;;; rfc1843.el --- HZ (rfc1843) decoding
-;; Copyright (c) 1998 by Shenghuo Zhu <zsh@cs.rochester.edu>
+
+;; Copyright (C) 1998-2015 Free Software Foundation, Inc.
;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
-;; $Revision: 1.3 $
-;; Keywords: news HZ
-;; Time-stamp: <Tue Oct 6 23:48:49 EDT 1998 zsh>
-
-;; This file is not part of GNU Emacs, but the same permissions
-;; apply.
-
-;; 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 2, 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.
+;; Keywords: news HZ HZ+ mail i18n
+
+;; 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 of the License, 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., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
+(eval-when-compile (require 'cl))
(require 'mm-util)
-(defvar rfc1843-word-regexp
- "~\\({\\([\041-\167][\041-\176]\\| \\)+\\(~}\\|$\\)")
+(defvar gnus-decode-encoded-word-function)
+(defvar gnus-decode-header-function)
+(defvar gnus-newsgroup-name)
+
+(defvar rfc1843-word-regexp
+ "~\\({\\([\041-\167][\041-\176]\\| \\)+\\)\\(~}\\|$\\)")
(defvar rfc1843-word-regexp-strictly
- "~\\({\\([\041-\167][\041-\176]\\)+\\(~}\\|$\\)")
+ "~\\({\\([\041-\167][\041-\176]\\)+\\)\\(~}\\|$\\)")
-(defvar rfc1843-hzp-word-regexp
+(defvar rfc1843-hzp-word-regexp
"~\\({\\([\041-\167][\041-\176]\\| \\)+\\|\
-[<>]\\([\041-\175][\041-\176]\\| \\)+\\)\\(~}\\|$\\)")
+\[<>]\\([\041-\175][\041-\176]\\| \\)+\\)\\(~}\\|$\\)")
(defvar rfc1843-hzp-word-regexp-strictly
- "~\\({\\([\041-\167][\041-\176]\\)+\\|\
-[<>]\\([\041-\175][\041-\176]\\)+\\)\\(~}\\|$\\)")
+ "~\\({\\([\041-\167][\041-\176]\\)+\\|\
+\[<>]\\([\041-\175][\041-\176]\\)+\\)\\(~}\\|$\\)")
(defcustom rfc1843-decode-loosely nil
"Loosely check HZ encoding if non-nil.
-When it is set non-nil, only buffers or strings with strictly
+When it is set non-nil, only buffers or strings with strictly
HZ-encoded are decoded."
:type 'boolean
- :group 'gnus)
+ :group 'mime)
(defcustom rfc1843-decode-hzp t
"HZ+ decoding support if non-nil.
HZ+ specification (also known as HZP) is to provide a standardized
7-bit representation of mixed Big5, GB, and ASCII text for convenient
-e-mail transmission, news posting, etc.
+e-mail transmission, news posting, etc.
The document of HZ+ 0.78 specification can be found at
ftp://ftp.math.psu.edu/pub/simpson/chinese/hzp/hzp.doc"
:type 'boolean
- :group 'gnus)
+ :group 'mime)
(defcustom rfc1843-newsgroups-regexp "chinese\\|hz"
"Regexp of newsgroups in which might be HZ encoded."
:type 'string
- :group 'gnus)
+ :group 'mime)
(defun rfc1843-decode-region (from to)
"Decode HZ in the region between FROM and TO."
