lisp/hexl.el

   1 ;;; hexl-mode.el --- edit a file in a hex dump format.
   2
   3 ;; Copyright (C) 1989 Free Software Foundation, Inc.
   4
   5 ;; This file is part of GNU Emacs.
   6
   7 ;; GNU Emacs is free software; you can redistribute it and/or modify
   8 ;; it under the terms of the GNU General Public License as published by
   9 ;; the Free Software Foundation; either version 1, or (at your option)
  10 ;; any later version.
  11
  12 ;; GNU Emacs is distributed in the hope that it will be useful,
  13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;; GNU General Public License for more details.
  16
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with GNU Emacs; see the file COPYING.  If not, write to
  19 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21 ;;
  22 ;; By: Keith Gabryelski (ag@wheaties.ai.mit.edu)
  23 ;;
  24 ;; This may be useful in your .emacs:
  25 ;;
  26 ;;      (autoload 'hexl-find-file "hexl"
  27 ;;        "Edit file FILENAME in hexl-mode." t)
  28 ;;
  29 ;;      (define-key global-map "\C-c\C-h" 'hexl-find-file)
  30 ;;
  31 ;; NOTE: Remember to change HEXL-PROGRAM or HEXL-OPTIONS if needed.
  32 ;;
  33 ;; Currently hexl only supports big endian hex output with 16 bit
  34 ;; grouping.
  35 ;;
  36 ;; -iso in `hexl-options' will allow iso characters to display in the
  37 ;; ASCII region of the screen (if your emacs supports this) instead of
  38 ;; changing them to dots.
  39
  40 ;;
  41 ;; vars here
  42 ;;
  43
  44 (defvar hexl-program "hexl"
  45   "The program that will hexlify and de-hexlify its stdin.
  46 `hexl-program' will always be concated with `hexl-options'
  47 and \"-de\" when dehexlfying a buffer.")
  48
  49 (defvar hexl-iso ""
  50   "If your emacs can handle ISO characters, this should be set to
  51 \"-iso\" otherwise it should be \"\".")
  52
  53 (defvar hexl-options (format "-hex %s" hexl-iso)
  54   "Options to hexl-program that suit your needs.")
  55
  56 (defvar hexlify-command (format "%s %s" hexl-program hexl-options)
  57   "The command to use to hexlify a buffer.  It is the concatination of
  58 `hexl-program' and `hexl-options'.")
  59
  60 (defvar dehexlify-command (format "%s -de %s" hexl-program hexl-options)
  61   "The command to use to unhexlify a buffer.  It is the concatination of
  62 `hexl-program', the option \"-de\", and `hexl-options'.")
  63
  64 (defvar hexl-max-address 0
  65   "Maximum offset into hexl buffer.")
  66
  67 (defvar hexl-mode-map nil)
  68
  69 ;; routines
  70
  71 (defun hexl-mode (&optional arg)
  72   "\\<hexl-mode-map>
  73 A major mode for editting binary files in hex dump format.
  74
  75 This function automatically converts a buffer into the hexl format
  76 using the function `hexlify-buffer'.
  77
  78 Each line in the buffer has an \"address\" (displayed in hexadecimal)
  79 representing the offset into the file that the characters on this line
  80 are at and 16 characters from the file (displayed as hexadecimal
  81 values grouped every 16 bits) and as their ASCII values.
  82
  83 If any of the characters (displayed as ASCII characters) are
  84 unprintable (control or meta characters) they will be replaced as
  85 periods.
  86
  87 If `hexl-mode' is invoked with an argument the buffer is assumed to be
  88 in hexl format.
