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Diffstat (limited to 'src/mumble/Translations.cpp')
| -rw-r--r-- | src/mumble/Translations.cpp | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/mumble/Translations.cpp b/src/mumble/Translations.cpp new file mode 100644 index 000000000..bf93f78da --- /dev/null +++ b/src/mumble/Translations.cpp @@ -0,0 +1,107 @@ +// Copyright 2021 The Mumble Developers. All rights reserved. +// Use of this source code is governed by a BSD-style license +// that can be found in the LICENSE file at the root of the +// Mumble source tree or at <https://www.mumble.info/LICENSE>. + +#include "Translations.h" + +#include <QApplication> +#include <QtCore/QDir> +#include <QtCore/QLibraryInfo> +#include <QtCore/QStandardPaths> +#include <QtCore/QTranslator> + +namespace Mumble { +namespace Translations { + + QStringList getDefaultTranslationDirectories() { + QStringList translationDirs; + + const QString translationDirName = "MumbleTranslations"; + + // AppData directories + for (const QString ¤tConfigPath : QStandardPaths::standardLocations(QStandardPaths::AppDataLocation)) { + translationDirs.append(QDir::cleanPath(currentConfigPath)); + } + // Directories in the config locations + for (const QString ¤tConfigPath : QStandardPaths::standardLocations(QStandardPaths::ConfigLocation)) { + translationDirs.append(QDir::cleanPath(currentConfigPath + QDir::separator() + translationDirName)); + } + // A directory in the home directory + for (const QString ¤tHomePath : QStandardPaths::standardLocations(QStandardPaths::HomeLocation)) { + translationDirs.append(QDir::cleanPath(currentHomePath + QDir::separator() + translationDirName)); + } + + return translationDirs; + } + + QStringList getTranslationDirectories(const QApplication &app, const QStringList &extraDirectories) { + QStringList directories; + + // The extra directories have highest priority + directories += extraDirectories; + + // Next up is the application's root path + directories.append(app.applicationDirPath()); + + // And finally the default locations + directories += getDefaultTranslationDirectories(); + + return directories; + } + + void installTranslators(const QLocale &locale, QApplication &app, const QStringList &extraDirectories) { + // First install a translator that uses the bundled translations + QTranslator bundledTranslator; + if (bundledTranslator.load(locale, ":mumble_")) { + app.installTranslator(&bundledTranslator); + } else { + qWarning("Unable to find bundled translations for locale \"%s\"", qUtf8Printable(locale.name())); + } + + // Now try to add another translator that can overwrite the bundled translations based + // on translations found in one of the translation directories. + // The first matching translation file that is found, will be used (first come, first served) + QTranslator overwriteTranslator; + + const QString prefix = ""; + + for (const QString ¤tDir : getTranslationDirectories(app, extraDirectories)) { + if (overwriteTranslator.load(locale, "mumble_", prefix, currentDir)) { + app.installTranslator(&overwriteTranslator); + + qWarning("Using extra translation file for locale \"%s\" from directory \"%s\"", + qUtf8Printable(locale.name()), qUtf8Printable(currentDir)); + break; + } + } + + // With modularization of Qt 5 some - but not all - of the qt_<locale>.ts files have become + // so-called meta catalogues which no longer contain actual translations but refer to other + // more specific ts files like qtbase_<locale>.ts . To successfully load a meta catalogue all + // of its referenced translations must be available. As we do not want to bundle them all + // we now try to load the old qt_<locale>.ts file first and then fall back to loading + // qtbase_<locale>.ts if that failed. + // + // See http://doc.qt.io/qt-5/linguist-programmers.html#deploying-translations for more information + QTranslator qttranslator; + // First we try and see if there is a translation packaged with Mumble that shall overwrite any potentially + // existing Qt translations. If not, we try to load the qt-translations installed on the host-machine and if + // that fails as well, we try to load translations bundled in Mumble. Note: Resource starting with :/ are + // bundled resources specified in a .qrc file + if (qttranslator.load(locale, ":/mumble_overwrite_qt_")) { + app.installTranslator(&qttranslator); + } else if (qttranslator.load(locale, ":/mumble_overwrite_qtbase_")) { + app.installTranslator(&qttranslator); + } else if (qttranslator.load(locale, "qt_", QLibraryInfo::location(QLibraryInfo::TranslationsPath))) { + app.installTranslator(&qttranslator); + } else if (qttranslator.load(locale, "qtbase_", QLibraryInfo::location(QLibraryInfo::TranslationsPath))) { + app.installTranslator(&qttranslator); + } else if (qttranslator.load(locale, ":/qt_")) { + app.installTranslator(&qttranslator); + } else if (qttranslator.load(locale, ":/qtbase_")) { + app.installTranslator(&qttranslator); + } + } +}; // namespace Translations +}; // namespace Mumble |