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// 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 http://mozilla.org/MPL/2.0/.
// +build ignore
package main
import (
"bytes"
"compress/gzip"
"encoding/base64"
"flag"
"go/format"
"io"
"os"
"path/filepath"
"strings"
"text/template"
)
var tpl = template.Must(template.New("assets").Parse(`package auto
import (
"encoding/base64"
)
func Assets() map[string][]byte {
var assets = make(map[string][]byte, {{.Assets | len}})
{{range $asset := .Assets}}
assets["{{$asset.Name}}"], _ = base64.StdEncoding.DecodeString("{{$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: base64.StdEncoding.EncodeToString(buf.Bytes()),
})
}
return nil
}
}
type templateVars struct {
Assets []asset
}
func main() {
flag.Parse()
filepath.Walk(flag.Arg(0), walkerFor(flag.Arg(0)))
var buf bytes.Buffer
tpl.Execute(&buf, templateVars{
Assets: assets,
})
bs, err := format.Source(buf.Bytes())
if err != nil {
panic(err)
}
os.Stdout.Write(bs)
}
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