;;; hexl.el --- edit a file in a hex dump format using the hexl filter
-;; Copyright (C) 1989, 1994, 1998, 2001, 2002, 2003 Free Software Foundation, Inc.
+;; Copyright (C) 1989, 1994, 1998, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
;; Author: Keith Gabryelski <ag@wheaties.ai.mit.edu>
;; Maintainer: FSF
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Commentary:
;;; Code:
+(require 'eldoc)
+
;;
;; vars here
;;
:group 'hexl
:version "20.3")
+(defcustom hexl-mode-hook '(hexl-follow-line hexl-activate-ruler)
+ "Normal hook run when entering Hexl mode."
+ :type 'hook
+ :options '(hexl-follow-line hexl-activate-ruler turn-on-eldoc-mode)
+ :group 'hexl)
+
+(defface hexl-address-area
+ '((t (:inherit header-line)))
+ "Face used in address are of hexl-mode buffer."
+ :group 'hexl)
+
+(defface hexl-ascii-area
+ '((t (:inherit header-line)))
+ "Face used in ascii are of hexl-mode buffer."
+ :group 'hexl)
+
(defvar hexl-max-address 0
"Maximum offset into hexl buffer.")
(defvar hexl-mode-map nil)
+(defvar ruler-mode)
+(defvar ruler-mode-ruler-function)
+(defvar hl-line-mode)
+
+(defvar hexl-mode-old-hl-line-mode)
(defvar hexl-mode-old-local-map)
(defvar hexl-mode-old-mode-name)
(defvar hexl-mode-old-major-mode)
+(defvar hexl-mode-old-ruler-mode)
(defvar hexl-mode-old-isearch-search-fun-function)
(defvar hexl-mode-old-require-final-newline)
(defvar hexl-mode-old-syntax-table)
+(defvar hexl-mode-old-font-lock-keywords)
(defvar hexl-ascii-overlay nil
"Overlay used to highlight ASCII element corresponding to current point.")
(make-variable-buffer-local 'hexl-ascii-overlay)
+(defvar hexl-font-lock-keywords
+ '(("^\\([0-9a-f]+:\\).\\{40\\} \\(.+$\\)"
+ ;; "^\\([0-9a-f]+:\\).+ \\(.+$\\)"
+ (1 'hexl-address-area t t)
+ (2 'hexl-ascii-area t t)))
+ "Font lock keywords used in `hexl-mode'.")
+
;; routines
(put 'hexl-mode 'mode-class 'special)
00000050: 6162 6c65 2041 5343 4949 2063 6861 7261 able ASCII chara
00000060: 6374 6572 732e 2020 416e 7920 636f 6e74 cters. Any cont
00000070: 726f 6c20 6f72 206e 6f6e 2d41 5343 4949 rol or non-ASCII
- 00000080: 2063 6861 7261 6374 6572 730a 6172 6520 characters.are
+ 00000080: 2063 6861 7261 6374 6572 730a 6172 6520 characters.are
00000090: 6469 7370 6c61 7965 6420 6173 2070 6572 displayed as per
000000a0: 696f 6473 2069 6e20 7468 6520 7072 696e iods in the prin
- 000000b0: 7461 626c 6520 6368 6172 6163 7465 7220 table character
+ 000000b0: 7461 626c 6520 6368 6172 6163 7465 7220 table character
000000c0: 7265 6769 6f6e 2e0a region..
Movement is as simple as movement in a normal emacs text buffer. Most
(set-buffer-modified-p modified))
(make-local-variable 'hexl-max-address)
(setq hexl-max-address max-address)
- (hexl-goto-address original-point))
+ (condition-case nil
+ (hexl-goto-address original-point)
+ (error nil)))
;; We do not turn off the old major mode; instead we just
;; override most of it. That way, we can restore it perfectly.
(setq hexl-mode-old-major-mode major-mode)
(setq major-mode 'hexl-mode)
+ (make-local-variable 'hexl-mode-old-ruler-mode)
+ (setq hexl-mode-old-ruler-mode
+ (and (boundp 'ruler-mode) ruler-mode))
+
+ (make-local-variable 'hexl-mode-old-hl-line-mode)
+ (setq hexl-mode-old-hl-line-mode
+ (and (boundp 'hl-line-mode) hl-line-mode))
+
(make-local-variable 'hexl-mode-old-syntax-table)
(setq hexl-mode-old-syntax-table (syntax-table))
(set-syntax-table (standard-syntax-table))
(make-local-variable 'require-final-newline)
(setq require-final-newline nil)
+ (make-local-variable 'hexl-mode-old-font-lock-keywords)
+ (setq hexl-mode-old-font-lock-keywords font-lock-defaults)
+ (make-local-variable 'font-lock-defaults)
+ (setq font-lock-defaults '(hexl-font-lock-keywords t))
+
;; Add hooks to rehexlify or dehexlify on various events.
(add-hook 'after-revert-hook 'hexl-after-revert-hook nil t)
(add-hook 'change-major-mode-hook 'hexl-maybe-dehexlify-buffer nil t)
+ ;; Set a callback function for eldoc.
+ (set (make-local-variable 'eldoc-documentation-function)
+ 'hexl-print-current-point-info)
+ (eldoc-add-command-completions "hexl-")
+ (eldoc-remove-command "hexl-save-buffer"
+ "hexl-current-address")
+
(if hexl-follow-ascii (hexl-follow-ascii 1)))
- (run-hooks 'hexl-mode-hook))
+ (run-mode-hooks 'hexl-mode-hook))
(defun hexl-isearch-search-function ()
(list
(let ((completion-ignored-extensions nil))
(read-file-name "Filename: " nil nil 'ret-must-match))))
- (find-file-literally filename)
+ ;; Ignore the user's setting of default-major-mode.
+ (let ((default-major-mode 'fundamental-mode))
+ (find-file-literally filename))
(if (not (eq major-mode 'hexl-mode))
(hexl-mode)))
(remove-hook 'post-command-hook 'hexl-follow-ascii-find t)
(setq hexl-ascii-overlay nil)
+ (if (and (boundp 'ruler-mode) ruler-mode (not hexl-mode-old-ruler-mode))
+ (ruler-mode 0))
+ (if (and (boundp 'hl-line-mode) hl-line-mode (not hexl-mode-old-hl-line-mode))
+ (hl-line-mode 0))
(setq require-final-newline hexl-mode-old-require-final-newline)
(setq mode-name hexl-mode-old-mode-name)
(setq isearch-search-fun-function hexl-mode-old-isearch-search-fun-function)
(use-local-map hexl-mode-old-local-map)
(set-syntax-table hexl-mode-old-syntax-table)
+ (setq font-lock-defaults hexl-mode-old-font-lock-keywords)
(setq major-mode hexl-mode-old-major-mode)
(force-mode-line-update))
(- current-column 41)
(/ (- current-column (/ current-column 5)) 2))))
(when (interactive-p)
- (message "Current address is %d" hexl-address))
+ (message "Current address is %d/0x%08x" hexl-address hexl-address))
hexl-address))
+(defun hexl-print-current-point-info ()
+ "Return current hexl-address in string.
+This function is indented to be used as eldoc callback."
+ (let ((addr (hexl-current-address)))
+ (format "Current address is %d/0x%08x" addr addr)))
+
(defun hexl-address-to-marker (address)
"Return buffer position for ADDRESS."
(interactive "nAddress: ")
Signal error if ADDRESS out of range."
(interactive "nAddress: ")
(if (or (< address 0) (> address hexl-max-address))
- (error "Out of hexl region"))
+ (error "Out of hexl region"))
(goto-char (hexl-address-to-marker address)))
(defun hexl-goto-hex-address (hex-address)
CH must be a unibyte character whose value is between 0 and 255."
(if (or (< ch 0) (> ch 255))
- (error "Invalid character 0x%x -- must be in the range [0..255]"))
+ (error "Invalid character 0x%x -- must be in the range [0..255]" ch))
(let ((address (hexl-current-address t)))
(while (> num 0)
(let ((hex-position
(defun hexl-insert-decimal-char (arg)
"Insert a character given by its decimal code ARG times at point."
