;;; calculator.el --- a calculator for Emacs -*- lexical-binding: t -*-
-;; Copyright (C) 1998, 2000-2015 Free Software Foundation, Inc.
+;; Copyright (C) 1998, 2000-2016 Free Software Foundation, Inc.
;; Author: Eli Barzilay <eli@barzilay.org>
;; Keywords: tools, convenience
floats, otherwise the Emacs reader will fail on them."
:type 'boolean
:group 'calculator)
+(make-obsolete-variable 'calculator-paste-decimals
+ "it is no longer used." nil)
(defcustom calculator-copy-displayer nil
"If non-nil, this is any value that can be used for
(defvar calculator-operators nil
"The calculator operators, each a list with:
-1. The key that is bound to for this operation, a string that is
+1. The key(s) that is bound to for this operation, a string that is
used with `kbd';
2. The displayed symbol for this function;
It it possible have a unary prefix version of a binary operator if it
comes later in this list. If the list begins with the symbol `nobind',
-then no key binding will take place -- this is only useful for
-predefined keys.
+then no key binding will take place -- this is only used for predefined
+keys.
Use `calculator-user-operators' to add operators to this list, see its
documentation for an example.")
(list (cons ?e float-e) (cons ?p float-pi)))
"The association list of calculator register values.")
-(defvar calculator-saved-global-map nil
- "Saved global key map.")
-
(defvar calculator-restart-other-mode nil
"Used to hack restarting with the electric mode changed.")
;;;---------------------------------------------------------------------
;;; Key bindings
+(defun calculator-define-key (key cmd map)
+ ;; Arranges for unbound alphabetic keys to be used as their un/shifted
+ ;; versions if those are bound (mimics the usual Emacs global bindings).
+ ;; FIXME: We should adjust Emacs's native "fallback to unshifted binding"
+ ;; such that it can also be used here, rather than having to use a hack like
+ ;; this one.
+ (let* ((key (if (stringp key) (kbd key) key))
+ (omap (keymap-parent map)))
+ (define-key map key cmd)
+ ;; "other" map, used for case-flipped bindings
+ (unless omap
+ (setq omap (make-sparse-keymap))
+ (suppress-keymap omap t)
+ (set-keymap-parent map omap))
+ (let ((m omap))
+ ;; Bind all case-flipped versions.
+ (dotimes (i (length key))
+ (let* ((c (aref key i))
+ (k (vector c))
+ (b (lookup-key m k))
+ (defkey (lambda (x)
+ (define-key m k x)
+ (when (and (characterp c)
+ (or (<= ?A c ?Z) (<= ?a c ?z)))
+ (define-key m (vector (logxor 32 c)) x)))))
+ (cond ((= i (1- (length key)))
+ ;; Prefer longer sequences.
+ (unless (keymapp b) (funcall defkey cmd)))
+ ((keymapp b) (setq m b))
+ (t (let ((sub (make-sparse-keymap)))
+ (funcall defkey sub)
+ (setq m sub)))))))))
+
(defvar calculator-mode-map
(let ((map (make-sparse-keymap)))
(suppress-keymap map t)
- (define-key map "i" nil)
- (define-key map "o" nil)
- (let ((p
- '((calculator-open-paren "[")
- (calculator-close-paren "]")
- (calculator-op-or-exp "+" "-" [kp-add] [kp-subtract])
- (calculator-digit "0" "1" "2" "3" "4" "5" "6" "7" "8"
- "9" "a" "b" "c" "d" "f"
- [kp-0] [kp-1] [kp-2] [kp-3] [kp-4]
- [kp-5] [kp-6] [kp-7] [kp-8] [kp-9])
- (calculator-op [kp-divide] [kp-multiply])
- (calculator-decimal "." [kp-decimal])
- (calculator-exp "e")
- (calculator-dec/deg-mode "D")
- (calculator-set-register "s")
- (calculator-get-register "g")
- (calculator-radix-mode "H" "X" "O" "B")
- (calculator-radix-input-mode "id" "ih" "ix" "io" "ib"
- "iD" "iH" "iX" "iO" "iB")
