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ton/tdutils/td/utils/date.h
Alex Melman 5c992d6a93 Using Howard Hinnant's free, open-source header-only and thread-safe datetime library. 
https://howardhinnant.github.io/date/date.html
All logs will display a datetime in format "2021-02-23 12:57:21.1023272" UTC, instead of simply displaying double formatted timestamp.

Update ccpp-linux.yml

Soon github actions will use ubuntu 20.04 as latest. Let's avoid surprised and stick to ubuntu-18.04 fow now.
2021-02-23 14:31:58 +03:00

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#ifndef DATE_H
#define DATE_H
// The MIT License (MIT)
//
// Copyright (c) 2015, 2016, 2017 Howard Hinnant
// Copyright (c) 2016 Adrian Colomitchi
// Copyright (c) 2017 Florian Dang
// Copyright (c) 2017 Paul Thompson
// Copyright (c) 2018, 2019 Tomasz Kamiński
// Copyright (c) 2019 Jiangang Zhuang
//
// 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.
//
// Our apologies. When the previous paragraph was written, lowercase had not yet
// been invented (that would involve another several millennia of evolution).
// We did not mean to shout.
#ifndef HAS_STRING_VIEW
# if __cplusplus >= 201703 || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
# define HAS_STRING_VIEW 1
# else
# define HAS_STRING_VIEW 0
# endif
#endif // HAS_STRING_VIEW
#include <cassert>
#include <algorithm>
#include <cctype>
#include <chrono>
#include <climits>
#include <cmath>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <ctime>
#include <ios>
#include <istream>
#include <iterator>
#include <limits>
#include <locale>
#include <memory>
#include <ostream>
#include <ratio>
#include <sstream>
#include <stdexcept>
#include <string>
#if HAS_STRING_VIEW
# include <string_view>
#endif
#include <utility>
#include <type_traits>
#ifdef __GNUC__
# pragma GCC diagnostic push
# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 7)
# pragma GCC diagnostic ignored "-Wpedantic"
# endif
# if __GNUC__ < 5
// GCC 4.9 Bug 61489 Wrong warning with -Wmissing-field-initializers
# pragma GCC diagnostic ignored "-Wmissing-field-initializers"
# endif
#endif
#ifdef _MSC_VER
# pragma warning(push)
// warning C4127: conditional expression is constant
# pragma warning(disable : 4127)
#endif
namespace date
{
//---------------+
// Configuration |
//---------------+
#ifndef ONLY_C_LOCALE
# define ONLY_C_LOCALE 0
#endif
#if defined(_MSC_VER) && (!defined(__clang__) || (_MSC_VER < 1910))
// MSVC
# ifndef _SILENCE_CXX17_UNCAUGHT_EXCEPTION_DEPRECATION_WARNING
# define _SILENCE_CXX17_UNCAUGHT_EXCEPTION_DEPRECATION_WARNING
# endif
# if _MSC_VER < 1910
// before VS2017
# define CONSTDATA const
# define CONSTCD11
# define CONSTCD14
# define NOEXCEPT _NOEXCEPT
# else
// VS2017 and later
# define CONSTDATA constexpr const
# define CONSTCD11 constexpr
# define CONSTCD14 constexpr
# define NOEXCEPT noexcept
# endif
#elif defined(__SUNPRO_CC) && __SUNPRO_CC <= 0x5150
// Oracle Developer Studio 12.6 and earlier
# define CONSTDATA constexpr const
# define CONSTCD11 constexpr
# define CONSTCD14
# define NOEXCEPT noexcept
#elif __cplusplus >= 201402
// C++14
# define CONSTDATA constexpr const
# define CONSTCD11 constexpr
# define CONSTCD14 constexpr
# define NOEXCEPT noexcept
#else
// C++11
# define CONSTDATA constexpr const
# define CONSTCD11 constexpr
# define CONSTCD14
# define NOEXCEPT noexcept
#endif
#ifndef HAS_UNCAUGHT_EXCEPTIONS
# if __cplusplus > 201703 || (defined(_MSVC_LANG) && _MSVC_LANG > 201703L)
# define HAS_UNCAUGHT_EXCEPTIONS 1
# else
# define HAS_UNCAUGHT_EXCEPTIONS 0
# endif
#endif // HAS_UNCAUGHT_EXCEPTIONS
#ifndef HAS_VOID_T
# if __cplusplus >= 201703 || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
# define HAS_VOID_T 1
# else
# define HAS_VOID_T 0
# endif
#endif // HAS_VOID_T
// Protect from Oracle sun macro
#ifdef sun
# undef sun
#endif
// Work around for a NVCC compiler bug which causes it to fail
// to compile std::ratio_{multiply,divide} when used directly
// in the std::chrono::duration template instantiations below
namespace detail {
template <typename R1, typename R2>
using ratio_multiply = decltype(std::ratio_multiply<R1, R2>{});
template <typename R1, typename R2>
using ratio_divide = decltype(std::ratio_divide<R1, R2>{});
} // namespace detail
//-----------+
// Interface |
//-----------+
// durations
using days = std::chrono::duration
<int, detail::ratio_multiply<std::ratio<24>, std::chrono::hours::period>>;
using weeks = std::chrono::duration
<int, detail::ratio_multiply<std::ratio<7>, days::period>>;
using years = std::chrono::duration
<int, detail::ratio_multiply<std::ratio<146097, 400>, days::period>>;
using months = std::chrono::duration
<int, detail::ratio_divide<years::period, std::ratio<12>>>;
// time_point
template <class Duration>
using sys_time = std::chrono::time_point<std::chrono::system_clock, Duration>;
using sys_days = sys_time<days>;
using sys_seconds = sys_time<std::chrono::seconds>;
struct local_t {};
template <class Duration>
using local_time = std::chrono::time_point<local_t, Duration>;
using local_seconds = local_time<std::chrono::seconds>;
using local_days = local_time<days>;
// types
struct last_spec
{
explicit last_spec() = default;
};
class day;
class month;
class year;
class weekday;
class weekday_indexed;
class weekday_last;
class month_day;
class month_day_last;
class month_weekday;
class month_weekday_last;
class year_month;
class year_month_day;
class year_month_day_last;
class year_month_weekday;
class year_month_weekday_last;
// date composition operators
CONSTCD11 year_month operator/(const year& y, const month& m) NOEXCEPT;
CONSTCD11 year_month operator/(const year& y, int m) NOEXCEPT;
CONSTCD11 month_day operator/(const day& d, const month& m) NOEXCEPT;
CONSTCD11 month_day operator/(const day& d, int m) NOEXCEPT;
CONSTCD11 month_day operator/(const month& m, const day& d) NOEXCEPT;
CONSTCD11 month_day operator/(const month& m, int d) NOEXCEPT;
CONSTCD11 month_day operator/(int m, const day& d) NOEXCEPT;
CONSTCD11 month_day_last operator/(const month& m, last_spec) NOEXCEPT;
CONSTCD11 month_day_last operator/(int m, last_spec) NOEXCEPT;
CONSTCD11 month_day_last operator/(last_spec, const month& m) NOEXCEPT;
CONSTCD11 month_day_last operator/(last_spec, int m) NOEXCEPT;
CONSTCD11 month_weekday operator/(const month& m, const weekday_indexed& wdi) NOEXCEPT;
CONSTCD11 month_weekday operator/(int m, const weekday_indexed& wdi) NOEXCEPT;
CONSTCD11 month_weekday operator/(const weekday_indexed& wdi, const month& m) NOEXCEPT;
CONSTCD11 month_weekday operator/(const weekday_indexed& wdi, int m) NOEXCEPT;
CONSTCD11 month_weekday_last operator/(const month& m, const weekday_last& wdl) NOEXCEPT;
CONSTCD11 month_weekday_last operator/(int m, const weekday_last& wdl) NOEXCEPT;
CONSTCD11 month_weekday_last operator/(const weekday_last& wdl, const month& m) NOEXCEPT;
CONSTCD11 month_weekday_last operator/(const weekday_last& wdl, int m) NOEXCEPT;
CONSTCD11 year_month_day operator/(const year_month& ym, const day& d) NOEXCEPT;
CONSTCD11 year_month_day operator/(const year_month& ym, int d) NOEXCEPT;
CONSTCD11 year_month_day operator/(const year& y, const month_day& md) NOEXCEPT;
CONSTCD11 year_month_day operator/(int y, const month_day& md) NOEXCEPT;
CONSTCD11 year_month_day operator/(const month_day& md, const year& y) NOEXCEPT;
CONSTCD11 year_month_day operator/(const month_day& md, int y) NOEXCEPT;
CONSTCD11
year_month_day_last operator/(const year_month& ym, last_spec) NOEXCEPT;
CONSTCD11
year_month_day_last operator/(const year& y, const month_day_last& mdl) NOEXCEPT;
CONSTCD11
year_month_day_last operator/(int y, const month_day_last& mdl) NOEXCEPT;
CONSTCD11
year_month_day_last operator/(const month_day_last& mdl, const year& y) NOEXCEPT;
CONSTCD11
year_month_day_last operator/(const month_day_last& mdl, int y) NOEXCEPT;
CONSTCD11
year_month_weekday
operator/(const year_month& ym, const weekday_indexed& wdi) NOEXCEPT;
CONSTCD11
year_month_weekday
operator/(const year& y, const month_weekday& mwd) NOEXCEPT;
CONSTCD11
year_month_weekday
operator/(int y, const month_weekday& mwd) NOEXCEPT;
CONSTCD11
year_month_weekday
operator/(const month_weekday& mwd, const year& y) NOEXCEPT;
CONSTCD11
year_month_weekday
operator/(const month_weekday& mwd, int y) NOEXCEPT;
CONSTCD11
year_month_weekday_last
operator/(const year_month& ym, const weekday_last& wdl) NOEXCEPT;
CONSTCD11
year_month_weekday_last
operator/(const year& y, const month_weekday_last& mwdl) NOEXCEPT;
CONSTCD11
year_month_weekday_last
operator/(int y, const month_weekday_last& mwdl) NOEXCEPT;
CONSTCD11
year_month_weekday_last
operator/(const month_weekday_last& mwdl, const year& y) NOEXCEPT;
CONSTCD11
year_month_weekday_last
operator/(const month_weekday_last& mwdl, int y) NOEXCEPT;
// Detailed interface
// day
class day
{
unsigned char d_;
public:
day() = default;
explicit CONSTCD11 day(unsigned d) NOEXCEPT;
CONSTCD14 day& operator++() NOEXCEPT;
CONSTCD14 day operator++(int) NOEXCEPT;
CONSTCD14 day& operator--() NOEXCEPT;
CONSTCD14 day operator--(int) NOEXCEPT;
CONSTCD14 day& operator+=(const days& d) NOEXCEPT;
CONSTCD14 day& operator-=(const days& d) NOEXCEPT;
CONSTCD11 explicit operator unsigned() const NOEXCEPT;
CONSTCD11 bool ok() const NOEXCEPT;
};
CONSTCD11 bool operator==(const day& x, const day& y) NOEXCEPT;
CONSTCD11 bool operator!=(const day& x, const day& y) NOEXCEPT;
CONSTCD11 bool operator< (const day& x, const day& y) NOEXCEPT;
CONSTCD11 bool operator> (const day& x, const day& y) NOEXCEPT;
CONSTCD11 bool operator<=(const day& x, const day& y) NOEXCEPT;
CONSTCD11 bool operator>=(const day& x, const day& y) NOEXCEPT;
CONSTCD11 day operator+(const day& x, const days& y) NOEXCEPT;
CONSTCD11 day operator+(const days& x, const day& y) NOEXCEPT;
CONSTCD11 day operator-(const day& x, const days& y) NOEXCEPT;
CONSTCD11 days operator-(const day& x, const day& y) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const day& d);
// month
class month
{
unsigned char m_;
public:
month() = default;
explicit CONSTCD11 month(unsigned m) NOEXCEPT;
CONSTCD14 month& operator++() NOEXCEPT;
CONSTCD14 month operator++(int) NOEXCEPT;
CONSTCD14 month& operator--() NOEXCEPT;
CONSTCD14 month operator--(int) NOEXCEPT;
CONSTCD14 month& operator+=(const months& m) NOEXCEPT;
CONSTCD14 month& operator-=(const months& m) NOEXCEPT;
CONSTCD11 explicit operator unsigned() const NOEXCEPT;
CONSTCD11 bool ok() const NOEXCEPT;
};
CONSTCD11 bool operator==(const month& x, const month& y) NOEXCEPT;
CONSTCD11 bool operator!=(const month& x, const month& y) NOEXCEPT;
CONSTCD11 bool operator< (const month& x, const month& y) NOEXCEPT;
CONSTCD11 bool operator> (const month& x, const month& y) NOEXCEPT;
CONSTCD11 bool operator<=(const month& x, const month& y) NOEXCEPT;
CONSTCD11 bool operator>=(const month& x, const month& y) NOEXCEPT;
CONSTCD14 month operator+(const month& x, const months& y) NOEXCEPT;
CONSTCD14 month operator+(const months& x, const month& y) NOEXCEPT;
CONSTCD14 month operator-(const month& x, const months& y) NOEXCEPT;
CONSTCD14 months operator-(const month& x, const month& y) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const month& m);
// year
class year
{
short y_;
public:
year() = default;
explicit CONSTCD11 year(int y) NOEXCEPT;
CONSTCD14 year& operator++() NOEXCEPT;
CONSTCD14 year operator++(int) NOEXCEPT;
CONSTCD14 year& operator--() NOEXCEPT;
CONSTCD14 year operator--(int) NOEXCEPT;
CONSTCD14 year& operator+=(const years& y) NOEXCEPT;
CONSTCD14 year& operator-=(const years& y) NOEXCEPT;
CONSTCD11 year operator-() const NOEXCEPT;
CONSTCD11 year operator+() const NOEXCEPT;
CONSTCD11 bool is_leap() const NOEXCEPT;
CONSTCD11 explicit operator int() const NOEXCEPT;
CONSTCD11 bool ok() const NOEXCEPT;
static CONSTCD11 year min() NOEXCEPT { return year{-32767}; }
static CONSTCD11 year max() NOEXCEPT { return year{32767}; }
};
CONSTCD11 bool operator==(const year& x, const year& y) NOEXCEPT;
CONSTCD11 bool operator!=(const year& x, const year& y) NOEXCEPT;
CONSTCD11 bool operator< (const year& x, const year& y) NOEXCEPT;
CONSTCD11 bool operator> (const year& x, const year& y) NOEXCEPT;
CONSTCD11 bool operator<=(const year& x, const year& y) NOEXCEPT;
CONSTCD11 bool operator>=(const year& x, const year& y) NOEXCEPT;
CONSTCD11 year operator+(const year& x, const years& y) NOEXCEPT;
CONSTCD11 year operator+(const years& x, const year& y) NOEXCEPT;
CONSTCD11 year operator-(const year& x, const years& y) NOEXCEPT;
CONSTCD11 years operator-(const year& x, const year& y) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const year& y);
// weekday
class weekday
{
unsigned char wd_;
public:
weekday() = default;
explicit CONSTCD11 weekday(unsigned wd) NOEXCEPT;
CONSTCD14 weekday(const sys_days& dp) NOEXCEPT;
CONSTCD14 explicit weekday(const local_days& dp) NOEXCEPT;
CONSTCD14 weekday& operator++() NOEXCEPT;
CONSTCD14 weekday operator++(int) NOEXCEPT;
CONSTCD14 weekday& operator--() NOEXCEPT;
CONSTCD14 weekday operator--(int) NOEXCEPT;
CONSTCD14 weekday& operator+=(const days& d) NOEXCEPT;
CONSTCD14 weekday& operator-=(const days& d) NOEXCEPT;
CONSTCD11 bool ok() const NOEXCEPT;
CONSTCD11 unsigned c_encoding() const NOEXCEPT;
CONSTCD11 unsigned iso_encoding() const NOEXCEPT;
CONSTCD11 weekday_indexed operator[](unsigned index) const NOEXCEPT;
CONSTCD11 weekday_last operator[](last_spec) const NOEXCEPT;
private:
static CONSTCD14 unsigned char weekday_from_days(int z) NOEXCEPT;
friend CONSTCD11 bool operator==(const weekday& x, const weekday& y) NOEXCEPT;
friend CONSTCD14 days operator-(const weekday& x, const weekday& y) NOEXCEPT;
friend CONSTCD14 weekday operator+(const weekday& x, const days& y) NOEXCEPT;
template<class CharT, class Traits>
friend std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const weekday& wd);
friend class weekday_indexed;
};
CONSTCD11 bool operator==(const weekday& x, const weekday& y) NOEXCEPT;
CONSTCD11 bool operator!=(const weekday& x, const weekday& y) NOEXCEPT;
CONSTCD14 weekday operator+(const weekday& x, const days& y) NOEXCEPT;
CONSTCD14 weekday operator+(const days& x, const weekday& y) NOEXCEPT;
CONSTCD14 weekday operator-(const weekday& x, const days& y) NOEXCEPT;
CONSTCD14 days operator-(const weekday& x, const weekday& y) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const weekday& wd);
// weekday_indexed
class weekday_indexed
{
unsigned char wd_ : 4;
unsigned char index_ : 4;
public:
weekday_indexed() = default;
CONSTCD11 weekday_indexed(const date::weekday& wd, unsigned index) NOEXCEPT;
CONSTCD11 date::weekday weekday() const NOEXCEPT;
CONSTCD11 unsigned index() const NOEXCEPT;
CONSTCD11 bool ok() const NOEXCEPT;
};
CONSTCD11 bool operator==(const weekday_indexed& x, const weekday_indexed& y) NOEXCEPT;
CONSTCD11 bool operator!=(const weekday_indexed& x, const weekday_indexed& y) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const weekday_indexed& wdi);
// weekday_last
class weekday_last
{
date::weekday wd_;
public:
explicit CONSTCD11 weekday_last(const date::weekday& wd) NOEXCEPT;
CONSTCD11 date::weekday weekday() const NOEXCEPT;
CONSTCD11 bool ok() const NOEXCEPT;
};
CONSTCD11 bool operator==(const weekday_last& x, const weekday_last& y) NOEXCEPT;
CONSTCD11 bool operator!=(const weekday_last& x, const weekday_last& y) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const weekday_last& wdl);
namespace detail
{
struct unspecified_month_disambiguator {};
} // namespace detail
// year_month
class year_month
{
date::year y_;
date::month m_;
public:
year_month() = default;
CONSTCD11 year_month(const date::year& y, const date::month& m) NOEXCEPT;
CONSTCD11 date::year year() const NOEXCEPT;
CONSTCD11 date::month month() const NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month& operator+=(const months& dm) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month& operator-=(const months& dm) NOEXCEPT;
CONSTCD14 year_month& operator+=(const years& dy) NOEXCEPT;
CONSTCD14 year_month& operator-=(const years& dy) NOEXCEPT;
CONSTCD11 bool ok() const NOEXCEPT;
};
CONSTCD11 bool operator==(const year_month& x, const year_month& y) NOEXCEPT;
CONSTCD11 bool operator!=(const year_month& x, const year_month& y) NOEXCEPT;
CONSTCD11 bool operator< (const year_month& x, const year_month& y) NOEXCEPT;
CONSTCD11 bool operator> (const year_month& x, const year_month& y) NOEXCEPT;
CONSTCD11 bool operator<=(const year_month& x, const year_month& y) NOEXCEPT;
CONSTCD11 bool operator>=(const year_month& x, const year_month& y) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month operator+(const year_month& ym, const months& dm) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month operator+(const months& dm, const year_month& ym) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month operator-(const year_month& ym, const months& dm) NOEXCEPT;
CONSTCD11 months operator-(const year_month& x, const year_month& y) NOEXCEPT;
CONSTCD11 year_month operator+(const year_month& ym, const years& dy) NOEXCEPT;
CONSTCD11 year_month operator+(const years& dy, const year_month& ym) NOEXCEPT;
CONSTCD11 year_month operator-(const year_month& ym, const years& dy) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const year_month& ym);
// month_day
class month_day
{
date::month m_;
date::day d_;
public:
month_day() = default;
CONSTCD11 month_day(const date::month& m, const date::day& d) NOEXCEPT;
CONSTCD11 date::month month() const NOEXCEPT;
CONSTCD11 date::day day() const NOEXCEPT;
CONSTCD14 bool ok() const NOEXCEPT;
};
CONSTCD11 bool operator==(const month_day& x, const month_day& y) NOEXCEPT;
CONSTCD11 bool operator!=(const month_day& x, const month_day& y) NOEXCEPT;
CONSTCD11 bool operator< (const month_day& x, const month_day& y) NOEXCEPT;
CONSTCD11 bool operator> (const month_day& x, const month_day& y) NOEXCEPT;
CONSTCD11 bool operator<=(const month_day& x, const month_day& y) NOEXCEPT;
CONSTCD11 bool operator>=(const month_day& x, const month_day& y) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const month_day& md);
// month_day_last
class month_day_last
{
date::month m_;
public:
CONSTCD11 explicit month_day_last(const date::month& m) NOEXCEPT;
CONSTCD11 date::month month() const NOEXCEPT;
CONSTCD11 bool ok() const NOEXCEPT;
};
CONSTCD11 bool operator==(const month_day_last& x, const month_day_last& y) NOEXCEPT;
CONSTCD11 bool operator!=(const month_day_last& x, const month_day_last& y) NOEXCEPT;
CONSTCD11 bool operator< (const month_day_last& x, const month_day_last& y) NOEXCEPT;
CONSTCD11 bool operator> (const month_day_last& x, const month_day_last& y) NOEXCEPT;
CONSTCD11 bool operator<=(const month_day_last& x, const month_day_last& y) NOEXCEPT;
CONSTCD11 bool operator>=(const month_day_last& x, const month_day_last& y) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const month_day_last& mdl);
// month_weekday
class month_weekday
{
date::month m_;
date::weekday_indexed wdi_;
public:
CONSTCD11 month_weekday(const date::month& m,
const date::weekday_indexed& wdi) NOEXCEPT;
CONSTCD11 date::month month() const NOEXCEPT;
CONSTCD11 date::weekday_indexed weekday_indexed() const NOEXCEPT;
CONSTCD11 bool ok() const NOEXCEPT;
};
CONSTCD11 bool operator==(const month_weekday& x, const month_weekday& y) NOEXCEPT;
CONSTCD11 bool operator!=(const month_weekday& x, const month_weekday& y) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const month_weekday& mwd);
// month_weekday_last
class month_weekday_last
{
date::month m_;
date::weekday_last wdl_;
public:
CONSTCD11 month_weekday_last(const date::month& m,
const date::weekday_last& wd) NOEXCEPT;
CONSTCD11 date::month month() const NOEXCEPT;
CONSTCD11 date::weekday_last weekday_last() const NOEXCEPT;
CONSTCD11 bool ok() const NOEXCEPT;
};
CONSTCD11
bool operator==(const month_weekday_last& x, const month_weekday_last& y) NOEXCEPT;
CONSTCD11
bool operator!=(const month_weekday_last& x, const month_weekday_last& y) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const month_weekday_last& mwdl);
// class year_month_day
class year_month_day
