mirror of https://github.com/morpheus65535/bazarr
63 lines
2.1 KiB
Python
63 lines
2.1 KiB
Python
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# -*- coding: utf-8 -*-
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# Copyright (c) 2021, Brandon Nielsen
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# All rights reserved.
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#
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# This software may be modified and distributed under the terms
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# of the BSD license. See the LICENSE file for details.
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from aniso8601.builders.python import PythonTimeBuilder
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from aniso8601.compat import is_string
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from aniso8601.exceptions import ISOFormatError
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def parse_timezone(tzstr, builder=PythonTimeBuilder):
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# tzstr can be Z, ±hh:mm, ±hhmm, ±hh
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if is_string(tzstr) is False:
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raise ValueError("Time zone must be string.")
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if len(tzstr) == 1 and tzstr[0] == "Z":
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return builder.build_timezone(negative=False, Z=True, name=tzstr)
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elif len(tzstr) == 6:
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# ±hh:mm
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hourstr = tzstr[1:3]
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minutestr = tzstr[4:6]
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if tzstr[0] == "-" and hourstr == "00" and minutestr == "00":
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raise ISOFormatError("Negative ISO 8601 time offset must not " "be 0.")
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elif len(tzstr) == 5:
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# ±hhmm
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hourstr = tzstr[1:3]
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minutestr = tzstr[3:5]
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if tzstr[0] == "-" and hourstr == "00" and minutestr == "00":
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raise ISOFormatError("Negative ISO 8601 time offset must not " "be 0.")
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elif len(tzstr) == 3:
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# ±hh
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hourstr = tzstr[1:3]
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minutestr = None
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if tzstr[0] == "-" and hourstr == "00":
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raise ISOFormatError("Negative ISO 8601 time offset must not " "be 0.")
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else:
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raise ISOFormatError('"{0}" is not a valid ISO 8601 time offset.'.format(tzstr))
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for componentstr in [hourstr, minutestr]:
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if componentstr is not None:
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if componentstr.isdigit() is False:
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raise ISOFormatError(
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'"{0}" is not a valid ISO 8601 time offset.'.format(tzstr)
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)
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if tzstr[0] == "+":
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return builder.build_timezone(
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negative=False, hh=hourstr, mm=minutestr, name=tzstr
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)
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if tzstr[0] == "-":
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return builder.build_timezone(
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negative=True, hh=hourstr, mm=minutestr, name=tzstr
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)
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raise ISOFormatError('"{0}" is not a valid ISO 8601 time offset.'.format(tzstr))
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