code.delx.au - gnu-emacs/blob - lisp/hexl.el

   1 ;;; hexl.el --- edit a file in a hex dump format using the hexl filter
   2
   3 ;; Copyright (C) 1989, 1994, 1998, 2001, 2002, 2003, 2004,
   4 ;;   2005, 2006 Free Software Foundation, Inc.
   5
   6 ;; Author: Keith Gabryelski <ag@wheaties.ai.mit.edu>
   7 ;; Maintainer: FSF
   8 ;; Keywords: data
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software; you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation; either version 2, or (at your option)
  15 ;; any later version.
  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
  23 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  25 ;; Boston, MA 02110-1301, USA.
  26
  27 ;;; Commentary:
  28
  29 ;; This package implements a major mode for editing binary files.  It uses
  30 ;; a program called hexl, supplied with the GNU Emacs distribution, that
  31 ;; can filter a binary into an editable format or from the format back into
  32 ;; binary.  For full instructions, invoke `hexl-mode' on an empty buffer and
  33 ;; do M-x `describe-mode'.
  34 ;;
  35 ;; NOTE: Remember to change `hexl-program' or `hexl-options' if needed.
  36 ;;
  37 ;; Currently hexl only supports big endian hex output with 16 bit
  38 ;; grouping.
  39 ;;
  40 ;; -iso in `hexl-options' will allow iso characters to display in the
  41 ;; ASCII region of the screen (if your Emacs supports this) instead of
  42 ;; changing them to dots.
  43
  44 ;;; Code:
  45
  46 (require 'eldoc)
  47
  48 ;;
  49 ;; vars here
  50 ;;
  51
  52 (defgroup hexl nil
  53   "Edit a file in a hex dump format using the hexl filter."
  54   :group 'data)
  55
  56
  57 (defcustom hexl-program "hexl"
  58   "The program that will hexlify and dehexlify its stdin.
  59 `hexl-program' will always be concatenated with `hexl-options'
  60 and \"-de\" when dehexlifying a buffer."
  61   :type 'string
  62   :group 'hexl)
  63
  64 (defcustom hexl-iso ""
  65   "If your Emacs can handle ISO characters, this should be set to
  66 \"-iso\" otherwise it should be \"\"."
  67   :type 'string
  68   :group 'hexl)
  69
  70 (defcustom hexl-options (format "-hex %s" hexl-iso)
  71   "Space separated options to `hexl-program' that suit your needs.
  72 Quoting cannot be used, so the arguments cannot themselves contain spaces."
  73   :type 'string
  74   :group 'hexl)
  75
  76 (defcustom hexl-follow-ascii t
  77   "If non-nil then highlight the ASCII character corresponding to point."
  78   :type 'boolean
  79   :group 'hexl
  80   :version "20.3")
  81
  82 (defcustom hexl-mode-hook '(hexl-follow-line hexl-activate-ruler)
  83   "Normal hook run when entering Hexl mode."
  84   :type 'hook
  85   :options '(hexl-follow-line hexl-activate-ruler turn-on-eldoc-mode)
  86   :group 'hexl)
  87
  88 (defface hexl-address-region
  89   '((t (:inherit header-line)))
  90   "Face used in address area of hexl-mode buffer."
  91   :group 'hexl)
  92
  93 (defface hexl-ascii-region
  94   '((t (:inherit header-line)))
  95   "Face used in ascii area of hexl-mode buffer."
  96   :group 'hexl)
  97
  98 (defvar hexl-max-address 0
  99   "Maximum offset into hexl buffer.")
 100
 101 (defvar hexl-mode-map nil)
 102
 103 ;; Variable declarations for suppressing warnings from the byte-compiler.
 104 (defvar ruler-mode)
 105 (defvar ruler-mode-ruler-function)
 106 (defvar hl-line-mode)
 107 (defvar hl-line-range-function)
 108 (defvar hl-line-face)
 109
 110 ;; Variables where the original values are stored to.
 111 (defvar hexl-mode-old-hl-line-mode)
 112 (defvar hexl-mode-old-hl-line-range-function)
 113 (defvar hexl-mode-old-hl-line-face)
 114 (defvar hexl-mode-old-local-map)
 115 (defvar hexl-mode-old-mode-name)
 116 (defvar hexl-mode-old-major-mode)
 117 (defvar hexl-mode-old-ruler-mode)
 118 (defvar hexl-mode-old-ruler-function)
 119 (defvar hexl-mode-old-isearch-search-fun-function)
 120 (defvar hexl-mode-old-require-final-newline)
 121 (defvar hexl-mode-old-syntax-table)
 122 (defvar hexl-mode-old-font-lock-keywords)
 123
 124 (defvar hexl-ascii-overlay nil
 125   "Overlay used to highlight ASCII element corresponding to current point.")
 126 (make-variable-buffer-local 'hexl-ascii-overlay)
 127
 128 (defvar hexl-font-lock-keywords
 129   '(("^\\([0-9a-f]+:\\).\\{40\\}  \\(.+$\\)"
 130      ;; "^\\([0-9a-f]+:\\).+  \\(.+$\\)"
 131      (1 'hexl-address-region t t)
 132      (2 'hexl-ascii-region t t)))
 133   "Font lock keywords used in `hexl-mode'.")
 134
 135 ;; routines
 136
 137 (put 'hexl-mode 'mode-class 'special)
 138
 139 ;;;###autoload
 140 (defun hexl-mode (&optional arg)
 141   "\\<hexl-mode-map>A mode for editing binary files in hex dump format.
 142 This is not an ordinary major mode; it alters some aspects
 143 of the current mode's behavior, but not all; also, you can exit
 144 Hexl mode and return to the previous mode using `hexl-mode-exit'.
 145
 146 This function automatically converts a buffer into the hexl format
 147 using the function `hexlify-buffer'.
 148
 149 Each line in the buffer has an \"address\" (displayed in hexadecimal)
 150 representing the offset into the file that the characters on this line
 151 are at and 16 characters from the file (displayed as hexadecimal
 152 values grouped every 16 bits) and as their ASCII values.
 153
 154 If any of the characters (displayed as ASCII characters) are
 155 unprintable (control or meta characters) they will be replaced as
 156 periods.
 157
 158 If `hexl-mode' is invoked with an argument the buffer is assumed to be
 159 in hexl format.
