Commit | Line | Data |
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55535639 | 1 | ;;; dissociate.el --- scramble text amusingly for Emacs |
c0274f38 | 2 | |
f2e3589a | 3 | ;; Copyright (C) 1985, 2001, 2002, 2003, 2004, 2005, |
2f043267 | 4 | ;; 2006, 2007, 2008 Free Software Foundation, Inc. |
9750e079 | 5 | |
2f14b48d | 6 | ;; Maintainer: FSF |
e5167999 | 7 | ;; Keywords: games |
2f14b48d | 8 | |
a2535589 JA |
9 | ;; This file is part of GNU Emacs. |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
5a9dffec | 13 | ;; the Free Software Foundation; either version 3, or (at your option) |
a2535589 JA |
14 | ;; any later version. |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
b578f267 | 22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
3a35cf56 LK |
23 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | ;; Boston, MA 02110-1301, USA. | |
a2535589 | 25 | |
e41b2db1 ER |
26 | ;;; Commentary: |
27 | ||
eb8c3be9 | 28 | ;; The single entry point, `dissociated-press', applies a travesty |
e41b2db1 ER |
29 | ;; generator to the current buffer. The results can be quite amusing. |
30 | ||
2f14b48d | 31 | ;;; Code: |
a2535589 | 32 | |
f9f9507e | 33 | ;;;###autoload |
a2535589 JA |
34 | (defun dissociated-press (&optional arg) |
35 | "Dissociate the text of the current buffer. | |
36 | Output goes in buffer named *Dissociation*, | |
37 | which is redisplayed each time text is added to it. | |
38 | Every so often the user must say whether to continue. | |
39 | If ARG is positive, require ARG chars of continuity. | |
40 | If ARG is negative, require -ARG words of continuity. | |
41 | Default is 2." | |
42 | (interactive "P") | |
43 | (setq arg (if arg (prefix-numeric-value arg) 2)) | |
44 | (let* ((inbuf (current-buffer)) | |
45 | (outbuf (get-buffer-create "*Dissociation*")) | |
46 | (move-function (if (> arg 0) 'forward-char 'forward-word)) | |
47 | (move-amount (if (> arg 0) arg (- arg))) | |
48 | (search-function (if (> arg 0) 'search-forward 'word-search-forward)) | |
49 | (last-query-point 0)) | |
8bce0867 RS |
50 | (if (= (point-max) (point-min)) |
51 | (error "The buffer contains no text to start from")) | |
a2535589 JA |
52 | (switch-to-buffer outbuf) |
53 | (erase-buffer) | |
54 | (while | |
55 | (save-excursion | |
56 | (goto-char last-query-point) | |
57 | (vertical-motion (- (window-height) 4)) | |
58 | (or (= (point) (point-max)) | |
59 | (and (progn (goto-char (point-max)) | |
60 | (y-or-n-p "Continue dissociation? ")) | |
61 | (progn | |
62 | (message "") | |
63 | (recenter 1) | |
64 | (setq last-query-point (point-max)) | |
65 | t)))) | |
66 | (let (start end) | |
67 | (save-excursion | |
68 | (set-buffer inbuf) | |
69 | (setq start (point)) | |
70 | (if (eq move-function 'forward-char) | |
71 | (progn | |
72 | (setq end (+ start (+ move-amount (random 16)))) | |
73 | (if (> end (point-max)) | |
74 | (setq end (+ 1 move-amount (random 16)))) | |
75 | (goto-char end)) | |
76 | (funcall move-function | |
77 | (+ move-amount (random 16)))) | |
78 | (setq end (point))) | |
79 | (let ((opoint (point))) | |
80 | (insert-buffer-substring inbuf start end) | |
81 | (save-excursion | |
82 | (goto-char opoint) | |
83 | (end-of-line) | |
84 | (and (> (current-column) fill-column) | |
85 | (do-auto-fill))))) | |
86 | (save-excursion | |
87 | (set-buffer inbuf) | |
88 | (if (eobp) | |
89 | (goto-char (point-min)) | |
90 | (let ((overlap | |
91 | (buffer-substring (prog1 (point) | |
92 | (funcall move-function | |
93 | (- move-amount))) | |
94 | (point)))) | |
82305cbd | 95 | (goto-char (1+ (random (1- (point-max))))) |
a2535589 JA |
96 | (or (funcall search-function overlap nil t) |
97 | (let ((opoint (point))) | |
98 | (goto-char 1) | |
99 | (funcall search-function overlap opoint t)))))) | |
100 | (sit-for 0)))) | |
c0274f38 | 101 | |
d2fe6685 GM |
102 | (random t) |
103 | ||
896546cd RS |
104 | (provide 'dissociate) |
105 | ||
cbee283d | 106 | ;; arch-tag: 90d197d1-409b-45c5-a0b5-fbfb2e06334f |
c0274f38 | 107 | ;;; dissociate.el ends here |