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Tidy up l10n and allow for override to 'en' with no translations

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Passing `--language en', '-l en-US', or `-l en_US` now takes a special
action to  not load  any translations using  the current  locale. This
allows the current system UI language not to influence an translations
loaded via the command line override when the native en-US is wanted.
This commit is contained in:
Bill Somerville 2020-06-01 11:07:41 +01:00
parent 013099c363
commit 317d9a7493
No known key found for this signature in database
GPG Key ID: D864B06D1E81618F
4 changed files with 256 additions and 171 deletions
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1
CMakeLists.txt
View File

@ -229,6 +229,7 @@ set (wsjt_qt_CXXSRCS
MetaDataRegistry.cpp
Network/NetworkServerLookup.cpp
revision_utils.cpp
L10nLoader.cpp
WFPalette.cpp
Radio.cpp
RadioMetaType.cpp

218
L10nLoader.cpp Normal file
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@ -0,0 +1,218 @@
#include "L10nLoader.hpp"
#include <vector>
#include <memory>
#include <QApplication>
#include <QLocale>
#include <QTranslator>
#include <QRegularExpression>
#include <QDebug>
#include "pimpl_impl.hpp"
class L10nLoader::impl final
{
public:
explicit impl(QApplication * app)
: app_ {app}
{
}
bool load_translator (QString const& filename
, QString const& directory = QString {}
, QString const& search_delimiters = QString {}
, QString const& suffix = QString {})
{
std::unique_ptr<QTranslator> translator {new QTranslator};
if (translator->load (filename, directory, search_delimiters, suffix))
{
install (std::move (translator));
return true;
}
return false;
}
bool load_translator (QLocale const& locale, QString const& filename
, QString const& prefix = QString {}
, QString const& directory = QString {}
, QString const& suffix = QString {})
{
std::unique_ptr<QTranslator> translator {new QTranslator};
if (translator->load (locale, filename, prefix, directory, suffix))
{
install (std::move (translator));
return true;
}
return false;
}
void install (std::unique_ptr<QTranslator> translator)
{
app_->installTranslator (translator.get ());
translators_.push_back (std::move (translator));
}
QApplication * app_;
std::vector<std::unique_ptr<QTranslator>> translators_;
};
L10nLoader::L10nLoader (QApplication * app, QLocale const& locale, QString const& language_override)
: m_ {app}
{
qDebug () << QString {"locale: language: %1 script: %2 country: %3 ui-languages: %4"}
.arg (QLocale::languageToString (locale.language ()))
.arg (QLocale::scriptToString (locale.script ()))
.arg (QLocale::countryToString (locale.country ()))
.arg (locale.uiLanguages ().join (", "));
// we don't load translators if the language override is 'en',
// 'en_US', or 'en-US'. In these cases we assume the user is trying
// to disable translations loaded because of their locale. We cannot
// load any locale based translations in this case.
auto skip_locale = language_override.contains (QRegularExpression {"^(?:en|en[-_]US)$"});
//
// Enable base i18n
//
QString translations_dir {":/Translations"};
if (!skip_locale)
{
qDebug () << "Looking for locale based Qt translations in resources filesystem";
if (m_->load_translator (locale, "qt", "_", translations_dir))
{
qDebug () << "Loaded Qt translations for current locale from resources";
}
// Default translations for releases use translations stored in
// the resources file system under the Translations
// directory. These are built by the CMake build system from .ts
// files in the translations source directory. New languages are
// added by enabling the UPDATE_TRANSLATIONS CMake option and
// building with the new language added to the LANGUAGES CMake
// list variable. UPDATE_TRANSLATIONS will preserve existing
// translations but should only be set when adding new
// languages. The resulting .ts files should be checked info
// source control for translators to access and update.
// try and load the base translation
qDebug () << "Looking for WSJT-X translations based on UI languages in the resources filesystem";
for (QString locale_name : locale.uiLanguages ())
{
auto language = locale_name.left (2);
if (locale.uiLanguages ().front ().left (2) == language)
{
