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Load catalogs for all preferred languages, if they exist

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This way the first and only fallback language isn't necessarily the
msgid language (which is English most often). This is how GNU gettext
works -- it uses multiple fallback languages when multiple preferred
languages are set.

As a side effect, fixes #18227 in one possible way.
This commit is contained in:
Lauri Nurmi
2018-10-02 19:49:50 +03:00
committed by Vadim Zeitlin
parent 5d08e404c7
commit 2d784da2ee
2 changed files with 34 additions and 12 deletions
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31
src/common/translation.cpp
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@@ -1555,9 +1555,9 @@ bool wxTranslations::AddCatalog(const wxString& domain,
wxLanguage msgIdLanguage)
{
const wxString msgIdLang = wxLocale::GetLanguageCanonicalName(msgIdLanguage);
const wxString domain_lang = GetBestTranslation(domain, msgIdLang);
const wxArrayString domain_langs = GetAllGoodTranslations(domain, msgIdLanguage);
if ( domain_lang.empty() )
if ( domain_langs.empty() )
{
wxLogTrace(TRACE_I18N,
wxS("no suitable translation for domain '%s' found"),
@@ -1565,11 +1565,30 @@ bool wxTranslations::AddCatalog(const wxString& domain,
return false;
}
wxLogTrace(TRACE_I18N,
wxS("adding '%s' translation for domain '%s' (msgid language '%s')"),
domain_lang, domain, msgIdLang);
bool success = false;
for ( wxArrayString::const_iterator lang = domain_langs.begin();
lang != domain_langs.end();
++lang )
{
wxLogTrace(TRACE_I18N,
wxS("adding '%s' translation for domain '%s' (msgid language '%s')"),
*lang, domain, msgIdLang);
return LoadCatalog(domain, domain_lang, msgIdLang);
// No use loading languages that are less preferred than the
// msgid language, as by definition it contains all the strings
// in the msgid language.
if ( msgIdLang == *lang )
break;
// We determine success by the success of loading/failing to load
// the most preferred (i.e. the first one) language's catalog:
if ( lang == domain_langs.begin() )
success = LoadCatalog(domain, *lang, msgIdLang);
else
LoadCatalog(domain, *lang, msgIdLang);
}
return success;
}