mirror of
https://github.com/HowardHinnant/date.git
synced 2024-12-27 00:14:07 +08:00
to_stream sets failbit if unable to format
* If a formatting flag requests data that is not available in the Streamable object, or if the Streamable object answers !ok(), failbit is set.
This commit is contained in:
Howard Hinnant
parent
0125d330ab
commit
1d9e49ea21
@ -4316,28 +4316,33 @@ operator<<(std::basic_ostream<CharT, Traits>& os, const local_time<Duration>& ut
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// to_stream
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constexpr year nanyear{-32768};
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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{year{0}/0/0};
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year_month_day ymd{nanyear/0/0};
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weekday wd{7u};
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time_of_day<Duration> tod{};
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bool has_tod = false;
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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(time_of_day<Duration> tod_) : tod(tod_), has_tod(true) {}
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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(year_month_day ymd_, time_of_day<Duration> tod_) : ymd(ymd_), tod(tod_),
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has_tod(true) {}
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fields(weekday wd_, time_of_day<Duration> tod_) : wd(wd_), tod(tod_) {}
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fields(weekday wd_, time_of_day<Duration> tod_) : wd(wd_), tod(tod_), has_tod(true) {}
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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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, has_tod(true)
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{}
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};
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@ -4654,7 +4659,12 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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os << CharT{'%'} << modified << *fmt;
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else
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{
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if (!fds.ymd.ok())
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os.setstate(std::ios::failbit);
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if (*fmt == 'c' && !fds.has_tod)
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os.setstate(std::ios::failbit);
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#if !ONLY_C_LOCALE
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if (*fmt == 'c')
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tm = std::tm{};
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auto const& ymd = fds.ymd;
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auto ld = local_days(ymd);
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@ -4713,11 +4723,15 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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case 'C':
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if (command)
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{
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if (modified == CharT{'O'})
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os << CharT{'%'} << modified << *fmt;
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else
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{
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if (!fds.ymd.year().ok())
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os.setstate(std::ios::failbit);
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auto y = static_cast<int>(fds.ymd.year());
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#if !ONLY_C_LOCALE
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if (modified == CharT{})
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#else
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if (modified != CharT{'O'})
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#endif
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{
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save_stream<CharT, Traits> _(os);
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@ -4743,9 +4757,6 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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}
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#endif
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else
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{
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os << CharT{'%'} << modified << *fmt;
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}
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command = nullptr;
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modified = CharT{};
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@ -4757,11 +4768,15 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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case 'e':
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if (command)
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{
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if (modified == CharT{'E'})
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os << CharT{'%'} << modified << *fmt;
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else
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{
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if (!fds.ymd.day().ok())
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os.setstate(std::ios::failbit);
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auto d = static_cast<int>(static_cast<unsigned>(fds.ymd.day()));
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#if !ONLY_C_LOCALE
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if (modified == CharT{})
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#else
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if (modified != CharT{'E'})
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#endif
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{
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save_stream<CharT, Traits> _(os);
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@ -4781,9 +4796,6 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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}
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#endif
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else
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{
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os << CharT{'%'} << modified << *fmt;
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}
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command = nullptr;
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modified = CharT{};
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@ -4796,6 +4808,8 @@ 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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if (!fds.ymd.ok())
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os.setstate(std::ios::failbit);
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auto const& ymd = fds.ymd;
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save_stream<CharT, Traits> _(os);
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os.fill('0');
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@ -4822,6 +4836,8 @@ 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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if (!fds.ymd.ok())
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os.setstate(std::ios::failbit);
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auto const& ymd = fds.ymd;
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save_stream<CharT, Traits> _(os);
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os.fill('0');
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@ -4849,6 +4865,8 @@ 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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if (!fds.ymd.ok())
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os.setstate(std::ios::failbit);
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auto ld = local_days(fds.ymd);
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auto y = year_month_day{ld + days{3}}.year();
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auto start = local_days((y - years{1})/date::dec/thu[last]) + (mon-thu);
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@ -4879,11 +4897,15 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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case 'I':
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if (command)
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{
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if (modified == CharT{'E'})
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os << CharT{'%'} << modified << *fmt;
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else
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{
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if (!fds.has_tod)
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os.setstate(std::ios::failbit);
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auto hms = fds.tod;
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#if !ONLY_C_LOCALE
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if (modified == CharT{})
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#else
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if (modified != CharT{'E'})
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#endif
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{
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if (*fmt == CharT{'I'})
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@ -4900,9 +4922,6 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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}
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#endif
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else
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{
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os << CharT{'%'} << modified << *fmt;
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}
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modified = CharT{};
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command = nullptr;
