60643d379b
(Including all changes for FreeBSD - importing the original eBones distribution would be too complex at this stage, since I don't have access to Piero's CVS.) (If you want to include eBones in your system, don't forget to include MAKE_EBONES in /etc/make.conf.) (This stuff is now also suppable from braae.ru.ac.za.) Bones originally from MIT SIPB. Original port to FreeBSD 1.x by Piero Serini. Moved to FreeBSD 2.0 by Doug Rabson and Geoff Rehmet. Nice bug fixes from Doug Rabson.
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/*
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* Copyright 1990 by the Massachusetts Institute of Technology.
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* For copying and distribution information, please see the file
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* <Copyright.MIT>.
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*
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* Convert a struct tm * to a UNIX time.
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*
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* from: maketime.c,v 4.2 90/01/09 15:54:51 raeburn Exp $
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* $Id: maketime.c,v 1.2 1994/07/19 19:23:56 g89r4222 Exp $
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*/
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#ifndef lint
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static char rcsid[] =
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"$Id: maketime.c,v 1.1 1994/03/21 16:23:54 piero Exp ";
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#endif lint
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#include <sys/time.h>
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#define daysinyear(y) (((y) % 4) ? 365 : (((y) % 100) ? 366 : (((y) % 400) ? 365 : 366)))
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#define SECSPERDAY 24*60*60
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#define SECSPERHOUR 60*60
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#define SECSPERMIN 60
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static int cumdays[] = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334,
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365};
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static int leapyear[] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
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static int nonleapyear[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
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long
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maketime(tp, local)
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register struct tm *tp;
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int local;
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{
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register long retval;
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int foo;
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int *marray;
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if (tp->tm_mon < 0 || tp->tm_mon > 11 ||
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tp->tm_hour < 0 || tp->tm_hour > 23 ||
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tp->tm_min < 0 || tp->tm_min > 59 ||
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tp->tm_sec < 0 || tp->tm_sec > 59) /* out of range */
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return 0;
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retval = 0;
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if (tp->tm_year < 1900)
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foo = tp->tm_year + 1900;
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else
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foo = tp->tm_year;
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if (foo < 1901 || foo > 2038) /* year is too small/large */
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return 0;
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if (daysinyear(foo) == 366) {
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if (tp->tm_mon > 1)
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retval+= SECSPERDAY; /* add leap day */
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marray = leapyear;
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} else
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marray = nonleapyear;
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if (tp->tm_mday < 0 || tp->tm_mday > marray[tp->tm_mon])
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return 0; /* out of range */
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while (--foo >= 1970)
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retval += daysinyear(foo) * SECSPERDAY;
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retval += cumdays[tp->tm_mon] * SECSPERDAY;
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retval += (tp->tm_mday-1) * SECSPERDAY;
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retval += tp->tm_hour * SECSPERHOUR + tp->tm_min * SECSPERMIN + tp->tm_sec;
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if (local) {
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/* need to use local time, so we retrieve timezone info */
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struct timezone tz;
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struct timeval tv;
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if (gettimeofday(&tv, &tz) < 0) {
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/* some error--give up? */
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return(retval);
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}
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retval += tz.tz_minuteswest * SECSPERMIN;
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}
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return(retval);
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}
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