Permalink
Switch branches/tags
Nothing to show
Find file
Fetching contributors…
Cannot retrieve contributors at this time
104 lines (88 sloc) 4.33 KB
"""
A port of Django's django.utils.timesince to Flask-Babel
Ported by Ori Livneh
Copyright (c) Django Software Foundation and individual contributors.
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of Django nor the names of its contributors may be used
to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""
import datetime
from flaskext.babel import gettext, ngettext, to_user_timezone
def timesince(d, now=None):
"""
Takes two datetime objects and returns the time between d and now
as a nicely formatted string, e.g. "10 minutes". If d occurs after now,
then "0 minutes" is returned.
Units used are years, months, weeks, days, hours, and minutes.
Seconds and microseconds are ignored. Up to two adjacent units will be
displayed. For example, "2 weeks, 3 days" and "1 year, 3 months" are
possible outputs, but "2 weeks, 3 hours" and "1 year, 5 days" are not.
Adapted from http://blog.natbat.co.uk/archive/2003/Jun/14/time_since
"""
chunks = (
(60 * 60 * 24 * 365, lambda n: ngettext('year', 'years', n)),
(60 * 60 * 24 * 30, lambda n: ngettext('month', 'months', n)),
(60 * 60 * 24 * 7, lambda n: ngettext('week', 'weeks', n)),
(60 * 60 * 24, lambda n: ngettext('day', 'days', n)),
(60 * 60, lambda n: ngettext('hour', 'hours', n)),
(60, lambda n: ngettext('minute', 'minutes', n))
)
# Convert datetime.date to datetime.datetime for comparison.
if not isinstance(d, datetime.datetime):
d = datetime.datetime(d.year, d.month, d.day)
if now and not isinstance(now, datetime.datetime):
now = datetime.datetime(now.year, now.month, now.day)
if not now:
if d.tzinfo:
now = to_user_timezone(datetime.datetime.now())
else:
now = datetime.datetime.now()
# ignore microsecond part of 'd' since we removed it from 'now'
delta = now - (d - datetime.timedelta(0, 0, d.microsecond))
since = delta.days * 24 * 60 * 60 + delta.seconds
if since <= 0:
# d is in the future compared to now, stop processing.
return u'0 ' + gettext('minutes')
for i, (seconds, name) in enumerate(chunks):
count = since // seconds
if count != 0:
break
s = gettext('%(number)d %(type)s', number=count, type=name(count))
if i + 1 < len(chunks):
# Now get the second item
seconds2, name2 = chunks[i + 1]
count2 = (since - (seconds * count)) // seconds2
if count2 != 0:
s += gettext(', %(number)d %(type)s', number=count2,
type=name2(count2))
return s
def timeuntil(d, now=None):
"""
Like timesince, but returns a string measuring the time until
the given time.
"""
if not now:
if getattr(d, 'tzinfo', None):
now = to_user_timezone(datetime.datetime.now())
now = datetime.datetime.now(LocalTimezone(d))
else:
now = datetime.datetime.now()
return timesince(now, d)