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https://git.savannah.gnu.org/git/emacs.git
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0992ec3b0b
* mh-compat.el: Rename mh-cl-flet to mh-flet and convert alias to macro using patch from Katsumi Yamaoka <yamaoka@jpl.org>. * mh-thread.el (mh-thread-set-tables): * mh-show.el (mh-gnus-article-highlight-citation): * mh-mime.el (mh-display-with-external-viewer): (mh-mime-display, mh-press-button, mh-push-button): (mh-display-emphasis): Call mh-flet instead of mh-cl-flet.
1845 lines
74 KiB
EmacsLisp
1845 lines
74 KiB
EmacsLisp
;;; mh-mime.el --- MH-E MIME support
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;; Copyright (C) 1993, 1995, 2001-2016 Free Software Foundation, Inc.
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;; Author: Bill Wohler <wohler@newt.com>
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;; Maintainer: Bill Wohler <wohler@newt.com>
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;; Keywords: mail
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;; See: mh-e.el
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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 3 of the License, or
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;; (at your option) 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. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Message composition of MIME message is done with either MH-style
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;; directives for mhn or mhbuild (MH 6.8 or later) or MML (MIME Meta
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;; Language) tags.
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;; TODO:
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;; Paragraph code should not fill # lines if MIME enabled.
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;; Implement mh-auto-mh-to-mime (if non-nil, \\[mh-send-letter]
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;; invokes mh-mh-to-mime automatically before sending.)
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;; Actually, instead of mh-auto-mh-to-mime,
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;; should read automhnproc from profile.
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;; MIME option to mh-forward command to move to content-description
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;; insertion point.
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;;; Change Log:
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;;; Code:
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(require 'mh-e)
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(require 'mh-gnus) ;needed because mh-gnus.el not compiled
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(require 'font-lock)
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(require 'gnus-util)
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(require 'mailcap)
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(require 'mm-decode)
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(require 'mm-view)
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(require 'mml)
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(autoload 'article-emphasize "gnus-art")
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(autoload 'gnus-eval-format "gnus-spec")
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(autoload 'mail-content-type-get "mail-parse")
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(autoload 'mail-decode-encoded-word-string "mail-parse")
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(autoload 'mail-header-parse-content-type "mail-parse")
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(autoload 'mail-header-strip "mail-parse")
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(autoload 'mail-strip-quoted-names "mail-utils")
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(autoload 'message-options-get "message")
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(autoload 'message-options-set "message")
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(autoload 'message-options-set-recipient "message")
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(autoload 'mm-decode-body "mm-bodies")
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(autoload 'mm-uu-dissect "mm-uu")
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(autoload 'mml-unsecure-message "mml-sec")
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(autoload 'rfc2047-decode-region "rfc2047")
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(autoload 'widget-convert-button "wid-edit")
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;;; Variables
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;; This has to be a macro, since we do: (setf (mh-buffer-data) ...)
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;;;###mh-autoload
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(defmacro mh-buffer-data ()
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"Convenience macro to get the MIME data structures of the current buffer."
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`(gethash (current-buffer) mh-globals-hash))
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;; Structure to keep track of MIME handles on a per buffer basis.
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(mh-defstruct (mh-buffer-data (:conc-name mh-mime-)
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(:constructor mh-make-buffer-data))
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(handles ()) ; List of MIME handles
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(handles-cache (make-hash-table)) ; Cache to avoid multiple decodes of
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; nested messages
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(parts-count 0) ; The button number is generated from
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; this number
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(part-index-hash (make-hash-table))) ; Avoid incrementing the part number
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; for nested messages
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(defvar mh-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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("application/x-emacs-lisp" mm-display-elisp-inline identity)
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("text/html"
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,(if (fboundp 'mm-inline-text-html) 'mm-inline-text-html 'mm-inline-text)
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(lambda (handle)
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(or (and (boundp 'mm-inline-text-html-renderer)
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mm-inline-text-html-renderer)
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(and (boundp 'mm-text-html-renderer) mm-text-html-renderer))))
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("text/x-vcard"
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mh-mm-inline-text-vcard
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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" mh-mm-inline-message identity)
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;;("message/partial" mm-inline-partial identity)
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;;("message/external-body" mm-inline-external-body 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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("application/x-pkcs7-signature" ignore identity)
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("application/pkcs7-signature" ignore identity)
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("application/x-pkcs7-mime" ignore identity)
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("application/pkcs7-mime" 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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;; Disable audio and image
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("audio/.*" ignore ignore)
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("image/.*" ignore ignore)
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;; Default to displaying as text
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(".*" mm-inline-text mh-mm-readable-p))
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"Alist of media types/tests saying whether types can be displayed inline.")
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(defvar mh-mime-save-parts-directory nil
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"Default to use for `mh-mime-save-parts-default-directory'.
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Set from last use.")
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;; Copied from gnus-art.el (should be checked for other cool things that can
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;; be added to the buttons)
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(defvar mh-mime-button-commands
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'((mh-press-button "\r" "Toggle Display")))
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(defvar mh-mime-button-map
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(let ((map (make-sparse-keymap)))
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(unless (>= (string-to-number emacs-version) 21)
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;; XEmacs doesn't care.
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(set-keymap-parent map mh-show-mode-map))
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(mh-do-in-gnu-emacs
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(define-key map [mouse-2] 'mh-push-button))
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(mh-do-in-xemacs
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(define-key map '(button2) 'mh-push-button))
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(dolist (c mh-mime-button-commands)
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(define-key map (cadr c) (car c)))
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map))
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(defvar mh-mime-button-line-format-alist
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'((?T long-type ?s)
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(?d description ?s)
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(?p index ?s)
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(?e dots ?s)))
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(defvar mh-mime-button-line-format "%{%([%p. %d%T]%)%}%e\n")
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(defvar mh-mime-security-button-pressed nil)
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(defvar mh-mime-security-button-line-format "%{%([[%t:%i]%D]%)%}\n")
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(defvar mh-mime-security-button-end-line-format "%{%([[End of %t]%D]%)%}\n")
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(defvar mh-mime-security-button-line-format-alist
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'((?t type ?s)
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(?i info ?s)
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(?d details ?s)
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(?D pressed-details ?s)))
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(defvar mh-mime-security-button-map
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(let ((map (make-sparse-keymap)))
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(unless (>= (string-to-number emacs-version) 21)
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(set-keymap-parent map mh-show-mode-map))
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(define-key map "\r" 'mh-press-button)
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(mh-do-in-gnu-emacs
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(define-key map [mouse-2] 'mh-push-button))
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(mh-do-in-xemacs
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(define-key map '(button2) 'mh-push-button))
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map))
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;;; MH-Folder Commands
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;; Alphabetical.
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;;;###mh-autoload
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(defun mh-display-with-external-viewer (part-index)
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"View attachment externally.
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If Emacs does not know how to view an attachment, you could save
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it into a file and then run some program to open it. It is
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easier, however, to launch the program directly from MH-E with
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this command. While you'll most likely use this to view
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spreadsheets and documents, it is also useful to use your browser
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to view HTML attachments with higher fidelity than what Emacs can
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provide.
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This command displays the attachment associated with the button
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under the cursor. If the cursor is not located over a button,
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then the cursor first moves to the next button, wrapping to the
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beginning of the message if necessary. You can provide a numeric
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prefix argument PART-INDEX to view the attachment labeled with
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that number.
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This command tries to provide a reasonable default for the viewer
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by calling the Emacs function `mailcap-mime-info'. This function
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usually reads the file \"/etc/mailcap\"."
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(interactive "P")
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(when (consp part-index) (setq part-index (car part-index)))
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(mh-folder-mime-action
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part-index
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#'(lambda ()
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(let* ((part (get-text-property (point) 'mh-data))
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(type (mm-handle-media-type part))
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(methods (mapcar (lambda (x) (list (cdr (assoc 'viewer x))))
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(mailcap-mime-info type 'all)))
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(def (caar methods))
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(prompt (format "Viewer%s: " (if def
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(format " (default %s)" def)
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"")))
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(method (completing-read prompt methods nil nil nil nil def))
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(folder mh-show-folder-buffer)
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(buffer-read-only nil))
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(when (string-match "^[^% \t]+$" method)
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(setq method (concat method " %s")))
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(mh-flet
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((mm-handle-set-external-undisplayer
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(handle function)
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(mh-handle-set-external-undisplayer folder handle function)))
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(unwind-protect (mm-display-external part method)
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(set-buffer-modified-p nil)))))
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nil))
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;;;###mh-autoload
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(defun mh-folder-inline-mime-part (part-index)
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"Show attachment verbatim.
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You can view the raw contents of an attachment with this command.
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This command displays (or hides) the contents of the attachment
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associated with the button under the cursor verbatim. If the
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cursor is not located over a button, then the cursor first moves
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to the next button, wrapping to the beginning of the message if
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necessary.
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You can also provide a numeric prefix argument PART-INDEX to view
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the attachment labeled with that number."
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(interactive "P")
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(when (consp part-index) (setq part-index (car part-index)))
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(mh-folder-mime-action part-index #'mh-mime-inline-part nil))
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(defun mh-mime-inline-part ()
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"Toggle display of the raw MIME part."
