Make all test262 tests pass on Windows (#3157)

Changes:
- Implemented jerry_port_get_local_time_zone_adjustment on Windows
- Implemented jerry_port_get_current_time on Windows
- Run test262 tests on Windows in PST/PDT timezone

JerryScript-DCO-1.0-Signed-off-by: Csaba Osztrogonác oszi@inf.u-szeged.hu

jerry-port/default/default-date.c

@@ -16,6 +16,14 @@
 #ifdef HAVE_TM_GMTOFF
 #include <time.h>
 #endif /* HAVE_TM_GMTOFF */
+
+#ifdef _WINDOWS
+#include <windows.h>
+#include <winbase.h>
+#include <winnt.h>
+#include <time.h>
+#endif /* _WINDOWS */
+
 #ifdef __GNUC__
 #include <sys/time.h>
 #endif /* __GNUC__ */
@@ -23,6 +31,17 @@
 #include "jerryscript-port.h"
 #include "jerryscript-port-default.h"
 
+#ifdef _WINDOWS
+/* https://support.microsoft.com/en-us/help/167296/how-to-convert-a-unix-time-t-to-a-win32-filetime-or-systemtime */
+void UnixTimeToFileTime (LONGLONG t, LPFILETIME pft)
+{
+  LONGLONG ll = t * 10000000 + 116444736000000000;
+  pft->dwLowDateTime = (DWORD) ll;
+  pft->dwHighDateTime = ll >> 32;
+} /* UnixTimeToFileTime */
+#endif /* _WINDOWS */
+
+
 /**
  * Default implementation of jerry_port_get_local_time_zone_adjustment. Uses the 'tm_gmtoff' field
  * of 'struct tm' (a GNU extension) filled by 'localtime_r' if available on the
@@ -47,6 +66,25 @@ double jerry_port_get_local_time_zone_adjustment (double unix_ms,  /**< ms since
 #else /* !HAVE_TM_GMTOFF */
   (void) unix_ms;
   (void) is_utc;
+#ifdef _WINDOWS
+  FILETIME fileTime, localFileTime;
+  SYSTEMTIME systemTime, localSystemTime;
+  ULARGE_INTEGER time, localTime;
+
+  _tzset ();
+  UnixTimeToFileTime ((LONGLONG) (unix_ms / 1000), &fileTime);
+
+  if (FileTimeToSystemTime (&fileTime, &systemTime)
+      && SystemTimeToTzSpecificLocalTime (0, &systemTime, &localSystemTime)
+      && SystemTimeToFileTime (&localSystemTime, &localFileTime))
+  {
+    time.LowPart = fileTime.dwLowDateTime;
+    time.HighPart = fileTime.dwHighDateTime;
+    localTime.LowPart = localFileTime.dwLowDateTime;
+    localTime.HighPart = localFileTime.dwHighDateTime;
+    return ((LONGLONG) localTime.QuadPart - (LONGLONG) time.QuadPart) / 10000;
+  }
+#endif /* _WINDOWS */
   return 0.0;
 #endif /* HAVE_TM_GMTOFF */
 } /* jerry_port_get_local_time_zone_adjustment */
@@ -70,5 +108,11 @@ double jerry_port_get_current_time (void)
   }
 #endif /* __GNUC__ */
 
+#ifdef _WINDOWS
+  time_t ltime;
+  time (&ltime);
+  return ltime * 1000;
+#endif /* _WINDOWS */
+
   return 0.0;
 } /* jerry_port_get_current_time */