[bpt/emacs.git] / lisp / play / morse.el

;;; morse.el --- convert text to morse code and back             -*- coding: utf-8 -*-

;; Copyright (C) 1995, 2001, 2002, 2003, 2004, 2005,
;;   2006, 2007 Free Software Foundation, Inc.

;; Author: Rick Farnbach <rick_farnbach@MENTORG.COM>
;; Keywords: games

;; This file is part of GNU Emacs.

;; GNU Emacs 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.

;; GNU Emacs 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:

;; Converts text to Morse code and back with M-x morse-region and
;; M-x unmorse-region (though Morse code is no longer official :-().

;;; Code:

(defvar morse-code '(("a" . ".-")
		     ("b" . "-...")
		     ("c" . "-.-.")
		     ("d" . "-..")
		     ("e" . ".")
		     ("f" . "..-.")
		     ("g" . "--.")
		     ("h" . "....")
		     ("i" . "..")
		     ("j" . ".---")
		     ("k" . "-.-")
		     ("l" . ".-..")
		     ("m" . "--")
		     ("n" . "-.")
		     ("o" . "---")
		     ("p" . ".--.")
		     ("q" . "--.-")
		     ("r" . ".-.")
		     ("s" . "...")
		     ("t" . "-")
		     ("u" . "..-")
		     ("v" . "...-")
		     ("w" . ".--")
		     ("x" . "-..-")
		     ("y" . "-.--")
		     ("z" . "--..")
		     ;; Punctuation
		     ("=" . "-...-")
		     ("?" . "..--..")
		     ("/" . "-..-.")
		     ("," . "--..--")
		     ("." . ".-.-.-")
		     (":" . "---...")
		     ("'" . ".----.")
		     ("-" . "-....-")
		     ("(" . "-.--.-")
		     (")" . "-.--.-")
		     ;; Numbers
		     ("0" . "-----")
		     ("1" . ".----")
		     ("2" . "..---")
		     ("3" . "...--")
		     ("4" . "....-")
		     ("5" . ".....")
		     ("6" . "-....")
		     ("7" . "--...")
		     ("8" . "---..")
		     ("9" . "----.")
		     ;; Non-ASCII
		     ("Ä" . ".-.-")
		     ("Æ" . ".-.-")
		     ("Á" . ".--.-")
		     ("Å" . ".--.-")
		     ;; ligature character?? ("Ch" . "----")
		     ("ß" . ".../...")
		     ("É" . "..-..")
		     ("Ñ" . "--.--")
		     ("Ö" . "---.")
		     ("Ø" . "---.")
		     ("Ü" . "..--")
		     ;; Recently standardized
		     ("@" . ".--.-."))
  "Morse code character set.")

;;;###autoload
(defun morse-region (beg end)
  "Convert all text in a given region to morse code."
  (interactive "r")
  (if (integerp end)
      (setq end (copy-marker end)))
  (save-excursion
    (let ((sep "")
	  str morse)
      (goto-char beg)
      (while (< (point) end)
	(setq str (downcase (buffer-substring (point) (1+ (point)))))
	(cond ((looking-at "\\s-+")
	       (goto-char (match-end 0))
	       (setq sep ""))
	      ((setq morse (assoc str morse-code))
	       (delete-char 1)
	       (insert sep (cdr morse))
	       (setq sep "/"))
	      (t
	       (forward-char 1)
	       (setq sep "")))))))

;;;###autoload
(defun unmorse-region (beg end)
  "Convert morse coded text in region to ordinary ASCII text."
  (interactive "r")
  (if (integerp end)
      (setq end (copy-marker end)))
  (save-excursion
    (let (str paren morse)
      (goto-char beg)
      (while (< (point) end)
	(if (null (looking-at "[-.]+"))
	    (forward-char 1)
	  (setq str (buffer-substring (match-beginning 0) (match-end 0)))
	  (if (null (setq morse (rassoc str morse-code)))
	      (goto-char (match-end 0))
	    (replace-match
		  (if (string-equal "(" (car morse))
		      (if (setq paren (null paren)) "(" ")")
		    (car morse)) t)
	    (if (looking-at "/")
		(delete-char 1))))))))

(provide 'morse)

