cmd/godoc, godoc/static: remove remnants of golang.org website The canonical home for the golang.org website by now is the golang.org/x/website/cmd/golangorg command. That is the command that should be used to run the website locally instead of godoc. This change reduces the scope of x/tools/cmd/godoc to be a minimal Go Documentation Server. It removes the remaining pieces of the golang.org website and changes the title from "The Go Programming Language" to "Go Documentation Server". The web tree is modified as follows: • The index page has been modified to redirect to /pkg/, which serves a list of packages. • The /doc/ tree is removed. • The /robots.txt and /opensearch.xml pages are removed, since the primary use case for godoc now is a local web server. • The Google Analytics sections are removed from static templates, since it's always an empty value in local web server mode. Fixes golang/go#32011 Updates golang/go#29206 Change-Id: Id62c5f335fa2059774893ef4dcd268649278e99d Reviewed-on: https://go-review.googlesource.com/c/tools/+/207777 Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org> Run-TryBot: Andrew Bonventre <andybons@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Andrew Bonventre <andybons@golang.org>

commit: 688c506a55c1b3cd77849ad2e9879c7e87e0b715 [log] [tgz]
author: Dmitri Shuralyov <dmitshur@golang.org> Mon Nov 18 16:16:45 2019 -0500
committer: Dmitri Shuralyov <dmitshur@golang.org> Wed Nov 20 19:55:55 2019 +0000
tree: 737e459ba1b0d9cde8b6830884603cc2d82d6477
parent: cefbc64fbd4787e413d613910bab4406f4d58d0b [diff]
diff --git a/cmd/godoc/blog.go b/cmd/godoc/blog.go
deleted file mode 100644
index 42abeb6..0000000
--- a/cmd/godoc/blog.go
+++ /dev/null

@@ -1,85 +0,0 @@
-// 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.
-
-package main
-
-import (
-	"fmt"
-	"go/build"
-	"log"
-	"net/http"
-	"os"
-	"path/filepath"
-	"runtime"
-	"strings"
-	"sync"
-
-	"golang.org/x/tools/blog"
-	"golang.org/x/tools/godoc/redirect"
-)
-
-const (
-	blogRepo = "golang.org/x/blog"
-	blogURL  = "https://blog.golang.org/"
-	blogPath = "/blog/"
-)
-
-var (
-	blogServer   http.Handler // set by blogInit
-	blogInitOnce sync.Once
-	playEnabled  bool
-)
-
-func init() {
-	// Initialize blog only when first accessed.
-	http.HandleFunc(blogPath, func(w http.ResponseWriter, r *http.Request) {
-		blogInitOnce.Do(func() {
-			blogInit(r.Host)
-		})
-		blogServer.ServeHTTP(w, r)
-	})
-}
-
-func blogInit(host string) {
-	// Binary distributions included the blog content in "/blog".
-	// We stopped including this in Go 1.11.
-	root := filepath.Join(runtime.GOROOT(), "blog")
-
-	// Prefer content from the golang.org/x/blog repository if present.
-	if pkg, err := build.Import(blogRepo, "", build.FindOnly); err == nil {
-		root = pkg.Dir
-	}
-
-	// If content is not available fall back to redirect.
-	if fi, err := os.Stat(root); err != nil || !fi.IsDir() {
-		fmt.Fprintf(os.Stderr, "Blog content not available locally. "+
-			"To install, run \n\tgo get %v\n", blogRepo)
-		blogServer = http.HandlerFunc(blogRedirectHandler)
-		return
-	}
-
-	s, err := blog.NewServer(blog.Config{
-		BaseURL:         blogPath,
-		BasePath:        strings.TrimSuffix(blogPath, "/"),
-		ContentPath:     filepath.Join(root, "content"),
-		TemplatePath:    filepath.Join(root, "template"),
-		HomeArticles:    5,
-		PlayEnabled:     playEnabled,
-		ServeLocalLinks: strings.HasPrefix(host, "localhost"),
-	})
-	if err != nil {
-		log.Fatal(err)
-	}
-	blogServer = s
-}
-
-func blogRedirectHandler(w http.ResponseWriter, r *http.Request) {
-	if r.URL.Path == blogPath {
-		http.Redirect(w, r, blogURL, http.StatusFound)
-		return
-	}
-	blogPrefixHandler.ServeHTTP(w, r)
-}
-
-var blogPrefixHandler = redirect.PrefixHandler(blogPath, blogURL)

diff --git a/cmd/godoc/codewalk.go b/cmd/godoc/codewalk.go
deleted file mode 100644
index 2f1c3ca..0000000
--- a/cmd/godoc/codewalk.go
+++ /dev/null

