793b86e604
It compiles literally 50 times faster and generates the same code. Also add the little header that indicates auto generated code.
111 lines
2.0 KiB
Go
111 lines
2.0 KiB
Go
// Copyright (C) 2014 The Syncthing Authors.
|
|
//
|
|
// This Source Code Form is subject to the terms of the Mozilla Public
|
|
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
// You can obtain one at https://mozilla.org/MPL/2.0/.
|
|
|
|
// +build ignore
|
|
|
|
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"compress/gzip"
|
|
"flag"
|
|
"fmt"
|
|
"go/format"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
"strconv"
|
|
"strings"
|
|
"text/template"
|
|
"time"
|
|
)
|
|
|
|
var tpl = template.Must(template.New("assets").Parse(`// Code generated by genassets.go - DO NOT EDIT.
|
|
|
|
package auto
|
|
|
|
const Generated int64 = {{.Generated}}
|
|
|
|
func Assets() map[string][]byte {
|
|
var assets = make(map[string][]byte, {{.Assets | len}})
|
|
{{range $asset := .Assets}}
|
|
assets["{{$asset.Name}}"] = {{$asset.Data}}{{end}}
|
|
return assets
|
|
}
|
|
|
|
`))
|
|
|
|
type asset struct {
|
|
Name string
|
|
Data string
|
|
}
|
|
|
|
var assets []asset
|
|
|
|
func walkerFor(basePath string) filepath.WalkFunc {
|
|
return func(name string, info os.FileInfo, err error) error {
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if strings.HasPrefix(filepath.Base(name), ".") {
|
|
// Skip dotfiles
|
|
return nil
|
|
}
|
|
|
|
if info.Mode().IsRegular() {
|
|
fd, err := os.Open(name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
var buf bytes.Buffer
|
|
gw := gzip.NewWriter(&buf)
|
|
io.Copy(gw, fd)
|
|
fd.Close()
|
|
gw.Flush()
|
|
gw.Close()
|
|
|
|
name, _ = filepath.Rel(basePath, name)
|
|
assets = append(assets, asset{
|
|
Name: filepath.ToSlash(name),
|
|
Data: fmt.Sprintf("[]byte(%q)", buf.String()),
|
|
})
|
|
}
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
type templateVars struct {
|
|
Assets []asset
|
|
Generated int64
|
|
}
|
|
|
|
func main() {
|
|
flag.Parse()
|
|
|
|
filepath.Walk(flag.Arg(0), walkerFor(flag.Arg(0)))
|
|
var buf bytes.Buffer
|
|
|
|
// Generated time is now, except if the SOURCE_DATE_EPOCH environment
|
|
// variable is set (for reproducible builds).
|
|
generated := time.Now().Unix()
|
|
if s, _ := strconv.ParseInt(os.Getenv("SOURCE_DATE_EPOCH"), 10, 64); s > 0 {
|
|
generated = s
|
|
}
|
|
|
|
tpl.Execute(&buf, templateVars{
|
|
Assets: assets,
|
|
Generated: generated,
|
|
})
|
|
bs, err := format.Source(buf.Bytes())
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
os.Stdout.Write(bs)
|
|
}
|