3 ;;; Copyright (C) 1999, 2000, 2002, 2003,
4 ;;; 2004, 2005, 2006, 2007, 2008 Thien-Thi Nguyen
5 ;;; This file is part of ttn's personal elisp library, released under GNU
6 ;;; GPL with ABSOLUTELY NO WARRANTY. See the file COPYING for details.
8 ;;; Description: Run GNU Go in a buffer.
15 ;; This file provides the command `gnugo' which allows you to play the game of
16 ;; go against the external program "gnugo" (http://www.gnu.org/software/gnugo)
17 ;; in a dedicated Emacs buffer, or to resume a game in progress. NOTE: In
18 ;; this file, to avoid confusion w/ elisp vars and funcs, we use the term "GNU
19 ;; Go" to refer to the process object created by running the external program.
21 ;; At the start of a new game, you can pass additional command-line arguments
22 ;; to GNU Go to specify level, board size, color, komi, handicap, etc. By
23 ;; default GNU Go plays at level 10, board size 19, color white, and zero for
24 ;; both komi and handicap.
26 ;; To play a stone, move the cursor to the desired vertice and type `SPC' or
27 ;; `RET'; to pass, `P' (note: uppercase); to quit, `q'; to undo one of your
28 ;; moves (as well as a possibly intervening move by GNU Go), `u'. To undo
29 ;; back through an arbitrary stone that you played, place the cursor on a
30 ;; stone and type `U' (note: uppercase). Other keybindings are described in
31 ;; the `gnugo-board-mode' documentation, which you may view with the command
32 ;; `describe-mode' (normally `C-h m') in that buffer. The buffer name shows
33 ;; the last move and who is currently to play. Capture counts and other info
34 ;; are shown on the mode line immediately following the major mode name.
36 ;; While GNU Go is pondering its next move, certain commands that rely on its
37 ;; assistence will result in a "still waiting" error. Do not be alarmed; that
38 ;; is normal. When it is your turn again you may retry the command. In the
39 ;; meantime, you can use Emacs for other tasks, or start an entirely new game
40 ;; with `C-u M-x gnugo'. (NOTE: A new game will slow down all games. :-)
42 ;; If GNU Go should crash during a game the mode line will show "no process".
43 ;; Please report the event to the GNU Go maintainers so that they can improve
46 ;; This code was tested with:
47 ;; - GNU Emacs: 21.3 / 22.0.50 (from CVS)
48 ;; - GNU Go: 3.3.15 / 3.4 / 3.6
51 ;; Meta-Playing (aka Customizing)
52 ;; ------------------------------
54 ;; Customization is presently limited to
55 ;; vars: `gnugo-program'
56 ;; `gnugo-animation-string'
58 ;; `gnugo-X-face' `gnugo-O-face' `gnugo-grid-face'
60 ;; normal hooks: `gnugo-board-mode-hook'
61 ;; `gnugo-post-move-hook'
62 ;; and the keymap: `gnugo-board-mode-map'
64 ;; The variable `gnugo-xpms' is a special case. To set it you need to load
65 ;; gnugo-xpms.el (http://www.emacswiki.org) or some other library w/ congruent
69 ;; Meta-Meta-Playing (aka Hacking)
70 ;; -------------------------------
72 ;; You may wish to first fix the bugs:
73 ;; - `gnugo-toggle-dead-group' only half-complete; see docstring for details
74 ;; - probably sgf handling is not 100% to spec
75 ;; - subprocess should provide scoring details, gnugo.el not yet blissful
77 ;; Otherwise (we can live w/ some bugs), here are some ideas:
78 ;; - talk GTP over the network
79 ;; - "assist minor mode" (see gnugo-extra.el for work in progress)
80 ;; - using assist minor mode, gnugo-v-gnugo (ibid)
81 ;; - extract GNUGO Board mode and sgf stuff into sgf.el; make gnugo.el use it
82 ;; - make gnugo (the external program) support query (read-only) thread
83 ;; so as to be able to lift "still waiting" restriction
84 ;; - alternatively, extend GNUGO Board mode to manage another subprocess
85 ;; dedicated to analysis (no genmove)
86 ;; - command `C' to add a comment to the sgf tree
87 ;; - command `C-u =' to label a position
88 ;; - sgf tree display, traversal (belongs in sgf.el); review game history
89 ;; in another buffer; branch subgame tree at arbitrary point
90 ;; - subgame branch matriculation (maturity: child leaves the family)
91 ;; - dribble the sgf tree
92 ;; - "undo undo undoing"; integrate Emacs undo, GTP undo, subgame branching
93 ;; - make buffer name format configurable (but enforce uniqueness)
94 ;; - more tilde escapes for `gnugo-mode-line'
95 ;; - make veneration configurable
96 ;; - make animation more configurable; lift same-color-stones-only
97 ;; restriction; allow sequencing rather than lock-step; include sound
98 ;; - [your hacking ideas here]
100 ;; Some gnugo.el hackers update http://www.emacswiki.org -- check it out!
106 ;; Originally gnugo.el was written to interact w/ "gnugo --mode text" and then
107 ;; "gnugo --mode emacs" as the subprocess. Those versions were released as
108 ;; 1.x, w/ x < 14. In Novemeber 2002, gnugo.el was changed to interact w/
109 ;; "gnugo --mode gtp", but was released as 1.14 through 1.26, even though the
110 ;; proper versions should be 2.0.x for "--mode gtp", and 2.1.x for XPM image
111 ;; support. (Sorry about the confusion.)
113 ;; Thus we arrive at at the current version. The first gnugo.el to be
114 ;; released w/ a `gnugo-version' variable is "2.2.0". The versioning scheme
115 ;; is strictly monotonically increasing numbers and dots, no letters or other
116 ;; suffixes (and none of this even/odd crap). Here we list, aside from the
117 ;; bugfixes, some of the notable changes introduced in each released version:
119 ;; 2.2.x -- uncluttered, letters and numbers hidden, board centered
120 ;; buffer name shows last move and current player
121 ;; mode-line customization (var `gnugo-mode-line')
122 ;; new commands: `=', `h', `s', `F', `R', `l', `U', `C-c C-p'
123 ;; program option customization (var `gnugo-program')
124 ;; new hooks (vars `gnugo-post-move-hook', `gnugo-board-mode-hook')
125 ;; multiple independent buffers/games
126 ;; XPM set can be changed on the fly (global and/or local)
127 ;; font-locking for "X", "O", "[xo]"
128 ;; undo by N moves, by "move pair", or by board position
129 ;; grid (letters and numbers) visibility can be toggled
135 ;; If you are an elisp programmer, this section might not apply to you;
136 ;; the GPL allows you to define the future of the code you receive under
137 ;; its terms, as long as you do not deny that freedom to subsequent users.
139 ;; For users who are not elisp programmers, you can look forward to gradual
140 ;; refinement in 2.x, splitting into gnugo.el and sgf.el in 3.x, and then
141 ;; eventual merging into GNU Emacs for 4.x (if RMS gives it the thumbs-up).
142 ;; If it is not accepted into Emacs at that time, a new maintainer will be
143 ;; sought. In any case, it will no longer be bundled w/ ttn-pers-elisp.
147 (require 'cl) ; use the source luke!
148 (ignore-errors (require 'time-date)) ; for `time-subtract'
150 ;;;---------------------------------------------------------------------------
153 (defconst gnugo-version "2.2.13"
154 "Version of gnugo.el currently loaded.
155 Note that more than two dots in the value indicates \"pre-release\",
156 or \"alpha\" or \"hackers-invited-all-else-beware\"; use at your own risk!
157 The more dots the more courage/foolishness you must find to continue.
158 See source code for a history of what means what version-wise.")
160 ;;;---------------------------------------------------------------------------
161 ;;; Variables for the uninquisitive programmer
163 (defvar gnugo-program "gnugo"
164 "*Command to start an external program that speaks GTP, such as \"gnugo\".
165 The value may also be in the form \"PROGRAM OPTIONS...\" in which case the
166 the command `gnugo' will prefix OPTIONS in its default offering when it
167 queries you for additional options. It is an error for \"--mode\" to appear
170 For more information on GTP and GNU Go, feel free to visit:
171 http://www.gnu.org/software/gnugo")
173 (defvar gnugo-board-mode-map nil
174 "Keymap for GNUGO Board mode.")
176 (defvar gnugo-board-mode-hook nil
177 "*Hook run when entering GNUGO Board mode.")
179 (defvar gnugo-post-move-hook nil
180 "*Normal hook run after a move and before the board is refreshed.
181 Hook functions can prevent the call to `gnugo-refresh' by evaluating:
182 (setq inhibit-gnugo-refresh t)
183 Initially, when `run-hooks' is called, the current buffer is the GNUGO
184 Board buffer of the game. Hook functions that switch buffers must take
185 care not to call (directly or indirectly through some other function)
186 `gnugo-put' or `gnugo-get' after the switch.")
188 (defvar gnugo-animation-string
189 (let ((jam "*#") (blink " #") (spin "-\\|/") (yada "*-*!"))
190 (concat jam jam jam jam jam
191 ;; "SECRET MESSAGE HERE"
192 blink blink blink blink blink blink blink blink
193 ;; Playing go is like fighting ignorance: when you think you have
194 ;; surrounded something by knowing it very well it often turns
195 ;; out that in the time you spent deepening this understanding,
196 ;; other areas of ignorance have surrounded you.
197 spin spin spin spin spin spin spin spin spin
198 ;; Playing go is not like fighting ignorance: what one person
199 ;; knows many people may come to know; knowledge does not build
200 ;; solely move by move. Wisdom, on the other hand...
202 "*String whose individual characters are used for animation.
203 Specifically, the commands `gnugo-worm-stones' and `gnugo-dragon-stones'
204 render the stones in their respective result groups as the first character
205 in the string, then the next, and so on.")
207 (defvar gnugo-mode-line "~b ~w :~m :~u"
208 "*A `mode-line-format'-compliant value for GNUGO Board mode.
209 If a single string, the following special escape sequences are
210 replaced with their associated information:
211 ~b,~w black,white captures (a number)
212 ~p current player (black or white)
214 ~t time waiting for the current move
215 ~u time taken for the Ultimate (most recent) move
216 The times are in seconds, or \"-\" if that information is not available.
217 For ~t, the value is a snapshot, use `gnugo-refresh' to update it.")
219 (defvar gnugo-X-face 'font-lock-string-face
220 "*Name of face to use for X (black) stones.")
222 (defvar gnugo-O-face 'font-lock-builtin-face
223 "*Name of face to use for O (white) stones.")
225 (defvar gnugo-grid-face 'default
226 "*Name of face to use for the grid (A B C ... 1 2 3 ...).")
