forked from IBM-Cloud/ibm-cloud-cli-sdk
/
gzip.go
69 lines (57 loc) · 1021 Bytes
/
gzip.go
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package file_helpers
import (
"archive/tar"
"compress/gzip"
"io"
"os"
"path/filepath"
)
func ExtractTgz(src string, dest string) error {
fd, err := os.Open(src)
if err != nil {
return err
}
defer fd.Close()
gReader, err := gzip.NewReader(fd)
if err != nil {
return err
}
defer gReader.Close()
tarReader := tar.NewReader(gReader)
for {
hdr, err := tarReader.Next()
if err == io.EOF {
break
}
if err != nil {
return err
}
if hdr.Name == "." {
continue
}
err = extractFileInArchive(tarReader, hdr, dest)
if err != nil {
return err
}
}
return nil
}
func extractFileInArchive(r io.Reader, hdr *tar.Header, dest string) error {
fi := hdr.FileInfo()
path := filepath.Join(dest, hdr.Name)
if fi.IsDir() {
return os.MkdirAll(path, fi.Mode())
} else {
err := os.MkdirAll(filepath.Dir(path), 0755)
if err != nil {
return err
}
f, err := os.Create(path)
if err != nil {
return err
}
defer f.Close()
_, err = io.Copy(f, r)
return err
}
}