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-mode-line-modified
40 (< emacs-major-version 20))
45 (autoload 'gnus-xmas-define "gnus-xmas")
46 (autoload 'gnus-xmas-redefine "gnus-xmas")
47 (autoload 'appt-select-lowest-window "appt"))
49 (or (fboundp 'mail-file-babyl-p)
50 (fset 'mail-file-babyl-p 'rmail-file-p))
54 (defun gnus-mule-cite-add-face (number prefix face)
55 ;; At line NUMBER, ignore PREFIX and add FACE to the rest of the line.
57 (let ((inhibit-point-motion-hooks t)
60 (unless (eobp) ; Sometimes things become confused (broken).
61 (forward-char (chars-in-string prefix))
62 (skip-chars-forward " \t")
65 (skip-chars-backward " \t")
68 (push (setq overlay (gnus-make-overlay from to))
69 gnus-cite-overlay-list)
70 (gnus-overlay-put (gnus-make-overlay from to) 'face face))))))
72 (defun gnus-mule-max-width-function (el max-width)
73 (` (let* ((val (eval (, el)))
74 (valstr (if (numberp val)
75 (int-to-string val) val)))
76 (if (> (length valstr) (, max-width))
77 (truncate-string valstr (, max-width))
80 (defvar gnus-mule-bitmap-image-file nil)
81 (defun gnus-mule-group-startup-message (&optional x y)
82 "Insert startup message in current buffer."
83 ;; Insert the message.
86 (if (featurep 'bitmap)
90 "" (if (and (stringp gnus-mule-bitmap-image-file)
91 (file-exists-p gnus-mule-bitmap-image-file))
92 (insert-file gnus-mule-bitmap-image-file)))
115 (gnus-indent-rigidly (point-min) (point-max)
116 (/ (max (- (window-width) (or x 46)) 0) 2))
117 (goto-char (point-min))
119 (let* ((pheight (count-lines (point-min) (point-max)))
120 (wheight (window-height))
121 (rest (- wheight pheight)))
122 (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n)))
124 (put-text-property (point-min) (point-max) 'face 'gnus-splash-face)
125 (goto-char (point-min))
126 (setq mode-line-buffer-identification (concat " " gnus-version))
127 (setq gnus-simple-splash t)
128 (set-buffer-modified-p t))
130 (defun gnus-encode-coding-string (string system)
133 (defun gnus-decode-coding-string (string system)
137 (if (string-match "XEmacs\\|Lucid" emacs-version)
140 (defvar gnus-mouse-face-prop 'mouse-face
141 "Property used for highlighting mouse regions."))
144 ((string-match "XEmacs\\|Lucid" emacs-version)
147 ((or (not (boundp 'emacs-minor-version))
148 (and (< emacs-major-version 20)
149 (< emacs-minor-version 30)))
150 ;; Remove the `intangible' prop.
151 (let ((props (and (boundp 'gnus-hidden-properties)
152 gnus-hidden-properties)))
153 (while (and props (not (eq (car (cdr props)) 'intangible)))
154 (setq props (cdr props)))
156 (setcdr props (cdr (cdr (cdr props))))))
157 (unless (fboundp 'buffer-substring-no-properties)
158 (defun buffer-substring-no-properties (beg end)
159 (format "%s" (buffer-substring beg end)))))
162 (provide 'gnusutil))))
167 (defun gnus-dummy-func (&rest args))
168 (let ((funcs '(mouse-set-point set-face-foreground
169 set-face-background x-popup-menu)))
171 (unless (fboundp (car funcs))
172 (fset (car funcs) 'gnus-dummy-func))
173 (setq funcs (cdr funcs))))))
174 (unless (fboundp 'file-regular-p)
175 (defun file-regular-p (file)
176 (and (not (file-directory-p file))
177 (not (file-symlink-p file))
178 (file-exists-p file))))
179 (unless (fboundp 'face-list)
180 (defun face-list (&rest args))))
183 (let ((case-fold-search t))
185 ((string-match "windows-nt\\|os/2\\|emx" (symbol-name system-type))
186 (setq nnheader-file-name-translation-alist
187 (append nnheader-file-name-translation-alist
191 (defvar gnus-tmp-unread)
192 (defvar gnus-tmp-replied)
193 (defvar gnus-tmp-score-char)
194 (defvar gnus-tmp-indentation)
195 (defvar gnus-tmp-opening-bracket)
196 (defvar gnus-tmp-lines)
197 (defvar gnus-tmp-name)
198 (defvar gnus-tmp-closing-bracket)
199 (defvar gnus-tmp-subject-or-nil)
201 (defun gnus-ems-redefine ()
203 ((string-match "XEmacs\\|Lucid" emacs-version)
204 (gnus-xmas-redefine))
207 ;; Mule and new Emacs definitions
209 ;; [Note] Now there are three kinds of mule implementations,
210 ;; original MULE, XEmacs/mule and beta version of Emacs including
211 ;; some mule features. Unfortunately these API are different. In
212 ;; particular, Emacs (including original MULE) and XEmacs are
214 ;; Predicates to check are following:
215 ;; (boundp 'MULE) is t only if MULE (original; anything older than
216 ;; Mule 2.3) is running.
217 ;; (featurep 'mule) is t when every mule variants are running.
219 ;; These implementations may be able to share between original
220 ;; MULE and beta version of new Emacs. In addition, it is able to
221 ;; detect XEmacs/mule by (featurep 'mule) and to check variable
222 ;; `emacs-version'. In this case, implementation for XEmacs/mule
223 ;; may be able to share between XEmacs and XEmacs/mule.
225 (defvar gnus-summary-display-table nil
226 "Display table used in summary mode buffers.")
227 (fset 'gnus-summary-set-display-table (lambda ()))
228 (fset 'gnus-encode-coding-string 'encode-coding-string)
229 (fset 'gnus-decode-coding-string 'decode-coding-string)
233 (if (module-installed-p 'bitmap)
234 (fset 'gnus-group-startup-message 'gnus-mule-group-startup-message)
237 (when (boundp 'gnus-check-before-posting)
238 (setq gnus-check-before-posting
240 (delq 'control-chars gnus-check-before-posting))))
242 (unless (and (fboundp 'set-buffer-multibyte)
243 (subrp (symbol-function 'set-buffer-multibyte)))
244 ;; For Emacs 20.1 and 20.2
245 (defalias 'gnus-truncate-string 'truncate-string)
246 (fset 'gnus-cite-add-face 'gnus-mule-cite-add-face)
247 (fset 'gnus-max-width-function 'gnus-mule-max-width-function)
249 (defun gnus-tilde-max-form (el max-width)
250 "Return a form that limits EL to MAX-WIDTH."
251 (let ((max (abs max-width)))
253 `(if (> (length ,el) ,max)
256 ,el (string-width ,el) (- (string-width ,el) ,max))
257 `(truncate-string ,el ,max))
259 `(let ((val (eval ,el)))
260 (if (> (length val) ,max)
263 val (string-width val) (- (string-width val) ,max))
264 `(truncate-string val ,max))
269 (defun gnus-region-active-p ()
270 "Say whether the region is active."
271 (and (boundp 'transient-mark-mode)
273 (boundp 'mark-active)
276 (defun gnus-add-minor-mode (mode name map)
277 (if (fboundp 'add-minor-mode)
278 (add-minor-mode mode name map)
279 (set (make-local-variable mode) t)
280 (unless (assq mode minor-mode-alist)
281 (push `(,mode ,name) minor-mode-alist))
282 (unless (assq mode minor-mode-map-alist)
283 (push (cons mode map)
284 minor-mode-map-alist))))
286 (defun gnus-x-splash ()
287 "Show a splash screen using a pixmap in the current buffer."
288 (let ((dir (nnheader-find-etc-directory "gnus"))
289 pixmap file height beg i)
291 (switch-to-buffer (gnus-get-buffer-create gnus-group-buffer))
292 (let ((buffer-read-only nil))
295 (file-exists-p (setq file (concat dir "x-splash"))))
296 (nnheader-temp-write nil
297 (insert-file-contents file)
298 (goto-char (point-min))
300 (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) 1) 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