autoload 경로 재 변경

kakao를 별도의 namespace로 분리
외부 class의 namespace 문제 해결

src/sammo/Json.php

@@ -0,0 +1,40 @@
+<?php
+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;
+        }
+        else{
+            $flag = JSON_UNESCAPED_UNICODE;
+        }
+        return json_encode($value, $flag); 
+    }
+
+    public static function decode($value){
+        return json_decode($value, true);
+    }
+
+    public static function die($value, $noCache = true, $pretty = false, $die = true){
+        if($noCache){
+            self::setHeaderNoCache();
+        }
+        
+        header('Content-Type: application/json');
+    
+        echo Json::encode($value, $pretty); 
+        if($die){
+            die();
+        }
+    }
+}