Define "tz_hour" and "tz_minute" arguments to date_part().
Fix up "ISO-style" timespan decoding and encoding.
This commit is contained in:
Thomas G. Lockhart
parent
3be86c98c6
commit
8e602a3cb7
@ -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/Attic/dt.c,v 1.52 1998/02/26 04:37:02 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/Attic/dt.c,v 1.53 1998/05/09 22:38:18 thomas Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -1241,17 +1241,6 @@ datetime_age(DateTime *datetime1, DateTime *datetime2)
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elog(ERROR, "Unable to decode datetime", NULL);
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}
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#if FALSE
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result->time = (fsec2 - fsec1);
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result->time += (tm2->tm_sec - tm1->tm_sec);
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result->time += 60 * (tm2->tm_min - tm1->tm_min);
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result->time += 3600 * (tm2->tm_hour - tm1->tm_hour);
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result->time += 86400 * (tm2->tm_mday - tm1->tm_mday);
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result->month = 12 * (tm2->tm_year - tm1->tm_year);
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result->month += (tm2->tm_mon - tm1->tm_mon);
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#endif
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}
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else
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{
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@ -1419,12 +1408,6 @@ datetime_trunc(text *units, DateTime *datetime)
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*lp = '\0';
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type = DecodeUnits(0, lowunits, &val);
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#if FALSE
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if (type == IGNORE)
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{
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type = DecodeSpecial(0, lowunits, &val);
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}
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#endif
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#ifdef DATEDEBUG
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if (type == IGNORE)
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@ -1564,12 +1547,6 @@ timespan_trunc(text *units, TimeSpan *timespan)
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*lp = '\0';
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type = DecodeUnits(0, lowunits, &val);
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#if FALSE
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if (type == IGNORE)
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{
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type = DecodeSpecial(0, lowunits, &val);
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}
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#endif
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#ifdef DATEDEBUG
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if (type == IGNORE)
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@ -1676,6 +1653,7 @@ datetime_part(text *units, DateTime *datetime)
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char *up,
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*lp,
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lowunits[MAXDATELEN + 1];
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double dummy;
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double fsec;
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char *tzn;
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struct tm tt,
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@ -1725,6 +1703,16 @@ datetime_part(text *units, DateTime *datetime)
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*result = tz;
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break;
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case DTK_TZ_MINUTE:
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*result = tz / 60;
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TMODULO(*result, dummy, 60e0);
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break;
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case DTK_TZ_HOUR:
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dummy = tz;
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TMODULO(dummy, *result, 3600e0);
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break;
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case DTK_MICROSEC:
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*result = (fsec * 1000000);
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break;
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@ -2248,8 +2236,7 @@ static datetkn deltatktbl[] = {
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{"mils", UNITS, DTK_MILLENIUM}, /* "millenia" relative time units */
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{"millenia", UNITS, DTK_MILLENIUM}, /* "millenia" relative time units */
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{DMILLENIUM, UNITS, DTK_MILLENIUM}, /* "millenium" relative time units */
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{"millisecon", UNITS, DTK_MILLISEC}, /* "millisecond" relative
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* time units */
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{"millisecon", UNITS, DTK_MILLISEC}, /* relative time units */
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{"min", UNITS, DTK_MINUTE}, /* "minute" relative time units */
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{"mins", UNITS, DTK_MINUTE},/* "minutes" relative time units */
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{"mins", UNITS, DTK_MINUTE},/* "minutes" relative time units */
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@ -2258,29 +2245,25 @@ static datetkn deltatktbl[] = {
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{"mon", UNITS, DTK_MONTH}, /* "months" relative time units */
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{"mons", UNITS, DTK_MONTH}, /* "months" relative time units */
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{DMONTH, UNITS, DTK_MONTH}, /* "month" relative time units */
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{"months", UNITS, DTK_MONTH}, /* "months" relative time units */
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{"ms", UNITS, DTK_MILLISEC},/* "millisecond" relative time units */
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{"msec", UNITS, DTK_MILLISEC}, /* "millisecond" relative time
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* units */
