1;;; mh-gnus.el --- make MH-E compatible with various versions of Gnus
2
3;; Copyright (C) 2003, 2004, 2006, 2007 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 2, 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 (mh-xemacs-flag (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
175