Move settings from Nokia to QtProject

Store settings in QtProject, not Nokia. Move them over to the new
place if any settings in Nokia exist.

Task-number: QTCREATOR-7976
Change-Id: I5af77923aa51016add9079b21e78d94d46f20010
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/app/app_version.h.in

@@ -63,9 +63,16 @@ const char * const IDE_REVISION_STR      = \"\";
 #ifdef IDE_SETTINGSVARIANT
 const char * const IDE_SETTINGSVARIANT_STR      = STRINGIFY(IDE_SETTINGSVARIANT);
 #else
-const char * const IDE_SETTINGSVARIANT_STR      = \"Nokia\";
+const char * const IDE_SETTINGSVARIANT_STR      = \"QtProject\";
 #endif
 
+#ifdef IDE_COPY_SETTINGS_FROM_VARIANT
+const char * const IDE_COPY_SETTINGS_FROM_VARIANT_STR = STRINGIFY(IDE_COPY_SETTINGS_FROM_VARIANT);
+#else
+const char * const IDE_COPY_SETTINGS_FROM_VARIANT_STR = \"Nokia\";
+#endif
+
+
 #undef IDE_VERSION
 #undef IDE_VERSION_STR
 #undef STRINGIFY

src/app/main.cpp

@@ -160,6 +160,33 @@ static inline int askMsgSendFailed()
                                  QMessageBox::Retry);
 }
 
+// taken from utils/fileutils.cpp. We can not use utils here since that depends app_version.h.
+static bool copyRecursively(const QString &srcFilePath,
+                            const QString &tgtFilePath)
+{
+    QFileInfo srcFileInfo(srcFilePath);
+    if (srcFileInfo.isDir()) {
+        QDir targetDir(tgtFilePath);
+        targetDir.cdUp();
+        if (!targetDir.mkdir(QFileInfo(tgtFilePath).fileName()))
+            return false;
+        QDir sourceDir(srcFilePath);
+        QStringList fileNames = sourceDir.entryList(QDir::Files | QDir::Dirs | QDir::NoDotAndDotDot | QDir::Hidden | QDir::System);
+        foreach (const QString &fileName, fileNames) {
+            const QString newSrcFilePath
+                    = srcFilePath + QLatin1Char('/') + fileName;
+            const QString newTgtFilePath
+                    = tgtFilePath + QLatin1Char('/') + fileName;
+            if (!copyRecursively(newSrcFilePath, newTgtFilePath))
+                return false;
+        }
+    } else {
+        if (!QFile::copy(srcFilePath, tgtFilePath))
+            return false;
+    }
+    return true;
+}
+
 static inline QStringList getPluginPaths()
 {
     QStringList rc;
@@ -200,6 +227,55 @@ static inline QStringList getPluginPaths()
     return rc;
 }
 
+static QSettings *createUserSettings()
+{
+    return new QSettings(QSettings::IniFormat, QSettings::UserScope,
+                         QLatin1String(Core::Constants::IDE_SETTINGSVARIANT_STR),
+                         QLatin1String("QtCreator"));
+}
+
+static inline QSettings *userSettings()
+{
+    QSettings *settings = createUserSettings();
+    const QString fromVariant = QLatin1String(Core::Constants::IDE_COPY_SETTINGS_FROM_VARIANT_STR);
+    if (fromVariant.isEmpty())
+        return settings;
+
+    // Copy old settings to new ones:
+    QFileInfo pathFi = QFileInfo(settings->fileName());
+    if (pathFi.exists()) // already copied.
+        return settings;
+
+    QDir destDir = pathFi.absolutePath();
+    if (!destDir.exists())
+        destDir.mkpath(pathFi.absolutePath());
+
+    QDir srcDir = destDir;
+    srcDir.cdUp();
+    if (!srcDir.cd(fromVariant))
+        return settings;
+
+    if (srcDir == destDir) // Nothing to copy and no settings yet
+        return settings;
+
+    QStringList entries = srcDir.entryList();
+    foreach (const QString &file, entries) {
+        const QString lowerFile = file.toLower();
+        if (lowerFile.startsWith(QLatin1String("profiles.xml"))
+                || lowerFile.startsWith(QLatin1String("toolchains.xml"))
+                || lowerFile.startsWith(QLatin1String("qtversion.xml"))
+                || lowerFile.startsWith(QLatin1String("devices.xml"))
+                || lowerFile.startsWith(QLatin1String("qtcreator.")))
+            QFile::copy(srcDir.absoluteFilePath(file), destDir.absoluteFilePath(file));
+        if (file == QLatin1String("qtcreator"))
+            copyRecursively(srcDir.absoluteFilePath(file), destDir.absoluteFilePath(file));
+    }
+
+    // Make sure to use the copied settings:
+    delete settings;
+    return createUserSettings();
+}
+
 #ifdef Q_OS_MAC
 #  define SHARE_PATH "/../Resources"
 #else
@@ -255,9 +331,8 @@ int main(int argc, char **argv)
                        QCoreApplication::applicationDirPath() + QLatin1String(SHARE_PATH));
     QSettings::setDefaultFormat(QSettings::IniFormat);
     // plugin manager takes control of this settings object
-    QSettings *settings = new QSettings(QSettings::IniFormat, QSettings::UserScope,
-                                        QLatin1String(Core::Constants::IDE_SETTINGSVARIANT_STR),
-                                        QLatin1String("QtCreator"));
+    QSettings *settings = userSettings();
+
     QSettings *globalSettings = new QSettings(QSettings::IniFormat, QSettings::SystemScope,
                                               QLatin1String(Core::Constants::IDE_SETTINGSVARIANT_STR),
                                               QLatin1String("QtCreator"));