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extract.go
80 lines (64 loc) · 1.11 KB
/
extract.go
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package main
import (
"archive/tar"
"compress/gzip"
"io"
"os"
"path/filepath"
"github.com/schollz/progressbar/v3"
)
func extract(src string) error {
goroot := filepath.Join(installPath, "go")
err := os.RemoveAll(goroot)
if err != nil {
return err
}
f, err := os.Open(src)
if err != nil {
return err
}
defer f.Close()
stat, err := f.Stat()
if err != nil {
return err
}
// add progress bar
bar := progressbar.DefaultBytes(
stat.Size(),
"extracting ",
)
r := io.TeeReader(f, bar)
plain, err := gzip.NewReader(r)
if err != nil {
return err
}
tr := tar.NewReader(plain)
for {
header, err := tr.Next()
if err == io.EOF {
break
}
if err != nil {
return err
}
if header.Typeflag != tar.TypeReg {
continue
}
path := filepath.Join(installPath, header.Name)
dir := filepath.Dir(path)
err = os.MkdirAll(dir, 0755)
if err != nil {
return err
}
out, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY, os.FileMode(header.Mode))
if err != nil {
return err
}
_, err = io.Copy(out, tr)
if err != nil {
return err
}
out.Close()
}
return nil
}