@@ -1,522 +0,0 @@
-// 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.
-
-// The /doc/codewalk/ tree is synthesized from codewalk descriptions,
-// files named $GOROOT/doc/codewalk/*.xml.
-// For an example and a description of the format, see
-// http://golang.org/doc/codewalk/codewalk or run godoc -http=:6060
-// and see http://localhost:6060/doc/codewalk/codewalk .
-// That page is itself a codewalk; the source code for it is
-// $GOROOT/doc/codewalk/codewalk.xml.
-
-package main
-
-import (
-	"bytes"
-	"encoding/xml"
-	"errors"
-	"fmt"
-	"io"
-	"log"
-	"net/http"
-	"os"
-	pathpkg "path"
-	"regexp"
-	"sort"
-	"strconv"
-	"strings"
-	"text/template"
-	"unicode/utf8"
-
-	"golang.org/x/tools/godoc"
-	"golang.org/x/tools/godoc/vfs"
-)
-
-var codewalkHTML, codewalkdirHTML *template.Template
-
-// Handler for /doc/codewalk/ and below.
-func codewalk(w http.ResponseWriter, r *http.Request) {
-	relpath := r.URL.Path[len("/doc/codewalk/"):]
-	abspath := r.URL.Path
-
-	r.ParseForm()
-	if f := r.FormValue("fileprint"); f != "" {
-		codewalkFileprint(w, r, f)
-		return
-	}
-
-	// If directory exists, serve list of code walks.
-	dir, err := fs.Lstat(abspath)
-	if err == nil && dir.IsDir() {
-		codewalkDir(w, r, relpath, abspath)
-		return
-	}
-
-	// If file exists, serve using standard file server.
-	if err == nil {
-		pres.ServeFile(w, r)
-		return
-	}
-
-	// Otherwise append .xml and hope to find
-	// a codewalk description, but before trim
-	// the trailing /.
-	abspath = strings.TrimRight(abspath, "/")
-	cw, err := loadCodewalk(abspath + ".xml")
-	if err != nil {
-		log.Print(err)
-		pres.ServeError(w, r, relpath, err)
-		return
-	}
-
-	// Canonicalize the path and redirect if changed
-	if redir(w, r) {
-		return
-	}
-
-	pres.ServePage(w, godoc.Page{
-		Title:    "Codewalk: " + cw.Title,
-		Tabtitle: cw.Title,
-		Body:     applyTemplate(codewalkHTML, "codewalk", cw),
-	})
-}
-
-func redir(w http.ResponseWriter, r *http.Request) (redirected bool) {
-	canonical := pathpkg.Clean(r.URL.Path)
-	if !strings.HasSuffix(canonical, "/") {
-		canonical += "/"
-	}
-	if r.URL.Path != canonical {
-		url := *r.URL
-		url.Path = canonical
-		http.Redirect(w, r, url.String(), http.StatusMovedPermanently)
-		redirected = true
-	}
-	return
-}
-
-func applyTemplate(t *template.Template, name string, data interface{}) []byte {
-	var buf bytes.Buffer
-	if err := t.Execute(&buf, data); err != nil {
-		log.Printf("%s.Execute: %s", name, err)
-	}
-	return buf.Bytes()
-}
-
-// A Codewalk represents a single codewalk read from an XML file.
-type Codewalk struct {
-	Title string      `xml:"title,attr"`
-	File  []string    `xml:"file"`
-	Step  []*Codestep `xml:"step"`
-}
-
-// A Codestep is a single step in a codewalk.
-type Codestep struct {
-	// Filled in from XML
-	Src   string `xml:"src,attr"`
-	Title string `xml:"title,attr"`
-	XML   string `xml:",innerxml"`
-
-	// Derived from Src; not in XML.
-	Err    error
-	File   string
-	Lo     int
-	LoByte int
-	Hi     int
-	HiByte int
-	Data   []byte
-}
-
-// String method for printing in template.
-// Formats file address nicely.
-func (st *Codestep) String() string {
-	s := st.File
-	if st.Lo != 0 || st.Hi != 0 {
-		s += fmt.Sprintf(":%d", st.Lo)
-		if st.Lo != st.Hi {
-			s += fmt.Sprintf(",%d", st.Hi)
-		}
-	}
-	return s
-}
-
-// loadCodewalk reads a codewalk from the named XML file.
-func loadCodewalk(filename string) (*Codewalk, error) {
-	f, err := fs.Open(filename)
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-	cw := new(Codewalk)
-	d := xml.NewDecoder(f)
-	d.Entity = xml.HTMLEntity
-	err = d.Decode(cw)
-	if err != nil {
-		return nil, &os.PathError{Op: "parsing", Path: filename, Err: err}
-	}
-
-	// Compute file list, evaluate line numbers for addresses.
-	m := make(map[string]bool)
-	for _, st := range cw.Step {
-		i := strings.Index(st.Src, ":")
-		if i < 0 {
-			i = len(st.Src)
-		}
-		filename := st.Src[0:i]
-		data, err := vfs.ReadFile(fs, filename)
-		if err != nil {
-			st.Err = err
-			continue
-		}
-		if i < len(st.Src) {
-			lo, hi, err := addrToByteRange(st.Src[i+1:], 0, data)
-			if err != nil {
-				st.Err = err
-				continue
-			}
-			// Expand match to line boundaries.
-			for lo > 0 && data[lo-1] != '\n' {
-				lo--
-			}
-			for hi < len(data) && (hi == 0 || data[hi-1] != '\n') {
-				hi++
-			}
-			st.Lo = byteToLine(data, lo)
-			st.Hi = byteToLine(data, hi-1)
-		}
-		st.Data = data
-		st.File = filename
-		m[filename] = true
-	}
-
-	// Make list of files
-	cw.File = make([]string, len(m))
-	i := 0
-	for f := range m {
-		cw.File[i] = f
-		i++
-	}
-	sort.Strings(cw.File)
-
-	return cw, nil
-}
-
-// codewalkDir serves the codewalk directory listing.
-// It scans the directory for subdirectories or files named *.xml
-// and prepares a table.
-func codewalkDir(w http.ResponseWriter, r *http.Request, relpath, abspath string) {
-	type elem struct {
-		Name  string
-		Title string
-	}
-
-	dir, err := fs.ReadDir(abspath)
-	if err != nil {
-		log.Print(err)
-		pres.ServeError(w, r, relpath, err)
-		return
-	}
-	var v []interface{}
-	for _, fi := range dir {
-		name := fi.Name()
-		if fi.IsDir() {
-			v = append(v, &elem{name + "/", ""})
-		} else if strings.HasSuffix(name, ".xml") {
-			cw, err := loadCodewalk(abspath + "/" + name)
-			if err != nil {
-				continue
-			}
-			v = append(v, &elem{name[0 : len(name)-len(".xml")], cw.Title})
-		}
-	}
-
-	pres.ServePage(w, godoc.Page{
-		Title: "Codewalks",
-		Body:  applyTemplate(codewalkdirHTML, "codewalkdir", v),
-	})
-}
-
-// codewalkFileprint serves requests with ?fileprint=f&lo=lo&hi=hi.
-// The filename f has already been retrieved and is passed as an argument.
-// Lo and hi are the numbers of the first and last line to highlight
-// in the response.  This format is used for the middle window pane
-// of the codewalk pages.  It is a separate iframe and does not get
-// the usual godoc HTML wrapper.
-func codewalkFileprint(w http.ResponseWriter, r *http.Request, f string) {
-	abspath := f
-	data, err := vfs.ReadFile(fs, abspath)
