mirror of
https://github.com/Mikaela/Limnoria.git
synced 2024-12-05 01:19:32 +01:00
887 lines
32 KiB
Python
887 lines
32 KiB
Python
# -*- coding:iso-8859-1 -*-
|
|
"""
|
|
Copyright (c) 2003-2007 Gustavo Niemeyer <gustavo@niemeyer.net>
|
|
|
|
This module offers extensions to the standard python 2.3+
|
|
datetime module.
|
|
"""
|
|
__author__ = "Gustavo Niemeyer <gustavo@niemeyer.net>"
|
|
__license__ = "PSF License"
|
|
|
|
import datetime
|
|
import string
|
|
import time
|
|
import sys
|
|
import os
|
|
|
|
try:
|
|
from cStringIO import StringIO
|
|
except ImportError:
|
|
from StringIO import StringIO
|
|
|
|
import relativedelta
|
|
import tz
|
|
|
|
|
|
__all__ = ["parse", "parserinfo"]
|
|
|
|
|
|
# Some pointers:
|
|
#
|
|
# http://www.cl.cam.ac.uk/~mgk25/iso-time.html
|
|
# http://www.iso.ch/iso/en/prods-services/popstds/datesandtime.html
|
|
# http://www.w3.org/TR/NOTE-datetime
|
|
# http://ringmaster.arc.nasa.gov/tools/time_formats.html
|
|
# http://search.cpan.org/author/MUIR/Time-modules-2003.0211/lib/Time/ParseDate.pm
|
|
# http://stein.cshl.org/jade/distrib/docs/java.text.SimpleDateFormat.html
|
|
|
|
|
|
class _timelex(object):
|
|
|
|
def __init__(self, instream):
|
|
if isinstance(instream, basestring):
|
|
instream = StringIO(instream)
|
|
self.instream = instream
|
|
self.wordchars = ('abcdfeghijklmnopqrstuvwxyz'
|
|
'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'
|
|
'ßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿ'
|
|
'ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞ')
|
|
self.numchars = '0123456789'
|
|
self.whitespace = ' \t\r\n'
|
|
self.charstack = []
|
|
self.tokenstack = []
|
|
self.eof = False
|
|
|
|
def get_token(self):
|
|
if self.tokenstack:
|
|
return self.tokenstack.pop(0)
|
|
seenletters = False
|
|
token = None
|
|
state = None
|
|
wordchars = self.wordchars
|
|
numchars = self.numchars
|
|
whitespace = self.whitespace
|
|
while not self.eof:
|
|
if self.charstack:
|
|
nextchar = self.charstack.pop(0)
|
|
else:
|
|
nextchar = self.instream.read(1)
|
|
while nextchar == '\x00':
|
|
nextchar = self.instream.read(1)
|
|
if not nextchar:
|
|
self.eof = True
|
|
break
|
|
elif not state:
|
|
token = nextchar
|
|
if nextchar in wordchars:
|
|
state = 'a'
|
|
elif nextchar in numchars:
|
|
state = '0'
|
|
elif nextchar in whitespace:
|
|
token = ' '
|
|
break # emit token
|
|
else:
|
|
break # emit token
|
|
elif state == 'a':
|
|
seenletters = True
|
|
if nextchar in wordchars:
|
|
token += nextchar
|
|
elif nextchar == '.':
|
|
token += nextchar
|
|
state = 'a.'
|
|
else:
|
|
self.charstack.append(nextchar)
|
|
break # emit token
|
|
elif state == '0':
|
|
if nextchar in numchars:
|
|
token += nextchar
|
|
elif nextchar == '.':
|
|
token += nextchar
|
|
state = '0.'
|
|
else:
|
|
self.charstack.append(nextchar)
|
|
break # emit token
|
|
elif state == 'a.':
|
|
seenletters = True
|
|
if nextchar == '.' or nextchar in wordchars:
|
|
token += nextchar
|
|
elif nextchar in numchars and token[-1] == '.':
|
|
token += nextchar
|
|
state = '0.'
