Implement time conversion routines for Unix and XT epoch formats

xtoskrnl/includes/rtl.hh

@@ -22,6 +22,7 @@
 #include <rtl/sha1.hh>
 #include <rtl/slist.hh>
 #include <rtl/string.hh>
+#include <rtl/time.hh>
 #include <rtl/widestr.hh>
 
 #endif /* __XTOSKRNL_RTL_HH */

xtoskrnl/includes/rtl/time.hh

@@ -0,0 +1,36 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/includes/rtl/time.hh
+ * DESCRIPTION:     Time conversion support
+ * DEVELOPERS:      Aiken Harris <harraiken91@gmail.com>
+ */
+
+#ifndef __XTOSKRNL_RTL_TIME_HH
+#define __XTOSKRNL_RTL_TIME_HH
+
+#include <xtos.hh>
+
+
+/* Runtime Library */
+namespace RTL
+{
+    class Time
+    {
+        private:
+            STATIC CUSHORT DaysInMonth[2][12];
+            STATIC CUSHORT DaysPrecedingMonth[2][12];
+
+        public:
+            STATIC XTAPI XTSTATUS TimeFieldsToUnixEpoch(IN PTIME_FIELDS TimeFields,
+                                                        OUT PLONGLONG UnixTime);
+            STATIC XTAPI XTSTATUS TimeFieldsToXtEpoch(IN PTIME_FIELDS TimeFields,
+                                                      OUT PLARGE_INTEGER XtTime);
+
+        private:
+            STATIC XTFASTCALL BOOLEAN LeapYear(SHORT Year);
+
+    };
+}
+
+#endif /* __XTOSKRNL_RTL_TIME_HH */