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Removing some ugliness from MI_Datetime
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John Kordich committed Jun 28, 2016
1 parent 8b374c1 commit 9f348f2
Showing 1 changed file with 51 additions and 56 deletions.
107 changes: 51 additions & 56 deletions src/Microsoft.Management.Infrastructure/Native/Structures/MI_Datetime.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -19,74 +19,73 @@ internal struct MI_Datetime

internal object ConvertToNativeLayer()
{
MI_Datetime datetime = this;
if (datetime.isTimestamp)
if (this.isTimestamp)
{
// "Now" value defined in line 1934, page 53 of DSP0004, version 2.6.0
if ((datetime.timestamp.year == 0) &&
(datetime.timestamp.month == 1) &&
(datetime.timestamp.day == 1) &&
(datetime.timestamp.hour == 0) &&
(datetime.timestamp.minute == 0) &&
(datetime.timestamp.second == 0) &&
(datetime.timestamp.microseconds == 0) &&
(datetime.timestamp.utc == 720))
if ((this.timestamp.year == 0) &&
(this.timestamp.month == 1) &&
(this.timestamp.day == 1) &&
(this.timestamp.hour == 0) &&
(this.timestamp.minute == 0) &&
(this.timestamp.second == 0) &&
(this.timestamp.microseconds == 0) &&
(this.timestamp.utc == 720))
{
return DateTime.Now;
}
// "Infinite past" value defined in line 1935, page 54 of DSP0004, version 2.6.0
else if ((datetime.timestamp.year == 0) &&
(datetime.timestamp.month == 1) &&
(datetime.timestamp.day == 1) &&
(datetime.timestamp.hour == 0) &&
(datetime.timestamp.minute == 0) &&
(datetime.timestamp.second == 0) &&
(datetime.timestamp.microseconds == 999999) &&
(datetime.timestamp.utc == 720))
else if ((this.timestamp.year == 0) &&
(this.timestamp.month == 1) &&
(this.timestamp.day == 1) &&
(this.timestamp.hour == 0) &&
(this.timestamp.minute == 0) &&
(this.timestamp.second == 0) &&
(this.timestamp.microseconds == 999999) &&
(this.timestamp.utc == 720))
{
return DateTime.MinValue;
}
// "Infinite future" value defined in line 1936, page 54 of DSP0004, version 2.6.0
else if ((datetime.timestamp.year == 9999) &&
(datetime.timestamp.month == 12) &&
(datetime.timestamp.day == 31) &&
(datetime.timestamp.hour == 11) &&
(datetime.timestamp.minute == 59) &&
(datetime.timestamp.second == 59) &&
(datetime.timestamp.microseconds == 999999) &&
(datetime.timestamp.utc == (-720)))
else if ((this.timestamp.year == 9999) &&
(this.timestamp.month == 12) &&
(this.timestamp.day == 31) &&
(this.timestamp.hour == 11) &&
(this.timestamp.minute == 59) &&
(this.timestamp.second == 59) &&
(this.timestamp.microseconds == 999999) &&
(this.timestamp.utc == (-720)))
{
return DateTime.MaxValue;
}
else
{
#if !_CORECLR
DateTime managedUtcDateTime = new DateTime(
(int)datetime.timestamp.year,
(int)datetime.timestamp.month,
(int)datetime.timestamp.day,
(int)datetime.timestamp.hour,
(int)datetime.timestamp.minute,
(int)datetime.timestamp.second,
(int)datetime.timestamp.microseconds / 1000,
(int)this.timestamp.year,
(int)this.timestamp.month,
(int)this.timestamp.day,
(int)this.timestamp.hour,
(int)this.timestamp.minute,
(int)this.timestamp.second,
(int)this.timestamp.microseconds / 1000,
CultureInfo.InvariantCulture.Calendar,
DateTimeKind.Utc);
#else
Calendar myCalendar = CultureInfo.InvariantCulture.Calendar;
DateTime managedDateTime = myCalendar.ToDateTime(
(int)datetime.timestamp.year,
(int)datetime.timestamp.month,
(int)datetime.timestamp.day,
(int)datetime.timestamp.hour,
(int)datetime.timestamp.minute,
(int)datetime.timestamp.second,
(int)datetime.timestamp.microseconds / 1000);
(int)this.timestamp.year,
(int)this.timestamp.month,
(int)this.timestamp.day,
(int)this.timestamp.hour,
(int)this.timestamp.minute,
(int)this.timestamp.second,
(int)this.timestamp.microseconds / 1000);
DateTime managedUtcDateTime = DateTime.SpecifyKind(managedDateTime, DateTimeKind.Utc);

#endif
long microsecondsUnaccounted = datetime.timestamp.microseconds % 1000;
long microsecondsUnaccounted = this.timestamp.microseconds % 1000;
managedUtcDateTime = managedUtcDateTime.AddTicks(microsecondsUnaccounted * 10); // since 1 microsecond == 10 ticks
managedUtcDateTime = managedUtcDateTime.AddMinutes(-(datetime.timestamp.utc));
managedUtcDateTime = managedUtcDateTime.AddMinutes(-(this.timestamp.utc));


#if !_CORECLR
Expand All @@ -103,19 +102,19 @@ internal object ConvertToNativeLayer()
}
else
{
if (TimeSpan.MaxValue.TotalDays < datetime.interval.days)
if (TimeSpan.MaxValue.TotalDays < this.interval.days)
{
return TimeSpan.MaxValue;
}

try
{
TimeSpan managedTimeSpan = new TimeSpan(
(int)datetime.interval.days,
(int)datetime.interval.hours,
(int)datetime.interval.minutes,
(int)datetime.interval.seconds,
(int)datetime.interval.microseconds / 1000);
(int)this.interval.days,
(int)this.interval.hours,
(int)this.interval.minutes,
(int)this.interval.seconds,
(int)this.interval.microseconds / 1000);
long microsecondsUnaccounted = datetime.interval.microseconds % 1000;
TimeSpan ticksUnaccountedTimeSpan = new TimeSpan(microsecondsUnaccounted * 10); // since 1 microsecond == 10 ticks

Expand All @@ -131,10 +130,8 @@ internal object ConvertToNativeLayer()

internal MI_Datetime(TimeSpan interval)
{
this.timestamp.utc = 0;
this.timestamp.year = this.timestamp.month = this.timestamp.day = this.timestamp.hour = this.timestamp.minute = this.timestamp.second = this.timestamp.microseconds = 0;
this.interval.days = this.interval.hours = this.interval.minutes = this.interval.seconds = this.interval.microseconds = 0;
this.interval.__padding1 = this.interval.__padding2 = this.interval.__padding3 = 0;
this.timestamp = new MI_Timestamp();
this.interval = new MI_Interval();

if (interval.Equals(TimeSpan.MaxValue))
{
Expand All @@ -160,10 +157,8 @@ internal MI_Datetime(TimeSpan interval)

internal MI_Datetime(DateTime datetime)
{
this.timestamp.utc = 0;
this.timestamp.year = this.timestamp.month = this.timestamp.day = this.timestamp.hour = this.timestamp.minute = this.timestamp.second = this.timestamp.microseconds = 0;
this.interval.days = this.interval.hours = this.interval.minutes = this.interval.seconds = this.interval.microseconds = 0;
this.interval.__padding1 = this.interval.__padding2 = this.interval.__padding3 = 0;
this.timestamp = new MI_Timestamp();
this.interval = new MI_Interval();

if (datetime.Equals(DateTime.MaxValue))
{
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