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mirror of https://git.savannah.gnu.org/git/emacs.git synced 2024-12-25 10:47:00 +00:00
emacs/lisp/gnus/rfc1843.el
Gnus developers 4d2226bff0 Merge from Gnus git master
2014-03-14 Katsumi Yamaoka <yamaoka@jpl.org>
 * gnus-sum.el (gnus-summary-toggle-header): Display header attachment
 buttons when toggling the header off.

2014-03-07 Daiki Ueno <ueno@gnu.org>
 * mml2015.el (mml2015-use): Don't check the availability of GnuPG
 commands here; instead, only check if epg-config.el is available.

2014-03-06 Lars Ingebrigtsen <larsi@gnus.org>
 * mml.el (mml-expand-html-into-multipart-related): Allow sending HTML
 messages with embedded images.
 (mml-generate-mime): Don't bug out if you don't have libxml.

2014-03-06 Lars Ingebrigtsen <larsi@gnus.org>
 * message.el (message-make-html-message-with-image-files): New command.

2014-03-05 Lars Ingebrigtsen <larsi@gnus.org>
 * mml.el (mml-insert-mime-headers): Allow `recipient-filename'.

2014-02-23 David Engster <deng@randomsample.de>
 * auth-source.el (auth-source-netrc-saver): Do not depend on `cl-lib'
 to stay compatible with older Emacsen, so replace `cl-loop' with
 `loop'.

2014-02-17 Katsumi Yamaoka <yamaoka@jpl.org>
 * gnus-art.el (gnus-article-prepare, gnus-article-prepare-display):
 Display header attachment buttons by gnus-article-prepare-display
 rather than gnus-article-prepare so as to view in mml-preview as well.

2014-02-10 Katsumi Yamaoka <yamaoka@jpl.org>
 * gnus-art.el (gnus-article-goto-part): Find a button in the body first.
 (gnus-mime-buttonize-attachments-in-header): Number hidden buttons.

2014-02-07 Katsumi Yamaoka <yamaoka@jpl.org>
 * gnus-art.el (gnus-mime-buttonize-attachments-in-header): Display
 buttons that are hidden in unselected alternative part as well.
 (gnus-mime-display-alternative): Redraw attachment buttons in header.
 * gmm-utils.el (gmm-labels): Add edebug spec.

2014-02-07 Lars Ingebrigtsen <larsi@gnus.org>
 * gnus-srvr.el (gnus-server-toggle-cloud-server): New command and
 keystroke.
 (gnus-server-toggle-cloud-server): Only allow clouding applicable
 types.

2014-02-05 Katsumi Yamaoka <yamaoka@jpl.org>
 * gnus.el (gnus-copy-overlay, gnus-overlays-at): New functions.
 * gnus-art.el (gnus-mime-display-attachment-buttons-in-header):
 New user option.
 (gnus-mime-buttonize-attachments-in-header): New function.
 (gnus-article-prepare): Use it.
 (gnus-mime-inline-part): Suppress extra newline.
 (gnus-mm-display-part): Save excursion;
 remove useless deleting and adding of buttons.
 (gnus-insert-mime-button): Allow insertion in the middle of a line.
 * gnus-sum.el (gnus-summary-wash-mime-map, gnus-summary-article-menu):
 Add gnus-mime-buttonize-attachments-in-header.

2014-02-05 Lars Ingebrigtsen <larsi@gnus.org>
 * nnimap.el (nnimap-request-articles): New command to download several
 articles at once.
 * gnus.el (gnus-variable-list): Save Cloud variables.

2014-02-01 Lars Ingebrigtsen <larsi@gnus.org>
 * gnus-cloud.el: New file to provide the Emacs Cloud.
 * gravatar.el (gravatar-retrieve-synchronously): XEmacs also has
 `url-retrieve-synchronously', apparently.
 * gnus-notifications.el (gravatar-retrieve-synchronously): Declare for
 XEmacs.
 * nnrss.el (libxml-parse-html-region): Silence compilation error.

2014-02-01 Daniel Dehennin <daniel.dehennin@baby-gnu.org>
 * gnus-mlspl.el (gnus-group-split-fancy): Use `gnus-parameters' in
 `gnus-group-split-fancy'.

2014-02-01 Lars Ingebrigtsen <larsi@gnus.org>
 * message.el (message-remove-header): Doc fix.
 (message-forward-included-headers): New variable.
 (message-remove-ignored-headers): Use it.

2014-01-31 Dave Abrahams <dave@boostpro.com>
 * gnus-sum.el (gnus-summary-open-group-with-article): New command.

