[bpt/emacs.git] / lisp / obsolete / lucid.el

;;; lucid.el --- emulate some Lucid Emacs functions

;; Copyright (C) 1993, 1995, 2001-2014 Free Software Foundation, Inc.

;; Maintainer: emacs-devel@gnu.org
;; Keywords: emulations
;; Obsolete-since: 23.2

;; 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 3 of the License, 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.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;;; Code:

;; XEmacs autoloads CL so we might as well make use of it.
(require 'cl)

(defalias 'current-time-seconds 'current-time)

(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 'facep)
(defalias 'get-face 'facep)
;; internal-try-face-font was removed from faces.el in rev 1.139, 1999/07/21.
;;;(defalias 'try-face-font 'internal-try-face-font)

(defalias 'exec-to-string 'shell-command-to-string)
\f

;; 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 'sorted)))
      (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)))
      (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))
\f
;; 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)

;; Local Variables:
;; byte-compile-warnings: (not cl-functions)
;; End:

;;; lucid.el ends here
Commit	Line	Data
60370d40	1	;;; lucid.el --- emulate some Lucid Emacs functions
b578f267	2
ba318903	3	;; Copyright (C) 1993, 1995, 2001-2014 Free Software Foundation, Inc.
6de6752c	4
34dc21db	5	;; Maintainer: emacs-devel@gnu.org
284b3043	6	;; Keywords: emulations
8f72f03c	7	;; Obsolete-since: 23.2
070c251e	8
6de6752c RS	9	;; This file is part of GNU Emacs.
6de6752c RS	10
d6cba7ae	11	;; GNU Emacs is free software: you can redistribute it and/or modify
6de6752c	12	;; it under the terms of the GNU General Public License as published by
d6cba7ae GM	13	;; the Free Software Foundation, either version 3 of the License, or
d6cba7ae GM	14	;; (at your option) any later version.
6de6752c RS	15
	16	;; GNU Emacs is distributed in the hope that it will be useful,
	17	;; but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	;; GNU General Public License for more details.
	20
	21	;; You should have received a copy of the GNU General Public License
d6cba7ae	22	;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
6de6752c	23
60370d40 PJ	24	;;; Commentary:
60370d40 PJ	25
b578f267	26	;;; Code:
6de6752c	27
5e2dfaa4 SM	28	;; XEmacs autoloads CL so we might as well make use of it.
5e2dfaa4 SM	29	(require 'cl)
330fba95	30
31e1d920	31	(defalias 'current-time-seconds 'current-time)
330fba95	32
3b787dc3 RS	33	(defun read-number (prompt &optional integers-only)
	34	"Read a number from the minibuffer.
	35	Keep reentering the minibuffer until we get suitable input.
	36	If optional argument INTEGERS-ONLY is non-nil, insist on an integer."
	37	(interactive)
	38	(let (success
	39	(number nil)
	40	(predicate (if integers-only 'integerp 'numberp)))
	41	(while (not success)
	42	(let ((input-string (read-string prompt)))
	43	(condition-case ()
	44	(setq number (read input-string))
	45	(error))
	46	(if (funcall predicate number)
	47	(setq success t)
	48	(let ((cursor-in-echo-area t))
	49	(message "Please type %s"
	50	(if integers-only "an integer" "a number"))
	51	(sit-for 1)))))
	52	number))
	53
7d18d35c JB	54	(defun real-path-name (name &optional default)
	55	(file-truename (expand-file-name name default)))
	56
	57	;; It's not clear what to return if the mouse is not in FRAME.
	58	(defun read-mouse-position (frame)
	59	(let ((pos (mouse-position)))
	60	(if (eq (car pos) frame)
	61	(cdr pos))))
	62
	63	(defun switch-to-other-buffer (arg)
