(defun unrmail (file to-file)
"Convert Rmail file FILE to system inbox format file TO-FILE."
(interactive "fUnrmail (rmail file): \nFUnrmail into (new mailbox file): ")
- (let ((message-count 1)
- ;; Prevent rmail from making, or switching to, a summary buffer.
- (rmail-display-summary nil)
- (rmail-delete-after-output nil)
- (temp-buffer (get-buffer-create " unrmail")))
- (rmail file)
+ (with-temp-buffer
+ ;; Read in the old Rmail file with no decoding.
+ (let ((coding-system-for-read 'raw-text))
+ (insert-file-contents file))
+ ;; But make it multibyte.
+ (set-buffer-multibyte t)
+
+ (if (not (looking-at "BABYL OPTIONS"))
+ (error "This file is not in Babyl format"))
+
+ ;; Decode the file contents just as Rmail did.
+ (let ((modifiedp (buffer-modified-p))
+ (coding-system rmail-file-coding-system)
+ from to)
+ (goto-char (point-min))
+ (search-forward "\n\^_" nil t) ; Skip BABYL header.
+ (setq from (point))
+ (goto-char (point-max))
+ (search-backward "\n\^_" from 'mv)
+ (setq to (point))
+ (unless (and coding-system
+ (coding-system-p coding-system))
+ (setq coding-system
+ ;; Emacs 21.1 and later writes RMAIL files in emacs-mule, but
+ ;; earlier versions did that with the current buffer's encoding.
+ ;; So we want to favor detection of emacs-mule (whose normal
+ ;; priority is quite low), but still allow detection of other
+ ;; encodings if emacs-mule won't fit. The call to
+ ;; detect-coding-with-priority below achieves that.
+ (car (detect-coding-with-priority
+ from to
+ '((coding-category-emacs-mule . emacs-mule))))))
+ (unless (memq coding-system
+ '(undecided undecided-unix))
+ (set-buffer-modified-p t) ; avoid locking when decoding
+ (let ((buffer-undo-list t))
+ (decode-coding-region from to coding-system))
+ (setq coding-system last-coding-system-used))
+
+ (setq buffer-file-coding-system nil)
+
+ ;; We currently don't use this value, but maybe we should.
+ (setq save-buffer-coding-system
+ (or coding-system 'undecided)))
+
;; Default the directory of TO-FILE based on where FILE is.
(setq to-file (expand-file-name to-file default-directory))
(condition-case ()
(delete-file to-file)
(file-error nil))
(message "Writing messages to %s..." to-file)
- (save-restriction
- (widen)
- (while (<= message-count rmail-total-messages)
- (let ((beg (rmail-msgbeg message-count))
- (end (rmail-msgbeg (1+ message-count)))
- (from-buffer (current-buffer))
- (coding (or rmail-file-coding-system 'raw-text))
+ (goto-char (point-min))
+
+ (let ((temp-buffer (get-buffer-create " unrmail"))
+ (from-buffer (current-buffer)))
+
+ ;; Process the messages one by one.
+ (while (search-forward "\^_\^l" nil t)
+ (let ((beg (point))
+ (end (save-excursion
+ (if (search-forward "\^_" nil t)
+ (1- (point)) (point-max))))
+ (coding 'raw-text)
label-line attrs keywords
- header-beginning mail-from)
- (save-excursion
- (goto-char (rmail-msgbeg message-count))
- (setq header-beginning (point))
- (search-forward "\n*** EOOH ***\n")
- (forward-line -1)
- (search-forward "\n\n")
- (save-restriction
- (narrow-to-region header-beginning (point))
- (setq mail-from
- (or (mail-fetch-field "Mail-From")
- (concat "From "
- (mail-strip-quoted-names (or (mail-fetch-field "from")
- (mail-fetch-field "really-from")
- (mail-fetch-field "sender")
- "unknown"))
- " " (current-time-string))))))
+ mail-from reformatted)
(with-current-buffer temp-buffer
(setq buffer-undo-list t)
(erase-buffer)
(insert-buffer-substring from-buffer beg end)
(goto-char (point-min))
(forward-line 1)
+ ;; Record whether the header is reformatted.
+ (setq reformatted (= (following-char) ?1))
+
+ ;; Collect the label line, then get the attributes
+ ;; and the keywords from it.
