int
translation_c::look_up_translation(const std::string &locale) {
try {
auto hits = std::vector< std::pair<int, int> >{};
auto full = locale_string_c(locale).str(locale_string_c::full);
auto half = locale_string_c(locale).str(locale_string_c::half);
for (auto beg = ms_available_translations.begin(), itr = ms_available_translations.begin(), end = ms_available_translations.end(); itr != end; ++itr) {
auto score = itr->matches(full) ? 2
: itr->matches(half) ? 1
: 0;
if (score)
hits.emplace_back(std::make_pair(score, static_cast<int>(std::distance(beg, itr))));
}
if (!hits.empty()) {
brng::sort(hits);
return hits.back().second;
}
} catch (mtx::locale_string_format_x &) {
}
return -1;
}
int
translation_c::look_up_translation(const std::string &locale) {
try {
std::string locale_country_lang = locale_string_c(locale).str(locale_string_c::half);
std::vector<translation_c>::iterator i = ms_available_translations.begin();
int idx = 0;
while (i != ms_available_translations.end()) {
if ( ba::iequals(locale_country_lang, i->get_locale())
#if defined(SYS_WINDOWS)
|| ba::iequals(locale_country_lang, i->m_windows_locale_sysname)
#endif
)
return idx;
++i;
++idx;
}
} catch (mtx::locale_string_format_x &) {
}
return -1;
}
void
init_locales(std::string locale) {
auto debug = debugging_c::requested("locale");
translation_c::initialize_available_translations();
mxdebug_if(debug, boost::format("[init_locales start: locale %1%]\n") % locale);
std::string locale_dir;
std::string default_locale = translation_c::get_default_ui_locale();
if (-1 == translation_c::look_up_translation(locale)) {
mxdebug_if(debug, boost::format("[init_locales lookup failed; clearing locale]\n"));
locale = "";
}
if (locale.empty()) {
locale = default_locale;
mxdebug_if(debug, boost::format("[init_locales setting to default locale %1%]\n") % locale);
}
# if defined(SYS_WINDOWS)
mtx::sys::set_environment_variable("LANGUAGE", "");
if (!locale.empty()) {
// The Windows system headers define LC_MESSAGES but
// Windows itself doesn't know it and treats "set_locale(LC_MESSAGES, ...)"
// as an error. gettext uses the LANG and LC_MESSAGE environment variables instead.
// Windows knows two environments: the system environment that's
// modified by SetEnvironmentVariable() and the C library's cache
// of said environment which is modified via _putenv().
mtx::sys::set_environment_variable("LANG", locale);
mtx::sys::set_environment_variable("LC_MESSAGES", locale);
translation_c::set_active_translation(locale);
}
// Boost's path class uses wide chars on Windows for path
// names. Tell that all narrow strings are encoded in UTF-8.
std::locale utf8_locale(std::locale(), new mtx::utf8_codecvt_facet);
std::locale::global(utf8_locale);
boost::filesystem::path::imbue(utf8_locale);
locale_dir = g_cc_local_utf8->native((mtx::sys::get_installation_path() / "locale").string());
# else // SYS_WINDOWS
std::string chosen_locale;
try {
locale_string_c loc_default(default_locale);
std::string loc_req_with_default_codeset(locale_string_c(locale).set_codeset_and_modifier(loc_default).str());
mxdebug_if(debug, boost::format("[init_locales loc_default is %1%; trying locale %3% followed by loc_req_with_default_codeset %2%]\n") % loc_default.str() % loc_req_with_default_codeset % locale);
if (setlocale(LC_MESSAGES, locale.c_str()))
chosen_locale = locale;
else if (setlocale(LC_MESSAGES, loc_req_with_default_codeset.c_str()))
chosen_locale = loc_req_with_default_codeset;
else {
std::string loc_req_with_utf8 = locale_string_c(locale).set_codeset_and_modifier(locale_string_c("dummy.UTF-8")).str();
mxdebug_if(debug, boost::format("[init_locales both failed; also trying %1%]\n") % loc_req_with_utf8);
if (setlocale(LC_MESSAGES, loc_req_with_utf8.c_str()))
chosen_locale = loc_req_with_utf8;
}
} catch (mtx::locale_string_format_x &error) {
mxdebug_if(debug, boost::format("[init_locales format error in %1%]\n") % error.error());
}
mxdebug_if(debug, boost::format("[init_locales chosen locale %1%]\n") % chosen_locale);
// Hard fallback to "C" locale if no suitable locale was
// selected. This can happen if the system has no locales for
// "en_US" or "en_US.UTF-8" compiled.
if (chosen_locale.empty() && setlocale(LC_MESSAGES, "C"))
chosen_locale = "C";
if (chosen_locale.empty())
mxerror(Y("The locale could not be set properly. Check the LANG, LC_ALL and LC_MESSAGES environment variables.\n"));
std::locale utf8_locale(std::locale(), new mtx::utf8_codecvt_facet);
std::locale::global(utf8_locale);
translation_c::set_active_translation(chosen_locale);
locale_dir = MTX_LOCALE_DIR;
# endif // SYS_WINDOWS
# if defined(SYS_APPLE)
int result = setenv("LC_MESSAGES", chosen_locale.c_str(), 1);
mxdebug_if(debug, boost::format("[init_locales setenv() return code: %1%]\n") % result);
# endif
bindtextdomain("mkvtoolnix", locale_dir.c_str());
textdomain("mkvtoolnix");
bind_textdomain_codeset("mkvtoolnix", "UTF-8");
}
