context.go
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package beego
import (
"bytes"
"fmt"
"mime"
"net/http"
"strings"
)
type Context struct {
ResponseWriter http.ResponseWriter
Request *http.Request
RequestBody []byte
Params map[string]string
}
func (ctx *Context) WriteString(content string) {
ctx.ResponseWriter.Write([]byte(content))
}
func (ctx *Context) Abort(status int, body string) {
ctx.ResponseWriter.WriteHeader(status)
ctx.ResponseWriter.Write([]byte(body))
}
func (ctx *Context) Redirect(status int, url_ string) {
ctx.ResponseWriter.Header().Set("Location", url_)
ctx.ResponseWriter.WriteHeader(status)
}
func (ctx *Context) NotModified() {
ctx.ResponseWriter.WriteHeader(304)
}
func (ctx *Context) NotFound(message string) {
ctx.ResponseWriter.WriteHeader(404)
ctx.ResponseWriter.Write([]byte(message))
}
//Sets the content type by extension, as defined in the mime package.
//For example, ctx.ContentType("json") sets the content-type to "application/json"
func (ctx *Context) ContentType(ext string) {
if !strings.HasPrefix(ext, ".") {
ext = "." + ext
}
ctype := mime.TypeByExtension(ext)
if ctype != "" {
ctx.ResponseWriter.Header().Set("Content-Type", ctype)
}
}
func (ctx *Context) SetHeader(hdr string, val string, unique bool) {
if unique {
ctx.ResponseWriter.Header().Set(hdr, val)
} else {
ctx.ResponseWriter.Header().Add(hdr, val)
}
}
//Sets a cookie -- duration is the amount of time in seconds. 0 = forever
//params:
//string name
//string value
//int64 expire = 0
//string $path
//string $domain
//bool $secure = false
//bool $httponly = false
func (ctx *Context) SetCookie(name string, value string, others ...interface{}) {
var b bytes.Buffer
fmt.Fprintf(&b, "%s=%s", sanitizeName(name), sanitizeValue(value))
if len(others) > 0 {
switch others[0].(type) {
case int:
fmt.Fprintf(&b, "; Max-Age=%d", others[0].(int))
case int64:
fmt.Fprintf(&b, "; Max-Age=%d", others[0].(int64))
case int32:
fmt.Fprintf(&b, "; Max-Age=%d", others[0].(int32))
}
} else {
fmt.Fprintf(&b, "; Max-Age=0")
}
if len(others) > 1 {
fmt.Fprintf(&b, "; Path=%s", sanitizeValue(others[1].(string)))
}
if len(others) > 2 {
fmt.Fprintf(&b, "; Domain=%s", sanitizeValue(others[2].(string)))
}
if len(others) > 3 {
fmt.Fprintf(&b, "; Secure")
}
if len(others) > 4 {
fmt.Fprintf(&b, "; HttpOnly")
}
ctx.SetHeader("Set-Cookie", b.String(), true)
}
var cookieNameSanitizer = strings.NewReplacer("\n", "-", "\r", "-")
func sanitizeName(n string) string {
return cookieNameSanitizer.Replace(n)
}
var cookieValueSanitizer = strings.NewReplacer("\n", " ", "\r", " ", ";", " ")
func sanitizeValue(v string) string {
return cookieValueSanitizer.Replace(v)
}
func (ctx *Context) GetCookie(key string) string {
keycookie, err := ctx.Request.Cookie(key)
if err != nil {
return ""
}
return keycookie.Value
}