/usr/lib/python2.7/dist-packages/logilab/common/date.py is in python-logilab-common 0.62.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 | # copyright 2003-2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of logilab-common.
#
# logilab-common is free software: you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option) any
# later version.
#
# logilab-common 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with logilab-common. If not, see <http://www.gnu.org/licenses/>.
"""Date manipulation helper functions."""
from __future__ import division
__docformat__ = "restructuredtext en"
import math
import re
import sys
from locale import getlocale, LC_TIME
from datetime import date, time, datetime, timedelta
from time import strptime as time_strptime
from calendar import monthrange, timegm
try:
from mx.DateTime import RelativeDateTime, Date, DateTimeType
except ImportError:
endOfMonth = None
DateTimeType = datetime
else:
endOfMonth = RelativeDateTime(months=1, day=-1)
# NOTE: should we implement a compatibility layer between date representations
# as we have in lgc.db ?
FRENCH_FIXED_HOLIDAYS = {
'jour_an': '%s-01-01',
'fete_travail': '%s-05-01',
'armistice1945': '%s-05-08',
'fete_nat': '%s-07-14',
'assomption': '%s-08-15',
'toussaint': '%s-11-01',
'armistice1918': '%s-11-11',
'noel': '%s-12-25',
}
FRENCH_MOBILE_HOLIDAYS = {
'paques2004': '2004-04-12',
'ascension2004': '2004-05-20',
'pentecote2004': '2004-05-31',
'paques2005': '2005-03-28',
'ascension2005': '2005-05-05',
'pentecote2005': '2005-05-16',
'paques2006': '2006-04-17',
'ascension2006': '2006-05-25',
'pentecote2006': '2006-06-05',
'paques2007': '2007-04-09',
'ascension2007': '2007-05-17',
'pentecote2007': '2007-05-28',
'paques2008': '2008-03-24',
'ascension2008': '2008-05-01',
'pentecote2008': '2008-05-12',
'paques2009': '2009-04-13',
'ascension2009': '2009-05-21',
'pentecote2009': '2009-06-01',
'paques2010': '2010-04-05',
'ascension2010': '2010-05-13',
'pentecote2010': '2010-05-24',
'paques2011': '2011-04-25',
'ascension2011': '2011-06-02',
'pentecote2011': '2011-06-13',
'paques2012': '2012-04-09',
'ascension2012': '2012-05-17',
'pentecote2012': '2012-05-28',
}
# XXX this implementation cries for multimethod dispatching
def get_step(dateobj, nbdays=1):
# assume date is either a python datetime or a mx.DateTime object
if isinstance(dateobj, date):
return ONEDAY * nbdays
return nbdays # mx.DateTime is ok with integers
def datefactory(year, month, day, sampledate):
# assume date is either a python datetime or a mx.DateTime object
if isinstance(sampledate, datetime):
return datetime(year, month, day)
if isinstance(sampledate, date):
return date(year, month, day)
return Date(year, month, day)
def weekday(dateobj):
# assume date is either a python datetime or a mx.DateTime object
if isinstance(dateobj, date):
return dateobj.weekday()
return dateobj.day_of_week
def str2date(datestr, sampledate):
# NOTE: datetime.strptime is not an option until we drop py2.4 compat
year, month, day = [int(chunk) for chunk in datestr.split('-')]
return datefactory(year, month, day, sampledate)
def days_between(start, end):
if isinstance(start, date):
delta = end - start
# datetime.timedelta.days is always an integer (floored)
if delta.seconds:
return delta.days + 1
return delta.days
else:
return int(math.ceil((end - start).days))
def get_national_holidays(begin, end):
"""return french national days off between begin and end"""
begin = datefactory(begin.year, begin.month, begin.day, begin)
end = datefactory(end.year, end.month, end.day, end)
holidays = [str2date(datestr, begin)
for datestr in FRENCH_MOBILE_HOLIDAYS.values()]
for year in xrange(begin.year, end.year+1):
for datestr in FRENCH_FIXED_HOLIDAYS.values():
date = str2date(datestr % year, begin)
if date not in holidays:
holidays.append(date)
return [day for day in holidays if begin <= day < end]
def add_days_worked(start, days):
"""adds date but try to only take days worked into account"""
step = get_step(start)
weeks, plus = divmod(days, 5)
end = start + ((weeks * 7) + plus) * step
if weekday(end) >= 5: # saturday or sunday
end += (2 * step)
end += len([x for x in get_national_holidays(start, end + step)
if weekday(x) < 5]) * step
if weekday(end) >= 5: # saturday or sunday
end += (2 * step)
return end
def nb_open_days(start, end):
assert start <= end
step = get_step(start)
days = days_between(start, end)
weeks, plus = divmod(days, 7)
if weekday(start) > weekday(end):
plus -= 2
elif weekday(end) == 6:
plus -= 1
open_days = weeks * 5 + plus
nb_week_holidays = len([x for x in get_national_holidays(start, end+step)
if weekday(x) < 5 and x < end])
open_days -= nb_week_holidays
if open_days < 0:
return 0
return open_days
def date_range(begin, end, incday=None, incmonth=None):
"""yields each date between begin and end
:param begin: the start date
:param end: the end date
:param incr: the step to use to iterate over dates. Default is
one day.
