/// <summary>
/// Gets the DafYomi for the given day
/// </summary>
/// <param name="absoluteDate"></param>
/// <returns></returns>
private static Daf GetSingleDaf(int absoluteDate)
{
int dafcnt = 40;
int cno, dno, osday, nsday, total, count, j, blatt;
osday = JewishDateCalculations.GetAbsoluteFromGregorianDate(1923, 9, 11);
nsday = JewishDateCalculations.GetAbsoluteFromGregorianDate(1975, 6, 24);
/* No cycle, new cycle, old cycle */
if (absoluteDate < osday)
{
return(null); /* daf yomi hadn't started yet */
}
if (absoluteDate >= nsday)
{
cno = 8 + ((absoluteDate - nsday) / 2711);
dno = (absoluteDate - nsday) % 2711;
}
else
{
cno = 1 + ((absoluteDate - osday) / 2702);
dno = (absoluteDate - osday) / 2702;
}
/* Find the daf taking note that the cycle changed slightly after cycle 7. */
total = blatt = 0;
count = -1;
/* Fix Shekalim for old cycles */
if (cno <= 7)
{
masechtaList[4].Dappim = 13;
}
else
{
masechtaList[4].Dappim = 22;
}
/* Find the daf */
j = 0;
while (j < dafcnt)
{
count++;
total = total + masechtaList[j].Dappim - 1;
if (dno < total)
{
blatt = (masechtaList[j].Dappim + 1) - (total - dno);
/* fiddle with the weird ones near the end */
switch (count)
{
case 36:
blatt += 21;
break;
case 37:
blatt += 24;
break;
case 38:
blatt += 33;
break;
default:
break;
}
/* Bailout */
j = 1 + dafcnt;
}
j++;
}
return(new Daf(masechtaList[count], blatt));
}
