Commit | Line | Data |
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55535639 | 1 | ;;; dissociate.el --- scramble text amusingly for Emacs |
c0274f38 | 2 | |
acaf905b | 3 | ;; Copyright (C) 1985, 2001-2012 Free Software Foundation, Inc. |
9750e079 | 4 | |
2f14b48d | 5 | ;; Maintainer: FSF |
e5167999 | 6 | ;; Keywords: games |
2f14b48d | 7 | |
a2535589 JA |
8 | ;; This file is part of GNU Emacs. |
9 | ||
b1fc2b50 | 10 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
a2535589 | 11 | ;; it under the terms of the GNU General Public License as published by |
b1fc2b50 GM |
12 | ;; the Free Software Foundation, either version 3 of the License, or |
13 | ;; (at your option) any later version. | |
a2535589 JA |
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 | |
b1fc2b50 | 21 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
a2535589 | 22 | |
e41b2db1 ER |
23 | ;;; Commentary: |
24 | ||
eb8c3be9 | 25 | ;; The single entry point, `dissociated-press', applies a travesty |
e41b2db1 ER |
26 | ;; generator to the current buffer. The results can be quite amusing. |
27 | ||
2f14b48d | 28 | ;;; Code: |
a2535589 | 29 | |
f9f9507e | 30 | ;;;###autoload |
a2535589 JA |
31 | (defun dissociated-press (&optional arg) |
32 | "Dissociate the text of the current buffer. | |
33 | Output goes in buffer named *Dissociation*, | |
34 | which is redisplayed each time text is added to it. | |
35 | Every so often the user must say whether to continue. | |
36 | If ARG is positive, require ARG chars of continuity. | |
37 | If ARG is negative, require -ARG words of continuity. | |
38 | Default is 2." | |
39 | (interactive "P") | |
40 | (setq arg (if arg (prefix-numeric-value arg) 2)) | |
41 | (let* ((inbuf (current-buffer)) | |
42 | (outbuf (get-buffer-create "*Dissociation*")) | |
43 | (move-function (if (> arg 0) 'forward-char 'forward-word)) | |
44 | (move-amount (if (> arg 0) arg (- arg))) | |
45 | (search-function (if (> arg 0) 'search-forward 'word-search-forward)) | |
46 | (last-query-point 0)) | |
8bce0867 RS |
47 | (if (= (point-max) (point-min)) |
48 | (error "The buffer contains no text to start from")) | |
a2535589 JA |
49 | (switch-to-buffer outbuf) |
50 | (erase-buffer) | |
51 | (while | |
52 | (save-excursion | |
53 | (goto-char last-query-point) | |
54 | (vertical-motion (- (window-height) 4)) | |
55 | (or (= (point) (point-max)) | |
56 | (and (progn (goto-char (point-max)) | |
57 | (y-or-n-p "Continue dissociation? ")) | |
58 | (progn | |
59 | (message "") | |
60 | (recenter 1) | |
61 | (setq last-query-point (point-max)) | |
62 | t)))) | |
63 | (let (start end) | |
937e6a56 | 64 | (with-current-buffer inbuf |
a2535589 JA |
65 | (setq start (point)) |
66 | (if (eq move-function 'forward-char) | |
67 | (progn | |
68 | (setq end (+ start (+ move-amount (random 16)))) | |
69 | (if (> end (point-max)) | |
70 | (setq end (+ 1 move-amount (random 16)))) | |
71 | (goto-char end)) | |
72 | (funcall move-function | |
73 | (+ move-amount (random 16)))) | |
74 | (setq end (point))) | |
75 | (let ((opoint (point))) | |
76 | (insert-buffer-substring inbuf start end) | |
77 | (save-excursion | |
78 | (goto-char opoint) | |
79 | (end-of-line) | |
80 | (and (> (current-column) fill-column) | |
81 | (do-auto-fill))))) | |
937e6a56 | 82 | (with-current-buffer inbuf |
a2535589 JA |
83 | (if (eobp) |
84 | (goto-char (point-min)) | |
85 | (let ((overlap | |
86 | (buffer-substring (prog1 (point) | |
87 | (funcall move-function | |
88 | (- move-amount))) | |
89 | (point)))) | |
82305cbd | 90 | (goto-char (1+ (random (1- (point-max))))) |
a2535589 JA |
91 | (or (funcall search-function overlap nil t) |
92 | (let ((opoint (point))) | |
93 | (goto-char 1) | |
94 | (funcall search-function overlap opoint t)))))) | |
95 | (sit-for 0)))) | |
c0274f38 | 96 | |
896546cd RS |
97 | (provide 'dissociate) |
98 | ||
c0274f38 | 99 | ;;; dissociate.el ends here |