1 ;;; mm-view.el --- Functions for viewing MIME objects
2 ;; Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
5 ;; This file is part of GNU Emacs.
7 ;; GNU Emacs is free software; you can redistribute it and/or modify
8 ;; it under the terms of the GNU General Public License as published by
9 ;; the Free Software Foundation; either version 2, or (at your option)
12 ;; GNU Emacs is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ;; GNU General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with GNU Emacs; see the file COPYING. If not, write to the
19 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 ;; Boston, MA 02111-1307, USA.
26 (eval-when-compile (require 'cl))
33 (autoload 'gnus-article-prepare-display "gnus-art")
34 (autoload 'vcard-parse-string "vcard")
35 (autoload 'vcard-format-string "vcard")
36 (autoload 'fill-flowed "flow-fill")
37 (autoload 'diff-mode "diff-mode"))
40 ;;; Functions for displaying various formats inline
42 (defun mm-inline-image-emacs (handle)
43 (let ((b (point-marker))
46 (put-image (mm-get-image handle) b)
47 (mm-handle-set-undisplayer
49 `(lambda () (remove-images ,b (1+ ,b))))))
51 (defun mm-inline-image-xemacs (handle)
53 (annot (make-annotation (mm-get-image handle) nil 'text))
56 (mm-handle-set-undisplayer
59 (let (buffer-read-only)
60 (delete-annotation ,annot)
61 (delete-region ,(set-marker (make-marker) b)
62 ,(set-marker (make-marker) (point))))))
63 (set-extent-property annot 'mm t)
64 (set-extent-property annot 'duplicable t)))
67 (if (featurep 'xemacs)
68 (defalias 'mm-inline-image 'mm-inline-image-xemacs)
69 (defalias 'mm-inline-image 'mm-inline-image-emacs)))
71 (defvar mm-w3-setup nil)
79 (setq mm-w3-setup t)))
81 (defun mm-inline-text (handle)
82 (let ((type (mm-handle-media-subtype handle))
83 text buffer-read-only)
87 (setq text (mm-get-part handle))
89 (url-standalone-mode t)
91 (url-generic-parse-url (format "cid:%s" (mm-handle-id handle))))
92 (width (window-width))
93 (charset (mail-content-type-get
94 (mm-handle-type handle) 'charset)))
98 (narrow-to-region b (point))
99 (goto-char (point-min))
100 (if (or (and (boundp 'w3-meta-content-type-charset-regexp)
102 w3-meta-content-type-charset-regexp nil t))
103 (and (boundp 'w3-meta-charset-content-type-regexp)
105 w3-meta-charset-content-type-regexp nil t)))
106 (setq charset (or (w3-coding-system-for-mime-charset
107 (buffer-substring-no-properties
111 (delete-region (point-min) (point-max))
112 (insert (mm-decode-string text charset))
113 (save-window-excursion
115 (let ((w3-strict-width width)
116 ;; Don't let w3 set the global version of
118 (fill-column fill-column)
119 (url-standalone-mode t))
121 (w3-region (point-min) (point-max))
124 "Error while rendering html; showing as text/plain"))))))
125 (mm-handle-set-undisplayer
128 (let (buffer-read-only)
129 (if (functionp 'remove-specifier)
130 (mapcar (lambda (prop)
132 (face-property 'default prop)
134 '(background background-pixmap foreground)))
135 (delete-region ,(point-min-marker)
136 ,(point-max-marker)))))))))
137 ((or (equal type "enriched")
138 (equal type "richtext"))
140 (mm-with-unibyte-buffer
141 (mm-insert-part handle)
142 (save-window-excursion
143 (enriched-decode (point-min) (point-max))
144 (setq text (buffer-string)))))
145 (mm-insert-inline handle text))
146 ((equal type "x-vcard")
150 (if (fboundp 'vcard-pretty-print)
151 (vcard-pretty-print (mm-get-part handle))
153 (vcard-parse-string (mm-get-part handle)
154 'vcard-standard-filter))))))
157 (charset (mail-content-type-get
158 (mm-handle-type handle) 'charset)))
159 (if (or (eq charset 'gnus-decoded)
160 ;; This is probably not entirely correct, but
161 ;; makes rfc822 parts with embedded multiparts work.
