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619ac84f46
* message.el (message-forward): Use mule4. * mm-util.el (mm-string-as-unibyte): New. * message.el (message-forward): Use it. * message.el (message-cite-original-without-signature): Don't peel off the blank line. (message-get-reply-headers): Add Cc if it is not in follow-to. * message.el (message-send-mail): Content-Type may not be there. By Alberto Lusiani. * gnus-art.el (article-display-x-face): Insert X-Face if there is not. * rfc2047.el (rfc2047-fold-region): Don't insert LWSP if there is one. * gnus-win.el (gnus-configure-windows): switch-to-buffer in XEmacs. (gnus-remove-some-windows): Ditto. * mm-decode.el (mm-interactively-view-part): Don't copy-sequence handle. * gnus-art.el (gnus-mime-view-part): Copy it. (gnus-mime-view-part-as-type): Add into gnus-article-mime-handles. * nnmail.el (nnmail-get-new-mail): Find group only if file is not orig-file. Use ',source. * nnslashdot.el (nnslashdot-request-list): Get the right year. By Lars Magne Ingebrigtsen. * pop3.el (pop3-get-message-count): Andrew Innes <andrewi@gnu.org>'s patch of 1999-12-01 was not fully committed.
854 lines
27 KiB
EmacsLisp
854 lines
27 KiB
EmacsLisp
;;; mm-decode.el --- Functions for decoding MIME things
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;; Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
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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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(require 'mail-parse)
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(require 'mailcap)
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(require 'mm-bodies)
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(eval-when-compile (require 'cl))
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(eval-and-compile
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(autoload 'mm-inline-partial "mm-partial")
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(autoload 'mm-insert-inline "mm-view"))
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(defgroup mime-display ()
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"Display of MIME in mail and news articles."
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:link '(custom-manual "(emacs-mime)Customization")
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:version "21.1"
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:group 'mail
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:group 'news
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:group 'multimedia)
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;;; Convenience macros.
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(defmacro mm-handle-buffer (handle)
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`(nth 0 ,handle))
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(defmacro mm-handle-type (handle)
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`(nth 1 ,handle))
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(defsubst mm-handle-media-type (handle)
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(if (stringp (car handle))
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(car handle)
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(car (mm-handle-type handle))))
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(defsubst mm-handle-media-supertype (handle)
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(car (split-string (mm-handle-media-type handle) "/")))
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(defsubst mm-handle-media-subtype (handle)
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(cadr (split-string (mm-handle-media-type handle) "/")))
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(defmacro mm-handle-encoding (handle)
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`(nth 2 ,handle))
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(defmacro mm-handle-undisplayer (handle)
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`(nth 3 ,handle))
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(defmacro mm-handle-set-undisplayer (handle function)
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`(setcar (nthcdr 3 ,handle) ,function))
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(defmacro mm-handle-disposition (handle)
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`(nth 4 ,handle))
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(defmacro mm-handle-description (handle)
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`(nth 5 ,handle))
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(defmacro mm-handle-cache (handle)
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`(nth 6 ,handle))
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(defmacro mm-handle-set-cache (handle contents)
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`(setcar (nthcdr 6 ,handle) ,contents))
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(defmacro mm-handle-id (handle)
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`(nth 7 ,handle))
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(defmacro mm-make-handle (&optional buffer type encoding undisplayer
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disposition description cache
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id)
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`(list ,buffer ,type ,encoding ,undisplayer
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,disposition ,description ,cache ,id))
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(defcustom mm-inline-media-tests
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'(("image/jpeg"
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mm-inline-image
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(lambda (handle)
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(mm-valid-and-fit-image-p 'jpeg handle)))
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("image/png"
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mm-inline-image
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(lambda (handle)
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(mm-valid-and-fit-image-p 'png handle)))
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("image/gif"
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mm-inline-image
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(lambda (handle)
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(mm-valid-and-fit-image-p 'gif handle)))
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("image/tiff"
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mm-inline-image
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(lambda (handle)
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(mm-valid-and-fit-image-p 'tiff handle)) )
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("image/xbm"
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mm-inline-image
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(lambda (handle)
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(mm-valid-and-fit-image-p 'xbm handle)))
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("image/x-xbitmap"
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mm-inline-image
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(lambda (handle)
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(mm-valid-and-fit-image-p 'xbm handle)))
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("image/xpm"
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mm-inline-image
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(lambda (handle)
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(mm-valid-and-fit-image-p 'xpm handle)))
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("image/x-pixmap"
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mm-inline-image
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(lambda (handle)
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(mm-valid-and-fit-image-p 'xpm handle)))
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("image/bmp"
