adminandClaude Opus 5
79843aa2ae
Erster Stand der Hintergrundprozesse, die auf der Synology unter /volume1/homes/wagner/SolarManager laufen: der Manager selbst, die Sammler je Geraet, die MQTT-Bruecke, der Wecker und - neu hinzugezogen - der AutoAction-Runner, der als Hintergrundprozess hierher gehoert und nicht ins Web-Verzeichnis. Zugangsdaten stehen nicht mehr im Quelltext, sondern in config.ini, die nicht mit eingecheckt wird. Vorlage ist config.ini.example, gelesen wird sie von konfig.py. Betroffen waren solarManager.py (Datenbank und Wattpilot), zeit.py, gatherWaterData.py, wecker.py und skoda_testdaten.py, das sich das Passwort bisher aus dem Quelltext eines anderen Moduls herausgesucht hat. Die Kia-Anbindung ist mit dem Fahrzeug entfallen: kiaTest.py, gatherCarData.py und hyundai_kia_connect_api sind nicht mehr dabei, ebenso gatherInverterData.py, auf das nur noch eine auskommentierte Zeile zeigte. Die mitgelieferten Bibliotheken bleiben im Repository - die NAS hat kein pip, sie muessen neben den Skripten liegen. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
1614 lines
57 KiB
Python
1614 lines
57 KiB
Python
# -*- coding: utf-8 -*-
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"""
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This module offers a generic date/time string parser which is able to parse
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most known formats to represent a date and/or time.
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This module attempts to be forgiving with regards to unlikely input formats,
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returning a datetime object even for dates which are ambiguous. If an element
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of a date/time stamp is omitted, the following rules are applied:
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- If AM or PM is left unspecified, a 24-hour clock is assumed, however, an hour
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on a 12-hour clock (``0 <= hour <= 12``) *must* be specified if AM or PM is
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specified.
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- If a time zone is omitted, a timezone-naive datetime is returned.
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If any other elements are missing, they are taken from the
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:class:`datetime.datetime` object passed to the parameter ``default``. If this
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results in a day number exceeding the valid number of days per month, the
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value falls back to the end of the month.
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Additional resources about date/time string formats can be found below:
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- `A summary of the international standard date and time notation
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<https://www.cl.cam.ac.uk/~mgk25/iso-time.html>`_
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- `W3C Date and Time Formats <https://www.w3.org/TR/NOTE-datetime>`_
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- `Time Formats (Planetary Rings Node) <https://pds-rings.seti.org:443/tools/time_formats.html>`_
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- `CPAN ParseDate module
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<https://metacpan.org/pod/release/MUIR/Time-modules-2013.0912/lib/Time/ParseDate.pm>`_
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- `Java SimpleDateFormat Class
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<https://docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html>`_
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"""
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from __future__ import unicode_literals
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import datetime
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import re
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import string
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import time
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import warnings
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from calendar import monthrange
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from io import StringIO
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import six
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from six import integer_types, text_type
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from decimal import Decimal
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from warnings import warn
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from .. import relativedelta
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from .. import tz
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__all__ = ["parse", "parserinfo", "ParserError"]
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# TODO: pandas.core.tools.datetimes imports this explicitly. Might be worth
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# making public and/or figuring out if there is something we can
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# take off their plate.
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class _timelex(object):
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# Fractional seconds are sometimes split by a comma
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_split_decimal = re.compile("([.,])")
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def __init__(self, instream):
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if isinstance(instream, (bytes, bytearray)):
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instream = instream.decode()
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if isinstance(instream, text_type):
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instream = StringIO(instream)
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elif getattr(instream, 'read', None) is None:
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raise TypeError('Parser must be a string or character stream, not '
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'{itype}'.format(itype=instream.__class__.__name__))
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self.instream = instream
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self.charstack = []
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self.tokenstack = []
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self.eof = False
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def get_token(self):
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"""
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This function breaks the time string into lexical units (tokens), which
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can be parsed by the parser. Lexical units are demarcated by changes in
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the character set, so any continuous string of letters is considered
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one unit, any continuous string of numbers is considered one unit.
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The main complication arises from the fact that dots ('.') can be used
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both as separators (e.g. "Sep.20.2009") or decimal points (e.g.
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"4:30:21.447"). As such, it is necessary to read the full context of
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any dot-separated strings before breaking it into tokens; as such, this
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function maintains a "token stack", for when the ambiguous context
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demands that multiple tokens be parsed at once.
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"""
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if self.tokenstack:
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return self.tokenstack.pop(0)
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seenletters = False
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token = None
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state = None
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while not self.eof:
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# We only realize that we've reached the end of a token when we
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# find a character that's not part of the current token - since
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# that character may be part of the next token, it's stored in the
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# charstack.
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if self.charstack:
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nextchar = self.charstack.pop(0)
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else:
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nextchar = self.instream.read(1)
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while nextchar == '\x00':
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nextchar = self.instream.read(1)
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if not nextchar:
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self.eof = True
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break
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elif not state:
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# First character of the token - determines if we're starting
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# to parse a word, a number or something else.
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token = nextchar
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if self.isword(nextchar):
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state = 'a'
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elif self.isnum(nextchar):
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state = '0'
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elif self.isspace(nextchar):
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token = ' '
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break # emit token
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else:
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break # emit token
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elif state == 'a':
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# If we've already started reading a word, we keep reading
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# letters until we find something that's not part of a word.
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seenletters = True
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if self.isword(nextchar):
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token += nextchar
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elif nextchar == '.':
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token += nextchar
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state = 'a.'
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else:
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self.charstack.append(nextchar)
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break # emit token
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elif state == '0':
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# If we've already started reading a number, we keep reading
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# numbers until we find something that doesn't fit.
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if self.isnum(nextchar):
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token += nextchar
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elif nextchar == '.' or (nextchar == ',' and len(token) >= 2):
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token += nextchar
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state = '0.'
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else:
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self.charstack.append(nextchar)
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break # emit token
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elif state == 'a.':
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# If we've seen some letters and a dot separator, continue
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# parsing, and the tokens will be broken up later.
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seenletters = True
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if nextchar == '.' or self.isword(nextchar):
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token += nextchar
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elif self.isnum(nextchar) and token[-1] == '.':
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token += nextchar
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state = '0.'
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else:
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self.charstack.append(nextchar)
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break # emit token
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elif state == '0.':
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# If we've seen at least one dot separator, keep going, we'll
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# break up the tokens later.
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if nextchar == '.' or self.isnum(nextchar):
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token += nextchar
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elif self.isword(nextchar) and token[-1] == '.':
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token += nextchar
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state = 'a.'
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else:
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self.charstack.append(nextchar)
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break # emit token
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if (state in ('a.', '0.') and (seenletters or token.count('.') > 1 or
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token[-1] in '.,')):
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l = self._split_decimal.split(token)
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token = l[0]
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for tok in l[1:]:
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if tok:
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self.tokenstack.append(tok)
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if state == '0.' and token.count('.') == 0:
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token = token.replace(',', '.')
