Initial commit of Command & Conquer Renegade source code.

Code/Tools/wlib/timezone.cpp

@@ -0,0 +1,71 @@
+/*
+**	Command & Conquer Renegade(tm)
+**	Copyright 2025 Electronic Arts Inc.
+**
+**	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 "wlib/xtime.h"
+#include "timezone.h"
+
+void GetTimezoneInfo(const char * &timezone_str, int &timezone_offset) {
+	timezone_str = "Unknown Timezone";
+	timezone_offset = 0;
+#ifdef _WINDOWS
+	struct _timeb    wintime;
+	_ftime(&wintime);
+
+	if (wintime.dstflag) {
+		// Daylight savings time
+		if (_daylight) {
+			timezone_str = _tzname[1];
+		}
+	} else {
+		timezone_str = _tzname[0];
+	}
+	timezone_offset = wintime.timezone * 60; // its in minutes...
+
+#endif
+#ifndef _WINDOWS
+	struct timeval   unixtime;
+	struct timezone  unixtzone;
+	gettimeofday(&unixtime,&unixtzone);
+
+	struct tm unixtm;
+	localtime_r(&unixtime.tv_sec, &unixtm);
+
+	if (unixtm.tm_isdst) {
+		// Daylight savings time
+		if (daylight) timezone_str = tzname[1];
+		timezone_offset = altzone;
+	} else {
+		timezone_str = tzname[0];
+		timezone_offset = timezone;
+	}
+#endif
+}
+
+const char * TimezoneString(void) {
+	const char *timezone_str;
+	int timezone_offset;
+	GetTimezoneInfo(timezone_str, timezone_offset);
+	return timezone_str;
+}
+
+int TimezoneOffset(void) {
+	const char *timezone_str;
+	int timezone_offset;
+	GetTimezoneInfo(timezone_str, timezone_offset);
+	return timezone_offset;
+}