{
date::year y_;
date::month m_;
date::day d_;
public:
year_month_day() = default;
CONSTCD11 year_month_day(const date::year& y, const date::month& m,
const date::day& d) NOEXCEPT;
CONSTCD14 year_month_day(const year_month_day_last& ymdl) NOEXCEPT;
CONSTCD14 year_month_day(sys_days dp) NOEXCEPT;
CONSTCD14 explicit year_month_day(local_days dp) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month_day& operator+=(const months& m) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month_day& operator-=(const months& m) NOEXCEPT;
CONSTCD14 year_month_day& operator+=(const years& y) NOEXCEPT;
CONSTCD14 year_month_day& operator-=(const years& y) NOEXCEPT;
CONSTCD11 date::year year() const NOEXCEPT;
CONSTCD11 date::month month() const NOEXCEPT;
CONSTCD11 date::day day() const NOEXCEPT;
CONSTCD14 operator sys_days() const NOEXCEPT;
CONSTCD14 explicit operator local_days() const NOEXCEPT;
CONSTCD14 bool ok() const NOEXCEPT;
private:
static CONSTCD14 year_month_day from_days(days dp) NOEXCEPT;
CONSTCD14 days to_days() const NOEXCEPT;
};
CONSTCD11 bool operator==(const year_month_day& x, const year_month_day& y) NOEXCEPT;
CONSTCD11 bool operator!=(const year_month_day& x, const year_month_day& y) NOEXCEPT;
CONSTCD11 bool operator< (const year_month_day& x, const year_month_day& y) NOEXCEPT;
CONSTCD11 bool operator> (const year_month_day& x, const year_month_day& y) NOEXCEPT;
CONSTCD11 bool operator<=(const year_month_day& x, const year_month_day& y) NOEXCEPT;
CONSTCD11 bool operator>=(const year_month_day& x, const year_month_day& y) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month_day operator+(const year_month_day& ymd, const months& dm) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month_day operator+(const months& dm, const year_month_day& ymd) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month_day operator-(const year_month_day& ymd, const months& dm) NOEXCEPT;
CONSTCD11 year_month_day operator+(const year_month_day& ymd, const years& dy) NOEXCEPT;
CONSTCD11 year_month_day operator+(const years& dy, const year_month_day& ymd) NOEXCEPT;
CONSTCD11 year_month_day operator-(const year_month_day& ymd, const years& dy) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const year_month_day& ymd);
// year_month_day_last
class year_month_day_last
{
date::year y_;
date::month_day_last mdl_;
public:
CONSTCD11 year_month_day_last(const date::year& y,
const date::month_day_last& mdl) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month_day_last& operator+=(const months& m) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month_day_last& operator-=(const months& m) NOEXCEPT;
CONSTCD14 year_month_day_last& operator+=(const years& y) NOEXCEPT;
CONSTCD14 year_month_day_last& operator-=(const years& y) NOEXCEPT;
CONSTCD11 date::year year() const NOEXCEPT;
CONSTCD11 date::month month() const NOEXCEPT;
CONSTCD11 date::month_day_last month_day_last() const NOEXCEPT;
CONSTCD14 date::day day() const NOEXCEPT;
CONSTCD14 operator sys_days() const NOEXCEPT;
CONSTCD14 explicit operator local_days() const NOEXCEPT;
CONSTCD11 bool ok() const NOEXCEPT;
};
CONSTCD11
bool operator==(const year_month_day_last& x, const year_month_day_last& y) NOEXCEPT;
CONSTCD11
bool operator!=(const year_month_day_last& x, const year_month_day_last& y) NOEXCEPT;
CONSTCD11
bool operator< (const year_month_day_last& x, const year_month_day_last& y) NOEXCEPT;
CONSTCD11
bool operator> (const year_month_day_last& x, const year_month_day_last& y) NOEXCEPT;
CONSTCD11
bool operator<=(const year_month_day_last& x, const year_month_day_last& y) NOEXCEPT;
CONSTCD11
bool operator>=(const year_month_day_last& x, const year_month_day_last& y) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14
year_month_day_last
operator+(const year_month_day_last& ymdl, const months& dm) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14
year_month_day_last
operator+(const months& dm, const year_month_day_last& ymdl) NOEXCEPT;
CONSTCD11
year_month_day_last
operator+(const year_month_day_last& ymdl, const years& dy) NOEXCEPT;
CONSTCD11
year_month_day_last
operator+(const years& dy, const year_month_day_last& ymdl) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14
year_month_day_last
operator-(const year_month_day_last& ymdl, const months& dm) NOEXCEPT;
CONSTCD11
year_month_day_last
operator-(const year_month_day_last& ymdl, const years& dy) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const year_month_day_last& ymdl);
// year_month_weekday
class year_month_weekday
{
date::year y_;
date::month m_;
date::weekday_indexed wdi_;
public:
year_month_weekday() = default;
CONSTCD11 year_month_weekday(const date::year& y, const date::month& m,
const date::weekday_indexed& wdi) NOEXCEPT;
CONSTCD14 year_month_weekday(const sys_days& dp) NOEXCEPT;
CONSTCD14 explicit year_month_weekday(const local_days& dp) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month_weekday& operator+=(const months& m) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month_weekday& operator-=(const months& m) NOEXCEPT;
CONSTCD14 year_month_weekday& operator+=(const years& y) NOEXCEPT;
CONSTCD14 year_month_weekday& operator-=(const years& y) NOEXCEPT;
CONSTCD11 date::year year() const NOEXCEPT;
CONSTCD11 date::month month() const NOEXCEPT;
CONSTCD11 date::weekday weekday() const NOEXCEPT;
CONSTCD11 unsigned index() const NOEXCEPT;
CONSTCD11 date::weekday_indexed weekday_indexed() const NOEXCEPT;
CONSTCD14 operator sys_days() const NOEXCEPT;
CONSTCD14 explicit operator local_days() const NOEXCEPT;
CONSTCD14 bool ok() const NOEXCEPT;
private:
static CONSTCD14 year_month_weekday from_days(days dp) NOEXCEPT;
CONSTCD14 days to_days() const NOEXCEPT;
};
CONSTCD11
bool operator==(const year_month_weekday& x, const year_month_weekday& y) NOEXCEPT;
CONSTCD11
bool operator!=(const year_month_weekday& x, const year_month_weekday& y) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14
year_month_weekday
operator+(const year_month_weekday& ymwd, const months& dm) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14
year_month_weekday
operator+(const months& dm, const year_month_weekday& ymwd) NOEXCEPT;
CONSTCD11
year_month_weekday
operator+(const year_month_weekday& ymwd, const years& dy) NOEXCEPT;
CONSTCD11
year_month_weekday
operator+(const years& dy, const year_month_weekday& ymwd) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14
year_month_weekday
operator-(const year_month_weekday& ymwd, const months& dm) NOEXCEPT;
CONSTCD11
year_month_weekday
operator-(const year_month_weekday& ymwd, const years& dy) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const year_month_weekday& ymwdi);
// year_month_weekday_last
class year_month_weekday_last
{
date::year y_;
date::month m_;
date::weekday_last wdl_;
public:
CONSTCD11 year_month_weekday_last(const date::year& y, const date::month& m,
const date::weekday_last& wdl) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month_weekday_last& operator+=(const months& m) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14 year_month_weekday_last& operator-=(const months& m) NOEXCEPT;
CONSTCD14 year_month_weekday_last& operator+=(const years& y) NOEXCEPT;
CONSTCD14 year_month_weekday_last& operator-=(const years& y) NOEXCEPT;
CONSTCD11 date::year year() const NOEXCEPT;
CONSTCD11 date::month month() const NOEXCEPT;
CONSTCD11 date::weekday weekday() const NOEXCEPT;
CONSTCD11 date::weekday_last weekday_last() const NOEXCEPT;
CONSTCD14 operator sys_days() const NOEXCEPT;
CONSTCD14 explicit operator local_days() const NOEXCEPT;
CONSTCD11 bool ok() const NOEXCEPT;
private:
CONSTCD14 days to_days() const NOEXCEPT;
};
CONSTCD11
bool
operator==(const year_month_weekday_last& x, const year_month_weekday_last& y) NOEXCEPT;
CONSTCD11
bool
operator!=(const year_month_weekday_last& x, const year_month_weekday_last& y) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14
year_month_weekday_last
operator+(const year_month_weekday_last& ymwdl, const months& dm) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14
year_month_weekday_last
operator+(const months& dm, const year_month_weekday_last& ymwdl) NOEXCEPT;
CONSTCD11
year_month_weekday_last
operator+(const year_month_weekday_last& ymwdl, const years& dy) NOEXCEPT;
CONSTCD11
year_month_weekday_last
operator+(const years& dy, const year_month_weekday_last& ymwdl) NOEXCEPT;
template<class = detail::unspecified_month_disambiguator>
CONSTCD14
year_month_weekday_last
operator-(const year_month_weekday_last& ymwdl, const months& dm) NOEXCEPT;
CONSTCD11
year_month_weekday_last
operator-(const year_month_weekday_last& ymwdl, const years& dy) NOEXCEPT;
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const year_month_weekday_last& ymwdl);
#if !defined(_MSC_VER) || (_MSC_VER >= 1900)
inline namespace literals
{
CONSTCD11 date::day operator "" _d(unsigned long long d) NOEXCEPT;
CONSTCD11 date::year operator "" _y(unsigned long long y) NOEXCEPT;
} // inline namespace literals
#endif // !defined(_MSC_VER) || (_MSC_VER >= 1900)
// CONSTDATA date::month January{1};
// CONSTDATA date::month February{2};
// CONSTDATA date::month March{3};
// CONSTDATA date::month April{4};
// CONSTDATA date::month May{5};
// CONSTDATA date::month June{6};
// CONSTDATA date::month July{7};
// CONSTDATA date::month August{8};
// CONSTDATA date::month September{9};
// CONSTDATA date::month October{10};
// CONSTDATA date::month November{11};
// CONSTDATA date::month December{12};
//
// CONSTDATA date::weekday Sunday{0u};
// CONSTDATA date::weekday Monday{1u};
// CONSTDATA date::weekday Tuesday{2u};
// CONSTDATA date::weekday Wednesday{3u};
// CONSTDATA date::weekday Thursday{4u};
// CONSTDATA date::weekday Friday{5u};
// CONSTDATA date::weekday Saturday{6u};
#if HAS_VOID_T
template <class T, class = std::void_t<>>
struct is_clock
: std::false_type
{};
template <class T>
struct is_clock<T, std::void_t<decltype(T::now()), typename T::rep, typename T::period,
typename T::duration, typename T::time_point,
decltype(T::is_steady)>>
: std::true_type
{};
#endif // HAS_VOID_T
//----------------+
// Implementation |
//----------------+
// utilities
namespace detail {
template<class CharT, class Traits = std::char_traits<CharT>>
class save_istream
{
protected:
std::basic_ios<CharT, Traits>& is_;
CharT fill_;
std::ios::fmtflags flags_;
std::streamsize width_;
std::basic_ostream<CharT, Traits>* tie_;
std::locale loc_;
public:
~save_istream()
{
is_.fill(fill_);
is_.flags(flags_);
is_.width(width_);
is_.imbue(loc_);
is_.tie(tie_);
}
save_istream(const save_istream&) = delete;
save_istream& operator=(const save_istream&) = delete;
explicit save_istream(std::basic_ios<CharT, Traits>& is)
: is_(is)
, fill_(is.fill())
, flags_(is.flags())
, width_(is.width(0))
, tie_(is.tie(nullptr))
, loc_(is.getloc())
{
if (tie_ != nullptr)
tie_->flush();
}
};
template<class CharT, class Traits = std::char_traits<CharT>>
class save_ostream
: private save_istream<CharT, Traits>
{
public:
~save_ostream()
{
if ((this->flags_ & std::ios::unitbuf) &&
#if HAS_UNCAUGHT_EXCEPTIONS
std::uncaught_exceptions() == 0 &&
#else
!std::uncaught_exception() &&
#endif
this->is_.good())
this->is_.rdbuf()->pubsync();
}
save_ostream(const save_ostream&) = delete;
save_ostream& operator=(const save_ostream&) = delete;
explicit save_ostream(std::basic_ios<CharT, Traits>& os)
: save_istream<CharT, Traits>(os)
{
}
};
template <class T>
struct choose_trunc_type
{
static const int digits = std::numeric_limits<T>::digits;
using type = typename std::conditional
<
digits < 32,
std::int32_t,
typename std::conditional
<
digits < 64,
std::int64_t,
#ifdef __SIZEOF_INT128__
__int128
#else
std::int64_t
#endif
>::type
>::type;
};
template <class T>
CONSTCD11
inline
typename std::enable_if
<
!std::chrono::treat_as_floating_point<T>::value,
T
>::type
trunc(T t) NOEXCEPT
{
return t;
}
template <class T>
CONSTCD14
inline
typename std::enable_if
<
std::chrono::treat_as_floating_point<T>::value,
T
>::type
trunc(T t) NOEXCEPT
{
using std::numeric_limits;
using I = typename choose_trunc_type<T>::type;
CONSTDATA auto digits = numeric_limits<T>::digits;
static_assert(digits < numeric_limits<I>::digits, "");
CONSTDATA auto max = I{1} << (digits-1);
CONSTDATA auto min = -max;
const auto negative = t < T{0};
if (min <= t && t <= max && t != 0 && t == t)
{
t = static_cast<T>(static_cast<I>(t));
if (t == 0 && negative)
t = -t;
}
return t;
}
template <std::intmax_t Xp, std::intmax_t Yp>
struct static_gcd
{
static const std::intmax_t value = static_gcd<Yp, Xp % Yp>::value;
};
template <std::intmax_t Xp>
struct static_gcd<Xp, 0>
{
static const std::intmax_t value = Xp;
};
template <>
struct static_gcd<0, 0>
{
static const std::intmax_t value = 1;
};
template <class R1, class R2>
struct no_overflow
{
private:
static const std::intmax_t gcd_n1_n2 = static_gcd<R1::num, R2::num>::value;
static const std::intmax_t gcd_d1_d2 = static_gcd<R1::den, R2::den>::value;
static const std::intmax_t n1 = R1::num / gcd_n1_n2;
static const std::intmax_t d1 = R1::den / gcd_d1_d2;
static const std::intmax_t n2 = R2::num / gcd_n1_n2;
static const std::intmax_t d2 = R2::den / gcd_d1_d2;
#ifdef __cpp_constexpr
static const std::intmax_t max = std::numeric_limits<std::intmax_t>::max();
#else
static const std::intmax_t max = LLONG_MAX;
#endif
template <std::intmax_t Xp, std::intmax_t Yp, bool overflow>
struct mul // overflow == false
{
static const std::intmax_t value = Xp * Yp;
};
template <std::intmax_t Xp, std::intmax_t Yp>
struct mul<Xp, Yp, true>
{
static const std::intmax_t value = 1;
};
public:
static const bool value = (n1 <= max / d2) && (n2 <= max / d1);
typedef std::ratio<mul<n1, d2, !value>::value,
mul<n2, d1, !value>::value> type;
};
} // detail
// trunc towards zero
template <class To, class Rep, class Period>
CONSTCD11
inline
typename std::enable_if
<
detail::no_overflow<Period, typename To::period>::value,
To
>::type
trunc(const std::chrono::duration<Rep, Period>& d)
{
return To{detail::trunc(std::chrono::duration_cast<To>(d).count())};
}
template <class To, class Rep, class Period>
CONSTCD11
inline
typename std::enable_if
<
!detail::no_overflow<Period, typename To::period>::value,
To
>::type
trunc(const std::chrono::duration<Rep, Period>& d)
{
using std::chrono::duration_cast;
using std::chrono::duration;
using rep = typename std::common_type<Rep, typename To::rep>::type;
return To{detail::trunc(duration_cast<To>(duration_cast<duration<rep>>(d)).count())};
}
#ifndef HAS_CHRONO_ROUNDING
# if defined(_MSC_FULL_VER) && (_MSC_FULL_VER >= 190023918 || (_MSC_FULL_VER >= 190000000 && defined (__clang__)))
# define HAS_CHRONO_ROUNDING 1
# elif defined(__cpp_lib_chrono) && __cplusplus > 201402 && __cpp_lib_chrono >= 201510
# define HAS_CHRONO_ROUNDING 1
# elif defined(_LIBCPP_VERSION) && __cplusplus > 201402 && _LIBCPP_VERSION >= 3800
# define HAS_CHRONO_ROUNDING 1
# else
# define HAS_CHRONO_ROUNDING 0
# endif
#endif // HAS_CHRONO_ROUNDING
#if HAS_CHRONO_ROUNDING == 0
// round down
template <class To, class Rep, class Period>
CONSTCD14
inline
typename std::enable_if
<
detail::no_overflow<Period, typename To::period>::value,
To
>::type
floor(const std::chrono::duration<Rep, Period>& d)
{
auto t = trunc<To>(d);
if (t > d)
return t - To{1};
return t;
}
template <class To, class Rep, class Period>
CONSTCD14
inline
typename std::enable_if
<
!detail::no_overflow<Period, typename To::period>::value,
To
>::type
floor(const std::chrono::duration<Rep, Period>& d)
{
using rep = typename std::common_type<Rep, typename To::rep>::type;
return floor<To>(floor<std::chrono::duration<rep>>(d));
}
// round to nearest, to even on tie
template <class To, class Rep, class Period>
CONSTCD14
inline
To
round(const std::chrono::duration<Rep, Period>& d)
{
auto t0 = floor<To>(d);
auto t1 = t0 + To{1};
if (t1 == To{0} && t0 < To{0})
t1 = -t1;
auto diff0 = d - t0;
auto diff1 = t1 - d;
if (diff0 == diff1)
{
if (t0 - trunc<To>(t0/2)*2 == To{0})
return t0;
return t1;
}
if (diff0 < diff1)
return t0;
return t1;
}
// round up
template <class To, class Rep, class Period>
CONSTCD14
inline
To
ceil(const std::chrono::duration<Rep, Period>& d)
{
auto t = trunc<To>(d);
if (t < d)
return t + To{1};
return t;
}
template <class Rep, class Period,
class = typename std::enable_if
<
std::numeric_limits<Rep>::is_signed
>::type>
CONSTCD11
std::chrono::duration<Rep, Period>
abs(std::chrono::duration<Rep, Period> d)
{
return d >= d.zero() ? d : -d;
}
// round down
template <class To, class Clock, class FromDuration>
CONSTCD11
inline
std::chrono::time_point<Clock, To>
floor(const std::chrono::time_point<Clock, FromDuration>& tp)
{
using std::chrono::time_point;
return time_point<Clock, To>{date::floor<To>(tp.time_since_epoch())};
}
// round to nearest, to even on tie
template <class To, class Clock, class FromDuration>
CONSTCD11
inline
std::chrono::time_point<Clock, To>
round(const std::chrono::time_point<Clock, FromDuration>& tp)
{
using std::chrono::time_point;
return time_point<Clock, To>{round<To>(tp.time_since_epoch())};
}
// round up
template <class To, class Clock, class FromDuration>
CONSTCD11
inline
std::chrono::time_point<Clock, To>
ceil(const std::chrono::time_point<Clock, FromDuration>& tp)
{
using std::chrono::time_point;
return time_point<Clock, To>{ceil<To>(tp.time_since_epoch())};
}
#else // HAS_CHRONO_ROUNDING == 1
using std::chrono::floor;
using std::chrono::ceil;
using std::chrono::round;
using std::chrono::abs;
#endif // HAS_CHRONO_ROUNDING
namespace detail
{
template <class To, class Rep, class Period>
CONSTCD14
inline
typename std::enable_if
<
!std::chrono::treat_as_floating_point<typename To::rep>::value,
To
>::type
round_i(const std::chrono::duration<Rep, Period>& d)
{
return round<To>(d);
}
template <class To, class Rep, class Period>
CONSTCD14
inline
typename std::enable_if
<
std::chrono::treat_as_floating_point<typename To::rep>::value,
To
>::type
round_i(const std::chrono::duration<Rep, Period>& d)
{
return d;
}
template <class To, class Clock, class FromDuration>
CONSTCD11
inline
std::chrono::time_point<Clock, To>
round_i(const std::chrono::time_point<Clock, FromDuration>& tp)
{
using std::chrono::time_point;
return time_point<Clock, To>{round_i<To>(tp.time_since_epoch())};
}
} // detail
// trunc towards zero
template <class To, class Clock, class FromDuration>
CONSTCD11
inline
std::chrono::time_point<Clock, To>
trunc(const std::chrono::time_point<Clock, FromDuration>& tp)
{
using std::chrono::time_point;
return time_point<Clock, To>{trunc<To>(tp.time_since_epoch())};
}
// day
CONSTCD11 inline day::day(unsigned d) NOEXCEPT : d_(static_cast<decltype(d_)>(d)) {}
CONSTCD14 inline day& day::operator++() NOEXCEPT {++d_; return *this;}
CONSTCD14 inline day day::operator++(int) NOEXCEPT {auto tmp(*this); ++(*this); return tmp;}
CONSTCD14 inline day& day::operator--() NOEXCEPT {--d_; return *this;}
CONSTCD14 inline day day::operator--(int) NOEXCEPT {auto tmp(*this); --(*this); return tmp;}
CONSTCD14 inline day& day::operator+=(const days& d) NOEXCEPT {*this = *this + d; return *this;}
CONSTCD14 inline day& day::operator-=(const days& d) NOEXCEPT {*this = *this - d; return *this;}
CONSTCD11 inline day::operator unsigned() const NOEXCEPT {return d_;}
CONSTCD11 inline bool day::ok() const NOEXCEPT {return 1 <= d_ && d_ <= 31;}
CONSTCD11
inline
bool
operator==(const day& x, const day& y) NOEXCEPT
{
return static_cast<unsigned>(x) == static_cast<unsigned>(y);
}
CONSTCD11
inline
bool
operator!=(const day& x, const day& y) NOEXCEPT
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const day& x, const day& y) NOEXCEPT
{
return static_cast<unsigned>(x) < static_cast<unsigned>(y);
}
CONSTCD11
inline
bool
operator>(const day& x, const day& y) NOEXCEPT
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const day& x, const day& y) NOEXCEPT
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const day& x, const day& y) NOEXCEPT
{
return !(x < y);
}
CONSTCD11
inline
days
operator-(const day& x, const day& y) NOEXCEPT
{
return days{static_cast<days::rep>(static_cast<unsigned>(x)
- static_cast<unsigned>(y))};
}
