50 lines
867 B
Go
50 lines
867 B
Go
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package systar
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import (
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"io"
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"os/exec"
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"path/filepath"
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)
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func ExtractTar(body io.Reader, dest string) error {
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cmd := exec.Command("tar", "-xS", "-C", dest)
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cmd.Stdin = body
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return cmd.Run()
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}
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func TarDirectory(file string) (io.ReadCloser, error) {
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// use system builtin tar, golang one doesn't support sparse files
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dir := filepath.Dir(file)
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base := filepath.Base(file)
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i, o := io.Pipe()
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// don't bother with compression, it's mostly random data
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cmd := exec.Command("tar", "-cSf", "-", "-C", dir, base)
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cmd.Stdout = o
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if err := cmd.Start(); err != nil {
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return nil, err
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}
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return &struct {
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io.Reader
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io.Closer
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}{
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Reader: i,
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Closer: closer(func() error {
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e1 := i.Close()
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if err := cmd.Wait(); err != nil {
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return err
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}
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return e1
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}),
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}, nil
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}
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type closer func() error
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func (cl closer) Close() error {
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return cl()
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}
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