/****************************************************************************
 **
 ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
 ** Copyright (C) 2014 Petroules Corporation.
 ** Contact: http://www.qt-project.org/legal
 **
 ** This file is part of the QtCore module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and Digia.  For licensing terms and
 ** conditions see http://qt.digia.com/licensing.  For further information
 ** use the contact form at http://qt.digia.com/contact-us.
 **
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** In addition, as a special exception, Digia gives you certain additional
 ** rights.  These rights are described in the Digia Qt LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3.0 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU General Public License version 3.0 requirements will be
 ** met: http://www.gnu.org/copyleft/gpl.html.
 **
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

#include <private/qcore_mac_p.h>

#ifdef Q_OS_IOS
#import <UIKit/UIKit.h>
#endif

QT_BEGIN_NAMESPACE

typedef qint16 (*GestaltFunction)(quint32 selector, qint32 *response);

NSString *QCFString::toNSString(const QString &string)
{
    // The const cast below is safe: CfStringRef is immutable and so is NSString.
    return [const_cast<NSString *>(reinterpret_cast<const NSString *>(toCFStringRef(string))) autorelease];
}

QString QCFString::toQString(const NSString *nsstr)
{
    return toQString(reinterpret_cast<CFStringRef>(nsstr));
}

QAppleOperatingSystemVersion qt_apple_os_version()
{
    QAppleOperatingSystemVersion v = {0, 0, 0};
#if QT_MAC_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_10, __IPHONE_8_0)
    if ([NSProcessInfo instancesRespondToSelector:@selector(operatingSystemVersion)]) {
        NSOperatingSystemVersion osv = NSProcessInfo.processInfo.operatingSystemVersion;
        v.major = osv.majorVersion;
        v.minor = osv.minorVersion;
        v.patch = osv.patchVersion;
        return v;
    }
#endif
    // Use temporary variables so we can return 0.0.0 (unknown version)
    // in case of an error partway through determining the OS version
    qint32 major = 0, minor = 0, patch = 0;
#if defined(Q_OS_IOS)
    @autoreleasepool {
        NSArray *parts = [UIDevice.currentDevice.systemVersion componentsSeparatedByString:@"."];
        major = parts.count > 0 ? [[parts objectAtIndex:0] intValue] : 0;
        minor = parts.count > 1 ? [[parts objectAtIndex:1] intValue] : 0;
        patch = parts.count > 2 ? [[parts objectAtIndex:2] intValue] : 0;
    }
#elif defined(Q_OS_OSX)
    static GestaltFunction pGestalt = 0;
    if (!pGestalt) {
        CFBundleRef b = CFBundleGetBundleWithIdentifier(CFSTR("com.apple.CoreServices"));
        pGestalt = reinterpret_cast<GestaltFunction>(CFBundleGetFunctionPointerForName(b,
                                                     CFSTR("Gestalt")));
    }
    if (!pGestalt)
        return v;
    if (pGestalt('sys1', &major) != 0)
        return v;
    if (pGestalt('sys2', &minor) != 0)
        return v;
    if (pGestalt('sys3', &patch) != 0)
        return v;
#endif
    v.major = major;
    v.minor = minor;
    v.patch = patch;
    return v;
}

QT_END_NAMESPACE