- (calculator-radix-output-mode "od" "oh" "ox" "oo" "ob"
- "oD" "oH" "oX" "oO" "oB")
- (calculator-rotate-displayer "'")
- (calculator-rotate-displayer-back "\"")
- (calculator-displayer-prev "{")
- (calculator-displayer-next "}")
- (calculator-saved-up [up] [?\C-p])
- (calculator-saved-down [down] [?\C-n])
- (calculator-quit "q" [?\C-g])
- (calculator-enter [enter] [linefeed] [kp-enter]
- [return] [?\r] [?\n])
- (calculator-save-on-list " " [space])
- (calculator-clear-saved [?\C-c] [(control delete)])
- (calculator-save-and-quit [(control return)]
- [(control kp-enter)])
- (calculator-paste [insert] [(shift insert)]
- [paste] [mouse-2] [?\C-y])
- (calculator-clear [delete] [?\C-?] [?\C-d])
- (calculator-help [?h] [??] [f1] [help])
- (calculator-copy [(control insert)] [copy])
- (calculator-backspace [backspace])
- )))
- (while p
- ;; reverse the keys so earlier definitions come last -- makes
- ;; the more sensible bindings visible in the menu
- (let ((func (caar p)) (keys (reverse (cdar p))))
- (while keys
- (define-key map (car keys) func)
- (setq keys (cdr keys))))
- (setq p (cdr p))))
+ (dolist (x '((calculator-digit
+ "0" "1" "2" "3" "4" "5" "6" "7" "8" "9" "a" "b" "c"
+ "d" "f" "<kp-0>" "<kp-1>" "<kp-2>" "<kp-3>" "<kp-4>"
+ "<kp-5>" "<kp-6>" "<kp-7>" "<kp-8>" "<kp-9>")
+ (calculator-open-paren "[")
+ (calculator-close-paren "]")
+ (calculator-op-or-exp "+" "-"
+ "<kp-add>" "<kp-subtract>")
+ (calculator-op "<kp-divide>" "<kp-multiply>")
+ (calculator-decimal "." "<kp-decimal>")
+ (calculator-exp "e")
+ (calculator-dec/deg-mode "D")
+ (calculator-set-register "s")
+ (calculator-get-register "g")
+ (calculator-radix-mode "H" "X" "O" "B")
+ (calculator-radix-input-mode "iD" "iH" "iX" "iO" "iB")
+ (calculator-radix-output-mode "oD" "oH" "oX" "oO" "oB")
+ (calculator-rotate-displayer "'")
+ (calculator-rotate-displayer-back "\"")
+ (calculator-displayer-prev "{")
+ (calculator-displayer-next "}")
+ (calculator-saved-up "<up>" "C-p")
+ (calculator-saved-down "<down>" "C-n")
+ (calculator-quit "q" "C-g")
+ (calculator-enter "<enter>" "<linefeed>"
+ "<kp-enter>" "<return>"
+ "RET" "LFD")
+ (calculator-save-on-list "SPC" "<space>")
+ (calculator-clear-saved "C-c" "<C-delete>")
+ (calculator-save-and-quit "<C-return>" "<C-kp-enter>")
+ (calculator-paste "<insert>" "<S-insert>"
+ "<paste>" "<mouse-2>" "C-y")
+ (calculator-clear "<delete>" "DEL" "C-d")
+ (calculator-help "h" "?" "<f1>" "<help>")
+ (calculator-copy "<C-insert>" "<copy>")
+ (calculator-backspace "<backspace>")
+ ))
+ ;; reverse the keys so earlier definitions come last -- makes the
+ ;; more sensible bindings visible in the menu
+ (dolist (k (reverse (cdr x)))
+ (calculator-define-key k (car x) map)))
(if calculator-bind-escape
- (progn (define-key map [?\e] 'calculator-quit)
- (define-key map [escape] 'calculator-quit))
- (define-key map [?\e ?\e ?\e] 'calculator-quit))
+ (progn (calculator-define-key "ESC" 'calculator-quit map)
+ (calculator-define-key "<escape>" 'calculator-quit map))
+ (calculator-define-key "ESC ESC ESC" 'calculator-quit map))
;; make C-h work in text-mode
(unless window-system
- (define-key map [?\C-h] 'calculator-backspace))
+ (calculator-define-key "C-h" 'calculator-backspace map))
;; set up a menu
(when (and calculator-use-menu (not (boundp 'calculator-menu)))
(let ((radix-selectors
hex/oct/bin modes can be set for input and for display separately.
Another toggle-able mode is for using degrees instead of radians for
trigonometric functions.