:param include: None (means no exclusion) or a function taking a
date as parameter, and returning True if the date
should be included.
When using mx datetime, you should *NOT* use incmonth argument, use instead
oneDay, oneHour, oneMinute, oneSecond, oneWeek or endOfMonth (to enumerate
months) as `incday` argument
"""
assert not (incday and incmonth)
begin = todate(begin)
end = todate(end)
if incmonth:
while begin < end:
yield begin
begin = next_month(begin, incmonth)
else:
incr = get_step(begin, incday or 1)
while begin < end:
yield begin
begin += incr
# makes py datetime usable #####################################################
ONEDAY = timedelta(days=1)
ONEWEEK = timedelta(days=7)
try:
strptime = datetime.strptime
except AttributeError: # py < 2.5
from time import strptime as time_strptime
def strptime(value, format):
return datetime(*time_strptime(value, format)[:6])
def strptime_time(value, format='%H:%M'):
return time(*time_strptime(value, format)[3:6])
def todate(somedate):
"""return a date from a date (leaving unchanged) or a datetime"""
if isinstance(somedate, datetime):
return date(somedate.year, somedate.month, somedate.day)
assert isinstance(somedate, (date, DateTimeType)), repr(somedate)
return somedate
def totime(somedate):
"""return a time from a time (leaving unchanged), date or datetime"""
# XXX mx compat
if not isinstance(somedate, time):
return time(somedate.hour, somedate.minute, somedate.second)
assert isinstance(somedate, (time)), repr(somedate)
return somedate
def todatetime(somedate):
"""return a date from a date (leaving unchanged) or a datetime"""
# take care, datetime is a subclass of date
if isinstance(somedate, datetime):
return somedate
assert isinstance(somedate, (date, DateTimeType)), repr(somedate)
return datetime(somedate.year, somedate.month, somedate.day)
def datetime2ticks(somedate):
return timegm(somedate.timetuple()) * 1000
def ticks2datetime(ticks):
miliseconds, microseconds = divmod(ticks, 1000)
try:
return datetime.fromtimestamp(miliseconds)
except (ValueError, OverflowError):
epoch = datetime.fromtimestamp(0)
nb_days, seconds = divmod(int(miliseconds), 86400)
delta = timedelta(nb_days, seconds=seconds, microseconds=microseconds)
try:
return epoch + delta
except (ValueError, OverflowError):
raise
def days_in_month(somedate):
return monthrange(somedate.year, somedate.month)[1]
def days_in_year(somedate):
feb = date(somedate.year, 2, 1)
if days_in_month(feb) == 29:
return 366
else:
return 365
def previous_month(somedate, nbmonth=1):
while nbmonth:
somedate = first_day(somedate) - ONEDAY
nbmonth -= 1
return somedate
def next_month(somedate, nbmonth=1):
while nbmonth:
somedate = last_day(somedate) + ONEDAY
nbmonth -= 1
return somedate
def first_day(somedate):
return date(somedate.year, somedate.month, 1)
def last_day(somedate):
return date(somedate.year, somedate.month, days_in_month(somedate))
def ustrftime(somedate, fmt='%Y-%m-%d'):
"""like strftime, but returns a unicode string instead of an encoded
string which may be problematic with localized date.
"""
if sys.version_info >= (3, 3):
# datetime.date.strftime() supports dates since year 1 in Python >=3.3.
return somedate.strftime(fmt)
else:
try:
if sys.version_info < (3, 0):
encoding = getlocale(LC_TIME)[1] or 'ascii'
return unicode(somedate.strftime(str(fmt)), encoding)
else:
return somedate.strftime(fmt)
except ValueError, exc:
if somedate.year >= 1900:
raise
# datetime is not happy with dates before 1900
# we try to work around this, assuming a simple
# format string
fields = {'Y': somedate.year,
'm': somedate.month,
'd': somedate.day,
}
if isinstance(somedate, datetime):
fields.update({'H': somedate.hour,
'M': somedate.minute,
'S': somedate.second})
fmt = re.sub('%([YmdHMS])', r'%(\1)02d', fmt)
return unicode(fmt) % fields
def utcdatetime(dt):
if dt.tzinfo is None:
return dt
return datetime(*dt.utctimetuple()[:7])
def utctime(dt):
if dt.tzinfo is None:
return dt
return (dt + dt.utcoffset() + dt.dst()).replace(tzinfo=None)
def datetime_to_seconds(date):
"""return the number of seconds since the begining of the day for that date
"""
return date.second+60*date.minute + 3600*date.hour
def timedelta_to_days(delta):
"""return the time delta as a number of seconds"""
return delta.days + delta.seconds / (3600*24)
def timedelta_to_seconds(delta):
"""return the time delta as a fraction of days"""
return delta.days*(3600*24) + delta.seconds
|