1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
// 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, srcFiles []string) {
var b strings.Builder
b.WriteString("(function() {'use strict';")
b.WriteString(concat(srcFiles))
b.WriteString("})();")
m := minify.New()
m.AddFunc("text/javascript", js.Minify)
output, err := m.String("text/javascript", b.String())
if err != nil {
panic(err)
}
bundle := NewBundle("static", "Javascript")
bundle.Files["app"] = output
bundle.Checksums["app"] = checksum([]byte(output))
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", []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",
})
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("sql/sql.go", "sql", "SqlMap", glob("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"))
}
|
