citra_qt/configure_ui: Show country of language in the combobox

This prevents an issue where we had seperate versions of the same language for different regions and they were not distinguishable (e.g. "Chinese (China)" and "Chinese (Taiwan)").

Also makes it so we do not need to hardcode specific languages anymore.

src/yuzu/configuration/configure_ui.cpp

@@ -248,82 +248,22 @@ void ConfigureUi::RetranslateUI() {
 }
 
 void ConfigureUi::InitializeLanguageComboBox() {
-    // This is a list of lexicographically sorted languages, only the available translations are
-    // shown to the user.
-    static const struct {
-        const QString name;
-        const char* id;
-    } languages[] = {
-        // clang-format off
-        {QStringLiteral(u"Bahasa Indonesia"), "id"},                                 // Indonesian
-        {QStringLiteral(u"Bahasa Melayu"), "ms"},                                    // Malay
-        {QStringLiteral(u"Catal\u00E0"), "ca"},                                      // Catalan
-        {QStringLiteral(u"\u010Ce\u0161tina"), "cs"},                                // Czech
-        {QStringLiteral(u"Dansk"), "da"},                                            // Danish
-        {QStringLiteral(u"Deutsch"), "de"},                                          // German
-        {QStringLiteral(u"English"), "en"},                                          // English
-        {QStringLiteral(u"Espa\u00F1ol"), "es"},                                     // Spanish
-        {QStringLiteral(u"Fran\u00E7ais"), "fr"},                                    // French
-        {QStringLiteral(u"Hrvatski"), "hr"},                                         // Croatian
-        {QStringLiteral(u"Italiano"), "it"},                                         // Italian
-        {QStringLiteral(u"Magyar"), "hu"},                                           // Hungarian
-        {QStringLiteral(u"Nederlands"), "nl"},                                       // Dutch
-        {QStringLiteral(u"Norsk bokm\u00E5l"), "nb"},                                // Norwegian
-        {QStringLiteral(u"Polski"), "pl"},                                           // Polish
-        {QStringLiteral(u"Portugu\u00EAs"), "pt_PT"},                                // Portuguese
-        {QStringLiteral(u"Portugu\u00EAs (Brasil)"), "pt_BR"},                       // Portuguese (Brazil)
-        {QStringLiteral(u"Rom\u00E2n\u0103"), "ro"},                                 // Romanian
-        {QStringLiteral(u"Srpski"), "sr"},                                           // Serbian
-        {QStringLiteral(u"Suomi"), "fi"},                                            // Finnish
-        {QStringLiteral(u"Svenska"), "sv"},                                          // Swedish
-        {QStringLiteral(u"Ti\u1EBFng Vi\u1EC7t"), "vi"},                             // Vietnamese
-        {QStringLiteral(u"Ti\u1EBFng Vi\u1EC7t (Vi\u1EC7t Nam)"), "vi_VN"},          // Vietnamese
-        {QStringLiteral(u"T\u00FCrk\u00E7e"), "tr_TR"},                              // Turkish
-        {QStringLiteral(u"\u0395\u03BB\u03BB\u03B7\u03BD\u03B9\u03BA\u03AC"), "el"}, // Greek
-        {QStringLiteral(u"\u0420\u0443\u0441\u0441\u043A\u0438\u0439"), "ru_RU"},    // Russian
-        {QStringLiteral(u"\u0423\u043A\u0440\u0430\u0457\u043D\u0441\u044C\u043A\u0430"),
-         "uk"},                                                                      // Ukrainian
-        {QStringLiteral(u"\u0627\u0644\u0639\u0631\u0628\u064A\u0629"), "ar"},       // Arabic
-        {QStringLiteral(u"\u0641\u0627\u0631\u0633\u06CC"), "fa"},                   // Farsi
-        {QStringLiteral(u"\uD55C\uAD6D\uC5B4"), "ko_KR"},                            // Korean
-        {QStringLiteral(u"\u65E5\u672C\u8A9E"), "ja_JP"},                            // Japanese
-        {QStringLiteral(u"\u7B80\u4F53\u4E2D\u6587"), "zh_CN"},                      // Simplified Chinese
-        {QStringLiteral(u"\u7E41\u9AD4\u4E2D\u6587"), "zh_TW"},                      // Traditional Chinese
-        // clang-format on
-    };
     ui->language_combobox->addItem(tr("<System>"), QString{});
-    QDir languages_dir{QStringLiteral(":/languages")};
-    QStringList language_files = languages_dir.entryList();
-    for (const auto& lang : languages) {
-        if (QString::fromLatin1(lang.id) == QStringLiteral("en")) {
-            ui->language_combobox->addItem(lang.name, QStringLiteral("en"));
-            language_files.removeOne(QStringLiteral("en.qm"));
-            continue;
-        }
-        for (int i = 0; i < language_files.size(); ++i) {
-            QString locale = language_files[i];
-            locale.truncate(locale.lastIndexOf(QLatin1Char{'.'}));
-            if (QString::fromLatin1(lang.id) == locale) {
-                ui->language_combobox->addItem(lang.name, locale);
-                language_files.removeAt(i);
-                break;
-            }
-        }
-    }
-    // Anything remaining will be at the bottom
-    for (const QString& file : language_files) {
-        LOG_CRITICAL(Frontend, "Unexpected Language File: {}", file.toStdString());
-        QString locale = file;
+    ui->language_combobox->addItem(tr("English"), QStringLiteral("en"));
+    QDirIterator it(QStringLiteral(":/languages"), QDirIterator::NoIteratorFlags);
+    while (it.hasNext()) {
+        QString locale = it.next();
         locale.truncate(locale.lastIndexOf(QLatin1Char{'.'}));
-        const QString language_name = QLocale::languageToString(QLocale(locale).language());
-        const QString lang = QStringLiteral("%1 [%2]").arg(language_name, locale);
-        ui->language_combobox->addItem(lang, locale);
+        locale.remove(0, locale.lastIndexOf(QLatin1Char{'/'}) + 1);
+        const QString lang = QLocale::languageToString(QLocale(locale).language());
+        const QString country = QLocale::countryToString(QLocale(locale).country());
+        ui->language_combobox->addItem(QStringLiteral("%1 (%2)").arg(lang, country), locale);
     }
 
     // Unlike other configuration changes, interface language changes need to be reflected on the
     // interface immediately. This is done by passing a signal to the main window, and then
     // retranslating when passing back.
-    connect(ui->language_combobox, QOverload<int>::of(&QComboBox::currentIndexChanged), this,
+    connect(ui->language_combobox, qOverload<int>(&QComboBox::currentIndexChanged), this,
             &ConfigureUi::OnLanguageChanged);
 }