Commit | Line | Data |
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55535639 | 1 | ;;; hexl.el --- edit a file in a hex dump format using the hexl filter |
e5167999 | 2 | |
45ad49ba | 3 | ;; Copyright (C) 1989, 1994, 1998, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. |
a2535589 | 4 | |
3a801d0c | 5 | ;; Author: Keith Gabryelski <ag@wheaties.ai.mit.edu> |
b7f66977 RS |
6 | ;; Maintainer: FSF |
7 | ;; Keywords: data | |
3a801d0c | 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 | |
e5167999 | 13 | ;; the Free Software Foundation; either version 2, 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 EN |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
a2535589 | 25 | |
e5167999 ER |
26 | ;;; Commentary: |
27 | ||
e41b2db1 ER |
28 | ;; This package implements a major mode for editing binary files. It uses |
29 | ;; a program called hexl, supplied with the GNU Emacs distribution, that | |
30 | ;; can filter a binary into an editable format or from the format back into | |
31 | ;; binary. For full instructions, invoke `hexl-mode' on an empty buffer and | |
a0164df5 | 32 | ;; do M-x `describe-mode'. |
e41b2db1 | 33 | ;; |
a0164df5 | 34 | ;; NOTE: Remember to change `hexl-program' or `hexl-options' if needed. |
a2535589 JA |
35 | ;; |
36 | ;; Currently hexl only supports big endian hex output with 16 bit | |
37 | ;; grouping. | |
38 | ;; | |
39 | ;; -iso in `hexl-options' will allow iso characters to display in the | |
40 | ;; ASCII region of the screen (if your emacs supports this) instead of | |
41 | ;; changing them to dots. | |
42 | ||
e5167999 ER |
43 | ;;; Code: |
44 | ||
01ff9136 MY |
45 | (require 'eldoc) |
46 | ||
a2535589 JA |
47 | ;; |
48 | ;; vars here | |
49 | ;; | |
50 | ||
00ed33e7 RS |
51 | (defgroup hexl nil |
52 | "Edit a file in a hex dump format using the hexl filter." | |
53 | :group 'data) | |
54 | ||
55 | ||
56 | (defcustom hexl-program "hexl" | |
65e5f4bc | 57 | "The program that will hexlify and dehexlify its stdin. |
57f07931 | 58 | `hexl-program' will always be concatenated with `hexl-options' |
00ed33e7 RS |
59 | and \"-de\" when dehexlifying a buffer." |
60 | :type 'string | |
61 | :group 'hexl) | |
a2535589 | 62 | |
00ed33e7 | 63 | (defcustom hexl-iso "" |
a2535589 | 64 | "If your emacs can handle ISO characters, this should be set to |
00ed33e7 RS |
65 | \"-iso\" otherwise it should be \"\"." |
66 | :type 'string | |
67 | :group 'hexl) | |
a2535589 | 68 | |
00ed33e7 | 69 | (defcustom hexl-options (format "-hex %s" hexl-iso) |
b8c49a19 SM |
70 | "Space separated options to `hexl-program' that suit your needs. |
71 | Quoting cannot be used, so the arguments cannot themselves contain spaces." | |
00ed33e7 RS |
72 | :type 'string |
73 | :group 'hexl) | |
a2535589 | 74 | |
db6c5b92 SE |
75 | (defcustom hexl-follow-ascii t |
76 | "If non-nil then highlight the ASCII character corresponding to point." | |
77 | :type 'boolean | |
cd32a7ba DN |
78 | :group 'hexl |
79 | :version "20.3") | |
db6c5b92 | 80 | |
9fd76d04 MY |
81 | (defcustom hexl-mode-hook '(hexl-follow-line hexl-activate-ruler) |
82 | "Normal hook run when entering Hexl mode." | |
83 | :type 'hook | |
84 | :options '(hexl-follow-line hexl-activate-ruler turn-on-eldoc-mode) | |
85 | :group 'hexl) | |
86 | ||
87 | (defface hexl-address-area | |
88 | '((t (:inherit header-line))) | |
89 | "Face used in address are of hexl-mode buffer." | |
90 | :group 'hexl) | |
91 | ||
92 | (defface hexl-ascii-area | |
93 | '((t (:inherit header-line))) | |
94 | "Face used in ascii are of hexl-mode buffer." | |
95 | :group 'hexl) | |
96 | ||
a2535589 JA |
97 | (defvar hexl-max-address 0 |
98 | "Maximum offset into hexl buffer.") | |
99 | ||
100 | (defvar hexl-mode-map nil) | |
101 | ||
f39c6650 RS |
102 | (defvar hexl-mode-old-local-map) |
103 | (defvar hexl-mode-old-mode-name) | |
104 | (defvar hexl-mode-old-major-mode) | |
87b3b78a | 105 | (defvar hexl-mode-old-isearch-search-fun-function) |
0e4889b2 RS |
106 | (defvar hexl-mode-old-require-final-newline) |
107 | (defvar hexl-mode-old-syntax-table) | |
f39c6650 | 108 | |
db6c5b92 SE |
109 | (defvar hexl-ascii-overlay nil |
110 | "Overlay used to highlight ASCII element corresponding to current point.") | |
111 | (make-variable-buffer-local 'hexl-ascii-overlay) | |
112 | ||
a2535589 JA |
113 | ;; routines |
114 | ||
2d902813 RS |
115 | (put 'hexl-mode 'mode-class 'special) |
116 | ||
31c75fa7 | 117 | ;;;###autoload |
a2535589 | 118 | (defun hexl-mode (&optional arg) |
330bd7c3 PR |
119 | "\\<hexl-mode-map>A mode for editing binary files in hex dump format. |
120 | This is not an ordinary major mode; it alters some aspects | |
fe0a77c6 | 121 | of the current mode's behavior, but not all; also, you can exit |
330bd7c3 | 122 | Hexl mode and return to the previous mode using `hexl-mode-exit'. |
a2535589 JA |
123 | |
124 | This function automatically converts a buffer into the hexl format | |
125 | using the function `hexlify-buffer'. | |
126 | ||
8a1281b5 | 127 | Each line in the buffer has an \"address\" (displayed in hexadecimal) |
a2535589 JA |
128 | representing the offset into the file that the characters on this line |
129 | are at and 16 characters from the file (displayed as hexadecimal | |
130 | values grouped every 16 bits) and as their ASCII values. | |
131 | ||
132 | If any of the characters (displayed as ASCII characters) are | |
133 | unprintable (control or meta characters) they will be replaced as | |
134 | periods. | |
135 | ||
8a1281b5 RS |
136 | If `hexl-mode' is invoked with an argument the buffer is assumed to be |
137 | in hexl format. | |
a2535589 JA |
138 | |
139 | A sample format: | |
140 | ||
141 | HEX ADDR: 0001 0203 0405 0607 0809 0a0b 0c0d 0e0f ASCII-TEXT | |
142 | -------- ---- ---- ---- ---- ---- ---- ---- ---- ---------------- | |
143 | 00000000: 5468 6973 2069 7320 6865 786c 2d6d 6f64 This is hexl-mod | |
144 | 00000010: 652e 2020 4561 6368 206c 696e 6520 7265 e. Each line re | |
145 | 00000020: 7072 6573 656e 7473 2031 3620 6279 7465 presents 16 byte | |