	64	"Switch to the previous buffer.
	65	With a numeric arg N, switch to the Nth most recent buffer.
	66	With an arg of 0, buries the current buffer at the
	67	bottom of the buffer stack."
	68	(interactive "p")
	69	(if (eq arg 0)
	70	(bury-buffer (current-buffer)))
	71	(switch-to-buffer
	72	(if (<= arg 1) (other-buffer (current-buffer))
7c7daa22	73	(nth arg
e084483d JB	74	(apply 'nconc
	75	(mapcar
	76	(lambda (buf)
0b9be2e7	77	(if (= ?\ (string-to-char (buffer-name buf)))
e084483d	78	nil
0b9be2e7 JB	79	(list buf)))
0b9be2e7 JB	80	(buffer-list)))))))
e15765f5	81
efcc2791 SM	82	(defun device-class (&optional device)
	83	"Return the class (color behavior) of DEVICE.
	84	This will be one of 'color, 'grayscale, or 'mono.
	85	This function exists for compatibility with XEmacs."
	86	(cond
	87	((display-color-p device) 'color)
	88	((display-grayscale-p device) 'grayscale)
	89	(t 'mono)))
	90
3226d6ca GM	91	(defalias 'find-face 'facep)
3226d6ca GM	92	(defalias 'get-face 'facep)
9a73a6c9 GM	93	;; internal-try-face-font was removed from faces.el in rev 1.139, 1999/07/21.
9a73a6c9 GM	94	;;;(defalias 'try-face-font 'internal-try-face-font)
6b4268b0 RS	95
6b4268b0 RS	96	(defalias 'exec-to-string 'shell-command-to-string)
7d18d35c	97	\f
efcc2791 SM	98
	99	;; Buffer context
	100
	101	(defun buffer-syntactic-context (&optional buffer)
	102	"Syntactic context at point in BUFFER.
89a5038d	103	Either of `string', `comment' or nil.
efcc2791 SM	104	This is an XEmacs compatibility function."
	105	(with-current-buffer (or buffer (current-buffer))
	106	(let ((state (syntax-ppss (point))))
	107	(cond
	108	((nth 3 state) 'string)
	109	((nth 4 state) 'comment)))))
	110
	111
	112	(defun buffer-syntactic-context-depth (&optional buffer)
	113	"Syntactic parenthesis depth at point in BUFFER.
	114	This is an XEmacs compatibility function."
	115	(with-current-buffer (or buffer (current-buffer))
	116	(nth 0 (syntax-ppss (point)))))
	117
	118
	119	;; Extents
51566783 RS	120	(defun make-extent (beg end &optional buffer)
	121	(make-overlay beg end buffer))
	122
5e2dfaa4 SM	123	(defun extent-properties (extent) (overlay-properties extent))
5e2dfaa4 SM	124	(unless (fboundp 'extent-property) (defalias 'extent-property 'overlay-get))
c9411d2f RS	125
	126	(defun extent-at (pos &optional object property before)
	127	(with-current-buffer (or object (current-buffer))
20fa59a0	128	(let ((overlays (overlays-at pos 'sorted)))
c9411d2f RS	129	(when property
	130	(let (filtered)
	131	(while overlays
	132	(if (overlay-get (car overlays) property)
	133	(setq filtered (cons (car overlays) filtered)))
	134	(setq overlays (cdr overlays)))
	135	(setq overlays filtered)))
c9411d2f RS	136	(if before
	137	(nth 1 (memq before overlays))
	138	(car overlays)))))
	139
51566783	140	(defun set-extent-property (extent prop value)
c27d895b RS	141	;; Make sure that separate adjacent extents
	142	;; with the same mouse-face value
	143	;; do not run together as one extent.
	144	(and (eq prop 'mouse-face)
	145	(symbolp value)
	146	(setq value (list value)))
51566783 RS	147	(if (eq prop 'duplicable)
	148	(cond ((and value (not (overlay-get extent prop)))
	149	;; If becoming duplicable, copy all overlayprops to text props.
	150	(add-text-properties (overlay-start extent)
	151	(overlay-end extent)
	152	(overlay-properties extent)
	153	(overlay-buffer extent)))
	154	;; If becoming no longer duplicable, remove these text props.
	155	((and (not value) (overlay-get extent prop))
	156	(remove-text-properties (overlay-start extent)
	157	(overlay-end extent)
	158	(overlay-properties extent)
	159	(overlay-buffer extent))))
	160	;; If extent is already duplicable, put this property
	161	;; on the text as well as on the overlay.
	162	(if (overlay-get extent 'duplicable)
	163	(put-text-property (overlay-start extent)
	164	(overlay-end extent)
	165	prop value (overlay-buffer extent))))
	166	(overlay-put extent prop value))
	167
	168	(defun set-extent-face (extent face)
	169	(set-extent-property extent 'face face))
	170
5e2dfaa4 SM	171	(defun set-extent-end-glyph (extent glyph)
	172	(set-extent-property extent 'after-string glyph))
	173
51566783 RS	174	(defun delete-extent (extent)
	175	(set-extent-property extent 'duplicable nil)
	176	(delete-overlay extent))
	177	\f
7d18d35c JB	178	;; Support the Lucid names with `screen' instead of `frame'.
7d18d35c JB	179
31e1d920 ER	180	(defalias 'current-screen-configuration 'current-frame-configuration)
	181	(defalias 'delete-screen 'delete-frame)
	182	(defalias 'find-file-new-screen 'find-file-other-frame)
	183	(defalias 'find-file-read-only-new-screen 'find-file-read-only-other-frame)
	184	(defalias 'find-tag-new-screen 'find-tag-other-frame)
	185	;;(defalias 'focus-screen 'focus-frame)
	186	(defalias 'iconify-screen 'iconify-frame)
	187	(defalias 'mail-new-screen 'mail-other-frame)
	188	(defalias 'make-screen-invisible 'make-frame-invisible)
	189	(defalias 'make-screen-visible 'make-frame-visible)
	190	;; (defalias 'minibuffer-screen-list 'minibuffer-frame-list)
	191	(defalias 'modify-screen-parameters 'modify-frame-parameters)
	192	(defalias 'next-screen 'next-frame)
	193	;; (defalias 'next-multiscreen-window 'next-multiframe-window)
	194	;; (defalias 'previous-multiscreen-window 'previous-multiframe-window)
	195	;; (defalias 'redirect-screen-focus 'redirect-frame-focus)
	196	(defalias 'redraw-screen 'redraw-frame)
	197	;; (defalias 'screen-char-height 'frame-char-height)
	198	;; (defalias 'screen-char-width 'frame-char-width)
	199	;; (defalias 'screen-configuration-to-register 'frame-configuration-to-register)
	200	;; (defalias 'screen-focus 'frame-focus)
31e1d920 ER	201	(defalias 'screen-list 'frame-list)
	202	;; (defalias 'screen-live-p 'frame-live-p)
	203	(defalias 'screen-parameters 'frame-parameters)
	204	(defalias 'screen-pixel-height 'frame-pixel-height)
	205	(defalias 'screen-pixel-width 'frame-pixel-width)
	206	(defalias 'screen-root-window 'frame-root-window)
	207	(defalias 'screen-selected-window 'frame-selected-window)
	208	(defalias 'lower-screen 'lower-frame)
	209	(defalias 'raise-screen 'raise-frame)
	210	(defalias 'screen-visible-p 'frame-visible-p)
31e1d920 ER	211	(defalias 'screenp 'framep)
	212	(defalias 'select-screen 'select-frame)
	213	(defalias 'selected-screen 'selected-frame)
	214	;; (defalias 'set-screen-configuration 'set-frame-configuration)
	215	;; (defalias 'set-screen-height 'set-frame-height)
	216	(defalias 'set-screen-position 'set-frame-position)
	217	(defalias 'set-screen-size 'set-frame-size)
e084483d	218	;; (defalias 'set-screen-width 'set-frame-width)
31e1d920 ER	219	(defalias 'switch-to-buffer-new-screen 'switch-to-buffer-other-frame)
	220	;; (defalias 'unfocus-screen 'unfocus-frame)
	221	(defalias 'visible-screen-list 'visible-frame-list)
	222	(defalias 'window-screen 'window-frame)
	223	(defalias 'x-create-screen 'x-create-frame)
c731cd93	224	(defalias 'x-new-screen 'make-frame)
6de6752c	225
e084483d JB	226	(provide 'lucid)
e084483d JB	227
b3e4c911 GM	228	;; Local Variables:
	229	;; byte-compile-warnings: (not cl-functions)
	230	;; End:
	231
60370d40	232	;;; lucid.el ends here