(setq label-line
(buffer-substring (point)
- (progn (forward-line 1)
- (point))))
- (forward-line -1)
+ (save-excursion (forward-line 1)
+ (point))))
(search-forward ",,")
(unless (eolp)
(setq keywords
(if (string-match ", resent," label-line) ?R ?-)
(if (string-match ", unseen," label-line) ?\ ?-)
(if (string-match ", stored," label-line) ?S ?-)))
- (unrmail-unprune)
+
+ ;; Delete the special Babyl lines at the start,
+ ;; and the ***EOOH*** line, and the reformatted header if any.
+ (goto-char (point-min))
+ (if reformatted
+ (progn
+ (forward-line 2)
+ ;; Delete Summary-Line headers.
+ (let ((case-fold-search t))
+ (while (looking-at "Summary-Line:")
+ (forward-line 1)))
+ (delete-region (point-min) (point))
+ ;; Delete the old reformatted header.
+ (re-search-forward "^[*][*][*] EOOH [*][*][*]\n")
+ (forward-line -1)
+ (let ((start (point)))
+ (search-forward "\n\n")
+ (delete-region start (point))))
+ ;; Not reformatted. Delete the special
+ ;; lines before the real header.
+ (re-search-forward "^[*][*][*] EOOH [*][*][*]\n")
+ (delete-region (point-min) (point)))
+
+ ;; Some operations on the message header itself.
(goto-char (point-min))
+ (save-restriction
+ (narrow-to-region
+ (point-min)
+ (save-excursion (search-forward "\n\n" nil 'move) (point)))
+
+ ;; Fetch or construct what we should use in the `From ' line.
+ (setq mail-from
+ (or (mail-fetch-field "Mail-From")
+ (concat "From "
+ (mail-strip-quoted-names (or (mail-fetch-field "from")
+ (mail-fetch-field "really-from")
+ (mail-fetch-field "sender")
+ "unknown"))
+ " " (current-time-string))))
+
+ ;; If the message specifies a coding system, use it.
+ (let ((maybe-coding (mail-fetch-field "X-Coding-System")))
+ (if maybe-coding
+ (setq coding (intern maybe-coding))))
+
+ ;; Delete the Mail-From: header field if any.
+ (when (re-search-forward "^Mail-from:" nil t)
+ (beginning-of-line)
+ (delete-region (point)
+ (progn (forward-line 1) (point)))))
+
+ (goto-char (point-min))
+ ;; Insert the `From ' line.
(insert mail-from "\n")
+ ;; Record the keywords and attributes in our special way.
(insert "X-BABYL-V6-ATTRIBUTES: " (apply 'string attrs) "\n")
(when keywords
(insert "X-BABYL-V6-KEYWORDS: " keywords "\n"))
(while (search-forward "\nFrom " nil t)
(forward-char -5)
(insert ?>)))
+ ;; Write it to the output file.
(write-region (point-min) (point-max) to-file t
- 'nomsg)))
- (setq message-count (1+ message-count))))
+ 'nomsg))))
+ (kill-buffer temp-buffer))
(message "Writing messages to %s...done" to-file)))
-(defun unrmail-unprune ()
- (let* ((pruned
- (save-excursion
- (goto-char (point-min))
- (forward-line 1)
- (= (following-char) ?1))))
- (if pruned
- (progn
- (goto-char (point-min))
- (forward-line 2)
- ;; Delete Summary-Line headers.
- (let ((case-fold-search t))
- (while (looking-at "Summary-Line:")
- (forward-line 1)))
- (delete-region (point-min) (point))
- ;; Delete the old reformatted header.
- (re-search-forward "^[*][*][*] EOOH [*][*][*]\n")
- (forward-line -1)
- (let ((start (point)))
- (search-forward "\n\n")
- (delete-region start (point))))
- ;; Delete everything up to the real header.
- (goto-char (point-min))
- (re-search-forward "^[*][*][*] EOOH [*][*][*]\n")
- (delete-region (point-min) (point)))
- (goto-char (point-min))
- (when (re-search-forward "^Mail-from:")
- (beginning-of-line)
- (delete-region (point)
- (progn (forward-line 1) (point))))))
-
-
(provide 'unrmail)
;;; unrmail.el ends here
+;;; arch-tag: 14c6290d-60b2-456f-8909-5c2387de6acb
HCoop / bpt / emacs.git / blobdiff