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/*-------------------------------------------------------------------------
*
* datetimes.c--
* implements DATE and TIME data types specified in SQL-92 standard
*
* Copyright (c) 1994-5, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/Attic/datetimes.c,v 1.1.1.1 1996/07/09 06:22:03 scrappy Exp $
*
*-------------------------------------------------------------------------
*/
#include <stdio.h> /* for sprintf() */
#include <string.h>
#include "postgres.h"
#include "utils/palloc.h"
#include "utils/elog.h"
/* these things look like structs, but we pass them by value so be careful
For example, passing an int -> DateADT is not portable! */
typedef struct DateADT {
char day;
char month;
short year;
} DateADT;
typedef struct TimeADT {
short hr;
short min;
float sec;
} TimeADT;
#ifndef EUROPEAN_STYLE
#define AMERICAN_STYLE
#endif
static int day_tab[2][12] = {
{31,28,31,30,31,30,31,31,30,31,30,31},
{31,29,31,30,31,30,31,31,30,31,30,31} };
static int
isleap(int year)
{
return
(((year % 4) == 0 && (year % 100) != 0) || (year % 400) == 0);
}
/*****************************************************************************
* Date ADT
*****************************************************************************/
int4
date_in(char *datestr)
{
int d, m, y;
int4 result;
DateADT *date = (DateADT*)&result;
#ifdef USE_SHORT_YEAR
#define CHECK_DATE_LEN(datestr) (strlen(datestr) >= 8)
#else
#define CHECK_DATE_LEN(datestr) (strlen(datestr) == 10)
#endif /* USE_SHORT_YEAR */
#ifdef AMERICAN_STYLE
if (!CHECK_DATE_LEN(datestr) ||
sscanf(datestr, "%d%*c%d%*c%d", &m, &d, &y) != 3) {
elog(WARN, "date_in: date \"%s\" not of the form mm-dd-yyyy",
datestr);
}
#else
if (!CHECK_DATE_LEN(datestr) ||
sscanf(datestr, "%d%*c%d%*c%d", &d, &m, &y) != 3) {
elog(WARN, "date_in: date \"%s\" not of the form dd-mm-yyyy",
datestr);
}
#endif
if (m < 1 || m > 12)
elog(WARN, "date_in: month must be limited to values 1 through 12 in \"%s\"", datestr);
if (d < 1 || d > day_tab[isleap(y)][m-1])
elog(WARN, "date_in: day must be limited to values 1 through %d in \"%s\"",
day_tab[isleap(y)][m-1], datestr);
#ifdef USE_SHORT_YEAR
if (y < 100)
y += 1900; /* hack! */
#endif /* USE_SHORT_YEAR */
date->day = d;
date->month = m;
date->year = y;
return result;
}
char *
date_out(int4 dateVal)
{
char *datestr = palloc(11);
int4 dateStore;
DateADT *date;
/* DateADT is a structure that happens to be four bytes long,
trust me on this.... */
date = (DateADT*)&dateStore;
dateStore = dateVal;
#ifdef AMERICAN_STYLE
sprintf(datestr, "%02d-%02d-%04d",
(int)date->month, (int)date->day, (int)date->year);
#else
sprintf(datestr, "%02d-%02d-%04d",
(int)date->day, (int)date->month, (int)date->year);
#endif
return datestr;
}
int
date_eq(int4 dateVal1, int4 dateVal2)
{
int4 dateStore1 = dateVal1;
int4 dateStore2 = dateVal2;
DateADT *date1, *date2;
date1 = (DateADT*)&dateStore1;
date2 = (DateADT*)&dateStore2;
return (date1->day==date2->day &&
date1->month==date2->month &&
date1->year==date2->year);
}
int
date_ne(int4 dateVal1, int4 dateVal2)
{
int4 dateStore1 = dateVal1;
int4 dateStore2 = dateVal2;
DateADT *date1, *date2;
date1 = (DateADT*)&dateStore1;
date2 = (DateADT*)&dateStore2;
return (date1->day!=date2->day || date1->month!=date2->month ||
date1->year!=date2->year);
}
int
date_lt(int4 dateVal1, int4 dateVal2)
{
int4 dateStore1 = dateVal1;
int4 dateStore2 = dateVal2;
DateADT *date1, *date2;
date1 = (DateADT*)&dateStore1;
date2 = (DateADT*)&dateStore2;
if (date1->year!=date2->year)
return (date1->year<date2->year);
if (date1->month!=date2->month)
return (date1->month<date2->month);
return (date1->day<date2->day);
}
int
date_le(int4 dateVal1, int4 dateVal2)
{
int4 dateStore1 = dateVal1;
int4 dateStore2 = dateVal2;
DateADT *date1, *date2;