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(interactive)
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(let* ((buffer-read-only nil)
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(data (get-text-property (point) 'mh-data))
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(inserted-flag (get-text-property (point) 'mh-mime-inserted))
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(displayed-flag (mm-handle-displayed-p data))
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(point (point))
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start end)
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(cond ((and data (not inserted-flag) (not displayed-flag))
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(let ((contents (mm-get-part data)))
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(add-text-properties (mh-line-beginning-position)
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(mh-line-end-position) '(mh-mime-inserted t))
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(setq start (point-marker))
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(forward-line 1)
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(mm-insert-inline data contents)
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(setq end (point-marker))
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(add-text-properties
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start (progn (goto-char start) (mh-line-end-position))
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`(mh-region (,start . ,end)))))
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((and data (or inserted-flag displayed-flag))
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(mh-press-button)
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(message "MIME part already inserted")))
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(goto-char point)
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(set-buffer-modified-p nil)))
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;;;###mh-autoload
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(defun mh-folder-save-mime-part (part-index)
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"Save (output) attachment.
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This command saves the attachment associated with the button under the
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cursor. If the cursor is not located over a button, then the cursor
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first moves to the next button, wrapping to the beginning of the
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message if necessary.
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You can also provide a numeric prefix argument PART-INDEX to save the
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attachment labeled with that number.
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This command prompts you for a filename and suggests a specific name
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if it is available."
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(interactive "P")
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(when (consp part-index) (setq part-index (car part-index)))
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(mh-folder-mime-action part-index #'mh-mime-save-part nil))
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(defun mh-mime-save-part ()
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"Save MIME part at point."
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(interactive)
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(let ((data (get-text-property (point) 'mh-data)))
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(when data
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(let ((mm-default-directory
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(file-name-as-directory (or mh-mime-save-parts-directory
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default-directory))))
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(mh-mm-save-part data)
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(setq mh-mime-save-parts-directory mm-default-directory)))))
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;;;###mh-autoload
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(defun mh-folder-toggle-mime-part (part-index)
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"View attachment.
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This command displays (or hides) the attachment associated with
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the button under the cursor. If the cursor is not located over a
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button, then the cursor first moves to the next button, wrapping
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to the beginning of the message if necessary. This command has
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the advantage over related commands of working from the MH-Folder
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buffer.
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You can also provide a numeric prefix argument PART-INDEX to view
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the attachment labeled with that number. If Emacs does not know
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how to display the attachment, then Emacs offers to save the
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attachment in a file."
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(interactive "P")
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(when (consp part-index) (setq part-index (car part-index)))
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(mh-folder-mime-action part-index #'mh-press-button t))
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;;;###mh-autoload
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(defun mh-mime-save-parts (prompt)
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"Save attachments.
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You can save all of the attachments at once with this command.
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The attachments are saved in the directory specified by the
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option `mh-mime-save-parts-default-directory' unless you use a
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prefix argument PROMPT in which case you are prompted for the
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directory. These directories may be superseded by MH profile
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components, since this function calls on \"mhstore\" (\"mhn\") to
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do the work."
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(interactive "P")
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(let ((msg (if (eq major-mode 'mh-show-mode)
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(mh-show-buffer-message-number)
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(mh-get-msg-num t)))
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(folder (if (eq major-mode 'mh-show-mode)
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mh-show-folder-buffer
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mh-current-folder))
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(command (if (mh-variant-p 'nmh) "mhstore" "mhn"))
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(directory
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(cond
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((and (or prompt
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(equal nil mh-mime-save-parts-default-directory)
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(equal t mh-mime-save-parts-default-directory))
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(not mh-mime-save-parts-directory))
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(read-directory-name "Store in directory: " nil nil t))
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((and (or prompt
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(equal t mh-mime-save-parts-default-directory))
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mh-mime-save-parts-directory)
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(read-directory-name (format
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"Store in directory (default %s): "
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mh-mime-save-parts-directory)
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"" mh-mime-save-parts-directory t ""))
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((stringp mh-mime-save-parts-default-directory)
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mh-mime-save-parts-default-directory)
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(t
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mh-mime-save-parts-directory))))
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(if (and (equal directory "") mh-mime-save-parts-directory)
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(setq directory mh-mime-save-parts-directory))
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(if (not (file-directory-p directory))
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(message "No directory specified")
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(if (equal nil mh-mime-save-parts-default-directory)
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(setq mh-mime-save-parts-directory directory))
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(with-current-buffer (get-buffer-create mh-log-buffer)
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(cd directory)
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(setq mh-mime-save-parts-directory directory)
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(let ((initial-size (mh-truncate-log-buffer)))
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(apply 'call-process
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(expand-file-name command mh-progs) nil t nil
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(mh-list-to-string (list folder msg "-auto"
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(if (not (mh-variant-p 'nmh))
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"-store"))))
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(if (> (buffer-size) initial-size)
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(save-window-excursion
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(switch-to-buffer-other-window mh-log-buffer)
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(sit-for 3))))))))
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;;;###mh-autoload
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(defun mh-toggle-mh-decode-mime-flag ()
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"Toggle the value of `mh-decode-mime-flag'."
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(interactive)
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(setq mh-decode-mime-flag (not mh-decode-mime-flag))
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(mh-show nil t)
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(message "%s" (if mh-decode-mime-flag
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"Processing attachments normally"
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"Displaying raw message")))
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;;;###mh-autoload
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(defun mh-toggle-mime-buttons ()
|
||
"Toggle option `mh-display-buttons-for-inline-parts-flag'."
|
||
(interactive)
|
||
(setq mh-display-buttons-for-inline-parts-flag
|
||
(not mh-display-buttons-for-inline-parts-flag))
|
||
(mh-show nil t))
|
||
|
||
|
||
|
||
;;; MIME Display Routines
|
||
|
||
(defun mh-mm-inline-message (handle)
|
||
"Display message, HANDLE.
|
||
The function decodes the message and displays it. It avoids
|
||
decoding the same message multiple times."
|
||
(let ((b (point))
|
||
(clean-message-header mh-clean-message-header-flag)
|
||
(invisible-headers mh-invisible-header-fields-compiled)
|
||
(visible-headers nil))
|
||
(save-excursion
|
||
(save-restriction
|
||
(narrow-to-region b b)
|
||
(mm-insert-part handle)
|
||
(mh-mime-display
|
||
(or (gethash handle (mh-mime-handles-cache (mh-buffer-data)))
|
||
(setf (gethash handle (mh-mime-handles-cache (mh-buffer-data)))
|
||
(let ((handles (mm-dissect-buffer nil)))
|
||
(if handles
|
||
(mh-mm-uu-dissect-text-parts handles)
|
||
(setq handles (mm-uu-dissect)))
|
||
(setf (mh-mime-handles (mh-buffer-data))
|
||
(mh-mm-merge-handles
|
||
handles (mh-mime-handles (mh-buffer-data))))
|
||
handles))))
|
||
|
||
(goto-char (point-min))
|
||
(mh-show-xface)
|
||
(cond (clean-message-header
|
||
(mh-clean-msg-header (point-min)
|
||
invisible-headers
|
||
visible-headers)
|
||
(goto-char (point-min)))
|
||
(t
|
||
(mh-start-of-uncleaned-message)))
|
||
(mh-decode-message-header)
|
||
(mh-show-addr)
|
||
;; The other highlighting types don't need anything special
|
||
(when (eq mh-highlight-citation-style 'gnus)
|
||
(mh-gnus-article-highlight-citation))
|
||
(goto-char (point-min))
|
||
(insert "\n------- Forwarded Message\n\n")
|
||
(mh-display-smileys)
|
||
(mh-display-emphasis)
|
||
(mm-handle-set-undisplayer
|
||
handle
|
||
`(lambda ()
|
||
(let (buffer-read-only)
|
||
(if (fboundp 'remove-specifier)
|
||
;; This is only valid on XEmacs.
|
||
(mapcar (lambda (prop)
|
||
(remove-specifier
|
||
(face-property 'default prop) (current-buffer)))
|
||
'(background background-pixmap foreground)))
|
||
(delete-region ,(point-min-marker) ,(point-max-marker)))))))))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-decode-message-header ()
|
||
"Decode RFC2047 encoded message header fields."
|
||
(when mh-decode-mime-flag
|
||
(let ((buffer-read-only nil))
|
||
(rfc2047-decode-region (point-min) (mh-mail-header-end)))))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-decode-message-subject ()
|
||
"Decode RFC2047 encoded message header fields."
|
||
(when mh-decode-mime-flag
|
||
(save-excursion
|
||
(let ((buffer-read-only nil))
|
||
(rfc2047-decode-region (progn (mh-goto-header-field "Subject:") (point))
|
||
(progn (mh-header-field-end) (point)))))))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mime-display (&optional pre-dissected-handles)
|
||
"Display (and possibly decode) MIME handles.
|
||
Optional argument, PRE-DISSECTED-HANDLES is a list of MIME
|
||
handles. If present they are displayed otherwise the buffer is
|
||
parsed and then displayed."
|
||
(let ((handles ())
|
||
(folder mh-show-folder-buffer)
|
||
(raw-message-data (buffer-string)))
|
||
(mh-flet
|
||
((mm-handle-set-external-undisplayer
|
||
(handle function)
|
||
(mh-handle-set-external-undisplayer folder handle function)))
|
||
(goto-char (point-min))
|
||
(unless (search-forward "\n\n" nil t)
|
||
(goto-char (point-max))
|
||
(insert "\n\n"))
|
||
|
||
(condition-case err
|
||
(progn
|
||
;; If needed dissect the current buffer
|
||
(if pre-dissected-handles
|
||
(setq handles pre-dissected-handles)
|
||
(if (setq handles (mm-dissect-buffer nil))
|
||
(mh-mm-uu-dissect-text-parts handles)
|
||
(setq handles (mm-uu-dissect)))
|
||
(setf (mh-mime-handles (mh-buffer-data))
|
||
(mh-mm-merge-handles handles
|
||
(mh-mime-handles (mh-buffer-data))))
|
||
(unless handles
|
||
(mh-decode-message-body)))
|
||
|
||
(cond ((and handles
|
||
(or (not (stringp (car handles)))
|
||
(cdr handles)))
|
||
;; Go to start of message body
|
||
(goto-char (point-min))
|
||
(or (search-forward "\n\n" nil t)
|
||
(goto-char (point-max)))
|
||
|
||
;; Delete the body
|
||
(delete-region (point) (point-max))
|
||
|
||
;; Display the MIME handles
|
||
(mh-mime-display-part handles))
|
||
(t
|
||
(mh-signature-highlight))))
|
||
(error
|
||
(message "Could not display body: %s" (error-message-string err))
|
||
(delete-region (point-min) (point-max))
|
||
(insert raw-message-data))))))
|
||
|
||
(defun mh-decode-message-body ()
|
||
"Decode message based on charset.
