1;;; unrmail.el --- convert Rmail files to mailbox files 2 3;; Copyright (C) 1992, 2001, 2002, 2003, 2004, 2005, 4;; 2006, 2007 Free Software Foundation, Inc. 5 6;; Maintainer: FSF 7;; Keywords: mail 8 9;; This file is part of GNU Emacs. 10 11;; GNU Emacs is free software; you can redistribute it and/or modify 12;; it under the terms of the GNU General Public License as published by 13;; the Free Software Foundation; either version 2, or (at your option) 14;; any later version. 15 16;; GNU Emacs is distributed in the hope that it will be useful, 17;; but WITHOUT ANY WARRANTY; without even the implied warranty of 18;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19;; GNU General Public License for more details. 20 21;; You should have received a copy of the GNU General Public License 22;; along with GNU Emacs; see the file COPYING. If not, write to the 23;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 24;; Boston, MA 02110-1301, USA. 25 26;;; Commentary: 27 28;;; Code: 29 30(defvar command-line-args-left) ;Avoid 'free variable' warning 31 32;;;###autoload 33(defun batch-unrmail () 34 "Convert Rmail files to system inbox format. 35Specify the input Rmail file names as command line arguments. 36For each Rmail file, the corresponding output file name 37is made by adding `.mail' at the end. 38For example, invoke `emacs -batch -f batch-unrmail RMAIL'." 39 ;; command-line-args-left is what is left of the command line (from startup.el) 40 (if (not noninteractive) 41 (error "`batch-unrmail' is to be used only with -batch")) 42 (let ((error nil)) 43 (while command-line-args-left 44 (or (unrmail (car command-line-args-left) 45 (concat (car command-line-args-left) ".mail")) 46 (setq error t)) 47 (setq command-line-args-left (cdr command-line-args-left))) 48 (message "Done") 49 (kill-emacs (if error 1 0)))) 50 51;;;###autoload 52(defun unrmail (file to-file) 53 "Convert Rmail file FILE to system inbox format file TO-FILE." 54 (interactive "fUnrmail (rmail file): \nFUnrmail into (new mailbox file): ") 55 (with-temp-buffer 56 ;; Read in the old Rmail file with no decoding. 57 (let ((coding-system-for-read 'raw-text)) 58 (insert-file-contents file)) 59 ;; But make it multibyte. 60 (set-buffer-multibyte t) 61 62 (if (not (looking-at "BABYL OPTIONS")) 63 (error "This file is not in Babyl format")) 64 65 ;; Decode the file contents just as Rmail did. 66 (let ((modifiedp (buffer-modified-p)) 67 (coding-system rmail-file-coding-system) 68 from to) 69 (goto-char (point-min)) 70 (search-forward "\n\^_" nil t) ; Skip BABYL header. 71 (setq from (point)) 72 (goto-char (point-max)) 73 (search-backward "\n\^_" from 'mv) 74 (setq to (point)) 75 (unless (and coding-system 76 (coding-system-p coding-system)) 77 (setq coding-system 78 ;; Emacs 21.1 and later writes RMAIL files in emacs-mule, but 79 ;; earlier versions did that with the current buffer's encoding. 80 ;; So we want to favor detection of emacs-mule (whose normal 81 ;; priority is quite low), but still allow detection of other 82 ;; encodings if emacs-mule won't fit. The call to 83 ;; detect-coding-with-priority below achieves that. 84 (car (detect-coding-with-priority 85 from to 86 '((coding-category-emacs-mule . emacs-mule)))))) 87 (unless (memq coding-system 88 '(undecided undecided-unix)) 89 (set-buffer-modified-p t) ; avoid locking when decoding 90 (let ((buffer-undo-list t)) 91 (decode-coding-region from to coding-system)) 92 (setq coding-system last-coding-system-used)) 93 94 (setq buffer-file-coding-system nil) 95 96 ;; We currently don't use this value, but maybe we should. 