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1 ;;; calc-yank.el --- kill-ring functionality for Calc
2
3 ;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004,
4 ;; 2005, 2006 Free Software Foundation, Inc.
5
6 ;; Author: David Gillespie <daveg@synaptics.com>
7 ;; Maintainer: Jay Belanger <belanger@truman.edu>
8
9 ;; This file is part of GNU Emacs.
10
11 ;; GNU Emacs is distributed in the hope that it will be useful,
12 ;; but WITHOUT ANY WARRANTY. No author or distributor
13 ;; accepts responsibility to anyone for the consequences of using it
14 ;; or for whether it serves any particular purpose or works at all,
15 ;; unless he says so in writing. Refer to the GNU Emacs General Public
16 ;; License for full details.
17
18 ;; Everyone is granted permission to copy, modify and redistribute
19 ;; GNU Emacs, but only under the conditions described in the
20 ;; GNU Emacs General Public License. A copy of this license is
21 ;; supposed to have been given to you along with GNU Emacs so you
22 ;; can know your rights and responsibilities. It should be in a
23 ;; file named COPYING. Among other things, the copyright notice
24 ;; and this notice must be preserved on all copies.
25
26 ;;; Commentary:
27
28 ;;; Code:
29
30 ;; This file is autoloaded from calc-ext.el.
31
32 (require 'calc-ext)
33 (require 'calc-macs)
34
35 ;;; Kill ring commands.
36
37 (defun calc-kill (nn &optional no-delete)
38 (interactive "P")
39 (if (eq major-mode 'calc-mode)
40 (calc-wrapper
41 (calc-force-refresh)
42 (calc-set-command-flag 'no-align)
43 (let ((num (max (calc-locate-cursor-element (point)) 1))
44 (n (prefix-numeric-value nn)))
45 (if (< n 0)
46 (progn
47 (if (eobp)
48 (setq num (1- num)))
49 (setq num (- num n)
50 n (- n))))
51 (let ((stuff (calc-top-list n (- num n -1))))
52 (calc-cursor-stack-index num)
53 (let ((first (point)))
54 (calc-cursor-stack-index (- num n))
55 (if (null nn)
56 (backward-char 1)) ; don't include newline for raw C-k
57 (copy-region-as-kill first (point))
58 (if (not no-delete)
59 (calc-pop-stack n (- num n -1))))
60 (setq calc-last-kill (cons (car kill-ring) stuff)))))
61 (kill-line nn)))
62
63 (defun calc-force-refresh ()
64 (if (or calc-executing-macro calc-display-dirty)
65 (let ((calc-executing-macro nil))
66 (calc-refresh))))
67
68 (defun calc-locate-cursor-element (pt)
69 (save-excursion
70 (goto-char (point-max))
71 (calc-locate-cursor-scan (- calc-stack-top) calc-stack pt)))
72
73 (defun calc-locate-cursor-scan (n stack pt)
74 (if (or (<= (point) pt)
75 (null stack))
76 n
77 (forward-line (- (nth 1 (car stack))))
78 (calc-locate-cursor-scan (1+ n) (cdr stack) pt)))
79
80 (defun calc-kill-region (top bot &optional no-delete)
81 (interactive "r")
82 (if (eq major-mode 'calc-mode)
83 (calc-wrapper
84 (calc-force-refresh)
85 (calc-set-command-flag 'no-align)
86 (let* ((top-num (calc-locate-cursor-element top))
87 (bot-num (calc-locate-cursor-element (1- bot)))
88 (num (- top-num bot-num -1)))
89 (copy-region-as-kill top bot)
90 (setq calc-last-kill (cons (car kill-ring)
91 (calc-top-list num bot-num)))
92 (if (not no-delete)
93 (calc-pop-stack num bot-num))))
94 (if no-delete
95 (copy-region-as-kill top bot)
96 (kill-region top bot))))
97
98 (defun calc-copy-as-kill (n)
99 (interactive "P")
100 (calc-kill n t))
101
102 (defun calc-copy-region-as-kill (top bot)
103 (interactive "r")
104 (calc-kill-region top bot t))
105
106 ;;; This function uses calc-last-kill if possible to get an exact result,
107 ;;; otherwise it just parses the yanked string.