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return token
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def __iter__(self):
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return self
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def __next__(self):
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token = self.get_token()
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if token is None:
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raise StopIteration
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return token
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def next(self):
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return self.__next__() # Python 2.x support
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@classmethod
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def split(cls, s):
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return list(cls(s))
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@classmethod
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def isword(cls, nextchar):
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""" Whether or not the next character is part of a word """
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return nextchar.isalpha()
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@classmethod
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def isnum(cls, nextchar):
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""" Whether the next character is part of a number """
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return nextchar.isdigit()
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@classmethod
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def isspace(cls, nextchar):
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""" Whether the next character is whitespace """
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return nextchar.isspace()
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class _resultbase(object):
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def __init__(self):
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for attr in self.__slots__:
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setattr(self, attr, None)
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def _repr(self, classname):
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l = []
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for attr in self.__slots__:
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value = getattr(self, attr)
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if value is not None:
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l.append("%s=%s" % (attr, repr(value)))
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return "%s(%s)" % (classname, ", ".join(l))
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def __len__(self):
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return (sum(getattr(self, attr) is not None
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for attr in self.__slots__))
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def __repr__(self):
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return self._repr(self.__class__.__name__)
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class parserinfo(object):
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"""
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Class which handles what inputs are accepted. Subclass this to customize
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the language and acceptable values for each parameter.
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:param dayfirst:
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Whether to interpret the first value in an ambiguous 3-integer date
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(e.g. 01/05/09) as the day (``True``) or month (``False``). If
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``yearfirst`` is set to ``True``, this distinguishes between YDM
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and YMD. Default is ``False``.
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:param yearfirst:
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Whether to interpret the first value in an ambiguous 3-integer date
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(e.g. 01/05/09) as the year. If ``True``, the first number is taken
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to be the year, otherwise the last number is taken to be the year.
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Default is ``False``.
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"""
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# m from a.m/p.m, t from ISO T separator
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JUMP = [" ", ".", ",", ";", "-", "/", "'",
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"at", "on", "and", "ad", "m", "t", "of",
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"st", "nd", "rd", "th"]
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WEEKDAYS = [("Mon", "Monday"),
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("Tue", "Tuesday"), # TODO: "Tues"
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("Wed", "Wednesday"),
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("Thu", "Thursday"), # TODO: "Thurs"
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("Fri", "Friday"),
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("Sat", "Saturday"),
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("Sun", "Sunday")]
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MONTHS = [("Jan", "January"),
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("Feb", "February"), # TODO: "Febr"
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("Mar", "March"),
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("Apr", "April"),
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("May", "May"),
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("Jun", "June"),
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("Jul", "July"),
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("Aug", "August"),
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("Sep", "Sept", "September"),
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("Oct", "October"),
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("Nov", "November"),
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("Dec", "December")]
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HMS = [("h", "hour", "hours"),
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("m", "minute", "minutes"),
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("s", "second", "seconds")]
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AMPM = [("am", "a"),
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("pm", "p")]
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UTCZONE = ["UTC", "GMT", "Z", "z"]
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PERTAIN = ["of"]
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TZOFFSET = {}
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# TODO: ERA = ["AD", "BC", "CE", "BCE", "Stardate",
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# "Anno Domini", "Year of Our Lord"]
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def __init__(self, dayfirst=False, yearfirst=False):
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self._jump = self._convert(self.JUMP)
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self._weekdays = self._convert(self.WEEKDAYS)
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self._months = self._convert(self.MONTHS)
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self._hms = self._convert(self.HMS)
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self._ampm = self._convert(self.AMPM)
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self._utczone = self._convert(self.UTCZONE)
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self._pertain = self._convert(self.PERTAIN)
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self.dayfirst = dayfirst
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self.yearfirst = yearfirst
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self._year = time.localtime().tm_year
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self._century = self._year // 100 * 100
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def _convert(self, lst):
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dct = {}
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for i, v in enumerate(lst):
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if isinstance(v, tuple):
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for v in v:
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dct[v.lower()] = i
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else:
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dct[v.lower()] = i
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return dct
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def jump(self, name):
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return name.lower() in self._jump
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def weekday(self, name):
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try:
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return self._weekdays[name.lower()]
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except KeyError:
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pass
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return None
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def month(self, name):
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try:
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return self._months[name.lower()] + 1
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except KeyError:
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pass
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return None
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def hms(self, name):
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try:
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return self._hms[name.lower()]
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except KeyError:
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return None
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def ampm(self, name):
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try:
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return self._ampm[name.lower()]
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except KeyError:
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return None
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def pertain(self, name):
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return name.lower() in self._pertain
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def utczone(self, name):
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return name.lower() in self._utczone
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def tzoffset(self, name):
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if name in self._utczone:
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return 0
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return self.TZOFFSET.get(name)
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def convertyear(self, year, century_specified=False):
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"""
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Converts two-digit years to year within [-50, 49]
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range of self._year (current local time)
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"""
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# Function contract is that the year is always positive
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assert year >= 0
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if year < 100 and not century_specified:
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# assume current century to start
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year += self._century
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if year >= self._year + 50: # if too far in future
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year -= 100
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elif year < self._year - 50: # if too far in past
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year += 100
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return year
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def validate(self, res):
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# move to info
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if res.year is not None:
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res.year = self.convertyear(res.year, res.century_specified)
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if ((res.tzoffset == 0 and not res.tzname) or
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(res.tzname == 'Z' or res.tzname == 'z')):
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res.tzname = "UTC"
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res.tzoffset = 0
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elif res.tzoffset != 0 and res.tzname and self.utczone(res.tzname):
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res.tzoffset = 0
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return True
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class _ymd(list):
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def __init__(self, *args, **kwargs):
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super(self.__class__, self).__init__(*args, **kwargs)
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self.century_specified = False
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self.dstridx = None
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self.mstridx = None
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self.ystridx = None
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@property
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def has_year(self):
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return self.ystridx is not None
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@property
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def has_month(self):
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return self.mstridx is not None
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@property
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def has_day(self):
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return self.dstridx is not None
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def could_be_day(self, value):
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if self.has_day:
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return False
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elif not self.has_month:
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return 1 <= value <= 31
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elif not self.has_year:
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# Be permissive, assume leap year
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month = self[self.mstridx]
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return 1 <= value <= monthrange(2000, month)[1]
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else:
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month = self[self.mstridx]
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year = self[self.ystridx]
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return 1 <= value <= monthrange(year, month)[1]
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def append(self, val, label=None):
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if hasattr(val, '__len__'):
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if val.isdigit() and len(val) > 2:
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self.century_specified = True
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if label not in [None, 'Y']: # pragma: no cover
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raise ValueError(label)
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label = 'Y'
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elif val > 100:
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self.century_specified = True
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if label not in [None, 'Y']: # pragma: no cover
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raise ValueError(label)
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label = 'Y'
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super(self.__class__, self).append(int(val))
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if label == 'M':
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if self.has_month:
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raise ValueError('Month is already set')
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self.mstridx = len(self) - 1
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elif label == 'D':
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if self.has_day:
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raise ValueError('Day is already set')
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self.dstridx = len(self) - 1
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elif label == 'Y':
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if self.has_year:
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raise ValueError('Year is already set')
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self.ystridx = len(self) - 1
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def _resolve_from_stridxs(self, strids):
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"""
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Try to resolve the identities of year/month/day elements using
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ystridx, mstridx, and dstridx, if enough of these are specified.
