def _calculate_gregorian_offset():
local_epoch = _mktime((1970, 1, 1, 0, 0, 0, 0, 0, 0))
local_epoch_anniversary = _mktime((1971, 1, 1, 0, 0, 0, 0, 0, 0))
local_october_15th = _mktime((1970, 10, 15, 0, 0, 0, 0, 0, 0))
seconds_per_year = local_epoch_anniversary - local_epoch
return ((long(1970 - 1582) * long(seconds_per_year)) +
long(local_october_15th))
def __init__(self, obj, micro_second=0):
if isinstance( obj, _DateTimeStamp ):
self._mktime = _mktime( TOSDB_DateTime._to_struct_time( obj ) )
elif isinstance( obj, _struct_time ):
self._mktime = _mktime(obj)
elif isinstance( obj, TOSDB_DateTime):
self._mktime = obj._mktime
else:
raise TOSDB_DateTimeError( "invalid 'object' passed to __init__" )
def __init__(self, obj, micro_second=0):
if isinstance(obj, _DateTimeStamp):
self._mktime = _mktime(TOSDB_DateTime._to_struct_time(obj))
elif isinstance(obj, _struct_time):
self._mktime = _mktime(obj)
elif isinstance(obj, TOSDB_DateTime):
self._mktime = obj._mktime
else:
raise TOSDB_DateTimeError("invalid 'object' passed to __init__")
def utcoffset(self, dt):
"""datetime -> minutes east of UTC (negative for west of UTC)."""
tt = _localtime(
_mktime((dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second,
dt.weekday(), 0, -1)))
if tt.tm_isdst > 0: return _dstoffset
return _stdoffset
def dst(self, dt):
"""datetime -> DST offset in minutes east of UTC."""
tt = _localtime(
_mktime((dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second,
dt.weekday(), 0, -1)))
if tt.tm_isdst > 0: return _dstdiff
return _zero
def utcoffset(self, dt):
"""datetime -> minutes east of UTC (negative for west of UTC)."""
tt = _localtime(
_mktime((dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second,
dt.weekday(), 0, -1)))
if tt.tm_isdst > 0: return _dstoffset
return _stdoffset
def dst(self, dt):
"""datetime -> DST offset in minutes east of UTC."""
tt = _localtime(
_mktime((dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second,
dt.weekday(), 0, -1)))
if tt.tm_isdst > 0: return _dstdiff
return _zero
def datetime2timestamp(cls, m_datetime):
'''datetime (python object) ==> timestamp
- timestamp indicate miliseconds from 1970/01/01 08:00:00
'''
from time import mktime as _mktime
t = _mktime(m_datetime.timetuple())
return float(t*1000.0) + m_datetime.microsecond/1000.0
def _intervals_since_epoch(self, second, minute, hour, day, month, year):
is_dst = self._tfunc().tm_isdst
sfe = _mktime(
_struct_time(
[year, month, day, hour, minute, second, 0, 0, is_dst]))
if sfe % self._isec:
raise TOSDB_Error("invalid interval constructed")
return int(sfe // self._isec)
def datetime_to_time(date, time):
"""Take the date and time 4-tuples and return the time in seconds since
the epoch as a floating point number."""
if (255 in date) or (255 in time):
raise RuntimeError("specific date and time required")
time_tuple = (
date[0]+1900, date[1], date[2],
time[0], time[1], time[2],
0, 0, -1,
)
return _mktime(time_tuple)
def mktime(t9):
"""
Call L{_mktime}, and if it raises L{OverflowError}, catch it and raise
SkipTest instead.
@param t9: A time as a 9-item tuple.
@type t9: L{tuple}
@return: A timestamp.
@rtype: L{float}
"""
try:
return _mktime(t9)
except OverflowError:
raise SkipTest(
"Platform cannot construct time zone for {0!r}"
.format(t9)
)
def tzname(self, dt):
"""datetime -> string name of time zone."""
tt = _localtime(_mktime((dt.year, dt.month, dt.day,
dt.hour, dt.minute, dt.second, dt.weekday(), 0, -1)))
return _time.tzname[tt.tm_isdst > 0]
def _gettimeofday():
d=_now()
return int(_mktime(d.timetuple())),d.microsecond
def _intervals_since_epoch(self, second, minute, hour, day, month, year):
is_dst = self._tfunc().tm_isdst
sfe = _mktime(_struct_time([year,month,day,hour,minute,second,0,0,is_dst]))
if sfe % self._isec:
raise TOSDB_Error("invalid interval constructed")
return int(sfe // self._isec)
def _gettimeofday():
d = _now()
return int(_mktime(d.timetuple())), d.microsecond
def _calculate_gregorian_offset():
local_epoch = _mktime((1970, 1, 1, 0, 0, 0, 0, 0, 0))
local_epoch_anniversary = _mktime((1971, 1, 1, 0, 0, 0, 0, 0, 0))
local_october_15th = _mktime((1970, 10, 15, 0, 0, 0, 0, 0, 0))
seconds_per_year = local_epoch_anniversary - local_epoch
return (long(1970 - 1582) * long(seconds_per_year)) + long(local_october_15th)
