mail/rmail-mime.el

   1 ;;; rmail-mime.el --- Add MIME handling facility to RMAIL
   2
   3 ;; Copyright (C) 2001 Free Software Foundation, Inc.
   4
   5 ;; Author: MORIOKA Tomohiko <tomo@m17n.org>
   6 ;; Keywords: mail, news, MIME, multimedia, multilingual, encoded-word
   7
   8 ;; This file is part of SEMI (Setting for Emacs MIME Interfaces).
   9
  10 ;; This program is free software; you can redistribute it and/or
  11 ;; modify it under the terms of the GNU General Public License as
  12 ;; published by the Free Software Foundation; either version 2, or (at
  13 ;; your option) any later version.
  14
  15 ;; This program is distributed in the hope that it will be useful, but
  16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18 ;; General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Code:
  26
  27 (require 'mime-view)
  28
  29 (defun rmail-decode-header (decoded-buffer original-buffer start end)
  30   (set-buffer (get-buffer-create decoded-buffer))
  31   (erase-buffer)
  32   (insert-buffer-substring original-buffer start end)
  33   (mime-decode-header-in-buffer rmail-enable-mime))
  34
  35 (defun rmail-decode-mime-message (decoded-buffer original-buffer start end)
  36   (save-excursion
  37     (set-buffer original-buffer)
  38     (save-restriction
  39       (narrow-to-region start end)
  40       (mime-view-buffer nil decoded-buffer)))
  41   (set-buffer decoded-buffer))
  42
  43 (defun rmail-view-kill-rmail-buffer ()
  44   (if rmail-buffer (kill-buffer rmail-buffer)))
  45
  46 (defvar rmail-view-mode-map nil)
  47
  48 (defun rmail-show-mime-message ()
  49   (let ((abuf (current-buffer))
  50         (buf-name (concat (buffer-name) "-view"))
  51         buf win)
  52     (narrow-to-region (rmail-msgbeg rmail-current-message)
  53                       (rmail-msgend rmail-current-message))
  54     (setq mime-message-structure
  55           (mime-open-entity 'babyl abuf))
  56     (set-buffer (mime-display-message mime-message-structure
  57                                       buf-name nil
  58                                       nil nil rmail-view-mode-map))
  59     (setq buf (current-buffer))
  60     (make-local-variable 'font-lock-defaults)
  61     (setq font-lock-defaults
  62           '(rmail-font-lock-keywords
  63             t nil nil nil
  64             (font-lock-maximum-size . nil)
  65             (font-lock-fontify-buffer-function
  66              . rmail-fontify-buffer-function)
  67             (font-lock-unfontify-buffer-function
  68              . rmail-unfontify-buffer-function)
  69             (font-lock-inhibit-thing-lock
  70              . (lazy-lock-mode fast-lock-mode))))
  71     (make-local-variable 'rmail-buffer)
  72     (setq rmail-buffer abuf)
  73     (make-local-variable 'rmail-view-buffer)
  74     (setq rmail-view-buffer (current-buffer))
  75     (make-local-variable 'rmail-summary-buffer)
  76     (setq rmail-summary-buffer
  77           (with-current-buffer rmail-buffer
  78             rmail-summary-buffer))
  79     (make-local-variable 'rmail-current-message)
  80     (setq rmail-current-message
  81           (with-current-buffer rmail-buffer
  82             rmail-current-message))
  83     (make-local-variable 'kill-buffer-hook)
  84     (add-hook 'kill-buffer-hook 'rmail-view-kill-rmail-buffer)
  85     (let ((mode-line
  86            (with-current-buffer abuf
  87              (setq rmail-view-buffer buf)
  88              mode-line-process)))
  89       (setq mode-line-process mode-line))
  90     (if (and (setq win (get-buffer-window abuf))
  91              buf)
  92         (set-window-buffer win buf))
  93     (bury-buffer rmail-buffer)
  94     (run-hooks 'rmail-show-mime-message-hook)))
  95
  96 (defun rmail-insert-mime-forwarded-message (forward-buffer)
  97   (insert (mime-make-tag "message" "rfc822"))
  98   (insert "\n")
  99   (mime-insert-entity (with-current-buffer forward-buffer
 100                         mime-message-structure)))
 101
 102 (defun rmail-enable-mime ()
 103   (interactive)
 104   (setq rmail-enable-mime t)
 105   (rmail-show-message))
 106
 107 (defun rmail-disable-mime ()
 108   (interactive)
 109   (let ((buf rmail-buffer))
 110     (when rmail-enable-mime
 111       (remove-hook 'kill-buffer-hook 'rmail-view-kill-rmail-buffer)
 112       (set-window-buffer (selected-window) buf)
 113       (kill-buffer rmail-view-buffer))
 114     (set-buffer buf))
 115   (setq rmail-enable-mime nil
 116         rmail-view-buffer (current-buffer))
 117   (rmail-show-message))
 118
 119 (defun rmail-search-mime-message (msg regexp)
 120   "Search the message of number MSG for REGEXP.