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"""
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if len(self) == 3 and len(strids) == 2:
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# we can back out the remaining stridx value
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missing = [x for x in range(3) if x not in strids.values()]
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key = [x for x in ['y', 'm', 'd'] if x not in strids]
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assert len(missing) == len(key) == 1
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key = key[0]
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val = missing[0]
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strids[key] = val
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assert len(self) == len(strids) # otherwise this should not be called
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out = {key: self[strids[key]] for key in strids}
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return (out.get('y'), out.get('m'), out.get('d'))
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def resolve_ymd(self, yearfirst, dayfirst):
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len_ymd = len(self)
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year, month, day = (None, None, None)
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strids = (('y', self.ystridx),
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('m', self.mstridx),
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('d', self.dstridx))
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strids = {key: val for key, val in strids if val is not None}
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if (len(self) == len(strids) > 0 or
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(len(self) == 3 and len(strids) == 2)):
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return self._resolve_from_stridxs(strids)
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mstridx = self.mstridx
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if len_ymd > 3:
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raise ValueError("More than three YMD values")
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elif len_ymd == 1 or (mstridx is not None and len_ymd == 2):
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# One member, or two members with a month string
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if mstridx is not None:
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month = self[mstridx]
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# since mstridx is 0 or 1, self[mstridx-1] always
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# looks up the other element
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other = self[mstridx - 1]
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else:
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other = self[0]
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if len_ymd > 1 or mstridx is None:
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if other > 31:
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year = other
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else:
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day = other
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elif len_ymd == 2:
|
|
# Two members with numbers
|
|
if self[0] > 31:
|
|
# 99-01
|
|
year, month = self
|
|
elif self[1] > 31:
|
|
# 01-99
|
|
month, year = self
|
|
elif dayfirst and self[1] <= 12:
|
|
# 13-01
|
|
day, month = self
|
|
else:
|
|
# 01-13
|
|
month, day = self
|
|
|
|
elif len_ymd == 3:
|
|
# Three members
|
|
if mstridx == 0:
|
|
if self[1] > 31:
|
|
# Apr-2003-25
|
|
month, year, day = self
|
|
else:
|
|
month, day, year = self
|
|
elif mstridx == 1:
|
|
if self[0] > 31 or (yearfirst and self[2] <= 31):
|
|
# 99-Jan-01
|
|
year, month, day = self
|
|
else:
|
|
# 01-Jan-01
|
|
# Give precedence to day-first, since
|
|
# two-digit years is usually hand-written.
|
|
day, month, year = self
|
|
|
|
elif mstridx == 2:
|
|
# WTF!?
|
|
if self[1] > 31:
|
|
# 01-99-Jan
|
|
day, year, month = self
|
|
else:
|
|
# 99-01-Jan
|
|
year, day, month = self
|
|
|
|
else:
|
|
if (self[0] > 31 or
|
|
self.ystridx == 0 or
|
|
(yearfirst and self[1] <= 12 and self[2] <= 31)):
|
|
# 99-01-01
|
|
if dayfirst and self[2] <= 12:
|
|
year, day, month = self
|
|
else:
|
|
year, month, day = self
|
|
elif self[0] > 12 or (dayfirst and self[1] <= 12):
|
|
# 13-01-01
|
|
day, month, year = self
|
|
else:
|
|
# 01-13-01
|
|
month, day, year = self
|
|
|
|
return year, month, day
|
|
|
|
|
|
class parser(object):
|
|
def __init__(self, info=None):
|
|
self.info = info or parserinfo()
|
|
|
|
def parse(self, timestr, default=None,
|
|
ignoretz=False, tzinfos=None, **kwargs):
|
|
"""
|
|
Parse the date/time string into a :class:`datetime.datetime` object.
|
|
|
|
:param timestr:
|
|
Any date/time string using the supported formats.
|
|
|
|
:param default:
|
|
The default datetime object, if this is a datetime object and not
|
|
``None``, elements specified in ``timestr`` replace elements in the
|
|
default object.
|
|
|
|
:param ignoretz:
|
|
If set ``True``, time zones in parsed strings are ignored and a
|
|
naive :class:`datetime.datetime` object is returned.
|
|
|
|
:param tzinfos:
|
|
Additional time zone names / aliases which may be present in the
|
|
string. This argument maps time zone names (and optionally offsets
|
|
from those time zones) to time zones. This parameter can be a
|
|
dictionary with timezone aliases mapping time zone names to time
|
|
zones or a function taking two parameters (``tzname`` and
|
|
``tzoffset``) and returning a time zone.
|
|
|
|
The timezones to which the names are mapped can be an integer
|
|
offset from UTC in seconds or a :class:`tzinfo` object.
|
|
|
|
.. doctest::
|
|
:options: +NORMALIZE_WHITESPACE
|
|
|
|
>>> from dateutil.parser import parse
|
|
>>> from dateutil.tz import gettz
|
|
>>> tzinfos = {"BRST": -7200, "CST": gettz("America/Chicago")}
|
|
>>> parse("2012-01-19 17:21:00 BRST", tzinfos=tzinfos)
|
|
datetime.datetime(2012, 1, 19, 17, 21, tzinfo=tzoffset(u'BRST', -7200))
|
|
>>> parse("2012-01-19 17:21:00 CST", tzinfos=tzinfos)
|
|
datetime.datetime(2012, 1, 19, 17, 21,
|
|
tzinfo=tzfile('/usr/share/zoneinfo/America/Chicago'))
|
|
|
|
This parameter is ignored if ``ignoretz`` is set.
|
|
|
|
:param \\*\\*kwargs:
|
|
Keyword arguments as passed to ``_parse()``.
|
|
|
|
:return:
|
|
Returns a :class:`datetime.datetime` object or, if the
|
|
``fuzzy_with_tokens`` option is ``True``, returns a tuple, the
|
|
first element being a :class:`datetime.datetime` object, the second
|
|
a tuple containing the fuzzy tokens.
|
|
|
|
:raises ParserError:
|
|
Raised for invalid or unknown string format, if the provided
|
|
:class:`tzinfo` is not in a valid format, or if an invalid date
|
|
would be created.
|
|
|
|
:raises TypeError:
|
|
Raised for non-string or character stream input.
|
|
|
|
:raises OverflowError:
|
|
Raised if the parsed date exceeds the largest valid C integer on
|
|
your system.
|
|
"""
|
|
|
|
if default is None:
|
|
default = datetime.datetime.now().replace(hour=0, minute=0,
|
|
second=0, microsecond=0)
|
|
|
|
res, skipped_tokens = self._parse(timestr, **kwargs)
|
|
|
|
if res is None:
|
|
raise ParserError("Unknown string format: %s", timestr)
|
|
|
|
if len(res) == 0:
|
|
raise ParserError("String does not contain a date: %s", timestr)
|
|
|
|
try:
|
|
ret = self._build_naive(res, default)
|
|
except ValueError as e:
|
|
six.raise_from(ParserError(str(e) + ": %s", timestr), e)
|
|
|
|
if not ignoretz:
|
|
ret = self._build_tzaware(ret, res, tzinfos)
|
|
|
|
if kwargs.get('fuzzy_with_tokens', False):
|
|
return ret, skipped_tokens
|
|
else:
|
|
return ret
|
|
|
|
class _result(_resultbase):
|
|
__slots__ = ["year", "month", "day", "weekday",
|
|
"hour", "minute", "second", "microsecond",
|
|
"tzname", "tzoffset", "ampm","any_unused_tokens"]
|
|
|
|
def _parse(self, timestr, dayfirst=None, yearfirst=None, fuzzy=False,
|
|
fuzzy_with_tokens=False):
|
|
"""
|
|
Private method which performs the heavy lifting of parsing, called from
|
|
``parse()``, which passes on its ``kwargs`` to this function.
|
|
|
|
:param timestr:
|
|
The string to parse.
