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6594deb0 ER |
1 | ;;; mlsupport.el --- run-time support for mocklisp code. |
2 | ||
58142744 ER |
3 | ;; Copyright (C) 1985 Free Software Foundation, Inc. |
4 | ||
e5167999 | 5 | ;; Maintainer: FSF |
fd7fa35a | 6 | ;; Keywords: extensions |
e5167999 | 7 | |
0d20f9a0 JB |
8 | ;; This file is part of GNU Emacs. |
9 | ||
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 | |
e5167999 | 12 | ;; the Free Software Foundation; either version 2, or (at your option) |
0d20f9a0 JB |
13 | ;; any later version. |
14 | ||
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. | |
19 | ||
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 | |
22 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | ||
edbd2f74 ER |
24 | ;;; Commentary: |
25 | ||
26 | ;; This package provides equivalents of certain primitives from Gosling | |
27 | ;; Emacs (including the commercial UniPress versions). These have an | |
28 | ;; ml- prefix to distinguish them from native GNU Emacs functions with | |
29 | ;; similar names. The oackage mlconvert.el translates Mocklisp code | |
30 | ;; to use these names. | |
31 | ||
e5167999 | 32 | ;;; Code: |
0d20f9a0 | 33 | |
0d20f9a0 JB |
34 | (defmacro ml-defun (&rest defs) |
35 | (list 'ml-defun-1 (list 'quote defs))) | |
36 | ||
37 | (defun ml-defun-1 (args) | |
38 | (while args | |
39 | (fset (car (car args)) (cons 'mocklisp (cdr (car args)))) | |
40 | (setq args (cdr args)))) | |
41 | ||
42 | (defmacro declare-buffer-specific (&rest vars) | |
43 | (cons 'progn (mapcar (function (lambda (var) (list 'make-variable-buffer-local (list 'quote var)))) vars))) | |
44 | ||
45 | (defun ml-set-default (varname value) | |
46 | (set-default (intern varname) value)) | |
47 | ||
48 | ; Lossage: must make various things default missing args to the prefix arg | |
49 | ; Alternatively, must make provide-prefix-argument do something hairy. | |
50 | ||
51 | (defun >> (val count) (lsh val (- count))) | |
52 | (defun novalue () nil) | |
53 | ||
54 | (defun ml-not (arg) (if (zerop arg) 1 0)) | |
55 | ||
56 | (defun provide-prefix-arg (arg form) | |
57 | (funcall (car form) arg)) | |
58 | ||
59 | (defun define-keymap (name) | |
60 | (fset (intern name) (make-keymap))) | |
61 | ||
b34429f8 RS |
62 | ;; Make it work to use ml-use-...-map on "esc" and such. |
63 | (fset 'esc-map esc-map) | |
64 | (fset 'ctl-x-map ctl-x-map) | |
65 | ||
0d20f9a0 JB |
66 | (defun ml-use-local-map (name) |
67 | (use-local-map (intern (concat name "-map")))) | |
68 | ||
69 | (defun ml-use-global-map (name) | |
70 | (use-global-map (intern (concat name "-map")))) | |
71 | ||
72 | (defun local-bind-to-key (name key) | |
73 | (or (current-local-map) | |
74 | (use-local-map (make-keymap))) | |
75 | (define-key (current-local-map) | |
76 | (if (integerp key) | |
77 | (if (>= key 128) | |
78 | (concat (char-to-string meta-prefix-char) | |
79 | (char-to-string (- key 128))) | |
80 | (char-to-string key)) | |
81 | key) | |
82 | (intern name))) | |
83 | ||
84 | (defun bind-to-key (name key) | |
85 | (define-key global-map (if (integerp key) (char-to-string key) key) | |
86 | (intern name))) | |
87 | ||
88 | (defun ml-autoload (name file) | |
89 | (autoload (intern name) file)) | |
90 | ||
91 | (defun ml-define-string-macro (name defn) | |
92 | (fset (intern name) defn)) | |
93 | ||
94 | (defun push-back-character (char) | |
72766144 | 95 | (setq unread-command-events (list char))) |
0d20f9a0 JB |
96 | |
97 | (defun to-col (column) | |
98 | (indent-to column 0)) | |
99 | ||
100 | (defmacro is-bound (&rest syms) | |
101 | (cons 'and (mapcar (function (lambda (sym) (list 'boundp (list 'quote sym)))) syms))) | |
102 | ||
103 | (defmacro declare-global (&rest syms) | |
104 | (cons 'progn (mapcar (function (lambda (sym) (list 'defvar sym nil))) syms))) | |
105 | ||
106 | (defmacro error-occurred (&rest body) | |
107 | (list 'condition-case nil (cons 'progn (append body '(nil))) '(error t))) | |
108 | ||
109 | (defun return-prefix-argument (value) | |
110 | (setq prefix-arg value)) | |
111 | ||
112 | (defun ml-prefix-argument () | |
113 | (if (null current-prefix-arg) 1 | |
114 | (if (listp current-prefix-arg) (car current-prefix-arg) | |
115 | (if (eq current-prefix-arg '-) -1 | |
116 | current-prefix-arg)))) | |
117 | ||
118 | (defun ml-print (varname) | |
119 | (interactive "vPrint variable: ") | |
120 | (if (boundp varname) | |
121 | (message "%s => %s" (symbol-name varname) (symbol-value varname)) | |
122 | (message "%s has no value" (symbol-name varname)))) | |
123 | ||
124 | (defun ml-set (str val) (set (intern str) val)) | |
125 | ||
126 | (defun ml-message (&rest args) (message "%s" (apply 'concat args))) | |
127 | ||
128 | (defun kill-to-end-of-line () | |
129 | (ml-prefix-argument-loop | |
130 | (if (eolp) | |
131 | (kill-region (point) (1+ (point))) | |
132 | (kill-region (point) (if (search-forward ?\n nil t) | |
133 | (1- (point)) (point-max)))))) | |
134 | ||
135 | (defun set-auto-fill-hook (arg) | |
136 | (setq auto-fill-function (intern arg))) | |
137 | ||
138 | (defun auto-execute (function pattern) | |
139 | (if (/= (aref pattern 0) ?*) | |
140 | (error "Only patterns starting with * supported in auto-execute")) | |
141 | (setq auto-mode-alist (cons (cons (concat "\\." (substring pattern 1) | |
ac6ff3ed | 142 | "\\'") |
0d20f9a0 JB |
143 | function) |
144 | auto-mode-alist))) | |
145 | ||
146 | (defun move-to-comment-column () | |
147 | (indent-to comment-column)) | |
148 | ||
149 | (defun erase-region () | |
150 | (delete-region (point) (mark))) | |
151 | ||
152 | (defun delete-region-to-buffer (bufname) | |
153 | (copy-to-buffer bufname (point) (mark)) | |
154 | (delete-region (point) (mark))) | |
155 | ||
156 | (defun copy-region-to-buffer (bufname) | |
157 | (copy-to-buffer bufname (point) (mark))) | |
158 | ||
159 | (defun append-region-to-buffer (bufname) | |
160 | (append-to-buffer bufname (point) (mark))) | |
161 | ||
162 | (defun prepend-region-to-buffer (bufname) | |
163 | (prepend-to-buffer bufname (point) (mark))) | |
164 | ||
165 | (defun delete-next-character () | |
166 | (delete-char (ml-prefix-argument))) | |
167 | ||
168 | (defun delete-next-word () | |
169 | (delete-region (point) (progn (forward-word (ml-prefix-argument)) (point)))) | |
170 | ||
171 | (defun delete-previous-word () | |
172 | (delete-region (point) (progn (backward-word (ml-prefix-argument)) (point)))) | |
173 | ||
174 | (defun delete-previous-character () | |
175 | (delete-backward-char (ml-prefix-argument))) | |
176 | ||
177 | (defun forward-character () | |
178 | (forward-char (ml-prefix-argument))) | |
179 | ||
180 | (defun backward-character () | |
181 | (backward-char (ml-prefix-argument))) | |
182 | ||
183 | (defun ml-newline () | |
184 | (newline (ml-prefix-argument))) | |
185 | ||
186 | (defun ml-next-line () | |
187 | (next-line (ml-prefix-argument))) | |
188 | ||
189 | (defun ml-previous-line () | |
190 | (previous-line (ml-prefix-argument))) | |
191 | ||
192 | (defun delete-to-kill-buffer () | |
193 | (kill-region (point) (mark))) | |
194 | ||
195 | (defun narrow-region () | |
196 | (narrow-to-region (point) (mark))) | |
197 | ||
198 | (defun ml-newline-and-indent () | |
199 | (let ((column (current-indentation))) | |
200 | (newline (ml-prefix-argument)) | |
201 | (indent-to column))) | |
202 | ||
203 | (defun newline-and-backup () | |
204 | (open-line (ml-prefix-argument))) | |
205 | ||
206 | (defun quote-char () | |
207 | (quoted-insert (ml-prefix-argument))) | |
208 | ||
209 | (defun ml-current-column () | |
