1 ;;; mm-extern.el --- showing message/external-body
3 ;; Copyright (C) 2000, 2001, 2002, 2003, 2004,
4 ;; 2005 Free Software Foundation, Inc.
6 ;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
7 ;; Keywords: message external-body
9 ;; This file is part of GNU Emacs.
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
13 ;; by the Free Software Foundation; either version 2, or (at your
14 ;; option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful, but
17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ;; General Public License for more details.
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.
30 (eval-when-compile (require 'cl))
36 (defvar gnus-article-mime-handles)
38 (defvar mm-extern-function-alist
39 '((local-file . mm-extern-local-file)
41 (anon-ftp . mm-extern-anon-ftp)
43 ;;; (tftp . mm-extern-tftp)
44 (mail-server . mm-extern-mail-server)
45 ;;; (afs . mm-extern-afs))
48 (defvar mm-extern-anonymous "anonymous")
50 (defun mm-extern-local-file (handle)
52 (let ((name (cdr (assq 'name (cdr (mm-handle-type handle)))))
53 (coding-system-for-read mm-binary-coding-system))
55 (error "The filename is not specified"))
56 (mm-disable-multibyte)
57 (if (file-exists-p name)
58 (mm-insert-file-contents name nil nil nil nil t)
59 (error "File %s is gone" name))))
61 (defun mm-extern-url (handle)
63 (let ((url (cdr (assq 'url (cdr (mm-handle-type handle)))))
64 (name buffer-file-name)
65 (coding-system-for-read mm-binary-coding-system))
67 (error "URL is not specified"))
68 (mm-with-unibyte-current-buffer
69 (mm-url-insert-file-contents url))
70 (mm-disable-multibyte)
71 (setq buffer-file-name name)))
73 (defun mm-extern-anon-ftp (handle)
75 (let* ((params (cdr (mm-handle-type handle)))
76 (name (cdr (assq 'name params)))
77 (site (cdr (assq 'site params)))
78 (directory (cdr (assq 'directory params)))
79 (mode (cdr (assq 'mode params)))
80 (path (concat "/" (or mm-extern-anonymous
81 (read-string (format "ID for %s: " site)))
82 "@" site ":" directory "/" name))
83 (coding-system-for-read mm-binary-coding-system))
85 (error "The filename is not specified"))
86 (mm-disable-multibyte)
87 (mm-insert-file-contents path nil nil nil nil t)))
89 (defun mm-extern-ftp (handle)
90 (let (mm-extern-anonymous)
91 (mm-extern-anon-ftp handle)))
93 (defun mm-extern-mail-server (handle)
95 (let* ((params (cdr (mm-handle-type handle)))
96 (server (cdr (assq 'server params)))
97 (subject (or (cdr (assq 'subject params)) "none"))
98 (buf (current-buffer))
100 (if (y-or-n-p (format "Send a request message to %s?" server))
101 (save-window-excursion
102 (message-mail server subject)
104 (delete-region (point) (point-max))
105 (insert-buffer-substring buf)
106 (message "Requesting external body...")
107 (message-send-and-exit)
108 (setq info "Request is sent.")
110 (setq info "Request is not sent."))
111 (goto-char (point-min))
112 (insert "[" info "]\n\n")))
115 (defun mm-inline-external-body (handle &optional no-display)
116 "Show the external-body part of HANDLE.
117 This function replaces the buffer of HANDLE with a buffer contains
119 If NO-DISPLAY is nil, display it. Otherwise, do nothing after replacing."
120 (let* ((access-type (cdr (assq 'access-type
121 (cdr (mm-handle-type handle)))))
122 (func (cdr (assq (intern
125 (error "Couldn't find access type"))))
126 mm-extern-function-alist)))
127 gnus-displaying-mime buf
129 (unless (mm-handle-cache handle)
131 (error "Access type (%s) is not supported" access-type))
133 (mm-insert-part handle)
134 (goto-char (point-max))
136 (setq handles (mm-dissect-buffer t)))
137 (unless (bufferp (car handles))
138 (mm-destroy-parts handles)
139 (error "Multipart external body is not supported"))
140 (save-excursion ;; single part
141 (set-buffer (setq buf (mm-handle-buffer handles)))
145 (funcall func handle)
148 (mm-destroy-parts handles))))
149 (mm-handle-set-cache handle handles))
150 (setq gnus-article-mime-handles
151 (mm-merge-handles gnus-article-mime-handles handles)))
155 (narrow-to-region (point) (point))
156 (gnus-display-mime (mm-handle-cache handle))
157 (mm-handle-set-undisplayer
160 (let (buffer-read-only)
162 ;; This is only valid on XEmacs.
163 (mapcar (lambda (prop)
165 (face-property 'default prop) (current-buffer)))
166 '(background background-pixmap foreground))
168 (delete-region ,(point-min-marker) ,(point-max-marker))))))))))
172 ;;; mm-extern.el ends here