forked from rc/aircox
99 lines
2.6 KiB
Python
Executable File
99 lines
2.6 KiB
Python
Executable File
import datetime
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import django.utils.timezone as tz
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__all__ = ['Redirect', 'redirect', 'date_range', 'cast_date',
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'date_or_default', 'to_timedelta', 'seconds_to_time']
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class Redirect(Exception):
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""" Redirect exception -- see `redirect()`. """
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def __init__(self, url):
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self.url = url
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def redirect(url):
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"""
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Raise a Redirect exception in order to response a redirection to client.
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AircoxMiddleware must be enabled. """
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raise Redirect(url)
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def str_to_date(value, sep='/'):
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"""
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Return a date from the provided `value` string, formated as "yyyy/mm/dd"
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(or "dd/mm/yyyy" if `reverse` is True).
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Raises ValueError for incorrect value format.
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"""
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value = value.split(sep)[:3]
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if len(value) < 3:
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return ValueError('incorrect date format')
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return datetime.date(int(value[0]), int(value[1]), int(value[2]))
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def date_range(date, delta=None, **delta_kwargs):
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"""
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Return a range of provided date such as `[date-delta, date+delta]`.
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:param date: the reference date
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:param delta: timedelta
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:param \**delta_kwargs: timedelta init arguments
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Return a datetime range for a given day, as:
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```(date, 0:0:0:0; date, 23:59:59:999)```.
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"""
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delta = tz.timedelta(**delta_kwargs) if delta is None else delta
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return [date - delta, date + delta]
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def cast_date(date, into=datetime.date):
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"""
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Cast a given date into the provided class' instance. Make datetime
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aware of timezone.
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"""
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date = into(date.year, date.month, date.day)
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return tz.make_aware(date) if issubclass(into, tz.datetime) else date
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def date_or_default(date, into=None):
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"""
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Return date if not None, otherwise return now. Cast result into provided
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type if any.
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"""
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date = date if date is not None else datetime.date.today() \
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if into is not None and issubclass(into, datetime.date) else tz.now()
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if into is not None:
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date = cast_date(date, into)
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if isinstance(date, tz.datetime) and not tz.is_aware(date):
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date = tz.make_aware(date)
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return date
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def to_timedelta(time):
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"""
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Transform a datetime or a time instance to a timedelta,
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only using time info
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"""
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return datetime.timedelta(
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hours=time.hour,
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minutes=time.minute,
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seconds=time.second
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)
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def to_seconds(time):
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""" Return total seconds for provided time """
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return 3600 * time.hour + 60 * time.minute + time.second
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def seconds_to_time(seconds):
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"""
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Seconds to datetime.time
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"""
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minutes, seconds = divmod(seconds, 60)
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hours, minutes = divmod(minutes, 60)
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return datetime.time(hour=hours, minute=minutes, second=seconds)
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