|
||
If message has been encoded for transfer take that into account."
|
||
(let (ct charset cte)
|
||
(goto-char (point-min))
|
||
(re-search-forward "\n\n" nil t)
|
||
(save-restriction
|
||
(narrow-to-region (point-min) (point))
|
||
(setq ct (ignore-errors (mail-header-parse-content-type
|
||
(message-fetch-field "Content-Type" t)))
|
||
charset (mail-content-type-get ct 'charset)
|
||
cte (message-fetch-field "Content-Transfer-Encoding")))
|
||
(when (stringp cte) (setq cte (mail-header-strip cte)))
|
||
(when (or (not ct) (equal (car ct) "text/plain"))
|
||
(save-restriction
|
||
(narrow-to-region (min (1+ (mh-mail-header-end)) (point-max))
|
||
(point-max))
|
||
(mm-decode-body charset
|
||
(and cte (intern (downcase
|
||
(gnus-strip-whitespace cte))))
|
||
(car ct))))))
|
||
|
||
(defun mh-mime-display-part (handle)
|
||
"Decides the viewer to call based on the type of HANDLE."
|
||
(cond ((null handle)
|
||
nil)
|
||
((not (stringp (car handle)))
|
||
(mh-mime-display-single handle))
|
||
((equal (car handle) "multipart/alternative")
|
||
(mh-mime-display-alternative (cdr handle)))
|
||
((and mh-pgp-support-flag
|
||
(or (equal (car handle) "multipart/signed")
|
||
(equal (car handle) "multipart/encrypted")))
|
||
(mh-mime-display-security handle))
|
||
(t
|
||
(mh-mime-display-mixed (cdr handle)))))
|
||
|
||
(defun mh-mime-display-mixed (handles)
|
||
"Display the list of MIME parts, HANDLES recursively."
|
||
(mapcar #'mh-mime-display-part handles))
|
||
|
||
(defun mh-mime-display-alternative (handles)
|
||
"Choose among the alternatives, HANDLES the part that will be displayed.
|
||
If no part is preferred then all the parts are displayed."
|
||
(let* ((preferred (mm-preferred-alternative handles))
|
||
(others (loop for x in handles unless (eq x preferred) collect x)))
|
||
(cond ((and preferred
|
||
(stringp (car preferred)))
|
||
(mh-mime-display-part preferred)
|
||
(mh-mime-maybe-display-alternatives others))
|
||
(preferred
|
||
(save-restriction
|
||
(narrow-to-region (point) (if (eobp) (point) (1+ (point))))
|
||
(mh-mime-display-single preferred)
|
||
(mh-mime-maybe-display-alternatives others)
|
||
(goto-char (point-max))))
|
||
(t
|
||
(mh-mime-display-mixed handles)))))
|
||
|
||
(defun mh-mime-maybe-display-alternatives (alternatives)
|
||
"Show buttons for ALTERNATIVES.
|
||
If `mh-mime-display-alternatives-flag' is non-nil then display
|
||
buttons for alternative parts that are usually suppressed."
|
||
(when (and mh-display-buttons-for-alternatives-flag alternatives)
|
||
(insert "\n----------------------------------------------------\n")
|
||
(insert "Alternatives:\n")
|
||
(dolist (x alternatives)
|
||
(insert "\n")
|
||
(mh-insert-mime-button x (mh-mime-part-index x) nil))
|
||
(insert "\n----------------------------------------------------\n")))
|
||
|
||
(defun mh-mime-display-security (handle)
|
||
"Display PGP encrypted/signed message, HANDLE."
|
||
(save-restriction
|
||
(narrow-to-region (point) (point))
|
||
(insert "\n")
|
||
(mh-insert-mime-security-button handle)
|
||
(mh-mime-display-mixed (cdr handle))
|
||
(insert "\n")
|
||
(let ((mh-mime-security-button-line-format
|
||
mh-mime-security-button-end-line-format))
|
||
(mh-insert-mime-security-button handle))
|
||
(mh-mm-set-handle-multipart-parameter
|
||
handle 'mh-region (cons (point-min-marker) (point-max-marker)))))
|
||
|
||
(defun mh-mime-display-single (handle)
|
||
"Display a leaf node, HANDLE in the MIME tree."
|
||
(let* ((type (mm-handle-media-type handle))
|
||
(small-image-flag (mh-small-image-p handle))
|
||
(attachmentp (equal (car (mm-handle-disposition handle))
|
||
"attachment"))
|
||
(inlinep (and (equal (car (mm-handle-disposition handle)) "inline")
|
||
(mm-inlinable-p handle)
|
||
(mm-inlined-p handle)))
|
||
(displayp (or inlinep ; show if inline OR
|
||
(mh-inline-vcard-p handle); inline vcard OR
|
||
(and (not attachmentp) ; if not an attachment
|
||
(or small-image-flag ; and small image
|
||
; and user wants inline
|
||
(and (not (equal
|
||
(mm-handle-media-supertype handle)
|
||
"image"))
|
||
(mm-inlinable-p handle)
|
||
(mm-inlined-p handle)))))))
|
||
(save-restriction
|
||
(narrow-to-region (point) (if (eobp) (point) (1+ (point))))
|
||
(cond ((and mh-pgp-support-flag
|
||
(equal type "application/pgp-signature"))
|
||
nil) ; skip signatures as they are already handled...
|
||
((not displayp)
|
||
(insert "\n")
|
||
(mh-insert-mime-button handle (mh-mime-part-index handle) nil))
|
||
((and displayp
|
||
(not mh-display-buttons-for-inline-parts-flag))
|
||
(or (mm-display-part handle)
|
||
(mm-display-part handle))
|
||
(mh-signature-highlight handle))
|
||
((and displayp
|
||
mh-display-buttons-for-inline-parts-flag)
|
||
(insert "\n")
|
||
(mh-insert-mime-button handle (mh-mime-part-index handle) nil)
|
||
(forward-line -1)
|
||
(mh-mm-display-part handle)))
|
||
(goto-char (point-max)))))
|
||
|
||
;; There is a bug in Gnus inline image display due to which an extra line
|
||
;; gets inserted every time it is viewed. To work around that problem we are
|
||
;; using an extra property 'mh-region to remember the region that is added
|
||
;; when the button is clicked. The region is then deleted to make sure that
|
||
;; no extra lines get inserted.
|
||
(defun mh-mm-display-part (handle)
|
||
"Toggle display of button for MIME part, HANDLE."
|
||
(beginning-of-line)
|
||
(let ((id (get-text-property (point) 'mh-part))
|
||
(point (point))
|
||
(window (selected-window))
|
||
(mail-parse-charset 'nil)
|
||
(mail-parse-ignored-charsets nil)
|
||
region buffer-read-only)
|
||
(save-excursion
|
||
(unwind-protect
|
||
(let ((win (get-buffer-window (current-buffer) t)))
|
||
(when win
|
||
(select-window win))
|
||
(goto-char point)
|
||
|
||
(if (mm-handle-displayed-p handle)
|
||
;; This will remove the part.
|
||
(progn
|
||
;; Delete the button and displayed part (if any)
|
||
(let ((region (get-text-property point 'mh-region)))
|
||
(when region
|
||
(mh-funcall-if-exists
|
||
remove-images (car region) (cdr region)))
|
||
(mm-display-part handle)
|
||
(when region
|
||
(delete-region (car region) (cdr region))))
|
||
;; Delete button (if it still remains). This happens for
|
||
;; externally displayed parts where the previous step does
|
||
;; nothing.
|
||
(unless (eolp)
|
||
(delete-region (point) (progn (forward-line) (point)))))
|
||
(save-restriction
|
||
(delete-region (point) (progn (forward-line 1) (point)))
|
||
(narrow-to-region (point) (point))
|
||
;; Maybe we need another unwind-protect here.
|
||
(when (equal (mm-handle-media-supertype handle) "image")
|
||
(insert "\n"))
|
||
(when (and (not (eq (ignore-errors (mm-display-part handle))
|
||
'inline))
|
||
(equal (mm-handle-media-supertype handle)
|
||
"image"))
|
||
(goto-char (point-min))
|
||
(delete-char 1))
|
||
(when (equal (mm-handle-media-supertype handle) "text")
|
||
(when (eq mh-highlight-citation-style 'gnus)
|
||
(mh-gnus-article-highlight-citation))
|
||
(mh-display-smileys)
|
||
(mh-display-emphasis)
|
||
(mh-signature-highlight handle))
|
||
(setq region (cons (progn (goto-char (point-min))
|
||
(point-marker))
|
||
(progn (goto-char (point-max))
|
||
(point-marker)))))))
|
||
(when (window-live-p window)
|
||
(select-window window))
|
||
(goto-char point)
|
||
(beginning-of-line)
|
||
(mh-insert-mime-button handle id (mm-handle-displayed-p handle))
|
||
(goto-char point)
|
||
(when region
|
||
(add-text-properties (mh-line-beginning-position)
|
||
(mh-line-end-position)
|
||
`(mh-region ,region)))))))
|
||
|
||
(defun mh-mime-part-index (handle)
|
||
"Generate the button number for MIME part, HANDLE.
