ویکی‌پدیا:درخواست‌های ربات/ربات بایگانی به روش انتقال/مبدل تاریخ
کتابخانه زیر به صورت استانداد توسط آقای بیاضی نگاشته شده است که کارش تبدیل تاریخ میلادی و شمسی به یکدیگر است این کد در ربات بایگانی استفاده شده‌است. <syntaxhighlight lang="python">
- coding: utf-8
- !/usr/bin/env python
- calverter.py
- Copyright (C) 2008-2010 Mehdi Bayazee (Bayazee@Gmail.com)
- Iranian (Jalali) calendar:
- http://en.wikipedia.org/wiki/Iranian_calendar
- Islamic (Hijri) calendar:
- http://en.wikipedia.org/wiki/Islamic_calendar
- Gregorian calendar:
- http://en.wikipedia.org/wiki/Gregorian_calendar
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
GREGORIAN_EPOCH = 1721425.5 GREGORIAN_WEEKDAYS = ("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday")
ISLAMIC_EPOCH = 1948439.5 ISLAMIC_WEEKDAYS = ("al-ahad", "al-'ithnayn", "ath-thalatha'", "al-arbia`aa'", "al-khamis", "al-jumu`a", "as-sabt")
JALALI_EPOCH = 1948320.5
- change main code
JALALI_WEEKDAYS = ("یکشنبه", "دوشنبه", "سه شنبه", "چهارشنبه", "پنجشنبه", "جمعه", "شنبه")
import math
class Calverter:
"""
Converter Main Class
"""
def __init__(self):
self.J0000 = 1721424.5 # Julian date of Gregorian epoch: 0000-01-01
self.J1970 = 2440587.5 # Julian date at Unix epoch: 1970-01-01
self.JMJD = 2400000.5 # Epoch of Modified Julian Date system
self.J1900 = 2415020.5 # Epoch (day 1) of Excel 1900 date system (PC)
self.J1904 = 2416480.5 # Epoch (day 0) of Excel 1904 date system (Mac)
self.norm_leap = ("Normal year", "Leap year")
def jwday(self, j):
"Calculate day of week from Julian day"
return int(math.floor((j + 1.5))) % 7
def weekday_before(self, weekday, jd):
"""
Return Julian date of given weekday (0 = Sunday)
in the seven days ending on jd.
"""
return jd - self.jwday(jd - weekday)
def search_weekday(self, weekday, jd, direction, offset):
"""
Determine the Julian date for:
@param weekday: Day of week desired, 0 = Sunday
@param jd: Julian date to begin search
@param direction: 1 = next weekday, -1 = last weekday
@param offset: Offset from jd to begin search
"""
return self.weekday_before(weekday, jd + (direction * offset))
# Utility weekday functions, just wrappers for search_weekday
def nearest_weekday(self, weekday, jd):
return self.search_weekday(weekday, jd, 1, 3)
def next_weekday(self, weekday, jd):
return self.search_weekday(weekday, jd, 1, 7)
def next_or_current_weekday(self, weekday, jd):
return self.search_weekday(weekday, jd, 1, 6)
def previous_weekday(self, weekday, jd):
return self.search_weekday(weekday, jd, -1, 1)
def previous_or_current_weekday(self, weekday, jd):
return self.search_weekday(weekday, jd, 1, 0)
def leap_gregorian(self, year):
"Is a given year in the Gregorian calendar a leap year ?"
