/**
* @return LBoxFilesCombineJS
* @throws Exception
*/
public static function getInstance()
{
try {
if (!self::$instance instanceof LBoxFilesCombineJS) {
self::$instance = new LBoxFilesCombineJS();
}
return self::$instance;
} catch (Exception $e) {
throw $e;
}
}
/**
* kombinuje externi JS do jednoho verzovaneho a nahrazuje v hlavickach jejich includy
* @param string $input
* @return string
*/
protected function combineJS($input = "")
{
try {
switch (LBoxConfigSystem::getInstance()->getParamByPath("output/js_combine")) {
case 0:
return $input;
break;
case -1:
if (LBOX_REQUEST_IP == "127.0.0.1") {
return $input;
}
break;
}
$out = $input;
// parseout html header
$regHeader = "<head((\\s+\\w+(\\s*=\\s*(?:\".*?\"|'.*?'|[^'\">\\s]+))?)+\\s*|\\s*)>(.*)<\\/head>";
$retHeader = preg_match_all("/{$regHeader}/si", $out, $regsHeader);
$header = reset(reset($regsHeader));
// once combined code check
if (strpos($header, str_replace(LBOX_PATH_PROJECT, "", LBoxFilesCombineJS::getInstance()->getPathDestination()))) {
return $input;
}
// get header javascripts
$template = '<script type="text/javascript" src="<src>"></script>';
$reg = $template;
$reg = str_ireplace("/", '\\/', $reg);
$reg = str_ireplace("<src>", '(.[^>]*)', $reg);
$reg = "/{$reg}/si";
$files = array();
$ret = preg_match_all($reg, $header, $regs);
foreach ($regs[1] as $k => $reg) {
// only local files
if (preg_match("/^http(s)?:/", $reg)) {
unset($regs[0][$k]);
unset($regs[1][$k]);
continue;
}
$files[] = $reg;
}
//LBoxFirePHP::log($files);
if (count($files) > 0) {
$i = 1;
foreach ($regs[0] as $reg) {
$replace = $i == count($regs[0]) ? str_ireplace("<src>", LBoxFilesCombineJS::getInstance()->combine($files), $template) : "";
//LBoxFirePHP::log($reg);
//LBoxFirePHP::warn($replace);
$out = str_replace($reg, $replace, $out);
$i++;
}
}
return $out;
} catch (Exception $e) {
throw $e;
}
}