-	if err != nil {
-		log.Print(err)
-		pres.ServeError(w, r, f, err)
-		return
-	}
-	lo, _ := strconv.Atoi(r.FormValue("lo"))
-	hi, _ := strconv.Atoi(r.FormValue("hi"))
-	if hi < lo {
-		hi = lo
-	}
-	lo = lineToByte(data, lo)
-	hi = lineToByte(data, hi+1)
-
-	// Put the mark 4 lines before lo, so that the iframe
-	// shows a few lines of context before the highlighted
-	// section.
-	n := 4
-	mark := lo
-	for ; mark > 0 && n > 0; mark-- {
-		if data[mark-1] == '\n' {
-			if n--; n == 0 {
-				break
-			}
-		}
-	}
-
-	io.WriteString(w, `<style type="text/css">@import "/doc/codewalk/codewalk.css";</style><pre>`)
-	template.HTMLEscape(w, data[0:mark])
-	io.WriteString(w, "<a name='mark'></a>")
-	template.HTMLEscape(w, data[mark:lo])
-	if lo < hi {
-		io.WriteString(w, "<div class='codewalkhighlight'>")
-		template.HTMLEscape(w, data[lo:hi])
-		io.WriteString(w, "</div>")
-	}
-	template.HTMLEscape(w, data[hi:])
-	io.WriteString(w, "</pre>")
-}
-
-// addrToByte evaluates the given address starting at offset start in data.
-// It returns the lo and hi byte offset of the matched region within data.
-// See http://9p.io/sys/doc/sam/sam.html Table II for details on the syntax.
-func addrToByteRange(addr string, start int, data []byte) (lo, hi int, err error) {
-	var (
-		dir        byte
-		prevc      byte
-		charOffset bool
-	)
-	lo = start
-	hi = start
-	for addr != "" && err == nil {
-		c := addr[0]
-		switch c {
-		default:
-			err = errors.New("invalid address syntax near " + string(c))
-		case ',':
-			if len(addr) == 1 {
-				hi = len(data)
-			} else {
-				_, hi, err = addrToByteRange(addr[1:], hi, data)
-			}
-			return
-
-		case '+', '-':
-			if prevc == '+' || prevc == '-' {
-				lo, hi, err = addrNumber(data, lo, hi, prevc, 1, charOffset)
-			}
-			dir = c
-
-		case '$':
-			lo = len(data)
-			hi = len(data)
-			if len(addr) > 1 {
-				dir = '+'
-			}
-
-		case '#':
-			charOffset = true
-
-		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
-			var i int
-			for i = 1; i < len(addr); i++ {
-				if addr[i] < '0' || addr[i] > '9' {
-					break
-				}
-			}
-			var n int
-			n, err = strconv.Atoi(addr[0:i])
-			if err != nil {
-				break
-			}
-			lo, hi, err = addrNumber(data, lo, hi, dir, n, charOffset)
-			dir = 0
-			charOffset = false
-			prevc = c
-			addr = addr[i:]
-			continue
-
-		case '/':
-			var i, j int
-		Regexp:
-			for i = 1; i < len(addr); i++ {
-				switch addr[i] {
-				case '\\':
-					i++
-				case '/':
-					j = i + 1
-					break Regexp
-				}
-			}
-			if j == 0 {
-				j = i
-			}
-			pattern := addr[1:i]
-			lo, hi, err = addrRegexp(data, lo, hi, dir, pattern)
-			prevc = c
-			addr = addr[j:]
-			continue
-		}
-		prevc = c
-		addr = addr[1:]
-	}
-
-	if err == nil && dir != 0 {
-		lo, hi, err = addrNumber(data, lo, hi, dir, 1, charOffset)
-	}
-	if err != nil {
-		return 0, 0, err
-	}
-	return lo, hi, nil
-}
-
-// addrNumber applies the given dir, n, and charOffset to the address lo, hi.
-// dir is '+' or '-', n is the count, and charOffset is true if the syntax
-// used was #n.  Applying +n (or +#n) means to advance n lines
-// (or characters) after hi.  Applying -n (or -#n) means to back up n lines
-// (or characters) before lo.
-// The return value is the new lo, hi.
-func addrNumber(data []byte, lo, hi int, dir byte, n int, charOffset bool) (int, int, error) {
-	switch dir {
-	case 0:
-		lo = 0
-		hi = 0
-		fallthrough
-
-	case '+':
-		if charOffset {
-			pos := hi
-			for ; n > 0 && pos < len(data); n-- {
-				_, size := utf8.DecodeRune(data[pos:])
-				pos += size
-			}
-			if n == 0 {
-				return pos, pos, nil
-			}
-			break
-		}
-		// find next beginning of line
-		if hi > 0 {
-			for hi < len(data) && data[hi-1] != '\n' {
-				hi++
-			}
-		}
-		lo = hi
-		if n == 0 {
-			return lo, hi, nil
-		}
-		for ; hi < len(data); hi++ {
-			if data[hi] != '\n' {
-				continue
-			}
-			switch n--; n {
-			case 1:
-				lo = hi + 1
-			case 0:
-				return lo, hi + 1, nil
-			}
-		}
-
-	case '-':
-		if charOffset {
-			// Scan backward for bytes that are not UTF-8 continuation bytes.
-			pos := lo
-			for ; pos > 0 && n > 0; pos-- {
-				if data[pos]&0xc0 != 0x80 {
-					n--
-				}
-			}
-			if n == 0 {
-				return pos, pos, nil
-			}
-			break
-		}
-		// find earlier beginning of line
-		for lo > 0 && data[lo-1] != '\n' {
-			lo--
-		}
-		hi = lo
-		if n == 0 {
-			return lo, hi, nil
-		}
-		for ; lo >= 0; lo-- {
-			if lo > 0 && data[lo-1] != '\n' {
-				continue
-			}
-			switch n--; n {
-			case 1:
-				hi = lo
-			case 0:
-				return lo, hi, nil
-			}
-		}
-	}
-
-	return 0, 0, errors.New("address out of range")
-}
-
-// addrRegexp searches for pattern in the given direction starting at lo, hi.
-// The direction dir is '+' (search forward from hi) or '-' (search backward from lo).
-// Backward searches are unimplemented.
-func addrRegexp(data []byte, lo, hi int, dir byte, pattern string) (int, int, error) {
-	re, err := regexp.Compile(pattern)
-	if err != nil {
-		return 0, 0, err
-	}
-	if dir == '-' {
-		// Could implement reverse search using binary search
-		// through file, but that seems like overkill.
-		return 0, 0, errors.New("reverse search not implemented")
-	}
-	m := re.FindIndex(data[hi:])
-	if len(m) > 0 {
-		m[0] += hi
-		m[1] += hi
-	} else if hi > 0 {
-		// No match.  Wrap to beginning of data.
-		m = re.FindIndex(data)
-	}
-	if len(m) == 0 {
-		return 0, 0, errors.New("no match for " + pattern)
-	}
-	return m[0], m[1], nil
-}
-
-// lineToByte returns the byte index of the first byte of line n.
-// Line numbers begin at 1.
-func lineToByte(data []byte, n int) int {
-	if n <= 1 {
-		return 0
-	}
-	n--
-	for i, c := range data {
-		if c == '\n' {
-			if n--; n == 0 {
-				return i + 1
-			}
-		}
-	}
-	return len(data)
-}
-
-// byteToLine returns the number of the line containing the byte at index i.
-func byteToLine(data []byte, i int) int {
-	l := 1
-	for j, c := range data {
-		if j == i {
-			return l
-		}
-		if c == '\n' {
-			l++
-		}
-	}
-	return l
-}

