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4203c128 | 1 | ;;; morse.el --- convert text to morse code and back -*- coding: utf-8 -*- |
a4ff849c | 2 | |
4203c128 | 3 | ;; Copyright (C) 1995, 2002 Free Software Foundation, Inc. |
a4ff849c RS |
4 | |
5 | ;; Author: Rick Farnbach <rick_farnbach@MENTORG.COM> | |
0c0e321f | 6 | ;; Keywords: games |
a4ff849c RS |
7 | |
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
22 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | ;; Boston, MA 02111-1307, USA. | |
a4ff849c | 24 | |
0c0e321f DL |
25 | ;;; Commentary: |
26 | ||
27 | ;; Converts text to Morse code and back with M-x morese-region and | |
28 | ;; M-x unmorse-region (though Morse code is no longer official :-(). | |
29 | ||
a4ff849c RS |
30 | ;;; Code: |
31 | ||
32 | (defvar morse-code '(("a" . ".-") | |
33 | ("b" . "-...") | |
34 | ("c" . "-.-.") | |
35 | ("d" . "-..") | |
36 | ("e" . ".") | |
37 | ("f" . "..-.") | |
38 | ("g" . "--.") | |
39 | ("h" . "....") | |
40 | ("i" . "..") | |
41 | ("j" . ".---") | |
42 | ("k" . "-.-") | |
43 | ("l" . ".-..") | |
44 | ("m" . "--") | |
45 | ("n" . "-.") | |
46 | ("o" . "---") | |
47 | ("p" . ".--.") | |
48 | ("q" . "--.-") | |
49 | ("r" . ".-.") | |
50 | ("s" . "...") | |
51 | ("t" . "-") | |
52 | ("u" . "..-") | |
53 | ("v" . "...-") | |
54 | ("w" . ".--") | |
55 | ("x" . "-..-") | |
56 | ("y" . "-.--") | |
57 | ("z" . "--..") | |
58 | ;; Punctuation | |
59 | ("=" . "-...-") | |
60 | ("?" . "..--..") | |
61 | ("/" . "-..-.") | |
62 | ("," . "--..--") | |
63 | ("." . ".-.-.-") | |
64 | (":" . "---...") | |
65 | ("'" . ".----.") | |
66 | ("-" . "-....-") | |
67 | ("(" . "-.--.-") | |
68 | (")" . "-.--.-") | |
69 | ;; Numbers | |
70 | ("0" . "-----") | |
71 | ("1" . ".----") | |
72 | ("2" . "..---") | |
73 | ("3" . "...--") | |
74 | ("4" . "....-") | |
75 | ("5" . ".....") | |
76 | ("6" . "-....") | |
77 | ("7" . "--...") | |
78 | ("8" . "---..") | |
4203c128 SJ |
79 | ("9" . "----.") |
80 | ;; Non-ASCII | |
81 | ("Ä" . ".-.-") | |
34c4c919 | 82 | ("Æ" . ".-.-") |
4203c128 SJ |
83 | ("Á" . ".--.-") |
84 | ("Å" . ".--.-") | |
85 | ;; ligature character?? ("Ch" . "----") | |
86 | ("ß" . ".../...") | |
87 | ("É" . "..-..") | |
88 | ("Ñ" . "--.--") | |
89 | ("Ö" . "---.") | |
34c4c919 | 90 | ("Ø" . "---.") |
4203c128 | 91 | ("Ü" . "..--")) |
a4ff849c RS |
92 | "Morse code character set.") |
93 | ||
0c0e321f | 94 | ;;;###autoload |
a4ff849c RS |
95 | (defun morse-region (beg end) |
96 | "Convert all text in a given region to morse code." | |
97 | (interactive "r") | |
98 | (if (integerp end) | |
99 | (setq end (copy-marker end))) | |
100 | (save-excursion | |
101 | (let ((sep "") | |
102 | str morse) | |
103 | (goto-char beg) | |
104 | (while (< (point) end) | |
105 | (setq str (downcase (buffer-substring (point) (1+ (point))))) | |
106 | (cond ((looking-at "\\s-+") | |
107 | (goto-char (match-end 0)) | |
108 | (setq sep "")) | |
109 | ((setq morse (assoc str morse-code)) | |
110 | (delete-char 1) | |
111 | (insert sep (cdr morse)) | |
112 | (setq sep "/")) | |
113 | (t | |
114 | (forward-char 1) | |
115 | (setq sep ""))))))) | |
116 | ||
0c0e321f | 117 | ;;;###autoload |
a4ff849c RS |
118 | (defun unmorse-region (beg end) |
119 | "Convert morse coded text in region to ordinary ASCII text." | |
120 | (interactive "r") | |
121 | (if (integerp end) | |
122 | (setq end (copy-marker end))) | |
123 | (save-excursion | |
124 | (let (str paren morse) | |
125 | (goto-char beg) | |
126 | (while (< (point) end) | |
127 | (if (null (looking-at "[-.]+")) | |
128 | (forward-char 1) | |
129 | (setq str (buffer-substring (match-beginning 0) (match-end 0))) | |
130 | (if (null (setq morse (rassoc str morse-code))) | |
131 | (goto-char (match-end 0)) | |
132 | (replace-match | |
133 | (if (string-equal "(" (car morse)) | |
134 | (if (setq paren (null paren)) "(" ")") | |
135 | (car morse)) t) | |
136 | (if (looking-at "/") | |
137 | (delete-char 1)))))))) | |
138 | ||
139 | (provide 'morse) | |
140 | ||
ab5796a9 | 141 | ;;; arch-tag: 3331e6c1-9a9e-453f-abfd-163a9c3f93a6 |
a4ff849c | 142 | ;;; morse.el ends here |