From 19089524026e82f0fe2a094823f00a2a80f87e15 Mon Sep 17 00:00:00 2001
From: David Rajchenbach-Teller <dteller@mozilla.com>
Date: Wed, 9 May 2012 12:05:22 +0200
Subject: [PATCH] Bug 747872 - Exporting Win constants to JS. r=khuey

---
 dom/system/OSFileConstants.cpp | 83 +++++++++++++++++++++++++++++++++-
 1 file changed, 82 insertions(+), 1 deletion(-)

diff --git a/dom/system/OSFileConstants.cpp b/dom/system/OSFileConstants.cpp
index 17e9146ef20..704444c0577 100644
--- a/dom/system/OSFileConstants.cpp
+++ b/dom/system/OSFileConstants.cpp
@@ -9,6 +9,10 @@
 #include "unistd.h"
 #endif // defined(XP_UNIX)
 
+#if defined(XP_WIN)
+#include <windows.h>
+#endif // defined(XP_WIN)
+
 #include "jsapi.h"
 #include "jsfriendapi.h"
 #include "BindingUtils.h"
@@ -171,6 +175,71 @@ static dom::ConstantSpec gLibcProperties[] =
   PROP_END
 };
 
+
+#if defined(XP_WIN)
+/**
+ * The properties defined in windows.h.
+ *
+ * If you extend this list of properties, please
+ * separate categories ("errors", "open", etc.),
+ * keep properties organized by alphabetical order
+ * and #ifdef-away properties that are not portable.
+ */
+static dom::ConstantSpec gWinProperties[] =
+{
+  // FormatMessage flags
+  INT_CONSTANT(FORMAT_MESSAGE_FROM_SYSTEM),
+  INT_CONSTANT(FORMAT_MESSAGE_IGNORE_INSERTS),
+
+  // CreateFile desired access
+  INT_CONSTANT(GENERIC_ALL),
+  INT_CONSTANT(GENERIC_EXECUTE),
+  INT_CONSTANT(GENERIC_READ),
+  INT_CONSTANT(GENERIC_WRITE),
+
+  // CreateFile share mode
+  INT_CONSTANT(FILE_SHARE_DELETE),
+  INT_CONSTANT(FILE_SHARE_READ),
+  INT_CONSTANT(FILE_SHARE_WRITE),
+
+  // CreateFile creation disposition
+  INT_CONSTANT(CREATE_ALWAYS),
+  INT_CONSTANT(CREATE_NEW),
+  INT_CONSTANT(OPEN_ALWAYS),
+  INT_CONSTANT(OPEN_EXISTING),
+  INT_CONSTANT(TRUNCATE_EXISTING),
+
+  // CreateFile attributes
+  INT_CONSTANT(FILE_ATTRIBUTE_ARCHIVE),
+  INT_CONSTANT(FILE_ATTRIBUTE_DIRECTORY),
+  INT_CONSTANT(FILE_ATTRIBUTE_NORMAL),
+  INT_CONSTANT(FILE_ATTRIBUTE_READONLY),
+  INT_CONSTANT(FILE_ATTRIBUTE_TEMPORARY),
+
+  // SetFilePointer error constant
+  { "INVALID_HANDLE_VALUE", INT_TO_JSVAL((int)INVALID_HANDLE_VALUE) },
+
+
+  // CreateFile flags
+  INT_CONSTANT(FILE_FLAG_DELETE_ON_CLOSE),
+
+  // SetFilePointer methods
+  INT_CONSTANT(FILE_BEGIN),
+  INT_CONSTANT(FILE_CURRENT),
+  INT_CONSTANT(FILE_END),
+
+  // SetFilePointer error constant
+  INT_CONSTANT(INVALID_SET_FILE_POINTER),
+
+  // Errors
+  INT_CONSTANT(ERROR_FILE_NOT_FOUND),
+  INT_CONSTANT(ERROR_ACCESS_DENIED),
+
+  PROP_END
+};
+#endif // defined(XP_WIN)
+
+
 /**
  * Get a field of an object as an object.
  *
@@ -215,7 +284,19 @@ bool DefineOSFileConstants(JSContext *cx, JSObject *global)
   if (!(objLibc = GetOrCreateObjectProperty(cx, objConstants, "libc"))) {
     return false;
   }
-  return dom::DefineConstants(cx, objLibc, gLibcProperties);
+  if (!dom::DefineConstants(cx, objLibc, gLibcProperties)) {
+    return false;
+  }
+#if defined(XP_WIN)
+  JSObject *objWin;
+  if (!(objWin = GetOrCreateObjectProperty(cx, objConstants, "Win"))) {
+    return false;
+  }
+  if (!dom::DefineConstants(cx, objWin, gWinProperties)) {
+    return false;
+  }
+#endif // defined(XP_WIN)
+  return true;
 }
 
 } // namespace mozilla