/**
* Find out a user's institution language. If they belong to one institution that has specified
* a language, then this will be that institution's language. If they belong to multiple
* institutions that have specified languages, it will be the arbitrarily "first" institution.
* If they belong to no institution that has specified a language, it will return null.
*
* @param int $userid Which user to check (defaults to $USER)
* @param string $sourceinst If provided, the source institution for the language will be
* returned here by reference
* @return string A language, or 'default'
*/
function get_user_institution_language($userid = null, &$sourceinst = null)
{
global $USER;
if ($userid == null) {
$userid = $USER->id;
}
$instlangs = get_configs_user_institutions('lang', $userid);
// Every user belongs to at least one institution
foreach ($instlangs as $name => $lang) {
$sourceinst = $name;
$instlang = $lang;
// If the user belongs to multiple institutions, arbitrarily use the language
// from the first one that has specified a language.
if (!empty($instlang) && $instlang != 'default' && language_installed($instlang)) {
break;
}
}
if (!$instlang) {
$instlang = 'default';
}
return $instlang;
}
/**
* This function returns the current
* language to use, either for a given user
* or sitewide, or the default
*
* @return string
*/
function current_language()
{
global $USER, $CFG, $SESSION;
if ($USER instanceof User) {
$lang = $USER->get_account_preference('lang');
if ($lang !== null && $lang != 'default') {
if (language_installed($lang)) {
return $lang;
}
$USER->set_account_preference('lang', 'default');
}
}
if (is_a($SESSION, 'Session')) {
$sesslang = $SESSION->get('lang');
if (!empty($sesslang) && $sesslang != 'default') {
return $sesslang;
}
}
if (!empty($CFG->lang)) {
return $CFG->lang;
}
return 'en.utf8';
}
/**
* This function returns the current
* language to use, either for a given user
* or sitewide, or the default
*
* @return string
*/
function current_language()
{
global $USER, $CFG, $SESSION;
static $userlang, $lastlang;
$loggedin = $USER instanceof User && $USER->is_logged_in();
if (!isset($userlang) && $loggedin) {
$userlang = $USER->get_account_preference('lang');
if ($userlang !== null && $userlang != 'default') {
if (!language_installed($userlang)) {
$USER->set_account_preference('lang', 'default');
$userlang = 'default';
}
}
}
if (!empty($userlang) && $userlang != 'default') {
$lang = $userlang;
} else {
if (!$loggedin && is_a($SESSION, 'Session')) {
$sesslang = $SESSION->get('lang');
if (!empty($sesslang) && $sesslang != 'default') {
$lang = $sesslang;
}
}
}
if (empty($lang)) {
$lang = !empty($CFG->lang) ? $CFG->lang : 'en.utf8';
}
if ($lang == $lastlang) {
return $lang;
}
set_locale_for_language($lang);
return $lastlang = $lang;
}
/**
* This function returns the current
* language to use, either for a given user
* or sitewide, or the default
*
* @return string
*/
function current_language()
{
global $USER, $CFG, $SESSION;
static $lang;
if (!empty($lang)) {
return $lang;
}
if ($USER instanceof User) {
$userlang = $USER->get_account_preference('lang');
if ($userlang !== null && $userlang != 'default') {
if (language_installed($userlang)) {
$lang = $userlang;
} else {
$USER->set_account_preference('lang', 'default');
}
}
}
if (empty($lang) && is_a($SESSION, 'Session')) {
$sesslang = $SESSION->get('lang');
if (!empty($sesslang) && $sesslang != 'default') {
$lang = $sesslang;
}
}
if (empty($lang)) {
$lang = !empty($CFG->lang) ? $CFG->lang : 'en.utf8';
}
// Set locale. We are probably being called from get_string_location.
// $lang had better be non-empty, or it will call us again.
if ($args = split(',', get_string_location('locales', 'langconfig', array(), 'raw_langstring', $lang))) {
array_unshift($args, LC_ALL);
call_user_func_array('setlocale', $args);
}
return $lang;
}
