;;; morse.el --- convert text to morse code and back ;; Copyright (C) 1995, 2001-2018 Free Software Foundation, Inc. ;; Author: Rick Farnbach ;; 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 of the License, 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. If not, see . ;;; 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 :-(). ;; Converts text to NATO phonetic alphabet and back with M-x ;; nato-region and M-x denato-region. ;;; 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.") (defvar nato-alphabet '(("a" . "Alfa") ("b" . "Bravo") ("c" . "Charlie") ("d" . "Delta") ("e" . "Echo") ("f" . "Foxtrot") ("g" . "Golf") ("h" . "Hotel") ("i" . "India") ("j" . "Juliett") ("k" . "Kilo") ("l" . "Lima") ("m" . "Mike") ("n" . "November") ("o" . "Oscar") ("p" . "Papa") ("q" . "Quebec") ("r" . "Romeo") ("s" . "Sierra") ("t" . "Tango") ("u" . "Uniform") ("v" . "Victor") ("w" . "Whiskey") ("x" . "Xray") ("y" . "Yankee") ("z" . "Zulu") ;; Numbers ("0" . "Zero") ("1" . "One") ("2" . "Two") ("3" . "Three") ("4" . "Four") ("5" . "Five") ("6" . "Six") ("7" . "Seven") ("8" . "Eight") ("9" . "Niner") ;; Punctuation is not part of standard ("=" . "Equals") ("?" . "Query") ("/" . "Slash") ("," . "Comma") ("." . "Stop") (":" . "Colon") ("'" . "Apostrophe") ("-" . "Dash") ("(" . "Open") (")" . "Close") ("@" . "At")) "NATO phonetic alphabet. See “International Code of Signals” (INTERCO), United States Edition, 1969 Edition (Revised 2003) available from National Geospatial-Intelligence Agency at URL `http://www.nga.mil/'") ;;;###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)))))))) ;;;###autoload (defun nato-region (beg end) "Convert all text in a given region to NATO phonetic alphabet." ;; Copied from morse-region. -- ashawley 2009-02-10 (interactive "*r") (if (integerp end) (setq end (copy-marker end))) (save-excursion (let ((sep "") str nato) (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 nato (assoc str nato-alphabet)) (delete-char 1) (insert sep (cdr nato)) (setq sep "-")) (t (forward-char 1) (setq sep ""))))))) ;;;###autoload (defun denato-region (beg end) "Convert NATO phonetic alphabet in region to ordinary ASCII text." ;; Copied from unmorse-region. -- ashawley 2009-02-10 (interactive "*r") (if (integerp end) (setq end (copy-marker end))) (save-excursion (let (str paren nato) (goto-char beg) (while (< (point) end) (if (null (looking-at "[a-z]+")) (forward-char 1) (setq str (buffer-substring (match-beginning 0) (match-end 0))) (if (null (setq nato (rassoc (capitalize str) nato-alphabet))) (goto-char (match-end 0)) (replace-match (if (string-equal "(" (car nato)) (if (setq paren (null paren)) "(" ")") (car nato)) t) (if (looking-at "-") (delete-char 1)))))))) (provide 'morse) ;;; morse.el ends here