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4e72858007
* mm-view.el: Partially sync with the Gnus CVS. * gnus-sum.el (gnus-summary-save-article): Nix gnus-display-mime-function and gnus-article-prepare-hook.
306 lines
9.2 KiB
EmacsLisp
306 lines
9.2 KiB
EmacsLisp
;;; mm-view.el --- functions for viewing MIME objects
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;; Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;;; Code:
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(eval-when-compile (require 'cl))
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(require 'mail-parse)
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(require 'mailcap)
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(require 'mm-bodies)
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(require 'mm-decode)
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(eval-and-compile
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(autoload 'gnus-article-prepare-display "gnus-art")
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(autoload 'vcard-parse-string "vcard")
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(autoload 'vcard-format-string "vcard")
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(autoload 'fill-flowed "flow-fill")
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(unless (fboundp 'diff-mode)
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(autoload 'diff-mode "diff-mode" "" t nil)))
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;;;
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;;; Functions for displaying various formats inline
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;;;
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(defun mm-inline-image-emacs (handle)
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(let ((b (point-marker))
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buffer-read-only)
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(insert "\n")
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(put-image (mm-get-image handle) b)
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(mm-handle-set-undisplayer
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handle
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`(lambda () (remove-images ,b (1+ ,b))))))
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(defun mm-inline-image-xemacs (handle)
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(insert "\n")
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(forward-char -1)
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(let ((b (point))
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(annot (make-annotation (mm-get-image handle) nil 'text))
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buffer-read-only)
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(mm-handle-set-undisplayer
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handle
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`(lambda ()
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(let (buffer-read-only)
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(delete-annotation ,annot)
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(delete-region ,(set-marker (make-marker) b)
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,(set-marker (make-marker) (point))))))
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(set-extent-property annot 'mm t)
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(set-extent-property annot 'duplicable t)))
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(eval-and-compile
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(if (featurep 'xemacs)
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(defalias 'mm-inline-image 'mm-inline-image-xemacs)
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(defalias 'mm-inline-image 'mm-inline-image-emacs)))
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(defvar mm-w3-setup nil)
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(defun mm-setup-w3 ()
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(unless mm-w3-setup
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(require 'w3)
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(w3-do-setup)
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(require 'url)
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(require 'w3-vars)
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(require 'url-vars)
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(setq mm-w3-setup t)))
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(defun mm-inline-text (handle)
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(let ((type (mm-handle-media-subtype handle))
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text buffer-read-only)
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(cond
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((equal type "html")
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(mm-setup-w3)
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(setq text (mm-get-part handle))
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(let ((b (point))
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(url-standalone-mode t)
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(url-current-object
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(url-generic-parse-url (format "cid:%s" (mm-handle-id handle))))
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(width (window-width))
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(charset (mail-content-type-get
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(mm-handle-type handle) 'charset)))
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(save-excursion
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(insert text)
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(save-restriction
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(narrow-to-region b (point))
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(goto-char (point-min))
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(if (or (and (boundp 'w3-meta-content-type-charset-regexp)
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(re-search-forward
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w3-meta-content-type-charset-regexp nil t))
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(and (boundp 'w3-meta-charset-content-type-regexp)
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(re-search-forward
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w3-meta-charset-content-type-regexp nil t)))
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(setq charset
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(or (let ((bsubstr (buffer-substring-no-properties
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(match-beginning 2)
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(match-end 2))))
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(if (fboundp 'w3-coding-system-for-mime-charset)
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(w3-coding-system-for-mime-charset bsubstr)
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(mm-charset-to-coding-system bsubstr)))
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charset)))
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(delete-region (point-min) (point-max))
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(insert (mm-decode-string text charset))
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(save-window-excursion
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(save-restriction
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(let ((w3-strict-width width)
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;; Don't let w3 set the global version of
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;; this variable.
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(fill-column fill-column)
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(url-standalone-mode t))
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(condition-case var
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(w3-region (point-min) (point-max))
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(error
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(delete-region (point-min) (point-max))
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(let ((b (point))
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(charset (mail-content-type-get
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(mm-handle-type handle) 'charset)))
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(if (or (eq charset 'gnus-decoded)
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(eq mail-parse-charset 'gnus-decoded))
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(save-restriction
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(narrow-to-region (point) (point))
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(mm-insert-part handle)
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(goto-char (point-max)))
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(insert (mm-decode-string (mm-get-part handle)
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charset))))
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(message
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"Error while rendering html; showing as text/plain"))))))
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(mm-handle-set-undisplayer
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handle
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`(lambda ()
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(let (buffer-read-only)
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(if (functionp 'remove-specifier)
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(mapcar (lambda (prop)
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(remove-specifier
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(face-property 'default prop)
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(current-buffer)))
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'(background background-pixmap foreground)))
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(delete-region ,(point-min-marker)
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,(point-max-marker)))))))))
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((equal type "x-vcard")
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(mm-insert-inline
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handle
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(concat "\n-- \n"
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(ignore-errors
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(if (fboundp 'vcard-pretty-print)
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(vcard-pretty-print (mm-get-part handle))
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(vcard-format-string
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(vcard-parse-string (mm-get-part handle)
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'vcard-standard-filter)))))))
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(t
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(let ((b (point))
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(charset (mail-content-type-get
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(mm-handle-type handle) 'charset)))
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(if (or (eq charset 'gnus-decoded)
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;; This is probably not entirely correct, but
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;; makes rfc822 parts with embedded multiparts work.
