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// Copyright 2009 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.
package godoc
import (
"net/http"
"os"
"path/filepath"
"runtime"
"strings"
"golang.org/x/tools/godoc/golangorgenv"
)
// Page describes the contents of the top-level godoc webpage.
type Page struct {
Title string
Tabtitle string
Subtitle string
SrcPath string
Query string
Body []byte
GoogleCN bool // page is being served from golang.google.cn
TreeView bool // page needs to contain treeview related js and css
// filled in by ServePage
SearchBox bool
Playground bool
Version string
GoogleAnalytics string
}
func (p *Presentation) ServePage(w http.ResponseWriter, page Page) {
if page.Tabtitle == "" {
page.Tabtitle = page.Title
}
page.SearchBox = p.Corpus.IndexEnabled
page.Playground = p.ShowPlayground
page.Version = runtime.Version()
page.GoogleAnalytics = p.GoogleAnalytics
applyTemplateToResponseWriter(w, p.GodocHTML, page)
}
func (p *Presentation) ServeError(w http.ResponseWriter, r *http.Request, relpath string, err error) {
w.WriteHeader(http.StatusNotFound)
if perr, ok := err.(*os.PathError); ok {
rel, err := filepath.Rel(runtime.GOROOT(), perr.Path)
if err != nil {
perr.Path = "REDACTED"
} else {
perr.Path = filepath.Join("$GOROOT", rel)
}
}
p.ServePage(w, Page{
Title: "File " + relpath,
Subtitle: relpath,
Body: applyTemplate(p.ErrorHTML, "errorHTML", err),
GoogleCN: googleCN(r),
GoogleAnalytics: p.GoogleAnalytics,
})
}
// googleCN reports whether request r is considered
// to be served from golang.google.cn.
func googleCN(r *http.Request) bool {
if r.FormValue("googlecn") != "" {
return true
}
if strings.HasSuffix(r.Host, ".cn") {
return true
}
if !golangorgenv.CheckCountry() {
return false
}
switch r.Header.Get("X-Appengine-Country") {
case "", "ZZ", "CN":
return true
}
return false
}
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