/** *  date.cpp * *  Copyright (C) 2008  David Andrs <pda@jasnapaka.com> * *  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, see <http://www.gnu.org/licenses/>. * */#include <afx.h>#include "date.h"// structure to hold datestruct date {	int month;	int day;	int year;};// part of # of days calc.long int funct1 (int y, int m) {	long int result;	if ( m <= 2 )		y -= 1;	result = y;	return (result);}long int funct2 (int m) {	long int result;	if ( m <= 2 )		result = m + 13;	else		result = m + 1;	return(result);}/* Function to calculate the number of days in dates */long int day_count (int m, int d, int y) {	long int number;	number = 1461 * funct1(y, m) / 4 + 153 * funct2(m) / 5 + d;	return (number);}long int MakeLinearDate(SYSTEMTIME &st) {	return day_count(st.wMonth, st.wDay, st.wYear);}int SystemTimeToLong(SYSTEMTIME *today) {	return (today->wHour * 60) + today->wMinute;}SYSTEMTIME TimeToTimeZone(SYSTEMTIME *time) {	SYSTEMTIME st = *time;	FILETIME ft, lFt;	SystemTimeToFileTime(&st, &ft);	FileTimeToLocalFileTime(&ft, &lFt);	FileTimeToSystemTime(&lFt, &st);	return st;}SYSTEMTIME TimeToGMT(SYSTEMTIME *time, int tzhour, int tzmin) {	CTime tm(*time);	if (tzhour < 0)		tm -= CTimeSpan(0, abs(tzhour), abs(tzmin), 0);	else		tm += CTimeSpan(0, abs(tzhour), abs(tzmin), 0);	SYSTEMTIME st;	if (tm.GetAsSystemTime(st))		return st;	else		return *time;}void SystemTimeToLinearDate(SYSTEMTIME *st, FILETIME *ft) {	DWORD hi = 0;	hi = (st->wYear - 2000);	hi = (hi << 4) | (st->wMonth - 1);	hi = (hi << 5) | (st->wDay - 1);	hi = (hi << 5) | (st->wHour);	hi = (hi << 6) | (st->wMinute);	hi = (hi << 6) | (st->wSecond);	ft->dwHighDateTime = hi;	ft->dwLowDateTime = st->wMilliseconds;}