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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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "glk/time.h"
#include "common/system.h"
namespace Glk {
TimeAndDate::TimeAndDate() {
::TimeDate t;
g_system->getTimeAndDate(t);
year = t.tm_year;
month = t.tm_mon;
day = t.tm_mday;
weekday = t.tm_wday;
hour = t.tm_hour;
minute = t.tm_min;
second = t.tm_sec;
microsec = 0;
}
TimeAndDate::TimeAndDate(const TimeSeconds &ts) {
setTime(ts);
}
TimeAndDate::TimeAndDate(const Timestamp &t) {
setTime(((int64)t.high_sec << 32) | t.low_sec);
}
TimeAndDate::operator TimeSeconds() const {
return getTime();
}
TimeAndDate::operator Timestamp() const {
TimeSeconds secs = getTime();
Timestamp ts;
ts.high_sec = secs >> 32;
ts.low_sec = secs & 0xffffffff;
ts.microsec = 0;
return ts;
}
void TimeAndDate::setTime(const TimeSeconds &ts) {
TimeSeconds total = ts;
int daysInYear = 0, secsInYear = 0;
// Figure out the year
this->year = 1969;
do {
++this->year;
total -= secsInYear;
daysInYear = ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) ? 366 : 365;
secsInYear = daysInYear * 24 * 60 * 60;
} while (total >= secsInYear);
// Figure out month and day
int dayInYear = total / (24 * 60 * 60);
total %= 24 * 60 * 60;
int MONTH_DAYS[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
this->month = 1;
while (dayInYear >= MONTH_DAYS[this->month - 1]) {
dayInYear -= MONTH_DAYS[this->month - 1];
this->month++;
}
this->day = dayInYear + 1;
// set the time within the day
this->hour = total / (60 * 60);
total %= (60 * 60);
this->minute = total / 60;
this->second = total % 60;
this->microsec = 0;
}
TimeSeconds TimeAndDate::getTime() const {
uint32 days = day - 1;
for (int i = 1970; i < year; ++i)
if ((i % 4 == 0 && i % 100 != 0) || (i % 400 == 0))
days += 366;
else
days += 365;
int mdays[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
for (int i = 1; i < month; ++i) {
days += mdays[i - 1];
if (i == 2)
if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
days += 1;
}
int64 totalHours = days * 24 + hour;
int64 totalMinutes = totalHours * 60 + minute;
return totalMinutes * 60 + second;
}
} // End of namespace Glk
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