;;; binhex.el -- elisp native binhex decode
-;; Copyright (c) 1998 by Shenghuo Zhu <zsh@cs.rochester.edu>
+;; Copyright (c) 1998 Free Software Foundation, Inc.
;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
;; Create Date: Oct 1, 1998
-;; $Revision: 5.3 $
-;; Time-stamp: <Tue Oct 6 23:48:38 EDT 1998 zsh>
-;; Keywords: binhex
-
-;; This file is not part of GNU Emacs, but the same permissions
-;; apply.
+;; Keywords: binhex news
+
+;; This file is part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;;; Code:
-(if (not (fboundp 'char-int))
- (fset 'char-int 'identity))
+(eval-when-compile (require 'cl))
+
+(eval-and-compile
+ (defalias 'binhex-char-int
+ (if (fboundp 'char-int)
+ 'char-int
+ 'identity)))
(defvar binhex-decoder-program "hexbin"
"*Non-nil value should be a string that names a uu decoder.
((boundp 'temporary-file-directory) temporary-file-directory)
("/tmp/")))
-(if (string-match "XEmacs" emacs-version)
+(if (featurep 'xemacs)
(defalias 'binhex-insert-char 'insert-char)
(defun binhex-insert-char (char &optional count ignored buffer)
(if (or (null buffer) (eq buffer (current-buffer)))
(insert-char char count)))))
(defvar binhex-crc-table
- [0 4129 8258 12387 16516 20645 24774 28903
- 33032 37161 41290 45419 49548 53677 57806 61935
- 4657 528 12915 8786 21173 17044 29431 25302
- 37689 33560 45947 41818 54205 50076 62463 58334
- 9314 13379 1056 5121 25830 29895 17572 21637
- 42346 46411 34088 38153 58862 62927 50604 54669
- 13907 9842 5649 1584 30423 26358 22165 18100
- 46939 42874 38681 34616 63455 59390 55197 51132
- 18628 22757 26758 30887 2112 6241 10242 14371
- 51660 55789 59790 63919 35144 39273 43274 47403
- 23285 19156 31415 27286 6769 2640 14899 10770
- 56317 52188 64447 60318 39801 35672 47931 43802
- 27814 31879 19684 23749 11298 15363 3168 7233
- 60846 64911 52716 56781 44330 48395 36200 40265
- 32407 28342 24277 20212 15891 11826 7761 3696
- 65439 61374 57309 53244 48923 44858 40793 36728
- 37256 33193 45514 41451 53516 49453 61774 57711
- 4224 161 12482 8419 20484 16421 28742 24679
- 33721 37784 41979 46042 49981 54044 58239 62302
- 689 4752 8947 13010 16949 21012 25207 29270
- 46570 42443 38312 34185 62830 58703 54572 50445
- 13538 9411 5280 1153 29798 25671 21540 17413
- 42971 47098 34713 38840 59231 63358 50973 55100
- 9939 14066 1681 5808 26199 30326 17941 22068
- 55628 51565 63758 59695 39368 35305 47498 43435
- 22596 18533 30726 26663 6336 2273 14466 10403
- 52093 56156 60223 64286 35833 39896 43963 48026
- 19061 23124 27191 31254 2801 6864 10931 14994
- 64814 60687 56684 52557 48554 44427 40424 36297
- 31782 27655 23652 19525 15522 11395 7392 3265
- 61215 65342 53085 57212 44955 49082 36825 40952
+ [0 4129 8258 12387 16516 20645 24774 28903
+ 33032 37161 41290 45419 49548 53677 57806 61935
+ 4657 528 12915 8786 21173 17044 29431 25302
+ 37689 33560 45947 41818 54205 50076 62463 58334
+ 9314 13379 1056 5121 25830 29895 17572 21637
+ 42346 46411 34088 38153 58862 62927 50604 54669
+ 13907 9842 5649 1584 30423 26358 22165 18100
+ 46939 42874 38681 34616 63455 59390 55197 51132
+ 18628 22757 26758 30887 2112 6241 10242 14371
+ 51660 55789 59790 63919 35144 39273 43274 47403
+ 23285 19156 31415 27286 6769 2640 14899 10770
+ 56317 52188 64447 60318 39801 35672 47931 43802