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mm-inline-image
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(lambda (handle)
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(mm-valid-and-fit-image-p 'bmp handle)))
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("image/x-portable-bitmap"
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mm-inline-image
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(lambda (handle)
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(mm-valid-and-fit-image-p 'pbm handle)))
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("text/plain" mm-inline-text identity)
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("text/enriched" mm-inline-text identity)
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("text/richtext" mm-inline-text identity)
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("text/x-patch" mm-display-patch-inline
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(lambda (handle)
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(locate-library "diff-mode")))
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("application/emacs-lisp" mm-display-elisp-inline identity)
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("text/html"
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mm-inline-text
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(lambda (handle)
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(locate-library "w3")))
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("text/x-vcard"
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mm-inline-text
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(lambda (handle)
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(or (featurep 'vcard)
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(locate-library "vcard"))))
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("message/delivery-status" mm-inline-text identity)
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("message/rfc822" mm-inline-message identity)
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("message/partial" mm-inline-partial identity)
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("text/.*" mm-inline-text identity)
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("audio/wav" mm-inline-audio
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(lambda (handle)
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(and (or (featurep 'nas-sound) (featurep 'native-sound))
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(device-sound-enabled-p))))
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("audio/au"
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mm-inline-audio
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(lambda (handle)
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(and (or (featurep 'nas-sound) (featurep 'native-sound))
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(device-sound-enabled-p))))
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("application/pgp-signature" ignore identity)
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("multipart/alternative" ignore identity)
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("multipart/mixed" ignore identity)
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("multipart/related" ignore identity))
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"Alist of media types/tests saying whether types can be displayed inline."
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:type '(repeat (list (string :tag "MIME type")
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(function :tag "Display function")
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(function :tag "Display test")))
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:group 'mime-display)
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(defcustom mm-inlined-types
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'("image/.*" "text/.*" "message/delivery-status" "message/rfc822"
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"message/partial" "application/emacs-lisp"
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"application/pgp-signature")
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"List of media types that are to be displayed inline."
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:type '(repeat string)
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:group 'mime-display)
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(defcustom mm-automatic-display
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'("text/plain" "text/enriched" "text/richtext" "text/html"
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"text/x-vcard" "image/.*" "message/delivery-status" "multipart/.*"
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"message/rfc822" "text/x-patch" "application/pgp-signature"
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"application/emacs-lisp")
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"A list of MIME types to be displayed automatically."
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:type '(repeat string)
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:group 'mime-display)
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(defcustom mm-attachment-override-types '("text/x-vcard")
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"Types to have \"attachment\" ignored if they can be displayed inline."
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:type '(repeat string)
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:group 'mime-display)
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(defcustom mm-inline-override-types nil
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"Types to be treated as attachments even if they can be displayed inline."
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:type '(repeat string)
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:group 'mime-display)
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(defcustom mm-automatic-external-display nil
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"List of MIME type regexps that will be displayed externally automatically."
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:type '(repeat string)
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:group 'mime-display)
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(defcustom mm-discouraged-alternatives nil
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"List of MIME types that are discouraged when viewing multipart/alternative.
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Viewing agents are supposed to view the last possible part of a message,
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as that is supposed to be the richest. However, users may prefer other
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types instead, and this list says what types are most unwanted. If,
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for instance, text/html parts are very unwanted, and text/richtext are
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somewhat unwanted, then the value of this variable should be set
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to:
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(\"text/html\" \"text/richtext\")"
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:type '(repeat string)
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:group 'mime-display)
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(defvar mm-tmp-directory
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(cond ((fboundp 'temp-directory) (temp-directory))
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((boundp 'temporary-file-directory) temporary-file-directory)
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("/tmp/"))
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"Where mm will store its temporary files.")
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(defcustom mm-inline-large-images nil
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"If non-nil, then all images fit in the buffer."
