1 ;;; mm-view.el --- Functions for viewing MIME objects
2 ;; Copyright (C) 1998, 1999, 2000, 2001 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)
55 (annot (make-annotation (mm-get-image handle) nil 'text))
57 (mm-handle-set-undisplayer
60 (let (buffer-read-only)
61 (delete-annotation ,annot)
62 (delete-region ,(set-marker (make-marker) b)
63 ,(set-marker (make-marker) (point))))))
64 (set-extent-property annot 'mm t)
65 (set-extent-property annot 'duplicable t)))
68 (if (featurep 'xemacs)
69 (defalias 'mm-inline-image 'mm-inline-image-xemacs)
70 (defalias 'mm-inline-image 'mm-inline-image-emacs)))
72 (defvar mm-w3-setup nil)
80 (setq mm-w3-setup t)))
82 (defun mm-inline-text (handle)
83 (let ((type (mm-handle-media-subtype handle))
84 text buffer-read-only)
88 (setq text (mm-get-part handle))
90 (url-standalone-mode t)
92 (url-generic-parse-url (format "cid:%s" (mm-handle-id handle))))
93 (width (window-width))
94 (charset (mail-content-type-get
95 (mm-handle-type handle) 'charset)))
99 (narrow-to-region b (point))
100 (goto-char (point-min))
101 (if (or (and (boundp 'w3-meta-content-type-charset-regexp)
103 w3-meta-content-type-charset-regexp nil t))
104 (and (boundp 'w3-meta-charset-content-type-regexp)
106 w3-meta-charset-content-type-regexp nil t)))
108 (or (let ((bsubstr (buffer-substring-no-properties
111 (if (fboundp 'w3-coding-system-for-mime-charset)
112 (w3-coding-system-for-mime-charset bsubstr)
113 (mm-charset-to-coding-system bsubstr)))
115 (delete-region (point-min) (point-max))
116 (insert (mm-decode-string text charset))
117 (save-window-excursion
119 (let ((w3-strict-width width)
120 ;; Don't let w3 set the global version of
122 (fill-column fill-column)
123 (url-standalone-mode t))
125 (w3-region (point-min) (point-max))
127 (delete-region (point-min) (point-max))
129 (charset (mail-content-type-get
130 (mm-handle-type handle) 'charset)))
131 (if (or (eq charset 'gnus-decoded)
132 (eq mail-parse-charset 'gnus-decoded))
134 (narrow-to-region (point) (point))
135 (mm-insert-part handle)
136 (goto-char (point-max)))
137 (insert (mm-decode-string (mm-get-part handle)
140 "Error while rendering html; showing as text/plain"))))))
141 (mm-handle-set-undisplayer
144 (let (buffer-read-only)
145 (if (functionp 'remove-specifier)
146 (mapcar (lambda (prop)
148 (face-property 'default prop)
150 '(background background-pixmap foreground)))
151 (delete-region ,(point-min-marker)
152 ,(point-max-marker)))))))))
153 ((or (equal type "enriched")
154 (equal type "richtext"))
156 (mm-with-unibyte-buffer
157 (mm-insert-part handle)
158 (save-window-excursion
159 (enriched-decode (point-min) (point-max))
160 (setq text (buffer-string)))))
161 (mm-insert-inline handle text))
162 ((equal type "x-vcard")
166 (if (fboundp 'vcard-pretty-print)
167 (vcard-pretty-print (mm-get-part handle))
169 (vcard-parse-string (mm-get-part handle)
170 'vcard-standard-filter))))))
173 (charset (mail-content-type-get
174 (mm-handle-type handle) 'charset)))
175 (if (or (eq charset 'gnus-decoded)
176 ;; This is probably not entirely correct, but
177 ;; makes rfc822 parts with embedded multiparts work.