+ 27814 31879 19684 23749 11298 15363 3168 7233
+ 60846 64911 52716 56781 44330 48395 36200 40265
+ 32407 28342 24277 20212 15891 11826 7761 3696
+ 65439 61374 57309 53244 48923 44858 40793 36728
+ 37256 33193 45514 41451 53516 49453 61774 57711
+ 4224 161 12482 8419 20484 16421 28742 24679
+ 33721 37784 41979 46042 49981 54044 58239 62302
+ 689 4752 8947 13010 16949 21012 25207 29270
+ 46570 42443 38312 34185 62830 58703 54572 50445
+ 13538 9411 5280 1153 29798 25671 21540 17413
+ 42971 47098 34713 38840 59231 63358 50973 55100
+ 9939 14066 1681 5808 26199 30326 17941 22068
+ 55628 51565 63758 59695 39368 35305 47498 43435
+ 22596 18533 30726 26663 6336 2273 14466 10403
+ 52093 56156 60223 64286 35833 39896 43963 48026
+ 19061 23124 27191 31254 2801 6864 10931 14994
+ 64814 60687 56684 52557 48554 44427 40424 36297
+ 31782 27655 23652 19525 15522 11395 7392 3265
+ 61215 65342 53085 57212 44955 49082 36825 40952
28183 32310 20053 24180 11923 16050 3793 7920])
(defun binhex-update-crc (crc char &optional count)
(if (null count) (setq count 1))
(while (> count 0)
- (setq crc (logxor (logand (lsh crc 8) 65280)
- (aref binhex-crc-table
+ (setq crc (logxor (logand (lsh crc 8) 65280)
+ (aref binhex-crc-table
(logxor (logand (lsh crc -8) 255)
char)))
count (1- count)))
(defun binhex-string-big-endian (string)
(let ((ret 0) (i 0) (len (length string)))
(while (< i len)
- (setq ret (+ (lsh ret 8) (char-int (aref string i)))
+ (setq ret (+ (lsh ret 8) (binhex-char-int (aref string i)))
i (1+ i)))
ret))
(defun binhex-string-little-endian (string)
(let ((ret 0) (i 0) (shift 0) (len (length string)))
(while (< i len)
- (setq ret (+ ret (lsh (char-int (aref string i)) shift))
+ (setq ret (+ ret (lsh (binhex-char-int (aref string i)) shift))
i (1+ i)
shift (+ shift 8)))
ret))
(defun binhex-header (buffer)
(with-current-buffer buffer
(let ((pos (point-min)) len)
- (vector
+ (vector
(prog1
- (setq len (char-int (char-after pos)))
+ (setq len (binhex-char-int (char-after pos)))
(setq pos (1+ pos)))
(buffer-substring pos (setq pos (+ pos len)))
(prog1
- (setq len (char-int (char-after pos)))
+ (setq len (binhex-char-int (char-after pos)))
(setq pos (1+ pos)))
(buffer-substring pos (setq pos (+ pos 4)))
(buffer-substring pos (setq pos (+ pos 4)))
- (binhex-string-big-endian
+ (binhex-string-big-endian
(buffer-substring pos (setq pos (+ pos 2))))
- (binhex-string-big-endian
+ (binhex-string-big-endian
(buffer-substring pos (setq pos (+ pos 4))))
- (binhex-string-big-endian
+ (binhex-string-big-endian
(buffer-substring pos (setq pos (+ pos 4))))))))
(defvar binhex-last-char)
(defvar binhex-repeat)
(defun binhex-push-char (char &optional count ignored buffer)
- (cond
- (binhex-repeat
+ (cond
+ (binhex-repeat
(if (eq char 0)
- (binhex-insert-char (setq binhex-last-char 144) 1
+ (binhex-insert-char (setq binhex-last-char 144) 1
ignored buffer)
- (binhex-insert-char binhex-last-char (- char 1)
+ (binhex-insert-char binhex-last-char (- char 1)
ignored buffer)
(setq binhex-last-char nil))
(setq binhex-repeat nil))
(let ((work-buffer nil)
(counter 0)
(bits 0) (tmp t)
- (lim 0) inputpos
+ (lim 0) inputpos
(non-data-chars " \t\n\r:")
file-name-length data-fork-start
header
(save-excursion
(goto-char start)
(when (re-search-forward binhex-begin-line end t)