|
|
else:
|
|
self.charstack.append(nextchar)
|
|
break # emit token
|
|
elif state == '0.':
|
|
if nextchar == '.' or nextchar in numchars:
|
|
token += nextchar
|
|
elif nextchar in wordchars and token[-1] == '.':
|
|
token += nextchar
|
|
state = 'a.'
|
|
else:
|
|
self.charstack.append(nextchar)
|
|
break # emit token
|
|
if (state in ('a.', '0.') and
|
|
(seenletters or token.count('.') > 1 or token[-1] == '.')):
|
|
l = token.split('.')
|
|
token = l[0]
|
|
for tok in l[1:]:
|
|
self.tokenstack.append('.')
|
|
if tok:
|
|
self.tokenstack.append(tok)
|
|
return token
|
|
|
|
def __iter__(self):
|
|
return self
|
|
|
|
def next(self):
|
|
token = self.get_token()
|
|
if token is None:
|
|
raise StopIteration
|
|
return token
|
|
|
|
def split(cls, s):
|
|
return list(cls(s))
|
|
split = classmethod(split)
|
|
|
|
|
|
class _resultbase(object):
|
|
|
|
def __init__(self):
|
|
for attr in self.__slots__:
|
|
setattr(self, attr, None)
|
|
|
|
def _repr(self, classname):
|
|
l = []
|
|
for attr in self.__slots__:
|
|
value = getattr(self, attr)
|
|
if value is not None:
|
|
l.append("%s=%s" % (attr, `value`))
|
|
return "%s(%s)" % (classname, ", ".join(l))
|
|
|
|
def __repr__(self):
|
|
return self._repr(self.__class__.__name__)
|
|
|
|
|
|
class parserinfo(object):
|
|
|
|
# m from a.m/p.m, t from ISO T separator
|
|
JUMP = [" ", ".", ",", ";", "-", "/", "'",
|
|
"at", "on", "and", "ad", "m", "t", "of",
|
|
"st", "nd", "rd", "th"]
|
|
|
|
WEEKDAYS = [("Mon", "Monday"),
|
|
("Tue", "Tuesday"),
|
|
("Wed", "Wednesday"),
|
|
("Thu", "Thursday"),
|
|
("Fri", "Friday"),
|
|
("Sat", "Saturday"),
|
|
("Sun", "Sunday")]
|
|
MONTHS = [("Jan", "January"),
|
|
("Feb", "February"),
|
|
("Mar", "March"),
|
|
("Apr", "April"),
|
|
("May", "May"),
|
|
("Jun", "June"),
|
|
("Jul", "July"),
|
|
("Aug", "August"),
|
|
("Sep", "September"),
|
|
("Oct", "October"),
|
|
("Nov", "November"),
|
|
("Dec", "December")]
|
|
HMS = [("h", "hour", "hours"),
|
|
("m", "minute", "minutes"),
|
|
("s", "second", "seconds")]
|
|
AMPM = [("am", "a"),
|
|
("pm", "p")]
|
|
UTCZONE = ["UTC", "GMT", "Z"]
|
|
PERTAIN = ["of"]
|
|
TZOFFSET = {}
|
|
|
|
def __init__(self, dayfirst=False, yearfirst=False):
|
|
self._jump = self._convert(self.JUMP)
|
|
self._weekdays = self._convert(self.WEEKDAYS)
|
|
self._months = self._convert(self.MONTHS)
|
|
self._hms = self._convert(self.HMS)
|
|
self._ampm = self._convert(self.AMPM)
|
|
self._utczone = self._convert(self.UTCZONE)
|
|
self._pertain = self._convert(self.PERTAIN)
|
|
|
|
self.dayfirst = dayfirst
|
|
self.yearfirst = yearfirst
|
|
|
|
self._year = time.localtime().tm_year
|
|
self._century = self._year//100*100
|
|
|
|
def _convert(self, lst):
|
|
dct = {}
|
|
for i in range(len(lst)):
|
|
v = lst[i]
|
|
if isinstance(v, tuple):
|
|
for v in v:
|
|
dct[v.lower()] = i
|
|
else:
|
|
dct[v.lower()] = i
|
|
return dct
|
|
|
|
def jump(self, name):
