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emacs/lisp/calc/calc-yank.el

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;;; calc-yank.el --- kill-ring functionality for Calc
;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004,
;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
;; Author: David Gillespie <daveg@synaptics.com>
;; Maintainer: Jay Belanger <jay.p.belanger@gmail.com>
;; 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:
;; This file is autoloaded from calc-ext.el.
(require 'calc-ext)
(require 'calc-macs)
;;; Kill ring commands.
(defun calc-kill (nn &optional no-delete)
(interactive "P")
(if (eq major-mode 'calc-mode)
(calc-wrapper
(calc-force-refresh)
(calc-set-command-flag 'no-align)
(let ((num (max (calc-locate-cursor-element (point)) 1))
(n (prefix-numeric-value nn)))
(if (< n 0)
(progn
(if (eobp)
(setq num (1- num)))
(setq num (- num n)
n (- n))))
(let ((stuff (calc-top-list n (- num n -1))))
(calc-cursor-stack-index num)
(let ((first (point)))
(calc-cursor-stack-index (- num n))
(if (null nn)
(backward-char 1)) ; don't include newline for raw C-k
(copy-region-as-kill first (point))
(if (not no-delete)
(calc-pop-stack n (- num n -1))))
(setq calc-last-kill (cons (car kill-ring) stuff)))))
(kill-line nn)))
(defun calc-force-refresh ()
(if (or calc-executing-macro calc-display-dirty)
(let ((calc-executing-macro nil))
(calc-refresh))))
(defun calc-locate-cursor-element (pt)
(save-excursion
(goto-char (point-max))
(calc-locate-cursor-scan (- calc-stack-top) calc-stack pt)))
(defun calc-locate-cursor-scan (n stack pt)
(if (or (<= (point) pt)
(null stack))
n
(forward-line (- (nth 1 (car stack))))
(calc-locate-cursor-scan (1+ n) (cdr stack) pt)))
(defun calc-kill-region (top bot &optional no-delete)
(interactive "r")
(if (eq major-mode 'calc-mode)
(calc-wrapper
(calc-force-refresh)
(calc-set-command-flag 'no-align)
(let* ((top-num (calc-locate-cursor-element top))
(bot-num (calc-locate-cursor-element (1- bot)))
(num (- top-num bot-num -1)))
(copy-region-as-kill top bot)
(setq calc-last-kill (cons (car kill-ring)
(calc-top-list num bot-num)))
(if (not no-delete)
(calc-pop-stack num bot-num))))
(if no-delete
(copy-region-as-kill top bot)
(kill-region top bot))))
(defun calc-copy-as-kill (n)
(interactive "P")
(calc-kill n t))
(defun calc-copy-region-as-kill (top bot)
(interactive "r")
(calc-kill-region top bot t))
;; This function uses calc-last-kill if possible to get an exact result,
;; otherwise it just parses the yanked string.
