ambevar-dotfiles/.emacs.d/plugins/xclip.el

113 lines
4.1 KiB
EmacsLisp

;;; xclip.el --- Emacs Interface to XClip
;; Copyright (C) 2007 Leo Shidai Liu
;; Author: Leo Shidai Liu <shidai.liu@gmail.com>
;; Keywords: convenience, tools
;; Created: 2007-12-30
;; $Id: xclip.el,v 0.9 2008/02/10 11:12:56 leo Exp $
;; This file 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, or (at your option)
;; any later version.
;; This file 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 GNU Emacs; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; This code provides an Emacs interface to the tool with the same
;; name on http://people.debian.org/~kims/xclip/.
;;; Code:
(defvar xclip-program (executable-find "xclip")
"Name of XClip program tool.")
(defvar xclip-select-enable-clipboard t
"Non-nil means cutting and pasting uses the clipboard.
This is in addition to, but in preference to, the primary selection.")
(defvar xclip-last-selected-text-clipboard nil
"The value of the CLIPBOARD X selection from xclip.")
(defvar xclip-last-selected-text-primary nil
"The value of the PRIMARY X selection from xclip.")
(defun xclip-set-selection (type data)
"TYPE is a symbol: primary, secondary and clipboard.
See `x-set-selection'."
(when (and xclip-program (getenv "DISPLAY"))
(let* ((process-connection-type nil)
(proc (start-process "xclip" nil "xclip"
"-selection" (symbol-name type))))
(process-send-string proc data)
(process-send-eof proc))))
(defun xclip-select-text (text &optional push)
"See `x-select-text'."
(xclip-set-selection 'primary text)
(setq xclip-last-selected-text-primary text)
(when xclip-select-enable-clipboard
(xclip-set-selection 'clipboard text)
(setq xclip-last-selected-text-clipboard text)))
(defun xclip-selection-value ()
"See `x-cut-buffer-or-selection-value'."
(when (and xclip-program (getenv "DISPLAY"))
(let (clip-text primary-text)
(when xclip-select-enable-clipboard
(setq clip-text (shell-command-to-string "xclip -o -selection clipboard"))
(setq clip-text
(cond ;; check clipboard selection
((or (not clip-text) (string= clip-text ""))
(setq xclip-last-selected-text-primary nil))
((eq clip-text xclip-last-selected-text-clipboard) nil)
((string= clip-text xclip-last-selected-text-clipboard)
;; Record the newer string,
;; so subsequent calls can use the `eq' test.
(setq xclip-last-selected-text-clipboard clip-text)
nil)
(t (setq xclip-last-selected-text-clipboard clip-text)))))
(setq primary-text (shell-command-to-string "xclip -o"))
(setq primary-text
(cond ;; check primary selection
((or (not primary-text) (string= primary-text ""))
(setq xclip-last-selected-text-primary nil))
((eq primary-text xclip-last-selected-text-primary) nil)
((string= primary-text xclip-last-selected-text-primary)
;; Record the newer string,
;; so subsequent calls can use the `eq' test.
(setq xclip-last-selected-text-primary primary-text)
nil)
(t (setq xclip-last-selected-text-primary primary-text))))
(or clip-text primary-text))))
;;;###autoload
(defun turn-on-xclip ()
(interactive)
(setq interprogram-cut-function 'xclip-select-text)
(setq interprogram-paste-function 'xclip-selection-value))
;;;###autoload
(defun turn-off-xclip ()
(interactive)
(setq interprogram-cut-function nil)
(setq interprogram-paste-function nil))
(add-hook 'terminal-init-xterm-hook 'turn-on-xclip)
(provide 'xclip)
;;; xclip.el ends here