xlnt/source/utils/datetime.cpp
2016-07-20 19:04:44 -04:00

103 lines
3.2 KiB
C++

// Copyright (c) 2014-2016 Thomas Fussell
//
// 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, WRISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE
//
// @license: http://www.opensource.org/licenses/mit-license.php
// @author: see AUTHORS file
#include <cmath>
#include <ctime>
#include <xlnt/utils/datetime.hpp>
#include <xlnt/utils/date.hpp>
#include <xlnt/utils/time.hpp>
namespace {
std::tm safe_localtime(std::time_t raw_time)
{
#ifdef _MSC_VER
std::tm result;
localtime_s(&result, &raw_time);
return result;
#else
return *localtime(&raw_time);
#endif
}
} // namespace
namespace xlnt {
datetime datetime::from_number(long double raw_time, calendar base_date)
{
auto date_part = date::from_number((int)raw_time, base_date);
auto time_part = time::from_number(raw_time);
return datetime(date_part.year, date_part.month, date_part.day, time_part.hour, time_part.minute, time_part.second,
time_part.microsecond);
}
bool datetime::operator==(const datetime &comparand) const
{
return year == comparand.year && month == comparand.month && day == comparand.day && hour == comparand.hour &&
minute == comparand.minute && second == comparand.second && microsecond == comparand.microsecond;
}
long double datetime::to_number(calendar base_date) const
{
return date(year, month, day).to_number(base_date) + time(hour, minute, second, microsecond).to_number();
}
std::string datetime::to_string() const
{
return std::to_string(year) + "/" + std::to_string(month) + "/" + std::to_string(day) + " " + std::to_string(hour) +
":" + std::to_string(minute) + ":" + std::to_string(second) + ":" + std::to_string(microsecond);
}
datetime datetime::now()
{
std::tm now = safe_localtime(std::time(0));
return datetime(1900 + now.tm_year, now.tm_mon + 1, now.tm_mday, now.tm_hour, now.tm_min, now.tm_sec);
}
datetime datetime::today()
{
return now();
}
datetime::datetime(int year_, int month_, int day_, int hour_, int minute_, int second_, int microsecond_)
: year(year_),
month(month_),
day(day_),
hour(hour_),
minute(minute_),
second(second_),
microsecond(microsecond_)
{
}
int datetime::weekday() const
{
return date(year, month, day).weekday();
}
} // namespace xlnt