146 | 00000030: 7320 6173 2068 6578 6164 6563 696d 616c s as hexadecimal | |
147 | 00000040: 2041 5343 4949 0a61 6e64 2070 7269 6e74 ASCII.and print | |
148 | 00000050: 6162 6c65 2041 5343 4949 2063 6861 7261 able ASCII chara | |
149 | 00000060: 6374 6572 732e 2020 416e 7920 636f 6e74 cters. Any cont | |
150 | 00000070: 726f 6c20 6f72 206e 6f6e 2d41 5343 4949 rol or non-ASCII | |
71296446 | 151 | 00000080: 2063 6861 7261 6374 6572 730a 6172 6520 characters.are |
a2535589 JA |
152 | 00000090: 6469 7370 6c61 7965 6420 6173 2070 6572 displayed as per |
153 | 000000a0: 696f 6473 2069 6e20 7468 6520 7072 696e iods in the prin | |
71296446 | 154 | 000000b0: 7461 626c 6520 6368 6172 6163 7465 7220 table character |
a2535589 JA |
155 | 000000c0: 7265 6769 6f6e 2e0a region.. |
156 | ||
157 | Movement is as simple as movement in a normal emacs text buffer. Most | |
158 | cursor movement bindings are the same (ie. Use \\[hexl-backward-char], \\[hexl-forward-char], \\[hexl-next-line], and \\[hexl-previous-line] | |
159 | to move the cursor left, right, down, and up). | |
160 | ||
161 | Advanced cursor movement commands (ala \\[hexl-beginning-of-line], \\[hexl-end-of-line], \\[hexl-beginning-of-buffer], and \\[hexl-end-of-buffer]) are | |
162 | also supported. | |
163 | ||
164 | There are several ways to change text in hexl mode: | |
165 | ||
166 | ASCII characters (character between space (0x20) and tilde (0x7E)) are | |
167 | bound to self-insert so you can simply type the character and it will | |
168 | insert itself (actually overstrike) into the buffer. | |
169 | ||
170 | \\[hexl-quoted-insert] followed by another keystroke allows you to insert the key even if | |
171 | it isn't bound to self-insert. An octal number can be supplied in place | |
172 | of another key to insert the octal number's ASCII representation. | |
173 | ||
174 | \\[hexl-insert-hex-char] will insert a given hexadecimal value (if it is between 0 and 0xFF) | |
175 | into the buffer at the current point. | |
176 | ||
177 | \\[hexl-insert-octal-char] will insert a given octal value (if it is between 0 and 0377) | |
178 | into the buffer at the current point. | |
179 | ||
180 | \\[hexl-insert-decimal-char] will insert a given decimal value (if it is between 0 and 255) | |
181 | into the buffer at the current point. | |
182 | ||
a2535589 JA |
183 | \\[hexl-mode-exit] will exit hexl-mode. |
184 | ||
31c75fa7 RS |
185 | Note: saving the file with any of the usual Emacs commands |
186 | will actually convert it back to binary format while saving. | |
a2535589 | 187 | |
330bd7c3 | 188 | You can use \\[hexl-find-file] to visit a file in Hexl mode. |
a2535589 JA |
189 | |
190 | \\[describe-bindings] for advanced commands." | |
191 | (interactive "p") | |
330bd7c3 | 192 | (unless (eq major-mode 'hexl-mode) |
753c1309 RS |
193 | (let ((modified (buffer-modified-p)) |
194 | (inhibit-read-only t) | |
87b3b78a | 195 | (original-point (- (point) (point-min))) |
753c1309 RS |
196 | max-address) |
197 | (and (eobp) (not (bobp)) | |
198 | (setq original-point (1- original-point))) | |
199 | (if (not (or (eq arg 1) (not arg))) | |
200 | ;; if no argument then we guess at hexl-max-address | |
201 | (setq max-address (+ (* (/ (1- (buffer-size)) 68) 16) 15)) | |
202 | (setq max-address (1- (buffer-size))) | |
7851eb98 EZ |
203 | ;; If the buffer's EOL type is -dos, we need to account for |
204 | ;; extra CR characters added when hexlify-buffer writes the | |
205 | ;; buffer to a file. | |
206 | (when (eq (coding-system-eol-type buffer-file-coding-system) 1) | |
207 | (setq max-address (+ (count-lines (point-min) (point-max)) | |
208 | max-address)) | |
209 | ;; But if there's no newline at the last line, we are off by | |
210 | ;; one; adjust. | |
211 | (or (eq (char-before (point-max)) ?\n) | |
212 | (setq max-address (1- max-address))) | |
213 | (setq original-point (+ (count-lines (point-min) (point)) | |
214 | original-point)) | |
215 | (or (bolp) (setq original-point (1- original-point)))) | |
753c1309 RS |
216 | (hexlify-buffer) |
217 | (set-buffer-modified-p modified)) | |
218 | (make-local-variable 'hexl-max-address) | |
219 | (setq hexl-max-address max-address) | |
220 | (hexl-goto-address original-point)) | |
221 | ||
0e4889b2 RS |
222 | ;; We do not turn off the old major mode; instead we just |
223 | ;; override most of it. That way, we can restore it perfectly. | |
a2535589 JA |
224 | (make-local-variable 'hexl-mode-old-local-map) |
225 | (setq hexl-mode-old-local-map (current-local-map)) | |
226 | (use-local-map hexl-mode-map) | |
227 | ||
228 | (make-local-variable 'hexl-mode-old-mode-name) | |
229 | (setq hexl-mode-old-mode-name mode-name) | |
230 | (setq mode-name "Hexl") | |
231 | ||
87b3b78a SM |
232 | (set (make-local-variable 'hexl-mode-old-isearch-search-fun-function) |
233 | isearch-search-fun-function) | |
234 | (set (make-local-variable 'isearch-search-fun-function) | |
235 | 'hexl-isearch-search-function) | |
236 | ||
a2535589 JA |
237 | (make-local-variable 'hexl-mode-old-major-mode) |
238 | (setq hexl-mode-old-major-mode major-mode) | |
239 | (setq major-mode 'hexl-mode) | |
240 | ||
0e4889b2 RS |
241 | (make-local-variable 'hexl-mode-old-syntax-table) |
242 | (setq hexl-mode-old-syntax-table (syntax-table)) | |
243 | (set-syntax-table (standard-syntax-table)) | |
244 | ||
87b3b78a | 245 | (add-hook 'write-contents-functions 'hexl-save-buffer nil t) |
31c75fa7 | 246 | |
0e4889b2 RS |
247 | (make-local-variable 'hexl-mode-old-require-final-newline) |
248 | (setq hexl-mode-old-require-final-newline require-final-newline) | |
249 | (make-local-variable 'require-final-newline) | |
250 | (setq require-final-newline nil) | |
251 | ||
252 | ;; Add hooks to rehexlify or dehexlify on various events. | |
c3de2bf0 RS |
253 | (add-hook 'after-revert-hook 'hexl-after-revert-hook nil t) |
254 | ||
db6c5b92 SE |
255 | (add-hook 'change-major-mode-hook 'hexl-maybe-dehexlify-buffer nil t) |
256 | ||
01ff9136 | 257 | ;; Set a callback function for eldoc. |
