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package storage
import (	"io"	"net/url"	"os"	"path"	"path/filepath")
type localFSDriver struct{}
func (driver *localFSDriver) Open(root string, options url.Values) (FileSystem, error) {	root = filepath.Clean(root)	err := ensureDir(root)	if err != nil {		return nil, err	}	return &localFSLayer{root}, nil}
type localFSLayer struct {	root string}
func (fs *localFSLayer) Stat(name string) (FileStat, error) {	fullPath := path.Join(fs.root, name)	fi, err := os.Lstat(fullPath)	if err != nil {		if os.IsNotExist(err) {			return nil, ErrNotFound		}		return nil, err	}	return fi, nil}
func (fs *localFSLayer) OpenFile(name string) (file io.ReadSeekCloser, err error) {	fullPath := path.Join(fs.root, name)	file, err = os.Open(fullPath)	if err != nil && os.IsNotExist(err) {		err = ErrNotFound	}	return}
func (fs *localFSLayer) WriteFile(name string, content io.Reader) (written int64, err error) {	fullPath := path.Join(fs.root, name)	err = ensureDir(path.Dir(fullPath))	if err != nil {		return	}
	file, err := os.Create(fullPath)	if err != nil {		return	}	defer file.Close()
	written, err = io.Copy(file, content)	return}
func ensureDir(dir string) (err error) {	_, err = os.Lstat(dir)	if err != nil && os.IsNotExist(err) {		err = os.MkdirAll(dir, 0755)	}	return}
func init() {	RegisterFileSystem("local", &localFSDriver{})}