1 ;;; gnus-ems.el --- functions for making Semi-gnus work under different Emacsen
2 ;; Copyright (C) 1995,96,97,98,99 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
5 ;; Tatsuya Ichikawa <t-ichi@niagara.shiojiri.ne.jp>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
29 (eval-when-compile (require 'cl))
31 ;;; Function aliases later to be redefined for XEmacs usage.
33 (defvar gnus-xemacs (string-match "XEmacs\\|Lucid" emacs-version)
34 "Non-nil if running under XEmacs.")
36 (defvar gnus-mouse-2 [mouse-2])
37 (defvar gnus-down-mouse-3 [down-mouse-3])
38 (defvar gnus-down-mouse-2 [down-mouse-2])
39 (defvar gnus-widget-button-keymap nil)
40 (defvar gnus-mode-line-modified
42 (< emacs-major-version 20))
47 (autoload 'gnus-xmas-define "gnus-xmas")
48 (autoload 'gnus-xmas-redefine "gnus-xmas")
49 (autoload 'appt-select-lowest-window "appt"))
51 (or (fboundp 'mail-file-babyl-p)
52 (fset 'mail-file-babyl-p 'rmail-file-p))
56 (defun gnus-mule-cite-add-face (number prefix face)
57 ;; At line NUMBER, ignore PREFIX and add FACE to the rest of the line.
59 (let ((inhibit-point-motion-hooks t)
62 (unless (eobp) ; Sometimes things become confused (broken).
63 (forward-char (chars-in-string prefix))
64 (skip-chars-forward " \t")
67 (skip-chars-backward " \t")
70 (push (setq overlay (gnus-make-overlay from to))
71 gnus-cite-overlay-list)
72 (gnus-overlay-put (gnus-make-overlay from to) 'face face))))))
74 (defvar gnus-mule-bitmap-image-file nil)
75 (defun gnus-mule-group-startup-message (&optional x y)
76 "Insert startup message in current buffer."
77 ;; Insert the message.
80 (if (featurep 'bitmap)
84 "" (if (and (stringp gnus-mule-bitmap-image-file)
85 (file-exists-p gnus-mule-bitmap-image-file))
86 (insert-file gnus-mule-bitmap-image-file)))
109 (gnus-indent-rigidly (point-min) (point-max)
110 (/ (max (- (window-width) (or x 46)) 0) 2))
111 (goto-char (point-min))
113 (let* ((pheight (count-lines (point-min) (point-max)))
114 (wheight (window-height))
115 (rest (- wheight pheight)))
116 (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n)))
118 (put-text-property (point-min) (point-max) 'face 'gnus-splash-face)
119 (goto-char (point-min))
120 (setq mode-line-buffer-identification (concat " " gnus-version))
121 (setq gnus-simple-splash t)
122 (set-buffer-modified-p t))
125 (if (string-match "XEmacs\\|Lucid" emacs-version)
128 (defvar gnus-mouse-face-prop 'mouse-face
129 "Property used for highlighting mouse regions."))
132 ((string-match "XEmacs\\|Lucid" emacs-version)
135 ((or (not (boundp 'emacs-minor-version))
136 (and (< emacs-major-version 20)
137 (< emacs-minor-version 30)))
138 ;; Remove the `intangible' prop.
139 (let ((props (and (boundp 'gnus-hidden-properties)
140 gnus-hidden-properties)))
141 (while (and props (not (eq (car (cdr props)) 'intangible)))
142 (setq props (cdr props)))
144 (setcdr props (cdr (cdr (cdr props))))))
145 (unless (fboundp 'buffer-substring-no-properties)
146 (defun buffer-substring-no-properties (beg end)
147 (format "%s" (buffer-substring beg end)))))
150 (provide 'gnusutil))))
155 (defun gnus-dummy-func (&rest args))
156 (let ((funcs '(mouse-set-point set-face-foreground
157 set-face-background x-popup-menu)))
159 (unless (fboundp (car funcs))
160 (fset (car funcs) 'gnus-dummy-func))
161 (setq funcs (cdr funcs)))))))
164 (let ((case-fold-search t))
166 ((string-match "windows-nt\\|os/2\\|emx" (symbol-name system-type))
167 (setq nnheader-file-name-translation-alist
168 (append nnheader-file-name-translation-alist
172 (defvar gnus-tmp-unread)
173 (defvar gnus-tmp-replied)
174 (defvar gnus-tmp-score-char)
175 (defvar gnus-tmp-indentation)
176 (defvar gnus-tmp-opening-bracket)
177 (defvar gnus-tmp-lines)
178 (defvar gnus-tmp-name)
179 (defvar gnus-tmp-closing-bracket)
180 (defvar gnus-tmp-subject-or-nil)
182 (defun gnus-ems-redefine ()
184 ((string-match "XEmacs\\|Lucid" emacs-version)
185 (gnus-xmas-redefine))
188 ;; Mule and new Emacs definitions
190 ;; [Note] Now there are three kinds of mule implementations,
191 ;; original MULE, XEmacs/mule and beta version of Emacs including
192 ;; some mule features. Unfortunately these API are different. In
193 ;; particular, Emacs (including original MULE) and XEmacs are
195 ;; Predicates to check are following:
196 ;; (boundp 'MULE) is t only if MULE (original; anything older than
197 ;; Mule 2.3) is running.