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:type 'boolean
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:group 'mime-display)
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;;; Internal variables.
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(defvar mm-dissection-list nil)
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(defvar mm-last-shell-command "")
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(defvar mm-content-id-alist nil)
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;; According to RFC2046, in particular, in a digest, the default
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;; Content-Type value for a body part is changed from "text/plain" to
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;; "message/rfc822".
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(defvar mm-dissect-default-type "text/plain")
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(defvar mm-viewer-completion-map
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(let ((map (make-sparse-keymap 'mm-viewer-completion-map)))
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(set-keymap-parent map minibuffer-local-completion-map)
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map)
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"Keymap for input viewer with completion.")
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;; Should we bind other key to minibuffer-complete-word?
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(define-key mm-viewer-completion-map " " 'self-insert-command)
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;;; The functions.
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(defun mm-dissect-buffer (&optional no-strict-mime)
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"Dissect the current buffer and return a list of MIME handles."
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(save-excursion
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(let (ct ctl type subtype cte cd description id result)
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(save-restriction
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(mail-narrow-to-head)
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(when (or no-strict-mime
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(mail-fetch-field "mime-version"))
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(setq ct (mail-fetch-field "content-type")
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ctl (ignore-errors (mail-header-parse-content-type ct))
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cte (mail-fetch-field "content-transfer-encoding")
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cd (mail-fetch-field "content-disposition")
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description (mail-fetch-field "content-description")
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id (mail-fetch-field "content-id"))))
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(when cte
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(setq cte (mail-header-strip cte)))
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(if (or (not ctl)
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(not (string-match "/" (car ctl))))
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(mm-dissect-singlepart
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(list mm-dissect-default-type)
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(and cte (intern (downcase (mail-header-remove-whitespace
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(mail-header-remove-comments
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cte)))))
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no-strict-mime
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(and cd (ignore-errors (mail-header-parse-content-disposition cd)))
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description)
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(setq type (split-string (car ctl) "/"))
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(setq subtype (cadr type)
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type (pop type))
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(setq
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result
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(cond
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((equal type "multipart")
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(let ((mm-dissect-default-type (if (equal subtype "digest")
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"message/rfc822"
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"text/plain")))
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(cons (car ctl) (mm-dissect-multipart ctl))))
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(t
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(mm-dissect-singlepart
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ctl
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(and cte (intern (downcase (mail-header-remove-whitespace
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(mail-header-remove-comments
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cte)))))
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no-strict-mime
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(and cd (ignore-errors (mail-header-parse-content-disposition cd)))
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description id))))
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(when id
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(when (string-match " *<\\(.*\\)> *" id)
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(setq id (match-string 1 id)))
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(push (cons id result) mm-content-id-alist))
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result))))
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(defun mm-dissect-singlepart (ctl cte &optional force cdl description id)
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(when (or force
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(if (equal "text/plain" (car ctl))
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(assoc 'format ctl)
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t))
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(let ((res (mm-make-handle
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(mm-copy-to-buffer) ctl cte nil cdl description nil id)))
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(push (car res) mm-dissection-list)
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res)))
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(defun mm-remove-all-parts ()
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"Remove all MIME handles."
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(interactive)
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(mapcar 'mm-remove-part mm-dissection-list)
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(setq mm-dissection-list nil))
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(defun mm-dissect-multipart (ctl)
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(goto-char (point-min))
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(let* ((boundary (concat "\n--" (mail-content-type-get ctl 'boundary)))
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(close-delimiter (concat (regexp-quote boundary) "--[ \t]*$"))
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start parts
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(end (save-excursion
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(goto-char (point-max))
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(if (re-search-backward close-delimiter nil t)
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(match-beginning 0)
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(point-max)))))
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(setq boundary (concat (regexp-quote boundary) "[ \t]*$"))
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(while (and (< (point) end) (re-search-forward boundary end t))
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(goto-char (match-beginning 0))
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(when start
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(save-excursion
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(save-restriction
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(narrow-to-region start (point))
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(setq parts (nconc (list (mm-dissect-buffer t)) parts)))))
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(forward-line 2)
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(setq start (point)))
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(when (and start (< start end))
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(save-excursion
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(save-restriction
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(narrow-to-region start end)
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(setq parts (nconc (list (mm-dissect-buffer t)) parts)))))
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(nreverse parts)))
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(defun mm-copy-to-buffer ()
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"Copy the contents of the current buffer to a fresh buffer."
