99 lines
1.8 KiB
C
99 lines
1.8 KiB
C
/*
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* datetime_functions.c --
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*
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* This file defines new functions for the time and date data types.
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*
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* Copyright (c) 1996, Massimo Dal Zotto <dz@cs.unitn.it>
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*/
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#include <time.h>
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#include "postgres.h"
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#include "utils/palloc.h"
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#include "utils/datetime.h"
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TimeADT *time_difference(TimeADT * time1, TimeADT * time2)
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{
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TimeADT *result = (TimeADT *) palloc(sizeof(TimeADT));
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*result = *time1 - *time2;
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return (result);
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}
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TimeADT *currenttime()
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{
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time_t current_time;
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struct tm *tm;
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TimeADT *result = (TimeADT *) palloc(sizeof(TimeADT));
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current_time = time(NULL);
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tm = localtime(¤t_time);
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*result = ((((tm->tm_hour*60)+tm->tm_min)*60)+tm->tm_sec);
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return (result);
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}
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DateADT currentdate()
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{
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time_t current_time;
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struct tm *tm;
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DateADT result;
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current_time = time(NULL);
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tm = localtime(¤t_time);
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result = date2j(tm->tm_year,tm->tm_mon + 1,tm->tm_mday) -
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date2j(100,1,1);
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return (result);
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}
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int4 hours(TimeADT * time)
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{
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return(*time / (60*60));
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}
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int4 minutes(TimeADT * time)
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{
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return(((int) (*time / 60)) % 60);
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}
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int4 seconds(TimeADT * time)
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{
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return(((int) *time) % 60);
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}
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int4 day(DateADT *date)
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{
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struct tm tm;
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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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return (tm.tm_mday);
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}
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int4 month(DateADT *date)
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{
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struct tm tm;
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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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return (tm.tm_mon);
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}
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int4 year(DateADT *date)
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{
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struct tm tm;
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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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return (tm.tm_year);
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}
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int4 asminutes(TimeADT * time)
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{
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int seconds = (int) *time;
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return (seconds / 60);
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}
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int4 asseconds(TimeADT * time)
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{
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int seconds = (int) *time;
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return (seconds);
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}
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