xpcom/base/MacHelpers.mm
author Markus Stange <mstange@themasta.com>
Tue, 18 Oct 2016 11:23:38 -0400
changeset 348750 6865d79cc63ba61f4393efc59916cf2a6b5a8056
parent 348749 4b8ee372651bdf60fa25960671c32f765ae45dd3
child 464857 24f434072ecd13a2c11742245d019aa242ce1345
permissions -rw-r--r--
Bug 1310814 - Add ObjC exception guards. r=spohl, a=ritu With the added safety checks it's unlikely that anything in this function will fire ObjC exceptions, but our rule is to have guards around every Objective C function that can directly be called from C++ files. MozReview-Commit-ID: GQ0bN5638Sf

/* -*- 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