mirror of
https://github.com/ToruNiina/toml11.git
synced 2024-11-29 23:41:05 +00:00
541 lines
18 KiB
C++
541 lines
18 KiB
C++
// Copyright Toru Niina 2017.
|
|
// Distributed under the MIT License.
|
|
#ifndef TOML11_DATETIME
|
|
#define TOML11_DATETIME
|
|
#include <chrono>
|
|
#include <tuple>
|
|
#include <array>
|
|
#include <ostream>
|
|
#include <iomanip>
|
|
#include <cstdint>
|
|
#include <cstdlib>
|
|
#include <ctime>
|
|
|
|
namespace toml
|
|
{
|
|
|
|
enum class month_t : std::int8_t
|
|
{
|
|
Jan = 0,
|
|
Feb = 1,
|
|
Mar = 2,
|
|
Apr = 3,
|
|
May = 4,
|
|
Jun = 5,
|
|
Jul = 6,
|
|
Aug = 7,
|
|
Sep = 8,
|
|
Oct = 9,
|
|
Nov = 10,
|
|
Dec = 11
|
|
};
|
|
|
|
struct local_date
|
|
{
|
|
std::int16_t year; // A.D. (like, 2018)
|
|
std::uint8_t month; // [0, 11]
|
|
std::uint8_t day; // [1, 31]
|
|
|
|
local_date(int y, month_t m, int d)
|
|
: year (static_cast<std::int16_t>(y)),
|
|
month(static_cast<std::uint8_t>(m)),
|
|
day (static_cast<std::uint8_t>(d))
|
|
{}
|
|
|
|
explicit local_date(const std::tm& t)
|
|
: year (static_cast<std::int16_t>(t.tm_year + 1900)),
|
|
month(static_cast<std::uint8_t>(t.tm_mon)),
|
|
day (static_cast<std::uint8_t>(t.tm_mday))
|
|
{}
|
|
|
|
explicit local_date(const std::chrono::system_clock::time_point& tp)
|
|
{
|
|
const auto t = std::chrono::system_clock::to_time_t(tp);
|
|
const auto tmp = std::localtime(&t); //XXX: not threadsafe!
|
|
assert(tmp); // if std::localtime fails, tmp is nullptr
|
|
const std::tm time = *tmp;
|
|
*this = local_date(time);
|
|
}
|
|
|
|
explicit local_date(const std::time_t t)
|
|
: local_date(std::chrono::system_clock::from_time_t(t))
|
|
{}
|
|
|
|
operator std::chrono::system_clock::time_point() const
|
|
{
|
|
// std::mktime returns date as local time zone. no conversion needed
|
|
std::tm t;
|
|
t.tm_sec = 0;
|
|
t.tm_min = 0;
|
|
t.tm_hour = 0;
|
|
t.tm_mday = this->day;
|
|
t.tm_mon = this->month;
|
|
t.tm_year = this->year - 1900;
|
|
t.tm_wday = 0; // the value will be ignored
|
|
t.tm_yday = 0; // the value will be ignored
|
|
t.tm_isdst = -1;
|
|
return std::chrono::system_clock::from_time_t(std::mktime(&t));
|
|
}
|
|
|
|
operator std::time_t() const
|
|
{
|
|
return std::chrono::system_clock::to_time_t(
|
|
std::chrono::system_clock::time_point(*this));
|
|
}
|
|
|
|
local_date() = default;
|
|
~local_date() = default;
|
|
local_date(local_date const&) = default;
|
|
local_date(local_date&&) = default;
|
|
local_date& operator=(local_date const&) = default;
|
|
local_date& operator=(local_date&&) = default;
|
|
};
|
|
|
|
inline bool operator==(const local_date& lhs, const local_date& rhs)
|
|
{
|
|
return std::make_tuple(lhs.year, lhs.month, lhs.day) ==
|
|
std::make_tuple(rhs.year, rhs.month, rhs.day);
|
|
}
|
|
inline bool operator!=(const local_date& lhs, const local_date& rhs)
