time.py

fromutimeimport*
fromcollectionsimportnamedtuple
importstruct
importuctypes
importffi
importffilib
importarray

libc=ffilib.libc()

# struct tm *gmtime(const time_t *timep);
# struct tm *localtime(const time_t *timep);
# size_t strftime(char *s, size_t max, const char *format,
# const struct tm *tm);
gmtime_=libc.func("P", "gmtime", "P")
localtime_=libc.func("P", "localtime", "P")
strftime_=libc.func("i", "strftime", "sisP")
mktime_=libc.func("i", "mktime", "P")

_struct_time=namedtuple(
"struct_time",
 [
"tm_year",
"tm_mon",
"tm_mday",
"tm_hour",
"tm_min",
"tm_sec",
"tm_wday",
"tm_yday",
"tm_isdst",
 ],
)


def_tuple_to_c_tm(t):
returnstruct.pack(
"@iiiiiiiii", t[5], t[4], t[3], t[2], t[1] -1, t[0] -1900, (t[6] +1) %7, t[7] -1, t[8]
 )


def_c_tm_to_tuple(tm):
t=struct.unpack("@iiiiiiiii", tm)
return_struct_time(
t[5] +1900, t[4] +1, t[3], t[2], t[1], t[0], (t[6] -1) %7, t[7] +1, t[8]
 )


defstruct_time(tm):
return_struct_time(*tm)


defstrftime(format, t=None):
iftisNone:
t=localtime()

buf=bytearray(32)
l=strftime_(buf, 32, format, _tuple_to_c_tm(t))
returnstr(buf[:l], "utf-8")


deflocaltime(t=None):
iftisNone:
t=time()

t=int(t)
a=struct.pack("l", t)
tm_p=localtime_(a)
return_c_tm_to_tuple(uctypes.bytearray_at(tm_p, 36))


defgmtime(t=None):
iftisNone:
t=time()

t=int(t)
a=struct.pack("l", t)
tm_p=gmtime_(a)
return_c_tm_to_tuple(uctypes.bytearray_at(tm_p, 36))


defmktime(tt):
returnmktime_(_tuple_to_c_tm(tt))


defperf_counter():
returntime()


defprocess_time():
returnclock()


daylight=0
timezone=0