func unpackCompressedReader(targetDir string, tarFile io.Reader) error {
tarFile, err := gzip.NewReader(tarFile)
if err != nil {
return errors.Annotate(err, "while uncompressing archive file")
}
err = tar.UntarFiles(tarFile, targetDir)
return errors.Trace(err)
}
// UnpackFilesBundle unpacks the archived files bundle into the targeted dir.
func (ws *ArchiveWorkspace) UnpackFilesBundle(targetRoot string) error {
tarFile, err := os.Open(ws.FilesBundle)
if err != nil {
return errors.Trace(err)
}
defer tarFile.Close()
err = tar.UntarFiles(tarFile, targetRoot)
return errors.Trace(err)
}
// Extract unpacks a tar or zip archive to outputDir (defaults to working directory).
// Supported extension: tar, zip
// Defaults:
// - outputDir os.Getwd()
// TODO:
// - ignore file extensions, try to parse headers
func Extract(filename, outputDir string) error {
if _, err := os.Stat(filename); err != nil {
return fmt.Errorf("couldn't access file %s: %+v", filename, err)
}
if outputDir == "" {
outputDir, _ = os.Getwd()
}
if strings.HasSuffix(filename, ".tar") {
r, err := os.Open(filename)
if err != nil {
return fmt.Errorf("couldn't open file %s: %+v", filename, err)
}
return tar.UntarFiles(r, outputDir)
}
if strings.HasSuffix(filename, ".zip") {
r, err := zip.OpenReader(filename)
if err != nil {
return fmt.Errorf("couldn't open archive %s: %+v", filename, err)
}
return jzip.ExtractAll(&r.Reader, outputDir)
}
return fmt.Errorf("only supporting tar and zip files at the moment")
}