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(save-excursion
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(let ((obuf (current-buffer))
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beg)
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(goto-char (point-min))
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(search-forward-regexp "^\n" nil t)
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(setq beg (point))
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(set-buffer (generate-new-buffer " *mm*"))
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(insert-buffer-substring obuf beg)
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(current-buffer))))
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(defun mm-display-part (handle &optional no-default)
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"Display the MIME part represented by HANDLE.
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Returns nil if the part is removed; inline if displayed inline;
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external if displayed external."
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(save-excursion
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(mailcap-parse-mailcaps)
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(if (mm-handle-displayed-p handle)
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(mm-remove-part handle)
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(let* ((type (mm-handle-media-type handle))
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(method (mailcap-mime-info type)))
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(if (mm-inlined-p handle)
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(progn
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(forward-line 1)
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(mm-display-inline handle)
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'inline)
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(when (or method
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(not no-default))
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(if (and (not method)
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(equal "text" (car (split-string type))))
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(progn
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(forward-line 1)
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(mm-insert-inline handle (mm-get-part handle))
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'inline)
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(mm-display-external
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handle (or method 'mailcap-save-binary-file)))))))))
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(defun mm-display-external (handle method)
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"Display HANDLE using METHOD."
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(let ((outbuf (current-buffer)))
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(mm-with-unibyte-buffer
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(if (functionp method)
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(let ((cur (current-buffer)))
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(if (eq method 'mailcap-save-binary-file)
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(progn
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(set-buffer (generate-new-buffer " *mm*"))
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(setq method nil))
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(mm-insert-part handle)
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(let ((win (get-buffer-window cur t)))
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(when win
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(select-window win)))
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(switch-to-buffer (generate-new-buffer " *mm*")))
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(mm-set-buffer-file-coding-system mm-binary-coding-system)
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(insert-buffer-substring cur)
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(goto-char (point-min))
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(message "Viewing with %s" method)
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(let ((mm (current-buffer))
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(non-viewer (assq 'non-viewer
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(mailcap-mime-info
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(mm-handle-media-type handle) t))))
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(unwind-protect
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(if method
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(funcall method)
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(mm-save-part handle))
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(when (and (not non-viewer)
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method)
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(mm-handle-set-undisplayer handle mm)))))
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;; The function is a string to be executed.
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(mm-insert-part handle)
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(let* ((dir (make-temp-name (expand-file-name "emm." mm-tmp-directory)))
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(filename (mail-content-type-get
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(mm-handle-disposition handle) 'filename))
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(mime-info (mailcap-mime-info
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(mm-handle-media-type handle) t))
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(needsterm (or (assoc "needsterm" mime-info)
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(assoc "needsterminal" mime-info)))
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(copiousoutput (assoc "copiousoutput" mime-info))
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file buffer)
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;; We create a private sub-directory where we store our files.