diff --git a/cmd/godoc/dl.go b/cmd/godoc/dl.go
deleted file mode 100644
index 962a0f0..0000000
--- a/cmd/godoc/dl.go
+++ /dev/null

@@ -1,14 +0,0 @@
-// Copyright 2014 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 "net/http"
-
-// Register a redirect handler for /dl/ to the golang.org download page.
-// This file will not be included when deploying godoc to golang.org.
-
-func init() {
-	http.Handle("/dl/", http.RedirectHandler("https://golang.org/dl/", http.StatusFound))
-}

diff --git a/cmd/godoc/godoc_test.go b/cmd/godoc/godoc_test.go
index 3748388..7e44348 100644
--- a/cmd/godoc/godoc_test.go
+++ b/cmd/godoc/godoc_test.go

@@ -81,7 +81,7 @@
 	go func() { ch <- fmt.Errorf("server exited early: %v", cmd.Wait()) }()
 	go waitForServer(t, ch,
 		fmt.Sprintf("http://%v/", addr),
-		"The Go Programming Language",
+		"Go Documentation Server",
 		15*time.Second,
 		false)
 	if err := <-ch; err != nil {
@@ -201,7 +201,7 @@
 		}
 	}
 
-	t.Run("index", testcase("/", "Go is an open source programming language"))
+	t.Run("index", testcase("/", "These packages are part of the Go Project but outside the main Go tree."))
 	t.Run("fmt", testcase("/pkg/fmt", "Package fmt implements formatted I/O"))
 }
 
@@ -286,8 +286,12 @@
 		releaseTag  string // optional release tag that must be in go/build.ReleaseTags
 	}{
 		{
-			path:     "/",
-			contains: []string{"Go is an open source programming language"},
+			path: "/",
+			contains: []string{
+				"Go Documentation Server",
+				"Standard library",
+				"These packages are part of the Go Project but outside the main Go tree.",
+			},
 		},
 		{
 			path:     "/pkg/fmt/",

diff --git a/cmd/godoc/handlers.go b/cmd/godoc/handlers.go
index 2e98501..a59301b 100644
--- a/cmd/godoc/handlers.go
+++ b/cmd/godoc/handlers.go

@@ -2,14 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// The /doc/codewalk/ tree is synthesized from codewalk descriptions,
-// files named $GOROOT/doc/codewalk/*.xml.
-// For an example and a description of the format, see
-// http://golang.org/doc/codewalk/codewalk or run godoc -http=:6060
-// and see http://localhost:6060/doc/codewalk/codewalk .
-// That page is itself a codewalk; the source code for it is
-// $GOROOT/doc/codewalk/codewalk.xml.
-
 package main
 
 import (
@@ -17,79 +9,39 @@
 	"go/format"
 	"log"
 	"net/http"
-	"strings"
 	"text/template"
 