97 (setq save-buffer-coding-system 98 (or coding-system 'undecided))) 99 100 ;; Default the directory of TO-FILE based on where FILE is. 101 (setq to-file (expand-file-name to-file default-directory)) 102 (condition-case () 103 (delete-file to-file) 104 (file-error nil)) 105 (message "Writing messages to %s..." to-file) 106 (goto-char (point-min)) 107 108 (let ((temp-buffer (get-buffer-create " unrmail")) 109 (from-buffer (current-buffer))) 110 111 ;; Process the messages one by one. 112 (while (search-forward "\^_\^l" nil t) 113 (let ((beg (point)) 114 (end (save-excursion 115 (if (search-forward "\^_" nil t) 116 (1- (point)) (point-max)))) 117 (coding 'raw-text) 118 label-line attrs keywords 119 mail-from reformatted) 120 (with-current-buffer temp-buffer 121 (setq buffer-undo-list t) 122 (erase-buffer) 123 (setq buffer-file-coding-system coding) 124 (insert-buffer-substring from-buffer beg end) 125 (goto-char (point-min)) 126 (forward-line 1) 127 ;; Record whether the header is reformatted. 128 (setq reformatted (= (following-char) ?1)) 129 130 ;; Collect the label line, then get the attributes 131 ;; and the keywords from it. 132 (setq label-line 133 (buffer-substring (point) 134 (save-excursion (forward-line 1) 135 (point)))) 136 (search-forward ",,") 137 (unless (eolp) 138 (setq keywords 139 (buffer-substring (point) 140 (progn (end-of-line) 141 (1- (point))))) 142 (setq keywords 143 (replace-regexp-in-string ", " "," keywords))) 144 145 (setq attrs 146 (list 147 (if (string-match ", answered," label-line) ?A ?-) 148 (if (string-match ", deleted," label-line) ?D ?-) 149 (if (string-match ", edited," label-line) ?E ?-) 150 (if (string-match ", filed," label-line) ?F ?-) 151 (if (string-match ", resent," label-line) ?R ?-) 152 (if (string-match ", unseen," label-line) ?\ ?-) 153 (if (string-match ", stored," label-line) ?S ?-))) 154 155 ;; Delete the special Babyl lines at the start, 156 ;; and the ***EOOH*** line, and the reformatted header if any. 157 (goto-char (point-min)) 158 (if reformatted 159 (progn 160 (forward-line 2) 161 ;; Delete Summary-Line headers. 162 (let ((case-fold-search t)) 163 (while (looking-at "Summary-Line:") 164 (forward-line 1))) 165 (delete-region (point-min) (point)) 166 ;; Delete the old reformatted header. 167 (re-search-forward "^[*][*][*] EOOH [*][*][*]\n") 168 (forward-line -1) 169 (let ((start (point))) 170 (search-forward "\n\n") 171 (delete-region start (point)))) 172 ;; Not reformatted. Delete the special 173 ;; lines before the real header. 174 (re-search-forward "^[*][*][*] EOOH [*][*][*]\n") 175 (delete-region (point-min) (point))) 176 177 ;; Some operations on the message header itself. 178 (goto-char (point-min)) 179 (save-restriction 180 (narrow-to-region 181 (point-min) 182 (save-excursion (search-forward "\n\n" nil 'move) (point))) 183 184 ;; Fetch or construct what we should use in the `From ' line. 185 (setq mail-from 186 (or (mail-fetch-field "Mail-From") 187 (concat "From " 188 (mail-strip-quoted-names (or (mail-fetch-field "from") 189 (mail-fetch-field "really-from") 190 (mail-fetch-field "sender") 191 "unknown")) 192 " " (current-time-string)))) 193 194 ;; If the message specifies a coding system, use it. 195 (let ((maybe-coding (mail-fetch-field "X-Coding-System"))) 196 (if maybe-coding 197 (setq coding (intern maybe-coding)))) 198 199 ;; Delete the Mail-From: header field if any. 200 (when (re-search-forward "^Mail-from:" nil t) 201 (beginning-of-line) 202 (delete-region (point) 203 (progn (forward-line 1) (point))))) 204 205 (goto-char (point-min)) 206 ;; Insert the `From ' line. 207 (insert mail-from "\n") 208 ;; Record the keywords and attributes in our special way. 209 (insert "X-BABYL-V6-ATTRIBUTES: " (apply 'string attrs) "\n") 210 (when keywords 211 (insert "X-BABYL-V6-KEYWORDS: " keywords "\n")) 212 (goto-char (point-min)) 213 ;; ``Quote'' "\nFrom " as "\n>From " 214 ;; (note that this isn't really quoting, as there is no requirement 215 ;; that "\n[>]+From " be quoted in the same transparent way.) 216 (let ((case-fold-search nil)) 217 (while (search-forward "\nFrom " nil t) 218 (forward-char -5) 219 (insert ?>))) 220 ;; Write it to the output file. 221 (write-region (point-min) (point-max) to-file t 222 'nomsg)))) 223 (kill-buffer temp-buffer)) 224 (message "Writing messages to %s...done" to-file))) 225 226(provide 'unrmail) 227 228;;; unrmail.el ends here 229 230;;; arch-tag: 14c6290d-60b2-456f-8909-5c2387de6acb 231