|
|
{
|
|
return !(lhs == rhs);
|
|
}
|
|
inline bool operator< (const local_date& lhs, const local_date& rhs)
|
|
{
|
|
return std::make_tuple(lhs.year, lhs.month, lhs.day) <
|
|
std::make_tuple(rhs.year, rhs.month, rhs.day);
|
|
}
|
|
inline bool operator<=(const local_date& lhs, const local_date& rhs)
|
|
{
|
|
return (lhs < rhs) || (lhs == rhs);
|
|
}
|
|
inline bool operator> (const local_date& lhs, const local_date& rhs)
|
|
{
|
|
return !(lhs <= rhs);
|
|
}
|
|
inline bool operator>=(const local_date& lhs, const local_date& rhs)
|
|
{
|
|
return !(lhs < rhs);
|
|
}
|
|
|
|
template<typename charT, typename traits>
|
|
std::basic_ostream<charT, traits>&
|
|
operator<<(std::basic_ostream<charT, traits>& os, const local_date& date)
|
|
{
|
|
os << std::setfill('0') << std::setw(4) << static_cast<int>(date.year ) << '-';
|
|
os << std::setfill('0') << std::setw(2) << static_cast<int>(date.month + 1) << '-';
|
|
os << std::setfill('0') << std::setw(2) << static_cast<int>(date.day );
|
|
return os;
|
|
}
|
|
|
|
struct local_time
|
|
{
|
|
std::uint8_t hour; // [0, 23]
|
|
std::uint8_t minute; // [0, 59]
|
|
std::uint8_t second; // [0, 60]
|
|
std::uint16_t millisecond; // [0, 999]
|
|
std::uint16_t microsecond; // [0, 999]
|
|
std::uint16_t nanosecond; // [0, 999]
|
|
|
|
local_time(int h, int m, int s,
|
|
int ms = 0, int us = 0, int ns = 0)
|
|
: hour (static_cast<std::uint8_t>(h)),
|
|
minute(static_cast<std::uint8_t>(m)),
|
|
second(static_cast<std::uint8_t>(s)),
|
|
millisecond(static_cast<std::uint16_t>(ms)),
|
|
microsecond(static_cast<std::uint16_t>(us)),
|
|
nanosecond (static_cast<std::uint16_t>(ns))
|
|
{}
|
|
|
|
explicit local_time(const std::tm& t)
|
|
: hour (static_cast<std::uint8_t>(t.tm_hour)),
|
|
minute(static_cast<std::uint8_t>(t.tm_min)),
|
|
second(static_cast<std::uint8_t>(t.tm_sec)),
|
|
millisecond(0), microsecond(0), nanosecond(0)
|
|
{}
|
|
|
|
template<typename Rep, typename Period>
|
|
explicit local_time(const std::chrono::duration<Rep, Period>& t)
|
|
{
|
|
const auto h = std::chrono::duration_cast<std::chrono::hours>(t);
|
|
this->hour = h.count();
|
|
const auto t2 = t - h;
|
|
const auto m = std::chrono::duration_cast<std::chrono::minutes>(t2);
|
|
this->minute = m.count();
|
|
const auto t3 = t2 - m;
|
|
const auto s = std::chrono::duration_cast<std::chrono::seconds>(t3);
|
|
this->second = s.count();
|
|
const auto t4 = t3 - s;
|
|
const auto ms = std::chrono::duration_cast<std::chrono::milliseconds>(t4);
|
|
this->millisecond = ms.count();
|
|
const auto t5 = t4 - ms;
|
|
const auto us = std::chrono::duration_cast<std::chrono::microseconds>(t5);
|
|
this->microsecond = us.count();
|
|
const auto t6 = t5 - us;
|
|
const auto ns = std::chrono::duration_cast<std::chrono::nanoseconds>(t6);
|
|
this->nanosecond = ns.count();
