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115 lines
2.4 KiB
Go
Executable File
115 lines
2.4 KiB
Go
Executable File
// Copyright 2014 Manu Martinez-Almeida. All rights reserved.
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// Use of this source code is governed by a MIT style
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// license that can be found in the LICENSE file.
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package render
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import (
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"bytes"
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"html/template"
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"net/http"
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"github.com/gin-gonic/gin/json"
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)
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type JSON struct {
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Data interface{}
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}
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type IndentedJSON struct {
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Data interface{}
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}
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type SecureJSON struct {
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Prefix string
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Data interface{}
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}
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type JsonpJSON struct {
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Callback string
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Data interface{}
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}
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type SecureJSONPrefix string
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var jsonContentType = []string{"application/json; charset=utf-8"}
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var jsonpContentType = []string{"application/javascript; charset=utf-8"}
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func (r JSON) Render(w http.ResponseWriter) (err error) {
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return WriteJSON(w, r.Data)
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}
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func (r JSON) WriteContentType(w http.ResponseWriter) {
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writeContentType(w, jsonContentType)
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}
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func WriteJSON(w http.ResponseWriter, obj interface{}) error {
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writeContentType(w, jsonContentType)
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jsonBytes, err := json.Marshal(obj)
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if err != nil {
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return err
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}
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_, err = w.Write(jsonBytes)
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return err
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}
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func (r IndentedJSON) Render(w http.ResponseWriter) error {
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r.WriteContentType(w)
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jsonBytes, err := json.MarshalIndent(r.Data, "", " ")
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if err != nil {
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return err
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}
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_, err = w.Write(jsonBytes)
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return err
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}
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func (r IndentedJSON) WriteContentType(w http.ResponseWriter) {
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writeContentType(w, jsonContentType)
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}
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func (r SecureJSON) Render(w http.ResponseWriter) error {
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r.WriteContentType(w)
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jsonBytes, err := json.Marshal(r.Data)
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if err != nil {
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return err
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}
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// if the jsonBytes is array values
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if bytes.HasPrefix(jsonBytes, []byte("[")) && bytes.HasSuffix(jsonBytes, []byte("]")) {
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jsonBytes = append([]byte(r.Prefix), jsonBytes...)
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}
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_, err = w.Write(jsonBytes)
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return err
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}
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func (r SecureJSON) WriteContentType(w http.ResponseWriter) {
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writeContentType(w, jsonContentType)
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}
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func (r JsonpJSON) Render(w http.ResponseWriter) (err error) {
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r.WriteContentType(w)
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ret, err := json.Marshal(r.Data)
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if err != nil {
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return err
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}
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if r.Callback == "" {
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_, err := w.Write(ret)
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return err
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}
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callback := template.JSEscapeString(r.Callback)
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tmp := []byte("")
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tmp = append(tmp, []byte(callback)...)
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tmp = append(tmp, []byte("(")...)
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tmp = append(tmp, ret...)
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tmp = append(tmp, []byte(")")...)
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_, err = w.Write(tmp)
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return err
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}
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func (r JsonpJSON) WriteContentType(w http.ResponseWriter) {
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writeContentType(w, jsonpContentType)
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}
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