;; Modified to use Emacs 19 extended concept of kill-ring. -- daveg 12/15/96
;;;###autoload
(defun calc-yank ()
(interactive)
(calc-wrapper
(calc-pop-push-record-list
0 "yank"
(let ((thing (if (fboundp 'current-kill)
(current-kill 0 t)
(car kill-ring-yank-pointer))))
(if (eq (car-safe calc-last-kill) thing)
(cdr calc-last-kill)
(if (stringp thing)
(let ((val (math-read-exprs (calc-clean-newlines thing))))
(if (eq (car-safe val) 'error)
(progn
(setq val (math-read-exprs thing))
(if (eq (car-safe val) 'error)
(error "Bad format in yanked data")
val))
val))))))))
(defun calc-clean-newlines (s)
(cond
;; Omit leading/trailing whitespace
((or (string-match "\\`[ \n\r]+\\([^\001]*\\)\\'" s)
(string-match "\\`\\([^\001]*\\)[ \n\r]+\\'" s))
(calc-clean-newlines (math-match-substring s 1)))
;; Convert newlines to commas
((string-match "\\`\\(.*\\)[\n\r]+\\([^\001]*\\)\\'" s)
(calc-clean-newlines (concat (math-match-substring s 1) ","
(math-match-substring s 2))))
(t s)))
(defun calc-do-grab-region (top bot arg)
(when (memq major-mode '(calc-mode calc-trail-mode))
(error "This command works only in a regular text buffer"))
(let* ((from-buffer (current-buffer))
(calc-was-started (get-buffer-window "*Calculator*"))
(single nil)
data vals pos)
(if arg
(if (consp arg)
(setq single t)
(setq arg (prefix-numeric-value arg))
(if (= arg 0)
(save-excursion
(beginning-of-line)
(setq top (point))
(end-of-line)
(setq bot (point)))
(save-excursion
(setq top (point))
(forward-line arg)
(if (> arg 0)
(setq bot (point))
(setq bot top
top (point)))))))
(setq data (buffer-substring top bot))
(calc)
(if single
(setq vals (math-read-expr data))
(setq vals (math-read-expr (concat "[" data "]")))
(and (eq (car-safe vals) 'vec)
(= (length vals) 2)
(eq (car-safe (nth 1 vals)) 'vec)
(setq vals (nth 1 vals))))
(if (eq (car-safe vals) 'error)
(progn
(if calc-was-started
(pop-to-buffer from-buffer)
(calc-quit t)
(switch-to-buffer from-buffer))
(goto-char top)
(forward-char (+ (nth 1 vals) (if single 0 1)))
(error (nth 2 vals))))
(calc-slow-wrapper
(calc-enter-result 0 "grab" vals))))
(defun calc-do-grab-rectangle (top bot arg &optional reduce)
(and (memq major-mode '(calc-mode calc-trail-mode))
(error "This command works only in a regular text buffer"))
(let* ((col1 (save-excursion (goto-char top) (current-column)))
(col2 (save-excursion (goto-char bot) (current-column)))
(from-buffer (current-buffer))
(calc-was-started (get-buffer-window "*Calculator*"))
data mat vals lnum pt pos)
(if (= col1 col2)
(save-excursion
(unless (= col1 0)
(error "Point and mark must be at beginning of line, or define a rectangle"))
(goto-char top)
(while (< (point) bot)
(setq pt (point))
(forward-line 1)
(setq data (cons (buffer-substring pt (1- (point))) data)))
(setq data (nreverse data)))
(setq data (extract-rectangle top bot)))
(calc)
(setq mat (list 'vec)
lnum 0)
(when arg
(setq arg (if (consp arg) 0 (prefix-numeric-value arg))))
(while data
(if (natnump arg)
(progn
(if (= arg 0)
(setq arg 1000000))
(setq pos 0
vals (list 'vec))
(let ((w (length (car data)))
j v)
(while (< pos w)
(setq j (+ pos arg)
v (if (>= j w)
(math-read-expr (substring (car data) pos))
(math-read-expr (substring (car data) pos j))))
(if (eq (car-safe v) 'error)
(setq vals v w 0)
(setq vals (nconc vals (list v))
pos j)))))
(if (string-match "\\` *-?[0-9][0-9]?[0-9]?[0-9]?[0-9]?[0-9]? *\\'"
(car data))
(setq vals (list 'vec (string-to-number (car data))))
(if (and (null arg)
(string-match "[[{][^][{}]*[]}]" (car data)))
(setq pos (match-beginning 0)
vals (math-read-expr (math-match-substring (car data) 0)))
(let ((s (if (string-match
"\\`\\([0-9]+:[ \t]\\)?\\(.*[^, \t]\\)[, \t]*\\'"
(car data))
(math-match-substring (car data) 2)
(car data))))
(setq pos -1
vals (math-read-expr (concat "[" s "]")))
(if (eq (car-safe vals) 'error)
(let ((v2 (math-read-expr s)))
(unless (eq (car-safe v2) 'error)
(setq vals (list 'vec v2)))))))))
(if (eq (car-safe vals) 'error)
(progn
(if calc-was-started
(pop-to-buffer from-buffer)
(calc-quit t)
(switch-to-buffer from-buffer))
(goto-char top)
(forward-line lnum)
(forward-char (+ (nth 1 vals) (min col1 col2) pos))
(error (nth 2 vals))))
(unless (equal vals '(vec))
(setq mat (cons vals mat)))
(setq data (cdr data)
lnum (1+ lnum)))
(calc-slow-wrapper
(if reduce
(calc-enter-result 0 "grb+" (list reduce '(var add var-add)
(nreverse mat)))
(calc-enter-result 0 "grab" (nreverse mat))))))
(defun calc-copy-to-buffer (nn)
"Copy the top of stack into an editing buffer."
