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;;; mh-gnus.el --- make MH-E compatible with various versions of Gnus
;; Copyright (C) 2003-2004, 2006-2021 Free Software Foundation, Inc.
;; Author: Satyaki Das <satyaki@theforce.stanford.edu>
;; Maintainer: Bill Wohler <wohler@newt.com>
;; Keywords: mail
;; See: mh-e.el
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;; Change Log:
;;; Code:
(require 'mh-e)
(eval-and-compile
(mh-require 'gnus-util nil t)
(mh-require 'mm-bodies nil t)
(mh-require 'mm-decode nil t)
(mh-require 'mm-view nil t)
(mh-require 'mml nil t))
;; Copy of function from gnus-util.el.
;; TODO This is not in Gnus 5.11.
(defun-mh mh-gnus-local-map-property gnus-local-map-property (map)
"Return a list suitable for a text property list specifying keymap MAP."
(cond ((featurep 'xemacs) (list 'keymap map))
((>= emacs-major-version 21) (list 'keymap map))
(t (list 'local-map map))))
;; Copy of function from mm-decode.el.
(defun-mh mh-mm-merge-handles mm-merge-handles (handles1 handles2)
(append
(if (listp (car handles1))
handles1
(list handles1))
(if (listp (car handles2))
handles2
(list handles2))))
;; Copy of function from mm-decode.el.
(defun-mh mh-mm-set-handle-multipart-parameter
mm-set-handle-multipart-parameter (handle parameter value)
;; HANDLE could be a CTL.
(when handle
(put-text-property 0 (length (car handle)) parameter value
(car handle))))
;; Copy of function from mm-view.el.
(defun-mh mh-mm-inline-text-vcard mm-inline-text-vcard (handle)
(let ((inhibit-read-only t))
(mm-insert-inline
handle
(concat "\n-- \n"
(ignore-errors
(if (fboundp 'vcard-pretty-print)
(vcard-pretty-print (mm-get-part handle))
(vcard-format-string
(vcard-parse-string (mm-get-part handle)
'vcard-standard-filter))))))))
;; Function from mm-decode.el used in PGP messages. Just define it with older
;; Gnus to avoid compiler warning.
(defun-mh mh-mm-possibly-verify-or-decrypt
mm-possibly-verify-or-decrypt (_parts _ctl)
nil)
;; Copy of macro in mm-decode.el.
(defmacro-mh mh-mm-handle-multipart-ctl-parameter
mm-handle-multipart-ctl-parameter (handle parameter)
`(get-text-property 0 ,parameter (car ,handle)))
;; Copy of function in mm-decode.el.
(defun-mh mh-mm-readable-p mm-readable-p (handle)
"Say whether the content of HANDLE is readable."
(and (< (with-current-buffer (mm-handle-buffer handle)
(buffer-size)) 10000)
(mm-with-unibyte-buffer
(mm-insert-part handle)
(and (eq (mm-body-7-or-8) '7bit)
(not (mh-mm-long-lines-p 76))))))
;; Copy of function in mm-bodies.el.
(defun-mh mh-mm-long-lines-p mm-long-lines-p (length)
"Say whether any of the lines in the buffer is longer than LENGTH."
(save-excursion
(goto-char (point-min))
(end-of-line)
(while (and (not (eobp))
(not (> (current-column) length)))
(forward-line 1)
(end-of-line))
(and (> (current-column) length)
(current-column))))
(defun-mh mh-mm-keep-viewer-alive-p mm-keep-viewer-alive-p (_handle)
;; Released Gnus doesn't keep handles associated with externally displayed
;; MIME parts. So this will always return nil.
nil)
(defun-mh mh-mm-destroy-parts mm-destroy-parts (_list)
"Older versions of Emacs don't have this function."
nil)
(defun-mh mh-mm-uu-dissect-text-parts mm-uu-dissect-text-parts (_handles)
"Emacs 21 and XEmacs don't have this function."
nil)
;; Copy of function in mml.el.
(defun-mh mh-mml-minibuffer-read-disposition
mml-minibuffer-read-disposition (type &optional default filename)
(unless default
(setq default (mml-content-disposition type filename)))
(let ((disposition (completing-read
(format "Disposition (default %s): " default)
'(("attachment") ("inline") (""))
nil t nil nil default)))
(if (not (equal disposition ""))
disposition
default)))
;; This is mm-save-part from Gnus 5.11 since that function in Emacs
;; 21.2 is buggy (the args to read-file-name are incorrect) and the
;; version in Emacs 22 is not consistent with C-x C-w in that you
;; can't just specify a directory and have the right thing happen.
(defun mh-mm-save-part (handle &optional prompt)
"Write HANDLE to a file.
PROMPT overrides the default one used to ask user for a file name."
(let ((filename (or (mail-content-type-get
(mm-handle-disposition handle) 'filename)
(mail-content-type-get
(mm-handle-type handle) 'name)))
file)
(when filename
(setq filename (gnus-map-function mm-file-name-rewrite-functions
(file-name-nondirectory filename))))
(setq file
(read-file-name (or prompt "Save MIME part to: ")
(or mm-default-directory default-directory)
nil nil (or filename "")))
(setq mm-default-directory (file-name-directory file))
(and (or (not (file-exists-p file))
(yes-or-no-p (format "File %s already exists; overwrite? "
file)))
(progn
(mm-save-part-to-file handle file)
file))))
(defun mh-mm-text-html-renderer ()
"Find the renderer Gnus is using to display text/html MIME parts."
(or (and (boundp 'mm-inline-text-html-renderer) mm-inline-text-html-renderer)
(and (boundp 'mm-text-html-renderer) mm-text-html-renderer)))
(provide 'mh-gnus)
;; Local Variables:
;; no-update-autoloads: t
;; indent-tabs-mode: nil
;; sentence-end-double-space: nil
;; End:
;;; mh-gnus.el ends here
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