CONSTCD11
inline
day
operator+(const day& x, const days& y) NOEXCEPT
{
return day{static_cast<unsigned>(x) + static_cast<unsigned>(y.count())};
}
CONSTCD11
inline
day
operator+(const days& x, const day& y) NOEXCEPT
{
return y + x;
}
CONSTCD11
inline
day
operator-(const day& x, const days& y) NOEXCEPT
{
return x + -y;
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const day& d)
{
detail::save_ostream<CharT, Traits> _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
os.width(2);
os << static_cast<unsigned>(d);
if (!d.ok())
os << " is not a valid day";
return os;
}
// month
CONSTCD11 inline month::month(unsigned m) NOEXCEPT : m_(static_cast<decltype(m_)>(m)) {}
CONSTCD14 inline month& month::operator++() NOEXCEPT {*this += months{1}; return *this;}
CONSTCD14 inline month month::operator++(int) NOEXCEPT {auto tmp(*this); ++(*this); return tmp;}
CONSTCD14 inline month& month::operator--() NOEXCEPT {*this -= months{1}; return *this;}
CONSTCD14 inline month month::operator--(int) NOEXCEPT {auto tmp(*this); --(*this); return tmp;}
CONSTCD14
inline
month&
month::operator+=(const months& m) NOEXCEPT
{
*this = *this + m;
return *this;
}
CONSTCD14
inline
month&
month::operator-=(const months& m) NOEXCEPT
{
*this = *this - m;
return *this;
}
CONSTCD11 inline month::operator unsigned() const NOEXCEPT {return m_;}
CONSTCD11 inline bool month::ok() const NOEXCEPT {return 1 <= m_ && m_ <= 12;}
CONSTCD11
inline
bool
operator==(const month& x, const month& y) NOEXCEPT
{
return static_cast<unsigned>(x) == static_cast<unsigned>(y);
}
CONSTCD11
inline
bool
operator!=(const month& x, const month& y) NOEXCEPT
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const month& x, const month& y) NOEXCEPT
{
return static_cast<unsigned>(x) < static_cast<unsigned>(y);
}
CONSTCD11
inline
bool
operator>(const month& x, const month& y) NOEXCEPT
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const month& x, const month& y) NOEXCEPT
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const month& x, const month& y) NOEXCEPT
{
return !(x < y);
}
CONSTCD14
inline
months
operator-(const month& x, const month& y) NOEXCEPT
{
auto const d = static_cast<unsigned>(x) - static_cast<unsigned>(y);
return months(d <= 11 ? d : d + 12);
}
CONSTCD14
inline
month
operator+(const month& x, const months& y) NOEXCEPT
{
auto const mu = static_cast<long long>(static_cast<unsigned>(x)) + y.count() - 1;
auto const yr = (mu >= 0 ? mu : mu-11) / 12;
return month{static_cast<unsigned>(mu - yr * 12 + 1)};
}
CONSTCD14
inline
month
operator+(const months& x, const month& y) NOEXCEPT
{
return y + x;
}
CONSTCD14
inline
month
operator-(const month& x, const months& y) NOEXCEPT
{
return x + -y;
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const month& m)
{
if (m.ok())
{
CharT fmt[] = {'%', 'b', 0};
os << format(os.getloc(), fmt, m);
}
else
os << static_cast<unsigned>(m) << " is not a valid month";
return os;
}
// year
CONSTCD11 inline year::year(int y) NOEXCEPT : y_(static_cast<decltype(y_)>(y)) {}
CONSTCD14 inline year& year::operator++() NOEXCEPT {++y_; return *this;}
CONSTCD14 inline year year::operator++(int) NOEXCEPT {auto tmp(*this); ++(*this); return tmp;}
CONSTCD14 inline year& year::operator--() NOEXCEPT {--y_; return *this;}
CONSTCD14 inline year year::operator--(int) NOEXCEPT {auto tmp(*this); --(*this); return tmp;}
CONSTCD14 inline year& year::operator+=(const years& y) NOEXCEPT {*this = *this + y; return *this;}
CONSTCD14 inline year& year::operator-=(const years& y) NOEXCEPT {*this = *this - y; return *this;}
CONSTCD11 inline year year::operator-() const NOEXCEPT {return year{-y_};}
CONSTCD11 inline year year::operator+() const NOEXCEPT {return *this;}
CONSTCD11
inline
bool
year::is_leap() const NOEXCEPT
{
return y_ % 4 == 0 && (y_ % 100 != 0 || y_ % 400 == 0);
}
CONSTCD11 inline year::operator int() const NOEXCEPT {return y_;}
CONSTCD11
inline
bool
year::ok() const NOEXCEPT
{
return y_ != std::numeric_limits<short>::min();
}
CONSTCD11
inline
bool
operator==(const year& x, const year& y) NOEXCEPT
{
return static_cast<int>(x) == static_cast<int>(y);
}
CONSTCD11
inline
bool
operator!=(const year& x, const year& y) NOEXCEPT
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const year& x, const year& y) NOEXCEPT
{
return static_cast<int>(x) < static_cast<int>(y);
}
CONSTCD11
inline
bool
operator>(const year& x, const year& y) NOEXCEPT
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const year& x, const year& y) NOEXCEPT
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const year& x, const year& y) NOEXCEPT
{
return !(x < y);
}
CONSTCD11
inline
years
operator-(const year& x, const year& y) NOEXCEPT
{
return years{static_cast<int>(x) - static_cast<int>(y)};
}
CONSTCD11
inline
year
operator+(const year& x, const years& y) NOEXCEPT
{
return year{static_cast<int>(x) + y.count()};
}
CONSTCD11
inline
year
operator+(const years& x, const year& y) NOEXCEPT
{
return y + x;
}
CONSTCD11
inline
year
operator-(const year& x, const years& y) NOEXCEPT
{
return year{static_cast<int>(x) - y.count()};
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const year& y)
{
detail::save_ostream<CharT, Traits> _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::internal);
os.width(4 + (y < year{0}));
os.imbue(std::locale::classic());
os << static_cast<int>(y);
if (!y.ok())
os << " is not a valid year";
return os;
}
// weekday
CONSTCD14
inline
unsigned char
weekday::weekday_from_days(int z) NOEXCEPT
{
auto u = static_cast<unsigned>(z);
return static_cast<unsigned char>(z >= -4 ? (u+4) % 7 : u % 7);
}
CONSTCD11
inline
weekday::weekday(unsigned wd) NOEXCEPT
: wd_(static_cast<decltype(wd_)>(wd != 7 ? wd : 0))
{}
CONSTCD14
inline
weekday::weekday(const sys_days& dp) NOEXCEPT
: wd_(weekday_from_days(dp.time_since_epoch().count()))
{}
CONSTCD14
inline
weekday::weekday(const local_days& dp) NOEXCEPT
: wd_(weekday_from_days(dp.time_since_epoch().count()))
{}
CONSTCD14 inline weekday& weekday::operator++() NOEXCEPT {*this += days{1}; return *this;}
CONSTCD14 inline weekday weekday::operator++(int) NOEXCEPT {auto tmp(*this); ++(*this); return tmp;}
CONSTCD14 inline weekday& weekday::operator--() NOEXCEPT {*this -= days{1}; return *this;}
CONSTCD14 inline weekday weekday::operator--(int) NOEXCEPT {auto tmp(*this); --(*this); return tmp;}
CONSTCD14
inline
weekday&
weekday::operator+=(const days& d) NOEXCEPT
{
*this = *this + d;
return *this;
}
CONSTCD14
inline
weekday&
weekday::operator-=(const days& d) NOEXCEPT
{
*this = *this - d;
return *this;
}
CONSTCD11 inline bool weekday::ok() const NOEXCEPT {return wd_ <= 6;}
CONSTCD11
inline
unsigned weekday::c_encoding() const NOEXCEPT
{
return unsigned{wd_};
}
CONSTCD11
inline
unsigned weekday::iso_encoding() const NOEXCEPT
{
return unsigned{((wd_ == 0u) ? 7u : wd_)};
}
CONSTCD11
inline
bool
operator==(const weekday& x, const weekday& y) NOEXCEPT
{
return x.wd_ == y.wd_;
}
CONSTCD11
inline
bool
operator!=(const weekday& x, const weekday& y) NOEXCEPT
{
return !(x == y);
}
CONSTCD14
inline
days
operator-(const weekday& x, const weekday& y) NOEXCEPT
{
auto const wdu = x.wd_ - y.wd_;
auto const wk = (wdu >= 0 ? wdu : wdu-6) / 7;
return days{wdu - wk * 7};
}
CONSTCD14
inline
weekday
operator+(const weekday& x, const days& y) NOEXCEPT
{
auto const wdu = static_cast<long long>(static_cast<unsigned>(x.wd_)) + y.count();
auto const wk = (wdu >= 0 ? wdu : wdu-6) / 7;
return weekday{static_cast<unsigned>(wdu - wk * 7)};
}
CONSTCD14
inline
weekday
operator+(const days& x, const weekday& y) NOEXCEPT
{
return y + x;
}
CONSTCD14
inline
weekday
operator-(const weekday& x, const days& y) NOEXCEPT
{
return x + -y;
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const weekday& wd)
{
if (wd.ok())
{
CharT fmt[] = {'%', 'a', 0};
os << format(fmt, wd);
}
else
os << static_cast<unsigned>(wd.wd_) << " is not a valid weekday";
return os;
}
#if !defined(_MSC_VER) || (_MSC_VER >= 1900)
inline namespace literals
{
CONSTCD11
inline
date::day
operator "" _d(unsigned long long d) NOEXCEPT
{
return date::day{static_cast<unsigned>(d)};
}
CONSTCD11
inline
date::year
operator "" _y(unsigned long long y) NOEXCEPT
{
return date::year(static_cast<int>(y));
}
#endif // !defined(_MSC_VER) || (_MSC_VER >= 1900)
CONSTDATA date::last_spec last{};
CONSTDATA date::month jan{1};
CONSTDATA date::month feb{2};
CONSTDATA date::month mar{3};
CONSTDATA date::month apr{4};
CONSTDATA date::month may{5};
CONSTDATA date::month jun{6};
CONSTDATA date::month jul{7};
CONSTDATA date::month aug{8};
CONSTDATA date::month sep{9};
CONSTDATA date::month oct{10};
CONSTDATA date::month nov{11};
CONSTDATA date::month dec{12};
CONSTDATA date::weekday sun{0u};
CONSTDATA date::weekday mon{1u};
CONSTDATA date::weekday tue{2u};
CONSTDATA date::weekday wed{3u};
CONSTDATA date::weekday thu{4u};
CONSTDATA date::weekday fri{5u};
CONSTDATA date::weekday sat{6u};
#if !defined(_MSC_VER) || (_MSC_VER >= 1900)
} // inline namespace literals
#endif
CONSTDATA date::month January{1};
CONSTDATA date::month February{2};
CONSTDATA date::month March{3};
CONSTDATA date::month April{4};
CONSTDATA date::month May{5};
CONSTDATA date::month June{6};
CONSTDATA date::month July{7};
CONSTDATA date::month August{8};
CONSTDATA date::month September{9};
CONSTDATA date::month October{10};
CONSTDATA date::month November{11};
CONSTDATA date::month December{12};
CONSTDATA date::weekday Monday{1};
CONSTDATA date::weekday Tuesday{2};
CONSTDATA date::weekday Wednesday{3};
CONSTDATA date::weekday Thursday{4};
CONSTDATA date::weekday Friday{5};
CONSTDATA date::weekday Saturday{6};
CONSTDATA date::weekday Sunday{7};
// weekday_indexed
CONSTCD11
inline
weekday
weekday_indexed::weekday() const NOEXCEPT
{
return date::weekday{static_cast<unsigned>(wd_)};
}
CONSTCD11 inline unsigned weekday_indexed::index() const NOEXCEPT {return index_;}
CONSTCD11
inline
bool
weekday_indexed::ok() const NOEXCEPT
{
return weekday().ok() && 1 <= index_ && index_ <= 5;
}
#ifdef __GNUC__
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wconversion"
#endif // __GNUC__
CONSTCD11
inline
weekday_indexed::weekday_indexed(const date::weekday& wd, unsigned index) NOEXCEPT
: wd_(static_cast<decltype(wd_)>(static_cast<unsigned>(wd.wd_)))
, index_(static_cast<decltype(index_)>(index))
{}
#ifdef __GNUC__
# pragma GCC diagnostic pop
#endif // __GNUC__
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const weekday_indexed& wdi)
{
os << wdi.weekday() << '[' << wdi.index();
if (!(1 <= wdi.index() && wdi.index() <= 5))
os << " is not a valid index";
os << ']';
return os;
}
CONSTCD11
inline
weekday_indexed
weekday::operator[](unsigned index) const NOEXCEPT
{
return {*this, index};
}
CONSTCD11
inline
bool
operator==(const weekday_indexed& x, const weekday_indexed& y) NOEXCEPT
{
return x.weekday() == y.weekday() && x.index() == y.index();
}
CONSTCD11
inline
bool
operator!=(const weekday_indexed& x, const weekday_indexed& y) NOEXCEPT
{
return !(x == y);
}
// weekday_last
CONSTCD11 inline date::weekday weekday_last::weekday() const NOEXCEPT {return wd_;}
CONSTCD11 inline bool weekday_last::ok() const NOEXCEPT {return wd_.ok();}
CONSTCD11 inline weekday_last::weekday_last(const date::weekday& wd) NOEXCEPT : wd_(wd) {}
CONSTCD11
inline
bool
operator==(const weekday_last& x, const weekday_last& y) NOEXCEPT
{
return x.weekday() == y.weekday();
}
CONSTCD11
inline
bool
operator!=(const weekday_last& x, const weekday_last& y) NOEXCEPT
{
return !(x == y);
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const weekday_last& wdl)
{
return os << wdl.weekday() << "[last]";
}
CONSTCD11
inline
weekday_last
weekday::operator[](last_spec) const NOEXCEPT
{
return weekday_last{*this};
}
// year_month
CONSTCD11
inline
year_month::year_month(const date::year& y, const date::month& m) NOEXCEPT
: y_(y)
, m_(m)
{}
CONSTCD11 inline year year_month::year() const NOEXCEPT {return y_;}
CONSTCD11 inline month year_month::month() const NOEXCEPT {return m_;}
CONSTCD11 inline bool year_month::ok() const NOEXCEPT {return y_.ok() && m_.ok();}
template<class>
CONSTCD14
inline
year_month&
year_month::operator+=(const months& dm) NOEXCEPT
{
*this = *this + dm;
return *this;
}
template<class>
CONSTCD14
inline
year_month&
year_month::operator-=(const months& dm) NOEXCEPT
{
*this = *this - dm;
return *this;
}
CONSTCD14
inline
year_month&
year_month::operator+=(const years& dy) NOEXCEPT
{
*this = *this + dy;
return *this;
}
CONSTCD14
inline
year_month&
year_month::operator-=(const years& dy) NOEXCEPT
{
*this = *this - dy;
return *this;
}
CONSTCD11
inline
bool
operator==(const year_month& x, const year_month& y) NOEXCEPT
{
return x.year() == y.year() && x.month() == y.month();
}
CONSTCD11
inline
bool
operator!=(const year_month& x, const year_month& y) NOEXCEPT
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const year_month& x, const year_month& y) NOEXCEPT
{
return x.year() < y.year() ? true
: (x.year() > y.year() ? false
: (x.month() < y.month()));
}
CONSTCD11
inline
bool
operator>(const year_month& x, const year_month& y) NOEXCEPT
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const year_month& x, const year_month& y) NOEXCEPT
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const year_month& x, const year_month& y) NOEXCEPT
{
return !(x < y);
}
template<class>
CONSTCD14
inline
year_month
operator+(const year_month& ym, const months& dm) NOEXCEPT
{
auto dmi = static_cast<int>(static_cast<unsigned>(ym.month())) - 1 + dm.count();
auto dy = (dmi >= 0 ? dmi : dmi-11) / 12;
dmi = dmi - dy * 12 + 1;
return (ym.year() + years(dy)) / month(static_cast<unsigned>(dmi));
}
template<class>
CONSTCD14
inline
year_month
operator+(const months& dm, const year_month& ym) NOEXCEPT
{
return ym + dm;
}
template<class>
CONSTCD14
inline
year_month
operator-(const year_month& ym, const months& dm) NOEXCEPT
{
return ym + -dm;
}
CONSTCD11
inline
months
operator-(const year_month& x, const year_month& y) NOEXCEPT
{
return (x.year() - y.year()) +
months(static_cast<unsigned>(x.month()) - static_cast<unsigned>(y.month()));
}
CONSTCD11
inline
year_month
operator+(const year_month& ym, const years& dy) NOEXCEPT
{
return (ym.year() + dy) / ym.month();
}
CONSTCD11
inline
year_month
operator+(const years& dy, const year_month& ym) NOEXCEPT
{
return ym + dy;
}
CONSTCD11
inline
year_month
operator-(const year_month& ym, const years& dy) NOEXCEPT
{
return ym + -dy;
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const year_month& ym)
{
return os << ym.year() << '/' << ym.month();
}
// month_day
CONSTCD11
inline
month_day::month_day(const date::month& m, const date::day& d) NOEXCEPT
: m_(m)
, d_(d)
{}
CONSTCD11 inline date::month month_day::month() const NOEXCEPT {return m_;}
CONSTCD11 inline date::day month_day::day() const NOEXCEPT {return d_;}
CONSTCD14
inline
bool
month_day::ok() const NOEXCEPT
{
CONSTDATA date::day d[] =
{
date::day(31), date::day(29), date::day(31),
date::day(30), date::day(31), date::day(30),
date::day(31), date::day(31), date::day(30),
date::day(31), date::day(30), date::day(31)
};
return m_.ok() && date::day{1} <= d_ && d_ <= d[static_cast<unsigned>(m_)-1];
}
CONSTCD11
inline
bool
operator==(const month_day& x, const month_day& y) NOEXCEPT
{
return x.month() == y.month() && x.day() == y.day();
}
CONSTCD11
inline
bool
operator!=(const month_day& x, const month_day& y) NOEXCEPT
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const month_day& x, const month_day& y) NOEXCEPT
{
return x.month() < y.month() ? true
: (x.month() > y.month() ? false
: (x.day() < y.day()));
}
CONSTCD11
inline
bool
operator>(const month_day& x, const month_day& y) NOEXCEPT
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const month_day& x, const month_day& y) NOEXCEPT
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const month_day& x, const month_day& y) NOEXCEPT
{
return !(x < y);
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const month_day& md)
{
return os << md.month() << '/' << md.day();
}
// month_day_last
CONSTCD11 inline month month_day_last::month() const NOEXCEPT {return m_;}
CONSTCD11 inline bool month_day_last::ok() const NOEXCEPT {return m_.ok();}
CONSTCD11 inline month_day_last::month_day_last(const date::month& m) NOEXCEPT : m_(m) {}
CONSTCD11
inline
bool
operator==(const month_day_last& x, const month_day_last& y) NOEXCEPT
{
return x.month() == y.month();
}
CONSTCD11
inline
bool
operator!=(const month_day_last& x, const month_day_last& y) NOEXCEPT
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const month_day_last& x, const month_day_last& y) NOEXCEPT
{
return x.month() < y.month();
}
CONSTCD11
inline
bool
operator>(const month_day_last& x, const month_day_last& y) NOEXCEPT
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const month_day_last& x, const month_day_last& y) NOEXCEPT
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const month_day_last& x, const month_day_last& y) NOEXCEPT
{
return !(x < y);
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const month_day_last& mdl)
{
return os << mdl.month() << "/last";
}
// month_weekday
CONSTCD11
inline
month_weekday::month_weekday(const date::month& m,
const date::weekday_indexed& wdi) NOEXCEPT
: m_(m)
, wdi_(wdi)
{}
CONSTCD11 inline month month_weekday::month() const NOEXCEPT {return m_;}
CONSTCD11
inline
weekday_indexed
month_weekday::weekday_indexed() const NOEXCEPT
{
return wdi_;
}
CONSTCD11
inline
bool
month_weekday::ok() const NOEXCEPT
{
return m_.ok() && wdi_.ok();
}
CONSTCD11
inline
bool
operator==(const month_weekday& x, const month_weekday& y) NOEXCEPT
{
return x.month() == y.month() && x.weekday_indexed() == y.weekday_indexed();
}
CONSTCD11
inline
bool
operator!=(const month_weekday& x, const month_weekday& y) NOEXCEPT
{
return !(x == y);
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const month_weekday& mwd)
{
return os << mwd.month() << '/' << mwd.weekday_indexed();
}
// month_weekday_last
CONSTCD11
inline
month_weekday_last::month_weekday_last(const date::month& m,
const date::weekday_last& wdl) NOEXCEPT
: m_(m)
, wdl_(wdl)
{}
CONSTCD11 inline month month_weekday_last::month() const NOEXCEPT {return m_;}
CONSTCD11
inline
weekday_last
month_weekday_last::weekday_last() const NOEXCEPT
{
return wdl_;
}
CONSTCD11
inline
bool
month_weekday_last::ok() const NOEXCEPT
{
return m_.ok() && wdl_.ok();
}
CONSTCD11
inline
bool
operator==(const month_weekday_last& x, const month_weekday_last& y) NOEXCEPT
{
return x.month() == y.month() && x.weekday_last() == y.weekday_last();
}
CONSTCD11
inline
bool
operator!=(const month_weekday_last& x, const month_weekday_last& y) NOEXCEPT
{
return !(x == y);
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const month_weekday_last& mwdl)
{
return os << mwdl.month() << '/' << mwdl.weekday_last();
}
// year_month_day_last
CONSTCD11
inline
year_month_day_last::year_month_day_last(const date::year& y,
const date::month_day_last& mdl) NOEXCEPT
: y_(y)
, mdl_(mdl)
{}
template<class>
CONSTCD14
inline
year_month_day_last&
year_month_day_last::operator+=(const months& m) NOEXCEPT
{
*this = *this + m;
return *this;
}
template<class>
CONSTCD14
inline
year_month_day_last&
year_month_day_last::operator-=(const months& m) NOEXCEPT
{
*this = *this - m;
return *this;
}
CONSTCD14
inline
year_month_day_last&
year_month_day_last::operator+=(const years& y) NOEXCEPT
{
*this = *this + y;
return *this;
}
CONSTCD14
inline
year_month_day_last&
year_month_day_last::operator-=(const years& y) NOEXCEPT
{
*this = *this - y;
return *this;
}
CONSTCD11 inline year year_month_day_last::year() const NOEXCEPT {return y_;}
CONSTCD11 inline month year_month_day_last::month() const NOEXCEPT {return mdl_.month();}
CONSTCD11
inline
month_day_last
year_month_day_last::month_day_last() const NOEXCEPT
{
return mdl_;
}
CONSTCD14
inline
day
year_month_day_last::day() const NOEXCEPT
{
CONSTDATA date::day d[] =
{
date::day(31), date::day(28), date::day(31),
date::day(30), date::day(31), date::day(30),
date::day(31), date::day(31), date::day(30),
date::day(31), date::day(30), date::day(31)
};
return (month() != February || !y_.is_leap()) && mdl_.ok() ?