return ((year % 4) == 0) and (not(((year % 100) == 0) and ((year % 400) != 0)))
def gregorian_to_jd(self, year, month, day):
"Determine Julian day number from Gregorian calendar date"
tm = 0 if month <= 2 else (-1 if self.leap_gregorian(year) else -2)
return (GREGORIAN_EPOCH - 1) + (365 * (year - 1)) + math.floor((year - 1) / 4) + (-math.floor((year - 1) / 100)) + \
math.floor((year - 1) / 400) + math.floor((((367 * month) - 362) / 12) + tm + day)
def jd_to_gregorian(self, jd) :
"Calculate Gregorian calendar date from Julian day"
wjd = math.floor(jd - 0.5) + 0.5
depoch = wjd - GREGORIAN_EPOCH
quadricent = math.floor(depoch / 146097)
dqc = depoch % 146097
cent = math.floor(dqc / 36524)
dcent = dqc % 36524
quad = math.floor(dcent / 1461)
dquad = dcent % 1461
yindex = math.floor(dquad / 365)
year = int((quadricent * 400) + (cent * 100) + (quad * 4) + yindex)
if not((cent == 4) or (yindex == 4)) :
year += 1
yearday = wjd - self.gregorian_to_jd(year, 1, 1)
leapadj = 0 if wjd < self.gregorian_to_jd(year, 3, 1) else (1 if self.leap_gregorian(year) else 2)
month = int(math.floor((((yearday + leapadj) * 12) + 373) / 367))
day = int(wjd - self.gregorian_to_jd(year, month, 1)) + 1
return year, month, day
def n_weeks(self, weekday, jd, nthweek):
j = 7 * nthweek
if nthweek > 0 :
j += self.previous_weekday(weekday, jd)
else :
j += self.next_weekday(weekday, jd)
return j
def iso_to_julian(self, year, week, day):
"Return Julian day of given ISO year, week, and day"
return day + self.n_weeks(0, self.gregorian_to_jd(year - 1, 12, 28), week)
def jd_to_iso(self, jd):
"Return array of ISO (year, week, day) for Julian day"
year = self.jd_to_gregorian(jd - 3)[0]
if jd >= self.iso_to_julian(year + 1, 1, 1) :
year += 1
week = int(math.floor((jd - self.iso_to_julian(year, 1, 1)) / 7) + 1)
day = self.jwday(jd)
if day == 0 :
day = 7
return year, week, day
def iso_day_to_julian(self, year, day):
"Return Julian day of given ISO year, and day of year"
return (day - 1) + self.gregorian_to_jd(year, 1, 1)
def jd_to_iso_day(self, jd):
"Return array of ISO (year, day_of_year) for Julian day"
year = self.jd_to_gregorian(jd)[0]
day = int(math.floor(jd - self.gregorian_to_jd(year, 1, 1))) + 1
return year, day
def pad(self, Str, howlong, padwith) :
"Pad a string to a given length with a given fill character. "
s = str(Str)
while s.length < howlong :
s = padwith + s
return s
def leap_islamic(self, year):
"Is a given year a leap year in the Islamic calendar ?"
return (((year * 11) + 14) % 30) < 11
def islamic_to_jd(self, year, month, day):
"Determine Julian day from Islamic date"
return (day + math.ceil(29.5 * (month - 1)) + (year - 1) * 354 + \
math.floor((3 + (11 * year)) / 30) + ISLAMIC_EPOCH) - 1
def jd_to_islamic(self, jd):
"Calculate Islamic date from Julian day"
jd = math.floor(jd) + 0.5
year = int(math.floor(((30 * (jd - ISLAMIC_EPOCH)) + 10646) / 10631))
month = int(min(12, math.ceil((jd - (29 + self.islamic_to_jd(year, 1, 1))) / 29.5) + 1))
day = int(jd - self.islamic_to_jd(year, month, 1)) + 1;
return year, month, day
def leap_jalali(self, year):
"Is a given year a leap year in the Jalali calendar ?"
return ((((((year - 474 if year > 0 else 473 ) % 2820) + 474) + 38) * 682) % 2816) < 682
def jalali_to_jd(self, year, month, day):
"Determine Julian day from Jalali date"
epbase = year - 474 if year>=0 else 473
epyear = 474 + (epbase % 2820)
if month <= 7 :
mm = (month - 1) * 31
else:
mm = ((month - 1) * 30) + 6
return day + mm + math.floor(((epyear * 682) - 110) / 2816) + (epyear - 1) * 365 + \
math.floor(epbase / 2820) * 1029983 + (JALALI_EPOCH - 1)
def jd_to_jalali(self, jd):
"Calculate Jalali date from Julian day"
jd = math.floor(jd) + 0.5
depoch = jd - self.jalali_to_jd(475, 1, 1)
cycle = math.floor(depoch / 1029983)
cyear = depoch % 1029983
if cyear == 1029982 :
ycycle = 2820
else :
aux1 = math.floor(cyear / 366)
aux2 = cyear % 366
ycycle = math.floor(((2134 * aux1) + (2816 * aux2) + 2815) / 1028522) + aux1 + 1
year = int(ycycle + (2820 * cycle) + 474)
if year <= 0 :
year -= 1
yday = (jd - self.jalali_to_jd(year, 1, 1)) + 1
if yday <= 186:
month = int(math.ceil(yday / 31))
else:
month = int(math.ceil((yday - 6) / 30))
day = int(jd - self.jalali_to_jd(year, month, 1)) + 1
return year, month, day
- add to main source
def gregorian_to_iranian(self, year, month, day):
cal = Calverter()
jd = cal.gregorian_to_jd(year, month, day)
wday = cal.jwday(jd)
tagh = str(cal.jd_to_jalali(jd))[1:-1] + ", " + JALALI_WEEKDAYS[wday]
l = tagh.split(", ")
return l