emacs/code/elpa/rust-mode-20220217.2009/rust-playpen.el

60 lines
2.3 KiB
EmacsLisp

;;; rust-playpen.el --- Support for the Rust Playground -*- lexical-binding:t -*-
;;; Commentary:
;; This library implements support for the Rust Playground,
;; which is hosted at https://play.rust-lang.org and developed
;; at https://github.com/integer32llc/rust-playground.
;;; Code:
(eval-when-compile (require 'url))
;;; Options
(defcustom rust-playpen-url-format "https://play.rust-lang.org/?code=%s"
"Format string to use when submitting code to the playpen."
:type 'string
:group 'rust-mode)
(defcustom rust-shortener-url-format "https://is.gd/create.php?format=simple&url=%s"
"Format string to use for creating the shortened link of a playpen submission."
:type 'string
:group 'rust-mode)
;;; Commands
(defun rust-playpen-region (begin end)
"Create a shareable URL for the region from BEGIN to END on the Rust playpen."
(interactive "r")
(let* ((data (buffer-substring begin end))
(escaped-data (url-hexify-string data))
(escaped-playpen-url (url-hexify-string
(format rust-playpen-url-format escaped-data))))
(if (> (length escaped-playpen-url) 5000)
(error "encoded playpen data exceeds 5000 character limit (length %s)"
(length escaped-playpen-url))
(let ((shortener-url (format rust-shortener-url-format escaped-playpen-url))
(url-request-method "POST"))
(url-retrieve shortener-url
(lambda (state)
;; filter out the headers etc. included at the
;; start of the buffer: the relevant text
;; (shortened url or error message) is exactly
;; the last line.
(goto-char (point-max))
(let ((last-line (thing-at-point 'line t))
(err (plist-get state :error)))
(kill-buffer)
(if err
(error "failed to shorten playpen url: %s" last-line)
(message "%s" last-line)))))))))
(defun rust-playpen-buffer ()
"Create a shareable URL for the contents of the buffer on the Rust playpen."
(interactive)
(rust-playpen-region (point-min) (point-max)))
;;; _
(provide 'rust-playpen)
;;; rust-playpen.el ends here