- (if (boundp 'enable-multibyte-characters)
- (let ((multibyte
- (default-value 'enable-multibyte-characters)))
- (setq-default enable-multibyte-characters nil)
- (setq work-buffer
- (generate-new-buffer " *binhex-work*"))
- (setq-default enable-multibyte-characters multibyte))
+ (let (default-enable-multibyte-characters)
(setq work-buffer (generate-new-buffer " *binhex-work*")))
- (buffer-disable-undo work-buffer)
(beginning-of-line)
(setq bits 0 counter 0)
(while tmp
(setq file-name-length (char-after (point-min))
data-fork-start (+ (point-min)
file-name-length 22))))
- (if (and (null header)
+ (if (and (null header)
(with-current-buffer work-buffer
(>= (buffer-size) data-fork-start)))
(progn
- (binhex-verify-crc work-buffer
+ (binhex-verify-crc work-buffer
1 data-fork-start)
(setq header (binhex-header work-buffer))
(if header-only (setq tmp nil counter 0))))
(setq tmp (and tmp (not (eq inputpos end)))))
(cond
((= counter 3)
- (binhex-push-char (logand (lsh bits -16) 255) 1 nil
+ (binhex-push-char (logand (lsh bits -16) 255) 1 nil
work-buffer)
(binhex-push-char (logand (lsh bits -8) 255) 1 nil
work-buffer))
((= counter 2)
- (binhex-push-char (logand (lsh bits -10) 255) 1 nil
+ (binhex-push-char (logand (lsh bits -10) 255) 1 nil
work-buffer))))
- (if header-only nil
- (binhex-verify-crc work-buffer
- data-fork-start
- (+ data-fork-start (aref header 6) 2))
- (or (markerp end) (setq end (set-marker (make-marker) end)))
- (goto-char start)
- (insert-buffer-substring work-buffer
- data-fork-start (+ data-fork-start
- (aref header 6)))
- (delete-region (point) end)))
+ (if header-only nil
+ (binhex-verify-crc work-buffer
+ data-fork-start
+ (+ data-fork-start (aref header 6) 2))
+ (or (markerp end) (setq end (set-marker (make-marker) end)))
+ (goto-char start)
+ (insert-buffer-substring work-buffer
+ data-fork-start (+ data-fork-start
+ (aref header 6)))
+ (delete-region (point) end)))
(and work-buffer (kill-buffer work-buffer)))
(if header (aref header 1))))
(defun binhex-decode-region-external (start end)
- "Binhex decode region between START and END using external decoder"
+ "Binhex decode region between START and END using external decoder."
(interactive "r")
(let ((cbuf (current-buffer)) firstline work-buffer status
- (file-name (concat binhex-temporary-file-directory
- (binhex-decode-region start end t)
- ".data")))
+ (file-name (expand-file-name
+ (concat (binhex-decode-region start end t) ".data")
+ binhex-temporary-file-directory)))
(save-excursion
(goto-char start)
(when (re-search-forward binhex-begin-line nil t)
(let ((cdir default-directory) default-process-coding-system)
(unwind-protect
(progn
- (set-buffer (setq work-buffer
+ (set-buffer (setq work-buffer
(generate-new-buffer " *binhex-work*")))
(buffer-disable-undo work-buffer)
(insert-buffer-substring cbuf firstline end)
(apply 'call-process-region
(point-min)
(point-max)
- binhex-decoder-program
+ binhex-decoder-program
nil
nil
nil
(insert-file-contents-literally file-name)))
(error "Can not binhex")))
(and work-buffer (kill-buffer work-buffer))
- (condition-case ()
- (if file-name (delete-file file-name))
- (error))
- )))
+ (ignore-errors
+ (if file-name (delete-file file-name))))))
(provide 'binhex)
;;; binhex.el ends here
-
-