94 lines
1.7 KiB
Go
94 lines
1.7 KiB
Go
package tarutil
|
|
|
|
import (
|
|
"archive/tar"
|
|
"io"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
|
|
"golang.org/x/xerrors"
|
|
|
|
logging "github.com/ipfs/go-log/v2"
|
|
)
|
|
|
|
var log = logging.Logger("tarutil") // nolint
|
|
|
|
func ExtractTar(body io.Reader, dir string) error {
|
|
if err := os.MkdirAll(dir, 0755); err != nil { // nolint
|
|
return xerrors.Errorf("mkdir: %w", err)
|
|
}
|
|
|
|
tr := tar.NewReader(body)
|
|
for {
|
|
header, err := tr.Next()
|
|
switch err {
|
|
default:
|
|
return err
|
|
case io.EOF:
|
|
return nil
|
|
|
|
case nil:
|
|
}
|
|
|
|
f, err := os.Create(filepath.Join(dir, header.Name))
|
|
if err != nil {
|
|
return xerrors.Errorf("creating file %s: %w", filepath.Join(dir, header.Name), err)
|
|
}
|
|
|
|
if _, err := io.Copy(f, tr); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := f.Close(); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
func TarDirectory(dir string) (io.ReadCloser, error) {
|
|
r, w := io.Pipe()
|
|
|
|
go func() {
|
|
_ = w.CloseWithError(writeTarDirectory(dir, w))
|
|
}()
|
|
|
|
return r, nil
|
|
}
|
|
|
|
func writeTarDirectory(dir string, w io.Writer) error {
|
|
tw := tar.NewWriter(w)
|
|
|
|
files, err := ioutil.ReadDir(dir)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, file := range files {
|
|
h, err := tar.FileInfoHeader(file, "")
|
|
if err != nil {
|
|
return xerrors.Errorf("getting header for file %s: %w", file.Name(), err)
|
|
}
|
|
|
|
if err := tw.WriteHeader(h); err != nil {
|
|
return xerrors.Errorf("wiritng header for file %s: %w", file.Name(), err)
|
|
}
|
|
|
|
f, err := os.OpenFile(filepath.Join(dir, file.Name()), os.O_RDONLY, 644) // nolint
|
|
if err != nil {
|
|
return xerrors.Errorf("opening %s for reading: %w", file.Name(), err)
|
|
}
|
|
|
|
if _, err := io.Copy(tw, f); err != nil {
|
|
return xerrors.Errorf("copy data for file %s: %w", file.Name(), err)
|
|
}
|
|
|
|
if err := f.Close(); err != nil {
|
|
return err
|
|
}
|
|
|
|
}
|
|
|
|
return nil
|
|
}
|