많은 유틸리티 함수를 Util, FileUtil, WebUtil로 이동

src/sammo/Json.php

@@ -2,15 +2,6 @@
 namespace sammo;
 
 class Json{
-    private static function setHeaderNoCache(){
-        if(!headers_sent()) {
-            header('Expires: Wed, 01 Jan 2014 00:00:00 GMT');
-            header('Cache-Control: no-store, no-cache, must-revalidate');
-            header('Cache-Control: post-check=0, pre-check=0', FALSE);
-            header('Pragma: no-cache');
-        }
-    }
-
     public static function encode($value, $pretty = false){
         if($pretty){
             $flag = JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT;
@@ -27,7 +18,7 @@ class Json{
 
     public static function die($value, $noCache = true, $pretty = false, $die = true){
         if($noCache){
-            self::setHeaderNoCache();
+            WebUtil::setHeaderNoCache();
         }
         
         header('Content-Type: application/json');