 160
 161 A sample format:
 162
 163   HEX ADDR: 0001 0203 0405 0607 0809 0a0b 0c0d 0e0f     ASCII-TEXT
 164   --------  ---- ---- ---- ---- ---- ---- ---- ----  ----------------
 165   00000000: 5468 6973 2069 7320 6865 786c 2d6d 6f64  This is hexl-mod
 166   00000010: 652e 2020 4561 6368 206c 696e 6520 7265  e.  Each line re
 167   00000020: 7072 6573 656e 7473 2031 3620 6279 7465  presents 16 byte
 168   00000030: 7320 6173 2068 6578 6164 6563 696d 616c  s as hexadecimal
 169   00000040: 2041 5343 4949 0a61 6e64 2070 7269 6e74   ASCII.and print
 170   00000050: 6162 6c65 2041 5343 4949 2063 6861 7261  able ASCII chara
 171   00000060: 6374 6572 732e 2020 416e 7920 636f 6e74  cters.  Any cont
 172   00000070: 726f 6c20 6f72 206e 6f6e 2d41 5343 4949  rol or non-ASCII
 173   00000080: 2063 6861 7261 6374 6572 730a 6172 6520   characters.are
 174   00000090: 6469 7370 6c61 7965 6420 6173 2070 6572  displayed as per
 175   000000a0: 696f 6473 2069 6e20 7468 6520 7072 696e  iods in the prin
 176   000000b0: 7461 626c 6520 6368 6172 6163 7465 7220  table character
 177   000000c0: 7265 6769 6f6e 2e0a                      region..
 178
 179 Movement is as simple as movement in a normal Emacs text buffer.  Most
 180 cursor movement bindings are the same (ie. Use \\[hexl-backward-char], \\[hexl-forward-char], \\[hexl-next-line], and \\[hexl-previous-line]
 181 to move the cursor left, right, down, and up).
 182
 183 Advanced cursor movement commands (ala \\[hexl-beginning-of-line], \\[hexl-end-of-line], \\[hexl-beginning-of-buffer], and \\[hexl-end-of-buffer]) are
 184 also supported.
 185
 186 There are several ways to change text in hexl mode:
 187
 188 ASCII characters (character between space (0x20) and tilde (0x7E)) are
 189 bound to self-insert so you can simply type the character and it will
 190 insert itself (actually overstrike) into the buffer.
 191
 192 \\[hexl-quoted-insert] followed by another keystroke allows you to insert the key even if
 193 it isn't bound to self-insert.  An octal number can be supplied in place
 194 of another key to insert the octal number's ASCII representation.
 195
 196 \\[hexl-insert-hex-char] will insert a given hexadecimal value (if it is between 0 and 0xFF)
 197 into the buffer at the current point.
 198
 199 \\[hexl-insert-octal-char] will insert a given octal value (if it is between 0 and 0377)
 200 into the buffer at the current point.
 201
 202 \\[hexl-insert-decimal-char] will insert a given decimal value (if it is between 0 and 255)
 203 into the buffer at the current point.
 204
 205 \\[hexl-mode-exit] will exit hexl-mode.
 206
 207 Note: saving the file with any of the usual Emacs commands
 208 will actually convert it back to binary format while saving.
 209
 210 You can use \\[hexl-find-file] to visit a file in Hexl mode.
 211
 212 \\[describe-bindings] for advanced commands."
 213   (interactive "p")
 214   (unless (eq major-mode 'hexl-mode)
 215     (let ((modified (buffer-modified-p))
 216           (inhibit-read-only t)
 217           (original-point (- (point) (point-min))))
 218       (and (eobp) (not (bobp))
 219            (setq original-point (1- original-point)))
 220       ;; If `hexl-mode' is invoked with an argument the buffer is assumed to
 221       ;; be in hexl format.
 222       (when (memq arg '(1 nil))
 223         ;; If the buffer's EOL type is -dos, we need to account for
 224         ;; extra CR characters added when hexlify-buffer writes the
 225         ;; buffer to a file.
 226         ;; FIXME: This doesn't take into account multibyte coding systems.
 227         (when (eq (coding-system-eol-type buffer-file-coding-system) 1)
 228           (setq original-point (+ (count-lines (point-min) (point))
 229                                   original-point))
 230           (or (bolp) (setq original-point (1- original-point))))
 231         (hexlify-buffer)
 232         (restore-buffer-modified-p modified))
 233       (set (make-local-variable 'hexl-max-address)
 234            (let* ((full-lines (/ (buffer-size) 68))
 235                   (last-line (% (buffer-size) 68))
 236                   (last-line-bytes (% last-line 52)))
 237              (+ last-line-bytes (* full-lines 16) -1)))
 238       (condition-case nil
 239           (hexl-goto-address original-point)
 240         (error nil)))
 241
 242     ;; We do not turn off the old major mode; instead we just
 243     ;; override most of it.  That way, we can restore it perfectly.
 244     (make-local-variable 'hexl-mode-old-local-map)
 245     (setq hexl-mode-old-local-map (current-local-map))
 246     (use-local-map hexl-mode-map)
 247
 248     (make-local-variable 'hexl-mode-old-mode-name)
 249     (setq hexl-mode-old-mode-name mode-name)
 250     (setq mode-name "Hexl")
 251
 252     (set (make-local-variable 'hexl-mode-old-isearch-search-fun-function)
 253          isearch-search-fun-function)
 254     (set (make-local-variable 'isearch-search-fun-function)
 255          'hexl-isearch-search-function)
 256
 257     (make-local-variable 'hexl-mode-old-major-mode)
 258     (setq hexl-mode-old-major-mode major-mode)
 259     (setq major-mode 'hexl-mode)
 260
 261     (make-local-variable 'hexl-mode-old-ruler-mode)
 262     (setq hexl-mode-old-ruler-mode
 263           (and (boundp 'ruler-mode) ruler-mode))
 264
 265     (make-local-variable 'hexl-mode-old-hl-line-mode)
 266     (setq hexl-mode-old-hl-line-mode
 267           (and (boundp 'hl-line-mode) hl-line-mode))
 268
 269     (make-local-variable 'hexl-mode-old-syntax-table)
 270     (setq hexl-mode-old-syntax-table (syntax-table))
 271     (set-syntax-table (standard-syntax-table))
 272
 273     (add-hook 'write-contents-functions 'hexl-save-buffer nil t)
 274
 275     (make-local-variable 'hexl-mode-old-require-final-newline)
 276     (setq hexl-mode-old-require-final-newline require-final-newline)
 277     (make-local-variable 'require-final-newline)
 278     (setq require-final-newline nil)
 279
 280     (make-local-variable 'hexl-mode-old-font-lock-keywords)
 281     (setq hexl-mode-old-font-lock-keywords font-lock-defaults)
 282     (make-local-variable 'font-lock-defaults)
 283     (setq font-lock-defaults '(hexl-font-lock-keywords t))
 284
 285     ;; Add hooks to rehexlify or dehexlify on various events.