|
|
return name.lower() in self._jump
|
|
|
|
def weekday(self, name):
|
|
if len(name) >= 3:
|
|
try:
|
|
return self._weekdays[name.lower()]
|
|
except KeyError:
|
|
pass
|
|
return None
|
|
|
|
def month(self, name):
|
|
if len(name) >= 3:
|
|
try:
|
|
return self._months[name.lower()]+1
|
|
except KeyError:
|
|
pass
|
|
return None
|
|
|
|
def hms(self, name):
|
|
try:
|
|
return self._hms[name.lower()]
|
|
except KeyError:
|
|
return None
|
|
|
|
def ampm(self, name):
|
|
try:
|
|
return self._ampm[name.lower()]
|
|
except KeyError:
|
|
return None
|
|
|
|
def pertain(self, name):
|
|
return name.lower() in self._pertain
|
|
|
|
def utczone(self, name):
|
|
return name.lower() in self._utczone
|
|
|
|
def tzoffset(self, name):
|
|
if name in self._utczone:
|
|
return 0
|
|
return self.TZOFFSET.get(name)
|
|
|
|
def convertyear(self, year):
|
|
if year < 100:
|
|
year += self._century
|
|
if abs(year-self._year) >= 50:
|
|
if year < self._year:
|
|
year += 100
|
|
else:
|
|
year -= 100
|
|
return year
|
|
|
|
def validate(self, res):
|
|
# move to info
|
|
if res.year is not None:
|
|
res.year = self.convertyear(res.year)
|
|
if res.tzoffset == 0 and not res.tzname or res.tzname == 'Z':
|
|
res.tzname = "UTC"
|
|
res.tzoffset = 0
|
|
elif res.tzoffset != 0 and res.tzname and self.utczone(res.tzname):
|
|
res.tzoffset = 0
|
|
return True
|
|
|
|
|
|
class parser(object):
|
|
|
|
def __init__(self, info=None):
|
|
self.info = info or parserinfo()
|
|
|
|
def parse(self, timestr, default=None,
|
|
ignoretz=False, tzinfos=None,
|
|
**kwargs):
|
|
if not default:
|
|
default = datetime.datetime.now().replace(hour=0, minute=0,
|
|
second=0, microsecond=0)
|
|
res = self._parse(timestr, **kwargs)
|
|
if res is None:
|
|
raise ValueError, "unknown string format"
|
|
repl = {}
|
|
for attr in ["year", "month", "day", "hour",
|
|
"minute", "second", "microsecond"]:
|
|
value = getattr(res, attr)
|
|
if value is not None:
|
|
repl[attr] = value
|
|
ret = default.replace(**repl)
|
|
if res.weekday is not None and not res.day:
|
|
ret = ret+relativedelta.relativedelta(weekday=res.weekday)
|
|
if not ignoretz:
|
|
if callable(tzinfos) or tzinfos and res.tzname in tzinfos:
|
|
if callable(tzinfos):
|
|
tzdata = tzinfos(res.tzname, res.tzoffset)
|
|
else:
|
|
tzdata = tzinfos.get(res.tzname)
|
|
if isinstance(tzdata, datetime.tzinfo):
|
|
tzinfo = tzdata
|
|
elif isinstance(tzdata, basestring):
|
|
tzinfo = tz.tzstr(tzdata)
|
|
elif isinstance(tzdata, int):
|
|
tzinfo = tz.tzoffset(res.tzname, tzdata)
|
|
else:
|
|
raise ValueError, "offset must be tzinfo subclass, " \
|
|
"tz string, or int offset"
|
|
ret = ret.replace(tzinfo=tzinfo)
|
|
elif res.tzname and res.tzname in time.tzname:
|
|
ret = ret.replace(tzinfo=tz.tzlocal())
|
|
elif res.tzoffset == 0:
|
|
ret = ret.replace(tzinfo=tz.tzutc())
|
|
elif res.tzoffset:
|
|
