HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| 55535639 | 1 | ;;; hexl.el --- edit a file in a hex dump format using the hexl filter |
| e5167999 | 2 | |
| 0d30b337 | 3 | ;; Copyright (C) 1989, 1994, 1998, 2001, 2002, 2003, 2004, |
| ae940284 | 4 | ;; 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
| a2535589 | 5 | |
| 3a801d0c | 6 | ;; Author: Keith Gabryelski <ag@wheaties.ai.mit.edu> |
| b7f66977 RS |
7 | ;; Maintainer: FSF |
| 8 | ;; Keywords: data | |
| 3a801d0c | 9 | |
| a2535589 JA |
10 | ;; This file is part of GNU Emacs. |
| 11 | ||
| eb3fa2cf | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
| a2535589 | 13 | ;; it under the terms of the GNU General Public License as published by |
| eb3fa2cf GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
| 15 | ;; (at your option) any later version. | |
| a2535589 JA |
16 | |
| 17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 20 | ;; GNU General Public License for more details. | |
| 21 | ||
| 22 | ;; You should have received a copy of the GNU General Public License | |
| eb3fa2cf | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| a2535589 | 24 | |
| e5167999 ER |
25 | ;;; Commentary: |
| 26 | ||
| e41b2db1 ER |
27 | ;; This package implements a major mode for editing binary files. It uses |
| 28 | ;; a program called hexl, supplied with the GNU Emacs distribution, that | |
| 29 | ;; can filter a binary into an editable format or from the format back into | |
| 30 | ;; binary. For full instructions, invoke `hexl-mode' on an empty buffer and | |
| a0164df5 | 31 | ;; do M-x `describe-mode'. |
| e41b2db1 | 32 | ;; |
| a0164df5 | 33 | ;; NOTE: Remember to change `hexl-program' or `hexl-options' if needed. |
| a2535589 JA |
34 | ;; |
| 35 | ;; Currently hexl only supports big endian hex output with 16 bit | |
| 36 | ;; grouping. | |
| 37 | ;; | |
| 38 | ;; -iso in `hexl-options' will allow iso characters to display in the | |
| 37dc4767 | 39 | ;; ASCII region of the screen (if your Emacs supports this) instead of |
| a2535589 JA |
40 | ;; changing them to dots. |
| 41 | ||
| e5167999 ER |
42 | ;;; Code: |
| 43 | ||
| 01ff9136 MY |
44 | (require 'eldoc) |
| 45 | ||
| a2535589 JA |
46 | ;; |
| 47 | ;; vars here | |
| 48 | ;; | |
| 49 | ||
| 00ed33e7 RS |
50 | (defgroup hexl nil |
| 51 | "Edit a file in a hex dump format using the hexl filter." | |
| 52 | :group 'data) | |
| 53 | ||
| 54 | ||
| 55 | (defcustom hexl-program "hexl" | |
| 65e5f4bc | 56 | "The program that will hexlify and dehexlify its stdin. |
| 57f07931 | 57 | `hexl-program' will always be concatenated with `hexl-options' |
| 00ed33e7 RS |
58 | and \"-de\" when dehexlifying a buffer." |
| 59 | :type 'string | |
| 60 | :group 'hexl) | |
| a2535589 | 61 | |
| 00ed33e7 | 62 | (defcustom hexl-iso "" |
| 37dc4767 | 63 | "If your Emacs can handle ISO characters, this should be set to |
| 00ed33e7 RS |
64 | \"-iso\" otherwise it should be \"\"." |
| 65 | :type 'string | |
| 66 | :group 'hexl) | |
| a2535589 | 67 | |
| 00ed33e7 | 68 | (defcustom hexl-options (format "-hex %s" hexl-iso) |
| b8c49a19 SM |
69 | "Space separated options to `hexl-program' that suit your needs. |
| 70 | Quoting cannot be used, so the arguments cannot themselves contain spaces." | |
| 00ed33e7 RS |
71 | :type 'string |
| 72 | :group 'hexl) | |
| a2535589 | 73 | |
| db6c5b92 SE |
74 | (defcustom hexl-follow-ascii t |
| 75 | "If non-nil then highlight the ASCII character corresponding to point." | |
| 76 | :type 'boolean | |
| cd32a7ba DN |
77 | :group 'hexl |
| 78 | :version "20.3") | |
| db6c5b92 | 79 | |
| 9fd76d04 MY |
80 | (defcustom hexl-mode-hook '(hexl-follow-line hexl-activate-ruler) |
| 81 | "Normal hook run when entering Hexl mode." | |
| 82 | :type 'hook | |
| 83 | :options '(hexl-follow-line hexl-activate-ruler turn-on-eldoc-mode) | |
| 84 | :group 'hexl) | |
| 85 | ||
| 2d77d354 | 86 | (defface hexl-address-region |
| 9fd76d04 | 87 | '((t (:inherit header-line))) |
| 5232b4cd | 88 | "Face used in address area of hexl-mode buffer." |
| 9fd76d04 MY |
89 | :group 'hexl) |
| 90 | ||
| 2d77d354 | 91 | (defface hexl-ascii-region |
| 9fd76d04 | 92 | '((t (:inherit header-line))) |
| 5232b4cd | 93 | "Face used in ascii area of hexl-mode buffer." |
| 9fd76d04 MY |
94 | :group 'hexl) |
| 95 | ||
| a2535589 JA |
96 | (defvar hexl-max-address 0 |
| 97 | "Maximum offset into hexl buffer.") | |
| 98 | ||
| 99 | (defvar hexl-mode-map nil) | |
| 100 | ||
| 3fc29559 | 101 | ;; Variable declarations for suppressing warnings from the byte-compiler. |
| b27ce24f RS |
102 | (defvar ruler-mode) |
| 103 | (defvar ruler-mode-ruler-function) | |
| 104 | (defvar hl-line-mode) | |
| 3fc29559 MY |
105 | (defvar hl-line-range-function) |
| 106 | (defvar hl-line-face) | |
| b27ce24f | 107 | |
| 3fc29559 MY |
108 | ;; Variables where the original values are stored to. |
| 109 | (defvar hexl-mode-old-hl-line-mode) | |
| 6ac2ae62 MY |
110 | (defvar hexl-mode-old-hl-line-range-function) |
| 111 | (defvar hexl-mode-old-hl-line-face) | |
| f39c6650 RS |
112 | (defvar hexl-mode-old-local-map) |
| 113 | (defvar hexl-mode-old-mode-name) | |
| 114 | (defvar hexl-mode-old-major-mode) | |
| b27ce24f | 115 | (defvar hexl-mode-old-ruler-mode) |
| 3fc29559 | 116 | (defvar hexl-mode-old-ruler-function) |
| 87b3b78a | 117 | (defvar hexl-mode-old-isearch-search-fun-function) |
| 0e4889b2 RS |
118 | (defvar hexl-mode-old-require-final-newline) |
| 119 | (defvar hexl-mode-old-syntax-table) | |
| 639b8e4d | 120 | (defvar hexl-mode-old-font-lock-keywords) |
| cfea581f | 121 | (defvar hexl-mode-old-eldoc-documentation-function) |
| f39c6650 | 122 | |
| db6c5b92 SE |
123 | (defvar hexl-ascii-overlay nil |
| 124 | "Overlay used to highlight ASCII element corresponding to current point.") | |
| 125 | (make-variable-buffer-local 'hexl-ascii-overlay) | |
| 126 | ||
| 639b8e4d MY |
127 | (defvar hexl-font-lock-keywords |
| 128 | '(("^\\([0-9a-f]+:\\).\\{40\\} \\(.+$\\)" | |
| 129 | ;; "^\\([0-9a-f]+:\\).+ \\(.+$\\)" | |
| 2d77d354 MY |
130 | (1 'hexl-address-region t t) |
| 131 | (2 'hexl-ascii-region t t))) | |
| 639b8e4d MY |
132 | "Font lock keywords used in `hexl-mode'.") |
| 133 | ||
| a2535589 JA |
134 | ;; routines |
| 135 | ||
| 2d902813 RS |
136 | (put 'hexl-mode 'mode-class 'special) |
| 137 | ||
| 31c75fa7 | 138 | ;;;###autoload |
| a2535589 | 139 | (defun hexl-mode (&optional arg) |
| 330bd7c3 PR |
140 | "\\<hexl-mode-map>A mode for editing binary files in hex dump format. |
| 141 | This is not an ordinary major mode; it alters some aspects | |
| fe0a77c6 | 142 | of the current mode's behavior, but not all; also, you can exit |
| 330bd7c3 | 143 | Hexl mode and return to the previous mode using `hexl-mode-exit'. |
| a2535589 JA |
144 | |
| 145 | This function automatically converts a buffer into the hexl format | |
| 146 | using the function `hexlify-buffer'. | |
| 147 | ||
| 8a1281b5 | 148 | Each line in the buffer has an \"address\" (displayed in hexadecimal) |
| a2535589 JA |
149 | representing the offset into the file that the characters on this line |
| 150 | are at and 16 characters from the file (displayed as hexadecimal | |
