D8 modul fordítások (.po)

/**
 * Add a user interface translation to the translation storage.
 *
 * Found here: https://drupal.stackexchange.com/a/233121
 *
 * @param $source_string - English string.
 * @param $langcode - Language to translate to.
 * @param $translated_string - Translated string.
 */
function MODULE_translation_add_translation($source_string, $langcode, $translated_string) {
  // Find existing source string.
  $storage = \Drupal::service('locale.storage');
  $string = $storage->findString(['source' => $source_string]);
  if (is_null($string)) {
    $string = new SourceString();
    $string->setString($source_string);
    $string->setStorage($storage);
    $string->save();
  }
  // Create translation. If one already exists, it will be replaced.
  $translation = $storage->createTranslation([
    'lid' => $string->lid,
    'language' => $langcode,
    'translation' => $translated_string,
  ]);
  $translation->save();
}
 
/**
 * Import all translations for this module.
 */
function MODULE_translation_import_translations($path, $langcode) {
 
  // Parse the file.
  $translations = Yaml::parse(file_get_contents($path));
 
  // Save each translation.
  foreach ($translations as $english => $translation) {
    MODULE_translation_add_translation($english, $langcode, $translation);
  }
}