libcron
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PerMalmberg
added timezone support
Linux test passed Ubuntu 22.04 gcc-11.4.0 Windows test passed Windows 10 MSVC 19.34.31937.0
Windows took quite long to setup with libcurl and openssl. Looks like date-tz from date on windows uses 7-Zip to unpack the received tar ball, so it's not really straightforward using it on Windows.
I think we can stick to PC for now, no need to do something no one has asked for.
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From: Philemon Benner @.> Sent: Thursday, February 22, 2024 9:48:07 PM To: PerMalmberg/libcron @.> Cc: Per Malmberg @.>; Comment @.> Subject: Re: [PerMalmberg/libcron] added timezone support (PR #34)
@BestITUserEUW commented on this pull request.
In README.mdhttps://github.com/PerMalmberg/libcron/pull/34#discussion_r1499916365:
+``` +Cron<TzClock> cron; +if(cron.get_clock().set_time_zone("Africa/Maputo"))
- std::cout << "Successfully set timezone to: Africa/Maputo \n"; +else
- std::cout << "Failed to set timezone to: Africa/Maputo \n"; +```
+libcron::TzClock behaves like libcron::UTCClock if no timezone is set.
+
+If you want to use TzClock you have to set -DLIBCRON_BUILD_TZ_CLOCK=ON when building libcron. TzClock is a fully optional feature
+if you don't enable it, it won't be build at all.
+
+Using TzClock has the following side effects:
-
- Date requires linkage to
libcurl
- Date requires linkage to
-
- First time TzClocks timezone lookup will occur it will download the most up to date timezone: "~/Downloads/tzdata" ("%homedrive%%homepath%\downloads\tzdata" on Windows).
I will have a look on Sunday if anything of the following will be possible. Setting database install path will be possible out of the box from date-tz but only at build time trough -DINSTALL=/some/path. I'm sure embedded is possible but would require a good amount of work, like different platform support (Arduino, ESP-IDF, Micro-python, Rust), either embedding db into flash at compile time or using Eeprom at runtime to store latest db, if you are targeting microcontrollers. I don't think I will have time doing all of this.
