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-rw-r--r--generic/datecalc.c80
1 files changed, 0 insertions, 80 deletions
diff --git a/generic/datecalc.c b/generic/datecalc.c
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--- a/generic/datecalc.c
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-/* datedif - calculates the difference in days between two dates
- * Copyright (C) 2000 Micael Widell contact: xeniac@linux.nu
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include <time.h>
-#include <stdlib.h>
-#include <string.h>
-
-
-/* Gaus's formula - days since 1.3.1600 (Gregorian calendar) */
-int days(register int n, register int m, register int y)
-{
- register int cy;
- if((m -= 2) <= 0){
- m += 12; y--;
- }
- y -= 1600; cy = y/100;
- return 365*y+y/4-cy+cy/4+367*m/12+n-31;
-}
-
-
-double dateCalc(char * date1, char * date2){
-
- /* Declare the needed variables */
- char* date[2];
- struct tm *date_tm[2];
- time_t date_time_t[2];
- double dateDifference;
- int isToday[2] = { 0, 0 };
- char buffer[5];
- int day[2], month[2], year[2], i;
-
- date[0] = date1;
- date[1] = date2;
-
- /* If any of the arguments are "today", then include today's date in the
- right variables */
- for(i = 0; i < 2; i++){
- if(!strcmp(date[i], "today")){
- time(&date_time_t[i]);
- date_tm[i] = localtime(&date_time_t[i]);
- day[i] = (*date_tm[i]).tm_mday;
- month[i] = (*date_tm[i]).tm_mon + 1;
- year[i] = (*date_tm[i]).tm_year + 1900;
- isToday[i] = 1;
- }
- }
-
- /* Cut out the year, month and day from 8-digit datestrings */
- for (i = 0; i < 2; i++){
- if(!isToday[i]){
- memset(buffer, 0, 5);
- strncpy(buffer, &date[i][6], 2);
- day[i] = atoi(buffer);
- strncpy(buffer, &date[i][4], 2);
- month[i] = atoi(buffer);
- strncpy(buffer, date[i], 4);
- year[i] = atoi(buffer);
- }
- }
-
- /* Calculate the difference */
- dateDifference = days(day[1], month[1], year[1]) - days(day[0], month[0], year[0]);
-
- return dateDifference;
-}