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(make-directory dir)
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(set-file-modes dir 448)
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(if filename
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(setq file (expand-file-name (file-name-nondirectory filename)
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dir))
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(setq file (make-temp-name (expand-file-name "mm." dir))))
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(let ((coding-system-for-write mm-binary-coding-system))
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(write-region (point-min) (point-max) file nil 'nomesg))
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(message "Viewing with %s" method)
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(cond (needsterm
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(unwind-protect
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(start-process "*display*" nil
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"xterm"
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"-e" shell-file-name
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shell-command-switch
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(mm-mailcap-command
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method file (mm-handle-type handle)))
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(mm-handle-set-undisplayer handle (cons file buffer)))
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(message "Displaying %s..." (format method file))
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'external)
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(copiousoutput
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(with-current-buffer outbuf
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(forward-line 1)
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(mm-insert-inline
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handle
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(unwind-protect
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(progn
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(call-process shell-file-name nil
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(setq buffer
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(generate-new-buffer "*mm*"))
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nil
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shell-command-switch
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(mm-mailcap-command
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method file (mm-handle-type handle)))
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(if (buffer-live-p buffer)
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(save-excursion
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(set-buffer buffer)
|
|
(buffer-string))))
|
|
(progn
|
|
(ignore-errors (delete-file file))
|
|
(ignore-errors (delete-directory
|
|
(file-name-directory file)))
|
|
(ignore-errors (kill-buffer buffer))))))
|
|
'inline)
|
|
(t
|
|
(unwind-protect
|
|
(start-process "*display*"
|
|
(setq buffer
|
|
(generate-new-buffer "*mm*"))
|
|
shell-file-name
|
|
shell-command-switch
|
|
(mm-mailcap-command
|
|
method file (mm-handle-type handle)))
|
|
(mm-handle-set-undisplayer handle (cons file buffer)))
|
|
(message "Displaying %s..." (format method file))
|
|
'external)))))))
|
|
|
|
(defun mm-mailcap-command (method file type-list)
|
|
(let ((ctl (cdr type-list))
|
|
(beg 0)
|
|
(uses-stdin t)
|
|
out sub total)
|
|
(while (string-match "%{\\([^}]+\\)}\\|%s\\|%t\\|%%" method beg)
|
|
(push (substring method beg (match-beginning 0)) out)
|
|
(setq beg (match-end 0)
|
|
total (match-string 0 method)
|
|
sub (match-string 1 method))
|
|
(cond
|
|
((string= total "%%")
|
|
(push "%" out))
|
|
((string= total "%s")
|
|
(setq uses-stdin nil)
|
|
(push (mm-quote-arg file) out))
|
|
((string= total "%t")
|
|
(push (mm-quote-arg (car type-list)) out))
|
|
(t
|
|
(push (mm-quote-arg (or (cdr (assq (intern sub) ctl)) "")) out))))
|
|
(push (substring method beg (length method)) out)
|
|
(if uses-stdin
|
|
(progn
|
|
(push "<" out)
|
|
(push (mm-quote-arg file) out)))
|
|
(mapconcat 'identity (nreverse out) "")))
|
|
|
|
(defun mm-remove-parts (handles)
|
|
"Remove the displayed MIME parts represented by HANDLES."
|
|
(if (and (listp handles)
|
|
(bufferp (car handles)))
|
|
(mm-remove-part handles)
|
|
(let (handle)
|
|
(while (setq handle (pop handles))
|
|
(cond
|
|
((stringp handle)
|
|
;; Do nothing.
|
|
)
|
|
((and (listp handle)
|
|
(stringp (car handle)))
|
|
(mm-remove-parts (cdr handle)))
|
|
(t
|
|
(mm-remove-part handle)))))))
|
|
|
|
(defun mm-destroy-parts (handles)
|
|
"Remove the displayed MIME parts represented by HANDLES."
|
|
(if (and (listp handles)
|
|
(bufferp (car handles)))
|
|
(mm-destroy-part handles)
|
|
(let (handle)
|
|
(while (setq handle (pop handles))
|
|
(cond
|
|
((stringp handle)
|
|
;; Do nothing.
|
|
)
|
|
((and (listp handle)
|
|
(stringp (car handle)))
|
|
(mm-destroy-parts (cdr handle)))
|
|
(t
|
|
(mm-destroy-part handle)))))))
|
|
|
|
(defun mm-remove-part (handle)
|
|
"Remove the displayed MIME part represented by HANDLE."
|
|
(when (listp handle)
|
|
(let ((object (mm-handle-undisplayer handle)))
|
|
(ignore-errors
|
|
(cond
|
|
;; Internally displayed part.
|
|
((mm-annotationp object)
|
|
(delete-annotation object))
|
|
((or (functionp object)
|
|
(and (listp object)
|
|
(eq (car object) 'lambda)))
|
|
(funcall object))
|
|
;; Externally displayed part.