 	"golang.org/x/tools/godoc"
-	"golang.org/x/tools/godoc/golangorgenv"
 	"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{}
 )
 
-// hostEnforcerHandler redirects requests to "http://foo.golang.org/bar"
-// to "https://golang.org/bar".
-// It permits requests to the host "godoc-test.golang.org" for testing and
-// golang.google.cn for Chinese users.
-type hostEnforcerHandler struct {
-	h http.Handler
-}
-
-func (h hostEnforcerHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	if !golangorgenv.EnforceHosts() {
-		h.h.ServeHTTP(w, r)
-		return
-	}
-	if !h.isHTTPS(r) || !h.validHost(r.Host) {
-		r.URL.Scheme = "https"
-		if h.validHost(r.Host) {
-			r.URL.Host = r.Host
-		} else {
-			r.URL.Host = "golang.org"
-		}
-		http.Redirect(w, r, r.URL.String(), http.StatusFound)
-		return
-	}
-	w.Header().Set("Strict-Transport-Security", "max-age=31536000; includeSubDomains; preload")
-	h.h.ServeHTTP(w, r)
-}
-
-func (h hostEnforcerHandler) isHTTPS(r *http.Request) bool {
-	return r.TLS != nil || r.Header.Get("X-Forwarded-Proto") == "https"
-}
-
-func (h hostEnforcerHandler) validHost(host string) bool {
-	switch strings.ToLower(host) {
-	case "golang.org", "golang.google.cn":
-		return true
-	}
-	if strings.HasSuffix(host, "-dot-golang-org.appspot.com") {
-		// staging/test
-		return true
-	}
-	return false
-}
-
-func registerHandlers(pres *godoc.Presentation) *http.ServeMux {
+func registerHandlers(pres *godoc.Presentation) {
 	if pres == nil {
 		panic("nil Presentation")
 	}
 	mux := http.NewServeMux()
-	mux.HandleFunc("/doc/codewalk/", codewalk)
-	mux.Handle("/doc/play/", pres.FileServer())
-	mux.Handle("/robots.txt", pres.FileServer())
-	mux.Handle("/", pres)
+	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("/", hostEnforcerHandler{mux})
-
-	return mux
+	http.Handle("/", mux)
 }
 
 func readTemplate(name string) *template.Template {
@@ -113,8 +65,6 @@
 }
 
 func readTemplates(p *godoc.Presentation) {
-	codewalkHTML = readTemplate("codewalk.html")
-	codewalkdirHTML = readTemplate("codewalkdir.html")
 	p.CallGraphHTML = readTemplate("callgraph.html")
 	p.DirlistHTML = readTemplate("dirlist.html")
 	p.ErrorHTML = readTemplate("error.html")
@@ -128,7 +78,6 @@
 	p.SearchDocHTML = readTemplate("searchdoc.html")
 	p.SearchCodeHTML = readTemplate("searchcode.html")
 	p.SearchTxtHTML = readTemplate("searchtxt.html")
-	p.SearchDescXML = readTemplate("opensearch.xml")
 }
 
 type fmtResponse struct {

diff --git a/cmd/godoc/index.go b/cmd/godoc/index.go
deleted file mode 100644
index f84b29a..0000000
--- a/cmd/godoc/index.go
+++ /dev/null

@@ -1,11 +0,0 @@
-// Copyright 2015 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 "strings"
-
-func indexDirectoryDefault(dir string) bool {
-	return dir != "/pkg" && !strings.HasPrefix(dir, "/pkg/")
-}

diff --git a/cmd/godoc/main.go b/cmd/godoc/main.go
index 1d402ba..dc8a081 100644
--- a/cmd/godoc/main.go
+++ b/cmd/godoc/main.go

@@ -6,8 +6,7 @@
 
 // Web server tree:
 //
-//	http://godoc/		main landing page
-//	http://godoc/doc/	serve from $GOROOT/doc - spec, mem, etc.
+//	http://godoc/		redirect to /pkg/
 //	http://godoc/src/	serve files from $GOROOT/src; .go gets pretty-printed
 //	http://godoc/cmd/	serve documentation about commands
 //	http://godoc/pkg/	serve documentation about packages
@@ -164,8 +163,6 @@
 		certInit()
 	}
 
-	playEnabled = *showPlayground
-
 	// Check usage.
 	if flag.NArg() > 0 {
 		fmt.Fprintln(os.Stderr, `Unexpected arguments. Use "go doc" for command-line help output instead. For example, "go doc fmt.Printf".`)
@@ -276,7 +273,9 @@
 		corpus.IndexFullText = false
 	}
 	corpus.IndexFiles = *indexFiles
-	corpus.IndexDirectory = indexDirectoryDefault
+	corpus.IndexDirectory = func(dir string) bool {
+		return dir != "/pkg" && !strings.HasPrefix(dir, "/pkg/")
+	}
 	corpus.IndexThrottle = *indexThrottle
 	corpus.IndexInterval = *indexInterval
 	if *writeIndex || *urlFlag != "" {

diff --git a/cmd/godoc/play.go b/cmd/godoc/play.go
deleted file mode 100644
index a899353..0000000
--- a/cmd/godoc/play.go
+++ /dev/null

@@ -1,9 +0,0 @@
-// Copyright 2012 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
-
-// This package registers "/compile" and "/share" handlers
-// that redirect to the golang.org playground.
-import _ "golang.org/x/tools/playground"

diff --git a/godoc/pres.go b/godoc/pres.go
index 7cedcb5..1daa5a1 100644
--- a/godoc/pres.go
+++ b/godoc/pres.go

@@ -38,7 +38,7 @@
 	SearchDocHTML,
 	SearchCodeHTML,
 	SearchTxtHTML,
-	SearchDescXML *template.Template
+	SearchDescXML *template.Template // If not nil, register a /opensearch.xml handler with this template.
 
 	// TabWidth optionally specifies the tab width.
 	TabWidth int
@@ -129,7 +129,9 @@
 	p.pkgHandler.registerWithMux(p.mux)
 	p.mux.HandleFunc("/", p.ServeFile)
 	p.mux.HandleFunc("/search", p.HandleSearch)
-	p.mux.HandleFunc("/opensearch.xml", p.serveSearchDesc)
+	if p.SearchDescXML != nil {
+		p.mux.HandleFunc("/opensearch.xml", p.serveSearchDesc)
+	}
 	return p
 }
 

diff --git a/godoc/static/codewalk.html b/godoc/static/codewalk.html
deleted file mode 100644
index 0f3d22a..0000000
--- a/godoc/static/codewalk.html
+++ /dev/null

@@ -1,56 +0,0 @@
-<!--
-	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.
--->
-
-<style type='text/css'>@import "/doc/codewalk/codewalk.css";</style>
-<script type="text/javascript" src="/doc/codewalk/codewalk.js"></script>
-
-<div id="codewalk-main">
-  <div class="left" id="code-column">
-    <div id='sizer'></div>
-    <div id="code-area">
-      <div id="code-header" align="center">
-        <a id="code-popout-link" href="" target="_blank">
-          <img title="View code in new window" alt="Pop Out Code" src="/doc/codewalk/popout.png" style="display: block; float: right;"/>
-        </a>
-        <select id="code-selector">
-          {{range .File}}
-          <option value="/doc/codewalk/?fileprint=/{{urlquery .}}">{{html .}}</option>
-          {{end}}
-        </select>
-      </div>
-      <div id="code">
-        <iframe class="code-display" name="code-display" id="code-display"></iframe>
-      </div>
-    </div>
-    <div id="code-options" class="setting">
-      <span>code on <a id="set-code-left" class="selected" href="#">left</a> &bull; <a id="set-code-right" href="#">right</a></span>
-      <span>code width <span id="code-column-width">70%</span></span>
-      <span>filepaths <a id="show-filepaths" class="selected" href="#">shown</a> &bull; <a id="hide-filepaths" href="#">hidden</a></span>
-    </div>
-  </div>
-  <div class="right" id="comment-column">
-    <div id="comment-area">
-      {{range .Step}}
-      <div class="comment first last">
-        <a class="comment-link" href="/doc/codewalk/?fileprint=/{{urlquery .File}}&amp;lo={{urlquery .Lo}}&amp;hi={{urlquery .Hi}}#mark" target="code-display"></a>
-        <div class="comment-title">{{html .Title}}</div>
-        <div class="comment-text">
-	{{with .Err}}
-	ERROR LOADING FILE: {{html .}}<br/><br/>
-	{{end}}
-        {{.XML}}
-        </div>
-        <div class="comment-text file-name"><span class="path-file">{{html .}}</span></div>
-      </div>
-      {{end}}
-    </div>
-    <div id="comment-options" class="setting">
-      <a id="prev-comment" href="#"><span class="hotkey">p</span>revious step</a>
-      &bull;
-      <a id="next-comment" href="#"><span class="hotkey">n</span>ext step</a>
-    </div>
-  </div>
-</div>

diff --git a/godoc/static/codewalkdir.html b/godoc/static/codewalkdir.html
deleted file mode 100644
index b7674c6..0000000
--- a/godoc/static/codewalkdir.html
+++ /dev/null

@@ -1,16 +0,0 @@
-<!--
-	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.
--->
-
-<table class="layout">
-{{range .}}
-<tr>
-	{{$name_html := html .Name}}
-	<td><a href="{{$name_html}}">{{$name_html}}</a></td>
-	<td width="25">&nbsp;</td>
-	<td>{{html .Title}}</td>
-</tr>
-{{end}}
-</table>

diff --git a/godoc/static/gen.go b/godoc/static/gen.go
index 76f7d34..c1c308d 100644
--- a/godoc/static/gen.go
+++ b/godoc/static/gen.go

@@ -33,8 +33,6 @@
 	"analysis/typeinfo-pkg.png",
 	"analysis/typeinfo-src.png",
 	"callgraph.html",
-	"codewalk.html",
-	"codewalkdir.html",
 	"dirlist.html",
 	"error.html",
 	"example.html",
@@ -54,7 +52,6 @@
 	"jquery.treeview.edit.js",
 	"jquery.treeview.js",
 	"methodset.html",
-	"opensearch.xml",
 	"package.html",
 	"packageroot.html",
 	"play.js",

diff --git a/godoc/static/godoc.html b/godoc/static/godoc.html
index 89e089b..86cacb7 100644
--- a/godoc/static/godoc.html
+++ b/godoc/static/godoc.html

