80 lines
1.9 KiB
C++
80 lines
1.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "ags/lib/system/datetime.h"
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namespace AGS3 {
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/*
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* Converts a date/time structure to Unix timestamp
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* @author Oryx Embedded SARL (www.oryx-embedded.com)
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* @version 2.0.0
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*/
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time_t convertDateToUnixTime(const TimeDate *date) {
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uint y;
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uint m;
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uint d;
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time_t t;
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// Year
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y = date->tm_year;
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// Month of year
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m = date->tm_mon;
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// Day of month
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d = date->tm_mday;
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// January and February are counted as months 13 and 14 of the previous year
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if (m <= 2) {
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m += 12;
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y -= 1;
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}
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// Convert years to days
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t = (365 * y) + (y / 4) - (y / 100) + (y / 400);
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// Convert months to days
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t += (30 * m) + (3 * (m + 1) / 5) + d;
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// Unix time starts on January 1st, 1970
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t -= 719561;
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// Convert days to seconds
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t *= 86400;
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// Add hours, minutes and seconds
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t += (3600 * date->tm_hour) + (60 * date->tm_min) + date->tm_sec;
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// Return Unix time
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return t;
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}
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void localTime(tm *time) {
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g_system->getTimeAndDate(*time);
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time->tm_yday = 0;
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time->tm_isdst = 0;
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}
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time_t getUnixTime() {
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tm time;
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localTime(&time);
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return convertDateToUnixTime(&time);
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}
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} // namespace AGS3
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