 286     (add-hook 'after-revert-hook 'hexl-after-revert-hook nil t)
 287
 288     (add-hook 'change-major-mode-hook 'hexl-maybe-dehexlify-buffer nil t)
 289
 290     ;; Set a callback function for eldoc.
 291     (set (make-local-variable 'eldoc-documentation-function)
 292          'hexl-print-current-point-info)
 293     (eldoc-add-command-completions "hexl-")
 294     (eldoc-remove-command "hexl-save-buffer"
 295                           "hexl-current-address")
 296
 297     (if hexl-follow-ascii (hexl-follow-ascii 1)))
 298   (run-mode-hooks 'hexl-mode-hook))
 299
 300
 301 (defun hexl-isearch-search-function ()
 302   (if (and (not isearch-regexp) (not isearch-word))
 303       (lambda (string &optional bound noerror count)
 304         (funcall
 305          (if isearch-forward 're-search-forward 're-search-backward)
 306          (let ((textre
 307                 (if (> (length string) 80)
 308                     (regexp-quote string)
 309                   (mapconcat (lambda (c) (regexp-quote (string c))) string
 310                              "\\(?:\n\\(?:[:a-f0-9]+ \\)+ \\)?"))))
 311            (if (string-match "\\` ?\\([a-f0-9]+ \\)*[a-f0-9]+ ?\\'" string)
 312                (concat textre "\\|"
 313                        (mapconcat 'regexp-quote (split-string string " ")
 314                                   " \\(?: .+\n[a-f0-9]+: \\)?"))
 315              textre))
 316          bound noerror count))
 317     (let ((isearch-search-fun-function nil))
 318       (isearch-search-fun))))
 319
 320 (defun hexl-after-revert-hook ()
 321   (setq hexl-max-address (1- (buffer-size)))
 322   (hexlify-buffer)
 323   (set-buffer-modified-p nil))
 324
 325 (defvar hexl-in-save-buffer nil)
 326
 327 (defun hexl-save-buffer ()
 328   "Save a hexl format buffer as binary in visited file if modified."
 329   (interactive)
 330   (if hexl-in-save-buffer nil
 331     (restore-buffer-modified-p
 332      (if (buffer-modified-p)
 333          (let ((buf (generate-new-buffer " hexl"))
 334                (name (buffer-name))
 335                (start (point-min))
 336                (end (point-max))
 337                modified)
 338            (with-current-buffer buf
 339              (insert-buffer-substring name start end)
 340              (set-buffer name)
 341              (dehexlify-buffer)
 342              ;; Prevent infinite recursion.
 343              (let ((hexl-in-save-buffer t))
 344                (save-buffer))
 345              (setq modified (buffer-modified-p))
 346              (delete-region (point-min) (point-max))
 347              (insert-buffer-substring buf start end)
 348              (kill-buffer buf)
 349              modified))
 350        (message "(No changes need to be saved)")
 351        nil))
 352     ;; Return t to indicate we have saved t
 353     t))
 354
 355 ;;;###autoload
 356 (defun hexl-find-file (filename)
 357   "Edit file FILENAME as a binary file in hex dump format.
 358 Switch to a buffer visiting file FILENAME, creating one if none exists,
 359 and edit the file in `hexl-mode'."
 360   (interactive
 361    (list
 362     (let ((completion-ignored-extensions nil))
 363       (read-file-name "Filename: " nil nil 'ret-must-match))))
 364   ;; Ignore the user's setting of default-major-mode.
 365   (let ((default-major-mode 'fundamental-mode))
 366     (find-file-literally filename))
 367   (if (not (eq major-mode 'hexl-mode))
 368       (hexl-mode)))
 369
 370 (defun hexl-mode-exit (&optional arg)
 371   "Exit Hexl mode, returning to previous mode.
 372 With arg, don't unhexlify buffer."
 373   (interactive "p")
 374   (if (or (eq arg 1) (not arg))
 375       (let ((modified (buffer-modified-p))
 376             (inhibit-read-only t)
 377             (original-point (1+ (hexl-current-address))))
 378         (dehexlify-buffer)
 379         (remove-hook 'write-contents-functions 'hexl-save-buffer t)
 380         (restore-buffer-modified-p modified)
 381         (goto-char original-point)
 382         ;; Maybe adjust point for the removed CR characters.
 383         (when (eq (coding-system-eol-type buffer-file-coding-system) 1)
 384           (setq original-point (- original-point
 385                                   (count-lines (point-min) (point))))
 386           (or (bobp) (setq original-point (1+ original-point))))
 387         (goto-char original-point)))
 388
 389   (remove-hook 'after-revert-hook 'hexl-after-revert-hook t)
 390   (remove-hook 'change-major-mode-hook 'hexl-maybe-dehexlify-buffer t)
 391   (remove-hook 'post-command-hook 'hexl-follow-ascii-find t)
 392   (setq hexl-ascii-overlay nil)
 393
 394   (if (and (boundp 'ruler-mode) ruler-mode (not hexl-mode-old-ruler-mode))
 395       (ruler-mode 0))
 396   (when (boundp 'hexl-mode-old-ruler-function)
 397     (setq ruler-mode-ruler-function hexl-mode-old-ruler-function))
 398
 399   (if (and (boundp 'hl-line-mode) hl-line-mode (not hexl-mode-old-hl-line-mode))
 400       (hl-line-mode 0))
 401   (when (boundp 'hexl-mode-old-hl-line-range-function)
 402     (setq hl-line-range-function hexl-mode-old-hl-line-range-function))
 403   (when (boundp hexl-mode-old-hl-line-face)
 404     (setq hl-line-face hexl-mode-old-hl-line-face))
 405
 406   (setq require-final-newline hexl-mode-old-require-final-newline)
 407   (setq mode-name hexl-mode-old-mode-name)
 408   (setq isearch-search-fun-function hexl-mode-old-isearch-search-fun-function)
 409   (use-local-map hexl-mode-old-local-map)
 410   (set-syntax-table hexl-mode-old-syntax-table)
 411   (setq font-lock-defaults hexl-mode-old-font-lock-keywords)
 412   (setq major-mode hexl-mode-old-major-mode)
 413   (force-mode-line-update))
 414
 415 (defun hexl-maybe-dehexlify-buffer ()
 416   "Convert a hexl format buffer to binary.
