;;; nnheaderxm.el --- making Gnus backends work under XEmacs
-;; Copyright (C) 1996,97,98,99 Free Software Foundation, Inc.
+
+;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003
+;; Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
+;; Katsumi Yamaoka <yamaoka@jpl.org>
;; Keywords: news
;; This file is part of GNU Emacs.
;;; Code:
-(defun nnheader-xmas-run-at-time (time repeat function &rest args)
- (start-itimer
- "nnheader-run-at-time"
- `(lambda ()
- (,function ,@args))
- time repeat))
+(if (condition-case nil
+ (progn
+ (unless (or itimer-process itimer-timer)
+ (itimer-driver-start))
+ ;; Check whether there is a bug to which the difference of
+ ;; the present time and the time when the itimer driver was
+ ;; woken up is subtracted from the initial itimer value.
+ (let* ((inhibit-quit t)
+ (ctime (current-time))
+ (itimer-timer-last-wakeup
+ (prog1
+ ctime
+ (setcar ctime (1- (car ctime)))))
+ (itimer-list nil)
+ (itimer (start-itimer "nnheader-run-at-time" 'ignore 5)))
+ (sleep-for 0.1) ;; Accept the timeout interrupt.
+ (prog1
+ (> (itimer-value itimer) 0)
+ (delete-itimer itimer))))
+ (error nil))
+ (defun nnheader-xmas-run-at-time (time repeat function &rest args)
+ "Emulating function run as `run-at-time'.
+TIME should be nil meaning now, or a number of seconds from now.
+Return an itimer object which can be used in either `delete-itimer'
+or `cancel-timer'."
+ (apply #'start-itimer "nnheader-run-at-time"
+ function (if time (max time 1e-9) 1e-9)
+ repeat nil t args))
+ (defun nnheader-xmas-run-at-time (time repeat function &rest args)
+ "Emulating function run as `run-at-time' in the right way.
+TIME should be nil meaning now, or a number of seconds from now.
+Return an itimer object which can be used in either `delete-itimer'
+or `cancel-timer'."
+ (let ((itimers (list nil)))
+ (setcar
+ itimers
+ (apply #'start-itimer "nnheader-run-at-time"
+ (lambda (itimers repeat function &rest args)
+ (let ((itimer (car itimers)))
+ (if repeat
+ (progn
+ (set-itimer-function
+ itimer
+ (lambda (itimer repeat function &rest args)
+ (set-itimer-restart itimer repeat)
+ (set-itimer-function itimer function)
+ (set-itimer-function-arguments itimer args)
+ (apply function args)))
+ (set-itimer-function-arguments
+ itimer
+ (append (list itimer repeat function) args)))
+ (set-itimer-function
+ itimer
+ (lambda (itimer function &rest args)
+ (delete-itimer itimer)
+ (apply function args)))
+ (set-itimer-function-arguments
+ itimer
+ (append (list itimer function) args)))))
+ 1e-9 (if time (max time 1e-9) 1e-9)
+ nil t itimers repeat function args)))))
+
+(defun nnheader-xmas-Y-or-n-p (prompt)
+ "Ask user a \"Y/n\" question. Return t if answer is neither \"n\", \"N\" nor \"C-g\"."
+ (if (should-use-dialog-box-p)
+ (yes-or-no-p-dialog-box prompt)
+ (let ((cursor-in-echo-area t)
+ (echo-keystrokes 0)
+ (inhibit-quit t)
+ event)
+ (message "%s(Y/n) " prompt)
+ (while (or (not (key-press-event-p (setq event (next-command-event))))
+ (not (or (eq (event-key event) 'escape)
+ (memq (event-to-character event)
+ '(?\ ?N ?Y ?\C-g ?\e ?\n ?\r ?n ?y))))))
+ (if (memq (event-key event) '(?\C-g ?N ?n))
+ (progn
+ (message "%s(Y/n) No" prompt)
+ nil)
+ (message "%s(Y/n) Yes" prompt)
+ t))))
-(fset 'nnheader-run-at-time 'nnheader-xmas-run-at-time)
-(fset 'nnheader-cancel-timer 'delete-itimer)
-(fset 'nnheader-cancel-function-timers 'ignore)
+(defalias 'nnheader-run-at-time 'nnheader-xmas-run-at-time)
+(defalias 'nnheader-cancel-timer 'delete-itimer)
+(defalias 'nnheader-cancel-function-timers 'ignore)
+(defalias 'nnheader-string-as-multibyte 'identity)
+(defalias 'nnheader-Y-or-n-p 'nnheader-xmas-Y-or-n-p)
(provide 'nnheaderxm)
-;;; nnheaderxm.el ends here.
+;;; nnheaderxm.el ends here
projects / elisp / gnus.git- / blobdiff