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authorGerd Moellmann <[email protected]>2000-09-19 13:40:08 +0000
committerGerd Moellmann <[email protected]>2000-09-19 13:40:08 +0000
commitc113de23613952ed67a3bca79363b30ab7e406c3 (patch)
treefd8063340169da2af53fa73046debd7a220904ac /lisp/gnus/mm-view.el
parent16409b0bb832ae376894cbad5892bf7623caeaaf (diff)
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+;;; mm-view.el --- Functions for viewing MIME objects
+;; Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
+
+;; Author: Lars Magne Ingebrigtsen <[email protected]>
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+
+;;; Code:
+
+(eval-when-compile (require 'cl))
+(require 'mail-parse)
+(require 'mailcap)
+(require 'mm-bodies)
+(require 'mm-decode)
+
+(eval-and-compile
+ (autoload 'gnus-article-prepare-display "gnus-art")
+ (autoload 'vcard-parse-string "vcard")
+ (autoload 'vcard-format-string "vcard")
+ (autoload 'fill-flowed "flow-fill")
+ (autoload 'diff-mode "diff-mode"))
+
+;;;
+;;; Functions for displaying various formats inline
+;;;
+(defun mm-inline-image-emacs (handle)
+ (let ((b (point-marker))
+ buffer-read-only)
+ (insert "\n")
+ (put-image (mm-get-image handle) b)
+ (mm-handle-set-undisplayer
+ handle
+ `(lambda () (remove-images ,b (1+ ,b))))))
+
+(defun mm-inline-image-xemacs (handle)
+ (let ((b (point))
+ (annot (make-annotation (mm-get-image handle) nil 'text))
+ buffer-read-only)
+ (insert "\n")
+ (mm-handle-set-undisplayer
+ handle
+ `(lambda ()
+ (let (buffer-read-only)
+ (delete-annotation ,annot)
+ (delete-region ,(set-marker (make-marker) b)
+ ,(set-marker (make-marker) (point))))))
+ (set-extent-property annot 'mm t)
+ (set-extent-property annot 'duplicable t)))
+
+(eval-and-compile
+ (if (string-match "XEmacs" (emacs-version))
+ (defalias 'mm-inline-image 'mm-inline-image-xemacs)
+ (defalias 'mm-inline-image 'mm-inline-image-emacs)))
+
+(defvar mm-w3-setup nil)
+(defun mm-setup-w3 ()
+ (unless mm-w3-setup
+ (require 'w3)
+ (w3-do-setup)
+ (require 'url)
+ (require 'w3-vars)
+ (require 'url-vars)
+ (setq mm-w3-setup t)))
+
+(defun mm-inline-text (handle)
+ (let ((type (mm-handle-media-subtype handle))
+ text buffer-read-only)
+ (cond
+ ((equal type "html")
+ (mm-setup-w3)
+ (setq text (mm-get-part handle))
+ (let ((b (point))
+ (url-standalone-mode t)
+ (url-current-object
+ (url-generic-parse-url (format "cid:%s" (mm-handle-id handle))))
+ (width (window-width))
+ (charset (mail-content-type-get
+ (mm-handle-type handle) 'charset)))
+ (save-excursion
+ (insert text)
+ (save-restriction
+ (narrow-to-region b (point))
+ (goto-char (point-min))
+ (if (or (and (boundp 'w3-meta-content-type-charset-regexp)
+ (re-search-forward
+ w3-meta-content-type-charset-regexp nil t))
+ (and (boundp 'w3-meta-charset-content-type-regexp)
+ (re-search-forward
+ w3-meta-charset-content-type-regexp nil t)))
+ (setq charset (or (w3-coding-system-for-mime-charset
+ (buffer-substring-no-properties
+ (match-beginning 2)
+ (match-end 2)))
+ charset)))
+ (delete-region (point-min) (point-max))
+ (insert (mm-decode-string text charset))
+ (save-window-excursion
+ (save-restriction
+ (let ((w3-strict-width width)
+ ;; Don't let w3 set the global version of
+ ;; this variable.
+ (fill-column fill-column)
+ (url-standalone-mode t))
+ (condition-case var
+ (w3-region (point-min) (point-max))
+ (error)))))
+ (mm-handle-set-undisplayer
+ handle
+ `(lambda ()
+ (let (buffer-read-only)
+ (if (functionp 'remove-specifier)
+ (mapcar (lambda (prop)
+ (remove-specifier
+ (face-property 'default prop)
+ (current-buffer)))
+ '(background background-pixmap foreground)))
+ (delete-region ,(point-min-marker)
+ ,(point-max-marker)))))))))
+ ((or (equal type "enriched")
+ (equal type "richtext"))
+ (save-excursion
+ (mm-with-unibyte-buffer
+ (mm-insert-part handle)
+ (save-window-excursion
+ (enriched-decode (point-min) (point-max))
+ (setq text (buffer-string)))))
+ (mm-insert-inline handle text))
+ ((equal type "x-vcard")
+ (mm-insert-inline
+ handle
+ (concat "\n-- \n"
+ (if (fboundp 'vcard-pretty-print)
+ (vcard-pretty-print (mm-get-part handle))
+ (vcard-format-string
+ (vcard-parse-string (mm-get-part handle)
+ 'vcard-standard-filter))))))
+ (t
+ (let ((b (point))
+ (charset (mail-content-type-get
+ (mm-handle-type handle) 'charset)))
+ (if (or (eq charset 'gnus-decoded)
+ ;; This is probably not entirely correct, but
+ ;; makes rfc822 parts with embedded multiparts work.