| 151 | values grouped every 16 bits) and as their ASCII values. | |
| 152 | ||
| 153 | If any of the characters (displayed as ASCII characters) are | |
| 154 | unprintable (control or meta characters) they will be replaced as | |
| 155 | periods. | |
| 156 | ||
| 8a1281b5 RS |
157 | If `hexl-mode' is invoked with an argument the buffer is assumed to be |
| 158 | in hexl format. | |
| a2535589 JA |
159 | |
| 160 | A sample format: | |
| 161 | ||
| 162 | HEX ADDR: 0001 0203 0405 0607 0809 0a0b 0c0d 0e0f ASCII-TEXT | |
| 163 | -------- ---- ---- ---- ---- ---- ---- ---- ---- ---------------- | |
| 164 | 00000000: 5468 6973 2069 7320 6865 786c 2d6d 6f64 This is hexl-mod | |
| 165 | 00000010: 652e 2020 4561 6368 206c 696e 6520 7265 e. Each line re | |
| 166 | 00000020: 7072 6573 656e 7473 2031 3620 6279 7465 presents 16 byte | |
| 167 | 00000030: 7320 6173 2068 6578 6164 6563 696d 616c s as hexadecimal | |
| 168 | 00000040: 2041 5343 4949 0a61 6e64 2070 7269 6e74 ASCII.and print | |
| 169 | 00000050: 6162 6c65 2041 5343 4949 2063 6861 7261 able ASCII chara | |
| 170 | 00000060: 6374 6572 732e 2020 416e 7920 636f 6e74 cters. Any cont | |
| 171 | 00000070: 726f 6c20 6f72 206e 6f6e 2d41 5343 4949 rol or non-ASCII | |
| 71296446 | 172 | 00000080: 2063 6861 7261 6374 6572 730a 6172 6520 characters.are |
| a2535589 JA |
173 | 00000090: 6469 7370 6c61 7965 6420 6173 2070 6572 displayed as per |
| 174 | 000000a0: 696f 6473 2069 6e20 7468 6520 7072 696e iods in the prin | |
| 71296446 | 175 | 000000b0: 7461 626c 6520 6368 6172 6163 7465 7220 table character |
| a2535589 JA |
176 | 000000c0: 7265 6769 6f6e 2e0a region.. |
| 177 | ||
| 89c24779 | 178 | Movement is as simple as movement in a normal Emacs text buffer. Most |
| a2535589 JA |
179 | cursor movement bindings are the same (ie. Use \\[hexl-backward-char], \\[hexl-forward-char], \\[hexl-next-line], and \\[hexl-previous-line] |
| 180 | to move the cursor left, right, down, and up). | |
| 181 | ||
| 182 | Advanced cursor movement commands (ala \\[hexl-beginning-of-line], \\[hexl-end-of-line], \\[hexl-beginning-of-buffer], and \\[hexl-end-of-buffer]) are | |
| 183 | also supported. | |
| 184 | ||
| 185 | There are several ways to change text in hexl mode: | |
| 186 | ||
| 187 | ASCII characters (character between space (0x20) and tilde (0x7E)) are | |
| 188 | bound to self-insert so you can simply type the character and it will | |
| 189 | insert itself (actually overstrike) into the buffer. | |
| 190 | ||
| 191 | \\[hexl-quoted-insert] followed by another keystroke allows you to insert the key even if | |
| 192 | it isn't bound to self-insert. An octal number can be supplied in place | |
| 193 | of another key to insert the octal number's ASCII representation. | |
| 194 | ||
| 195 | \\[hexl-insert-hex-char] will insert a given hexadecimal value (if it is between 0 and 0xFF) | |
| 196 | into the buffer at the current point. | |
| 197 | ||
| 198 | \\[hexl-insert-octal-char] will insert a given octal value (if it is between 0 and 0377) | |
| 199 | into the buffer at the current point. | |
| 200 | ||
| 201 | \\[hexl-insert-decimal-char] will insert a given decimal value (if it is between 0 and 255) | |
| 202 | into the buffer at the current point. | |
| 203 | ||
| a2535589 JA |
204 | \\[hexl-mode-exit] will exit hexl-mode. |
| 205 | ||
| 31c75fa7 RS |
206 | Note: saving the file with any of the usual Emacs commands |
| 207 | will actually convert it back to binary format while saving. | |
| a2535589 | 208 | |
| 330bd7c3 | 209 | You can use \\[hexl-find-file] to visit a file in Hexl mode. |
| a2535589 JA |
210 | |
| 211 | \\[describe-bindings] for advanced commands." | |
| 212 | (interactive "p") | |
| 330bd7c3 | 213 | (unless (eq major-mode 'hexl-mode) |
| 753c1309 RS |
214 | (let ((modified (buffer-modified-p)) |
| 215 | (inhibit-read-only t) | |
| 312d24fb | 216 | (original-point (- (point) (point-min)))) |
| 753c1309 RS |
217 | (and (eobp) (not (bobp)) |
| 218 | (setq original-point (1- original-point))) | |
| 312d24fb SM |
219 | ;; If `hexl-mode' is invoked with an argument the buffer is assumed to |
| 220 | ;; be in hexl format. | |
| 221 | (when (memq arg '(1 nil)) | |
| 7851eb98 EZ |
222 | ;; If the buffer's EOL type is -dos, we need to account for |
| 223 | ;; extra CR characters added when hexlify-buffer writes the | |
| 224 | ;; buffer to a file. | |
| 312d24fb | 225 | ;; FIXME: This doesn't take into account multibyte coding systems. |
| 7851eb98 | 226 | (when (eq (coding-system-eol-type buffer-file-coding-system) 1) |
| 312d24fb | 227 | (setq original-point (+ (count-lines (point-min) (point)) |
| 7851eb98 EZ |
228 | original-point)) |
| 229 | (or (bolp) (setq original-point (1- original-point)))) | |
| 753c1309 | 230 | (hexlify-buffer) |
| 37dc4767 | 231 | (restore-buffer-modified-p modified)) |
| 312d24fb SM |
232 | (set (make-local-variable 'hexl-max-address) |
| 233 | (let* ((full-lines (/ (buffer-size) 68)) | |
| 234 | (last-line (% (buffer-size) 68)) | |
| 235 | (last-line-bytes (% last-line 52))) | |
| 236 | (+ last-line-bytes (* full-lines 16) -1))) | |
| 55391f5e RS |
237 | (condition-case nil |
| 238 | (hexl-goto-address original-point) | |
| 239 | (error nil))) | |
| 753c1309 | 240 | |
| 0e4889b2 RS |
241 | ;; We do not turn off the old major mode; instead we just |
| 242 | ;; override most of it. That way, we can restore it perfectly. | |
| a2535589 JA |
243 | (make-local-variable 'hexl-mode-old-local-map) |
| 244 | (setq hexl-mode-old-local-map (current-local-map)) | |
| 245 | (use-local-map hexl-mode-map) | |
| 246 | ||
| 247 | (make-local-variable 'hexl-mode-old-mode-name) | |
| 248 | (setq hexl-mode-old-mode-name mode-name) | |
| 249 | (setq mode-name "Hexl") | |
| 250 | ||
| 87b3b78a SM |
251 | (set (make-local-variable 'hexl-mode-old-isearch-search-fun-function) |
| 252 | isearch-search-fun-function) | |
| 253 | (set (make-local-variable 'isearch-search-fun-function) | |
| 254 | 'hexl-isearch-search-function) | |
| 255 | ||
| a2535589 JA |
256 | (make-local-variable 'hexl-mode-old-major-mode) |
| 257 | (setq hexl-mode-old-major-mode major-mode) | |
| 258 | (setq major-mode 'hexl-mode) | |
| 259 | ||
| b27ce24f RS |
260 | (make-local-variable 'hexl-mode-old-ruler-mode) |
| 261 | (setq hexl-mode-old-ruler-mode | |
| 262 | (and (boundp 'ruler-mode) ruler-mode)) | |
| 263 | ||
| 264 | (make-local-variable 'hexl-mode-old-hl-line-mode) | |
| 265 | (setq hexl-mode-old-hl-line-mode | |
| 266 | (and (boundp 'hl-line-mode) hl-line-mode)) | |
| 267 | ||
| 0e4889b2 RS |
268 | (make-local-variable 'hexl-mode-old-syntax-table) |
| 269 | (setq hexl-mode-old-syntax-table (syntax-table)) | |
| 270 | (set-syntax-table (standard-syntax-table)) | |
| 271 | ||
| 87b3b78a | 272 | (add-hook 'write-contents-functions 'hexl-save-buffer nil t) |
| 31c75fa7 | 273 | |
| 0e4889b2 RS |
274 | (make-local-variable 'hexl-mode-old-require-final-newline) |
| 275 | (setq hexl-mode-old-require-final-newline require-final-newline) | |
| 276 | (make-local-variable 'require-final-newline) | |
| 277 | (setq require-final-newline nil) | |
| 278 | ||
| 639b8e4d MY |
279 | (make-local-variable 'hexl-mode-old-font-lock-keywords) |
| 280 | (setq hexl-mode-old-font-lock-keywords font-lock-defaults) | |
| 639b8e4d MY |
281 | (setq font-lock-defaults '(hexl-font-lock-keywords t)) |
| 282 | ||
| 0e4889b2 | 283 | ;; Add hooks to rehexlify or dehexlify on various events. |
| a30cc07b | 284 | (add-hook 'before-revert-hook 'hexl-before-revert-hook nil t) |
| c3de2bf0 RS |
285 | (add-hook 'after-revert-hook 'hexl-after-revert-hook nil t) |
| 286 | ||
| db6c5b92 SE |
287 | (add-hook 'change-major-mode-hook 'hexl-maybe-dehexlify-buffer nil t) |
| 288 | ||
| 01ff9136 | 289 | ;; Set a callback function for eldoc. |
| cfea581f JPW |
290 | (make-local-variable 'hexl-mode-old-eldoc-documentation-function) |
| 291 | (setq hexl-mode-old-eldoc-documentation-function | |
| 292 | (bound-and-true-p eldoc-documentation-function)) | |
| 293 | ||
| 881e0a3c | 294 | (set (make-local-variable 'eldoc-documentation-function) |
| 01ff9136 MY |
295 | 'hexl-print-current-point-info) |
| 296 | (eldoc-add-command-completions "hexl-") | |
| 625c1523 | 297 | (eldoc-remove-command "hexl-save-buffer" |
| 01ff9136 MY |
298 | "hexl-current-address") |
| 299 | ||
| db6c5b92 | 300 | (if hexl-follow-ascii (hexl-follow-ascii 1))) |
| 36555efc | 301 | (run-mode-hooks 'hexl-mode-hook)) |
| a2535589 | 302 | |
| 87b3b78a SM |
303 | |
| 304 | (defun hexl-isearch-search-function () | |
| 305 | (if (and (not isearch-regexp) (not isearch-word)) | |
| 306 | (lambda (string &optional bound noerror count) | |
| 307 | (funcall | |
| 308 | (if isearch-forward 're-search-forward 're-search-backward) | |
| 37dc4767 SM |
309 | (let ((textre |
| 310 | (if (> (length string) 80) | |
| 311 | (regexp-quote string) | |
| 312 | (mapconcat (lambda (c) (regexp-quote (string c))) string | |
| 313 | "\\(?:\n\\(?:[:a-f0-9]+ \\)+ \\)?")))) | |
| 314 | (if (string-match "\\` ?\\([a-f0-9]+ \\)*[a-f0-9]+ ?\\'" string) | |
| 315 | (concat textre "\\|" | |
| 316 | (mapconcat 'regexp-quote (split-string string " ") | |
| 317 | " \\(?: .+\n[a-f0-9]+: \\)?")) | |
| 318 | textre)) | |
| 87b3b78a SM |
319 | bound noerror count)) |
| 320 | (let ((isearch-search-fun-function nil)) | |
| 321 | (isearch-search-fun)))) | |
| 322 | ||
| f77c618f CY |
323 | (defun hexl-before-revert-hook () |
| 324 | (remove-hook 'change-major-mode-hook 'hexl-maybe-dehexlify-buffer t)) | |
| 325 | ||
| c3de2bf0 | 326 | (defun hexl-after-revert-hook () |
| f77c618f | 327 | (hexl-mode)) |
| c3de2bf0 | 328 | |
| ac2e902d JB |
329 | (defvar hexl-in-save-buffer nil) |
| 330 | ||
| a2535589 JA |
331 | (defun hexl-save-buffer () |
| 332 | "Save a hexl format buffer as binary in visited file if modified." | |
| 333 | (interactive) | |
| ac2e902d | 334 | (if hexl-in-save-buffer nil |
| 37dc4767 SM |
335 | (restore-buffer-modified-p |
| 336 | (if (buffer-modified-p) | |
| 337 | (let ((buf (generate-new-buffer " hexl")) | |
| 338 | (name (buffer-name)) | |
| 339 | (start (point-min)) | |
| 340 | (end (point-max)) | |
| 341 | modified) | |
| 342 | (with-current-buffer buf | |
| 343 | (insert-buffer-substring name start end) | |
| 344 | (set-buffer name) | |
| 345 | (dehexlify-buffer) | |
| 346 | ;; Prevent infinite recursion. | |
| 347 | (let ((hexl-in-save-buffer t)) | |
| 348 | (save-buffer)) | |
| 349 | (setq modified (buffer-modified-p)) | |
| 350 | (delete-region (point-min) (point-max)) | |
| 351 | (insert-buffer-substring buf start end) | |
| 352 | (kill-buffer buf) | |
| 353 | modified)) | |
| 354 | (message "(No changes need to be saved)") | |
| 355 | nil)) | |
| ac2e902d JB |
356 | ;; Return t to indicate we have saved t |
| 357 | t)) | |
| a2535589 | 358 | |
| 31c75fa7 | 359 | ;;;###autoload |
| a2535589 | 360 | (defun hexl-find-file (filename) |
| 7f9da0f3 EZ |
361 | "Edit file FILENAME as a binary file in hex dump format. |
| 362 | Switch to a buffer visiting file FILENAME, creating one if none exists, | |
| 363 | and edit the file in `hexl-mode'." | |
| e49a45ad MB |
364 | (interactive |
| 365 | (list | |
| 366 | (let ((completion-ignored-extensions nil)) | |
| 367 | (read-file-name "Filename: " nil nil 'ret-must-match)))) | |
| 3db6aff6 | 368 | ;; Ignore the user's setting of default-major-mode. |
| 45e8e6e7 | 369 | (let ((default-major-mode 'fundamental-mode)) |
| 3db6aff6 | 370 | (find-file-literally filename)) |
| a2535589 JA |
371 | (if (not (eq major-mode 'hexl-mode)) |
| 372 | (hexl-mode))) | |
| 373 | ||
| 374 | (defun hexl-mode-exit (&optional arg) | |
| 31c75fa7 | 375 | "Exit Hexl mode, returning to previous mode. |
| a2535589 JA |
376 | With arg, don't unhexlify buffer." |
| 377 | (interactive "p") | |
| 378 | (if (or (eq arg 1) (not arg)) | |
| 379 | (let ((modified (buffer-modified-p)) | |
| 900014dd | 380 | (inhibit-read-only t) |
| a2535589 | 381 | (original-point (1+ (hexl-current-address)))) |
| a2535589 | 382 | (dehexlify-buffer) |
| 87b3b78a | 383 | (remove-hook 'write-contents-functions 'hexl-save-buffer t) |
| 37dc4767 | 384 | (restore-buffer-modified-p modified) |
| 7851eb98 EZ |
385 | (goto-char original-point) |
| 386 | ;; Maybe adjust point for the removed CR characters. | |
| 387 | (when (eq (coding-system-eol-type buffer-file-coding-system) 1) | |
| 388 | (setq original-point (- original-point | |
| 389 | (count-lines (point-min) (point)))) | |
| 390 | (or (bobp) (setq original-point (1+ original-point)))) | |
| a2535589 | 391 | (goto-char original-point))) |
| 0e4889b2 | 392 | |
| f77c618f | 393 | (remove-hook 'before-revert-hook 'hexl-before-revert-hook t) |
| 0e4889b2 RS |
394 | (remove-hook 'after-revert-hook 'hexl-after-revert-hook t) |
| 395 | (remove-hook 'change-major-mode-hook 'hexl-maybe-dehexlify-buffer t) | |
| 8e7df2e6 SE |
396 | (remove-hook 'post-command-hook 'hexl-follow-ascii-find t) |
| 397 | (setq hexl-ascii-overlay nil) | |
| 0e4889b2 | 398 | |
| b27ce24f RS |
399 | (if (and (boundp 'ruler-mode) ruler-mode (not hexl-mode-old-ruler-mode)) |
| 400 | (ruler-mode 0)) | |
| 3fc29559 MY |
401 | (when (boundp 'hexl-mode-old-ruler-function) |
| 402 | (setq ruler-mode-ruler-function hexl-mode-old-ruler-function)) | |
| 403 | ||
| b27ce24f RS |
404 | (if (and (boundp 'hl-line-mode) hl-line-mode (not hexl-mode-old-hl-line-mode)) |
| 405 | (hl-line-mode 0)) | |
| 3fc29559 MY |
406 | (when (boundp 'hexl-mode-old-hl-line-range-function) |
| 407 | (setq hl-line-range-function hexl-mode-old-hl-line-range-function)) | |
| a30cc07b | 408 | (when (boundp 'hexl-mode-old-hl-line-face) |
| 3fc29559 | 409 | (setq hl-line-face hexl-mode-old-hl-line-face)) |
| a30cc07b | 410 | |
| cfea581f JPW |
411 | (when (boundp 'hexl-mode-old-eldoc-documentation-function) |
| 412 | (setq eldoc-documentation-function | |
| 413 | hexl-mode-old-eldoc-documentation-function)) | |
| 414 | ||
| 0e4889b2 | 415 | (setq require-final-newline hexl-mode-old-require-final-newline) |
| a2535589 | 416 | (setq mode-name hexl-mode-old-mode-name) |
| 87b3b78a | 417 | (setq isearch-search-fun-function hexl-mode-old-isearch-search-fun-function) |
| a2535589 | 418 | (use-local-map hexl-mode-old-local-map) |
| 0e4889b2 | 419 | (set-syntax-table hexl-mode-old-syntax-table) |
| 639b8e4d | 420 | (setq font-lock-defaults hexl-mode-old-font-lock-keywords) |
| a2535589 | 421 | (setq major-mode hexl-mode-old-major-mode) |
| 8eeac2ce RS |
422 | (force-mode-line-update)) |
| 423 | ||
| 424 | (defun hexl-maybe-dehexlify-buffer () | |
| 425 | "Convert a hexl format buffer to binary. | |
| 426 | Ask the user for confirmation." | |
| 427 | (if (y-or-n-p "Convert contents back to binary format? ") | |
| 428 | (let ((modified (buffer-modified-p)) | |
| 429 | (inhibit-read-only t) | |
| 430 | (original-point (1+ (hexl-current-address)))) | |
| 431 | (dehexlify-buffer) | |
| 87b3b78a | 432 | (remove-hook 'write-contents-functions 'hexl-save-buffer t) |
| 37dc4767 | 433 | (restore-buffer-modified-p modified) |
| 8eeac2ce | 434 | (goto-char original-point)))) |
| a2535589 | 435 | |
| 6bbb008e | 436 | (defun hexl-current-address (&optional validate) |
| a2535589 JA |
437 | "Return current hexl-address." |
| 438 | (interactive) | |
| 87b3b78a | 439 | (let ((current-column (- (% (- (point) (point-min) -1) 68) 11)) |
| a2535589 | 440 | (hexl-address 0)) |
| 6bbb008e RS |
441 | (if (< current-column 0) |
| 442 | (if validate | |
| 443 | (error "Point is not on a character in the file") | |
| 444 | (setq current-column 0))) | |
| 445 | (setq hexl-address | |
| 87b3b78a | 446 | (+ (* (/ (- (point) (point-min) -1) 68) 16) |
| 6bbb008e RS |
447 | (if (>= current-column 41) |
| 448 | (- current-column 41) | |
| 449 | (/ (- current-column (/ current-column 5)) 2)))) | |
| 48f56596 | 450 | (when (interactive-p) |
| 01ff9136 | 451 | (message "Current address is %d/0x%08x" hexl-address hexl-address)) |
| a2535589 JA |
452 | hexl-address)) |
| 453 | ||
| 01ff9136 MY |
454 | (defun hexl-print-current-point-info () |
| 455 | "Return current hexl-address in string. | |
| 12d96c20 | 456 | This function is intended to be used as eldoc callback." |
| 01ff9136 MY |
457 | (let ((addr (hexl-current-address))) |
| 458 | (format "Current address is %d/0x%08x" addr addr))) | |
| 459 | ||
| a2535589 | 460 | (defun hexl-address-to-marker (address) |
| 059c2e18 | 461 | "Return buffer position for ADDRESS." |
| a2535589 | 462 | (interactive "nAddress: ") |
| 87b3b78a | 463 | (+ (* (/ address 16) 68) 10 (point-min) (/ (* (% address 16) 5) 2))) |
| a2535589 JA |
464 | |
| 465 | (defun hexl-goto-address (address) | |
| 61dd70aa | 466 | "Go to hexl-mode (decimal) address ADDRESS. |
| 5232b4cd | 467 | Signal error if ADDRESS is out of range." |
| a2535589 JA |
468 | (interactive "nAddress: ") |
| 469 | (if (or (< address 0) (> address hexl-max-address)) | |
| 55391f5e | 470 | (error "Out of hexl region")) |
| a2535589 JA |
471 | (goto-char (hexl-address-to-marker address))) |
| 472 | ||
| 473 | (defun hexl-goto-hex-address (hex-address) | |
| 4c8c7ae9 | 474 | "Go to hexl-mode address (hex string) HEX-ADDRESS. |
| a2535589 JA |
475 | Signal error if HEX-ADDRESS is out of range." |
| 476 | (interactive "sHex Address: ") | |
| 477 | (hexl-goto-address (hexl-hex-string-to-integer hex-address))) | |
| 478 | ||
| 479 | (defun hexl-hex-string-to-integer (hex-string) | |
| 480 | "Return decimal integer for HEX-STRING." | |
| 481 | (interactive "sHex number: ") | |
| 482 | (let ((hex-num 0)) | |
| 483 | (while (not (equal hex-string "")) | |
| 484 | (setq hex-num (+ (* hex-num 16) | |
| 485 | (hexl-hex-char-to-integer (string-to-char hex-string)))) | |
| 486 | (setq hex-string (substring hex-string 1))) | |
| 487 | hex-num)) | |
| 488 | ||
| 489 | (defun hexl-octal-string-to-integer (octal-string) | |
| 490 | "Return decimal integer for OCTAL-STRING." | |
| 491 | (interactive "sOctal number: ") | |
| 492 | (let ((oct-num 0)) | |
| 493 | (while (not (equal octal-string "")) | |
| 494 | (setq oct-num (+ (* oct-num 8) | |
| 495 | (hexl-oct-char-to-integer | |
| 496 | (string-to-char octal-string)))) | |
| 497 | (setq octal-string (substring octal-string 1))) | |
| 498 | oct-num)) | |
| 499 | ||
| 500 | ;; move point functions | |
| 501 | ||
| 502 | (defun hexl-backward-char (arg) | |
| 503 | "Move to left ARG bytes (right if ARG negative) in hexl-mode." | |
| 504 | (interactive "p") | |
| 505 | (hexl-goto-address (- (hexl-current-address) arg))) | |
| 506 | ||
| 507 | (defun hexl-forward-char (arg) | |
| 5232b4cd | 508 | "Move to right ARG bytes (left if ARG negative) in hexl-mode." |
| a2535589 JA |
509 | (interactive "p") |
| 510 | (hexl-goto-address (+ (hexl-current-address) arg))) | |
| 511 | ||
| 512 | (defun hexl-backward-short (arg) | |
| 513 | "Move to left ARG shorts (right if ARG negative) in hexl-mode." | |
| 514 | (interactive "p") | |
| 515 | (hexl-goto-address (let ((address (hexl-current-address))) | |
| 516 | (if (< arg 0) | |
| 517 | (progn | |
| 518 | (setq arg (- arg)) | |
| 519 | (while (> arg 0) | |
| 520 | (if (not (equal address (logior address 3))) | |
| 521 | (if (> address hexl-max-address) | |
| 522 | (progn | |
| 523 | (message "End of buffer.") | |
| 524 | (setq address hexl-max-address)) | |
| 525 | (setq address (logior address 3))) | |
| 526 | (if (> address hexl-max-address) | |
| 527 | (progn | |
| 528 | (message "End of buffer.") | |
| 529 | (setq address hexl-max-address)) | |
| 530 | (setq address (+ address 4)))) | |
| 531 | (setq arg (1- arg))) | |
| 532 | (if (> address hexl-max-address) | |
| 533 | (progn | |
| 534 | (message "End of buffer.") | |
| 535 | (setq address hexl-max-address)) | |
| 536 | (setq address (logior address 3)))) | |
| 537 | (while (> arg 0) | |
| 538 | (if (not (equal address (logand address -4))) | |
| 539 | (setq address (logand address -4)) | |
| 540 | (if (not (equal address 0)) | |
| 541 | (setq address (- address 4)) | |
| 542 | (message "Beginning of buffer."))) | |
| 543 | (setq arg (1- arg)))) | |
| 544 | address))) | |
| 545 | ||
| 546 | (defun hexl-forward-short (arg) | |
| 5232b4cd | 547 | "Move to right ARG shorts (left if ARG negative) in hexl-mode." |
| a2535589 JA |
548 | (interactive "p") |
| 549 | (hexl-backward-short (- arg))) | |
| 550 | ||
| 551 | (defun hexl-backward-word (arg) | |
| 552 | "Move to left ARG words (right if ARG negative) in hexl-mode." | |
| 553 | (interactive "p") | |
| 554 | (hexl-goto-address (let ((address (hexl-current-address))) | |
| 555 | (if (< arg 0) | |
| 556 | (progn | |
| 557 | (setq arg (- arg)) | |
| 558 | (while (> arg 0) | |
| 559 | (if (not (equal address (logior address 7))) | |
| 560 | (if (> address hexl-max-address) | |
| 561 | (progn | |
| 562 | (message "End of buffer.") | |
| 563 | (setq address hexl-max-address)) | |
| 564 | (setq address (logior address 7))) | |
| 565 | (if (> address hexl-max-address) | |
| 566 | (progn | |
| 567 | (message "End of buffer.") | |
| 568 | (setq address hexl-max-address)) | |
| 569 | (setq address (+ address 8)))) | |
| 570 | (setq arg (1- arg))) | |
| 571 | (if (> address hexl-max-address) | |
| 572 | (progn | |
| 573 | (message "End of buffer.") | |
| 574 | (setq address hexl-max-address)) | |
| 575 | (setq address (logior address 7)))) | |
| 576 | (while (> arg 0) | |
| 577 | (if (not (equal address (logand address -8))) | |
| 578 | (setq address (logand address -8)) | |
| 579 | (if (not (equal address 0)) | |
| 580 | (setq address (- address 8)) | |
| 581 | (message "Beginning of buffer."))) | |
| 582 | (setq arg (1- arg)))) | |
| 583 | address))) | |
| 584 | ||
| 585 | (defun hexl-forward-word (arg) | |
| 5232b4cd | 586 | "Move to right ARG words (left if ARG negative) in hexl-mode." |
| a2535589 JA |
587 | (interactive "p") |
| 588 | (hexl-backward-word (- arg))) | |
| 589 | ||
| 590 | (defun hexl-previous-line (arg) | |
| 4c8c7ae9 | 591 | "Move vertically up ARG lines [16 bytes] (down if ARG negative) in hexl-mode. |
| 5232b4cd | 592 | If there is no byte at the target address move to the last byte in that line." |
| a2535589 JA |
593 | (interactive "p") |
| 594 | (hexl-next-line (- arg))) | |
| 595 | ||
| 596 | (defun hexl-next-line (arg) | |
| 4c8c7ae9 JB |
597 | "Move vertically down ARG lines [16 bytes] (up if ARG negative) in hexl-mode. |
| 598 | If there is no byte at the target address move to the last byte in that line." | |
| a2535589 | 599 | (interactive "p") |
| e8a57935 | 600 | (hexl-goto-address (let ((address (+ (hexl-current-address) (* arg 16)))) |
| a2535589 JA |
601 | (if (and (< arg 0) (< address 0)) |
| 602 | (progn (message "Out of hexl region.") | |
| 603 | (setq address | |
| 604 | (% (hexl-current-address) 16))) | |
| 605 | (if (and (> address hexl-max-address) | |
| 606 | (< (% hexl-max-address 16) (% address 16))) | |
| 607 | (setq address hexl-max-address) | |
| 608 | (if (> address hexl-max-address) | |
| 609 | (progn (message "Out of hexl region.") | |
| 610 | (setq | |
| 611 | address | |
| 612 | (+ (logand hexl-max-address -16) | |
| 613 | (% (hexl-current-address) 16))))))) | |
| 614 | address))) | |
| 615 | ||
| 616 | (defun hexl-beginning-of-buffer (arg) | |
| 4c8c7ae9 JB |
617 | "Move to the beginning of the hexl buffer. |
| 618 | Leaves `hexl-mark' at previous position. | |
| 619 | With prefix arg N, puts point N bytes of the way from the true beginning." | |
| a2535589 JA |
620 | (interactive "p") |
| 621 | (push-mark (point)) | |
| 622 | (hexl-goto-address (+ 0 (1- arg)))) | |
| 623 | ||
| 624 | (defun hexl-end-of-buffer (arg) | |
| 4c8c7ae9 | 625 | "Go to `hexl-max-address' minus ARG." |
| a2535589 JA |
626 | (interactive "p") |
| 627 | (push-mark (point)) | |
| 628 | (hexl-goto-address (- hexl-max-address (1- arg)))) | |
| 629 | ||
| 630 | (defun hexl-beginning-of-line () | |
| 631 | "Goto beginning of line in hexl mode." | |
| 632 | (interactive) | |
| 633 | (goto-char (+ (* (/ (point) 68) 68) 11))) | |
| 634 | ||
| 635 | (defun hexl-end-of-line () | |
| 636 | "Goto end of line in hexl mode." | |
| 637 | (interactive) | |
| 638 | (hexl-goto-address (let ((address (logior (hexl-current-address) 15))) | |
| 639 | (if (> address hexl-max-address) | |
| 640 | (setq address hexl-max-address)) | |
| 641 | address))) | |
| 642 | ||
| 643 | (defun hexl-scroll-down (arg) | |
| 644 | "Scroll hexl buffer window upward ARG lines; or near full window if no ARG." | |
| 645 | (interactive "P") | |
| 646 | (if (null arg) | |
| 647 | (setq arg (1- (window-height))) | |
| 648 | (setq arg (prefix-numeric-value arg))) | |
| 649 | (hexl-scroll-up (- arg))) | |
| 650 | ||
| 651 | (defun hexl-scroll-up (arg) | |
| d565f6aa EZ |
652 | "Scroll hexl buffer window upward ARG lines; or near full window if no ARG. |
| 653 | If there's no byte at the target address, move to the first or last line." | |
| a2535589 JA |
654 | (interactive "P") |
| 655 | (if (null arg) | |
| 656 | (setq arg (1- (window-height))) | |
| 657 | (setq arg (prefix-numeric-value arg))) | |
| d565f6aa EZ |
658 | (let* ((movement (* arg 16)) |
| 659 | (address (hexl-current-address)) | |
| 660 | (dest (+ address movement))) | |
| 661 | (cond | |
| 662 | ;; If possible, try to stay at the same offset from the beginning | |
| 663 | ;; of the 16-byte group, even if we move to the first or last | |
| 664 | ;; group. | |
| 665 | ((and (> dest hexl-max-address) | |
| 666 | (>= (% hexl-max-address 16) (% address 16))) | |
| 667 | (setq dest (+ (logand hexl-max-address -16) (% address 16)))) | |
| 668 | ((> dest hexl-max-address) | |
| 669 | (setq dest hexl-max-address)) | |
| 670 | ((< dest 0) | |
| 671 | (setq dest (% address 16)))) | |
| 672 | (if (/= dest (+ address movement)) | |
| 673 | (message "Out of hexl region.")) | |
| 674 | (hexl-goto-address dest) | |
| 675 | (recenter 0))) | |
| a2535589 JA |
676 | |
| 677 | (defun hexl-beginning-of-1k-page () | |
| 5232b4cd | 678 | "Go to beginning of 1KB boundary." |
| a2535589 JA |
679 | (interactive) |
| 680 | (hexl-goto-address (logand (hexl-current-address) -1024))) | |
| 681 | ||
| 682 | (defun hexl-end-of-1k-page () | |
| 5232b4cd | 683 | "Go to end of 1KB boundary." |
| a2535589 JA |
684 | (interactive) |
| 685 | (hexl-goto-address (let ((address (logior (hexl-current-address) 1023))) | |
| 686 | (if (> address hexl-max-address) | |
| 687 | (setq address hexl-max-address)) | |
| 688 | address))) | |
| 689 | ||
| 690 | (defun hexl-beginning-of-512b-page () | |
| 65e5f4bc | 691 | "Go to beginning of 512 byte boundary." |
| a2535589 JA |
692 | (interactive) |
| 693 | (hexl-goto-address (logand (hexl-current-address) -512))) | |
| 694 | ||
| 695 | (defun hexl-end-of-512b-page () | |
| 65e5f4bc | 696 | "Go to end of 512 byte boundary." |
| a2535589 JA |
697 | (interactive) |
| 698 | (hexl-goto-address (let ((address (logior (hexl-current-address) 511))) | |
| 699 | (if (> address hexl-max-address) | |
| 700 | (setq address hexl-max-address)) | |
| 701 | address))) | |
| 702 | ||
| 703 | (defun hexl-quoted-insert (arg) | |
| 704 | "Read next input character and insert it. | |
| 02aec07b EZ |
705 | Useful for inserting control characters and non-ASCII characters given their |
| 706 | numerical code. | |
| 707 | You may also type octal digits, to insert a character with that code." | |
| a2535589 | 708 | (interactive "p") |
| 02aec07b | 709 | (hexl-insert-multibyte-char (read-quoted-char) arg)) |
| a2535589 JA |
710 | |
| 711 | ;00000000: 0011 2233 4455 6677 8899 aabb ccdd eeff 0123456789ABCDEF | |
| 712 | ||
| f4e3d4eb | 713 | ;;;###autoload |
| a2535589 | 714 | (defun hexlify-buffer () |
| aa3757b8 RS |
715 | "Convert a binary buffer to hexl format. |
| 716 | This discards the buffer's undo information." | |
| a2535589 | 717 | (interactive) |
| 62222158 | 718 | (and (consp buffer-undo-list) |
| aa3757b8 | 719 | (or (y-or-n-p "Converting to hexl format discards undo info; ok? ") |
| 62222158 SM |
720 | (error "Aborted")) |
| 721 | (setq buffer-undo-list nil)) | |
| a749e5e5 EZ |
722 | ;; Don't decode text in the ASCII part of `hexl' program output. |
| 723 | (let ((coding-system-for-read 'raw-text) | |
| 0716afa2 | 724 | (coding-system-for-write buffer-file-coding-system) |
| aa3757b8 | 725 | (buffer-undo-list t)) |
| b8c49a19 SM |
726 | (apply 'call-process-region (point-min) (point-max) |
| 727 | (expand-file-name hexl-program exec-directory) | |
| 4a729d58 SM |
728 | t t nil |
| 729 | ;; Manually encode the args, otherwise they're encoded using | |
| 730 | ;; coding-system-for-write (i.e. buffer-file-coding-system) which | |