108 ;;; Modified to use Emacs 19 extended concept of kill-ring. -- daveg 12/15/96
109 (defun calc-yank ()
110 (interactive)
111 (calc-wrapper
112 (calc-pop-push-record-list
113 0 "yank"
114 (let ((thing (if (fboundp 'current-kill)
115 (current-kill 0 t)
116 (car kill-ring-yank-pointer))))
117 (if (eq (car-safe calc-last-kill) thing)
118 (cdr calc-last-kill)
119 (if (stringp thing)
120 (let ((val (math-read-exprs (calc-clean-newlines thing))))
121 (if (eq (car-safe val) 'error)
122 (progn
123 (setq val (math-read-exprs thing))
124 (if (eq (car-safe val) 'error)
125 (error "Bad format in yanked data")
126 val))
127 val))))))))
128
129 (defun calc-clean-newlines (s)
130 (cond
131
132 ;; Omit leading/trailing whitespace
133 ((or (string-match "\\`[ \n\r]+\\([^\001]*\\)\\'" s)
134 (string-match "\\`\\([^\001]*\\)[ \n\r]+\\'" s))
135 (calc-clean-newlines (math-match-substring s 1)))
136
137 ;; Convert newlines to commas
138 ((string-match "\\`\\(.*\\)[\n\r]+\\([^\001]*\\)\\'" s)
139 (calc-clean-newlines (concat (math-match-substring s 1) ","
140 (math-match-substring s 2))))
141
142 (t s)))
143
144
145 (defun calc-do-grab-region (top bot arg)
146 (when (memq major-mode '(calc-mode calc-trail-mode))
147 (error "This command works only in a regular text buffer"))
148 (let* ((from-buffer (current-buffer))
149 (calc-was-started (get-buffer-window "*Calculator*"))
150 (single nil)
151 data vals pos)
152 (if arg
153 (if (consp arg)
154 (setq single t)
155 (setq arg (prefix-numeric-value arg))
156 (if (= arg 0)
157 (save-excursion
158 (beginning-of-line)
159 (setq top (point))
160 (end-of-line)
161 (setq bot (point)))
162 (save-excursion
163 (setq top (point))
164 (forward-line arg)
165 (if (> arg 0)
166 (setq bot (point))
167 (setq bot top
168 top (point)))))))
169 (setq data (buffer-substring top bot))
170 (calc)
171 (if single
172 (setq vals (math-read-expr data))
173 (setq vals (math-read-expr (concat "[" data "]")))
174 (and (eq (car-safe vals) 'vec)
175 (= (length vals) 2)
176 (eq (car-safe (nth 1 vals)) 'vec)
177 (setq vals (nth 1 vals))))
178 (if (eq (car-safe vals) 'error)
179 (progn
180 (if calc-was-started
181 (pop-to-buffer from-buffer)
182 (calc-quit t)
183 (switch-to-buffer from-buffer))
184 (goto-char top)
185 (forward-char (+ (nth 1 vals) (if single 0 1)))
186 (error (nth 2 vals))))
187 (calc-slow-wrapper
188 (calc-enter-result 0 "grab" vals))))
189
190
191 (defun calc-do-grab-rectangle (top bot arg &optional reduce)
192 (and (memq major-mode '(calc-mode calc-trail-mode))
193 (error "This command works only in a regular text buffer"))
194 (let* ((col1 (save-excursion (goto-char top) (current-column)))
195 (col2 (save-excursion (goto-char bot) (current-column)))
196 (from-buffer (current-buffer))
197 (calc-was-started (get-buffer-window "*Calculator*"))
198 data mat vals lnum pt pos)
199 (if (= col1 col2)
200 (save-excursion
201 (unless (= col1 0)
202 (error "Point and mark must be at beginning of line, or define a rectangle"))
203 (goto-char top)
204 (while (< (point) bot)
205 (setq pt (point))
206 (forward-line 1)
207 (setq data (cons (buffer-substring pt (1- (point))) data)))
208 (setq data (nreverse data)))
209 (setq data (extract-rectangle top bot)))
210 (calc)
211 (setq mat (list 'vec)
212 lnum 0)
213 (when arg
214 (setq arg (if (consp arg) 0 (prefix-numeric-value arg))))
215 (while data
216 (if (natnump arg)
217 (progn
218 (if (= arg 0)
219 (setq arg 1000000))
220 (setq pos 0
221 vals (list 'vec))
222 (let ((w (length (car data)))
223 j v)
224 (while (< pos w)
225 (setq j (+ pos arg)
226 v (if (>= j w)
227 (math-read-expr (substring (car data) pos))
228 (math-read-expr (substring (car data) pos j))))
229 (if (eq (car-safe v) 'error)
230 (setq vals v w 0)
231 (setq vals (nconc vals (list v))
232 pos j)))))
233 (if (string-match "\\` *-?[0-9][0-9]?[0-9]?[0-9]?[0-9]?[0-9]? *\\'"
234 (car data))
235 (setq vals (list 'vec (string-to-number (car data))))
236 (if (and (null arg)
237 (string-match "[[{][^][{}]*[]}]" (car data)))
238 (setq pos (match-beginning 0)
239 vals (math-read-expr (math-match-substring (car data) 0)))
240 (let ((s (if (string-match
241 "\\`\\([0-9]+:[ \t]\\)?\\(.*[^, \t]\\)[, \t]*\\'"
242 (car data))
243 (math-match-substring (car data) 2)
244 (car data))))
245 (setq pos -1
246 vals (math-read-expr (concat "[" s "]")))
247 (if (eq (car-safe vals) 'error)
248 (let ((v2 (math-read-expr s)))
249 (unless (eq (car-safe v2) 'error)
250 (setq vals (list 'vec v2)))))))))
251 (if (eq (car-safe vals) 'error)
252 (progn
253 (if calc-was-started
254 (pop-to-buffer from-buffer)
255 (calc-quit t)
256 (switch-to-buffer from-buffer))
257 (goto-char top)
258 (forward-line lnum)
259 (forward-char (+ (nth 1 vals) (min col1 col2) pos))
260 (error (nth 2 vals))))
261 (unless (equal vals '(vec))
262 (setq mat (cons vals mat)))
263 (setq data (cdr data)
264 lnum (1+ lnum)))
265 (calc-slow-wrapper
266 (if reduce
267 (calc-enter-result 0 "grb+" (list reduce '(var add var-add)
268 (nreverse mat)))
269 (calc-enter-result 0 "grab" (nreverse mat))))))
270
271
272 (defun calc-copy-to-buffer (nn)
273 "Copy the top of stack into an editing buffer."
274 (interactive "P")
275 (let ((thebuf (and (not (memq major-mode '(calc-mode calc-trail-mode)))
276 (current-buffer)))
277 (movept nil)
278 oldbuf newbuf)
279 (calc-wrapper
280 (save-excursion
281 (calc-force-refresh)
282 (let ((n (prefix-numeric-value nn))
283 (eat-lnums calc-line-numbering)
284 (big-offset (if (eq calc-language 'big) 1 0))
285 top bot)
286 (setq oldbuf (current-buffer)
287 newbuf (or thebuf
288 (calc-find-writable-buffer (buffer-list) 0)
289 (calc-find-writable-buffer (buffer-list) 1)
290 (error "No other buffer")))
291 (cond ((and (or (null nn)
292 (consp nn))
293 (= (calc-substack-height 0)
294 (- (1- (calc-substack-height 1)) big-offset)))
295 (calc-cursor-stack-index 1)
296 (if (looking-at
297 (if calc-line-numbering "[0-9]+: *[^ \n]" " *[^ \n]"))
298 (goto-char (1- (match-end 0))))
299 (setq eat-lnums nil
300 top (point))
301 (calc-cursor-stack-index 0)
302 (setq bot (- (1- (point)) big-offset)))
303 ((> n 0)
304 (calc-cursor-stack-index n)
305 (setq top (point))
306 (calc-cursor-stack-index 0)
307 (setq bot (- (point) big-offset)))
308 ((< n 0)
309 (calc-cursor-stack-index (- n))
310 (setq top (point))
311 (calc-cursor-stack-index (1- (- n)))
312 (setq bot (point)))
313 (t
314 (goto-char (point-min))
315 (forward-line 1)
316 (setq top (point))
317 (calc-cursor-stack-index 0)
318 (setq bot (point))))
319 (save-excursion
320 (set-buffer newbuf)
321 (if (consp nn)
322 (kill-region (region-beginning) (region-end)))
323 (push-mark (point) t)
324 (if (and overwrite-mode (not (consp nn)))
325 (calc-overwrite-string (save-excursion
326 (set-buffer oldbuf)
327 (buffer-substring top bot))
328 eat-lnums)
329 (or (bolp) (setq eat-lnums nil))
330 (insert-buffer-substring oldbuf top bot)
331 (and eat-lnums
332 (let ((n 1))
333 (while (and (> (point) (mark))
334 (progn
335 (forward-line -1)
336 (>= (point) (mark))))
337 (delete-char 4)
338 (setq n (1+ n)))
339 (forward-line n))))
340 (when thebuf
341 (setq movept (point)))
342 (when (get-buffer-window (current-buffer))
343 (set-window-point (get-buffer-window (current-buffer))
344 (point)))))))
345 (when movept
346 (goto-char movept))
347 (when (and (consp nn)
348 (not thebuf))
349 (calc-quit t)
350 (switch-to-buffer newbuf))))
351
352 (defun calc-overwrite-string (str eat-lnums)
353 (when (string-match "\n\\'" str)
354 (setq str (substring str 0 -1)))
355 (when eat-lnums
356 (setq str (substring str 4)))
357 (if (and (string-match "\\`[-+]?[0-9.]+\\(e-?[0-9]+\\)?\\'" str)
358 (looking-at "[-+]?[0-9.]+\\(e-?[0-9]+\\)?"))
359 (progn
360 (delete-region (point) (match-end 0))
361 (insert str))
362 (let ((i 0))
363 (while (< i (length str))
364 (if (= (setq last-command-char (aref str i)) ?\n)
365 (or (= i (1- (length str)))
366 (let ((pt (point)))
367 (end-of-line)
368 (delete-region pt (point))
369 (if (eobp)
370 (insert "\n")
371 (forward-char 1))
372 (if eat-lnums (setq i (+ i 4)))))
373 (self-insert-command 1))
374 (setq i (1+ i))))))
375
376 ;;; First, require that buffer is visible and does not begin with "*"
377 ;;; Second, require only that it not begin with "*Calc"
378 (defun calc-find-writable-buffer (buf mode)
379 (and buf
380 (if (or (string-match "\\`\\( .*\\|\\*Calc.*\\)"
381 (buffer-name (car buf)))
382 (and (= mode 0)
383 (or (string-match "\\`\\*.*" (buffer-name (car buf)))
384 (not (get-buffer-window (car buf))))))
385 (calc-find-writable-buffer (cdr buf) mode)
386 (car buf))))
387
388
389 (defun calc-edit (n)
390 (interactive "p")
391 (calc-slow-wrapper
392 (when (eq n 0)
393 (setq n (calc-stack-size)))
394 (let* ((flag nil)
395 (allow-ret (> n 1))
396 (list (math-showing-full-precision
397 (mapcar (if (> n 1)
398 (function (lambda (x)
399 (math-format-flat-expr x 0)))
400 (function
401 (lambda (x)
402 (if (math-vectorp x) (setq allow-ret t))
403 (math-format-nice-expr x (frame-width)))))
404 (if (> n 0)
405 (calc-top-list n)
406 (calc-top-list 1 (- n)))))))
407 (calc-edit-mode (list 'calc-finish-stack-edit (or flag n)) allow-ret)
408 (while list
409 (insert (car list) "\n")
410 (setq list (cdr list)))))
411 (calc-show-edit-buffer))
412
413 (defun calc-alg-edit (str)
414 (calc-edit-mode '(calc-finish-stack-edit 0))
415 (calc-show-edit-buffer)
416 (insert str "\n")
417 (backward-char 1)
418 (calc-set-command-flag 'do-edit))
419
420 (defvar calc-edit-mode-map nil "Keymap for use by the calc-edit command.")
421 (if calc-edit-mode-map
422 ()
423 (setq calc-edit-mode-map (make-sparse-keymap))
424 (define-key calc-edit-mode-map "\n" 'calc-edit-finish)
425 (define-key calc-edit-mode-map "\r" 'calc-edit-return)
426 (define-key calc-edit-mode-map "\C-c\C-c" 'calc-edit-finish))
427
428 (defvar calc-original-buffer)
429 (defvar calc-return-buffer)
430 (defvar calc-one-window)
431 (defvar calc-edit-handler)
432 (defvar calc-restore-trail)
433 (defvar calc-allow-ret)
434 (defvar calc-edit-top)
435
436 (defun calc-edit-mode (&optional handler allow-ret title)
437 "Calculator editing mode. Press RET, LFD, or C-c C-c to finish.
438 To cancel the edit, simply kill the *Calc Edit* buffer."
439 (interactive)
440 (unless handler
441 (error "This command can be used only indirectly through calc-edit"))
442 (let ((oldbuf (current-buffer))
443 (buf (get-buffer-create "*Calc Edit*")))
444 (set-buffer buf)
445 (kill-all-local-variables)
446 (use-local-map calc-edit-mode-map)
447 (setq buffer-read-only nil)
448 (setq truncate-lines nil)
449 (setq major-mode 'calc-edit-mode)
450 (setq mode-name "Calc Edit")
451 (run-mode-hooks 'calc-edit-mode-hook)
452 (make-local-variable 'calc-original-buffer)
453 (setq calc-original-buffer oldbuf)
454 (make-local-variable 'calc-return-buffer)
455 (setq calc-return-buffer oldbuf)
456 (make-local-variable 'calc-one-window)
457 (setq calc-one-window (and (one-window-p t) pop-up-windows))
458 (make-local-variable 'calc-edit-handler)
459 (setq calc-edit-handler handler)
460 (make-local-variable 'calc-restore-trail)
461 (setq calc-restore-trail (get-buffer-window (calc-trail-buffer)))
462 (make-local-variable 'calc-allow-ret)
463 (setq calc-allow-ret allow-ret)
464 (let ((inhibit-read-only t))
465 (erase-buffer))
466 (add-hook 'kill-buffer-hook (lambda ()
467 (let ((calc-edit-handler nil))
468 (calc-edit-finish t))
469 (message "(Cancelled)")) t t)
470 (insert (propertize
471 (concat
472 (or title title "Calc Edit Mode. ")
473 "Press `C-c C-c'"
474 (if allow-ret "" " or RET")
475 " to finish, `C-x k RET' to cancel.\n\n")
476 'font-lock-face 'italic 'read-only t 'rear-nonsticky t 'front-sticky t))
477 (make-local-variable 'calc-edit-top)
478 (setq calc-edit-top (point))))
479 (put 'calc-edit-mode 'mode-class 'special)
480
481 (defun calc-show-edit-buffer ()
482 (let ((buf (current-buffer)))
483 (if (and (one-window-p t) pop-up-windows)
484 (pop-to-buffer (get-buffer-create "*Calc Edit*"))
485 (and calc-embedded-info (get-buffer-window (aref calc-embedded-info 1))
486 (select-window (get-buffer-window (aref calc-embedded-info 1))))
487 (switch-to-buffer (get-buffer-create "*Calc Edit*")))
488 (setq calc-return-buffer buf)
489 (if (and (< (window-width) (frame-width))
490 calc-display-trail)
491 (let ((win (get-buffer-window (calc-trail-buffer))))
492 (if win
493 (delete-window win))))
494 (set-buffer-modified-p nil)
495 (goto-char calc-edit-top)))
496
497 (defun calc-edit-return ()
498 (interactive)
499 (if (and (boundp 'calc-allow-ret) calc-allow-ret)
500 (newline)
501 (calc-edit-finish)))
502
503 ;; The variable calc-edit-disp-trail is local to calc-edit finish, but
504 ;; is used by calc-finish-selection-edit and calc-finish-stack-edit.
505 (defvar calc-edit-disp-trail)
506
507 (defun calc-edit-finish (&optional keep)
508 "Finish calc-edit mode. Parse buffer contents and push them on the stack."
509 (interactive "P")
510 (message "Working...")
511 (or (and (boundp 'calc-original-buffer)
512 (boundp 'calc-return-buffer)
513 (boundp 'calc-one-window)
514 (boundp 'calc-edit-handler)
515 (boundp 'calc-restore-trail)
516 (eq major-mode 'calc-edit-mode))
517 (error "This command is valid only in buffers created by calc-edit"))
518 (let ((buf (current-buffer))
519 (original calc-original-buffer)
520 (return calc-return-buffer)
521 (one-window calc-one-window)
522 (calc-edit-disp-trail calc-restore-trail))
523 (save-excursion
524 (when (or (null (buffer-name original))
525 (progn
526 (set-buffer original)
527 (not (eq major-mode 'calc-mode))))
528 (error "Original calculator buffer has been corrupted")))
529 (goto-char calc-edit-top)
530 (if (buffer-modified-p)
531 (eval calc-edit-handler))
532 (if (and one-window (not (one-window-p t)))
533 (delete-window))
534 (if (get-buffer-window return)
535 (select-window (get-buffer-window return))
536 (switch-to-buffer return))
537 (if keep
538 (bury-buffer buf)
539 (kill-buffer buf))
540 (if calc-edit-disp-trail
541 (calc-wrapper
542 (calc-trail-display 1 t)))
543 (message "")))
544
545 (defun calc-edit-cancel ()
546 "Cancel calc-edit mode. Ignore the Calc Edit buffer and don't change stack."
547 (interactive)
548 (let ((calc-edit-handler nil))
549 (calc-edit-finish))
550 (message "(Cancelled)"))
551
552 (defun calc-finish-stack-edit (num)
553 (let ((buf (current-buffer))
554 (str (buffer-substring calc-edit-top (point-max)))
555 (start (point))
556 pos)
557 (if (and (integerp num) (> num 1))
558 (while (setq pos (string-match "\n." str))
559 (aset str pos ?\,)))
560 (switch-to-buffer calc-original-buffer)
561 (let ((vals (let ((calc-language nil)
562 (math-expr-opers math-standard-opers))
563 (and (string-match "[^\n\t ]" str)
564 (math-read-exprs str)))))
565 (when (eq (car-safe vals) 'error)
566 (switch-to-buffer buf)
567 (goto-char (+ start (nth 1 vals)))
568 (error (nth 2 vals)))
569 (calc-wrapper
570 (if (symbolp num)
571 (progn
572 (set num (car vals))
573 (calc-refresh-evaltos num))
574 (if calc-edit-disp-trail
575 (calc-trail-display 1 t))
576 (and vals
577 (let ((calc-simplify-mode (if (eq last-command-char ?\C-j)
578 'none
579 calc-simplify-mode)))
580 (if (>= num 0)
581 (calc-enter-result num "edit" vals)
582 (calc-enter-result 1 "edit" vals (- num))))))))))
583
584 (provide 'calc-yank)
585
586 ;;; arch-tag: ca61019e-caca-4daa-b32c-b6afe372d5b5
587 ;;; calc-yank.el ends here