mirror of https://github.com/go-gitea/gitea
Git with a cup of tea, painless self-hosted git service
Mirror for internal git.with.parts use
https://git.with.parts
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
2.2 KiB
79 lines
2.2 KiB
// Copyright 2013 The Go Authors. All rights reserved.
|
|
//
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file or at
|
|
// https://developers.google.com/open-source/licenses/bsd.
|
|
|
|
package httputil
|
|
|
|
import (
|
|
"github.com/golang/gddo/httputil/header"
|
|
"net/http"
|
|
"strings"
|
|
)
|
|
|
|
// NegotiateContentEncoding returns the best offered content encoding for the
|
|
// request's Accept-Encoding header. If two offers match with equal weight and
|
|
// then the offer earlier in the list is preferred. If no offers are
|
|
// acceptable, then "" is returned.
|
|
func NegotiateContentEncoding(r *http.Request, offers []string) string {
|
|
bestOffer := "identity"
|
|
bestQ := -1.0
|
|
specs := header.ParseAccept(r.Header, "Accept-Encoding")
|
|
for _, offer := range offers {
|
|
for _, spec := range specs {
|
|
if spec.Q > bestQ &&
|
|
(spec.Value == "*" || spec.Value == offer) {
|
|
bestQ = spec.Q
|
|
bestOffer = offer
|
|
}
|
|
}
|
|
}
|
|
if bestQ == 0 {
|
|
bestOffer = ""
|
|
}
|
|
return bestOffer
|
|
}
|
|
|
|
// NegotiateContentType returns the best offered content type for the request's
|
|
// Accept header. If two offers match with equal weight, then the more specific
|
|
// offer is preferred. For example, text/* trumps */*. If two offers match
|
|
// with equal weight and specificity, then the offer earlier in the list is
|
|
// preferred. If no offers match, then defaultOffer is returned.
|
|
func NegotiateContentType(r *http.Request, offers []string, defaultOffer string) string {
|
|
bestOffer := defaultOffer
|
|
bestQ := -1.0
|
|
bestWild := 3
|
|
specs := header.ParseAccept(r.Header, "Accept")
|
|
for _, offer := range offers {
|
|
for _, spec := range specs {
|
|
switch {
|
|
case spec.Q == 0.0:
|
|
// ignore
|
|
case spec.Q < bestQ:
|
|
// better match found
|
|
case spec.Value == "*/*":
|
|
if spec.Q > bestQ || bestWild > 2 {
|
|
bestQ = spec.Q
|
|
bestWild = 2
|
|
bestOffer = offer
|
|
}
|
|
case strings.HasSuffix(spec.Value, "/*"):
|
|
if strings.HasPrefix(offer, spec.Value[:len(spec.Value)-1]) &&
|
|
(spec.Q > bestQ || bestWild > 1) {
|
|
bestQ = spec.Q
|
|
bestWild = 1
|
|
bestOffer = offer
|
|
}
|
|
default:
|
|
if spec.Value == offer &&
|
|
(spec.Q > bestQ || bestWild > 0) {
|
|
bestQ = spec.Q
|
|
bestWild = 0
|
|
bestOffer = offer
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return bestOffer
|
|
}
|
|
|