Changed : using gettext_i18n instead of embedding the code.

lib/src/app.dart

@@ -1,9 +1,9 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:provider/provider.dart';
+import 'package:gettext_i18n/gettext_i18n.dart';
 
 import 'globals.dart';
-import 'i18n/quickgui_localizations_delegate.dart';
 import 'mixins/preferences_mixin.dart';
 import 'model/app_theme.dart';
 import 'pages/main_page.dart';
@@ -56,7 +56,7 @@ class _AppState extends State<App> with PreferencesMixin {
                 Locale('fr', 'CH'),
               ],
               localizationsDelegates: [
-                QuickguiLocalizationsDelegate(),
+                GettextLocalizationsDelegate(),
                 GlobalMaterialLocalizations.delegate,
                 GlobalWidgetsLocalizations.delegate,
               ],

lib/src/i18n/i18n_ext.dart

@@ -1,7 +0,0 @@
-import 'package:flutter/material.dart';
-
-import 'quickgui_localizations.dart';
-
-extension I18nExt on BuildContext {
-  t(String key, {List<Object>? args}) => QuickguiLocalizations.of(this).t(key, args);
-}

lib/src/i18n/quickgui_localizations.dart

@@ -1,39 +0,0 @@
-import 'package:flutter/foundation.dart';
-import 'package:flutter/material.dart';
-import 'package:gettext/gettext.dart';
-import 'package:gettext_parser/gettext_parser.dart' as gettext_parser;
-import 'package:quiver/iterables.dart';
-
-class QuickguiLocalizations {
-  final _gt = Gettext(
-    onWarning: ((message) {
-      if (kDebugMode) {
-        // ignore: avoid_print
-        print('$message\n');
-        final r = RegExp(r'^No translation was found for msgid "(.*)" in msgctxt "(.*)" and domain "(.*)"$');
-        final matches = r.firstMatch(message);
-        var msgid = matches!.group(1);
-        // ignore: avoid_print
-        print('\nmsgid "$msgid"\nmsgstr ""\n \n');
-      }
-    }),
-  );
-
-  QuickguiLocalizations.fromPO(String poContent) {
-    _gt.addLocale(gettext_parser.po.parse(poContent));
-  }
-
-  static QuickguiLocalizations of(BuildContext context) => Localizations.of<QuickguiLocalizations>(context, QuickguiLocalizations)!;
-
-  String t(String key, List<Object>? args) {
-    var message = _gt.gettext(key);
-
-    if (args != null) {
-      for (var i in range(args.length)) {
-        message = message.replaceAll('{$i}', args[i.toInt()].toString());
-      }
-    }
-
-    return message;
-  }
-}

lib/src/i18n/quickgui_localizations_delegate.dart

@@ -1,31 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
-
-import 'quickgui_localizations.dart';
-
-class QuickguiLocalizationsDelegate
-    extends LocalizationsDelegate<QuickguiLocalizations> {
-  @override
-  bool isSupported(Locale locale) => true;
-
-  @override
-  Future<QuickguiLocalizations> load(Locale locale) async {
-    var poContent = '';
-    try {
-      poContent = await rootBundle.loadString('assets/i18n/${locale.languageCode}_${locale.countryCode}.po');
-    } catch (e) {
-      try {
-        poContent = await rootBundle.loadString('assets/i18n/${locale.languageCode}.po');
-      } catch (e) {
-        poContent = await rootBundle.loadString('assets/i18n/en.po');
-      }
-    }
-
-    return QuickguiLocalizations.fromPO(poContent);
-  }
-
-  @override
-  bool shouldReload(
-          covariant LocalizationsDelegate<QuickguiLocalizations> old) =>
-      true;
-}

lib/src/pages/downloader.dart

@@ -4,6 +4,7 @@ import 'dart:io';
 
 import 'package:desktop_notifications/desktop_notifications.dart';
 import 'package:flutter/material.dart';
+import 'package:gettext_i18n/gettext_i18n.dart';
 
 import '../model/operating_system.dart';
 import '../model/option.dart';
@@ -11,7 +12,6 @@ import '../model/version.dart';
 import '../widgets/downloader/cancel_dismiss_button.dart';
 import '../widgets/downloader/download_label.dart';
 import '../widgets/downloader/download_progress_bar.dart';
-import '../i18n/i18n_ext.dart';
 
 class Downloader extends StatefulWidget {
   const Downloader({

lib/src/pages/downloader_page.dart

@@ -1,8 +1,8 @@
 import 'package:flutter/material.dart';
+import 'package:gettext_i18n/gettext_i18n.dart';
 
 import '../widgets/home_page/downloader_menu.dart';
 import '../widgets/home_page/logo.dart';
-import '../i18n/i18n_ext.dart';
 
 class DownloaderPage extends StatelessWidget {
   const DownloaderPage({Key? key}) : super(key: key);

