Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.11/site-packages/pyfatfs/DosDateTime.py: 39%

1# -*- coding: utf-8 -*- 

2 

3"""Enhancement of datetime for DOS date/time format compatibility.""" 

4from datetime import datetime, time 

5 

6 

7def _convert_to_dos_date(func): 

8 """Convert datetime to DosDateTime.""" 

9 def _wrapper(*args, **kwargs) -> "DosDateTime": 

10 date: datetime = func(*args, **kwargs) 

11 return DosDateTime(*date.timetuple()[:6]) 

12 return _wrapper 

13 

14 

15class DosDateTime(datetime): 

16 """DOS-specific date/time format serialization.""" 

17 

18 now = _convert_to_dos_date(datetime.now) 

19 fromtimestamp = _convert_to_dos_date(datetime.fromtimestamp) 

20 

21 def serialize_date(self) -> int: 

22 """Convert current datetime to FAT date.""" 

23 date = self.year - 1980 << 9 | self.month << 5 | self.day 

24 return date 

25 

26 def serialize_time(self) -> int: 

27 """Convert current datetime to FAT time.""" 

28 time = self.hour << 11 | self.minute << 5 

29 time |= ((self.second - (self.second % 2)) // 2) 

30 return time 

31 

32 @staticmethod 

33 def deserialize_date(dt: int) -> "DosDateTime": 

34 """Convert a DOS date format to a Python object.""" 

35 day = dt & (1 << 5) - 1 

36 month = (dt >> 5) & ((1 << 4) - 1) 

37 year = ((dt >> 9) & (1 << 7) - 1) + 1980 

38 

39 try: 

40 return DosDateTime(year, month, day) 

41 except ValueError: 

42 return DosDateTime(1980, 1, 1) 

43 

44 @staticmethod 

45 def deserialize_time(tm: int) -> time: 

46 """Convert a DOS time format to a Python object.""" 

47 second = (tm & (1 << 5) - 1) * 2 

48 minute = (tm >> 5) & ((1 << 6) - 1) 

49 hour = (tm >> 11) & ((1 << 5) - 1) 

50 

51 try: 

52 return time(hour, minute, second) 

53 except ValueError: 

54 return time(0, 0, 0)