Vim-style keybinding in Emacs/Evil-mode.

vim-style-key-binding.el

(defun kbd+ (keyrep &optional need-vector)
  (if (vectorp keyrep) keyrep (edmacro-parse-keys keyrep need-vector)))

(defun gmap (keyrep defstr)
  "Vim-style global keybinding. Uses the `global-set-key' binding function."
  (global-set-key (kbd+ keyrep) (edmacro-parse-keys defstr t)))

(defun fmap (keybind-fn keyrep defstr)
  "Vim-style keybinding using the key binding function KEYBIND-FN."
  (call keybind-fn (kbd+ keyrep) (edmacro-parse-keys defstr t)))

(defun xmap (keymap keyrep defstr)
  "Vim-style keybinding in KEYMAP. Uses the `define-key' binding function."
  (define-key keymap (kbd+ keyrep) (edmacro-parse-keys defstr t)))

(defun nmap (keyrep defstr) "Vim-style keybinding for `evil-normal-state'. Uses the `define-key' binding function."
      (xmap evil-normal-state-map keyrep defstr))
(defun imap (keyrep defstr) "Vim-style keybinding for `evil-insert-state'. Uses the `define-key' binding function."
      (xmap evil-insert-state-map keyrep defstr))
(defun vmap (keyrep defstr) "Vim-style keybinding for `evil-visual-state'. Uses the `define-key' binding function."
      (xmap evil-visual-state-map keyrep defstr))
(defun mmap (keyrep defstr) "Vim-style keybinding for `evil-motion-state'. Uses the `define-key' binding function."
      (xmap evil-motion-state-map keyrep defstr))