X-Git-Url: http://cgit.sxemacs.org/?p=gnus;a=blobdiff_plain;f=lisp%2Fmm-bodies.el;h=557bd132ed5b395f765bca8f2a93daca5ff78757;hp=b28c50cb182bd2bafa8800b66ab1f7ebd9be05a4;hb=b58d62328adf02b341b460a98819a54a0d629b60;hpb=999d28bb4819373e54a67814356ff3327250623f diff --git a/lisp/mm-bodies.el b/lisp/mm-bodies.el index b28c50cb1..557bd132e 100644 --- a/lisp/mm-bodies.el +++ b/lisp/mm-bodies.el @@ -1,7 +1,7 @@ ;;; mm-bodies.el --- Functions for decoding MIME things -;; Copyright (C) 1998, 1999, 2000, 2001 -;; Free Software Foundation, Inc. +;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, +;; 2005, 2006, 2007 Free Software Foundation, Inc. ;; Author: Lars Magne Ingebrigtsen ;; MORIOKA Tomohiko @@ -9,7 +9,7 @@ ;; 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) +;; 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, @@ -19,32 +19,44 @@ ;; 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: -(eval-and-compile - (or (fboundp 'base64-decode-region) - (require 'base64))) - -(eval-when-compile - (defvar mm-uu-decode-function) - (defvar mm-uu-binhex-decode-function)) - (require 'mm-util) (require 'rfc2047) (require 'mm-encode) -;; 8bit treatment gets any char except: 0x32 - 0x7f, CR, LF, TAB, BEL, +(defvar mm-uu-yenc-decode-function) +(defvar mm-uu-decode-function) +(defvar mm-uu-binhex-decode-function) + +;; 8bit treatment gets any char except: 0x32 - 0x7f, LF, TAB, BEL, ;; BS, vertical TAB, form feed, and ^_ -(defvar mm-7bit-chars "\x20-\x7f\r\n\t\x7\x8\xb\xc\x1f") +;; +;; Note that CR is *not* included, as that would allow a non-paired CR +;; in the body contrary to RFC 2822: +;; +;; - CR and LF MUST only occur together as CRLF; they MUST NOT +;; appear independently in the body. + +(defvar mm-7bit-chars "\x20-\x7f\n\t\x7\x8\xb\xc\x1f") (defcustom mm-body-charset-encoding-alist '((iso-2022-jp . 7bit) - (iso-2022-jp-2 . 7bit)) + (iso-2022-jp-2 . 7bit) + ;; We MUST encode UTF-16 because it can contain \0's which is + ;; known to break servers. + ;; Note: UTF-16 variants are invalid for text parts [RFC 2781], + ;; so this can't happen :-/. + ;; PPS: Yes, it can happen if the user specifies UTF-16 in the MML + ;; markup. - jh. + (utf-16 . base64) + (utf-16be . base64) + (utf-16le . base64)) "Alist of MIME charsets to encodings. Valid encodings are `7bit', `8bit', `quoted-printable' and `base64'." :type '(repeat (cons (symbol :tag "charset") @@ -58,9 +70,9 @@ Valid encodings are `7bit', `8bit', `quoted-printable' and `base64'." (defun mm-encode-body (&optional charset) "Encode a body. Should be called narrowed to the body that is to be encoded. -If there is more than one non-ASCII MULE charset, then list of found -MULE charsets are returned. -If CHARSET is non-nil, it is used. +If there is more than one non-ASCII MULE charset in the body, then the +list of MULE charsets found is returned. +If CHARSET is non-nil, it is used as the MIME charset to encode the body. If successful, the MIME charset is returned. If no encoding was done, nil is returned." (if (not (mm-multibyte-p)) @@ -74,19 +86,19 @@ If no encoding was done, nil is returned." (message-options-get 'mm-encody-body-charset) (message-options-set 'mm-encody-body-charset - (mm-read-charset "Charset used in the article: "))) + (mm-read-coding-system "Charset used in the article: "))) ;; The logic in `mml-generate-mime-1' confirms that it's OK ;; to return nil here. nil))) (save-excursion (if charset (progn - (mm-encode-coding-region (point-min) (point-max) charset) + (mm-encode-coding-region (point-min) (point-max) + (mm-charset-to-coding-system charset)) charset) (goto-char (point-min)) (let ((charsets (mm-find-mime-charset-region (point-min) (point-max) - mm-hack-charsets)) - start) + mm-hack-charsets))) (cond ;; No encoding. ((null charsets) @@ -96,27 +108,14 @@ If no encoding was done, nil is returned." charsets) ;; We encode. (t - (setq charset (car charsets)) - (while (not (eobp)) - (if (eq (mm-charset-after) 'ascii) - (when start - (save-restriction - (narrow-to-region start (point)) - (mm-encode-coding-region - start (point) (mm-charset-to-coding-system charset)) - (goto-char (point-max))) - (setq start nil)) - (unless start - (setq start (point)))) - (forward-char 1)) - (when start - (mm-encode-coding-region start (point) - (mm-charset-to-coding-system charset)) - (setq start nil)) - charset))))))) + (prog1 + (setq charset (car charsets)) + (mm-encode-coding-region (point-min) (point-max) + (mm-charset-to-coding-system charset)))) + )))))) (defun mm-long-lines-p (length) - "Say whether any of the lines in the buffer is longer than LINES." + "Say whether any of the lines in the buffer is longer than LENGTH." (save-excursion (goto-char (point-min)) (end-of-line) @@ -137,13 +136,15 @@ If no encoding was done, nil is returned." (longp (mm-long-lines-p 1000))) (require 'message) (cond - ((and (not mm-use-ultra-safe-encoding) - (not longp) + ((and (not longp) + (not (and mm-use-ultra-safe-encoding + (or (save-excursion (re-search-forward " $" nil t)) + (save-excursion (re-search-forward "^From " nil t))))) (eq bits '7bit)) bits) ((and (not mm-use-ultra-safe-encoding) (not longp) - (not (eq '7bit (cdr (assq charset mm-body-charset-encoding-alist)))) + (not (cdr (assq charset mm-body-charset-encoding-alist))) (or (eq t (cdr message-posting-charset)) (memq charset (cdr message-posting-charset)) (eq charset mail-parse-charset))) @@ -159,27 +160,12 @@ If no encoding was done, nil is returned." (defun mm-body-7-or-8 () "Say whether the body is 7bit or 8bit." - (cond - ((not (featurep 'mule)) - (if (save-excursion - (goto-char (point-min)) - (skip-chars-forward mm-7bit-chars) - (eobp)) - '7bit - '8bit)) - (t - ;; Mule version - (if (and (null (delq 'ascii - (mm-find-charset-region (point-min) (point-max)))) - ;;!!!The following is necessary because the function - ;;!!!above seems to return the wrong result under - ;;!!!Emacs 20.3. Sometimes. - (save-excursion - (goto-char (point-min)) - (skip-chars-forward mm-7bit-chars) - (eobp))) - '7bit - '8bit)))) + (if (save-excursion + (goto-char (point-min)) + (skip-chars-forward mm-7bit-chars) + (eobp)) + '7bit + '8bit)) ;;; ;;; Functions for decoding @@ -237,28 +223,34 @@ If TYPE is `text/plain' CRLF->LF translation may occur." (message "Error while decoding: %s" error) nil)) (when (and + type (memq encoding '(base64 x-uuencode x-uue x-binhex x-yenc)) - (equal type "text/plain")) + (string-match "\\`text/" type)) (goto-char (point-min)) (while (search-forward "\r\n" nil t) (replace-match "\n" t t))))) -(defun mm-decode-body (charset &optional encoding type force) - "Decode the current article that has been encoded with ENCODING. -The characters in CHARSET should then be decoded. If FORCE is non-nil -use the supplied charset unconditionally." - (if (stringp charset) - (setq charset (intern (downcase charset)))) - (if (or (not charset) - (eq 'gnus-all mail-parse-ignored-charsets) - (memq 'gnus-all mail-parse-ignored-charsets) - (memq charset mail-parse-ignored-charsets)) - (setq charset mail-parse-charset)) +(defun mm-decode-body (charset &optional encoding type) + "Decode the current article that has been encoded with ENCODING to CHARSET. +ENCODING is a MIME content transfer encoding. +CHARSET is the MIME charset with which to decode the data after transfer +decoding. If it is nil, default to `mail-parse-charset'." + (when (stringp charset) + (setq charset (intern (downcase charset)))) + (when (or (not charset) + (eq 'gnus-all mail-parse-ignored-charsets) + (memq 'gnus-all mail-parse-ignored-charsets) + (memq charset mail-parse-ignored-charsets)) + (setq charset mail-parse-charset)) (save-excursion (when encoding (mm-decode-content-transfer-encoding encoding type)) - (when (featurep 'mule) - (let ((coding-system (mm-charset-to-coding-system charset))) + (when (and (featurep 'mule) ;; Fixme: Wrong test for unibyte session. + (not (eq charset 'gnus-decoded))) + (let ((coding-system (mm-charset-to-coding-system + ;; Allow overwrite using + ;; `mm-charset-override-alist'. + charset nil t))) (if (and (not coding-system) (listp mail-parse-ignored-charsets) (memq 'gnus-unknown mail-parse-ignored-charsets)) @@ -270,26 +262,13 @@ use the supplied charset unconditionally." ;;in XEmacs (mm-multibyte-p) (or (not (eq coding-system 'ascii)) - (setq coding-system mail-parse-charset)) - (not (eq coding-system 'gnus-decoded))) - (if force - (mm-decode-coding-region (point-min) (point-max) - coding-system) - (mm-decode-coding-region-safely (point-min) (point-max) - coding-system))))))) - -(defun mm-decode-coding-region-safely (start end coding-system) - "Decode region between START and END with CODING-SYSTEM. -If CODING-SYSTEM is not a valid coding system for the text, let Emacs -decide which coding system to use." - (let* ((decoded (mm-decode-coding-string (buffer-substring start end) - coding-system)) - (charsets (find-charset-string decoded))) - (if (or (memq 'eight-bit-control charsets) - (memq 'eight-bit-graphic charsets)) - (mm-decode-coding-region start end 'undecided) - (delete-region start end) - (insert decoded)))) + (setq coding-system mail-parse-charset))) + (mm-decode-coding-region (point-min) (point-max) + coding-system)) + (setq buffer-file-coding-system + (if (boundp 'last-coding-system-used) + (symbol-value 'last-coding-system-used) + coding-system)))))) (defun mm-decode-string (string charset) "Decode STRING with CHARSET." @@ -302,7 +281,11 @@ decide which coding system to use." (setq charset mail-parse-charset)) (or (when (featurep 'mule) - (let ((coding-system (mm-charset-to-coding-system charset))) + (let ((coding-system (mm-charset-to-coding-system + charset + ;; Allow overwrite using + ;; `mm-charset-override-alist'. + nil t))) (if (and (not coding-system) (listp mail-parse-ignored-charsets) (memq 'gnus-unknown mail-parse-ignored-charsets)) @@ -317,4 +300,5 @@ decide which coding system to use." (provide 'mm-bodies) +;;; arch-tag: 41104bb6-4443-4ca9-8d5c-ff87ecf27d8d ;;; mm-bodies.el ends here