  89
  90 A sample format:
  91
  92   HEX ADDR: 0001 0203 0405 0607 0809 0a0b 0c0d 0e0f     ASCII-TEXT
  93   --------  ---- ---- ---- ---- ---- ---- ---- ----  ----------------
  94   00000000: 5468 6973 2069 7320 6865 786c 2d6d 6f64  This is hexl-mod
  95   00000010: 652e 2020 4561 6368 206c 696e 6520 7265  e.  Each line re
  96   00000020: 7072 6573 656e 7473 2031 3620 6279 7465  presents 16 byte
  97   00000030: 7320 6173 2068 6578 6164 6563 696d 616c  s as hexadecimal
  98   00000040: 2041 5343 4949 0a61 6e64 2070 7269 6e74   ASCII.and print
  99   00000050: 6162 6c65 2041 5343 4949 2063 6861 7261  able ASCII chara
 100   00000060: 6374 6572 732e 2020 416e 7920 636f 6e74  cters.  Any cont
 101   00000070: 726f 6c20 6f72 206e 6f6e 2d41 5343 4949  rol or non-ASCII
 102   00000080: 2063 6861 7261 6374 6572 730a 6172 6520   characters.are
 103   00000090: 6469 7370 6c61 7965 6420 6173 2070 6572  displayed as per
 104   000000a0: 696f 6473 2069 6e20 7468 6520 7072 696e  iods in the prin
 105   000000b0: 7461 626c 6520 6368 6172 6163 7465 7220  table character
 106   000000c0: 7265 6769 6f6e 2e0a                      region..
 107
 108 Movement is as simple as movement in a normal emacs text buffer.  Most
 109 cursor movement bindings are the same (ie. Use \\[hexl-backward-char], \\[hexl-forward-char], \\[hexl-next-line], and \\[hexl-previous-line]
 110 to move the cursor left, right, down, and up).
 111
 112 Advanced cursor movement commands (ala \\[hexl-beginning-of-line], \\[hexl-end-of-line], \\[hexl-beginning-of-buffer], and \\[hexl-end-of-buffer]) are
 113 also supported.
 114
 115 There are several ways to change text in hexl mode:
 116
 117 ASCII characters (character between space (0x20) and tilde (0x7E)) are
 118 bound to self-insert so you can simply type the character and it will
 119 insert itself (actually overstrike) into the buffer.
 120
 121 \\[hexl-quoted-insert] followed by another keystroke allows you to insert the key even if
 122 it isn't bound to self-insert.  An octal number can be supplied in place
 123 of another key to insert the octal number's ASCII representation.
 124
 125 \\[hexl-insert-hex-char] will insert a given hexadecimal value (if it is between 0 and 0xFF)
 126 into the buffer at the current point.
 127
 128 \\[hexl-insert-octal-char] will insert a given octal value (if it is between 0 and 0377)
 129 into the buffer at the current point.
 130
 131 \\[hexl-insert-decimal-char] will insert a given decimal value (if it is between 0 and 255)
 132 into the buffer at the current point.
 133
 134 \\[hexl-save-buffer] will save the buffer in is binary format.
 135
 136 \\[hexl-mode-exit] will exit hexl-mode.
 137
 138 Note: \\[write-file] will write the file out in HEXL FORMAT.
 139
 140 You can use \\[hexl-find-file] to visit a file in hexl-mode.
 141
 142 \\[describe-bindings] for advanced commands."
 143   (interactive "p")
 144   (if (eq major-mode 'hexl-mode)
 145       (error "You are already in hexl mode.")
 146     (kill-all-local-variables)
 147     (make-local-variable 'hexl-mode-old-local-map)
 148     (setq hexl-mode-old-local-map (current-local-map))
 149     (use-local-map hexl-mode-map)
 150
 151     (make-local-variable 'hexl-mode-old-mode-name)
 152     (setq hexl-mode-old-mode-name mode-name)
 153     (setq mode-name "Hexl")
 154
 155     (make-local-variable 'hexl-mode-old-major-mode)
 156     (setq hexl-mode-old-major-mode major-mode)
 157     (setq major-mode 'hexl-mode)
 158
 159     (let ((modified (buffer-modified-p))
 160           (read-only buffer-read-only)
 161           (original-point (1- (point))))
 162       (if (not (or (eq arg 1) (not arg)))
 163 ;; if no argument then we guess at hexl-max-address
 164           (setq hexl-max-address (+ (* (/ (1- (buffer-size)) 68) 16) 15))
 165         (setq buffer-read-only nil)
 166         (setq hexl-max-address (1- (buffer-size)))
 167         (hexlify-buffer)
 168         (set-buffer-modified-p modified)
 169         (setq buffer-read-only read-only)
 170         (hexl-goto-address original-point)))))
 171
 172 (defun hexl-save-buffer ()
 173   "Save a hexl format buffer as binary in visited file if modified."