228 ;;;---------------------------------------------------------------------------
229 ;;; Variables for the inquisitive programmer
231 (defconst gnugo-font-lock-keywords
232 '(("X" . gnugo-X-face)
233 ("O" . gnugo-O-face))
234 "Font lock keywords for `gnugo-board-mode'.")
236 (defvar gnugo-option-history nil)
238 (defvar gnugo-state nil) ; hint: C-c C-p
241 (defvar gnugo-xpms nil))
243 ;;;---------------------------------------------------------------------------
244 ;;; In case Emacs is lacking
246 (unless (fboundp 'delete-dups)
247 (defun delete-dups (list) ; from repo 2004-10-29
248 "Destructively remove `equal' duplicates from LIST.
249 Store the result in LIST and return it. LIST must be a proper list.
250 Of several `equal' occurrences of an element in LIST, the first
254 (setcdr tail (delete (car tail) (cdr tail)))
255 (setq tail (cdr tail))))
258 (unless (fboundp 'time-subtract)
259 (defun time-subtract (t1 t2) ; from repo 2004-10-29
260 "Subtract two time values.
261 Return the difference in the format of a time value."
262 (let ((borrow (< (cadr t1) (cadr t2))))
263 (list (- (car t1) (car t2) (if borrow 1 0))
264 (- (+ (if borrow 65536 0) (cadr t1)) (cadr t2))))))
266 (unless (fboundp 'window-edges)
267 (defun window-edges (&optional window)
268 (let ((cw (/ (frame-pixel-width) (frame-width)))
269 (ch (/ (frame-pixel-height) (frame-height)))
270 (pix-edges (window-pixel-edges window)))
271 (list (/ (nth 0 pix-edges) cw)
272 (/ (nth 1 pix-edges) ch)
273 (/ (nth 2 pix-edges) cw)
274 (/ (nth 3 pix-edges) ch)))))
276 ;;;---------------------------------------------------------------------------
277 ;;; Support functions
279 (put 'gnugo-put 'lisp-indent-function 1)
280 (defun gnugo-put (key value) (puthash key value gnugo-state))
281 (defun gnugo-get (key) (gethash key gnugo-state))
283 (let ((docs "Put or get move/game/board-specific properties.
284 \(This docstring is shared by `gnugo-put' and `gnugo-get'.\)
286 There are many properties, each named by a keyword, that record and control
287 how gnugo.el manages each game. Each GNUGO Board buffer has its own set
288 of properties, stored in the hash table `gnugo-state'. Here we document
289 some of the more stable properties. You may wish to use them as part of
290 a `gnugo-post-move-hook' function, for example. Be careful to preserve
291 the current buffer as `gnugo-state' is made into a buffer-local variable.
292 NOTE: In the following, \"see foo\" actually means \"see foo source or
293 you may never really understand to any degree of personal satisfaction\".
295 :proc -- subprocess named \"gnugo\", \"gnugo<1>\" and so forth
297 :diamond -- the part of the subprocess name after \"gnugo\", may be \"\"
299 :game-over -- nil until game over at which time its value is set to
300 the alist `((live GROUP ...) (dead GROUP ...))'
302 :sgf-collection -- after a `loadsgf' command, entire parse tree of file,
303 a simple list of one or more gametrees, updated in
304 conjunction w/ :sgf-gametree and :monkey
306 :sgf-gametree -- one of the gametrees in :sgf-collection
308 :monkey -- vector of three elements: LOC, a pointer to a node on the
309 :sgf-gametree representing the most recently-played move
310 (the next move modifies the cdr of LOC); MEM, the simple
311 reverse-chronological list of previous LOC pointers; and
312 COUNT, the number of moves from the beginning of the game
314 :gnugo-color -- either \"black\" or \"white\"
318 :last-waiting -- seconds and time value, respectively; see `gnugo-push-move'
321 :black-captures -- these are strings since gnugo.el doesn't do anything
322 :white-captures w/ the information besides display it in the mode line;
323 gory details in functions `gnugo-propertize-board-buffer'
324 and `gnugo-merge-showboard-results' (almost more effort
325 than they are worth!)
327 :display-using-images -- XPMs, to be precise; see functions `gnugo-yy',
328 `gnugo-toggle-image-display' and `gnugo-refresh',
329 as well as gnugo-xpms.el (available elsewhere)
331 :all-yy -- list of 46 keywords used as the `category' text property
332 (so that their plists, typically w/ property `display' or
333 `do-not-display') are consulted by the Emacs display engine;
334 46 = 9 places * (4 moku + 1 empty) + 1 hoshi; see functions
335 `gnugo-toggle-image-display', `gnugo-yy' and `gnugo-yang'
337 :lparen-ov -- overlays shuffled about to indicate the last move; only
338 :rparen-ov one is used when displaying using images
340 :last-user-bpos -- board position; keep the hapless human happy
342 As things stabilize probably more info will be added to this docstring."))
343 (put 'gnugo-put 'function-documentation docs)
344 (put 'gnugo-get 'function-documentation docs))
346 (defun gnugo-describe-internal-properties ()
347 "Pretty-print `gnugo-state' properties in another buffer.
348 Handle the big, slow-to-render, and/or uninteresting ones specially."
350 (let ((buf (current-buffer))
351 (d (gnugo-get :diamond))
353 (maphash (lambda (&rest args)
356 (setcdr args (format "hash: %X (%d images)"
358 (length (cadr args)))))
360 (setcdr args (length (cadr args))))
362 (let* ((value (cadr args))
363 (loc (aref value 0)))
365 (length (aref value 1))
368 (setq acc (cons args acc)))
370 (switch-to-buffer (get-buffer-create
371 (format "%s*GNUGO Board Properties*"
372 (gnugo-get :diamond))))
375 (setq truncate-lines t)
377 (let ((standard-output (current-buffer)))
379 (goto-char (point-min))
380 (let ((rx (format "overlay from \\([0-9]+\\).+\n%s\\s-+"
384 (while (re-search-forward rx (point-max) t)
385 (let ((pos (get-text-property (string-to-number (match-string 1))
386 'gnugo-position buf)))
387 (delete-region (+ 2 (match-beginning 0)) (point))
388 (insert (format " %S" pos))))))
389 (message "%d properties" (length acc))))
391 (defun gnugo-board-buffer-p (&optional buffer)
392 "Return non-nil if BUFFER is a GNUGO Board buffer."
393 (with-current-buffer (or buffer (current-buffer)) gnugo-state))
395 (defun gnugo-board-user-play-ok-p (&optional buffer)
396 "Return non-nil if BUFFER is a GNUGO Board buffer ready for a user move."
397 (with-current-buffer (or buffer (current-buffer))
398 (and gnugo-state (not (gnugo-get :waitingp)))))
400 (defun gnugo-other (color)
401 (if (string= "black" color) "white" "black"))
403 (defun gnugo-gate (&optional in-progress-p)
404 (unless (gnugo-board-buffer-p)
405 (error "Wrong buffer -- try M-x gnugo"))
406 (unless (gnugo-get :proc)
407 (error "No \"gnugo\" process!"))
408 (when (gnugo-get :waitingp)
409 (error "Not your turn yet -- please wait for \"\(%s to play\)\""
410 (gnugo-get :user-color)))
411 (when (and (gnugo-get :game-over) in-progress-p)
412 (error "Sorry, game over")))
414 (defun gnugo-sentinel (proc string)
415 (let ((status (process-status proc)))
416 (when (or (eq status 'exit)
418 (let ((buf (process-buffer proc)))
419 (when (buffer-live-p buf)
420 (with-current-buffer buf
421 (setq mode-line-process '( " [%s]"))
422 (when (eq proc (gnugo-get :proc))
423 (gnugo-put :proc nil))))))))
425 (defun gnugo-send-line (line)
426 (let ((proc (gnugo-get :proc)))
427 (process-send-string proc line)
428 (process-send-string proc "\n")))
430 (defun gnugo-synchronous-send/return (message)
431 "Return (TIME . STRING) where TIME is that returned by `current-time' and
432 STRING omits the two trailing newlines. See also `gnugo-query'."
433 (when (gnugo-get :waitingp)
434 (error "Sorry, still waiting for %s to play" (gnugo-get :gnugo-color)))
435 (gnugo-put :sync-return "")
436 (let ((proc (gnugo-get :proc)))
438 proc (lambda (proc string)
439 (let* ((so-far (gnugo-get :sync-return))
440 (start (max 0 (- (length so-far) 2))) ; backtrack a little
441 (full (gnugo-put :sync-return (concat so-far string))))
442 (when (string-match "\n\n" full start)
443 (gnugo-put :sync-return
444 (cons (current-time) (substring full 0 -2)))))))
445 (gnugo-send-line message)
447 ;; type change => break
448 (while (stringp (setq rv (gnugo-get :sync-return)))
449 (accept-process-output proc))
450 (gnugo-put :sync-return "")
453 (defun gnugo-query (message-format &rest args)
454 "Return cleaned-up value of a call to `gnugo-synchronous-send/return'.
455 The TIME portion is omitted as well as the first two characters of the STRING
456 portion (corresponding to the status indicator in the Go Text Protocol). Use
457 this function when you are sure the command cannot fail. The first arg is
458 a format string applied to the rest of the args."
459 (substring (cdr (gnugo-synchronous-send/return
460 (apply 'format message-format args)))
463 (defun gnugo-lsquery (message-format &rest args)
464 (split-string (apply 'gnugo-query message-format args)))
466 (defsubst gnugo-treeroot (prop)
467 (cdr (assq prop (car (gnugo-get :sgf-gametree)))))
469 (defun gnugo-goto-pos (pos)
470 "Move point to board position POS, a letter-number string."