|
|
((consp object)
|
|
(ignore-errors (delete-file (car object)))
|
|
(ignore-errors (delete-directory (file-name-directory (car object))))
|
|
(ignore-errors (kill-buffer (cdr object))))
|
|
((bufferp object)
|
|
(when (buffer-live-p object)
|
|
(kill-buffer object)))))
|
|
(mm-handle-set-undisplayer handle nil))))
|
|
|
|
(defun mm-display-inline (handle)
|
|
(let* ((type (mm-handle-media-type handle))
|
|
(function (cadr (mm-assoc-string-match mm-inline-media-tests type))))
|
|
(funcall function handle)
|
|
(goto-char (point-min))))
|
|
|
|
(defun mm-assoc-string-match (alist type)
|
|
(dolist (elem alist)
|
|
(when (string-match (car elem) type)
|
|
(return elem))))
|
|
|
|
(defun mm-inlinable-p (handle)
|
|
"Say whether HANDLE can be displayed inline."
|
|
(let ((alist mm-inline-media-tests)
|
|
(type (mm-handle-media-type handle))
|
|
test)
|
|
(while alist
|
|
(when (string-match (caar alist) type)
|
|
(setq test (caddar alist)
|
|
alist nil)
|
|
(setq test (funcall test handle)))
|
|
(pop alist))
|
|
test))
|
|
|
|
(defun mm-automatic-display-p (handle)
|
|
"Say whether the user wants HANDLE to be displayed automatically."
|
|
(let ((methods mm-automatic-display)
|
|
(type (mm-handle-media-type handle))
|
|
method result)
|
|
(while (setq method (pop methods))
|
|
(when (and (not (mm-inline-override-p handle))
|
|
(string-match method type)
|
|
(mm-inlinable-p handle))
|
|
(setq result t
|
|
methods nil)))
|
|
result))
|
|
|
|
(defun mm-inlined-p (handle)
|
|
"Say whether the user wants HANDLE to be displayed automatically."
|
|
(let ((methods mm-inlined-types)
|
|
(type (mm-handle-media-type handle))
|
|
method result)
|
|
(while (setq method (pop methods))
|
|
(when (and (not (mm-inline-override-p handle))
|
|
(string-match method type)
|
|
(mm-inlinable-p handle))
|
|
(setq result t
|
|
methods nil)))
|
|
result))
|
|
|
|
(defun mm-attachment-override-p (handle)
|
|
"Say whether HANDLE should have attachment behavior overridden."
|
|
(let ((types mm-attachment-override-types)
|
|
(type (mm-handle-media-type handle))
|
|
ty)
|
|
(catch 'found
|
|
(while (setq ty (pop types))
|
|
(when (and (string-match ty type)
|
|
(mm-inlinable-p handle))
|
|
(throw 'found t))))))
|
|
|
|
(defun mm-inline-override-p (handle)
|
|
"Say whether HANDLE should have inline behavior overridden."
|
|
(let ((types mm-inline-override-types)
|
|
(type (mm-handle-media-type handle))
|
|
ty)
|
|
(catch 'found
|
|
(while (setq ty (pop types))
|
|
(when (string-match ty type)
|
|
(throw 'found t))))))
|
|
|
|
(defun mm-automatic-external-display-p (type)
|
|
"Return the user-defined method for TYPE."
|
|
(let ((methods mm-automatic-external-display)
|
|
method result)
|
|
(while (setq method (pop methods))
|
|
(when (string-match method type)
|
|
(setq result t
|
|
methods nil)))
|
|
result))
|
|
|
|
(defun mm-destroy-part (handle)
|
|
"Destroy the data structures connected to HANDLE."
|
|
(when (listp handle)
|
|
(mm-remove-part handle)
|
|
(when (buffer-live-p (mm-handle-buffer handle))
|
|
(kill-buffer (mm-handle-buffer handle)))))
|
|
|
|
(defun mm-handle-displayed-p (handle)
|
|
"Say whether HANDLE is displayed or not."
|
|
(mm-handle-undisplayer handle))
|
|
|
|
;;;
|
|
;;; Functions for outputting parts
|
|
;;;
|
|
|
|
(defun mm-get-part (handle)
|
|
"Return the contents of HANDLE as a string."
|
|
(mm-with-unibyte-buffer
|
|
(mm-insert-part handle)
|
|
(buffer-string)))
|
|
|
|
(defun mm-insert-part (handle)
|
|
"Insert the contents of HANDLE in the current buffer."
