/**
* Returns an instance of Collator class (ICU) created for a specified language. This collator treats substrings of digits as numbers.
* @param string $language (optional) Language indentificator. If it is omited, the current interface language is assumed.
* @return object Returns a instance of Collator class that is suitable for alpha-numerical comparisons.
*/
function _api_get_alpha_numerical_collator($language = null)
{
static $collator = array();
if (empty($language)) {
$language = api_get_interface_language();
}
if (!isset($collator[$language])) {
$locale = _api_get_locale_from_language($language);
$collator[$language] = collator_create($locale);
if (is_object($collator[$language])) {
collator_set_attribute($collator[$language], Collator::CASE_FIRST, Collator::UPPER_FIRST);
collator_set_attribute($collator[$language], Collator::NUMERIC_COLLATION, Collator::ON);
}
}
return $collator[$language];
}
function ut_coll_set_attribute($coll, $attr, $val)
{
return $GLOBALS['oo-mode'] ? $coll->setAttribute($attr, $val) : collator_set_attribute($coll, $attr, $val);
}
