;; Author: ENAMI Tsugutomo <enami@sys.ptg.sony.co.jp>
;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
;; Maintainer: MORIOKA Tomohiko <morioka@jaist.ac.jp>
-;; Created: 1993/6/3 (1995/10/3 obsolete tiny-mime.el)
-;; Version: $Revision: 7.25 $
+;; Created: 1995/10/03
+;; Original: 1992/07/20 ENAMI Tsugutomo's `mime.el'.
+;; Renamed: 1993/06/03 to tiny-mime.el.
+;; Renamed: 1995/10/03 from tiny-mime.el. (split off encoder)
+;; Version: $Revision: 7.29 $
;; Keywords: mail, news, MIME, RFC 1522, multilingual, encoded-word
;; This file is part of tm (Tools for MIME).
;; General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with this program; see the file COPYING. If not, write to
-;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; 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.
;;; Code:
;;;
(defconst tm-ew-d/RCS-ID
- "$Id: tm-ew-d.el,v 7.25 1996/09/13 02:39:01 morioka Exp $")
+ "$Id: tm-ew-d.el,v 7.29 1996/10/13 18:44:49 morioka Exp $")
(defconst mime/eword-decoder-version (get-version-string tm-ew-d/RCS-ID))
;;; @ for string
;;;
-(defun mime-eword/decode-string (str &optional unfolding)
- (setq str (std11-unfold-string str))
+(defun mime-eword/decode-string (string &optional must-unfold)
+ "Decode MIME encoded-words in STRING.
+
+STRING is unfolded before decoding.
+
+If an encoded-word is broken or your emacs implementation can not
+decode the charset included in it, it is not decoded.
+
+If MUST-UNFOLD is non-nil, it unfolds and eliminates line-breaks even
+if there are in decoded encoded-words (generated by bad manner MUA
+such as a version of Net$cape). [tm-ew-d.el]"
+ (setq string (std11-unfold-string string))
(let ((dest "")(ew nil)
beg end)
- (while (and (string-match mime/encoded-word-regexp str)
+ (while (and (string-match mime/encoded-word-regexp string)
(setq beg (match-beginning 0)
end (match-end 0))
)
(if (> beg 0)
(if (not
(and (eq ew t)
- (string-match "^[ \t]+$" (substring str 0 beg))
+ (string-match "^[ \t]+$" (substring string 0 beg))
))
- (setq dest (concat dest (substring str 0 beg)))
+ (setq dest (concat dest (substring string 0 beg)))
)
)
(setq dest
(concat dest
(mime/decode-encoded-word
- (substring str beg end) unfolding)
+ (substring string beg end) must-unfold)
))
- (setq str (substring str end))
+ (setq string (substring string end))
(setq ew t)
)
- (concat dest str)
+ (concat dest string)
))
;;; @ for region
;;;
-(defun mime-eword/decode-region (beg end &optional unfolding must-unfold)
- "Decode MIME encoded-words in region between BEG and END.
+(defun mime-eword/decode-region (start end &optional unfolding must-unfold)
+ "Decode MIME encoded-words in region between START and END.
+
If UNFOLDING is not nil, it unfolds before decoding.
-If MUST-UNFOLD is not nil, it unfolds encoded results. [tm-ew-d.el]"
+
+If MUST-UNFOLD is non-nil, it unfolds and eliminates line-breaks even
+if there are in decoded encoded-words (generated by bad manner MUA
+such as a version of Net$cape). [tm-ew-d.el]"
(interactive "*r")
(save-excursion
(save-restriction
- (narrow-to-region beg end)
+ (narrow-to-region start end)
(if unfolding
(mime/unfolding)
)
;;; @ encoded-word decoder
;;;
-(defun mime/decode-encoded-word (word &optional unfolding)
+(defun mime/decode-encoded-word (word &optional must-unfold)
+ "Decode WORD if it is an encoded-word.
+
+If your emacs implementation can not decode the charset of WORD, it
+returns WORD. Similarly the encoded-word is broken, it returns WORD.
+
+If MUST-UNFOLD is non-nil, it unfolds and eliminates line-breaks even
+if there are in decoded encoded-word (generated by bad manner MUA such
+as a version of Net$cape). [tm-ew-d.el]"
(or (if (string-match mime/encoded-word-regexp word)
(let ((charset
(substring word (match-beginning 1) (match-end 1))
(text
(substring word (match-beginning 3) (match-end 3))
))
- (mime/decode-encoded-text charset encoding text unfolding)
+ (mime/decode-encoded-text charset encoding text must-unfold)
))
word))
;;; @ encoded-text decoder
;;;
-(defun mime/decode-encoded-text (charset encoding str &optional unfolding)
+(defun mime/decode-encoded-text (charset encoding string &optional must-unfold)
+ "Decode STRING as an encoded-text.
+
+If your emacs implementation can not decode CHARSET, it returns nil.
+
+If ENCODING is not \"B\" or \"Q\", it occurs error.
+So you should write error-handling code if you don't want break by errors.
+
+If MUST-UNFOLD is non-nil, it unfolds and eliminates line-breaks even
+if there are in decoded encoded-text (generated by bad manner MUA such
+as a version of Net$cape). [tm-ew-d.el]"
(let ((cs (mime-charset-to-coding-system charset)))
(if cs
(let ((dest
(cond ((string-equal "B" encoding)
- (base64-decode-string str))
+ (base64-decode-string string))
((string-equal "Q" encoding)
- (q-encoding-decode-string str))
+ (q-encoding-decode-string string))
(t (message "unknown encoding %s" encoding)
nil))))
(if dest
(progn
(setq dest (decode-coding-string dest cs))
- (if unfolding
+ (if must-unfold
(mapconcat (function
(lambda (chr)
(if (eq chr ?\n)
projects / elisp / tm.git / blobdiff