reorganize

scripts/bundle_assets.go

@@ -0,0 +1,96 @@
+package main
+
+import (
+	"bytes"
+	"compress/gzip"
+	"crypto/sha256"
+	"encoding/base64"
+	"fmt"
+	"io/ioutil"
+	"path/filepath"
+	"strings"
+	"text/template"
+	htemplate "html/template"
+)
+
+var code_template = `// +build release
+
+// autogenerated. do not edit!
+
+package server
+
+var assets_bundle = map[string]asset{
+	{{- range .}}
+	"{{.Name}}": {etag: "{{.Etag}}", body: "{{.Body}}"},
+	{{- end }}
+}
+
+func init() {
+	assets = assets_bundle
+}
+`
+
+type asset struct {
+	Name, Etag, Body string
+}
+
+func shasum(b []byte) string {
+	h := sha256.New()
+	h.Write(b)
+	return fmt.Sprintf("%x", h.Sum(nil))[:16]
+}
+
+func encode(b []byte) string {
+	var buf bytes.Buffer
+	zw := gzip.NewWriter(&buf)
+	zw.Write(b)
+	zw.Close()
+	return base64.StdEncoding.EncodeToString(buf.Bytes())
+}
+
+func main() {
+	assets := make([]asset, 0)
+	filepatterns := []string{
+		"assets/graphicarts/*.svg",
+		"assets/graphicarts/*.png",
+		"assets/javascripts/*.js",
+		"assets/stylesheets/*.css",
+		"assets/stylesheets/*.map",
+	}
+	fmt.Printf("%8s %8s %s\n", "original", "encoded", "filename")
+	for _, pattern := range filepatterns {
+		filenames, _ := filepath.Glob(pattern)
+		for _, filename := range filenames {
+			content, _ := ioutil.ReadFile(filename)
+			assets = append(assets, asset{
+				Name: strings.TrimPrefix(filename, "assets/"),
+				Etag: shasum(content),
+				Body: encode(content),
+			})
+			fmt.Printf(
+				"%8d %8d %s\n",
+				len(content),
+				len(assets[len(assets)-1].Body),
+				filename,
+			)
+		}
+	}
+	var indexbuf bytes.Buffer
+	htemplate.Must(htemplate.New("index.html").Delims("{%", "%}").Funcs(htemplate.FuncMap{
+		"inline": func(svg string) htemplate.HTML {
+			content, _ := ioutil.ReadFile("assets/graphicarts/" + svg)
+			return htemplate.HTML(content)
+		},
+	}).ParseFiles("assets/index.html")).Execute(&indexbuf, nil)
+	indexcontent := indexbuf.Bytes()
+	assets = append(assets, asset{
+		Name: "index.html",
+		Etag: shasum(indexcontent),
+		Body: encode(indexcontent),
+	})
+
+	var buf bytes.Buffer
+	template := template.Must(template.New("code").Parse(code_template))
+	template.Execute(&buf, assets)
+	ioutil.WriteFile("server/assets_bundle.go", buf.Bytes(), 0644)
+}