(Re-)Creates the JavaScript translation file for a language.

Parameters

$language: The language, the translation file should be (re)created for.

Related topics

File

drupal-6.x/includes/locale.inc, line 2147

Administration functions for locale.module.

Code

function _locale_rebuild_js($langcode = NULL) {
  if (!isset($langcode)) {
    global $language;
  }
  else {
    // Get information about the locale.
    $languages = language_list();
    $language = $languages[$langcode];
  }

  // Construct the array for JavaScript translations.
  // Only add strings with a translation to the translations array.
  $result = db_query("SELECT s.lid, s.source, t.translation FROM {locales_source} s INNER JOIN {locales_target} t ON s.lid = t.lid AND t.language = '%s' WHERE s.location LIKE '%%.js%%' AND s.textgroup = 'default'", $language->language);

  $translations = array();
  while ($data = db_fetch_object($result)) {
    $translations[$data->source] = $data->translation;
  }

  // Construct the JavaScript file, if there are translations.
  $data_hash = NULL;
  $data = $status = '';
  if (!empty($translations)) {

    $data = "Drupal.locale = { ";

    if (!empty($language->formula)) {
      $data .= "'pluralFormula': function(\$n) { return Number({$language->formula}); }, ";
    }

    $data .= "'strings': " . drupal_to_js($translations) . " };";
    $data_hash = md5($data);
  }

  // Construct the filepath where JS translation files are stored.
  // There is (on purpose) no front end to edit that variable.
  $dir = file_create_path(variable_get('locale_js_directory', 'languages'));

  // Delete old file, if we have no translations anymore, or a different file to be saved.
  $changed_hash = $language->javascript != $data_hash;
  if (!empty($language->javascript) && (!$data || $changed_hash)) {
    file_delete(file_create_path($dir . '/' . $language->language . '_' . $language->javascript . '.js'));
    $language->javascript = '';
    $status = 'deleted';
  }

  // Only create a new file if the content has changed or the original file got
  // lost.
  $dest = $dir . '/' . $language->language . '_' . $data_hash . '.js';
  if ($data && ($changed_hash || !file_exists($dest))) {
    // Ensure that the directory exists and is writable, if possible.
    file_check_directory($dir, TRUE);

    // Save the file.
    if (file_save_data($data, $dest)) {
      $language->javascript = $data_hash;
      // If we deleted a previous version of the file and we replace it with a
      // new one we have an update.
      if ($status == 'deleted') {
        $status = 'updated';
      }
      // If the file did not exist previously and the data has changed we have
      // a fresh creation.
      elseif ($changed_hash) {
        $status = 'created';
      }
      // If the data hash is unchanged the translation was lost and has to be
      // rebuilt.
      else {
        $status = 'rebuilt';
      }
    }
    else {
      $language->javascript = '';
      $status = 'error';
    }
  }

  // Save the new JavaScript hash (or an empty value if the file just got
  // deleted). Act only if some operation was executed that changed the hash
  // code.
  if ($status && $changed_hash) {
    db_query("UPDATE {languages} SET javascript = '%s' WHERE language = '%s'", $language->javascript, $language->language);

    // Update the default language variable if the default language has been altered.
    // This is necessary to keep the variable consistent with the database
    // version of the language and to prevent checking against an outdated hash.
    $default_langcode = language_default('language');
    if ($default_langcode == $language->language) {
      $default = db_fetch_object(db_query("SELECT * FROM {languages} WHERE language = '%s'", $default_langcode));
      variable_set('language_default', $default);
    }
  }

  // Log the operation and return success flag.
  switch ($status) {
    case 'updated':
      watchdog('locale', 'Updated JavaScript translation file for the language %language.', array('%language' => t($language->name)));
      return TRUE;
    case 'rebuilt':
      watchdog('locale', 'JavaScript translation file %file.js was lost.', array('%file' => $language->javascript), WATCHDOG_WARNING);
      // Proceed to the 'created' case as the JavaScript translation file has
      // been created again.
    case 'created':
      watchdog('locale', 'Created JavaScript translation file for the language %language.', array('%language' => t($language->name)));
      return TRUE;
    case 'deleted':
      watchdog('locale', 'Removed JavaScript translation file for the language %language, because no translations currently exist for that language.', array('%language' => t($language->name)));
      return TRUE;
    case 'error':
      watchdog('locale', 'An error occurred during creation of the JavaScript translation file for the language %language.', array('%language' => t($language->name)), WATCHDOG_ERROR);
      return FALSE;
    default:
      // No operation needed.
      return TRUE;
  }
}