Datetime patch

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Here is another attempt at the datetime fix, to stop the ambiguity
for dates like "01-13-2003". I put the > 12 month validation in because
otherwise it is still read in as a "month", but it rolls over.
In other words, '2003-14-03' becomes '2004-02-03'

--
Greg Sabino Mullane greg(at)turnstep(dot)com
PGP Key: 0x14964AC8 200306301327

Index: datetime.c
===================================================================
RCS file: /projects/cvsroot/pgsql-server/src/backend/utils/adt/datetime.c,v
retrieving revision 1.106
diff -c -r1.106 datetime.c
*** datetime.c 25 Jun 2003 21:14:14 -0000 1.106
--- datetime.c 30 Jun 2003 17:26:22 -0000
***************
*** 2379,2440 ****
***/
else if (flen >= 4)
{
! *tmask = DTK_M(YEAR);

! /* already have a year? then see if we can substitute... */
! if ((fmask & DTK_M(YEAR)) && (!(fmask & DTK_M(DAY)))
! && ((tm->tm_year >= 1) && (tm->tm_year <= 31)))
{
! tm->tm_mday = tm->tm_year;
! *tmask = DTK_M(DAY);
}
!
! tm->tm_year = val;
}
!
! /* already have year? then could be month */
! else if ((fmask & DTK_M(YEAR)) && (!(fmask & DTK_M(MONTH)))
! && ((val >= 1) && (val <= 12)))
{
! *tmask = DTK_M(MONTH);
! tm->tm_mon = val;
}
! /* no year and EuroDates enabled? then could be day */
! else if ((EuroDates || (fmask & DTK_M(MONTH)))
! && (!(fmask & DTK_M(YEAR)) && !(fmask & DTK_M(DAY)))
! && ((val >= 1) && (val <= 31)))
{
*tmask = DTK_M(DAY);
tm->tm_mday = val;
}
! else if ((!(fmask & DTK_M(MONTH)))
! && ((val >= 1) && (val <= 12)))
{
*tmask = DTK_M(MONTH);
tm->tm_mon = val;
}
! else if ((!(fmask & DTK_M(DAY)))
! && ((val >= 1) && (val <= 31)))
{
*tmask = DTK_M(DAY);
tm->tm_mday = val;
}
!
! /*
! * Check for 2 or 4 or more digits, but currently we reach here only
! * if two digits. - thomas 2000-03-28
! */
! else if (!(fmask & DTK_M(YEAR))
! && ((flen >= 4) || (flen == 2)))
{
! *tmask = DTK_M(YEAR);
! tm->tm_year = val;
!
! /* adjust ONLY if exactly two digits... */
! *is2digits = (flen == 2);
}
else
! return -1;

return 0;
} /* DecodeNumber() */
--- 2379,2447 ----
***/
else if (flen >= 4)
{
! /*
! * If no month or day, start of YYYY-MM-DD
! * If have month AND day, end of MM-DD-YYYY or DD-MM-YYYY
! * If neither case, throw an error
! */

! if ((!(fmask & DTK_M(YEAR)))
! && (((!(fmask & DTK_M(DAY))) && (!(fmask & DTK_M(MONTH))))
! ||
! ((fmask & DTK_M(DAY)) && (fmask & DTK_M(MONTH)))))
{
! *tmask = DTK_M(YEAR);
! tm->tm_year = val;
}
! else
! return -1;
}
! /* If we already have a day AND month, must be a 2-digit year */
! else if ((fmask & DTK_M(DAY)) && (fmask & DTK_M(MONTH)))
{
! *tmask = DTK_M(YEAR);
! tm->tm_year = val;
! *is2digits = TRUE;
}
!
! /* If we already have a year and a month, must be day */
! else if ((fmask & DTK_M(YEAR)) && (fmask & DTK_M(MONTH)))
{
*tmask = DTK_M(DAY);
tm->tm_mday = val;
}
! /* A year and a day is currently an error, as YYYY-DD-MM is not allowed */
! else if ((fmask & DTK_M(YEAR)) && (fmask & DTK_M(MONTH)))
! return -1;
! /* If have year or day, set the month */
! else if ((fmask & DTK_M(YEAR)) || (fmask & DTK_M(DAY)))
{
+ /* Do not allow month to roll over */
+ if (val > 12)
+ return -1;
*tmask = DTK_M(MONTH);
tm->tm_mon = val;
}
! /* If have a month, set the day */
! else if ((fmask & DTK_M(MONTH)))
{
*tmask = DTK_M(DAY);
tm->tm_mday = val;
}
! /* If using EuroDates, this must be the day, otherwise month */
! else if (EuroDates)
{
! *tmask = DTK_M(DAY);
! tm->tm_mday = val;
}
else
! {
! /* Do not allow month to roll over */
! if (val > 12)
! return -1;
! *tmask = DTK_M(MONTH);
! tm->tm_mon = val;
! }

return 0;
} /* DecodeNumber() */

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