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Sorting out how to test translation files

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Windows makes this more complex than necessary.

On  all  systems  the  packaged  translation  file  in  the  resources
:/Translations  directory wsjtx_<lang>.qm  will  be  loaded if  <lang>
matches the  current system locale. Otherwise  the native translatable
strings will be used (en_US is assumed for the native language).

On  all systems  a wsjtx_<lang>.qm  compiled translation  file in  the
current working directory will be loaded if <lang> matches the current
system locale  language and  country (wsjtx_en_GB.qm  for a  locale of
en-GB).

On non-Windows systems  the locale used above can be  set for just the
wsjtx instance being tested by  setting the LANG environment variable,
e.g.

LANG=ca-ES wsjtx

On  Windows  systems  the  current  locale  can  only  be  changed  by
installing  the  relevant  Windows  Language Pack,  selecting  the  UI
language     either      as     the      default     or      as     an
override (Set-WinUILanguageOverride  -Language ca-ES) and  the signing
out and back in.

The two translations file sources above  cam be overridden using a new
command line option:

[-l | -language] <language-code>[-<country-code>]

e.g. -language  ca-ES which will  load the first  readable translation
file as  found in the following  order: :/Translations/wsjtx_ca_ES.qm,
:/Translation/wsjtx_ca.qm,  :/Translations/wsjtx.qm. This  search will
be  preceded  by  the  normal translation  file  load  from  resources
described above. Following  that and the normal load  from the current
working directory described above, the first readable translation file
as    found    in    the   following    order:    $cwd/wsjtx_ca_ES.qm,
$cwd/wsjtx_ca.qm, $cwd/wsjtx.qm.

This allows Windows  testers to change the WSJT-X  UI language without
having to  change the system  UI language and installing  the relevant
language  pack.  Note  that using  this  method will  only change  the
translated  strings,  number  and  date formatting  will  not  change.
Because of this it should only be used for basic testing.
This commit is contained in:
Bill Somerville 2020-05-18 23:00:02 +01:00
parent a9bb592487
commit 9501cdf271
No known key found for this signature in database
GPG Key ID: D864B06D1E81618F
1 changed files with 77 additions and 23 deletions
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98
main.cpp
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@ -107,8 +107,20 @@ int main(int argc, char *argv[])
ExceptionCatchingApplication a(argc, argv); ExceptionCatchingApplication a(argc, argv);
try try
{ {
QLocale locale; // get the current system locale
qDebug () << "locale: language:" << locale.language () << "script:" << locale.script ()
<< "country:" << locale.country () << "ui-languages:" << locale.uiLanguages ();
setlocale (LC_NUMERIC, "C"); // ensure number forms are in
// consistent format, do this after
// instantiating QApplication so
// that GUI has correct l18n
// Override programs executable basename as application name.
a.setApplicationName ("WSJT-X");
a.setApplicationVersion (version ());
// //
// Enable i18n // Enable base i18n
// //
QTranslator translator_from_resources; QTranslator translator_from_resources;
// Default translations for releases use translations stored in // Default translations for releases use translations stored in
@ -121,28 +133,11 @@ int main(int argc, char *argv[])
// translations but should only be set when adding new // translations but should only be set when adding new
// languages. The resulting .ts files should be checked info // languages. The resulting .ts files should be checked info
// source control for translators to access and update. // source control for translators to access and update.
translator_from_resources.load (QLocale::system (), "wsjtx", "_", ":/Translations"); if (translator_from_resources.load (locale, "wsjtx", "_", ":/Translations"))
{
qDebug () << "Loaded translations for current locale from resources";
a.installTranslator (&translator_from_resources); a.installTranslator (&translator_from_resources);
}
QTranslator translator_from_files;
// Load any matching translation from the current directory
// using the locale name. 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. Either the system locale setting or the environment
// variable LANG can be used to select the target language.
translator_from_files.load (QString {"wsjtx_"} + QLocale::system ().name ());
a.installTranslator (&translator_from_files);
setlocale (LC_NUMERIC, "C"); // ensure number forms are in
// consistent format, do this after
// instantiating QApplication so
// that GUI has correct l18n
// Override programs executable basename as application name.
a.setApplicationName ("WSJT-X");
a.setApplicationVersion (version ());
QCommandLineParser parser; QCommandLineParser parser;
parser.setApplicationDescription ("\n" PROJECT_SUMMARY_DESCRIPTION); parser.setApplicationDescription ("\n" PROJECT_SUMMARY_DESCRIPTION);
@ -161,6 +156,12 @@ int main(int argc, char *argv[])
, a.translate ("main", "configuration")); , a.translate ("main", "configuration"));
parser.addOption (cfg_option); 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"));
parser.addOption (lang_option);
QCommandLineOption test_option (QStringList {} << "test-mode" QCommandLineOption test_option (QStringList {} << "test-mode"
, a.translate ("main", "Writable files in test location. Use with caution, for testing only.")); , a.translate ("main", "Writable files in test location. Use with caution, for testing only."));
parser.addOption (test_option); parser.addOption (test_option);
@ -184,6 +185,59 @@ int main(int argc, char *argv[])
} }
} }
//
// Complete i18n
//
QTranslator translation_override_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 (parser.isSet (lang_option))
{
auto language = parser.value (lang_option).replace ('-', '_');
if (translation_override_from_resources.load ("wsjtx_" + language , ":/Translations"))
{
qDebug () << QString {"loaded translation file :/Translations/wsjtx_%1.qm"}.arg (language);
a.installTranslator (&translation_override_from_resources);
}
}
QTranslator translator_from_files;
// 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.
if (translator_from_files.load (locale, "wsjtx", "_"))
{
qDebug () << "loaded translations for current locale from a file";
a.installTranslator (&translator_from_files);
}
QTranslator translation_override_from_files;
// 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 (parser.isSet (lang_option))
{
auto language = parser.value (lang_option).replace ('-', '_');
if (translation_override_from_files.load ("wsjtx_" + language))
{
qDebug () << QString {"loaded translation file $cwd/wsjtx_%1.qm"}.arg (language);
a.installTranslator (&translation_override_from_files);
}
}
QStandardPaths::setTestModeEnabled (parser.isSet (test_option)); QStandardPaths::setTestModeEnabled (parser.isSet (test_option));
// support for multiple instances running from a single installation // support for multiple instances running from a single installation