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(eq mail-parse-charset 'gnus-decoded))
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(save-restriction
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(narrow-to-region (point) (point))
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(mm-insert-part handle)
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(goto-char (point-max)))
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(insert (mm-decode-string (mm-get-part handle) charset)))
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(when (and (equal type "plain")
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(equal (cdr (assoc 'format (mm-handle-type handle)))
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"flowed"))
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(save-restriction
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(narrow-to-region b (point))
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(goto-char b)
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(fill-flowed)
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(goto-char (point-max))))
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(save-restriction
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(narrow-to-region b (point))
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(set-text-properties (point-min) (point-max) nil)
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(when (or (equal type "enriched")
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(equal type "richtext"))
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(enriched-decode (point-min) (point-max)))
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(mm-handle-set-undisplayer
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handle
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`(lambda ()
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(let (buffer-read-only)
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(delete-region ,(point-min-marker)
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,(point-max-marker)))))))))))
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(defun mm-insert-inline (handle text)
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"Insert TEXT inline from HANDLE."
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(let ((b (point)))
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(insert text)
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(mm-handle-set-undisplayer
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handle
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`(lambda ()
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(let (buffer-read-only)
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(delete-region ,(set-marker (make-marker) b)
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,(set-marker (make-marker) (point))))))))
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(defun mm-inline-audio (handle)
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(message "Not implemented"))
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(defun mm-view-sound-file ()
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(message "Not implemented"))
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(defun mm-w3-prepare-buffer ()
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(require 'w3)
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(let ((url-standalone-mode t))
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(w3-prepare-buffer)))
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(defun mm-view-message ()
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(mm-enable-multibyte)
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(let (handles)
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(let (gnus-article-mime-handles)
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;; Double decode problem may happen. See mm-inline-message.
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(run-hooks 'gnus-article-decode-hook)
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(gnus-article-prepare-display)
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(setq handles gnus-article-mime-handles))
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(when handles
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(setq gnus-article-mime-handles
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(nconc gnus-article-mime-handles
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(if (listp (car handles))
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handles (list handles))))))
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(fundamental-mode)
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(goto-char (point-min)))
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(defun mm-inline-message (handle)
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(let ((b (point))
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(bolp (bolp))
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(charset (mail-content-type-get
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(mm-handle-type handle) 'charset))
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gnus-displaying-mime handles)
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(when (and charset
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(stringp charset))
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(setq charset (intern (downcase charset)))
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(when (eq charset 'us-ascii)
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(setq charset nil)))
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(save-excursion
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(save-restriction
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(narrow-to-region b b)
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(mm-insert-part handle)
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(let (gnus-article-mime-handles
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;; disable prepare hook
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gnus-article-prepare-hook
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(gnus-newsgroup-charset
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(or charset gnus-newsgroup-charset)))
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(run-hooks 'gnus-article-decode-hook)
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(gnus-article-prepare-display)
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(setq handles gnus-article-mime-handles))
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(goto-char (point-min))
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(unless bolp
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(insert "\n"))
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(goto-char (point-max))
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(unless (bolp)
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(insert "\n"))
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(insert "----------\n\n")
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(when handles
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(setq gnus-article-mime-handles
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(nconc gnus-article-mime-handles
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(if (listp (car handles))
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handles (list handles)))))
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(mm-handle-set-undisplayer
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handle
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`(lambda ()
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(let (buffer-read-only)
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(if (fboundp 'remove-specifier)
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;; This is only valid on XEmacs.
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(mapcar (lambda (prop)
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(remove-specifier
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(face-property 'default prop) (current-buffer)))
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'(background background-pixmap foreground)))
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(delete-region ,(point-min-marker) ,(point-max-marker)))))))))
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(defun mm-display-inline-fontify (handle mode)
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(let (text)
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(with-temp-buffer
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(mm-insert-part handle)
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(funcall mode)
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(font-lock-fontify-buffer)
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(when (fboundp 'extent-list)
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(map-extents (lambda (ext ignored)
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(set-extent-property ext 'duplicable t)
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nil)
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nil nil nil nil nil 'text-prop))
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(setq text (buffer-string)))
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(mm-insert-inline handle text)))
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(defun mm-display-patch-inline (handle)
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(mm-display-inline-fontify handle 'diff-mode))
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(defun mm-display-elisp-inline (handle)
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(mm-display-inline-fontify handle 'emacs-lisp-mode))
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(provide 'mm-view)
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;;; mm-view.el ends here
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