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file_system_utils.go
70 lines (60 loc) · 1.33 KB
/
file_system_utils.go
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package filesystemutils
import (
"archive/tar"
"fmt"
"io"
"os"
"path/filepath"
)
var osUserHomDirFunc = os.UserHomeDir
var filePathJoinFunc = filepath.Join
// UserHomeDir Returns the users home directory or on error returns the current dir
func UserHomeDir() string {
if homeDir, err := osUserHomDirFunc(); err == nil {
return homeDir
}
return "."
}
// FilePathJoin Returns the file path obtained by joining various path elements.
func FilePathJoin(elems ...string) string {
return filePathJoinFunc(elems...)
}
func ExtractTar(ss io.Reader, destination string) error {
tarReader := tar.NewReader(ss)
for {
header, err := tarReader.Next()
if err == io.EOF {
break
}
if err != nil {
return err
}
switch header.Typeflag {
case tar.TypeDir:
if err := os.Mkdir(header.Name, 0755); err != nil {
return err
}
case tar.TypeReg:
fmt.Printf("Creating Flyte configuration file at: %s\n", destination)
outFile, err := os.Create(destination)
if err != nil {
return err
}
for {
// Read one 1MB at a time.
if _, err := io.CopyN(outFile, tarReader, 1024*1024); err != nil {
if err == io.EOF {
break
}
return err
}
}
outFile.Close()
default:
return fmt.Errorf("ExtractTarGz: unknown type: %v in %s",
header.Typeflag,
header.Name)
}
}
return nil
}