|
|
|
|
:param dayfirst:
|
|
Whether to interpret the first value in an ambiguous 3-integer date
|
|
(e.g. 01/05/09) as the day (``True``) or month (``False``). If
|
|
``yearfirst`` is set to ``True``, this distinguishes between YDM
|
|
and YMD. If set to ``None``, this value is retrieved from the
|
|
current :class:`parserinfo` object (which itself defaults to
|
|
``False``).
|
|
|
|
:param yearfirst:
|
|
Whether to interpret the first value in an ambiguous 3-integer date
|
|
(e.g. 01/05/09) as the year. If ``True``, the first number is taken
|
|
to be the year, otherwise the last number is taken to be the year.
|
|
If this is set to ``None``, the value is retrieved from the current
|
|
:class:`parserinfo` object (which itself defaults to ``False``).
|
|
|
|
:param fuzzy:
|
|
Whether to allow fuzzy parsing, allowing for string like "Today is
|
|
January 1, 2047 at 8:21:00AM".
|
|
|
|
:param fuzzy_with_tokens:
|
|
If ``True``, ``fuzzy`` is automatically set to True, and the parser
|
|
will return a tuple where the first element is the parsed
|
|
:class:`datetime.datetime` datetimestamp and the second element is
|
|
a tuple containing the portions of the string which were ignored:
|
|
|
|
.. doctest::
|
|
|
|
>>> from dateutil.parser import parse
|
|
>>> parse("Today is January 1, 2047 at 8:21:00AM", fuzzy_with_tokens=True)
|
|
(datetime.datetime(2047, 1, 1, 8, 21), (u'Today is ', u' ', u'at '))
|
|
|
|
"""
|
|
if fuzzy_with_tokens:
|
|
fuzzy = True
|
|
|
|
info = self.info
|
|
|
|
if dayfirst is None:
|
|
dayfirst = info.dayfirst
|
|
|
|
if yearfirst is None:
|
|
yearfirst = info.yearfirst
|
|
|
|
res = self._result()
|
|
l = _timelex.split(timestr) # Splits the timestr into tokens
|
|
|
|
skipped_idxs = []
|
|
|
|
# year/month/day list
|
|
ymd = _ymd()
|
|
|
|
len_l = len(l)
|
|
i = 0
|
|
try:
|
|
while i < len_l:
|
|
|
|
# Check if it's a number
|
|
value_repr = l[i]
|
|
try:
|
|
value = float(value_repr)
|
|
except ValueError:
|
|
value = None
|
|
|
|
if value is not None:
|
|
# Numeric token
|
|
i = self._parse_numeric_token(l, i, info, ymd, res, fuzzy)
|
|
|
|
# Check weekday
|
|
elif info.weekday(l[i]) is not None:
|
|
value = info.weekday(l[i])
|
|
res.weekday = value
|
|
|
|
# Check month name
|
|
elif info.month(l[i]) is not None:
|
|
value = info.month(l[i])
|
|
ymd.append(value, 'M')
|
|
|
|
if i + 1 < len_l:
|
|
if l[i + 1] in ('-', '/'):
|
|
# Jan-01[-99]
|
|
sep = l[i + 1]
|
|
ymd.append(l[i + 2])
|
|
|
|
if i + 3 < len_l and l[i + 3] == sep:
|
|
# Jan-01-99
|
|
ymd.append(l[i + 4])
|
|
i += 2
|
|
|
|
i += 2
|
|
|
|
elif (i + 4 < len_l and l[i + 1] == l[i + 3] == ' ' and
|
|
info.pertain(l[i + 2])):
|
|
# Jan of 01
|
|
# In this case, 01 is clearly year
|
|
if l[i + 4].isdigit():
|
|
# Convert it here to become unambiguous
|
|
value = int(l[i + 4])
|
|
year = str(info.convertyear(value))
|
|
ymd.append(year, 'Y')
|
|
else:
|
|
# Wrong guess
|
|
pass
|
|
# TODO: not hit in tests
|
|
i += 4
|
|
|
|
# Check am/pm
|
|
elif info.ampm(l[i]) is not None:
|
|
value = info.ampm(l[i])
|
|
val_is_ampm = self._ampm_valid(res.hour, res.ampm, fuzzy)
|
|
|
|
if val_is_ampm:
|
|
res.hour = self._adjust_ampm(res.hour, value)
|
|
res.ampm = value
|
|
|
|
elif fuzzy:
|
|
skipped_idxs.append(i)
|
|
|
|
# Check for a timezone name
|
|
elif self._could_be_tzname(res.hour, res.tzname, res.tzoffset, l[i]):
|
|
res.tzname = l[i]
|
|
res.tzoffset = info.tzoffset(res.tzname)
|
|
|
|
# Check for something like GMT+3, or BRST+3. Notice
|
|
# that it doesn't mean "I am 3 hours after GMT", but
|
|
# "my time +3 is GMT". If found, we reverse the
|
|
# logic so that timezone parsing code will get it
|
|
# right.
|
|
if i + 1 < len_l and l[i + 1] in ('+', '-'):
|
|
l[i + 1] = ('+', '-')[l[i + 1] == '+']
|
|
res.tzoffset = None
|
|
if info.utczone(res.tzname):
|
|
# With something like GMT+3, the timezone
|
|
# is *not* GMT.
|
|
res.tzname = None
|
|
|
|
# Check for a numbered timezone
|
|
elif res.hour is not None and l[i] in ('+', '-'):
|
|
signal = (-1, 1)[l[i] == '+']
|
|
len_li = len(l[i + 1])
|
|
|
|
# TODO: check that l[i + 1] is integer?
|
|
if len_li == 4:
|
|
# -0300
|
|
hour_offset = int(l[i + 1][:2])
|
|
min_offset = int(l[i + 1][2:])
|
|
elif i + 2 < len_l and l[i + 2] == ':':
|
|
# -03:00
|
|
hour_offset = int(l[i + 1])
|
|
min_offset = int(l[i + 3]) # TODO: Check that l[i+3] is minute-like?
|
|
i += 2
|
|
elif len_li <= 2:
|
|
# -[0]3
|
|
hour_offset = int(l[i + 1][:2])
|
|
min_offset = 0
|
|
else:
|
|
raise ValueError(timestr)
|
|
|
|
res.tzoffset = signal * (hour_offset * 3600 + min_offset * 60)
|
|
|
|
# Look for a timezone name between parenthesis
|
|
if (i + 5 < len_l and
|
|
info.jump(l[i + 2]) and l[i + 3] == '(' and
|
|
l[i + 5] == ')' and
|
|
3 <= len(l[i + 4]) and
|
|
self._could_be_tzname(res.hour, res.tzname,
|
|
None, l[i + 4])):
|
|
# -0300 (BRST)
|
|
res.tzname = l[i + 4]
|
|
i += 4
|
|
|
|
i += 1
|
|
|
|
# Check jumps
|
|
elif not (info.jump(l[i]) or fuzzy):
|
|
raise ValueError(timestr)
|
|
|
|
else:
|
|
skipped_idxs.append(i)
|
|
i += 1
|
|
|
|
# Process year/month/day
|
|
year, month, day = ymd.resolve_ymd(yearfirst, dayfirst)
|
|
|
|
res.century_specified = ymd.century_specified
|
|
res.year = year
|
|
res.month = month
|
|
res.day = day
|
|
|
|
except (IndexError, ValueError):
|
|
return None, None
|
|
|
|
if not info.validate(res):
|
|
return None, None
|
|
|
|
if fuzzy_with_tokens:
|
|
skipped_tokens = self._recombine_skipped(l, skipped_idxs)
|
|
return res, tuple(skipped_tokens)
|
|
else:
|
|
return res, None
|
|
|
|
def _parse_numeric_token(self, tokens, idx, info, ymd, res, fuzzy):
|
|
# Token is a number
|
|
value_repr = tokens[idx]
|
|
try:
|
|
value = self._to_decimal(value_repr)
|
|
except Exception as e:
|
|
six.raise_from(ValueError('Unknown numeric token'), e)
|
|
|
|
len_li = len(value_repr)
|
|
|
|
len_l = len(tokens)
|
|
|
|
if (len(ymd) == 3 and len_li in (2, 4) and
|
|
res.hour is None and
|
|
(idx + 1 >= len_l or
|
|
(tokens[idx + 1] != ':' and
|
|
info.hms(tokens[idx + 1]) is None))):
|
|
# 19990101T23[59]
|
|
s = tokens[idx]
|
|
res.hour = int(s[:2])
|
|
|
|
if len_li == 4:
|
|
res.minute = int(s[2:])
|
|
|
|
elif len_li == 6 or (len_li > 6 and tokens[idx].find('.') == 6):
|
|
# YYMMDD or HHMMSS[.ss]
|
|
s = tokens[idx]
|
|
|
|
if not ymd and '.' not in tokens[idx]:
|
|
ymd.append(s[:2])
|
|
ymd.append(s[2:4])
|
|
ymd.append(s[4:])
|
|
else:
