Switch to dep for dependency management

vendor/github.com/gin-gonic/gin/render/json.go

@@ -5,21 +5,41 @@
 package render
 
 import (
-	"encoding/json"
+	"bytes"
+	"fmt"
+	"html/template"
 	"net/http"
+
+	"github.com/gin-gonic/gin/json"
 )
 
-type (
-	JSON struct {
-		Data interface{}
-	}
+type JSON struct {
+	Data interface{}
+}
 
-	IndentedJSON struct {
-		Data interface{}
-	}
-)
+type IndentedJSON struct {
+	Data interface{}
+}
+
+type SecureJSON struct {
+	Prefix string
+	Data   interface{}
+}
+
+type JsonpJSON struct {
+	Callback string
+	Data     interface{}
+}
+
+type AsciiJSON struct {
+	Data interface{}
+}
+
+type SecureJSONPrefix string
 
 var jsonContentType = []string{"application/json; charset=utf-8"}
+var jsonpContentType = []string{"application/javascript; charset=utf-8"}
+var jsonAsciiContentType = []string{"application/json"}
 
 func (r JSON) Render(w http.ResponseWriter) (err error) {
 	if err = WriteJSON(w, r.Data); err != nil {
@@ -55,3 +75,72 @@ func (r IndentedJSON) Render(w http.ResponseWriter) error {
 func (r IndentedJSON) WriteContentType(w http.ResponseWriter) {
 	writeContentType(w, jsonContentType)
 }
+
+func (r SecureJSON) Render(w http.ResponseWriter) error {
+	r.WriteContentType(w)
+	jsonBytes, err := json.Marshal(r.Data)
+	if err != nil {
+		return err
+	}
+	// if the jsonBytes is array values
+	if bytes.HasPrefix(jsonBytes, []byte("[")) && bytes.HasSuffix(jsonBytes, []byte("]")) {
+		w.Write([]byte(r.Prefix))
+	}
+	w.Write(jsonBytes)
+	return nil
+}
+
+func (r SecureJSON) WriteContentType(w http.ResponseWriter) {
+	writeContentType(w, jsonContentType)
+}
+
+func (r JsonpJSON) Render(w http.ResponseWriter) (err error) {
+	r.WriteContentType(w)
+	ret, err := json.Marshal(r.Data)
+	if err != nil {
+		return err
+	}
+
+	if r.Callback == "" {
+		w.Write(ret)
+		return nil
+	}
+
+	callback := template.JSEscapeString(r.Callback)
+	w.Write([]byte(callback))
+	w.Write([]byte("("))
+	w.Write(ret)
+	w.Write([]byte(")"))
+
+	return nil
+}
+
+func (r JsonpJSON) WriteContentType(w http.ResponseWriter) {
+	writeContentType(w, jsonpContentType)
+}
+
+func (r AsciiJSON) Render(w http.ResponseWriter) (err error) {
+	r.WriteContentType(w)
+	ret, err := json.Marshal(r.Data)
+	if err != nil {
+		return err
+	}
+
+	var buffer bytes.Buffer
+	for _, r := range string(ret) {
+		cvt := ""
+		if r < 128 {
+			cvt = string(r)
+		} else {
+			cvt = fmt.Sprintf("\\u%04x", int64(r))
+		}
+		buffer.WriteString(cvt)
+	}
+
+	w.Write(buffer.Bytes())
+	return nil
+}
+
+func (r AsciiJSON) WriteContentType(w http.ResponseWriter) {
+	writeContentType(w, jsonAsciiContentType)
+}