Settings: Allow settings locations in resource file system

Pick-to: 6.6 6.5
Fixes: QTBUG-116681
Change-Id: If08f584bf83b75faf5ed0b73962b90c16fc1d016
Reviewed-by: Sami Shalayel <sami.shalayel@qt.io>
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
Reviewed-by: Semih Yavuz <semih.yavuz@qt.io>

src/core/qqmlsettings.cpp

@@ -2,15 +2,18 @@
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
 #include "qqmlsettings_p.h"
-#include <qcoreevent.h>
-#include <qcoreapplication.h>
-#include <qloggingcategory.h>
-#include <qsettings.h>
-#include <qpointer.h>
-#include <qjsvalue.h>
-#include <qqmlinfo.h>
-#include <qdebug.h>
-#include <qhash.h>
+
+#include <QtQml/qjsvalue.h>
+#include <QtQml/qqmlfile.h>
+#include <QtQml/qqmlinfo.h>
+
+#include <QtCore/qcoreapplication.h>
+#include <QtCore/qcoreevent.h>
+#include <QtCore/qdebug.h>
+#include <QtCore/qhash.h>
+#include <QtCore/qloggingcategory.h>
+#include <QtCore/qpointer.h>
+#include <QtCore/qsettings.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -236,7 +239,9 @@ QSettings *QQmlSettingsPrivate::instance() const
         return settings;
 
     QQmlSettings *q = const_cast<QQmlSettings *>(q_func());
-    settings = location.isLocalFile() ? new QSettings(location.toLocalFile(), QSettings::IniFormat, q) : new QSettings(q);
+    settings = QQmlFile::isLocalFile(location)
+            ? new QSettings(QQmlFile::urlToLocalFileOrQrc(location), QSettings::IniFormat, q)
+            : new QSettings(q);
 
     if (settings->status() != QSettings::NoError) {
         // TODO: can't print out the enum due to the following error:

tests/auto/core/qqmlsettings/CMakeLists.txt

@@ -23,6 +23,13 @@ qt_internal_add_test(tst_qqmlsettings
     TESTDATA ${test_data}
 )
 
+qt_add_resources(tst_qqmlsettings "test_settings"
+    PREFIX
+        "/"
+    FILES
+        "test_settings.ini"
+)
+
 qt_internal_extend_target(tst_qqmlsettings CONDITION ANDROID OR IOS
     DEFINES
         QT_QMLTEST_DATADIR=":/data"

tests/auto/core/qqmlsettings/data/resources.qml

@@ -0,0 +1,10 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+import QtQml
+import QtCore
+
+Settings {
+    category: "test"
+    location: "qrc:/test_settings.ini"
+    property string text
+}

tests/auto/core/qqmlsettings/test_settings.ini

@@ -0,0 +1,3 @@
+# ini file in resources
+[test]
+text=from resource

tests/auto/core/qqmlsettings/tst_qqmlsettings.cpp

@@ -33,6 +33,7 @@ private slots:
     void siblings();
     void initial();
     void noApplicationIdentifiersSet();
+    void fromResources();
 };
 
 // ### Replace keyValueMap("foo", "bar") with QVariantMap({{"foo", "bar"}})
@@ -493,6 +494,17 @@ void tst_QQmlSettings::noApplicationIdentifiersSet()
     QVERIFY(!settings.value("success").toBool());
 }
 
+void tst_QQmlSettings::fromResources()
+{
+    QQmlEngine engine;
+    QQmlComponent component(&engine, testFileUrl("resources.qml"));
+    QVERIFY2(component.isReady(), qPrintable(component.errorString()));
+    QScopedPointer<QObject> root(component.create());
+    QVERIFY(!root.isNull());
+
+    QCOMPARE(root->property("text").toString(), QLatin1String("from resource"));
+}
+
 QTEST_MAIN(tst_QQmlSettings)
 
 #include "tst_qqmlsettings.moc"