1 files changed, 41 insertions, 0 deletions
diff --git a/xpcom/base/MacHelpers.mm b/xpcom/base/MacHelpers.mm
new file mode 100644
index 000000000..19d0d8900
--- /dev/null
+++ b/xpcom/base/MacHelpers.mm
@@ -0,0 +1,41 @@
+/* -*- 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 "nsObjCExceptions.h"
+
+#import <Foundation/Foundation.h>
+
+namespace mozilla {
+
+nsresult
+GetSelectedCityInfo(nsAString& aCountryCode)
+{
+  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
+
+  // 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;
+  }
+
+  const char* countryCodeUTF8 = [(NSString*)countryCode UTF8String];
+
+  if (!countryCodeUTF8) {
+    return NS_ERROR_FAILURE;
+  }
+
+  AppendUTF8toUTF16(countryCodeUTF8, aCountryCode);
+  return NS_OK;
+
+  NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
+}
+
+} // namespace Mozilla
+