198 ;; (featurep 'mule) is t when every mule variants are running.
200 ;; These implementations may be able to share between original
201 ;; MULE and beta version of new Emacs. In addition, it is able to
202 ;; detect XEmacs/mule by (featurep 'mule) and to check variable
203 ;; `emacs-version'. In this case, implementation for XEmacs/mule
204 ;; may be able to share between XEmacs and XEmacs/mule.
206 (defvar gnus-summary-display-table nil
207 "Display table used in summary mode buffers.")
208 (fset 'gnus-summary-set-display-table (lambda ()))
210 (if (fboundp 'truncate-string-to-width)
211 (fset 'gnus-truncate-string 'truncate-string-to-width)
212 (fset 'gnus-truncate-string 'truncate-string))
214 (defun gnus-tilde-max-form (el max-width)
215 "Return a form that limits EL to MAX-WIDTH."
216 (let ((max (abs max-width)))
218 `(if (> (string-width ,el) ,max)
220 `(gnus-truncate-string
221 ,el (string-width ,el)
222 (- (string-width ,el) ,max))
223 `(gnus-truncate-string ,el ,max))
225 `(let ((val (eval ,el)))
226 (if (> (string-width val) ,max)
228 `(gnus-truncate-string
229 val (string-width val)
230 (- (string-width val) ,max))
231 `(gnus-truncate-string val ,max))
234 (defun gnus-tilde-cut-form (el cut-width)
235 "Return a form that cuts CUT-WIDTH off of EL."
236 (let ((cut (abs cut-width)))
238 `(if (> (string-width ,el) ,cut)
240 `(gnus-truncate-string
241 ,el (- (string-width ,el) ,cut))
242 `(gnus-truncate-string
243 ,el (- (string-width ,el) ,cut) ,cut))
245 `(let ((val (eval ,el)))
246 (if (> (string-width val) ,cut)
248 `(gnus-truncate-string
249 val (- (string-width val) ,cut))
250 `(gnus-truncate-string
251 val (- (string-width val) ,cut) ,cut))
256 (if (module-installed-p 'bitmap)
257 (fset 'gnus-group-startup-message 'gnus-mule-group-startup-message)
260 (when (boundp 'gnus-check-before-posting)
261 (setq gnus-check-before-posting
263 (delq 'control-chars gnus-check-before-posting))))
265 (when (fboundp 'chars-in-string)
266 (fset 'gnus-cite-add-face 'gnus-mule-cite-add-face))
270 (defun gnus-region-active-p ()
271 "Say whether the region is active."
272 (and (boundp 'transient-mark-mode)
274 (boundp 'mark-active)
277 (defun gnus-add-minor-mode (mode name map)
278 (if (fboundp 'add-minor-mode)
279 (add-minor-mode mode name map)
280 (set (make-local-variable mode) t)
281 (unless (assq mode minor-mode-alist)
282 (push `(,mode ,name) minor-mode-alist))
283 (unless (assq mode minor-mode-map-alist)
284 (push (cons mode map)
285 minor-mode-map-alist))))
287 (defun gnus-x-splash ()
288 "Show a splash screen using a pixmap in the current buffer."
289 (let ((dir (nnheader-find-etc-directory "gnus"))
290 pixmap file height beg i)
292 (switch-to-buffer (gnus-get-buffer-create gnus-group-buffer))
293 (let ((buffer-read-only nil))
296 (file-exists-p (setq file (concat dir "x-splash"))))
298 (insert-file-contents file)
299 (goto-char (point-min))
301 (setq pixmap (read (current-buffer))))))
303 (unless (facep 'gnus-splash)
304 (make-face 'gnus-splash))
305 (setq height (/ (car pixmap) (frame-char-height))
306 width (/ (cadr pixmap) (frame-char-width)))
307 (set-face-foreground 'gnus-splash "ForestGreen")
308 (set-face-stipple 'gnus-splash pixmap)
309 (insert-char ?\n (* (/ (window-height) 2 height) height))
312 (insert-char ? (* (/ (window-width) 2 width) width))
314 (insert-char ? width)
315 (set-text-properties beg (point) '(face gnus-splash))
318 (goto-char (point-min))
321 (if (fboundp 'split-string)
322 (fset 'gnus-split-string 'split-string)
323 (defun gnus-split-string (string pattern)
324 "Return a list of substrings of STRING which are separated by PATTERN."
325 (let (parts (start 0))
326 (while (string-match pattern string start)
327 (setq parts (cons (substring string start (match-beginning 0)) parts)
328 start (match-end 0)))
329 (nreverse (cons (substring string start) parts)))))
334 ;; byte-compile-warnings: '(redefine callargs)
337 ;;; gnus-ems.el ends here