copy pyutil.time_format into src/allmydata/util

time_format() provides a good format for logging timestamps
This commit is contained in:
Zooko O'Whielacronx 2007-08-14 09:33:49 -07:00
parent 0a6b2b5ff2
commit bdda08df8c

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# Copyright (c) 2001 Autonomous Zone Industries
# Copyright (c) 2002-2007 Bryce "Zooko" Wilcox-O'Hearn
# This file is licensed under the
# GNU Lesser General Public License v2.1.
# See the file COPYING or visit http://www.gnu.org/ for details.
# ISO-8601:
# http://www.cl.cam.ac.uk/~mgk25/iso-time.html
import datetime, re, time
def iso_utc(now=None, sep='_', t=time.time):
if now is None:
now = t()
return datetime.datetime.utcfromtimestamp(now).isoformat(sep)
def iso_utc_time_to_localseconds(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+)?")):
"""
The inverse of iso_utc().
Real ISO-8601 is "2003-01-08T06:30:59". We also accept the widely
used variants "2003-01-08_06:30:59" and "2003-01-08 06:30:59".
"""
m = _conversion_re.match(isotime)
if not m:
raise ValueError, (isotime, "not a complete ISO8601 timestamp")
year, month, day = int(m.group('year')), int(m.group('month')), int(m.group('day'))
hour, minute, second = int(m.group('hour')), int(m.group('minute')), int(m.group('second'))
utcseconds = time.mktime( (year, month, day, hour, minute, second, 0, 1, 0) )
localseconds = utcseconds - time.timezone
subsecstr = m.group('subsecond')
if subsecstr:
subsecfloat = float(subsecstr)
localseconds += subsecfloat
return localseconds