53 lines
1.8 KiB
Python
53 lines
1.8 KiB
Python
import datetime, math, time
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from django.utils.tzinfo import LocalTimezone
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from django.utils.translation import ngettext
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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 then and now
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as a nicely formatted string, e.g "10 minutes"
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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: ngettext('year', 'years', n)),
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(60 * 60 * 24 * 30, lambda n: ngettext('month', 'months', n)),
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(60 * 60 * 24, lambda n : ngettext('day', 'days', n)),
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(60 * 60, lambda n: ngettext('hour', 'hours', n)),
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(60, lambda n: ngettext('minute', 'minutes', n))
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)
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if now:
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t = now.timetuple()
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else:
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t = time.localtime()
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if d.tzinfo:
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tz = LocalTimezone()
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else:
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tz = None
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now = datetime.datetime(t[0], t[1], t[2], t[3], t[4], t[5], tzinfo=tz)
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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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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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if count < 0:
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return '%d milliseconds' % math.floor((now - d).microseconds / 1000)
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s = '%d %s' % (count, 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 += ', %d %s' % (count2, name2(count2))
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return s
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def timeuntil(d):
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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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now = datetime.datetime.now()
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return timesince(now, d)
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