 121 If the search succeeds, return non-nil.  Otherwise, return nil."
 122   (save-excursion
 123     (rmail-decode-mime-message " *RMAIL-temp-VIEW*"
 124                                (current-buffer)
 125                                (if (search-forward "\n*** EOOH ***\n"
 126                                                    (rmail-msgend msg) t)
 127                                    (match-end 0)
 128                                  (point))
 129                                (rmail-msgend msg))
 130     (goto-char (point-min))
 131     (prog1 (re-search-forward regexp nil t)
 132       (kill-buffer " *RMAIL-temp-VIEW*"))))
 133
 134 (defun rmail-search-mime-header (msg beg end regexp)
 135   "Search the message header of number MSG for REGEXP.
 136 If the search succeeds, return non-nil.  Otherwise, return nil."
 137   (save-excursion
 138     (rmail-decode-header " *RMAIL-temp-VIEW*"
 139                          (current-buffer)
 140                          beg end)
 141     (goto-char (point-min))
 142     (prog1 (re-search-forward regexp nil t)
 143       (kill-buffer " *RMAIL-temp-VIEW*"))))
 144
 145 (set-alist 'mime-raw-representation-type-alist 'rmail-mode
 146            (if rmail-enable-mime
 147                'binary
 148              'cooked))
 149
 150 (set-alist 'mime-preview-over-to-previous-method-alist
 151            'rmail-mode
 152            (function
 153             (lambda ()
 154               (message "Beginning of buffer")
 155               ;; (rmail-previous-undeleted-message 1)
 156               )))
 157
 158 (set-alist 'mime-preview-over-to-next-method-alist
 159            'rmail-mode
 160            (function
 161             (lambda ()
 162               (message "End of buffer")
 163               ;; (rmail-next-undeleted-message 1)
 164               )))
 165
 166 (set-alist 'mime-preview-quitting-method-alist 'rmail-mode #'rmail-quit)
 167
 168 ;; Override values defined in rmail.
 169 (eval-after-load "rmail"
 170   '(progn
 171      (define-key rmail-mode-map "v" 'rmail-enable-mime)
 172      (setq rmail-show-mime-function
 173            (function rmail-show-mime-message)
 174            rmail-insert-mime-forwarded-message-function
 175            (function rmail-insert-mime-forwarded-message))
 176      (unless rmail-view-mode-map
 177        (setq rmail-view-mode-map (mime-view-define-keymap rmail-mode-map))
 178        (define-key rmail-view-mode-map
 179          "p" (function rmail-previous-undeleted-message))
 180        (define-key rmail-view-mode-map
 181          "n" (function rmail-next-undeleted-message))
 182        (define-key rmail-view-mode-map
 183          "u" (function rmail-undelete-previous-message))
 184        (define-key rmail-view-mode-map
 185          "a" (function rmail-add-label))
 186        (define-key rmail-view-mode-map
 187          "\C-c\C-c" (function rmail-disable-mime)))))
 188
 189 ;; Override values defined in rmailsum.
 190 (eval-after-load "rmailsum"
 191   '(setq rmail-summary-line-decoder
 192          (function
 193           (lambda (string)
 194             (eword-decode-string
 195              (decode-coding-string string 'undecided))))))
 196
 197 ;; Override values defined in sendmail.
 198 (eval-after-load "sendmail"
 199   '(progn
 200      (add-hook 'mail-setup-hook 'turn-on-mime-edit)
 201      (add-hook 'mail-send-hook 'mime-edit-maybe-translate)))
 202
 203 (provide 'rmail-mime)