ret = ret.replace(tzinfo=tz.tzoffset(res.tzname, res.tzoffset))
|
|
return ret
|
|
|
|
class _result(_resultbase):
|
|
__slots__ = ["year", "month", "day", "weekday",
|
|
"hour", "minute", "second", "microsecond",
|
|
"tzname", "tzoffset"]
|
|
|
|
def _parse(self, timestr, dayfirst=None, yearfirst=None, fuzzy=False):
|
|
info = self.info
|
|
if dayfirst is None:
|
|
dayfirst = info.dayfirst
|
|
if yearfirst is None:
|
|
yearfirst = info.yearfirst
|
|
res = self._result()
|
|
l = _timelex.split(timestr)
|
|
try:
|
|
|
|
# year/month/day list
|
|
ymd = []
|
|
|
|
# Index of the month string in ymd
|
|
mstridx = -1
|
|
|
|
len_l = len(l)
|
|
i = 0
|
|
while i < len_l:
|
|
|
|
# Check if it's a number
|
|
try:
|
|
value_repr = l[i]
|
|
value = float(value_repr)
|
|
except ValueError:
|
|
value = None
|
|
|
|
if value is not None:
|
|
# Token is a number
|
|
len_li = len(l[i])
|
|
i += 1
|
|
if (len(ymd) == 3 and len_li in (2, 4)
|
|
and (i >= len_l or (l[i] != ':' and
|
|
info.hms(l[i]) is None))):
|
|
# 19990101T23[59]
|
|
s = l[i-1]
|
|
res.hour = int(s[:2])
|
|
if len_li == 4:
|
|
res.minute = int(s[2:])
|
|
elif len_li == 6 or (len_li > 6 and l[i-1].find('.') == 6):
|
|
# YYMMDD or HHMMSS[.ss]
|
|
s = l[i-1]
|
|
if not ymd and l[i-1].find('.') == -1:
|
|
ymd.append(info.convertyear(int(s[:2])))
|
|
ymd.append(int(s[2:4]))
|
|
ymd.append(int(s[4:]))
|
|
else:
|
|
# 19990101T235959[.59]
|
|
res.hour = int(s[:2])
|
|
res.minute = int(s[2:4])
|
|
res.second, res.microsecond = _parsems(s[4:])
|
|
elif len_li == 8:
|
|
# YYYYMMDD
|
|
s = l[i-1]
|
|
ymd.append(int(s[:4]))
|
|
ymd.append(int(s[4:6]))
|
|
ymd.append(int(s[6:]))
|
|
elif len_li in (12, 14):
|
|
# YYYYMMDDhhmm[ss]
|
|
s = l[i-1]
|
|
ymd.append(int(s[:4]))
|
|
ymd.append(int(s[4:6]))
|
|
ymd.append(int(s[6:8]))
|
|
res.hour = int(s[8:10])
|
|
res.minute = int(s[10:12])
|
|
if len_li == 14:
|
|
res.second = int(s[12:])
|
|
elif ((i < len_l and info.hms(l[i]) is not None) or
|
|
(i+1 < len_l and l[i] == ' ' and
|
|
info.hms(l[i+1]) is not None)):
|
|
# HH[ ]h or MM[ ]m or SS[.ss][ ]s
|
|
if l[i] == ' ':
|
|
i += 1
|
|
idx = info.hms(l[i])
|
|
while True:
|
|
if idx == 0:
|
|
res.hour = int(value)
|
|
if value%1:
|
|
res.minute = int(60*(value%1))
|
|
elif idx == 1:
|
|
res.minute = int(value)
|
|
if value%1:
|
|
res.second = int(60*(value%1))
|
|
elif idx == 2:
|
|
res.second, res.microsecond = \
|
|
_parsems(value_repr)
|
|
i += 1
|
|
if i >= len_l or idx == 2:
|
|
break
|
|
# 12h00
|
|
try:
|
|
value_repr = l[i]
|
|
value = float(value_repr)
|
|
except ValueError:
|
|
break
|
|
else:
|
|
i += 1
|
|
idx += 1
|
|
if i < len_l:
|
|
newidx = info.hms(l[i])
|
|
if newidx is not None:
|
|
idx = newidx
|
|
elif i+1 < len_l and l[i] == ':':
|
|
# HH:MM[:SS[.ss]]
|
|
res.hour = int(value)
|
|
i += 1
|
|
value = float(l[i])
|
|
res.minute = int(value)
|
|
if value%1:
|
|
res.second = int(60*(value%1))
|
|
i += 1
|
|
if i < len_l and l[i] == ':':
