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borland_datetime.py
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# -*- coding: utf-8 -*-
#
# # Dobroslav P. Egorov
# # Kotel'nikov Institute of Radio-engineering and Electronics of RAS
# # 2019
#
from __future__ import division
from __future__ import print_function
from typing import Union, Tuple
from pythonlangutil.overload import Overload, signature
from datetime import datetime, date, timedelta
import math
import numpy as np
BEGIN_OF_TIME_BORLAND = date(1899, 12, 30)
BEGIN_OF_TIME_CPP = date(1900, 1, 1)
END_OF_DAY = {'hh': 23, 'mm': 59, 'ss': 59, 'ms': 999}
coeffs = {'hh': 0.041666667, 'mm': 0.000694444, 'ss': 0.000011574, 'ms': 0.000000012}
def Double2TDateTime(double: float, date_0: date = BEGIN_OF_TIME_BORLAND) -> 'TDateTime':
fractionalPart, integerPart = math.modf(double)
DATE = date_0 + timedelta(days=integerPart)
hh = fractionalPart // coeffs['hh']
if hh == 24:
hh = 23
fractionalPart -= hh / 24
if fractionalPart < 0:
return TDateTime(DATE.year, DATE.month, DATE.day,
int(hh), mm=0, ss=0, ms=0, date_0=date_0)
mm = fractionalPart // coeffs['mm']
if mm == 60:
mm = 59
fractionalPart -= mm / 1440
if fractionalPart < 0:
return TDateTime(DATE.year, DATE.month, DATE.day,
int(hh), int(mm), ss=0, ms=0, date_0=date_0)
ss = fractionalPart // coeffs['ss']
if ss == 60:
ss = 59
fractionalPart -= ss / 86400
if fractionalPart < 0:
return TDateTime(DATE.year, DATE.month, DATE.day,
int(hh), int(mm), int(ss), ms=0, date_0=date_0)
ms = np.round(fractionalPart / coeffs['ms'])
if ms == 1000:
ms = 999
return TDateTime(DATE.year, DATE.month, DATE.day,
int(hh), int(mm), int(ss), int(ms), date_0=date_0)
def daterange(start_date: 'TDateTime', stop_date: 'TDateTime'):
"""
:param start_date: Borland format.
:param stop_date: Borland format.
:return: Range of dates as instances of Python "date" class.
"""
start_date = start_date.toPythonDate()
stop_date = stop_date.toPythonDate()
for n in range(int((stop_date - start_date).days) + 1):
yield start_date + timedelta(n)
class TDateTime:
def __init__(self, YYYY: Union[int, str] = 1899, MM: Union[int, str] = 12, DD: Union[int, str] = 30,
hh: Union[int, str] = 0, mm: Union[int, str] = 0, ss: Union[int, str] = 0, ms: Union[int, str] = 0,
date_0: date = BEGIN_OF_TIME_BORLAND):
self.DD, self.MM, self.YYYY, self.hh, self.mm, self.ss, self.ms = \
int(DD), int(MM), int(YYYY), int(hh), int(mm), int(ss), int(ms)
self.date_0 = date_0
def toPythonDate(self) -> date:
return date(self.YYYY, self.MM, self.DD)
@staticmethod
def fromPythonDate(Date: date) -> 'TDateTime':
return TDateTime(Date.year, Date.month, Date.day)
def toPythonDateTime(self) -> datetime:
return datetime(self.YYYY, self.MM, self.DD, self.hh, self.mm, self.ss, self.ms*1000)
@staticmethod
def fromPythonDateTime(DT: datetime) -> 'TDateTime':
return TDateTime(DT.year, DT.month, DT.day, DT.hour, DT.minute, DT.second, int(DT.microsecond/1000))
def toDouble(self) -> float:
integerPart = abs((self.toPythonDate() - self.date_0).days)
fractionalPart = (self.hh * 0.041666667 + self.mm * 0.000694444 +
self.ss * 0.000011574 + self.ms * 0.000000012)
value = integerPart + fractionalPart
return value
@staticmethod
def fromDouble(double: float) -> 'TDateTime':
return Double2TDateTime(double)
def copy(self) -> 'TDateTime':
return TDateTime(self.DD, self.MM, self.YYYY, self.hh, self.mm, self.ss, self.ms, self.date_0)
def strDate(self, year=True, month=True, day=True) -> str:
out = datetime(self.YYYY, self.MM, self.DD)
fs = ''
if day:
fs += "%d"
if month:
if fs:
fs += ":%m"
else:
fs += "%m"
if year:
if fs:
fs += ":%Y"
else:
fs += "%Y"
return out.strftime(fs)
@Overload
@signature('bool', 'bool', 'bool', 'bool')
def strTime(self, hours: bool, minutes: bool, seconds: bool, milliseconds: bool) -> str:
out = datetime(1899, 12, 30,
hour=self.hh, minute=self.mm, second=self.ss)
ms = "%.0f" % self.ms
ms = '{0:0>3}'.format(ms)
fs = ''
if hours:
fs += "%H"
if minutes:
if fs:
fs += ":%M"
else:
fs += "%M"
if seconds:
if fs:
fs += ":%S"
else:
fs += "%S"
result = out.strftime(fs)
if milliseconds:
result += ' ' + ms
return result
@strTime.overload
@signature()
def strTime(self) -> str:
return self.strTime(True, True, True, True)
@strTime.overload
@signature('str')
def strTime(self, timeformat: str) -> str:
return self.strTime(*TDateTime.timeformat_parser(timeformat))
def strSeconds(self) -> str:
return str(self.hh * 3600 + self.mm * 60 + self.ss + int(np.round(self.ms/1000)))
def __str__(self):
out = datetime(self.YYYY, self.MM, self.DD, self.hh, self.mm, self.ss)
ms = "%.0f" % self.ms
ms = '{0:0>3}'.format(ms)
return out.strftime("%d.%m.%Y %H:%M:%S") + ' ' + ms
@staticmethod
def timeformat_parser(timeformat: str) -> Tuple[bool, bool, bool, bool]:
hours, minutes, seconds, milliseconds = False, False, False, False
if 'h' in timeformat:
hours = True
if 'm' in timeformat:
minutes = True
if 's' in timeformat:
seconds = True
if '+' in timeformat:
milliseconds = True
return hours, minutes, seconds, milliseconds
def set(self, YYYY: Union[int, str] = None, MM: Union[int, str] = None, DD: Union[int, str] = None,
hh: Union[int, str] = None, mm: Union[int, str] = None, ss: Union[int, str] = None,
ms: Union[int, str] = None, date_0: date = None) -> None:
if YYYY:
self.YYYY = YYYY
if MM:
self.MM = MM
if DD:
self.DD = DD
if hh:
self.hh = hh
if mm:
self.mm = mm
if ss:
self.ss = ss
if ms:
self.ms = ms
if date_0:
self.date_0 = date_0