-The keys to switch modes are (`X' is shortcut for `H'):
+The keys to switch modes are (both `H' and `X' are for hex):
* `D' switch to all-decimal mode, or toggle degrees/radians
* `B' `O' `H' `X' binary/octal/hexadecimal modes for input & display
* `i' `o' followed by one of `D' `B' `O' `H' `X' (case
insensitive) sets only the input or display radix mode
The prompt indicates the current modes:
-* \"D=\": degrees mode;
-* \"?=\": (? is B/O/H) this is the radix for both input and output;
-* \"=?\": (? is B/O/H) the display radix (when input is decimal);
-* \"??\": (? is D/B/O/H) 1st char for input radix, 2nd for display.
+* \"==\": decimal mode (using radians);
+* \"D=\": decimal mode using degrees;
+* \"?=\": ? is B/O/H, the radix for both input and output;
+* \"=?\": ? is B/O/H, the display radix (with decimal input);
+* \"??\": ? is D/B/O/H, 1st char for input radix, 2nd for display.
Also, the quote key can be used to switch display modes for decimal
numbers (double-quote rotates back), and the two brace characters
(if calculator-electric-mode
(save-window-excursion
(require 'electric) (message nil) ; hide load message
- (let (old-g-map old-l-map
- (old-buf (window-buffer (minibuffer-window)))
+ (let ((old-buf (window-buffer (minibuffer-window)))
(echo-keystrokes 0)
(garbage-collection-messages nil)) ; no gc msg when electric
(set-window-buffer (minibuffer-window) calculator-buffer)
(select-window (minibuffer-window))
(calculator-reset)
(calculator-update-display)
- (setq old-l-map (current-local-map)
- old-g-map (current-global-map)
- calculator-saved-global-map (current-global-map))
- (use-local-map nil)
- (use-global-map calculator-mode-map)
+ (use-local-map calculator-mode-map)
(run-hooks 'calculator-mode-hook)
(unwind-protect
(catch 'calculator-done
nil
(lambda (_x _y) (calculator-update-display))))
(set-window-buffer (minibuffer-window) old-buf)
- (kill-buffer calculator-buffer)
- (use-local-map old-l-map)
- (use-global-map old-g-map))))
+ (kill-buffer calculator-buffer))))
(progn
(cond
((not (get-buffer-window calculator-buffer))
Adds MORE-OPS to `calculator-operator', called initially to handle
`calculator-initial-operators' and `calculator-user-operators'."
(let ((added-ops nil))
- (while more-ops
- (unless (eq (caar more-ops) 'nobind)
- (let ((i -1) (key (caar more-ops)))
- ;; make sure the key is undefined, so it's easy to define
- ;; prefix keys
- (while (< (setq i (1+ i)) (length key))
- (unless (keymapp (lookup-key calculator-mode-map
- (substring key 0 (1+ i))))
- (define-key calculator-mode-map (substring key 0 (1+ i))
- nil)
- (setq i (length key))))
- (define-key calculator-mode-map key 'calculator-op)))
- (push (if (eq (caar more-ops) 'nobind)
- (cdar more-ops)
- (car more-ops))
- added-ops)
- (setq more-ops (cdr more-ops)))
+ (dolist (op more-ops)
+ (unless (eq (car op) 'nobind)
+ (calculator-define-key (car op) 'calculator-op calculator-mode-map))
+ (push (if (eq (car op) 'nobind) (cdr op) op)
+ added-ops))
;; added-ops come first, but in correct order
(setq calculator-operators
(append (nreverse added-ops) calculator-operators))))
(cond ((or in-r out-r)
(concat (or in-r "=")
(if (equal in-r out-r) "="
- (or out-r "="))))
+ (or out-r "D"))))
(calculator-deg "D=")
(t "=="))))
(expr
"Convert the given STR to a number, according to the value of
`calculator-input-radix'."
(if calculator-input-radix
- (let ((radix
- (cdr (assq calculator-input-radix
- '((bin . 2) (oct . 8) (hex . 16)))))
- (i -1) (value 0) (new-value 0))
- ;; assume mostly valid input (e.g., characters in range)
- (while (< (setq i (1+ i)) (length str))
- (setq new-value
- (let* ((ch (upcase (aref str i)))
- (n (cond ((< ch ?0) nil)
- ((<= ch ?9) (- ch ?0))
- ((< ch ?A) nil)
- ((<= ch ?Z) (- ch (- ?A 10)))
- (t nil))))
- (if (and n (<= 0 n) (< n radix))
- (+ n (* radix value))
- (progn
- (calculator-message
- "Warning: Ignoring bad input character `%c'." ch)
- (sit-for 1)
- value))))
- (when (if (< new-value 0) (> value 0) (< value 0))
- (calculator-message "Warning: Overflow in input."))
