# HijriDate-rs

Convert between hijri and gregorian date.

The algorithm used to convert between dates is limited to:

``````minimum handled hijri year = 1356
maximum handled hijri year = 1500

minimum handled gregorian year = 1938
maximum handled gregorian year = 2076
``````

## Usage

convert to gregorian

```use hijri_date::HijriDate;

let hd = HijriDate::from_hijri(1439,11,19).unwrap();
assert_eq!((2018,8,1),(hd.year_gr,hd.month_gr,hd.day_gr));```

convert to hijri

```use hijri_date::HijriDate;

let hd = HijriDate::from_gr(2000,07,31).unwrap();
assert_eq!((1421,4,29),(hd.year,hd.month,hd.day));```

hijri day and month name

```use hijri_date::HijriDate;

let hd = HijriDate::from_hijri(1439,11,18).unwrap();
println!("{}",hd.format("%Y %M %D"));```

compare dates

```use hijri_date::HijriDate;

let hd_1 = HijriDate::from_hijri(1400, 12, 30);
let hd_2 = HijriDate::from_hijri(1357, 1, 1);
assert!(hd_1 > hd_2);```

substract duration from a day

```use hijri_date::{Duration,HijriDate};

let hd_1 = HijriDate::from_hijri(1420, 06, 15).unwrap();
let hd_2 = HijriDate::from_hijri(1420, 05, 29).unwrap();
assert_eq!(hd_1 - Duration::days(16), hd_2);```

substract a day from an other to get a duration

```use hijri_date::{Duration,HijriDate};

let hd_1 = HijriDate::from_hijri(1358, 06, 15).unwrap();
let hd_2 = HijriDate::from_hijri(1358, 06, 7).unwrap();
assert_eq!(hd_1-hd_2,Duration::days(8));```

## Structs

 Duration ISO 8601 time duration with nanosecond precision. This also allows for the negative duration; see individual methods for details. HijriDate Main structure.