mirror of
https://github.com/zulip/zulip.git
synced 2025-11-04 05:53:43 +00:00
43 lines
1.3 KiB
Python
43 lines
1.3 KiB
Python
from __future__ import absolute_import
|
|
|
|
import datetime
|
|
import calendar
|
|
from django.utils.timezone import utc as timezone_utc
|
|
|
|
def floor_to_hour(dt):
|
|
# type: (datetime.datetime) -> datetime.datetime
|
|
return datetime.datetime(*dt.timetuple()[:4]) \
|
|
.replace(tzinfo=dt.tzinfo)
|
|
|
|
def floor_to_day(dt):
|
|
# type: (datetime.datetime) -> datetime.datetime
|
|
return datetime.datetime(*dt.timetuple()[:3]) \
|
|
.replace(tzinfo=dt.tzinfo)
|
|
|
|
def ceiling_to_hour(dt):
|
|
# type: (datetime.datetime) -> datetime.datetime
|
|
floor = floor_to_hour(dt)
|
|
if floor == dt:
|
|
return floor
|
|
return floor + datetime.timedelta(hours=1)
|
|
|
|
def ceiling_to_day(dt):
|
|
# type: (datetime.datetime) -> datetime.datetime
|
|
floor = floor_to_day(dt)
|
|
if floor == dt:
|
|
return floor
|
|
return floor + datetime.timedelta(days=1)
|
|
|
|
def timestamp_to_datetime(timestamp):
|
|
# type: (float) -> datetime.datetime
|
|
return datetime.datetime.fromtimestamp(float(timestamp), tz=timezone_utc)
|
|
|
|
class TimezoneNotUTCException(Exception):
|
|
pass
|
|
|
|
def datetime_to_timestamp(dt):
|
|
# type: (datetime.datetime) -> int
|
|
if dt.tzinfo is None or dt.tzinfo.utcoffset(dt) != timezone_utc.utcoffset(dt):
|
|
raise TimezoneNotUTCException("Datetime %s to be converted does not have a UTC timezone." % (dt,))
|
|
return calendar.timegm(dt.timetuple())
|