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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 3 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 "ags/lib/system/datetime.h"
namespace AGS3 {
/*
* Converts a date/time structure to Unix timestamp
* @author Oryx Embedded SARL (www.oryx-embedded.com)
* @version 2.0.0
*/
time_t convertDateToUnixTime(const TimeDate *date) {
uint y;
uint m;
uint d;
time_t t;
// Year
y = date->tm_year;
// Month of year
m = date->tm_mon;
// Day of month
d = date->tm_mday;
// January and February are counted as months 13 and 14 of the previous year
if (m <= 2) {
m += 12;
y -= 1;
}
// Convert years to days
t = (365 * y) + (y / 4) - (y / 100) + (y / 400);
// Convert months to days
t += (30 * m) + (3 * (m + 1) / 5) + d;
// Unix time starts on January 1st, 1970
t -= 719561;
// Convert days to seconds
t *= 86400;
// Add hours, minutes and seconds
t += (3600 * date->tm_hour) + (60 * date->tm_min) + date->tm_sec;
// Return Unix time
return t;
}
void localTime(tm *time) {
g_system->getTimeAndDate(*time);
time->tm_yday = 0;
time->tm_isdst = 0;
}
time_t getUnixTime() {
tm time;
localTime(&time);
return convertDateToUnixTime(&time);
}
} // namespace AGS3
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