Created
September 28, 2013 00:52
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CodePlex Issue #18106 Plain Text Attachments
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import time | |
import datetime | |
import sys | |
_ordinal_1899_12_31=datetime.date(1899,12,31).toordinal()-1 | |
def COMDateFromTuple(YMDHMSmsTuple): | |
d = datetime.date(YMDHMSmsTuple[0],YMDHMSmsTuple[1],YMDHMSmsTuple[2]) | |
integerPart = d.toordinal() - _ordinal_1899_12_31 | |
ms = ((YMDHMSmsTuple[3]*60 \ | |
+YMDHMSmsTuple[4])*60 \ | |
+YMDHMSmsTuple[5])*1000 \ | |
+YMDHMSmsTuple[6] | |
fractPart = ms / 86400000.0 | |
return integerPart + fractPart | |
def DateTupleFromCOMDate(comDate): | |
'Returns ticks since 1970' | |
fcomDate = float(comDate) | |
secondsperday=86400 # 24*60*60 | |
#ComDate is number of days since 1899-12-31 | |
t=time.gmtime(secondsperday*(fcomDate-25569.0)) | |
return t #year,month,day,hour,minute,second,weekday,julianday,daylightsaving=t | |
def DateTimeFromCOMDate(comDate): | |
#ComDate is number of days since 1899-12-31 | |
fComDate=float(comDate) | |
millisecondsperday=86400000 # 24*60*60*1000 | |
integerPart = int(fComDate) | |
floatpart=fComDate-integerPart | |
if floatpart == 0.0: | |
return datetime.date.fromordinal(integerPart + _ordinal_1899_12_31) | |
dte=datetime.datetime.fromordinal(integerPart + _ordinal_1899_12_31) \ | |
+ datetime.timedelta(milliseconds=floatpart*millisecondsperday) | |
return dte | |
print sys.version | |
tt = (2002,6,28,15,20,01, 4,31+28+31+30+31+28,-1) | |
print 'Starting with tt =',tt | |
cd1 = COMDateFromTuple(tt) | |
print 'COMDate=',cd1 | |
print 'mktime=',time.mktime(tt) | |
print 'using time.gmtime=',DateTupleFromCOMDate(cd1) | |
print 'using datetime = ',DateTimeFromCOMDate(cd1) | |
try: | |
import System | |
Iron = True | |
except ImportError: | |
Iron = False | |
if Iron: | |
d = System.DateTime.FromOADate(cd1) | |
print 'using System = ',d |
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