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| func Compress(paths []string, tarPath string) error {
file, err := os.Create(tarPath)
if err != nil {
return err
}
defer file.Close()
var fileReader io.WriteCloser = file
if strings.HasSuffix(tarPath, ".gz") {
fileReader = gzip.NewWriter(file)
defer func(fileReader io.WriteCloser) {
err := fileReader.Close()
if err != nil {
}
}(fileReader)
}
tw := tar.NewWriter(fileReader)
defer func(tw *tar.Writer) {
err := tw.Close()
if err != nil {
}
}(tw)
for _, i := range paths {
if err := tarWalk(i, tw); err != nil {
return err
}
}
return nil
}
func tarWalk(source string, tw *tar.Writer) error {
info, err := os.Stat(source)
if err != nil {
return nil
}
var baseDir string
if info.IsDir() {
baseDir = filepath.Base(source)
}
return filepath.Walk(source,
func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
header, err := tar.FileInfoHeader(info, info.Name())
if err != nil {
return err
}
if baseDir != "" {
header.Name = filepath.ToSlash(filepath.Join(baseDir, strings.TrimPrefix(path, source)))
}
if err := tw.WriteHeader(header); err != nil {
return err
}
if info.IsDir() {
return nil
}
if !info.Mode().IsRegular() {
return nil
}
file, err := os.Open(path)
if err != nil {
return err
}
defer file.Close()
_, err = io.Copy(tw, file)
return err
})
}
func UnCompress(extractPath, sourceFile string) error {
file, err := os.Open(sourceFile)
if err != nil {
return err
}
defer file.Close()
var fileReader io.ReadCloser = file
if strings.HasSuffix(sourceFile, ".gz") {
if fileReader, err = gzip.NewReader(file); err != nil {
return err
}
defer fileReader.Close()
}
tarBallReader := tar.NewReader(fileReader)
for {
header, err := tarBallReader.Next()
if err != nil {
if err == io.EOF {
break
}
return err
}
filename := filepath.Join(extractPath, filepath.FromSlash(header.Name))
switch header.Typeflag {
case tar.TypeDir:
err = os.MkdirAll(filename, os.FileMode(header.Mode))
if err != nil {
return err
}
case tar.TypeReg:
writer, err := os.Create(filename)
if err != nil {
return err
}
io.Copy(writer, tarBallReader)
err = os.Chmod(filename, os.FileMode(header.Mode))
if err != nil {
return err
}
writer.Close()
default:
log.Printf("Unable to untar type: %c in file %s", header.Typeflag, filename)
}
}
return nil
}
|
