1 files changed, 83 insertions, 0 deletions
diff --git a/eBones/kdb_edit/maketime.c b/eBones/kdb_edit/maketime.c
new file mode 100644
index 0000000..057ecc3
--- /dev/null
+++ b/eBones/kdb_edit/maketime.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright 1990 by the Massachusetts Institute of Technology.
+ * For copying and distribution information, please see the file
+ * <Copyright.MIT>.
+ *
+ * Convert a struct tm * to a UNIX time.
+ *
+ *	from: maketime.c,v 4.2 90/01/09 15:54:51 raeburn Exp $
+ *	$Id: maketime.c,v 1.2 1994/07/19 19:23:56 g89r4222 Exp $
+ */
+
+#ifndef	lint
+static char rcsid[] =
+"$Id: maketime.c,v 1.1 1994/03/21 16:23:54 piero Exp ";
+#endif	lint
+
+#include <sys/time.h>
+
+#define daysinyear(y) (((y) % 4) ? 365 : (((y) % 100) ? 366 : (((y) % 400) ? 365 : 366)))
+
+#define SECSPERDAY 24*60*60
+#define SECSPERHOUR 60*60
+#define SECSPERMIN 60
+
+static int cumdays[] = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334,
+			     365};
+
+static int leapyear[] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+static int nonleapyear[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+
+long
+maketime(tp, local)
+register struct tm *tp;
+int local;
+{
+    register long retval;
+    int foo;
+    int *marray;
+
+    if (tp->tm_mon < 0 || tp->tm_mon > 11 ||
+	tp->tm_hour < 0 || tp->tm_hour > 23 ||
+	tp->tm_min < 0 || tp->tm_min > 59 ||
+	tp->tm_sec < 0 || tp->tm_sec > 59) /* out of range */
+	return 0;
+
+    retval = 0;
+    if (tp->tm_year < 1900)
+	foo = tp->tm_year + 1900;
+    else
+	foo = tp->tm_year;
+
+    if (foo < 1901 || foo > 2038)	/* year is too small/large */
+	return 0;
+
+    if (daysinyear(foo) == 366) {
+	if (tp->tm_mon > 1)
+	    retval+= SECSPERDAY;	/* add leap day */
+	marray = leapyear;
+    } else
+	marray = nonleapyear;
+
+    if (tp->tm_mday < 0 || tp->tm_mday > marray[tp->tm_mon])
+	return 0;			/* out of range */
+
+    while (--foo >= 1970)
+	retval += daysinyear(foo) * SECSPERDAY;
+
+    retval += cumdays[tp->tm_mon] * SECSPERDAY;
+    retval += (tp->tm_mday-1) * SECSPERDAY;
+    retval += tp->tm_hour * SECSPERHOUR + tp->tm_min * SECSPERMIN + tp->tm_sec;
+
+    if (local) {
+	/* need to use local time, so we retrieve timezone info */
+	struct timezone tz;
+	struct timeval tv;
+	if (gettimeofday(&tv, &tz) < 0) {
+	    /* some error--give up? */
+	    return(retval);
+	}
+	retval += tz.tz_minuteswest * SECSPERMIN;
+    }
+    return(retval);
+}