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 msg)
  36   (save-excursion
  37     (set-buffer original-buffer)
  38     (save-restriction
  39       (narrow-to-region (rmail-msgbeg msg)
  40                         (rmail-msgend msg))
  41       (setq mime-message-structure
  42             (mime-open-entity 'babyl original-buffer))
  43       (mime-display-message mime-message-structure decoded-buffer)))
  44   (set-buffer decoded-buffer))
  45
  46 (defun rmail-view-kill-rmail-buffer ()
  47   (if rmail-buffer (kill-buffer rmail-buffer)))
  48
  49 (defvar rmail-view-mode-map nil)
  50
  51 (defun rmail-show-mime-message ()
  52   (let ((abuf (current-buffer))
  53         (buf-name (concat (buffer-name) "-view"))
  54         buf win)
  55     (narrow-to-region (rmail-msgbeg rmail-current-message)
  56                       (rmail-msgend rmail-current-message))
  57     (setq mime-message-structure
  58           (mime-open-entity 'babyl abuf))
  59     (set-buffer (mime-display-message mime-message-structure
  60                                       buf-name nil
  61                                       nil nil rmail-view-mode-map))
  62     (setq buf (current-buffer))
  63     (make-local-variable 'font-lock-defaults)
  64     (setq font-lock-defaults
  65           '(rmail-font-lock-keywords
  66             t nil nil nil
  67             (font-lock-maximum-size . nil)
  68             (font-lock-fontify-buffer-function
  69              . rmail-fontify-buffer-function)
  70             (font-lock-unfontify-buffer-function
  71              . rmail-unfontify-buffer-function)
  72             (font-lock-inhibit-thing-lock
  73              . (lazy-lock-mode fast-lock-mode))))
  74     (make-local-variable 'rmail-buffer)
  75     (setq rmail-buffer abuf)
  76     (make-local-variable 'rmail-view-buffer)
  77     (setq rmail-view-buffer (current-buffer))
  78     (make-local-variable 'rmail-summary-buffer)
  79     (setq rmail-summary-buffer
  80           (with-current-buffer rmail-buffer
  81             rmail-summary-buffer))
  82     (make-local-variable 'rmail-current-message)
  83     (setq rmail-current-message
  84           (with-current-buffer rmail-buffer
  85             rmail-current-message))
  86     (make-local-variable 'kill-buffer-hook)
  87     (add-hook 'kill-buffer-hook 'rmail-view-kill-rmail-buffer)
  88     (let ((mode-line
  89            (with-current-buffer abuf
  90              (setq rmail-view-buffer buf)
  91              mode-line-process)))
  92       (setq mode-line-process mode-line))
  93     (if (and (setq win (get-buffer-window abuf))
  94              buf)
  95         (set-window-buffer win buf))
  96     (bury-buffer rmail-buffer)
  97     (run-hooks 'rmail-show-mime-message-hook)))
  98
  99 (defun rmail-insert-mime-forwarded-message (forward-buffer)
 100   (insert (mime-make-tag "message" "rfc822"))
 101   (insert "\n")
 102   (mime-insert-entity (with-current-buffer forward-buffer
 103                         mime-message-structure)))
 104
 105 (defun rmail-enable-mime ()
 106   (interactive)
 107   (setq rmail-enable-mime t)
 108   (rmail-show-message))
 109
 110 (defun rmail-disable-mime ()
 111   (interactive)
 112   (let ((buf rmail-buffer))
 113     (when rmail-enable-mime
 114       (remove-hook 'kill-buffer-hook 'rmail-view-kill-rmail-buffer)
 115       (set-window-buffer (selected-window) buf)
 116       (kill-buffer rmail-view-buffer))
 117     (set-buffer buf))
 118   (setq rmail-enable-mime nil
 119         rmail-view-buffer (current-buffer))
 120   (rmail-show-message))
 121
 122 (defun rmail-search-mime-message (msg regexp)
 123   "Search the message of number MSG for REGEXP.
 124 If the search succeeds, return non-nil.  Otherwise, return nil."
 125   (save-excursion
 126     (rmail-decode-mime-message " *RMAIL-temp-VIEW*" (current-buffer) msg)
 127     (goto-char (point-min))
 128     (prog1 (re-search-forward regexp nil t)
 129       (kill-buffer " *RMAIL-temp-VIEW*"))))
 130
 131 (defun rmail-search-mime-header (msg beg end regexp)
 132   "Search the message header of number MSG for REGEXP.
 133 If the search succeeds, return non-nil.  Otherwise, return nil."
 134   (save-excursion
 135     (rmail-decode-header " *RMAIL-temp-VIEW*"
 136                          (current-buffer)
 137                          beg end)
 138     (goto-char (point-min))
 139     (prog1 (re-search-forward regexp nil t)
 140       (kill-buffer " *RMAIL-temp-VIEW*"))))
 141
 142 (set-alist 'mime-raw-representation-type-alist 'rmail-mode
 143            (if rmail-enable-mime
 144                'binary
 145              'cooked))
 146
 147 (set-alist 'mime-preview-over-to-previous-method-alist
 148            'rmail-mode
 149            (function
 150             (lambda ()
 151               (message "Beginning of buffer")
 152               ;; (rmail-previous-undeleted-message 1)
 153               )))
 154
 155 (set-alist 'mime-preview-over-to-next-method-alist
 156            'rmail-mode
 157            (function
 158             (lambda ()
 159               (message "End of buffer")
 160               ;; (rmail-next-undeleted-message 1)
 161               )))
 162
 163 (set-alist 'mime-preview-quitting-method-alist 'rmail-mode #'rmail-quit)
 164
 165 ;; Override values defined in rmail.
 166 (eval-after-load "rmail"
 167   '(progn
 168      (define-key rmail-mode-map "v" 'rmail-enable-mime)
 169      (setq rmail-show-mime-function
 170            (function rmail-show-mime-message)
 171            rmail-insert-mime-forwarded-message-function
 172            (function rmail-insert-mime-forwarded-message))
 173      (unless rmail-view-mode-map
 174        (setq rmail-view-mode-map (mime-view-define-keymap rmail-mode-map))
 175        (define-key rmail-view-mode-map
 176          "p" (function rmail-previous-undeleted-message))
 177        (define-key rmail-view-mode-map
 178          "n" (function rmail-next-undeleted-message))
 179        (define-key rmail-view-mode-map
 180          "u" (function rmail-undelete-previous-message))
 181        (define-key rmail-view-mode-map
 182          "a" (function rmail-add-label))
 183        (define-key rmail-view-mode-map
 184          "\C-c\C-c" (function rmail-disable-mime)))))
 185
 186 ;; Override values defined in rmailsum.
 187 (eval-after-load "rmailsum"
 188   '(setq rmail-summary-line-decoder
 189          (function
 190           (lambda (string)
 191             (eword-decode-string
 192              (decode-coding-string string 'undecided))))))
 193
 194 ;; Override values defined in sendmail.
 195 (eval-after-load "sendmail"
 196   '(progn
 197      (add-hook 'mail-setup-hook 'turn-on-mime-edit)
 198      (add-hook 'mail-send-hook 'mime-edit-maybe-translate)))
 199
 200 (provide 'rmail-mime)