* ext/win32ole/win32ole.c (vtdate2rbtime): try to convert millisecond

of VT_DATE VARIANT to nsec of Time object.
* test/win32ole/test_win32ole_variant.rb
  (test_conversion_dbl2date_with_msec): ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47297 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Wed Aug 27 19:52:33 2014  Masaki Suketa <masaki.suketa@nifty.ne.jp>
+
+	* ext/win32ole/win32ole.c (vtdate2rbtime): try to convert millisecond
+	  of VT_DATE VARIANT to nsec of Time object.
+	* test/win32ole/test_win32ole_variant.rb
+	  (test_conversion_dbl2date_with_msec): ditto.
+
 Wed Aug 27 09:57:29 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
 
 	* test/ruby/test_complex.rb: removed unreachable code.

ext/win32ole/win32ole.c

@@ -26,7 +26,7 @@
 const IID IID_IMultiLanguage2 = {0xDCCFC164, 0x2B38, 0x11d2, {0xB7, 0xEC, 0x00, 0xC0, 0x4F, 0x8F, 0x5D, 0x9A}};
 #endif
 
-#define WIN32OLE_VERSION "1.7.8"
+#define WIN32OLE_VERSION "1.7.9"
 
 typedef HRESULT (STDAPICALLTYPE FNCOCREATEINSTANCEEX)
     (REFCLSID, IUnknown*, DWORD, COSERVERINFO*, DWORD, MULTI_QI*);
@@ -405,7 +405,7 @@ static double
 rbtime2vtdate(VALUE tmobj)
 {
     SYSTEMTIME st;
-    double t = 0;
+    double t;
     memset(&st, 0, sizeof(SYSTEMTIME));
     st.wYear = FIX2INT(rb_funcall(tmobj, rb_intern("year"), 0));
     st.wMonth = FIX2INT(rb_funcall(tmobj, rb_intern("month"), 0));
@@ -423,8 +423,8 @@ vtdate2rbtime(double date)
 {
     SYSTEMTIME st;
     VALUE v;
+    double msec;
     VariantTimeToSystemTime(date, &st);
-
     v = rb_funcall(rb_cTime, rb_intern("new"), 6,
 		      INT2FIX(st.wYear),
 		      INT2FIX(st.wMonth),
@@ -432,8 +432,21 @@ vtdate2rbtime(double date)
 		      INT2FIX(st.wHour),
 		      INT2FIX(st.wMinute),
 		      INT2FIX(st.wSecond));
-    if (st.wMilliseconds > 0) {
-	return rb_funcall(v, rb_intern("+"), 1, rb_float_new((double)(st.wMilliseconds / 1000.0)));
+    /*
+     * Unfortunately VariantTimeToSystemTime always ignores the
+     * wMilliseconds of SYSTEMTIME struct(The wMilliseconds is 0).
+     * So, we need to calculate milliseconds by ourselves.
+     */
+    msec = fabs(date);
+    msec -= floor(date);
+    msec *= 24 * 60;
+    msec -= floor(msec);
+    msec *= 60;
+    msec -= st.wSecond;
+    msec = round(msec * 1000);
+    msec /= 1000;
+    if (msec != 0) {
+        return rb_funcall(v, rb_intern("+"), 1, rb_float_new(msec));
     }
     return v;
 }

test/win32ole/test_win32ole_variant.rb

@@ -388,6 +388,14 @@ if defined?(WIN32OLE_VARIANT)
       assert_equal(dt, obj.value)
     end
 
+    def test_conversion_dbl2date_with_msec
+      # Date is "2014/8/27 12:34:56.789"
+      obj = WIN32OLE_VARIANT.new(41878.524268391200167, WIN32OLE::VARIANT::VT_DATE)
+      t = obj.value
+      assert_equal("2014-08-27 12:34:56", t.strftime('%Y-%m-%d %H:%M:%S'))
+      assert_equal(789, (t.nsec / 1000000).round)
+    end
+
     # this test failed because of VariantTimeToSystemTime
     # and SystemTimeToVariantTime API ignores wMilliseconds
     # member of SYSTEMTIME  struct.