lib/src/pages/main_page.dart

@@ -1,9 +1,9 @@
 import 'package:flutter/material.dart';
+import 'package:gettext_i18n/gettext_i18n.dart';
 
 import '../widgets/home_page/logo.dart';
 import '../widgets/home_page/main_menu.dart';
 import '../widgets/left_menu.dart';
-import '../i18n/i18n_ext.dart';
 
 class MainPage extends StatefulWidget {
   const MainPage({Key? key, required this.title}) : super(key: key);

lib/src/pages/manager.dart

@@ -1,16 +1,17 @@
 import 'dart:async';
 import 'dart:convert';
 import 'dart:core';
+import 'dart:io';
+
 import 'package:flutter/material.dart';
 import 'package:path/path.dart' as path;
 import 'package:file_picker/file_picker.dart';
 import 'package:flutter_svg/flutter_svg.dart';
-import 'dart:io';
+import 'package:gettext_i18n/gettext_i18n.dart';
 
 import '../globals.dart';
 import '../model/vminfo.dart';
 import '../mixins/preferences_mixin.dart';
-import '../i18n/i18n_ext.dart';
 
 /// VM manager page.
 /// Displays a list of available VMs, running state and connection info,

lib/src/pages/operating_system_selection.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
+import 'package:gettext_i18n/gettext_i18n.dart';
 
 import '../model/operating_system.dart';
-import '../i18n/i18n_ext.dart';
 
 class OperatingSystemSelection extends StatefulWidget {
   const OperatingSystemSelection({Key? key}) : super(key: key);

lib/src/pages/option_selection.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
+import 'package:gettext_i18n/gettext_i18n.dart';
 
 import '../model/version.dart';
-import '../i18n/i18n_ext.dart';
 
 class OptionSelection extends StatefulWidget {
   const OptionSelection(this.version, {Key? key}) : super(key: key);

lib/src/pages/version_selection.dart

@@ -1,10 +1,10 @@
 import 'package:flutter/material.dart';
 import 'package:tuple/tuple.dart';
+import 'package:gettext_i18n/gettext_i18n.dart';
 
 import '../model/operating_system.dart';
 import '../model/option.dart';
 import '../model/version.dart';
-import '../i18n/i18n_ext.dart';
 import 'option_selection.dart';
 
 class VersionSelection extends StatefulWidget {

lib/src/widgets/downloader/cancel_dismiss_button.dart

@@ -1,6 +1,5 @@
 import 'package:flutter/material.dart';
-
+import 'package:gettext_i18n/gettext_i18n.dart';
-import '../../i18n/i18n_ext.dart';
 
 class CancelDismissButton extends StatelessWidget {
   const CancelDismissButton({

lib/src/widgets/downloader/download_label.dart

@@ -1,6 +1,5 @@
 import 'package:flutter/material.dart';
-
+import 'package:gettext_i18n/gettext_i18n.dart';
-import '../../i18n/i18n_ext.dart';
 
 class DownloadLabel extends StatelessWidget {
   const DownloadLabel(

lib/src/widgets/home_page/home_page_button_group.dart

@@ -3,6 +3,7 @@ import 'dart:io';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:tuple/tuple.dart';
+import 'package:gettext_i18n/gettext_i18n.dart';
 
 import '../../model/operating_system.dart';
 import '../../model/option.dart';
@@ -10,7 +11,6 @@ import '../../model/version.dart';
 import '../../pages/downloader.dart';
 import '../../pages/operating_system_selection.dart';
 import '../../pages/version_selection.dart';
-import '../../i18n/i18n_ext.dart';
 import '../home_page/home_page_button.dart';
 
 class HomePageButtonGroup extends StatefulWidget {

lib/src/widgets/home_page/main_menu.dart

@@ -1,8 +1,8 @@
 import 'package:flutter/material.dart';
+import 'package:gettext_i18n/gettext_i18n.dart';
 
 import '../../pages/downloader_page.dart';
 import '../../pages/manager.dart';
-import '../../i18n/i18n_ext.dart';
 import '../home_page/home_page_button.dart';
 
 class MainMenu extends StatelessWidget {

lib/src/widgets/left_menu.dart

@@ -1,12 +1,12 @@
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+import 'package:gettext_i18n/gettext_i18n.dart';
 
 import '../globals.dart';
 import '../mixins/app_version.dart';
 import '../mixins/preferences_mixin.dart';
 import '../model/app_theme.dart';
-import '../i18n/i18n_ext.dart';
 
 class LeftMenu extends StatelessWidget with PreferencesMixin {
   const LeftMenu({Key? key}) : super(key: key);

pubspec.yaml

@@ -52,6 +52,7 @@ dependencies:
     sdk: flutter
   desktop_notifications: ^0.6.1
   flutter_svg: ^0.23.0
+  gettext_i18n: ^1.0.2
 
 dev_dependencies:
   flutter_test: