godoc: updates for latest Go app-engine release.

R=adg
CC=golang-dev
https://golang.org/cl/5273044

src/cmd/godoc/README.godoc-app

@@ -4,16 +4,14 @@ license that can be found in the LICENSE file.
 
 godoc on appengine
 ------------------
-(documentation in progress)
 
 Prerequisites
 -------------
 
-* Go appengine SDK 1.5.3 - 2011-08-17
+* Go appengine SDK 1.5.5 - 2011-10-11
   http://code.google.com/appengine/downloads.html#Google_App_Engine_SDK_for_Go
 
-* go_appengine_sdk_darwin_amd64-1.5.3.zip
-  Go sources at tip under $GOROOT
+* Go sources at tip under $GOROOT
 
 
 Directory structure
@@ -26,20 +24,9 @@ Directory structure
   app-engine release and version of godoc):
 
 	alt/
-		archive/
-		go/
-			ast/
-			doc/
-			parser/
-			...
-		http/
+		encoding/binary/
+		go/*
 		index/suffixarray/
-		mime/
-		path/filepath/
-		sort/
-		strings/
-		template/
-		url/
 	app.yaml
 	godoc.zip
 	godoc/
@@ -49,9 +36,9 @@ Directory structure
   For instance:
 
 	application: godoc-app
-	version: 1-5-4
+	version: 1-5-5
 	runtime: go
-	api_version: 2
+	api_version: 3
 
 	handlers:
 	- url: /.*
@@ -68,17 +55,26 @@ Directory structure
 
 * The alt/ directory contains up-to-date copies of Go packages that a tip-based
   godoc is dependent on but which do not yet exist in the current app-engine SDK.
+  At the time of this writing (10/14/2011) this is the entire go directory tree
+  (for the missing FileSet serialization code in go/token) as well as the
+  index/suffixarray package (for the missing suffix array serialization code).
+  The latest (alt/)index/suffixarray package internally requires the latest
+  version of encoding/binary, which is why it also needs to be present under
+  alt/.
 
 
-Configuring godoc
------------------
+Configuring and running godoc
+-----------------------------
 
-Run
+To configure godoc, run
 
 	bash setup-godoc-app.bash
 
 to create the godoc.zip, index.split.*, and godoc/appconfig.go files
 based on $GOROOT and $APPDIR. See the script for details on usage.
 
+To run godoc locally, using the app-engine emulator, run
 
+	<path to google_appengine>/dev_appserver.py $APPDIR
 
+godoc should come up at http://localhost:8080 .

src/cmd/godoc/appinit.go

@@ -2,43 +2,11 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// To run godoc under app engine, substitute main.go with
-// this file (appinit.go), provide a .zip file containing
-// the file system to serve, the index file (or files)
-// containing the pre-computed search index and adjust
-// the configuration parameters in appconfig.go accordingly.
-//
-// The current app engine SDK may be based on an older Go
-// release version. To correct for version skew, copy newer
-// packages into the alt directory (e.g. alt/strings) and
-// adjust the imports in the godoc source files (e.g. from
-// `import "strings"` to `import "alt/strings"`). Both old
-// and new packages may be used simultaneously as long as
-// there is no package global state that needs to be shared.
-//
-// The directory structure should look as follows:
-//
-// godoc-app			// directory containing the app engine app
-//      alt			// alternative packages directory to
-//				//	correct for version skew
-//		strings		// never version of the strings package
-//		...		//
-//	app.yaml		// app engine control file
-//	godoc.zip		// .zip file containing the file system to serve
-//	godoc			// contains godoc sources
-//		appinit.go	// this file instead of godoc/main.go
-//		appconfig.go	// godoc for app engine configuration
-//		...		//
-//	index.split.*		// index file(s) containing the search index to serve
-//
-// To run app the engine emulator locally:
-//
-//	dev_appserver.py -a 0 godoc-app
-//
-// The godoc home page is served at: <hostname>:8080 and localhost:8080.
-
 package main
 
+// This file replaces main.go when running godoc under app-engine.
+// See README.godoc-app for details.
+
 import (
 	"archive/zip"
 	"http"

src/cmd/godoc/setup-godoc-app.bash

@@ -72,7 +72,7 @@ cleanup() {
 
 makeZipfile() {
 	echo "*** make $APPDIR/$ZIPFILE"
-	zip -q -r $APPDIR/$ZIPFILE $GOROOT -i \*.go -i \*.html -i \*.css -i \*.js -i \*.txt -i \*.c -i \*.h -i \*.s -i \*.png -i \*.jpg -i \*.sh -i favicon.ico
+	zip -q -r $APPDIR/$ZIPFILE $GOROOT -i \*.go -i \*.html -i \*.css -i \*.js -i \*.txt -i \*.c -i \*.h -i \*.s -i \*.png -i \*.jpg -i \*.sh -i \*.ico
 }
 
 makeIndexfile() {