qDebug () << QString {"Trying %1"}.arg (language);
if (m_->load_translator ("wsjtx_" + language, translations_dir))
{
qDebug () << QString {"Loaded WSJT-X base translation file from %1 based on language %2"}
.arg (translations_dir)
.arg (language);
break;
}
}
}
// now try and load the most specific translations (may be a
// duplicate but we shouldn't care)
qDebug () << "Looking for WSJT-X translations based on locale in the resources filesystem";
if (m_->load_translator (locale, "wsjtx", "_", translations_dir))
{
qDebug () << "Loaded WSJT-X translations for current locale from resources";
}
}
// Load any matching translation from the current directory
// using the command line option language override. This allows
// translators to easily test their translations by releasing
// (lrelease) a .qm file into the current directory with a
// suitable name (e.g. wsjtx_en_GB.qm), then running wsjtx to
// view the results.
if (language_override.size ())
{
auto language = language_override;
language.replace ('-', '_');
// try and load the base translation
auto base_language = language.left (2);
qDebug () << "Looking for WSJT-X translations based on command line region override in the resources filesystem";
if (m_->load_translator ("wsjtx_" + base_language, translations_dir))
{
qDebug () << QString {"Loaded base translation file from %1 based on language %2"}
.arg (translations_dir)
.arg (base_language);
}
// now load the requested translations (may be a duplicate
// but we shouldn't care)
qDebug () << "Looking for WSJT-X translations based on command line override country in the resources filesystem";
if (m_->load_translator ("wsjtx_" + language, translations_dir))
{
qDebug () << QString {"Loaded translation file from %1 based on language %2"}
.arg (translations_dir)
.arg (language);
}
}
// Load any matching translation from the current directory using
// the current locale. This allows translators to easily test their
// translations by releasing (lrelease) a .qm file into the current
// directory with a suitable name (e.g. wsjtx_en_GB.qm), then
// running wsjtx to view the results. The system locale setting will
// be used to select the translation file which can be overridden by
// the LANG environment variable on non-Windows system.
// try and load the base translation
qDebug () << "Looking for WSJT-X translations based on command line override country in the current directory";
for (QString locale_name : locale.uiLanguages ())
{
auto language = locale_name.left (2);
if (locale.uiLanguages ().front ().left (2) == language)
{
qDebug () << QString {"Trying %1"}.arg (language);
if (m_->load_translator ("wsjtx_" + language))
{
qDebug () << QString {"Loaded base translation file from $cwd based on language %1"}.arg (language);
break;
}
}
}
if (!skip_locale)
{
// now try and load the most specific translations (may be a
// duplicate but we shouldn't care)
qDebug () << "Looking for WSJT-X translations based on locale in the resources filesystem";
if (m_->load_translator (locale, "wsjtx", "_"))
{
qDebug () << "loaded translations for current locale from a file";
}
}
// Load any matching translation from the current directory using
// the command line option language override. This allows
// translators to easily test their translations on Windows by
// releasing (lrelease) a .qm file into the current directory with a
// suitable name (e.g. wsjtx_en_GB.qm), then running wsjtx to view
// the results.
if (language_override.size ())
{
auto language = language_override;
language.replace ('-', '_');
// try and load the base translation
auto base_language = language.left (2);
qDebug () << "Looking for WSJT-X translations based on command line override country in the current directory";
if (m_->load_translator ("wsjtx_" + base_language))
{
qDebug () << QString {"Loaded base translation file from $cwd based on language %1"}.arg (base_language);
}
// now load the requested translations (may be a duplicate
// but we shouldn't care)
qDebug () << "Looking for WSJT-X translations based on command line region in the current directory";
if (m_->load_translator ("wsjtx_" + language))
{
qDebug () << QString {"loaded translation file from $cwd based on language %1"}.arg (language);
}
}
}
L10nLoader::~L10nLoader ()
{
}