|
||
Notice that a hash table is used to display the same number when
|
||
buttons need to be displayed multiple times (for instance when
|
||
nested messages are opened)."
|
||
(or (gethash handle (mh-mime-part-index-hash (mh-buffer-data)))
|
||
(setf (gethash handle (mh-mime-part-index-hash (mh-buffer-data)))
|
||
(incf (mh-mime-parts-count (mh-buffer-data))))))
|
||
|
||
(defun mh-small-image-p (handle)
|
||
"Decide whether HANDLE is a \"small\" image that can be displayed inline.
|
||
This is only useful if a Content-Disposition header is not present."
|
||
(let ((media-test (caddr (assoc (car (mm-handle-type handle))
|
||
mh-mm-inline-media-tests)))
|
||
(mm-inline-large-images t))
|
||
(and media-test
|
||
(equal (mm-handle-media-supertype handle) "image")
|
||
(funcall media-test handle) ; Since mm-inline-large-images is T,
|
||
; this only tells us if the image is
|
||
; something that emacs can display
|
||
(let* ((image (mm-get-image handle)))
|
||
(or (mh-do-in-xemacs
|
||
(and (mh-funcall-if-exists glyphp image)
|
||
(< (glyph-width image)
|
||
(or mh-max-inline-image-width (window-pixel-width)))
|
||
(< (glyph-height image)
|
||
(or mh-max-inline-image-height
|
||
(window-pixel-height)))))
|
||
(mh-do-in-gnu-emacs
|
||
(let ((size (mh-funcall-if-exists image-size image)))
|
||
(and size
|
||
(< (cdr size) (or mh-max-inline-image-height
|
||
(1- (window-height))))
|
||
(< (car size) (or mh-max-inline-image-width
|
||
(window-width)))))))))))
|
||
|
||
(defun mh-inline-vcard-p (handle)
|
||
"Decide if HANDLE is a vcard that must be displayed inline."
|
||
(let ((type (mm-handle-type handle)))
|
||
(and (or (featurep 'vcard) (fboundp 'vcard-pretty-print))
|
||
(consp type)
|
||
(equal (car type) "text/x-vcard")
|
||
(save-excursion
|
||
(save-restriction
|
||
(widen)
|
||
(goto-char (point-min))
|
||
(not (mh-signature-separator-p)))))))
|
||
|
||
(defun mh-signature-highlight (&optional handle)
|
||
"Highlight message signature in HANDLE.
|
||
The optional argument, HANDLE is a MIME handle if the function is
|
||
being used to highlight the signature in a MIME part."
|
||
(let ((regexp
|
||
(cond ((not handle) "^-- $")
|
||
((not (and (equal (mm-handle-media-supertype handle) "text")
|
||
(equal (mm-handle-media-subtype handle) "html")))
|
||
"^-- $")
|
||
((eq (mh-mm-text-html-renderer) 'lynx) "^ --$")
|
||
(t "^--$"))))
|
||
(save-excursion
|
||
(goto-char (point-max))
|
||
(when (re-search-backward regexp nil t)
|
||
(mh-do-in-gnu-emacs
|
||
(let ((ov (make-overlay (point) (point-max))))
|
||
(overlay-put ov 'face 'mh-show-signature)
|
||
(overlay-put ov 'evaporate t)))
|
||
(mh-do-in-xemacs
|
||
(set-extent-property (make-extent (point) (point-max))
|
||
'face 'mh-show-signature))))))
|
||
|
||
|
||
|
||
;;; Button Display
|
||
|
||
;; Shush compiler.
|
||
(mh-do-in-xemacs
|
||
(defvar dots)
|
||
(defvar type)
|
||
(defvar ov))
|
||
|
||
(defun mh-insert-mime-button (handle index displayed)
|
||
"Insert MIME button for HANDLE.
|
||
INDEX is the part number that will be DISPLAYED. It is also used
|
||
by commands like \"K v\" which operate on individual MIME parts."
|
||
;; The button could be displayed by a previous decode. In that case
|
||
;; undisplay it if we need a hidden button.
|
||
(when (and (mm-handle-displayed-p handle) (not displayed))
|
||
(mm-display-part handle))
|
||
(let ((name (or (mail-content-type-get (mm-handle-type handle) 'name)
|
||
(mail-content-type-get (mm-handle-disposition handle)
|
||
'filename)
|
||
(mail-content-type-get (mm-handle-type handle) 'url)
|
||
""))
|
||
(type (mm-handle-media-type handle))
|
||
(description (mail-decode-encoded-word-string
|
||
(or (mm-handle-description handle) "")))
|
||
(dots (if (or displayed (mm-handle-displayed-p handle)) " " "..."))
|
||
long-type begin end)
|
||
(if (string-match ".*/" name) (setq name (substring name (match-end 0))))
|
||
(setq long-type (concat type (and (not (equal name ""))
|
||
(concat "; " name))))
|
||
(unless (equal description "")
|
||
(setq long-type (concat " --- " long-type)))
|
||
(unless (bolp) (insert "\n"))
|
||
(setq begin (point))
|
||
(gnus-eval-format
|
||
mh-mime-button-line-format mh-mime-button-line-format-alist
|
||
`(,@(mh-gnus-local-map-property mh-mime-button-map)
|
||
mh-callback mh-mm-display-part
|
||
mh-part ,index
|
||
mh-data ,handle))
|
||
(setq end (point))
|
||
(widget-convert-button
|
||
'link begin end
|
||
:mime-handle handle
|
||
:action 'mh-widget-press-button
|
||
:button-keymap mh-mime-button-map
|
||
:help-echo
|
||
"Mouse-2 click or press RET (in show buffer) to toggle display")
|
||
(dolist (ov (mh-funcall-if-exists overlays-in begin end))
|
||
(mh-funcall-if-exists overlay-put ov 'evaporate t))))
|
||
|
||
;; Shush compiler.
|
||
(defvar mm-verify-function-alist) ; < Emacs 22
|
||
(defvar mm-decrypt-function-alist) ; < Emacs 22
|
||
(mh-do-in-xemacs
|
||
(defvar pressed-details))
|
||
|
||
(defun mh-insert-mime-security-button (handle)
|
||
"Display buttons for PGP message, HANDLE."
|
||
(let* ((protocol (mh-mm-handle-multipart-ctl-parameter handle 'protocol))
|
||
(crypto-type (or (nth 2 (assoc protocol mm-verify-function-alist))
|
||
(nth 2 (assoc protocol mm-decrypt-function-alist))
|
||
"Unknown"))
|
||
(type (concat crypto-type
|
||
(if (equal (car handle) "multipart/signed")
|
||
" Signed" " Encrypted")
|
||
" Part"))
|
||
(info (or (mh-mm-handle-multipart-ctl-parameter handle 'gnus-info)
|
||
"Undecided"))
|
||
(details (mh-mm-handle-multipart-ctl-parameter handle 'gnus-details))
|
||
pressed-details begin end face)
|
||
(setq details (if details (concat "\n" details) ""))
|
||
(setq pressed-details (if mh-mime-security-button-pressed details ""))
|
||
(setq face (mh-mime-security-button-face info))
|
||
(unless (bolp) (insert "\n"))
|
||
(setq begin (point))
|
||
(gnus-eval-format
|
||
mh-mime-security-button-line-format
|
||
mh-mime-security-button-line-format-alist
|
||
`(,@(mh-gnus-local-map-property mh-mime-security-button-map)
|
||
mh-button-pressed ,mh-mime-security-button-pressed
|
||
mh-callback mh-mime-security-press-button
|
||
mh-line-format ,mh-mime-security-button-line-format
|
||
mh-data ,handle))
|
||
(setq end (point))
|
||
(widget-convert-button 'link begin end
|
||
:mime-handle handle
|
||
:action 'mh-widget-press-button
|
||
:button-keymap mh-mime-security-button-map
|
||
:button-face face
|
||
:help-echo "Mouse-2 click or press RET (in show buffer) to see security details.")
|
||
(dolist (ov (mh-funcall-if-exists overlays-in begin end))
|
||
(mh-funcall-if-exists overlay-put ov 'evaporate t))
|
||
(when (equal info "Failed")
|
||
(let* ((type (if (equal (car handle) "multipart/signed")
|
||
"verification" "decryption"))
|
||
(warning (if (equal type "decryption")
|
||
"(passphrase may be incorrect)" "")))
|
||
(message "%s %s failed %s" crypto-type type warning)))))
|
||
|
||
(defun mh-mime-security-button-face (info)
|
||
"Return the button face to use for encrypted/signed mail based on INFO."
|
||
(cond ((string-match "OK" info) ;Decrypted mail
|
||
'mh-show-pgg-good)
|
||
((string-match "Failed" info) ;Decryption failed or signature invalid
|
||
'mh-show-pgg-bad)
|
||
((string-match "Undecided" info);Unprocessed mail
|
||
'mh-show-pgg-unknown)
|
||
((string-match "Untrusted" info);Key not trusted
|
||
'mh-show-pgg-unknown)
|
||
(t
|
||
'mh-show-pgg-good)))
|
||
|
||
|
||
|
||
;;; Button Handlers
|
||
|
||
(defun mh-folder-mime-action (part-index action include-security-flag)
|
||
"Go to PART-INDEX and carry out ACTION.
|
||
|
||
If PART-INDEX is nil then go to the next part in the buffer. The
|
||
search for the next buffer wraps around if end of buffer is reached.
|
||
If argument INCLUDE-SECURITY-FLAG is non-nil then include security
|
||
info buttons when searching for a suitable parts."
