106 lines
3.7 KiB
Python
106 lines
3.7 KiB
Python
|
import re
|
||
|
|
from calendar import day_abbr, day_name, month_abbr, month_name
|
||
|
|
from datetime import datetime as datetime_
|
||
|
|
from datetime import timedelta, timezone
|
||
|
|
from time import localtime, strftime
|
||
|
|
|
||
|
|
tokens = r"H{1,2}|h{1,2}|m{1,2}|s{1,2}|S+|YYYY|YY|M{1,4}|D{1,4}|Z{1,2}|zz|A|X|x|E|Q|dddd|ddd|d"
|
||
|
|
|
||
|
|
pattern = re.compile(r"(?:{0})|\[(?:{0}|!UTC|)\]".format(tokens))
|
||
|
|
|
||
|
|
|
||
|
|
class datetime(datetime_): # noqa: N801
|
||
|
|
def __format__(self, spec):
|
||
|
|
if spec.endswith("!UTC"):
|
||
|
|
dt = self.astimezone(timezone.utc)
|
||
|
|
spec = spec[:-4]
|
||
|
|
else:
|
||
|
|
dt = self
|
||
|
|
|
||
|
|
if not spec:
|
||
|
|
spec = "%Y-%m-%dT%H:%M:%S.%f%z"
|
||
|
|
|
||
|
|
if "%" in spec:
|
||
|
|
return datetime_.__format__(dt, spec)
|
||
|
|
|
||
|
|
if "SSSSSSS" in spec:
|
||
|
|
raise ValueError(
|
||
|
|
"Invalid time format: the provided format string contains more than six successive "
|
||
|
|
"'S' characters. This may be due to an attempt to use nanosecond precision, which "
|
||
|
|
"is not supported."
|
||
|
|
)
|
||
|
|
|
||
|
|
year, month, day, hour, minute, second, weekday, yearday, _ = dt.timetuple()
|
||
|
|
microsecond = dt.microsecond
|
||
|
|
timestamp = dt.timestamp()
|
||
|
|
tzinfo = dt.tzinfo or timezone(timedelta(seconds=0))
|
||
|
|
offset = tzinfo.utcoffset(dt).total_seconds()
|
||
|
|
sign = ("-", "+")[offset >= 0]
|
||
|
|
(h, m), s = divmod(abs(offset // 60), 60), abs(offset) % 60
|
||
|
|
|
||
|
|
rep = {
|
||
|
|
"YYYY": "%04d" % year,
|
||
|
|
"YY": "%02d" % (year % 100),
|
||
|
|
"Q": "%d" % ((month - 1) // 3 + 1),
|
||
|
|
"MMMM": month_name[month],
|
||
|
|
"MMM": month_abbr[month],
|
||
|
|
"MM": "%02d" % month,
|
||
|
|
"M": "%d" % month,
|
||
|
|
"DDDD": "%03d" % yearday,
|
||
|
|
"DDD": "%d" % yearday,
|
||
|
|
"DD": "%02d" % day,
|
||
|
|
"D": "%d" % day,
|
||
|
|
"dddd": day_name[weekday],
|
||
|
|
"ddd": day_abbr[weekday],
|
||
|
|
"d": "%d" % weekday,
|
||
|
|
"E": "%d" % (weekday + 1),
|
||
|
|
"HH": "%02d" % hour,
|
||
|
|
"H": "%d" % hour,
|
||
|
|
"hh": "%02d" % ((hour - 1) % 12 + 1),
|
||
|
|
"h": "%d" % ((hour - 1) % 12 + 1),
|
||
|
|
"mm": "%02d" % minute,
|
||
|
|
"m": "%d" % minute,
|
||
|
|
"ss": "%02d" % second,
|
||
|
|
"s": "%d" % second,
|
||
|
|
"S": "%d" % (microsecond // 100000),
|
||
|
|
"SS": "%02d" % (microsecond // 10000),
|
||
|
|
"SSS": "%03d" % (microsecond // 1000),
|
||
|
|
"SSSS": "%04d" % (microsecond // 100),
|
||
|
|
"SSSSS": "%05d" % (microsecond // 10),
|
||
|
|
"SSSSSS": "%06d" % microsecond,
|
||
|
|
"A": ("AM", "PM")[hour // 12],
|
||
|
|
"Z": "%s%02d:%02d%s" % (sign, h, m, (":%09.06f" % s)[: 11 if s % 1 else 3] * (s > 0)),
|
||
|
|
"ZZ": "%s%02d%02d%s" % (sign, h, m, ("%09.06f" % s)[: 10 if s % 1 else 2] * (s > 0)),
|
||
|
|
"zz": tzinfo.tzname(dt) or "",
|
||
|
|
"X": "%d" % timestamp,
|
||
|
|
"x": "%d" % (int(timestamp) * 1000000 + microsecond),
|
||
|
|
}
|
||
|
|
|
||
|
|
def get(m):
|
||
|
|
try:
|
||
|
|
return rep[m.group(0)]
|
||
|
|
except KeyError:
|
||
|
|
return m.group(0)[1:-1]
|
||
|
|
|
||
|
|
return pattern.sub(get, spec)
|
||
|
|
|
||
|
|
|
||
|
|
def aware_now():
|
||
|
|
now = datetime_.now()
|
||
|
|
timestamp = now.timestamp()
|
||
|
|
local = localtime(timestamp)
|
||
|
|
|
||
|
|
try:
|
||
|
|
seconds = local.tm_gmtoff
|
||
|
|
zone = local.tm_zone
|
||
|
|
except AttributeError:
|
||
|
|
# Workaround for Python 3.5.
|
||
|
|
utc_naive = datetime_.fromtimestamp(timestamp, tz=timezone.utc).replace(tzinfo=None)
|
||
|
|
offset = datetime_.fromtimestamp(timestamp) - utc_naive
|
||
|
|
seconds = offset.total_seconds()
|
||
|
|
zone = strftime("%Z")
|
||
|
|
|
||
|
|
tzinfo = timezone(timedelta(seconds=seconds), zone)
|
||
|
|
|
||
|
|
return datetime.combine(now.date(), now.time().replace(tzinfo=tzinfo))
|