| 731 | ;; may not be what we want (e.g. utf-16 on a non-utf-16 system). | |
| 312d24fb SM |
732 | (mapcar (lambda (s) |
| 733 | (if (not (multibyte-string-p s)) s | |
| 734 | (encode-coding-string s locale-coding-system))) | |
| 4a729d58 | 735 | (split-string hexl-options))) |
| 059c2e18 PR |
736 | (if (> (point) (hexl-address-to-marker hexl-max-address)) |
| 737 | (hexl-goto-address hexl-max-address)))) | |
| a2535589 JA |
738 | |
| 739 | (defun dehexlify-buffer () | |
| aa3757b8 RS |
740 | "Convert a hexl format buffer to binary. |
| 741 | This discards the buffer's undo information." | |
| a2535589 | 742 | (interactive) |
| 62222158 | 743 | (and (consp buffer-undo-list) |
| aa3757b8 | 744 | (or (y-or-n-p "Converting from hexl format discards undo info; ok? ") |
| 62222158 SM |
745 | (error "Aborted")) |
| 746 | (setq buffer-undo-list nil)) | |
| a749e5e5 | 747 | (let ((coding-system-for-write 'raw-text) |
| 0716afa2 | 748 | (coding-system-for-read buffer-file-coding-system) |
| aa3757b8 | 749 | (buffer-undo-list t)) |
| b8c49a19 SM |
750 | (apply 'call-process-region (point-min) (point-max) |
| 751 | (expand-file-name hexl-program exec-directory) | |
| 752 | t t nil "-de" (split-string hexl-options)))) | |
| a2535589 JA |
753 | |
| 754 | (defun hexl-char-after-point () | |
| 755 | "Return char for ASCII hex digits at point." | |
| 686fc9ab RS |
756 | (hexl-htoi (char-after (point)) |
| 757 | (char-after (1+ (point))))) | |
| a2535589 JA |
758 | |
| 759 | (defun hexl-htoi (lh rh) | |
| 760 | "Hex (char) LH (char) RH to integer." | |
| 761 | (+ (* (hexl-hex-char-to-integer lh) 16) | |
| 762 | (hexl-hex-char-to-integer rh))) | |
| 763 | ||
| 764 | (defun hexl-hex-char-to-integer (character) | |
| 765 | "Take a char and return its value as if it was a hex digit." | |
| 766 | (if (and (>= character ?0) (<= character ?9)) | |
| 767 | (- character ?0) | |
| 768 | (let ((ch (logior character 32))) | |
| 769 | (if (and (>= ch ?a) (<= ch ?f)) | |
| 770 | (- ch (- ?a 10)) | |
| 19e31f7c | 771 | (error "Invalid hex digit `%c'" ch))))) |
| a2535589 JA |
772 | |
| 773 | (defun hexl-oct-char-to-integer (character) | |
| 774 | "Take a char and return its value as if it was a octal digit." | |
| 775 | (if (and (>= character ?0) (<= character ?7)) | |
| 776 | (- character ?0) | |
| 19e31f7c | 777 | (error "Invalid octal digit `%c'" character))) |
| a2535589 JA |
778 | |
| 779 | (defun hexl-printable-character (ch) | |
| 780 | "Return a displayable string for character CH." | |
| 781 | (format "%c" (if hexl-iso | |
| 782 | (if (or (< ch 32) (and (>= ch 127) (< ch 160))) | |
| 783 | 46 | |
| 784 | ch) | |
| 785 | (if (or (< ch 32) (>= ch 127)) | |
| 786 | 46 | |
| 787 | ch)))) | |
| 788 | ||
| 02aec07b EZ |
789 | (defun hexl-insert-multibyte-char (ch num) |
| 790 | "Insert a possibly multibyte character CH NUM times. | |
| 791 | ||
| 792 | Non-ASCII characters are first encoded with `buffer-file-coding-system', | |
| 793 | and their encoded form is inserted byte by byte." | |
| 794 | (let ((charset (char-charset ch)) | |
| 795 | (coding (if (or (null buffer-file-coding-system) | |
| 796 | ;; coding-system-type equals t means undecided. | |
| 797 | (eq (coding-system-type buffer-file-coding-system) t)) | |
| 798 | default-buffer-file-coding-system | |
| 799 | buffer-file-coding-system))) | |
| 800 | (cond ((and (> ch 0) (< ch 256)) | |
| 801 | (hexl-insert-char ch num)) | |
| 802 | ((eq charset 'unknown) | |
| 803 | (error | |
| 165b4283 | 804 | "0x%x -- invalid character code; use \\[hexl-insert-hex-string]" |
| 02aec07b EZ |
805 | ch)) |
| 806 | (t | |
| 807 | (let ((encoded (encode-coding-char ch coding)) | |
| 808 | (internal (string-as-unibyte (char-to-string ch))) | |
| 809 | internal-hex) | |
| 810 | ;; If encode-coding-char returns nil, it means our character | |
| 811 | ;; cannot be safely encoded with buffer-file-coding-system. | |
| 812 | ;; In that case, we offer to insert the internal representation | |
| 813 | ;; of that character, byte by byte. | |
| 814 | (when (null encoded) | |
| 815 | (setq internal-hex | |
| 816 | (mapconcat (function (lambda (c) (format "%x" c))) | |
| 817 | internal " ")) | |
| 818 | (if (yes-or-no-p | |
| 819 | (format | |
| 820 | "Insert char 0x%x's internal representation \"%s\"? " | |
| 821 | ch internal-hex)) | |
| 822 | (setq encoded internal) | |
| 823 | (error | |
| 165b4283 | 824 | "Can't encode `0x%x' with this buffer's coding system; try \\[hexl-insert-hex-string]" |
| 02aec07b EZ |
825 | ch))) |
| 826 | (while (> num 0) | |
| 827 | (mapc | |
| 828 | (function (lambda (c) (hexl-insert-char c 1))) encoded) | |
| 829 | (setq num (1- num)))))))) | |
| 830 | ||
| a2535589 | 831 | (defun hexl-self-insert-command (arg) |
| 02aec07b EZ |
832 | "Insert this character. |
| 833 | Interactively, with a numeric argument, insert this character that many times. | |
| 834 | ||
| 835 | Non-ASCII characters are first encoded with `buffer-file-coding-system', | |
| 836 | and their encoded form is inserted byte by byte." | |
| a2535589 | 837 | (interactive "p") |
| 02aec07b | 838 | (hexl-insert-multibyte-char last-command-char arg)) |
| a2535589 JA |
839 | |
| 840 | (defun hexl-insert-char (ch num) | |
| 02aec07b EZ |
841 | "Insert the character CH NUM times in a hexl buffer. |
| 842 | ||
| 843 | CH must be a unibyte character whose value is between 0 and 255." | |
| 844 | (if (or (< ch 0) (> ch 255)) | |
| 45ad49ba | 845 | (error "Invalid character 0x%x -- must be in the range [0..255]" ch)) |
| 6bbb008e | 846 | (let ((address (hexl-current-address t))) |
| a2535589 | 847 | (while (> num 0) |
| 6bbb008e RS |
848 | (let ((hex-position |
| 849 | (+ (* (/ address 16) 68) | |
| 87b3b78a | 850 | 10 (point-min) |
| 6bbb008e RS |
851 | (* 2 (% address 16)) |
| 852 | (/ (% address 16) 2))) | |
| 853 | (ascii-position | |
| 87b3b78a | 854 | (+ (* (/ address 16) 68) 51 (point-min) (% address 16))) |
| 6bbb008e RS |
855 | at-ascii-position) |
| 856 | (if (= (point) ascii-position) | |
| 857 | (setq at-ascii-position t)) | |
| 858 | (goto-char hex-position) | |
| 859 | (delete-char 2) | |
| 860 | (insert (format "%02x" ch)) | |
| 861 | (goto-char ascii-position) | |
| 862 | (delete-char 1) | |
| 863 | (insert (hexl-printable-character ch)) | |
| 864 | (or (eq address hexl-max-address) | |
| 865 | (setq address (1+ address))) | |
| 866 | (hexl-goto-address address) | |
| 867 | (if at-ascii-position | |
| 868 | (progn | |
| 869 | (beginning-of-line) | |
| 870 | (forward-char 51) | |
| 871 | (forward-char (% address 16))))) | |
| a2535589 JA |
872 | (setq num (1- num))))) |
| 873 | ||
| 874 | ;; hex conversion | |
| 875 | ||
| 876 | (defun hexl-insert-hex-char (arg) | |
| 02aec07b | 877 | "Insert a character given by its hexadecimal code ARG times at point." |
| a2535589 JA |
878 | (interactive "p") |
| 879 | (let ((num (hexl-hex-string-to-integer (read-string "Hex number: ")))) | |
| 02aec07b | 880 | (if (< num 0) |
| 19e31f7c | 881 | (error "Hex number out of range") |
| 02aec07b | 882 | (hexl-insert-multibyte-char num arg)))) |
| a2535589 | 883 | |