|
|
(let ((cur (current-buffer)))
|
|
(save-excursion
|
|
(if (member (mm-handle-media-supertype handle) '("text" "message"))
|
|
(with-temp-buffer
|
|
(insert-buffer-substring (mm-handle-buffer handle))
|
|
(mm-decode-content-transfer-encoding
|
|
(mm-handle-encoding handle)
|
|
(mm-handle-media-type handle))
|
|
(let ((temp (current-buffer)))
|
|
(set-buffer cur)
|
|
(insert-buffer-substring temp)))
|
|
(mm-with-unibyte-buffer
|
|
(insert-buffer-substring (mm-handle-buffer handle))
|
|
(mm-decode-content-transfer-encoding
|
|
(mm-handle-encoding handle)
|
|
(mm-handle-media-type handle))
|
|
(let ((temp (current-buffer)))
|
|
(set-buffer cur)
|
|
(insert-buffer-substring temp)))))))
|
|
|
|
(defvar mm-default-directory nil)
|
|
|
|
(defun mm-save-part (handle)
|
|
"Write HANDLE to a file."
|
|
(let* ((name (mail-content-type-get (mm-handle-type handle) 'name))
|
|
(filename (mail-content-type-get
|
|
(mm-handle-disposition handle) 'filename))
|
|
file)
|
|
(when filename
|
|
(setq filename (file-name-nondirectory filename)))
|
|
(setq file
|
|
(read-file-name "Save MIME part to: "
|
|
(expand-file-name
|
|
(or filename name "")
|
|
(or mm-default-directory default-directory))))
|
|
(setq mm-default-directory (file-name-directory file))
|
|
(when (or (not (file-exists-p file))
|
|
(yes-or-no-p (format "File %s already exists; overwrite? "
|
|
file)))
|
|
(mm-save-part-to-file handle file))))
|
|
|
|
(defun mm-save-part-to-file (handle file)
|
|
(mm-with-unibyte-buffer
|
|
(mm-insert-part handle)
|
|
(let ((coding-system-for-write 'binary)
|
|
;; Don't re-compress .gz & al. Arguably we should make
|
|
;; `file-name-handler-alist' nil, but that would chop
|
|
;; ange-ftp, which is reasonable to use here.
|
|
(inhibit-file-name-operation 'write-region)
|
|
(inhibit-file-name-handlers
|
|
(cons 'jka-compr-handler inhibit-file-name-handlers)))
|
|
(write-region (point-min) (point-max) file))))
|
|
|
|
(defun mm-pipe-part (handle)
|
|
"Pipe HANDLE to a process."
|
|
(let* ((name (mail-content-type-get (mm-handle-type handle) 'name))
|
|
(command
|
|
(read-string "Shell command on MIME part: " mm-last-shell-command)))
|
|
(mm-with-unibyte-buffer
|
|
(mm-insert-part handle)
|
|
(shell-command-on-region (point-min) (point-max) command nil))))
|
|
|
|
(defun mm-interactively-view-part (handle)
|
|
"Display HANDLE using METHOD."
|
|
(let* ((type (mm-handle-media-type handle))
|
|
(methods
|
|
(mapcar (lambda (i) (list (cdr (assoc 'viewer i))))
|
|
(mailcap-mime-info type 'all)))
|
|
(method (let ((minibuffer-local-completion-map
|
|
mm-viewer-completion-map))
|
|
(completing-read "Viewer: " methods))))
|
|
(when (string= method "")
|
|
(error "No method given"))
|
|
(if (string-match "^[^% \t]+$" method)
|
|
(setq method (concat method " %s")))
|
|
(mm-display-external handle method)))
|
|
|
|
(defun mm-preferred-alternative (handles &optional preferred)
|
|
"Say which of HANDLES are preferred."
|
|
(let ((prec (if preferred (list preferred)
|
|
(mm-preferred-alternative-precedence handles)))
|
|
p h result type handle)
|
|
(while (setq p (pop prec))
|
|
(setq h handles)
|
|
(while h
|
|
(setq handle (car h))
|
|
(setq type (mm-handle-media-type handle))
|
|
(when (and (equal p type)
|
|
(mm-automatic-display-p handle)
|
|
(or (stringp (car handle))
|
|
(not (mm-handle-disposition handle))
|
|
(equal (car (mm-handle-disposition handle))
|
|
"inline")))
|
|
(setq result handle
|
|
h nil
|
|
prec nil))
|
|
(pop h)))
|
|
result))
|
|
|
|
(defun mm-preferred-alternative-precedence (handles)
|
|
"Return the precedence based on HANDLES and `mm-discouraged-alternatives'."
