Add conversion functions for QTimeZone and CFTimeZone/NSTimeZone

Change-Id: I3a2e18d69577296bf612e13e40414bce1daa6a71
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

4 files changed, 90 insertions, 7 deletions

diff --git a/src/corelib/kernel/qcore_foundation.mm b/src/corelib/kernel/qcore_foundation.mm
index f5ccd1c1f2..8b6be9b08e 100644
--- a/src/corelib/kernel/qcore_foundation.mm
+++ b/src/corelib/kernel/qcore_foundation.mm
@@ -46,6 +46,13 @@
 #include <QtCore/qbytearray.h>
 #include <QtCore/qrect.h>
 
+#if QT_CONFIG(timezone) && !defined(QT_NO_SYSTEMLOCALE)
+#include <QtCore/qtimezone.h>
+#include <QtCore/private/qtimezoneprivate_p.h>
+#include <QtCore/private/qcore_mac_p.h>
+#endif
+
+#import <CoreFoundation/CoreFoundation.h>
 #import <Foundation/Foundation.h>
 
 #if defined(QT_PLATFORM_UIKIT)
@@ -422,6 +429,67 @@ NSDate *QDateTime::toNSDate() const
 
 // ----------------------------------------------------------------------------
 
+#if QT_CONFIG(timezone) && !defined(QT_NO_SYSTEMLOCALE)
+/*!
+    \since 5.9
+
+    Constructs a new QTimeZone containing a copy of the CFTimeZone \a timeZone.
+
+    \sa toCFTimeZone()
+*/
+QTimeZone QTimeZone::fromCFTimeZone(CFTimeZoneRef timeZone)
+{
+    if (!timeZone)
+        return QTimeZone();
+    return QTimeZone(QString::fromCFString(CFTimeZoneGetName(timeZone)).toLatin1());
+}
+
+/*!
+    \since 5.9
+
+    Creates a CFTimeZone from a QTimeZone. The caller owns the CFTimeZone object
+    and is responsible for releasing it.
+
+    \sa fromCFTimeZone()
+*/
+CFTimeZoneRef QTimeZone::toCFTimeZone() const
+{
+#ifndef QT_NO_DYNAMIC_CAST
+    Q_ASSERT(dynamic_cast<const QMacTimeZonePrivate *>(d.data()));
+#endif
+    const QMacTimeZonePrivate *p = static_cast<const QMacTimeZonePrivate *>(d.data());
+    return reinterpret_cast<CFTimeZoneRef>([p->nsTimeZone() copy]);
+}
+
+/*!
+    \since 5.9
+
+    Constructs a new QTimeZone containing a copy of the NSTimeZone \a timeZone.
+
+    \sa toNSTimeZone()
+*/
+QTimeZone QTimeZone::fromNSTimeZone(const NSTimeZone *timeZone)
+{
+    if (!timeZone)
+        return QTimeZone();
+    return QTimeZone(QString::fromNSString(timeZone.name).toLatin1());
+}
+
+/*!
+    \since 5.9
+
+    Creates an NSTimeZone from a QTimeZone. The NSTimeZone object is autoreleased.
+
+    \sa fromNSTimeZone()
+*/
+NSTimeZone *QTimeZone::toNSTimeZone() const
+{
+    return [static_cast<NSTimeZone *>(toCFTimeZone()) autorelease];
+}
+#endif
+
+// ----------------------------------------------------------------------------
+
 /*!
     \since 5.8
 
diff --git a/src/corelib/tools/qtimezone.h b/src/corelib/tools/qtimezone.h
index 083f87f39f..bd87139f5b 100644
--- a/src/corelib/tools/qtimezone.h
+++ b/src/corelib/tools/qtimezone.h
@@ -47,6 +47,11 @@
 
 QT_REQUIRE_CONFIG(timezone);
 
+#if (defined(Q_OS_DARWIN) || defined(Q_QDOC)) && !defined(QT_NO_SYSTEMLOCALE)
+Q_FORWARD_DECLARE_CF_TYPE(CFTimeZone);
+Q_FORWARD_DECLARE_OBJC_CLASS(NSTimeZone);
+#endif
+
 QT_BEGIN_NAMESPACE
 
 class QTimeZonePrivate;
@@ -142,6 +147,13 @@ public:
     static QList<QByteArray> windowsIdToIanaIds(const QByteArray &windowsId,
                                                  QLocale::Country country);
 
+#if (defined(Q_OS_DARWIN) || defined(Q_QDOC)) && !defined(QT_NO_SYSTEMLOCALE)
+    static QTimeZone fromCFTimeZone(CFTimeZoneRef timeZone);
+    CFTimeZoneRef toCFTimeZone() const Q_DECL_CF_RETURNS_RETAINED;
+    static QTimeZone fromNSTimeZone(const NSTimeZone *timeZone);
+    NSTimeZone *toNSTimeZone() const Q_DECL_NS_RETURNS_AUTORELEASED;
+#endif
+
 private:
     QTimeZone(QTimeZonePrivate &dd);
 #ifndef QT_NO_DATASTREAM
diff --git a/src/corelib/tools/qtimezoneprivate_mac.mm b/src/corelib/tools/qtimezoneprivate_mac.mm
index 5dfffeaf36..0c2dbe6fef 100644
--- a/src/corelib/tools/qtimezoneprivate_mac.mm
+++ b/src/corelib/tools/qtimezoneprivate_mac.mm
@@ -273,4 +273,9 @@ QList<QByteArray> QMacTimeZonePrivate::availableTimeZoneIds() const
     return list;
 }
 
+NSTimeZone *QMacTimeZonePrivate::nsTimeZone() const
+{
+    return m_nstz;
+}
+
 QT_END_NAMESPACE
diff --git a/src/corelib/tools/qtimezoneprivate_p.h b/src/corelib/tools/qtimezoneprivate_p.h
index c397c18aac..682edd3996 100644
--- a/src/corelib/tools/qtimezoneprivate_p.h
+++ b/src/corelib/tools/qtimezoneprivate_p.h
@@ -60,13 +60,9 @@
 #include <unicode/ucal.h>
 #endif
 
-#ifdef Q_OS_MAC
-#ifdef __OBJC__
-@class NSTimeZone;
-#else
-class NSTimeZone;
-#endif // __OBJC__
-#endif // Q_OS_MAC
+#ifdef Q_OS_DARWIN
+Q_FORWARD_DECLARE_OBJC_CLASS(NSTimeZone);
+#endif // Q_OS_DARWIN
 
 #ifdef Q_OS_WIN
 #include <qt_windows.h>
@@ -380,6 +376,8 @@ public:
 
     QList<QByteArray> availableTimeZoneIds() const Q_DECL_OVERRIDE;
 
+    NSTimeZone *nsTimeZone() const;
+
 private:
     void init(const QByteArray &zoneId);