|
|
}
|
|
|
|
operator std::chrono::nanoseconds() const
|
|
{
|
|
return std::chrono::nanoseconds (this->nanosecond) +
|
|
std::chrono::microseconds(this->microsecond) +
|
|
std::chrono::milliseconds(this->millisecond) +
|
|
std::chrono::seconds(this->second) +
|
|
std::chrono::minutes(this->minute) +
|
|
std::chrono::hours(this->hour);
|
|
}
|
|
|
|
local_time() = default;
|
|
~local_time() = default;
|
|
local_time(local_time const&) = default;
|
|
local_time(local_time&&) = default;
|
|
local_time& operator=(local_time const&) = default;
|
|
local_time& operator=(local_time&&) = default;
|
|
};
|
|
|
|
inline bool operator==(const local_time& lhs, const local_time& rhs)
|
|
{
|
|
return std::make_tuple(lhs.hour, lhs.minute, lhs.second, lhs.millisecond, lhs.microsecond, lhs.nanosecond) ==
|
|
std::make_tuple(rhs.hour, rhs.minute, rhs.second, rhs.millisecond, rhs.microsecond, rhs.nanosecond);
|
|
}
|
|
inline bool operator!=(const local_time& lhs, const local_time& rhs)
|
|
{
|
|
return !(lhs == rhs);
|
|
}
|
|
inline bool operator< (const local_time& lhs, const local_time& rhs)
|
|
{
|
|
return std::make_tuple(lhs.hour, lhs.minute, lhs.second, lhs.millisecond, lhs.microsecond, lhs.nanosecond) <
|
|
std::make_tuple(rhs.hour, rhs.minute, rhs.second, rhs.millisecond, rhs.microsecond, rhs.nanosecond);
|
|
}
|
|
inline bool operator<=(const local_time& lhs, const local_time& rhs)
|
|
{
|
|
return (lhs < rhs) || (lhs == rhs);
|
|
}
|
|
inline bool operator> (const local_time& lhs, const local_time& rhs)
|
|
{
|
|
return !(lhs <= rhs);
|
|
}
|
|
inline bool operator>=(const local_time& lhs, const local_time& rhs)
|
|
{
|
|
return !(lhs < rhs);
|
|
}
|
|
|
|
template<typename charT, typename traits>
|
|
std::basic_ostream<charT, traits>&
|
|
operator<<(std::basic_ostream<charT, traits>& os, const local_time& time)
|
|
{
|
|
os << std::setfill('0') << std::setw(2) << static_cast<int>(time.hour ) << ':';
|
|
os << std::setfill('0') << std::setw(2) << static_cast<int>(time.minute) << ':';
|
|
os << std::setfill('0') << std::setw(2) << static_cast<int>(time.second);
|
|
if(time.millisecond != 0 || time.microsecond != 0 || time.nanosecond != 0)
|
|
{
|
|
os << '.';
|
|
os << std::setfill('0') << std::setw(3) << static_cast<int>(time.millisecond);
|
|
if(time.microsecond != 0 || time.nanosecond != 0)
|
|
{
|
|
os << std::setfill('0') << std::setw(3) << static_cast<int>(time.microsecond);
|
|
if(time.nanosecond != 0)
|
|
{
|
|
os << std::setfill('0') << std::setw(3) << static_cast<int>(time.nanosecond);
|
|
}
|
|
}
|
|
}
|
|
return os;
|
|
}
|
|
|
|
struct time_offset
|
|
{
|
|
std::int8_t hour; // [-12, 12]
|
|
std::int8_t minute; // [-59, 59]
|
|
|
|
time_offset(int h, int m)
|
|
: hour (static_cast<std::int8_t>(h)),
|
|
minute(static_cast<std::int8_t>(m))
|
|
{}
|
|
|
|