d[static_cast<unsigned>(month()) - 1] : date::day{29};
}
CONSTCD14
inline
year_month_day_last::operator sys_days() const NOEXCEPT
{
return sys_days(year()/month()/day());
}
CONSTCD14
inline
year_month_day_last::operator local_days() const NOEXCEPT
{
return local_days(year()/month()/day());
}
CONSTCD11
inline
bool
year_month_day_last::ok() const NOEXCEPT
{
return y_.ok() && mdl_.ok();
}
CONSTCD11
inline
bool
operator==(const year_month_day_last& x, const year_month_day_last& y) NOEXCEPT
{
return x.year() == y.year() && x.month_day_last() == y.month_day_last();
}
CONSTCD11
inline
bool
operator!=(const year_month_day_last& x, const year_month_day_last& y) NOEXCEPT
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const year_month_day_last& x, const year_month_day_last& y) NOEXCEPT
{
return x.year() < y.year() ? true
: (x.year() > y.year() ? false
: (x.month_day_last() < y.month_day_last()));
}
CONSTCD11
inline
bool
operator>(const year_month_day_last& x, const year_month_day_last& y) NOEXCEPT
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const year_month_day_last& x, const year_month_day_last& y) NOEXCEPT
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const year_month_day_last& x, const year_month_day_last& y) NOEXCEPT
{
return !(x < y);
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const year_month_day_last& ymdl)
{
return os << ymdl.year() << '/' << ymdl.month_day_last();
}
template<class>
CONSTCD14
inline
year_month_day_last
operator+(const year_month_day_last& ymdl, const months& dm) NOEXCEPT
{
return (ymdl.year() / ymdl.month() + dm) / last;
}
template<class>
CONSTCD14
inline
year_month_day_last
operator+(const months& dm, const year_month_day_last& ymdl) NOEXCEPT
{
return ymdl + dm;
}
template<class>
CONSTCD14
inline
year_month_day_last
operator-(const year_month_day_last& ymdl, const months& dm) NOEXCEPT
{
return ymdl + (-dm);
}
CONSTCD11
inline
year_month_day_last
operator+(const year_month_day_last& ymdl, const years& dy) NOEXCEPT
{
return {ymdl.year()+dy, ymdl.month_day_last()};
}
CONSTCD11
inline
year_month_day_last
operator+(const years& dy, const year_month_day_last& ymdl) NOEXCEPT
{
return ymdl + dy;
}
CONSTCD11
inline
year_month_day_last
operator-(const year_month_day_last& ymdl, const years& dy) NOEXCEPT
{
return ymdl + (-dy);
}
// year_month_day
CONSTCD11
inline
year_month_day::year_month_day(const date::year& y, const date::month& m,
const date::day& d) NOEXCEPT
: y_(y)
, m_(m)
, d_(d)
{}
CONSTCD14
inline
year_month_day::year_month_day(const year_month_day_last& ymdl) NOEXCEPT
: y_(ymdl.year())
, m_(ymdl.month())
, d_(ymdl.day())
{}
CONSTCD14
inline
year_month_day::year_month_day(sys_days dp) NOEXCEPT
: year_month_day(from_days(dp.time_since_epoch()))
{}
CONSTCD14
inline
year_month_day::year_month_day(local_days dp) NOEXCEPT
: year_month_day(from_days(dp.time_since_epoch()))
{}
CONSTCD11 inline year year_month_day::year() const NOEXCEPT {return y_;}
CONSTCD11 inline month year_month_day::month() const NOEXCEPT {return m_;}
CONSTCD11 inline day year_month_day::day() const NOEXCEPT {return d_;}
template<class>
CONSTCD14
inline
year_month_day&
year_month_day::operator+=(const months& m) NOEXCEPT
{
*this = *this + m;
return *this;
}
template<class>
CONSTCD14
inline
year_month_day&
year_month_day::operator-=(const months& m) NOEXCEPT
{
*this = *this - m;
return *this;
}
CONSTCD14
inline
year_month_day&
year_month_day::operator+=(const years& y) NOEXCEPT
{
*this = *this + y;
return *this;
}
CONSTCD14
inline
year_month_day&
year_month_day::operator-=(const years& y) NOEXCEPT
{
*this = *this - y;
return *this;
}
CONSTCD14
inline
days
year_month_day::to_days() const NOEXCEPT
{
static_assert(std::numeric_limits<unsigned>::digits >= 18,
"This algorithm has not been ported to a 16 bit unsigned integer");
static_assert(std::numeric_limits<int>::digits >= 20,
"This algorithm has not been ported to a 16 bit signed integer");
auto const y = static_cast<int>(y_) - (m_ <= February);
auto const m = static_cast<unsigned>(m_);
auto const d = static_cast<unsigned>(d_);
auto const era = (y >= 0 ? y : y-399) / 400;
auto const yoe = static_cast<unsigned>(y - era * 400); // [0, 399]
auto const doy = (153*(m > 2 ? m-3 : m+9) + 2)/5 + d-1; // [0, 365]
auto const doe = yoe * 365 + yoe/4 - yoe/100 + doy; // [0, 146096]
return days{era * 146097 + static_cast<int>(doe) - 719468};
}
CONSTCD14
inline
year_month_day::operator sys_days() const NOEXCEPT
{
return sys_days{to_days()};
}
CONSTCD14
inline
year_month_day::operator local_days() const NOEXCEPT
{
return local_days{to_days()};
}
CONSTCD14
inline
bool
year_month_day::ok() const NOEXCEPT
{
if (!(y_.ok() && m_.ok()))
return false;
return date::day{1} <= d_ && d_ <= (y_ / m_ / last).day();
}
CONSTCD11
inline
bool
operator==(const year_month_day& x, const year_month_day& y) NOEXCEPT
{
return x.year() == y.year() && x.month() == y.month() && x.day() == y.day();
}
CONSTCD11
inline
bool
operator!=(const year_month_day& x, const year_month_day& y) NOEXCEPT
{
return !(x == y);
}
CONSTCD11
inline
bool
operator<(const year_month_day& x, const year_month_day& y) NOEXCEPT
{
return x.year() < y.year() ? true
: (x.year() > y.year() ? false
: (x.month() < y.month() ? true
: (x.month() > y.month() ? false
: (x.day() < y.day()))));
}
CONSTCD11
inline
bool
operator>(const year_month_day& x, const year_month_day& y) NOEXCEPT
{
return y < x;
}
CONSTCD11
inline
bool
operator<=(const year_month_day& x, const year_month_day& y) NOEXCEPT
{
return !(y < x);
}
CONSTCD11
inline
bool
operator>=(const year_month_day& x, const year_month_day& y) NOEXCEPT
{
return !(x < y);
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const year_month_day& ymd)
{
detail::save_ostream<CharT, Traits> _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
os.imbue(std::locale::classic());
os << ymd.year() << '-';
os.width(2);
os << static_cast<unsigned>(ymd.month()) << '-';
os << ymd.day();
if (!ymd.ok())
os << " is not a valid date";
return os;
}
CONSTCD14
inline
year_month_day
year_month_day::from_days(days dp) NOEXCEPT
{
static_assert(std::numeric_limits<unsigned>::digits >= 18,
"This algorithm has not been ported to a 16 bit unsigned integer");
static_assert(std::numeric_limits<int>::digits >= 20,
"This algorithm has not been ported to a 16 bit signed integer");
auto const z = dp.count() + 719468;
auto const era = (z >= 0 ? z : z - 146096) / 146097;
auto const doe = static_cast<unsigned>(z - era * 146097); // [0, 146096]
auto const yoe = (doe - doe/1460 + doe/36524 - doe/146096) / 365; // [0, 399]
auto const y = static_cast<days::rep>(yoe) + era * 400;
auto const doy = doe - (365*yoe + yoe/4 - yoe/100); // [0, 365]
auto const mp = (5*doy + 2)/153; // [0, 11]
auto const d = doy - (153*mp+2)/5 + 1; // [1, 31]
auto const m = mp < 10 ? mp+3 : mp-9; // [1, 12]
return year_month_day{date::year{y + (m <= 2)}, date::month(m), date::day(d)};
}
template<class>
CONSTCD14
inline
year_month_day
operator+(const year_month_day& ymd, const months& dm) NOEXCEPT
{
return (ymd.year() / ymd.month() + dm) / ymd.day();
}
template<class>
CONSTCD14
inline
year_month_day
operator+(const months& dm, const year_month_day& ymd) NOEXCEPT
{
return ymd + dm;
}
template<class>
CONSTCD14
inline
year_month_day
operator-(const year_month_day& ymd, const months& dm) NOEXCEPT
{
return ymd + (-dm);
}
CONSTCD11
inline
year_month_day
operator+(const year_month_day& ymd, const years& dy) NOEXCEPT
{
return (ymd.year() + dy) / ymd.month() / ymd.day();
}
CONSTCD11
inline
year_month_day
operator+(const years& dy, const year_month_day& ymd) NOEXCEPT
{
return ymd + dy;
}
CONSTCD11
inline
year_month_day
operator-(const year_month_day& ymd, const years& dy) NOEXCEPT
{
return ymd + (-dy);
}
// year_month_weekday
CONSTCD11
inline
year_month_weekday::year_month_weekday(const date::year& y, const date::month& m,
const date::weekday_indexed& wdi)
NOEXCEPT
: y_(y)
, m_(m)
, wdi_(wdi)
{}
CONSTCD14
inline
year_month_weekday::year_month_weekday(const sys_days& dp) NOEXCEPT
: year_month_weekday(from_days(dp.time_since_epoch()))
{}
CONSTCD14
inline
year_month_weekday::year_month_weekday(const local_days& dp) NOEXCEPT
: year_month_weekday(from_days(dp.time_since_epoch()))
{}
template<class>
CONSTCD14
inline
year_month_weekday&
year_month_weekday::operator+=(const months& m) NOEXCEPT
{
*this = *this + m;
return *this;
}
template<class>
CONSTCD14
inline
year_month_weekday&
year_month_weekday::operator-=(const months& m) NOEXCEPT
{
*this = *this - m;
return *this;
}
CONSTCD14
inline
year_month_weekday&
year_month_weekday::operator+=(const years& y) NOEXCEPT
{
*this = *this + y;
return *this;
}
CONSTCD14
inline
year_month_weekday&
year_month_weekday::operator-=(const years& y) NOEXCEPT
{
*this = *this - y;
return *this;
}
CONSTCD11 inline year year_month_weekday::year() const NOEXCEPT {return y_;}
CONSTCD11 inline month year_month_weekday::month() const NOEXCEPT {return m_;}
CONSTCD11
inline
weekday
year_month_weekday::weekday() const NOEXCEPT
{
return wdi_.weekday();
}
CONSTCD11
inline
unsigned
year_month_weekday::index() const NOEXCEPT
{
return wdi_.index();
}
CONSTCD11
inline
weekday_indexed
year_month_weekday::weekday_indexed() const NOEXCEPT
{
return wdi_;
}
CONSTCD14
inline
year_month_weekday::operator sys_days() const NOEXCEPT
{
return sys_days{to_days()};
}
CONSTCD14
inline
year_month_weekday::operator local_days() const NOEXCEPT
{
return local_days{to_days()};
}
CONSTCD14
inline
bool
year_month_weekday::ok() const NOEXCEPT
{
if (!y_.ok() || !m_.ok() || !wdi_.weekday().ok() || wdi_.index() < 1)
return false;
if (wdi_.index() <= 4)
return true;
auto d2 = wdi_.weekday() - date::weekday(static_cast<sys_days>(y_/m_/1)) +
days((wdi_.index()-1)*7 + 1);
return static_cast<unsigned>(d2.count()) <= static_cast<unsigned>((y_/m_/last).day());
}
CONSTCD14
inline
year_month_weekday
year_month_weekday::from_days(days d) NOEXCEPT
{
sys_days dp{d};
auto const wd = date::weekday(dp);
auto const ymd = year_month_day(dp);
return {ymd.year(), ymd.month(), wd[(static_cast<unsigned>(ymd.day())-1)/7+1]};
}
CONSTCD14
inline
days
year_month_weekday::to_days() const NOEXCEPT
{
auto d = sys_days(y_/m_/1);
return (d + (wdi_.weekday() - date::weekday(d) + days{(wdi_.index()-1)*7})
).time_since_epoch();
}
CONSTCD11
inline
bool
operator==(const year_month_weekday& x, const year_month_weekday& y) NOEXCEPT
{
return x.year() == y.year() && x.month() == y.month() &&
x.weekday_indexed() == y.weekday_indexed();
}
CONSTCD11
inline
bool
operator!=(const year_month_weekday& x, const year_month_weekday& y) NOEXCEPT
{
return !(x == y);
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const year_month_weekday& ymwdi)
{
return os << ymwdi.year() << '/' << ymwdi.month()
<< '/' << ymwdi.weekday_indexed();
}
template<class>
CONSTCD14
inline
year_month_weekday
operator+(const year_month_weekday& ymwd, const months& dm) NOEXCEPT
{
return (ymwd.year() / ymwd.month() + dm) / ymwd.weekday_indexed();
}
template<class>
CONSTCD14
inline
year_month_weekday
operator+(const months& dm, const year_month_weekday& ymwd) NOEXCEPT
{
return ymwd + dm;
}
template<class>
CONSTCD14
inline
year_month_weekday
operator-(const year_month_weekday& ymwd, const months& dm) NOEXCEPT
{
return ymwd + (-dm);
}
CONSTCD11
inline
year_month_weekday
operator+(const year_month_weekday& ymwd, const years& dy) NOEXCEPT
{
return {ymwd.year()+dy, ymwd.month(), ymwd.weekday_indexed()};
}
CONSTCD11
inline
year_month_weekday
operator+(const years& dy, const year_month_weekday& ymwd) NOEXCEPT
{
return ymwd + dy;
}
CONSTCD11
inline
year_month_weekday
operator-(const year_month_weekday& ymwd, const years& dy) NOEXCEPT
{
return ymwd + (-dy);
}
// year_month_weekday_last
CONSTCD11
inline
year_month_weekday_last::year_month_weekday_last(const date::year& y,
const date::month& m,
const date::weekday_last& wdl) NOEXCEPT
: y_(y)
, m_(m)
, wdl_(wdl)
{}
template<class>
CONSTCD14
inline
year_month_weekday_last&
year_month_weekday_last::operator+=(const months& m) NOEXCEPT
{
*this = *this + m;
return *this;
}
template<class>
CONSTCD14
inline
year_month_weekday_last&
year_month_weekday_last::operator-=(const months& m) NOEXCEPT
{
*this = *this - m;
return *this;
}
CONSTCD14
inline
year_month_weekday_last&
year_month_weekday_last::operator+=(const years& y) NOEXCEPT
{
*this = *this + y;
return *this;
}
CONSTCD14
inline
year_month_weekday_last&
year_month_weekday_last::operator-=(const years& y) NOEXCEPT
{
*this = *this - y;
return *this;
}
CONSTCD11 inline year year_month_weekday_last::year() const NOEXCEPT {return y_;}
CONSTCD11 inline month year_month_weekday_last::month() const NOEXCEPT {return m_;}
CONSTCD11
inline
weekday
year_month_weekday_last::weekday() const NOEXCEPT
{
return wdl_.weekday();
}
CONSTCD11
inline
weekday_last
year_month_weekday_last::weekday_last() const NOEXCEPT
{
return wdl_;
}
CONSTCD14
inline
year_month_weekday_last::operator sys_days() const NOEXCEPT
{
return sys_days{to_days()};
}
CONSTCD14
inline
year_month_weekday_last::operator local_days() const NOEXCEPT
{
return local_days{to_days()};
}
CONSTCD11
inline
bool
year_month_weekday_last::ok() const NOEXCEPT
{
return y_.ok() && m_.ok() && wdl_.ok();
}
CONSTCD14
inline
days
year_month_weekday_last::to_days() const NOEXCEPT
{
auto const d = sys_days(y_/m_/last);
return (d - (date::weekday{d} - wdl_.weekday())).time_since_epoch();
}
CONSTCD11
inline
bool
operator==(const year_month_weekday_last& x, const year_month_weekday_last& y) NOEXCEPT
{
return x.year() == y.year() && x.month() == y.month() &&
x.weekday_last() == y.weekday_last();
}
CONSTCD11
inline
bool
operator!=(const year_month_weekday_last& x, const year_month_weekday_last& y) NOEXCEPT
{
return !(x == y);
}
template<class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const year_month_weekday_last& ymwdl)
{
return os << ymwdl.year() << '/' << ymwdl.month() << '/' << ymwdl.weekday_last();
}
template<class>
CONSTCD14
inline
year_month_weekday_last
operator+(const year_month_weekday_last& ymwdl, const months& dm) NOEXCEPT
{
return (ymwdl.year() / ymwdl.month() + dm) / ymwdl.weekday_last();
}
template<class>
CONSTCD14
inline
year_month_weekday_last
operator+(const months& dm, const year_month_weekday_last& ymwdl) NOEXCEPT
{
return ymwdl + dm;
}
template<class>
CONSTCD14
inline
year_month_weekday_last
operator-(const year_month_weekday_last& ymwdl, const months& dm) NOEXCEPT
{
return ymwdl + (-dm);
}
CONSTCD11
inline
year_month_weekday_last
operator+(const year_month_weekday_last& ymwdl, const years& dy) NOEXCEPT
{
return {ymwdl.year()+dy, ymwdl.month(), ymwdl.weekday_last()};
}
CONSTCD11
inline
year_month_weekday_last
operator+(const years& dy, const year_month_weekday_last& ymwdl) NOEXCEPT
{
return ymwdl + dy;
}
CONSTCD11
inline
year_month_weekday_last
operator-(const year_month_weekday_last& ymwdl, const years& dy) NOEXCEPT
{
return ymwdl + (-dy);
}
// year_month from operator/()
CONSTCD11
inline
year_month
operator/(const year& y, const month& m) NOEXCEPT
{
return {y, m};
}
CONSTCD11
inline
year_month
operator/(const year& y, int m) NOEXCEPT
{
return y / month(static_cast<unsigned>(m));
}
// month_day from operator/()
CONSTCD11
inline
month_day
operator/(const month& m, const day& d) NOEXCEPT
{
return {m, d};
}
CONSTCD11
inline
month_day
operator/(const day& d, const month& m) NOEXCEPT
{
return m / d;
}
CONSTCD11
inline
month_day
operator/(const month& m, int d) NOEXCEPT
{
return m / day(static_cast<unsigned>(d));
}
CONSTCD11
inline
month_day
operator/(int m, const day& d) NOEXCEPT
{
return month(static_cast<unsigned>(m)) / d;
}
CONSTCD11 inline month_day operator/(const day& d, int m) NOEXCEPT {return m / d;}
// month_day_last from operator/()
CONSTCD11
inline
month_day_last
operator/(const month& m, last_spec) NOEXCEPT
{
return month_day_last{m};
}
CONSTCD11
inline
month_day_last
operator/(last_spec, const month& m) NOEXCEPT
{
return m/last;
}
CONSTCD11
inline
month_day_last
operator/(int m, last_spec) NOEXCEPT
{
return month(static_cast<unsigned>(m))/last;
}
CONSTCD11
inline
month_day_last
operator/(last_spec, int m) NOEXCEPT
{
return m/last;
}
// month_weekday from operator/()
CONSTCD11
inline
month_weekday
operator/(const month& m, const weekday_indexed& wdi) NOEXCEPT
{
return {m, wdi};
}
CONSTCD11
inline
month_weekday
operator/(const weekday_indexed& wdi, const month& m) NOEXCEPT
{
return m / wdi;
}
CONSTCD11
inline
month_weekday
operator/(int m, const weekday_indexed& wdi) NOEXCEPT
{
return month(static_cast<unsigned>(m)) / wdi;
}
CONSTCD11
inline
month_weekday
operator/(const weekday_indexed& wdi, int m) NOEXCEPT
{
return m / wdi;
}
// month_weekday_last from operator/()
CONSTCD11
inline
month_weekday_last
operator/(const month& m, const weekday_last& wdl) NOEXCEPT
{
return {m, wdl};
}
CONSTCD11
inline
month_weekday_last
operator/(const weekday_last& wdl, const month& m) NOEXCEPT
{
return m / wdl;
}
CONSTCD11
inline
month_weekday_last
operator/(int m, const weekday_last& wdl) NOEXCEPT
{
return month(static_cast<unsigned>(m)) / wdl;
}
CONSTCD11
inline
month_weekday_last
operator/(const weekday_last& wdl, int m) NOEXCEPT
{
return m / wdl;
}
// year_month_day from operator/()
CONSTCD11
inline
year_month_day
operator/(const year_month& ym, const day& d) NOEXCEPT
{
return {ym.year(), ym.month(), d};
}
CONSTCD11
inline
year_month_day
operator/(const year_month& ym, int d) NOEXCEPT
{
return ym / day(static_cast<unsigned>(d));
}
CONSTCD11
inline
year_month_day
operator/(const year& y, const month_day& md) NOEXCEPT
{
return y / md.month() / md.day();
}
CONSTCD11
inline
year_month_day
operator/(int y, const month_day& md) NOEXCEPT
{
return year(y) / md;
}
CONSTCD11
inline
year_month_day
operator/(const month_day& md, const year& y) NOEXCEPT
{
return y / md;
}
CONSTCD11
inline
year_month_day
operator/(const month_day& md, int y) NOEXCEPT
{
return year(y) / md;
}
// year_month_day_last from operator/()
CONSTCD11
inline
year_month_day_last
operator/(const year_month& ym, last_spec) NOEXCEPT
{
return {ym.year(), month_day_last{ym.month()}};
}
CONSTCD11
inline
year_month_day_last
operator/(const year& y, const month_day_last& mdl) NOEXCEPT
{
return {y, mdl};
}
CONSTCD11
inline
year_month_day_last
operator/(int y, const month_day_last& mdl) NOEXCEPT
{
return year(y) / mdl;
}
CONSTCD11
inline
year_month_day_last
operator/(const month_day_last& mdl, const year& y) NOEXCEPT
{
return y / mdl;
}
CONSTCD11
inline
year_month_day_last
operator/(const month_day_last& mdl, int y) NOEXCEPT
{
return year(y) / mdl;
}
// year_month_weekday from operator/()
CONSTCD11
inline
year_month_weekday
operator/(const year_month& ym, const weekday_indexed& wdi) NOEXCEPT
{
return {ym.year(), ym.month(), wdi};
}
CONSTCD11
inline
year_month_weekday
operator/(const year& y, const month_weekday& mwd) NOEXCEPT
{
return {y, mwd.month(), mwd.weekday_indexed()};
}
CONSTCD11
inline
year_month_weekday
operator/(int y, const month_weekday& mwd) NOEXCEPT
{
return year(y) / mwd;
}
CONSTCD11
inline
year_month_weekday
operator/(const month_weekday& mwd, const year& y) NOEXCEPT
{
return y / mwd;
}
CONSTCD11
inline
year_month_weekday
operator/(const month_weekday& mwd, int y) NOEXCEPT
{
return year(y) / mwd;
}
// year_month_weekday_last from operator/()
CONSTCD11
inline
year_month_weekday_last
operator/(const year_month& ym, const weekday_last& wdl) NOEXCEPT
{
return {ym.year(), ym.month(), wdl};
}
CONSTCD11
inline
year_month_weekday_last
operator/(const year& y, const month_weekday_last& mwdl) NOEXCEPT
{
return {y, mwdl.month(), mwdl.weekday_last()};
}
CONSTCD11
inline
year_month_weekday_last
operator/(int y, const month_weekday_last& mwdl) NOEXCEPT
{
return year(y) / mwdl;
}
CONSTCD11
inline
year_month_weekday_last
operator/(const month_weekday_last& mwdl, const year& y) NOEXCEPT
{
return y / mwdl;
}
CONSTCD11
inline
year_month_weekday_last
operator/(const month_weekday_last& mwdl, int y) NOEXCEPT
{
return year(y) / mwdl;
}
template <class Duration>
struct fields;
template <class CharT, class Traits, class Duration>
std::basic_ostream<CharT, Traits>&
to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
const fields<Duration>& fds, const std::string* abbrev = nullptr,
const std::chrono::seconds* offset_sec = nullptr);
template <class CharT, class Traits, class Duration, class Alloc>
std::basic_istream<CharT, Traits>&
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
fields<Duration>& fds, std::basic_string<CharT, Traits, Alloc>* abbrev = nullptr,
std::chrono::minutes* offset = nullptr);
// hh_mm_ss
namespace detail
{
struct undocumented {explicit undocumented() = default;};
// width<n>::value is the number of fractional decimal digits in 1/n
// width<0>::value and width<1>::value are defined to be 0
// If 1/n takes more than 18 fractional decimal digits,
// the result is truncated to 19.