|
||
(unless mh-showing-mode
|
||
(mh-show))
|
||
(mh-in-show-buffer (mh-show-buffer)
|
||
(let ((criterion
|
||
(cond (part-index
|
||
(lambda (p)
|
||
(let ((part (get-text-property p 'mh-part)))
|
||
(and (integerp part) (= part part-index)))))
|
||
(t (lambda (p)
|
||
(if include-security-flag
|
||
(get-text-property p 'mh-data)
|
||
(integerp (get-text-property p 'mh-part)))))))
|
||
(point (point)))
|
||
(cond ((and (get-text-property point 'mh-part)
|
||
(or (null part-index)
|
||
(= (get-text-property point 'mh-part) part-index)))
|
||
(funcall action))
|
||
((and (get-text-property point 'mh-data)
|
||
include-security-flag
|
||
(null part-index))
|
||
(funcall action))
|
||
(t
|
||
(mh-goto-next-button nil criterion)
|
||
(if (= (point) point)
|
||
(message "No matching MIME part found")
|
||
(funcall action)))))))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-goto-next-button (backward-flag &optional criterion)
|
||
"Search for next button satisfying criterion.
|
||
|
||
If BACKWARD-FLAG is non-nil search backward in the buffer for a mime
|
||
button.
|
||
If CRITERION is a function or a symbol which has a function binding
|
||
then that function must return non-nil at the button we stop."
|
||
(unless (or (and (symbolp criterion) (fboundp criterion))
|
||
(functionp criterion))
|
||
(setq criterion (lambda (x) t)))
|
||
;; Move to the next button in the buffer satisfying criterion
|
||
(goto-char (or (save-excursion
|
||
(beginning-of-line)
|
||
;; Find point before current button
|
||
(let ((point-before-current-button
|
||
(save-excursion
|
||
(while (get-text-property (point) 'mh-data)
|
||
(unless (= (forward-line
|
||
(if backward-flag 1 -1))
|
||
0)
|
||
(if backward-flag
|
||
(goto-char (point-min))
|
||
(goto-char (point-max)))))
|
||
(point))))
|
||
;; Skip over current button
|
||
(while (and (get-text-property (point) 'mh-data)
|
||
(not (if backward-flag (bobp) (eobp))))
|
||
(forward-line (if backward-flag -1 1)))
|
||
;; Stop at next MIME button if any exists.
|
||
(block loop
|
||
(while (/= (progn
|
||
(unless (= (forward-line
|
||
(if backward-flag -1 1))
|
||
0)
|
||
(if backward-flag
|
||
(goto-char (point-max))
|
||
(goto-char (point-min)))
|
||
(beginning-of-line))
|
||
(point))
|
||
point-before-current-button)
|
||
(when (and (get-text-property (point) 'mh-data)
|
||
(funcall criterion (point)))
|
||
(return-from loop (point))))
|
||
nil)))
|
||
(point))))
|
||
|
||
(defun mh-widget-press-button (widget el)
|
||
"Callback for widget, WIDGET.
|
||
Parameter EL is unused."
|
||
(goto-char (widget-get widget :from))
|
||
(mh-press-button))
|
||
|
||
(defun mh-press-button ()
|
||
"View contents of button.
|
||
|
||
This command is a toggle so if you use it again on the same
|
||
attachment, the attachment is hidden."
|
||
(interactive)
|
||
(let ((mm-inline-media-tests mh-mm-inline-media-tests)
|
||
(data (get-text-property (point) 'mh-data))
|
||
(function (get-text-property (point) 'mh-callback))
|
||
(buffer-read-only nil)
|
||
(folder mh-show-folder-buffer))
|
||
(mh-flet
|
||
((mm-handle-set-external-undisplayer
|
||
(handle function)
|
||
(mh-handle-set-external-undisplayer folder handle function)))
|
||
(when (and function (eolp))
|
||
(backward-char))
|
||
(unwind-protect (and function (funcall function data))
|
||
(set-buffer-modified-p nil)))))
|
||
|
||
(defun mh-push-button (event)
|
||
"Click MIME button for EVENT.
|
||
|
||
If the MIME part is visible then it is removed. Otherwise the
|
||
part is displayed. This function is called when the mouse is used
|
||
to click the MIME button."
|
||
(interactive "e")
|
||
(mh-do-at-event-location event
|
||
(let ((folder mh-show-folder-buffer)
|
||
(mm-inline-media-tests mh-mm-inline-media-tests)
|
||
(data (get-text-property (point) 'mh-data))
|
||
(function (get-text-property (point) 'mh-callback)))
|
||
(mh-flet
|
||
((mm-handle-set-external-undisplayer
|
||
(handle func)
|
||
(mh-handle-set-external-undisplayer folder handle func)))
|
||
(and function (funcall function data))))))
|
||
|
||
(defun mh-handle-set-external-undisplayer (folder handle function)
|
||
"Replacement for `mm-handle-set-external-undisplayer'.
|
||
|
||
This is only called in recent versions of Gnus. The MIME handles
|
||
are stored in data structures corresponding to MH-E folder buffer
|
||
FOLDER instead of in Gnus (as in the original). The MIME part,
|
||
HANDLE is associated with the undisplayer FUNCTION."
|
||
(if (mh-mm-keep-viewer-alive-p handle)
|
||
(let ((new-handle (copy-sequence handle)))
|
||
(mm-handle-set-undisplayer new-handle function)
|
||
(mm-handle-set-undisplayer handle nil)
|
||
(with-current-buffer folder
|
||
(push new-handle (mh-mime-handles (mh-buffer-data)))))
|
||
(mm-handle-set-undisplayer handle function)))
|
||
|
||
(defun mh-mime-security-press-button (handle)
|
||
"Callback from security button for part HANDLE."
|
||
(if (mh-mm-handle-multipart-ctl-parameter handle 'gnus-info)
|
||
(mh-mime-security-show-details handle)
|
||
(let ((region (mh-mm-handle-multipart-ctl-parameter handle 'mh-region))
|
||
point)
|
||
(setq point (point))
|
||
(goto-char (car region))
|
||
(delete-region (car region) (cdr region))
|
||
(with-current-buffer (mh-mm-handle-multipart-ctl-parameter handle 'buffer)
|
||
(let* ((mm-verify-option 'known)
|
||
(mm-decrypt-option 'known)
|
||
(new (mh-mm-possibly-verify-or-decrypt (cdr handle) handle)))
|
||
(unless (eq new (cdr handle))
|
||
(mh-mm-destroy-parts (cdr handle))
|
||
(setcdr handle new))))
|
||
(mh-mime-display-security handle)
|
||
(goto-char point))))
|
||
|
||
;; I rewrote the security part because Gnus doesn't seem to ever minimize
|
||
;; the button. That is once the mime-security button is pressed there seems
|
||
;; to be no way of getting rid of the inserted text.
|
||
(defun mh-mime-security-show-details (handle)
|
||
"Toggle display of detailed security info for HANDLE."
|
||
(let ((details (mh-mm-handle-multipart-ctl-parameter handle 'gnus-details)))
|
||
(when details
|
||
(let ((mh-mime-security-button-pressed
|
||
(not (get-text-property (point) 'mh-button-pressed)))
|
||
(mh-mime-security-button-line-format
|
||
(get-text-property (point) 'mh-line-format)))
|
||
(forward-char -1)
|
||
(while (eq (get-text-property (point) 'mh-line-format)
|
||
mh-mime-security-button-line-format)
|
||
(forward-char -1))
|
||
(forward-char)
|
||
(save-restriction
|
||
(narrow-to-region (point) (point))
|
||
(mh-insert-mime-security-button handle))
|
||
(delete-region
|
||
(point)
|
||
(or (text-property-not-all
|
||
(point) (point-max)
|
||
'mh-line-format mh-mime-security-button-line-format)
|
||
(point-max)))
|
||
(forward-line -1)))))
|
||
|
||
|
||
|
||
;;; Miscellaneous Article Washing
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-add-missing-mime-version-header ()
|
||
"Some mail programs don't put a MIME-Version header.
|
||
I have seen this only in spam, so maybe we shouldn't fix
|
||
this ;-)"
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(re-search-forward "\n\n" nil t)
|
||
(save-restriction
|
||
(narrow-to-region (point-min) (point))
|
||
(when (and (message-fetch-field "content-type")
|
||
(not (message-fetch-field "mime-version")))
|
||
(goto-char (point-min))
|
||
(insert "MIME-Version: 1.0\n")))))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-display-smileys ()
|
||
"Display smileys."
|
||
(when (and mh-graphical-smileys-flag (mh-small-show-buffer-p))
|
||
(mh-funcall-if-exists smiley-region (point-min) (point-max))))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-display-emphasis ()
|
||
"Display graphical emphasis."
|
||
(when (and mh-graphical-emphasis-flag (mh-small-show-buffer-p))
|
||
(mh-flet
|
||
((article-goto-body ())) ; shadow this function to do nothing
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(article-emphasize)))))
|
||
|
||
(defun mh-small-show-buffer-p ()
|
||
"Check if show buffer is small.
|
||
This is used to decide if smileys and graphical emphasis should be
|
||
displayed."
|
||
(let ((max nil))
|
||
(when (and (boundp 'font-lock-maximum-size) font-lock-maximum-size)
|
||
(cond ((numberp font-lock-maximum-size)
|
||
(setq max font-lock-maximum-size))
|
||
((listp font-lock-maximum-size)
|
||
(setq max (cdr (or (assoc 'mh-show-mode font-lock-maximum-size)
|
||
(assoc t font-lock-maximum-size)))))))
|
||
(or (not (numberp max)) (>= (/ max 8) (buffer-size)))))
|
||
|
||
|
||
|
||
;;; MH-Letter Commands
|
||
|
||
;; MH-E commands are alphabetical; specific support routines follow command.