|
|
(let ((seq (nreverse (mapcar #'mm-handle-media-type
|
|
handles))))
|
|
(dolist (disc (reverse mm-discouraged-alternatives))
|
|
(dolist (elem (copy-sequence seq))
|
|
(when (string-match disc elem)
|
|
(setq seq (nconc (delete elem seq) (list elem))))))
|
|
seq))
|
|
|
|
(defun mm-get-content-id (id)
|
|
"Return the handle(s) referred to by ID."
|
|
(cdr (assoc id mm-content-id-alist)))
|
|
|
|
(defun mm-get-image (handle)
|
|
"Return an image instance based on HANDLE."
|
|
(let ((type (mm-handle-media-subtype handle))
|
|
spec)
|
|
;; Allow some common translations.
|
|
(setq type
|
|
(cond
|
|
((equal type "x-pixmap")
|
|
"xpm")
|
|
((equal type "x-xbitmap")
|
|
"xbm")
|
|
((equal type "x-portable-bitmap")
|
|
"pbm")
|
|
(t type)))
|
|
(or (mm-handle-cache handle)
|
|
(mm-with-unibyte-buffer
|
|
(mm-insert-part handle)
|
|
(prog1
|
|
(setq spec
|
|
(ignore-errors
|
|
;; Avoid testing `make-glyph' since W3 may define
|
|
;; a bogus version of it.
|
|
(if (fboundp 'create-image)
|
|
(create-image (buffer-string) (intern type) 'data-p)
|
|
(cond
|
|
((equal type "xbm")
|
|
;; xbm images require special handling, since
|
|
;; the only way to create glyphs from these
|
|
;; (without a ton of work) is to write them
|
|
;; out to a file, and then create a file
|
|
;; specifier.
|
|
(let ((file (make-temp-name
|
|
(expand-file-name "emm.xbm"
|
|
mm-tmp-directory))))
|
|
(unwind-protect
|
|
(progn
|
|
(write-region (point-min) (point-max) file)
|
|
(make-glyph (list (cons 'x file))))
|
|
(ignore-errors
|
|
(delete-file file)))))
|
|
(t
|
|
(make-glyph
|
|
(vector (intern type) :data (buffer-string))))))))
|
|
(mm-handle-set-cache handle spec))))))
|
|
|
|
(defun mm-image-fit-p (handle)
|
|
"Say whether the image in HANDLE will fit the current window."
|
|
(let ((image (mm-get-image handle)))
|
|
(if (fboundp 'glyph-width)
|
|
;; XEmacs' glyphs can actually tell us about their width, so
|
|
;; lets be nice and smart about them.
|
|
(or mm-inline-large-images
|
|
(and (< (glyph-width image) (window-pixel-width))
|
|
(< (glyph-height image) (window-pixel-height))))
|
|
(let* ((size (image-size image))
|
|
(w (car size))
|
|
(h (cdr size)))
|
|
(or mm-inline-large-images
|
|
(and (< h (1- (window-height))) ; Don't include mode line.
|
|
(< w (window-width))))))))
|
|
|
|
(defun mm-valid-image-format-p (format)
|
|
"Say whether FORMAT can be displayed natively by Emacs."
|
|
(cond
|
|
;; Handle XEmacs
|
|
((fboundp 'valid-image-instantiator-format-p)
|
|
(valid-image-instantiator-format-p format))
|
|
;; Handle Emacs 21
|
|
((fboundp 'image-type-available-p)
|
|
(and (display-graphic-p)
|
|
(image-type-available-p format)))
|
|
;; Nobody else can do images yet.
|
|
(t
|
|
nil)))
|
|
|
|
(defun mm-valid-and-fit-image-p (format handle)
|
|
"Say whether FORMAT can be displayed natively and HANDLE fits the window."
|
|
(and (mm-valid-image-format-p format)
|
|
(mm-image-fit-p handle)))
|
|
|
|
(provide 'mm-decode)
|
|
|
|
;;; mm-decode.el ends here
|