BookStack/app/Translation/Translator.php

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<?php namespace BookStack\Translation;
class Translator extends \Illuminate\Translation\Translator
{
/**
* Mapping of locales to their base locales
* @var array
*/
protected $baseLocaleMap = [
'de_informal' => 'de',
];
/**
* Get the translation for a given key.
*
* @param string $key
* @param array $replace
* @param string $locale
* @return string|array|null
*/
public function trans($key, array $replace = [], $locale = null)
{
$translation = $this->get($key, $replace, $locale);
if (is_array($translation)) {
$translation = $this->mergeBackupTranslations($translation, $key, $locale);
}
return $translation;
}
/**
* Merge the fallback translations, and base translations if existing,
* into the provided core key => value array of translations content.
* @param array $translationArray
* @param string $key
* @param null $locale
* @return array
*/
protected function mergeBackupTranslations(array $translationArray, string $key, $locale = null)
{
$fallback = $this->get($key, [], $this->fallback);
$baseLocale = $this->getBaseLocale($locale ?? $this->locale);
$baseTranslations = $baseLocale ? $this->get($key, [], $baseLocale) : [];
return array_replace_recursive($fallback, $baseTranslations, $translationArray);
}
/**
* Get the array of locales to be checked.
*
* @param string|null $locale
* @return array
*/
protected function localeArray($locale)
{
$primaryLocale = $locale ?: $this->locale;
return array_filter([$primaryLocale, $this->getBaseLocale($primaryLocale), $this->fallback]);
}
/**
* Get the locale to extend for the given locale.
*
* @param string $locale
* @return string|null
*/
protected function getBaseLocale($locale)
{
return $this->baseLocaleMap[$locale] ?? null;
}
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}