[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Emacs-diffs] Changes to binhex.el
|
From: |
Glenn Morris |
|
Subject: |
[Emacs-diffs] Changes to binhex.el |
|
Date: |
Sun, 02 Dec 2007 18:47:52 +0000 |
CVSROOT: /sources/emacs
Module name: emacs
Changes by: Glenn Morris <gm> 07/12/02 18:47:51
Index: binhex.el
===================================================================
RCS file: binhex.el
diff -N binhex.el
--- binhex.el 28 Oct 2007 09:18:34 -0000 1.15
+++ /dev/null 1 Jan 1970 00:00:00 -0000
@@ -1,328 +0,0 @@
-;;; binhex.el --- elisp native binhex decode
-
-;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-;; 2005, 2006, 2007 Free Software Foundation, Inc.
-
-;; Author: Shenghuo Zhu <address@hidden>
-;; 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
-;; the Free Software Foundation; either version 3, or (at your option)
-;; any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;; GNU General Public License for more details.
-
-;; 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., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
-
-;;; Commentary:
-
-;;; Code:
-
-(eval-when-compile (require 'cl))
-
-(eval-and-compile
- (defalias 'binhex-char-int
- (if (fboundp 'char-int)
- 'char-int
- 'identity)))
-
-(defcustom binhex-decoder-program "hexbin"
- "*Non-nil value should be a string that names a binhex decoder.
-The program should expect to read binhex data on its standard
-input and write the converted data to its standard output."
- :type 'string
- :group 'gnus-extract)
-
-(defcustom binhex-decoder-switches '("-d")
- "*List of command line flags passed to the command `binhex-decoder-program'."
- :group 'gnus-extract
- :type '(repeat string))
-
-(defcustom binhex-use-external
- (executable-find binhex-decoder-program)
- "*Use external binhex program."
- :version "22.1"
- :group 'gnus-extract
- :type 'boolean)
-
-(defconst binhex-alphabet-decoding-alist
- '(( ?\! . 0) ( ?\" . 1) ( ?\# . 2) ( ?\$ . 3) ( ?\% . 4) ( ?\& . 5)
- ( ?\' . 6) ( ?\( . 7) ( ?\) . 8) ( ?\* . 9) ( ?\+ . 10) ( ?\, . 11)
- ( ?\- . 12) ( ?0 . 13) ( ?1 . 14) ( ?2 . 15) ( ?3 . 16) ( ?4 . 17)
- ( ?5 . 18) ( ?6 . 19) ( ?8 . 20) ( ?9 . 21) ( ?@ . 22) ( ?A . 23)
- ( ?B . 24) ( ?C . 25) ( ?D . 26) ( ?E . 27) ( ?F . 28) ( ?G . 29)
- ( ?H . 30) ( ?I . 31) ( ?J . 32) ( ?K . 33) ( ?L . 34) ( ?M . 35)
- ( ?N . 36) ( ?P . 37) ( ?Q . 38) ( ?R . 39) ( ?S . 40) ( ?T . 41)
- ( ?U . 42) ( ?V . 43) ( ?X . 44) ( ?Y . 45) ( ?Z . 46) ( ?\[ . 47)
- ( ?\` . 48) ( ?a . 49) ( ?b . 50) ( ?c . 51) ( ?d . 52) ( ?e . 53)
- ( ?f . 54) ( ?h . 55) ( ?i . 56) ( ?j . 57) ( ?k . 58) ( ?l . 59)
- ( ?m . 60) ( ?p . 61) ( ?q . 62) ( ?r . 63)))
-
-(defun binhex-char-map (char)
- (cdr (assq char binhex-alphabet-decoding-alist)))
-
-;;;###autoload
-(defconst binhex-begin-line
- "^:...............................................................$")
-(defconst binhex-body-line
- "^[^:]...............................................................$")
-(defconst binhex-end-line ":$")
-
-(defvar binhex-temporary-file-directory
- (cond ((fboundp 'temp-directory) (temp-directory))
- ((boundp 'temporary-file-directory) temporary-file-directory)
- ("/tmp/")))
-
-(eval-and-compile
- (defalias 'binhex-insert-char
- (if (featurep 'xemacs)
- 'insert-char
- (lambda (char &optional count ignored buffer)
- "Insert COUNT copies of CHARACTER into BUFFER."