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{DMILLISEC, UNITS, DTK_MILLISEC}, /* "millisecond" relative time
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* units */
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{"mseconds", UNITS, DTK_MILLISEC}, /* "milliseconds" relative time
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* units */
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{"msecs", UNITS, DTK_MILLISEC}, /* "milliseconds" relative time
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* units */
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{"qtr", UNITS, DTK_QUARTER},/* "quarter" relative time units */
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{DQUARTER, UNITS, DTK_QUARTER}, /* "quarter" relative time units */
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{"reltime", IGNORE, 0}, /* "reltime" for pre-v6.1 "Undefined
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* Reltime" */
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{"s", UNITS, DTK_SECOND}, /* "second" relative time units */
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{"sec", UNITS, DTK_SECOND}, /* "second" relative time units */
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{DSECOND, UNITS, DTK_SECOND}, /* "second" relative time units */
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{"seconds", UNITS, DTK_SECOND}, /* "seconds" relative time units */
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{"secs", UNITS, DTK_SECOND},/* "seconds" relative time units */
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{DTIMEZONE, UNITS, DTK_TZ}, /* "timezone" time offset */
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{"tz", UNITS, DTK_TZ}, /* "timezone" time offset */
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{"undefined", RESERV, DTK_INVALID}, /* "undefined" pre-v6.1 invalid
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* time */
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{"months", UNITS, DTK_MONTH},
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{"ms", UNITS, DTK_MILLISEC},
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{"msec", UNITS, DTK_MILLISEC},
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{DMILLISEC, UNITS, DTK_MILLISEC},
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{"mseconds", UNITS, DTK_MILLISEC},
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{"msecs", UNITS, DTK_MILLISEC},
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{"qtr", UNITS, DTK_QUARTER}, /* "quarter" relative time */
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{DQUARTER, UNITS, DTK_QUARTER}, /* "quarter" relative time */
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{"reltime", IGNORE, 0}, /* for pre-v6.1 "Undefined Reltime" */
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{"s", UNITS, DTK_SECOND},
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{"sec", UNITS, DTK_SECOND},
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{DSECOND, UNITS, DTK_SECOND},
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{"seconds", UNITS, DTK_SECOND},
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{"secs", UNITS, DTK_SECOND},
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{DTIMEZONE, UNITS, DTK_TZ}, /* "timezone" time offset */
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{"tz", UNITS, DTK_TZ}, /* "timezone" time offset */
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{"tz_hour", UNITS, DTK_TZ_HOUR}, /* timezone hour units */
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{"tz_minute", UNITS, DTK_TZ_MINUTE}, /* timezone minutes units */
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{"undefined", RESERV, DTK_INVALID}, /* pre-v6.1 invalid time */
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{"us", UNITS, DTK_MICROSEC},/* "microsecond" relative time units */
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{"usec", UNITS, DTK_MICROSEC}, /* "microsecond" relative time
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* units */
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@ -2444,7 +2427,7 @@ datetime2tm(DateTime dt, int *tzp, struct tm * tm, double *fsec, char **tzn)
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#endif
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*fsec = JROUND(sec);
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TMODULO(*fsec, tm->tm_sec, 1);
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TMODULO(*fsec, tm->tm_sec, 1e0);
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#ifdef DATEDEBUG
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printf("datetime2tm- time is %02d:%02d:%02d %.7f\n", tm->tm_hour, tm->tm_min, tm->tm_sec, *fsec);
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@ -2455,10 +2438,6 @@ datetime2tm(DateTime dt, int *tzp, struct tm * tm, double *fsec, char **tzn)
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if (IS_VALID_UTIME(tm->tm_year, tm->tm_mon, tm->tm_mday))
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{
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utime = (dt + (date0 - date2j(1970, 1, 1)) * 86400);
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#if FALSE
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if (utime < -1)
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utime++;
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#endif
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#ifdef USE_POSIX_TIME
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tx = localtime(&utime);
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@ -2607,7 +2586,7 @@ timespan2tm(TimeSpan span, struct tm * tm, float8 *fsec)
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TMODULO(time, tm->tm_mday, 86400e0);
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TMODULO(time, tm->tm_hour, 3600e0);
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TMODULO(time, tm->tm_min, 60e0);
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TMODULO(time, tm->tm_sec, 1);
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TMODULO(time, tm->tm_sec, 1e0);
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*fsec = time;
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#ifdef DATEDEBUG
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@ -3719,26 +3698,19 @@ DecodeSpecial(int field, char *lowtoken, int *val)
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* Allow "date" field DTK_DATE since this could be just
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* an unsigned floating point number. - thomas 1997-11-16
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*
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* If code is changed to read fields from first to last,
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* then use READ_FORWARD-bracketed code to allow sign
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* to persist to subsequent unsigned fields.