operator std::chrono::minutes() const
|
|
{
|
|
return std::chrono::minutes(this->minute) +
|
|
std::chrono::hours(this->hour);
|
|
}
|
|
|
|
time_offset() = default;
|
|
~time_offset() = default;
|
|
time_offset(time_offset const&) = default;
|
|
time_offset(time_offset&&) = default;
|
|
time_offset& operator=(time_offset const&) = default;
|
|
time_offset& operator=(time_offset&&) = default;
|
|
};
|
|
|
|
inline bool operator==(const time_offset& lhs, const time_offset& rhs)
|
|
{
|
|
return std::make_tuple(lhs.hour, lhs.minute) ==
|
|
std::make_tuple(rhs.hour, rhs.minute);
|
|
}
|
|
inline bool operator!=(const time_offset& lhs, const time_offset& rhs)
|
|
{
|
|
return !(lhs == rhs);
|
|
}
|
|
inline bool operator< (const time_offset& lhs, const time_offset& rhs)
|
|
{
|
|
return std::make_tuple(lhs.hour, lhs.minute) <
|
|
std::make_tuple(rhs.hour, rhs.minute);
|
|
}
|
|
inline bool operator<=(const time_offset& lhs, const time_offset& rhs)
|
|
{
|
|
return (lhs < rhs) || (lhs == rhs);
|
|
}
|
|
inline bool operator> (const time_offset& lhs, const time_offset& rhs)
|
|
{
|
|
return !(lhs <= rhs);
|
|
}
|
|
inline bool operator>=(const time_offset& lhs, const time_offset& rhs)
|
|
{
|
|
return !(lhs < rhs);
|
|
}
|
|
|
|
template<typename charT, typename traits>
|
|
std::basic_ostream<charT, traits>&
|
|
operator<<(std::basic_ostream<charT, traits>& os, const time_offset& offset)
|
|
{
|
|
if(offset.hour == 0 && offset.minute == 0)
|
|
{
|
|
os << 'Z';
|
|
return os;
|
|
}
|
|
if(static_cast<int>(offset.hour) * static_cast<int>(offset.minute) < 0)
|
|
{
|
|
const int min = static_cast<int>(offset.hour) * 60 + offset.minute;
|
|
if(min < 0){os << '-';} else {os << '+';}
|
|
os << std::setfill('0') << std::setw(2) << min / 60 << ':';
|
|
os << std::setfill('0') << std::setw(2) << min % 60;
|
|
return os;
|
|
}
|
|
if(offset.hour < 0){os << '-';} else {os << '+';}
|
|
os << std::setfill('0') << std::setw(2) << static_cast<int>(offset.hour) << ':';
|
|
os << std::setfill('0') << std::setw(2) << static_cast<int>(offset.minute);
|
|
return os;
|
|
}
|
|
|
|
struct local_datetime
|
|
{
|
|
local_date date;
|
|
local_time time;
|
|
|
|
local_datetime(local_date d, local_time t): date(d), time(t) {}
|
|
|
|
explicit local_datetime(const std::tm& t): date(t), time(t){}
|
|
|
|
explicit local_datetime(const std::chrono::system_clock::time_point& tp)
|
|
{
|
|
const auto t = std::chrono::system_clock::to_time_t(tp);
|
|
const auto tmp = std::localtime(&t); //XXX: not threadsafe!
|
|
assert(tmp); // if std::localtime fails, tmp is nullptr
|
|
|
|
std::tm time = *tmp;
|
|
this->date = local_date(time);
|
|
this->time = local_time(time);
|
|
|
|
// std::tm lacks subsecond information, so diff between tp and tm
|
|
// can be used to get millisecond & microsecond information.