// Example: width<2>::value == 1
// Example: width<3>::value == 19
// Example: width<4>::value == 2
// Example: width<10>::value == 1
// Example: width<1000>::value == 3
template <std::uint64_t n, std::uint64_t d, unsigned w = 0,
bool should_continue = n%d != 0 && (w < 19)>
struct width
{
static_assert(d > 0, "width called with zero denominator");
static CONSTDATA unsigned value = 1 + width<n%d*10, d, w+1>::value;
};
template <std::uint64_t n, std::uint64_t d, unsigned w>
struct width<n, d, w, false>
{
static CONSTDATA unsigned value = 0;
};
template <unsigned exp>
struct static_pow10
{
private:
static CONSTDATA std::uint64_t h = static_pow10<exp/2>::value;
public:
static CONSTDATA std::uint64_t value = h * h * (exp % 2 ? 10 : 1);
};
template <>
struct static_pow10<0>
{
static CONSTDATA std::uint64_t value = 1;
};
template <class Duration>
class decimal_format_seconds
{
using CT = typename std::common_type<Duration, std::chrono::seconds>::type;
using rep = typename CT::rep;
static unsigned CONSTDATA trial_width =
detail::width<CT::period::num, CT::period::den>::value;
public:
static unsigned CONSTDATA width = trial_width < 19 ? trial_width : 6u;
using precision = std::chrono::duration<rep,
std::ratio<1, static_pow10<width>::value>>;
private:
std::chrono::seconds s_;
precision sub_s_;
public:
CONSTCD11 decimal_format_seconds()
: s_()
, sub_s_()
{}
CONSTCD11 explicit decimal_format_seconds(const Duration& d) NOEXCEPT
: s_(std::chrono::duration_cast<std::chrono::seconds>(d))
, sub_s_(std::chrono::duration_cast<precision>(d - s_))
{}
CONSTCD14 std::chrono::seconds& seconds() NOEXCEPT {return s_;}
CONSTCD11 std::chrono::seconds seconds() const NOEXCEPT {return s_;}
CONSTCD11 precision subseconds() const NOEXCEPT {return sub_s_;}
CONSTCD14 precision to_duration() const NOEXCEPT
{
return s_ + sub_s_;
}
CONSTCD11 bool in_conventional_range() const NOEXCEPT
{
return sub_s_ < std::chrono::seconds{1} && s_ < std::chrono::minutes{1};
}
template <class CharT, class Traits>
friend
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const decimal_format_seconds& x)
{
return x.print(os, std::chrono::treat_as_floating_point<rep>{});
}
template <class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
print(std::basic_ostream<CharT, Traits>& os, std::true_type) const
{
date::detail::save_ostream<CharT, Traits> _(os);
std::chrono::duration<rep> d = s_ + sub_s_;
if (d < std::chrono::seconds{10})
os << '0';
os << std::fixed << d.count();
return os;
}
template <class CharT, class Traits>
std::basic_ostream<CharT, Traits>&
print(std::basic_ostream<CharT, Traits>& os, std::false_type) const
{
date::detail::save_ostream<CharT, Traits> _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
os.width(2);
os << s_.count();
if (width > 0)
{
#if !ONLY_C_LOCALE
os << std::use_facet<std::numpunct<CharT>>(os.getloc()).decimal_point();
#else
os << '.';
#endif
date::detail::save_ostream<CharT, Traits> _s(os);
os.imbue(std::locale::classic());
os.width(width);
os << sub_s_.count();
}
return os;
}
};
template <class Rep, class Period>
inline
CONSTCD11
typename std::enable_if
<
std::numeric_limits<Rep>::is_signed,
std::chrono::duration<Rep, Period>
>::type
abs(std::chrono::duration<Rep, Period> d)
{
return d >= d.zero() ? +d : -d;
}
template <class Rep, class Period>
inline
CONSTCD11
typename std::enable_if
<
!std::numeric_limits<Rep>::is_signed,
std::chrono::duration<Rep, Period>
>::type
abs(std::chrono::duration<Rep, Period> d)
{
return d;
}
} // namespace detail
template <class Duration>
class hh_mm_ss
{
using dfs = detail::decimal_format_seconds<typename std::common_type<Duration,
std::chrono::seconds>::type>;
std::chrono::hours h_;
std::chrono::minutes m_;
dfs s_;
bool neg_;
public:
static unsigned CONSTDATA fractional_width = dfs::width;
using precision = typename dfs::precision;
CONSTCD11 hh_mm_ss() NOEXCEPT
: hh_mm_ss(Duration::zero())
{}
CONSTCD11 explicit hh_mm_ss(Duration d) NOEXCEPT
: h_(std::chrono::duration_cast<std::chrono::hours>(detail::abs(d)))
, m_(std::chrono::duration_cast<std::chrono::minutes>(detail::abs(d)) - h_)
, s_(detail::abs(d) - h_ - m_)
, neg_(d < Duration::zero())
{}
CONSTCD11 std::chrono::hours hours() const NOEXCEPT {return h_;}
CONSTCD11 std::chrono::minutes minutes() const NOEXCEPT {return m_;}
CONSTCD11 std::chrono::seconds seconds() const NOEXCEPT {return s_.seconds();}
CONSTCD14 std::chrono::seconds&
seconds(detail::undocumented) NOEXCEPT {return s_.seconds();}
CONSTCD11 precision subseconds() const NOEXCEPT {return s_.subseconds();}
CONSTCD11 bool is_negative() const NOEXCEPT {return neg_;}
CONSTCD11 explicit operator precision() const NOEXCEPT {return to_duration();}
CONSTCD11 precision to_duration() const NOEXCEPT
{return (s_.to_duration() + m_ + h_) * (1-2*neg_);}
CONSTCD11 bool in_conventional_range() const NOEXCEPT
{
return !neg_ && h_ < days{1} && m_ < std::chrono::hours{1} &&
s_.in_conventional_range();
}
private:
template <class charT, class traits>
friend
std::basic_ostream<charT, traits>&
operator<<(std::basic_ostream<charT, traits>& os, hh_mm_ss const& tod)
{
if (tod.is_negative())
os << '-';
if (tod.h_ < std::chrono::hours{10})
os << '0';
os << tod.h_.count() << ':';
if (tod.m_ < std::chrono::minutes{10})
os << '0';
os << tod.m_.count() << ':' << tod.s_;
return os;
}
template <class CharT, class Traits, class Duration2>
friend
std::basic_ostream<CharT, Traits>&
date::to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
const fields<Duration2>& fds, const std::string* abbrev,
const std::chrono::seconds* offset_sec);
template <class CharT, class Traits, class Duration2, class Alloc>
friend
std::basic_istream<CharT, Traits>&
date::from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
fields<Duration2>& fds,
std::basic_string<CharT, Traits, Alloc>* abbrev, std::chrono::minutes* offset);
};
inline
CONSTCD14
bool
is_am(std::chrono::hours const& h) NOEXCEPT
{
using std::chrono::hours;
return hours{0} <= h && h < hours{12};
}
inline
CONSTCD14
bool
is_pm(std::chrono::hours const& h) NOEXCEPT
{
using std::chrono::hours;
return hours{12} <= h && h < hours{24};
}
inline
CONSTCD14
std::chrono::hours
make12(std::chrono::hours h) NOEXCEPT
{
using std::chrono::hours;
if (h < hours{12})
{
if (h == hours{0})
h = hours{12};
}
else
{
if (h != hours{12})
h = h - hours{12};
}
return h;
}
inline
CONSTCD14
std::chrono::hours
make24(std::chrono::hours h, bool is_pm) NOEXCEPT
{
using std::chrono::hours;
if (is_pm)
{
if (h != hours{12})
h = h + hours{12};
}
else if (h == hours{12})
h = hours{0};
return h;
}
template <class Duration>
using time_of_day = hh_mm_ss<Duration>;
template <class Rep, class Period,
class = typename std::enable_if
<!std::chrono::treat_as_floating_point<Rep>::value>::type>
CONSTCD11
inline
hh_mm_ss<std::chrono::duration<Rep, Period>>
make_time(const std::chrono::duration<Rep, Period>& d)
{
return hh_mm_ss<std::chrono::duration<Rep, Period>>(d);
}
template <class CharT, class Traits, class Duration>
inline
typename std::enable_if
<
!std::chrono::treat_as_floating_point<typename Duration::rep>::value &&
std::ratio_less<typename Duration::period, days::period>::value
, std::basic_ostream<CharT, Traits>&
>::type
operator<<(std::basic_ostream<CharT, Traits>& os, const sys_time<Duration>& tp)
{
auto const dp = date::floor<days>(tp);
return os << year_month_day(dp) << ' ' << make_time(tp-dp);
}
template <class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const sys_days& dp)
{
return os << year_month_day(dp);
}
template <class CharT, class Traits, class Duration>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const local_time<Duration>& ut)
{
return (os << sys_time<Duration>{ut.time_since_epoch()});
}
namespace detail
{
template <class CharT, std::size_t N>
class string_literal;
template <class CharT1, class CharT2, std::size_t N1, std::size_t N2>
inline
CONSTCD14
string_literal<typename std::conditional<sizeof(CharT2) <= sizeof(CharT1), CharT1, CharT2>::type,
N1 + N2 - 1>
operator+(const string_literal<CharT1, N1>& x, const string_literal<CharT2, N2>& y) NOEXCEPT;
template <class CharT, std::size_t N>
class string_literal
{
CharT p_[N];
CONSTCD11 string_literal() NOEXCEPT
: p_{}
{}
public:
using const_iterator = const CharT*;
string_literal(string_literal const&) = default;
string_literal& operator=(string_literal const&) = delete;
template <std::size_t N1 = 2,
class = typename std::enable_if<N1 == N>::type>
CONSTCD11 string_literal(CharT c) NOEXCEPT
: p_{c}
{
}
template <std::size_t N1 = 3,
class = typename std::enable_if<N1 == N>::type>
CONSTCD11 string_literal(CharT c1, CharT c2) NOEXCEPT
: p_{c1, c2}
{
}
template <std::size_t N1 = 4,
class = typename std::enable_if<N1 == N>::type>
CONSTCD11 string_literal(CharT c1, CharT c2, CharT c3) NOEXCEPT
: p_{c1, c2, c3}
{
}
CONSTCD14 string_literal(const CharT(&a)[N]) NOEXCEPT
: p_{}
{
for (std::size_t i = 0; i < N; ++i)
p_[i] = a[i];
}
template <class U = CharT,
class = typename std::enable_if<(1 < sizeof(U))>::type>
CONSTCD14 string_literal(const char(&a)[N]) NOEXCEPT
: p_{}
{
for (std::size_t i = 0; i < N; ++i)
p_[i] = a[i];
}
template <class CharT2,
class = typename std::enable_if<!std::is_same<CharT2, CharT>::value>::type>
CONSTCD14 string_literal(string_literal<CharT2, N> const& a) NOEXCEPT
: p_{}
{
for (std::size_t i = 0; i < N; ++i)
p_[i] = a[i];
}
CONSTCD11 const CharT* data() const NOEXCEPT {return p_;}
CONSTCD11 std::size_t size() const NOEXCEPT {return N-1;}
CONSTCD11 const_iterator begin() const NOEXCEPT {return p_;}
CONSTCD11 const_iterator end() const NOEXCEPT {return p_ + N-1;}
CONSTCD11 CharT const& operator[](std::size_t n) const NOEXCEPT
{
return p_[n];
}
template <class Traits>
friend
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os, const string_literal& s)
{
return os << s.p_;
}
template <class CharT1, class CharT2, std::size_t N1, std::size_t N2>
friend
CONSTCD14
string_literal<typename std::conditional<sizeof(CharT2) <= sizeof(CharT1), CharT1, CharT2>::type,
N1 + N2 - 1>
operator+(const string_literal<CharT1, N1>& x, const string_literal<CharT2, N2>& y) NOEXCEPT;
};
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 3>
operator+(const string_literal<CharT, 2>& x, const string_literal<CharT, 2>& y) NOEXCEPT
{
return string_literal<CharT, 3>(x[0], y[0]);
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 4>
operator+(const string_literal<CharT, 3>& x, const string_literal<CharT, 2>& y) NOEXCEPT
{
return string_literal<CharT, 4>(x[0], x[1], y[0]);
}
template <class CharT1, class CharT2, std::size_t N1, std::size_t N2>
CONSTCD14
inline
string_literal<typename std::conditional<sizeof(CharT2) <= sizeof(CharT1), CharT1, CharT2>::type,
N1 + N2 - 1>
operator+(const string_literal<CharT1, N1>& x, const string_literal<CharT2, N2>& y) NOEXCEPT
{
using CT = typename std::conditional<sizeof(CharT2) <= sizeof(CharT1), CharT1, CharT2>::type;
string_literal<CT, N1 + N2 - 1> r;
std::size_t i = 0;
for (; i < N1-1; ++i)
r.p_[i] = CT(x.p_[i]);
for (std::size_t j = 0; j < N2; ++j, ++i)
r.p_[i] = CT(y.p_[j]);
return r;
}
template <class CharT, class Traits, class Alloc, std::size_t N>
inline
std::basic_string<CharT, Traits, Alloc>
operator+(std::basic_string<CharT, Traits, Alloc> x, const string_literal<CharT, N>& y)
{
x.append(y.data(), y.size());
return x;
}
#if __cplusplus >= 201402 && (!defined(__EDG_VERSION__) || __EDG_VERSION__ > 411) \
&& (!defined(__SUNPRO_CC) || __SUNPRO_CC > 0x5150)
template <class CharT,
class = std::enable_if_t<std::is_same<CharT, char>::value ||
std::is_same<CharT, wchar_t>::value ||
std::is_same<CharT, char16_t>::value ||
std::is_same<CharT, char32_t>::value>>
CONSTCD14
inline
string_literal<CharT, 2>
msl(CharT c) NOEXCEPT
{
return string_literal<CharT, 2>{c};
}
CONSTCD14
inline
std::size_t
to_string_len(std::intmax_t i)
{
std::size_t r = 0;
do
{
i /= 10;
++r;
} while (i > 0);
return r;
}
template <std::intmax_t N>
CONSTCD14
inline
std::enable_if_t
<
N < 10,
string_literal<char, to_string_len(N)+1>
>
msl() NOEXCEPT
{
return msl(char(N % 10 + '0'));
}
template <std::intmax_t N>
CONSTCD14
inline
std::enable_if_t
<
10 <= N,
string_literal<char, to_string_len(N)+1>
>
msl() NOEXCEPT
{
return msl<N/10>() + msl(char(N % 10 + '0'));
}
template <class CharT, std::intmax_t N, std::intmax_t D>
CONSTCD14
inline
std::enable_if_t
<
std::ratio<N, D>::type::den != 1,
string_literal<CharT, to_string_len(std::ratio<N, D>::type::num) +
to_string_len(std::ratio<N, D>::type::den) + 4>
>
msl(std::ratio<N, D>) NOEXCEPT
{
using R = typename std::ratio<N, D>::type;
return msl(CharT{'['}) + msl<R::num>() + msl(CharT{'/'}) +
msl<R::den>() + msl(CharT{']'});
}
template <class CharT, std::intmax_t N, std::intmax_t D>
CONSTCD14
inline
std::enable_if_t
<
std::ratio<N, D>::type::den == 1,
string_literal<CharT, to_string_len(std::ratio<N, D>::type::num) + 3>
>
msl(std::ratio<N, D>) NOEXCEPT
{
using R = typename std::ratio<N, D>::type;
return msl(CharT{'['}) + msl<R::num>() + msl(CharT{']'});
}
#else // __cplusplus < 201402 || (defined(__EDG_VERSION__) && __EDG_VERSION__ <= 411)
inline
std::string
to_string(std::uint64_t x)
{
return std::to_string(x);
}
template <class CharT>
inline
std::basic_string<CharT>
to_string(std::uint64_t x)
{
auto y = std::to_string(x);
return std::basic_string<CharT>(y.begin(), y.end());
}
template <class CharT, std::intmax_t N, std::intmax_t D>
inline
typename std::enable_if
<
std::ratio<N, D>::type::den != 1,
std::basic_string<CharT>
>::type
msl(std::ratio<N, D>)
{
using R = typename std::ratio<N, D>::type;
return std::basic_string<CharT>(1, '[') + to_string<CharT>(R::num) + CharT{'/'} +
to_string<CharT>(R::den) + CharT{']'};
}
template <class CharT, std::intmax_t N, std::intmax_t D>
inline
typename std::enable_if
<
std::ratio<N, D>::type::den == 1,
std::basic_string<CharT>
>::type
msl(std::ratio<N, D>)
{
using R = typename std::ratio<N, D>::type;
return std::basic_string<CharT>(1, '[') + to_string<CharT>(R::num) + CharT{']'};
}
#endif // __cplusplus < 201402 || (defined(__EDG_VERSION__) && __EDG_VERSION__ <= 411)
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::atto) NOEXCEPT
{
return string_literal<CharT, 2>{'a'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::femto) NOEXCEPT
{
return string_literal<CharT, 2>{'f'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::pico) NOEXCEPT
{
return string_literal<CharT, 2>{'p'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::nano) NOEXCEPT
{
return string_literal<CharT, 2>{'n'};
}
template <class CharT>
CONSTCD11
inline
typename std::enable_if
<
std::is_same<CharT, char>::value,
string_literal<char, 3>
>::type
msl(std::micro) NOEXCEPT
{
return string_literal<char, 3>{'\xC2', '\xB5'};
}
template <class CharT>
CONSTCD11
inline
typename std::enable_if
<
!std::is_same<CharT, char>::value,
string_literal<CharT, 2>
>::type
msl(std::micro) NOEXCEPT
{
return string_literal<CharT, 2>{CharT{static_cast<unsigned char>('\xB5')}};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::milli) NOEXCEPT
{
return string_literal<CharT, 2>{'m'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::centi) NOEXCEPT
{
return string_literal<CharT, 2>{'c'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 3>
msl(std::deca) NOEXCEPT
{
return string_literal<CharT, 3>{'d', 'a'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::deci) NOEXCEPT
{
return string_literal<CharT, 2>{'d'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::hecto) NOEXCEPT
{
return string_literal<CharT, 2>{'h'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::kilo) NOEXCEPT
{
return string_literal<CharT, 2>{'k'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::mega) NOEXCEPT
{
return string_literal<CharT, 2>{'M'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::giga) NOEXCEPT
{
return string_literal<CharT, 2>{'G'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::tera) NOEXCEPT
{
return string_literal<CharT, 2>{'T'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::peta) NOEXCEPT
{
return string_literal<CharT, 2>{'P'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
msl(std::exa) NOEXCEPT
{
return string_literal<CharT, 2>{'E'};
}
template <class CharT, class Period>
CONSTCD11
inline
auto
get_units(Period p)
-> decltype(msl<CharT>(p) + string_literal<CharT, 2>{'s'})
{
return msl<CharT>(p) + string_literal<CharT, 2>{'s'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
get_units(std::ratio<1>)
{
return string_literal<CharT, 2>{'s'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
get_units(std::ratio<3600>)
{
return string_literal<CharT, 2>{'h'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 4>
get_units(std::ratio<60>)
{
return string_literal<CharT, 4>{'m', 'i', 'n'};
}
template <class CharT>
CONSTCD11
inline
string_literal<CharT, 2>
get_units(std::ratio<86400>)
{
return string_literal<CharT, 2>{'d'};
}
template <class CharT, class Traits = std::char_traits<CharT>>
struct make_string;
template <>
struct make_string<char>
{
template <class Rep>
static
std::string
from(Rep n)
{
return std::to_string(n);
}
};
template <class Traits>
struct make_string<char, Traits>
{
template <class Rep>
static
std::basic_string<char, Traits>
from(Rep n)
{
auto s = std::to_string(n);
return std::basic_string<char, Traits>(s.begin(), s.end());
}
};
template <>
struct make_string<wchar_t>
{
template <class Rep>
static
std::wstring
from(Rep n)
{
return std::to_wstring(n);
}
};
template <class Traits>
struct make_string<wchar_t, Traits>
{
template <class Rep>
static
std::basic_string<wchar_t, Traits>
from(Rep n)
{
auto s = std::to_wstring(n);
return std::basic_string<wchar_t, Traits>(s.begin(), s.end());
}
};
} // namespace detail
// to_stream
CONSTDATA year nanyear{-32768};
template <class Duration>
struct fields
{
year_month_day ymd{nanyear/0/0};
weekday wd{8u};
hh_mm_ss<Duration> tod{};
bool has_tod = false;
fields() = default;
fields(year_month_day ymd_) : ymd(ymd_) {}
fields(weekday wd_) : wd(wd_) {}
fields(hh_mm_ss<Duration> tod_) : tod(tod_), has_tod(true) {}
fields(year_month_day ymd_, weekday wd_) : ymd(ymd_), wd(wd_) {}
fields(year_month_day ymd_, hh_mm_ss<Duration> tod_) : ymd(ymd_), tod(tod_),
has_tod(true) {}
fields(weekday wd_, hh_mm_ss<Duration> tod_) : wd(wd_), tod(tod_), has_tod(true) {}
fields(year_month_day ymd_, weekday wd_, hh_mm_ss<Duration> tod_)
: ymd(ymd_)
, wd(wd_)
, tod(tod_)
, has_tod(true)
{}
};
namespace detail
{
template <class CharT, class Traits, class Duration>
unsigned
extract_weekday(std::basic_ostream<CharT, Traits>& os, const fields<Duration>& fds)
{
if (!fds.ymd.ok() && !fds.wd.ok())
{
// fds does not contain a valid weekday
os.setstate(std::ios::failbit);
return 8;
}
weekday wd;
if (fds.ymd.ok())
{
wd = weekday{sys_days(fds.ymd)};
if (fds.wd.ok() && wd != fds.wd)
{
// fds.ymd and fds.wd are inconsistent
os.setstate(std::ios::failbit);
return 8;
}
}
else
wd = fds.wd;
return static_cast<unsigned>((wd - Sunday).count());
}
template <class CharT, class Traits, class Duration>
unsigned
extract_month(std::basic_ostream<CharT, Traits>& os, const fields<Duration>& fds)
{
if (!fds.ymd.month().ok())
{
// fds does not contain a valid month
os.setstate(std::ios::failbit);
return 0;
}
return static_cast<unsigned>(fds.ymd.month());
}
} // namespace detail
#if ONLY_C_LOCALE
namespace detail
{
inline
std::pair<const std::string*, const std::string*>
weekday_names()
{
static const std::string nm[] =
{
"Sunday",
"Monday",
"Tuesday",
"Wednesday",
"Thursday",
"Friday",
"Saturday",
"Sun",
"Mon",
"Tue",
"Wed",
"Thu",
"Fri",
"Sat"
};
return std::make_pair(nm, nm+sizeof(nm)/sizeof(nm[0]));
}
inline
std::pair<const std::string*, const std::string*>
month_names()
{
static const std::string nm[] =
{
"January",
"February",
"March",
"April",
"May",
"June",
"July",
"August",
"September",
"October",
"November",
"December",
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec"
};
return std::make_pair(nm, nm+sizeof(nm)/sizeof(nm[0]));
}
inline
std::pair<const std::string*, const std::string*>
ampm_names()
{
static const std::string nm[] =
{
"AM",
"PM"
};
return std::make_pair(nm, nm+sizeof(nm)/sizeof(nm[0]));
}
template <class CharT, class Traits, class FwdIter>
FwdIter
scan_keyword(std::basic_istream<CharT, Traits>& is, FwdIter kb, FwdIter ke)
{
size_t nkw = static_cast<size_t>(std::distance(kb, ke));
const unsigned char doesnt_match = '\0';
const unsigned char might_match = '\1';
const unsigned char does_match = '\2';
unsigned char statbuf[100];
unsigned char* status = statbuf;
std::unique_ptr<unsigned char, void(*)(void*)> stat_hold(0, free);
if (nkw > sizeof(statbuf))
{
status = (unsigned char*)std::malloc(nkw);
if (status == nullptr)
throw std::bad_alloc();
stat_hold.reset(status);
}
size_t n_might_match = nkw; // At this point, any keyword might match
size_t n_does_match = 0; // but none of them definitely do
// Initialize all statuses to might_match, except for "" keywords are does_match
unsigned char* st = status;
for (auto ky = kb; ky != ke; ++ky, ++st)
{
if (!ky->empty())
*st = might_match;
else
{
*st = does_match;
--n_might_match;
++n_does_match;
}
}
// While there might be a match, test keywords against the next CharT
for (size_t indx = 0; is && n_might_match > 0; ++indx)
{
// Peek at the next CharT but don't consume it
auto ic = is.peek();
if (ic == EOF)
{
is.setstate(std::ios::eofbit);
break;
}
auto c = static_cast<char>(toupper(ic));
bool consume = false;
// For each keyword which might match, see if the indx character is c
// If a match if found, consume c
// If a match is found, and that is the last character in the keyword,
// then that keyword matches.
// If the keyword doesn't match this character, then change the keyword
// to doesn't match
st = status;
for (auto ky = kb; ky != ke; ++ky, ++st)
{
if (*st == might_match)
{
if (c == static_cast<char>(toupper((*ky)[indx])))
{
consume = true;
if (ky->size() == indx+1)
{
*st = does_match;
--n_might_match;
++n_does_match;
}
}
else
{
*st = doesnt_match;
--n_might_match;
}
}
}
// consume if we matched a character
if (consume)
{
(void)is.get();
// If we consumed a character and there might be a matched keyword that
// was marked matched on a previous iteration, then such keywords
// are now marked as not matching.
if (n_might_match + n_does_match > 1)
{
st = status;
for (auto ky = kb; ky != ke; ++ky, ++st)
{
if (*st == does_match && ky->size() != indx+1)
{
*st = doesnt_match;
--n_does_match;
}
}
}
}
}
// We've exited the loop because we hit eof and/or we have no more "might matches".