 417 Ask the user for confirmation."
 418   (if (y-or-n-p "Convert contents back to binary format? ")
 419       (let ((modified (buffer-modified-p))
 420             (inhibit-read-only t)
 421             (original-point (1+ (hexl-current-address))))
 422         (dehexlify-buffer)
 423         (remove-hook 'write-contents-functions 'hexl-save-buffer t)
 424         (restore-buffer-modified-p modified)
 425         (goto-char original-point))))
 426
 427 (defun hexl-current-address (&optional validate)
 428   "Return current hexl-address."
 429   (interactive)
 430   (let ((current-column (- (% (- (point) (point-min) -1) 68) 11))
 431         (hexl-address 0))
 432     (if (< current-column 0)
 433         (if validate
 434             (error "Point is not on a character in the file")
 435           (setq current-column 0)))
 436     (setq hexl-address
 437           (+ (* (/ (- (point) (point-min) -1) 68) 16)
 438              (if (>= current-column 41)
 439                  (- current-column 41)
 440                (/ (- current-column  (/ current-column 5)) 2))))
 441     (when (interactive-p)
 442       (message "Current address is %d/0x%08x" hexl-address hexl-address))
 443     hexl-address))
 444
 445 (defun hexl-print-current-point-info ()
 446   "Return current hexl-address in string.
 447 This function is intended to be used as eldoc callback."
 448   (let ((addr (hexl-current-address)))
 449     (format "Current address is %d/0x%08x" addr addr)))
 450
 451 (defun hexl-address-to-marker (address)
 452   "Return buffer position for ADDRESS."
 453   (interactive "nAddress: ")
 454   (+ (* (/ address 16) 68) 10 (point-min) (/ (* (% address 16) 5) 2)))
 455
 456 (defun hexl-goto-address (address)
 457   "Goto hexl-mode (decimal) address ADDRESS.
 458 Signal error if ADDRESS is out of range."
 459   (interactive "nAddress: ")
 460   (if (or (< address 0) (> address hexl-max-address))
 461       (error "Out of hexl region"))
 462   (goto-char (hexl-address-to-marker address)))
 463
 464 (defun hexl-goto-hex-address (hex-address)
 465   "Go to hexl-mode address (hex string) HEX-ADDRESS.
 466 Signal error if HEX-ADDRESS is out of range."
 467   (interactive "sHex Address: ")
 468   (hexl-goto-address (hexl-hex-string-to-integer hex-address)))
 469
 470 (defun hexl-hex-string-to-integer (hex-string)
 471   "Return decimal integer for HEX-STRING."
 472   (interactive "sHex number: ")
 473   (let ((hex-num 0))
 474     (while (not (equal hex-string ""))
 475       (setq hex-num (+ (* hex-num 16)
 476                        (hexl-hex-char-to-integer (string-to-char hex-string))))
 477       (setq hex-string (substring hex-string 1)))
 478     hex-num))
 479
 480 (defun hexl-octal-string-to-integer (octal-string)
 481   "Return decimal integer for OCTAL-STRING."
 482   (interactive "sOctal number: ")
 483   (let ((oct-num 0))
 484     (while (not (equal octal-string ""))
 485       (setq oct-num (+ (* oct-num 8)
 486                        (hexl-oct-char-to-integer
 487                         (string-to-char octal-string))))
 488       (setq octal-string (substring octal-string 1)))
 489     oct-num))
 490
 491 ;; move point functions
 492
 493 (defun hexl-backward-char (arg)
 494   "Move to left ARG bytes (right if ARG negative) in hexl-mode."
 495   (interactive "p")
 496   (hexl-goto-address (- (hexl-current-address) arg)))
 497
 498 (defun hexl-forward-char (arg)
 499   "Move to right ARG bytes (left if ARG negative) in hexl-mode."
 500   (interactive "p")
 501   (hexl-goto-address (+ (hexl-current-address) arg)))
 502
 503 (defun hexl-backward-short (arg)
 504   "Move to left ARG shorts (right if ARG negative) in hexl-mode."
 505   (interactive "p")
 506   (hexl-goto-address (let ((address (hexl-current-address)))
 507                        (if (< arg 0)
 508                            (progn
 509                              (setq arg (- arg))
 510                              (while (> arg 0)
 511                                (if (not (equal address (logior address 3)))
 512                                    (if (> address hexl-max-address)
 513                                        (progn
 514                                          (message "End of buffer.")
 515                                          (setq address hexl-max-address))
 516                                      (setq address (logior address 3)))
 517                                  (if (> address hexl-max-address)
 518                                      (progn
 519                                        (message "End of buffer.")
 520                                        (setq address hexl-max-address))
 521                                    (setq address (+ address 4))))
 522                                (setq arg (1- arg)))
 523                              (if (> address hexl-max-address)
 524                                  (progn
 525                                    (message "End of buffer.")
 526                                    (setq address hexl-max-address))
 527                                (setq address (logior address 3))))
 528                          (while (> arg 0)
 529                            (if (not (equal address (logand address -4)))
 530                                (setq address (logand address -4))
 531                              (if (not (equal address 0))
 532                                  (setq address (- address 4))
 533                                (message "Beginning of buffer.")))
 534                            (setq arg (1- arg))))
 535                        address)))
 536
 537 (defun hexl-forward-short (arg)
 538   "Move to right ARG shorts (left if ARG negative) in hexl-mode."
 539   (interactive "p")
 540   (hexl-backward-short (- arg)))
 541
 542 (defun hexl-backward-word (arg)
 543   "Move to left ARG words (right if ARG negative) in hexl-mode."
 544   (interactive "p")
 545   (hexl-goto-address (let ((address (hexl-current-address)))
 546                        (if (< arg 0)
 547                            (progn
 548                              (setq arg (- arg))
 549                              (while (> arg 0)
 550                                (if (not (equal address (logior address 7)))
 551                                    (if (> address hexl-max-address)
 552                                        (progn
 553                                          (message "End of buffer.")
 554                                          (setq address hexl-max-address))
 555                                      (setq address (logior address 7)))
 556                                  (if (> address hexl-max-address)
 557                                      (progn
 558                                        (message "End of buffer.")
 559                                        (setq address hexl-max-address))
 560                                    (setq address (+ address 8))))
 561                                (setq arg (1- arg)))
 562                              (if (> address hexl-max-address)
 563                                  (progn
 564                                    (message "End of buffer.")
 565                                    (setq address hexl-max-address))
 566                                (setq address (logior address 7))))
 567                          (while (> arg 0)
 568                            (if (not (equal address (logand address -8)))
 569                                (setq address (logand address -8))
 570                              (if (not (equal address 0))
 571                                  (setq address (- address 8))
 572                                (message "Beginning of buffer.")))
