1 files changed, 150 insertions, 0 deletions
diff --git a/desktop/source/app/langselect.cxx b/desktop/source/app/langselect.cxx
new file mode 100644
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+++ b/desktop/source/app/langselect.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <com/sun/star/configuration/theDefaultProvider.hpp>
+#include <com/sun/star/container/XNameAccess.hpp>
+#include <com/sun/star/lang/XLocalizable.hpp>
+#include <com/sun/star/uno/Exception.hpp>
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <comphelper/configuration.hxx>
+#include <comphelper/processfactory.hxx>
+#include <i18nlangtag/lang.h>
+#include <i18nlangtag/languagetag.hxx>
+#include <i18nlangtag/mslangid.hxx>
+#include <officecfg/Office/Linguistic.hxx>
+#include <officecfg/Setup.hxx>
+#include <officecfg/System.hxx>
+#include <rtl/ustring.hxx>
+#include <svl/languageoptions.hxx>
+#include <svtools/langhelp.hxx>
+#include <tools/diagnose_ex.h>
+
+#include <app.hxx>
+
+#include "cmdlineargs.hxx"
+#include "langselect.hxx"
+
+namespace desktop::langselect {
+
+namespace {
+
+OUString foundLocale;
+
+void setMsLangIdFallback(OUString const & locale) {
+    // #i32939# setting of default document language
+    // See #i42730# for rules for determining source of settings
+    if (locale.isEmpty())
+        return;
+
+    LanguageType type = LanguageTag::convertToLanguageTypeWithFallback(locale);
+    switch (SvtLanguageOptions::GetScriptTypeOfLanguage(type)) {
+    case SvtScriptType::ASIAN:
+        MsLangId::setConfiguredAsianFallback(type);
+        break;
+    case SvtScriptType::COMPLEX:
+        MsLangId::setConfiguredComplexFallback(type);
+        break;
+    default:
+        MsLangId::setConfiguredWesternFallback(type);
+        break;
+    }
+}
+
+}
+
+bool prepareLocale() {
+    // #i42730# Get the windows 16Bit locale, it should be preferred over the UI
+    // locale:
+    setMsLangIdFallback(officecfg::System::L10N::SystemLocale::get());
+    // #i32939# Use system locale to set document default locale:
+    setMsLangIdFallback(officecfg::System::L10N::Locale::get());
+    css::uno::Sequence<OUString> inst(
+        officecfg::Setup::Office::InstalledLocales::get()->getElementNames());
+    OUString locale(officecfg::Office::Linguistic::General::UILocale::get());
+    if (!locale.isEmpty()) {
+        locale = getInstalledLocaleForLanguage(inst, locale);
+        if (locale.isEmpty()) {
+            // Selected language is not/no longer installed:
+            try {
+                std::shared_ptr<comphelper::ConfigurationChanges> batch(
+                    comphelper::ConfigurationChanges::create());
+                officecfg::Office::Linguistic::General::UILocale::set(
+                    "", batch);
+                batch->commit();
+            } catch (const css::uno::Exception &) {
+                TOOLS_WARN_EXCEPTION("desktop.app", "ignoring");
+            }
+        }
+    }
+    bool cmdLanguage = false;
+    if (locale.isEmpty()) {
+        locale = getInstalledLocaleForLanguage(
+            inst, Desktop::GetCommandLineArgs().GetLanguage());
+        if (!locale.isEmpty()) {
+            cmdLanguage = true;
+        }
+    }
+    if (locale.isEmpty()) {
+        locale = getInstalledLocaleForSystemUILanguage(inst, true);
+    }
+    if (locale.isEmpty()) {
+        return false;
+    }
+    LanguageTag tag(locale);
+    // Prepare default config provider by localizing it to the selected
+    // locale this will ensure localized configuration settings to be
+    // selected according to the UI language:
+    css::uno::Reference<css::lang::XLocalizable>(
+        css::configuration::theDefaultProvider::get(
+            comphelper::getProcessComponentContext()),
+        css::uno::UNO_QUERY_THROW)->setLocale(tag.getLocale(false));
+    if (!cmdLanguage) {
+        try {
+            std::shared_ptr<comphelper::ConfigurationChanges> batch(
+                comphelper::ConfigurationChanges::create());
+            officecfg::Setup::L10N::ooLocale::set(locale, batch);
+            batch->commit();
+        } catch (const css::uno::Exception &) {
+            TOOLS_WARN_EXCEPTION("desktop.app", "ignoring");
+        }
+    }
+    MsLangId::setConfiguredSystemUILanguage(tag.getLanguageType(false));
+
+    OUString setupSysLoc(officecfg::Setup::L10N::ooSetupSystemLocale::get());
+    LanguageTag::setConfiguredSystemLanguage(
+        setupSysLoc.isEmpty()
+        ? MsLangId::getSystemLanguage()
+        : LanguageTag(setupSysLoc).getLanguageType(false));
+    // #i32939# setting of default document locale
+    // #i32939# this should not be based on the UI language
+    // So obtain the system locale now configured just above and pass it on,
+    // resolved of course.
+    LanguageTag docTag(LANGUAGE_SYSTEM);
+    setMsLangIdFallback(docTag.getBcp47());
+
+    foundLocale = locale;
+    return true;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */