-;;; decipher.el --- Cryptanalyze monoalphabetic substitution ciphers
+;;; decipher.el --- cryptanalyze monoalphabetic substitution ciphers
;;
-;; Copyright (C) 1995, 1996 Free Software Foundation, Inc.
+;; Copyright (C) 1995, 1996, 2002, 2003, 2004,
+;; 2005 Free Software Foundation, Inc.
;;
-;; Author: Christopher J. Madsen <ac608@yfn.ysu.edu>
+;; Author: Christopher J. Madsen <chris_madsen@geocities.com>
;; Keywords: games
;;
;; This file is part of GNU Emacs.
;;
;; 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., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+;;; Commentary:
+;;
;;; Quick Start:
;;
;; To decipher a message, type or load it into a buffer and type
;; Helen Fouche Gaines
;; ISBN 0-486-20097-3
-;;; Commentary:
-;;
;; This package is designed to help you crack simple substitution
;; ciphers where one letter stands for another. It works for ciphers
;; with or without word divisions. (You must set the variable
(eval-when-compile
(require 'cl))
-(defvar decipher-force-uppercase t
+(defgroup decipher nil
+ "Cryptanalyze monoalphabetic substitution ciphers."
+ :prefix "decipher-"
+ :group 'games)
+
+(defcustom decipher-force-uppercase t
"*Non-nil means to convert ciphertext to uppercase.
-Nil means the case of the ciphertext is preserved.
-This variable must be set before typing `\\[decipher]'.")
+nil means the case of the ciphertext is preserved.
+This variable must be set before typing `\\[decipher]'."
+ :type 'boolean
+ :group 'decipher)
+
-(defvar decipher-ignore-spaces nil
+(defcustom decipher-ignore-spaces nil
"*Non-nil means to ignore spaces and punctuation when counting digrams.
-You should set this to `nil' if the cipher message is divided into words,
-or `t' if it is not.
-This variable is buffer-local.")
+You should set this to nil if the cipher message is divided into words,
+or t if it is not.
+This variable is buffer-local."
+ :type 'boolean
+ :group 'decipher)
(make-variable-buffer-local 'decipher-ignore-spaces)
-(defvar decipher-undo-limit 5000
+(defcustom decipher-undo-limit 5000
"The maximum number of entries in the undo list.
When the undo list exceeds this number, 100 entries are deleted from
-the tail of the list.")
+the tail of the list."
+ :type 'integer
+ :group 'decipher)
+
+(defcustom decipher-mode-hook nil
+ "Hook to run upon entry to decipher."
+ :type 'hook
+ :group 'decipher)
;; End of user modifiable variables
;;--------------------------------------------------------------------
(defvar decipher-font-lock-keywords
'(("^:.*" . font-lock-keyword-face)
("^>.*" . font-lock-string-face)
- ("^%!.*" . font-lock-reference-face)
+ ("^%!.*" . font-lock-constant-face)
("^%.*" . font-lock-comment-face)
("\\`(\\([a-z]+\\) +\\([A-Z]+\\)"
(1 font-lock-string-face)
Ciphertext uses `font-lock-keyword-face', plaintext uses
`font-lock-string-face', comments use `font-lock-comment-face', and
-checkpoints use `font-lock-reference-face'. You can customize the
+checkpoints use `font-lock-constant-face'. You can customize the
display by changing these variables. For best results, I recommend
that all faces use the same background color.
(define-key decipher-mode-map "R" 'decipher-restore-checkpoint)
(define-key decipher-mode-map "U" 'decipher-undo)
(define-key decipher-mode-map " " 'decipher-keypress)
- (substitute-key-definition 'undo 'decipher-undo
- decipher-mode-map global-map)
- (substitute-key-definition 'advertised-undo 'decipher-undo
- decipher-mode-map global-map)
+ (define-key decipher-mode-map [remap undo] 'decipher-undo)
+ (define-key decipher-mode-map [remap advertised-undo] 'decipher-undo)
(let ((key ?a))
(while (<= key ?z)
(define-key decipher-mode-map (vector key) 'decipher-keypress)
(setq case-fold-search nil)) ;Case is significant when searching
(use-local-map decipher-mode-map)
(set-syntax-table decipher-mode-syntax-table)
- (decipher-read-alphabet)
+ (unless (= (point-min) (point-max))
+ (decipher-read-alphabet))
(set (make-local-variable 'font-lock-defaults)
'(decipher-font-lock-keywords t))
;; Make the buffer writable when we exit Decipher mode:
- (make-local-hook 'change-major-mode-hook)
(add-hook 'change-major-mode-hook
(lambda () (setq buffer-read-only nil
buffer-undo-list nil))
nil t)
- (run-hooks 'decipher-mode-hook)
+ (run-mode-hooks 'decipher-mode-hook)
(setq buffer-read-only t))
(put 'decipher-mode 'mode-class 'special)
(set-buffer (decipher-stats-buffer))
(goto-char (point-min))
(or (re-search-forward (format "^%c: " cipher-char) nil t)
- (error "Character `%c' is not used in ciphertext." cipher-char))
+ (error "Character `%c' is not used in ciphertext" cipher-char))
(forward-line -1)
(setq start (point))
(forward-line 3)
(forward-char))
(or (equal decipher-char ?\ )
(progn
- (setq decipher-char ?\ ;
+ (setq decipher-char ?\s
decipher--loop-prev-char ?\ )
(funcall func)))))))
major-mode 'decipher-stats-mode
mode-name "Decipher-Stats")
(use-local-map decipher-stats-mode-map)
- (run-hooks 'decipher-stats-mode-hook))
+ (run-mode-hooks 'decipher-stats-mode-hook))
(put 'decipher-stats-mode 'mode-class 'special)
;;--------------------------------------------------------------------
;;; (delete-backward-char 1)
;;; (insert ")\n"))))))
+;;; arch-tag: 8f094d88-ffe1-4f99-afe3-a5e81dd939d9
;;; decipher.el ends here