/usr/lib/python2.7/dist-packages/tryton/common/datetime_strftime.py is in tryton-client 3.4.0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | #This file is part of Tryton. The COPYRIGHT file at the top level of
#this repository contains the full copyright notices and license terms.
#Copyright (c) 2002-2007 John D. Hunter; All Rights Reserved
import time
def datetime_strftime(dt, fmt):
'''
Allow datetime strftime formatting for years before 1900.
See http://bugs.python.org/issue1777412
'''
if dt.year > 1900:
return dt.strftime(fmt)
def _findall(text, substr):
# Also finds overlaps
sites = []
i = 0
while True:
j = text.find(substr, i)
if j == -1:
break
sites.append(j)
i = j + 1
return sites
year = dt.year
# For every non-leap year century, advance by
# 6 years to get into the 28-year repeat cycle
delta = 2000 - year
off = 6 * (delta // 100 + delta // 400)
year = year + off
# Move to around the year 2000
year = year + ((2000 - year) // 28) * 28
timetuple = dt.timetuple()
s1 = time.strftime(fmt, (year,) + timetuple[1:])
sites1 = _findall(s1, str(year))
s2 = time.strftime(fmt, (year + 28,) + timetuple[1:])
sites2 = _findall(s2, str(year + 28))
sites = []
for site in sites1:
if site in sites2:
sites.append(site)
s = s1
syear = "%04d" % (dt.year,)
for site in sites:
s = s[:site] + syear + s[site + 4:]
return s
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