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77 lines
2.4 KiB
Python
77 lines
2.4 KiB
Python
# Copyright (c) 2001 Autonomous Zone Industries
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# Copyright (c) 2002-2007 Bryce "Zooko" Wilcox-O'Hearn
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# This file is licensed under the
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# GNU Lesser General Public License v2.1.
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# See the file COPYING or visit http://www.gnu.org/ for details.
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# ISO-8601:
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# http://www.cl.cam.ac.uk/~mgk25/iso-time.html
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import calendar, datetime, re, time
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def iso_utc_date(now=None, t=time.time):
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if now is None:
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now = t()
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return datetime.datetime.utcfromtimestamp(now).isoformat()[:10]
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def iso_utc(now=None, sep='_', t=time.time):
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if now is None:
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now = t()
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return datetime.datetime.utcfromtimestamp(now).isoformat(sep)
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def iso_local(now=None, sep='_', t=time.time):
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if now is None:
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now = t()
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return datetime.datetime.fromtimestamp(now).isoformat(sep)
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def iso_utc_time_to_seconds(isotime, _conversion_re=re.compile(r"(?P<year>\d{4})-(?P<month>\d{2})-(?P<day>\d{2})[T_ ](?P<hour>\d{2}):(?P<minute>\d{2}):(?P<second>\d{2})(?P<subsecond>\.\d+)?")):
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"""
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The inverse of iso_utc().
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Real ISO-8601 is "2003-01-08T06:30:59". We also accept the widely
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used variants "2003-01-08_06:30:59" and "2003-01-08 06:30:59".
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"""
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m = _conversion_re.match(isotime)
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if not m:
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raise ValueError, (isotime, "not a complete ISO8601 timestamp")
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year, month, day = int(m.group('year')), int(m.group('month')), int(m.group('day'))
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hour, minute, second = int(m.group('hour')), int(m.group('minute')), int(m.group('second'))
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subsecstr = m.group('subsecond')
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if subsecstr:
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subsecfloat = float(subsecstr)
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else:
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subsecfloat = 0
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return calendar.timegm( (year, month, day, hour, minute, second, 0, 1, 0) ) + subsecfloat
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def parse_duration(s):
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orig = s
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unit = None
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DAY = 24*60*60
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MONTH = 31*DAY
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YEAR = 365*DAY
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if s.endswith("s"):
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s = s[:-1]
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if s.endswith("day"):
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unit = DAY
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s = s[:-len("day")]
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elif s.endswith("month"):
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unit = MONTH
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s = s[:-len("month")]
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elif s.endswith("mo"):
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unit = MONTH
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s = s[:-len("mo")]
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elif s.endswith("year"):
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unit = YEAR
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s = s[:-len("YEAR")]
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else:
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raise ValueError("no unit (like day, month, or year) in '%s'" % orig)
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s = s.strip()
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return int(s) * unit
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def parse_date(s):
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# return seconds-since-epoch for the UTC midnight that starts the given
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# day
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return int(iso_utc_time_to_seconds(s + "T00:00:00"))
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