|
|
const auto t_diff = tp -
|
|
std::chrono::system_clock::from_time_t(std::mktime(&time));
|
|
this->time.millisecond = std::chrono::duration_cast<
|
|
std::chrono::milliseconds>(t_diff).count();
|
|
this->time.microsecond = std::chrono::duration_cast<
|
|
std::chrono::microseconds>(t_diff).count();
|
|
this->time.nanosecond = std::chrono::duration_cast<
|
|
std::chrono::nanoseconds >(t_diff).count();
|
|
}
|
|
|
|
explicit local_datetime(const std::time_t t)
|
|
: local_datetime(std::chrono::system_clock::from_time_t(t))
|
|
{}
|
|
|
|
operator std::chrono::system_clock::time_point() const
|
|
{
|
|
using internal_duration =
|
|
typename std::chrono::system_clock::time_point::duration;
|
|
// std::mktime returns date as local time zone. no conversion needed
|
|
auto dt = std::chrono::system_clock::time_point(this->date);
|
|
dt += std::chrono::duration_cast<internal_duration>(
|
|
std::chrono::nanoseconds(this->time));
|
|
return dt;
|
|
}
|
|
|
|
operator std::time_t() const
|
|
{
|
|
return std::chrono::system_clock::to_time_t(
|
|
std::chrono::system_clock::time_point(*this));
|
|
}
|
|
|
|
local_datetime() = default;
|
|
~local_datetime() = default;
|
|
local_datetime(local_datetime const&) = default;
|
|
local_datetime(local_datetime&&) = default;
|
|
local_datetime& operator=(local_datetime const&) = default;
|
|
local_datetime& operator=(local_datetime&&) = default;
|
|
};
|
|
|
|
inline bool operator==(const local_datetime& lhs, const local_datetime& rhs)
|
|
{
|
|
return std::make_tuple(lhs.date, lhs.time) ==
|
|
std::make_tuple(rhs.date, rhs.time);
|
|
}
|
|
inline bool operator!=(const local_datetime& lhs, const local_datetime& rhs)
|
|
{
|
|
return !(lhs == rhs);
|
|
}
|
|
inline bool operator< (const local_datetime& lhs, const local_datetime& rhs)
|
|
{
|
|
return std::make_tuple(lhs.date, lhs.time) <
|
|
std::make_tuple(rhs.date, rhs.time);
|
|
}
|
|
inline bool operator<=(const local_datetime& lhs, const local_datetime& rhs)
|
|
{
|
|
return (lhs < rhs) || (lhs == rhs);
|
|
}
|
|
inline bool operator> (const local_datetime& lhs, const local_datetime& rhs)
|
|
{
|
|
return !(lhs <= rhs);
|
|
}
|
|
inline bool operator>=(const local_datetime& lhs, const local_datetime& rhs)
|
|
{
|
|
return !(lhs < rhs);
|
|
}
|
|
|
|
template<typename charT, typename traits>
|
|
std::basic_ostream<charT, traits>&
|
|
operator<<(std::basic_ostream<charT, traits>& os, const local_datetime& dt)
|
|
{
|
|
os << dt.date << 'T' << dt.time;
|
|
return os;
|
|
}
|
|
|
|
struct offset_datetime
|
|
{
|
|
local_date date;
|
|
local_time time;
|
|
time_offset offset;
|
|
|
|
offset_datetime(local_date d, local_time t, time_offset o)
|
|
: date(d), time(t), offset(o)
|
|
{}
|
|
offset_datetime(const local_datetime& dt, time_offset o)
|
|
: date(dt.date), time(dt.time), offset(o)
|
|
{}
|
|
explicit offset_datetime(const local_datetime& ld)
|
|
: date(ld.date), time(ld.time), offset(get_local_offset())
|
|
{}
|
|
explicit offset_datetime(const std::chrono::system_clock::time_point& tp)
|
|
: offset_datetime(local_datetime(tp))
|
|
{}
|
|
explicit offset_datetime(const std::time_t& t)
|
|
: offset_datetime(local_datetime(t))
|
|
{}
|
|
explicit offset_datetime(const std::tm& t)
|
|
: offset_datetime(local_datetime(t))
|
|
{}
|
|
|
|
operator std::chrono::system_clock::time_point() const
|
|
{
|
|
// get date-time
|
|
using internal_duration =
|
|
typename std::chrono::system_clock::time_point::duration;
|
|
std::chrono::system_clock::time_point tp =
|
|
std::chrono::system_clock::time_point(this->date) +
|
|
std::chrono::duration_cast<internal_duration>(
|
|
std::chrono::nanoseconds(this->time));
|
|
|
|
// get date-time in UTC. let's say we are in +09:00 (JPN).