 573                            (setq arg (1- arg))))
 574                        address)))
 575
 576 (defun hexl-forward-word (arg)
 577   "Move to right ARG words (left if ARG negative) in hexl-mode."
 578   (interactive "p")
 579   (hexl-backward-word (- arg)))
 580
 581 (defun hexl-previous-line (arg)
 582   "Move vertically up ARG lines [16 bytes] (down if ARG negative) in hexl-mode.
 583 If there is no byte at the target address move to the last byte in that line."
 584   (interactive "p")
 585   (hexl-next-line (- arg)))
 586
 587 (defun hexl-next-line (arg)
 588   "Move vertically down ARG lines [16 bytes] (up if ARG negative) in hexl-mode.
 589 If there is no byte at the target address move to the last byte in that line."
 590   (interactive "p")
 591   (hexl-goto-address (let ((address (+ (hexl-current-address) (* arg 16))))
 592                        (if (and (< arg 0) (< address 0))
 593                                 (progn (message "Out of hexl region.")
 594                                        (setq address
 595                                              (% (hexl-current-address) 16)))
 596                          (if (and (> address hexl-max-address)
 597                                   (< (% hexl-max-address 16) (% address 16)))
 598                              (setq address hexl-max-address)
 599                            (if (> address hexl-max-address)
 600                                (progn (message "Out of hexl region.")
 601                                       (setq
 602                                        address
 603                                        (+ (logand hexl-max-address -16)
 604                                           (% (hexl-current-address) 16)))))))
 605                        address)))
 606
 607 (defun hexl-beginning-of-buffer (arg)
 608   "Move to the beginning of the hexl buffer.
 609 Leaves `hexl-mark' at previous position.
 610 With prefix arg N, puts point N bytes of the way from the true beginning."
 611   (interactive "p")
 612   (push-mark (point))
 613   (hexl-goto-address (+ 0 (1- arg))))
 614
 615 (defun hexl-end-of-buffer (arg)
 616   "Go to `hexl-max-address' minus ARG."
 617   (interactive "p")
 618   (push-mark (point))
 619   (hexl-goto-address (- hexl-max-address (1- arg))))
 620
 621 (defun hexl-beginning-of-line ()
 622   "Goto beginning of line in hexl mode."
 623   (interactive)
 624   (goto-char (+ (* (/ (point) 68) 68) 11)))
 625
 626 (defun hexl-end-of-line ()
 627   "Goto end of line in hexl mode."
 628   (interactive)
 629   (hexl-goto-address (let ((address (logior (hexl-current-address) 15)))
 630                        (if (> address hexl-max-address)
 631                            (setq address hexl-max-address))
 632                        address)))
 633
 634 (defun hexl-scroll-down (arg)
 635   "Scroll hexl buffer window upward ARG lines; or near full window if no ARG."
 636   (interactive "P")
 637   (if (null arg)
 638       (setq arg (1- (window-height)))
 639     (setq arg (prefix-numeric-value arg)))
 640   (hexl-scroll-up (- arg)))
 641
 642 (defun hexl-scroll-up (arg)
 643   "Scroll hexl buffer window upward ARG lines; or near full window if no ARG.
 644 If there's no byte at the target address, move to the first or last line."
 645   (interactive "P")
 646   (if (null arg)
 647       (setq arg (1- (window-height)))
 648     (setq arg (prefix-numeric-value arg)))
 649   (let* ((movement (* arg 16))
 650          (address (hexl-current-address))
 651          (dest (+ address movement)))
 652     (cond
 653      ;; If possible, try to stay at the same offset from the beginning
 654      ;; of the 16-byte group, even if we move to the first or last
 655      ;; group.
 656      ((and (> dest hexl-max-address)
 657            (>= (% hexl-max-address 16) (% address 16)))
 658       (setq dest (+ (logand hexl-max-address -16) (% address 16))))
 659      ((> dest hexl-max-address)
 660       (setq dest hexl-max-address))
 661      ((< dest 0)
 662       (setq dest (% address 16))))
 663     (if (/= dest (+ address movement))
 664         (message "Out of hexl region."))
 665     (hexl-goto-address dest)
 666     (recenter 0)))
 667
 668 (defun hexl-beginning-of-1k-page ()
 669   "Go to beginning of 1KB boundary."
 670   (interactive)
 671   (hexl-goto-address (logand (hexl-current-address) -1024)))
 672
 673 (defun hexl-end-of-1k-page ()
 674   "Go to end of 1KB boundary."
 675   (interactive)
 676   (hexl-goto-address (let ((address (logior (hexl-current-address) 1023)))
 677                        (if (> address hexl-max-address)
 678                            (setq address hexl-max-address))
 679                        address)))
 680
 681 (defun hexl-beginning-of-512b-page ()
 682   "Go to beginning of 512 byte boundary."
 683   (interactive)
 684   (hexl-goto-address (logand (hexl-current-address) -512)))
 685
 686 (defun hexl-end-of-512b-page ()
 687   "Go to end of 512 byte boundary."
 688   (interactive)
 689   (hexl-goto-address (let ((address (logior (hexl-current-address) 511)))
 690                        (if (> address hexl-max-address)
 691                            (setq address hexl-max-address))
 692                        address)))
 693
 694 (defun hexl-quoted-insert (arg)
 695   "Read next input character and insert it.
 696 Useful for inserting control characters and non-ASCII characters given their
 697 numerical code.
 698 You may also type octal digits, to insert a character with that code."
 699   (interactive "p")
 700   (hexl-insert-multibyte-char (read-quoted-char) arg))
 701
 702 ;00000000: 0011 2233 4455 6677 8899 aabb ccdd eeff  0123456789ABCDEF
 703
 704 ;;;###autoload
 705 (defun hexlify-buffer ()
 706   "Convert a binary buffer to hexl format.
 707 This discards the buffer's undo information."
 708   (interactive)
 709   (and buffer-undo-list
 710        (or (y-or-n-p "Converting to hexl format discards undo info; ok? ")
 711            (error "Aborted")))
 712   (setq buffer-undo-list nil)
 713   ;; Don't decode text in the ASCII part of `hexl' program output.
 714   (let ((coding-system-for-read 'raw-text)
 715         (coding-system-for-write buffer-file-coding-system)
 716         (buffer-undo-list t))
 717     (apply 'call-process-region (point-min) (point-max)
 718            (expand-file-name hexl-program exec-directory)
 719            t t nil
 720            ;; Manually encode the args, otherwise they're encoded using
 721            ;; coding-system-for-write (i.e. buffer-file-coding-system) which
 722            ;; may not be what we want (e.g. utf-16 on a non-utf-16 system).
 723            (mapcar (lambda (s)
 724                      (if (not (multibyte-string-p s)) s
 725                        (encode-coding-string s locale-coding-system)))
 726                    (split-string hexl-options)))
 727     (if (> (point) (hexl-address-to-marker hexl-max-address))
 728         (hexl-goto-address hexl-max-address))))
 729
 730 (defun dehexlify-buffer ()
 731   "Convert a hexl format buffer to binary.
 732 This discards the buffer's undo information."
 733   (interactive)
 734   (and buffer-undo-list
 735        (or (y-or-n-p "Converting from hexl format discards undo info; ok? ")
 736            (error "Aborted")))
 737   (setq buffer-undo-list nil)
 738   (let ((coding-system-for-write 'raw-text)
 739         (coding-system-for-read buffer-file-coding-system)
 740         (buffer-undo-list t))
 741     (apply 'call-process-region (point-min) (point-max)
 742            (expand-file-name hexl-program exec-directory)
 743            t t nil "-de" (split-string hexl-options))))
 744
 745 (defun hexl-char-after-point ()
 746   "Return char for ASCII hex digits at point."
 747   (hexl-htoi (char-after (point))
 748              (char-after (1+ (point)))))
 749
 750 (defun hexl-htoi (lh rh)
 751   "Hex (char) LH (char) RH to integer."
 752     (+ (* (hexl-hex-char-to-integer lh) 16)
 753        (hexl-hex-char-to-integer rh)))
 754
 755 (defun hexl-hex-char-to-integer (character)
 756   "Take a char and return its value as if it was a hex digit."
 757   (if (and (>= character ?0) (<= character ?9))
 758       (- character ?0)
 759     (let ((ch (logior character 32)))
 760       (if (and (>= ch ?a) (<= ch ?f))
 761           (- ch (- ?a 10))
 762         (error "Invalid hex digit `%c'" ch)))))
 763
 764 (defun hexl-oct-char-to-integer (character)
 765   "Take a char and return its value as if it was a octal digit."
 766   (if (and (>= character ?0) (<= character ?7))
 767       (- character ?0)
 768     (error "Invalid octal digit `%c'" character)))
 769
 770 (defun hexl-printable-character (ch)
 771   "Return a displayable string for character CH."
 772   (format "%c" (if hexl-iso
 773                    (if (or (< ch 32) (and (>= ch 127) (< ch 160)))
 774                        46
 775                      ch)
 776                  (if (or (< ch 32) (>= ch 127))
 777                      46
 778                    ch))))
 779
 780 (defun hexl-insert-multibyte-char (ch num)
 781   "Insert a possibly multibyte character CH NUM times.
 782
 783 Non-ASCII characters are first encoded with `buffer-file-coding-system',
 784 and their encoded form is inserted byte by byte."
 785   (let ((charset (char-charset ch))
 786         (coding (if (or (null buffer-file-coding-system)
 787                         ;; coding-system-type equals t means undecided.
 788                         (eq (coding-system-type buffer-file-coding-system) t))
 789                     default-buffer-file-coding-system
 790                   buffer-file-coding-system)))
 791     (cond ((and (> ch 0) (< ch 256))
 792            (hexl-insert-char ch num))
 793           ((eq charset 'unknown)
 794            (error
 795             "0x%x -- invalid character code; use \\[hexl-insert-hex-string]"
 796             ch))
 797           (t
 798            (let ((encoded (encode-coding-char ch coding))
 799                  (internal (string-as-unibyte (char-to-string ch)))
 800                  internal-hex)
 801              ;; If encode-coding-char returns nil, it means our character
 802              ;; cannot be safely encoded with buffer-file-coding-system.
 803              ;; In that case, we offer to insert the internal representation
 804              ;; of that character, byte by byte.
 805              (when (null encoded)
 806                (setq internal-hex
 807                      (mapconcat (function (lambda (c) (format "%x" c)))
 808                                 internal " "))
 809                (if (yes-or-no-p
 810                     (format
 811                      "Insert char 0x%x's internal representation \"%s\"? "
 812                      ch internal-hex))
 813                    (setq encoded internal)
 814                  (error
 815                   "Can't encode `0x%x' with this buffer's coding system; try \\[hexl-insert-hex-string]"
 816                   ch)))
 817              (while (> num 0)
 818                (mapc
 819                 (function (lambda (c) (hexl-insert-char c 1))) encoded)
 820                (setq num (1- num))))))))
 821
 822 (defun hexl-self-insert-command (arg)
 823   "Insert this character.
 824 Interactively, with a numeric argument, insert this character that many times.
 825
 826 Non-ASCII characters are first encoded with `buffer-file-coding-system',
 827 and their encoded form is inserted byte by byte."
 828   (interactive "p")
 829   (hexl-insert-multibyte-char last-command-char arg))
 830
 831 (defun hexl-insert-char (ch num)
 832   "Insert the character CH NUM times in a hexl buffer.
 833
 834 CH must be a unibyte character whose value is between 0 and 255."
 835   (if (or (< ch 0) (> ch 255))
 836       (error "Invalid character 0x%x -- must be in the range [0..255]" ch))
 837   (let ((address (hexl-current-address t)))
 838     (while (> num 0)
 839       (let ((hex-position
 840              (+ (* (/ address 16) 68)
 841                 10 (point-min)
 842                 (* 2 (% address 16))
 843                 (/ (% address 16) 2)))
 844             (ascii-position
 845              (+ (* (/ address 16) 68) 51 (point-min) (% address 16)))
 846             at-ascii-position)
 847         (if (= (point) ascii-position)
 848             (setq at-ascii-position t))
 849         (goto-char hex-position)
 850         (delete-char 2)
 851         (insert (format "%02x" ch))
 852         (goto-char ascii-position)
 853         (delete-char 1)
 854         (insert (hexl-printable-character ch))
 855         (or (eq address hexl-max-address)
 856             (setq address (1+ address)))
 857         (hexl-goto-address address)
 858         (if at-ascii-position
 859             (progn
 860               (beginning-of-line)
 861               (forward-char 51)
 862               (forward-char (% address 16)))))
 863       (setq num (1- num)))))
 864
 865 ;; hex conversion
 866
 867 (defun hexl-insert-hex-char (arg)
 868   "Insert a character given by its hexadecimal code ARG times at point."