+ (eq mail-parse-charset 'gnus-decoded))
+ (mm-insert-part handle)
+ (insert (mm-decode-string (mm-get-part handle) charset)))
+ (when (and (equal type "plain")
+ (equal (cdr (assoc 'format (mm-handle-type handle)))
+ "flowed"))
+ (save-restriction
+ (narrow-to-region b (point))
+ (goto-char b)
+ (fill-flowed)
+ (goto-char (point-max))))
+ (save-restriction
+ (narrow-to-region b (point))
+ (set-text-properties (point-min) (point-max) nil)
+ (mm-handle-set-undisplayer
+ handle
+ `(lambda ()
+ (let (buffer-read-only)
+ (delete-region ,(point-min-marker)
+ ,(point-max-marker)))))))))))
+
+(defun mm-insert-inline (handle text)
+ "Insert TEXT inline from HANDLE."
+ (let ((b (point)))
+ (insert text)
+ (mm-handle-set-undisplayer
+ handle
+ `(lambda ()
+ (let (buffer-read-only)
+ (delete-region ,(set-marker (make-marker) b)
+ ,(set-marker (make-marker) (point))))))))
+
+(defun mm-inline-audio (handle)
+ (message "Not implemented"))
+
+(defun mm-view-sound-file ()
+ (message "Not implemented"))
+
+(defun mm-w3-prepare-buffer ()
+ (require 'w3)
+ (let ((url-standalone-mode t))
+ (w3-prepare-buffer)))
+
+(defun mm-view-message ()
+ (mm-enable-multibyte)
+ (let (handles)
+ (let (gnus-article-mime-handles)
+ ;; Double decode problem may happen. See mm-inline-message.
+ (run-hooks 'gnus-article-decode-hook)
+ (gnus-article-prepare-display)
+ (setq handles gnus-article-mime-handles))
+ (when handles
+ (setq gnus-article-mime-handles
+ (nconc gnus-article-mime-handles
+ (if (listp (car handles))
+ handles (list handles))))))
+ (fundamental-mode)
+ (goto-char (point-min)))
+
+(defun mm-inline-message (handle)
+ (let ((b (point))
+ (charset (mail-content-type-get
+ (mm-handle-type handle) 'charset))
+ gnus-displaying-mime handles)
+ (when (and charset
+ (stringp charset))
+ (setq charset (intern (downcase charset)))
+ (when (eq charset 'us-ascii)
+ (setq charset nil)))
+ (save-excursion
+ (save-restriction
+ (narrow-to-region b b)
+ (mm-insert-part handle)
+ (let (gnus-article-mime-handles
+ ;; disable prepare hook
+ gnus-article-prepare-hook
+ (gnus-newsgroup-charset
+ (or charset gnus-newsgroup-charset)))
+ (run-hooks 'gnus-article-decode-hook)
+ (gnus-article-prepare-display)
+ (setq handles gnus-article-mime-handles))
+ (goto-char (point-max))
+ (unless (bolp)
+ (insert "\n"))
+ (insert "----------\n\n")
+ (when handles
+ (setq gnus-article-mime-handles
+ (nconc gnus-article-mime-handles
+ (if (listp (car handles))
+ handles (list handles)))))
+ (mm-handle-set-undisplayer
+ handle
+ `(lambda ()
+ (let (buffer-read-only)
+ (condition-case nil
+ ;; This is only valid on XEmacs.
+ (mapcar (lambda (prop)
+ (remove-specifier
+ (face-property 'default prop) (current-buffer)))
+ '(background background-pixmap foreground))
+ (error nil))
+ (delete-region ,(point-min-marker) ,(point-max-marker)))))))))
+
+(defun mm-display-patch-inline (handle)
+ (let (text)
+ (with-temp-buffer
+ (mm-insert-part handle)
+ (diff-mode)
+ (font-lock-fontify-buffer)
+ (when (fboundp 'extent-list)
+ (map-extents (lambda (ext ignored)
+ (set-extent-property ext 'duplicable t)
+ nil)
+ nil nil nil nil nil 'text-prop))
+ (setq text (buffer-string)))
+ (mm-insert-inline handle text)))
+
+(provide 'mm-view)
+
+;; mm-view.el ends here