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Diffstat (limited to 'creactistore/_templates/lib/isodate/isoduration.py')
| -rw-r--r-- | creactistore/_templates/lib/isodate/isoduration.py | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/creactistore/_templates/lib/isodate/isoduration.py b/creactistore/_templates/lib/isodate/isoduration.py deleted file mode 100644 index 3554b1f..0000000 --- a/creactistore/_templates/lib/isodate/isoduration.py +++ /dev/null @@ -1,140 +0,0 @@ -############################################################################## -# Copyright 2009, Gerhard Weis -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are met: -# -# * Redistributions of source code must retain the above copyright notice, -# this list of conditions and the following disclaimer. -# * Redistributions in binary form must reproduce the above copyright notice, -# this list of conditions and the following disclaimer in the documentation -# and/or other materials provided with the distribution. -# * Neither the name of the authors nor the names of its contributors -# may be used to endorse or promote products derived from this software -# without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE -# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -# CONTRACT, STRICT LIABILITY, OR TORT -############################################################################## -''' -This module provides an ISO 8601:2004 duration parser. - -It also provides a wrapper to strftime. This wrapper makes it easier to -format timedelta or Duration instances as ISO conforming strings. -''' -from datetime import timedelta -import re - -from isodate.duration import Duration -from isodate.isoerror import ISO8601Error -from isodate.isodatetime import parse_datetime -from isodate.isostrf import strftime, D_DEFAULT - -ISO8601_PERIOD_REGEX = re.compile(r"^(?P<sign>[+-])?" - r"P(?P<years>[0-9]+([,.][0-9]+)?Y)?" - r"(?P<months>[0-9]+([,.][0-9]+)?M)?" - r"(?P<weeks>[0-9]+([,.][0-9]+)?W)?" - r"(?P<days>[0-9]+([,.][0-9]+)?D)?" - r"((?P<separator>T)(?P<hours>[0-9]+([,.][0-9]+)?H)?" - r"(?P<minutes>[0-9]+([,.][0-9]+)?M)?" - r"(?P<seconds>[0-9]+([,.][0-9]+)?S)?)?$") -# regular expression to parse ISO duartion strings. - - -def parse_duration(datestring): - """ - Parses an ISO 8601 durations into datetime.timedelta or Duration objects. - - If the ISO date string does not contain years or months, a timedelta - instance is returned, else a Duration instance is returned. - - The following duration formats are supported: - -PnnW duration in weeks - -PnnYnnMnnDTnnHnnMnnS complete duration specification - -PYYYYMMDDThhmmss basic alternative complete date format - -PYYYY-MM-DDThh:mm:ss extended alternative complete date format - -PYYYYDDDThhmmss basic alternative ordinal date format - -PYYYY-DDDThh:mm:ss extended alternative ordinal date format - - The '-' is optional. - - Limitations: ISO standard defines some restrictions about where to use - fractional numbers and which component and format combinations are - allowed. This parser implementation ignores all those restrictions and - returns something when it is able to find all necessary components. - In detail: - it does not check, whether only the last component has fractions. - it allows weeks specified with all other combinations - - The alternative format does not support durations with years, months or - days set to 0. - """ - if not isinstance(datestring, basestring): - raise TypeError("Expecting a string %r" % datestring) - match = ISO8601_PERIOD_REGEX.match(datestring) - if not match: - # try alternative format: - if datestring.startswith("P"): - durdt = parse_datetime(datestring[1:]) - if durdt.year != 0 or durdt.month != 0: - # create Duration - ret = Duration(days=durdt.day, seconds=durdt.second, - microseconds=durdt.microsecond, - minutes=durdt.minute, hours=durdt.hour, - months=durdt.month, years=durdt.year) - else: # FIXME: currently not possible in alternative format - # create timedelta - ret = timedelta(days=durdt.day, seconds=durdt.second, - microseconds=durdt.microsecond, - minutes=durdt.minute, hours=durdt.hour) - return ret - raise ISO8601Error("Unable to parse duration string %r" % datestring) - groups = match.groupdict() - for key, val in groups.items(): - if key not in ('separator', 'sign'): - if val is None: - groups[key] = "0n" - #print groups[key] - groups[key] = float(groups[key][:-1].replace(',', '.')) - if groups["years"] == 0 and groups["months"] == 0: - ret = timedelta(days=groups["days"], hours=groups["hours"], - minutes=groups["minutes"], seconds=groups["seconds"], - weeks=groups["weeks"]) - if groups["sign"] == '-': - ret = timedelta(0) - ret - else: - ret = Duration(years=groups["years"], months=groups["months"], - days=groups["days"], hours=groups["hours"], - minutes=groups["minutes"], seconds=groups["seconds"], - weeks=groups["weeks"]) - if groups["sign"] == '-': - ret = Duration(0) - ret - return ret - - -def duration_isoformat(tduration, format=D_DEFAULT): - ''' - Format duration strings. - - This method is just a wrapper around isodate.isostrf.strftime and uses - P%P (D_DEFAULT) as default format. - ''' - # TODO: implement better decision for negative Durations. - # should be done in Duration class in consistent way with timedelta. - if ((isinstance(tduration, Duration) and (tduration.years < 0 or - tduration.months < 0 or - tduration.tdelta < timedelta(0))) - or (isinstance(tduration, timedelta) and (tduration < timedelta(0)))): - ret = '-' - else: - ret = '' - ret += strftime(tduration, format) - return ret |