Add conversion from datetime to time data type.
Rename date+time conversion to datetime to ensure less than 16 characters in routine name (required to fit in pg_proc table).
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Thomas G. Lockhart
parent
0d6facbad6
commit
9f99e4c6b6
@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.16 1997/09/08 21:48:22 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.17 1997/10/25 05:16:09 thomas Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -123,25 +123,11 @@ date_out(DateADT date)
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*tm = &tt;
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char buf[MAXDATELEN + 1];
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#if FALSE
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int year,
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month,
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day;
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#endif
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j2date((date + date2j(2000, 1, 1)),
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&(tm->tm_year), &(tm->tm_mon), &(tm->tm_mday));
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EncodeDateOnly(tm, DateStyle, buf);
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#if FALSE
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if (EuroDates == 1) /* Output European-format dates */
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sprintf(buf, "%02d-%02d-%04d", day, month, year);
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else
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sprintf(buf, "%02d-%02d-%04d", month, day, year);
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#endif
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result = PALLOC(strlen(buf) + 1);
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strcpy(result, buf);
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@ -211,7 +197,8 @@ date_smaller(DateADT dateVal1, DateADT dateVal2)
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return (date_lt(dateVal1, dateVal2) ? dateVal1 : dateVal2);
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} /* date_smaller() */
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/* Compute difference between two dates in days. */
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/* Compute difference between two dates in days.
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*/
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int4
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date_mi(DateADT dateVal1, DateADT dateVal2)
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{
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@ -219,14 +206,16 @@ date_mi(DateADT dateVal1, DateADT dateVal2)
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} /* date_mi() */
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/* Add a number of days to a date, giving a new date.
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Must handle both positive and negative numbers of days. */
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* Must handle both positive and negative numbers of days.
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*/
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DateADT
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date_pli(DateADT dateVal, int4 days)
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{
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return (dateVal + days);
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} /* date_pli() */
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/* Subtract a number of days from a date, giving a new date. */
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/* Subtract a number of days from a date, giving a new date.
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*/
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DateADT
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date_mii(DateADT dateVal, int4 days)
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{
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@ -388,11 +377,6 @@ date2tm(DateADT dateVal, int *tzp, struct tm * tm, double *fsec, char **tzn)
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tm->tm_year = tx->tm_year + 1900;
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tm->tm_mon = tx->tm_mon + 1;
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tm->tm_mday = tx->tm_mday;
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#if FALSE
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tm->tm_hour = tx->tm_hour;
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tm->tm_min = tx->tm_min;
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tm->tm_sec = tx->tm_sec;
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#endif
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tm->tm_isdst = tx->tm_isdst;
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#ifdef HAVE_INT_TIMEZONE
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@ -420,13 +404,6 @@ date2tm(DateADT dateVal, int *tzp, struct tm * tm, double *fsec, char **tzn)
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}
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else
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{
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#if FALSE
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j2date((dateVal + date2j(2000, 1, 1)), &(tm->tm_year), &(tm->tm_mon), &(tm->tm_mday));
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tm->tm_hour = 0;
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tm->tm_min = 0;
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tm->tm_sec = 0;
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#endif
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#ifdef DATEDEBUG
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printf("date2tm- convert %d-%d-%d %d:%d%d to datetime\n",
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tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
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@ -491,12 +468,6 @@ time_out(TimeADT *time)
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struct tm tt,
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*tm = &tt;
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#if FALSE
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int hour,
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min,
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sec;
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#endif
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double fsec;
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char buf[MAXDATELEN + 1];
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@ -511,25 +482,6 @@ time_out(TimeADT *time)
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EncodeTimeOnly(tm, fsec, DateStyle, buf);
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#if FALSE
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if (sec == 0.0)
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{
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sprintf(buf, "%02d:%02d", hour, min);
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}
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else
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{
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if (fsec == 0)
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{
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sprintf(buf, "%02d:%02d:%02d", hour, min, sec);
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}
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else
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{
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sprintf(buf, "%02d:%02d:%05.2f", hour, min, (sec + fsec));
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}
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}
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#endif
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result = PALLOC(strlen(buf) + 1);
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strcpy(result, buf);
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@ -599,11 +551,56 @@ time_cmp(TimeADT *time1, TimeADT *time2)
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} /* time_cmp() */
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/* datetime_datetime()
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/* datetime_time()
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* Convert datetime to time data type.
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*/
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TimeADT *
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datetime_time(DateTime *datetime)
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{
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TimeADT *result;
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struct tm tt,
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*tm = &tt;
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int tz;
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double fsec;
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char *tzn;
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if (!PointerIsValid(datetime))
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elog(WARN, "Unable to convert null datetime to date", NULL);
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if (DATETIME_NOT_FINITE(*datetime))
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elog(WARN, "Unable to convert datetime to date", NULL);
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if (DATETIME_IS_EPOCH(*datetime))
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{
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datetime2tm(SetDateTime(*datetime), NULL, tm, &fsec, NULL);
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}
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else if (DATETIME_IS_CURRENT(*datetime))
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{
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datetime2tm(SetDateTime(*datetime), &tz, tm, &fsec, &tzn);
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}
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else
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{
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if (datetime2tm(*datetime, &tz, tm, &fsec, &tzn) != 0)
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elog(WARN, "Unable to convert datetime to date", NULL);
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}
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result = PALLOCTYPE(TimeADT);
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*result = ((((tm->tm_hour * 60) + tm->tm_min) * 60) + tm->tm_sec + fsec);
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return (result);
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} /* datetime_time() */
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/* datet_datetime()
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* Convert date and time to datetime data type.
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* Should be called datetime_datetime()
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* but need <= 16 characters for function names.
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*/
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DateTime *
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datetime_datetime(DateADT date, TimeADT *time)
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datet_datetime(DateADT date, TimeADT *time)
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{
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DateTime *result;
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@ -611,16 +608,13 @@ datetime_datetime(DateADT date, TimeADT *time)
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{
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result = PALLOCTYPE(DateTime);
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DATETIME_INVALID(*result);
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}
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else
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{
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} else {
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result = date_datetime(date);
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*result += *time;
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}
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return (result);
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} /* datetime_datetime() */
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} /* datet_datetime() */
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int32 /* RelativeTime */
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