|
|
res.second, res.microsecond = _parsems(l[i+1])
|
|
i += 2
|
|
elif i < len_l and l[i] in ('-', '/', '.'):
|
|
sep = l[i]
|
|
ymd.append(int(value))
|
|
i += 1
|
|
if i < len_l and not info.jump(l[i]):
|
|
try:
|
|
# 01-01[-01]
|
|
ymd.append(int(l[i]))
|
|
except ValueError:
|
|
# 01-Jan[-01]
|
|
value = info.month(l[i])
|
|
if value is not None:
|
|
ymd.append(value)
|
|
assert mstridx == -1
|
|
mstridx = len(ymd)-1
|
|
else:
|
|
return None
|
|
i += 1
|
|
if i < len_l and l[i] == sep:
|
|
# We have three members
|
|
i += 1
|
|
value = info.month(l[i])
|
|
if value is not None:
|
|
ymd.append(value)
|
|
mstridx = len(ymd)-1
|
|
assert mstridx == -1
|
|
else:
|
|
ymd.append(int(l[i]))
|
|
i += 1
|
|
elif i >= len_l or info.jump(l[i]):
|
|
if i+1 < len_l and info.ampm(l[i+1]) is not None:
|
|
# 12 am
|
|
res.hour = int(value)
|
|
if res.hour < 12 and info.ampm(l[i+1]) == 1:
|
|
res.hour += 12
|
|
elif res.hour == 12 and info.ampm(l[i+1]) == 0:
|
|
res.hour = 0
|
|
i += 1
|
|
else:
|
|
# Year, month or day
|
|
ymd.append(int(value))
|
|
i += 1
|
|
elif info.ampm(l[i]) is not None:
|
|
# 12am
|
|
res.hour = int(value)
|
|
if res.hour < 12 and info.ampm(l[i]) == 1:
|
|
res.hour += 12
|
|
elif res.hour == 12 and info.ampm(l[i]) == 0:
|
|
res.hour = 0
|
|
i += 1
|
|
elif not fuzzy:
|
|
return None
|
|
else:
|
|
i += 1
|
|
continue
|
|
|
|
# Check weekday
|
|
value = info.weekday(l[i])
|
|
if value is not None:
|
|
res.weekday = value
|
|
i += 1
|
|
continue
|
|
|
|
# Check month name
|
|
value = info.month(l[i])
|
|
if value is not None:
|
|
ymd.append(value)
|
|
assert mstridx == -1
|
|
mstridx = len(ymd)-1
|
|
i += 1
|
|
if i < len_l:
|
|
if l[i] in ('-', '/'):
|
|
# Jan-01[-99]
|
|
sep = l[i]
|
|
i += 1
|
|
ymd.append(int(l[i]))
|
|
i += 1
|
|
if i < len_l and l[i] == sep:
|
|
# Jan-01-99
|
|
i += 1
|
|
ymd.append(int(l[i]))
|
|
i += 1
|
|
elif (i+3 < len_l and l[i] == l[i+2] == ' '
|
|
and info.pertain(l[i+1])):
|
|
# Jan of 01
|
|
# In this case, 01 is clearly year
|
|
try:
|
|
value = int(l[i+3])
|
|
except ValueError:
|
|
# Wrong guess
|
|
pass
|
|
else:
|
|
# Convert it here to become unambiguous
|
|
ymd.append(info.convertyear(value))
|
|
i += 4
|
|
continue
|
|
|
|
# Check am/pm
|
|
value = info.ampm(l[i])
|
|
if value is not None:
|
|
if value == 1 and res.hour < 12:
|
|
res.hour += 12
|
|
elif value == 0 and res.hour == 12:
|
|
res.hour = 0
|
|
i += 1
|
|
continue
|
|
|
|
# Check for a timezone name
|
|
if (res.hour is not None and len(l[i]) <= 5 and
|
|
res.tzname is None and res.tzoffset is None and
|
|
not [x for x in l[i] if x not in string.ascii_uppercase]):
|
|
res.tzname = l[i]
|
|
res.tzoffset = info.tzoffset(res.tzname)
|
|
i += 1
|
|
|
|
# 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 < len_l and l[i] in ('+', '-'):
|
|
l[i] = ('+', '-')[l[i] == '+']
|
|
res.tzoffset = None
|
|
if info.utczone(res.tzname):