(interactive "P")
(let ((thebuf (and (not (memq major-mode '(calc-mode calc-trail-mode)))
(current-buffer)))
(movept nil)
oldbuf newbuf)
(calc-wrapper
(save-excursion
(calc-force-refresh)
(let ((n (prefix-numeric-value nn))
(eat-lnums calc-line-numbering)
(big-offset (if (eq calc-language 'big) 1 0))
top bot)
(setq oldbuf (current-buffer)
newbuf (or thebuf
(calc-find-writable-buffer (buffer-list) 0)
(calc-find-writable-buffer (buffer-list) 1)
(error "No other buffer")))
(cond ((and (or (null nn)
(consp nn))
(= (calc-substack-height 0)
(- (1- (calc-substack-height 1)) big-offset)))
(calc-cursor-stack-index 1)
(if (looking-at
(if calc-line-numbering "[0-9]+: *[^ \n]" " *[^ \n]"))
(goto-char (1- (match-end 0))))
(setq eat-lnums nil
top (point))
(calc-cursor-stack-index 0)
(setq bot (- (1- (point)) big-offset)))
((> n 0)
(calc-cursor-stack-index n)
(setq top (point))
(calc-cursor-stack-index 0)
(setq bot (- (point) big-offset)))
((< n 0)
(calc-cursor-stack-index (- n))
(setq top (point))
(calc-cursor-stack-index (1- (- n)))
(setq bot (point)))
(t
(goto-char (point-min))
(forward-line 1)
(setq top (point))
(calc-cursor-stack-index 0)
(setq bot (point))))
(save-excursion
(set-buffer newbuf)
(if (consp nn)
(kill-region (region-beginning) (region-end)))
(push-mark (point) t)
(if (and overwrite-mode (not (consp nn)))
(calc-overwrite-string (save-excursion
(set-buffer oldbuf)
(buffer-substring top bot))
eat-lnums)
(or (bolp) (setq eat-lnums nil))
(insert-buffer-substring oldbuf top bot)
(and eat-lnums
(let ((n 1))
(while (and (> (point) (mark))
(progn
(forward-line -1)
(>= (point) (mark))))
(delete-char 4)
(setq n (1+ n)))
(forward-line n))))
(when thebuf
(setq movept (point)))
(when (get-buffer-window (current-buffer))
(set-window-point (get-buffer-window (current-buffer))
(point)))))))
(when movept
(goto-char movept))
(when (and (consp nn)
(not thebuf))
(calc-quit t)
(switch-to-buffer newbuf))))
(defun calc-overwrite-string (str eat-lnums)
(when (string-match "\n\\'" str)
(setq str (substring str 0 -1)))
(when eat-lnums
(setq str (substring str 4)))
(if (and (string-match "\\`[-+]?[0-9.]+\\(e-?[0-9]+\\)?\\'" str)
(looking-at "[-+]?[0-9.]+\\(e-?[0-9]+\\)?"))
