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emacs/lisp/gnus/mm-view.el

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;;; mm-view.el --- functions for viewing MIME objects
;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
;; Free Software Foundation, Inc.
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;; 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")
(autoload 'html2text "html2text")
(unless (fboundp 'diff-mode)
(autoload 'diff-mode "diff-mode" "" t nil)))
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(defvar mm-text-html-renderer-alist
'((w3 . mm-inline-text-html-render-with-w3)
(w3m . mm-inline-text-html-render-with-w3m)
(w3m-standalone mm-inline-render-with-stdin nil
"w3m" "-dump" "-T" "text/html")
(links mm-inline-render-with-file
mm-links-remove-leading-blank
"links" "-dump" file)
(lynx mm-inline-render-with-stdin nil
"lynx" "-dump" "-force_html" "-stdin" "-nolist")
(html2text mm-inline-render-with-function html2text))
"The attributes of renderer types for text/html.")
(defvar mm-text-html-washer-alist
'((w3 . gnus-article-wash-html-with-w3)
(w3m . gnus-article-wash-html-with-w3m)
(w3m-standalone mm-inline-wash-with-stdin nil
"w3m" "-dump" "-T" "text/html")
(links mm-inline-wash-with-file
mm-links-remove-leading-blank
"links" "-dump" file)
(lynx mm-inline-wash-with-stdin nil
"lynx" "-dump" "-force_html" "-stdin" "-nolist")
(html2text html2text))
"The attributes of washer types for text/html.")
;;; Internal variables.
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;;;
;;; Functions for displaying various formats inline
;;;
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(defun mm-inline-image-emacs (handle)
(let ((b (point-marker))
buffer-read-only)
(put-image (mm-get-image handle) b)
(insert "\n\n")
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(mm-handle-set-undisplayer
handle
`(lambda ()
(let ((b ,b)
buffer-read-only)
(remove-images b b)
(delete-region b (+ b 2)))))))
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(defun mm-inline-image-xemacs (handle)
(insert "\n\n")
(forward-char -2)
(let ((annot (make-annotation (mm-get-image handle) nil 'text))
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buffer-read-only)
(mm-handle-set-undisplayer
handle
`(lambda ()
(let ((b ,(point-marker))
buffer-read-only)
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(delete-annotation ,annot)
(delete-region (- b 2) b))))
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(set-extent-property annot 'mm t)
(set-extent-property annot 'duplicable t)))
(eval-and-compile
(if (featurep 'xemacs)
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(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-html-render-with-w3 (handle)
(mm-setup-w3)
(let ((text (mm-get-part handle))
(b (point))
(url-standalone-mode t)
(url-gateway-unplugged t)
(w3-honor-stylesheets nil)
(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
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(save-restriction
(let ((w3-strict-width width)
;; Don't let w3 set the global version of
;; this variable.
(fill-column fill-column))
(if (or debug-on-error debug-on-quit)
(w3-region (point-min) (point-max))
(condition-case ()
(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)))))))))
(defvar mm-w3m-setup nil
"Whether gnus-article-mode has been setup to use emacs-w3m.")
(defun mm-setup-w3m ()
"Setup gnus-article-mode to use emacs-w3m."
