lisp/play/studly.el

   1 ;;; studly.el --- StudlyCaps (tm)(r)(c)(xxx)
   2
   3 ;; Maintainer: FSF
   4 ;; Keywords: games
   5
   6 ;;; This is in the public domain, since it was distributed
   7 ;;; by its author without a copyright notice in 1986.
   8
   9 ;;; Code:
  10
  11 (defun studlify-region (begin end)
  12   "Studlify-case the region"
  13   (interactive "*r")
  14   (save-excursion
  15     (goto-char begin)
  16     (setq begin (point))
  17     (while (and (<= (point) end)
  18                 (not (looking-at "\\W*\\'")))
  19       (forward-word 1)
  20       (backward-word 1)
  21       (setq begin (max (point) begin))
  22       (forward-word 1)
  23       (let ((offset 0)
  24             (word-end (min (point) end))
  25             c)
  26         (goto-char begin)
  27         (while (< (point) word-end)
  28           (setq offset (+ offset (following-char)))
  29           (forward-char 1))
  30         (setq offset (+ offset (following-char)))
  31         (goto-char begin)
  32         (while (< (point) word-end)
  33           (setq c (following-char))
  34           (if (and (= (% (+ c offset) 4) 2)
  35                    (let ((ch (following-char)))
  36                      (or (and (>= ch ?a) (<= ch ?z))
  37                          (and (>= ch ?A) (<= ch ?Z)))))
  38               (progn
  39                 (delete-char 1)
  40                 (insert (logxor c ? ))))
  41           (forward-char 1))
  42         (setq begin (point))))))
  43
  44 (defun studlify-word (count)
  45   "Studlify-case the current word, or COUNT words if given an argument"
  46   (interactive "*p")
  47   (let ((begin (point)) end rb re)
  48     (forward-word count)
  49     (setq end (point))
  50     (setq rb (min begin end) re (max begin end))
  51     (studlify-region rb re)))
  52
  53 (defun studlify-buffer ()
  54   "Studlify-case the current buffer"
  55   (interactive "*")
  56   (studlify-region (point-min) (point-max)))
  57
  58 ;;; studly.el ends here