471 (goto-char (point-min))
472 (forward-line (- (1+ (gnugo-treeroot :SZ))
473 (string-to-number (substring pos 1))))
475 (forward-char (+ (if (= 32 (following-char)) 1 2)
476 (* 2 (- (let ((letter (aref pos 0)))
482 (defun gnugo-f (frag)
483 (intern (format ":gnugo-%s%s-props" (gnugo-get :diamond) frag)))
485 (defun gnugo-yang (c)
486 (cdr (assq c '((?+ . hoshi)
488 (?X . (bmoku . bpmoku))
489 (?O . (wmoku . wpmoku))))))
491 (defun gnugo-yy (yin yang &optional momentaryp)
492 (gnugo-f (format "%d-%s"
493 yin (cond ((and (consp yang) momentaryp) (cdr yang))
494 ((consp yang) (car yang))
497 (defun gnugo-toggle-image-display ()
498 (unless (and (fboundp 'display-images-p) (display-images-p))
499 (error "Display does not support images, sorry"))
500 (require 'gnugo-xpms)
501 (unless (and (boundp 'gnugo-xpms) gnugo-xpms)
502 (error "Could not load `gnugo-xpms', sorry"))
503 (let ((fresh (or (gnugo-get :local-xpms) gnugo-xpms)))
504 (unless (eq fresh (gnugo-get :xpms))
505 (gnugo-put :xpms fresh)
506 (gnugo-put :all-yy nil)))
507 (let* ((new (not (gnugo-get :display-using-images)))
508 (act (if new 'display 'do-not-display)))
510 (setcar (symbol-plist yy) act))
511 (or (gnugo-get :all-yy)
513 (prog1 (mapcar (lambda (ent)
515 (yy (gnugo-yy (cdr k) (car k))))
516 (setplist yy `(not-yet ,(cdr ent)))
519 (let ((imul (image-size (get (gnugo-yy 5 (gnugo-yang ?+))
521 (gnugo-put :w-imul (car imul))
522 (gnugo-put :h-imul (cdr imul)))))))
523 (setplist (gnugo-f 'ispc) (and new
524 ;; `(display (space :width 0))'
525 ;; works as well, for newer emacs
527 (gnugo-put :highlight-last-move-spec
530 (get (gnugo-yy (get-text-property p 'gnugo-yin)
531 (get-text-property p 'gnugo-yang)
535 (gnugo-get :default-highlight-last-move-spec)))
536 ;; a kludge to be reworked another time perhaps by another gnugo.el lover
537 (dolist (group (cdr (assq 'dead (gnugo-get :game-over))))
538 (mapc 'delete-overlay (cdar group))
539 (setcdr (car group) nil))
540 (gnugo-put :wmul (if new (gnugo-get :w-imul) 1))
541 (gnugo-put :hmul (if new (gnugo-get :h-imul) 1))
542 (gnugo-put :display-using-images new)))
544 (defun gnugo-toggle-grid ()
545 "Turn the grid around the board on or off."
547 (funcall (if (memq :nogrid buffer-invisibility-spec)
548 'remove-from-invisibility-spec
549 'add-to-invisibility-spec)
551 (save-excursion (gnugo-refresh)))
553 (defun gnugo-propertize-board-buffer ()
555 (insert (substring (cdr (gnugo-synchronous-send/return "showboard")) 3))
556 (let* ((grid-props (list 'invisible :nogrid
557 'font-lock-face gnugo-grid-face))
558 (%gpad (gnugo-f 'gpad))
559 (%gspc (gnugo-f 'gspc))
560 (%lpad (gnugo-f 'lpad))
561 (%rpad (gnugo-f 'rpad))
562 (ispc-props (list 'category (gnugo-f 'ispc) 'rear-nonsticky t))
563 (size (gnugo-treeroot :SZ))
564 (size-string (number-to-string size)))
565 (goto-char (point-min))
566 (put-text-property (point) (1+ (point)) 'category (gnugo-f 'tpad))
567 (skip-chars-forward " ")
568 (put-text-property (1- (point)) (point) 'category %gpad)
569 (put-text-property (point) (progn (end-of-line) (point)) 'category %gspc)
571 (add-text-properties (1+ (point-min)) (1- (point)) grid-props)
572 (while (looking-at "\\s-*\\([0-9]+\\)[ ]")
573 (let* ((row (match-string-no-properties 1))
575 (other-edge (+ edge (* 2 size) -1))
576 (right-empty (+ other-edge (length row) 1))
577 (top-p (string= size-string row))
578 (bot-p (string= "1" row)))
579 (let* ((nL (- edge 1 (length size-string)))
581 (ov (make-overlay nL nR (current-buffer) t)))
582 (add-text-properties nL nR grid-props)
583 ;; We redundantly set `invisible' in the overlay to workaround
584 ;; a display bug whereby text *following* the overlaid text is
585 ;; displayed with the face of the overlaid text, but only when
586 ;; that text is invisible (i.e., `:nogrid' in invisibility spec).
587 ;; This has something to do w/ the bletcherous `before-string'.
588 (overlay-put ov 'invisible :nogrid)
589 (overlay-put ov 'category %lpad))
590 (do ((p edge (+ 2 p)) (ival 'even (if (eq 'even ival) 'odd 'even)))
592 (let* ((position (format "%c%s" (aref "ABCDEFGHJKLMNOPQRST"
593 (truncate (- p edge) 2))
595 (yin (let ((A-p (= edge p))
596 (Z-p (= (1- other-edge) p)))
597 (cond ((and top-p A-p) 1)
606 (yang (gnugo-yang (char-after p))))
607 (add-text-properties p (1+ p)
617 (gnugo-position gnugo-yin))))
618 (unless (= (1- other-edge) p)
619 (add-text-properties (1+ p) (+ 2 p) ispc-props)
620 (put-text-property p (+ 2 p) 'intangible ival)))
621 (add-text-properties (1+ other-edge) right-empty grid-props)
622 (goto-char right-empty)
623 (when (looking-at "\\s-+\\(WH\\|BL\\).*capt.* \\([0-9]+\\).*$")
624 (let ((prop (if (string= "WH" (match-string 1))
627 (beg (match-beginning 2))
629 (put-text-property beg end :gnugo-cf (cons (- end beg) prop))
630 (gnugo-put prop (match-string-no-properties 2))))
632 (put-text-property right-empty (point) 'category %rpad)
634 (add-text-properties (1- (point)) (point-max) grid-props)
635 (skip-chars-forward " ")
636 (put-text-property (1- (point)) (point) 'category %gpad)
637 (put-text-property (point) (progn (end-of-line) (point))
640 (defun gnugo-merge-showboard-results ()
641 (let ((aft (substring (cdr (gnugo-synchronous-send/return "showboard")) 3))
642 (adj 1) ; string to buffer position adjustment
643 (sync "[0-9]+ stones$")
644 (bef (buffer-substring-no-properties (point-min) (point-max)))
645 (bef-start 0) (bef-idx 0)
646 (aft-start 0) (aft-idx 0)
647 aft-sync-backtrack mis inc cut new very-strange)
648 (while (numberp (setq mis (compare-strings bef bef-start nil
650 (setq aft-sync-backtrack nil
654 bef-idx (+ bef-start inc)
655 aft-idx (+ aft-start inc)
656 bef-start (if (eq bef-idx (string-match sync bef bef-idx))
659 aft-start (if (and (eq aft-idx (string-match sync aft aft-idx))
660 (let ((peek (1- aft-idx)))
661 (while (not (= 32 (aref aft peek)))
662 (setq peek (1- peek)))
663 (setq aft-sync-backtrack (1+ peek))))
667 (if aft-sync-backtrack
668 (- aft-sync-backtrack aft-idx)
671 (if aft-sync-backtrack
672 (let* ((asb aft-sync-backtrack)
673 (l-p (get-text-property cut :gnugo-cf))
676 (keep (text-properties-at cut)))
677 (setq new (substring aft asb (string-match " " aft asb)))
678 (plist-put keep :gnugo-cf (cons (length new) capprop))
679 (gnugo-put capprop new)
680 (delete-char old-len)
681 (insert (apply 'propertize new keep))
682 (setq adj (+ adj (- (length new) old-len))))
683 (setq new (aref aft aft-idx))
684 (insert-and-inherit (char-to-string new))
685 (let ((yin (get-text-property cut 'gnugo-yin))
686 (yang (gnugo-yang new)))
687 (add-text-properties cut (1+ cut)
691 ,(gnugo-yy yin yang))))
693 ;; do this last to avoid complications w/ font lock
694 ;; (this also means we cannot include `intangible' in `front-sticky')
695 (when (setq very-strange (get-text-property (1+ cut) 'intangible))
696 (put-text-property cut (1+ cut) 'intangible very-strange))))))
698 (defun gnugo-move-history (&optional rsel)
699 "Determine and return the game's move history.
700 Optional arg RSEL controls side effects and return value.
701 If nil, display the history in the echo area as \"(N moves)\"
702 followed by the space-separated list of moves. When called
703 interactively with a prefix arg (i.e., RSEL is `(4)'), display
704 similarly, but suffix with the mover (either \":B\" or \":W\").
705 If RSEL is the symbol `car' return the most-recent move; if
706 `cadr', the next-to-most-recent move; if `count' the number of
709 For all other values of RSEL, do nothing and return nil."
711 (let ((size (gnugo-treeroot :SZ))
713 (mem (aref (gnugo-get :monkey) 1))
715 (flet ((as-pos (cc) (if (string= "tt" cc)
717 (setq col (aref cc 0))
719 (+ ?A (- (if (> ?i col) col (1+ col)) ?a))
720 (- size (- (aref cc 1) ?a)))))
721 (next (byp) (when (setq node (caar mem)
722 mprop (or (assq :B node)
724 (setq move (as-pos (cdr mprop))
727 (format "%s%s" move (car mprop))
730 (tell () (message "(%d moves) %s"
732 (mapconcat 'identity (nreverse acc) " "))))
734 ((not rsel) (while (next nil)) (tell))
735 ((equal '(4) rsel) (while (next t)) (tell))
736 ((eq 'car rsel) (car (next nil)))
737 ((eq 'cadr rsel) (next nil) (car (next nil)))
738 ((eq 'count rsel) (aref (gnugo-get :monkey) 2))))))
740 (defun gnugo-note (property value &optional movep mogrifyp)
742 (let ((sz (gnugo-treeroot :SZ)))
743 (flet ((mog (pos) (if (string= "PASS" pos)
745 (let* ((col (aref pos 0))
746 (one (+ ?a (- col (if (< ?H col) 1 0) ?A)))
747 (two (+ ?a (- sz (string-to-number
748 (substring pos 1))))))
749 (format "%c%c" one two)))))
750 (setq value (if (consp value)
753 (let* ((fruit (list (cons property value)))
754 (monkey (gnugo-get :monkey))
755 (loc (aref monkey 0)))
757 (let ((mem (aref monkey 1)))
758 ;; todo: do variation check/merge/branch here.
