public static function getCurrent()
{
$url = new Url();
$url->setScheme(!empty($_SERVER['HTTPS']) && strcasecmp($_SERVER['HTTPS'], 'off') ? 'https' : 'http');
$url->setUser(isset($_SERVER['PHP_AUTH_USER']) ? $_SERVER['PHP_AUTH_USER'] : null);
$url->setPassword(isset($_SERVER['PHP_AUTH_PW']) ? $_SERVER['PHP_AUTH_PW'] : null);
if ((isset($_SERVER[$hostname = 'HTTP_HOST']) || isset($_SERVER[$hostname = 'SERVER_NAME'])) && preg_match('#^([a-z0-9_.-]+|\\[[a-f0-9:]+\\])(:\\d+)?\\z#i', $_SERVER[$hostname], $pair)) {
$url->setHost(strtolower($pair[1]));
if (isset($pair[2])) {
$url->setPort(substr($pair[2], 1));
} else {
if (isset($_SERVER['SERVER_PORT'])) {
$url->setPort($_SERVER['SERVER_PORT']);
}
}
}
$requestUrl = StringUtils::replace(isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : '/', ['~[.,)]\\z~' => '']);
$tmp = explode('?', $requestUrl, 2);
$path = Url::unescape($tmp[0], '%/?#');
$url->setPath($path);
$url->setQuery(isset($tmp[1]) ? $tmp[1] : null);
$lpath = strtolower($path);
$script = isset($_SERVER['SCRIPT_NAME']) ? strtolower($_SERVER['SCRIPT_NAME']) : null;
if ($lpath !== $script) {
$max = min(strlen($lpath), strlen($script));
for ($i = 0; $i < $max && $lpath[$i] === $script[$i]; $i++) {
/** no-op */
}
$path = $i ? substr($path, 0, strrpos($path, '/', $i - strlen($path) - 1) + 1) : '/';
}
$url->setScriptPath($path);
$query = $url->getQueryParameters();
$blacklist = '\\x09\\x0A\\x0D\\x20-\\x7E\\xA0-\\x{10FFFF}';
$chars = '~^[' . $blacklist . ']*+\\z~u';
$list = [&$query];
while (list($key, $source) = each($list)) {
foreach ($source as $k => $v) {
if (is_string($k) && (!preg_match($chars, $k) || preg_last_error())) {
unset($list[$key][$k]);
} else {
if (is_array($v)) {
$list[$key][$k] = $v;
$list[] =& $list[$key][$k];
} else {
$list[$key][$k] = (string) preg_replace('~[^' . $blacklist . ']+~u', '', $v);
}
}
}
}
unset($list, $key, $source, $k, $v);
$url->setQuery($query);
return $url;
}