|
|
# 19990101T235959[.59]
|
|
|
|
# TODO: Check if res attributes already set.
|
|
res.hour = int(s[:2])
|
|
res.minute = int(s[2:4])
|
|
res.second, res.microsecond = self._parsems(s[4:])
|
|
|
|
elif len_li in (8, 12, 14):
|
|
# YYYYMMDD
|
|
s = tokens[idx]
|
|
ymd.append(s[:4], 'Y')
|
|
ymd.append(s[4:6])
|
|
ymd.append(s[6:8])
|
|
|
|
if len_li > 8:
|
|
res.hour = int(s[8:10])
|
|
res.minute = int(s[10:12])
|
|
|
|
if len_li > 12:
|
|
res.second = int(s[12:])
|
|
|
|
elif self._find_hms_idx(idx, tokens, info, allow_jump=True) is not None:
|
|
# HH[ ]h or MM[ ]m or SS[.ss][ ]s
|
|
hms_idx = self._find_hms_idx(idx, tokens, info, allow_jump=True)
|
|
(idx, hms) = self._parse_hms(idx, tokens, info, hms_idx)
|
|
if hms is not None:
|
|
# TODO: checking that hour/minute/second are not
|
|
# already set?
|
|
self._assign_hms(res, value_repr, hms)
|
|
|
|
elif idx + 2 < len_l and tokens[idx + 1] == ':':
|
|
# HH:MM[:SS[.ss]]
|
|
res.hour = int(value)
|
|
value = self._to_decimal(tokens[idx + 2]) # TODO: try/except for this?
|
|
(res.minute, res.second) = self._parse_min_sec(value)
|
|
|
|
if idx + 4 < len_l and tokens[idx + 3] == ':':
|
|
res.second, res.microsecond = self._parsems(tokens[idx + 4])
|
|
|
|
idx += 2
|
|
|
|
idx += 2
|
|
|
|
elif idx + 1 < len_l and tokens[idx + 1] in ('-', '/', '.'):
|
|
sep = tokens[idx + 1]
|
|
ymd.append(value_repr)
|
|
|
|
if idx + 2 < len_l and not info.jump(tokens[idx + 2]):
|
|
if tokens[idx + 2].isdigit():
|
|
# 01-01[-01]
|
|
ymd.append(tokens[idx + 2])
|
|
else:
|
|
# 01-Jan[-01]
|
|
value = info.month(tokens[idx + 2])
|
|
|
|
if value is not None:
|
|
ymd.append(value, 'M')
|
|
else:
|
|
raise ValueError()
|
|
|
|
if idx + 3 < len_l and tokens[idx + 3] == sep:
|
|
# We have three members
|
|
value = info.month(tokens[idx + 4])
|
|
|
|
if value is not None:
|
|
ymd.append(value, 'M')
|
|
else:
|
|
ymd.append(tokens[idx + 4])
|
|
idx += 2
|
|
|
|
idx += 1
|
|
idx += 1
|
|
|
|
elif idx + 1 >= len_l or info.jump(tokens[idx + 1]):
|
|
if idx + 2 < len_l and info.ampm(tokens[idx + 2]) is not None:
|
|
# 12 am
|
|
hour = int(value)
|
|
res.hour = self._adjust_ampm(hour, info.ampm(tokens[idx + 2]))
|
|
idx += 1
|
|
else:
|
|
# Year, month or day
|
|
ymd.append(value)
|
|
idx += 1
|
|
|
|
elif info.ampm(tokens[idx + 1]) is not None and (0 <= value < 24):
|
|
# 12am
|
|
hour = int(value)
|
|
res.hour = self._adjust_ampm(hour, info.ampm(tokens[idx + 1]))
|
|
idx += 1
|
|
|
|
elif ymd.could_be_day(value):
|
|
ymd.append(value)
|
|
|
|
elif not fuzzy:
|
|
raise ValueError()
|
|
|
|
return idx
|
|
|
|
def _find_hms_idx(self, idx, tokens, info, allow_jump):
|
|
len_l = len(tokens)
|
|
|
|
if idx+1 < len_l and info.hms(tokens[idx+1]) is not None:
|
|
# There is an "h", "m", or "s" label following this token. We take
|
|
# assign the upcoming label to the current token.
|
|
# e.g. the "12" in 12h"
|
|
hms_idx = idx + 1
|
|
|
|
elif (allow_jump and idx+2 < len_l and tokens[idx+1] == ' ' and
|
|
info.hms(tokens[idx+2]) is not None):
|
|
# There is a space and then an "h", "m", or "s" label.
|
|
# e.g. the "12" in "12 h"
|
|
hms_idx = idx + 2
|
|
|
|
elif idx > 0 and info.hms(tokens[idx-1]) is not None:
|
|
# There is a "h", "m", or "s" preceding this token. Since neither
|
|
# of the previous cases was hit, there is no label following this
|
|
# token, so we use the previous label.
|
|
# e.g. the "04" in "12h04"
|
|
hms_idx = idx-1
|
|
|
|
elif (1 < idx == len_l-1 and tokens[idx-1] == ' ' and
|
|
info.hms(tokens[idx-2]) is not None):
|
|
# If we are looking at the final token, we allow for a
|
|
# backward-looking check to skip over a space.
|
|
# TODO: Are we sure this is the right condition here?
|
|
hms_idx = idx - 2
|
|
|
|
else:
|
|
hms_idx = None
|
|
|
|
return hms_idx
|
|
|
|
def _assign_hms(self, res, value_repr, hms):
|
|
# See GH issue #427, fixing float rounding
|
|
value = self._to_decimal(value_repr)
|
|
|
|
if hms == 0:
|
|
# Hour
|
|
res.hour = int(value)
|
|
if value % 1:
|
|
res.minute = int(60*(value % 1))
|
|
|
|
elif hms == 1:
|
|
(res.minute, res.second) = self._parse_min_sec(value)
|
|
|
|
elif hms == 2:
|
|
(res.second, res.microsecond) = self._parsems(value_repr)
|
|
|
|
def _could_be_tzname(self, hour, tzname, tzoffset, token):
|
|
return (hour is not None and
|
|
tzname is None and
|
|
tzoffset is None and
|
|
len(token) <= 5 and
|
|
(all(x in string.ascii_uppercase for x in token)
|
|
or token in self.info.UTCZONE))
|
|
|
|
def _ampm_valid(self, hour, ampm, fuzzy):
|
|
"""
|
|
For fuzzy parsing, 'a' or 'am' (both valid English words)
|
|
may erroneously trigger the AM/PM flag. Deal with that
|
|
here.
