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Copy pathgenerate.go
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216 lines (173 loc) · 5.26 KB
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// Copyright 2017 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
// +build ignore
package main
import (
"crypto/sha256"
"encoding/base64"
"fmt"
"io/ioutil"
"os"
"path"
"path/filepath"
"strings"
"text/template"
"github.com/tdewolff/minify"
"github.com/tdewolff/minify/css"
"github.com/tdewolff/minify/js"
)
const tpl = `// Code generated by go generate; DO NOT EDIT.
package {{ .Package }}
var {{ .Map }} = map[string]string{
{{ range $constant, $content := .Files }}` + "\t" + `"{{ $constant }}": ` + "`{{ $content }}`" + `,
{{ end }}}
var {{ .Map }}Checksums = map[string]string{
{{ range $constant, $content := .Checksums }}` + "\t" + `"{{ $constant }}": "{{ $content }}",
{{ end }}}
`
var bundleTpl = template.Must(template.New("").Parse(tpl))
type Bundle struct {
Package, Map string
Files map[string]string
Checksums map[string]string
}
func (b *Bundle) Write(filename string) {
f, err := os.Create(filename)
if err != nil {
panic(err)
}
defer f.Close()
bundleTpl.Execute(f, b)
}
func NewBundle(pkg, mapName string) *Bundle {
return &Bundle{
Package: pkg,
Map: mapName,
Files: make(map[string]string),
Checksums: make(map[string]string),
}
}
func readFile(filename string) []byte {
data, err := ioutil.ReadFile(filename)
if err != nil {
panic(err)
}
return data
}
func checksum(data []byte) string {
return fmt.Sprintf("%x", sha256.Sum256(data))
}
func basename(filename string) string {
return path.Base(filename)
}
func stripExtension(filename string) string {
filename = strings.TrimSuffix(filename, filepath.Ext(filename))
return strings.Replace(filename, " ", "_", -1)
}
func glob(pattern string) []string {
files, _ := filepath.Glob(pattern)
return files
}
func concat(files []string) string {
var b strings.Builder
for _, file := range files {
b.Write(readFile(file))
}
return b.String()
}
func generateJSBundle(bundleFile string, bundleFiles map[string][]string, prefixes, suffixes map[string]string) {
bundle := NewBundle("static", "Javascripts")
m := minify.New()
m.AddFunc("text/javascript", js.Minify)
for name, srcFiles := range bundleFiles {
var b strings.Builder
if prefix, found := prefixes[name]; found {
b.WriteString(prefix)
}
b.WriteString(concat(srcFiles))
if suffix, found := suffixes[name]; found {
b.WriteString(suffix)
}
minifiedData, err := m.String("text/javascript", b.String())
if err != nil {
panic(err)
}
bundle.Files[name] = minifiedData
bundle.Checksums[name] = checksum([]byte(minifiedData))
}
bundle.Write(bundleFile)
}
func generateCSSBundle(bundleFile string, themes map[string][]string) {
bundle := NewBundle("static", "Stylesheets")
m := minify.New()
m.AddFunc("text/css", css.Minify)
for theme, srcFiles := range themes {
data := concat(srcFiles)
minifiedData, err := m.String("text/css", data)
if err != nil {
panic(err)
}
bundle.Files[theme] = minifiedData
bundle.Checksums[theme] = checksum([]byte(minifiedData))
}
bundle.Write(bundleFile)
}
func generateBinaryBundle(bundleFile string, srcFiles []string) {
bundle := NewBundle("static", "Binaries")
for _, srcFile := range srcFiles {
data := readFile(srcFile)
filename := basename(srcFile)
encodedData := base64.StdEncoding.EncodeToString(data)
bundle.Files[filename] = string(encodedData)
bundle.Checksums[filename] = checksum(data)
}
bundle.Write(bundleFile)
}
func generateBundle(bundleFile, pkg, mapName string, srcFiles []string) {
bundle := NewBundle(pkg, mapName)
for _, srcFile := range srcFiles {
data := readFile(srcFile)
filename := stripExtension(basename(srcFile))
bundle.Files[filename] = string(data)
bundle.Checksums[filename] = checksum(data)
}
bundle.Write(bundleFile)
}
func main() {
generateJSBundle("ui/static/js.go", map[string][]string{
"app": []string{
"ui/static/js/dom_helper.js",
"ui/static/js/touch_handler.js",
"ui/static/js/keyboard_handler.js",
"ui/static/js/mouse_handler.js",
"ui/static/js/form_handler.js",
"ui/static/js/request_builder.js",
"ui/static/js/unread_counter_handler.js",
"ui/static/js/entry_handler.js",
"ui/static/js/confirm_handler.js",
"ui/static/js/menu_handler.js",
"ui/static/js/modal_handler.js",
"ui/static/js/nav_handler.js",
"ui/static/js/bootstrap.js",
},
"sw": []string{
"ui/static/js/sw.js",
},
}, map[string]string{
"app": "(function(){'use strict';",
"sw": "'use strict';",
}, map[string]string{
"app": "})();",
})
generateCSSBundle("ui/static/css.go", map[string][]string{
"default": []string{"ui/static/css/common.css"},
"black": []string{"ui/static/css/common.css", "ui/static/css/black.css"},
"sansserif": []string{"ui/static/css/common.css", "ui/static/css/sansserif.css"},
})
generateBinaryBundle("ui/static/bin.go", glob("ui/static/bin/*"))
generateBundle("database/sql.go", "database", "SqlMap", glob("database/sql/*.sql"))
generateBundle("template/views.go", "template", "templateViewsMap", glob("template/html/*.html"))
generateBundle("template/common.go", "template", "templateCommonMap", glob("template/html/common/*.html"))
generateBundle("locale/translations.go", "locale", "translations", glob("locale/translations/*.json"))
}