// Return the first matching result
for (st = status; kb != ke; ++kb, ++st)
if (*st == does_match)
break;
if (kb == ke)
is.setstate(std::ios::failbit);
return kb;
}
} // namespace detail
#endif // ONLY_C_LOCALE
template <class CharT, class Traits, class Duration>
std::basic_ostream<CharT, Traits>&
to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
const fields<Duration>& fds, const std::string* abbrev,
const std::chrono::seconds* offset_sec)
{
#if ONLY_C_LOCALE
using detail::weekday_names;
using detail::month_names;
using detail::ampm_names;
#endif
using detail::save_ostream;
using detail::get_units;
using detail::extract_weekday;
using detail::extract_month;
using std::ios;
using std::chrono::duration_cast;
using std::chrono::seconds;
using std::chrono::minutes;
using std::chrono::hours;
date::detail::save_ostream<CharT, Traits> ss(os);
os.fill(' ');
os.flags(std::ios::skipws | std::ios::dec);
os.width(0);
tm tm{};
bool insert_negative = fds.has_tod && fds.tod.to_duration() < Duration::zero();
#if !ONLY_C_LOCALE
auto& facet = std::use_facet<std::time_put<CharT>>(os.getloc());
#endif
const CharT* command = nullptr;
CharT modified = CharT{};
for (; *fmt; ++fmt)
{
switch (*fmt)
{
case 'a':
case 'A':
if (command)
{
if (modified == CharT{})
{
tm.tm_wday = static_cast<int>(extract_weekday(os, fds));
if (os.fail())
return os;
#if !ONLY_C_LOCALE
const CharT f[] = {'%', *fmt};
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
#else // ONLY_C_LOCALE
os << weekday_names().first[tm.tm_wday+7*(*fmt == 'a')];
#endif // ONLY_C_LOCALE
}
else
{
os << CharT{'%'} << modified << *fmt;
modified = CharT{};
}
command = nullptr;
}
else
os << *fmt;
break;
case 'b':
case 'B':
case 'h':
if (command)
{
if (modified == CharT{})
{
tm.tm_mon = static_cast<int>(extract_month(os, fds)) - 1;
#if !ONLY_C_LOCALE
const CharT f[] = {'%', *fmt};
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
#else // ONLY_C_LOCALE
os << month_names().first[tm.tm_mon+12*(*fmt != 'B')];
#endif // ONLY_C_LOCALE
}
else
{
os << CharT{'%'} << modified << *fmt;
modified = CharT{};
}
command = nullptr;
}
else
os << *fmt;
break;
case 'c':
case 'x':
if (command)
{
if (modified == CharT{'O'})
os << CharT{'%'} << modified << *fmt;
else
{
if (!fds.ymd.ok())
os.setstate(std::ios::failbit);
if (*fmt == 'c' && !fds.has_tod)
os.setstate(std::ios::failbit);
#if !ONLY_C_LOCALE
tm = std::tm{};
auto const& ymd = fds.ymd;
auto ld = local_days(ymd);
if (*fmt == 'c')
{
tm.tm_sec = static_cast<int>(fds.tod.seconds().count());
tm.tm_min = static_cast<int>(fds.tod.minutes().count());
tm.tm_hour = static_cast<int>(fds.tod.hours().count());
}
tm.tm_mday = static_cast<int>(static_cast<unsigned>(ymd.day()));
tm.tm_mon = static_cast<int>(extract_month(os, fds) - 1);
tm.tm_year = static_cast<int>(ymd.year()) - 1900;
tm.tm_wday = static_cast<int>(extract_weekday(os, fds));
if (os.fail())
return os;
tm.tm_yday = static_cast<int>((ld - local_days(ymd.year()/1/1)).count());
CharT f[3] = {'%'};
auto fe = std::begin(f) + 1;
if (modified == CharT{'E'})
*fe++ = modified;
*fe++ = *fmt;
facet.put(os, os, os.fill(), &tm, std::begin(f), fe);
#else // ONLY_C_LOCALE
if (*fmt == 'c')
{
auto wd = static_cast<int>(extract_weekday(os, fds));
os << weekday_names().first[static_cast<unsigned>(wd)+7]
<< ' ';
os << month_names().first[extract_month(os, fds)-1+12] << ' ';
auto d = static_cast<int>(static_cast<unsigned>(fds.ymd.day()));
if (d < 10)
os << ' ';
os << d << ' '
<< make_time(duration_cast<seconds>(fds.tod.to_duration()))
<< ' ' << fds.ymd.year();
}
else // *fmt == 'x'
{
auto const& ymd = fds.ymd;
save_ostream<CharT, Traits> _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
os.width(2);
os << static_cast<unsigned>(ymd.month()) << CharT{'/'};
os.width(2);
os << static_cast<unsigned>(ymd.day()) << CharT{'/'};
os.width(2);
os << static_cast<int>(ymd.year()) % 100;
}
#endif // ONLY_C_LOCALE
}
command = nullptr;
modified = CharT{};
}
else
os << *fmt;
break;
case 'C':
if (command)
{
if (modified == CharT{'O'})
os << CharT{'%'} << modified << *fmt;
else
{
if (!fds.ymd.year().ok())
os.setstate(std::ios::failbit);
auto y = static_cast<int>(fds.ymd.year());
#if !ONLY_C_LOCALE
if (modified == CharT{})
#endif
{
save_ostream<CharT, Traits> _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
if (y >= 0)
{
os.width(2);
os << y/100;
}
else
{
os << CharT{'-'};
os.width(2);
os << -(y-99)/100;
}
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'E'})
{
tm.tm_year = y - 1900;
CharT f[3] = {'%', 'E', 'C'};
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
}
command = nullptr;
modified = CharT{};
}
else
os << *fmt;
break;
case 'd':
case 'e':
if (command)
{
if (modified == CharT{'E'})
os << CharT{'%'} << modified << *fmt;
else
{
if (!fds.ymd.day().ok())
os.setstate(std::ios::failbit);
auto d = static_cast<int>(static_cast<unsigned>(fds.ymd.day()));
#if !ONLY_C_LOCALE
if (modified == CharT{})
#endif
{
save_ostream<CharT, Traits> _(os);
if (*fmt == CharT{'d'})
os.fill('0');
else
os.fill(' ');
os.flags(std::ios::dec | std::ios::right);
os.width(2);
os << d;
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
tm.tm_mday = d;
CharT f[3] = {'%', 'O', *fmt};
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
}
command = nullptr;
modified = CharT{};
}
else
os << *fmt;
break;
case 'D':
if (command)
{
if (modified == CharT{})
{
if (!fds.ymd.ok())
os.setstate(std::ios::failbit);
auto const& ymd = fds.ymd;
save_ostream<CharT, Traits> _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
os.width(2);
os << static_cast<unsigned>(ymd.month()) << CharT{'/'};
os.width(2);
os << static_cast<unsigned>(ymd.day()) << CharT{'/'};
os.width(2);
os << static_cast<int>(ymd.year()) % 100;
}
else
{
os << CharT{'%'} << modified << *fmt;
modified = CharT{};
}
command = nullptr;
}
else
os << *fmt;
break;
case 'F':
if (command)
{
if (modified == CharT{})
{
if (!fds.ymd.ok())
os.setstate(std::ios::failbit);
auto const& ymd = fds.ymd;
save_ostream<CharT, Traits> _(os);
os.imbue(std::locale::classic());
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
os.width(4);
os << static_cast<int>(ymd.year()) << CharT{'-'};
os.width(2);
os << static_cast<unsigned>(ymd.month()) << CharT{'-'};
os.width(2);
os << static_cast<unsigned>(ymd.day());
}
else
{
os << CharT{'%'} << modified << *fmt;
modified = CharT{};
}
command = nullptr;
}
else
os << *fmt;
break;
case 'g':
case 'G':
if (command)
{
if (modified == CharT{})
{
if (!fds.ymd.ok())
os.setstate(std::ios::failbit);
auto ld = local_days(fds.ymd);
auto y = year_month_day{ld + days{3}}.year();
auto start = local_days((y-years{1})/December/Thursday[last]) +
(Monday-Thursday);
if (ld < start)
--y;
if (*fmt == CharT{'G'})
os << y;
else
{
save_ostream<CharT, Traits> _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
os.width(2);
os << std::abs(static_cast<int>(y)) % 100;
}
}
else
{
os << CharT{'%'} << modified << *fmt;
modified = CharT{};
}
command = nullptr;
}
else
os << *fmt;
break;
case 'H':
case 'I':
if (command)
{
if (modified == CharT{'E'})
os << CharT{'%'} << modified << *fmt;
else
{
if (!fds.has_tod)
os.setstate(std::ios::failbit);
if (insert_negative)
{
os << '-';
insert_negative = false;
}
auto hms = fds.tod;
#if !ONLY_C_LOCALE
if (modified == CharT{})
#endif
{
auto h = *fmt == CharT{'I'} ? date::make12(hms.hours()) : hms.hours();
if (h < hours{10})
os << CharT{'0'};
os << h.count();
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
const CharT f[] = {'%', modified, *fmt};
tm.tm_hour = static_cast<int>(hms.hours().count());
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'j':
if (command)
{
if (modified == CharT{})
{
if (fds.ymd.ok() || fds.has_tod)
{
days doy;
if (fds.ymd.ok())
{
auto ld = local_days(fds.ymd);
auto y = fds.ymd.year();
doy = ld - local_days(y/January/1) + days{1};
}
else
{
doy = duration_cast<days>(fds.tod.to_duration());
}
save_ostream<CharT, Traits> _(os);
os.fill('0');
os.flags(std::ios::dec | std::ios::right);
os.width(3);
os << doy.count();
}
else
{
os.setstate(std::ios::failbit);
}
}
else
{
os << CharT{'%'} << modified << *fmt;
modified = CharT{};
}
command = nullptr;
}
else
os << *fmt;
break;
case 'm':
if (command)
{
if (modified == CharT{'E'})
os << CharT{'%'} << modified << *fmt;
else
{
if (!fds.ymd.month().ok())
os.setstate(std::ios::failbit);
auto m = static_cast<unsigned>(fds.ymd.month());
#if !ONLY_C_LOCALE
if (modified == CharT{})
#endif
{
if (m < 10)
os << CharT{'0'};
os << m;
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
const CharT f[] = {'%', modified, *fmt};
tm.tm_mon = static_cast<int>(m-1);
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'M':
if (command)
{
if (modified == CharT{'E'})
os << CharT{'%'} << modified << *fmt;
else
{
if (!fds.has_tod)
os.setstate(std::ios::failbit);
if (insert_negative)
{
os << '-';
insert_negative = false;
}
#if !ONLY_C_LOCALE
if (modified == CharT{})
#endif
{
if (fds.tod.minutes() < minutes{10})
os << CharT{'0'};
os << fds.tod.minutes().count();
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
const CharT f[] = {'%', modified, *fmt};
tm.tm_min = static_cast<int>(fds.tod.minutes().count());
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'n':
if (command)
{
if (modified == CharT{})
os << CharT{'\n'};
else
{
os << CharT{'%'} << modified << *fmt;
modified = CharT{};
}
command = nullptr;
}
else
os << *fmt;
break;
case 'p':
if (command)
{
if (modified == CharT{})
{
if (!fds.has_tod)
os.setstate(std::ios::failbit);
#if !ONLY_C_LOCALE
const CharT f[] = {'%', *fmt};
tm.tm_hour = static_cast<int>(fds.tod.hours().count());
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
#else
if (date::is_am(fds.tod.hours()))
os << ampm_names().first[0];
else
os << ampm_names().first[1];
#endif
}
else
{
os << CharT{'%'} << modified << *fmt;
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'Q':
case 'q':
if (command)
{
if (modified == CharT{})
{
if (!fds.has_tod)
os.setstate(std::ios::failbit);
auto d = fds.tod.to_duration();
if (*fmt == 'q')
os << get_units<CharT>(typename decltype(d)::period::type{});
else
os << d.count();
}
else
{
os << CharT{'%'} << modified << *fmt;
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'r':
if (command)
{
if (modified == CharT{})
{
if (!fds.has_tod)
os.setstate(std::ios::failbit);
#if !ONLY_C_LOCALE
const CharT f[] = {'%', *fmt};
tm.tm_hour = static_cast<int>(fds.tod.hours().count());
tm.tm_min = static_cast<int>(fds.tod.minutes().count());
tm.tm_sec = static_cast<int>(fds.tod.seconds().count());
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
#else
hh_mm_ss<seconds> tod(duration_cast<seconds>(fds.tod.to_duration()));
save_ostream<CharT, Traits> _(os);
os.fill('0');
os.width(2);
os << date::make12(tod.hours()).count() << CharT{':'};
os.width(2);
os << tod.minutes().count() << CharT{':'};
os.width(2);
os << tod.seconds().count() << CharT{' '};
if (date::is_am(tod.hours()))
os << ampm_names().first[0];
else
os << ampm_names().first[1];
#endif
}
else
{
os << CharT{'%'} << modified << *fmt;
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'R':
if (command)
{
if (modified == CharT{})
{
if (!fds.has_tod)
os.setstate(std::ios::failbit);
if (fds.tod.hours() < hours{10})
os << CharT{'0'};
os << fds.tod.hours().count() << CharT{':'};
if (fds.tod.minutes() < minutes{10})
os << CharT{'0'};
os << fds.tod.minutes().count();
}
else
{
os << CharT{'%'} << modified << *fmt;
modified = CharT{};
}
command = nullptr;
}
else
os << *fmt;
break;
case 'S':
if (command)
{
if (modified == CharT{'E'})
os << CharT{'%'} << modified << *fmt;
else
{
if (!fds.has_tod)
os.setstate(std::ios::failbit);
if (insert_negative)
{
os << '-';
insert_negative = false;
}
#if !ONLY_C_LOCALE
if (modified == CharT{})
#endif
{
os << fds.tod.s_;
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
const CharT f[] = {'%', modified, *fmt};
tm.tm_sec = static_cast<int>(fds.tod.s_.seconds().count());
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 't':
if (command)
{
if (modified == CharT{})
os << CharT{'\t'};
else
{
os << CharT{'%'} << modified << *fmt;
modified = CharT{};
}
command = nullptr;
}
else
os << *fmt;
break;
case 'T':
if (command)
{
if (modified == CharT{})
{
if (!fds.has_tod)
os.setstate(std::ios::failbit);
os << fds.tod;
}
else
{
os << CharT{'%'} << modified << *fmt;
modified = CharT{};
}
command = nullptr;
}
else
os << *fmt;
break;
case 'u':
if (command)
{
if (modified == CharT{'E'})
os << CharT{'%'} << modified << *fmt;
else
{
auto wd = extract_weekday(os, fds);
#if !ONLY_C_LOCALE
if (modified == CharT{})
#endif
{
os << (wd != 0 ? wd : 7u);
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
const CharT f[] = {'%', modified, *fmt};
tm.tm_wday = static_cast<int>(wd);
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'U':
if (command)
{
if (modified == CharT{'E'})
os << CharT{'%'} << modified << *fmt;
else
{
auto const& ymd = fds.ymd;
if (!ymd.ok())
os.setstate(std::ios::failbit);
auto ld = local_days(ymd);
#if !ONLY_C_LOCALE
if (modified == CharT{})
#endif
{
auto st = local_days(Sunday[1]/January/ymd.year());
if (ld < st)
os << CharT{'0'} << CharT{'0'};
else
{
auto wn = duration_cast<weeks>(ld - st).count() + 1;
if (wn < 10)
os << CharT{'0'};
os << wn;
}
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
const CharT f[] = {'%', modified, *fmt};
tm.tm_year = static_cast<int>(ymd.year()) - 1900;
tm.tm_wday = static_cast<int>(extract_weekday(os, fds));
if (os.fail())
return os;
tm.tm_yday = static_cast<int>((ld - local_days(ymd.year()/1/1)).count());
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'V':
if (command)
{
if (modified == CharT{'E'})
os << CharT{'%'} << modified << *fmt;
else
{
if (!fds.ymd.ok())
os.setstate(std::ios::failbit);
auto ld = local_days(fds.ymd);
#if !ONLY_C_LOCALE
if (modified == CharT{})
#endif
{
auto y = year_month_day{ld + days{3}}.year();
auto st = local_days((y-years{1})/12/Thursday[last]) +
(Monday-Thursday);
if (ld < st)
{
--y;
st = local_days((y - years{1})/12/Thursday[last]) +
(Monday-Thursday);
}
auto wn = duration_cast<weeks>(ld - st).count() + 1;
if (wn < 10)
os << CharT{'0'};
os << wn;
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
const CharT f[] = {'%', modified, *fmt};
auto const& ymd = fds.ymd;
tm.tm_year = static_cast<int>(ymd.year()) - 1900;
tm.tm_wday = static_cast<int>(extract_weekday(os, fds));
if (os.fail())
return os;
tm.tm_yday = static_cast<int>((ld - local_days(ymd.year()/1/1)).count());
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'w':
if (command)
{
auto wd = extract_weekday(os, fds);
if (os.fail())
return os;
#if !ONLY_C_LOCALE
if (modified == CharT{})
#else
if (modified != CharT{'E'})
#endif
{
os << wd;
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
const CharT f[] = {'%', modified, *fmt};
tm.tm_wday = static_cast<int>(wd);
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
else
{
os << CharT{'%'} << modified << *fmt;
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'W':
if (command)
{
if (modified == CharT{'E'})
os << CharT{'%'} << modified << *fmt;
else
{
auto const& ymd = fds.ymd;
if (!ymd.ok())
os.setstate(std::ios::failbit);
auto ld = local_days(ymd);
#if !ONLY_C_LOCALE
if (modified == CharT{})
#endif
{
auto st = local_days(Monday[1]/January/ymd.year());
if (ld < st)
os << CharT{'0'} << CharT{'0'};
else
{
auto wn = duration_cast<weeks>(ld - st).count() + 1;
if (wn < 10)
os << CharT{'0'};
os << wn;
}
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
const CharT f[] = {'%', modified, *fmt};
tm.tm_year = static_cast<int>(ymd.year()) - 1900;
tm.tm_wday = static_cast<int>(extract_weekday(os, fds));
if (os.fail())
return os;
tm.tm_yday = static_cast<int>((ld - local_days(ymd.year()/1/1)).count());
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'X':
if (command)
{
if (modified == CharT{'O'})
os << CharT{'%'} << modified << *fmt;
else
{
if (!fds.has_tod)
os.setstate(std::ios::failbit);
#if !ONLY_C_LOCALE
tm = std::tm{};
tm.tm_sec = static_cast<int>(fds.tod.seconds().count());
tm.tm_min = static_cast<int>(fds.tod.minutes().count());
tm.tm_hour = static_cast<int>(fds.tod.hours().count());
CharT f[3] = {'%'};
auto fe = std::begin(f) + 1;
if (modified == CharT{'E'})
*fe++ = modified;
*fe++ = *fmt;
facet.put(os, os, os.fill(), &tm, std::begin(f), fe);
#else
os << fds.tod;
#endif
}
command = nullptr;
modified = CharT{};
}
else
os << *fmt;
break;
case 'y':
if (command)
{
if (!fds.ymd.year().ok())
os.setstate(std::ios::failbit);
auto y = static_cast<int>(fds.ymd.year());
#if !ONLY_C_LOCALE
if (modified == CharT{})
{
#endif
y = std::abs(y) % 100;
if (y < 10)
os << CharT{'0'};
os << y;
#if !ONLY_C_LOCALE
}
else
{
const CharT f[] = {'%', modified, *fmt};
tm.tm_year = y - 1900;
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'Y':
if (command)
{
if (modified == CharT{'O'})
os << CharT{'%'} << modified << *fmt;
else
{
if (!fds.ymd.year().ok())
os.setstate(std::ios::failbit);
auto y = fds.ymd.year();
#if !ONLY_C_LOCALE
if (modified == CharT{})
#endif
{
save_ostream<CharT, Traits> _(os);
os.imbue(std::locale::classic());
os << y;
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'E'})
{
const CharT f[] = {'%', modified, *fmt};
tm.tm_year = static_cast<int>(y) - 1900;
facet.put(os, os, os.fill(), &tm, std::begin(f), std::end(f));
}
#endif
}
modified = CharT{};
command = nullptr;
}
else
os << *fmt;
break;
case 'z':
if (command)
{
if (offset_sec == nullptr)
{
// Can not format %z with unknown offset
os.setstate(ios::failbit);
return os;
}
auto m = duration_cast<minutes>(*offset_sec);
auto neg = m < minutes{0};
m = date::abs(m);
auto h = duration_cast<hours>(m);
m -= h;
if (neg)
os << CharT{'-'};
else
os << CharT{'+'};
if (h < hours{10})
os << CharT{'0'};
os << h.count();
if (modified != CharT{})
os << CharT{':'};
if (m < minutes{10})
os << CharT{'0'};
os << m.count();
command = nullptr;
modified = CharT{};
}
else
os << *fmt;
break;
case 'Z':
if (command)
{
if (modified == CharT{})
{
if (abbrev == nullptr)
{
// Can not format %Z with unknown time_zone
os.setstate(ios::failbit);
return os;
}
for (auto c : *abbrev)
os << CharT(c);
}
else
{
os << CharT{'%'} << modified << *fmt;
modified = CharT{};
}
command = nullptr;
}
else
os << *fmt;
break;
case 'E':
case 'O':
if (command)
{
if (modified == CharT{})
{
modified = *fmt;
}
else
{
os << CharT{'%'} << modified << *fmt;
command = nullptr;
modified = CharT{};
}
}
else
os << *fmt;
break;
case '%':
if (command)
{
if (modified == CharT{})
{
os << CharT{'%'};
command = nullptr;
}
else
{
os << CharT{'%'} << modified << CharT{'%'};
command = nullptr;
modified = CharT{};
}
}
else
command = fmt;
break;
default:
if (command)
{
os << CharT{'%'};
command = nullptr;
}
if (modified != CharT{})
{
os << modified;
modified = CharT{};
}
os << *fmt;
break;
}
}
if (command)
os << CharT{'%'};
if (modified != CharT{})
os << modified;
return os;
}
template <class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const year& y)
{
using CT = std::chrono::seconds;
fields<CT> fds{y/0/0};
return to_stream(os, fmt, fds);
}
template <class CharT, class Traits>
inline
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/nanyear};
return to_stream(os, fmt, fds);
}
template <class CharT, class Traits>
inline
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/nanyear};
return to_stream(os, fmt, fds);
}
template <class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const weekday& wd)
{
using CT = std::chrono::seconds;
fields<CT> fds{wd};
return to_stream(os, fmt, fds);
}
template <class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt, const year_month& ym)
{
using CT = std::chrono::seconds;
fields<CT> fds{ym/0};
return to_stream(os, fmt, fds);
}
template <class CharT, class Traits>
inline
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/nanyear};
return to_stream(os, fmt, fds);
}
template <class CharT, class Traits>
inline
std::basic_ostream<CharT, Traits>&
to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
const year_month_day& ymd)
{
using CT = std::chrono::seconds;
fields<CT> fds{ymd};
return to_stream(os, fmt, fds);
}
template <class CharT, class Traits, class Rep, class Period>
inline
std::basic_ostream<CharT, Traits>&
to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
const std::chrono::duration<Rep, Period>& d)
{
using Duration = std::chrono::duration<Rep, Period>;
using CT = typename std::common_type<Duration, std::chrono::seconds>::type;
fields<CT> fds{hh_mm_ss<CT>{d}};
return to_stream(os, fmt, fds);
}
template <class CharT, class Traits, class Duration>
std::basic_ostream<CharT, Traits>&
to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
const local_time<Duration>& tp, const std::string* abbrev = nullptr,
const std::chrono::seconds* offset_sec = nullptr)
{
using CT = typename std::common_type<Duration, std::chrono::seconds>::type;
auto ld = floor<days>(tp);
fields<CT> fds{year_month_day{ld}, hh_mm_ss<CT>{tp-local_seconds{ld}}};
return to_stream(os, fmt, fds, abbrev, offset_sec);
}
template <class CharT, class Traits, class Duration>
std::basic_ostream<CharT, Traits>&
to_stream(std::basic_ostream<CharT, Traits>& os, const CharT* fmt,
const sys_time<Duration>& tp)
{
using std::chrono::seconds;
using CT = typename std::common_type<Duration, seconds>::type;
const std::string abbrev("UTC");
CONSTDATA seconds offset{0};
auto sd = floor<days>(tp);
fields<CT> fds{year_month_day{sd}, hh_mm_ss<CT>{tp-sys_seconds{sd}}};
return to_stream(os, fmt, fds, &abbrev, &offset);
}
// format
template <class CharT, class Streamable>
auto
format(const std::locale& loc, const CharT* fmt, const Streamable& tp)
-> decltype(to_stream(std::declval<std::basic_ostream<CharT>&>(), fmt, tp),
std::basic_string<CharT>{})
{
std::basic_ostringstream<CharT> os;
os.exceptions(std::ios::failbit | std::ios::badbit);
os.imbue(loc);
to_stream(os, fmt, tp);
return os.str();
}
template <class CharT, class Streamable>
auto
format(const CharT* fmt, const Streamable& tp)
-> decltype(to_stream(std::declval<std::basic_ostream<CharT>&>(), fmt, tp),
std::basic_string<CharT>{})
{
std::basic_ostringstream<CharT> os;
os.exceptions(std::ios::failbit | std::ios::badbit);
to_stream(os, fmt, tp);
return os.str();
}
template <class CharT, class Traits, class Alloc, class Streamable>
auto
format(const std::locale& loc, const std::basic_string<CharT, Traits, Alloc>& fmt,
const Streamable& tp)
-> decltype(to_stream(std::declval<std::basic_ostream<CharT, Traits>&>(), fmt.c_str(), tp),
std::basic_string<CharT, Traits, Alloc>{})
{
std::basic_ostringstream<CharT, Traits, Alloc> os;
os.exceptions(std::ios::failbit | std::ios::badbit);
os.imbue(loc);
to_stream(os, fmt.c_str(), tp);
return os.str();
}
template <class CharT, class Traits, class Alloc, class Streamable>
auto
format(const std::basic_string<CharT, Traits, Alloc>& fmt, const Streamable& tp)
-> decltype(to_stream(std::declval<std::basic_ostream<CharT, Traits>&>(), fmt.c_str(), tp),
std::basic_string<CharT, Traits, Alloc>{})
{
std::basic_ostringstream<CharT, Traits, Alloc> os;
os.exceptions(std::ios::failbit | std::ios::badbit);
to_stream(os, fmt.c_str(), tp);
return os.str();
}
// parse
namespace detail
{
template <class CharT, class Traits>
bool
read_char(std::basic_istream<CharT, Traits>& is, CharT fmt, std::ios::iostate& err)
