Function WriteFile

utils/merkletrie/filesystem/node_test.go:229–243

(fs billy.Filesystem, filename string, data []byte, perm os.FileMode)

}

func WriteFile(fs billy.Filesystem, filename string, data []byte, perm os.FileMode) error {
	f, err := fs.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, perm)
	if err != nil {
		return err
	}

	n, err := f.Write(data)
	if err == nil && n < len(data) {
		err = io.ErrShortWrite
	}
	if err1 := f.Close(); err == nil {
		err = err1
	}
	return err
}

var empty = make([]byte, 24)