BookStack/app/Util/LanguageManager.php

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<?php
namespace BookStack\Util;
use Illuminate\Http\Request;
class LanguageManager
{
/**
* Array of right-to-left language options.
*/
protected array $rtlLanguages = ['ar', 'fa', 'he'];
/**
* Map of BookStack language names to best-estimate ISO and windows locale names.
* Locales can often be found by running `locale -a` on a linux system.
* Windows locales can be found at:
* https://docs.microsoft.com/en-us/cpp/c-runtime-library/language-strings?view=msvc-170.
*
* @var array<string, array{iso: string, windows: string}>
*/
protected array $localeMap = [
'ar' => ['iso' => 'ar', 'windows' => 'Arabic'],
'bg' => ['iso' => 'bg_BG', 'windows' => 'Bulgarian'],
'bs' => ['iso' => 'bs_BA', 'windows' => 'Bosnian (Latin)'],
'ca' => ['iso' => 'ca', 'windows' => 'Catalan'],
'da' => ['iso' => 'da_DK', 'windows' => 'Danish'],
'de' => ['iso' => 'de_DE', 'windows' => 'German'],
'de_informal' => ['iso' => 'de_DE', 'windows' => 'German'],
'en' => ['iso' => 'en_GB', 'windows' => 'English'],
'es' => ['iso' => 'es_ES', 'windows' => 'Spanish'],
'es_AR' => ['iso' => 'es_AR', 'windows' => 'Spanish'],
'et' => ['iso' => 'et_EE', 'windows' => 'Estonian'],
'eu' => ['iso' => 'eu_ES', 'windows' => 'Basque'],
'fa' => ['iso' => 'fa_IR', 'windows' => 'Persian'],
'fr' => ['iso' => 'fr_FR', 'windows' => 'French'],
'he' => ['iso' => 'he_IL', 'windows' => 'Hebrew'],
'hr' => ['iso' => 'hr_HR', 'windows' => 'Croatian'],
'hu' => ['iso' => 'hu_HU', 'windows' => 'Hungarian'],
'id' => ['iso' => 'id_ID', 'windows' => 'Indonesian'],
'it' => ['iso' => 'it_IT', 'windows' => 'Italian'],
'ja' => ['iso' => 'ja', 'windows' => 'Japanese'],
'ko' => ['iso' => 'ko_KR', 'windows' => 'Korean'],
'lt' => ['iso' => 'lt_LT', 'windows' => 'Lithuanian'],
'lv' => ['iso' => 'lv_LV', 'windows' => 'Latvian'],
'nl' => ['iso' => 'nl_NL', 'windows' => 'Dutch'],
'nb' => ['iso' => 'nb_NO', 'windows' => 'Norwegian (Bokmal)'],
'pl' => ['iso' => 'pl_PL', 'windows' => 'Polish'],
'pt' => ['iso' => 'pt_PT', 'windows' => 'Portuguese'],
'pt_BR' => ['iso' => 'pt_BR', 'windows' => 'Portuguese'],
'ru' => ['iso' => 'ru', 'windows' => 'Russian'],
'sk' => ['iso' => 'sk_SK', 'windows' => 'Slovak'],
'sl' => ['iso' => 'sl_SI', 'windows' => 'Slovenian'],
'sv' => ['iso' => 'sv_SE', 'windows' => 'Swedish'],
'uk' => ['iso' => 'uk_UA', 'windows' => 'Ukrainian'],
'vi' => ['iso' => 'vi_VN', 'windows' => 'Vietnamese'],
'zh_CN' => ['iso' => 'zh_CN', 'windows' => 'Chinese (Simplified)'],
'zh_TW' => ['iso' => 'zh_TW', 'windows' => 'Chinese (Traditional)'],
'tr' => ['iso' => 'tr_TR', 'windows' => 'Turkish'],
];
/**
* Get the language specifically for the currently logged-in user if available.
*/
public function getUserLanguage(Request $request, string $default): string
{
try {
$user = user();
} catch (\Exception $exception) {
return $default;
}
if ($user->isDefault() && config('app.auto_detect_locale')) {
return $this->autoDetectLocale($request, $default);
}
return setting()->getUser($user, 'language', $default);
}
/**
* Check if the given BookStack language value is a right-to-left language.
*/
public function isRTL(string $language): bool
{
return in_array($language, $this->rtlLanguages);
}
/**
* Autodetect the visitors locale by matching locales in their headers
* against the locales supported by BookStack.
*/
protected function autoDetectLocale(Request $request, string $default): string
{
$availableLocales = config('app.locales');
foreach ($request->getLanguages() as $lang) {
if (in_array($lang, $availableLocales)) {
return $lang;
}
}
return $default;
}
/**
* Get the ISO version of a BookStack language name.
*/
public function getIsoName(string $language): string
{
return $this->localeMap[$language]['iso'] ?? $language;
}
/**
* Set the system date locale for localized date formatting.
* Will try both the standard locale name and the UTF8 variant.
*/
public function setPhpDateTimeLocale(string $language): void
{
$isoLang = $this->localeMap[$language]['iso'] ?? false;
$locales = array_filter([
$isoLang ? $isoLang . '.utf8' : false,
$isoLang ?: false,
$isoLang ? str_replace('_', '-', $isoLang) : false,
$this->localeMap[$language]['windows'] ?? false,
$language,
]);
if (!empty($locales)) {
setlocale(LC_TIME, ...$locales);
}
}
}