shamsi_date 0.4.1

A Flutter package for using Jalali (Shamsi, Solar or Persian) date. You can convert Jalali and Georgian dates to each other.

A Flutter package for using Jalali (Shamsi, Solar or Persian) date. You can convert Jalali and Georgian dates to each other.

Converted from the popular Javascript library jalaali-js.

Calendar conversion is based on the algorithm provided by Kazimierz M. Borkowski and has a very good performance.

Usage

Add it to your pubspec.yaml file:

dependencies:
    shamsi_date: ^0.4.1

Jalali class is used for Shamsi (Jalali or Persian) date and Gregorian class is used for Gregorian date. They can be instantiated by using their constructor:

Jalali(year, month, day)
Gregorian(year, month, day)

month and day default to 1

You can convert Jalali date to Gregorian by using toGregorian() method and convert Gregorian to Jalali date by using toJalali() method.

You can check Jalali date validity by isValid() method. And find month length by monthLength getter. And check if the year is a leap year by isLeapYear() method.

You can also convert DateTime object directly to Jalali or Gregorian date by using:

Jalali.fromDateTime(dateTime)
Gregorian.fromDateTime(dateTime)

And convert Jalali and Gregorian to DateTime by using toDateTime() method. And you can get Jalali and Gregorian dates for now by using now() factory.

You can get weekDay of Jalali and Gregorian by using corresponding getters.

Here is an example:

import 'package:shamsi_date/shamsi_date.dart';

main() {
  // Gregorian to Jalali conversion
  final g1 = Gregorian(2013, 1, 10);
  final j1 = g1.toJalali();
  print('$g1 in Gregorian is $j1 in Jalali');
  // prints: 2013/1/10 in Gregorian is 1391/10/21 in Jalali

  // Jalali to Gregorian conversion
  final j2 = Jalali(1391, 10, 21);
  final g2 = j1.toGregorian();
  print('$j2 in Jalali is $g2  in Gregorian');
  // prints: 1391/10/21 in Jalali is 2013/1/10  in Gregorian

  // check validity
  print('$j1 is valid? ${j1.isValid()}');
  // -> true

  // check leap year
  print('1390 is leap year? ${Jalali(1390).isLeapYear()}');
  // -> false

  // find month length
  print('1390/12 month length? ${Jalali(1390, 12).monthLength}');
  // -> 29

  // convert DateTime object to Jalali and Gregorian
  final dateTime = DateTime.now();
  print('now is $dateTime');
  print('now is ${Gregorian.fromDateTime(dateTime)} in Gregorian');
  print('now is ${Jalali.fromDateTime(dateTime)} in Jalali');

  // convert Jalali and Gregorian to DateTime
  print('$j1 as DateTime is ${j1.toDateTime()}');
  print('$g1 as DateTime is ${g1.toDateTime()}');

  // now() factory method
  print('now is ${Gregorian.now()} in Gregorian');
  print('now is ${Jalali.now()} in Jalali');
  
  // find weekDay
  print('${j1}.weekDay = ${j1.weekDay}');
  print('${g1}.weekDay = ${g1.weekDay}');
}