1 files changed, 33 insertions, 0 deletions
diff --git a/xpcom/base/MacHelpers.mm b/xpcom/base/MacHelpers.mm
new file mode 100644
index 0000000000..26c04c49dd
--- /dev/null
+++ b/xpcom/base/MacHelpers.mm
@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "nsString.h"
+#include "MacHelpers.h"
+#include "MacStringHelpers.h"
+#include "nsObjCExceptions.h"
+
+#import <Foundation/Foundation.h>
+
+namespace mozilla {
+
+nsresult GetSelectedCityInfo(nsAString& aCountryCode) {
+  NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+  // Can be replaced with [[NSLocale currentLocale] countryCode] once we build
+  // with the 10.12 SDK.
+  id countryCode = [[NSLocale currentLocale] objectForKey:NSLocaleCountryCode];
+
+  if (![countryCode isKindOfClass:[NSString class]]) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return mozilla::CopyCocoaStringToXPCOMString((NSString*)countryCode,
+                                               aCountryCode);
+
+  NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
+}
+
+}  // namespace mozilla