|
|
// writing 12:00:00 in +09:00 means 03:00:00Z. to represent
|
|
// 12:00:00Z, first we need to add +09:00.
|
|
const auto ofs = get_local_offset();
|
|
tp += std::chrono::hours (ofs.hour);
|
|
tp += std::chrono::minutes(ofs.minute);
|
|
|
|
// here, tp represents 12:00:00 in UTC but we have offset information.
|
|
// we need to subtract it. For example, let's say the input is
|
|
// 12:00:00-08:00. now we have tp = 12:00:00Z as a result of the above
|
|
// conversion. But the actual time we need to return is 20:00:00Z
|
|
// because of -08:00.
|
|
tp -= std::chrono::minutes(this->offset);
|
|
return tp;
|
|
}
|
|
|
|
operator std::time_t() const
|
|
{
|
|
return std::chrono::system_clock::to_time_t(
|
|
std::chrono::system_clock::time_point(*this));
|
|
}
|
|
|
|
offset_datetime() = default;
|
|
~offset_datetime() = default;
|
|
offset_datetime(offset_datetime const&) = default;
|
|
offset_datetime(offset_datetime&&) = default;
|
|
offset_datetime& operator=(offset_datetime const&) = default;
|
|
offset_datetime& operator=(offset_datetime&&) = default;
|
|
|
|
private:
|
|
|
|
static time_offset get_local_offset()
|
|
{
|
|
// get current timezone
|
|
const auto tmp1 = std::time(nullptr);
|
|
const auto tmp2 = std::localtime(&tmp1); // XXX not threadsafe!
|
|
assert(tmp2);
|
|
std::tm t = *tmp2;
|
|
|
|
std::array<char, 6> buf;
|
|
const auto result = std::strftime(buf.data(), 6, "%z", &t); // +hhmm\0
|
|
if(result != 5)
|
|
{
|
|
throw std::runtime_error("toml::offset_datetime: cannot obtain "
|
|
"timezone information of current env");
|
|
}
|
|
const int ofs = std::atoi(buf.data());
|
|
const int ofs_h = ofs / 100;
|
|
const int ofs_m = ofs - (ofs_h * 100);
|
|
return time_offset(ofs_h, ofs_m);
|
|
}
|
|
};
|
|
|
|
inline bool operator==(const offset_datetime& lhs, const offset_datetime& rhs)
|
|
{
|
|
return std::make_tuple(lhs.date, lhs.time, lhs.offset) ==
|
|
std::make_tuple(rhs.date, rhs.time, rhs.offset);
|
|
}
|
|
inline bool operator!=(const offset_datetime& lhs, const offset_datetime& rhs)
|
|
{
|
|
return !(lhs == rhs);
|
|
}
|
|
inline bool operator< (const offset_datetime& lhs, const offset_datetime& rhs)
|
|
{
|
|
return std::make_tuple(lhs.date, lhs.time, lhs.offset) <
|
|
std::make_tuple(rhs.date, rhs.time, rhs.offset);
|
|
}
|
|
inline bool operator<=(const offset_datetime& lhs, const offset_datetime& rhs)
|
|
{
|
|
return (lhs < rhs) || (lhs == rhs);
|
|
}
|
|
inline bool operator> (const offset_datetime& lhs, const offset_datetime& rhs)
|
|
{
|
|
return !(lhs <= rhs);
|
|
}
|
|
inline bool operator>=(const offset_datetime& lhs, const offset_datetime& rhs)
|
|
{
|
|
return !(lhs < rhs);
|
|
}
|
|
|
|
template<typename charT, typename traits>
|
|
std::basic_ostream<charT, traits>&
|
|
operator<<(std::basic_ostream<charT, traits>& os, const offset_datetime& dt)
|
|
{
|
|
os << dt.date << 'T' << dt.time << dt.offset;
|
|
return os;
|
|
}
|
|
|
|
}//toml
|
|
#endif// TOML11_DATETIME
|