private void ParseMeridianAndSetHour(ClockToken[] dt, ref System.Int32 parsePos, TclDateTime calendar, int hour)
// hour value (1-12 or 0-23) to set.
{
int pos = parsePos;
int hourField;
if (pos < dt.Length && dt[pos].is_Renamed(ClockToken.MERIDIAN))
{
// SupportClass.CalendarManager.manager.Set(calendar, SupportClass.CalendarManager.AM_PM, dt[pos].Int);
parsePos = pos + 1;
hourField = SupportClass.CalendarManager.HOUR;
}
else
{
hourField = SupportClass.CalendarManager.HOUR_OF_DAY;
}
if (hourField == SupportClass.CalendarManager.HOUR && hour == 12)
{
hour = 0;
}
calendar.hour = hour;
}
private bool ParseIso(ClockToken[] dt, ref System.Int32 parsePos, TclDateTime calendar)
// calendar object to set
{
int pos = parsePos;
if (pos + 6 < dt.Length && dt[pos].IsoBase && dt[pos + 1].is_Renamed(ClockToken.ZONE) && dt[pos + 2].UNumber && dt[pos + 3].is_Renamed(':') && dt[pos + 4].UNumber && dt[pos + 5].is_Renamed(':') && dt[pos + 6].UNumber)
{
calendar.day = dt[pos].Int % 100;
calendar.month = (dt[pos].Int % 10000) / 100;
calendar.year = dt[pos].Int / 10000;
calendar.hour = dt[pos + 2].Int;
calendar.minute = dt[pos + 4].Int;
calendar.second = dt[pos + 6].Int;
parsePos = pos + 7;
return true;
}
if (pos + 2 < dt.Length && dt[pos].IsoBase && dt[pos + 1].is_Renamed(ClockToken.ZONE) && dt[pos + 1].Zone.GetUtcOffset(calendar.dateTime).Hours == (-7) * MILLIS_PER_HOUR && dt[pos + 2].IsoBase)
{
calendar.day = dt[pos].Int % 100;
calendar.month = (dt[pos].Int % 10000) / 100;
calendar.year = dt[pos].Int / 10000;
calendar.hour = dt[pos + 2].Int / 10000;
calendar.minute = (dt[pos + 2].Int % 10000) / 100;
calendar.second = dt[pos + 2].Int % 100;
parsePos = pos + 3;
return true;
}
if (pos + 1 < dt.Length && dt[pos].IsoBase && dt[pos + 1].IsoBase)
{
calendar.day = dt[pos].Int % 100;
calendar.month = (dt[pos].Int % 10000) / 100;
calendar.year = dt[pos].Int / 10000;
calendar.hour = dt[pos + 1].Int / 10000;
calendar.minute = (dt[pos + 1].Int % 10000) / 100;
calendar.second = dt[pos + 1].Int % 100;
parsePos = pos + 2;
return true;
}
return false;
}
private bool ParseTrek(ClockToken[] dt, ref System.Int32 parsePos, TclDateTime calendar)
// calendar object to set
{
int pos = parsePos;
if (pos + 3 < dt.Length && dt[pos].is_Renamed(ClockToken.STARDATE) && dt[pos + 1].UNumber && dt[pos + 2].is_Renamed('.') && dt[pos + 3].UNumber)
{
GregorianCalendar gcal = new GregorianCalendar();
int trekYear = dt[pos + 1].Int / 1000 + 2323 - 377;
int trekDay = 1 + ((dt[pos + 1].Int % 1000) * (gcal.IsLeapYear(trekYear) ? 366 : 365)) / 1000;
int trekSeconds = dt[pos + 3].Int * 144 * 60;
calendar.year = trekYear;
calendar.dateTime = gcal.AddDays(calendar.dateTime, trekDay);