|
|
# With something like GMT+3, the timezone
|
|
# is *not* GMT.
|
|
res.tzname = None
|
|
|
|
continue
|
|
|
|
# Check for a numbered timezone
|
|
if res.hour is not None and l[i] in ('+', '-'):
|
|
signal = (-1,1)[l[i] == '+']
|
|
i += 1
|
|
len_li = len(l[i])
|
|
if len_li == 4:
|
|
# -0300
|
|
res.tzoffset = int(l[i][:2])*3600+int(l[i][2:])*60
|
|
elif i+1 < len_l and l[i+1] == ':':
|
|
# -03:00
|
|
res.tzoffset = int(l[i])*3600+int(l[i+2])*60
|
|
i += 2
|
|
elif len_li <= 2:
|
|
# -[0]3
|
|
res.tzoffset = int(l[i][:2])*3600
|
|
else:
|
|
return None
|
|
i += 1
|
|
res.tzoffset *= signal
|
|
|
|
# Look for a timezone name between parenthesis
|
|
if (i+3 < len_l and
|
|
info.jump(l[i]) and l[i+1] == '(' and l[i+3] == ')' and
|
|
3 <= len(l[i+2]) <= 5 and
|
|
not [x for x in l[i+2]
|
|
if x not in string.ascii_uppercase]):
|
|
# -0300 (BRST)
|
|
res.tzname = l[i+2]
|
|
i += 4
|
|
continue
|
|
|
|
# Check jumps
|
|
if not (info.jump(l[i]) or fuzzy):
|
|
return None
|
|
|
|
i += 1
|
|
|
|
# Process year/month/day
|
|
len_ymd = len(ymd)
|
|
if len_ymd > 3:
|
|
# More than three members!?
|
|
return None
|
|
elif len_ymd == 1 or (mstridx != -1 and len_ymd == 2):
|
|
# One member, or two members with a month string
|
|
if mstridx != -1:
|
|
res.month = ymd[mstridx]
|
|
del ymd[mstridx]
|
|
if len_ymd > 1 or mstridx == -1:
|
|
if ymd[0] > 31:
|
|
res.year = ymd[0]
|
|
else:
|
|
res.day = ymd[0]
|
|
elif len_ymd == 2:
|
|
# Two members with numbers
|
|
if ymd[0] > 31:
|
|
# 99-01
|
|
res.year, res.month = ymd
|
|
elif ymd[1] > 31:
|
|
# 01-99
|
|
res.month, res.year = ymd
|
|
elif dayfirst and ymd[1] <= 12:
|
|
# 13-01
|
|
res.day, res.month = ymd
|
|
else:
|
|
# 01-13
|
|
res.month, res.day = ymd
|
|
if len_ymd == 3:
|
|
# Three members
|
|
if mstridx == 0:
|
|
res.month, res.day, res.year = ymd
|
|
elif mstridx == 1:
|
|
if ymd[0] > 31 or (yearfirst and ymd[2] <= 31):
|
|
# 99-Jan-01
|
|
res.year, res.month, res.day = ymd
|
|
else:
|
|
# 01-Jan-01
|
|
# Give precendence to day-first, since
|
|
# two-digit years is usually hand-written.
|
|
res.day, res.month, res.year = ymd
|
|
elif mstridx == 2:
|
|
# WTF!?
|
|
if ymd[1] > 31:
|
|
# 01-99-Jan
|
|
res.day, res.year, res.month = ymd
|
|
else:
|
|
# 99-01-Jan
|
|
res.year, res.day, res.month = ymd
|
|
else:
|
|
if ymd[0] > 31 or \
|
|
(yearfirst and ymd[1] <= 12 and ymd[2] <= 31):
|
|
# 99-01-01
|
|
res.year, res.month, res.day = ymd
|
|
elif ymd[0] > 12 or (dayfirst and ymd[1] <= 12):
|
|
# 13-01-01
|
|
res.day, res.month, res.year = ymd
|
|
else:
|
|
# 01-13-01
|
|
res.month, res.day, res.year = ymd
|
|
|
|
except (IndexError, ValueError, AssertionError):
|
|
return None
|
|
|
|
if not info.validate(res):
|
|
return None
|
|
return res
|
|
|
|
DEFAULTPARSER = parser()
|
|
def parse(timestr, parserinfo=None, **kwargs):
|
|
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 = _timelex.split(tzstr)
|
|
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])
|
|
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] == '+']
|
|
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)
|
|
i += 2
|
|
elif len_li <= 2:
|
|
# -[0]3
|
|
setattr(res, offattr,
|
|
int(l[i][:2])*3600*signal)
|
|
else:
|
|
return None
|
|
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])
|
|
i += 2
|
|
if l[i] == '-':
|
|
value = int(l[i+1])*-1
|
|
i += 1
|
|
else:
|
|
value = int(l[i])
|
|
i += 2
|
|
if value:
|
|
x.week = value
|
|
x.weekday = (int(l[i])-1)%7
|
|
else:
|
|
x.day = int(l[i])
|
|
i += 2
|
|
x.time = int(l[i])
|
|
i += 2
|
|
if i < len_l:
|
|
if l[i] in ('-','+'):
|
|
signal = (-1,1)[l[i] == "+"]
|
|
i += 1
|
|
else:
|
|
signal = 1
|
|
res.dstoffset = (res.stdoffset+int(l[i]))*signal
|
|
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)
|
|
i += 1
|
|
x.jyday = int(l[i])
|
|
elif l[i] == 'M':
|
|
# month[-.]week[-.]weekday
|
|
i += 1
|
|
x.month = int(l[i])
|
|
i += 1
|
|
assert l[i] in ('-', '.')
|
|
i += 1
|
|
x.week = int(l[i])
|
|
if x.week == 5:
|
|
x.week = -1
|
|
i += 1
|
|
assert l[i] in ('-', '.')
|
|
i += 1
|
|
x.weekday = (int(l[i])-1)%7
|
|
else:
|
|
# year day (zero based)
|
|
x.yday = int(l[i])+1
|
|
|
|
i += 1
|
|
|
|
if i < len_l and l[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
|
|
i += 2
|
|
if i+1 < len_l and l[i+1] == ':':
|
|
i += 2
|
|
x.time += int(l[i])
|
|
elif len_li <= 2:
|
|
# -[0]3
|
|
x.time = (int(l[i][:2])*3600)
|
|
else:
|
|
return None
|
|
i += 1
|
|
|
|
assert i == len_l or l[i] == ','
|
|
|
|
i += 1
|
|
|
|
assert i >= len_l
|
|
|
|
except (IndexError, ValueError, AssertionError):
|
|
return None
|
|
|
|
return res
|
|
|
|
|
|
DEFAULTTZPARSER = _tzparser()
|
|
def _parsetz(tzstr):
|
|
return DEFAULTTZPARSER.parse(tzstr)
|
|
|
|
|
|
def _parsems(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])
|
|
|
|
|
|
# vim:ts=4:sw=4:et
|