210 | (1+ (current-column))) | |
211 | ||
212 | (defun ml-current-indent () | |
213 | (1+ (current-indentation))) | |
214 | ||
215 | (defun region-around-match (&optional n) | |
216 | (set-mark (match-beginning n)) | |
217 | (goto-char (match-end n))) | |
218 | ||
219 | (defun region-to-string () | |
220 | (buffer-substring (min (point) (mark)) (max (point) (mark)))) | |
221 | ||
222 | (defun use-abbrev-table (name) | |
223 | (let ((symbol (intern (concat name "-abbrev-table")))) | |
224 | (or (boundp symbol) | |
225 | (define-abbrev-table symbol nil)) | |
226 | (symbol-value symbol))) | |
227 | ||
228 | (defun define-hooked-local-abbrev (name exp hook) | |
229 | (define-local-abbrev name exp (intern hook))) | |
230 | ||
231 | (defun define-hooked-global-abbrev (name exp hook) | |
232 | (define-global-abbrev name exp (intern hook))) | |
233 | ||
234 | (defun case-word-lower () | |
235 | (ml-casify-word 'downcase-region)) | |
236 | ||
237 | (defun case-word-upper () | |
238 | (ml-casify-word 'upcase-region)) | |
239 | ||
240 | (defun case-word-capitalize () | |
241 | (ml-casify-word 'capitalize-region)) | |
242 | ||
243 | (defun ml-casify-word (fun) | |
244 | (save-excursion | |
245 | (forward-char 1) | |
246 | (forward-word -1) | |
247 | (funcall fun (point) | |
248 | (progn (forward-word (ml-prefix-argument)) | |
249 | (point))))) | |
250 | ||
251 | (defun case-region-lower () | |
252 | (downcase-region (point) (mark))) | |
253 | ||
254 | (defun case-region-upper () | |
255 | (upcase-region (point) (mark))) | |
256 | ||
257 | (defun case-region-capitalize () | |
258 | (capitalize-region (point) (mark))) | |
259 | \f | |
260 | (defvar saved-command-line-args nil) | |
261 | ||
262 | (defun argc () | |
263 | (or saved-command-line-args | |
264 | (setq saved-command-line-args command-line-args | |
265 | command-line-args ())) | |
266 | (length command-line-args)) | |
267 | ||
268 | (defun argv (i) | |
269 | (or saved-command-line-args | |
270 | (setq saved-command-line-args command-line-args | |
271 | command-line-args ())) | |
272 | (nth i saved-command-line-args)) | |
273 | ||
274 | (defun invisible-argc () | |
275 | (length (or saved-command-line-args | |
276 | command-line-args))) | |
277 | ||
278 | (defun invisible-argv (i) | |
279 | (nth i (or saved-command-line-args | |
280 | command-line-args))) | |
281 | ||
282 | (defun exit-emacs () | |
283 | (interactive) | |
284 | (condition-case () | |
285 | (exit-recursive-edit) | |
286 | (error (kill-emacs)))) | |
287 | \f | |
288 | ;; Lisp function buffer-size returns total including invisible; | |
289 | ;; mocklisp wants just visible. | |
290 | (defun ml-buffer-size () | |
291 | (- (point-max) (point-min))) | |
292 | ||
293 | (defun previous-command () | |
294 | last-command) | |
295 | ||
296 | (defun beginning-of-window () | |
297 | (goto-char (window-start))) | |
298 | ||
299 | (defun end-of-window () | |
300 | (goto-char (window-start)) | |
301 | (vertical-motion (- (window-height) 2))) | |
302 | \f | |
303 | (defun ml-search-forward (string) | |
304 | (search-forward string nil nil (ml-prefix-argument))) | |
305 | ||
306 | (defun ml-re-search-forward (string) | |
307 | (re-search-forward string nil nil (ml-prefix-argument))) | |
308 | ||
309 | (defun ml-search-backward (string) | |
310 | (search-backward string nil nil (ml-prefix-argument))) | |
311 | ||
312 | (defun ml-re-search-backward (string) | |
313 | (re-search-backward string nil nil (ml-prefix-argument))) | |
314 | ||
315 | (defvar use-users-shell 1 | |
316 | "Mocklisp compatibility variable; 1 means use shell from SHELL env var. | |
317 | 0 means use /bin/sh.") | |
318 | ||
319 | (defvar use-csh-option-f 1 | |
320 | "Mocklisp compatibility variable; 1 means pass -f when calling csh.") | |
321 | ||
322 | (defun filter-region (command) | |
323 | (let ((shell (if (/= use-users-shell 0) shell-file-name "/bin/sh")) | |
324 | (csh (equal (file-name-nondirectory shell) "csh"))) | |
325 | (call-process-region (point) (mark) shell t t nil | |
326 | (if (and csh use-csh-option-f) "-cf" "-c") | |
327 | (concat "exec " command)))) | |
328 | ||
329 | (defun execute-monitor-command (command) | |
330 | (let ((shell (if (/= use-users-shell 0) shell-file-name "/bin/sh")) | |
331 | (csh (equal (file-name-nondirectory shell) "csh"))) | |
332 | (call-process shell nil t t | |
333 | (if (and csh use-csh-option-f) "-cf" "-c") | |
334 | (concat "exec " command)))) | |
335 | \f | |
336 | (defun use-syntax-table (name) | |
337 | (set-syntax-table (symbol-value (intern (concat name "-syntax-table"))))) | |
338 | ||
339 | (defun line-to-top-of-window () | |
340 | (recenter (1- (ml-prefix-argument)))) | |
341 | ||
342 | (defun ml-previous-page (&optional arg) | |
343 | (let ((count (or arg (ml-prefix-argument)))) | |
344 | (while (> count 0) | |
345 | (scroll-down nil) | |
346 | (setq count (1- count))) | |
347 | (while (< count 0) | |
348 | (scroll-up nil) | |
349 | (setq count (1+ count))))) | |
350 | ||
351 | (defun ml-next-page () | |
352 | (previous-page (- (ml-prefix-argument)))) | |
353 | ||
354 | (defun page-next-window (&optional arg) | |
355 | (let ((count (or arg (ml-prefix-argument)))) | |
356 | (while (> count 0) | |
357 | (scroll-other-window nil) | |
358 | (setq count (1- count))) | |
359 | (while (< count 0) | |
360 | (scroll-other-window '-) | |
361 | (setq count (1+ count))))) | |
362 | ||
363 | (defun ml-next-window () | |
364 | (select-window (next-window))) | |
365 | ||
366 | (defun ml-previous-window () | |
367 | (select-window (previous-window))) | |
368 | ||
369 | (defun scroll-one-line-up () | |
370 | (scroll-up (ml-prefix-argument))) | |
371 | ||
372 | (defun scroll-one-line-down () | |
373 | (scroll-down (ml-prefix-argument))) | |
374 | ||
375 | (defun split-current-window () | |
376 | (split-window (selected-window))) | |
377 | ||
378 | (defun last-key-struck () last-command-char) | |
379 | ||
380 | (defun execute-mlisp-line (string) | |
381 | (eval (read string))) | |
382 | ||
383 | (defun move-dot-to-x-y (x y) | |
384 | (goto-char (window-start (selected-window))) | |
385 | (vertical-motion (1- y)) | |
386 | (move-to-column (1- x))) | |
387 | ||
388 | (defun ml-modify-syntax-entry (string) | |
389 | (let ((i 5) | |
390 | (len (length string)) | |
391 | (datastring (substring string 0 2))) | |
392 | (if (= (aref string 0) ?\-) | |
393 | (aset datastring 0 ?\ )) | |
394 | (if (= (aref string 2) ?\{) | |
395 | (if (= (aref string 4) ?\ ) | |
396 | (aset datastring 0 ?\<) | |
397 | (error "Two-char comment delimiter: use modify-syntax-entry directly"))) | |
398 | (if (= (aref string 3) ?\}) | |
399 | (if (= (aref string 4) ?\ ) | |
400 | (aset datastring 0 ?\>) | |
401 | (error "Two-char comment delimiter: use modify-syntax-entry directly"))) | |
402 | (while (< i len) | |
403 | (modify-syntax-entry (aref string i) datastring) | |
404 | (setq i (1+ i)) | |
405 | (if (and (< i len) | |
406 | (= (aref string i) ?\-)) | |
407 | (let ((c (aref string (1- i))) | |
408 | (lim (aref string (1+ i)))) | |
409 | (while (<= c lim) | |
410 | (modify-syntax-entry c datastring) | |
411 | (setq c (1+ c))) | |
412 | (setq i (+ 2 i))))))) | |
413 | \f | |
414 | ||
415 | ||
416 | (defun ml-substr (string from to) | |
417 | (let ((length (length string))) | |
418 | (if (< from 0) (setq from (+ from length))) | |
419 | (if (< to 0) (setq to (+ to length))) | |
420 | (substring string from (+ from to)))) | |
49116ac0 JB |
421 | |
422 | (provide 'mlsupport) | |
423 | ||
6594deb0 | 424 | ;;; mlsupport.el ends here |