uri

type Folder struct {
	Files []Uri
}

type Handler func(root Uri, u Uri) error

type OpenError struct {
	Uri     string
	Message string
}

type ParseError struct {
	Uri     string
	Message string
}

type Permission interface {
}

type ProtocolError struct {
	Protocol string
	Message  string
}

type Uri interface {
	Scheme() string
	Host() string
	Path() string
	Uri() string
	Abs() string
	Parent() (Uri, error)

	Create(bool, os.FileMode) error
	OpenRead() (io.ReadCloser, error)
	OpenWrite() (io.WriteCloser, error)
	Remove() error
	Walk(dh, fh Handler) error //dh is the handler to handle a directory,and fh is the handler to handle a file.

	IsDir() bool
	Exist() bool
	IsAbs() bool

	Mode() os.FileMode
	ModTime() time.Time
	// contains filtered or unexported methods
}

type UriFtp struct {
	// contains filtered or unexported fields
}

type UriLocal struct {
	// contains filtered or unexported fields
}