@@ -5,31 +5,15 @@
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <meta name="theme-color" content="#375EAB">
 {{with .Tabtitle}}
-  <title>{{html .}} - The Go Programming Language</title>
+  <title>{{html .}} - Go Documentation Server</title>
 {{else}}
-  <title>The Go Programming Language</title>
+  <title>Go Documentation Server</title>
 {{end}}
 <link type="text/css" rel="stylesheet" href="/lib/godoc/style.css">
-{{if .SearchBox}}
-<link rel="search" type="application/opensearchdescription+xml" title="godoc" href="/opensearch.xml" />
-{{end}}
 {{if .TreeView}}
 <link rel="stylesheet" href="/lib/godoc/jquery.treeview.css">
 {{end}}
 <script>window.initFuncs = [];</script>
-{{with .GoogleAnalytics}}
-<script type="text/javascript">
-var _gaq = _gaq || [];
-_gaq.push(["_setAccount", "{{.}}"]);
-window.trackPageview = function() {
-  _gaq.push(["_trackPageview", location.pathname+location.hash]);
-};
-window.trackPageview();
-window.trackEvent = function(category, action, opt_label, opt_value, opt_noninteraction) {
-  _gaq.push(["_trackEvent", category, action, opt_label, opt_value, opt_noninteraction]);
-};
-</script>
-{{end}}
 <script src="/lib/godoc/jquery.js" defer></script>
 {{if .TreeView}}
 <script src="/lib/godoc/jquery.treeview.js" defer></script>
@@ -49,18 +33,11 @@
 </div><!-- #lowframe -->
 
 <div id="topbar"{{if .Title}} class="wide"{{end}}><div class="container">
-<div class="top-heading" id="heading-wide"><a href="/">The Go Programming Language</a></div>
-<div class="top-heading" id="heading-narrow"><a href="/">Go</a></div>
+<div class="top-heading" id="heading-wide"><a href="/pkg/">Go Documentation Server</a></div>
+<div class="top-heading" id="heading-narrow"><a href="/pkg/">GoDoc</a></div>
 <a href="#" id="menu-button"><span id="menu-button-arrow">&#9661;</span></a>
 <form method="GET" action="/search">
 <div id="menu">
-<a href="/doc/">Documents</a>
-<a href="/pkg/">Packages</a>
-<a href="/project/">The Project</a>
-<a href="/help/">Help</a>
-{{if not .GoogleCN}}
-<a href="/blog/">Blog</a>
-{{end}}
 {{if (and .Playground .Title)}}
 <a id="playgroundButton" href="http://play.golang.org/" title="Show Go Playground">Play</a>
 {{end}}
@@ -129,15 +106,5 @@
 
 </div><!-- .container -->
 </div><!-- #page -->
-{{if .GoogleAnalytics}}
-<script type="text/javascript">
-(function() {
-  var ga = document.createElement("script"); ga.type = "text/javascript"; ga.async = true;
-  ga.src = ("https:" == document.location.protocol ? "https://ssl" : "http://www") + ".google-analytics.com/ga.js";
-  var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(ga, s);
-})();
-</script>
-{{end}}
 </body>
 </html>
-

diff --git a/godoc/static/opensearch.xml b/godoc/static/opensearch.xml
deleted file mode 100644
index 1b652db..0000000
--- a/godoc/static/opensearch.xml
+++ /dev/null

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
-  <ShortName>godoc</ShortName>
-  <Description>The Go Programming Language</Description>
-  <Tags>go golang</Tags>
-  <Contact />
-  <Url type="text/html" template="{{.BaseURL}}/search?q={searchTerms}" />
-  <Image height="15" width="16" type="image/x-icon">/favicon.ico</Image>
-  <OutputEncoding>UTF-8</OutputEncoding>
-  <InputEncoding>UTF-8</InputEncoding>
-</OpenSearchDescription>

diff --git a/godoc/static/static.go b/godoc/static/static.go
index 46c1d23..5950f2d 100644
--- a/godoc/static/static.go
+++ b/godoc/static/static.go

@@ -41,17 +41,13 @@
 
 	"callgraph.html": "<div\x20class=\"toggle\"\x20style=\"display:\x20none\">\x0a\x09<div\x20class=\"collapsed\">\x0a\x09\x09<p\x20class=\"exampleHeading\x20toggleButton\">\xe2\x96\xb9\x20<span\x20class=\"text\">Internal\x20call\x20graph</span></p>\x0a\x09</div>\x0a\x09<div\x20class=\"expanded\">\x0a\x09\x09<p\x20class=\"exampleHeading\x20toggleButton\">\xe2\x96\xbe\x20<span\x20class=\"text\">Internal\x20call\x20graph</span></p>\x0a\x09\x09<p>\x0a\x09\x09\x20\x20This\x20viewer\x20shows\x20the\x20portion\x20of\x20the\x20internal\x20call\x0a\x09\x09\x20\x20graph\x20of\x20this\x20package\x20that\x20is\x20reachable\x20from\x20this\x20function.\x0a\x09\x09\x20\x20See\x20the\x20<a\x20href='#pkg-callgraph'>package's\x20call\x0a\x09\x09\x20\x20graph</a>\x20for\x20more\x20information.\x0a\x09\x09</p>\x0a\x09\x09<ul\x20style=\"margin-left:\x200.5in\"\x20id=\"callgraph-{{.Index}}\"\x20class=\"treeview\"></ul>\x0a\x09</div>\x0a</div>\x0a",
 
