filesystem

type ClosableRWFile interface {
	Close() error
	Write(p []byte) (n int, err error)
	Read(p []byte) (n int, err error)
}

type FileSystem struct{}

type Filesystem interface {
	Stat(name string) (os.FileInfo, error)
	MkdirAll(path string, perm os.FileMode) error
	Create(name string) (ClosableRWFile, error)
	Open(path string) (ClosableRWFile, error)
	OpenFile(path string, flag int, perm os.FileMode) (ClosableRWFile, error)
	ReadAll(r io.Reader) ([]byte, error)
	WriteFile(name string, data []byte, perm os.FileMode) error
	Remove(name string) error
	RemoveAll(path string) error
	ReadDir(name string) ([]os.DirEntry, error)
	Copy(dst io.Writer, src io.Reader) (written int64, err error)
	WalkDir(root string, fn fs.WalkDirFunc) error
}