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@ -4915,6 +4934,8 @@ 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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if (!fds.ymd.ok())
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os.setstate(std::ios::failbit);
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auto ld = local_days(fds.ymd);
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auto y = fds.ymd.year();
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auto doy = ld - local_days(y/jan/1) + days{1};
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@ -4937,11 +4958,15 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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case 'm':
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if (command)
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{
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if (modified == CharT{'E'})
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os << CharT{'%'} << modified << *fmt;
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else
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{
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if (!fds.ymd.month().ok())
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os.setstate(std::ios::failbit);
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auto m = static_cast<unsigned>(fds.ymd.month());
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#if !ONLY_C_LOCALE
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if (modified == CharT{})
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#else
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if (modified != CharT{'E'})
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#endif
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{
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if (m < 10)
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@ -4956,9 +4981,6 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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}
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#endif
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else
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{
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os << CharT{'%'} << modified << *fmt;
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}
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modified = CharT{};
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command = nullptr;
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@ -4969,10 +4991,14 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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case 'M':
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if (command)
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{
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if (modified == CharT{'E'})
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os << CharT{'%'} << modified << *fmt;
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else
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{
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if (!fds.has_tod)
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os.setstate(std::ios::failbit);
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#if !ONLY_C_LOCALE
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if (modified == CharT{})
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#else
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if (modified != CharT{'E'})
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#endif
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{
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if (fds.tod.minutes() < minutes{10})
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@ -4987,9 +5013,6 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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}
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#endif
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else
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{
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os << CharT{'%'} << modified << *fmt;
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}
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modified = CharT{};
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command = nullptr;
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@ -5017,6 +5040,8 @@ 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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if (!fds.has_tod)
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os.setstate(std::ios::failbit);
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#if !ONLY_C_LOCALE
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const CharT f[] = {'%', *fmt};
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tm.tm_hour = static_cast<int>(fds.tod.hours().count());
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@ -5043,6 +5068,8 @@ 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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if (!fds.has_tod)
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os.setstate(std::ios::failbit);
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#if !ONLY_C_LOCALE
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const CharT f[] = {'%', *fmt};
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tm.tm_hour = static_cast<int>(fds.tod.hours().count());
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@ -5082,6 +5109,8 @@ 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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if (!fds.has_tod)
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os.setstate(std::ios::failbit);
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if (fds.tod.hours() < hours{10})
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os << CharT{'0'};
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os << fds.tod.hours().count() << CharT{':'};
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@ -5102,10 +5131,14 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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case 'S':
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if (command)
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{
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if (modified == CharT{'E'})
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os << CharT{'%'} << modified << *fmt;
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else
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{
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if (!fds.has_tod)
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os.setstate(std::ios::failbit);
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#if !ONLY_C_LOCALE
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if (modified == CharT{})
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#else
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if (modified != CharT{'E'})
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#endif
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{
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os << fds.tod.s_;
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@ -5118,9 +5151,6 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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}
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#endif
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else
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{
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os << CharT{'%'} << modified << *fmt;
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}
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modified = CharT{};
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command = nullptr;
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@ -5148,6 +5178,8 @@ 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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if (!fds.has_tod)
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os.setstate(std::ios::failbit);
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os << fds.tod;
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}
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else
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@ -5162,14 +5194,14 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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break;
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case 'u':
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if (command)
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{
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if (modified == CharT{'E'})
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os << CharT{'%'} << modified << *fmt;
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else
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{
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auto wd = extract_weekday(os, fds);
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if (os.fail())
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return os;
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#if !ONLY_C_LOCALE
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if (modified == CharT{})
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#else
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if (modified != CharT{'E'})
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#endif
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{
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os << (wd != 0 ? wd : 7u);
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@ -5182,9 +5214,6 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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}
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#endif
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else
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{
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os << CharT{'%'} << modified << *fmt;
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}
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modified = CharT{};
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command = nullptr;
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@ -5194,13 +5223,17 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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break;
