18 releases (6 stable)
1.3.2 | Jun 29, 2020 |
---|---|
1.3.1 | Jan 7, 2020 |
1.0.3 | Dec 29, 2019 |
1.0.1 | May 26, 2019 |
0.4.0 | Mar 12, 2019 |
#427 in Date and time
46 downloads per month
Used in heca
145KB
2K
SLoC
heca-lib
heca-lib
heca-lib is a blazingly fast Hebrew calender library. It's the backend behind the heca program.
Usage:
- Add to Cargo.toml:
[dependencies]
heca-lib = "1.3"
- Import the types:
use heca_lib::prelude::*;
use heca_lib::*;
Overview:
Convert:
This library can convert from Hebrew to Gregorian dates and back. You can get a HebrewDate either from a known Hebrew date or from a Gregorian date:
extern crate heca_lib;
use chrono::Utc;
use chrono::offset::TimeZone;
use heca_lib::prelude::*;
use heca_lib::HebrewDate;
assert_eq!(HebrewDate::from_gregorian(Utc.ymd(2018,9,10).and_hms(17,59,59)).unwrap(),HebrewDate::from_ymd(5779,HebrewMonth::Tishrei,1).unwrap());
You can then get back a Gregorian date from this Hebrew Date.
extern crate heca_lib;
use chrono::Utc;
use chrono::offset::TimeZone;
use heca_lib::{HebrewDate};
use heca_lib::prelude::*;
assert_eq!(HebrewDate::from_ymd(5779,HebrewMonth::Tishrei,10).unwrap().to_gregorian(),Utc.ymd(2018, 9,18).and_hms(18,00,00));
Get Information on the Hebrew Year
This library can also list the major Jewish holidays and Torah readings in a given year (for both Israel and the Diaspora):
extern crate heca_lib;
use heca_lib::{HebrewYear,HebrewDate};
use heca_lib::prelude::*;
assert_eq!(HebrewYear::new(5779).unwrap().get_holidays(Location::Chul, &[TorahReadingType::Shabbos])[0].name(), TorahReading::Shabbos(Parsha::Vayelach));
assert_eq!(HebrewYear::new(5779).unwrap().get_holidays(Location::Chul, &[TorahReadingType::SpecialParsha]).iter().find(|x| x.name() == TorahReading::SpecialParsha(SpecialParsha::Zachor)).unwrap().day(),HebrewDate::from_ymd(5779,HebrewMonth::Adar2,9).unwrap());
Notes:
- This library won't work for years before 3764 (4).
- I tested this library against hebcal for all Rosh Hashanas between 3764 and 9999 (4-6239). I also checked it for all Rosh Chodesh Adars in those years. However, I take no resposibility if you accidently keep Yom Tov on the wrong day!
Current version: 1.3.1
License: MIT
Dependencies
~1.9–2.7MB
~52K SLoC