/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
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** accordance with the commercial license agreement provided with the
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
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** following information to ensure the GNU Lesser General Public License
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****************************************************************************/

#include <private/qcore_mac_p.h>
#include <new>
#include "qvarlengtharray.h"

QT_BEGIN_NAMESPACE

QString QCFString::toQString(CFStringRef str)
{
    if(!str)
        return QString();
    CFIndex length = CFStringGetLength(str);
    const UniChar *chars = CFStringGetCharactersPtr(str);
    if (chars)
        return QString(reinterpret_cast<const QChar *>(chars), length);

    QVarLengthArray<UniChar> buffer(length);
    CFStringGetCharacters(str, CFRangeMake(0, length), buffer.data());
    return QString(reinterpret_cast<const QChar *>(buffer.constData()), length);
}

QCFString::operator QString() const
{
    if (string.isEmpty() && type)
        const_cast<QCFString*>(this)->string = toQString(type);
    return string;
}

CFStringRef QCFString::toCFStringRef(const QString &string)
{
    return CFStringCreateWithCharacters(0, reinterpret_cast<const UniChar *>(string.unicode()),
                                        string.length());
}

QCFString::operator CFStringRef() const
{
    if (!type)
        const_cast<QCFString*>(this)->type = toCFStringRef(string);
    return type;
}

QT_END_NAMESPACE