code.delx.au - gnu-emacs/blob - lisp/mh-e/mh-gnus.el

   1 ;;; mh-gnus.el --- make MH-E compatible with various versions of Gnus
   2
   3 ;; Copyright (C) 2003, 2004, 2006, 2007, 2008 Free Software Foundation, Inc.
   4
   5 ;; Author: Satyaki Das <satyaki@theforce.stanford.edu>
   6 ;; Maintainer: Bill Wohler <wohler@newt.com>
   7 ;; Keywords: mail
   8 ;; See: mh-e.el
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software; you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation; either version 3, or (at your option)
  15 ;; any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  25 ;; Boston, MA 02110-1301, USA.
  26
  27 ;;; Commentary:
  28
  29 ;;; Change Log:
  30
  31 ;;; Code:
  32
  33 (require 'mh-e)
  34
  35 (mh-require 'gnus-util nil t)
  36 (mh-require 'mm-bodies nil t)
  37 (mh-require 'mm-decode nil t)
  38 (mh-require 'mm-view nil t)
  39 (mh-require 'mml nil t)
  40
  41 ;; Copy of function from gnus-util.el.
  42 (defun-mh mh-gnus-local-map-property gnus-local-map-property (map)
  43   "Return a list suitable for a text property list specifying keymap MAP."
  44   (cond ((featurep 'xemacs) (list 'keymap map))
  45         ((>= emacs-major-version 21) (list 'keymap map))
  46         (t (list 'local-map map))))
  47
  48 ;; Copy of function from mm-decode.el.
  49 (defun-mh mh-mm-merge-handles mm-merge-handles (handles1 handles2)
  50   (append (if (listp (car handles1)) handles1 (list handles1))
  51           (if (listp (car handles2)) handles2 (list handles2))))
  52
  53 ;; Copy of function from mm-decode.el.
  54 (defun-mh mh-mm-set-handle-multipart-parameter
  55   mm-set-handle-multipart-parameter (handle parameter value)
  56   ;; HANDLE could be a CTL.
  57   (if handle
  58       (put-text-property 0 (length (car handle)) parameter value
  59                          (car handle))))
  60
  61 ;; Copy of function from mm-view.el.
  62 (defun-mh mh-mm-inline-text-vcard mm-inline-text-vcard (handle)
  63   (let (buffer-read-only)
  64     (mm-insert-inline
  65      handle
  66      (concat "\n-- \n"
  67              (ignore-errors
  68                (if (fboundp 'vcard-pretty-print)
  69                    (vcard-pretty-print (mm-get-part handle))
  70                  (vcard-format-string
  71                   (vcard-parse-string (mm-get-part handle)
  72                                       'vcard-standard-filter))))))))
  73
  74 ;; Function from mm-decode.el used in PGP messages. Just define it with older
  75 ;; Gnus to avoid compiler warning.
  76 (defun-mh mh-mm-possibly-verify-or-decrypt
  77   mm-possibly-verify-or-decrypt (parts ctl)
  78   nil)
  79
  80 ;; Copy of macro in mm-decode.el.
  81 (defmacro-mh mh-mm-handle-multipart-ctl-parameter
  82   mm-handle-multipart-ctl-parameter (handle parameter)
  83   `(get-text-property 0 ,parameter (car ,handle)))
  84
  85 ;; Copy of function in mm-decode.el.
  86 (defun-mh mh-mm-readable-p mm-readable-p (handle)
  87   "Say whether the content of HANDLE is readable."
  88   (and (< (with-current-buffer (mm-handle-buffer handle)
  89             (buffer-size)) 10000)
  90        (mm-with-unibyte-buffer
  91          (mm-insert-part handle)
  92          (and (eq (mm-body-7-or-8) '7bit)
  93               (not (mh-mm-long-lines-p 76))))))
  94
  95 ;; Copy of function in mm-bodies.el.
  96 (defun-mh mh-mm-long-lines-p mm-long-lines-p (length)
  97   "Say whether any of the lines in the buffer is longer than LENGTH."
  98   (save-excursion
  99     (goto-char (point-min))
 100     (end-of-line)
 101     (while (and (not (eobp))
 102                 (not (> (current-column) length)))
 103       (forward-line 1)
 104       (end-of-line))
 105     (and (> (current-column) length)
 106          (current-column))))
 107
 108 (defun-mh mh-mm-keep-viewer-alive-p mm-keep-viewer-alive-p (handle)
 109   ;; Released Gnus doesn't keep handles associated with externally displayed
 110   ;; MIME parts. So this will always return nil.
 111   nil)
 112
 113 (defun-mh mh-mm-destroy-parts mm-destroy-parts (list)
 114   "Older versions of Emacs don't have this function."
 115   nil)
 116
 117 (defun-mh mh-mm-uu-dissect-text-parts mm-uu-dissect-text-parts (handles)
 118   "Emacs 21 and XEmacs don't have this function."
 119   nil)
 120
 121 ;; Copy of function in mml.el.
 122 (defun-mh mh-mml-minibuffer-read-disposition
 123   mml-minibuffer-read-disposition (type &optional default)
 124   (unless default (setq default
 125                         (if (and (string-match "\\`text/" type)
 126                                  (not (string-match "\\`text/rtf\\'" type)))
 127                             "inline"
 128                           "attachment")))
 129   (let ((disposition (completing-read
 130                       (format "Disposition (default %s): " default)
 131                       '(("attachment") ("inline") (""))
 132                       nil t nil nil default)))
 133     (if (not (equal disposition ""))
 134         disposition
 135       default)))
 136
 137 ;; This is mm-save-part from Gnus 5.10 since that function in emacs21.2 is
 138 ;; buggy (the args to read-file-name are incorrect). When all supported
 139 ;; versions of Emacs come with at least Gnus 5.10, we can delete this
 140 ;; function and rename calls to mh-mm-save-part to mm-save-part.
 141 (defun mh-mm-save-part (handle)
 142   "Write HANDLE to a file."
 143   (let ((name (mail-content-type-get (mm-handle-type handle) 'name))
 144         (filename (mail-content-type-get
 145                    (mm-handle-disposition handle) 'filename))
 146         file)
 147     (when filename
 148       (setq filename (file-name-nondirectory filename)))
 149     (setq file (read-file-name "Save MIME part to: "
 150                                (or mm-default-directory
 151                                    default-directory)
 152                                nil nil (or filename name "")))
 153     (setq mm-default-directory (file-name-directory file))
 154     (and (or (not (file-exists-p file))
 155              (yes-or-no-p (format "File %s already exists; overwrite? "
 156                                   file)))
 157          (mm-save-part-to-file handle file))))
 158
 159 (defun mh-mm-text-html-renderer ()
 160   "Find the renderer Gnus is using to display text/html MIME parts."
 161   (or (and (boundp 'mm-inline-text-html-renderer) mm-inline-text-html-renderer)
 162       (and (boundp 'mm-text-html-renderer) mm-text-html-renderer)))
 163
 164 (provide 'mh-gnus)
 165
 166 ;; Local Variables:
 167 ;; no-byte-compile: t
 168 ;; no-update-autoloads: t
 169 ;; indent-tabs-mode: nil
 170 ;; sentence-end-double-space: nil
 171 ;; End:
 172
 173 ;; arch-tag: 1e3638af-cad3-4c69-8427-bc8eb6e5e4fa
 174 ;;; mh-gnus.el ends here