1 ;;; gnus-ems.el --- functions for making Semi-gnus work under different Emacsen
2 ;; Copyright (C) 1995,96,97,98 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-2 [down-mouse-2])
38 (defvar gnus-widget-button-keymap nil)
39 (defvar gnus-mode-line-modified
41 (< emacs-major-version 20))
46 (autoload 'gnus-xmas-define "gnus-xmas")
47 (autoload 'gnus-xmas-redefine "gnus-xmas")
48 (autoload 'appt-select-lowest-window "appt"))
50 (or (fboundp 'mail-file-babyl-p)
51 (fset 'mail-file-babyl-p 'rmail-file-p))
55 (defun gnus-mule-cite-add-face (number prefix face)
56 ;; At line NUMBER, ignore PREFIX and add FACE to the rest of the line.
58 (let ((inhibit-point-motion-hooks t)
61 (unless (eobp) ; Sometimes things become confused (broken).
62 (forward-char (chars-in-string prefix))
63 (skip-chars-forward " \t")
66 (skip-chars-backward " \t")
69 (push (setq overlay (gnus-make-overlay from to))
70 gnus-cite-overlay-list)
71 (gnus-overlay-put (gnus-make-overlay from to) 'face face))))))
73 (defvar gnus-mule-bitmap-image-file nil)
74 (defun gnus-mule-group-startup-message (&optional x y)
75 "Insert startup message in current buffer."
76 ;; Insert the message.
79 (if (featurep 'bitmap)
83 "" (if (and (stringp gnus-mule-bitmap-image-file)
84 (file-exists-p gnus-mule-bitmap-image-file))
85 (insert-file gnus-mule-bitmap-image-file)))
108 (gnus-indent-rigidly (point-min) (point-max)
109 (/ (max (- (window-width) (or x 46)) 0) 2))
110 (goto-char (point-min))
112 (let* ((pheight (count-lines (point-min) (point-max)))
113 (wheight (window-height))
114 (rest (- wheight pheight)))
115 (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n)))
117 (put-text-property (point-min) (point-max) 'face 'gnus-splash-face)
118 (goto-char (point-min))
119 (setq mode-line-buffer-identification (concat " " gnus-version))
120 (setq gnus-simple-splash t)
121 (set-buffer-modified-p t))
123 (defun gnus-encode-coding-string (string system)
126 (defun gnus-decode-coding-string (string system)
130 (if (string-match "XEmacs\\|Lucid" emacs-version)
133 (defvar gnus-mouse-face-prop 'mouse-face
134 "Property used for highlighting mouse regions."))
137 ((string-match "XEmacs\\|Lucid" emacs-version)
140 ((or (not (boundp 'emacs-minor-version))
141 (and (< emacs-major-version 20)
142 (< emacs-minor-version 30)))
143 ;; Remove the `intangible' prop.
144 (let ((props (and (boundp 'gnus-hidden-properties)
145 gnus-hidden-properties)))
146 (while (and props (not (eq (car (cdr props)) 'intangible)))
147 (setq props (cdr props)))
149 (setcdr props (cdr (cdr (cdr props))))))
150 (unless (fboundp 'buffer-substring-no-properties)
151 (defun buffer-substring-no-properties (beg end)
152 (format "%s" (buffer-substring beg end)))))
155 (provide 'gnusutil))))
160 (defun gnus-dummy-func (&rest args))
161 (let ((funcs '(mouse-set-point set-face-foreground
162 set-face-background x-popup-menu)))
164 (unless (fboundp (car funcs))
165 (fset (car funcs) 'gnus-dummy-func))
166 (setq funcs (cdr funcs))))))
167 (unless (fboundp 'file-regular-p)
168 (defun file-regular-p (file)
169 (and (not (file-directory-p file))
170 (not (file-symlink-p file))
171 (file-exists-p file))))
172 (unless (fboundp 'face-list)
173 (defun face-list (&rest args))))
176 (let ((case-fold-search t))
178 ((string-match "windows-nt\\|os/2\\|emx" (symbol-name system-type))
179 (setq nnheader-file-name-translation-alist
180 (append nnheader-file-name-translation-alist
184 (defvar gnus-tmp-unread)
185 (defvar gnus-tmp-replied)
186 (defvar gnus-tmp-score-char)
187 (defvar gnus-tmp-indentation)
188 (defvar gnus-tmp-opening-bracket)
189 (defvar gnus-tmp-lines)
190 (defvar gnus-tmp-name)
191 (defvar gnus-tmp-closing-bracket)
192 (defvar gnus-tmp-subject-or-nil)
194 (defun gnus-ems-redefine ()
196 ((string-match "XEmacs\\|Lucid" emacs-version)
197 (gnus-xmas-redefine))
200 ;; Mule and new Emacs definitions
202 ;; [Note] Now there are three kinds of mule implementations,
203 ;; original MULE, XEmacs/mule and beta version of Emacs including
204 ;; some mule features. Unfortunately these API are different. In
205 ;; particular, Emacs (including original MULE) and XEmacs are
207 ;; Predicates to check are following:
208 ;; (boundp 'MULE) is t only if MULE (original; anything older than
209 ;; Mule 2.3) is running.
210 ;; (featurep 'mule) is t when every mule variants are running.
212 ;; These implementations may be able to share between original
213 ;; MULE and beta version of new Emacs. In addition, it is able to
214 ;; detect XEmacs/mule by (featurep 'mule) and to check variable
215 ;; `emacs-version'. In this case, implementation for XEmacs/mule
216 ;; may be able to share between XEmacs and XEmacs/mule.
218 (defvar gnus-summary-display-table nil
219 "Display table used in summary mode buffers.")
220 (fset 'gnus-summary-set-display-table (lambda ()))
221 (fset 'gnus-encode-coding-string 'encode-coding-string)
222 (fset 'gnus-decode-coding-string 'decode-coding-string)
224 (if (fboundp 'truncate-string-to-width)
225 (fset 'gnus-truncate-string 'truncate-string-to-width)
226 (fset 'gnus-truncate-string 'truncate-string))
228 (defun gnus-tilde-max-form (el max-width)
229 "Return a form that limits EL to MAX-WIDTH."
230 (let ((max (abs max-width)))
232 `(if (> (string-width ,el) ,max)
234 `(gnus-truncate-string
235 ,el (string-width ,el)
236 (- (string-width ,el) ,max))
237 `(gnus-truncate-string ,el ,max))
239 `(let ((val (eval ,el)))
240 (if (> (string-width val) ,max)
242 `(gnus-truncate-string
243 val (string-width val)
244 (- (string-width val) ,max))
245 `(gnus-truncate-string val ,max))
248 (defun gnus-tilde-cut-form (el cut-width)
249 "Return a form that cuts CUT-WIDTH off of EL."
250 (let ((cut (abs cut-width)))
252 `(if (> (string-width ,el) ,cut)
254 `(gnus-truncate-string
255 ,el (- (string-width ,el) ,cut))
256 `(gnus-truncate-string
257 ,el (- (string-width ,el) ,cut) ,cut))
259 `(let ((val (eval ,el)))
260 (if (> (string-width val) ,cut)
262 `(gnus-truncate-string
263 val (- (string-width val) ,cut))
264 `(gnus-truncate-string
265 val (- (string-width val) ,cut) ,cut))
270 (if (module-installed-p 'bitmap)
271 (fset 'gnus-group-startup-message 'gnus-mule-group-startup-message)
274 (when (boundp 'gnus-check-before-posting)
275 (setq gnus-check-before-posting
277 (delq 'control-chars gnus-check-before-posting))))
279 (when (fboundp 'chars-in-string)
280 (fset 'gnus-cite-add-face 'gnus-mule-cite-add-face))
284 (defun gnus-region-active-p ()
285 "Say whether the region is active."
286 (and (boundp 'transient-mark-mode)
288 (boundp 'mark-active)
291 (defun gnus-add-minor-mode (mode name map)
292 (if (fboundp 'add-minor-mode)
293 (add-minor-mode mode name map)
294 (set (make-local-variable mode) t)
295 (unless (assq mode minor-mode-alist)
296 (push `(,mode ,name) minor-mode-alist))
297 (unless (assq mode minor-mode-map-alist)
298 (push (cons mode map)
299 minor-mode-map-alist))))
301 (defun gnus-x-splash ()
302 "Show a splash screen using a pixmap in the current buffer."
303 (let ((dir (nnheader-find-etc-directory "gnus"))
304 pixmap file height beg i)
306 (switch-to-buffer (gnus-get-buffer-create gnus-group-buffer))
307 (let ((buffer-read-only nil))
310 (file-exists-p (setq file (concat dir "x-splash"))))
312 (insert-file-contents file)
313 (goto-char (point-min))
315 (setq pixmap (read (current-buffer))))))
318 (unless (facep 'gnus-splash)
319 (make-face 'gnus-splash))
320 (setq height (/ (car pixmap) (frame-char-height))
321 width (/ (cadr pixmap) (frame-char-width)))
322 (set-face-foreground 'gnus-splash "ForestGreen")
323 (set-face-stipple 'gnus-splash pixmap)
324 (insert-char ?\n (* (/ (window-height) 2 height) height))
327 (insert-char ? (* (+ (/ (window-width) 2 width) 1) width))
329 (insert-char ? width)
330 (set-text-properties beg (point) '(face gnus-splash))
333 (goto-char (point-min))
336 (if (fboundp 'split-string)
337 (fset 'gnus-split-string 'split-string)
338 (defun gnus-split-string (string pattern)
339 "Return a list of substrings of STRING which are separated by PATTERN."
340 (let (parts (start 0))
341 (while (string-match pattern string start)
342 (setq parts (cons (substring string start (match-beginning 0)) parts)
343 start (match-end 0)))
344 (nreverse (cons (substring string start) parts)))))
349 ;; byte-compile-warnings: '(redefine callargs)
352 ;;; gnus-ems.el ends here