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#!/usr/bin/env python3
#
# Copyright (C) 2021 Intel Corporation
#
# SPDX-License-Identifier: MIT
#
import sys
from datetime import datetime, timezone
def convert_ww(epoch):
dt = datetime.fromtimestamp(epoch, timezone.utc)
# get some info from epoch
yr = int(dt.strftime("%y"))
doy = int(dt.strftime("%j"))
# and day of week for Jan 1st
dow1 = int(datetime(dt.year, 1, 1).strftime("%w"))
# number of days in a year
_is_leap = yr % 400 == 0 or (yr % 4 == 0 and yr % 100 != 0)
_y_days = 366 if _is_leap else 365
_doy = doy - 1 + dow1 # shift day of year to simulate Jan 1st as Sunday
_ww = int(_doy / 7) + 1 # get workweek
_wd = int(_doy % 7) # get days of week
_y_days = _y_days + dow1 # adjusted number of days in year
_w_days = _y_days - _doy + _wd # numer of week days days to end of year
if _w_days < 7:
# last week has less than 7 days
yr = yr + 1
_ww = 1
print("{:02d}.{:02d}".format(yr, _ww))
return 0
if __name__ == '__main__':
sys.exit(convert_ww(int(sys.argv[1])))
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