 869   (interactive "p")
 870   (let ((num (hexl-hex-string-to-integer (read-string "Hex number: "))))
 871     (if (< num 0)
 872         (error "Hex number out of range")
 873       (hexl-insert-multibyte-char num arg))))
 874
 875 (defun hexl-insert-hex-string (str arg)
 876   "Insert hexadecimal string STR at point ARG times.
 877 Embedded whitespace, dashes, and periods in the string are ignored."
 878   (interactive "sHex string: \np")
 879   (setq str (replace-regexp-in-string "[- \t.]" "" str))
 880   (let ((chars '()))
 881     (let ((len (length str))
 882           (idx 0))
 883       (if (eq (logand len 1) 1)
 884           (let ((num (hexl-hex-string-to-integer (substring str 0 1))))
 885             (setq chars (cons num chars))
 886             (setq idx 1)))
 887       (while (< idx len)
 888         (let* ((nidx (+ idx 2))
 889                (num (hexl-hex-string-to-integer (substring str idx nidx))))
 890           (setq chars (cons num chars))
 891           (setq idx nidx))))
 892     (setq chars (nreverse chars))
 893     (while (> arg 0)
 894       (let ((chars chars))
 895         (while chars
 896           (hexl-insert-char (car chars) 1)
 897           (setq chars (cdr chars))))
 898       (setq arg (- arg 1)))))
 899
 900 (defun hexl-insert-decimal-char (arg)
 901   "Insert a character given by its decimal code ARG times at point."
 902   (interactive "p")
 903   (let ((num (string-to-number (read-string "Decimal Number: "))))
 904     (if (< num 0)
 905         (error "Decimal number out of range")
 906       (hexl-insert-multibyte-char num arg))))
 907
 908 (defun hexl-insert-octal-char (arg)
 909   "Insert a character given by its octal code ARG times at point."
 910   (interactive "p")
 911   (let ((num (hexl-octal-string-to-integer (read-string "Octal Number: "))))
 912     (if (< num 0)
 913         (error "Decimal number out of range")
 914       (hexl-insert-multibyte-char num arg))))
 915
 916 (defun hexl-follow-ascii (&optional arg)
 917   "Toggle following ASCII in Hexl buffers.
 918 With prefix ARG, turn on following if and only if ARG is positive.
 919 When following is enabled, the ASCII character corresponding to the
 920 element under the point is highlighted.
 921 Customize the variable `hexl-follow-ascii' to disable this feature."
 922   (interactive "P")
 923   (let ((on-p (if arg
 924                   (> (prefix-numeric-value arg) 0)
 925                (not hexl-ascii-overlay))))
 926
 927     (if on-p
 928       ;; turn it on
 929       (if (not hexl-ascii-overlay)
 930           (progn
 931             (setq hexl-ascii-overlay (make-overlay 1 1)
 932                   hexl-follow-ascii t)
 933             (overlay-put hexl-ascii-overlay 'face 'highlight)
 934             (add-hook 'post-command-hook 'hexl-follow-ascii-find nil t)))
 935       ;; turn it off
 936       (if hexl-ascii-overlay
 937           (progn
 938             (delete-overlay hexl-ascii-overlay)
 939             (setq hexl-ascii-overlay nil
 940                   hexl-follow-ascii nil)
 941             (remove-hook 'post-command-hook 'hexl-follow-ascii-find t)
 942             )))))
 943
 944 (defun hexl-activate-ruler ()
 945   "Activate `ruler-mode'."
 946   (require 'ruler-mode)
 947   (unless (boundp 'hexl-mode-old-ruler-function)
 948     (set (make-local-variable 'hexl-mode-old-ruler-function)
 949          ruler-mode-ruler-function))
 950   (set (make-local-variable 'ruler-mode-ruler-function)
 951        'hexl-mode-ruler)
 952   (ruler-mode 1))
 953
 954 (defun hexl-follow-line ()
 955   "Activate `hl-line-mode'."
 956   (require 'hl-line)
 957   (unless (boundp 'hexl-mode-old-hl-line-range-function)
 958     (set (make-local-variable 'hexl-mode-old-hl-line-range-function)
 959          hl-line-range-function))
 960   (unless (boundp 'hexl-mode-old-hl-line-face)
 961     (set (make-local-variable 'hexl-mode-old-hl-line-face)
 962          hl-line-face))
 963   (set (make-local-variable 'hl-line-range-function)
 964        'hexl-highlight-line-range)
 965   (set (make-local-variable 'hl-line-face)
 966        'highlight)
 967   (hl-line-mode 1))
 968
 969 (defun hexl-highlight-line-range ()
 970   "Return the range of address region for the point.
 971 This function is assumed to be used as callback function for `hl-line-mode'."
 972   (cons
 973    (line-beginning-position)
 974    ;; 9 stands for (length "87654321:")
 975    (+ (line-beginning-position) 9)))
 976
 977 (defun hexl-follow-ascii-find ()
 978   "Find and highlight the ASCII element corresponding to current point."
 979   (let ((pos (+ 51
 980                 (- (point) (current-column))
 981                 (mod (hexl-current-address) 16))))
 982     (move-overlay hexl-ascii-overlay pos (1+ pos))
 983     ))
 984
 985 (defun hexl-mode-ruler ()
 986   "Return a string ruler for hexl mode."
 987   (let* ((highlight (mod (hexl-current-address) 16))
 988          (s " 87654321  0011 2233 4455 6677 8899 aabb ccdd eeff  0123456789abcdef")
 989          (pos 0))
 990     (set-text-properties 0 (length s) nil s)
 991     ;; Turn spaces in the header into stretch specs so they work
 992     ;; regardless of the header-line face.
 993     (while (string-match "[ \t]+" s pos)
 994       (setq pos (match-end 0))
 995       (put-text-property (match-beginning 0) pos 'display
 996                          ;; Assume fixed-size chars
 997                          `(space :align-to ,(1- pos))
 998                          s))
 999     ;; Highlight the current column.
1000     (put-text-property (+ 11 (/ (* 5 highlight) 2))
1001                        (+ 13 (/ (* 5 highlight) 2))
1002                        'face 'highlight s)
1003     ;; Highlight the current ascii column
1004     (put-text-property (+ 13 39 highlight) (+ 13 40 highlight)
1005                        'face 'highlight s)
1006     s))
1007
1008 ;; startup stuff.
1009
1010 (if hexl-mode-map
1011     nil
1012   (setq hexl-mode-map (make-keymap))
1013   ;; Make all self-inserting keys go through hexl-self-insert-command,
1014   ;; because we need to convert them to unibyte characters before
1015   ;; inserting them into the buffer.