| 9f6bff44 GM |
884 | (defun hexl-insert-hex-string (str arg) |
| 885 | "Insert hexadecimal string STR at point ARG times. | |
| 886 | Embedded whitespace, dashes, and periods in the string are ignored." | |
| 887 | (interactive "sHex string: \np") | |
| 888 | (setq str (replace-regexp-in-string "[- \t.]" "" str)) | |
| 889 | (let ((chars '())) | |
| 890 | (let ((len (length str)) | |
| 891 | (idx 0)) | |
| 892 | (if (eq (logand len 1) 1) | |
| 893 | (let ((num (hexl-hex-string-to-integer (substring str 0 1)))) | |
| 894 | (setq chars (cons num chars)) | |
| 895 | (setq idx 1))) | |
| 896 | (while (< idx len) | |
| 897 | (let* ((nidx (+ idx 2)) | |
| 898 | (num (hexl-hex-string-to-integer (substring str idx nidx)))) | |
| 899 | (setq chars (cons num chars)) | |
| 900 | (setq idx nidx)))) | |
| 901 | (setq chars (nreverse chars)) | |
| 902 | (while (> arg 0) | |
| 903 | (let ((chars chars)) | |
| 904 | (while chars | |
| 905 | (hexl-insert-char (car chars) 1) | |
| 906 | (setq chars (cdr chars)))) | |
| 907 | (setq arg (- arg 1))))) | |
| 908 | ||
| a2535589 | 909 | (defun hexl-insert-decimal-char (arg) |
| 02aec07b | 910 | "Insert a character given by its decimal code ARG times at point." |
| a2535589 | 911 | (interactive "p") |
| 027a4b6b | 912 | (let ((num (string-to-number (read-string "Decimal Number: ")))) |
| 02aec07b | 913 | (if (< num 0) |
| 19e31f7c | 914 | (error "Decimal number out of range") |
| 02aec07b | 915 | (hexl-insert-multibyte-char num arg)))) |
| a2535589 JA |
916 | |
| 917 | (defun hexl-insert-octal-char (arg) | |
| 02aec07b | 918 | "Insert a character given by its octal code ARG times at point." |
| a2535589 JA |
919 | (interactive "p") |
| 920 | (let ((num (hexl-octal-string-to-integer (read-string "Octal Number: ")))) | |
| 02aec07b | 921 | (if (< num 0) |
| 19e31f7c | 922 | (error "Decimal number out of range") |
| 02aec07b | 923 | (hexl-insert-multibyte-char num arg)))) |
| a2535589 | 924 | |
| db6c5b92 SE |
925 | (defun hexl-follow-ascii (&optional arg) |
| 926 | "Toggle following ASCII in Hexl buffers. | |
| 927 | With prefix ARG, turn on following if and only if ARG is positive. | |
| 928 | When following is enabled, the ASCII character corresponding to the | |
| 929 | element under the point is highlighted. | |
| 930 | Customize the variable `hexl-follow-ascii' to disable this feature." | |
| 931 | (interactive "P") | |
| 71296446 | 932 | (let ((on-p (if arg |
| db6c5b92 SE |
933 | (> (prefix-numeric-value arg) 0) |
| 934 | (not hexl-ascii-overlay)))) | |
| 935 | ||
| db6c5b92 SE |
936 | (if on-p |
| 937 | ;; turn it on | |
| 938 | (if (not hexl-ascii-overlay) | |
| 939 | (progn | |
| 940 | (setq hexl-ascii-overlay (make-overlay 1 1) | |
| 941 | hexl-follow-ascii t) | |
| 942 | (overlay-put hexl-ascii-overlay 'face 'highlight) | |
| 943 | (add-hook 'post-command-hook 'hexl-follow-ascii-find nil t))) | |
| 944 | ;; turn it off | |
| 945 | (if hexl-ascii-overlay | |
| 946 | (progn | |
| 947 | (delete-overlay hexl-ascii-overlay) | |
| 948 | (setq hexl-ascii-overlay nil | |
| 949 | hexl-follow-ascii nil) | |
| 950 | (remove-hook 'post-command-hook 'hexl-follow-ascii-find t) | |
| 951 | ))))) | |
| 952 | ||
| 9fd76d04 | 953 | (defun hexl-activate-ruler () |
| 37dc4767 | 954 | "Activate `ruler-mode'." |
| 9fd76d04 | 955 | (require 'ruler-mode) |
| 3fc29559 MY |
956 | (unless (boundp 'hexl-mode-old-ruler-function) |
| 957 | (set (make-local-variable 'hexl-mode-old-ruler-function) | |
| 958 | ruler-mode-ruler-function)) | |
| 625c1523 | 959 | (set (make-local-variable 'ruler-mode-ruler-function) |
| 9fd76d04 MY |
960 | 'hexl-mode-ruler) |
| 961 | (ruler-mode 1)) | |
| 962 | ||
| 963 | (defun hexl-follow-line () | |
| 37dc4767 | 964 | "Activate `hl-line-mode'." |
| 9fd76d04 | 965 | (require 'hl-line) |
| 3fc29559 MY |
966 | (unless (boundp 'hexl-mode-old-hl-line-range-function) |
| 967 | (set (make-local-variable 'hexl-mode-old-hl-line-range-function) | |
| 968 | hl-line-range-function)) | |
| 969 | (unless (boundp 'hexl-mode-old-hl-line-face) | |
| 970 | (set (make-local-variable 'hexl-mode-old-hl-line-face) | |
| 971 | hl-line-face)) | |
| 972 | (set (make-local-variable 'hl-line-range-function) | |
| 973 | 'hexl-highlight-line-range) | |
| 974 | (set (make-local-variable 'hl-line-face) | |
| 975 | 'highlight) | |
| 9fd76d04 MY |
976 | (hl-line-mode 1)) |
| 977 | ||
| 978 | (defun hexl-highlight-line-range () | |
| 2d77d354 | 979 | "Return the range of address region for the point. |
| 5232b4cd | 980 | This function is assumed to be used as callback function for `hl-line-mode'." |
| 9fd76d04 MY |
981 | (cons |
| 982 | (line-beginning-position) | |
| 983 | ;; 9 stands for (length "87654321:") | |
| 984 | (+ (line-beginning-position) 9))) | |
| 985 | ||
| db6c5b92 SE |
986 | (defun hexl-follow-ascii-find () |
| 987 | "Find and highlight the ASCII element corresponding to current point." | |
| d565f6aa | 988 | (let ((pos (+ 51 |
| db6c5b92 SE |
989 | (- (point) (current-column)) |
| 990 | (mod (hexl-current-address) 16)))) | |
| 991 | (move-overlay hexl-ascii-overlay pos (1+ pos)) | |
| 992 | )) | |
| 993 | ||
| 9fd76d04 MY |
994 | (defun hexl-mode-ruler () |
| 995 | "Return a string ruler for hexl mode." | |
| 996 | (let* ((highlight (mod (hexl-current-address) 16)) | |
| 4c4ac516 KS |
997 | (s " 87654321 0011 2233 4455 6677 8899 aabb ccdd eeff 0123456789abcdef") |
| 998 | (pos 0)) | |
| 9fd76d04 MY |
999 | (set-text-properties 0 (length s) nil s) |
| 1000 | ;; Turn spaces in the header into stretch specs so they work | |
| 1001 | ;; regardless of the header-line face. | |
| 1002 | (while (string-match "[ \t]+" s pos) | |
| 1003 | (setq pos (match-end 0)) | |
| 1004 | (put-text-property (match-beginning 0) pos 'display | |
| 1005 | ;; Assume fixed-size chars | |
| 4c4ac516 | 1006 | `(space :align-to ,(1- pos)) |
| 9fd76d04 MY |
1007 | s)) |
| 1008 | ;; Highlight the current column. | |
| 4c4ac516 KS |
1009 | (put-text-property (+ 11 (/ (* 5 highlight) 2)) |
| 1010 | (+ 13 (/ (* 5 highlight) 2)) | |
| 9fd76d04 MY |
1011 | 'face 'highlight s) |
| 1012 | ;; Highlight the current ascii column | |
| 4c4ac516 | 1013 | (put-text-property (+ 13 39 highlight) (+ 13 40 highlight) |
| 9fd76d04 | 1014 | 'face 'highlight s) |
| 4c4ac516 | 1015 | s)) |
| 9fd76d04 | 1016 | |
| a2535589 JA |
1017 | ;; startup stuff. |
| 1018 | ||
| 1019 | (if hexl-mode-map | |
| 1020 | nil | |
| 4b7dd7e2 | 1021 | (setq hexl-mode-map (make-keymap)) |
| 02aec07b EZ |
1022 | ;; Make all self-inserting keys go through hexl-self-insert-command, |
| 1023 | ;; because we need to convert them to unibyte characters before | |
| 1024 | ;; inserting them into the buffer. | |
| 340c4d85 | 1025 | (define-key hexl-mode-map [remap self-insert-command] 'hexl-self-insert-command) |
| ae2d451b | 1026 | |
| d9c8518d | 1027 | (define-key hexl-mode-map "\C-m" 'hexl-self-insert-command) |
| ae2d451b RS |
1028 | (define-key hexl-mode-map [left] 'hexl-backward-char) |
| 1029 | (define-key hexl-mode-map [right] 'hexl-forward-char) | |
| 1030 | (define-key hexl-mode-map [up] 'hexl-previous-line) | |
| 1031 | (define-key hexl-mode-map [down] 'hexl-next-line) | |
