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;;; lui-autopaste.el --- Extension for lui for long text input
;; Copyright (C) 2012 Jorgen Schaefer <forcer@forcix.cx>
;; Author: Jorgen Schaefer <forcer@forcix.cx>
;; This file is part of Lui.
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License
;; as published by the Free Software Foundation; either version 3
;; of the License, or (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This extension for lui will intercept long input and replace it by
;; an URL to a paste service.
;; What is considered "long" is defined by `lui-autopaste-lines'. You
;; can configure which paste service to use by changing
;; `lui-autopaste-function'.
;; Run `enable-lui-autopaste' to enable this.
;;; Code:
(defgroup lui-autopaste nil
"The Lui autopaste extension."
:prefix "lui-autopaste-"
:group 'lui)
(defcustom lui-autopaste-lines 3
"Starting at this number of lines, Lui will ask to paste the input."
:type 'integer
:group 'lui-autopaste)
(defcustom lui-autopaste-function 'lui-autopaste-service-ixio
"Which paste service to use.
This function will be called with some text as its only argument,
and is expected to return an URL to view the contents."
:type '(choice (const :tag "ix.io" lui-autopaste-service-ixio)
(const :tag "ptpb.pw" lui-autopaste-service-ptpb-pw))
:group 'lui-autopaste)
;;;###autoload
(defun enable-lui-autopaste ()
"Enable the lui autopaste feature.
If you enter more than `lui-autopaste-lines' at once, Lui will
ask if you would prefer to use a paste service instead. If you
agree, Lui will paste your input to `lui-autopaste-function' and
replace it with the resulting URL."
(interactive)
(add-hook 'lui-pre-input-hook 'lui-autopaste))
;;;###autoload
(defun disable-lui-autopaste ()
"Disable the lui autopaste feature."
(interactive)
(remove-hook 'lui-pre-input-hook 'lui-autopaste))
(defun lui-autopaste ()
"Check if the lui input is too large. If so, paste it instead."
(when (and (>= (count-lines (point-min) (point-max))
lui-autopaste-lines)
(y-or-n-p "That's pretty long, would you like to use a paste service instead? "))
(let ((url (funcall lui-autopaste-function
(buffer-substring (point-min)
(point-max)))))
(delete-region (point-min) (point-max))
(insert url))))
(defun lui-autopaste-service-ptpb-pw (text)
"Paste TEXT to ptpb.pw and return the paste url."
(let ((url-request-method "POST")
(url-request-extra-headers
'(("Content-Type" . "application/x-www-form-urlencoded")))
(url-request-data (format "c=%s" (url-hexify-string text)))
(url-http-attempt-keepalives nil))
(let ((buf (url-retrieve-synchronously "https://ptpb.pw/")))
(unwind-protect
(with-current-buffer buf
(goto-char (point-min))
(if (re-search-forward "^url: \\(.*\\)" nil t)
(match-string 1)
(error "Error during pasting to ptpb.pw")))
(kill-buffer buf)))))
(defun lui-autopaste-service-ixio (text)
"Paste TEXT to ix.io and return the paste url."
(let ((url-request-method "POST")
(url-request-extra-headers
'(("Content-Type" . "application/x-www-form-urlencoded")))
(url-request-data (format "f:1=%s" (url-hexify-string text)))
(url-http-attempt-keepalives nil))
(let ((buf (url-retrieve-synchronously "http://ix.io/")))
(unwind-protect
(with-current-buffer buf
(goto-char (point-min))
(if (re-search-forward "\n\n" nil t)
(buffer-substring (point) (point-at-eol))
(error "Error during pasting to ix.io")))
(kill-buffer buf)))))
(provide 'lui-autopaste)
;;; lui-autopaste.el ends here
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