(unless mm-w3m-setup
(require 'w3m)
(unless (assq 'gnus-article-mode w3m-cid-retrieve-function-alist)
(push (cons 'gnus-article-mode 'mm-w3m-cid-retrieve)
w3m-cid-retrieve-function-alist))
(setq mm-w3m-setup t))
(setq w3m-display-inline-images mm-inline-text-html-with-images))
(defun mm-w3m-cid-retrieve-1 (url handle)
Revision: miles@gnu.org--gnu-2004/emacs--cvs-trunk--0--patch-628 Merge from gnus--rel--5.10 Patches applied: * miles@gnu.org--gnu-2004/gnus--rel--5.10--patch-55 Update from CVS 2004-10-19 Katsumi Yamaoka <yamaoka@jpl.org> * lisp/gnus/gnus-sum.el (gnus-update-summary-mark-positions): Search for dummy marks in the right way. 2004-10-18 Kevin Greiner <kgreiner@compsol.cc> * lisp/gnus/nnagent.el (nnagent-request-type): Bind gnus-agent to nil to avoid infinite recursion via gnus-get-function. 2004-10-18 Kevin Greiner <kgreiner@compsol.cc> * lisp/gnus/gnus-agent.el (gnus-agent-synchronize-group-flags): When necessary, pass full group name to gnus-request-set-marks. (gnus-agent-synchronize-group-flags): Added support for sync'ing tick marks. (gnus-agent-synchronize-flags-server): Be silent when writing file. 2004-10-18 Kevin Greiner <kgreiner@compsol.cc> * lisp/gnus/gnus-agent.el (gnus-agent-synchronize-group-flags): Replaced gnus-request-update-info with explicit code to sync the in-memory info read flags with the marks being sync'd to the backend. 2004-10-18 Kevin Greiner <kgreiner@compsol.cc> * lisp/gnus/gnus-agent.el (gnus-agent-possibly-synchronize-flags): Ignore servers that are offline. Avoids having gnus-agent-toggle-plugged first ask if you want to open a server and then, even when you responded with no, asking if you want to synchronize the server's flags. (gnus-agent-synchronize-flags-server): Rewrote read loop to handle multi-line expressions. (gnus-agent-synchronize-group-flags): New internal function. Updates marks in memory (in the info structure) AND in the backend. (gnus-agent-check-overview-buffer): Fixed range of deletion to remove entire duplicate line. Fixes merged article number bug. * lisp/gnus/gnus-util.el (gnus-remassoc): Fixed typo in documentation. * lisp/gnus/nnagent.el (nnagent-request-set-mark): Use gnus-agent-synchronize-group-flags, not backend's request-set-mark method, to ensure that synchronization updates marks in the backend and in the info (in memory) structure. 2004-10-18 Kevin Greiner <kgreiner@compsol.cc> * lisp/gnus/gnus-agent.el (gnus-agent-synchronize-flags-server): Do nothing unless plugged. Disable the agent so that an open failure causes an error. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> for Reiner Steib <Reiner.Steib@gmx.de> * lisp/gnus/gnus-agent.el (gnus-agent-fetched-hook): Add :version. (gnus-agent-go-online): Change :version. (gnus-agent-expire-unagentized-dirs) (gnus-agent-auto-agentize-methods): Add :version. 2004-10-18 Kevin Greiner <kgreiner@compsol.cc> * lisp/gnus/legacy-gnus-agent.el (gnus-agent-convert-to-compressed-agentview-prompt): New function. Used internally to only display 'gnus converting files' message when actually necessary. * lisp/gnus/gnus-sum.el (): Removed (require 'gnus-agent) as required methods now autoloaded. * lisp/gnus/gnus-int.el (gnus-request-move-article): Use gnus-agent-unfetch-articles in place of gnus-agent-expire to improve performance. 2004-10-18 Kevin Greiner <kgreiner@compsol.cc> * lisp/gnus/gnus-agent.el (gnus-agent-cat-groups): rewrote avoiding defsetf to avoid run-time CL dependencies. (gnus-agent-unfetch-articles): New function. (gnus-agent-fetch-headers): Use gnus-agent-braid-nov to validate article numbers even when local .overview file is missing. (gnus-agent-read-article-number): New function. Only accepts 27-bit article numbers. (gnus-agent-copy-nov-line, gnus-agent-uncached-articles): Use gnus-agent-read-article-number. (gnus-agent-braid-nov): Rewrote to validate article numbers coming from backend while recognizing that article numbers in .overview must be valid. * lisp/gnus/gnus-start.el (gnus-convert-old-newsrc): Changed message text as some users confused by references to .newsrc when they only have a .newsrc.eld file. (gnus-convert-mark-converter-prompt, gnus-convert-converter-needs-prompt): Fixed use of property list. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> for Katsumi Yamaoka <yamaoka@jpl.org> * lisp/gnus/gnus-agent.el (gnus-agent-restore-gcc): Use ^ and regexp-quote. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> for Lars Magne Ingebrigtsen <larsi@gnus.org> * lisp/gnus/gnus-start.el (gnus-get-unread-articles-in-group): Don't do stuff for non-living groups. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> for Lars Magne Ingebrigtsen <larsi@gnus.org> * lisp/gnus/gnus-agent.el (gnus-agent-synchronize-flags): Default to nil. (gnus-agent-regenerate-group): Using nil messages aren't valid. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> for Lars Magne Ingebrigtsen <larsi@gnus.org> * lisp/gnus/gnus-agent.el (gnus-agent-read-agentview): Inline gnus-uncompress-range. 2004-10-18 Kevin Greiner <kgreiner@xpediantsolutions.com> * lisp/gnus/legacy-gnus-agent.el (gnus-agent-convert-to-compressed-agentview): Fixed typos with help from Florian Weimer <fw@deneb.enyo.de> * lisp/gnus/gnus-agent.el (gnus-agentize): gnus-agent-send-mail-real-function no longer set to current value of message-send-mail-function but rather a lambda that calls message-send-mail-function. The change makes the agent real-time responsive to user changes to message-send-mail-function. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> for Reiner Steib <Reiner.Steib@gmx.de> * lisp/gnus/gnus-start.el (gnus-get-unread-articles): Fix last commit. 2004-10-18 Kevin Greiner <kgreiner@xpediantsolutions.com> * lisp/gnus/gnus-cache.el (gnus-cache-rename-group): New function. (gnus-cache-delete-group): New function. * lisp/gnus/gnus-agent.el (gnus-agent-rename-group): New function. (gnus-agent-delete-group): New function. (gnus-agent-save-group-info): Use gnus-command-method when `method' parameter is nil. Don't write nil entries into the active file. (gnus-agent-get-group-info): New function. (gnus-agent-get-local): Added optional parameters to avoid calling gnus-group-real-name and gnus-find-method-for-group. (gnus-agent-set-local): Delete stored entry if either min, or max, are nil. (gnus-agent-fetch-session): Reworded error/quit messages. On quit, use gnus-agent-regenerate-group to record existance of any articles fetched to disk before the quit occurred. * lisp/gnus/gnus-int.el (gnus-request-delete-group): Use gnus-cache-delete-group and gnus-agent-delete-group to keep the local disk in sync with the server. (gnus-request-rename-group): Use gnus-cache-rename-group and gnus-agent-rename-group to keep the local disk in sync with the server. * lisp/gnus/gnus-start.el (gnus-get-unread-articles): Cosmetic simplification to logic. * lisp/gnus/gnus-group.el (): (gnus-group-delete-group): No longer update gnus-cache-active-altered as gnus-request-delete-group now keeps the cache in sync. (gnus-group-list-active): Let the agent store a server's active list if currently plugged. * lisp/gnus/gnus-util.el (gnus-rename-file): New function. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> for Katsumi Yamaoka <yamaoka@jpl.org> * lisp/gnus/gnus-agent.el (gnus-agent-regenerate-group): Activate the group when the group's active is not available. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> for Katsumi Yamaoka <yamaoka@jpl.org> * lisp/gnus/gnus-agent.el (gnus-agent-read-agentview): Add a missing arg to error. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> * lisp/gnus/gnus-start.el (gnus-convert-old-newsrc): Only write the conversion message to newsrc-dribble when an actual conversion is performed. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> * lisp/gnus/gnus-agent.el (gnus-agent-read-local): Bind nnheader-file-coding-system to gnus-agent-file-coding-system to avoid the implicit assumption that they will always be equal. (gnus-agent-save-local): Bind buffer-file-coding-system, not coding-system-for-write, as the with-temp-file macro first prints to a buffer then saves the buffer. 2004-10-18 Kevin Greiner <kgreiner@xpediantsolutions.com> * lisp/gnus/legacy-gnus-agent.el (): New. Provides converters that are only loaded when gnus-convert-old-newsrc needs to call them. * lisp/gnus/gnus-agent.el (gnus-agent-read-agentview): Removed support for old file versions. (gnus-group-prepare-hook): Removed function that converted list form of gnus-agent-expire-days to group properties. * lisp/gnus/gnus-start.el (gnus-convert-old-newsrc): Registered new converters to handle old agent file formats. Added logic for a "backup before upgrading warning". (gnus-convert-mark-converter-prompt): Developers can mark functions as needing (default), or not needing, gnus-convert-old-newsrc's "backup before upgrading warning". (gnus-convert-converter-needs-prompt): Tests whether the user should be protected from potentially irreversable changes by the function. 2004-10-18 Kevin Greiner <kgreiner@xpediantsolutions.com> * lisp/gnus/gnus-int.el (gnus-request-accept-article): Inform the agent that articles are being added to a group. (gnus-request-replace-article): Inform the agent that articles need to be uncached as the cached contents are no longer valid. * lisp/gnus/gnus-agent.el (gnus-agent-file-header-cache): Removed. (gnus-agent-possibly-alter-active): Avoid null in numeric comparison. (gnus-agent-set-local): Refuse to save null in local object table. (gnus-agent-regenerate-group): The REREAD parameter can now be a list of articles that will be marked as unread. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> * lisp/gnus/gnus-range.el (gnus-sorted-range-intersection): Now accepts single-interval range of the form (min . max). Previously the range had to look like ((min . max)). Likewise, return (min . max) rather than ((min . max)). (gnus-range-map): Use gnus-range-normalize to accept single-interval range. * lisp/gnus/gnus-sum.el (gnus-summary-highlight-line): Articles stored in the cache, but not the agent, now appear with their usual face. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> * lisp/gnus/gnus-sum.el (gnus-adjust-marks): Now correctly handles a list of marks consisting of a single range {for example, (3 . 5)} rather than a list of a single range { ((3 . 5)) }. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> * lisp/gnus/gnus-sum.el (gnus-adjust-marks): Avoid splicing null INTO the uncompressed list. 2004-10-18 Kevin Greiner <kevin.greiner@compsol.cc> * lisp/gnus/gnus-draft.el (gnus-group-send-queue): Pass the group name "nndraft:queue" along to gnus-draft-send. Use gnus-agent-prompt-send-queue. (gnus-draft-send): Rebind gnus-agent-queue-mail to nil when group is "nndraft:queue". Suggested by Gaute Strokkenes <gs234@srcf.ucam.org> * lisp/gnus/gnus-group.el (gnus-group-catchup): Use new gnus-sequence-of-unread-articles, not gnus-list-of-unread-articles, to avoid exhausting memory with huge numbers of articles. Use gnus-range-map to avoid having to uncompress the unread list. (gnus-group-archive-directory, gnus-group-recent-archive-directory): Fixed invalid ange-ftp reference. * lisp/gnus/gnus-range.el (gnus-range-map): Iterate over list or sequence. (gnus-sorted-range-intersection): Intersection of two ranges without requiring that they first be uncompressed. * lisp/gnus/gnus-start.el (gnus-activate-group): Unless blocked by the caller, possibly expand the active range to include both cached and agentized articles. (gnus-convert-old-newsrc): Rewrote in anticipation of having multiple version-dependent converters. (gnus-groups-to-gnus-format): Replaced gnus-agent-save-groups with gnus-agent-save-active. (gnus-save-newsrc-file): Save dirty agent range limits. * lisp/gnus/gnus-sum.el (gnus-select-newgroup): Replaced inline code with gnus-agent-possibly-alter-active. (gnus-adjust-marked-articles): Faster handling of simple lists 2004-10-18 David Edmondson <dme@dme.org> * lisp/gnus/mm-view.el (mm-w3m-cid-retrieve-1): Don't use recursive call excessively.
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(dolist (elem handle)
(when (listp elem)
(if (equal url (mm-handle-id elem))
(progn
(mm-insert-part elem)
(throw 'found-handle (mm-handle-media-type elem))))
(if (equal "multipart" (mm-handle-media-supertype elem))
(mm-w3m-cid-retrieve-1 url elem)))))
(defun mm-w3m-cid-retrieve (url &rest args)
"Insert a content pointed by URL if it has the cid: scheme."
(when (string-match "\\`cid:" url)
(catch 'found-handle
(mm-w3m-cid-retrieve-1 (concat "<" (substring url (match-end 0)) ">")
(with-current-buffer w3m-current-buffer
gnus-article-mime-handles)))))
(defun mm-inline-text-html-render-with-w3m (handle)
"Render a text/html part using emacs-w3m."
(mm-setup-w3m)
(let ((text (mm-get-part handle))
(b (point))
(charset (mail-content-type-get (mm-handle-type handle) 'charset)))
(save-excursion
(insert (if charset (mm-decode-string text charset) text))
(save-restriction
(narrow-to-region b (point))
(unless charset
(goto-char (point-min))
(when (setq charset (w3m-detect-meta-charset))
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(delete-region (point-min) (point-max))
(insert (mm-decode-string text charset))))
(let ((w3m-safe-url-regexp mm-w3m-safe-url-regexp)
w3m-force-redisplay)
(w3m-region (point-min) (point-max) nil charset))
(when (and mm-inline-text-html-with-w3m-keymap
(boundp 'w3m-minor-mode-map)
w3m-minor-mode-map)
(add-text-properties
(point-min) (point-max)
(list 'keymap w3m-minor-mode-map
;; Put the mark meaning this part was rendered by emacs-w3m.