 174   (interactive)
 175   (set-buffer-modified-p (if (buffer-modified-p)
 176                              (save-excursion
 177                                (let ((buf (generate-new-buffer " hexl"))
 178                                      (name (buffer-name))
 179                                      (file-name (buffer-file-name))
 180                                      (start (point-min))
 181                                      (end (point-max))
 182                                      modified)
 183                                  (set-buffer buf)
 184                                  (insert-buffer-substring name start end)
 185                                  (set-buffer name)
 186                                  (dehexlify-buffer)
 187                                  (save-buffer)
 188                                  (setq modified (buffer-modified-p))
 189                                  (delete-region (point-min) (point-max))
 190                                  (insert-buffer-substring buf start end)
 191                                  (kill-buffer buf)
 192                                  modified))
 193                            (message "(No changes need to be saved)")
 194                            nil)))
 195
 196 (defun hexl-find-file (filename)
 197   "Edit file FILENAME in hexl-mode.
 198 Switch to a buffer visiting file FILENAME, creating one in none exists."
 199   (interactive "fFilename: ")
 200   (find-file filename)
 201   (if (not (eq major-mode 'hexl-mode))
 202       (hexl-mode)))
 203
 204 (defun hexl-mode-exit (&optional arg)
 205   "Exit hexl-mode returning to previous mode.
 206 With arg, don't unhexlify buffer."
 207   (interactive "p")
 208   (if (or (eq arg 1) (not arg))
 209       (let ((modified (buffer-modified-p))
 210             (read-only buffer-read-only)
 211             (original-point (1+ (hexl-current-address))))
 212         (setq buffer-read-only nil)
 213         (dehexlify-buffer)
 214         (set-buffer-modified-p modified)
 215         (setq buffer-read-only read-only)
 216         (goto-char original-point)))
 217   (setq mode-name hexl-mode-old-mode-name)
 218   (use-local-map hexl-mode-old-local-map)
 219   (setq major-mode hexl-mode-old-major-mode)
 220 ;; Kludge to update mode-line
 221   (switch-to-buffer (current-buffer))
 222 )
 223
 224 (defun hexl-current-address ()
 225   "Return current hexl-address."
 226   (interactive)
 227   (let ((current-column (- (% (point) 68) 11))
 228         (hexl-address 0))
 229     (setq hexl-address (+ (* (/ (point) 68) 16)
 230                           (/ (- current-column  (/ current-column 5)) 2)))
 231     hexl-address))
 232
 233 (defun hexl-address-to-marker (address)
 234   "Return marker for ADDRESS."
 235   (interactive "nAddress: ")
 236   (+ (* (/ address 16) 68) 11 (/ (* (% address 16) 5) 2)))
 237
 238 (defun hexl-goto-address (address)
 239   "Goto hexl-mode (decimal) address ADDRESS.
 240
 241 Signal error if ADDRESS out of range."
 242   (interactive "nAddress: ")
 243   (if (or (< address 0) (> address hexl-max-address))
 244           (error "Out of hexl region."))
 245   (goto-char (hexl-address-to-marker address)))
 246
 247 (defun hexl-goto-hex-address (hex-address)
 248   "Go to hexl-mode address (hex string) HEX-ADDRESS.