(let (str firstc)
(save-excursion
(goto-char from)
- (if (or rfc1843-decode-loosely
- (re-search-forward (if rfc1843-decode-hzp
- rfc1843-hzp-word-regexp-strictly
+ (if (or rfc1843-decode-loosely
+ (re-search-forward (if rfc1843-decode-hzp
+ rfc1843-hzp-word-regexp-strictly
rfc1843-word-regexp-strictly) to t))
- (save-restriction
+ (save-restriction
(narrow-to-region from to)
(goto-char (point-min))
(while (re-search-forward (if rfc1843-decode-hzp
rfc1843-hzp-word-regexp
- rfc1843-word-regexp) (point-max) t)
- (setq str (match-string 1))
- (setq firstc (aref str 0))
- (insert (mm-decode-coding-string
+ rfc1843-word-regexp) (point-max) t)
+ ;;; Text with extents may cause XEmacs crash
+ (setq str (buffer-substring-no-properties
+ (match-beginning 1)
+ (match-end 1)))
+ (setq firstc (aref str 0))
+ (insert (mm-decode-coding-string
(rfc1843-decode
- (prog1
+ (prog1
(substring str 1)
(delete-region (match-beginning 0) (match-end 0)))
firstc)
(if (eq firstc ?{) 'cn-gb-2312 'cn-big5))))
(goto-char (point-min))
- (while (search-forward "~" (point-max) t)
- (cond ((eq (following-char) ?\n)
+ (while (search-forward "~" (point-max) t)
+ (cond ((eq (char-after) ?\n)
(delete-char -1)
(delete-char 1))
- ((eq (following-char) ?~)
- (delete-char 1)))))))))
+ ((eq (char-after) ?~)
+ (delete-char 1)))))))))
(defun rfc1843-decode-string (string)
"Decode HZ STRING and return the results."
(buffer-string))))
(defun rfc1843-decode (word &optional firstc)
- "Decode HZ WORD and return it"
+ "Decode HZ WORD and return it."
(let ((i -1) (s (substring word 0)) v)
(if (or (not firstc) (eq firstc ?{))
(while (< (incf i) (length s))
(aset s (incf i) (+ v (if (< v 63) 64 98))))))
s))
+(autoload 'mail-header-parse-content-type "mail-parse")
+(autoload 'message-narrow-to-head "message")
+(declare-function message-fetch-field "message" (header &optional not-all))
+
(defun rfc1843-decode-article-body ()
- "Decode HZ encoded text in the article body."
- (if (string-match (concat "\\<\\(" rfc1843-newsgroups-regexp "\\)\\>")
- gnus-newsgroup-name)
- (save-excursion
- (save-restriction
- (message-narrow-to-head)
- (goto-char (point-max))
- (widen)
- (rfc1843-decode-region (point) (point-max))))))
-
-(defvar rfc1843-old-gnus-decode-header-function nil)
+ "Decode HZ encoded text in the article body."
+ (if (string-match (concat "\\<\\(" rfc1843-newsgroups-regexp "\\)\\>")
+ (or gnus-newsgroup-name ""))
+ (save-excursion
+ (save-restriction
+ (message-narrow-to-head)
+ (let* ((inhibit-point-motion-hooks t)
+ (case-fold-search t)
+ (ct (message-fetch-field "Content-Type" t))
+ (ctl (and ct (mail-header-parse-content-type ct))))
+ (if (and ctl (not (string-match "/" (car ctl))))
+ (setq ctl nil))
+ (goto-char (point-max))
+ (widen)
+ (forward-line 1)
+ (narrow-to-region (point) (point-max))
+ (when (or (not ctl)
+ (equal (car ctl) "text/plain"))
+ (rfc1843-decode-region (point) (point-max))))))))
+
(defvar gnus-decode-header-methods)
(defvar gnus-decode-encoded-word-methods)
(require 'gnus-art)
(require 'gnus-sum)
(add-hook 'gnus-article-decode-hook 'rfc1843-decode-article-body t)
- (setq gnus-decode-encoded-word-function
+ (setq gnus-decode-encoded-word-function
'gnus-multi-decode-encoded-word-string
- gnus-decode-header-function
+ gnus-decode-header-function
'gnus-multi-decode-header
- gnus-decode-encoded-word-methods
- (nconc gnus-decode-encoded-word-methods
- (list
- (cons (concat "\\<\\(" rfc1843-newsgroups-regexp "\\)\\>")
+ gnus-decode-encoded-word-methods
+ (nconc gnus-decode-encoded-word-methods
+ (list
+ (cons (concat "\\<\\(" rfc1843-newsgroups-regexp "\\)\\>")
'rfc1843-decode-string)))
- gnus-decode-header-methods
- (nconc gnus-decode-header-methods
- (list
- (cons (concat "\\<\\(" rfc1843-newsgroups-regexp "\\)\\>")
+ gnus-decode-header-methods
+ (nconc gnus-decode-header-methods
+ (list
+ (cons (concat "\\<\\(" rfc1843-newsgroups-regexp "\\)\\>")
'rfc1843-decode-region)))))
(provide 'rfc1843)
projects / gnus / blobdiff