'mm-inline-text-html-with-w3m t))))
(mm-handle-set-undisplayer
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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))))))))
(defun mm-links-remove-leading-blank ()
;; Delete the annoying three spaces preceding each line of links
;; output.
(goto-char (point-min))
(while (re-search-forward "^ " nil t)
(delete-region (match-beginning 0) (match-end 0))))
(defun mm-inline-wash-with-file (post-func cmd &rest args)
(let ((file (mm-make-temp-file
(expand-file-name "mm" mm-tmp-directory))))
(let ((coding-system-for-write 'binary))
(write-region (point-min) (point-max) file nil 'silent))
(delete-region (point-min) (point-max))
(unwind-protect
(apply 'call-process cmd nil t nil (mapcar 'eval args))
(delete-file file))
(and post-func (funcall post-func))))
(defun mm-inline-wash-with-stdin (post-func cmd &rest args)
(let ((coding-system-for-write 'binary))
(apply 'call-process-region (point-min) (point-max)
cmd t t nil args))
(and post-func (funcall post-func)))
(defun mm-inline-render-with-file (handle post-func cmd &rest args)
(let ((source (mm-get-part handle)))
(mm-insert-inline
handle
(mm-with-unibyte-buffer
(insert source)
(apply 'mm-inline-wash-with-file post-func cmd args)
(buffer-string)))))
(defun mm-inline-render-with-stdin (handle post-func cmd &rest args)
(let ((source (mm-get-part handle)))
(mm-insert-inline
handle
(mm-with-unibyte-buffer
(insert source)
(apply 'mm-inline-wash-with-stdin post-func cmd args)
(buffer-string)))))
(defun mm-inline-render-with-function (handle func &rest args)
(let ((source (mm-get-part handle))
(charset (mail-content-type-get (mm-handle-type handle) 'charset)))
(mm-insert-inline
handle
(mm-with-multibyte-buffer
(insert (if charset
(mm-decode-string source charset)
source))
(apply func args)
(buffer-string)))))
(defun mm-inline-text-html (handle)
(let* ((func (or mm-inline-text-html-renderer mm-text-html-renderer))
(entry (assq func mm-text-html-renderer-alist))
buffer-read-only)
(if entry
(setq func (cdr entry)))
(cond
((functionp func)
(funcall func handle))
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(t
(apply (car func) handle (cdr func))))))
(defun mm-inline-text-vcard (handle)
(let (buffer-read-only)
(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))))))))
(defun mm-inline-text (handle)
(let ((b (point))
(type (mm-handle-media-subtype handle))
(charset (mail-content-type-get
(mm-handle-type handle) 'charset))
buffer-read-only)
(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))
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(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"))
(ignore-errors
(enriched-decode (point-min) (point-max))))
(mm-handle-set-undisplayer
handle
`(lambda ()
(let (buffer-read-only)
(delete-region ,(point-min-marker)
,(point-max-marker))))))))
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(defun mm-insert-inline (handle text)
"Insert TEXT inline from HANDLE."
(let ((b (point)))
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(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-honor-stylesheets nil))
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(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
(mm-merge-handles gnus-article-mime-handles handles))))
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(fundamental-mode)
(goto-char (point-min)))
(defun mm-inline-message (handle)
(let ((b (point))
(bolp (bolp))
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(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
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(gnus-newsgroup-charset
(or charset gnus-newsgroup-charset)))
(let ((gnus-original-article-buffer (mm-handle-buffer handle)))
(run-hooks 'gnus-article-decode-hook))
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(gnus-article-prepare-display)
(setq handles gnus-article-mime-handles))
(goto-char (point-min))
(unless bolp
(insert "\n"))
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(goto-char (point-max))
(unless (bolp)
(insert "\n"))
(insert "----------\n\n")
(when handles
(setq gnus-article-mime-handles
(mm-merge-handles gnus-article-mime-handles handles)))
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(mm-handle-set-undisplayer
handle
`(lambda ()
(let (buffer-read-only)
(if (fboundp 'remove-specifier)
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;; This is only valid on XEmacs.
(mapcar (lambda (prop)
(remove-specifier
(face-property 'default prop) (current-buffer)))
'(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)
;; XEmacs @#$@ version of font-lock refuses to fully turn itself
;; on for buffers whose name begins with " ". That's why we use
;; save-current-buffer/get-buffer-create rather than
;; with-temp-buffer.