 249
 250 Signal error if HEX-ADDRESS is out of range."
 251   (interactive "sHex Address: ")
 252   (hexl-goto-address (hexl-hex-string-to-integer hex-address)))
 253
 254 (defun hexl-hex-string-to-integer (hex-string)
 255   "Return decimal integer for HEX-STRING."
 256   (interactive "sHex number: ")
 257   (let ((hex-num 0))
 258     (while (not (equal hex-string ""))
 259       (setq hex-num (+ (* hex-num 16)
 260                        (hexl-hex-char-to-integer (string-to-char hex-string))))
 261       (setq hex-string (substring hex-string 1)))
 262     hex-num))
 263
 264 (defun hexl-octal-string-to-integer (octal-string)
 265   "Return decimal integer for OCTAL-STRING."
 266   (interactive "sOctal number: ")
 267   (let ((oct-num 0))
 268     (while (not (equal octal-string ""))
 269       (setq oct-num (+ (* oct-num 8)
 270                        (hexl-oct-char-to-integer
 271                         (string-to-char octal-string))))
 272       (setq octal-string (substring octal-string 1)))
 273     oct-num))
 274
 275 ;; move point functions
 276
 277 (defun hexl-backward-char (arg)
 278   "Move to left ARG bytes (right if ARG negative) in hexl-mode."
 279   (interactive "p")
 280   (hexl-goto-address (- (hexl-current-address) arg)))
 281
 282 (defun hexl-forward-char (arg)
 283   "Move right ARG bytes (left if ARG negative) in hexl-mode."
 284   (interactive "p")
 285   (hexl-goto-address (+ (hexl-current-address) arg)))
 286
 287 (defun hexl-backward-short (arg)
 288   "Move to left ARG shorts (right if ARG negative) in hexl-mode."
 289   (interactive "p")
 290   (hexl-goto-address (let ((address (hexl-current-address)))
 291                        (if (< arg 0)
 292                            (progn
 293                              (setq arg (- arg))
 294                              (while (> arg 0)
 295                                (if (not (equal address (logior address 3)))
 296                                    (if (> address hexl-max-address)
 297                                        (progn
 298                                          (message "End of buffer.")
 299                                          (setq address hexl-max-address))
 300                                      (setq address (logior address 3)))
 301                                  (if (> address hexl-max-address)
 302                                      (progn
 303                                        (message "End of buffer.")
 304                                        (setq address hexl-max-address))
 305                                    (setq address (+ address 4))))
 306                                (setq arg (1- arg)))
 307                              (if (> address hexl-max-address)
 308                                  (progn
 309                                    (message "End of buffer.")
 310                                    (setq address hexl-max-address))
 311                                (setq address (logior address 3))))
 312                          (while (> arg 0)
 313                            (if (not (equal address (logand address -4)))
 314                                (setq address (logand address -4))
 315                              (if (not (equal address 0))
 316                                  (setq address (- address 4))
 317                                (message "Beginning of buffer.")))
 318                            (setq arg (1- arg))))
 319                        address)))
 320
 321 (defun hexl-forward-short (arg)
 322   "Move right ARG shorts (left if ARG negative) in hexl-mode."
 323   (interactive "p")
 324   (hexl-backward-short (- arg)))
 325
 326 (defun hexl-backward-word (arg)
 327   "Move to left ARG words (right if ARG negative) in hexl-mode."
 328   (interactive "p")
 329   (hexl-goto-address (let ((address (hexl-current-address)))
 330                        (if (< arg 0)
 331                            (progn
 332                              (setq arg (- arg))
 333                              (while (> arg 0)
 334                                (if (not (equal address (logior address 7)))
 335                                    (if (> address hexl-max-address)
 336                                        (progn
 337                                          (message "End of buffer.")
 338                                          (setq address hexl-max-address))
 339                                      (setq address (logior address 7)))
 340                                  (if (> address hexl-max-address)
 341                                      (progn
 342                                        (message "End of buffer.")