(interactive "p")
- (let ((num (string-to-int (read-string "Decimal Number: "))))
+ (let ((num (string-to-number (read-string "Decimal Number: "))))
(if (< num 0)
(error "Decimal number out of range")
(hexl-insert-multibyte-char num arg))))
element under the point is highlighted.
Customize the variable `hexl-follow-ascii' to disable this feature."
(interactive "P")
- (let ((on-p (if arg
+ (let ((on-p (if arg
(> (prefix-numeric-value arg) 0)
(not hexl-ascii-overlay))))
(remove-hook 'post-command-hook 'hexl-follow-ascii-find t)
)))))
+(defun hexl-activate-ruler ()
+ "Activate `ruler-mode'"
+ (require 'ruler-mode)
+ (set (make-local-variable 'ruler-mode-ruler-function)
+ 'hexl-mode-ruler)
+ (ruler-mode 1))
+
+(defun hexl-follow-line ()
+ "Activate `hl-line-mode'"
+ (require 'frame)
+ (require 'hl-line)
+ (with-no-warnings
+ (set (make-local-variable 'hl-line-range-function)
+ 'hexl-highlight-line-range)
+ (set (make-local-variable 'hl-line-face)
+ 'highlight))
+ (hl-line-mode 1))
+
+(defun hexl-highlight-line-range ()
+ "Return the range of address area for the point.
+This function is assumed to be used as call back function for `hl-line-mode'."
+ (cons
+ (line-beginning-position)
+ ;; 9 stands for (length "87654321:")
+ (+ (line-beginning-position) 9)))
+
(defun hexl-follow-ascii-find ()
"Find and highlight the ASCII element corresponding to current point."
(let ((pos (+ 51
(move-overlay hexl-ascii-overlay pos (1+ pos))
))
+(defun hexl-mode-ruler ()
+ "Return a string ruler for hexl mode."
+ (let* ((highlight (mod (hexl-current-address) 16))
+ (s " 87654321 0011 2233 4455 6677 8899 aabb ccdd eeff 0123456789abcdef")
+ (pos 0))
+ (set-text-properties 0 (length s) nil s)
+ ;; Turn spaces in the header into stretch specs so they work
+ ;; regardless of the header-line face.
+ (while (string-match "[ \t]+" s pos)
+ (setq pos (match-end 0))
+ (put-text-property (match-beginning 0) pos 'display
+ ;; Assume fixed-size chars
+ `(space :align-to ,(1- pos))
+ s))
+ ;; Highlight the current column.
+ (put-text-property (+ 11 (/ (* 5 highlight) 2))
+ (+ 13 (/ (* 5 highlight) 2))
+ 'face 'highlight s)
+ ;; Highlight the current ascii column
+ (put-text-property (+ 13 39 highlight) (+ 13 40 highlight)
+ 'face 'highlight s)
+ s))
+
;; startup stuff.
(if hexl-mode-map
;; inserting them into the buffer.
(define-key hexl-mode-map [remap self-insert-command] 'hexl-self-insert-command)
+ (define-key hexl-mode-map "\C-m" 'hexl-self-insert-command)
(define-key hexl-mode-map [left] 'hexl-backward-char)
(define-key hexl-mode-map [right] 'hexl-forward-char)
(define-key hexl-mode-map [up] 'hexl-previous-line)
(define-key hexl-mode-map [down] 'hexl-next-line)
(define-key hexl-mode-map [M-left] 'hexl-backward-short)
+ (define-key hexl-mode-map [?\e left] 'hexl-backward-short)
(define-key hexl-mode-map [M-right] 'hexl-forward-short)
+ (define-key hexl-mode-map [?\e right] 'hexl-forward-short)
(define-key hexl-mode-map [next] 'hexl-scroll-up)
(define-key hexl-mode-map [prior] 'hexl-scroll-down)
(define-key hexl-mode-map [home] 'hexl-beginning-of-line)
(provide 'hexl)
+;;; arch-tag: d5a7aa8a-9bce-480b-bcff-6c4c7ca5ea4a
;;; hexl.el ends here