{
auto ic = is.get();
if (Traits::eq_int_type(ic, Traits::eof()) ||
!Traits::eq(Traits::to_char_type(ic), fmt))
{
err |= std::ios::failbit;
is.setstate(std::ios::failbit);
return false;
}
return true;
}
template <class CharT, class Traits>
unsigned
read_unsigned(std::basic_istream<CharT, Traits>& is, unsigned m = 1, unsigned M = 10)
{
unsigned x = 0;
unsigned count = 0;
while (true)
{
auto ic = is.peek();
if (Traits::eq_int_type(ic, Traits::eof()))
break;
auto c = static_cast<char>(Traits::to_char_type(ic));
if (!('0' <= c && c <= '9'))
break;
(void)is.get();
++count;
x = 10*x + static_cast<unsigned>(c - '0');
if (count == M)
break;
}
if (count < m)
is.setstate(std::ios::failbit);
return x;
}
template <class CharT, class Traits>
int
read_signed(std::basic_istream<CharT, Traits>& is, unsigned m = 1, unsigned M = 10)
{
auto ic = is.peek();
if (!Traits::eq_int_type(ic, Traits::eof()))
{
auto c = static_cast<char>(Traits::to_char_type(ic));
if (('0' <= c && c <= '9') || c == '-' || c == '+')
{
if (c == '-' || c == '+')
(void)is.get();
auto x = static_cast<int>(read_unsigned(is, std::max(m, 1u), M));
if (!is.fail())
{
if (c == '-')
x = -x;
return x;
}
}
}
if (m > 0)
is.setstate(std::ios::failbit);
return 0;
}
template <class CharT, class Traits>
long double
read_long_double(std::basic_istream<CharT, Traits>& is, unsigned m = 1, unsigned M = 10)
{
unsigned count = 0;
unsigned fcount = 0;
unsigned long long i = 0;
unsigned long long f = 0;
bool parsing_fraction = false;
#if ONLY_C_LOCALE
typename Traits::int_type decimal_point = '.';
#else
auto decimal_point = Traits::to_int_type(
std::use_facet<std::numpunct<CharT>>(is.getloc()).decimal_point());
#endif
while (true)
{
auto ic = is.peek();
if (Traits::eq_int_type(ic, Traits::eof()))
break;
if (Traits::eq_int_type(ic, decimal_point))
{
decimal_point = Traits::eof();
parsing_fraction = true;
}
else
{
auto c = static_cast<char>(Traits::to_char_type(ic));
if (!('0' <= c && c <= '9'))
break;
if (!parsing_fraction)
{
i = 10*i + static_cast<unsigned>(c - '0');
}
else
{
f = 10*f + static_cast<unsigned>(c - '0');
++fcount;
}
}
(void)is.get();
if (++count == M)
break;
}
if (count < m)
{
is.setstate(std::ios::failbit);
return 0;
}
return i + f/std::pow(10.L, fcount);
}
struct rs
{
int& i;
unsigned m;
unsigned M;
};
struct ru
{
int& i;
unsigned m;
unsigned M;
};
struct rld
{
long double& i;
unsigned m;
unsigned M;
};
template <class CharT, class Traits>
void
read(std::basic_istream<CharT, Traits>&)
{
}
template <class CharT, class Traits, class ...Args>
void
read(std::basic_istream<CharT, Traits>& is, CharT a0, Args&& ...args);
template <class CharT, class Traits, class ...Args>
void
read(std::basic_istream<CharT, Traits>& is, rs a0, Args&& ...args);
template <class CharT, class Traits, class ...Args>
void
read(std::basic_istream<CharT, Traits>& is, ru a0, Args&& ...args);
template <class CharT, class Traits, class ...Args>
void
read(std::basic_istream<CharT, Traits>& is, int a0, Args&& ...args);
template <class CharT, class Traits, class ...Args>
void
read(std::basic_istream<CharT, Traits>& is, rld a0, Args&& ...args);
template <class CharT, class Traits, class ...Args>
void
read(std::basic_istream<CharT, Traits>& is, CharT a0, Args&& ...args)
{
// No-op if a0 == CharT{}
if (a0 != CharT{})
{
auto ic = is.peek();
if (Traits::eq_int_type(ic, Traits::eof()))
{
is.setstate(std::ios::failbit | std::ios::eofbit);
return;
}
if (!Traits::eq(Traits::to_char_type(ic), a0))
{
is.setstate(std::ios::failbit);
return;
}
(void)is.get();
}
read(is, std::forward<Args>(args)...);
}
template <class CharT, class Traits, class ...Args>
void
read(std::basic_istream<CharT, Traits>& is, rs a0, Args&& ...args)
{
auto x = read_signed(is, a0.m, a0.M);
if (is.fail())
return;
a0.i = x;
read(is, std::forward<Args>(args)...);
}
template <class CharT, class Traits, class ...Args>
void
read(std::basic_istream<CharT, Traits>& is, ru a0, Args&& ...args)
{
auto x = read_unsigned(is, a0.m, a0.M);
if (is.fail())
return;
a0.i = static_cast<int>(x);
read(is, std::forward<Args>(args)...);
}
template <class CharT, class Traits, class ...Args>
void
read(std::basic_istream<CharT, Traits>& is, int a0, Args&& ...args)
{
if (a0 != -1)
{
auto u = static_cast<unsigned>(a0);
CharT buf[std::numeric_limits<unsigned>::digits10+2u] = {};
auto e = buf;
do
{
*e++ = static_cast<CharT>(CharT(u % 10) + CharT{'0'});
u /= 10;
} while (u > 0);
std::reverse(buf, e);
for (auto p = buf; p != e && is.rdstate() == std::ios::goodbit; ++p)
read(is, *p);
}
if (is.rdstate() == std::ios::goodbit)
read(is, std::forward<Args>(args)...);
}
template <class CharT, class Traits, class ...Args>
void
read(std::basic_istream<CharT, Traits>& is, rld a0, Args&& ...args)
{
auto x = read_long_double(is, a0.m, a0.M);
if (is.fail())
return;
a0.i = x;
read(is, std::forward<Args>(args)...);
}
template <class T, class CharT, class Traits>
inline
void
checked_set(T& value, T from, T not_a_value, std::basic_ios<CharT, Traits>& is)
{
if (!is.fail())
{
if (value == not_a_value)
value = std::move(from);
else if (value != from)
is.setstate(std::ios::failbit);
}
}
} // namespace detail;
template <class CharT, class Traits, class Duration, class Alloc = std::allocator<CharT>>
std::basic_istream<CharT, Traits>&
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
fields<Duration>& fds, std::basic_string<CharT, Traits, Alloc>* abbrev,
std::chrono::minutes* offset)
{
using std::numeric_limits;
using std::ios;
using std::chrono::duration;
using std::chrono::duration_cast;
using std::chrono::seconds;
using std::chrono::minutes;
using std::chrono::hours;
using detail::round_i;
typename std::basic_istream<CharT, Traits>::sentry ok{is, true};
if (ok)
{
date::detail::save_istream<CharT, Traits> ss(is);
is.fill(' ');
is.flags(std::ios::skipws | std::ios::dec);
is.width(0);
#if !ONLY_C_LOCALE
auto& f = std::use_facet<std::time_get<CharT>>(is.getloc());
std::tm tm{};
#endif
const CharT* command = nullptr;
auto modified = CharT{};
auto width = -1;
CONSTDATA int not_a_year = numeric_limits<short>::min();
CONSTDATA int not_a_2digit_year = 100;
CONSTDATA int not_a_century = not_a_year / 100;
CONSTDATA int not_a_month = 0;
CONSTDATA int not_a_day = 0;
CONSTDATA int not_a_hour = numeric_limits<int>::min();
CONSTDATA int not_a_hour_12_value = 0;
CONSTDATA int not_a_minute = not_a_hour;
CONSTDATA Duration not_a_second = Duration::min();
CONSTDATA int not_a_doy = -1;
CONSTDATA int not_a_weekday = 8;
CONSTDATA int not_a_week_num = 100;
CONSTDATA int not_a_ampm = -1;
CONSTDATA minutes not_a_offset = minutes::min();
int Y = not_a_year; // c, F, Y *
int y = not_a_2digit_year; // D, x, y *
int g = not_a_2digit_year; // g *
int G = not_a_year; // G *
int C = not_a_century; // C *
int m = not_a_month; // b, B, h, m, c, D, F, x *
int d = not_a_day; // c, d, D, e, F, x *
int j = not_a_doy; // j *
int wd = not_a_weekday; // a, A, u, w *
int H = not_a_hour; // c, H, R, T, X *
int I = not_a_hour_12_value; // I, r *
int p = not_a_ampm; // p, r *
int M = not_a_minute; // c, M, r, R, T, X *
Duration s = not_a_second; // c, r, S, T, X *
int U = not_a_week_num; // U *
int V = not_a_week_num; // V *
int W = not_a_week_num; // W *
std::basic_string<CharT, Traits, Alloc> temp_abbrev; // Z *
minutes temp_offset = not_a_offset; // z *
using detail::read;
using detail::rs;
using detail::ru;
using detail::rld;
using detail::checked_set;
for (; *fmt != CharT{} && !is.fail(); ++fmt)
{
switch (*fmt)
{
case 'a':
case 'A':
case 'u':
case 'w': // wd: a, A, u, w
if (command)
{
int trial_wd = not_a_weekday;
if (*fmt == 'a' || *fmt == 'A')
{
if (modified == CharT{})
{
#if !ONLY_C_LOCALE
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
is.setstate(err);
if (!is.fail())
trial_wd = tm.tm_wday;
#else
auto nm = detail::weekday_names();
auto i = detail::scan_keyword(is, nm.first, nm.second) - nm.first;
if (!is.fail())
trial_wd = i % 7;
#endif
}
else
read(is, CharT{'%'}, width, modified, *fmt);
}
else // *fmt == 'u' || *fmt == 'w'
{
#if !ONLY_C_LOCALE
if (modified == CharT{})
#else
if (modified != CharT{'E'})
#endif
{
read(is, ru{trial_wd, 1, width == -1 ?
1u : static_cast<unsigned>(width)});
if (!is.fail())
{
if (*fmt == 'u')
{
if (!(1 <= trial_wd && trial_wd <= 7))
{
trial_wd = not_a_weekday;
is.setstate(ios::failbit);
}
else if (trial_wd == 7)
trial_wd = 0;
}
else // *fmt == 'w'
{
if (!(0 <= trial_wd && trial_wd <= 6))
{
trial_wd = not_a_weekday;
is.setstate(ios::failbit);
}
}
}
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
is.setstate(err);
if (!is.fail())
trial_wd = tm.tm_wday;
}
#endif
else
read(is, CharT{'%'}, width, modified, *fmt);
}
if (trial_wd != not_a_weekday)
checked_set(wd, trial_wd, not_a_weekday, is);
}
else // !command
read(is, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
break;
case 'b':
case 'B':
case 'h':
if (command)
{
if (modified == CharT{})
{
int ttm = not_a_month;
#if !ONLY_C_LOCALE
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
if ((err & ios::failbit) == 0)
ttm = tm.tm_mon + 1;
is.setstate(err);
#else
auto nm = detail::month_names();
auto i = detail::scan_keyword(is, nm.first, nm.second) - nm.first;
if (!is.fail())
ttm = i % 12 + 1;
#endif
checked_set(m, ttm, not_a_month, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'c':
if (command)
{
if (modified != CharT{'O'})
{
#if !ONLY_C_LOCALE
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
if ((err & ios::failbit) == 0)
{
checked_set(Y, tm.tm_year + 1900, not_a_year, is);
checked_set(m, tm.tm_mon + 1, not_a_month, is);
checked_set(d, tm.tm_mday, not_a_day, is);
checked_set(H, tm.tm_hour, not_a_hour, is);
checked_set(M, tm.tm_min, not_a_minute, is);
checked_set(s, duration_cast<Duration>(seconds{tm.tm_sec}),
not_a_second, is);
}
is.setstate(err);
#else
// "%a %b %e %T %Y"
auto nm = detail::weekday_names();
auto i = detail::scan_keyword(is, nm.first, nm.second) - nm.first;
checked_set(wd, static_cast<int>(i % 7), not_a_weekday, is);
ws(is);
nm = detail::month_names();
i = detail::scan_keyword(is, nm.first, nm.second) - nm.first;
checked_set(m, static_cast<int>(i % 12 + 1), not_a_month, is);
ws(is);
int td = not_a_day;
read(is, rs{td, 1, 2});
checked_set(d, td, not_a_day, is);
ws(is);
using dfs = detail::decimal_format_seconds<Duration>;
CONSTDATA auto w = Duration::period::den == 1 ? 2 : 3 + dfs::width;
int tH;
int tM;
long double S;
read(is, ru{tH, 1, 2}, CharT{':'}, ru{tM, 1, 2},
CharT{':'}, rld{S, 1, w});
checked_set(H, tH, not_a_hour, is);
checked_set(M, tM, not_a_minute, is);
checked_set(s, round_i<Duration>(duration<long double>{S}),
not_a_second, is);
ws(is);
int tY = not_a_year;
read(is, rs{tY, 1, 4u});
checked_set(Y, tY, not_a_year, is);
#endif
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'x':
if (command)
{
if (modified != CharT{'O'})
{
#if !ONLY_C_LOCALE
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
if ((err & ios::failbit) == 0)
{
checked_set(Y, tm.tm_year + 1900, not_a_year, is);
checked_set(m, tm.tm_mon + 1, not_a_month, is);
checked_set(d, tm.tm_mday, not_a_day, is);
}
is.setstate(err);
#else
// "%m/%d/%y"
int ty = not_a_2digit_year;
int tm = not_a_month;
int td = not_a_day;
read(is, ru{tm, 1, 2}, CharT{'/'}, ru{td, 1, 2}, CharT{'/'},
rs{ty, 1, 2});
checked_set(y, ty, not_a_2digit_year, is);
checked_set(m, tm, not_a_month, is);
checked_set(d, td, not_a_day, is);
#endif
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'X':
if (command)
{
if (modified != CharT{'O'})
{
#if !ONLY_C_LOCALE
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
if ((err & ios::failbit) == 0)
{
checked_set(H, tm.tm_hour, not_a_hour, is);
checked_set(M, tm.tm_min, not_a_minute, is);
checked_set(s, duration_cast<Duration>(seconds{tm.tm_sec}),
not_a_second, is);
}
is.setstate(err);
#else
// "%T"
using dfs = detail::decimal_format_seconds<Duration>;
CONSTDATA auto w = Duration::period::den == 1 ? 2 : 3 + dfs::width;
int tH = not_a_hour;
int tM = not_a_minute;
long double S;
read(is, ru{tH, 1, 2}, CharT{':'}, ru{tM, 1, 2},
CharT{':'}, rld{S, 1, w});
checked_set(H, tH, not_a_hour, is);
checked_set(M, tM, not_a_minute, is);
checked_set(s, round_i<Duration>(duration<long double>{S}),
not_a_second, is);
#endif
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'C':
if (command)
{
int tC = not_a_century;
#if !ONLY_C_LOCALE
if (modified == CharT{})
{
#endif
read(is, rs{tC, 1, width == -1 ? 2u : static_cast<unsigned>(width)});
#if !ONLY_C_LOCALE
}
else
{
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
if ((err & ios::failbit) == 0)
{
auto tY = tm.tm_year + 1900;
tC = (tY >= 0 ? tY : tY-99) / 100;
}
is.setstate(err);
}
#endif
checked_set(C, tC, not_a_century, is);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'D':
if (command)
{
if (modified == CharT{})
{
int tn = not_a_month;
int td = not_a_day;
int ty = not_a_2digit_year;
read(is, ru{tn, 1, 2}, CharT{'\0'}, CharT{'/'}, CharT{'\0'},
ru{td, 1, 2}, CharT{'\0'}, CharT{'/'}, CharT{'\0'},
rs{ty, 1, 2});
checked_set(y, ty, not_a_2digit_year, is);
checked_set(m, tn, not_a_month, is);
checked_set(d, td, not_a_day, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'F':
if (command)
{
if (modified == CharT{})
{
int tY = not_a_year;
int tn = not_a_month;
int td = not_a_day;
read(is, rs{tY, 1, width == -1 ? 4u : static_cast<unsigned>(width)},
CharT{'-'}, ru{tn, 1, 2}, CharT{'-'}, ru{td, 1, 2});
checked_set(Y, tY, not_a_year, is);
checked_set(m, tn, not_a_month, is);
checked_set(d, td, not_a_day, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'd':
case 'e':
if (command)
{
#if !ONLY_C_LOCALE
if (modified == CharT{})
#else
if (modified != CharT{'E'})
#endif
{
int td = not_a_day;
read(is, rs{td, 1, width == -1 ? 2u : static_cast<unsigned>(width)});
checked_set(d, td, not_a_day, is);
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
command = nullptr;
width = -1;
modified = CharT{};
if ((err & ios::failbit) == 0)
checked_set(d, tm.tm_mday, not_a_day, is);
is.setstate(err);
}
#endif
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'H':
if (command)
{
#if !ONLY_C_LOCALE
if (modified == CharT{})
#else
if (modified != CharT{'E'})
#endif
{
int tH = not_a_hour;
read(is, ru{tH, 1, width == -1 ? 2u : static_cast<unsigned>(width)});
checked_set(H, tH, not_a_hour, is);
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
if ((err & ios::failbit) == 0)
checked_set(H, tm.tm_hour, not_a_hour, is);
is.setstate(err);
}
#endif
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'I':
if (command)
{
if (modified == CharT{})
{
int tI = not_a_hour_12_value;
// reads in an hour into I, but most be in [1, 12]
read(is, rs{tI, 1, width == -1 ? 2u : static_cast<unsigned>(width)});
if (!(1 <= tI && tI <= 12))
is.setstate(ios::failbit);
checked_set(I, tI, not_a_hour_12_value, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'j':
if (command)
{
if (modified == CharT{})
{
int tj = not_a_doy;
read(is, ru{tj, 1, width == -1 ? 3u : static_cast<unsigned>(width)});
checked_set(j, tj, not_a_doy, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'M':
if (command)
{
#if !ONLY_C_LOCALE
if (modified == CharT{})
#else
if (modified != CharT{'E'})
#endif
{
int tM = not_a_minute;
read(is, ru{tM, 1, width == -1 ? 2u : static_cast<unsigned>(width)});
checked_set(M, tM, not_a_minute, is);
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
if ((err & ios::failbit) == 0)
checked_set(M, tm.tm_min, not_a_minute, is);
is.setstate(err);
}
#endif
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'm':
if (command)
{
#if !ONLY_C_LOCALE
if (modified == CharT{})
#else
if (modified != CharT{'E'})
#endif
{
int tn = not_a_month;
read(is, rs{tn, 1, width == -1 ? 2u : static_cast<unsigned>(width)});
checked_set(m, tn, not_a_month, is);
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
if ((err & ios::failbit) == 0)
checked_set(m, tm.tm_mon + 1, not_a_month, is);
is.setstate(err);
}
#endif
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'n':
case 't':
if (command)
{
if (modified == CharT{})
{
// %n matches a single white space character
// %t matches 0 or 1 white space characters
auto ic = is.peek();
if (Traits::eq_int_type(ic, Traits::eof()))
{
ios::iostate err = ios::eofbit;
if (*fmt == 'n')
err |= ios::failbit;
is.setstate(err);
break;
}
if (isspace(ic))
{
(void)is.get();
}
else if (*fmt == 'n')
is.setstate(ios::failbit);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'p':
if (command)
{
if (modified == CharT{})
{
int tp = not_a_ampm;
#if !ONLY_C_LOCALE
tm = std::tm{};
tm.tm_hour = 1;
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
is.setstate(err);
if (tm.tm_hour == 1)
tp = 0;
else if (tm.tm_hour == 13)
tp = 1;
else
is.setstate(err);
#else
auto nm = detail::ampm_names();
auto i = detail::scan_keyword(is, nm.first, nm.second) - nm.first;
tp = static_cast<decltype(tp)>(i);
#endif
checked_set(p, tp, not_a_ampm, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'r':
if (command)
{
if (modified == CharT{})
{
#if !ONLY_C_LOCALE
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
if ((err & ios::failbit) == 0)
{
checked_set(H, tm.tm_hour, not_a_hour, is);
checked_set(M, tm.tm_min, not_a_hour, is);
checked_set(s, duration_cast<Duration>(seconds{tm.tm_sec}),
not_a_second, is);
}
is.setstate(err);
#else
// "%I:%M:%S %p"
using dfs = detail::decimal_format_seconds<Duration>;
CONSTDATA auto w = Duration::period::den == 1 ? 2 : 3 + dfs::width;
long double S;
int tI = not_a_hour_12_value;
int tM = not_a_minute;
read(is, ru{tI, 1, 2}, CharT{':'}, ru{tM, 1, 2},
CharT{':'}, rld{S, 1, w});
checked_set(I, tI, not_a_hour_12_value, is);
checked_set(M, tM, not_a_minute, is);
checked_set(s, round_i<Duration>(duration<long double>{S}),
not_a_second, is);
ws(is);
auto nm = detail::ampm_names();
auto i = detail::scan_keyword(is, nm.first, nm.second) - nm.first;
checked_set(p, static_cast<int>(i), not_a_ampm, is);
#endif
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'R':
if (command)
{
if (modified == CharT{})
{
int tH = not_a_hour;
int tM = not_a_minute;
read(is, ru{tH, 1, 2}, CharT{'\0'}, CharT{':'}, CharT{'\0'},
ru{tM, 1, 2}, CharT{'\0'});
checked_set(H, tH, not_a_hour, is);
checked_set(M, tM, not_a_minute, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'S':
if (command)
{
#if !ONLY_C_LOCALE
if (modified == CharT{})
#else
if (modified != CharT{'E'})
#endif
{
using dfs = detail::decimal_format_seconds<Duration>;
CONSTDATA auto w = Duration::period::den == 1 ? 2 : 3 + dfs::width;
long double S;
read(is, rld{S, 1, width == -1 ? w : static_cast<unsigned>(width)});
checked_set(s, round_i<Duration>(duration<long double>{S}),
not_a_second, is);
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'O'})
{
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
if ((err & ios::failbit) == 0)
checked_set(s, duration_cast<Duration>(seconds{tm.tm_sec}),
not_a_second, is);
is.setstate(err);
}
#endif
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'T':
if (command)
{
if (modified == CharT{})
{
using dfs = detail::decimal_format_seconds<Duration>;
CONSTDATA auto w = Duration::period::den == 1 ? 2 : 3 + dfs::width;
int tH = not_a_hour;
int tM = not_a_minute;
long double S;
read(is, ru{tH, 1, 2}, CharT{':'}, ru{tM, 1, 2},
CharT{':'}, rld{S, 1, w});
checked_set(H, tH, not_a_hour, is);
checked_set(M, tM, not_a_minute, is);
checked_set(s, round_i<Duration>(duration<long double>{S}),
not_a_second, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'Y':
if (command)
{
#if !ONLY_C_LOCALE
if (modified == CharT{})
#else
if (modified != CharT{'O'})
#endif
{
int tY = not_a_year;
read(is, rs{tY, 1, width == -1 ? 4u : static_cast<unsigned>(width)});
checked_set(Y, tY, not_a_year, is);
}
#if !ONLY_C_LOCALE
else if (modified == CharT{'E'})
{
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
if ((err & ios::failbit) == 0)
checked_set(Y, tm.tm_year + 1900, not_a_year, is);
is.setstate(err);
}
#endif
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'y':
if (command)
{
#if !ONLY_C_LOCALE
if (modified == CharT{})
#endif
{
int ty = not_a_2digit_year;
read(is, ru{ty, 1, width == -1 ? 2u : static_cast<unsigned>(width)});
checked_set(y, ty, not_a_2digit_year, is);
}
#if !ONLY_C_LOCALE
else
{
ios::iostate err = ios::goodbit;
f.get(is, nullptr, is, err, &tm, command, fmt+1);
if ((err & ios::failbit) == 0)
checked_set(Y, tm.tm_year + 1900, not_a_year, is);
is.setstate(err);
}
#endif
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'g':
if (command)
{
if (modified == CharT{})
{
int tg = not_a_2digit_year;
read(is, ru{tg, 1, width == -1 ? 2u : static_cast<unsigned>(width)});
checked_set(g, tg, not_a_2digit_year, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'G':
if (command)
{
if (modified == CharT{})
{
int tG = not_a_year;
read(is, rs{tG, 1, width == -1 ? 4u : static_cast<unsigned>(width)});
checked_set(G, tG, not_a_year, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'U':
if (command)
{
if (modified == CharT{})
{
int tU = not_a_week_num;
read(is, ru{tU, 1, width == -1 ? 2u : static_cast<unsigned>(width)});
checked_set(U, tU, not_a_week_num, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'V':
if (command)
{
if (modified == CharT{})
{
int tV = not_a_week_num;
read(is, ru{tV, 1, width == -1 ? 2u : static_cast<unsigned>(width)});
checked_set(V, tV, not_a_week_num, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'W':
if (command)
{
if (modified == CharT{})
{
int tW = not_a_week_num;
read(is, ru{tW, 1, width == -1 ? 2u : static_cast<unsigned>(width)});
checked_set(W, tW, not_a_week_num, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'E':
case 'O':
if (command)
{
if (modified == CharT{})
{
modified = *fmt;
}
else
{
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
}
else
read(is, *fmt);
break;
case '%':
if (command)
{
if (modified == CharT{})
read(is, *fmt);
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
command = fmt;
break;
case 'z':
if (command)
{
int tH, tM;
minutes toff = not_a_offset;
bool neg = false;
auto ic = is.peek();
if (!Traits::eq_int_type(ic, Traits::eof()))
{
auto c = static_cast<char>(Traits::to_char_type(ic));
if (c == '-')
neg = true;
}
if (modified == CharT{})
{
read(is, rs{tH, 2, 2});
if (!is.fail())
toff = hours{std::abs(tH)};
if (is.good())
{
ic = is.peek();
if (!Traits::eq_int_type(ic, Traits::eof()))
{
auto c = static_cast<char>(Traits::to_char_type(ic));
if ('0' <= c && c <= '9')
{
read(is, ru{tM, 2, 2});
if (!is.fail())
toff += minutes{tM};
}
}
}
}
else
{
read(is, rs{tH, 1, 2});
if (!is.fail())
toff = hours{std::abs(tH)};
if (is.good())
{
ic = is.peek();
if (!Traits::eq_int_type(ic, Traits::eof()))
{
auto c = static_cast<char>(Traits::to_char_type(ic));
if (c == ':')
{
(void)is.get();
read(is, ru{tM, 2, 2});
if (!is.fail())
toff += minutes{tM};
}
}
}
}
if (neg)
toff = -toff;
checked_set(temp_offset, toff, not_a_offset, is);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
case 'Z':
if (command)
{
if (modified == CharT{})
{
std::basic_string<CharT, Traits, Alloc> buf;
while (is.rdstate() == std::ios::goodbit)
{
auto i = is.rdbuf()->sgetc();
if (Traits::eq_int_type(i, Traits::eof()))
{
is.setstate(ios::eofbit);
break;
}
auto wc = Traits::to_char_type(i);
auto c = static_cast<char>(wc);
// is c a valid time zone name or abbreviation character?