 343                                        (setq address hexl-max-address))
 344                                    (setq address (+ address 8))))
 345                                (setq arg (1- arg)))
 346                              (if (> address hexl-max-address)
 347                                  (progn
 348                                    (message "End of buffer.")
 349                                    (setq address hexl-max-address))
 350                                (setq address (logior address 7))))
 351                          (while (> arg 0)
 352                            (if (not (equal address (logand address -8)))
 353                                (setq address (logand address -8))
 354                              (if (not (equal address 0))
 355                                  (setq address (- address 8))
 356                                (message "Beginning of buffer.")))
 357                            (setq arg (1- arg))))
 358                        address)))
 359
 360 (defun hexl-forward-word (arg)
 361   "Move right ARG words (left if ARG negative) in hexl-mode."
 362   (interactive "p")
 363   (hexl-backward-word (- arg)))
 364
 365 (defun hexl-previous-line (arg)
 366   "Move vertically up ARG lines [16 bytes] (down if ARG negative) in hexl-mode.
 367 If there is byte at the target address move to the last byte in that line."
 368   (interactive "p")
 369   (hexl-next-line (- arg)))
 370
 371 (defun hexl-next-line (arg)
 372   "Move vertically down ARG lines [16 bytes] (up if ARG negative) in hexl-mode.
 373 If there is no byte at the target address move to the last byte in that line."
 374   (interactive "p")
 375   (hexl-goto-address (let ((address (+ (hexl-current-address) (* arg 16)) t))
 376                        (if (and (< arg 0) (< address 0))
 377                                 (progn (message "Out of hexl region.")
 378                                        (setq address
 379                                              (% (hexl-current-address) 16)))
 380                          (if (and (> address hexl-max-address)
 381                                   (< (% hexl-max-address 16) (% address 16)))
 382                              (setq address hexl-max-address)
 383                            (if (> address hexl-max-address)
 384                                (progn (message "Out of hexl region.")
 385                                       (setq
 386                                        address
 387                                        (+ (logand hexl-max-address -16)
 388                                           (% (hexl-current-address) 16)))))))
 389                        address)))
 390
 391 (defun hexl-beginning-of-buffer (arg)
 392   "Move to the beginning of the hexl buffer.
 393 Leaves `hexl-mark' at previous position.
 394 With prefix arg N, puts point N bytes of the way from the true beginning."
 395   (interactive "p")
 396   (push-mark (point))
 397   (hexl-goto-address (+ 0 (1- arg))))
 398
 399 (defun hexl-end-of-buffer (arg)
 400   "Go to `hexl-max-address' minus ARG."
 401   (interactive "p")
 402   (push-mark (point))
 403   (hexl-goto-address (- hexl-max-address (1- arg))))
 404
 405 (defun hexl-beginning-of-line ()
 406   "Goto beginning of line in hexl mode."
 407   (interactive)
 408   (goto-char (+ (* (/ (point) 68) 68) 11)))
 409
 410 (defun hexl-end-of-line ()
 411   "Goto end of line in hexl mode."
 412   (interactive)
 413   (hexl-goto-address (let ((address (logior (hexl-current-address) 15)))
 414                        (if (> address hexl-max-address)
 415                            (setq address hexl-max-address))
 416                        address)))
 417
 418 (defun hexl-scroll-down (arg)
 419   "Scroll hexl buffer window upward ARG lines; or near full window if no ARG."
 420   (interactive "P")
 421   (if (null arg)
 422       (setq arg (1- (window-height)))
 423     (setq arg (prefix-numeric-value arg)))
 424   (hexl-scroll-up (- arg)))
 425
 426 (defun hexl-scroll-up (arg)
 427   "Scroll hexl buffer window upward ARG lines; or near full window if no ARG."
 428   (interactive "P")
 429   (if (null arg)
 430       (setq arg (1- (window-height)))
 431     (setq arg (prefix-numeric-value arg)))
 432   (let ((movement (* arg 16))
 433         (address (hexl-current-address)))
 434     (if (or (> (+ address movement) hexl-max-address)
 435             (< (+ address movement) 0))
 436         (message "Out of hexl region.")