;;; arch-tag: 3331e6c1-9a9e-453f-abfd-163a9c3f93a6
;;; morse.el ends here
Commit	Line	Data
4203c128	1	;;; morse.el --- convert text to morse code and back -- coding: utf-8 --
a4ff849c	2
f2e3589a	3	;; Copyright (C) 1995, 2001, 2002, 2003, 2004, 2005,
d7a0267c	4	;; 2006, 2007 Free Software Foundation, Inc.
a4ff849c RS	5
a4ff849c RS	6	;; Author: Rick Farnbach <rick_farnbach@MENTORG.COM>
0c0e321f	7	;; Keywords: games
a4ff849c RS	8
	9	;; This file is part of GNU Emacs.
	10
	11	;; GNU Emacs is free software; you can redistribute it and/or modify
	12	;; it under the terms of the GNU General Public License as published by
5a9dffec	13	;; the Free Software Foundation; either version 3, or (at your option)
a4ff849c RS	14	;; any later version.
	15
	16	;; GNU Emacs is distributed in the hope that it will be useful,
	17	;; but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	;; GNU General Public License for more details.
	20
	21	;; You should have received a copy of the GNU General Public License
b578f267	22	;; along with GNU Emacs; see the file COPYING. If not, write to the
3a35cf56 LK	23	;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
3a35cf56 LK	24	;; Boston, MA 02110-1301, USA.
a4ff849c	25
0c0e321f DL	26	;;; Commentary:
0c0e321f DL	27
507c5deb	28	;; Converts text to Morse code and back with M-x morse-region and
0c0e321f DL	29	;; M-x unmorse-region (though Morse code is no longer official :-().
0c0e321f DL	30
a4ff849c RS	31	;;; Code:
	32
	33	(defvar morse-code '(("a" . ".-")
	34	("b" . "-...")
	35	("c" . "-.-.")
	36	("d" . "-..")
	37	("e" . ".")
	38	("f" . "..-.")
	39	("g" . "--.")
	40	("h" . "....")
	41	("i" . "..")
	42	("j" . ".---")
	43	("k" . "-.-")
	44	("l" . ".-..")
	45	("m" . "--")
	46	("n" . "-.")
	47	("o" . "---")
	48	("p" . ".--.")
	49	("q" . "--.-")
	50	("r" . ".-.")
	51	("s" . "...")
	52	("t" . "-")
	53	("u" . "..-")
	54	("v" . "...-")
	55	("w" . ".--")
	56	("x" . "-..-")
	57	("y" . "-.--")
	58	("z" . "--..")
	59	;; Punctuation
	60	("=" . "-...-")
	61	("?" . "..--..")
	62	("/" . "-..-.")
	63	("," . "--..--")
	64	("." . ".-.-.-")
	65	(":" . "---...")
	66	("'" . ".----.")
	67	("-" . "-....-")
	68	("(" . "-.--.-")
	69	(")" . "-.--.-")
	70	;; Numbers
	71	("0" . "-----")
	72	("1" . ".----")
	73	("2" . "..---")
	74	("3" . "...--")
	75	("4" . "....-")
	76	("5" . ".....")
	77	("6" . "-....")
	78	("7" . "--...")
	79	("8" . "---..")
4203c128 SJ	80	("9" . "----.")
	81	;; Non-ASCII
	82	("Ä" . ".-.-")
34c4c919	83	("Æ" . ".-.-")
4203c128 SJ	84	("Á" . ".--.-")
	85	("Å" . ".--.-")
	86	;; ligature character?? ("Ch" . "----")
	87	("ß" . ".../...")
	88	("É" . "..-..")
	89	("Ñ" . "--.--")
	90	("Ö" . "---.")
34c4c919	91	("Ø" . "---.")
507c5deb SJ	92	("Ü" . "..--")
	93	;; Recently standardized
	94	("@" . ".--.-."))
a4ff849c RS	95	"Morse code character set.")
a4ff849c RS	96
0c0e321f	97	;;;###autoload
a4ff849c RS	98	(defun morse-region (beg end)
	99	"Convert all text in a given region to morse code."
	100	(interactive "r")
	101	(if (integerp end)
	102	(setq end (copy-marker end)))
	103	(save-excursion
	104	(let ((sep "")
	105	str morse)
	106	(goto-char beg)
	107	(while (< (point) end)
	108	(setq str (downcase (buffer-substring (point) (1+ (point)))))
	109	(cond ((looking-at "\\s-+")
	110	(goto-char (match-end 0))
	111	(setq sep ""))
	112	((setq morse (assoc str morse-code))
	113	(delete-char 1)
	114	(insert sep (cdr morse))
	115	(setq sep "/"))
	116	(t
	117	(forward-char 1)
	118	(setq sep "")))))))
	119
0c0e321f	120	;;;###autoload
a4ff849c RS	121	(defun unmorse-region (beg end)
	122	"Convert morse coded text in region to ordinary ASCII text."
	123	(interactive "r")
	124	(if (integerp end)
	125	(setq end (copy-marker end)))
	126	(save-excursion
	127	(let (str paren morse)
	128	(goto-char beg)
	129	(while (< (point) end)
	130	(if (null (looking-at "[-.]+"))
	131	(forward-char 1)
	132	(setq str (buffer-substring (match-beginning 0) (match-end 0)))
	133	(if (null (setq morse (rassoc str morse-code)))
	134	(goto-char (match-end 0))
	135	(replace-match
	136	(if (string-equal "(" (car morse))
	137	(if (setq paren (null paren)) "(" ")")
	138	(car morse)) t)
	139	(if (looking-at "/")
	140	(delete-char 1))))))))
	141
	142	(provide 'morse)
	143
ab5796a9	144	;;; arch-tag: 3331e6c1-9a9e-453f-abfd-163a9c3f93a6
a4ff849c	145	;;; morse.el ends here