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RtlCutoverTimeToSystemTime(): The 4th argument determines whether the cutover time of the current year or the next cutover time is calculated.

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svn path=/trunk/; revision=12864
This commit is contained in:
Eric Kohl 2005-01-07 12:58:46 +00:00
parent d6f646a37f
commit a366210998
2 changed files with 55 additions and 39 deletions
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2
reactos/include/ntos/rtl.h
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@ -882,7 +882,7 @@ BOOLEAN STDCALL
RtlCutoverTimeToSystemTime(IN PTIME_FIELDS CutoverTimeFields, RtlCutoverTimeToSystemTime(IN PTIME_FIELDS CutoverTimeFields,
OUT PLARGE_INTEGER SystemTime, OUT PLARGE_INTEGER SystemTime,
IN PLARGE_INTEGER CurrentTime, IN PLARGE_INTEGER CurrentTime,
IN ULONG Unknown); IN BOOLEAN ThisYearsCutoverOnly);
NTSTATUS STDCALL NTSTATUS STDCALL
RtlDecompressBuffer(IN USHORT CompressionFormat, RtlDecompressBuffer(IN USHORT CompressionFormat,

88
reactos/lib/rtl/time.c
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@ -74,7 +74,7 @@ BOOLEAN STDCALL
RtlCutoverTimeToSystemTime(IN PTIME_FIELDS CutoverTimeFields, RtlCutoverTimeToSystemTime(IN PTIME_FIELDS CutoverTimeFields,
OUT PLARGE_INTEGER SystemTime, OUT PLARGE_INTEGER SystemTime,
IN PLARGE_INTEGER CurrentTime, IN PLARGE_INTEGER CurrentTime,
IN ULONG Unknown) IN BOOLEAN ThisYearsCutoverOnly)
{ {
TIME_FIELDS AdjustedTimeFields; TIME_FIELDS AdjustedTimeFields;
TIME_FIELDS CurrentTimeFields; TIME_FIELDS CurrentTimeFields;
@ -82,6 +82,7 @@ RtlCutoverTimeToSystemTime(IN PTIME_FIELDS CutoverTimeFields,
LARGE_INTEGER CutoverSystemTime; LARGE_INTEGER CutoverSystemTime;
CSHORT MonthLength; CSHORT MonthLength;
CSHORT Days; CSHORT Days;
BOOLEAN NextYearsCutover = FALSE;
/* Check fixed cutover time */ /* Check fixed cutover time */
if (CutoverTimeFields->Year != 0) if (CutoverTimeFields->Year != 0)
@ -105,45 +106,60 @@ RtlCutoverTimeToSystemTime(IN PTIME_FIELDS CutoverTimeFields,
RtlTimeToTimeFields(CurrentTime, &CurrentTimeFields); RtlTimeToTimeFields(CurrentTime, &CurrentTimeFields);
/* Compute the cutover time of the first day of the current month */ while (TRUE)
AdjustedTimeFields.Year = CurrentTimeFields.Year;
AdjustedTimeFields.Month = CutoverTimeFields->Month;
AdjustedTimeFields.Day = 1;
AdjustedTimeFields.Hour = CutoverTimeFields->Hour;
AdjustedTimeFields.Minute = CutoverTimeFields->Minute;
AdjustedTimeFields.Second = CutoverTimeFields->Second;
AdjustedTimeFields.Milliseconds = CutoverTimeFields->Milliseconds;
if (!RtlTimeFieldsToTime(&AdjustedTimeFields, &CutoverSystemTime))
return FALSE;
RtlTimeToTimeFields(&CutoverSystemTime, &CutoverSystemTimeFields);
/* Adjust day to first matching weekday */
if (CutoverSystemTimeFields.Weekday != CutoverTimeFields->Weekday)
{ {
if (CutoverSystemTimeFields.Weekday < CutoverTimeFields->Weekday) /* Compute the cutover time of the first day of the current month */
Days = CutoverTimeFields->Weekday - CutoverSystemTimeFields.Weekday; AdjustedTimeFields.Year = CurrentTimeFields.Year;
else if (NextYearsCutover == TRUE)
Days = DAYSPERWEEK - (CutoverSystemTimeFields.Weekday - CutoverTimeFields->Weekday); AdjustedTimeFields.Year++;
AdjustedTimeFields.Day += Days; AdjustedTimeFields.Month = CutoverTimeFields->Month;
AdjustedTimeFields.Day = 1;
AdjustedTimeFields.Hour = CutoverTimeFields->Hour;
AdjustedTimeFields.Minute = CutoverTimeFields->Minute;
AdjustedTimeFields.Second = CutoverTimeFields->Second;
AdjustedTimeFields.Milliseconds = CutoverTimeFields->Milliseconds;
if (!RtlTimeFieldsToTime(&AdjustedTimeFields, &CutoverSystemTime))
return FALSE;
RtlTimeToTimeFields(&CutoverSystemTime, &CutoverSystemTimeFields);
/* Adjust day to first matching weekday */
if (CutoverSystemTimeFields.Weekday != CutoverTimeFields->Weekday)
{
if (CutoverSystemTimeFields.Weekday < CutoverTimeFields->Weekday)
Days = CutoverTimeFields->Weekday - CutoverSystemTimeFields.Weekday;
else
Days = DAYSPERWEEK - (CutoverSystemTimeFields.Weekday - CutoverTimeFields->Weekday);
AdjustedTimeFields.Day += Days;
}
/* Adjust the number of weeks */
if (CutoverTimeFields->Day > 1)
{
Days = DAYSPERWEEK * (CutoverTimeFields->Day - 1);
MonthLength = MonthLengths[IsLeapYear(AdjustedTimeFields.Year)][AdjustedTimeFields.Month - 1];
if ((AdjustedTimeFields.Day + Days) > MonthLength)
Days -= DAYSPERWEEK;
AdjustedTimeFields.Day += Days;
}
if (!RtlTimeFieldsToTime(&AdjustedTimeFields, &CutoverSystemTime))
return FALSE;
if (ThisYearsCutoverOnly == TRUE ||
NextYearsCutover == TRUE ||
CutoverSystemTime.QuadPart >= CurrentTime->QuadPart)
{
break;
}
NextYearsCutover = TRUE;
} }
/* Adjust the number of weeks */
if (CutoverTimeFields->Day > 1)
{
Days = DAYSPERWEEK * (CutoverTimeFields->Day - 1);
MonthLength = MonthLengths[IsLeapYear(AdjustedTimeFields.Year)][AdjustedTimeFields.Month - 1];
if ((AdjustedTimeFields.Day + Days) > MonthLength)
Days -= DAYSPERWEEK;
AdjustedTimeFields.Day += Days;
}
if (!RtlTimeFieldsToTime(&AdjustedTimeFields, &CutoverSystemTime))
return FALSE;
SystemTime->QuadPart = CutoverSystemTime.QuadPart; SystemTime->QuadPart = CutoverSystemTime.QuadPart;
return TRUE; return TRUE;