--- BasiliskII/src/macos_util.cpp	2001/02/02 20:52:57	1.7
+++ BasiliskII/src/macos_util.cpp	2004/01/12 15:29:22	1.10
@@ -1,7 +1,7 @@
 /*
  *  macos_util.cpp - MacOS definitions/utility functions
  *
- *  Basilisk II (C) 1997-2001 Christian Bauer
+ *  Basilisk II (C) 1997-2004 Christian Bauer
  *
  *  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
@@ -106,19 +106,41 @@ void FileDiskLayout(loff_t size, uint8 *
 
 uint32 DebugUtil(uint32 Selector)
 {
-	switch (Selector)
-		{
-	case duDebuggerGetMax:
-		return 3;
-	case duDebuggerEnter:
-		return 0;
-	case duDebuggerExit:
-		return 0;
-	case duDebuggerPoll:
-		ADBInterrupt();
-		return 0;
-	default:
-		return (uint32) paramErr;
-		}
+	switch (Selector) {
+		case duDebuggerGetMax:
+			return 3;
+		case duDebuggerEnter:
+			return 0;
+		case duDebuggerExit:
+			return 0;
+		case duDebuggerPoll:
+			ADBInterrupt();
+			return 0;
+		default:
+			return (uint32) paramErr;
+	}
 }
 
+
+/*
+ *  Convert time_t value to MacOS time (seconds since 1.1.1904)
+ */
+
+uint32 TimeToMacTime(time_t t)
+{
+	// This code is taken from glibc 2.2
+
+	// Convert to number of seconds elapsed since 1-Jan-1904
+	struct tm *local = localtime(&t);
+	const int TM_EPOCH_YEAR = 1900;
+	const int MAC_EPOCH_YEAR = 1904;
+	int a4 = ((local->tm_year + TM_EPOCH_YEAR) >> 2) - !(local->tm_year & 3);
+	int b4 = (MAC_EPOCH_YEAR >> 2) - !(MAC_EPOCH_YEAR & 3);
+	int a100 = a4 / 25 - (a4 % 25 < 0);
+	int b100 = b4 / 25 - (b4 % 25 < 0);
+	int a400 = a100 >> 2;
+	int b400 = b100 >> 2;
+	int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
+	uint32 days = local->tm_yday + 365 * (local->tm_year - 4) + intervening_leap_days;
+	return local->tm_sec + 60 * (local->tm_min + 60 * (local->tm_hour + 24 * days));
+}