author | Sverre Rabbelier <srabbelier@gmail.com> |
Sun, 08 Mar 2009 16:26:17 +0000 | |
changeset 1751 | 17c7a7a48dc7 |
parent 323 | ff1a9aa48cfd |
permissions | -rw-r--r-- |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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import datetime |
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import time |
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|
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from django.utils.tzinfo import LocalTimezone |
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from django.utils.translation import ungettext, ugettext |
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|
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def timesince(d, now=None): |
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""" |
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Takes two datetime objects and returns the time between d and now |
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as a nicely formatted string, e.g. "10 minutes". If d occurs after now, |
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then "0 minutes" is returned. |
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Units used are years, months, weeks, days, hours, and minutes. |
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Seconds and microseconds are ignored. Up to two adjacent units will be |
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displayed. For example, "2 weeks, 3 days" and "1 year, 3 months" are |
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possible outputs, but "2 weeks, 3 hours" and "1 year, 5 days" are not. |
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|
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Adapted from http://blog.natbat.co.uk/archive/2003/Jun/14/time_since |
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""" |
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chunks = ( |
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(60 * 60 * 24 * 365, lambda n: ungettext('year', 'years', n)), |
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(60 * 60 * 24 * 30, lambda n: ungettext('month', 'months', n)), |
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(60 * 60 * 24 * 7, lambda n : ungettext('week', 'weeks', n)), |
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(60 * 60 * 24, lambda n : ungettext('day', 'days', n)), |
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(60 * 60, lambda n: ungettext('hour', 'hours', n)), |
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(60, lambda n: ungettext('minute', 'minutes', n)) |
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) |
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# Convert datetime.date to datetime.datetime for comparison |
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if d.__class__ is not datetime.datetime: |
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d = datetime.datetime(d.year, d.month, d.day) |
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if not now: |
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if d.tzinfo: |
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now = datetime.datetime.now(LocalTimezone(d)) |
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else: |
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now = datetime.datetime.now() |
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# ignore microsecond part of 'd' since we removed it from 'now' |
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delta = now - (d - datetime.timedelta(0, 0, d.microsecond)) |
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since = delta.days * 24 * 60 * 60 + delta.seconds |
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if since <= 0: |
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# d is in the future compared to now, stop processing. |
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return u'0 ' + ugettext('minutes') |
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for i, (seconds, name) in enumerate(chunks): |
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count = since // seconds |
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if count != 0: |
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break |
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s = ugettext('%(number)d %(type)s') % {'number': count, 'type': name(count)} |
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if i + 1 < len(chunks): |
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# Now get the second item |
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seconds2, name2 = chunks[i + 1] |
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count2 = (since - (seconds * count)) // seconds2 |
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if count2 != 0: |
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s += ugettext(', %(number)d %(type)s') % {'number': count2, 'type': name2(count2)} |
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return s |
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|
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def timeuntil(d, now=None): |
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""" |
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Like timesince, but returns a string measuring the time until |
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the given time. |
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""" |
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if not now: |
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if getattr(d, 'tzinfo', None): |
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now = datetime.datetime.now(LocalTimezone(d)) |
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else: |
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now = datetime.datetime.now() |
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return timesince(now, d) |