| 1032 | (define-key hexl-mode-map [M-left] 'hexl-backward-short) | |
| 480c8cd3 | 1033 | (define-key hexl-mode-map [?\e left] 'hexl-backward-short) |
| ae2d451b | 1034 | (define-key hexl-mode-map [M-right] 'hexl-forward-short) |
| 480c8cd3 | 1035 | (define-key hexl-mode-map [?\e right] 'hexl-forward-short) |
| ae2d451b RS |
1036 | (define-key hexl-mode-map [next] 'hexl-scroll-up) |
| 1037 | (define-key hexl-mode-map [prior] 'hexl-scroll-down) | |
| d565f6aa EZ |
1038 | (define-key hexl-mode-map [home] 'hexl-beginning-of-line) |
| 1039 | (define-key hexl-mode-map [end] 'hexl-end-of-line) | |
| 1040 | (define-key hexl-mode-map [C-home] 'hexl-beginning-of-buffer) | |
| 1041 | (define-key hexl-mode-map [C-end] 'hexl-end-of-buffer) | |
| ae2d451b RS |
1042 | (define-key hexl-mode-map [deletechar] 'undefined) |
| 1043 | (define-key hexl-mode-map [deleteline] 'undefined) | |
| 1044 | (define-key hexl-mode-map [insertline] 'undefined) | |
| 1045 | (define-key hexl-mode-map [S-delete] 'undefined) | |
| 1046 | (define-key hexl-mode-map "\177" 'undefined) | |
| 1047 | ||
| 1048 | (define-key hexl-mode-map "\C-a" 'hexl-beginning-of-line) | |
| 1049 | (define-key hexl-mode-map "\C-b" 'hexl-backward-char) | |
| 1050 | (define-key hexl-mode-map "\C-d" 'undefined) | |
| 1051 | (define-key hexl-mode-map "\C-e" 'hexl-end-of-line) | |
| 1052 | (define-key hexl-mode-map "\C-f" 'hexl-forward-char) | |
| 1053 | ||
| 625c1523 JB |
1054 | (if (not (memq (key-binding (char-to-string help-char)) |
| 1055 | '(help-command ehelp-command))) | |
| ae2d451b RS |
1056 | (define-key hexl-mode-map (char-to-string help-char) 'undefined)) |
| 1057 | ||
| ae2d451b | 1058 | (define-key hexl-mode-map "\C-k" 'undefined) |
| ae2d451b RS |
1059 | (define-key hexl-mode-map "\C-n" 'hexl-next-line) |
| 1060 | (define-key hexl-mode-map "\C-o" 'undefined) | |
| 1061 | (define-key hexl-mode-map "\C-p" 'hexl-previous-line) | |
| 1062 | (define-key hexl-mode-map "\C-q" 'hexl-quoted-insert) | |
| 1063 | (define-key hexl-mode-map "\C-t" 'undefined) | |
| 1064 | (define-key hexl-mode-map "\C-v" 'hexl-scroll-up) | |
| 1065 | (define-key hexl-mode-map "\C-w" 'undefined) | |
| 1066 | (define-key hexl-mode-map "\C-y" 'undefined) | |
| 1067 | ||
| 02aec07b EZ |
1068 | (fset 'hexl-ESC-prefix (copy-keymap 'ESC-prefix)) |
| 1069 | (define-key hexl-mode-map "\e" 'hexl-ESC-prefix) | |
| ae2d451b RS |
1070 | (define-key hexl-mode-map "\e\C-a" 'hexl-beginning-of-512b-page) |
| 1071 | (define-key hexl-mode-map "\e\C-b" 'hexl-backward-short) | |
| ae2d451b RS |
1072 | (define-key hexl-mode-map "\e\C-d" 'hexl-insert-decimal-char) |
| 1073 | (define-key hexl-mode-map "\e\C-e" 'hexl-end-of-512b-page) | |
| 1074 | (define-key hexl-mode-map "\e\C-f" 'hexl-forward-short) | |
| ae2d451b RS |
1075 | (define-key hexl-mode-map "\e\C-i" 'undefined) |
| 1076 | (define-key hexl-mode-map "\e\C-j" 'undefined) | |
| 1077 | (define-key hexl-mode-map "\e\C-k" 'undefined) | |
| ae2d451b | 1078 | (define-key hexl-mode-map "\e\C-o" 'hexl-insert-octal-char) |
| ae2d451b | 1079 | (define-key hexl-mode-map "\e\C-q" 'undefined) |
| ae2d451b | 1080 | (define-key hexl-mode-map "\e\C-t" 'undefined) |
| ae2d451b | 1081 | (define-key hexl-mode-map "\e\C-x" 'hexl-insert-hex-char) |
| ae2d451b RS |
1082 | (define-key hexl-mode-map "\eb" 'hexl-backward-word) |
| 1083 | (define-key hexl-mode-map "\ec" 'undefined) | |
| 1084 | (define-key hexl-mode-map "\ed" 'undefined) | |
| ae2d451b RS |
1085 | (define-key hexl-mode-map "\ef" 'hexl-forward-word) |
| 1086 | (define-key hexl-mode-map "\eg" 'hexl-goto-hex-address) | |
| ae2d451b RS |
1087 | (define-key hexl-mode-map "\ei" 'undefined) |
| 1088 | (define-key hexl-mode-map "\ej" 'hexl-goto-address) | |
| 1089 | (define-key hexl-mode-map "\ek" 'undefined) | |
| 1090 | (define-key hexl-mode-map "\el" 'undefined) | |
| ae2d451b | 1091 | (define-key hexl-mode-map "\eq" 'undefined) |
| ae2d451b RS |
1092 | (define-key hexl-mode-map "\es" 'undefined) |
| 1093 | (define-key hexl-mode-map "\et" 'undefined) | |
| 1094 | (define-key hexl-mode-map "\eu" 'undefined) | |
| 1095 | (define-key hexl-mode-map "\ev" 'hexl-scroll-down) | |
| 1096 | (define-key hexl-mode-map "\ey" 'undefined) | |
| 1097 | (define-key hexl-mode-map "\ez" 'undefined) | |
| 1098 | (define-key hexl-mode-map "\e<" 'hexl-beginning-of-buffer) | |
| 1099 | (define-key hexl-mode-map "\e>" 'hexl-end-of-buffer) | |
| 1100 | ||
| 02aec07b EZ |
1101 | (fset 'hexl-C-c-prefix (copy-keymap mode-specific-map)) |
| 1102 | (define-key hexl-mode-map "\C-c" 'hexl-C-c-prefix) | |
| ae2d451b RS |
1103 | (define-key hexl-mode-map "\C-c\C-c" 'hexl-mode-exit) |
| 1104 | ||
| 02aec07b EZ |
1105 | (fset 'hexl-C-x-prefix (copy-keymap 'Control-X-prefix)) |
| 1106 | (define-key hexl-mode-map "\C-x" 'hexl-C-x-prefix) | |
| ae2d451b RS |
1107 | (define-key hexl-mode-map "\C-x[" 'hexl-beginning-of-1k-page) |
| 1108 | (define-key hexl-mode-map "\C-x]" 'hexl-end-of-1k-page) | |
| 1109 | (define-key hexl-mode-map "\C-x\C-p" 'undefined) | |
| 1110 | (define-key hexl-mode-map "\C-x\C-s" 'hexl-save-buffer) | |
| 1111 | (define-key hexl-mode-map "\C-x\C-t" 'undefined)) | |
| a2535589 | 1112 | |
| 61dd70aa DN |
1113 | (easy-menu-define hexl-menu hexl-mode-map "Hexl Mode menu" |
| 1114 | `("Hexl" | |
| 1115 | :help "Hexl-specific Features" | |
| 1116 | ||
| 1117 | ["Backward short" hexl-backward-short | |
| 1118 | :help "Move to left a short"] | |
| 1119 | ["Forward short" hexl-forward-short | |
| 1120 | :help "Move to right a short"] | |
| 1121 | ["Backward word" hexl-backward-short | |
| 1122 | :help "Move to left a word"] | |
| 1123 | ["Forward word" hexl-forward-short | |
| 1124 | :help "Move to right a word"] | |
| 1125 | "-" | |
| 1126 | ["Beginning of 512b page" hexl-beginning-of-512b-page | |
| 1127 | :help "Go to beginning of 512 byte boundary"] | |
| 1128 | ["End of 512b page" hexl-end-of-512b-page | |
| 1129 | :help "Go to end of 512 byte boundary"] | |
| 1130 | ["Beginning of 1K page" hexl-beginning-of-1k-page | |
| 1131 | :help "Go to beginning of 1KB boundary"] | |
| 1132 | ["End of 1K page" hexl-end-of-1k-page | |
| 1133 | :help "Go to end of 1KB boundary"] | |
| 1134 | "-" | |
| 1135 | ["Go to address" hexl-goto-address | |
| 1136 | :help "Go to hexl-mode (decimal) address"] | |
| 1137 | ["Go to address" hexl-goto-hex-address | |
| 1138 | :help "Go to hexl-mode (hex string) address"] | |
| 1139 | "-" | |
| 1140 | ["Insert decimal char" hexl-insert-decimal-char | |
| 1141 | :help "Insert a character given by its decimal code"] | |
| 1142 | ["Insert hex char" hexl-insert-hex-char | |
| 1143 | :help "Insert a character given by its hexadecimal code"] | |
| 1144 | ["Insert octal char" hexl-insert-octal-char | |
| 1145 | :help "Insert a character given by its octal code"] | |
| 1146 | "-" | |
| 1147 | ["Exit hexl mode" hexl-mode-exit | |
| 1148 | :help "Exit hexl mode returning to previous mode"])) | |
| 1149 | ||
| 19e31f7c RS |
1150 | (provide 'hexl) |
| 1151 | ||
| 37dc4767 | 1152 | ;; arch-tag: d5a7aa8a-9bce-480b-bcff-6c4c7ca5ea4a |
| 1a06eabd | 1153 | ;;; hexl.el ends here |