| // 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" |
| |
| "golang.org/x/build/repos" |
| ) |
| |
| const xPrefix = "/x/" |
| |
| func init() { |
| http.HandleFunc(xPrefix, xHandler) |
| } |
| |
| func xHandler(w http.ResponseWriter, r *http.Request) { |
| if !strings.HasPrefix(r.URL.Path, xPrefix) { |
| // Shouldn't happen if handler is registered correctly. |
| http.Redirect(w, r, "https://godoc.org/-/subrepo", http.StatusTemporaryRedirect) |
| return |
| } |
| proj, suffix := strings.TrimPrefix(r.URL.Path, xPrefix), "" |
| if i := strings.Index(proj, "/"); i != -1 { |
| proj, suffix = proj[:i], proj[i:] |
| } |
| if proj == "" { |
| http.Redirect(w, r, "https://godoc.org/-/subrepo", http.StatusTemporaryRedirect) |
| return |
| } |
| repo, ok := repos.ByGerritProject[proj] |
| if !ok || !strings.HasPrefix(repo.ImportPath, "golang.org/x/") { |
| http.NotFound(w, r) |
| return |
| } |
| docSite := "godoc.org" |
| if repo.UsePkgGoDev() { |
| docSite = "pkg.go.dev" |
| } |
| data := struct { |
| DocSite string // Website providing documentation, either "godoc.org" or "pkg.go.dev". |
| Proj string // Gerrit project ("net", "sys", etc) |
| Suffix string // optional "/path" for requests like /x/PROJ/path |
| }{docSite, proj, suffix} |
| 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/x/{{.Proj}} git https://go.googlesource.com/{{.Proj}}"> |
| <meta name="go-source" content="golang.org/x/{{.Proj}} https://github.com/golang/{{.Proj}}/ https://github.com/golang/{{.Proj}}/tree/master{/dir} https://github.com/golang/{{.Proj}}/blob/master{/dir}/{file}#L{line}"> |
| <meta http-equiv="refresh" content="0; url=https://{{.DocSite}}/golang.org/x/{{.Proj}}{{.Suffix}}"> |
| </head> |
| <body> |
| Nothing to see here; <a href="https://{{.DocSite}}/golang.org/x/{{.Proj}}{{.Suffix}}">move along</a>. |
| </body> |
| </html> |
| `)) |
