Add QSysInfo::MacVersion enum values and parsing for iOS

Change-Id: I82e425e3cd06e0f515aa6edfb25ef9895956a5c6
Reviewed-by: Jake Petroules <jake.petroules@petroules.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>

src/corelib/global/qglobal.cpp

@@ -985,8 +985,7 @@ bool qSharedBuild() Q_DECL_NOTHROW
 /*!
     \fn QSysInfo::MacVersion QSysInfo::macVersion()
 
-    Returns the version of Mac OS X on which the application is run (Mac OS X
-    Only).
+    Returns the version of Darwin (OS X or iOS) on which the application is run.
 */
 
 /*!
@@ -1056,7 +1055,7 @@ bool qSharedBuild() Q_DECL_NOTHROW
     \enum QSysInfo::MacVersion
 
     This enum provides symbolic names for the various versions of the
-    OS X operating system. On OS X, the
+    Darwin operating system, covering both OS X and iOS. The
     QSysInfo::MacintoshVersion variable gives the version of the
     system on which the application is run.
 
@@ -1084,6 +1083,15 @@ bool qSharedBuild() Q_DECL_NOTHROW
     \value MV_MOUNTAINLION Apple codename for MV_10_8
     \value MV_MAVERICKS    Apple codename for MV_10_9
 
+    \value MV_IOS      iOS (any)
+    \value MV_IOS_4_3  iOS 4.3
+    \value MV_IOS_5_0  iOS 5.0
+    \value MV_IOS_5_1  iOS 5.1
+    \value MV_IOS_6_0  iOS 6.0
+    \value MV_IOS_6_1  iOS 6.1
+    \value MV_IOS_7_0  iOS 7.0
+    \value MV_IOS_7_1  iOS 7.1
+
     \sa WinVersion
 */
 
@@ -1706,13 +1714,15 @@ static const unsigned int qt_one = 1;
 const int QSysInfo::ByteOrder = ((*((unsigned char *) &qt_one) == 0) ? BigEndian : LittleEndian);
 #endif
 
-#if defined(Q_OS_MACX)
+#if defined(Q_OS_MAC)
 
 QT_BEGIN_INCLUDE_NAMESPACE
 #include "private/qcore_mac_p.h"
 #include "qnamespace.h"
 QT_END_INCLUDE_NAMESPACE
 
+#if defined(Q_OS_OSX)
+
 Q_CORE_EXPORT OSErr qt_mac_create_fsref(const QString &file, FSRef *fsref)
 {
     return FSPathMakeRef(reinterpret_cast<const UInt8 *>(file.toUtf8().constData()), fsref, 0);
@@ -1728,17 +1738,17 @@ Q_CORE_EXPORT void qt_mac_to_pascal_string(QString s, Str255 str, TextEncoding e
 Q_CORE_EXPORT QString qt_mac_from_pascal_string(const Str255 pstr) {
     return QCFString(CFStringCreateWithPascalString(0, pstr, CFStringGetSystemEncoding()));
 }
-#endif // defined(Q_OS_MACX)
-
-#if defined(Q_OS_MAC)
+#endif // defined(Q_OS_OSX)
 
 QSysInfo::MacVersion QSysInfo::macVersion()
 {
-#ifdef Q_OS_MACX
+#if defined(Q_OS_OSX)
     SInt32 gestalt_version;
     if (Gestalt(gestaltSystemVersion, &gestalt_version) == noErr) {
         return QSysInfo::MacVersion(((gestalt_version & 0x00F0) >> 4) + 2);
     }
+#elif defined(Q_OS_IOS)
+    return qt_ios_version(); // qtcore_mac_objc.mm
 #endif
     return QSysInfo::MV_Unknown;
 }

src/corelib/global/qsysinfo.h

@@ -120,6 +120,7 @@ public:
 
 #endif
 #ifdef Q_OS_MAC
+#  define Q_MV_IOS(major, minor) (QSysInfo::MV_IOS | major << 4 | minor)
     enum MacVersion {
         MV_Unknown = 0x0000,
 
@@ -146,7 +147,17 @@ public:
         MV_SNOWLEOPARD = MV_10_6,
         MV_LION = MV_10_7,
         MV_MOUNTAINLION = MV_10_8,
-        MV_MAVERICKS = MV_10_9
+        MV_MAVERICKS = MV_10_9,
+
+        /* iOS */
+        MV_IOS     = 1 << 8,
+        MV_IOS_4_3 = Q_MV_IOS(4, 3),
+        MV_IOS_5_0 = Q_MV_IOS(5, 0),
+        MV_IOS_5_1 = Q_MV_IOS(5, 1),
+        MV_IOS_6_0 = Q_MV_IOS(6, 0),
+        MV_IOS_6_1 = Q_MV_IOS(6, 1),
+        MV_IOS_7_0 = Q_MV_IOS(7, 0),
+        MV_IOS_7_1 = Q_MV_IOS(7, 1)
     };
     static const MacVersion MacintoshVersion;
     static MacVersion macVersion();

src/corelib/kernel/qcore_mac_objc.mm

@@ -41,6 +41,10 @@
 
 #include <private/qcore_mac_p.h>
 
+#ifdef Q_OS_IOS
+#import <UIKit/UIKit.h>
+#endif
+
 QT_BEGIN_NAMESPACE
 
 NSString *QCFString::toNSString(const QString &string)
@@ -54,5 +58,26 @@ QString QCFString::toQString(const NSString *nsstr)
     return toQString(reinterpret_cast<CFStringRef>(nsstr));
 }
 
+#ifdef Q_OS_IOS
+QSysInfo::MacVersion qt_ios_version()
+{
+    int major = 0, minor = 0;
+    NSArray *components = [[UIDevice currentDevice].systemVersion componentsSeparatedByString:@"."];
+    switch ([components count]) {
+    case 3:
+        // We don't care about the patch version
+    case 2:
+        minor = [[components objectAtIndex:1] intValue];
+        // fall through
+    case 1:
+        major = [[components objectAtIndex:0] intValue];
+        break;
+    default:
+        Q_UNREACHABLE();
+    }
+    return QSysInfo::MacVersion(Q_MV_IOS(major, minor));
+}
+#endif
+
 QT_END_NAMESPACE
 

src/corelib/kernel/qcore_mac_p.h

@@ -143,6 +143,10 @@ private:
     QString string;
 };
 
+#ifdef Q_OS_IOS
+QSysInfo::MacVersion qt_ios_version();
+#endif
+
 QT_END_NAMESPACE
 
 #endif // QCORE_MAC_P_H