Enable loading/generating translations by assistant and linguist tools

QTranslator is installed in tools (qcollectiongenerator, qhelpconverter,
qhelpgenerator, lconvert, lrelease, lupdate).
Build targets that updates .ts files are changed to include strings from
this tools.

Merge-request: 2456
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

3 files changed, 49 insertions, 4 deletions

diff --git a/tools/assistant/tools/qcollectiongenerator/main.cpp b/tools/assistant/tools/qcollectiongenerator/main.cpp
index b3f6bd9544..41bf281e59 100644
--- a/tools/assistant/tools/qcollectiongenerator/main.cpp
+++ b/tools/assistant/tools/qcollectiongenerator/main.cpp
@@ -49,9 +49,11 @@
 #include <QtCore/QDir>
 #include <QtCore/QMap>
 #include <QtCore/QFileInfo>
-#include <QtCore/QCoreApplication>
 #include <QtCore/QDateTime>
 #include <QtCore/QBuffer>
+#include <QtCore/QTranslator>
+#include <QtCore/QLocale>
+#include <QtCore/QLibraryInfo>
 #include <QtHelp/QHelpEngineCore>
 #include <QtXml/QXmlStreamReader>
 
@@ -350,6 +352,20 @@ int main(int argc, char *argv[])
     bool showHelp = false;
     bool showVersion = false;
 
+    QCoreApplication app(argc, argv);
+    QTranslator translator;
+    QTranslator qtTranslator;
+    QTranslator qt_helpTranslator;
+    QString sysLocale = QLocale::system().name();
+    QString resourceDir = QLibraryInfo::location(QLibraryInfo::TranslationsPath);
+    if (translator.load(QLatin1String("assistant_") + sysLocale, resourceDir)
+        && qtTranslator.load(QLatin1String("qt_") + sysLocale, resourceDir)
+        && qt_helpTranslator.load(QLatin1String("qt_help_") + sysLocale, resourceDir)) {
+        app.installTranslator(&translator);
+        app.installTranslator(&qtTranslator);
+        app.installTranslator(&qt_helpTranslator);
+    }
+
     for (int i=1; i<argc; ++i) {
         arg = QString::fromLocal8Bit(argv[i]);
         if (arg == QLatin1String("-o")) {
@@ -410,8 +426,6 @@ int main(int argc, char *argv[])
             + fi.baseName() + QLatin1String(".qhc");
     }
 
-    QCoreApplication app(argc, argv);
-
     fprintf(stdout, "Reading collection config file...\n");
     CollectionConfigReader config;
     config.readData(file.readAll());
diff --git a/tools/assistant/tools/qhelpconverter/main.cpp b/tools/assistant/tools/qhelpconverter/main.cpp
index 4b1d81520c..5ee624de64 100644
--- a/tools/assistant/tools/qhelpconverter/main.cpp
+++ b/tools/assistant/tools/qhelpconverter/main.cpp
@@ -40,6 +40,9 @@
 ****************************************************************************/
 
 #include <QtCore/QFileInfo>
+#include <QtCore/QTranslator>
+#include <QtCore/QLocale>
+#include <QtCore/QLibraryInfo>
 #include <QtGui/QApplication>
 
 #include "conversionwizard.h"
@@ -49,6 +52,18 @@ QT_USE_NAMESPACE
 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
+    QTranslator translator;
+    QTranslator qtTranslator;
+    QTranslator qt_helpTranslator;
+    QString sysLocale = QLocale::system().name();
+    QString resourceDir = QLibraryInfo::location(QLibraryInfo::TranslationsPath);
+    if (translator.load(QLatin1String("assistant_") + sysLocale, resourceDir)
+        && qtTranslator.load(QLatin1String("qt_") + sysLocale, resourceDir)
+        && qt_helpTranslator.load(QLatin1String("qt_help_") + sysLocale, resourceDir)) {
+        app.installTranslator(&translator);
+        app.installTranslator(&qtTranslator);
+        app.installTranslator(&qt_helpTranslator);
+    }
 
     ConversionWizard w;
     if (argc == 2) {
diff --git a/tools/assistant/tools/qhelpgenerator/main.cpp b/tools/assistant/tools/qhelpgenerator/main.cpp
index a309f424d2..7ea7154572 100644
--- a/tools/assistant/tools/qhelpgenerator/main.cpp
+++ b/tools/assistant/tools/qhelpgenerator/main.cpp
@@ -44,6 +44,9 @@
 #include <QtCore/QDir>
 #include <QtCore/QFileInfo>
 #include <QtCore/QCoreApplication>
+#include <QtCore/QTranslator>
+#include <QtCore/QLocale>
+#include <QtCore/QLibraryInfo>
 
 #include <private/qhelpprojectdata_p.h>
 
@@ -60,6 +63,20 @@ int main(int argc, char *argv[])
     bool showVersion = false;
     bool checkLinks = false;
 
+    QCoreApplication app(argc, argv);
+    QTranslator translator;
+    QTranslator qtTranslator;
+    QTranslator qt_helpTranslator;
+    QString sysLocale = QLocale::system().name();
+    QString resourceDir = QLibraryInfo::location(QLibraryInfo::TranslationsPath);
+    if (translator.load(QLatin1String("assistant_") + sysLocale, resourceDir)
+        && qtTranslator.load(QLatin1String("qt_") + sysLocale, resourceDir)
+        && qt_helpTranslator.load(QLatin1String("qt_help_") + sysLocale, resourceDir)) {
+        app.installTranslator(&translator);
+        app.installTranslator(&qtTranslator);
+        app.installTranslator(&qt_helpTranslator);
+    }
+
     for (int i = 1; i < argc; ++i) {
         arg = QString::fromLocal8Bit(argv[i]);
         if (arg == QLatin1String("-o")) {
@@ -142,7 +159,6 @@ int main(int argc, char *argv[])
         return -1;
     }
 
-    QCoreApplication app(argc, argv);
     HelpGenerator generator;
     bool success = true;
     if (checkLinks)