calendar.second = trekSeconds;
parsePos = pos + 4;
return true;
}
return false;
}
private bool ParseDate(ClockToken[] dt, ref System.Int32 parsePos, TclDateTime calendar)
// calendar object to set
{
int pos = parsePos;
if (pos + 4 < dt.Length && dt[pos].UNumber && dt[pos + 1].is_Renamed('/') && dt[pos + 2].UNumber && dt[pos + 3].is_Renamed('/') && dt[pos + 4].UNumber)
{
calendar.day = dt[pos + 2].Int;
calendar.month = dt[pos].Int;
calendar.year = dt[pos + 4].Int;
parsePos = pos + 5;
return true;
}
if (pos + 4 < dt.Length && dt[pos].UNumber && dt[pos + 1].is_Renamed('-') && dt[pos + 2].is_Renamed(ClockToken.MONTH) && dt[pos + 3].is_Renamed('-') && dt[pos + 4].UNumber)
{
calendar.year = dt[pos + 4].Int;
calendar.month = dt[pos + 2].Int;
calendar.day = dt[pos].Int;
parsePos = pos + 5;
return true;
}
if (pos + 4 < dt.Length && dt[pos].UNumber && dt[pos + 1].is_Renamed('-') && dt[pos + 2].UNumber && dt[pos + 3].is_Renamed('-') && dt[pos + 4].UNumber)
{
calendar.year = dt[pos].Int;
calendar.month = dt[pos + 2].Int;
calendar.day = dt[pos + 4].Int;
parsePos = pos + 5;
return true;
}
if (pos + 3 < dt.Length && dt[pos].is_Renamed(ClockToken.MONTH) && dt[pos + 1].UNumber && dt[pos + 2].is_Renamed(',') && dt[pos + 3].UNumber)
{
calendar.day = dt[pos + 1].Int;
calendar.month = dt[pos].Int;
calendar.year = dt[pos + 3].Int;
parsePos = pos + 4;
return true;
}
if (pos + 2 < dt.Length && dt[pos].UNumber && dt[pos + 1].is_Renamed('/') && dt[pos + 2].UNumber)
{
calendar.day = dt[pos + 2].Int;
calendar.month = dt[pos].Int;
parsePos = pos + 3;
return true;
}
if (pos + 2 < dt.Length && dt[pos].UNumber && dt[pos + 1].is_Renamed(ClockToken.MONTH) && dt[pos + 2].UNumber)
{
calendar.day = dt[pos].Int;
calendar.month = dt[pos + 1].Int;
calendar.year = dt[pos + 2].Int;
parsePos = pos + 3;
return true;
}
if (pos + 1 < dt.Length && dt[pos].is_Renamed(ClockToken.MONTH) && dt[pos + 1].UNumber)
{
calendar.day = dt[pos + 1].Int;
calendar.month = dt[pos].Int;
parsePos = pos + 2;
return true;
}
if (pos + 1 < dt.Length && dt[pos].UNumber && dt[pos + 1].is_Renamed(ClockToken.MONTH))
{
calendar.day = dt[pos].Int;
calendar.month = dt[pos + 1].Int;
parsePos = pos + 2;
return true;
}
if (pos < dt.Length && dt[pos].IsoBase)
{
calendar.day = dt[pos].Int % 100;
calendar.month = (dt[pos].Int % 10000) / 100;
calendar.year = dt[pos].Int / 10000;
parsePos = pos + 1;
return true;
}
if (pos < dt.Length && dt[pos].is_Renamed(ClockToken.EPOCH))
{
calendar.day = 1;
calendar.month = 0;
calendar.year = EPOCH_YEAR;
parsePos = pos + 1;
return true;
}
return false;
}
private bool ParseNumber(ClockToken[] dt, ref System.Int32 parsePos, TclDateTime calendar, bool mayBeYear)
// number is considered to be year?
