Today, I wanted to scrap information from a site, so this question came to my mind: How to evaluate the content of a js-mode Emacs buffer in the Nyxt current buffer? I came up with this set of functions. I created three functions in Emacs for js-mode buffers: Evaluate a region nyxt-javascript-send-region, evaluate an entire buffer nyxt-javascript-send-buffer and clearing the content of the console nyxt-javascript-clear-console.
Any feedback is appreciated.
;;; utilities-nyxt.el - Utilities for Nyxt-Emacs users
;;
;; The connection between Emacs and Nyxt is done through the
;; nyxt-javascript-send-string function. As for this version, this
;; package assumes that you have one only SLIME connection. The
;; default SLIME connection is choosen.
;;
;; If you have never connected Emacs to a SWANK server, the
;; following is the list of steps to do it:
;;
;; 1. Execute start-swank in Nyxt.
;;
;; 2. Execute slime-connect in Emacs.
;;
;; More information on Slime can be found in the master branch
;; repository: https://github.com/slime/slime
(require 'slime)
(defun nyxt-javascript-send-string (string)
(let ((sexp (concat "(ffi-buffer-evaluate-javascript-async (current-buffer) "
(prin1-to-string string)
")")))
(slime-interactive-eval sexp)))
(defun nyxt-javascript-send-region (start end)
"Evaluate the region in the Nyxt current-buffer."
(interactive
(list (region-beginning) (region-end)))
(let ((string (buffer-substring-no-properties
start
end)))
(nyxt-javascript-send-string string)))
(defun nyxt-javascript-send-buffer ()
"Evaluate the current buffer in the Nyxt current-buffer."
(interactive)
(let* ((string (save-restriction
(widen)
(buffer-substring-no-properties
(point-min)
(point-max)))))
(nyxt-javascript-send-string string)))
(defun nyxt-javascript-clear-console ()
"Clear console."
(interactive)
(nyxt-javascript-send-string "console.clear()"))
(define-key js-mode-map (kbd "C-c C-c") 'nyxt-javascript-send-buffer)
(define-key js-mode-map (kbd "C-c C-r") 'nyxt-javascript-send-region)
(define-key js-mode-map (kbd "C-c M-o") 'nyxt-javascript-clear-console)