4f918f60 | 258 | (set (make-local-variable 'eldoc-print-current-symbol-info-function) |
01ff9136 MY |
259 | 'hexl-print-current-point-info) |
260 | (eldoc-add-command-completions "hexl-") | |
261 | (eldoc-remove-command "hexl-save-buffer" | |
262 | "hexl-current-address") | |
263 | ||
db6c5b92 | 264 | (if hexl-follow-ascii (hexl-follow-ascii 1))) |
7bfff21e | 265 | (run-hooks 'hexl-mode-hook)) |
a2535589 | 266 | |
87b3b78a SM |
267 | |
268 | (defun hexl-isearch-search-function () | |
269 | (if (and (not isearch-regexp) (not isearch-word)) | |
270 | (lambda (string &optional bound noerror count) | |
271 | (funcall | |
272 | (if isearch-forward 're-search-forward 're-search-backward) | |
273 | (if (> (length string) 80) | |
274 | (regexp-quote string) | |
275 | (mapconcat 'string string "\\(?:\n\\(?:[:a-f0-9]+ \\)+ \\)?")) | |
276 | bound noerror count)) | |
277 | (let ((isearch-search-fun-function nil)) | |
278 | (isearch-search-fun)))) | |
279 | ||
c3de2bf0 | 280 | (defun hexl-after-revert-hook () |
059c2e18 | 281 | (setq hexl-max-address (1- (buffer-size))) |
c3de2bf0 RS |
282 | (hexlify-buffer) |
283 | (set-buffer-modified-p nil)) | |
284 | ||
ac2e902d JB |
285 | (defvar hexl-in-save-buffer nil) |
286 | ||
a2535589 JA |
287 | (defun hexl-save-buffer () |
288 | "Save a hexl format buffer as binary in visited file if modified." | |
289 | (interactive) | |
ac2e902d JB |
290 | (if hexl-in-save-buffer nil |
291 | (set-buffer-modified-p (if (buffer-modified-p) | |
292 | (save-excursion | |
293 | (let ((buf (generate-new-buffer " hexl")) | |
294 | (name (buffer-name)) | |
295 | (file-name (buffer-file-name)) | |
296 | (start (point-min)) | |
297 | (end (point-max)) | |
298 | modified) | |
299 | (set-buffer buf) | |
300 | (insert-buffer-substring name start end) | |
301 | (set-buffer name) | |
302 | (dehexlify-buffer) | |
303 | ;; Prevent infinite recursion. | |
338992a5 | 304 | (let ((hexl-in-save-buffer t)) |
ac2e902d JB |
305 | (save-buffer)) |
306 | (setq modified (buffer-modified-p)) | |
307 | (delete-region (point-min) (point-max)) | |
308 | (insert-buffer-substring buf start end) | |
309 | (kill-buffer buf) | |
310 | modified)) | |
311 | (message "(No changes need to be saved)") | |
312 | nil)) | |
313 | ;; Return t to indicate we have saved t | |
314 | t)) | |
a2535589 | 315 | |
31c75fa7 | 316 | ;;;###autoload |
a2535589 JA |
317 | (defun hexl-find-file (filename) |
318 | "Edit file FILENAME in hexl-mode. | |
a2535589 | 319 | Switch to a buffer visiting file FILENAME, creating one in none exists." |
e49a45ad MB |
320 | (interactive |
321 | (list | |
322 | (let ((completion-ignored-extensions nil)) | |
323 | (read-file-name "Filename: " nil nil 'ret-must-match)))) | |
3db6aff6 | 324 | ;; Ignore the user's setting of default-major-mode. |
45e8e6e7 | 325 | (let ((default-major-mode 'fundamental-mode)) |
3db6aff6 | 326 | (find-file-literally filename)) |
a2535589 JA |
327 | (if (not (eq major-mode 'hexl-mode)) |
328 | (hexl-mode))) | |
329 | ||
330 | (defun hexl-mode-exit (&optional arg) | |
31c75fa7 | 331 | "Exit Hexl mode, returning to previous mode. |
a2535589 JA |
332 | With arg, don't unhexlify buffer." |
333 | (interactive "p") | |
334 | (if (or (eq arg 1) (not arg)) | |
335 | (let ((modified (buffer-modified-p)) | |
900014dd | 336 | (inhibit-read-only t) |
a2535589 | 337 | (original-point (1+ (hexl-current-address)))) |
a2535589 | 338 | (dehexlify-buffer) |
87b3b78a | 339 | (remove-hook 'write-contents-functions 'hexl-save-buffer t) |
a2535589 | 340 | (set-buffer-modified-p modified) |
7851eb98 EZ |
341 | (goto-char original-point) |
342 | ;; Maybe adjust point for the removed CR characters. | |
343 | (when (eq (coding-system-eol-type buffer-file-coding-system) 1) | |
344 | (setq original-point (- original-point | |
345 | (count-lines (point-min) (point)))) | |
346 | (or (bobp) (setq original-point (1+ original-point)))) | |
a2535589 | 347 | (goto-char original-point))) |
0e4889b2 RS |
348 | |
349 | (remove-hook 'after-revert-hook 'hexl-after-revert-hook t) | |
350 | (remove-hook 'change-major-mode-hook 'hexl-maybe-dehexlify-buffer t) | |
8e7df2e6 SE |
351 | (remove-hook 'post-command-hook 'hexl-follow-ascii-find t) |
352 | (setq hexl-ascii-overlay nil) | |
0e4889b2 | 353 | |
0e4889b2 | 354 | (setq require-final-newline hexl-mode-old-require-final-newline) |
a2535589 | 355 | (setq mode-name hexl-mode-old-mode-name) |
87b3b78a | 356 | (setq isearch-search-fun-function hexl-mode-old-isearch-search-fun-function) |
a2535589 | 357 | (use-local-map hexl-mode-old-local-map) |
0e4889b2 | 358 | (set-syntax-table hexl-mode-old-syntax-table) |
a2535589 | 359 | (setq major-mode hexl-mode-old-major-mode) |
8eeac2ce RS |
360 | (force-mode-line-update)) |
361 | ||
362 | (defun hexl-maybe-dehexlify-buffer () | |
363 | "Convert a hexl format buffer to binary. | |
364 | Ask the user for confirmation." | |
365 | (if (y-or-n-p "Convert contents back to binary format? ") | |
366 | (let ((modified (buffer-modified-p)) | |
367 | (inhibit-read-only t) | |
368 | (original-point (1+ (hexl-current-address)))) | |
369 | (dehexlify-buffer) | |
87b3b78a | 370 | (remove-hook 'write-contents-functions 'hexl-save-buffer t) |
8eeac2ce RS |
371 | (set-buffer-modified-p modified) |
372 | (goto-char original-point)))) | |
a2535589 | 373 | |
6bbb008e | 374 | (defun hexl-current-address (&optional validate) |
a2535589 JA |
375 | "Return current hexl-address." |
376 | (interactive) | |
87b3b78a | 377 | (let ((current-column (- (% (- (point) (point-min) -1) 68) 11)) |
a2535589 | 378 | (hexl-address 0)) |
6bbb008e RS |
379 | (if (< current-column 0) |
380 | (if validate | |
381 | (error "Point is not on a character in the file") | |
382 | (setq current-column 0))) | |
383 | (setq hexl-address | |
87b3b78a | 384 | (+ (* (/ (- (point) (point-min) -1) 68) 16) |
6bbb008e RS |
385 | (if (>= current-column 41) |
386 | (- current-column 41) | |
387 | (/ (- current-column (/ current-column 5)) 2)))) | |
48f56596 | 388 | (when (interactive-p) |
01ff9136 | 389 | (message "Current address is %d/0x%08x" hexl-address hexl-address)) |
a2535589 JA |
390 | hexl-address)) |
391 | ||
01ff9136 MY |
392 | (defun hexl-print-current-point-info () |
393 | "Return current hexl-address in string. | |
394 | This function is indented to be used as eldoc callback." | |
395 | (let ((addr (hexl-current-address))) | |
396 | (format "Current address is %d/0x%08x" addr addr))) | |
397 | ||
a2535589 | 398 | (defun hexl-address-to-marker (address) |
059c2e18 | 399 | "Return buffer position for ADDRESS." |
a2535589 | 400 | (interactive "nAddress: ") |
87b3b78a | 401 | (+ (* (/ address 16) 68) 10 (point-min) (/ (* (% address 16) 5) 2))) |
a2535589 JA |
402 | |
403 | (defun hexl-goto-address (address) | |
404 | "Goto hexl-mode (decimal) address ADDRESS. | |
a2535589 JA |
405 | Signal error if ADDRESS out of range." |
406 | (interactive "nAddress: ") | |
407 | (if (or (< address 0) (> address hexl-max-address)) | |
19e31f7c | 408 | (error "Out of hexl region")) |
a2535589 JA |
409 | (goto-char (hexl-address-to-marker address))) |
410 | ||
411 | (defun hexl-goto-hex-address (hex-address) | |
4c8c7ae9 | 412 | "Go to hexl-mode address (hex string) HEX-ADDRESS. |
a2535589 JA |
413 | Signal error if HEX-ADDRESS is out of range." |
414 | (interactive "sHex Address: ") | |
415 | (hexl-goto-address (hexl-hex-string-to-integer hex-address))) | |
416 | ||
417 | (defun hexl-hex-string-to-integer (hex-string) | |
418 | "Return decimal integer for HEX-STRING." | |
419 | (interactive "sHex number: ") | |
420 | (let ((hex-num 0)) | |
421 | (while (not (equal hex-string "")) | |
422 | (setq hex-num (+ (* hex-num 16) | |
423 | (hexl-hex-char-to-integer (string-to-char hex-string)))) | |
424 | (setq hex-string (substring hex-string 1))) | |
425 | hex-num)) | |
426 | ||
427 | (defun hexl-octal-string-to-integer (octal-string) | |
428 | "Return decimal integer for OCTAL-STRING." | |
429 | (interactive "sOctal number: ") | |
430 | (let ((oct-num 0)) | |
431 | (while (not (equal octal-string "")) | |
432 | (setq oct-num (+ (* oct-num 8) | |
433 | (hexl-oct-char-to-integer | |
434 | (string-to-char octal-string)))) | |
435 | (setq octal-string (substring octal-string 1))) | |
436 | oct-num)) | |
437 | ||
438 | ;; move point functions | |
439 | ||
440 | (defun hexl-backward-char (arg) | |
441 | "Move to left ARG bytes (right if ARG negative) in hexl-mode." | |
442 | (interactive "p") | |
443 | (hexl-goto-address (- (hexl-current-address) arg))) | |
444 | ||
445 | (defun hexl-forward-char (arg) | |
446 | "Move right ARG bytes (left if ARG negative) in hexl-mode." | |
447 | (interactive "p") | |
448 | (hexl-goto-address (+ (hexl-current-address) arg))) | |
449 | ||
450 | (defun hexl-backward-short (arg) | |
451 | "Move to left ARG shorts (right if ARG negative) in hexl-mode." | |
452 | (interactive "p") | |
453 | (hexl-goto-address (let ((address (hexl-current-address))) | |
454 | (if (< arg 0) | |
455 | (progn | |
456 | (setq arg (- arg)) | |
457 | (while (> arg 0) | |
458 | (if (not (equal address (logior address 3))) | |
459 | (if (> address hexl-max-address) | |
460 | (progn | |
461 | (message "End of buffer.") | |
462 | (setq address hexl-max-address)) | |
463 | (setq address (logior address 3))) | |
464 | (if (> address hexl-max-address) | |
465 | (progn | |
466 | (message "End of buffer.") | |
467 | (setq address hexl-max-address)) | |
468 | (setq address (+ address 4)))) | |
469 | (setq arg (1- arg))) | |
470 | (if (> address hexl-max-address) | |
471 | (progn | |
472 | (message "End of buffer.") | |
473 | (setq address hexl-max-address)) | |
474 | (setq address (logior address 3)))) | |
475 | (while (> arg 0) | |
476 | (if (not (equal address (logand address -4))) | |
477 | (setq address (logand address -4)) | |
478 | (if (not (equal address 0)) | |
479 | (setq address (- address 4)) | |
480 | (message "Beginning of buffer."))) | |
481 | (setq arg (1- arg)))) | |
482 | address))) | |
483 | ||
484 | (defun hexl-forward-short (arg) | |
485 | "Move right ARG shorts (left if ARG negative) in hexl-mode." | |
486 | (interactive "p") | |
487 | (hexl-backward-short (- arg))) | |
488 | ||
489 | (defun hexl-backward-word (arg) | |
490 | "Move to left ARG words (right if ARG negative) in hexl-mode." | |
491 | (interactive "p") | |
492 | (hexl-goto-address (let ((address (hexl-current-address))) | |
493 | (if (< arg 0) | |
494 | (progn | |
495 | (setq arg (- arg)) | |
496 | (while (> arg 0) | |
497 | (if (not (equal address (logior address 7))) | |
498 | (if (> address hexl-max-address) | |
499 | (progn | |
500 | (message "End of buffer.") | |
501 | (setq address hexl-max-address)) | |
502 | (setq address (logior address 7))) | |
503 | (if (> address hexl-max-address) | |
504 | (progn | |
505 | (message "End of buffer.") | |
506 | (setq address hexl-max-address)) | |
507 | (setq address (+ address 8)))) | |
508 | (setq arg (1- arg))) | |
509 | (if (> address hexl-max-address) | |
510 | (progn | |
511 | (message "End of buffer.") | |
512 | (setq address hexl-max-address)) | |
513 | (setq address (logior address 7)))) | |
514 | (while (> arg 0) | |
515 | (if (not (equal address (logand address -8))) | |
516 | (setq address (logand address -8)) | |
517 | (if (not (equal address 0)) | |
518 | (setq address (- address 8)) | |
519 | (message "Beginning of buffer."))) | |
520 | (setq arg (1- arg)))) | |
521 | address))) | |
522 | ||
523 | (defun hexl-forward-word (arg) | |
524 | "Move right ARG words (left if ARG negative) in hexl-mode." | |
525 | (interactive "p") | |
526 | (hexl-backward-word (- arg))) | |
527 | ||
528 | (defun hexl-previous-line (arg) | |
4c8c7ae9 JB |
529 | "Move vertically up ARG lines [16 bytes] (down if ARG negative) in hexl-mode. |
530 | If there is byte at the target address move to the last byte in that line." | |
a2535589 JA |
531 | (interactive "p") |
532 | (hexl-next-line (- arg))) | |
533 | ||
534 | (defun hexl-next-line (arg) | |
4c8c7ae9 JB |
535 | "Move vertically down ARG lines [16 bytes] (up if ARG negative) in hexl-mode. |
536 | If there is no byte at the target address move to the last byte in that line." | |
a2535589 | 537 | (interactive "p") |
e8a57935 | 538 | (hexl-goto-address (let ((address (+ (hexl-current-address) (* arg 16)))) |
a2535589 JA |
539 | (if (and (< arg 0) (< address 0)) |
540 | (progn (message "Out of hexl region.") | |
541 | (setq address | |
542 | (% (hexl-current-address) 16))) | |
543 | (if (and (> address hexl-max-address) | |
544 | (< (% hexl-max-address 16) (% address 16))) | |
545 | (setq address hexl-max-address) | |
546 | (if (> address hexl-max-address) | |
547 | (progn (message "Out of hexl region.") | |
548 | (setq | |
549 | address | |
550 | (+ (logand hexl-max-address -16) | |
551 | (% (hexl-current-address) 16))))))) | |
552 | address))) | |
553 | ||
554 | (defun hexl-beginning-of-buffer (arg) | |
4c8c7ae9 JB |
555 | "Move to the beginning of the hexl buffer. |
556 | Leaves `hexl-mark' at previous position. | |
557 | With prefix arg N, puts point N bytes of the way from the true beginning." | |
a2535589 JA |
558 | (interactive "p") |
559 | (push-mark (point)) | |
560 | (hexl-goto-address (+ 0 (1- arg)))) | |
561 | ||
562 | (defun hexl-end-of-buffer (arg) | |
4c8c7ae9 | 563 | "Go to `hexl-max-address' minus ARG." |
a2535589 JA |
564 | (interactive "p") |
565 | (push-mark (point)) | |
566 | (hexl-goto-address (- hexl-max-address (1- arg)))) | |
567 | ||
568 | (defun hexl-beginning-of-line () | |
569 | "Goto beginning of line in hexl mode." | |
570 | (interactive) | |
571 | (goto-char (+ (* (/ (point) 68) 68) 11))) | |
572 | ||
573 | (defun hexl-end-of-line () | |
574 | "Goto end of line in hexl mode." | |
575 | (interactive) | |
576 | (hexl-goto-address (let ((address (logior (hexl-current-address) 15))) | |
577 | (if (> address hexl-max-address) | |
578 | (setq address hexl-max-address)) | |
579 | address))) | |
580 | ||
581 | (defun hexl-scroll-down (arg) | |
582 | "Scroll hexl buffer window upward ARG lines; or near full window if no ARG." | |
583 | (interactive "P") | |
584 | (if (null arg) | |
585 | (setq arg (1- (window-height))) | |
586 | (setq arg (prefix-numeric-value arg))) | |
587 | (hexl-scroll-up (- arg))) | |
588 | ||
589 | (defun hexl-scroll-up (arg) | |
d565f6aa EZ |
590 | "Scroll hexl buffer window upward ARG lines; or near full window if no ARG. |
591 | If there's no byte at the target address, move to the first or last line." | |
a2535589 JA |
592 | (interactive "P") |
593 | (if (null arg) | |
594 | (setq arg (1- (window-height))) | |
595 | (setq arg (prefix-numeric-value arg))) | |
d565f6aa EZ |
596 | (let* ((movement (* arg 16)) |
597 | (address (hexl-current-address)) | |
598 | (dest (+ address movement))) | |
599 | (cond | |
600 | ;; If possible, try to stay at the same offset from the beginning | |
601 | ;; of the 16-byte group, even if we move to the first or last | |
602 | ;; group. | |
603 | ((and (> dest hexl-max-address) | |
604 | (>= (% hexl-max-address 16) (% address 16))) | |
605 | (setq dest (+ (logand hexl-max-address -16) (% address 16)))) | |
606 | ((> dest hexl-max-address) | |
607 | (setq dest hexl-max-address)) | |
608 | ((< dest 0) | |
609 | (setq dest (% address 16)))) | |
610 | (if (/= dest (+ address movement)) | |
611 | (message "Out of hexl region.")) | |
612 | (hexl-goto-address dest) | |
613 | (recenter 0))) | |
a2535589 JA |
614 | |
615 | (defun hexl-beginning-of-1k-page () | |
65e5f4bc | 616 | "Go to beginning of 1k boundary." |
a2535589 JA |
617 | (interactive) |
618 | (hexl-goto-address (logand (hexl-current-address) -1024))) | |
619 | ||
620 | (defun hexl-end-of-1k-page () | |
65e5f4bc | 621 | "Go to end of 1k boundary." |
a2535589 JA |
622 | (interactive) |
623 | (hexl-goto-address (let ((address (logior (hexl-current-address) 1023))) | |
624 | (if (> address hexl-max-address) | |
625 | (setq address hexl-max-address)) | |
626 | address))) | |
627 | ||
628 | (defun hexl-beginning-of-512b-page () | |
65e5f4bc | 629 | "Go to beginning of 512 byte boundary." |
a2535589 JA |
630 | (interactive) |
631 | (hexl-goto-address (logand (hexl-current-address) -512))) | |
632 | ||
633 | (defun hexl-end-of-512b-page () | |
65e5f4bc | 634 | "Go to end of 512 byte boundary." |
a2535589 JA |
635 | (interactive) |
636 | (hexl-goto-address (let ((address (logior (hexl-current-address) 511))) | |
637 | (if (> address hexl-max-address) | |
638 | (setq address hexl-max-address)) | |
639 | address))) | |
640 | ||
641 | (defun hexl-quoted-insert (arg) | |
642 | "Read next input character and insert it. | |
02aec07b EZ |
643 | Useful for inserting control characters and non-ASCII characters given their |
644 | numerical code. | |
645 | You may also type octal digits, to insert a character with that code." | |
a2535589 | 646 | (interactive "p") |
02aec07b | 647 | (hexl-insert-multibyte-char (read-quoted-char) arg)) |
a2535589 JA |
648 | |
649 | ;00000000: 0011 2233 4455 6677 8899 aabb ccdd eeff 0123456789ABCDEF | |
650 | ||
f4e3d4eb | 651 | ;;;###autoload |
a2535589 | 652 | (defun hexlify-buffer () |
aa3757b8 RS |
653 | "Convert a binary buffer to hexl format. |
654 | This discards the buffer's undo information." | |
a2535589 | 655 | (interactive) |
aa3757b8 RS |
656 | (and buffer-undo-list |
657 | (or (y-or-n-p "Converting to hexl format discards undo info; ok? ") | |
658 | (error "Aborted"))) | |
659 | (setq buffer-undo-list nil) | |
a749e5e5 EZ |
660 | ;; Don't decode text in the ASCII part of `hexl' program output. |
661 | (let ((coding-system-for-read 'raw-text) | |
0716afa2 | 662 | (coding-system-for-write buffer-file-coding-system) |
aa3757b8 | 663 | (buffer-undo-list t)) |
b8c49a19 SM |
664 | (apply 'call-process-region (point-min) (point-max) |
665 | (expand-file-name hexl-program exec-directory) | |
666 | t t nil (split-string hexl-options)) | |
9fd76d04 MY |
667 | (save-excursion |
668 | (goto-char (point-min)) | |
669 | (while (re-search-forward "^[0-9a-f]+:" nil t) | |
670 | (put-text-property (match-beginning 0) (match-end 0) | |
671 | 'font-lock-face 'hexl-address-area)) | |
