1 ;;; gnus-ems.el --- functions for making Gnus work under different Emacsen
2 ;; Copyright (C) 1995,96,97 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
28 (eval-when-compile (require 'cl))
30 ;;; Function aliases later to be redefined for XEmacs usage.
32 (defvar gnus-xemacs (string-match "XEmacs\\|Lucid" emacs-version)
33 "Non-nil if running under XEmacs.")
35 (defvar gnus-mouse-2 [mouse-2])
36 (defvar gnus-down-mouse-2 [down-mouse-2])
37 (defvar gnus-mode-line-modified
39 (< emacs-major-version 20))
44 (autoload 'gnus-xmas-define "gnus-xmas")
45 (autoload 'gnus-xmas-redefine "gnus-xmas")
46 (autoload 'appt-select-lowest-window "appt"))
48 (or (fboundp 'mail-file-babyl-p)
49 (fset 'mail-file-babyl-p 'rmail-file-p))
53 (defun gnus-mule-cite-add-face (number prefix face)
54 ;; At line NUMBER, ignore PREFIX and add FACE to the rest of the line.
56 (let ((inhibit-point-motion-hooks t)
60 (forward-char (chars-in-string prefix))
61 (forward-char (length prefix)))
62 (skip-chars-forward " \t")
65 (skip-chars-backward " \t")
68 (gnus-overlay-put (gnus-make-overlay from to) 'face face)))))
70 (defun gnus-mule-max-width-function (el max-width)
71 (` (let* ((val (eval (, el)))
72 (valstr (if (numberp val)
73 (int-to-string val) val)))
74 (if (> (length valstr) (, max-width))
75 (truncate-string valstr (, max-width))
78 (defun gnus-encode-coding-string (string system)
81 (defun gnus-decode-coding-string (string system)
85 (if (string-match "XEmacs\\|Lucid" emacs-version)
88 (defvar gnus-mouse-face-prop 'mouse-face
89 "Property used for highlighting mouse regions."))
92 ((string-match "XEmacs\\|Lucid" emacs-version)
95 ((or (not (boundp 'emacs-minor-version))
96 (and (< emacs-major-version 20)
97 (< emacs-minor-version 30)))
98 ;; Remove the `intangible' prop.
99 (let ((props (and (boundp 'gnus-hidden-properties)
100 gnus-hidden-properties)))
101 (while (and props (not (eq (car (cdr props)) 'intangible)))
102 (setq props (cdr props)))
104 (setcdr props (cdr (cdr (cdr props))))))
105 (unless (fboundp 'buffer-substring-no-properties)
106 (defun buffer-substring-no-properties (beg end)
107 (format "%s" (buffer-substring beg end)))))
110 (provide 'gnusutil))))
115 (defun gnus-dummy-func (&rest args))
116 (let ((funcs '(mouse-set-point set-face-foreground
117 set-face-background x-popup-menu)))
119 (unless (fboundp (car funcs))
120 (fset (car funcs) 'gnus-dummy-func))
121 (setq funcs (cdr funcs))))))
122 (unless (fboundp 'file-regular-p)
123 (defun file-regular-p (file)
124 (and (not (file-directory-p file))
125 (not (file-symlink-p file))
126 (file-exists-p file))))
127 (unless (fboundp 'face-list)
128 (defun face-list (&rest args))))
131 (let ((case-fold-search t))
133 ((string-match "windows-nt\\|os/2\\|emx" (format "%s" system-type))
134 (setq nnheader-file-name-translation-alist
135 (append nnheader-file-name-translation-alist
139 (defvar gnus-tmp-unread)
140 (defvar gnus-tmp-replied)
141 (defvar gnus-tmp-score-char)
142 (defvar gnus-tmp-indentation)
143 (defvar gnus-tmp-opening-bracket)
144 (defvar gnus-tmp-lines)
145 (defvar gnus-tmp-name)
146 (defvar gnus-tmp-closing-bracket)
147 (defvar gnus-tmp-subject-or-nil)
149 (defun gnus-ems-redefine ()
151 ((string-match "XEmacs\\|Lucid" emacs-version)
152 (gnus-xmas-redefine))
155 ;; Mule and new Emacs definitions
157 ;; [Note] Now there are three kinds of mule implementations,
158 ;; original MULE, XEmacs/mule and beta version of Emacs including
159 ;; some mule features. Unfortunately these API are different. In
160 ;; particular, Emacs (including original MULE) and XEmacs are
162 ;; Predicates to check are following:
163 ;; (boundp 'MULE) is t only if MULE (original; anything older than
164 ;; Mule 2.3) is running.
165 ;; (featurep 'mule) is t when every mule variants are running.
167 ;; These implementations may be able to share between original
168 ;; MULE and beta version of new Emacs. In addition, it is able to
169 ;; detect XEmacs/mule by (featurep 'mule) and to check variable
170 ;; `emacs-version'. In this case, implementation for XEmacs/mule
171 ;; may be able to share between XEmacs and XEmacs/mule.
173 (defalias 'gnus-truncate-string 'truncate-string)
175 (defvar gnus-summary-display-table nil
176 "Display table used in summary mode buffers.")
177 (fset 'gnus-cite-add-face 'gnus-mule-cite-add-face)
178 (fset 'gnus-max-width-function 'gnus-mule-max-width-function)
179 (fset 'gnus-summary-set-display-table 'ignore)
180 (fset 'gnus-encode-coding-string 'encode-coding-string)
181 (fset 'gnus-decode-coding-string 'decode-coding-string)
183 (when (boundp 'gnus-check-before-posting)
184 (setq gnus-check-before-posting
186 (delq 'control-chars gnus-check-before-posting))))
188 (defun gnus-summary-line-format-spec ()
189 (insert gnus-tmp-unread gnus-tmp-replied
190 gnus-tmp-score-char gnus-tmp-indentation)
195 gnus-tmp-opening-bracket
198 (if (> (length gnus-tmp-name) 20)
199 (truncate-string gnus-tmp-name 20)
201 gnus-tmp-closing-bracket)
203 gnus-mouse-face-prop gnus-mouse-face)
204 (insert " " gnus-tmp-subject-or-nil "\n"))
207 (defun gnus-region-active-p ()
208 "Say whether the region is active."
209 (and (boundp 'transient-mark-mode)
211 (boundp 'mark-active)
214 (defun gnus-add-minor-mode (mode name map)
215 (if (fboundp 'add-minor-mode)
216 (add-minor-mode mode name map)
217 (unless (assq mode minor-mode-alist)
218 (push `(,mode ,name) minor-mode-alist))
219 (unless (assq mode minor-mode-map-alist)
220 (push (cons mode map)
221 minor-mode-map-alist))))
223 (defun gnus-x-splash ()
224 "Show a splash screen using a pixmap in the current buffer."
225 (let ((dir (nnheader-find-etc-directory "gnus"))
226 pixmap file height beg i)
228 (switch-to-buffer (get-buffer-create gnus-group-buffer))
229 (let ((buffer-read-only nil))
232 (file-exists-p (setq file (concat dir "x-splash"))))
233 (nnheader-temp-write nil
234 (insert-file-contents file)
235 (goto-char (point-min))
237 (setq pixmap (read (current-buffer))))))
240 (unless (facep 'gnus-splash)
241 (make-face 'gnus-splash))
242 (setq height (/ (car pixmap) (frame-char-height))
243 width (/ (cadr pixmap) (frame-char-width)))
244 (set-face-foreground 'gnus-splash "ForestGreen")
245 (set-face-stipple 'gnus-splash pixmap)
246 (insert-char ?\n (* (/ (window-height) 2 height) height))
249 (insert-char ? (* (+ (/ (window-width) 2 width) 1) width))
251 (insert-char ? width)
252 (set-text-properties beg (point) '(face gnus-splash))
255 (goto-char (point-min))
261 ;; byte-compile-warnings: '(redefine callargs)
264 ;;; gnus-ems.el ends here