|
|
"""
|
|
val_is_ampm = True
|
|
|
|
# If there's already an AM/PM flag, this one isn't one.
|
|
if fuzzy and ampm is not None:
|
|
val_is_ampm = False
|
|
|
|
# If AM/PM is found and hour is not, raise a ValueError
|
|
if hour is None:
|
|
if fuzzy:
|
|
val_is_ampm = False
|
|
else:
|
|
raise ValueError('No hour specified with AM or PM flag.')
|
|
elif not 0 <= hour <= 12:
|
|
# If AM/PM is found, it's a 12 hour clock, so raise
|
|
# an error for invalid range
|
|
if fuzzy:
|
|
val_is_ampm = False
|
|
else:
|
|
raise ValueError('Invalid hour specified for 12-hour clock.')
|
|
|
|
return val_is_ampm
|
|
|
|
def _adjust_ampm(self, hour, ampm):
|
|
if hour < 12 and ampm == 1:
|
|
hour += 12
|
|
elif hour == 12 and ampm == 0:
|
|
hour = 0
|
|
return hour
|
|
|
|
def _parse_min_sec(self, value):
|
|
# TODO: Every usage of this function sets res.second to the return
|
|
# value. Are there any cases where second will be returned as None and
|
|
# we *don't* want to set res.second = None?
|
|
minute = int(value)
|
|
second = None
|
|
|
|
sec_remainder = value % 1
|
|
if sec_remainder:
|
|
second = int(60 * sec_remainder)
|
|
return (minute, second)
|
|
|
|
def _parse_hms(self, idx, tokens, info, hms_idx):
|
|
# TODO: Is this going to admit a lot of false-positives for when we
|
|
# just happen to have digits and "h", "m" or "s" characters in non-date
|
|
# text? I guess hex hashes won't have that problem, but there's plenty
|
|
# of random junk out there.
|
|
if hms_idx is None:
|
|
hms = None
|
|
new_idx = idx
|
|
elif hms_idx > idx:
|
|
hms = info.hms(tokens[hms_idx])
|
|
new_idx = hms_idx
|
|
else:
|
|
# Looking backwards, increment one.
|
|
hms = info.hms(tokens[hms_idx]) + 1
|
|
new_idx = idx
|
|
|
|
return (new_idx, hms)
|
|
|
|
# ------------------------------------------------------------------
|
|
# Handling for individual tokens. These are kept as methods instead
|
|
# of functions for the sake of customizability via subclassing.
|
|
|
|
def _parsems(self, value):
|
|
"""Parse a I[.F] seconds value into (seconds, microseconds)."""
|
|
if "." not in value:
|
|
return int(value), 0
|
|
else:
|
|
i, f = value.split(".")
|
|
return int(i), int(f.ljust(6, "0")[:6])
|
|
|
|
def _to_decimal(self, val):
|
|
try:
|
|
decimal_value = Decimal(val)
|
|
# See GH 662, edge case, infinite value should not be converted
|
|
# via `_to_decimal`
|
|
if not decimal_value.is_finite():
|
|
raise ValueError("Converted decimal value is infinite or NaN")
|
|
except Exception as e:
|
|
msg = "Could not convert %s to decimal" % val
|
|
six.raise_from(ValueError(msg), e)
|
|
else:
|
|
return decimal_value
|
|
|
|
# ------------------------------------------------------------------
|
|
# Post-Parsing construction of datetime output. These are kept as
|
|
# methods instead of functions for the sake of customizability via
|
|
# subclassing.
|
|
|
|
def _build_tzinfo(self, tzinfos, tzname, tzoffset):
|
|
if callable(tzinfos):
|
|
tzdata = tzinfos(tzname, tzoffset)
|
|
else:
|
|
tzdata = tzinfos.get(tzname)
|
|
# handle case where tzinfo is paased an options that returns None
|
|
# eg tzinfos = {'BRST' : None}
|
|
if isinstance(tzdata, datetime.tzinfo) or tzdata is None:
|
|
tzinfo = tzdata
|
|
elif isinstance(tzdata, text_type):
|
|
tzinfo = tz.tzstr(tzdata)
|
|
elif isinstance(tzdata, integer_types):
|
|
tzinfo = tz.tzoffset(tzname, tzdata)
|
|
else:
|
|
raise TypeError("Offset must be tzinfo subclass, tz string, "
|
|
"or int offset.")
|
|
return tzinfo
|
|
|
|
def _build_tzaware(self, naive, res, tzinfos):
|
|
if (callable(tzinfos) or (tzinfos and res.tzname in tzinfos)):
|
|
tzinfo = self._build_tzinfo(tzinfos, res.tzname, res.tzoffset)
|
|
aware = naive.replace(tzinfo=tzinfo)
|
|
aware = self._assign_tzname(aware, res.tzname)
|
|
|
|
elif res.tzname and res.tzname in time.tzname:
|
|
aware = naive.replace(tzinfo=tz.tzlocal())
|
|
|
|
# Handle ambiguous local datetime
|
|
aware = self._assign_tzname(aware, res.tzname)
|
|
|
|
# This is mostly relevant for winter GMT zones parsed in the UK
|
|
if (aware.tzname() != res.tzname and
|
|
res.tzname in self.info.UTCZONE):
|
|
aware = aware.replace(tzinfo=tz.UTC)
|
|
|
|
elif res.tzoffset == 0:
|
|
aware = naive.replace(tzinfo=tz.UTC)
|
|
|
|
elif res.tzoffset:
|
|
aware = naive.replace(tzinfo=tz.tzoffset(res.tzname, res.tzoffset))
|
|
|
|
elif not res.tzname and not res.tzoffset:
|
|
# i.e. no timezone information was found.
|
|
aware = naive
|
|
|
|
elif res.tzname:
|
|
# tz-like string was parsed but we don't know what to do
|
|
# with it
|
|
warnings.warn("tzname {tzname} identified but not understood. "
|
|
"Pass `tzinfos` argument in order to correctly "
|
|
"return a timezone-aware datetime. In a future "
|
|
"version, this will raise an "
|
|
"exception.".format(tzname=res.tzname),
|
|
category=UnknownTimezoneWarning)
|
|
aware = naive
|
|
|
|
return aware
|
|
|
|
def _build_naive(self, res, default):
|
|
repl = {}
|
|
for attr in ("year", "month", "day", "hour",
|
|
"minute", "second", "microsecond"):
|
|
value = getattr(res, attr)
|
|
if value is not None:
|
|
repl[attr] = value
|
|
|
|
if 'day' not in repl:
