1 ;;; epa-hook.el --- preloaded code to enable epa-file.el
2 ;; Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
4 ;; Author: Daiki Ueno <ueno@unixuser.org>
5 ;; Keywords: PGP, GnuPG
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software: you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation, either version 3 of the License, or
12 ;; (at your option) any later version.
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
24 (defgroup epa-file nil
25 "The EasyPG Assistant hooks for transparent file encryption"
29 (defun epa-file--file-name-regexp-set (variable value)
30 (set-default variable value)
31 (if (fboundp 'epa-file-name-regexp-update)
32 (epa-file-name-regexp-update)))
34 (defcustom epa-file-name-regexp (purecopy "\\.gpg\\(~\\|\\.~[0-9]+~\\)?\\'")
35 "Regexp which matches filenames to be encrypted with GnuPG.
37 If you set this outside Custom while epa-file is already enabled, you
38 have to call `epa-file-name-regexp-update' after setting it to
39 properly update file-name-handler-alist. Setting this through Custom
40 does that automatically."
43 :set 'epa-file--file-name-regexp-set)
45 (defcustom epa-file-inhibit-auto-save t
46 "If non-nil, disable auto-saving when opening an encrypted file."
50 (defvar epa-file-encrypt-to nil
51 "*Recipient(s) used for encrypting files.
52 May either be a string or a list of strings.")
54 (put 'epa-file-encrypt-to 'safe-local-variable
65 (put 'epa-file-encrypt-to 'permanent-local t)
67 (defvar epa-file-handler
68 (cons epa-file-name-regexp 'epa-file-handler))
70 (defvar epa-file-auto-mode-alist-entry
71 (list epa-file-name-regexp nil 'epa-file))
73 (defun epa-file-name-regexp-update ()
75 (unless (equal (car epa-file-handler) epa-file-name-regexp)
76 (setcar epa-file-handler epa-file-name-regexp)))
78 (defun epa-file-find-file-hook ()
79 (if (and buffer-file-name
80 (string-match epa-file-name-regexp buffer-file-name)
81 epa-file-inhibit-auto-save)
84 (define-minor-mode auto-encryption-mode
85 "Toggle automatic file encryption and decryption.
86 With prefix argument ARG, turn auto encryption on if positive, else off.
87 Return the new status of auto encryption (non-nil means on)."
88 :global t :init-value t :group 'epa-file :version "23.1"
89 ;; We'd like to use custom-initialize-set here so the setup is done
90 ;; before dumping, but at the point where the defcustom is evaluated,
91 ;; the corresponding function isn't defined yet, so
92 ;; custom-initialize-set signals an error.
93 :initialize 'custom-initialize-delay
94 (setq file-name-handler-alist
95 (delq epa-file-handler file-name-handler-alist))
96 (remove-hook 'find-file-hooks 'epa-file-find-file-hook)
97 (setq auto-mode-alist (delq epa-file-auto-mode-alist-entry
99 (when auto-encryption-mode
100 (setq file-name-handler-alist
101 (cons epa-file-handler file-name-handler-alist))
102 (add-hook 'find-file-hook 'epa-file-find-file-hook)
103 (setq auto-mode-alist (cons epa-file-auto-mode-alist-entry
106 (put 'epa-file-handler 'safe-magic t)
107 (put 'epa-file-handler 'operations '(write-region insert-file-contents))
111 ;; arch-tag: f75c8a50-d32e-4eb3-9ec6-9e940c1fc8b5
112 ;;; epa-hook.el ends here