162 (eq mail-parse-charset 'gnus-decoded))
164 (narrow-to-region (point) (point))
165 (mm-insert-part handle)
166 (goto-char (point-max)))
167 (insert (mm-decode-string (mm-get-part handle) charset)))
168 (when (and (equal type "plain")
169 (equal (cdr (assoc 'format (mm-handle-type handle)))
172 (narrow-to-region b (point))
175 (goto-char (point-max))))
177 (narrow-to-region b (point))
178 (set-text-properties (point-min) (point-max) nil)
179 (mm-handle-set-undisplayer
182 (let (buffer-read-only)
183 (delete-region ,(point-min-marker)
184 ,(point-max-marker)))))))))))
186 (defun mm-insert-inline (handle text)
187 "Insert TEXT inline from HANDLE."
190 (mm-handle-set-undisplayer
193 (let (buffer-read-only)
194 (delete-region ,(set-marker (make-marker) b)
195 ,(set-marker (make-marker) (point))))))))
197 (defun mm-inline-audio (handle)
198 (message "Not implemented"))
200 (defun mm-view-sound-file ()
201 (message "Not implemented"))
203 (defun mm-w3-prepare-buffer ()
205 (let ((url-standalone-mode t))
206 (w3-prepare-buffer)))
208 (defun mm-view-message ()
209 (mm-enable-multibyte)
211 (let (gnus-article-mime-handles)
212 ;; Double decode problem may happen. See mm-inline-message.
213 (run-hooks 'gnus-article-decode-hook)
214 (gnus-article-prepare-display)
215 (setq handles gnus-article-mime-handles))
217 (setq gnus-article-mime-handles
218 (nconc gnus-article-mime-handles
219 (if (listp (car handles))
220 handles (list handles))))))
222 (goto-char (point-min)))
224 (defun mm-inline-message (handle)
226 (charset (mail-content-type-get
227 (mm-handle-type handle) 'charset))
228 gnus-displaying-mime handles)
231 (setq charset (intern (downcase charset)))
232 (when (eq charset 'us-ascii)
236 (narrow-to-region b b)
237 (mm-insert-part handle)
238 (let (gnus-article-mime-handles
239 ;; disable prepare hook
240 gnus-article-prepare-hook
241 (gnus-newsgroup-charset
242 (or charset gnus-newsgroup-charset)))
243 (run-hooks 'gnus-article-decode-hook)
244 (gnus-article-prepare-display)
245 (setq handles gnus-article-mime-handles))
246 (goto-char (point-max))
249 (insert "----------\n\n")
251 (setq gnus-article-mime-handles
252 (nconc gnus-article-mime-handles
253 (if (listp (car handles))
254 handles (list handles)))))
255 (mm-handle-set-undisplayer
258 (let (buffer-read-only)
259 (if (fboundp 'remove-specifier)
260 ;; This is only valid on XEmacs.
261 (mapcar (lambda (prop)
263 (face-property 'default prop) (current-buffer)))
264 '(background background-pixmap foreground)))
265 (delete-region ,(point-min-marker) ,(point-max-marker)))))))))
267 (defun mm-display-inline-fontify (handle mode)
270 (mm-insert-part handle)
272 (font-lock-fontify-buffer)
273 (when (fboundp 'extent-list)
274 (map-extents (lambda (ext ignored)
275 (set-extent-property ext 'duplicable t)
277 nil nil nil nil nil 'text-prop))
278 (setq text (buffer-string)))
279 (mm-insert-inline handle text)))
281 (defun mm-display-patch-inline (handle)
282 (mm-display-inline-fontify handle 'diff-mode))
284 (defun mm-display-elisp-inline (handle)
285 (mm-display-inline-fontify handle 'emacs-lisp-mode))
289 ;; mm-view.el ends here