code.delx.au - gnu-emacs/blob - lisp/play/studly.el

   1 ;;; studly.el --- StudlyCaps (tm)(r)(c)(xxx)
   2
   3 ;; Copyright (C) 1992 Free Software Foundation, Inc.
   4
   5 ;; This file is part of GNU Emacs.
   6
   7 ;; GNU Emacs is free software; you can redistribute it and/or modify
   8 ;; it under the terms of the GNU General Public License as published by
   9 ;; the Free Software Foundation; either version 1, or (at your option)
  10 ;; any later version.
  11
  12 ;; GNU Emacs is distributed in the hope that it will be useful,
  13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;; GNU General Public License for more details.
  16
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with GNU Emacs; see the file COPYING.  If not, write to
  19 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21 (defun studlify-region (begin end)
  22   "Studlify-case the region"
  23   (interactive "*r")
  24   (save-excursion
  25     (goto-char begin)
  26     (setq begin (point))
  27     (while (and (<= (point) end)
  28                 (not (looking-at "\\W*\\'")))
  29       (forward-word 1)
  30       (backward-word 1)
  31       (setq begin (max (point) begin))
  32       (forward-word 1)
  33       (let ((offset 0)
  34             (word-end (min (point) end))
  35             c)
  36         (goto-char begin)
  37         (while (< (point) word-end)
  38           (setq offset (+ offset (following-char)))
  39           (forward-char 1))
  40         (setq offset (+ offset (following-char)))
  41         (goto-char begin)
  42         (while (< (point) word-end)
  43           (setq c (following-char))
  44           (if (and (= (% (+ c offset) 4) 2)
  45                    (let ((ch (following-char)))
  46                      (or (and (>= ch ?a) (<= ch ?z))
  47                          (and (>= ch ?A) (<= ch ?Z)))))
  48               (progn
  49                 (delete-char 1)
  50                 (insert (logxor c ? ))))
  51           (forward-char 1))
  52         (setq begin (point))))))
  53
  54 (defun studlify-word (count)
  55   "Studlify-case the current word, or COUNT words if given an argument"
  56   (interactive "*p")
  57   (let ((begin (point)) end rb re)
  58     (forward-word count)
  59     (setq end (point))
  60     (setq rb (min begin end) re (max begin end))
  61     (studlify-region rb re)))
  62
  63 (defun studlify-buffer ()
  64   "Studlify-case the current buffer"
  65   (interactive "*")
  66   (studlify-region (point-min) (point-max)))
  67
  68 ;;; studly.el ends here