759 (setcdr loc (list fruit))
760 (aset monkey 0 (setq loc (cdr loc)))
761 (aset monkey 1 (cons loc mem))
762 (aset monkey 2 (1+ (aref monkey 2))))
763 (setcdr (last (car loc)) fruit))))
765 (defun gnugo-close-game (end-time resign)
766 (gnugo-put :game-end-time end-time)
767 (let ((now (or end-time (current-time))))
768 (gnugo-put :scoring-seed (logior (ash (logand (car now) 255) 16)
770 (gnugo-put :game-over
771 (if (or (eq t resign)
772 (and (stringp resign)
773 (string-match "[BW][+][Rr]esign" resign)))
774 (flet ((ls (color) (mapcar
779 (gnugo-query "worm_stones %s" color)
781 (let ((live (append (ls "black") (ls "white"))))
784 (let ((dd (gnugo-query "dragon_data"))
785 (start 0) mem color ent live dead)
786 (while (string-match "\\(.+\\):\n[^ ]+[ ]+\\(black\\|white\\)\n"
788 (setq mem (match-string 1 dd)
789 color (match-string 2 dd)
791 ent (cons (list color)
792 (sort (gnugo-lsquery "dragon_stones %s" mem)
794 (string-match "\nstatus[ ]+\\(\\(ALIVE\\)\\|[A-Z]+\\)\n"
796 (if (match-string 2 dd)
799 (setq start (match-end 0)))
803 (defun gnugo-push-move (userp move)
804 (let* ((color (gnugo-get (if userp :user-color :gnugo-color)))
805 (start (gnugo-get :waiting-start))
807 (resignp (string= "resign" move))
808 (passp (string= "PASS" move))
809 (head (gnugo-move-history 'car))
810 (onep (and head (string= "PASS" head)))
811 (donep (or resignp (and onep passp))))
813 (gnugo-merge-showboard-results))
814 (gnugo-put :last-mover color)
816 (gnugo-put :last-user-bpos (and (not passp) (not resignp) move)))
817 (gnugo-note (if (string= "black" color) :B :W) move t (not resignp))
819 (gnugo-note :EV "resignation"))
821 (gnugo-put :last-waiting (cadr (time-subtract now start))))
823 (gnugo-close-game now resignp))
824 (gnugo-put :waiting-start (and (not donep) now))
827 (defun gnugo-venerate (yin yang)
828 (let* ((fg-yy (gnugo-yy yin yang))
829 (fg-disp (or (get fg-yy 'display)
830 (get fg-yy 'do-not-display)))
831 (fg-data (plist-get (cdr fg-disp) :data))
832 (bg-yy (gnugo-yy yin (gnugo-yang ?.)))
833 (bg-disp (or (get bg-yy 'display)
834 (get bg-yy 'do-not-display)))
835 (bg-data (plist-get (cdr bg-disp) :data))
839 (when (string-match "\\([0-9]+\\)\\s-+[0-9]+\"," s)
840 (setq start (match-end 0))
841 (string-to-number (match-string 1 s)))))
842 (while (and (<= 0 ncolors) (string-match ",\n" s start))
843 (setq start (match-end 0)
844 ncolors (1- ncolors)))
845 (string-match "\"" s start)
847 (new (copy-sequence fg-data))
848 (lx (length fg-data))
849 (lb (length bg-data))
850 (sx (funcall bop fg-data))
851 (sb (funcall bop bg-data))
852 (color-key (aref new sx))) ; blech, heuristic
854 (when (and (not (= color-key (aref new sx)))
856 (aset new sx (aref bg-data sb)))
859 (create-image new 'xpm t :ascent 'center)))
861 (defun gnugo-refresh (&optional nocache)
862 "Update GNUGO Board buffer display.
863 While a game is in progress, parenthesize the last-played stone (no parens
864 for pass). If the buffer is currently displayed in the selected window,
865 recenter the board (presuming there is extra space in the window). Update
866 the mode line. Lastly, move point to the last position played by the user,
867 if that move was not a pass.
869 Prefix arg NOCACHE requests complete reconstruction of the display, which may
870 be slow. (This should normally be unnecessary; specify it only if the display
871 seems corrupted.) NOCACHE is silently ignored when GNU Go is thinking about
874 (when (and nocache (not (gnugo-get :waitingp)))
875 (gnugo-propertize-board-buffer))
876 (let* ((last-mover (gnugo-get :last-mover))
877 (other (gnugo-other last-mover))
878 (move (gnugo-move-history 'car))
879 (game-over (gnugo-get :game-over))
883 (let ((l-ov (gnugo-get :lparen-ov))
884 (r-ov (gnugo-get :rparen-ov)))
885 (if (member move '("PASS" "resign"))
886 (mapc 'delete-overlay (list l-ov r-ov))
887 (gnugo-goto-pos move)
889 (hspec (gnugo-get :highlight-last-move-spec))
890 (display-value (nth 0 hspec))
891 (l-offset (nth 1 hspec))
892 (l-new-pos (+ p l-offset))
893 (r-action (nth 2 hspec)))
894 (overlay-put l-ov 'display
895 (if (functionp display-value)
896 (funcall display-value p)
898 (move-overlay l-ov l-new-pos (1+ l-new-pos))
900 (funcall r-action r-ov)
901 (move-overlay r-ov (+ l-new-pos 2) (+ l-new-pos 3)))))))
903 (rename-buffer (concat (gnugo-get :diamond)
905 (format "%s(game over)"
906 (if (string= move "resign")
907 (concat move "ation ")
909 (format "%s(%s to play)"
910 (if move (concat move " ") "")
914 (let ((live (cdr (assq 'live game-over)))
915 (dead (cdr (assq 'dead game-over)))
917 (unless (eq game-over (get-text-property 1 'game-over))
918 (dolist (group (append live dead))
919 (dolist (pos (cdr group))
922 (put-text-property p (1+ p) 'group group)))
923 (put-text-property 1 2 'game-over game-over))
925 (when (setq pall (cdar group))
926 (mapc 'delete-overlay pall)
927 (setcdr (car group) nil)))
930 (let (ov pall c (color (caar group)))
931 (setq c (if (string= "black" color) "x" "o"))
932 (dolist (pos (cdr group))
934 (setq p (point) ov (make-overlay p (1+ p)))
937 (if (gnugo-get :display-using-images)
938 ;; respect the dead individually; it takes more time
939 ;; but that's not a problem (for them)
940 (gnugo-venerate (get-text-property p 'gnugo-yin)
941 (gnugo-yang (aref (upcase c) 0)))
942 (propertize c 'face 'font-lock-warning-face)))
944 (setcdr (car group) pall))))))
946 (when (setq window (get-buffer-window (current-buffer)))
947 (let* ((gridp (not (memq :nogrid buffer-invisibility-spec)))
948 (size (gnugo-treeroot :SZ))
949 (under10p (< size 10))
950 (h (- (truncate (- (window-height window)
951 (* size (gnugo-get :hmul))
955 (edges (window-edges window))
956 (right-w-edge (nth 2 edges))
957 (avail-width (- right-w-edge (nth 0 edges)))
958 (wmul (gnugo-get :wmul))
959 (imagesp (symbol-plist (gnugo-f 'ispc)))
965 2 ; between board and grid
970 (dolist (pair `((tpad . ,(if (and h (< 0 h))
971 `(display ,(make-string h 10))
972 '(invisible :nogrid)))
977 (cond (imagesp (+ (* 0.5 wmul)
983 (gspc . ,(when imagesp
984 `(display (space-width ,(- wmul 1.0)))))
985 (lpad . ,(let ((d `(display (space :align-to ,w))))
986 ;; We distinguish between these cases to
987 ;; workaround a display bug whereby the
988 ;; `before-string' is omitted entirely (not
989 ;; rendered) when interacting w/ the text
990 ;; mode last-move left-paren for moves in
994 ,(apply 'propertize " " d))
997 (space :align-to ,(1- avail-width))))))
998 (setplist (gnugo-f (car pair)) (cdr pair)))))
1000 (let ((cur (gnugo-get :mode-line)))
1001 (unless (equal cur gnugo-mode-line)
1002 (setq cur gnugo-mode-line)
1003 (gnugo-put :mode-line cur)
1004 (gnugo-put :mode-line-form
1005 (cond ((stringp cur)
1006 (setq cur (copy-sequence cur))
1008 (while (setq cut (string-match "~[bwpmtu]" cur))
1010 (setq cut (1+ cut) c (aref cur cut))
1013 `(,(intern (format "squig-%c" c))
1015 (?b '(or (gnugo-get :black-captures) 0))
1016 (?w '(or (gnugo-get :white-captures) 0))
1017 (?p '(gnugo-other (gnugo-get :last-mover)))
1018 (?t '(let ((ws (gnugo-get :waiting-start)))
1020 (cadr (time-since ws))
1022 (?u '(or (gnugo-get :last-waiting) "-"))
1023 (?m '(gnugo-move-history 'count))))
1025 `(let ,(delete-dups (copy-sequence acc))
1026 (format ,cur ,@(reverse (mapcar 'car acc))))))
1028 (let ((form (gnugo-get :mode-line-form)))
1029 (setq mode-line-process
1031 ;; this dynamicism is nice but excessive in its wantonness
1032 ;;- `(" [" (:eval ,form) "]")
1033 ;; this dynamicism is ok because the user triggers it
1034 (list (format " [%s]" (eval form))))))
1035 (force-mode-line-update))
1037 (when (setq last (gnugo-get :last-user-bpos))
1038 (gnugo-goto-pos last))))
1040 ;;;---------------------------------------------------------------------------
1041 ;;; Game play actions
1043 (defun gnugo-get-move-insertion-filter (proc string)
1044 (with-current-buffer (process-buffer proc)
1045 (let* ((so-far (gnugo-get :get-move-string))
1046 (full (gnugo-put :get-move-string (concat so-far string))))
1047 (when (string-match "^= \\(.+\\)\n\n" full)
1048 (let ((pos-or-pass (match-string 1 full)))
1049 (gnugo-put :get-move-string nil)
1050 (gnugo-put :waitingp nil)
1051 (gnugo-push-move nil pos-or-pass)
1052 (let ((buf (current-buffer)))
1053 (let (inhibit-gnugo-refresh)
1054 (run-hooks 'gnugo-post-move-hook)
1055 (unless inhibit-gnugo-refresh
1056 (with-current-buffer buf
1057 (gnugo-refresh))))))))))
1059 (defun gnugo-get-move (color)
1060 (gnugo-put :waitingp t)
1061 (set-process-filter (gnugo-get :proc) 'gnugo-get-move-insertion-filter)
1062 (gnugo-send-line (concat "genmove " color))
1063 (accept-process-output))
1065 (defun gnugo-cleanup ()
1066 (when (gnugo-board-buffer-p)
1067 (unless (= 0 (buffer-size))
1068 (message "Thank you for playing GNU Go."))
1070 (setplist sym nil) ; "...is next to fordliness." --Huxley
1072 (append (gnugo-get :all-yy)
1081 (setq gnugo-state nil)))
1083 (defun gnugo-position ()
1084 (or (get-text-property (point) 'gnugo-position)
1085 (error "Not a proper position point")))
1087 (defun gnugo-move ()
1088 "Make a move on the GNUGO Board buffer.
