gecko-dev/xpcom/base/MacStringHelpers.mm
Henri Sivonen 8402e1f7a2 Bug 1448772 - Avoid back-and-forth UTF-16 to UTF-8 to UTF-16 conversions in xpcom/base/MacHelpers.mm. r=mstange
MozReview-Commit-ID: LQ4ZMJzy5WI

--HG--
extra : rebase_source : 85320f3e0bcef7711517ecc1e5b7bc5ec074bda5
2018-03-26 10:49:02 +03:00

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/* -*- 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 "MacStringHelpers.h"
#include "nsObjCExceptions.h"
#include "mozilla/IntegerTypeTraits.h"
namespace mozilla {
nsresult
CopyCocoaStringToXPCOMString(NSString* aFrom, nsAString& aTo)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
NSUInteger len = [aFrom length];
if (len > MaxValue<nsAString::size_type>::value) {
return NS_ERROR_OUT_OF_MEMORY;
}
if (!aTo.SetLength(len, mozilla::fallible)) {
return NS_ERROR_OUT_OF_MEMORY;
}
[aFrom getCharacters:reinterpret_cast<unichar*>(aTo.BeginWriting()) range:NSMakeRange(0, len)];
return NS_OK;
NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}
} // namespace Mozilla