if (!(CharT{1} < wc && wc < CharT{127}) || !(isalnum(c) ||
c == '_' || c == '/' || c == '-' || c == '+'))
break;
buf.push_back(c);
is.rdbuf()->sbumpc();
}
if (buf.empty())
is.setstate(ios::failbit);
checked_set(temp_abbrev, buf, {}, is);
}
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
else
read(is, *fmt);
break;
default:
if (command)
{
if (width == -1 && modified == CharT{} && '0' <= *fmt && *fmt <= '9')
{
width = static_cast<char>(*fmt) - '0';
while ('0' <= fmt[1] && fmt[1] <= '9')
width = 10*width + static_cast<char>(*++fmt) - '0';
}
else
{
if (modified == CharT{})
read(is, CharT{'%'}, width, *fmt);
else
read(is, CharT{'%'}, width, modified, *fmt);
command = nullptr;
width = -1;
modified = CharT{};
}
}
else // !command
{
if (isspace(static_cast<unsigned char>(*fmt)))
{
// space matches 0 or more white space characters
if (is.good())
ws(is);
}
else
read(is, *fmt);
}
break;
}
}
// is.fail() || *fmt == CharT{}
if (is.rdstate() == ios::goodbit && command)
{
if (modified == CharT{})
read(is, CharT{'%'}, width);
else
read(is, CharT{'%'}, width, modified);
}
if (!is.fail())
{
if (y != not_a_2digit_year)
{
// Convert y and an optional C to Y
if (!(0 <= y && y <= 99))
goto broken;
if (C == not_a_century)
{
if (Y == not_a_year)
{
if (y >= 69)
C = 19;
else
C = 20;
}
else
{
C = (Y >= 0 ? Y : Y-100) / 100;
}
}
int tY;
if (C >= 0)
tY = 100*C + y;
else
tY = 100*(C+1) - (y == 0 ? 100 : y);
if (Y != not_a_year && Y != tY)
goto broken;
Y = tY;
}
if (g != not_a_2digit_year)
{
// Convert g and an optional C to G
if (!(0 <= g && g <= 99))
goto broken;
if (C == not_a_century)
{
if (G == not_a_year)
{
if (g >= 69)
C = 19;
else
C = 20;
}
else
{
C = (G >= 0 ? G : G-100) / 100;
}
}
int tG;
if (C >= 0)
tG = 100*C + g;
else
tG = 100*(C+1) - (g == 0 ? 100 : g);
if (G != not_a_year && G != tG)
goto broken;
G = tG;
}
if (Y < static_cast<int>(year::min()) || Y > static_cast<int>(year::max()))
Y = not_a_year;
bool computed = false;
if (G != not_a_year && V != not_a_week_num && wd != not_a_weekday)
{
year_month_day ymd_trial = sys_days(year{G-1}/December/Thursday[last]) +
(Monday-Thursday) + weeks{V-1} +
(weekday{static_cast<unsigned>(wd)}-Monday);
if (Y == not_a_year)
Y = static_cast<int>(ymd_trial.year());
else if (year{Y} != ymd_trial.year())
goto broken;
if (m == not_a_month)
m = static_cast<int>(static_cast<unsigned>(ymd_trial.month()));
else if (month(static_cast<unsigned>(m)) != ymd_trial.month())
goto broken;
if (d == not_a_day)
d = static_cast<int>(static_cast<unsigned>(ymd_trial.day()));
else if (day(static_cast<unsigned>(d)) != ymd_trial.day())
goto broken;
computed = true;
}
if (Y != not_a_year && U != not_a_week_num && wd != not_a_weekday)
{
year_month_day ymd_trial = sys_days(year{Y}/January/Sunday[1]) +
weeks{U-1} +
(weekday{static_cast<unsigned>(wd)} - Sunday);
if (Y == not_a_year)
Y = static_cast<int>(ymd_trial.year());
else if (year{Y} != ymd_trial.year())
goto broken;
if (m == not_a_month)
m = static_cast<int>(static_cast<unsigned>(ymd_trial.month()));
else if (month(static_cast<unsigned>(m)) != ymd_trial.month())
goto broken;
if (d == not_a_day)
d = static_cast<int>(static_cast<unsigned>(ymd_trial.day()));
else if (day(static_cast<unsigned>(d)) != ymd_trial.day())
goto broken;
computed = true;
}
if (Y != not_a_year && W != not_a_week_num && wd != not_a_weekday)
{
year_month_day ymd_trial = sys_days(year{Y}/January/Monday[1]) +
weeks{W-1} +
(weekday{static_cast<unsigned>(wd)} - Monday);
if (Y == not_a_year)
Y = static_cast<int>(ymd_trial.year());
else if (year{Y} != ymd_trial.year())
goto broken;
if (m == not_a_month)
m = static_cast<int>(static_cast<unsigned>(ymd_trial.month()));
else if (month(static_cast<unsigned>(m)) != ymd_trial.month())
goto broken;
if (d == not_a_day)
d = static_cast<int>(static_cast<unsigned>(ymd_trial.day()));
else if (day(static_cast<unsigned>(d)) != ymd_trial.day())
goto broken;
computed = true;
}
if (j != not_a_doy && Y != not_a_year)
{
auto ymd_trial = year_month_day{local_days(year{Y}/1/1) + days{j-1}};
if (m == 0)
m = static_cast<int>(static_cast<unsigned>(ymd_trial.month()));
else if (month(static_cast<unsigned>(m)) != ymd_trial.month())
goto broken;
if (d == 0)
d = static_cast<int>(static_cast<unsigned>(ymd_trial.day()));
else if (day(static_cast<unsigned>(d)) != ymd_trial.day())
goto broken;
j = not_a_doy;
}
auto ymd = year{Y}/m/d;
if (ymd.ok())
{
if (wd == not_a_weekday)
wd = static_cast<int>((weekday(sys_days(ymd)) - Sunday).count());
else if (wd != static_cast<int>((weekday(sys_days(ymd)) - Sunday).count()))
goto broken;
if (!computed)
{
if (G != not_a_year || V != not_a_week_num)
{
sys_days sd = ymd;
auto G_trial = year_month_day{sd + days{3}}.year();
auto start = sys_days((G_trial - years{1})/December/Thursday[last]) +
(Monday - Thursday);
if (sd < start)
{
--G_trial;
if (V != not_a_week_num)
start = sys_days((G_trial - years{1})/December/Thursday[last])
+ (Monday - Thursday);
}
if (G != not_a_year && G != static_cast<int>(G_trial))
goto broken;
if (V != not_a_week_num)
{
auto V_trial = duration_cast<weeks>(sd - start).count() + 1;
if (V != V_trial)
goto broken;
}
}
if (U != not_a_week_num)
{
auto start = sys_days(Sunday[1]/January/ymd.year());
auto U_trial = floor<weeks>(sys_days(ymd) - start).count() + 1;
if (U != U_trial)
goto broken;
}
if (W != not_a_week_num)
{
auto start = sys_days(Monday[1]/January/ymd.year());
auto W_trial = floor<weeks>(sys_days(ymd) - start).count() + 1;
if (W != W_trial)
goto broken;
}
}
}
fds.ymd = ymd;
if (I != not_a_hour_12_value)
{
if (!(1 <= I && I <= 12))
goto broken;
if (p != not_a_ampm)
{
// p is in [0, 1] == [AM, PM]
// Store trial H in I
if (I == 12)
--p;
I += p*12;
// Either set H from I or make sure H and I are consistent
if (H == not_a_hour)
H = I;
else if (I != H)
goto broken;
}
else // p == not_a_ampm
{
// if H, make sure H and I could be consistent
if (H != not_a_hour)
{
if (I == 12)
{
if (H != 0 && H != 12)
goto broken;
}
else if (!(I == H || I == H+12))
{
goto broken;
}
}
}
}
if (H != not_a_hour)
{
fds.has_tod = true;
fds.tod = hh_mm_ss<Duration>{hours{H}};
}
if (M != not_a_minute)
{
fds.has_tod = true;
fds.tod.m_ = minutes{M};
}
if (s != not_a_second)
{
fds.has_tod = true;
fds.tod.s_ = detail::decimal_format_seconds<Duration>{s};
}
if (j != not_a_doy)
{
fds.has_tod = true;
fds.tod.h_ += hours{days{j}};
}
if (wd != not_a_weekday)
fds.wd = weekday{static_cast<unsigned>(wd)};
if (abbrev != nullptr)
*abbrev = std::move(temp_abbrev);
if (offset != nullptr && temp_offset != not_a_offset)
*offset = temp_offset;
}
return is;
}
broken:
is.setstate(ios::failbit);
return is;
}
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
std::basic_istream<CharT, Traits>&
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 CT = std::chrono::seconds;
fields<CT> fds{};
from_stream(is, fmt, fds, abbrev, offset);
if (!fds.ymd.year().ok())
is.setstate(std::ios::failbit);
if (!is.fail())
y = fds.ymd.year();
return is;
}
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
std::basic_istream<CharT, Traits>&
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 CT = std::chrono::seconds;
fields<CT> fds{};
from_stream(is, fmt, fds, abbrev, offset);
if (!fds.ymd.month().ok())
is.setstate(std::ios::failbit);
if (!is.fail())
m = fds.ymd.month();
return is;
}
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
std::basic_istream<CharT, Traits>&
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 CT = std::chrono::seconds;
fields<CT> fds{};
from_stream(is, fmt, fds, abbrev, offset);
if (!fds.ymd.day().ok())
is.setstate(std::ios::failbit);
if (!is.fail())
d = fds.ymd.day();
return is;
}
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
std::basic_istream<CharT, Traits>&
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 CT = std::chrono::seconds;
fields<CT> fds{};
from_stream(is, fmt, fds, abbrev, offset);
if (!fds.wd.ok())
is.setstate(std::ios::failbit);
if (!is.fail())
wd = fds.wd;
return is;
}
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
std::basic_istream<CharT, Traits>&
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 CT = std::chrono::seconds;
fields<CT> fds{};
from_stream(is, fmt, fds, abbrev, offset);
if (!fds.ymd.month().ok())
is.setstate(std::ios::failbit);
if (!is.fail())
ym = fds.ymd.year()/fds.ymd.month();
return is;
}
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
std::basic_istream<CharT, Traits>&
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 CT = std::chrono::seconds;
fields<CT> fds{};
from_stream(is, fmt, fds, abbrev, offset);
if (!fds.ymd.month().ok() || !fds.ymd.day().ok())
is.setstate(std::ios::failbit);
if (!is.fail())
md = fds.ymd.month()/fds.ymd.day();
return is;
}
template <class CharT, class Traits, class Alloc = std::allocator<CharT>>
std::basic_istream<CharT, Traits>&
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
year_month_day& ymd, std::basic_string<CharT, Traits, Alloc>* abbrev = nullptr,
std::chrono::minutes* offset = nullptr)
{
using CT = std::chrono::seconds;
fields<CT> fds{};
from_stream(is, fmt, fds, abbrev, offset);
if (!fds.ymd.ok())
is.setstate(std::ios::failbit);
if (!is.fail())
ymd = fds.ymd;
return is;
}
template <class Duration, class CharT, class Traits, class Alloc = std::allocator<CharT>>
std::basic_istream<CharT, Traits>&
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
sys_time<Duration>& tp, std::basic_string<CharT, Traits, Alloc>* abbrev = nullptr,
std::chrono::minutes* offset = nullptr)
{
using CT = typename std::common_type<Duration, std::chrono::seconds>::type;
using detail::round_i;
std::chrono::minutes offset_local{};
auto offptr = offset ? offset : &offset_local;
fields<CT> fds{};
fds.has_tod = true;
from_stream(is, fmt, fds, abbrev, offptr);
if (!fds.ymd.ok() || !fds.tod.in_conventional_range())
is.setstate(std::ios::failbit);
if (!is.fail())
tp = round_i<Duration>(sys_days(fds.ymd) - *offptr + fds.tod.to_duration());
return is;
}
template <class Duration, class CharT, class Traits, class Alloc = std::allocator<CharT>>
std::basic_istream<CharT, Traits>&
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
local_time<Duration>& tp, std::basic_string<CharT, Traits, Alloc>* abbrev = nullptr,
std::chrono::minutes* offset = nullptr)
{
using CT = typename std::common_type<Duration, std::chrono::seconds>::type;
using detail::round_i;
fields<CT> fds{};
fds.has_tod = true;
from_stream(is, fmt, fds, abbrev, offset);
if (!fds.ymd.ok() || !fds.tod.in_conventional_range())
is.setstate(std::ios::failbit);
if (!is.fail())
tp = round_i<Duration>(local_seconds{local_days(fds.ymd)} + fds.tod.to_duration());
return is;
}
template <class Rep, class Period, class CharT, class Traits, class Alloc = std::allocator<CharT>>
std::basic_istream<CharT, Traits>&
from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
std::chrono::duration<Rep, Period>& d,
std::basic_string<CharT, Traits, Alloc>* abbrev = nullptr,
std::chrono::minutes* offset = nullptr)
{
using Duration = std::chrono::duration<Rep, Period>;
using CT = typename std::common_type<Duration, std::chrono::seconds>::type;
fields<CT> fds{};
from_stream(is, fmt, fds, abbrev, offset);
if (!fds.has_tod)
is.setstate(std::ios::failbit);
if (!is.fail())
d = std::chrono::duration_cast<Duration>(fds.tod.to_duration());
return is;
}
template <class Parsable, class CharT, class Traits = std::char_traits<CharT>,
class Alloc = std::allocator<CharT>>
struct parse_manip
{
const std::basic_string<CharT, Traits, Alloc> format_;
Parsable& tp_;
std::basic_string<CharT, Traits, Alloc>* abbrev_;
std::chrono::minutes* offset_;
public:
parse_manip(std::basic_string<CharT, Traits, Alloc> format, Parsable& tp,
std::basic_string<CharT, Traits, Alloc>* abbrev = nullptr,
std::chrono::minutes* offset = nullptr)
: format_(std::move(format))
, tp_(tp)
, abbrev_(abbrev)
, offset_(offset)
{}
};
template <class Parsable, class CharT, class Traits, class Alloc>
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is,
const parse_manip<Parsable, CharT, Traits, Alloc>& x)
{
return from_stream(is, x.format_.c_str(), x.tp_, x.abbrev_, x.offset_);
}
template <class Parsable, class CharT, class Traits, class Alloc>
inline
auto
parse(const std::basic_string<CharT, Traits, Alloc>& format, Parsable& tp)
-> decltype(from_stream(std::declval<std::basic_istream<CharT, Traits>&>(),
format.c_str(), tp),
parse_manip<Parsable, CharT, Traits, Alloc>{format, tp})
{
return {format, tp};
}
template <class Parsable, class CharT, class Traits, class Alloc>
inline
auto
parse(const std::basic_string<CharT, Traits, Alloc>& format, Parsable& tp,
std::basic_string<CharT, Traits, Alloc>& abbrev)
-> decltype(from_stream(std::declval<std::basic_istream<CharT, Traits>&>(),
format.c_str(), tp, &abbrev),
parse_manip<Parsable, CharT, Traits, Alloc>{format, tp, &abbrev})
{
return {format, tp, &abbrev};
}
template <class Parsable, class CharT, class Traits, class Alloc>
inline
auto
parse(const std::basic_string<CharT, Traits, Alloc>& format, Parsable& tp,
std::chrono::minutes& offset)
-> decltype(from_stream(std::declval<std::basic_istream<CharT, Traits>&>(),
format.c_str(), tp,
std::declval<std::basic_string<CharT, Traits, Alloc>*>(),
&offset),
parse_manip<Parsable, CharT, Traits, Alloc>{format, tp, nullptr, &offset})
{
return {format, tp, nullptr, &offset};
}
template <class Parsable, class CharT, class Traits, class Alloc>
inline
auto
parse(const std::basic_string<CharT, Traits, Alloc>& format, Parsable& tp,
std::basic_string<CharT, Traits, Alloc>& abbrev, std::chrono::minutes& offset)
-> decltype(from_stream(std::declval<std::basic_istream<CharT, Traits>&>(),
format.c_str(), tp, &abbrev, &offset),
parse_manip<Parsable, CharT, Traits, Alloc>{format, tp, &abbrev, &offset})
{
return {format, tp, &abbrev, &offset};
}
// const CharT* formats
template <class Parsable, class CharT>
inline
auto
parse(const CharT* format, Parsable& tp)
-> decltype(from_stream(std::declval<std::basic_istream<CharT>&>(), format, tp),
parse_manip<Parsable, CharT>{format, tp})
{
return {format, tp};
}
template <class Parsable, class CharT, class Traits, class Alloc>
inline
auto
parse(const CharT* format, Parsable& tp, std::basic_string<CharT, Traits, Alloc>& abbrev)
-> decltype(from_stream(std::declval<std::basic_istream<CharT, Traits>&>(), format,
tp, &abbrev),
parse_manip<Parsable, CharT, Traits, Alloc>{format, tp, &abbrev})
{
return {format, tp, &abbrev};
}
template <class Parsable, class CharT>
inline
auto
parse(const CharT* format, Parsable& tp, std::chrono::minutes& offset)
-> decltype(from_stream(std::declval<std::basic_istream<CharT>&>(), format,
tp, std::declval<std::basic_string<CharT>*>(), &offset),
parse_manip<Parsable, CharT>{format, tp, nullptr, &offset})
{
return {format, tp, nullptr, &offset};
}
template <class Parsable, class CharT, class Traits, class Alloc>
inline
auto
parse(const CharT* format, Parsable& tp,
std::basic_string<CharT, Traits, Alloc>& abbrev, std::chrono::minutes& offset)
-> decltype(from_stream(std::declval<std::basic_istream<CharT, Traits>&>(), format,
tp, &abbrev, &offset),
parse_manip<Parsable, CharT, Traits, Alloc>{format, tp, &abbrev, &offset})
{
return {format, tp, &abbrev, &offset};
}
// duration streaming
template <class CharT, class Traits, class Rep, class Period>
inline
std::basic_ostream<CharT, Traits>&
operator<<(std::basic_ostream<CharT, Traits>& os,
const std::chrono::duration<Rep, Period>& d)
{
return os << detail::make_string<CharT, Traits>::from(d.count()) +
detail::get_units<CharT>(typename Period::type{});
}
} // namespace date
#ifdef _MSC_VER
# pragma warning(pop)
#endif
#ifdef __GNUC__
# pragma GCC diagnostic pop
#endif
#endif // DATE_H
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