 437       (hexl-goto-address (+ address movement))
 438       (recenter 0))))
 439
 440 (defun hexl-beginning-of-1k-page ()
 441   "Goto to beginning of 1k boundry."
 442   (interactive)
 443   (hexl-goto-address (logand (hexl-current-address) -1024)))
 444
 445 (defun hexl-end-of-1k-page ()
 446   "Goto to end of 1k boundry."
 447   (interactive)
 448   (hexl-goto-address (let ((address (logior (hexl-current-address) 1023)))
 449                        (if (> address hexl-max-address)
 450                            (setq address hexl-max-address))
 451                        address)))
 452
 453 (defun hexl-beginning-of-512b-page ()
 454   "Goto to beginning of 512 byte boundry."
 455   (interactive)
 456   (hexl-goto-address (logand (hexl-current-address) -512)))
 457
 458 (defun hexl-end-of-512b-page ()
 459   "Goto to end of 512 byte boundry."
 460   (interactive)
 461   (hexl-goto-address (let ((address (logior (hexl-current-address) 511)))
 462                        (if (> address hexl-max-address)
 463                            (setq address hexl-max-address))
 464                        address)))
 465
 466 (defun hexl-quoted-insert (arg)
 467   "Read next input character and insert it.
 468 Useful for inserting control characters.
 469 You may also type up to 3 octal digits, to insert a character with that code"
 470   (interactive "p")
 471   (hexl-insert-char (read-quoted-char) arg))
 472
 473 ;00000000: 0011 2233 4455 6677 8899 aabb ccdd eeff  0123456789ABCDEF
 474
 475 (defun hexlify-buffer ()
 476   "Convert a binary buffer to hexl format"
 477   (interactive)
 478   (shell-command-on-region (point-min) (point-max) hexlify-command t))
 479
 480 (defun dehexlify-buffer ()
 481   "Convert a hexl format buffer to binary."
 482   (interactive)
 483   (shell-command-on-region (point-min) (point-max) dehexlify-command t))
 484
 485 (defun hexl-char-after-point ()
 486   "Return char for ASCII hex digits at point."
 487   (setq lh (char-after (point)))
 488   (setq rh (char-after (1+ (point))))
 489   (hexl-htoi lh rh))
 490
 491 (defun hexl-htoi (lh rh)
 492   "Hex (char) LH (char) RH to integer."
 493     (+ (* (hexl-hex-char-to-integer lh) 16)
 494        (hexl-hex-char-to-integer rh)))
 495
 496 (defun hexl-hex-char-to-integer (character)
 497   "Take a char and return its value as if it was a hex digit."
 498   (if (and (>= character ?0) (<= character ?9))
 499       (- character ?0)
 500     (let ((ch (logior character 32)))
 501       (if (and (>= ch ?a) (<= ch ?f))
 502           (- ch (- ?a 10))
 503         (error (format "Invalid hex digit `%c'." ch))))))
 504
 505 (defun hexl-oct-char-to-integer (character)
 506   "Take a char and return its value as if it was a octal digit."
 507   (if (and (>= character ?0) (<= character ?7))
 508       (- character ?0)
 509     (error (format "Invalid octal digit `%c'." character))))
 510
 511 (defun hexl-printable-character (ch)
 512   "Return a displayable string for character CH."
 513   (format "%c" (if hexl-iso
 514                    (if (or (< ch 32) (and (>= ch 127) (< ch 160)))
 515                        46
 516                      ch)
 517                  (if (or (< ch 32) (>= ch 127))
 518                      46
 519                    ch))))
 520
 521 (defun hexl-self-insert-command (arg)
 522   "Insert this character."
 523   (interactive "p")
 524   (hexl-insert-char last-command-char arg))
 525
 526 (defun hexl-insert-char (ch num)
 527   "Insert a character in a hexl buffer."
 528   (let ((address (hexl-current-address)))
 529     (while (> num 0)
 530       (delete-char 2)
 531       (insert (format "%02x" ch))
 532       (goto-char
 533        (+ (* (/ address 16) 68) 52 (% address 16)))
 534       (delete-char 1)
 535       (insert (hexl-printable-character ch))
 536       (if (eq address hexl-max-address)
 537           (hexl-goto-address address)
 538         (hexl-goto-address (1+ address)))
 539       (setq num (1- num)))))
 540
 541 ;; hex conversion
 542
 543 (defun hexl-insert-hex-char (arg)
 544   "Insert a ASCII char ARG times at point for a given hexadecimal number."
 545   (interactive "p")
 546   (let ((num (hexl-hex-string-to-integer (read-string "Hex number: "))))
 547     (if (or (> num 255) (< num 0))
 548         (error "Hex number out of range.")
 549       (hexl-insert-char num arg))))
 550
 551 (defun hexl-insert-decimal-char (arg)
 552   "Insert a ASCII char ARG times at point for a given decimal number."
 553   (interactive "p")
 554   (let ((num (string-to-int (read-string "Decimal Number: "))))
 555     (if (or (> num 255) (< num 0))
 556         (error "Decimal number out of range.")
 557       (hexl-insert-char num arg))))
 558
 559 (defun hexl-insert-octal-char (arg)
 560   "Insert a ASCII char ARG times at point for a given octal number."
 561   (interactive "p")
 562   (let ((num (hexl-octal-string-to-integer (read-string "Octal Number: "))))
 563     (if (or (> num 255) (< num 0))
 564         (error "Decimal number out of range.")
 565       (hexl-insert-char num arg))))
 566
 567 ;; startup stuff.
 568
 569 (if hexl-mode-map
 570     nil
 571     (setq hexl-mode-map (make-sparse-keymap))
 572
 573     (define-key hexl-mode-map "\C-a" 'hexl-beginning-of-line)
 574     (define-key hexl-mode-map "\C-b" 'hexl-backward-char)
 575     (define-key hexl-mode-map "\C-d" 'undefined)
 576     (define-key hexl-mode-map "\C-e" 'hexl-end-of-line)
 577     (define-key hexl-mode-map "\C-f" 'hexl-forward-char)
 578
 579     (if (not (eq (key-binding "\C-h") 'help-command))
 580         (define-key hexl-mode-map "\C-h" 'undefined))
 581
 582     (define-key hexl-mode-map "\C-i" 'hexl-self-insert-command)
 583     (define-key hexl-mode-map "\C-j" 'hexl-self-insert-command)
 584     (define-key hexl-mode-map "\C-k" 'undefined)
 585     (define-key hexl-mode-map "\C-m" 'hexl-self-insert-command)
 586     (define-key hexl-mode-map "\C-n" 'hexl-next-line)
 587     (define-key hexl-mode-map "\C-o" 'undefined)
 588     (define-key hexl-mode-map "\C-p" 'hexl-previous-line)
 589     (define-key hexl-mode-map "\C-q" 'hexl-quoted-insert)
 590     (define-key hexl-mode-map "\C-t" 'undefined)
 591     (define-key hexl-mode-map "\C-v" 'hexl-scroll-up)
 592     (define-key hexl-mode-map "\C-w" 'undefined)
 593     (define-key hexl-mode-map "\C-y" 'undefined)
 594
 595     (let ((ch 32))
 596       (while (< ch 127)
 597         (define-key hexl-mode-map (format "%c" ch) 'hexl-self-insert-command)
 598         (setq ch (1+ ch))))
 599
 600     (define-key hexl-mode-map "\e\C-a" 'hexl-beginning-of-512b-page)