|
|
# If the default day exceeds the last day of the month, fall back
|
|
# to the end of the month.
|
|
cyear = default.year if res.year is None else res.year
|
|
cmonth = default.month if res.month is None else res.month
|
|
cday = default.day if res.day is None else res.day
|
|
|
|
if cday > monthrange(cyear, cmonth)[1]:
|
|
repl['day'] = monthrange(cyear, cmonth)[1]
|
|
|
|
naive = default.replace(**repl)
|
|
|
|
if res.weekday is not None and not res.day:
|
|
naive = naive + relativedelta.relativedelta(weekday=res.weekday)
|
|
|
|
return naive
|
|
|
|
def _assign_tzname(self, dt, tzname):
|
|
if dt.tzname() != tzname:
|
|
new_dt = tz.enfold(dt, fold=1)
|
|
if new_dt.tzname() == tzname:
|
|
return new_dt
|
|
|
|
return dt
|
|
|
|
def _recombine_skipped(self, tokens, skipped_idxs):
|
|
"""
|
|
>>> tokens = ["foo", " ", "bar", " ", "19June2000", "baz"]
|
|
>>> skipped_idxs = [0, 1, 2, 5]
|
|
>>> _recombine_skipped(tokens, skipped_idxs)
|
|
["foo bar", "baz"]
|
|
"""
|
|
skipped_tokens = []
|
|
for i, idx in enumerate(sorted(skipped_idxs)):
|
|
if i > 0 and idx - 1 == skipped_idxs[i - 1]:
|
|
skipped_tokens[-1] = skipped_tokens[-1] + tokens[idx]
|
|
else:
|
|
skipped_tokens.append(tokens[idx])
|
|
|
|
return skipped_tokens
|
|
|
|
|
|
DEFAULTPARSER = parser()
|
|
|
|
|
|
def parse(timestr, parserinfo=None, **kwargs):
|
|
"""
|
|
|
|
Parse a string in one of the supported formats, using the
|
|
``parserinfo`` parameters.
|
|
|
|
:param timestr:
|
|
A string containing a date/time stamp.
|
|
|
|
:param parserinfo:
|
|
A :class:`parserinfo` object containing parameters for the parser.
|
|
If ``None``, the default arguments to the :class:`parserinfo`
|
|
constructor are used.
|
|
|
|
The ``**kwargs`` parameter takes the following keyword arguments:
|
|
|
|
:param default:
|
|
The default datetime object, if this is a datetime object and not
|
|
``None``, elements specified in ``timestr`` replace elements in the
|
|
default object.
|
|
|
|
:param ignoretz:
|
|
If set ``True``, time zones in parsed strings are ignored and a naive
|
|
:class:`datetime` object is returned.
|
|
|
|
:param tzinfos:
|
|
Additional time zone names / aliases which may be present in the
|
|
string. This argument maps time zone names (and optionally offsets
|
|
from those time zones) to time zones. This parameter can be a
|
|
dictionary with timezone aliases mapping time zone names to time
|
|
zones or a function taking two parameters (``tzname`` and
|
|
``tzoffset``) and returning a time zone.
|
|
|
|
The timezones to which the names are mapped can be an integer
|
|
offset from UTC in seconds or a :class:`tzinfo` object.
|
|
|
|
.. doctest::
|
|
:options: +NORMALIZE_WHITESPACE
|
|
|
|
>>> from dateutil.parser import parse
|
|
>>> from dateutil.tz import gettz
|
|
>>> tzinfos = {"BRST": -7200, "CST": gettz("America/Chicago")}
|
|
>>> parse("2012-01-19 17:21:00 BRST", tzinfos=tzinfos)
|
|
datetime.datetime(2012, 1, 19, 17, 21, tzinfo=tzoffset(u'BRST', -7200))
|
|
>>> parse("2012-01-19 17:21:00 CST", tzinfos=tzinfos)
|
|
datetime.datetime(2012, 1, 19, 17, 21,
|
|
tzinfo=tzfile('/usr/share/zoneinfo/America/Chicago'))
|
|
|
|
This parameter is ignored if ``ignoretz`` is set.
|
|
|
|
:param dayfirst:
|
|
Whether to interpret the first value in an ambiguous 3-integer date
|
|
(e.g. 01/05/09) as the day (``True``) or month (``False``). If
|
|
``yearfirst`` is set to ``True``, this distinguishes between YDM and
|
|
YMD. If set to ``None``, this value is retrieved from the current
|
|
:class:`parserinfo` object (which itself defaults to ``False``).
|
|
|
|
:param yearfirst:
|
|
Whether to interpret the first value in an ambiguous 3-integer date
|
|
(e.g. 01/05/09) as the year. If ``True``, the first number is taken to
|
|
be the year, otherwise the last number is taken to be the year. If
|
|
this is set to ``None``, the value is retrieved from the current
|
|
:class:`parserinfo` object (which itself defaults to ``False``).
|
|
|
|
:param fuzzy:
|
|
Whether to allow fuzzy parsing, allowing for string like "Today is
|
|
January 1, 2047 at 8:21:00AM".
|
|
|
|
:param fuzzy_with_tokens:
|
|
If ``True``, ``fuzzy`` is automatically set to True, and the parser
|
|
will return a tuple where the first element is the parsed
|
|
:class:`datetime.datetime` datetimestamp and the second element is
|
|
a tuple containing the portions of the string which were ignored:
|
|
|
|
.. doctest::
|
|
|
|
>>> from dateutil.parser import parse
|
|
>>> parse("Today is January 1, 2047 at 8:21:00AM", fuzzy_with_tokens=True)
|
|
(datetime.datetime(2047, 1, 1, 8, 21), (u'Today is ', u' ', u'at '))
|
|
|
|
:return:
|
|
Returns a :class:`datetime.datetime` object or, if the
|
|
``fuzzy_with_tokens`` option is ``True``, returns a tuple, the
|
|
first element being a :class:`datetime.datetime` object, the second
|
|
a tuple containing the fuzzy tokens.
|
|
|
|
:raises ParserError:
|
|
Raised for invalid or unknown string formats, if the provided
|
|
:class:`tzinfo` is not in a valid format, or if an invalid date would
|
|
be created.
|
|
|
|
:raises OverflowError:
|
|
Raised if the parsed date exceeds the largest valid C integer on
|
|
your system.
|
|
"""
|
|
if parserinfo:
|
|
return parser(parserinfo).parse(timestr, **kwargs)
|
|
else:
|
|
return DEFAULTPARSER.parse(timestr, **kwargs)
|
|
|
|
|
|
class _tzparser(object):
|
|
|
|
class _result(_resultbase):
|
|
|
|
__slots__ = ["stdabbr", "stdoffset", "dstabbr", "dstoffset",
|
|
"start", "end"]
|
|
|
|
class _attr(_resultbase):
|
|
__slots__ = ["month", "week", "weekday",
|
|
"yday", "jyday", "day", "time"]
|
|
|
|
def __repr__(self):
|
|
return self._repr("")
|
|
|
|
def __init__(self):
|
|
_resultbase.__init__(self)
|
|
self.start = self._attr()
|
|
self.end = self._attr()
|
|
|
|
def parse(self, tzstr):
|
|
res = self._result()
|
|
l = [x for x in re.split(r'([,:.]|[a-zA-Z]+|[0-9]+)',tzstr) if x]
|
|
used_idxs = list()
|
|
try:
|
|
|
|
len_l = len(l)
|
|
|
|
i = 0
|
|
while i < len_l:
|
|
# BRST+3[BRDT[+2]]
|
|
j = i
|
|
while j < len_l and not [x for x in l[j]
|
|
if x in "0123456789:,-+"]:
|
|
j += 1
|
|
if j != i:
|
|
if not res.stdabbr:
|
|
offattr = "stdoffset"
|
|
res.stdabbr = "".join(l[i:j])
|
|
else:
|
|
offattr = "dstoffset"
|
|
res.dstabbr = "".join(l[i:j])
|
|
|
|
for ii in range(j):
|
|
used_idxs.append(ii)
|
|
i = j
|
|
if (i < len_l and (l[i] in ('+', '-') or l[i][0] in
|
|
"0123456789")):
|
|
if l[i] in ('+', '-'):