2013-09-04 Rasmus Pank Roulund <emacs@pank.eu>
 * gnus-fun.el (gnus-x-face-omit-files): Regexp to omit matched results
 from random face commands.
 (gnus-face-directory): Like `gnus-x-face-directory` for png files and
 Face.
 (gnus-face-omit-files): Like `gnus-x-face-omit-files` for Face.
 (gnus--random-face-with-type): Generic function returning a face-type
 as a string.
 (gnus--insert-random-face-with-type): Generic function inserting a face
 in a message buffer header.
 (gnus-random-x-face): Rewritten to use `gnus--random-face-with-type`.
 (gnus-insert-random-x-face-header): Rewritten to use
 `gnus--insert-random-face-with-type`.
 (gnus-random-face): Return random (png) Face as string.
 (nus-insert-random-face-header): Insert random (png) Face in a message
 buffer.

2014-01-31 Lars Ingebrigtsen <larsi@gnus.org>
 * mm-url.el: Remove all usage of w3.
 * nnrss.el: Ditto.
 * mm-decode.el: Ditto.
 * mm-view.el: Ditto.
 * gnus-setup.el: Remove outdated file.
2014-03-23 23:13:36 +00:00

190 lines
5.9 KiB
EmacsLisp

;;; rfc1843.el --- HZ (rfc1843) decoding
;; Copyright (C) 1998-2014 Free Software Foundation, Inc.
;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
;; 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. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Usage:
;; (require 'rfc1843)
;; (rfc1843-gnus-setup)
;;
;; Test:
;; (rfc1843-decode-string "~{<:Ky2;S{#,NpJ)l6HK!#~}")
;;; Code:
(eval-when-compile (require 'cl))
(require 'mm-util)
(defvar gnus-decode-encoded-word-function)
(defvar gnus-decode-header-function)
(defvar gnus-newsgroup-name)
(defvar rfc1843-word-regexp
"~\\({\\([\041-\167][\041-\176]\\| \\)+\\)\\(~}\\|$\\)")
(defvar rfc1843-word-regexp-strictly
"~\\({\\([\041-\167][\041-\176]\\)+\\)\\(~}\\|$\\)")
(defvar rfc1843-hzp-word-regexp
"~\\({\\([\041-\167][\041-\176]\\| \\)+\\|\
\[<>]\\([\041-\175][\041-\176]\\| \\)+\\)\\(~}\\|$\\)")
(defvar rfc1843-hzp-word-regexp-strictly
"~\\({\\([\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
HZ-encoded are decoded."
:type 'boolean
: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.
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 'mime)
(defcustom rfc1843-newsgroups-regexp "chinese\\|hz"
"Regexp of newsgroups in which might be HZ encoded."
:type 'string
:group 'mime)
(defun rfc1843-decode-region (from to)
"Decode HZ in the region between FROM and TO."
(interactive "r")
(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
rfc1843-word-regexp-strictly) to t))
(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)
;;; 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
(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 (char-after) ?\n)
(delete-char -1)
(delete-char 1))
((eq (char-after) ?~)
(delete-char 1)))))))))
(defun rfc1843-decode-string (string)
"Decode HZ STRING and return the results."
(let ((m (mm-multibyte-p)))
(with-temp-buffer
(when m
(mm-enable-multibyte))
(insert string)
(inline
(rfc1843-decode-region (point-min) (point-max)))
(buffer-string))))
(defun rfc1843-decode (word &optional firstc)
"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))
(if (eq (setq v (aref s i)) ? ) nil
(aset s i (+ 128 v))))
(while (< (incf i) (length s))
(if (eq (setq v (aref s i)) ? ) nil
(setq v (+ (* 94 v) (aref s (1+ i)) -3135))
(aset s i (+ (/ v 157) (if (eq firstc ?<) 201 161)))
(setq v (% v 157))
(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 "\\)\\>")
(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)
(defun rfc1843-gnus-setup ()
"Setup HZ decoding for Gnus."
(require 'gnus-art)
(require 'gnus-sum)
(add-hook 'gnus-article-decode-hook 'rfc1843-decode-article-body t)
(setq gnus-decode-encoded-word-function
'gnus-multi-decode-encoded-word-string
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 "\\)\\>")
'rfc1843-decode-string)))
gnus-decode-header-methods
(nconc gnus-decode-header-methods
(list
(cons (concat "\\<\\(" rfc1843-newsgroups-regexp "\\)\\>")
'rfc1843-decode-region)))))
(provide 'rfc1843)
;;; rfc1843.el ends here