use appengine go111 runtime now

.gcloudignore

@@ -0,0 +1,25 @@
+# This file specifies files that are *not* uploaded to Google Cloud Platform
+# using gcloud. It follows the same syntax as .gitignore, with the addition of
+# "#!include" directives (which insert the entries of the given .gitignore-style
+# file at that point).
+#
+# For more information, run:
+#   $ gcloud topic gcloudignore
+#
+.gcloudignore
+# If you would like to upload your .git directory, .gitignore file or files
+# from your .gitignore file, remove the corresponding line
+# below:
+.git
+.gitignore
+
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+# Test binary, build with `go test -c`
+*.test
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out

app.yaml

@@ -1,5 +1,4 @@
-runtime: go
-api_version: go1
+runtime: go111
 
 handlers:
 - url: /static
@@ -11,6 +10,6 @@ handlers:
   secure: always
   redirect_http_response_code: 301
 - url: /.*
-  script: _go_app
+  script: auto
   secure: always
   redirect_http_response_code: 301

go101.go

@@ -143,7 +143,7 @@ func (go101 *Go101) RenderArticlePage(w http.ResponseWriter, r *http.Request, fi
 			var buf bytes.Buffer
 			if err = t.Execute(&buf, pageParams); err == nil {
 				page = buf.Bytes()
-			} else  {
+			} else {
 				page = []byte(err.Error())
 			}
 		} else if os.IsNotExist(err) {
@@ -223,13 +223,13 @@ func (go101 *Go101) RenderPrintPage(w http.ResponseWriter, r *http.Request, item
 		case "book101":
 			pageParams, err = buildBook101PrintParams()
 		}
-		
+
 		if err == nil {
 			if pageParams == nil {
 				pageParams = map[string]interface{}{}
 			}
 			pageParams["IsLocalServer"] = isLocal
-			
+
 			t := retrievePageTemplate(Template_PrintBook, !isLocal)
 			var buf bytes.Buffer
 			if err = t.Execute(&buf, pageParams); err == nil {
@@ -238,7 +238,7 @@ func (go101 *Go101) RenderPrintPage(w http.ResponseWriter, r *http.Request, item
 		}
 
 		if err != nil {
-				page = []byte(err.Error())
+			page = []byte(err.Error())
 		}
 
 		if !isLocal {
@@ -261,16 +261,16 @@ func (go101 *Go101) RenderPrintPage(w http.ResponseWriter, r *http.Request, item
 	}
 	w.Write(page)
 }
-	
+
 func buildBook101PrintParams() (map[string]interface{}, error) {
 	article, err := retrieveArticleContent("101.html")
 	if err != nil {
 		return nil, err
 	}
 
 	// get all index article content by removing some lines
-	var builder strings.Builder
-	
+	var builder bytes.Buffer // strings.Builder // GAE go111 has problems
+
 	content := string(article.Content)
 	i := strings.Index(content, IndexContentStart)
 	if i < 0 {
@@ -283,7 +283,7 @@ func buildBook101PrintParams() (map[string]interface{}, error) {
 	if i >= 0 {
 		content = content[:i]
 	}
-	
+
 	for range [1000]struct{}{} {
 		i = strings.Index(content, LineToRemoveTag)
 		if i < 0 {
@@ -301,36 +301,36 @@ func buildBook101PrintParams() (map[string]interface{}, error) {
 		content = content[end:]
 	}
 	builder.WriteString(content)
-	
+
 	// the index article
 	articles := make([]Article, 0, 100)
 	article.FilenameWithoutExt = "101"
 	article.Content = template.HTML(builder.String())
 	articles = append(articles, article)
-	
+
 	// find all articles from links
 	content = string(article.Content)
 	for range [1000]struct{}{} {
 		i = strings.Index(content, Anchor)
 		if i < 0 {
 			break
 		}
-		content = content[i + len(Anchor):]
+		content = content[i+len(Anchor):]
 		i = strings.Index(content, _Anchor)
 		if i < 0 {
 			break
 		}
-		
+
 		article, err := retrieveArticleContent(content[:i])
 		if err != nil {
 			log.Printf("retrieve article %s error: %s", content[:i], err)
 		} else {
 			articles = append(articles, article)
 		}
-		
-		content = content[i + len(_Anchor):]
+
+		content = content[i+len(_Anchor):]
 	}
-	
+
 	return map[string]interface{}{"Articles": articles}, nil
 }
 

main.go

@@ -1,5 +1,3 @@
-// +build !appengine
-
 package main
 
 import (
@@ -8,30 +6,36 @@ import (
 	"log"
 	"net"
 	"net/http"
+	"os"
 	"time"
 )
 
-var port = flag.Int("port", 55555, "server port")
+var portFlag = flag.String("port", "55555", "server port")
 
 func main() {
 	log.SetFlags(0)
 	flag.Parse()
 
-	l, err := net.Listen("tcp", fmt.Sprintf(":%v", *port))
+	port := *portFlag
+	if prt := os.Getenv("PORT"); prt != "" { // appengine std
+		port = prt
+	}
+
+	l, err := net.Listen("tcp", fmt.Sprintf(":%v", port))
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	err = openBrowser(fmt.Sprintf("http://localhost:%v", *port))
+	err = openBrowser(fmt.Sprintf("http://localhost:%v", port))
 	if err != nil {
 		log.Fatal(err)
 	}
 
 	go go101.Update()
 
 	log.Println("Server started:")
-	log.Printf("   http://localhost:%v (non-cached version)\n", *port)
-	log.Printf("   http://127.0.0.1:%v (cached version)\n", *port)
+	log.Printf("   http://localhost:%v (non-cached version)\n", port)
+	log.Printf("   http://127.0.0.1:%v (cached version)\n", port)
 	(&http.Server{
 		Handler:      go101,
 		WriteTimeout: 10 * time.Second,

templates/print

@@ -94,7 +94,7 @@
 			});
 
 			$("pre.line-numbers").addClass("prettyprint linenums")
-			$("pre.no-line-numbers").addClass("prettyprint")
+			$("pre.disable-line-numbers111").addClass("prettyprint")
 			PR.prettyPrint();
 		}
 		</script>