How to paste into emacs --no-window-system without auto-indent?

If I paste a piece of code from the browser to emacs -nw with middle mouse button, or Ctrl+Shift+v (in gnome-terminal paste from clipboard), it's incorrectly indented.

Original code:

for (i=0; i<=10; i++) {
    j = j + i;
    print j;
}

Becomes:

for (i=0; i<=10; i++) {
          j = j + i;
                print j;
                    }

In vim one would turn off auto-indent. In emacs I tried 2 ways that doesn't work:

Method 1:

Configure ctrl+y to use PRIMARY selection in ~/.emacs

(setq x-select-enable-primary t)

And try to paste with Ctrl-y instead of middle-mouse-key or Ctrl+Shift+V. Result: ctrl-y only pastes from emacs' kill ring, not from external selection.

Method 2: Unmap RET from newline-and-indent:

(add-hook 'lisp-mode-hook '(lambda ()
  (local-set-key (kbd "RET") 'newline)))

It works for typing RET (no indent), but for middle-mouse-key or Ctrl+Shift+V auto-indent is applied anyway.