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64 lines
2.5 KiB
Python
64 lines
2.5 KiB
Python
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###
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# Copyright (c) 2022, Valentin Lorentz
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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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# * 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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# * Redistributions in binary form must reproduce the above copyright notice,
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# 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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# * Neither the name of the author of this software nor the name of
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# contributors to this software may be used to endorse or promote products
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# derived from this software without specific prior written consent.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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###
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import re
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import datetime
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# Credits for the regexp and function: https://stackoverflow.com/a/2765366/539465
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_XSD_DURATION_RE = re.compile(
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"(?P<sign>-?)P"
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"(?:(?P<years>\d+)Y)?"
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"(?:(?P<months>\d+)M)?"
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"(?:(?P<days>\d+)D)?"
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"(?:T(?:(?P<hours>\d+)H)?(?:(?P<minutes>\d+)M)?(?:(?P<seconds>\d+)S)?)?"
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)
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def parse_xsd_duration(s):
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"""Parses this format to a timedelta:
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https://www.w3.org/TR/xmlschema11-2/#duration"""
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# Fetch the match groups with default value of 0 (not None)
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duration = _XSD_DURATION_RE.match(s).groupdict(0)
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# Create the timedelta object from extracted groups
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delta = datetime.timedelta(
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days=int(duration["days"])
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+ (int(duration["months"]) * 30)
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+ (int(duration["years"]) * 365),
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hours=int(duration["hours"]),
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minutes=int(duration["minutes"]),
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seconds=int(duration["seconds"]),
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)
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if duration["sign"] == "-":
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delta *= -1
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return delta
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