-	"codewalk.html": "<!--\x0a\x09Copyright\x202010\x20The\x20Go\x20Authors.\x20All\x20rights\x20reserved.\x0a\x09Use\x20of\x20this\x20source\x20code\x20is\x20governed\x20by\x20a\x20BSD-style\x0a\x09license\x20that\x20can\x20be\x20found\x20in\x20the\x20LICENSE\x20file.\x0a-->\x0a\x0a<style\x20type='text/css'>@import\x20\"/doc/codewalk/codewalk.css\";</style>\x0a<script\x20type=\"text/javascript\"\x20src=\"/doc/codewalk/codewalk.js\"></script>\x0a\x0a<div\x20id=\"codewalk-main\">\x0a\x20\x20<div\x20class=\"left\"\x20id=\"code-column\">\x0a\x20\x20\x20\x20<div\x20id='sizer'></div>\x0a\x20\x20\x20\x20<div\x20id=\"code-area\">\x0a\x20\x20\x20\x20\x20\x20<div\x20id=\"code-header\"\x20align=\"center\">\x0a\x20\x20\x20\x20\x20\x20\x20\x20<a\x20id=\"code-popout-link\"\x20href=\"\"\x20target=\"_blank\">\x0a\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20<img\x20title=\"View\x20code\x20in\x20new\x20window\"\x20alt=\"Pop\x20Out\x20Code\"\x20src=\"/doc/codewalk/popout.png\"\x20style=\"display:\x20block;\x20float:\x20right;\"/>\x0a\x20\x20\x20\x20\x20\x20\x20\x20</a>\x0a\x20\x20\x20\x20\x20\x20\x20\x20<select\x20id=\"code-selector\">\x0a\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20{{range\x20.File}}\x0a\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20<option\x20value=\"/doc/codewalk/?fileprint=/{{urlquery\x20.}}\">{{html\x20.}}</option>\x0a\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20{{end}}\x0a\x20\x20\x20\x20\x20\x20\x20\x20</select>\x0a\x20\x20\x20\x20\x20\x20</div>\x0a\x20\x20\x20\x20\x20\x20<div\x20id=\"code\">\x0a\x20\x20\x20\x20\x20\x20\x20\x20<iframe\x20class=\"code-display\"\x20name=\"code-display\"\x20id=\"code-display\"></iframe>\x0a\x20\x20\x20\x20\x20\x20</div>\x0a\x20\x20\x20\x20</div>\x0a\x20\x20\x20\x20<div\x20id=\"code-options\"\x20class=\"setting\">\x0a\x20\x20\x20\x20\x20\x20<span>code\x20on\x20<a\x20id=\"set-code-left\"\x20class=\"selected\"\x20href=\"#\">left</a>\x20&bull;\x20<a\x20id=\"set-code-right\"\x20href=\"#\">right</a></span>\x0a\x20\x20\x20\x20\x20\x20<span>code\x20width\x20<span\x20id=\"code-column-width\">70%</span></span>\x0a\x20\x20\x20\x20\x20\x20<span>filepaths\x20<a\x20id=\"show-filepaths\"\x20class=\"selected\"\x20href=\"#\">shown</a>\x20&bull;\x20<a\x20id=\"hide-filepaths\"\x20href=\"#\">hidden</a></span>\x0a\x20\x20\x20\x20</div>\x0a\x20\x20</div>\x0a\x20\x20<div\x20class=\"right\"\x20id=\"comment-column\">\x0a\x20\x20\x20\x20<div\x20id=\"comment-area\">\x0a\x20\x20\x20\x20\x20\x20{{range\x20.Step}}\x0a\x20\x20\x20\x20\x20\x20<div\x20class=\"comment\x20first\x20last\">\x0a\x20\x20\x20\x20\x20\x20\x20\x20<a\x20class=\"comment-link\"\x20href=\"/doc/codewalk/?fileprint=/{{urlquery\x20.File}}&amp;lo={{urlquery\x20.Lo}}&amp;hi={{urlquery\x20.Hi}}#mark\"\x20target=\"code-display\"></a>\x0a\x20\x20\x20\x20\x20\x20\x20\x20<div\x20class=\"comment-title\">{{html\x20.Title}}</div>\x0a\x20\x20\x20\x20\x20\x20\x20\x20<div\x20class=\"comment-text\">\x0a\x09{{with\x20.Err}}\x0a\x09ERROR\x20LOADING\x20FILE:\x20{{html\x20.}}<br/><br/>\x0a\x09{{end}}\x0a\x20\x20\x20\x20\x20\x20\x20\x20{{.XML}}\x0a\x20\x20\x20\x20\x20\x20\x20\x20</div>\x0a\x20\x20\x20\x20\x20\x20\x20\x20<div\x20class=\"comment-text\x20file-name\"><span\x20class=\"path-file\">{{html\x20.}}</span></div>\x0a\x20\x20\x20\x20\x20\x20</div>\x0a\x20\x20\x20\x20\x20\x20{{end}}\x0a\x20\x20\x20\x20</div>\x0a\x20\x20\x20\x20<div\x20id=\"comment-options\"\x20class=\"setting\">\x0a\x20\x20\x20\x20\x20\x20<a\x20id=\"prev-comment\"\x20href=\"#\"><span\x20class=\"hotkey\">p</span>revious\x20step</a>\x0a\x20\x20\x20\x20\x20\x20&bull;\x0a\x20\x20\x20\x20\x20\x20<a\x20id=\"next-comment\"\x20href=\"#\"><span\x20class=\"hotkey\">n</span>ext\x20step</a>\x0a\x20\x20\x20\x20</div>\x0a\x20\x20</div>\x0a</div>\x0a",
-
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commit	688c506a55c1b3cd77849ad2e9879c7e87e0b715	[log] [tgz]
author	Dmitri Shuralyov <dmitshur@golang.org>	Mon Nov 18 16:16:45 2019 -0500
committer	Dmitri Shuralyov <dmitshur@golang.org>	Wed Nov 20 19:55:55 2019 +0000
tree	737e459ba1b0d9cde8b6830884603cc2d82d6477
parent	cefbc64fbd4787e413d613910bab4406f4d58d0b [diff]