/**
* Find the related code folding values for $char
*
* @param int $char decimal value of character
* @param string $type Type 'lower' or 'upper'. Defaults to 'lower'.
* @return array|null
*/
protected static function _find($char, $type = 'lower')
{
$found = array();
if (!isset(self::$_codeRange[$char])) {
$range = self::_codepoint($char);
if ($range === false) {
return null;
}
if (!Configure::configured('_cake_core_')) {
App::uses('PhpReader', 'Configure');
Configure::config('_cake_core_', new PhpReader(CAKE . 'Config' . DS));
}
Configure::load('unicode' . DS . 'casefolding' . DS . $range, '_cake_core_');
self::$_caseFold[$range] = Configure::read($range);
Configure::delete($range);
}
if (!self::$_codeRange[$char]) {
return null;
}
self::$_table = self::$_codeRange[$char];
$count = count(self::$_caseFold[self::$_table]);
for ($i = 0; $i < $count; $i++) {
if ($type === 'lower' && self::$_caseFold[self::$_table][$i][$type][0] === $char) {
$found[] = self::$_caseFold[self::$_table][$i];
} elseif ($type === 'upper' && self::$_caseFold[self::$_table][$i][$type] === $char) {
$found[] = self::$_caseFold[self::$_table][$i];
}
}
return $found;
}