672 | (goto-char (point-min)) | |
673 | (while (re-search-forward " \\(.+$\\)" nil t) | |
674 | (put-text-property (match-beginning 1) (match-end 1) | |
675 | 'font-lock-face 'hexl-ascii-area))) | |
059c2e18 PR |
676 | (if (> (point) (hexl-address-to-marker hexl-max-address)) |
677 | (hexl-goto-address hexl-max-address)))) | |
a2535589 JA |
678 | |
679 | (defun dehexlify-buffer () | |
aa3757b8 RS |
680 | "Convert a hexl format buffer to binary. |
681 | This discards the buffer's undo information." | |
a2535589 | 682 | (interactive) |
aa3757b8 RS |
683 | (and buffer-undo-list |
684 | (or (y-or-n-p "Converting from hexl format discards undo info; ok? ") | |
685 | (error "Aborted"))) | |
686 | (setq buffer-undo-list nil) | |
a749e5e5 | 687 | (let ((coding-system-for-write 'raw-text) |
0716afa2 | 688 | (coding-system-for-read buffer-file-coding-system) |
aa3757b8 | 689 | (buffer-undo-list t)) |
b8c49a19 SM |
690 | (apply 'call-process-region (point-min) (point-max) |
691 | (expand-file-name hexl-program exec-directory) | |
692 | t t nil "-de" (split-string hexl-options)))) | |
a2535589 JA |
693 | |
694 | (defun hexl-char-after-point () | |
695 | "Return char for ASCII hex digits at point." | |
686fc9ab RS |
696 | (hexl-htoi (char-after (point)) |
697 | (char-after (1+ (point))))) | |
a2535589 JA |
698 | |
699 | (defun hexl-htoi (lh rh) | |
700 | "Hex (char) LH (char) RH to integer." | |
701 | (+ (* (hexl-hex-char-to-integer lh) 16) | |
702 | (hexl-hex-char-to-integer rh))) | |
703 | ||
704 | (defun hexl-hex-char-to-integer (character) | |
705 | "Take a char and return its value as if it was a hex digit." | |
706 | (if (and (>= character ?0) (<= character ?9)) | |
707 | (- character ?0) | |
708 | (let ((ch (logior character 32))) | |
709 | (if (and (>= ch ?a) (<= ch ?f)) | |
710 | (- ch (- ?a 10)) | |
19e31f7c | 711 | (error "Invalid hex digit `%c'" ch))))) |
a2535589 JA |
712 | |
713 | (defun hexl-oct-char-to-integer (character) | |
714 | "Take a char and return its value as if it was a octal digit." | |
715 | (if (and (>= character ?0) (<= character ?7)) | |
716 | (- character ?0) | |
19e31f7c | 717 | (error "Invalid octal digit `%c'" character))) |
a2535589 JA |
718 | |
719 | (defun hexl-printable-character (ch) | |
720 | "Return a displayable string for character CH." | |
721 | (format "%c" (if hexl-iso | |
722 | (if (or (< ch 32) (and (>= ch 127) (< ch 160))) | |
723 | 46 | |
724 | ch) | |
725 | (if (or (< ch 32) (>= ch 127)) | |
726 | 46 | |
727 | ch)))) | |
728 | ||
02aec07b EZ |
729 | (defun hexl-insert-multibyte-char (ch num) |
730 | "Insert a possibly multibyte character CH NUM times. | |
731 | ||
732 | Non-ASCII characters are first encoded with `buffer-file-coding-system', | |
733 | and their encoded form is inserted byte by byte." | |
734 | (let ((charset (char-charset ch)) | |
735 | (coding (if (or (null buffer-file-coding-system) | |
736 | ;; coding-system-type equals t means undecided. | |
737 | (eq (coding-system-type buffer-file-coding-system) t)) | |
738 | default-buffer-file-coding-system | |
739 | buffer-file-coding-system))) | |
740 | (cond ((and (> ch 0) (< ch 256)) | |
741 | (hexl-insert-char ch num)) | |
742 | ((eq charset 'unknown) | |
743 | (error | |
165b4283 | 744 | "0x%x -- invalid character code; use \\[hexl-insert-hex-string]" |
02aec07b EZ |
745 | ch)) |
746 | (t | |
747 | (let ((encoded (encode-coding-char ch coding)) | |
748 | (internal (string-as-unibyte (char-to-string ch))) | |
749 | internal-hex) | |
750 | ;; If encode-coding-char returns nil, it means our character | |
751 | ;; cannot be safely encoded with buffer-file-coding-system. | |
752 | ;; In that case, we offer to insert the internal representation | |
753 | ;; of that character, byte by byte. | |
754 | (when (null encoded) | |
755 | (setq internal-hex | |
756 | (mapconcat (function (lambda (c) (format "%x" c))) | |
757 | internal " ")) | |
758 | (if (yes-or-no-p | |
759 | (format | |
760 | "Insert char 0x%x's internal representation \"%s\"? " | |
761 | ch internal-hex)) | |
762 | (setq encoded internal) | |
763 | (error | |
165b4283 | 764 | "Can't encode `0x%x' with this buffer's coding system; try \\[hexl-insert-hex-string]" |
02aec07b EZ |
765 | ch))) |
766 | (while (> num 0) | |
767 | (mapc | |
768 | (function (lambda (c) (hexl-insert-char c 1))) encoded) | |
769 | (setq num (1- num)))))))) | |
770 | ||
a2535589 | 771 | (defun hexl-self-insert-command (arg) |
02aec07b EZ |
772 | "Insert this character. |
773 | Interactively, with a numeric argument, insert this character that many times. | |
774 | ||
775 | Non-ASCII characters are first encoded with `buffer-file-coding-system', | |
776 | and their encoded form is inserted byte by byte." | |
a2535589 | 777 | (interactive "p") |
02aec07b | 778 | (hexl-insert-multibyte-char last-command-char arg)) |
a2535589 JA |
779 | |
780 | (defun hexl-insert-char (ch num) | |
02aec07b EZ |
781 | "Insert the character CH NUM times in a hexl buffer. |
782 | ||
783 | CH must be a unibyte character whose value is between 0 and 255." | |
784 | (if (or (< ch 0) (> ch 255)) | |
45ad49ba | 785 | (error "Invalid character 0x%x -- must be in the range [0..255]" ch)) |
6bbb008e | 786 | (let ((address (hexl-current-address t))) |
a2535589 | 787 | (while (> num 0) |
6bbb008e RS |
788 | (let ((hex-position |
789 | (+ (* (/ address 16) 68) | |
87b3b78a | 790 | 10 (point-min) |
6bbb008e RS |
791 | (* 2 (% address 16)) |
792 | (/ (% address 16) 2))) | |
793 | (ascii-position | |
87b3b78a | 794 | (+ (* (/ address 16) 68) 51 (point-min) (% address 16))) |
6bbb008e RS |
795 | at-ascii-position) |
796 | (if (= (point) ascii-position) | |
797 | (setq at-ascii-position t)) | |
798 | (goto-char hex-position) | |
799 | (delete-char 2) | |
800 | (insert (format "%02x" ch)) | |
801 | (goto-char ascii-position) | |
802 | (delete-char 1) | |
803 | (insert (hexl-printable-character ch)) | |
804 | (or (eq address hexl-max-address) | |
805 | (setq address (1+ address))) | |
806 | (hexl-goto-address address) | |
