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|
;;; mm-view.el --- functions for viewing MIME objects
;; Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; 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")
(unless (fboundp 'diff-mode)
(autoload 'diff-mode "diff-mode" "" t nil)))
;;;
;;; 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)
(insert "\n")
(forward-char -1)
(let ((b (point))
(annot (make-annotation (mm-get-image handle) nil 'text))
buffer-read-only)
(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 (featurep 'xemacs)
(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-gateway-unplugged 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 (let ((bsubstr (buffer-substring-no-properties
(match-beginning 2)
(match-end 2))))
(if (fboundp 'w3-coding-system-for-mime-charset)
(w3-coding-system-for-mime-charset bsubstr)
(mm-charset-to-coding-system bsubstr)))
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))
(condition-case var
(w3-region (point-min) (point-max))
(error
(delete-region (point-min) (point-max))
(let ((b (point))
(charset (mail-content-type-get
(mm-handle-type handle) 'charset)))
(if (or (eq charset 'gnus-decoded)
(eq mail-parse-charset 'gnus-decoded))
(save-restriction
(narrow-to-region (point) (point))
(mm-insert-part handle)
(goto-char (point-max)))
(insert (mm-decode-string (mm-get-part handle)
charset))))
(message
"Error while rendering html; showing as text/plain"))))))
(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)))))))))
((equal type "x-vcard")
(mm-insert-inline
handle
(concat "\n-- \n"
(ignore-errors
(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))
(save-restriction
(narrow-to-region (point) (point))
(mm-insert-part handle)
(goto-char (point-max)))
(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)
(when (or (equal type "enriched")
(equal type "richtext"))
(enriched-decode (point-min) (point-max)))
(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)
(url-gateway-unplugged 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))
(bolp (bolp))
(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-min))
(unless bolp
(insert "\n"))
(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)
(if (fboundp 'remove-specifier)
;; This is only valid on XEmacs.
(mapcar (lambda (prop)
(remove-specifier
(face-property 'default prop) (current-buffer)))
'(background background-pixmap foreground)))
(delete-region ,(point-min-marker) ,(point-max-marker)))))))))
(defun mm-display-inline-fontify (handle mode)
(let (text)
(with-temp-buffer
(mm-insert-part handle)
(funcall 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)))
(defun mm-display-patch-inline (handle)
(mm-display-inline-fontify handle 'diff-mode))
(defun mm-display-elisp-inline (handle)
(mm-display-inline-fontify handle 'emacs-lisp-mode))
(provide 'mm-view)
;;; mm-view.el ends here
|