|
|
# Yes, that's right. See the TZ variable
|
|
# documentation.
|
|
signal = (1, -1)[l[i] == '+']
|
|
used_idxs.append(i)
|
|
i += 1
|
|
else:
|
|
signal = -1
|
|
len_li = len(l[i])
|
|
if len_li == 4:
|
|
# -0300
|
|
setattr(res, offattr, (int(l[i][:2]) * 3600 +
|
|
int(l[i][2:]) * 60) * signal)
|
|
elif i + 1 < len_l and l[i + 1] == ':':
|
|
# -03:00
|
|
setattr(res, offattr,
|
|
(int(l[i]) * 3600 +
|
|
int(l[i + 2]) * 60) * signal)
|
|
used_idxs.append(i)
|
|
i += 2
|
|
elif len_li <= 2:
|
|
# -[0]3
|
|
setattr(res, offattr,
|
|
int(l[i][:2]) * 3600 * signal)
|
|
else:
|
|
return None
|
|
used_idxs.append(i)
|
|
i += 1
|
|
if res.dstabbr:
|
|
break
|
|
else:
|
|
break
|
|
|
|
|
|
if i < len_l:
|
|
for j in range(i, len_l):
|
|
if l[j] == ';':
|
|
l[j] = ','
|
|
|
|
assert l[i] == ','
|
|
|
|
i += 1
|
|
|
|
if i >= len_l:
|
|
pass
|
|
elif (8 <= l.count(',') <= 9 and
|
|
not [y for x in l[i:] if x != ','
|
|
for y in x if y not in "0123456789+-"]):
|
|
# GMT0BST,3,0,30,3600,10,0,26,7200[,3600]
|
|
for x in (res.start, res.end):
|
|
x.month = int(l[i])
|
|
used_idxs.append(i)
|
|
i += 2
|
|
if l[i] == '-':
|
|
value = int(l[i + 1]) * -1
|
|
used_idxs.append(i)
|
|
i += 1
|
|
else:
|
|
value = int(l[i])
|
|
used_idxs.append(i)
|
|
i += 2
|
|
if value:
|
|
x.week = value
|
|
x.weekday = (int(l[i]) - 1) % 7
|
|
else:
|
|
x.day = int(l[i])
|
|
used_idxs.append(i)
|
|
i += 2
|
|
x.time = int(l[i])
|
|
used_idxs.append(i)
|
|
i += 2
|
|
if i < len_l:
|
|
if l[i] in ('-', '+'):
|
|
signal = (-1, 1)[l[i] == "+"]
|
|
used_idxs.append(i)
|
|
i += 1
|
|
else:
|
|
signal = 1
|
|
used_idxs.append(i)
|
|
res.dstoffset = (res.stdoffset + int(l[i]) * signal)
|
|
|
|
# This was a made-up format that is not in normal use
|
|
warn(('Parsed time zone "%s"' % tzstr) +
|
|
'is in a non-standard dateutil-specific format, which ' +
|
|
'is now deprecated; support for parsing this format ' +
|
|
'will be removed in future versions. It is recommended ' +
|
|
'that you switch to a standard format like the GNU ' +
|
|
'TZ variable format.', tz.DeprecatedTzFormatWarning)
|
|
elif (l.count(',') == 2 and l[i:].count('/') <= 2 and
|
|
not [y for x in l[i:] if x not in (',', '/', 'J', 'M',
|
|
'.', '-', ':')
|
|
for y in x if y not in "0123456789"]):
|
|
for x in (res.start, res.end):
|
|
if l[i] == 'J':
|
|
# non-leap year day (1 based)
|
|
used_idxs.append(i)
|
|
i += 1
|
|
x.jyday = int(l[i])
|
|
elif l[i] == 'M':
|
|
# month[-.]week[-.]weekday
|
|
used_idxs.append(i)
|
|
i += 1
|
|
x.month = int(l[i])
|
|
used_idxs.append(i)
|
|
i += 1
|
|
assert l[i] in ('-', '.')
|
|
used_idxs.append(i)
|
|
i += 1
|
|
x.week = int(l[i])
|
|
if x.week == 5:
|
|
x.week = -1
|
|
used_idxs.append(i)
|
|
i += 1
|
|
assert l[i] in ('-', '.')
|
|
used_idxs.append(i)
|
|
i += 1
|
|
x.weekday = (int(l[i]) - 1) % 7
|
|
else:
|
|
# year day (zero based)
|
|
x.yday = int(l[i]) + 1
|
|
|
|
used_idxs.append(i)
|
|
i += 1
|
|
|
|
if i < len_l and l[i] == '/':
|
|
used_idxs.append(i)
|
|
i += 1
|
|
# start time
|
|
len_li = len(l[i])
|
|
if len_li == 4:
|
|
# -0300
|
|
x.time = (int(l[i][:2]) * 3600 +
|
|
int(l[i][2:]) * 60)
|
|
elif i + 1 < len_l and l[i + 1] == ':':
|
|
# -03:00
|
|
x.time = int(l[i]) * 3600 + int(l[i + 2]) * 60
|
|
used_idxs.append(i)
|
|
i += 2
|
|
if i + 1 < len_l and l[i + 1] == ':':
|
|
used_idxs.append(i)
|
|
i += 2
|
|
x.time += int(l[i])
|
|
elif len_li <= 2:
|
|
# -[0]3
|
|
x.time = (int(l[i][:2]) * 3600)
|
|
else:
|
|
return None
|
|
used_idxs.append(i)
|
|
i += 1
|
|
|
|
assert i == len_l or l[i] == ','
|
|
|
|
i += 1
|
|
|
|
assert i >= len_l
|
|
|
|
except (IndexError, ValueError, AssertionError):
|
|
return None
|
|
|
|
unused_idxs = set(range(len_l)).difference(used_idxs)
|
|
res.any_unused_tokens = not {l[n] for n in unused_idxs}.issubset({",",":"})
|
|
return res
|
|
|
|
|
|
DEFAULTTZPARSER = _tzparser()
|
|
|
|
|
|
def _parsetz(tzstr):
|
|
return DEFAULTTZPARSER.parse(tzstr)
|
|
|
|
|
|
class ParserError(ValueError):
|
|
"""Exception subclass used for any failure to parse a datetime string.
|
|
|
|
This is a subclass of :py:exc:`ValueError`, and should be raised any time
|
|
earlier versions of ``dateutil`` would have raised ``ValueError``.
|
|
|
|
.. versionadded:: 2.8.1
|
|
"""
|
|
def __str__(self):
|
|
try:
|
|
return self.args[0] % self.args[1:]
|
|
except (TypeError, IndexError):
|
|
return super(ParserError, self).__str__()
|
|
|
|
def __repr__(self):
|
|
args = ", ".join("'%s'" % arg for arg in self.args)
|
|
return "%s(%s)" % (self.__class__.__name__, args)
|
|
|
|
|
|
class UnknownTimezoneWarning(RuntimeWarning):
|
|
"""Raised when the parser finds a timezone it cannot parse into a tzinfo.
|
|
|
|
.. versionadded:: 2.7.0
|
|
"""
|
|
# vim:ts=4:sw=4:et
|