Struct zemen::Zemen

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pub struct Zemen { /* private fields */ }

Expand description

An Ethiopian Date.

Implementations

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impl Zemen

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pub fn year(&self) -> i32

Get the year.

let qen: Zemen = Zemen::from_eth_cal(2000, 1, 1).unwrap();
assert_eq!(qen.year(), 2000);

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pub fn month(&self) -> Month

Get the month.


let qen: Zemen = Zemen::from_eth_cal(2000, 1, 1).unwrap();
assert_eq!(qen.month(), Month::Meskerem);

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pub fn day(&self) -> u8

Get the day of the month.

let qen: Zemen = Zemen::from_eth_cal(2000, 1, 30).unwrap();
assert_eq!(qen.day(), 30);

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pub fn today() -> Self

returns the current date in Ethiopian date.


let today: time::Date = time::OffsetDateTime::now_utc().date();
let zare: Zemen = Zemen::today();

assert_eq!(today, zare.to_gre());

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pub fn from_gre_cal(year: i32, month: u8, day: u8) -> Result<Self, ComponentRange>

Takes a gregorian calendar, converts into Ethiopian calendar and returns a Zemen instance.


let date: Date = Date::from_calendar_date(2000, Month::January, 1).unwrap();
let qen: Zemen = Zemen::from_gre_cal(2000, 1, 1).unwrap();

assert_eq!(date, qen.to_gre());

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pub fn from_gre_date(gc_date: &Date) -> Self

Builds a new Zemen instance from a borrowed time::Date.


let date: Date = Date::from_calendar_date(2000, Month::January, 1).unwrap();
let qen: Zemen = Zemen::from_gre_date(&date);
assert_eq!(date, qen.to_gre());

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pub fn from_eth_cal(year: i32, month: u8, day: u8) -> Result<Self, ComponentRange>

Create an Ethiopian date from it’s number representations

let qen = Zemen::from_eth_cal(1992, 4, 22).unwrap();
 
assert_eq!(qen.year(), 1992);
assert_eq!(qen.month(), Month::Tahasass);
assert_eq!(qen.day(), 22);

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pub fn to_gre(&self) -> Date

Convertes the current Ethiopian date into time::Date.

let qen: Zemen = Zemen::from_eth_cal(1992, 4, 22).unwrap();
let date: Date = Date::from_calendar_date(2000, Month::January, 1).unwrap();

assert_eq!(date, qen.to_gre());

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pub fn from_jdn(jdn: i32) -> Result<Self, ComponentRange>

Create an Ethiopian date from Julian day number.


assert_eq!(Zemen::from_jdn(2_451_545), Zemen::from_eth_cal(1992, 4, 22));
assert_eq!(Zemen::from_jdn(2_458_485), Zemen::from_eth_cal(2011, 4, 23));
assert_eq!(Zemen::from_jdn(2_458_849), Zemen::from_eth_cal(2012, 4, 21));

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pub fn to_jdn(&self) -> i32

Get the Julian day number for the Ethiopian date.


assert_eq!(Zemen::from_eth_cal(1992, 4, 22).unwrap().to_jdn(), 2_451_545);
assert_eq!(Zemen::from_eth_cal(2011, 4, 23).unwrap().to_jdn(), 2_458_485);
assert_eq!(Zemen::from_eth_cal(2012, 4, 21).unwrap().to_jdn(), 2_458_849);