- (setq value new-value))
- value)
- (car (read-from-string
- (cond ((equal "." str) "0.0")
- ((string-match-p "[eE][+-]?$" str) (concat str "0"))
- ((string-match-p "\\.[0-9]\\|[eE]" str) str)
- ((string-match-p "\\." str)
- ;; do this because Emacs reads "23." as an integer
- (concat str "0"))
- ((stringp str) (concat str ".0"))
- (t "0.0"))))))
+ (string-to-number str (cadr (assq calculator-input-radix
+ '((bin 2) (oct 8) (hex 16)))))
+ (let* ((str (replace-regexp-in-string
+ "\\.\\([^0-9].*\\)?$" ".0\\1" str))
+ (str (replace-regexp-in-string
+ "[eE][+-]?\\([^0-9].*\\)?$" "e0\\1" str)))
+ (string-to-number str))))
(defun calculator-push-curnum ()
"Push the numeric value of the displayed number to the stack."
no need for negative numbers since these are handled by unary
operators)."
(interactive)
- (if (and (not calculator-display-fragile)
+ (if (and (not calculator-input-radix)
+ (not calculator-display-fragile)
calculator-curnum
(string-match-p "[eE]$" calculator-curnum))
(calculator-digit)
(or calculator-display-fragile
(not (numberp (car calculator-stack)))))
(calculator-clear-fragile)
- (setq calculator-curnum (let ((calculator-displayer "%S"))
- (calculator-number-to-string val)))
+ (setq calculator-curnum
+ (let ((calculator-displayer "%S")
+ (calculator-radix-grouping-mode nil)
+ (calculator-output-radix calculator-input-radix))
+ (calculator-number-to-string val)))
(calculator-update-display)))
-(defun calculator-paste ()
- "Paste a value from the `kill-ring'."
- (interactive)
- (calculator-put-value
- (let ((str (replace-regexp-in-string
- "^ *\\(.+[^ ]\\) *$" "\\1" (current-kill 0))))
- (when (and (not calculator-input-radix)
- calculator-paste-decimals
- (string-match
- "\\([0-9]+\\)\\(\\.[0-9]+\\)?\\(e[0-9]+\\)?"
- str))
- (setq str (concat (or (match-string 1 str) "0")
- (or (match-string 2 str) ".0")
- (or (match-string 3 str) ""))))
- (ignore-errors (calculator-string-to-number str)))))
+(defun calculator-paste (arg)
+ "Paste a value from the `kill-ring'.
+
+With a prefix argument, paste the raw string as a sequence of key
+presses, which can be used to paste expressions. Note that this
+is literal; examples: spaces will store values, pasting \"1+2\"
+will not produce 3 if it's done you're entering a number or after
+a multiplication."
+ (interactive "P")
+ (let ((str (current-kill 0)))
+ (if arg
+ (setq unread-command-events
+ `(,@(listify-key-sequence str) ,@unread-command-events))
+ (calculator-put-value (calculator-string-to-number str)))))
(defun calculator-register-read-with-preview (prompt)
"Similar to `register-read-with-preview' but for calculator
* I inverse the next trig function \
* \\='/\"/{/} - display/display args
* D - switch to all-decimal, or toggle deg/rad mode
-* B/O/H/X - binary/octal/hex mode for i/o (X is a shortcut for H)
-* i/o - prefix for d/b/o/x - set only input/output modes
+* B/O/H/X - binary/octal/hex mode for i/o (both H and X are for hex)
+* i/o - prefix for D/B/O/X - set only input/output modes
* enter/= - evaluate current expr. * s/g - set/get a register
* space - evaluate & save on list * l/v - list total/average
* up/down/C-p/C-n - browse saved * C-delete - clear all saved
(if (eq last-command 'calculator-help)
(let ((mode-name "Calculator")
(major-mode 'calculator-mode)
- (g-map (current-global-map))
(win (selected-window)))
(require 'ehelp)
(if (not calculator-electric-mode)
(describe-mode)
- (progn (use-global-map calculator-saved-global-map)
- (electric-describe-mode)
- (use-global-map g-map)))
+ (electric-describe-mode))
(select-window win)
(message nil))
(let ((one (one-window-p t))