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x.go
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// 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.
// This file contains the handlers that serve go-import redirects for Go
// sub-repositories. It specifies the mapping from import paths like
// "golang.org/x/tools" to the actual repository locations.
package main
import (
"html/template"
"log"
"net/http"
"strings"
)
const xPrefix = "/x/"
type xRepo struct {
URL, VCS string
}
var xMap = map[string]xRepo{
"codereview": {"https://code.google.com/p/go.codereview", "hg"},
"benchmarks": {"https://go.googlesource.com/benchmarks", "git"},
"blog": {"https://go.googlesource.com/blog", "git"},
"crypto": {"https://go.googlesource.com/crypto", "git"},
"debug": {"https://go.googlesource.com/debug", "git"},
"exp": {"https://go.googlesource.com/exp", "git"},
"image": {"https://go.googlesource.com/image", "git"},
"mobile": {"https://go.googlesource.com/mobile", "git"},
"net": {"https://go.googlesource.com/net", "git"},
"oauth2": {"https://go.googlesource.com/oauth2", "git"},
"playground": {"https://go.googlesource.com/playground", "git"},
"review": {"https://go.googlesource.com/review", "git"},
"sys": {"https://go.googlesource.com/sys", "git"},
"talks": {"https://go.googlesource.com/talks", "git"},
"text": {"https://go.googlesource.com/text", "git"},
"tools": {"https://go.googlesource.com/tools", "git"},
}
func init() {
http.HandleFunc(xPrefix, xHandler)
}
func xHandler(w http.ResponseWriter, r *http.Request) {
head, tail := strings.TrimPrefix(r.URL.Path, xPrefix), ""
if i := strings.Index(head, "/"); i != -1 {
head, tail = head[:i], head[i:]
}
repo, ok := xMap[head]
if !ok {
http.NotFound(w, r)
return
}
data := struct {
Prefix, Head, Tail string
Repo xRepo
}{xPrefix, head, tail, repo}
if err := xTemplate.Execute(w, data); err != nil {
log.Println("xHandler:", err)
}
}
var xTemplate = template.Must(template.New("x").Parse(`<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<meta name="go-import" content="golang.org{{.Prefix}}{{.Head}} {{.Repo.VCS}} {{.Repo.URL}}">
<meta name="go-source" content="golang.org{{.Prefix}}{{.Head}} https://github.com/golang/{{.Head}}/ https://github.com/golang/{{.Head}}/tree/master{/dir} https://github.com/golang/{{.Head}}/blob/master{/dir}/{file}#L{line}">
<meta http-equiv="refresh" content="0; url=https://godoc.org/golang.org{{.Prefix}}{{.Head}}{{.Tail}}">
</head>
<body>
Nothing to see here; <a href="https://godoc.org/golang.org{{.Prefix}}{{.Head}}{{.Tail}}">move along</a>.
</body>
</html>
`))