diff -r 000000000000 -r 6474c204b198 intl/locale/src/nsCollation.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/intl/locale/src/nsCollation.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef nsCollation_h__
+#define nsCollation_h__
+
+
+#include "nsICollation.h"
+#include "nsCOMPtr.h"
+#include "mozilla/Attributes.h"
+
+class nsIUnicodeEncoder;
+
+// Create a collation interface for an input locale.
+// 
+class nsCollationFactory MOZ_FINAL : public nsICollationFactory {
+
+public: 
+  NS_DECL_ISUPPORTS 
+
+  NS_IMETHOD CreateCollation(nsILocale* locale, nsICollation** instancePtr);
+
+  nsCollationFactory() {}
+};
+
+
+struct nsCollation {
+
+public: 
+
+  nsCollation();
+  
+  ~nsCollation();
+
+  // normalize string before collation key generation
+  nsresult NormalizeString(const nsAString& stringIn, nsAString& stringOut);
+
+  // charset conversion util, C string buffer is allocate by PR_Malloc, caller should call PR_Free
+  nsresult SetCharset(const char* aCharset);
+  nsresult UnicodeToChar(const nsAString& aSrc, char** dst);
+
+protected:
+  nsCOMPtr <nsIUnicodeEncoder>            mEncoder;
+};
+
+#endif  /* nsCollation_h__ */