From fea6b191a8738c92adf644c399d020f420527312 Mon Sep 17 00:00:00 2001
From: itsmattkc <itsmattkc@gmail.com>
Date: Sat, 2 Feb 2019 00:54:09 +1100
Subject: [PATCH] cli arg to load external translation file

---
 main.cpp       | 11 +++++++++++
 mainwindow.cpp | 13 ++++++++++---
 mainwindow.h   |  3 +++
 3 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/main.cpp b/main.cpp
index 13a767cf7..48188e2a6 100644
--- a/main.cpp
+++ b/main.cpp
@@ -44,6 +44,7 @@ int main(int argc, char *argv[]) {
                            "\t--disable-shaders\tDisable OpenGL shaders (for debugging)\n"
                            "\t--no-debug\t\tDisable internal debug log and output directly to console\n"
                            "\t--disable-blend-modes\tDisable shader-based blending for older GPUs\n"
+                           "\t--translation <file>\tSet an external language file to use\n"
                            "\n", argv[0]);
 					return 0;
 				} else if (!strcmp(argv[i], "--fullscreen") || !strcmp(argv[i], "-f")) {
@@ -54,6 +55,16 @@ int main(int argc, char *argv[]) {
 					use_internal_logger = false;
 				} else if (!strcmp(argv[i], "--disable-blend-modes")) {
 					disable_blending = true;
+                } else if (!strcmp(argv[i], "--translation")) {
+                    if (i + 1 < argc && argv[i + 1][0] != '-') {
+                        // load translation file
+                        external_translation_file = argv[i + 1];
+
+                        i++;
+                    } else {
+                        printf("[ERROR] No translation file specified\n");
+                        return 1;
+                    }
 				} else {
 					printf("[ERROR] Unknown argument '%s'\n", argv[1]);
 					return 1;
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 394a09ed5..2ca0470be 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -57,6 +57,9 @@ MainWindow* mainWindow;
 #define DEFAULT_CSS "QPushButton::checked { background: rgb(25, 25, 25); }"
 #define OLIVE_FILE_FILTER "Olive Project (*.ove)"
 
+// load external translation file
+QString external_translation_file;
+
 QTimer autorecovery_timer;
 QString config_fn;
 bool demoNoticeShown = false;
@@ -207,10 +210,14 @@ MainWindow::MainWindow(QWidget *parent, const QString &an) :
 	}
 
     // load preferred language from file
-    if (!config.language_file.isEmpty()
-            && QFileInfo::exists(config.language_file)) {
+    QString language_file = external_translation_file.isEmpty() ?
+                config.language_file :
+                external_translation_file;
+
+    if (!language_file.isEmpty()
+            && QFileInfo::exists(language_file)) {
         QTranslator* translator = new QTranslator(this);
-        translator->load(config.language_file);
+        translator->load(language_file);
         QApplication::installTranslator(translator);
     }
 
diff --git a/mainwindow.h b/mainwindow.h
index b00bf28c9..4ef98ebae 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -213,4 +213,7 @@ private:
 
 extern MainWindow* mainWindow;
 
+// load external translation file
+extern QString external_translation_file;
+
 #endif // MAINWINDOW_H