- (if (or (null buffer) (eq buffer (current-buffer)))
- (insert-char char count)
- (with-current-buffer 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
- 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
- (logxor (logand (lsh crc -8) 255)
- char)))
- count (1- count)))
- crc)
-
-(defun binhex-verify-crc (buffer start end)
- (with-current-buffer buffer
- (let ((pos start) (crc 0) (last (- end 2)))
- (while (< pos last)
- (setq crc (binhex-update-crc crc (char-after pos))
- pos (1+ pos)))
- (if (= crc (binhex-string-big-endian (buffer-substring last end)))
- nil
- (error "CRC error")))))
-
-(defun binhex-string-big-endian (string)
- (let ((ret 0) (i 0) (len (length string)))
- (while (< i len)
- (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 (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
- (prog1
- (setq len (binhex-char-int (char-after pos)))
- (setq pos (1+ pos)))
- (buffer-substring pos (setq pos (+ pos len)))
- (prog1
- (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
- (buffer-substring pos (setq pos (+ pos 2))))
- (binhex-string-big-endian
- (buffer-substring pos (setq pos (+ pos 4))))
- (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
- (if (eq char 0)
- (binhex-insert-char (setq binhex-last-char 144) 1
- ignored buffer)
- (binhex-insert-char binhex-last-char (- char 1)
- ignored buffer)
- (setq binhex-last-char nil))
- (setq binhex-repeat nil))
- ((= char 144)
- (setq binhex-repeat t))
- (t
- (binhex-insert-char (setq binhex-last-char char) 1 ignored buffer))))
-
-;;;###autoload
-(defun binhex-decode-region-internal (start end &optional header-only)
- "Binhex decode region between START and END without using an external
program.
-If HEADER-ONLY is non-nil only decode header and return filename."
- (interactive "r")
- (let ((work-buffer nil)
- (counter 0)
- (bits 0) (tmp t)
- (lim 0) inputpos
- (non-data-chars " \t\n\r:")
- file-name-length data-fork-start
- header
- binhex-last-char binhex-repeat)
- (unwind-protect
- (save-excursion
- (goto-char start)
- (when (re-search-forward binhex-begin-line end t)
- (let (default-enable-multibyte-characters)
- (setq work-buffer (generate-new-buffer " *binhex-work*")))
- (beginning-of-line)
- (setq bits 0 counter 0)
- (while tmp
- (skip-chars-forward non-data-chars end)
- (setq inputpos (point))
- (end-of-line)
- (setq lim (point))
- (while (and (< inputpos lim)
- (setq tmp (binhex-char-map (char-after inputpos))))
- (setq bits (+ bits tmp)
- counter (1+ counter)
- inputpos (1+ inputpos))
- (cond ((= counter 4)
- (binhex-push-char (lsh bits -16) 1 nil work-buffer)
- (binhex-push-char (logand (lsh bits -8) 255) 1 nil
- work-buffer)
- (binhex-push-char (logand bits 255) 1 nil
- work-buffer)
- (setq bits 0 counter 0))
- (t (setq bits (lsh bits 6)))))
- (if (null file-name-length)
- (with-current-buffer work-buffer
- (setq file-name-length (char-after (point-min))
- data-fork-start (+ (point-min)
- file-name-length 22))))
- (when (and (null header)
- (with-current-buffer work-buffer
- (>= (buffer-size) data-fork-start)))
- (binhex-verify-crc work-buffer
- (point-min) data-fork-start)
- (setq header (binhex-header work-buffer))
- (when 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
- 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
- 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)))
- (and work-buffer (kill-buffer work-buffer)))
- (if header (aref header 1))))
-
-;;;###autoload
-(defun binhex-decode-region-external (start end)
- "Binhex decode region between START and END using external decoder."
- (interactive "r")
- (let ((cbuf (current-buffer)) firstline work-buffer status
- (file-name (expand-file-name
- (concat (binhex-decode-region-internal 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
- (generate-new-buffer " *binhex-work*")))
- (buffer-disable-undo work-buffer)
- (insert-buffer-substring cbuf firstline end)
- (cd binhex-temporary-file-directory)
- (apply 'call-process-region
- (point-min)
- (point-max)
- binhex-decoder-program
- nil
- nil
- nil
- binhex-decoder-switches))
- (cd cdir) (set-buffer cbuf)))
- (if (and file-name (file-exists-p file-name))
- (progn
- (goto-char start)
- (delete-region start end)
- (let (format-alist)
- (insert-file-contents-literally file-name)))
- (error "Can not binhex")))
- (and work-buffer (kill-buffer work-buffer))
- (ignore-errors
- (if file-name (delete-file file-name))))))
-
-;;;###autoload
-(defun binhex-decode-region (start end)
- "Binhex decode region between START and END."
- (interactive "r")
- (if binhex-use-external
- (binhex-decode-region-external start end)
- (binhex-decode-region-internal start end)))
-
-(provide 'binhex)
-
-;;; arch-tag: 8476badd-1e76-4f1d-a640-f9a38c72eed8
-;;; binhex.el ends here
- [Emacs-diffs] Changes to binhex.el,
Glenn Morris <=