/
http_context.go
228 lines (194 loc) · 5.7 KB
/
http_context.go
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package ogo
import (
"bytes"
"compress/flate"
"compress/gzip"
"encoding/json"
"html/template"
"net/http"
"path/filepath"
"strconv"
"strings"
"github.com/Odinman/ogo/utils"
)
/* {{{ func (rc *RESTContext) SetHeader(k,v string)
* set header
*/
func (rc *RESTContext) SetHeader(k, v string) {
rc.Response.Header().Set(k, v)
}
/* }}} */
/* {{{ func (rc *RESTContext) SetStatus(status int)
* 构建Status Code
*/
func (rc *RESTContext) SetStatus(status int) {
//rc.Response.WriteHeader(status)
rc.Status = status
}
/* }}} */
/* {{{ func (rc *RESTContext) Output(data interface{}) (err error)
*
*/
func (rc *RESTContext) Output(data interface{}) (err error) {
if (rc.Status == 0 || (rc.Status >= 200 && rc.Status < 300)) && rc.Accept == ContentTypeHTML { //用户需要HTML
tplFile := ""
// tpl file
if ti := rc.Route.Options.Get(KEY_TPL); ti != nil && ti.(string) != "" && utils.FileExists(ti.(string)) { //定义了tpl文件, 并且文件存在
tplFile = ti.(string)
} else if dt := filepath.Join(env.TplDir, rc.Request.URL.Path+".html"); utils.FileExists(dt) { //默认tpl文件, 为: tpldir+url.Path+".html"
tplFile = dt
}
if tplFile != "" {
if t, err := template.ParseFiles(tplFile); err == nil {
return t.Execute(rc.Response, data)
}
}
}
// 以下仍然返回json
rc.SetHeader("Content-Type", "application/json; charset=UTF-8")
var content []byte
if method := strings.ToLower(rc.Request.Method); method != "head" {
if data != nil {
if env.IndentJSON {
content, _ = json.MarshalIndent(data, "", " ")
} else {
content, _ = json.Marshal(data)
}
}
}
//write header & data
_, err = rc.WriteBytes(content)
return
}
/* }}} */
/* {{{ func (rc *RESTContext) HTTPOK(data []byte) (err error)
* 属于request的错误
*/
func (rc *RESTContext) HTTPOK(data []byte) (err error) {
rc.SetHeader("Content-Type", "text/html; charset=UTF-8")
rc.Status = http.StatusOK
// write data
_, err = rc.WriteBytes(data)
return
}
/* }}} */
/* {{{ func (rc *RESTContext) HTTPEmptyGif() (err error)
* 属于request的错误
*/
func (rc *RESTContext) HTTPEmptyGif() (err error) {
rc.SetHeader("Content-Type", "image/gif")
rc.Status = http.StatusOK
// write data
_, err = rc.WriteBytes(EmptyGifBytes)
return
}
/* }}} */
/* {{{ func (rc *RESTContext) HTTPBack() (err error)
* 属于request的错误
*/
func (rc *RESTContext) HTTPBack() (err error) {
rc.Status = http.StatusOK
rc.SetHeader("Content-Type", "text/html; charset=UTF-8")
rc.SetHeader("Cache-Control", "max-age=0")
rc.SetHeader("Cache-Control", "no-cache")
rc.SetHeader("Cache-Control", "must-revalidate")
rc.SetHeader("Cache-Control", "private")
rc.SetHeader("Expires", "Mon, 26 Jul 1997 05:00:00 GMT")
rc.SetHeader("Pragma", "no-cache")
// write data
data := []byte(`<?xml version="1.0"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Cache-Control" content="max-age=0" forua="true" />
<meta http-equiv="Cache-Control" content="no-cache" forua="true" />
<meta http-equiv="Cache-Control" content="must-revalidate" forua="true" />
<title></title>
</head>
<body><p><a href="javascript:history.back(1)">Back</a></p></body>
</html>`)
_, err = rc.WriteBytes(data)
return
}
/* }}} */
/* {{{ func (rc *RESTContext) HTTPRedirect(url string) (err error)
* 属于request的错误
*/
func (rc *RESTContext) HTTPRedirect(url string) (err error) {
rc.Status = http.StatusFound //302
rc.SetHeader("Content-Type", "text/html; charset=UTF-8")
rc.SetHeader("Cache-Control", "max-age=0")
rc.SetHeader("Cache-Control", "no-cache")
rc.SetHeader("Cache-Control", "must-revalidate")
rc.SetHeader("Cache-Control", "private")
rc.SetHeader("Expires", "Mon, 26 Jul 1997 05:00:00 GMT")
rc.SetHeader("Pragma", "no-cache")
rc.SetHeader("Location", url)
_, err = rc.WriteBytes([]byte{})
return
}
/* }}} */
/* {{{ func (rc *RESTContext) HTTPError(status int) (err error)
*
*/
func (rc *RESTContext) HTTPError(status int) (err error) {
rc.SetStatus(status)
// write data
err = rc.Output(rc.NewRESTError(status, nil))
return
}
/* }}} */
/* {{{ func (rc *RESTContext) WriteBytes(data []byte) (n int, e error)
* 输出内容,如果需要压缩,统一在这里进行
*/
func (rc *RESTContext) WriteBytes(data []byte) (n int, e error) {
if dLen := len(data); dLen > 0 { //有内容才需要
if env.EnableGzip == true && rc.Request.Header.Get("Accept-Encoding") != "" {
splitted := strings.SplitN(rc.Request.Header.Get("Accept-Encoding"), ",", -1)
encodings := make([]string, len(splitted))
for i, val := range splitted {
encodings[i] = strings.TrimSpace(val)
}
for _, val := range encodings {
if val == "gzip" {
rc.SetHeader("Content-Encoding", "gzip")
b := new(bytes.Buffer)
w, _ := gzip.NewWriterLevel(b, gzip.BestSpeed)
w.Write(data)
w.Close()
data = b.Bytes()
break
} else if val == "deflate" {
rc.SetHeader("Content-Encoding", "deflate")
b := new(bytes.Buffer)
w, _ := flate.NewWriter(b, flate.BestSpeed)
w.Write(data)
w.Close()
data = b.Bytes()
break
}
}
}
rc.ContentLength = dLen
rc.SetHeader("Content-Length", strconv.Itoa(rc.ContentLength))
}
if rc.Status == 0 {
rc.Status = http.StatusOK
}
//在Write之前要WriteHeader
rc.Response.WriteHeader(rc.Status)
if len(data) > 0 {
_, e = rc.Response.Write(data)
}
return
}
/* }}} */
/* {{{ func (rc *RESTContext) ServeBinary(mimetype string, data []byte)
* 直接出二进制内容
*/
func (rc *RESTContext) ServeBinary(mimetype string, data []byte) {
rc.SetHeader("Content-Type", mimetype)
rc.WriteBytes(data)
}
/* }}} */