178 (eq mail-parse-charset 'gnus-decoded))
180 (narrow-to-region (point) (point))
181 (mm-insert-part handle)
182 (goto-char (point-max)))
183 (insert (mm-decode-string (mm-get-part handle) charset)))
184 (when (and (equal type "plain")
185 (equal (cdr (assoc 'format (mm-handle-type handle)))
188 (narrow-to-region b (point))
191 (goto-char (point-max))))
193 (narrow-to-region b (point))
194 (set-text-properties (point-min) (point-max) nil)
195 (mm-handle-set-undisplayer
198 (let (buffer-read-only)
199 (delete-region ,(point-min-marker)
200 ,(point-max-marker)))))))))))
202 (defun mm-insert-inline (handle text)
203 "Insert TEXT inline from HANDLE."
206 (mm-handle-set-undisplayer
209 (let (buffer-read-only)
210 (delete-region ,(set-marker (make-marker) b)
211 ,(set-marker (make-marker) (point))))))))
213 (defun mm-inline-audio (handle)
214 (message "Not implemented"))
216 (defun mm-view-sound-file ()
217 (message "Not implemented"))
219 (defun mm-w3-prepare-buffer ()
221 (let ((url-standalone-mode t))
222 (w3-prepare-buffer)))
224 (defun mm-view-message ()
225 (mm-enable-multibyte)
227 (let (gnus-article-mime-handles)
228 ;; Double decode problem may happen. See mm-inline-message.
229 (run-hooks 'gnus-article-decode-hook)
230 (gnus-article-prepare-display)
231 (setq handles gnus-article-mime-handles))
233 (setq gnus-article-mime-handles
234 (mm-merge-handles gnus-article-mime-handles handles))))
236 (goto-char (point-min)))
238 (defun mm-inline-message (handle)
241 (charset (mail-content-type-get
242 (mm-handle-type handle) 'charset))
243 gnus-displaying-mime handles)
246 (setq charset (intern (downcase charset)))
247 (when (eq charset 'us-ascii)
251 (narrow-to-region b b)
252 (mm-insert-part handle)
253 (let (gnus-article-mime-handles
254 ;; disable prepare hook
255 gnus-article-prepare-hook
256 (gnus-newsgroup-charset
257 (or charset gnus-newsgroup-charset)))
258 (run-hooks 'gnus-article-decode-hook)
259 (gnus-article-prepare-display)
260 (setq handles gnus-article-mime-handles))
261 (goto-char (point-min))
264 (goto-char (point-max))
267 (insert "----------\n\n")
269 (setq gnus-article-mime-handles
270 (mm-merge-handles gnus-article-mime-handles handles)))
271 (mm-handle-set-undisplayer
274 (let (buffer-read-only)
275 (if (fboundp 'remove-specifier)
276 ;; This is only valid on XEmacs.
277 (mapcar (lambda (prop)
279 (face-property 'default prop) (current-buffer)))
280 '(background background-pixmap foreground)))
281 (delete-region ,(point-min-marker) ,(point-max-marker)))))))))
283 (defun mm-display-inline-fontify (handle mode)
285 ;; XEmacs @#$@ version of font-lock refuses to fully turn itself
286 ;; on for buffers whose name begins with " ". That's why we use
287 ;; save-current-buffer/get-buffer-create rather than
290 (set-buffer (generate-new-buffer "*fontification*"))
293 (buffer-disable-undo)
294 (mm-insert-part handle)
296 (let ((font-lock-verbose nil))
297 ;; I find font-lock a bit too verbose.
298 (font-lock-fontify-buffer))
299 ;; By default, XEmacs font-lock uses non-duplicable text
300 ;; properties. This code forces all the text properties
301 ;; to be copied along with the text.
302 (when (fboundp 'extent-list)
303 (map-extents (lambda (ext ignored)
304 (set-extent-property ext 'duplicable t)
306 nil nil nil nil nil 'text-prop))
307 (setq text (buffer-string)))
308 (kill-buffer (current-buffer))))
309 (mm-insert-inline handle text)))
311 ;; Shouldn't these functions check whether the user even wants to use
312 ;; font-lock? At least under XEmacs, this fontification is pretty
313 ;; much unconditional. Also, it would be nice to change for the size
314 ;; of the fontified region.
316 (defun mm-display-patch-inline (handle)
317 (mm-display-inline-fontify handle 'diff-mode))
319 (defun mm-display-elisp-inline (handle)
320 (mm-display-inline-fontify handle 'emacs-lisp-mode))
324 ;; mm-view.el ends here