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* Allow ISO-style time span, with implicit units on number of days
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* preceeding an hh:mm:ss field. - thomas 1998-04-30
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*/
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int
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DecodeDateDelta(char *field[], int ftype[], int nf, int *dtype, struct tm * tm, double *fsec)
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{
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int is_before = FALSE;
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#if READ_FORWARD
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int is_neg = FALSE;
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#endif
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char *cp;
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int fmask = 0,
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tmask,
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type;
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int i,
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ii;
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int i;
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int flen,
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val;
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double fval;
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@ -3755,30 +3727,8 @@ DecodeDateDelta(char *field[], int ftype[], int nf, int *dtype, struct tm * tm,
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tm->tm_sec = 0;
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*fsec = 0;
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/* read through list forwards to pick up initial time fields, if any */
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for (ii = 0; ii < nf; ii++)
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{
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#ifdef DATEDEBUG
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printf("DecodeDateDelta- field[%d] is %s (type %d)\n", ii, field[ii], ftype[ii]);
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#endif
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if (ftype[ii] == DTK_TIME)
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{
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if (DecodeTime(field[ii], fmask, &tmask, tm, fsec) != 0)
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return -1;
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fmask |= tmask;
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}
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else
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{
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break;
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}
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}
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/*
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* read through remaining list backwards to pick up units before
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* values
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*/
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for (i = nf - 1; i >= ii; i--)
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/* read through list backwards to pick up units before values */
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for (i = nf - 1; i >= 0; i--)
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{
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#ifdef DATEDEBUG
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printf("DecodeDateDelta- field[%d] is %s (type %d)\n", i, field[i], ftype[i]);
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@ -3786,27 +3736,18 @@ DecodeDateDelta(char *field[], int ftype[], int nf, int *dtype, struct tm * tm,
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switch (ftype[i])
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{
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case DTK_TIME:
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/* already read in forward-scan above so return error */
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#if FALSE
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if (DecodeTime(field[i], fmask, &tmask, tm, fsec) != 0)
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return -1;
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#endif
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return -1;
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type = DTK_DAY;
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break;
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case DTK_TZ: /* timezone is a token with a leading sign
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* character */
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#if READ_FORWARD
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is_neg = (*field[i] == '-');
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#endif
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case DTK_TZ:
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/* Timezone is a token with a leading sign character
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* and otherwise the same as a non-signed numeric field
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*/
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case DTK_DATE:
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case DTK_NUMBER:
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val = strtol(field[i], &cp, 10);
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#if READ_FORWARD
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if (is_neg && (val > 0))
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val = -val;
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#endif
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if (*cp == '.')
