X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/3e6580d01d4ce6f5942254a5136f3741d78bd998..b88a41d0064828aab6c75d7a8c6f543022fa5dd5:/lisp/emacs-lisp/lucid.el diff --git a/lisp/emacs-lisp/lucid.el b/lisp/emacs-lisp/lucid.el index 6412b0bc8f..80e5ef330d 100644 --- a/lisp/emacs-lisp/lucid.el +++ b/lisp/emacs-lisp/lucid.el @@ -1,63 +1,267 @@ -(defun add-timeout (secs function object &optional resignal) - (run-at-time secs resignal function object)) - -(defun disable-timeout (timeout) - (cancel-timer timeout)) - -(defun copy-tree (tree) - (if (consp tree) - (cons (copy-tree (car tree)) - (copy-tree (cdr tree))) - (if (vectorp tree) - (let ((new (copy-sequence tree)) - (i (1- (length new)))) - (while (>= i 0) - (aset new i (copy-tree (aref new i))) - (setq i (1- i))) - new) - tree))) - -(fset 'current-time-seconds 'current-time) - -(defun keymap-parent (keymap) - (let ((tail (cdr keymap))) - (while (and tail (not (eq (car tail) 'keymap))) - (setq tail (cdr tail))) - tail)) - -(defun set-keymap-parent (keymap new-parent) - (let ((tail (cdr keymap))) - (while (and tail (cdr tail) (not (eq (car (cdr tail)) 'keymap))) - (setq tail (cdr tail))) - (if tail - (setcdr tail new-parent)))) - -(defun remove-hook (hook-var function) - (if (boundp 'hook-var) - (set hook-var (delq function (symbol-value hook-var))))) - -(defun remprop (symbol prop) - (let ((plist (symbol-plist symbol))) - (while (eq (car plist) prop) - (setplist symbol (setq plist (cdr (cdr plist))))) - (while plist - (if (eq (nth 2 plist) prop) - (setcdr (cdr plist) (nthcdr 4 plist))) - (setq plist (cdr (cdr plist)))))) - -(defun map-keymap (function keymap) +;;; lucid.el --- emulate some Lucid Emacs functions + +;; Copyright (C) 1993, 1995, 2001 Free Software Foundation, Inc. + +;; Maintainer: FSF +;; Keywords: emulations + +;; This file is part of GNU Emacs. + +;; GNU Emacs is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation; either version 2, or (at your option) +;; any later version. + +;; GNU Emacs is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with GNU Emacs; see the file COPYING. If not, write to the +;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, +;; Boston, MA 02111-1307, USA. + +;;; Commentary: + +;;; Code: + +;; XEmacs autoloads CL so we might as well make use of it. +(require 'cl) + +(defalias 'current-time-seconds 'current-time) + +;; In case cl-map-keymap is an alias for map-keymap, avoid circular calls. +(fset 'cl-map-keymap (indirect-function 'cl-map-keymap)) + +(defun map-keymap (function keymap &optional sort-first) "Call FUNCTION for every binding in KEYMAP. -This includes bindings inherited from a parent keymap. +This does not include bindings inherited from a parent keymap. FUNCTION receives two arguments each time it is called: the character (more generally, the event type) that is bound, -and the binding it has." - (while (consp keymap) - (if (consp (car keymap)) - (funcall function (car (car keymap)) (cdr (car keymap))) - (if (vectorp (car keymap)) - (let ((i (length (car keymap))) - (vector (car keymap))) - (while (>= i 0) - (funcall function i (aref vector i)) - (setq i (1- i)))))) - (setq keymap (cdr keymap)))) +and the binding it has. + +Note that passing the event type directly to `define-key' does not work +in Emacs 19. We do not emulate that particular feature of Lucid Emacs. +If your code does that, modify it to make a vector containing the event +type that you get. That will work in both versions of Emacs." + (if sort-first + (let (list) + (cl-map-keymap (lambda (a b) (push (cons a b) list)) + keymap) + (setq list (sort list + (lambda (a b) + (setq a (car a) b (car b)) + (if (integerp a) + (if (integerp b) (< a