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case 'U':
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if (command)
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{
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if (modified == CharT{'E'})
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os << CharT{'%'} << modified << *fmt;
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else
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{
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auto const& ymd = fds.ymd;
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if (!ymd.ok())
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os.setstate(std::ios::failbit);
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auto ld = local_days(ymd);
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#if !ONLY_C_LOCALE
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if (modified == CharT{})
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#else
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if (modified != CharT{'E'})
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#endif
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{
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auto st = local_days(sun[1]/jan/ymd.year());
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@ -5226,9 +5259,6 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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}
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#endif
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else
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{
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os << CharT{'%'} << modified << *fmt;
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}
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modified = CharT{};
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command = nullptr;
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@ -5239,11 +5269,15 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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case 'V':
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if (command)
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{
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if (modified == CharT{'E'})
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os << CharT{'%'} << modified << *fmt;
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else
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{
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if (!fds.ymd.ok())
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os.setstate(std::ios::failbit);
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auto ld = local_days(fds.ymd);
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#if !ONLY_C_LOCALE
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if (modified == CharT{})
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#else
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if (modified != CharT{'E'})
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#endif
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{
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auto y = year_month_day{ld + days{3}}.year();
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@ -5271,9 +5305,6 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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}
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#endif
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else
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{
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os << CharT{'%'} << modified << *fmt;
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}
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modified = CharT{};
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command = nullptr;
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@ -5315,13 +5346,17 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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break;
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case 'W':
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if (command)
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{
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if (modified == CharT{'E'})
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os << CharT{'%'} << modified << *fmt;
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else
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{
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auto const& ymd = fds.ymd;
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if (!ymd.ok())
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os.setstate(std::ios::failbit);
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auto ld = local_days(ymd);
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#if !ONLY_C_LOCALE
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if (modified == CharT{})
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#else
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if (modified != CharT{'E'})
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#endif
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{
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auto st = local_days(mon[1]/jan/ymd.year());
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@ -5347,9 +5382,6 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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facet.put(os, os, os.fill(), &tm, begin(f), end(f));
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}
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#endif
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else
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{
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os << CharT{'%'} << modified << *fmt;
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}
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modified = CharT{};
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command = nullptr;
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@ -5364,6 +5396,8 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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os << CharT{'%'} << modified << *fmt;
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else
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{
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if (!fds.has_tod)
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os.setstate(std::ios::failbit);
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#if !ONLY_C_LOCALE
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tm = std::tm{};
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tm.tm_sec = static_cast<int>(fds.tod.seconds().count());
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@ -5388,6 +5422,8 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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case 'y':
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if (command)
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{
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if (!fds.ymd.year().ok())
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os.setstate(std::ios::failbit);
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auto y = static_cast<int>(fds.ymd.year());
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#if !ONLY_C_LOCALE
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if (modified == CharT{})
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@ -5415,11 +5451,15 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
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case 'Y':
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if (command)
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{
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if (modified == CharT{'O'})
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os << CharT{'%'} << modified << *fmt;
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else
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{
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if (!fds.ymd.year().ok())
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os.setstate(std::ios::failbit);
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auto y = fds.ymd.year();
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#if !ONLY_C_LOCALE
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if (modified == CharT{})
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#else
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if (modified != CharT{'O'})
|
||||
#endif
|
||||
{
|
||||
os << y;
|
||||
@ -5432,9 +5472,6 @@ to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
|
||||
facet.put(os, os, os.fill(), &tm, begin(f), end(f));
|
||||
}
|
||||
#endif
|
||||
else
|
||||
{
|
||||
os << CharT{'%'} << modified << *fmt;
|
||||
}
|
||||
modified = CharT{};
|
||||
command = nullptr;
|
||||
@ -5572,7 +5609,7 @@ std::basic_ostream<CharT, Traits>&
|
||||
to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const month& m)
|
||||
{
|
||||
using CT = std::chrono::seconds;
|
||||
fields<CT> fds{m/0/0};
|
||||
fields<CT> fds{m/0/nanyear};
|
||||
return to_stream(os, fmt, fds);
|
||||
}
|
||||
|
||||
@ -5582,7 +5619,7 @@ std::basic_ostream<CharT, Traits>&
|
||||
to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const day& d)
|
||||
{
|
||||
using CT = std::chrono::seconds;
|
||||
fields<CT> fds{d/0/0};
|
||||
fields<CT> fds{d/0/nanyear};
|
||||
return to_stream(os, fmt, fds);
|
||||
}
|
||||
|
||||
@ -5612,7 +5649,7 @@ std::basic_ostream<CharT, Traits>&
|
||||
to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const month_day& md)
|
||||
{
|
||||
using CT = std::chrono::seconds;
|
||||
fields<CT> fds{md/0};
|
||||
fields<CT> fds{md/nanyear};
|
||||
return to_stream(os, fmt, fds);
|
||||
}
|
||||
|
||||
|
||||
@ -69,10 +69,10 @@ main()
|
||||
assert(os.str() == "32767-12-31 00:00:01.2096");
|
||||
os.str("");
|
||||
|
||||
os << format("%F %T", jan/1/year::min());
|
||||
assert(os.str() == "-32767-01-01 00:00:00");
|
||||
os << format("%F", jan/1/year::min());
|
||||
assert(os.str() == "-32767-01-01");
|
||||
os.str("");
|
||||
os << format("%F %T", dec/last/year::max());
|
||||
assert(os.str() == "32767-12-31 00:00:00");
|
||||
os << format("%F", dec/last/year::max());
|
||||
assert(os.str() == "32767-12-31");
|
||||
os.str("");
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user