{
int pos = parsePos;
if (pos < dt.Length && dt[pos].UNumber)
{
parsePos = pos + 1;
if (mayBeYear)
{
calendar.year = dt[pos].Int;
}
else
{
calendar.hour = dt[pos].Int / 100;
calendar.minute = dt[pos].Int % 100;
calendar.second = 0;
}
return true;
}
return false;
}
private bool ParseZone(ClockToken[] dt, ref System.Int32 parsePos, TclDateTime calendar)
// calendar object to set
{
int pos = parsePos;
if (pos + 1 < dt.Length && dt[pos].is_Renamed(ClockToken.ZONE) && dt[pos + 1].is_Renamed(ClockToken.DST))
{
// calendar.setTimeZone(dt[pos].Zone);
parsePos = pos + 2;
return true;
}
if (pos < dt.Length && dt[pos].is_Renamed(ClockToken.ZONE))
{
// calendar.setTimeZone(dt[pos].Zone);
parsePos = pos + 1;
return true;
}
if (pos < dt.Length && dt[pos].is_Renamed(ClockToken.DAYZONE))
{
// calendar.setTimeZone(dt[pos].Zone);
parsePos = pos + 1;
return true;
}
return false;
}
private bool ParseTime(ClockToken[] dt, ref System.Int32 parsePos, TclDateTime calendar)
// calendar object to set
{
int pos = parsePos;
if (pos + 6 < dt.Length && dt[pos].UNumber && dt[pos + 1].is_Renamed(':') && dt[pos + 2].UNumber && dt[pos + 3].is_Renamed(':') && dt[pos + 4].UNumber && dt[pos + 5].is_Renamed('-') && dt[pos + 6].UNumber)
{
ClockToken zone = GetTimeZoneFromRawOffset((-dt[pos + 6].Int) / 100);
if (zone != null)
{
calendar.hour = dt[pos].Int;
calendar.minute = dt[pos + 2].Int;
calendar.second = dt[pos + 4].Int;
// TODO
// calendar.setTimeZone(zone.Zone);
parsePos = pos + 7;
return true;
}
}
if (pos + 4 < dt.Length && dt[pos].UNumber && dt[pos + 1].is_Renamed(':') && dt[pos + 2].UNumber && dt[pos + 3].is_Renamed(':') && dt[pos + 4].UNumber)
{
parsePos = pos + 5;
ParseMeridianAndSetHour(dt, ref parsePos, calendar, dt[pos].Int);
calendar.minute = dt[pos + 2].Int;
calendar.second = dt[pos + 4].Int;
return true;
}
if (pos + 4 < dt.Length && dt[pos].UNumber && dt[pos + 1].is_Renamed(':') && dt[pos + 2].UNumber && dt[pos + 3].is_Renamed('-') && dt[pos + 4].UNumber)
{
ClockToken zone = GetTimeZoneFromRawOffset((-dt[pos + 4].Int) / 100);
if (zone != null)
{
calendar.hour = dt[pos].Int;
calendar.minute = dt[pos + 2].Int;
// calendar.setTimeZone(zone.Zone);
parsePos = pos + 5;
return true;
}
}
if (pos + 2 < dt.Length && dt[pos].UNumber && dt[pos + 1].is_Renamed(':') && dt[pos + 2].UNumber)
{
parsePos = pos + 3;
ParseMeridianAndSetHour(dt, ref parsePos, calendar, dt[pos].Int);
calendar.minute = dt[pos + 2].Int;
return true;
}
if (pos + 1 < dt.Length && dt[pos].UNumber && dt[pos + 1].is_Renamed(ClockToken.MERIDIAN))
{
parsePos = pos + 1;
ParseMeridianAndSetHour(dt, ref parsePos, calendar, dt[pos].Int);
return true;
}
return false;
}
private System.DateTime GetDate(string dateString, System.DateTime baseDate, bool useGMT)
{
if (useGMT)
{
baseDate = baseDate.ToUniversalTime();
}
TclDateTime calendar = new TclDateTime();
calendar.dateTime = baseDate;
calendar.hour = 0;
calendar.minute = 0;
calendar.second = 0;
calendar.millisecond = 0;
ClockToken[] dt = GetTokens(dateString, false);
System.Int32 parsePos = 0;
ClockRelTimespan diff = new ClockRelTimespan();
int hasTime = 0;
int hasZone = 0;
int hasDate = 0;
int hasDay = 0;
int hasOrdMonth = 0;
int hasRel = 0;
while (parsePos < dt.Length)
{
if (ParseTime(dt, ref parsePos, calendar))
{
hasTime++;
}
else if (ParseZone(dt, ref parsePos, calendar))
{
hasZone++;
}
else if (ParseIso(dt, ref parsePos, calendar))
{
hasDate++;
}
else if (ParseDate(dt, ref parsePos, calendar))
{
hasDate++;
}
else if (ParseDay(dt, ref parsePos, diff))
{
hasDay++;
}
else if (ParseOrdMonth(dt, ref parsePos, diff))
{
hasOrdMonth++;
}
else if (ParseRelSpec(dt, ref parsePos, diff))
{
hasRel++;
}
else if (ParseNumber(dt, ref parsePos, calendar, hasDate > 0 && hasTime > 0 && hasRel == 0))
{
if (hasDate == 0 || hasTime == 0 || hasRel > 0)
{
hasTime++;
}
}
else if (ParseTrek(dt, ref parsePos, calendar))
{
hasDate++;
hasTime++;
}
else
{
goto failed;
}
}
if (hasTime > 1 || hasZone > 1 || hasDate > 1 || hasDay > 1 || hasOrdMonth > 1)
{
goto failed;
}
// The following line handles years that are specified using
// only two digits. The line of code below implements a policy
// defined by the X/Open workgroup on the millinium rollover.
