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119 lines
1.7 KiB
C
119 lines
1.7 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 *
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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 *
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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
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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
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hours(TimeADT *time)
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{
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return (*time / (60 * 60));
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}
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int4
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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
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seconds(TimeADT *time)
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{
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return (((int) *time) % 60);
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}
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int4
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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
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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
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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
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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
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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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