1089 The position is computed from current point.
1090 Signal error if done out-of-turn or if game-over.
1091 To start a game try M-x gnugo."
1094 (let* ((buf (current-buffer))
1095 (pos (gnugo-position))
1096 (move (format "play %s %s" (gnugo-get :user-color) pos))
1097 (accept (cdr (gnugo-synchronous-send/return move))))
1098 (unless (= ?= (aref accept 0))
1099 (error "%s" accept))
1100 (gnugo-push-move t pos) ; value always nil for non-pass move
1101 (let (inhibit-gnugo-refresh)
1102 (run-hooks 'gnugo-post-move-hook)
1103 (unless inhibit-gnugo-refresh
1104 (with-current-buffer buf
1106 (with-current-buffer buf
1107 (gnugo-get-move (gnugo-get :gnugo-color)))))
1109 (defun gnugo-mouse-move (e)
1110 "Do `gnugo-move' at mouse location."
1113 (when (looking-at "[.+]")
1116 (defun gnugo-pass ()
1117 "Make a pass on the GNUGO Board buffer.
1118 Signal error if done out-of-turn or if game-over.
1119 To start a game try M-x gnugo."
1122 (let ((accept (cdr (gnugo-synchronous-send/return
1123 (format "play %s PASS" (gnugo-get :user-color))))))
1124 (unless (= ?= (aref accept 0))
1125 (error "%s" accept)))
1126 (let ((donep (gnugo-push-move t "PASS"))
1127 (buf (current-buffer)))
1128 (let (inhibit-gnugo-refresh)
1129 (run-hooks 'gnugo-post-move-hook)
1130 (unless inhibit-gnugo-refresh
1131 (with-current-buffer buf
1134 (with-current-buffer buf
1135 (gnugo-get-move (gnugo-get :gnugo-color))))))
1137 (defun gnugo-mouse-pass (e)
1138 "Do `gnugo-pass' at mouse location."
1143 (defun gnugo-resign ()
1146 (if (not (y-or-n-p "Resign? "))
1147 (message "(not resigning)")
1148 (gnugo-push-move t "resign")
1151 (defun gnugo-animate-group (command)
1152 (message "Computing %s ..." command)
1153 (let* ((pos (gnugo-position))
1154 (stones (if (memq (char-after) '(?X ?O))
1155 (gnugo-lsquery "%s %s" command pos)
1156 (error "No stone at %s" pos))))
1157 (message "Computing %s ... %s in group." command (length stones))
1158 (setplist (gnugo-f 'anim) nil)
1159 (let* ((spec (let ((spec
1160 ;; `(split-string gnugo-animation-string "" t)'
1161 ;; works as well, for newer emacs versions
1162 (delete "" (split-string gnugo-animation-string ""))))
1163 (cond ((gnugo-get :display-using-images)
1164 (let* ((yin (get-text-property (point) 'gnugo-yin))
1165 (yang (gnugo-yang (char-after)))
1166 (up (get (gnugo-yy yin yang t) 'display))
1167 (dn (get (gnugo-yy yin yang) 'display))
1170 (if (setq flip-flop (not flip-flop))
1172 (mapcar 'string-to-char spec))))
1175 (ovs (save-excursion
1176 (mapcar (lambda (pos)
1177 (gnugo-goto-pos pos)
1179 (ov (make-overlay p (1+ p))))
1180 (overlay-put ov 'category (gnugo-f 'anim))
1181 (overlay-put ov 'priority most-positive-fixnum)
1184 (setplist (gnugo-f 'anim) (cons 'display cell))
1185 (while (and (cdr spec) ; let last linger lest levity lost
1186 (sit-for 0.08675309)) ; jenny jenny i got your number...
1187 (setcar cell (setq spec (cdr spec)))
1188 (set-buffer-modified-p t))
1190 (mapc 'delete-overlay ovs)
1193 (defun gnugo-display-group-data (command buffer-name)
1194 (message "Computing %s ..." command)
1195 (let ((data (cdr (gnugo-synchronous-send/return
1196 (format "%s %s" command (gnugo-position))))))
1197 (switch-to-buffer buffer-name)
1200 (message "Computing %s ... done." command))
1202 (defun gnugo-worm-stones ()
1203 "In the GNUGO Board buffer, animate \"worm\" at current position.
1204 Signal error if done out-of-turn or if game-over.
1205 See variable `gnugo-animation-string' for customization."
1208 (gnugo-animate-group "worm_stones"))
1210 (defun gnugo-worm-data ()
1211 "Display in another buffer data from \"worm\" at current position.
1212 Signal error if done out-of-turn or if game-over."
1215 (gnugo-display-group-data "worm_data" "*gnugo worm data*"))
1217 (defun gnugo-dragon-stones ()
1218 "In the GNUGO Board buffer, animate \"dragon\" at current position.
1219 Signal error if done out-of-turn or if game-over.
1220 See variable `gnugo-animation-string' for customization."
1223 (gnugo-animate-group "dragon_stones"))
1225 (defun gnugo-dragon-data ()
1226 "Display in another buffer data from \"dragon\" at current position.
1227 Signal error if done out-of-turn or if game-over."
1230 (gnugo-display-group-data "dragon_data" "*gnugo dragon data*"))
1232 (defun gnugo-toggle-dead-group ()
1233 "In a GNUGO Board buffer, during game-over, toggle a group as dead.
1234 The group is selected from current position (point). Signal error if
1235 not in game-over or if there is no group at that position.
1237 In the context of GNU Go, a group is called a \"dragon\" and may be
1238 composed of more than one \"worm\" (set of directly-connected stones).
1239 It is unclear to the gnugo.el author whether or not GNU Go supports
1240 - considering worms as groups in their own right; and
1241 - toggling group aliveness via GTP.
1242 Due to these uncertainties, this command is only half complete; the
1243 changes you may see in Emacs are not propagated to the gnugo subprocess.
1244 Thus, GTP commands like `final_score' may give unexpected results.
1246 If you are able to expose via GTP `change_dragon_status' in utils.c,
1247 you may consider modifying the `gnugo-toggle-dead-group' source code
1248 to enable full functionality."
1250 (let ((game-over (or (gnugo-get :game-over)
1251 (error "Sorry, game still in play")))
1252 (group (or (get-text-property (point) 'group)
1253 (error "No stone at that position")))
1254 (now (current-time)))
1255 (gnugo-put :scoring-seed (logior (ash (logand (car now) 255) 16)
1257 (let ((live (assq 'live game-over))
1258 (dead (assq 'dead game-over))
1260 (if (memq group live)
1261 (setq bef live now dead)
1262 (setq bef dead now live))
1263 (setcdr bef (delq group (cdr bef)))
1264 (setcdr now (cons group (cdr now)))
1265 ;; disabled permanently -- too wrong
1267 (flet ((populate (group)
1268 (let ((color (caar group)))
1269 (dolist (stone (cdr group))
1270 (gnugo-query "play %s %s" color stone)))))
1273 ;; drastic (and wrong -- clobbers capture info, etc)
1274 (gnugo-query "clear_board")
1275 (mapc 'populate (cdr live)))))
1276 ;; here is the desired interface (to be enabled Some Day)
1278 (gnugo-query "change_dragon_status %s %s"
1279 (cadr group) (if (eq now live)
1285 (defun gnugo-estimate-score ()
1286 "Display estimated score of a game of GNU Go.
1287 Output includes number of stones on the board and number of stones
1288 captured by each player, and the estimate of who has the advantage (and
1289 by how many stones)."
1291 (message "Est.score ...")
1292 (let ((black (length (gnugo-lsquery "list_stones black")))
1293 (white (length (gnugo-lsquery "list_stones white")))
1294 (black-captures (gnugo-query "captures black"))
1295 (white-captures (gnugo-query "captures white"))
1296 (est (gnugo-query "estimate_score")))
1297 ;; might as well update this
1298 (gnugo-put :black-captures black-captures)
1299 (gnugo-put :white-captures white-captures)
1300 (message "Est.score ... B %s %s | W %s %s | %s"
1301 black black-captures white white-captures est)))
1303 (defun gnugo-write-sgf-file (filename)
1304 "Save the game history to FILENAME (even if unfinished).
1305 If FILENAME already exists, Emacs confirms that you wish to overwrite it."
1306 (interactive "FWrite game as SGF file: ")
1307 (when (and (file-exists-p filename)
1308 (not (y-or-n-p "File exists. Continue? ")))
1309 (error "Not writing %s" filename))
1310 (gnugo/sgf-write-file (gnugo-get :sgf-collection) filename))
1312 (defun gnugo-read-sgf-file (filename)
1313 "Load the first game tree from FILENAME, a file in SGF format."
1314 (interactive "fSGF file to load: ")
1315 (when (file-directory-p filename)
1316 (error "Cannot load a directory (try a filename with extension .sgf)"))
1317 (let (ans play wait samep coll)
1318 ;; problem: requiring GTP `loadsgf' complicates network subproc support;
1319 ;; todo: skip it altogether when confident about `gnugo/sgf-read-file'
1320 (unless (= ?= (aref (setq ans (cdr (gnugo-synchronous-send/return
1321 (format "loadsgf %s"
1322 (expand-file-name filename)))))
1325 (setq play (substring ans 2)
1326 wait (gnugo-other play)
1327 samep (string= (gnugo-get :user-color) play))
1328 (gnugo-put :last-mover wait)
1330 (gnugo-put :gnugo-color wait)
1331 (gnugo-put :user-color play))
1332 (gnugo-put :sgf-collection (setq coll (gnugo/sgf-read-file filename)))
1333 (gnugo-put :sgf-gametree
1334 (nth (let ((n (length coll)))
1338 ;; (let* ((q (format "Which game? (1-%d)" n))
1339 ;; (choice (1- (read-number q 1))))
1340 ;; (if (and (< -1 choice) (< choice n))
1342 ;; (message "(Selecting the first game)")
1344 ;; but this is what we use (for now) to accomodate
1345 ;; (aka faithfully mimic) GTP `loadsgf' limitations:
1347 (message "(Selecting the first game)"))
1350 (let* ((tree (gnugo-get :sgf-gametree))
1353 mem node play game-over)
1354 (while (setq node (car loc))
1355 (when (setq play (or (assq :B node)
1357 ;; SGF[4] allows "" to mean PASS. For now,
1358 ;; we normalize here instead of at the lower layer.
1359 (when (string= "" (cdr play))
1363 (setq loc (cdr loc)))
1364 (gnugo-put :game-over
1366 (or (cdr (assq :RE (car tree)))
1369 (let ((order (if (string= "black" wait)
1372 (mapcar (lambda (pk)
1373 (cdr (assq (funcall pk order)
1374 (car (funcall pk mem)))))
1378 (vector (or (car mem) (gnugo-get :sgf-gametree))
1381 (when (and game-over
1382 ;; (maybe) todo: user var to inhibit (can be slow)
1384 (gnugo-close-game nil game-over)))
1386 (message "GNU Go %splays as %s, you as %s (%s)"
1387 (if samep "" "now ")
1390 "NOTE: this is a switch!"))))