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-compose-forward (&optional description folder range)
|
||
"Add tag to forward a message.
|
||
|
||
You are prompted for a content DESCRIPTION, the name of the
|
||
FOLDER in which the messages to forward are located, and a RANGE
|
||
of messages, which defaults to the current message in that
|
||
folder. Check the documentation of `mh-interactive-range' to see
|
||
how RANGE is read in interactive use.
|
||
|
||
The option `mh-compose-insertion' controls what type of tags are inserted."
|
||
(interactive
|
||
(let* ((description
|
||
(mml-minibuffer-read-description))
|
||
(folder
|
||
(mh-prompt-for-folder "Message from"
|
||
mh-sent-from-folder nil))
|
||
(default
|
||
(if (and (equal folder mh-sent-from-folder)
|
||
(numberp mh-sent-from-msg))
|
||
mh-sent-from-msg
|
||
(nth 0 (mh-translate-range folder "cur"))))
|
||
(range
|
||
(mh-read-range "Forward" folder
|
||
(or (and default
|
||
(number-to-string default))
|
||
t)
|
||
t t)))
|
||
(list description folder range)))
|
||
(let ((messages (mapconcat 'identity (mh-list-to-string range) " ")))
|
||
(dolist (message (mh-translate-range folder messages))
|
||
(if (equal mh-compose-insertion 'mml)
|
||
(mh-mml-forward-message description folder (format "%s" message))
|
||
(mh-mh-forward-message description folder (format "%s" message))))))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mml-forward-message (description folder message)
|
||
"Forward a message as attachment.
|
||
|
||
The function will prompt the user for a DESCRIPTION, a FOLDER and
|
||
MESSAGE number."
|
||
(let ((msg (if (and (equal message "") (numberp mh-sent-from-msg))
|
||
mh-sent-from-msg
|
||
(string-to-number message))))
|
||
(cond ((integerp msg)
|
||
(mml-attach-file (format "%s%s/%d"
|
||
mh-user-path (substring folder 1) msg)
|
||
"message/rfc822"
|
||
(if (string= "" description) nil description)
|
||
"inline"))
|
||
(t (error "The message number, %s, is not a integer" msg)))))
|
||
|
||
(defun mh-mh-forward-message (&optional description folder messages)
|
||
"Add tag to forward a message.
|
||
You are prompted for a content DESCRIPTION, the name of the
|
||
FOLDER in which the messages to forward are located, and the
|
||
MESSAGES' numbers.
|
||
|
||
See also \\[mh-mh-to-mime]."
|
||
(interactive (list
|
||
(mml-minibuffer-read-description)
|
||
(mh-prompt-for-folder "Message from" mh-sent-from-folder nil)
|
||
(read-string (concat "Messages"
|
||
(if (numberp mh-sent-from-msg)
|
||
(format " (default %d): "
|
||
mh-sent-from-msg)
|
||
": ")))))
|
||
(beginning-of-line)
|
||
(insert "#forw [")
|
||
(and description
|
||
(not (string= description ""))
|
||
(insert description))
|
||
(insert "]")
|
||
(and folder
|
||
(not (string= folder ""))
|
||
(insert " " folder))
|
||
(if (and messages
|
||
(not (string= messages "")))
|
||
(let ((start (point)))
|
||
(insert " " messages)
|
||
(subst-char-in-region start (point) ?, ? ))
|
||
(if (numberp mh-sent-from-msg)
|
||
(insert " " (int-to-string mh-sent-from-msg))))
|
||
(insert "\n"))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-compose-insertion (&optional inline)
|
||
"Add tag to include a file such as an image or sound.
|
||
|
||
You are prompted for the filename containing the object, the
|
||
media type if it cannot be determined automatically, and a
|
||
content description. If you're using MH-style directives, you
|
||
will also be prompted for additional attributes.
|
||
|
||
The option `mh-compose-insertion' controls what type of tags are
|
||
inserted. Optional argument INLINE means make it an inline
|
||
attachment."
|
||
(interactive "P")
|
||
(if (equal mh-compose-insertion 'mml)
|
||
(if inline
|
||
(mh-mml-attach-file "inline")
|
||
(mh-mml-attach-file))
|
||
(call-interactively 'mh-mh-attach-file)))
|
||
|
||
(defun mh-mml-attach-file (&optional disposition)
|
||
"Add a tag to insert a MIME message part from a file.
|
||
|
||
You are prompted for the filename containing the object, the
|
||
media type if it cannot be determined automatically, a content
|
||
description and the DISPOSITION of the attachment.
|
||
|
||
This is basically `mml-attach-file' from Gnus, modified such that a prefix
|
||
argument yields an \"inline\" disposition and Content-Type is determined
|
||
automatically."
|
||
(let* ((file (mml-minibuffer-read-file "Attach file: "))
|
||
(type (mh-minibuffer-read-type file))
|
||
(description (mml-minibuffer-read-description))
|
||
(dispos (or disposition
|
||
(mh-mml-minibuffer-read-disposition type))))
|
||
(mml-insert-empty-tag 'part 'type type 'filename file
|
||
'disposition dispos 'description description)))
|
||
|
||
(defun mh-mh-attach-file (filename type description attributes)
|
||
"Add a tag to insert a MIME message part from a file.
|
||
You are prompted for the FILENAME containing the object, the
|
||
media TYPE if it cannot be determined automatically, and a
|
||
content DESCRIPTION. In addition, you are also prompted for
|
||
additional ATTRIBUTES.
|
||
|
||
See also \\[mh-mh-to-mime]."
|
||
(interactive (let ((filename (mml-minibuffer-read-file "Attach file: ")))
|
||
(list
|
||
filename
|
||
(mh-minibuffer-read-type filename)
|
||
(mml-minibuffer-read-description)
|
||
(read-string "Attributes: "
|
||
(concat "name=\""
|
||
(file-name-nondirectory filename)
|
||
"\"")))))
|
||
(mh-mh-compose-type filename type description attributes))
|
||
|
||
(defun mh-mh-compose-type (filename type
|
||
&optional description attributes comment)
|
||
"Insert an MH-style directive to insert a file.
|
||
The file specified by FILENAME is encoded as TYPE. An optional
|
||
DESCRIPTION is used as the Content-Description field, optional
|
||
set of ATTRIBUTES and an optional COMMENT can also be included."
|
||
(beginning-of-line)
|
||
(insert "#" type)
|
||
(and attributes
|
||
(insert "; " attributes))
|
||
(and comment
|
||
(insert " (" comment ")"))
|
||
(insert " [")
|
||
(and description
|
||
(insert description))
|
||
(insert "] " (expand-file-name filename))
|
||
(insert "\n"))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mh-compose-anon-ftp (host filename type description)
|
||
"Add tag to include anonymous ftp reference to a file.
|
||
|
||
You can have your message initiate an \"ftp\" transfer when the
|
||
recipient reads the message. You are prompted for the remote HOST
|
||
and FILENAME, the media TYPE, and the content DESCRIPTION.
|
||
|
||
See also \\[mh-mh-to-mime]."
|
||
(interactive (list
|
||
(read-string "Remote host: ")
|
||
(read-string "Remote filename: ")
|
||
(mh-minibuffer-read-type "DUMMY-FILENAME")
|
||
(mml-minibuffer-read-description)))
|
||
(mh-mh-compose-external-type "anon-ftp" host filename
|
||
type description))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mh-compose-external-compressed-tar (host filename description)
|
||
"Add tag to include anonymous ftp reference to a compressed tar file.
|
||
|
||
In addition to retrieving the file via anonymous \"ftp\" as per
|
||
the command \\[mh-mh-compose-anon-ftp], the file will also be
|
||
uncompressed and untarred. You are prompted for the remote HOST
|
||
and FILENAME and the content DESCRIPTION.
|
||
|
||
See also \\[mh-mh-to-mime]."
|
||
(interactive (list
|
||
(read-string "Remote host: ")
|
||
(read-string "Remote filename: ")
|
||
(mml-minibuffer-read-description)))
|
||
(mh-mh-compose-external-type "anon-ftp" host filename
|
||
"application/octet-stream"
|
||
description
|
||
"type=tar; conversions=x-compress"
|
||
"mode=image"))
|
||
|
||
;; RFC 2045 - Multipurpose Internet Mail Extensions (MIME) Part One:
|
||
;; Format of Internet Message Bodies.
|
||
;; RFC 2046 - Multipurpose Internet Mail Extensions (MIME) Part Two:
|
||
;; Media Types.
|
||
;; RFC 2049 - Multipurpose Internet Mail Extensions (MIME) Part Five:
|
||
;; Conformance Criteria and Examples.
|
||
;; RFC 2017 - Definition of the URL MIME External-Body Access-Type
|
||
;; RFC 1738 - Uniform Resource Locators (URL)
|
||
(defvar mh-access-types
|
||
'(("anon-ftp") ; RFC2046 Anonymous File Transfer Protocol
|
||
("file") ; RFC1738 Host-specific file names
|
||
("ftp") ; RFC2046 File Transfer Protocol
|
||
("gopher") ; RFC1738 The Gopher Protocol
|
||
("http") ; RFC1738 Hypertext Transfer Protocol
|
||
("local-file") ; RFC2046 Local file access
|
||
("mail-server") ; RFC2046 mail-server Electronic mail address
|
||
("mailto") ; RFC1738 Electronic mail address
|
||
("news") ; RFC1738 Usenet news
|
||
("nntp") ; RFC1738 Usenet news using NNTP access
|
||
("prospero") ; RFC1738 Prospero Directory Service
|
||
("telnet") ; RFC1738 Telnet
|
||
("tftp") ; RFC2046 Trivial File Transfer Protocol
|
||
("url") ; RFC2017 URL scheme MIME access-type Protocol
|
||
("wais")) ; RFC1738 Wide Area Information Servers
|
||
"Valid MIME access-type values.")
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mh-compose-external-type (access-type host filename type
|
||
&optional description
|
||
attributes parameters
|
||
comment)
|
||
"Add tag to refer to a remote file.
|
||
|
||
This command is a general utility for referencing external files.
|
||
In fact, all of the other commands that insert directives to
|
||
access external files call this command. You are prompted for the
|
||
ACCESS-TYPE, remote HOST and FILENAME, and content TYPE. If you
|
||
provide a prefix argument, you are also prompted for a content
|
||
DESCRIPTION, ATTRIBUTES, PARAMETERS, and a COMMENT.
|
||
|
||
See also \\[mh-mh-to-mime]."
|
||
(interactive (list
|
||
(completing-read "Access type: " mh-access-types)
|
||
(read-string "Remote host: ")
|
||
(read-string "Remote filename: ")
|
||
(mh-minibuffer-read-type "DUMMY-FILENAME")
|
||
(if current-prefix-arg (mml-minibuffer-read-description))
|
||
(if current-prefix-arg (read-string "Attributes: "))
|
||
(if current-prefix-arg (read-string "Parameters: "))
|
||
(if current-prefix-arg (read-string "Comment: "))))
|
||
(beginning-of-line)
|
||
(insert "#@" type)
|
||
(and attributes
|
||
(insert "; " attributes))
|
||
(and comment
|
||
(insert " (" comment ") "))
|
||
(insert " [")
|
||
(and description
|
||
(insert description))
|
||
(insert "] ")
|
||
(insert "access-type=" access-type "; ")
|
||
(insert "site=" host)
|
||
(insert "; name=" (file-name-nondirectory filename))
|
||
(let ((directory (file-name-directory filename)))
|
||
(and directory
|
||
(insert "; directory=\"" directory "\"")))
|
||
(and parameters
|
||
(insert "; " parameters))
|
||
(insert "\n"))
|
||
|
||
(defvar mh-mh-to-mime-args nil
|
||
"Extra arguments for \\[mh-mh-to-mime] to pass to the \"mhbuild\" command.
|
||
The arguments are passed to \"mhbuild\" if \\[mh-mh-to-mime] is
|
||
given a prefix argument. Normally default arguments to
|
||
\"mhbuild\" are specified in the MH profile.")
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mh-to-mime (&optional extra-args)
|
||
"Compose MIME message from MH-style directives.
|
||
|
||
Typically, you send a message with attachments just like any other
|
||
message. However, you may take a sneak preview of the MIME encoding if
|
||
you wish by running this command.
|
||
|
||
If you wish to pass additional arguments to \"mhbuild\" (\"mhn\")
|
||
to affect how it builds your message, use the option
|
||
`mh-mh-to-mime-args'. For example, you can build a consistency
|
||
check into the message by setting `mh-mh-to-mime-args' to
|
||
\"-check\". The recipient of your message can then run \"mhbuild
|
||
-check\" on the message--\"mhbuild\" (\"mhn\") will complain if
|
||
the message has been corrupted on the way. This command only
|
||
consults this option when given a prefix argument EXTRA-ARGS.
|
||
|
||
The hook `mh-mh-to-mime-hook' is called after the message has been
|
||
formatted.
|
||
|
||
The effects of this command can be undone by running
|
||
\\[mh-mh-to-mime-undo]."
|
||
(interactive "*P")
|
||
(mh-mh-quote-unescaped-sharp)
|
||
(save-buffer)
|
||
(message "Running %s..." (if (mh-variant-p 'nmh) "mhbuild" "mhn"))
|
||
(cond
|
||
((mh-variant-p 'nmh)
|
||
(mh-exec-cmd-error nil
|
||
"mhbuild"
|
||
(if extra-args mh-mh-to-mime-args)
|
||
buffer-file-name))
|
||
(t
|
||
(mh-exec-cmd-error (format "mhdraft=%s" buffer-file-name)
|
||
"mhn"
|
||
(if extra-args mh-mh-to-mime-args)
|
||
buffer-file-name)))
|
||
(revert-buffer t t t)
|
||
(message "Running %s...done" (if (mh-variant-p 'nmh) "mhbuild" "mhn"))
|
||
(run-hooks 'mh-mh-to-mime-hook))
|
||
|
||
(defun mh-mh-quote-unescaped-sharp ()
|
||
"Quote \"#\" characters that haven't been quoted for \"mhbuild\".
|
||
If the \"#\" character is present in the first column, but it isn't
|
||
part of a MH-style directive then \"mhbuild\" gives an error.
|
||
This function will quote all such characters."
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(while (re-search-forward "^#" nil t)
|
||
(beginning-of-line)
|
||
(unless (mh-mh-directive-present-p (point) (mh-line-end-position))
|
||
(insert "#"))
|
||
(goto-char (mh-line-end-position)))))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mh-to-mime-undo (noconfirm)
|
||
"Undo effects of \\[mh-mh-to-mime].
|
||
|
||
It does this by reverting to a backup file. You are prompted to
|
||
confirm this action, but you can avoid the confirmation by adding
|
||
a prefix argument NOCONFIRM."
|
||
(interactive "*P")
|
||
(if (null buffer-file-name)
|
||
(error "Buffer does not seem to be associated with any file"))
|
||
(let ((backup-strings '("," "#"))
|
||
backup-file)
|
||
(while (and backup-strings
|
||
(not (file-exists-p
|
||
(setq backup-file
|
||
(concat (file-name-directory buffer-file-name)
|
||
(car backup-strings)
|
||
(file-name-nondirectory buffer-file-name)
|
||
".orig")))))
|
||
(setq backup-strings (cdr backup-strings)))
|
||
(or backup-strings
|
||
(error "Backup file for %s no longer exists" buffer-file-name))
|
||
(or noconfirm
|
||
(yes-or-no-p (format "Revert buffer from file %s? "
|
||
backup-file))
|
||
(error "Revert not confirmed"))
|
||
(let ((buffer-read-only nil))
|
||
(erase-buffer)
|
||
(insert-file-contents backup-file))
|
||
(after-find-file nil nil nil nil t)))
|
||
|
||
;; Shush compiler.
|
||
(defvar mh-identity-pgg-default-user-id)
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mml-secure-message-encrypt (method)
|
||
"Add tag to encrypt the message.
|
||
|
||
A proper multipart message is created for you when you send the
|
||
message. Use the command \\[mh-mml-unsecure-message] to remove
|
||
this tag. Use a prefix argument METHOD to be prompted for one of
|
||
the possible security methods (see `mh-mml-method-default')."
|
||
(interactive (list (mh-mml-query-cryptographic-method)))
|
||
(mh-secure-message method "encrypt" mh-identity-pgg-default-user-id))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mml-secure-message-sign (method)
|
||
"Add tag to sign the message.
|
||
|
||
A proper multipart message is created for you when you send the
|
||
message. Use the command \\[mh-mml-unsecure-message] to remove
|
||
this tag. Use a prefix argument METHOD to be prompted for one of
|
||
the possible security methods (see `mh-mml-method-default')."
|
||
(interactive (list (mh-mml-query-cryptographic-method)))
|
||
(mh-secure-message method "sign" mh-identity-pgg-default-user-id))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mml-secure-message-signencrypt (method)
|
||
"Add tag to encrypt and sign the message.
|
||
|
||
A proper multipart message is created for you when you send the
|
||
message. Use the command \\[mh-mml-unsecure-message] to remove
|
||
this tag. Use a prefix argument METHOD to be prompted for one of
|
||
the possible security methods (see `mh-mml-method-default')."
|
||
(interactive (list (mh-mml-query-cryptographic-method)))
|
||
(mh-secure-message method "signencrypt" mh-identity-pgg-default-user-id))
|
||
|
||
(defvar mh-mml-cryptographic-method-history ())
|
||
|
||
(defun mh-mml-query-cryptographic-method ()
|
||
"Read the cryptographic method to use."
|
||
(if current-prefix-arg
|
||
(let ((def (or (car mh-mml-cryptographic-method-history)
|
||
mh-mml-method-default)))
|
||
(completing-read (format "Method (default %s): " def)
|
||
'(("pgp") ("pgpmime") ("smime"))
|
||
nil t nil 'mh-mml-cryptographic-method-history def))
|
||
mh-mml-method-default))
|
||
|
||
(defun mh-secure-message (method mode &optional identity)
|
||
"Add tag to encrypt or sign message.
|
||
|
||
METHOD should be one of: \"pgpmime\", \"pgp\", \"smime\".
|
||
MODE should be one of: \"sign\", \"encrypt\", \"signencrypt\", \"none\".
|
||
IDENTITY is optionally the default-user-id to use."
|
||
(if (not mh-pgp-support-flag)
|
||
(error "Your version of Gnus does not support PGP/GPG")
|
||
;; Check the arguments
|
||
(let ((valid-methods (list "pgpmime" "pgp" "smime"))
|
||
(valid-modes (list "sign" "encrypt" "signencrypt" "none")))
|
||
(if (not (member method valid-methods))
|
||
(error "Method %s is invalid" method))
|
||
(if (not (member mode valid-modes))
|
||
(error "Mode %s is invalid" mode))
|
||
(mml-unsecure-message)
|
||
(if (not (string= mode "none"))
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(mh-goto-header-end 1)
|
||
(if mh-identity-pgg-default-user-id
|
||
(mml-insert-tag 'secure 'method method 'mode mode
|
||
'sender mh-identity-pgg-default-user-id)
|
||
(mml-insert-tag 'secure 'method method 'mode mode)))))))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mml-to-mime ()
|
||
"Compose MIME message from MML tags.
|
||
|
||
Typically, you send a message with attachments just like any
|
||
other message. However, you may take a sneak preview of the MIME
|
||
encoding if you wish by running this command.
|
||
|
||
This action can be undone by running \\[undo]."
|
||
(interactive)
|
||
(require 'message)
|
||
(when mh-pgp-support-flag
|
||
;; PGP requires actual e-mail addresses, not aliases.
|
||
;; Parse the recipients and sender from the message.
|
||
(message-options-set-recipient)
|
||
;; Do an alias lookup on sender (if From field is present).
|
||
(when (message-options-get 'message-sender)
|
||
(message-options-set 'message-sender
|
||
(mail-strip-quoted-names
|
||
(mh-alias-expand
|
||
(message-options-get 'message-sender)))))
|
||
;; Do an alias lookup on recipients
|
||
(message-options-set 'message-recipients
|
||
(mapconcat
|
||
(lambda (ali)
|
||
(mail-strip-quoted-names (mh-alias-expand ali)))
|
||
(split-string (message-options-get 'message-recipients) "[, ]+")
|
||
", ")))
|
||
(let ((saved-text (buffer-string))
|
||
(buffer (current-buffer))
|
||
(modified-flag (buffer-modified-p)))
|
||
(condition-case err (mml-to-mime)
|
||
(error
|
||
(with-current-buffer buffer
|
||
(delete-region (point-min) (point-max))
|
||
(insert saved-text)
|
||
(set-buffer-modified-p modified-flag))
|
||
(error (error-message-string err))))))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mml-unsecure-message ()
|
||
"Remove any secure message tags."
|
||
(interactive)
|
||
(if (not mh-pgp-support-flag)
|
||
(error "Your version of Gnus does not support PGP/GPG")
|
||
(mml-unsecure-message)))
|
||
|
||
|
||
|
||
;;; Support Routines for MH-Letter Commands
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mml-tag-present-p ()
|
||
"Check if the current buffer has text which may be a MML tag."
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(re-search-forward
|
||
(concat
|
||
"\\(<#\\(mml\\|part\\)\\(.\\|\n\\)*>[ \n\t]*<#/\\(mml\\|part\\)>\\|"
|
||
"^<#secure.+>$\\)")
|
||
nil t)))
|
||
|
||
(defvar mh-media-type-regexp
|
||
(concat (regexp-opt '("text" "image" "audio" "video" "application"
|
||
"multipart" "message") t)
|
||
"/[-.+a-zA-Z0-9]+")
|
||
"Regexp matching valid media types used in MIME attachment compositions.")
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mh-directive-present-p (&optional begin end)
|
||
"Check if the text between BEGIN and END might be a MH-style directive.
|
||
The optional argument BEGIN defaults to the beginning of the
|
||
buffer, while END defaults to the end of the buffer."
|
||
(unless begin (setq begin (point-min)))
|
||
(unless end (setq end (point-max)))
|
||
(save-excursion
|
||
(block search-for-mh-directive
|
||
(goto-char begin)
|
||
(while (re-search-forward "^#" end t)
|
||
(let ((s (buffer-substring-no-properties
|
||
(point) (mh-line-end-position))))
|
||
(cond ((equal s ""))
|
||
((string-match "^forw[ \t\n]+" s)
|
||
(return-from search-for-mh-directive t))
|
||
(t (let ((first-token (car (split-string s "[ \t;@]"))))
|
||
(when (and first-token
|
||
(string-match mh-media-type-regexp
|
||
first-token))
|
||
(return-from search-for-mh-directive t)))))))
|
||
nil)))
|
||
|
||
(defun mh-minibuffer-read-type (filename &optional default)
|
||
"Return the content type associated with the given FILENAME.
|
||
If the \"file\" command exists and recognizes the given file,
|
||
then its value is returned; otherwise, the user is prompted for
|
||
a type (see `mailcap-mime-types').
|
||
Optional argument DEFAULT is returned if a type isn't entered."
|
||
(mailcap-parse-mimetypes)
|
||
(let* ((default (or default
|
||
(mm-default-file-encoding filename)
|
||
"application/octet-stream"))
|
||
(probed-type (mh-file-mime-type filename))
|
||
(type (or (and (not (equal probed-type "application/octet-stream"))
|
||
probed-type)
|
||
(completing-read
|
||
(format "Content type (default %s): " default)
|
||
(mapcar 'list (mailcap-mime-types))))))
|
||
(if (not (equal type ""))
|
||
type
|
||
default)))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-file-mime-type (filename)
|
||
"Return MIME type of FILENAME from file command.
|
||
Returns nil if file command not on system."
|
||
(cond
|
||
((not (mh-have-file-command))
|
||
nil) ;no file command, exit now
|
||
((not (and (file-exists-p filename)
|
||
(file-readable-p filename)))
|
||
nil) ;no file or not readable, ditto
|
||
(t
|
||
(let ((tmp-buffer (get-buffer-create mh-temp-buffer)))
|
||
(with-current-buffer tmp-buffer
|
||
(unwind-protect
|
||
(progn
|
||
(call-process "file" nil '(t nil) nil "-b" "-i"
|
||
(expand-file-name filename))
|
||
(goto-char (point-min))
|
||
(if (not (re-search-forward mh-media-type-regexp nil t))
|
||
nil
|
||
(mh-file-mime-type-substitute (match-string 0) filename)))
|
||
(kill-buffer tmp-buffer)))))))
|
||
|
||
(defvar mh-file-mime-type-substitutions
|
||
'(("application/msword" "\\.xls" "application/ms-excel")
|
||
("application/msword" "\\.ppt" "application/ms-powerpoint")
|
||
("text/plain" "\\.vcf" "text/x-vcard")
|
||
("text/rtf" "\\.rtf" "application/rtf")
|
||
("application/x-zip" "\\.sxc" "application/vnd.sun.xml.calc")
|
||
("application/x-zip" "\\.sxd" "application/vnd.sun.xml.draw")
|
||
("application/x-zip" "\\.sxi" "application/vnd.sun.xml.impress")
|
||
("application/x-zip" "\\.sxw" "application/vnd.sun.xml.writer")
|
||
("application/x-zip" "\\.odg" "application/vnd.oasis.opendocument.graphics")
|
||
("application/x-zip" "\\.odi" "application/vnd.oasis.opendocument.image")
|
||
("application/x-zip" "\\.odp"
|
||
"application/vnd.oasis.opendocument.presentation")
|
||
("application/x-zip" "\\.ods"
|
||
"application/vnd.oasis.opendocument.spreadsheet")
|
||
("application/x-zip" "\\.odt" "application/vnd.oasis.opendocument.text"))
|
||
"Substitutions to make for Content-Type returned from file command.
|
||
The first element is the Content-Type returned by the file command.
|
||
The second element is a regexp matching the file name, usually the
|
||
extension.
|
||
The third element is the Content-Type to replace with.")
|
||
|
||
(defun mh-file-mime-type-substitute (content-type filename)
|
||
"Return possibly changed CONTENT-TYPE on the FILENAME.
|
||
Substitutions are made from the `mh-file-mime-type-substitutions'
|
||
variable."
|
||
(let ((subst mh-file-mime-type-substitutions)
|
||
(type) (match) (answer content-type)
|
||
(case-fold-search t))
|
||
(while subst
|
||
(setq type (car (car subst))
|
||
match (elt (car subst) 1))
|
||
(if (and (string-equal content-type type)
|
||
(string-match match filename))
|
||
(setq answer (elt (car subst) 2)
|
||
subst nil)
|
||
(setq subst (cdr subst))))
|
||
answer))
|
||
|
||
(defvar mh-have-file-command 'undefined
|
||
"Cached value of function `mh-have-file-command'.
|
||
Do not reference this variable directly as it might not have been
|
||
initialized. Always use the command `mh-have-file-command'.")
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-have-file-command ()
|
||
"Return t if `file' command is on the system.
|
||
'file -i' is used to get MIME type of composition insertion."
|
||
(when (eq mh-have-file-command 'undefined)
|
||
(setq mh-have-file-command
|
||
(and (fboundp 'executable-find)
|
||
(executable-find "file") ; file command exists
|
||
; and accepts -i and -b args.
|
||
(zerop (call-process "file" nil nil nil "-i" "-b"
|
||
(expand-file-name "inc" mh-progs))))))
|
||
mh-have-file-command)
|
||
|
||
|
||
|
||
;;; MIME Cleanup
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-mime-cleanup ()
|
||
"Free the decoded MIME parts."
|
||
(let ((mime-data (gethash (current-buffer) mh-globals-hash)))
|
||
;; This is for Emacs, what about XEmacs?
|
||
(mh-funcall-if-exists remove-images (point-min) (point-max))
|
||
(when mime-data
|
||
(mh-mm-destroy-parts (mh-mime-handles mime-data))
|
||
(remhash (current-buffer) mh-globals-hash))))
|
||
|
||
;;;###mh-autoload
|
||
(defun mh-destroy-postponed-handles ()
|
||
"Free MIME data for externally displayed MIME parts."
|
||
(let ((mime-data (mh-buffer-data)))
|
||
(when mime-data
|
||
(mh-mm-destroy-parts (mh-mime-handles mime-data)))
|
||
(remhash (current-buffer) mh-globals-hash)))
|
||
|
||
(provide 'mh-mime)
|
||
|
||
;; Local Variables:
|
||
;; indent-tabs-mode: nil
|
||
;; sentence-end-double-space: nil
|
||
;; End:
|
||
|
||
;;; mh-mime.el ends here
|