htmlarea should provide language support

I can't help feeling that there is an easier way to find out the site default language, but until somebody answers my query, here is a suggestion for code to detect the user language to display in htmlarea.
Note that this makes one key assumption: that the Drupal language codes are the same as the xinha ones - however, as long as everybody sticks to the approved iso standard as mentioned in the Drupal locale module you should be ok.

This extra function will return English as default if the locale module is disabled, or if the user language is not available for xinha. Anonymous users get the site default language (or English if site default unavailable for xinha).

NOTE: irritatingly, there is not a function to get the "default language" from the locale list. However, looking at the code in drupaldocs, I see that the array is sorted by "isdefault" - ie the first item in the array is the default language. This is not very satisfactory in my view - but I didn't like the idea of writing another select statement.

Here is the function:

function _htmlarea_lang() {
  global $user;
  if (!module_exist('locale')) {
    return 'en';
    }
  else {
    if ($user->language) {
      if (file_exists(_htmlarea_get_jsdir()."/lang/$user->language.js")) {
        return $user->language;
        }
      else {
        return 'en';
        }
      }
    else {
      $langs = (locale_supported_languages());
      $ulang = key($langs['name']);
      if (file_exists(_htmlarea_get_jsdir()."/lang/$ulang.js")) {
        return $ulang;
        }
      else {
        return 'en';
        }
      }
    }
}

You then modify the line of code in _htmlarea_load_js() which takes care of the editor language, to this:

  $output[] = "  _editor_lang = \""._htmlarea_lang()."\";";

Hope this helps

All being well I will be testing this for several languages (though without the i18n module, which I would love to use but prefer to avoid till it gets into core) over the next 2-3 weeks. So will let you know how it goes. I presume this means that I should install the cvs version of the module rather than the standard 4.6.0 one?

Just discovered a minor glitch in the htmlarea language settings. I am testing in the Spanish language, and find that the special characters do not display properly. I presume that this is because Drupal does everything in UTF-8 and the language-specific javascript is in ISO8859. Don't know if it is possible to convert the javascripts in "lang" directory to UTF-8?

Just installed the cvs version dated "v 1.78 2005/05/25 13:15:02" and there is a call to "module_exists(i18n)" - which doesn't exist. It should read "module_exist(i18n)".