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// Copyright 2010 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 main
import (
"encoding/json"
"go/format"
"log"
"net/http"
"text/template"
"golang.org/x/tools/godoc"
"golang.org/x/tools/godoc/redirect"
"golang.org/x/tools/godoc/vfs"
)
// This package registers "/compile" and "/share" handlers
// that redirect to the golang.org playground.
import _ "golang.org/x/tools/playground"
var (
pres *godoc.Presentation
fs = vfs.NameSpace{}
)
func registerHandlers(pres *godoc.Presentation) {
if pres == nil {
panic("nil Presentation")
}
mux := http.NewServeMux()
mux.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
if req.URL.Path == "/" {
http.Redirect(w, req, "/pkg/", http.StatusFound)
return
}
pres.ServeHTTP(w, req)
})
mux.Handle("/pkg/C/", redirect.Handler("/cmd/cgo/"))
mux.HandleFunc("/fmt", fmtHandler)
redirect.Register(mux)
http.Handle("/", mux)
}
func readTemplate(name string) *template.Template {
if pres == nil {
panic("no global Presentation set yet")
}
path := "lib/godoc/" + name
// use underlying file system fs to read the template file
// (cannot use template ParseFile functions directly)
data, err := vfs.ReadFile(fs, path)
if err != nil {
log.Fatal("readTemplate: ", err)
}
// be explicit with errors (for app engine use)
t, err := template.New(name).Funcs(pres.FuncMap()).Parse(string(data))
if err != nil {
log.Fatal("readTemplate: ", err)
}
return t
}
func readTemplates(p *godoc.Presentation) {
p.CallGraphHTML = readTemplate("callgraph.html")
p.DirlistHTML = readTemplate("dirlist.html")
p.ErrorHTML = readTemplate("error.html")
p.ExampleHTML = readTemplate("example.html")
p.GodocHTML = readTemplate("godoc.html")
p.ImplementsHTML = readTemplate("implements.html")
p.MethodSetHTML = readTemplate("methodset.html")
p.PackageHTML = readTemplate("package.html")
p.PackageRootHTML = readTemplate("packageroot.html")
p.SearchHTML = readTemplate("search.html")
p.SearchDocHTML = readTemplate("searchdoc.html")
p.SearchCodeHTML = readTemplate("searchcode.html")
p.SearchTxtHTML = readTemplate("searchtxt.html")
}
type fmtResponse struct {
Body string
Error string
}
// fmtHandler takes a Go program in its "body" form value, formats it with
// standard gofmt formatting, and writes a fmtResponse as a JSON object.
func fmtHandler(w http.ResponseWriter, r *http.Request) {
resp := new(fmtResponse)
body, err := format.Source([]byte(r.FormValue("body")))
if err != nil {
resp.Error = err.Error()
} else {
resp.Body = string(body)
}
w.Header().Set("Content-type", "application/json; charset=utf-8")
json.NewEncoder(w).Encode(resp)
}
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