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Added note about UTC.

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Per Malmberg 2018-03-11 19:07:35 +01:00
parent d7c17be4d1
commit be2b4424a1
2 changed files with 26 additions and 2 deletions
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9
README.md
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@ -1,6 +1,10 @@
# libcron # libcron
A C++ scheduling library using cron formatting. A C++ scheduling library using cron formatting.
# Time zones
This library uses `std::chrono::system_clock::timepoint` as its time unit, thus all calculations are in UTC.
# Supported formatting # Supported formatting
This implementation supports cron format, as specified below. This implementation supports cron format, as specified below.
@ -60,3 +64,8 @@ the '?'-character unless one field already is something other than '*'.
|0 0 12 * * MON-FRI | Every Weekday at noon |0 0 12 * * MON-FRI | Every Weekday at noon
|0 0 12 1/2 * ? | Every 2 days, starting on the 1st at noon |0 0 12 1/2 * ? | Every 2 days, starting on the 1st at noon
| 0 0 */12 ? * * | Every twelve hours | 0 0 */12 ? * * | Every twelve hours
# Third party libraries
Howard Hinnant's [date.h](https://github.com/HowardHinnant/date/)

17
test/CronScheduleTest.cpp
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@ -207,9 +207,24 @@ SCENARIO("Examples from README.md")
DT(2018_y / 8 / 16, hours{12}), DT(2018_y / 8 / 16, hours{12}),
DT(2018_y / 8 / 17, hours{0}) DT(2018_y / 8 / 17, hours{0})
})); }));
} }
//SCENARIO("Daylight Savings Time")
//{
// // In sweden when local standard time is about to reach
// //Sunday, 25 March 2018, 02:00:00 clocks are turned forward 1 hour to
// //Sunday, 25 March 2018, 03:00:00 local daylight time instead.
//
// REQUIRE(test("0 0 * * * ?", DT(2018_y / 3 / 25, hours{0}),
// {
// DT(2018_y / 3 / 25, hours{0}),
// DT(2018_y / 3 / 25, hours{1}),
// // This hour disappear! DT(2018_y / 3 / 25, hours{2}),
// DT(2018_y / 3 / 25, hours{3}),
// DT(2018_y / 3 / 25, hours{4})
// }));
//}
SCENARIO("Unable to calculate time point") SCENARIO("Unable to calculate time point")
{ {
// TODO: Find a schedule that is unsolvable. // TODO: Find a schedule that is unsolvable.