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[utils] Improve extract_timezone
Code taken from: https://github.com/ytdl-org/youtube-dl/pull/29845 Fixes: https://github.com/ytdl-org/youtube-dl/issues/29948 Authored by: dirkf
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@ -3034,8 +3034,16 @@ def redirect_request(self, req, fp, code, msg, headers, newurl):
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def extract_timezone(date_str):
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m = re.search(
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r'^.{8,}?(?P<tz>Z$| ?(?P<sign>\+|-)(?P<hours>[0-9]{2}):?(?P<minutes>[0-9]{2})$)',
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date_str)
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r'''(?x)
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^.{8,}? # >=8 char non-TZ prefix, if present
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(?P<tz>Z| # just the UTC Z, or
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(?:(?<=.\b\d{4}|\b\d{2}:\d\d)| # preceded by 4 digits or hh:mm or
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(?<!.\b[a-zA-Z]{3}|[a-zA-Z]{4}|..\b\d\d)) # not preceded by 3 alpha word or >= 4 alpha or 2 digits
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[ ]? # optional space
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(?P<sign>\+|-) # +/-
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(?P<hours>[0-9]{2}):?(?P<minutes>[0-9]{2}) # hh[:]mm
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$)
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''', date_str)
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if not m:
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timezone = datetime.timedelta()
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else:
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