807 | (if at-ascii-position | |
808 | (progn | |
809 | (beginning-of-line) | |
810 | (forward-char 51) | |
811 | (forward-char (% address 16))))) | |
a2535589 JA |
812 | (setq num (1- num))))) |
813 | ||
814 | ;; hex conversion | |
815 | ||
816 | (defun hexl-insert-hex-char (arg) | |
02aec07b | 817 | "Insert a character given by its hexadecimal code ARG times at point." |
a2535589 JA |
818 | (interactive "p") |
819 | (let ((num (hexl-hex-string-to-integer (read-string "Hex number: ")))) | |
02aec07b | 820 | (if (< num 0) |
19e31f7c | 821 | (error "Hex number out of range") |
02aec07b | 822 | (hexl-insert-multibyte-char num arg)))) |
a2535589 | 823 | |
9f6bff44 GM |
824 | (defun hexl-insert-hex-string (str arg) |
825 | "Insert hexadecimal string STR at point ARG times. | |
826 | Embedded whitespace, dashes, and periods in the string are ignored." | |
827 | (interactive "sHex string: \np") | |
828 | (setq str (replace-regexp-in-string "[- \t.]" "" str)) | |
829 | (let ((chars '())) | |
830 | (let ((len (length str)) | |
831 | (idx 0)) | |
832 | (if (eq (logand len 1) 1) | |
833 | (let ((num (hexl-hex-string-to-integer (substring str 0 1)))) | |
834 | (setq chars (cons num chars)) | |
835 | (setq idx 1))) | |
836 | (while (< idx len) | |
837 | (let* ((nidx (+ idx 2)) | |
838 | (num (hexl-hex-string-to-integer (substring str idx nidx)))) | |
839 | (setq chars (cons num chars)) | |
840 | (setq idx nidx)))) | |
841 | (setq chars (nreverse chars)) | |
842 | (while (> arg 0) | |
843 | (let ((chars chars)) | |
844 | (while chars | |
845 | (hexl-insert-char (car chars) 1) | |
846 | (setq chars (cdr chars)))) | |
847 | (setq arg (- arg 1))))) | |
848 | ||
a2535589 | 849 | (defun hexl-insert-decimal-char (arg) |
02aec07b | 850 | "Insert a character given by its decimal code ARG times at point." |
a2535589 JA |
851 | (interactive "p") |
852 | (let ((num (string-to-int (read-string "Decimal Number: ")))) | |
02aec07b | 853 | (if (< num 0) |
19e31f7c | 854 | (error "Decimal number out of range") |
02aec07b | 855 | (hexl-insert-multibyte-char num arg)))) |
a2535589 JA |
856 | |
857 | (defun hexl-insert-octal-char (arg) | |
02aec07b | 858 | "Insert a character given by its octal code ARG times at point." |
a2535589 JA |
859 | (interactive "p") |
860 | (let ((num (hexl-octal-string-to-integer (read-string "Octal Number: ")))) | |
02aec07b | 861 | (if (< num 0) |
19e31f7c | 862 | (error "Decimal number out of range") |
02aec07b | 863 | (hexl-insert-multibyte-char num arg)))) |
a2535589 | 864 | |
db6c5b92 SE |
865 | (defun hexl-follow-ascii (&optional arg) |
866 | "Toggle following ASCII in Hexl buffers. | |
867 | With prefix ARG, turn on following if and only if ARG is positive. | |
868 | When following is enabled, the ASCII character corresponding to the | |
869 | element under the point is highlighted. | |
870 | Customize the variable `hexl-follow-ascii' to disable this feature." | |
871 | (interactive "P") | |
71296446 | 872 | (let ((on-p (if arg |
db6c5b92 SE |
873 | (> (prefix-numeric-value arg) 0) |
874 | (not hexl-ascii-overlay)))) | |
875 | ||
db6c5b92 SE |
876 | (if on-p |
877 | ;; turn it on | |
878 | (if (not hexl-ascii-overlay) | |
879 | (progn | |
880 | (setq hexl-ascii-overlay (make-overlay 1 1) | |
881 | hexl-follow-ascii t) | |
882 | (overlay-put hexl-ascii-overlay 'face 'highlight) | |
883 | (add-hook 'post-command-hook 'hexl-follow-ascii-find nil t))) | |
884 | ;; turn it off | |
885 | (if hexl-ascii-overlay | |
886 | (progn | |
887 | (delete-overlay hexl-ascii-overlay) | |
888 | (setq hexl-ascii-overlay nil | |
889 | hexl-follow-ascii nil) | |
890 | (remove-hook 'post-command-hook 'hexl-follow-ascii-find t) | |
891 | ))))) | |
892 | ||
9fd76d04 MY |
893 | (defun hexl-activate-ruler () |
894 | "Activate `ruler-mode'" | |
895 | (require 'ruler-mode) | |
896 | (set (make-local-variable 'ruler-mode-ruler-function) | |
897 | 'hexl-mode-ruler) | |
898 | (ruler-mode 1)) | |
899 | ||
900 | (defun hexl-follow-line () | |
901 | "Activate `hl-line-mode'" | |
902 | (require 'frame) | |
903 | (require 'fringe) | |
904 | (require 'hl-line) | |
905 | (set (make-local-variable 'hl-line-range-function) | |
906 | 'hexl-highlight-line-range) | |
907 | (set (make-local-variable 'hl-line-face) | |
908 | 'highlight) | |
909 | (hl-line-mode 1)) | |
910 | ||
911 | (defun hexl-highlight-line-range () | |
912 | "Return the range of address area for the point. | |
913 | This function is assumed to be used as call back function for `hl-line-mode'." | |
914 | (cons | |
915 | (line-beginning-position) | |
916 | ;; 9 stands for (length "87654321:") | |
917 | (+ (line-beginning-position) 9))) | |
918 | ||
db6c5b92 SE |
919 | (defun hexl-follow-ascii-find () |
920 | "Find and highlight the ASCII element corresponding to current point." | |
d565f6aa | 921 | (let ((pos (+ 51 |
db6c5b92 SE |
922 | (- (point) (current-column)) |
923 | (mod (hexl-current-address) 16)))) | |
924 | (move-overlay hexl-ascii-overlay pos (1+ pos)) | |
925 | )) | |
926 | ||
9fd76d04 MY |
927 | (defun hexl-mode-ruler () |
928 | "Return a string ruler for hexl mode." | |
929 | (let* ((highlight (mod (hexl-current-address) 16)) | |
930 | (s "87654321 0011 2233 4455 6677 8899 aabb ccdd eeff 0123456789abcdef") | |
931 | (pos 0) | |
932 | (spaces (+ (scroll-bar-columns 'left) | |
933 | (fringe-columns 'left) | |
934 | (or (car (window-margins)) 0)))) | |
935 | (set-text-properties 0 (length s) nil s) | |
936 | ;; Turn spaces in the header into stretch specs so they work | |
937 | ;; regardless of the header-line face. | |
938 | (while (string-match "[ \t]+" s pos) | |
939 | (setq pos (match-end 0)) | |
940 | (put-text-property (match-beginning 0) pos 'display | |
941 | ;; Assume fixed-size chars | |
942 | `(space :align-to (+ (scroll-bar . left) | |
943 | left-fringe left-margin | |
944 | ,pos)) | |
945 | s)) | |
946 | ;; Highlight the current column. | |
947 | (put-text-property (+ 10 (/ (* 5 highlight) 2)) | |
948 | (+ 12 (/ (* 5 highlight) 2)) | |
949 | 'face 'highlight s) | |