 601     (define-key hexl-mode-map "\e\C-b" 'hexl-backward-short)
 602     (define-key hexl-mode-map "\e\C-c" 'undefined)
 603     (define-key hexl-mode-map "\e\C-d" 'hexl-insert-decimal-char)
 604     (define-key hexl-mode-map "\e\C-e" 'hexl-end-of-512b-page)
 605     (define-key hexl-mode-map "\e\C-f" 'hexl-forward-short)
 606     (define-key hexl-mode-map "\e\C-g" 'undefined)
 607     (define-key hexl-mode-map "\e\C-h" 'undefined)
 608     (define-key hexl-mode-map "\e\C-i" 'undefined)
 609     (define-key hexl-mode-map "\e\C-j" 'undefined)
 610     (define-key hexl-mode-map "\e\C-k" 'undefined)
 611     (define-key hexl-mode-map "\e\C-l" 'undefined)
 612     (define-key hexl-mode-map "\e\C-m" 'undefined)
 613     (define-key hexl-mode-map "\e\C-n" 'undefined)
 614     (define-key hexl-mode-map "\e\C-o" 'hexl-insert-octal-char)
 615     (define-key hexl-mode-map "\e\C-p" 'undefined)
 616     (define-key hexl-mode-map "\e\C-q" 'undefined)
 617     (define-key hexl-mode-map "\e\C-r" 'undefined)
 618     (define-key hexl-mode-map "\e\C-s" 'undefined)
 619     (define-key hexl-mode-map "\e\C-t" 'undefined)
 620     (define-key hexl-mode-map "\e\C-u" 'undefined)
 621
 622     (define-key hexl-mode-map "\e\C-w" 'undefined)
 623     (define-key hexl-mode-map "\e\C-x" 'hexl-insert-hex-char)
 624     (define-key hexl-mode-map "\e\C-y" 'undefined)
 625
 626     (define-key hexl-mode-map "\ea" 'hexl-beginning-of-1k-page)
 627     (define-key hexl-mode-map "\eb" 'hexl-backward-word)
 628     (define-key hexl-mode-map "\ec" 'undefined)
 629     (define-key hexl-mode-map "\ed" 'undefined)
 630     (define-key hexl-mode-map "\ee" 'hexl-end-of-1k-page)
 631     (define-key hexl-mode-map "\ef" 'hexl-forward-word)
 632     (define-key hexl-mode-map "\eg" 'hexl-goto-hex-address)
 633     (define-key hexl-mode-map "\eh" 'undefined)
 634     (define-key hexl-mode-map "\ei" 'undefined)
 635     (define-key hexl-mode-map "\ej" 'hexl-goto-address)
 636     (define-key hexl-mode-map "\ek" 'undefined)
 637     (define-key hexl-mode-map "\el" 'undefined)
 638     (define-key hexl-mode-map "\em" 'undefined)
 639     (define-key hexl-mode-map "\en" 'undefined)
 640     (define-key hexl-mode-map "\eo" 'undefined)
 641     (define-key hexl-mode-map "\ep" 'undefined)
 642     (define-key hexl-mode-map "\eq" 'undefined)
 643     (define-key hexl-mode-map "\er" 'undefined)
 644     (define-key hexl-mode-map "\es" 'undefined)
 645     (define-key hexl-mode-map "\et" 'undefined)
 646     (define-key hexl-mode-map "\eu" 'undefined)
 647     (define-key hexl-mode-map "\ev" 'hexl-scroll-down)
 648     (define-key hexl-mode-map "\ey" 'undefined)
 649     (define-key hexl-mode-map "\ez" 'undefined)
 650     (define-key hexl-mode-map "\e<" 'hexl-beginning-of-buffer)
 651     (define-key hexl-mode-map "\e>" 'hexl-end-of-buffer)
 652
 653     (define-key hexl-mode-map "\C-c\C-c" 'hexl-mode-exit)
 654
 655     (define-key hexl-mode-map "\C-x\C-p" 'undefined)
 656     (define-key hexl-mode-map "\C-x\C-s" 'hexl-save-buffer)
 657     (define-key hexl-mode-map "\C-x\C-t" 'undefined))
 658
 659 ;;; hexl.el ends here