
||||
assert(s == output);
|
||||
}
|
||||
|
||||
int
|
||||
main()
|
||||
{
|
||||
using namespace date;
|
||||
test<year>("%Y", "2017", "%Y", "2017");
|
||||
test<month>("%m", "3", "%m", "03");
|
||||
test<day>("%d", "25", "%d", "25");
|
||||
test<year_month>("%Y-%m", "2017-03", "%Y-%m", "2017-03");
|
||||
test<year_month>("%y%m", "1703", "%Y-%m", "2017-03");
|
||||
test<month_day>("%m/%d", "3/25", "%m/%d", "03/25");
|
||||
test<weekday>("%w", "3", "%w", "3");
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user