Zemen - የ ኢትዮጵያ ቀን መቁጠሪያ

Introduction

A date conversion crate to convert between ethiopian and gregorian dates. We have a custom struct to represent ethiopian date, i.e. Zemen, and we are using an external crate time, and specifically time::Date, to represent gregorian dates.

The crate uses the Beyene-Kudlek algorithm to convert between jdn (Julian Day number) and ethiopic calender. And the time crate to convert between jdn (Julian Day number) and gregorian date.

Docs can be found here.

Installation

cargo add zemen

Usage

use time::{Date, Month};
use zemen::{Zemen, Werh};

// creating dates
// Werh means month in Ge'ez
let qen = Zemen::from_eth_cal(1992, Werh::Tahasass, 22)?;
let date = Date::from_calendar_date(2000, Month::January, 1)?;

// conversion
let converted_day = Date::from(&qen);
let converted_qen = Zemen::from(&date);

println!("date: {}", converted_day);
println!("qen: {}", converted_qen);

// accessing individual element
println!("year: {}", qen.year());
println!("month: {}", qen.month());
println!("month(number): {}", qen.month() as u8);
println!("day: {}", qen.day());

// get the next, and previous date. `next` and `previous` consume `self`
let nege = qen.next();
println!("nege: {}", nege);
let tilant = nege.previous().previous();
println!("tilant: {}", tilant);

// get the next month
let qetay_wer = tilant.month().next();
println!("wer: {}", qetay_wer);

// get the previous month
let yalef_wer = tilant.month().previous();
println!("wer: {}", yalef_wer);

TODO

• Weekdays support
• Using an external crate to manage errors
• Use ordinal dates
• Duration
• Formatting
• Date Validators