(save-current-buffer
(set-buffer (generate-new-buffer "*fontification*"))
(unwind-protect
(progn
(buffer-disable-undo)
(mm-insert-part handle)
(funcall mode)
(require 'font-lock)
(let ((font-lock-verbose nil))
;; I find font-lock a bit too verbose.
(font-lock-fontify-buffer))
;; By default, XEmacs font-lock uses non-duplicable text
;; properties. This code forces all the text properties
;; to be copied along with the text.
(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)))
(kill-buffer (current-buffer))))
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(mm-insert-inline handle text)))
;; Shouldn't these functions check whether the user even wants to use
;; font-lock? At least under XEmacs, this fontification is pretty
;; much unconditional. Also, it would be nice to change for the size
;; of the fontified region.
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(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))
;; id-signedData OBJECT IDENTIFIER ::= { iso(1) member-body(2)
;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 2 }
(defvar mm-pkcs7-signed-magic
(mm-string-as-unibyte
(apply 'concat
(mapcar 'char-to-string
(list ?\x30 ?\x5c ?\x28 ?\x80 ?\x5c ?\x7c ?\x81 ?\x2e ?\x5c
?\x7c ?\x82 ?\x2e ?\x2e ?\x5c ?\x7c ?\x83 ?\x2e ?\x2e
?\x2e ?\x5c ?\x29 ?\x06 ?\x09 ?\x5c ?\x2a ?\x86 ?\x48
?\x86 ?\xf7 ?\x0d ?\x01 ?\x07 ?\x02)))))
;; id-envelopedData OBJECT IDENTIFIER ::= { iso(1) member-body(2)
;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 3 }
(defvar mm-pkcs7-enveloped-magic
(mm-string-as-unibyte
(apply 'concat
(mapcar 'char-to-string
(list ?\x30 ?\x5c ?\x28 ?\x80 ?\x5c ?\x7c ?\x81 ?\x2e ?\x5c
?\x7c ?\x82 ?\x2e ?\x2e ?\x5c ?\x7c ?\x83 ?\x2e ?\x2e
?\x2e ?\x5c ?\x29 ?\x06 ?\x09 ?\x5c ?\x2a ?\x86 ?\x48
?\x86 ?\xf7 ?\x0d ?\x01 ?\x07 ?\x03)))))
(defun mm-view-pkcs7-get-type (handle)
(mm-with-unibyte-buffer
(mm-insert-part handle)
(cond ((looking-at mm-pkcs7-enveloped-magic)
'enveloped)
((looking-at mm-pkcs7-signed-magic)
'signed)
(t
(error "Could not identify PKCS#7 type")))))
(defun mm-view-pkcs7 (handle)
(case (mm-view-pkcs7-get-type handle)
(enveloped (mm-view-pkcs7-decrypt handle))
(signed (mm-view-pkcs7-verify handle))
(otherwise (error "Unknown or unimplemented PKCS#7 type"))))
(defun mm-view-pkcs7-verify (handle)
;; A bogus implementation of PKCS#7. FIXME::
(mm-insert-part handle)
(goto-char (point-min))
(if (search-forward "Content-Type: " nil t)
(delete-region (point-min) (match-beginning 0)))
(goto-char (point-max))
(if (re-search-backward "--\r?\n?" nil t)
(delete-region (match-end 0) (point-max)))
(goto-char (point-min))
(while (search-forward "\r\n" nil t)
(replace-match "\n"))
(message "Verify signed PKCS#7 message is unimplemented.")
(sit-for 1)
t)
(autoload 'gnus-completing-read-maybe-default "gnus-util" nil nil 'macro)
(defun mm-view-pkcs7-decrypt (handle)
(insert-buffer-substring (mm-handle-buffer handle))
(goto-char (point-min))
(insert "MIME-Version: 1.0\n")
(mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m")
(smime-decrypt-region
(point-min) (point-max)
(if (= (length smime-keys) 1)
(cadar smime-keys)
(smime-get-key-by-email
(gnus-completing-read-maybe-default
(concat "Decipher using which key? "
(if smime-keys (concat "(default " (caar smime-keys) ") ")
""))
smime-keys nil nil nil nil (car-safe (car-safe smime-keys))))))
(goto-char (point-min))
(while (search-forward "\r\n" nil t)
(replace-match "\n"))
(goto-char (point-min)))
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(provide 'mm-view)
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;;; arch-tag: b60e749a-d05c-47f2-bccd-bdaa59327cb2
;;; mm-view.el ends here