(progn
(delete-region (point) (match-end 0))
(insert str))
(let ((i 0))
(while (< i (length str))
(if (= (setq last-command-char (aref str i)) ?\n)
(or (= i (1- (length str)))
(let ((pt (point)))
(end-of-line)
(delete-region pt (point))
(if (eobp)
(insert "\n")
(forward-char 1))
(if eat-lnums (setq i (+ i 4)))))
(self-insert-command 1))
(setq i (1+ i))))))
;; First, require that buffer is visible and does not begin with "*"
;; Second, require only that it not begin with "*Calc"
(defun calc-find-writable-buffer (buf mode)
(and buf
(if (or (string-match "\\`\\( .*\\|\\*Calc.*\\)"
(buffer-name (car buf)))
(and (= mode 0)
(or (string-match "\\`\\*.*" (buffer-name (car buf)))
(not (get-buffer-window (car buf))))))
(calc-find-writable-buffer (cdr buf) mode)
(car buf))))
(defun calc-edit (n)
(interactive "p")
(calc-slow-wrapper
(when (eq n 0)
(setq n (calc-stack-size)))
(let* ((flag nil)
(allow-ret (> n 1))
(list (math-showing-full-precision
(mapcar (if (> n 1)
(function (lambda (x)
(math-format-flat-expr x 0)))
(function
(lambda (x)
(if (math-vectorp x) (setq allow-ret t))
(math-format-nice-expr x (frame-width)))))
(if (> n 0)
(calc-top-list n)
(calc-top-list 1 (- n)))))))
(calc-edit-mode (list 'calc-finish-stack-edit (or flag n)) allow-ret)
(while list
(insert (car list) "\n")
(setq list (cdr list)))))
(calc-show-edit-buffer))
(defun calc-alg-edit (str)
(calc-edit-mode '(calc-finish-stack-edit 0))
(calc-show-edit-buffer)
(insert str "\n")
(backward-char 1)
(calc-set-command-flag 'do-edit))
(defvar calc-edit-mode-map
(let ((map (make-sparse-keymap)))
(define-key map "\n" 'calc-edit-finish)
(define-key map "\r" 'calc-edit-return)
(define-key map "\C-c\C-c" 'calc-edit-finish)
map)
"Keymap for use by the calc-edit command.")
(defvar calc-original-buffer)
(defvar calc-return-buffer)
(defvar calc-one-window)
(defvar calc-edit-handler)
(defvar calc-restore-trail)
(defvar calc-allow-ret)
(defvar calc-edit-top)
(defun calc-edit-mode (&optional handler allow-ret title)
"Calculator editing mode. Press RET, LFD, or C-c C-c to finish.
To cancel the edit, simply kill the *Calc Edit* buffer."
(interactive)
(unless handler
(error "This command can be used only indirectly through calc-edit"))
(let ((oldbuf (current-buffer))
(buf (get-buffer-create "*Calc Edit*")))
(set-buffer buf)
(kill-all-local-variables)
(use-local-map calc-edit-mode-map)
(setq buffer-read-only nil)
(setq truncate-lines nil)
(setq major-mode 'calc-edit-mode)
(setq mode-name "Calc Edit")
(run-mode-hooks 'calc-edit-mode-hook)
(make-local-variable 'calc-original-buffer)
(setq calc-original-buffer oldbuf)
(make-local-variable 'calc-return-buffer)
(setq calc-return-buffer oldbuf)
(make-local-variable 'calc-one-window)
(setq calc-one-window (and (one-window-p t) pop-up-windows))
(make-local-variable 'calc-edit-handler)
(setq calc-edit-handler handler)
(make-local-variable 'calc-restore-trail)
(setq calc-restore-trail (get-buffer-window (calc-trail-buffer)))
(make-local-variable 'calc-allow-ret)
(setq calc-allow-ret allow-ret)
(let ((inhibit-read-only t))
(erase-buffer))
(add-hook 'kill-buffer-hook (lambda ()
(let ((calc-edit-handler nil))
(calc-edit-finish t))
(message "(Cancelled)")) t t)
(insert (propertize
(concat
(or title title "Calc Edit Mode. ")
"Press `C-c C-c'"
(if allow-ret "" " or RET")
" to finish, `C-x k RET' to cancel.\n\n")
'font-lock-face 'italic 'read-only t 'rear-nonsticky t 'front-sticky t))
(make-local-variable 'calc-edit-top)
(setq calc-edit-top (point))))
(put 'calc-edit-mode 'mode-class 'special)
(defun calc-show-edit-buffer ()
(let ((buf (current-buffer)))
(if (and (one-window-p t) pop-up-windows)
(pop-to-buffer (get-buffer-create "*Calc Edit*"))
(and calc-embedded-info (get-buffer-window (aref calc-embedded-info 1))
(select-window (get-buffer-window (aref calc-embedded-info 1))))
(switch-to-buffer (get-buffer-create "*Calc Edit*")))
(setq calc-return-buffer buf)
(if (and (< (window-width) (frame-width))
calc-display-trail)
(let ((win (get-buffer-window (calc-trail-buffer))))
(if win
(delete-window win))))
(set-buffer-modified-p nil)
(goto-char calc-edit-top)))
(defun calc-edit-return ()
(interactive)
(if (and (boundp 'calc-allow-ret) calc-allow-ret)
(newline)
(calc-edit-finish)))
;; The variable calc-edit-disp-trail is local to calc-edit finish, but
;; is used by calc-finish-selection-edit and calc-finish-stack-edit.