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{
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fval = strtod(cp, &cp);
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@ -3815,11 +3756,6 @@ DecodeDateDelta(char *field[], int ftype[], int nf, int *dtype, struct tm * tm,
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if (val < 0)
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fval = -(fval);
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#if FALSE
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*fsec = strtod(cp, NULL);
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if (val < 0)
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*fsec = -(*fsec);
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#endif
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}
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else if (*cp == '\0')
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fval = 0;
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@ -3963,7 +3899,7 @@ DecodeDateDelta(char *field[], int ftype[], int nf, int *dtype, struct tm * tm,
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if (*fsec != 0)
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{
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TMODULO(*fsec, sec, 1);
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TMODULO(*fsec, sec, 1e0);
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tm->tm_sec += sec;
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}
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@ -4380,8 +4316,10 @@ EncodeDateTime(struct tm * tm, double fsec, int *tzp, char **tzn, int style, cha
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/* EncodeTimeSpan()
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* Interpret time structure as a delta time and convert to string.
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*
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* Pass a flag to specify the style of string, but only implement
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* the traditional Postgres style for now. - tgl 97/03/27
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* Support "traditional Postgres" and ISO-8601 styles.
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* Actually, afaik ISO does not address time interval formatting,
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* but this looks similar to the spec for absolute date/time.
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* - thomas 1998-04-30
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*/
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int
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EncodeTimeSpan(struct tm * tm, double fsec, int style, char *str)
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@ -4392,105 +4330,118 @@ EncodeTimeSpan(struct tm * tm, double fsec, int style, char *str)
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switch (style)
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{
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/* compatible with ISO date formats */
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/* compatible with ISO date formats */
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case USE_ISO_DATES:
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break;
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default:
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strcpy(cp, "@");
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strcpy(cp, "@ ");
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cp += strlen(cp);
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break;
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}
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if (tm->tm_year != 0)
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{
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is_nonzero = TRUE;
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is_before |= (tm->tm_year < 0);
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sprintf(cp, " %d year%s", abs(tm->tm_year), ((abs(tm->tm_year) != 1) ? "s" : ""));
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sprintf(cp, "%d year%s",
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abs(tm->tm_year), ((abs(tm->tm_year) != 1) ? "s" : ""));
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cp += strlen(cp);
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is_nonzero = TRUE;
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}
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if (tm->tm_mon != 0)
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{
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is_nonzero = TRUE;
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is_before |= (tm->tm_mon < 0);
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sprintf(cp, " %d mon%s", abs(tm->tm_mon), ((abs(tm->tm_mon) != 1) ? "s" : ""));
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sprintf(cp, "%s%d mon%s", (is_nonzero? " ": ""),
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abs(tm->tm_mon), ((abs(tm->tm_mon) != 1) ? "s" : ""));
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cp += strlen(cp);
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}
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if (tm->tm_mday != 0)
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{
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is_nonzero = TRUE;
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is_before |= (tm->tm_mday < 0);
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sprintf(cp, " %d day%s", abs(tm->tm_mday), ((abs(tm->tm_mday) != 1) ? "s" : ""));
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cp += strlen(cp);
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}
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switch (style)
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{
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/* compatible with ISO date formats */
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/* compatible with ISO date formats */
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case USE_ISO_DATES:
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if (tm->tm_mday != 0)
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{
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is_before |= (tm->tm_mday < 0);
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sprintf(cp, "%s%d", (is_nonzero? " ": ""), abs(tm->tm_mday));
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cp += strlen(cp);
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is_nonzero = TRUE;
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}
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is_before |= ((tm->tm_hour < 0) || (tm->tm_min < 0));
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sprintf(cp, "%s%02d:%02d", (is_nonzero? " ": ""),
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abs(tm->tm_hour), abs(tm->tm_min));
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cp += strlen(cp);
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if ((tm->tm_hour != 0) || (tm->tm_min != 0))
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is_nonzero = TRUE;
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is_before |= ((tm->tm_hour < 0) || (tm->tm_min < 0));
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sprintf(cp, " %02d:%02d", abs(tm->tm_hour), abs(tm->tm_min));
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cp += strlen(cp);
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/* fractional seconds? */
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if (fsec != 0)
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{
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is_nonzero = TRUE;
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fsec += tm->tm_sec;
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is_before |= (fsec < 0);
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sprintf(cp, ":%05.2f", fabs(fsec));
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cp += strlen(cp);
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is_nonzero = TRUE;
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/* otherwise, integer seconds only? */
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}
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else if (tm->tm_sec != 0)
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{
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is_nonzero = TRUE;
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is_before |= (tm->tm_sec < 0);
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sprintf(cp, ":%02d", abs(tm->tm_sec));
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cp += strlen(cp);
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is_nonzero = TRUE;
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}
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break;
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case USE_POSTGRES_DATES:
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default:
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if (tm->tm_mday != 0)
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{
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is_before |= (tm->tm_mday < 0);
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sprintf(cp, "%s%d day%s", (is_nonzero? " ": ""),
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abs(tm->tm_mday), ((abs(tm->tm_mday) != 1) ? "s" : ""));
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cp += strlen(cp);
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is_nonzero = TRUE;
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}
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if (tm->tm_hour != 0)
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{
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is_nonzero = TRUE;
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is_before |= (tm->tm_hour < 0);
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sprintf(cp, " %d hour%s", abs(tm->tm_hour), ((abs(tm->tm_hour) != 1) ? "s" : ""));
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sprintf(cp, "%s%d hour%s", (is_nonzero? " ": ""),
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abs(tm->tm_hour), ((abs(tm->tm_hour) != 1) ? "s" : ""));
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cp += strlen(cp);
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is_nonzero = TRUE;
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}
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if (tm->tm_min != 0)
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{
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is_nonzero = TRUE;
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is_before |= (tm->tm_min < 0);
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sprintf(cp, " %d min%s", abs(tm->tm_min), ((abs(tm->tm_min) != 1) ? "s" : ""));
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sprintf(cp, "%s%d min%s", (is_nonzero? " ": ""),
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abs(tm->tm_min), ((abs(tm->tm_min) != 1) ? "s" : ""));
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cp += strlen(cp);
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is_nonzero = TRUE;
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}
|
||||
|
||||
/* fractional seconds? */
|
||||
if (fsec != 0)
|
||||
{
|
||||
is_nonzero = TRUE;
|
||||
fsec += tm->tm_sec;
|
||||
is_before |= (fsec < 0);
|
||||
sprintf(cp, " %.2f secs", fabs(fsec));
|
||||
sprintf(cp, "%s%.2f secs", (is_nonzero? " ": ""), fabs(fsec));
|
||||
cp += strlen(cp);
|
||||
is_nonzero = TRUE;
|
||||
|
||||
/* otherwise, integer seconds only? */
|
||||
}
|
||||
else if (tm->tm_sec != 0)
|
||||
{
|
||||
is_nonzero = TRUE;
|
||||
is_before |= (tm->tm_sec < 0);
|
||||
sprintf(cp, " %d sec%s", abs(tm->tm_sec), ((abs(tm->tm_sec) != 1) ? "s" : ""));
|
||||
sprintf(cp, "%s%d sec%s", (is_nonzero? " ": ""),
|
||||
abs(tm->tm_sec), ((abs(tm->tm_sec) != 1) ? "s" : ""));
|
||||
cp += strlen(cp);
|
||||
is_nonzero = TRUE;
|
||||
}
|
||||
break;
|
||||
}
|
||||
@ -4498,7 +4449,7 @@ EncodeTimeSpan(struct tm * tm, double fsec, int style, char *str)
|
||||
/* identically zero? then put in a unitless zero... */
|
||||
if (!is_nonzero)
|
||||
{
|
||||
strcat(cp, " 0");
|
||||
strcat(cp, "0");
|
||||
cp += strlen(cp);
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user