1392 (defun gnugo-magic-undo (spec &optional noalt)
1393 "Undo moves on the GNUGO Board, based on SPEC, a string or number.
1394 If SPEC is a string in the form of a board position (e.g., \"T19\"),
1395 check that the position is occupied by a stone of the user's color,
1396 and if so, remove moves from the history until that position is clear.
1397 If SPEC is a positive number, remove exactly that many moves from the
1398 history, signaling an error if the history is exhausted before finishing.
1399 If SPEC is not recognized, signal \"bad spec\" error.
1401 Refresh the board for each move undone. If (in the case where SPEC is
1402 a number) after finishing, the color to play is not the user's color,
1403 schedule a move by GNU Go.
1405 After undoing the move(s), schedule a move by GNU Go if it is GNU Go's
1406 turn to play. Optional second arg NOALT non-nil inhibits this."
1409 (monkey (gnugo-get :monkey))
1410 (mem (aref monkey 1))
1411 (count (aref monkey 2))
1413 (cond ((and (numberp spec) (< 0 spec))
1414 (setq n spec done (lambda () (= 0 n))))
1415 ((string-match "^[a-z]" spec)
1416 (let ((pos (upcase spec)))
1417 (setq done `(lambda ()
1418 (gnugo-goto-pos ,pos)
1419 (memq (char-after) '(?. ?+))))
1420 (when (funcall done)
1421 (error "%s already clear" pos))
1422 (let ((u (gnugo-get :user-color)))
1423 (when (= (save-excursion
1424 (gnugo-goto-pos pos)
1426 (if (string= "black" u)
1429 (error "%s not occupied by %s" pos u)))))
1430 (t (error "Bad spec: %S" spec)))
1431 (when (gnugo-get :game-over)
1432 (gnugo-put :game-over nil))
1433 (while (not (funcall done))
1434 (setq ans (cdr (gnugo-synchronous-send/return "undo")))
1435 (unless (= ?= (aref ans 0))
1437 (aset monkey 2 (decf count))
1438 (aset monkey 1 (setq mem (cdr mem)))
1439 (aset monkey 0 (or (car mem) (gnugo-get :sgf-gametree)))
1440 (gnugo-put :last-mover (gnugo-other (gnugo-get :last-mover)))
1441 (gnugo-merge-showboard-results) ; all
1442 (gnugo-refresh) ; this
1444 (sit-for 0))) ; eye candy
1445 (let* ((ulastp (string= (gnugo-get :last-mover) (gnugo-get :user-color)))
1447 (ubpos (gnugo-move-history (if ulastp 'car 'cadr))))
1448 (gnugo-put :last-user-bpos (if (and ubpos (not (string= "PASS" ubpos)))
1450 (gnugo-get :center-position)))
1452 ;; preserve restricted-functionality semantics (todo: remove restriction)
1453 (setcdr (aref (gnugo-get :monkey) 0) nil)
1454 (when (and ulastp (not noalt))
1455 (gnugo-get-move (gnugo-get :gnugo-color)))))
1457 (defun gnugo-undo-one-move ()
1458 "Undo exactly one move (perhaps GNU Go's, perhaps yours).
1459 Do not schedule a move by GNU Go even if it is GNU Go's turn to play.
1460 See also `gnugo-undo-two-moves'."
1463 (gnugo-magic-undo 1 t))
1465 (defun gnugo-undo-two-moves ()
1466 "Undo a pair of moves (GNU Go's and yours).
1467 However, if you are the last mover, undo only one move.
1468 Regardless, after undoing, it is your turn to play again."
1471 (gnugo-magic-undo (if (string= (gnugo-get :user-color)
1472 (gnugo-get :last-mover))
1476 (defun gnugo-display-final-score ()
1477 "Display final score and other info in another buffer (when game over).
1478 If the game is still ongoing, Emacs asks if you wish to stop play (by
1479 making sure two \"pass\" moves are played consecutively, if necessary).
1480 Also, add the `:RE' SGF property to the root node of the game tree."
1482 (unless (or (gnugo-get :game-over)
1483 (and (not (gnugo-get :waitingp))
1484 (y-or-n-p "Game still in play. Stop play now? ")))
1485 (error "Sorry, game still in play"))
1486 (unless (gnugo-get :game-over)
1487 (flet ((pass (userp)
1488 (message "Playing PASS for %s ..."
1489 (gnugo-get (if userp :user-color :gnugo-color)))
1491 (gnugo-push-move userp "PASS")))
1496 (let ((b= " Black = ")
1498 (res (let* ((node (car (aref (gnugo-get :monkey) 0)))
1499 (event (and node (cdr (assq :EV node)))))
1500 (and event (string= "resignation" event)
1501 (if (assq :B node) "black" "white"))))
1505 (format "%s wins.\n"
1506 (substring (if (= ?b (aref res 0)) w= b=)
1508 "The game is over.\n"
1509 (format "Resignation by %s.\n" res))
1510 result (concat (upcase (substring (gnugo-other res) 0 1))
1512 (message "Computing final score ...")
1513 (let* ((live (cdr (assq 'live (gnugo-get :game-over))))
1514 (dead (cdr (assq 'dead (gnugo-get :game-over))))
1515 (seed (gnugo-get :scoring-seed))
1516 (terr-q (format "final_status_list %%s_territory %d" seed))
1519 (b-terr (length (gnugo-lsquery terr-q "black")))
1520 (w-terr (length (gnugo-lsquery terr-q "white")))
1521 (b-capt (string-to-number (gnugo-get :black-captures)))
1522 (w-capt (string-to-number (gnugo-get :white-captures)))
1523 (komi (gnugo-treeroot :KM)))
1524 (setq blurb (list "The game is over. Final score:\n")
1525 result (gnugo-query "final_score %d" seed))
1526 (cond ((string= "Chinese" (gnugo-treeroot :RU))
1527 (dolist (group live)
1528 (let ((count (length (cdr group))))
1529 (if (string= "black" (caar group))
1530 (setq b-terr (+ b-terr count))
1531 (setq w-terr (+ w-terr count)))))
1532 (dolist (group dead)
1533 (let* ((color (caar group))
1534 (count (length (cdr group))))
1535 (if (string= "black" color)
1536 (setq w-terr (+ count w-terr))
1537 (setq b-terr (+ count b-terr)))))
1538 (push (format "%s%d %s = %3.1f\n" b= b-terr terr b-terr) blurb)
1539 (push (format "%s%d %s + %3.1f %s = %3.1f\n" w=
1540 w-terr terr komi 'komi (+ w-terr komi))
1543 (dolist (group dead)
1544 (let* ((color (caar group))
1545 (adjust (* 2 (length (cdr group)))))
1546 (if (string= "black" color)
1547 (setq w-terr (+ adjust w-terr))
1548 (setq b-terr (+ adjust b-terr)))))
1549 (push (format "%s%d %s + %s %s = %3.1f\n" b=
1554 (push (format "%s%d %s + %s %s + %3.1f %s = %3.1f\n" w=
1558 (+ w-terr w-capt komi))
1560 (push (if (string= "0" result)
1561 "The game is a draw.\n"
1562 (format "%s wins by %s.\n"
1563 (substring (if (= ?B (aref result 0)) b= w=) 3 8)
1564 (substring result 2)))
1566 (message "Computing final score ... done")))
1568 (when (gnugo-get :game-end-time)
1570 (dolist (spec '(("Game start" . :game-start-time)
1571 (" end" . :game-end-time)))
1572 (push (format-time-string
1573 (concat (car spec) ": %Y-%m-%d %H:%M:%S %z\n")
1574 (gnugo-get (cdr spec)))
1576 (setq blurb (apply 'concat (nreverse blurb)))
1577 (let* ((root (car (gnugo-get :sgf-gametree)))
1578 (cur (assq :RE root)))
1581 (setcdr (last root) (list (cons :RE result)))))
1582 (switch-to-buffer (format "%s*GNUGO Final Score*" (gnugo-get :diamond)))
1586 ;;;---------------------------------------------------------------------------
1587 ;;; Command properties and gnugo-command
1589 ;; GTP commands entered by the user are never issued directly to GNU Go;
1590 ;; instead, their behavior and output are controlled by the property
1591 ;; `:gnugo-gtp-command-spec' hung off of each (interned/symbolic) command.
1592 ;; The value of this property is a sub-plist, w/ sub-properties as follows:
1594 ;; :full -- completely interpret the command string; the value is a
1595 ;; func that takes the list of words derived from splitting the
1596 ;; command string (minus the command) and handles everything.
1598 ;; :output -- either a keyword specifying the preferred output method:
1599 ;; :message -- show output in minibuffer
1600 ;; :discard -- sometimes you just don't care;
1601 ;; or a function that takes one arg, the output string, and
1602 ;; handles it completely. default is to switch to buffer
1603 ;; "*gnugo command output*" if the output has a newline,
1604 ;; otherwise use `message'.
1606 ;; :post-hook -- normal hook run after output processing (at the very end).
1608 (defun gnugo-command (command)
1609 "Send the Go Text Protocol COMMAND (a string) to GNU Go.
1610 Output and Emacs behavior depend on which command is given (some
1611 commands are handled completely by Emacs w/o using the subprocess;
1612 some commands have their output displayed in specially prepared
1613 buffers or in the echo area; some commands are instrumented to do
1614 gnugo.el-specific housekeeping).
1616 For example, for the command \"help\", Emacs visits the
1617 GTP command reference info page.
1619 NOTE: At this time, GTP command handling specification is still
1620 incomplete. Thus, some commands WILL confuse gnugo.el."
1621 (interactive "sCommand: ")
1622 (if (string= "" command)
1623 (message "(no command given)")
1624 (let* ((split (split-string command))
1625 (cmd (intern (car split)))
1626 (spec (get cmd :gnugo-gtp-command-spec))
1627 (full (plist-get spec :full))
1630 (funcall full (cdr split))
1631 (message "Doing %s ..." command)
1632 (let* ((ans (cdr (gnugo-synchronous-send/return command)))
1633 (where (plist-get spec :output)))
1634 (if (string-match "unknown.command" ans)
1636 (cond ((functionp where) (funcall where ans))
1637 ((eq :discard where) (message ""))
1638 ((or (eq :message where)
1639 (not (string-match "\n" ans)))
1641 (t (switch-to-buffer "*gnugo command output*")
1644 (message "Doing %s ... done." command)))
1646 ;; do not elide this binding; `run-hooks' needs it
1647 (plist-get spec :post-hook)))
1648 (run-hooks 'hook))))))))
1650 ;;;---------------------------------------------------------------------------
1651 ;;; Major mode for interacting with a GNUGO subprocess
1653 (put 'gnugo-board-mode 'mode-class 'special)
1654 (defun gnugo-board-mode ()
1655 "Major mode for playing GNU Go.