21
L10nLoader.hpp Normal file
View File

@ -0,0 +1,21 @@
#ifndef WSJTX_L10N_LOADER_HPP__
#define WSJTX_L10N_LOADER_HPP__
#include <QString>
#include "pimpl_h.hpp"
class QApplication;
class QLocale;
class L10nLoader final
{
public:
explicit L10nLoader (QApplication *, QLocale const&, QString const& language_override = QString {});
~L10nLoader ();
private:
class impl;
pimpl<impl> m_;
};
#endif

187
main.cpp
View File

@ -15,7 +15,6 @@
#include <QRegularExpression>
#include <QObject>
#include <QSettings>
#include <QLibraryInfo>
#include <QSysInfo>
#include <QDir>
#include <QDirIterator>
@ -31,6 +30,7 @@
#include "revision_utils.hpp"
#include "MetaDataRegistry.hpp"
#include "L10nLoader.hpp"
#include "SettingsGroup.hpp"
#include "TraceFile.hpp"
#include "MultiSettings.hpp"
@ -109,14 +109,6 @@ int main(int argc, char *argv[])
ExceptionCatchingApplication a(argc, argv);
try
{
std::unique_ptr<QStringList> early_messages {new QStringList};
QLocale locale; // get the current system locale
*early_messages << QString {"locale: language: %1 script: %2 country: %3 ui-languages: %4"}
.arg (QLocale::languageToString (locale.language ()))
.arg (QLocale::scriptToString (locale.script ()))
.arg (QLocale::countryToString (locale.country ()))
.arg (locale.uiLanguages ().join (", "));
// qDebug () << "+++++++++++++++++++++++++++ Resources ++++++++++++++++++++++++++++";
// {
// QDirIterator resources_iter {":/", QDirIterator::Subdirectories};
@ -126,6 +118,8 @@ int main(int argc, char *argv[])
// }
// }
// qDebug () << "--------------------------- Resources ----------------------------";
QLocale locale; // get the current system locale
setlocale (LC_NUMERIC, "C"); // ensure number forms are in
// consistent format, do this after
// instantiating QApplication so
@ -135,55 +129,6 @@ int main(int argc, char *argv[])
a.setApplicationName ("WSJT-X");
a.setApplicationVersion (version ());
//
// Enable base i18n
//
QString translations_dir {":/Translations"};
QTranslator qt_translator;
if (qt_translator.load (locale, "qt", "_", translations_dir))
{
*early_messages << "Loaded Qt translations for current locale from resources";
a.installTranslator (&qt_translator);
}
// Default translations for releases use translations stored in
// the resources file system under the Translations
// directory. These are built by the CMake build system from .ts
// files in the translations source directory. New languages are
// added by enabling the UPDATE_TRANSLATIONS CMake option and
// building with the new language added to the LANGUAGES CMake
// list variable. UPDATE_TRANSLATIONS will preserve existing
// translations but should only be set when adding new
// languages. The resulting .ts files should be checked info
// source control for translators to access and update.
// try and load the base translation
QTranslator base_translator_from_resources;
for (QString locale_name : locale.uiLanguages ())
{
auto language = locale_name.left (2);
if (locale.uiLanguages ().front ().left (2) == language)
{
*early_messages << QString {"Trying %1"}.arg (language);
if (base_translator_from_resources.load ("wsjtx_" + language, translations_dir))
{
*early_messages << QString {"Loaded base translation file from %1 based on language %2"}
.arg (translations_dir)
.arg (language);
a.installTranslator (&base_translator_from_resources);
break;
}
}
}
// now try and load the most specific translations (may be a
// duplicate but we shouldn't care)
QTranslator translator_from_resources;
if (translator_from_resources.load (locale, "wsjtx", "_", translations_dir))
{
*early_messages << "Loaded translations for current locale from resources";
a.installTranslator (&translator_from_resources);
}
QCommandLineParser parser;
parser.setApplicationDescription ("\n" PROJECT_SUMMARY_DESCRIPTION);
auto help_option = parser.addHelpOption ();
@ -191,140 +136,47 @@ int main(int argc, char *argv[])
// support for multiple instances running from a single installation
QCommandLineOption rig_option (QStringList {} << "r" << "rig-name"
, a.translate ("main", "Where <rig-name> is for multi-instance support.")
, a.translate ("main", "rig-name"));
, "Where <rig-name> is for multi-instance support."
, "rig-name");
parser.addOption (rig_option);
// support for start up configuration
QCommandLineOption cfg_option (QStringList {} << "c" << "config"
, a.translate ("main", "Where <configuration> is an existing one.")
, a.translate ("main", "configuration"));
, "Where <configuration> is an existing one."
, "configuration");
parser.addOption (cfg_option);
// support for UI language override (useful on Windows)
QCommandLineOption lang_option (QStringList {} << "l" << "language"
, a.translate ("main", "Where <language> is <lang-code>[-<country-code>].")
, a.translate ("main", "language"));
, "Where <language> is <lang-code>[-<country-code>]."
, "language");
parser.addOption (lang_option);
QCommandLineOption test_option (QStringList {} << "test-mode"
, a.translate ("main", "Writable files in test location. Use with caution, for testing only."));
, "Writable files in test location. Use with caution, for testing only.");
parser.addOption (test_option);
if (!parser.parse (a.arguments ()))
{
MessageBox::critical_message (nullptr, a.translate ("main", "Command line error"), parser.errorText ());
