/**
* This method returns the languages available in TAO.
*
* @access public
* @author Jerome Bogaerts, <*****@*****.**>
* @param boolean langName If set to true, an associative array where keys are language codes and values are language labels. If set to false (default), a simple array of language codes is returned.
* @return array
* @throws common_exception_InconsistentData
*/
private static function getAvailableLangs()
{
//get it into the api only once
if (count(self::$availableLangs) == 0) {
try {
self::$availableLangs = common_cache_FileCache::singleton()->get(self::AVAILABLE_LANGS_CACHEKEY);
} catch (common_cache_NotFoundException $e) {
$langClass = new core_kernel_classes_Class(CLASS_LANGUAGES);
$valueProperty = new core_kernel_classes_Property(RDF_VALUE);
foreach ($langClass->getInstances() as $lang) {
$values = $lang->getPropertiesValues(array(RDF_VALUE, PROPERTY_LANGUAGE_USAGES, PROPERTY_LANGUAGE_ORIENTATION));
if (count($values[RDF_VALUE]) != 1) {
throw new common_exception_InconsistentData('Error with value of language ' . $lang->getUri());
}
$value = current($values[RDF_VALUE])->__toString();
$usages = array();
foreach ($values[PROPERTY_LANGUAGE_USAGES] as $usage) {
$usages[] = $usage->getUri();
}
if (count($values[PROPERTY_LANGUAGE_ORIENTATION]) != 1) {
common_Logger::w('Error with orientation of language ' . $lang->getUri());
$orientation = INSTANCE_ORIENTATION_LTR;
} else {
$orientation = current($values[PROPERTY_LANGUAGE_ORIENTATION])->getUri();
}
self::$availableLangs[$value] = array('uri' => $lang->getUri(), PROPERTY_LANGUAGE_USAGES => $usages, PROPERTY_LANGUAGE_ORIENTATION => $orientation);
}
common_cache_FileCache::singleton()->put(self::$availableLangs, self::AVAILABLE_LANGS_CACHEKEY);
}
}
return self::$availableLangs;
}