date1 = (DateADT*)&dateStore1;
date2 = (DateADT*)&dateStore2;
if (date1->year!=date2->year)
return (date1->year<=date2->year);
if (date1->month!=date2->month)
return (date1->month<=date2->month);
return (date1->day<=date2->day);
}
int
date_gt(int4 dateVal1, int4 dateVal2)
{
int4 dateStore1 = dateVal1;
int4 dateStore2 = dateVal2;
DateADT *date1, *date2;
date1 = (DateADT*)&dateStore1;
date2 = (DateADT*)&dateStore2;
if (date1->year!=date2->year)
return (date1->year>date2->year);
if (date1->month!=date2->month)
return (date1->month>date2->month);
return (date1->day>date2->day);
}
int
date_ge(int4 dateVal1, int4 dateVal2)
{
int4 dateStore1 = dateVal1;
int4 dateStore2 = dateVal2;
DateADT *date1, *date2;
date1 = (DateADT*)&dateStore1;
date2 = (DateADT*)&dateStore2;
if (date1->year!=date2->year)
return (date1->year>=date2->year);
if (date1->month!=date2->month)
return (date1->month>=date2->month);
return (date1->day>=date2->day);
}
int
date_cmp(int4 dateVal1, int4 dateVal2)
{
int4 dateStore1 = dateVal1;
int4 dateStore2 = dateVal2;
DateADT *date1, *date2;
date1 = (DateADT*)&dateStore1;
date2 = (DateADT*)&dateStore2;
if (date1->year!=date2->year)
return ((date1->year<date2->year) ? -1 : 1);
if (date1->month!=date2->month)
return ((date1->month<date2->month) ? -1 : 1);
if (date1->day!=date2->day)
return ((date1->day<date2->day) ? -1 : 1);
return 0;
}
/*****************************************************************************
* Time ADT
*****************************************************************************/
char *
time_in(char *timestr)
{
int h, m;
float sec;
TimeADT *time;
if (sscanf(timestr, "%d%*c%d%*c%f", &h, &m, &sec) != 3) {
elog(WARN, "time_in: time \"%s\" not of the form hh:mm:ss",
timestr);
}
if (h < 0 || h > 23)
elog(WARN, "time_in: hour must be limited to values 0 through 23 in \"%s\"", timestr);
if (m < 0 || m > 59)
elog(WARN, "time_in: minute must be limited to values 0 through 59 in \"%s\"", timestr);
if (sec < 0 || sec >= 62.0)
elog(WARN, "time_in: second must be limited to values 0 through 61.99 in \"%s\"", timestr);
time = (TimeADT*)palloc(sizeof(TimeADT));
time->hr = h;
time->min = m;
time->sec = sec;
return (char*)time;
}
char *
time_out(TimeADT *time)
{
char *timestr = palloc(16);
sprintf(timestr, "%02d:%02d:%09.6f",
(int)time->hr, (int)time->min, time->sec);
return timestr;
}
int
time_eq(TimeADT *time1, TimeADT *time2)
{
return (time1->sec==time2->sec && time1->min==time2->min &&
time1->hr==time2->hr);
}
int
time_ne(TimeADT *time1, TimeADT *time2)
{
return (time1->sec!=time2->sec || time1->min!=time2->min ||
time1->hr!=time2->hr);
}
int
time_lt(TimeADT *time1, TimeADT *time2)
{
if (time1->hr!=time2->hr)
return (time1->hr<time2->hr);
if (time1->min!=time2->min)
return (time1->min<time2->min);
return (time1->sec<time2->sec);
}
int
time_le(TimeADT *time1, TimeADT *time2)
{
if (time1->hr!=time2->hr)
return (time1->hr<=time2->hr);
if (time1->min!=time2->min)
return (time1->min<=time2->min);
return (time1->sec<=time2->sec);
}
int
time_gt(TimeADT *time1, TimeADT *time2)
{
if (time1->hr!=time2->hr)
return (time1->hr>time2->hr);
if (time1->min!=time2->min)
return (time1->min>time2->min);
return (time1->sec>time2->sec);
}
int
time_ge(TimeADT *time1, TimeADT *time2)
{
if (time1->hr!=time2->hr)
return (time1->hr>=time2->hr);
if (time1->min!=time2->min)
return (time1->min>=time2->min);
return (time1->sec>=time2->sec);
}
int
time_cmp(TimeADT *time1, TimeADT *time2)
{
if (time1->hr!=time2->hr)
return ((time1->hr<time2->hr) ? -1 : 1);
if (time1->min!=time2->min)
return ((time1->min<time2->min) ? -1 : 1);
if (time1->sec!=time2->sec)
return ((time1->sec<time2->sec) ? -1 : 1);
return 0;
}
int32 /* RelativeTime */
int42reltime(int32 timevalue)
{
return(timevalue);
}
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