44 lines
1.1 KiB
Python
44 lines
1.1 KiB
Python
|
# -*- coding: utf-8 -*-
|
||
|
|
|
||
|
|
# This file is part of convertdate.
|
||
|
|
# http://github.com/fitnr/convertdate
|
||
|
|
|
||
|
|
# Licensed under the MIT license:
|
||
|
|
# http://opensource.org/licenses/MIT
|
||
|
|
# Copyright (c) 2016, fitnr <fitnr@fakeisthenewreal>
|
||
|
|
from . import gregorian
|
||
|
|
from . import julianday
|
||
|
|
from . import julian
|
||
|
|
|
||
|
|
|
||
|
|
class DayCount(object):
|
||
|
|
|
||
|
|
'''A day count converter for the given epoch (in terms of Julian Day Count)'''
|
||
|
|
|
||
|
|
def __init__(self, epoch):
|
||
|
|
self.epoch = epoch
|
||
|
|
|
||
|
|
def to_gregorian(self, dc):
|
||
|
|
return gregorian.from_jd(self.to_jd(dc))
|
||
|
|
|
||
|
|
def from_gregorian(self, year, month, day):
|
||
|
|
return self.from_jd(gregorian.to_jd(year, month, day))
|
||
|
|
|
||
|
|
def to_jd(self, dc):
|
||
|
|
return dc + self.epoch
|
||
|
|
|
||
|
|
def from_jd(self, jdc):
|
||
|
|
return jdc - self.epoch
|
||
|
|
|
||
|
|
def from_julian(self, year, month, day):
|
||
|
|
return self.from_jd(julian.to_jd(year, month, day))
|
||
|
|
|
||
|
|
def to_julian(self, dc):
|
||
|
|
return julian.from_jd(self.to_jd(dc))
|
||
|
|
|
||
|
|
def to_datetime(self, dc):
|
||
|
|
return julianday.to_datetime(self.to_jd(dc))
|
||
|
|
|
||
|
|
def from_datetime(self, dt):
|
||
|
|
return self.from_jd(julianday.from_datetime(dt))
|