103 lines
4.0 KiB
Python
103 lines
4.0 KiB
Python
# Copyright (c) Django Software Foundation and individual contributors.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# 3. Neither the name of Django nor the names of its contributors may be used
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# to endorse or promote products derived from this software without
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# specific prior written permission.
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#
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#THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"AND
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#ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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#WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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#DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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#ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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#(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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#LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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#ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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#(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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#SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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import datetime
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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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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, ('year', 'years')),
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(60 * 60 * 24 * 30, ('month', 'months')),
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(60 * 60 * 24 * 7, ('week', 'weeks')),
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(60 * 60 * 24, ('day', 'days')),
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(60 * 60, ('hour', 'hours')),
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(60, ('minute', 'minutes'))
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)
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# Convert int or float (unix epoch) to datetime.datetime for comparison
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if isinstance(d, int) or isinstance(d, float):
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d = datetime.datetime.fromtimestamp(d)
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# Convert datetime.date to datetime.datetime for comparison.
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if not isinstance(d, datetime.datetime):
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d = datetime.datetime(d.year, d.month, d.day)
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if now and not isinstance(now, datetime.datetime):
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now = datetime.datetime(now.year, now.month, now.day)
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if not now:
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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 ' + '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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if count == 1:
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s = '%(number)d %(type)s' % {'number': count, 'type': name[0]}
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else:
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s = '%(number)d %(type)s' % {'number': count, 'type': name[1]}
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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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if count2 == 1:
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s += ', %d %s' % (count2, name2[0])
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else:
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s += ', %d %s' % (count2, name2[1])
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return s
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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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now = datetime.datetime.now()
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return timesince(now, d)
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