1016   (define-key hexl-mode-map [remap self-insert-command] 'hexl-self-insert-command)
1017
1018   (define-key hexl-mode-map "\C-m" 'hexl-self-insert-command)
1019   (define-key hexl-mode-map [left] 'hexl-backward-char)
1020   (define-key hexl-mode-map [right] 'hexl-forward-char)
1021   (define-key hexl-mode-map [up] 'hexl-previous-line)
1022   (define-key hexl-mode-map [down] 'hexl-next-line)
1023   (define-key hexl-mode-map [M-left] 'hexl-backward-short)
1024   (define-key hexl-mode-map [?\e left] 'hexl-backward-short)
1025   (define-key hexl-mode-map [M-right] 'hexl-forward-short)
1026   (define-key hexl-mode-map [?\e right] 'hexl-forward-short)
1027   (define-key hexl-mode-map [next] 'hexl-scroll-up)
1028   (define-key hexl-mode-map [prior] 'hexl-scroll-down)
1029   (define-key hexl-mode-map [home] 'hexl-beginning-of-line)
1030   (define-key hexl-mode-map [end] 'hexl-end-of-line)
1031   (define-key hexl-mode-map [C-home] 'hexl-beginning-of-buffer)
1032   (define-key hexl-mode-map [C-end] 'hexl-end-of-buffer)
1033   (define-key hexl-mode-map [deletechar] 'undefined)
1034   (define-key hexl-mode-map [deleteline] 'undefined)
1035   (define-key hexl-mode-map [insertline] 'undefined)
1036   (define-key hexl-mode-map [S-delete] 'undefined)
1037   (define-key hexl-mode-map "\177" 'undefined)
1038
1039   (define-key hexl-mode-map "\C-a" 'hexl-beginning-of-line)
1040   (define-key hexl-mode-map "\C-b" 'hexl-backward-char)
1041   (define-key hexl-mode-map "\C-d" 'undefined)
1042   (define-key hexl-mode-map "\C-e" 'hexl-end-of-line)
1043   (define-key hexl-mode-map "\C-f" 'hexl-forward-char)
1044
1045   (if (not (memq (key-binding (char-to-string help-char))
1046                  '(help-command ehelp-command)))
1047       (define-key hexl-mode-map (char-to-string help-char) 'undefined))
1048
1049   (define-key hexl-mode-map "\C-k" 'undefined)
1050   (define-key hexl-mode-map "\C-n" 'hexl-next-line)
1051   (define-key hexl-mode-map "\C-o" 'undefined)
1052   (define-key hexl-mode-map "\C-p" 'hexl-previous-line)
1053   (define-key hexl-mode-map "\C-q" 'hexl-quoted-insert)
1054   (define-key hexl-mode-map "\C-t" 'undefined)
1055   (define-key hexl-mode-map "\C-v" 'hexl-scroll-up)
1056   (define-key hexl-mode-map "\C-w" 'undefined)
1057   (define-key hexl-mode-map "\C-y" 'undefined)
1058
1059   (fset 'hexl-ESC-prefix (copy-keymap 'ESC-prefix))
1060   (define-key hexl-mode-map "\e" 'hexl-ESC-prefix)
1061   (define-key hexl-mode-map "\e\C-a" 'hexl-beginning-of-512b-page)
1062   (define-key hexl-mode-map "\e\C-b" 'hexl-backward-short)
1063   (define-key hexl-mode-map "\e\C-d" 'hexl-insert-decimal-char)
1064   (define-key hexl-mode-map "\e\C-e" 'hexl-end-of-512b-page)
1065   (define-key hexl-mode-map "\e\C-f" 'hexl-forward-short)
1066   (define-key hexl-mode-map "\e\C-i" 'undefined)
1067   (define-key hexl-mode-map "\e\C-j" 'undefined)
1068   (define-key hexl-mode-map "\e\C-k" 'undefined)
1069   (define-key hexl-mode-map "\e\C-o" 'hexl-insert-octal-char)
1070   (define-key hexl-mode-map "\e\C-q" 'undefined)
1071   (define-key hexl-mode-map "\e\C-t" 'undefined)
1072   (define-key hexl-mode-map "\e\C-x" 'hexl-insert-hex-char)
1073   (define-key hexl-mode-map "\eb" 'hexl-backward-word)
1074   (define-key hexl-mode-map "\ec" 'undefined)
1075   (define-key hexl-mode-map "\ed" 'undefined)
1076   (define-key hexl-mode-map "\ef" 'hexl-forward-word)
1077   (define-key hexl-mode-map "\eg" 'hexl-goto-hex-address)
1078   (define-key hexl-mode-map "\ei" 'undefined)
1079   (define-key hexl-mode-map "\ej" 'hexl-goto-address)
1080   (define-key hexl-mode-map "\ek" 'undefined)
1081   (define-key hexl-mode-map "\el" 'undefined)
1082   (define-key hexl-mode-map "\eq" 'undefined)
1083   (define-key hexl-mode-map "\es" 'undefined)
1084   (define-key hexl-mode-map "\et" 'undefined)
1085   (define-key hexl-mode-map "\eu" 'undefined)
1086   (define-key hexl-mode-map "\ev" 'hexl-scroll-down)
1087   (define-key hexl-mode-map "\ey" 'undefined)
1088   (define-key hexl-mode-map "\ez" 'undefined)
1089   (define-key hexl-mode-map "\e<" 'hexl-beginning-of-buffer)
1090   (define-key hexl-mode-map "\e>" 'hexl-end-of-buffer)
1091
1092   (fset 'hexl-C-c-prefix (copy-keymap mode-specific-map))
1093   (define-key hexl-mode-map "\C-c" 'hexl-C-c-prefix)
1094   (define-key hexl-mode-map "\C-c\C-c" 'hexl-mode-exit)
1095
1096   (fset 'hexl-C-x-prefix (copy-keymap 'Control-X-prefix))
1097   (define-key hexl-mode-map "\C-x" 'hexl-C-x-prefix)
1098   (define-key hexl-mode-map "\C-x[" 'hexl-beginning-of-1k-page)
1099   (define-key hexl-mode-map "\C-x]" 'hexl-end-of-1k-page)
1100   (define-key hexl-mode-map "\C-x\C-p" 'undefined)
1101   (define-key hexl-mode-map "\C-x\C-s" 'hexl-save-buffer)
1102   (define-key hexl-mode-map "\C-x\C-t" 'undefined))
1103
1104 (provide 'hexl)
1105
1106 ;; arch-tag: d5a7aa8a-9bce-480b-bcff-6c4c7ca5ea4a
1107 ;;; hexl.el ends here