added -lang parameter to application to be able to choose the language. Available on linux

src/core/UBApplication.cpp

@@ -135,27 +135,13 @@ UBApplication::UBApplication(const QString &id, int &argc, char **argv) : QtSing
     UBResources::resources();
 
     if (!undoStack)
-    {
         undoStack = new QUndoStack(staticMemoryCleaner);
-    }
-
-    mApplicationTranslator = new QTranslator(this);
-    mApplicationTranslator->load(UBPlatformUtils::preferredTranslation(QString("sankore_")));
-    installTranslator(mApplicationTranslator);
-
-    QString localString;
-    if (!mApplicationTranslator->isEmpty())
-        localString = UBPlatformUtils::preferredLanguage();
-    else
-        localString = "en_US";
 
-    mQtGuiTranslator = new QTranslator(this);
-    mQtGuiTranslator->load(UBPlatformUtils::preferredTranslation(QString("qt_")));
-    installTranslator(mQtGuiTranslator);
+    QString forcedLanguage("");
+    if(args.contains("-lang"))
+    	forcedLanguage=args.at(args.indexOf("-lang") + 1);
 
-
-    QLocale::setDefault(QLocale(localString));
-    qDebug() << "Running application in:" << localString;
+    setupTranslator(forcedLanguage);
 
     UBSettings *settings = UBSettings::settings();
 
@@ -217,6 +203,49 @@ UBApplication::~UBApplication()
     staticMemoryCleaner = 0;
 }
 
+
+void UBApplication::setupTranslator(QString forcedLanguage)
+{
+	QStringList availablesTranslations = UBPlatformUtils::availableTranslations();
+	QString language("");
+	if(!forcedLanguage.isEmpty()){
+		if(availablesTranslations.contains(forcedLanguage,Qt::CaseInsensitive))
+			language = forcedLanguage;
+		else
+			qDebug() << "forced language " << forcedLanguage << " not available";
+	}
+	else{
+		QString systemLanguage = UBPlatformUtils::systemLanguage();
+		if(availablesTranslations.contains(systemLanguage,Qt::CaseInsensitive))
+			language = systemLanguage;
+		else
+			qDebug() << "translation for system language " << systemLanguage << " not found";
+	}
+
+	if(language.isEmpty()){
+		language = "en_US";
+		//fallback if no translation are available
+	}
+	else{
+	    mApplicationTranslator = new QTranslator(this);
+	    mQtGuiTranslator = new QTranslator(this);
+
+	    mApplicationTranslator->load(UBPlatformUtils::translationPath(QString("sankore_"),language));
+	    installTranslator(mApplicationTranslator);
+
+
+	    mQtGuiTranslator->load(UBPlatformUtils::translationPath(QString("qt_"),language));
+	    if(mQtGuiTranslator){
+	    	// checked because this translation could be not available
+	    	installTranslator(mQtGuiTranslator);
+	    }
+	}
+
+
+    QLocale::setDefault(QLocale(language));
+    qDebug() << "Running application in:" << language;
+}
+
 int UBApplication::exec(const QString& pFileToImport)
 {
     QPixmapCache::setCacheLimit(1024 * 100);

src/core/UBApplication.h

@@ -121,6 +121,7 @@ class UBApplication : public QtSingleApplication
 
     private:
         void updateProtoActionsState();
+        void setupTranslator(QString forcedLanguage);
         QList<QMenu*> mProtoMenus;
         bool mIsVerbose;
 

src/frameworks/UBPlatformUtils.h

@@ -103,8 +103,8 @@ class UBPlatformUtils
         static void setFileType(const QString &filePath, unsigned long fileType);
         static void fadeDisplayOut();
         static void fadeDisplayIn();
-        static QString preferredTranslation(QString pFilePrefix);
-        static QString preferredLanguage();
+        static QString translationPath(QString pFilePrefix, QString pLanguage);
+        static QString systemLanguage();
         static bool hasVirtualKeyboard();
         //static void showVirtualKeyboard();
         static void runInstaller(const QString &installerFilePath);
@@ -115,6 +115,7 @@ class UBPlatformUtils
         static QString computerName();
         static UBKeyboardLocale** getKeyboardLayouts(int& nCount);
         static QString urlFromClipboard();
+        static QStringList availableTranslations();
 };
 
 

src/frameworks/UBPlatformUtils_linux.cpp

@@ -20,6 +20,8 @@
 #include <X11/Xlib.h>
 #include <X11/keysym.h>
 
+#include "frameworks/UBFileSystemUtils.h"
+
 
 void UBPlatformUtils::init()
 {
@@ -55,13 +57,22 @@ void UBPlatformUtils::fadeDisplayIn()
     // NOOP
 }
 
-QString UBPlatformUtils::preferredTranslation(QString pFilePrefix)
+QStringList UBPlatformUtils::availableTranslations()
+{
+	QString translationsPath = applicationResourcesDirectory() + "/" + "i18n" + "/";
+	QStringList translationsList = UBFileSystemUtils::allFiles(translationsPath);
+	QRegExp sankoreTranslationFiles(".*sankore_.*.qm");
+	translationsList=translationsList.filter(sankoreTranslationFiles);
+	return translationsList.replaceInStrings(QRegExp("(.*)sankore_(.*).qm"),"\\2");
+}
+
+QString UBPlatformUtils::translationPath(QString pFilePrefix,QString pLanguage)
 {
-    QString qmPath = applicationResourcesDirectory() + "/" + "i18n" + "/" + pFilePrefix + preferredLanguage() + ".qm";
+    QString qmPath = applicationResourcesDirectory() + "/" + "i18n" + "/" + pFilePrefix + pLanguage + ".qm";
     return qmPath;
 }
 
-QString UBPlatformUtils::preferredLanguage()
+QString UBPlatformUtils::systemLanguage()
 {
     return QLocale::system().name();
 }

src/frameworks/UBPlatformUtils_win.cpp

@@ -59,14 +59,22 @@ void UBPlatformUtils::fadeDisplayIn()
     // NOOP
 }
 
-QString UBPlatformUtils::preferredTranslation(QString pFilePrefix)
+QStringList UBPlatformUtils::availableTranslations()
 {
-    QString localPreferredLanguage = preferredLanguage();
-    QString qmPath = applicationResourcesDirectory() + "/" + "i18n" + "/" + pFilePrefix + localPreferredLanguage + ".qm";
+	QString translationsPath = applicationResourcesDirectory() + "/" + "i18n" + "/";
+	QStringList translationsList = UBFileSystemUtils::allFiles(translationsPath);
+	QRegExp sankoreTranslationFiles(".*sankore_.*.qm");
+	translationsList=translationsList.filter(sankoreTranslationFiles);
+	return translationsList.replaceInStrings(QRegExp("(.*)sankore_(.*).qm"),"\\2");
+}
+
+QString UBPlatformUtils::translationPath(QString pFilePrefix,QString pLanguage)
+{
+    QString qmPath = applicationResourcesDirectory() + "/" + "i18n" + "/" + pFilePrefix + pLanguage + ".qm";
     return qmPath;
 }
 
-QString UBPlatformUtils::preferredLanguage()
+QString UBPlatformUtils::systemLanguage()
 {
     return QLocale::system().name();
 }