MessageBox::critical_message (nullptr, "Command line error", parser.errorText ());
return -1;
}
else
{
if (parser.isSet (help_option))
{
MessageBox::information_message (nullptr, a.translate ("main", "Command line help"), parser.helpText ());
MessageBox::information_message (nullptr, "Command line help", parser.helpText ());
return 0;
}
else if (parser.isSet (version_option))
{
MessageBox::information_message (nullptr, a.translate ("main", "Application version"), a.applicationVersion ());
MessageBox::information_message (nullptr, "Application version", a.applicationVersion ());
return 0;
}
}
//
// Complete i18n
//
// Load any matching translation from the current directory
// using the command line option language override. This allows
// translators to easily test their translations by releasing
// (lrelease) a .qm file into the current directory with a
// suitable name (e.g. wsjtx_en_GB.qm), then running wsjtx to
// view the results.
QTranslator base_translation_override_from_resources;
QTranslator translation_override_from_resources;
if (parser.isSet (lang_option))
{
auto language = parser.value (lang_option).replace ('-', '_');
// try and load the base translation
auto base_language = language.left (2);
if (base_translation_override_from_resources.load ("wsjtx_" + base_language, translations_dir))
{
*early_messages << QString {"Loaded base translation file from %1 based on language %2"}
.arg (translations_dir)
.arg (base_language);
a.installTranslator (&base_translation_override_from_resources);
}
// now load the requested translations (may be a duplicate
// but we shouldn't care)
if (translation_override_from_resources.load ("wsjtx_" + language, translations_dir))
{
*early_messages << QString {"Loaded translation file from %1 based on language %2"}
.arg (translations_dir)
.arg (language);
a.installTranslator (&translation_override_from_resources);
}
}
// Load any matching translation from the current directory
// using the current locale. This allows translators to easily
// test their translations by releasing (lrelease) a .qm file
// into the current directory with a suitable name (e.g.
// wsjtx_en_GB.qm), then running wsjtx to view the results. The
// system locale setting will be used to select the translation
// file which can be overridden by the LANG environment variable
// on non-Windows system.
// try and load the base translation
QTranslator base_translator_from_cwd;
for (QString locale_name : locale.uiLanguages ())
{
auto language = locale_name.left (2);
if (locale.uiLanguages ().front ().left (2) == language)
{
*early_messages << QString {"Trying %1"}.arg (language);
if (base_translator_from_cwd.load ("wsjtx_" + language))
{
*early_messages << QString {"Loaded base translation file from $cwd based on language %1"}.arg (language);
a.installTranslator (&base_translator_from_cwd);
break;
}
}
}
// now try and load the most specific translations (may be a
// duplicate but we shouldn't care)
QTranslator translator_from_cwd;
if (translator_from_cwd.load (locale, "wsjtx", "_"))
{
*early_messages << "loaded translations for current locale from a file";
a.installTranslator (&translator_from_cwd);
}
// Load any matching translation from the current directory
// using the command line option language override. This allows
// translators to easily test their translations on Windows by
// releasing (lrelease) a .qm file into the current directory
// with a suitable name (e.g. wsjtx_en_GB.qm), then running
// wsjtx to view the results.
QTranslator base_translation_override_from_cwd;
QTranslator translation_override_from_cwd;
if (parser.isSet (lang_option))
{
auto language = parser.value (lang_option).replace ('-', '_');
// try and load the base translation
auto base_language = language.left (2);
if (base_translation_override_from_cwd.load ("wsjtx_" + base_language))
{
*early_messages << QString {"Loaded base translation file from $cwd based on language %1"}.arg (base_language);
a.installTranslator (&base_translation_override_from_cwd);
}
// now load the requested translations (may be a duplicate
// but we shouldn't care)
if (translation_override_from_cwd.load ("wsjtx_" + language))
{
*early_messages << QString {"loaded translation file from $cwd based on language %1"}.arg (language);
a.installTranslator (&translation_override_from_cwd);
}
}
// load UI translations
L10nLoader l10n {&a, locale, parser.value (lang_option)};
QStandardPaths::setTestModeEnabled (parser.isSet (test_option));
@ -337,7 +189,7 @@ int main(int argc, char *argv[])
{
if (temp_name.contains (QRegularExpression {R"([\\/,])"}))
{
std::cerr << QObject::tr ("Invalid rig name - \\ & / not allowed").toLocal8Bit ().data () << std::endl;
std::cerr << "Invalid rig name - \\ & / not allowed" << std::endl;
parser.showHelp (-1);
}
@ -395,13 +247,6 @@ int main(int argc, char *argv[])
qDebug () << program_title (revision ()) + " - Program startup";
#endif
// trace early messages now we have a trace file
for (auto const& message : *early_messages)
{
qDebug () << message;
}
early_messages.reset (); // free memory
// Create a unique writeable temporary directory in a suitable location
bool temp_ok {false};
QString unique_directory {QApplication::applicationName ()};