b) + t) + (if (integerp b) t + (string< a b)))))) + (dolist (p list) + (funcall function (car p) (cdr p)))) + (cl-map-keymap function keymap))) + +(defun read-number (prompt &optional integers-only) + "Read a number from the minibuffer. +Keep reentering the minibuffer until we get suitable input. +If optional argument INTEGERS-ONLY is non-nil, insist on an integer." + (interactive) + (let (success + (number nil) + (predicate (if integers-only 'integerp 'numberp))) + (while (not success) + (let ((input-string (read-string prompt))) + (condition-case () + (setq number (read input-string)) + (error)) + (if (funcall predicate number) + (setq success t) + (let ((cursor-in-echo-area t)) + (message "Please type %s" + (if integers-only "an integer" "a number")) + (sit-for 1))))) + number)) + +(defun real-path-name (name &optional default) + (file-truename (expand-file-name name default))) + +;; It's not clear what to return if the mouse is not in FRAME. +(defun read-mouse-position (frame) + (let ((pos (mouse-position))) + (if (eq (car pos) frame) + (cdr pos)))) + +(defun switch-to-other-buffer (arg) + "Switch to the previous buffer. +With a numeric arg N, switch to the Nth most recent buffer. +With an arg of 0, buries the current buffer at the +bottom of the buffer stack." + (interactive "p") + (if (eq arg 0) + (bury-buffer (current-buffer))) + (switch-to-buffer + (if (<= arg 1) (other-buffer (current-buffer)) + (nth arg + (apply 'nconc + (mapcar + (lambda (buf) + (if (= ?\ (string-to-char (buffer-name buf))) + nil + (list buf))) + (buffer-list))))))) + +(defun device-class (&optional device) + "Return the class (color behavior) of DEVICE. +This will be one of 'color, 'grayscale, or 'mono. +This function exists for compatibility with XEmacs." + (cond + ((display-color-p device) 'color) + ((display-grayscale-p device) 'grayscale) + (t 'mono))) + +(defalias 'find-face 'internal-find-face) +(defalias 'get-face 'internal-get-face) +(defalias 'try-face-font 'internal-try-face-font) + +(defalias 'exec-to-string 'shell-command-to-string) + + +;; Buffer context + +(defun buffer-syntactic-context (&optional buffer) + "Syntactic context at point in BUFFER. +Either of `string', `comment' or nil. +This is an XEmacs compatibility function." + (with-current-buffer (or buffer (current-buffer)) + (let ((state (syntax-ppss (point)))) + (cond + ((nth 3 state) 'string) + ((nth 4 state) 'comment))))) + + +(defun buffer-syntactic-context-depth (&optional buffer) + "Syntactic parenthesis depth at point in BUFFER. +This is an XEmacs compatibility function." + (with-current-buffer (or buffer (current-buffer)) + (nth 0 (syntax-ppss (point))))) + + +;; Extents +(defun make-extent (beg end &optional buffer) + (make-overlay beg end buffer)) + +(defun extent-properties (extent) (overlay-properties extent)) +(unless (fboundp 'extent-property) (defalias 'extent-property 'overlay-get)) + +(defun extent-at (pos &optional object property before) + (with-current-buffer (or object (current-buffer)) + (let ((overlays (overlays-at pos))) + (when property + (let (filtered) + (while overlays + (if (overlay-get (car overlays) property) + (setq filtered (cons (car overlays) filtered))) + (setq overlays (cdr overlays))) + (setq overlays filtered))) + (setq overlays + (sort overlays + (function (lambda (o1 o2) + (let ((p1 (or (overlay-get o1 'priority) 0)) + (p2 (or (overlay-get o2 'priority) 0))) + (or (> p1 p2) + (and (= p1 p2) + (> (overlay-start o1) (overlay-start o2))))))))) + (if before + (nth 1 (memq before overlays)) + (car overlays))))) + +(defun set-extent-property (extent prop value) + ;; Make sure that separate adjacent extents + ;; with the same mouse-face value + ;; do not run together as one extent. + (and (eq prop 'mouse-face) + (symbolp value) + (setq value (list value))) + (if (eq prop 'duplicable) + (cond ((and value (not (overlay-get extent prop))) + ;; If becoming duplicable, copy all overlayprops to text props. + (add-text-properties (overlay-start extent) + (overlay-end extent) + (overlay-properties extent) + (overlay-buffer extent))) + ;; If becoming no longer duplicable, remove these text props. + ((and (not value) (overlay-get extent prop)) + (remove-text-properties (overlay-start extent) + (overlay-end extent) + (overlay-properties extent) + (overlay-buffer extent)))) + ;; If extent is already duplicable, put this property + ;; on the text as well as on the overlay. + (if (overlay-get extent 'duplicable) + (put-text-property (overlay-start extent) + (overlay-end extent) + prop value (overlay-buffer extent)))) + (overlay-put extent prop value)) + +(defun set-extent-face (extent face) + (set-extent-property extent 'face face)) + +(defun set-extent-end-glyph (extent glyph) + (set-extent-property extent 'after-string glyph)) + +(defun delete-extent (extent) + (set-extent-property extent 'duplicable nil) + (delete-overlay extent)) + +;; Support the Lucid names with `screen' instead of `frame'. + +(defalias 'current-screen-configuration 'current-frame-configuration) +(defalias 'delete-screen 'delete-frame) +(defalias 'find-file-new-screen 'find-file-other-frame) +(defalias 'find-file-read-only-new-screen 'find-file-read-only-other-frame) +(defalias 'find-tag-new-screen 'find-tag-other-frame) +;;(defalias 'focus-screen 'focus-frame) +(defalias 'iconify-screen 'iconify-frame) +(defalias 'mail-new-screen 'mail-other-frame) +(defalias 'make-screen-invisible 'make-frame-invisible) +(defalias 'make-screen-visible 'make-frame-visible) +;; (defalias 'minibuffer-screen-list 'minibuffer-frame-list) +(defalias 'modify-screen-parameters 'modify-frame-parameters) +(defalias 'next-screen 'next-frame) +;; (defalias 'next-multiscreen-window 'next-multiframe-window) +;; (defalias 'previous-multiscreen-window 'previous-multiframe-window) +;; (defalias 'redirect-screen-focus 'redirect-frame-focus) +(defalias 'redraw-screen 'redraw-frame) +;; (defalias 'screen-char-height 'frame-char-height) +;; (defalias 'screen-char-width 'frame-char-width) +;; (defalias 'screen-configuration-to-register 'frame-configuration-to-register) +;; (defalias 'screen-focus 'frame-focus) +(defalias 'screen-list 'frame-list) +;; (defalias 'screen-live-p 'frame-live-p) +(defalias 'screen-parameters 'frame-parameters) +(defalias 'screen-pixel-height 'frame-pixel-height) +(defalias 'screen-pixel-width 'frame-pixel-width) +(defalias 'screen-root-window 'frame-root-window) +(defalias 'screen-selected-window 'frame-selected-window) +(defalias 'lower-screen 'lower-frame) +(defalias 'raise-screen 'raise-frame) +(defalias 'screen-visible-p 'frame-visible-p) +(defalias 'screenp 'framep) +(defalias 'select-screen 'select-frame) +(defalias 'selected-screen 'selected-frame) +;; (defalias 'set-screen-configuration 'set-frame-configuration) +;; (defalias 'set-screen-height 'set-frame-height) +(defalias 'set-screen-position 'set-frame-position) +(defalias 'set-screen-size 'set-frame-size) +;; (defalias 'set-screen-width 'set-frame-width) +(defalias 'switch-to-buffer-new-screen 'switch-to-buffer-other-frame) +;; (defalias 'unfocus-screen 'unfocus-frame) +(defalias 'visible-screen-list 'visible-frame-list) +(defalias 'window-screen 'window-frame) +(defalias 'x-create-screen 'x-create-frame) +(defalias 'x-new-screen 'make-frame) + +(provide 'lucid) + +;;; arch-tag: 80f9ab46-0b36-4151-86ed-3edb6d449c9e +;;; lucid.el ends here