950 | ;; Highlight the current ascii column | |
951 | (put-text-property (+ 12 39 highlight) (+ 12 40 highlight) | |
952 | 'face 'highlight s) | |
953 | ;; Add the leading space. | |
954 | (concat (propertize (make-string (floor spaces) ? ) | |
955 | 'display `(space :width ,spaces)) | |
956 | s))) | |
957 | ||
a2535589 JA |
958 | ;; startup stuff. |
959 | ||
960 | (if hexl-mode-map | |
961 | nil | |
4b7dd7e2 | 962 | (setq hexl-mode-map (make-keymap)) |
02aec07b EZ |
963 | ;; Make all self-inserting keys go through hexl-self-insert-command, |
964 | ;; because we need to convert them to unibyte characters before | |
965 | ;; inserting them into the buffer. | |
340c4d85 | 966 | (define-key hexl-mode-map [remap self-insert-command] 'hexl-self-insert-command) |
ae2d451b | 967 | |
d9c8518d | 968 | (define-key hexl-mode-map "\C-m" 'hexl-self-insert-command) |
ae2d451b RS |
969 | (define-key hexl-mode-map [left] 'hexl-backward-char) |
970 | (define-key hexl-mode-map [right] 'hexl-forward-char) | |
971 | (define-key hexl-mode-map [up] 'hexl-previous-line) | |
972 | (define-key hexl-mode-map [down] 'hexl-next-line) | |
973 | (define-key hexl-mode-map [M-left] 'hexl-backward-short) | |
974 | (define-key hexl-mode-map [M-right] 'hexl-forward-short) | |
975 | (define-key hexl-mode-map [next] 'hexl-scroll-up) | |
976 | (define-key hexl-mode-map [prior] 'hexl-scroll-down) | |
d565f6aa EZ |
977 | (define-key hexl-mode-map [home] 'hexl-beginning-of-line) |
978 | (define-key hexl-mode-map [end] 'hexl-end-of-line) | |
979 | (define-key hexl-mode-map [C-home] 'hexl-beginning-of-buffer) | |
980 | (define-key hexl-mode-map [C-end] 'hexl-end-of-buffer) | |
ae2d451b RS |
981 | (define-key hexl-mode-map [deletechar] 'undefined) |
982 | (define-key hexl-mode-map [deleteline] 'undefined) | |
983 | (define-key hexl-mode-map [insertline] 'undefined) | |
984 | (define-key hexl-mode-map [S-delete] 'undefined) | |
985 | (define-key hexl-mode-map "\177" 'undefined) | |
986 | ||
987 | (define-key hexl-mode-map "\C-a" 'hexl-beginning-of-line) | |
988 | (define-key hexl-mode-map "\C-b" 'hexl-backward-char) | |
989 | (define-key hexl-mode-map "\C-d" 'undefined) | |
990 | (define-key hexl-mode-map "\C-e" 'hexl-end-of-line) | |
991 | (define-key hexl-mode-map "\C-f" 'hexl-forward-char) | |
992 | ||
993 | (if (not (eq (key-binding (char-to-string help-char)) 'help-command)) | |
994 | (define-key hexl-mode-map (char-to-string help-char) 'undefined)) | |
995 | ||
ae2d451b | 996 | (define-key hexl-mode-map "\C-k" 'undefined) |
ae2d451b RS |
997 | (define-key hexl-mode-map "\C-n" 'hexl-next-line) |
998 | (define-key hexl-mode-map "\C-o" 'undefined) | |
999 | (define-key hexl-mode-map "\C-p" 'hexl-previous-line) | |
1000 | (define-key hexl-mode-map "\C-q" 'hexl-quoted-insert) | |
1001 | (define-key hexl-mode-map "\C-t" 'undefined) | |
1002 | (define-key hexl-mode-map "\C-v" 'hexl-scroll-up) | |
1003 | (define-key hexl-mode-map "\C-w" 'undefined) | |
1004 | (define-key hexl-mode-map "\C-y" 'undefined) | |
1005 | ||
02aec07b EZ |
1006 | (fset 'hexl-ESC-prefix (copy-keymap 'ESC-prefix)) |
1007 | (define-key hexl-mode-map "\e" 'hexl-ESC-prefix) | |
ae2d451b RS |
1008 | (define-key hexl-mode-map "\e\C-a" 'hexl-beginning-of-512b-page) |
1009 | (define-key hexl-mode-map "\e\C-b" 'hexl-backward-short) | |
ae2d451b RS |
1010 | (define-key hexl-mode-map "\e\C-d" 'hexl-insert-decimal-char) |
1011 | (define-key hexl-mode-map "\e\C-e" 'hexl-end-of-512b-page) | |
1012 | (define-key hexl-mode-map "\e\C-f" 'hexl-forward-short) | |
ae2d451b RS |
1013 | (define-key hexl-mode-map "\e\C-i" 'undefined) |
1014 | (define-key hexl-mode-map "\e\C-j" 'undefined) | |
1015 | (define-key hexl-mode-map "\e\C-k" 'undefined) | |
ae2d451b | 1016 | (define-key hexl-mode-map "\e\C-o" 'hexl-insert-octal-char) |
ae2d451b | 1017 | (define-key hexl-mode-map "\e\C-q" 'undefined) |
ae2d451b | 1018 | (define-key hexl-mode-map "\e\C-t" 'undefined) |
ae2d451b | 1019 | (define-key hexl-mode-map "\e\C-x" 'hexl-insert-hex-char) |
ae2d451b RS |
1020 | (define-key hexl-mode-map "\eb" 'hexl-backward-word) |
1021 | (define-key hexl-mode-map "\ec" 'undefined) | |
1022 | (define-key hexl-mode-map "\ed" 'undefined) | |
ae2d451b RS |
1023 | (define-key hexl-mode-map "\ef" 'hexl-forward-word) |
1024 | (define-key hexl-mode-map "\eg" 'hexl-goto-hex-address) | |
ae2d451b RS |
1025 | (define-key hexl-mode-map "\ei" 'undefined) |
1026 | (define-key hexl-mode-map "\ej" 'hexl-goto-address) | |
1027 | (define-key hexl-mode-map "\ek" 'undefined) | |
1028 | (define-key hexl-mode-map "\el" 'undefined) | |
ae2d451b | 1029 | (define-key hexl-mode-map "\eq" 'undefined) |
ae2d451b RS |
1030 | (define-key hexl-mode-map "\es" 'undefined) |
1031 | (define-key hexl-mode-map "\et" 'undefined) | |
1032 | (define-key hexl-mode-map "\eu" 'undefined) | |
1033 | (define-key hexl-mode-map "\ev" 'hexl-scroll-down) | |
1034 | (define-key hexl-mode-map "\ey" 'undefined) | |
1035 | (define-key hexl-mode-map "\ez" 'undefined) | |
1036 | (define-key hexl-mode-map "\e<" 'hexl-beginning-of-buffer) | |
1037 | (define-key hexl-mode-map "\e>" 'hexl-end-of-buffer) | |
1038 | ||
02aec07b EZ |
1039 | (fset 'hexl-C-c-prefix (copy-keymap mode-specific-map)) |
1040 | (define-key hexl-mode-map "\C-c" 'hexl-C-c-prefix) | |
ae2d451b RS |
1041 | (define-key hexl-mode-map "\C-c\C-c" 'hexl-mode-exit) |
1042 | ||
02aec07b EZ |
1043 | (fset 'hexl-C-x-prefix (copy-keymap 'Control-X-prefix)) |
1044 | (define-key hexl-mode-map "\C-x" 'hexl-C-x-prefix) | |
ae2d451b RS |
1045 | (define-key hexl-mode-map "\C-x[" 'hexl-beginning-of-1k-page) |
1046 | (define-key hexl-mode-map "\C-x]" 'hexl-end-of-1k-page) | |
1047 | (define-key hexl-mode-map "\C-x\C-p" 'undefined) | |
1048 | (define-key hexl-mode-map "\C-x\C-s" 'hexl-save-buffer) | |
1049 | (define-key hexl-mode-map "\C-x\C-t" 'undefined)) | |
a2535589 | 1050 | |
19e31f7c RS |
1051 | (provide 'hexl) |
1052 | ||
ab5796a9 | 1053 | ;;; arch-tag: d5a7aa8a-9bce-480b-bcff-6c4c7ca5ea4a |
1a06eabd | 1054 | ;;; hexl.el ends here |