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go.tools/cmd/godoc: add redirect helpers

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Previously these helpers were added by a private deployment script.
There's no reason why they shouldn't be part of godoc proper now
that it's in the go.tools repository.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13722043
This commit is contained in:
Andrew Gerrand 2013-09-16 11:41:03 +10:00
parent ece05f910e
commit 1564988897
1 changed files with 55 additions and 0 deletions
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55
cmd/godoc/handlers.go
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@ -15,6 +15,7 @@ package main
import (
"log"
"net/http"
"regexp"
"text/template"
"code.google.com/p/go.tools/godoc"
@ -36,6 +37,15 @@ func registerHandlers(pres *godoc.Presentation) {
http.Handle("/", pres)
handlePathRedirects(pkgRedirects, "/pkg/")
handlePathRedirects(cmdRedirects, "/cmd/")
for prefix, redirect := range prefixHelpers {
p := "/" + prefix + "/"
h := makePrefixRedirectHandler(p, redirect)
http.HandleFunc(p, h)
}
for path, redirect := range redirects {
h := makeRedirectHandler(redirect)
http.HandleFunc(path, h)
}
}
func readTemplate(name string) *template.Template {
@ -114,6 +124,32 @@ var cmdRedirects = map[string]string{
"goyacc": "yacc",
}
var redirects = map[string]string{
"/blog": "http://blog.golang.org",
"/build": "http://build.golang.org",
"/change": "https://code.google.com/p/go/source/list",
"/cl": "https://gocodereview.appspot.com/",
"/doc/go_for_cpp_programmers.html": "https://code.google.com/p/go-wiki/wiki/GoForCPPProgrammers",
"/doc/go_tutorial.html": "http://tour.golang.org/",
"/issue": "https://code.google.com/p/go/issues",
"/issue/new": "https://code.google.com/p/go/issues/entry",
"/issues": "https://code.google.com/p/go/issues",
"/play": "http://play.golang.org",
"/talks": "http://talks.golang.org",
"/tour": "http://tour.golang.org",
"/wiki": "https://code.google.com/p/go-wiki/w/list",
}
var prefixHelpers = map[string]string{
"blog": "http://blog.golang.org/",
"change": "https://code.google.com/p/go/source/detail?r=",
"cl": "https://codereview.appspot.com/",
"issue": "https://code.google.com/p/go/issues/detail?id=",
"play": "http://play.golang.org/",
"talks": "http://talks.golang.org/",
"wiki": "https://code.google.com/p/go-wiki/wiki/",
}
func handlePathRedirects(redirects map[string]string, prefix string) {
for source, target := range pkgRedirects {
h := makeRedirectHandler(prefix + target + "/")
@ -128,3 +164,22 @@ func makeRedirectHandler(target string) http.HandlerFunc {
http.Redirect(w, r, target, http.StatusMovedPermanently)
}
}
var validId = regexp.MustCompile(`^[a-z0-9]*$`)
func makePrefixRedirectHandler(prefix, baseURL string) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
if p := r.URL.Path; p == prefix {
// redirect /prefix/ to /prefix
http.Redirect(w, r, p[:len(p)-1], http.StatusFound)
return
}
id := r.URL.Path[len(prefix):]
if !validId.MatchString(id) {
http.Error(w, "Not found", http.StatusNotFound)
return
}
target := baseURL + id
http.Redirect(w, r, target, http.StatusFound)
}
}