95 lines
1.7 KiB
Go
95 lines
1.7 KiB
Go
// +build ignore
|
|
|
|
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"compress/gzip"
|
|
"flag"
|
|
"fmt"
|
|
"html/template"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
)
|
|
|
|
// saves baseimage binaries statically into go code
|
|
func main() {
|
|
flag.Parse()
|
|
if len(flag.Args()) == 0 {
|
|
panic(fmt.Errorf("arch is required"))
|
|
}
|
|
|
|
for _, arch := range flag.Args() {
|
|
wd, err := os.Getwd()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
f, err := os.Open(filepath.Join(wd, arch))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer f.Close()
|
|
buf := &bytes.Buffer{}
|
|
|
|
gz, err := gzip.NewWriterLevel(newHexStringWriter(buf), gzip.BestCompression)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
if _, err = io.Copy(gz, f); err != nil {
|
|
panic(err)
|
|
}
|
|
if err := gz.Close(); err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
fn := filepath.Join(wd, arch+"_binary.go")
|
|
dest, err := os.OpenFile(fn, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
if err := tmpl.Execute(dest, struct{ Arch, Package, Data string }{Arch: arch, Package: "archutil", Data: buf.String()}); err != nil {
|
|
panic(err)
|
|
}
|
|
dest.Close()
|
|
}
|
|
|
|
}
|
|
|
|
type hexStringWriter struct {
|
|
w io.Writer
|
|
}
|
|
|
|
func newHexStringWriter(w io.Writer) io.Writer {
|
|
return &hexStringWriter{w: w}
|
|
}
|
|
|
|
func (w *hexStringWriter) Write(d []byte) (int, error) {
|
|
const hextable = "0123456789abcdef"
|
|
b := make([]byte, len(d)*4)
|
|
for i, v := range d {
|
|
b[i*4] = '\\'
|
|
b[i*4+1] = 'x'
|
|
b[i*4+2] = hextable[v>>4]
|
|
b[i*4+3] = hextable[v&0x0f]
|
|
}
|
|
for {
|
|
n, err := w.w.Write(b)
|
|
if err == io.ErrShortWrite {
|
|
b = b[n:]
|
|
continue
|
|
}
|
|
return len(d), err
|
|
}
|
|
}
|
|
|
|
var tmpl = template.Must(template.New("pause").Parse(`// +build !{{.Arch}}
|
|
|
|
package {{.Package}}
|
|
|
|
// This file is generated by running make inside the archutil package.
|
|
// Do not edit manually.
|
|
|
|
const Binary{{.Arch}} = "{{.Data}}"
|
|
`))
|