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- /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- *
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL. You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation. All Rights
- * Reserved.
- */
-
- #include <time.h>
- #include "xp_mcom.h"
-
- /* Note that the ordering of the '#include "xp_mcom.h"' and the '#undef ctime' is
- important. xp_mcom.h defines ctime as Macctime. Macctime calls ctime. The result
- was endless recursion. -km */
-
- #ifdef mktime
- #undef mktime
- #undef ctime
- #undef localtime
- __extern_c /* declarations */
- time_t mktime(struct tm *);
- char *ctime(const time_t *);
- struct tm *localtime(const time_t *);
- __end_extern_c
- #endif
-
-
- // Because serial port and SLIP conflict with ReadXPram calls,
- // we cache the call here so we don't hang on calling ReadLocation()
- void MyReadLocation(MachineLocation * loc);
-
- long GMTDelta();
- Boolean DaylightSaving();
- time_t GetTimeMac();
- time_t Mactime(time_t *timer);
- time_t Macmktime (struct tm *timeptr);
- char * Macctime(const time_t * t);
- struct tm *Macgmtime (const time_t *clock);
-
-
- void MyReadLocation(MachineLocation * loc)
- {
- static MachineLocation storedLoc; // InsideMac, OSUtilities, page 4-20
- static Boolean didReadLocation = FALSE;
- if (!didReadLocation)
- {
- ReadLocation(&storedLoc);
- didReadLocation = TRUE;
- }
- *loc = storedLoc;
- }
-
- Boolean DaylightSaving()
- {
- MachineLocation loc;
- unsigned char dlsDelta;
- MyReadLocation(&loc);
- dlsDelta = loc.u.dlsDelta;
- return (dlsDelta != 0);
- }
-
-
- // We need to do this, because we wrap localtime as a macro in
- #ifdef localtime
- #undef localtime
- #endif
-
- // current local time = GMTDelta() + GMT
- // GMT = local time - GMTDelta()
- long GMTDelta()
- {
- MachineLocation loc;
- long gmtDelta;
-
- MyReadLocation(&loc);
- gmtDelta = loc.u.gmtDelta & 0x00FFFFFF;
- if ((gmtDelta & 0x00800000) != 0)
- gmtDelta |= 0xFF000000;
- return gmtDelta;
- }
-
-
- // This routine simulates stdclib time(), time in seconds since 1.1.1970
- // The time is in GMT
- time_t GetTimeMac()
- {
- unsigned long maclocal;
- // Get Mac local time
- GetDateTime(&maclocal);
- // Get Mac GMT
- maclocal -= GMTDelta();
- // return unix GMT
- return (maclocal - UNIXMINUSMACTIME);
- }
-
- // Returns the GMT times
- time_t Mactime(time_t *timer)
- {
- time_t t = GetTimeMac();
- if (timer != NULL)
- *timer = t;
- return t;
- }
-
- time_t Macmktime (struct tm *timeptr)
- {
- time_t theTime;
-
- // ÑÑÑ HACK to work around the bug in mktime
- int negativeDiff = 0;
- if (timeptr->tm_sec < 0)
- {
- negativeDiff += timeptr->tm_sec;
- timeptr->tm_sec = 0;
- }
- if (timeptr->tm_min < 0)
- {
- negativeDiff += timeptr->tm_min*60;
- timeptr->tm_min = 0;
- }
- if (timeptr->tm_hour < 0)
- {
- negativeDiff += timeptr->tm_hour*60*60;
- timeptr->tm_hour = 0;
- }
- if (timeptr->tm_mday < 0)
- {
- negativeDiff += timeptr->tm_mday*60*60*24;
- timeptr->tm_mday = 0;
- }
-
- // local/Mac
- theTime = mktime(timeptr);
- // mktime does not care what the daylightsavings flag is
- timeptr->tm_isdst = 0;//DaylightSavings();
- theTime += negativeDiff;
-
- // GMT/Mac
- theTime -= GMTDelta();
- // unix/GMT
- return theTime - UNIXMINUSMACTIME;
- }
-
- //
- char * Macctime(const time_t * t)
- {
- // GMT Mac
- time_t macTime = *t + UNIXMINUSMACTIME;
- // local Mac
- macTime += GMTDelta();
-
- return ctime(&macTime);
- }
-
- struct tm *Maclocaltime(const time_t * t)
- {
- // GMT Mac
- time_t macLocal = *t + UNIXMINUSMACTIME;
- // local Mac
- macLocal += GMTDelta();
- return localtime(&macLocal);
- }
-
- // -> unix GMT
- struct tm *Macgmtime (const time_t *clock)
- {
- // GMT Mac
- time_t macGMT = *clock + UNIXMINUSMACTIME;
- return localtime(&macGMT);
- }
-
-