// Note: some of those dates may not actually be valid on some
// platforms. The POSIX standard startes that the dates 70-99
// shall refer to 1970-1999 and 00-38 shall refer to 2000-2038.
// This later definition should work on all platforms.
int thisYear = calendar.year;
if (thisYear < 100)
{
if (thisYear >= 69)
{
calendar.year = thisYear + 1900;
}
else
{
calendar.year = thisYear + 2000;
}
}
if (hasRel > 0)
{
if (hasTime == 0 && hasDate == 0 && hasDay == 0)
{
calendar.dateTime = baseDate;
}
// Certain JDK implementations are buggy WRT DST.
// Work around this issue by adding a day instead
// of a days worth of seconds.
int seconds_in_day = (60 * 60 * 24);
int seconds = diff.Seconds;
bool negative_seconds = (seconds < 0);
int days = 0;
if (negative_seconds)
seconds *= (-1);
while (seconds >= seconds_in_day)
{
seconds -= seconds_in_day;
days++;
}
if (negative_seconds)
{
seconds *= (-1);
days *= (-1);
}
if (days != 0)
{
// calendar.add(SupportClass.CalendarManager.DATE, days);
}
if (seconds != 0)
{
// calendar.add(SupportClass.CalendarManager.SECOND, seconds);
}
// calendar.add(SupportClass.CalendarManager.MONTH, diff.Months);
}
if (hasDay > 0 && hasDate == 0)
{
SetWeekday(calendar, diff);
}
if (hasOrdMonth > 0)
{
SetOrdMonth(calendar, diff);
}
try
{
return calendar.dateTime;
}
catch (Exception)
{
throw new FormatException();
}
failed:
throw new FormatException();
}
private void SetOrdMonth(TclDateTime calendar, ClockRelTimespan diff)
// time difference to evaluate
{
int month = diff.Months;
int ordMonth = diff.OrdMonth;
// calendar.add(SupportClass.CalendarManager.MONTH, 1); /* we want to get the next month... */
// while (SupportClass.CalendarManager.manager.Get(calendar, SupportClass.CalendarManager.MONTH) != month)
// {
// calendar.add(SupportClass.CalendarManager.MONTH, 1);
// }
// if (ordMonth > 1)
// {
// calendar.add(SupportClass.CalendarManager.YEAR, ordMonth - 1);
// }
calendar.day = 1;
calendar.hour = 0;
calendar.minute = 0;
calendar.second = 0;
}
private void SetWeekday(TclDateTime calendar, ClockRelTimespan diff)
// time difference to evaluate
{
int weekday = diff.getWeekday();
int dayOrdinal = diff.DayOrdinal;
// ATK
// while (SupportClass.CalendarManager.manager.Get(calendar, SupportClass.CalendarManager.DAY_OF_WEEK) != weekday)
// {
//
// calendar.add(SupportClass.CalendarManager.DATE, 1);
// }
// if (dayOrdinal > 1)
// {
//
// calendar.add(SupportClass.CalendarManager.DATE, 7 * (dayOrdinal - 1));
// }
}