1656 Entering this mode runs the normal hook `gnugo-board-mode-hook'.
1657 In this mode, keys do not self insert. Default keybindings:
1661 RET or SPC Run `gnugo-move'.
1663 q or Q Quit (the latter without confirmation).
1667 u Run `gnugo-undo-two-moves'.
1669 U Pass to `gnugo-magic-undo' either the board position
1670 at point (if no prefix arg), or the prefix arg converted
1671 to a number. E.g., to undo 16 moves: `C-u C-u U' (see
1672 `universal-argument'); to undo 42 moves: `M-4 M-2 U'.
1674 C-l Run `gnugo-refresh'.
1676 _ or M-_ Bury the Board buffer (when the boss is near).
1680 i Toggle display using XPM images (if supported).
1682 w Run `gnugo-worm-stones'.
1683 d Run `gnugo-dragon-stones'.
1685 W Run `gnugo-worm-data'.
1686 D Run `gnugo-dragon-data'.
1688 t Run `gnugo-toggle-dead-group'.
1690 ! Run `gnugo-estimate-score'.
1692 : or ; Run `gnugo-command' (for GTP commands to GNU Go).
1694 = Display board position under point (if valid).
1696 h Run `gnugo-move-history'.
1698 F Run `gnugo-display-final-score'.
1700 s Run `gnugo-write-sgf-file'.
1704 l Run `gnugo-read-sgf-file'."
1705 (switch-to-buffer (generate-new-buffer "(Uninitialized GNUGO Board)"))
1706 (buffer-disable-undo) ; todo: undo undo undoing
1707 (kill-all-local-variables)
1708 (setq truncate-lines t)
1709 (use-local-map gnugo-board-mode-map)
1710 (set (make-local-variable 'font-lock-defaults)
1711 '(gnugo-font-lock-keywords t))
1712 (setq major-mode 'gnugo-board-mode)
1713 (setq mode-name "GNUGO Board")
1714 (add-hook 'kill-buffer-hook 'gnugo-cleanup nil t)
1715 (set (make-local-variable 'gnugo-state)
1716 (make-hash-table :size (1- 42) :test 'eq))
1717 (add-to-invisibility-spec :nogrid)
1718 (mapc (lambda (prop)
1719 (gnugo-put prop nil)) ; todo: separate display/game aspects;
1720 '(:game-over ; move latter to func `gnugo'
1727 :display-using-images
1731 (let ((name (if (string-match "[ ]" gnugo-program)
1732 (let ((p (substring gnugo-program 0 (match-beginning 0)))
1733 (o (substring gnugo-program (match-end 0)))
1734 (h (or (car gnugo-option-history) "")))
1735 (when (string-match "--mode" o)
1736 (error "Found \"--mode\" in `gnugo-program'"))
1737 (when (and o (< 0 (length o))
1739 (or (< (length h) (length o))
1740 (not (string= (substring h 0 (length o))
1742 (push (concat o " " h) gnugo-option-history))
1745 (args (read-string "GNU Go options: "
1746 (car gnugo-option-history)
1747 'gnugo-option-history))
1749 board-size user-color handicap komi minus-l infile)
1751 (apply (lambda (var default opt &optional rx)
1753 (or (when (string-match opt args)
1754 (let ((start (match-end 0)) s)
1755 (string-match (or rx "[0-9.]+") args start)
1756 (setq s (match-string 0 args))
1757 (if rx s (string-to-number s))))
1760 '((board-size 19 "--boardsize")
1761 (user-color "black" "--color" "\\(black\\|white\\)")
1762 (handicap 0 "--handicap")
1764 (minus-l nil "\\([^-]\\|^\\)-l[ ]*" "[^ ]+")
1765 (infile nil "--infile" "[ ]*[^ ]+")))
1766 (gnugo-put :user-color user-color)
1767 (when (string-match "--chinese-rules" args)
1768 (setq rules "Chinese"))
1769 (let ((proc-args (split-string args)))
1770 (gnugo-put :proc-args proc-args)
1771 (gnugo-put :proc (apply 'start-process "gnugo" nil name
1772 "--mode" "gtp" "--quiet"
1774 (when (or minus-l infile)
1776 (apply (lambda (prop q)
1777 (set prop (string-to-number (gnugo-query q))))
1779 '((board-size "query_boardsize")
1781 (handicap "get_handicap"))))
1782 (gnugo-put :diamond (substring (process-name (gnugo-get :proc)) 5))
1783 (gnugo-put :gnugo-color (gnugo-other (gnugo-get :user-color)))
1784 (gnugo-put :highlight-last-move-spec
1785 (gnugo-put :default-highlight-last-move-spec '("(" -1 nil)))
1786 (gnugo-put :lparen-ov (make-overlay 1 1))
1787 (gnugo-put :rparen-ov (let ((ov (make-overlay 1 1)))
1788 (overlay-put ov 'display ")")
1790 (gnugo-put :sgf-gametree (list (list '(:FF . 4) '(:GM . 1))))
1791 (let ((tree (gnugo-get :sgf-gametree)))
1792 (gnugo-put :sgf-collection (list tree))
1793 (gnugo-put :monkey (vector tree nil 0)))
1794 (let ((g-blackp (string= "black" (gnugo-get :gnugo-color))))
1795 (mapc (lambda (x) (apply 'gnugo-note x))
1797 (:DT ,(format-time-string "%Y-%m-%d"))
1799 (:AP ("gnugo.el" . ,gnugo-version))
1801 (,(if g-blackp :PW :PB) ,(user-full-name))
1802 (,(if g-blackp :PB :PW) ,(concat "GNU Go "
1803 (gnugo-query "version")))
1804 ,@(when (not (= 0 handicap))
1806 (:AB ,(gnugo-lsquery "fixed_handicap %d" handicap)
1808 (set-process-sentinel (gnugo-get :proc) 'gnugo-sentinel)
1809 (set-process-buffer (gnugo-get :proc) (current-buffer))
1810 (gnugo-put :waiting-start (current-time))
1813 (run-hooks 'gnugo-board-mode-hook)
1816 ;;;---------------------------------------------------------------------------
1820 (defun gnugo (&optional new-game)
1821 "Run gnugo in a buffer, or resume a game in progress.
1822 Prefix arg means skip the game-in-progress check and start a new
1825 You are queried for additional command-line options (Emacs supplies
1826 \"--mode gtp --quiet\" automatically). Here is a list of options
1827 that gnugo.el understands and handles specially:
1829 --boardsize num Set the board size to use (5--19)
1830 --color <color> Choose your color ('black' or 'white')
1831 --handicap <num> Set the number of handicap stones (0--9)
1833 If there is already a game in progress you may resume it instead of
1834 starting a new one. See `gnugo-board-mode' documentation for more info."
1836 (let* ((all (let (acc)
1837 (dolist (buf (buffer-list))
1838 (when (gnugo-board-buffer-p buf)
1839 (push (cons (buffer-name buf) buf) acc)))
1842 (if (and (not new-game)
1844 (y-or-n-p (format "GNU Go game%s in progress, resume play? "
1845 (if (= 1 n) "" "s"))))
1850 (let ((sel (completing-read "Which one? " all nil t)))
1851 (if (string= "" sel)
1853 (assoc sel all))))))
1854 ;; set up a new board
1856 (let ((half (truncate (1+ (gnugo-treeroot :SZ)) 2)))
1857 (gnugo-goto-pos (format "A%d" half))
1858 (forward-char (* 2 (1- half)))
1859 (gnugo-put :last-user-bpos
1860 (gnugo-put :center-position
1861 (get-text-property (point) 'gnugo-position))))
1863 (gnugo-put :game-start-time (current-time))
1864 (let ((g (gnugo-get :gnugo-color))
1865 (n (or (gnugo-treeroot :HA) 0))
1866 (u (gnugo-get :user-color)))
1867 (gnugo-put :last-mover g)
1868 (when (or (and (string= "black" u) (< 1 n))
1869 (and (string= "black" g) (< n 2)))
1870 (gnugo-put :last-mover u)
1872 (gnugo-get-move g))))))
1874 ;;;---------------------------------------------------------------------------
1875 ;;; Load-time actions
1877 (unless gnugo-board-mode-map
1878 (setq gnugo-board-mode-map (make-sparse-keymap))
1879 (suppress-keymap gnugo-board-mode-map)
1880 (mapc (lambda (pair)
1881 (define-key gnugo-board-mode-map (car pair) (cdr pair)))
1882 '(("?" . describe-mode)
1883 ("\C-m" . gnugo-move)
1886 ("R" . gnugo-resign)
1887 ("q" . (lambda () (interactive)
1888 (if (or (gnugo-get :game-over)
1889 (y-or-n-p "Quit? "))
1891 (message "(not quitting)"))))
1892 ("Q" . (lambda () (interactive)
1894 ("U" . (lambda (x) (interactive "P")
1896 (cond ((numberp x) x)
1898 (t (gnugo-position))))))
1899 ("u" . gnugo-undo-two-moves)
1900 ("\C-l" . gnugo-refresh)
1901 ("\M-_" . bury-buffer)
1903 ("h" . gnugo-move-history)
1904 ("i" . (lambda () (interactive)
1905 (gnugo-toggle-image-display)
1906 (save-excursion (gnugo-refresh))))
1907 ("w" . gnugo-worm-stones)
1908 ("W" . gnugo-worm-data)
1909 ("d" . gnugo-dragon-stones)
1910 ("D" . gnugo-dragon-data)
1911 ("t" . gnugo-toggle-dead-group)
1912 ("g" . gnugo-toggle-grid)
1913 ("!" . gnugo-estimate-score)
1914 (":" . gnugo-command)
1915 (";" . gnugo-command)
1916 ("=" . (lambda () (interactive)
1917 (message (gnugo-position))))
1918 ("s" . gnugo-write-sgf-file)
1919 ("\C-x\C-s" . gnugo-write-sgf-file)
1920 ("\C-x\C-w" . gnugo-write-sgf-file)
1921 ("l" . gnugo-read-sgf-file)
1922 ("F" . gnugo-display-final-score)
1924 ([(down-mouse-1)] . gnugo-mouse-move)
1925 ([(down-mouse-2)] . gnugo-mouse-move) ; mitigate accidents
1926 ([(down-mouse-3)] . gnugo-mouse-pass)
1927 ;; delving into the curiosities
1928 ("\C-c\C-p" . gnugo-describe-internal-properties))))
1930 (unless (get 'help :gnugo-gtp-command-spec)
1931 (flet ((sget (x) (get x :gnugo-gtp-command-spec))
1932 (jam (cmd prop val) (put cmd :gnugo-gtp-command-spec
1933 (plist-put (sget cmd) prop val)))
1934 (add (cmd prop val) (jam cmd prop (let ((cur (plist-get
1937 (append (delete val cur)
1939 (defgtp (x &rest props) (dolist (cmd (if (symbolp x) (list x) x))
1942 (funcall (if (eq :post-hook (car ls))
1945 cmd (car ls) (cadr ls))
1946 (setq ls (cddr ls)))))))
1950 (info "(gnugo)GTP command reference")
1951 (when sel (setq sel (intern (car sel))))
1952 (let (buffer-read-only pad cur spec output found)
1953 (flet ((note (s) (insert pad "[NOTE: gnugo.el " s ".]\n")))
1954 (goto-char (point-min))
1956 (while (re-search-forward "^ *[*] \\([a-zA-Z_]+\\)\\(:.*\\)*\n"
1959 (setq pad (make-string (- (match-beginning 1)
1960 (match-beginning 0))
1964 (get (setq cur (intern (match-string 1)))
1965 :gnugo-gtp-command-spec))
1967 (note "handles this command completely"))
1968 (when (setq output (plist-get spec :output))
1969 (cond ((functionp output)
1970 (note "handles the output specially"))
1971 ((eq :discard output)
1972 (note "discards the output"))
1973 ((eq :message output)
1974 (note "displays the output in the echo area"))))
1976 (setq found (match-beginning 0))))))
1977 (cond (found (goto-char found))
1979 (t (message "(no such command: %s)" sel))))))
1981 (defgtp 'final_score :full
1982 (lambda (sel) (gnugo-display-final-score)))
1988 :post-hook (lambda ()
1989 (gnugo-put :game-over nil)
1990 (gnugo-put :last-mover nil)
1993 (defgtp 'loadsgf :full
1994 (lambda (sel) (gnugo-read-sgf-file (car sel))))
1996 (defgtp '(undo gg-undo) :full
1997 (lambda (sel) (gnugo-magic-undo
2000 ((< 0 (setq n (string-to-number (car sel)))) n)
2001 (t (car sel)))))))))
2006 ;;;---------------------------------------------------------------------------
2007 ;;; The remainder of this file defines a simplified SGF-handling library.
2008 ;;; When/if it should start to attain generality, it should be split off into
2009 ;;; a separate file (probably named sgf.el) w/ funcs and vars renamed sans the
2010 ;;; "gnugo/" prefix.
2012 (defconst gnugo/sgf-*r4-properties*
2013 '((AB "Add Black" setup list stone)
2014 (AE "Add Empty" game list point)
2015 (AN "Annotation" game simpletext)
2016 (AP "Application" root (simpletext . simpletext))
2017 (AR "Arrow" - list (point . point))
2018 (AS "Who adds stones" - simpletext) ; (LOA)
2019 (AW "Add White" setup list stone)
2020 (B "Black" move move)
2021 (BL "Black time left" move real)
2022 (BM "Bad move" move double)
2023 (BR "Black rank" game simpletext)
2024 (BT "Black team" game simpletext)
2025 (C "Comment" - text)
2026 (CA "Charset" root simpletext)
2027 (CP "Copyright" game simpletext)
2028 (CR "Circle" - list point)
2029 (DD "Dim points" - elist point) ; (inherit)
2030 (DM "Even position" - double)
2031 (DO "Doubtful" move none)
2032 (DT "Date" game simpletext)
2033 (EV "Event" game simpletext)
2034 (FF "Fileformat" root [number (1 . 4)])
2035 (FG "Figure" - (or none (number . simpletext)))
2036 (GB "Good for Black" - double)
2037 (GC "Game comment" game text)
2038 (GM "Game" root [number (1 . 20)])
2039 (GN "Game name" game simpletext)
2040 (GW "Good for White" - double)
2041 (HA "Handicap" game number) ; (Go)
2042 (HO "Hotspot" - double)
2043 (IP "Initial pos." game simpletext) ; (LOA)
2044 (IT "Interesting" move none)
2045 (IY "Invert Y-axis" game simpletext) ; (LOA)
2046 (KM "Komi" game real) ; (Go)
2048 (LB "Label" - list (point . simpletext))
2049 (LN "Line" - list (point . point))
2050 (MA "Mark" - list point)
2051 (MN "set move number" move number)
2052 (N "Nodename" - simpletext)
2053 (OB "OtStones Black" move number)
2054 (ON "Opening" game text)
2055 (OT "Overtime" game simpletext)
2056 (OW "OtStones White" move number)
2057 (PB "Player Black" game simpletext)
2058 (PC "Place" game simpletext)
2059 (PL "Player to play" setup color)
2060 (PM "Print move mode" - number) ; (inherit)
2061 (PW "Player White" game simpletext)
2062 (RE "Result" game simpletext)
2063 (RO "Round" game simpletext)
2064 (RU "Rules" game simpletext)
2065 (SE "Markup" - point) ; (LOA)
2066 (SL "Selected" - list point)
2067 (SO "Source" game simpletext)
2068 (SQ "Square" - list point)
2069 (ST "Style" root [number (0 . 3)])
2070 (SU "Setup type" game simpletext) ; (LOA)
2071 (SZ "Size" root (or number (number . number)))
2072 (TB "Territory Black" - elist point) ; (Go)
2073 (TE "Tesuji" move double)
2074 (TM "Timelimit" game real)
2075 (TR "Triangle" - list point)
2076 (TW "Territory White" - elist point) ; (Go)
2077 (UC "Unclear pos" - double)
2078 (US "User" game simpletext)
2080 (VW "View" - elist point) ; (inherit)
2081 (W "White" move move)
2082 (WL "White time left" move real)
2083 (WR "White rank" game simpletext)
2084 (WT "White team" game simpletext)
2085 (LT "Lose on time" setup simpletext))
2086 ;; r4-specific notes
2087 ;; - changed: DT FG LB RE RU SZ
2088 ;; - added: AP AR AS DD IP IY LN OT PM SE SQ ST SU VW
2089 "List of SGF[4] properties, each of the form (PROP NAME CONTEXT SPEC...).")
2091 (defun gnugo/sgf-read-file (filename)
2092 "Return the collection (list) of gametrees in SGF[4] file FILENAME."
2093 (let ((keywords (or (get 'gnugo/sgf-*r4-properties* :keywords)
2094 (put 'gnugo/sgf-*r4-properties* :keywords
2095 (mapcar (lambda (full)
2097 (intern (format ":%s" (car full)))))
2098 gnugo/sgf-*r4-properties*))))
2099 (specs (or (get 'gnugo/sgf-*r4-properties* :specs)
2100 (put 'gnugo/sgf-*r4-properties* :specs
2101 (mapcar (lambda (full)
2102 (cons (car full) (cdddr full)))
2103 gnugo/sgf-*r4-properties*)))))
2104 (flet ((sw () (skip-chars-forward " \t\n"))
2105 (x (end) (let ((beg (point))
2107 (:end (lambda (char) (= ?\] char)))
2108 (:mid (lambda (char) (= ?\: char)))
2109 (t (lambda (char) (or (= ?\: char)
2112 (while (not (funcall endp (setq c (char-after))))
2118 ((looking-at "\\s-+")
2119 (delete-region (point) (match-end 0))
2121 (t (forward-char 1))))
2122 (buffer-substring-no-properties beg (point))))
2123 (one (type end) (unless (eq 'none type)
2127 ((stone point move simpletext color) s)
2128 ((number real double) (string-to-number s))
2130 (t (error "Unhandled type: %S" type))))))
2131 (val (spec) (cond ((symbolp spec)
2134 ;; todo: check range here.
2135 (one (aref spec 0) :end))
2136 ((eq 'or (car spec))
2137 (let ((v (one (cadr spec) t)))
2138 (if (= ?\] (char-after))
2141 ;; todo: this assumes `spec' has the form
2142 ;; (or foo (foo . bar))
2143 ;; i.e., foo is not rescanned. e.g., `SZ'.
2144 ;; probably this assumption is consistent
2145 ;; w/ the SGF authors' desire to make the
2146 ;; parsing easy, but you never know...
2147 (cons v (one (cdaddr spec) :end)))))
2148 (t (cons (one (car spec) :mid)
2149 (one (cdr spec) :end)))))
2150 (short (who) (when (eobp)
2151 (error "Unexpected EOF while reading %s" who)))
2152 (atvalp () (= ?\[ (char-after)))
2153 (PROP () (let (name spec ltype)
2154 (sw) (short 'property)
2155 (when (looking-at "[A-Z]")
2156 (setq name (read (current-buffer))
2157 spec (cdr (assq name specs)))
2160 (cdr (assq name keywords))
2161 (prog1 (if (= 1 (length spec))
2163 (unless (memq (setq ltype (car spec))
2165 (error "Bad spec: %S" spec))
2166 (if (and (eq 'elist ltype) (sw)
2169 (let ((type (cadr spec))
2171 (while (and (sw) (atvalp)
2172 (setq mo (val type)))
2177 (forward-char 1))))))
2178 (NODE () (let (prop props)
2180 (when (= ?\; (char-after))
2182 (while (setq prop (PROP))
2185 (TREE () (let (nodes)
2186 (while (and (sw) (not (eobp)))
2188 (?\; (push (NODE) nodes))
2189 (?\( (forward-char 1)
2190 (push (TREE) nodes))
2191 (?\) (forward-char 1))))
2194 (insert-file-contents filename)
2196 (while (and (sw) (not (eobp)) (= 40 (char-after))) ; left paren
2198 (push (TREE) trees))
2199 (nreverse trees))))))
2201 (defun gnugo/sgf-write-file (collection filename)
2202 ;; take responsibility for our actions
2203 (dolist (tree collection)
2204 (let* ((root (car tree))
2205 (who (assq :AP root))
2206 (fruit (cons "gnugo.el" gnugo-version)))
2209 (setcdr (last root) (list (cons :AP fruit))))))
2211 (let ((aft-newline-appreciated '(:AP :GN :PB :PW :HA :KM :RU :RE))
2212 (specs (mapcar (lambda (full)
2213 (cons (intern (format ":%s" (car full)))
2215 gnugo/sgf-*r4-properties*))
2217 ;; todo: escape special chars for `text' and `simpletext'.
2218 (flet ((>>one (v) (insert (format "[%s]" v)))
2219 (>>two (v) (insert (format "[%s:%s]" (car v) (cdr v))))
2220 (>>nl () (cond ((memq name aft-newline-appreciated)
2222 ((< 60 (current-column))
2227 (dolist (tree collection)
2235 (insert (substring (symbol-name name) 1))
2238 (memq (car (setq spec (cdr (assq name specs))))
2241 (let ((>> (if (consp (cadr spec))
2244 (dolist (little-v v)
2245 (setq p (point)) (funcall >> little-v) (>>nl))))
2249 (>>one v) (>>nl)))))
2251 (write-file filename)))))
2253 ;;; gnugo.el ends here