(defvar calc-edit-disp-trail)
(defun calc-edit-finish (&optional keep)
"Finish calc-edit mode. Parse buffer contents and push them on the stack."
(interactive "P")
(message "Working...")
(or (and (boundp 'calc-original-buffer)
(boundp 'calc-return-buffer)
(boundp 'calc-one-window)
(boundp 'calc-edit-handler)
(boundp 'calc-restore-trail)
(eq major-mode 'calc-edit-mode))
(error "This command is valid only in buffers created by calc-edit"))
(let ((buf (current-buffer))
(original calc-original-buffer)
(return calc-return-buffer)
(one-window calc-one-window)
(calc-edit-disp-trail calc-restore-trail))
(save-excursion
(when (or (null (buffer-name original))
(progn
(set-buffer original)
(not (eq major-mode 'calc-mode))))
(error "Original calculator buffer has been corrupted")))
(goto-char calc-edit-top)
(if (buffer-modified-p)
(eval calc-edit-handler))
(if (and one-window (not (one-window-p t)))
(delete-window))
(if (get-buffer-window return)
(select-window (get-buffer-window return))
(switch-to-buffer return))
(if keep
(bury-buffer buf)
(kill-buffer buf))
(if calc-edit-disp-trail
(calc-wrapper
(calc-trail-display 1 t)))
(message "")))
(defun calc-edit-cancel ()
"Cancel calc-edit mode. Ignore the Calc Edit buffer and don't change stack."
(interactive)
(let ((calc-edit-handler nil))
(calc-edit-finish))
(message "(Cancelled)"))
(defun calc-finish-stack-edit (num)
(let ((buf (current-buffer))
(str (buffer-substring calc-edit-top (point-max)))
(start (point))
pos)
(if (and (integerp num) (> num 1))
(while (setq pos (string-match "\n." str))
(aset str pos ?\,)))
(switch-to-buffer calc-original-buffer)
(let ((vals (let ((calc-language nil)
(math-expr-opers (math-standard-ops)))
(and (string-match "[^\n\t ]" str)
(math-read-exprs str)))))
(when (eq (car-safe vals) 'error)
(switch-to-buffer buf)
(goto-char (+ start (nth 1 vals)))
(error (nth 2 vals)))
(calc-wrapper
(if (symbolp num)
(progn
(set num (car vals))
(calc-refresh-evaltos num))
(if calc-edit-disp-trail
(calc-trail-display 1 t))
(and vals
(let ((calc-simplify-mode (if (eq last-command-char ?\C-j)
'none
calc-simplify-mode)))
(if (>= num 0)
(calc-enter-result num "edit" vals)
(calc-enter-result 1 "edit" vals (- num))))))))))
(provide 'calc-yank)
;; Local variables:
;; generated-autoload-file: "calc-loaddefs.el"
;; End:
;; arch-tag: ca61019e-caca-4daa-b32c-b6afe372d5b5
;;; calc-yank.el ends here
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