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|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; An engine for interacting with Internet Chess Servers
;;
;; $Revision$
(require 'chess-network)
(require 'ics)
(defgroup chess-ics nil
"Engine for interacting with Internet Chess Servers."
:group 'chess-engine)
(defvar chess-ics-ensure-ics12 nil)
(make-variable-buffer-local 'chess-ics-ensure-ics12)
;; ICS12 format (with artificial line breaks):
;;
;; <12> rnbqkbnr pppppppp -------- -------- \
;; -------- -------- PPPPPPPP RNBQKBNR W \
;; -1 1 1 1 1 0 65 jwiegley GuestZYNJ \
;; 1 5 0 39 39 300 300 1 P/e2-e4 (0:00) e4 0 0 0
(defun chess-ics12-parse (string)
"Parse an ICS12 format string, and return a list of its info.
The list is comprised of: the ply the string represents, who is white,
who is black."
(let ((parts (split-string string " "))
(position (chess-pos-create t))
white black ply)
(assert (= (length parts) 31))
;; first, handle the layout of the position
(dotimes (i 8)
(dotimes (j 8)
(let ((piece (aref (car parts) j)))
(unless (= piece ?-)
(chess-pos-set-piece position (chess-rf-to-index i j)
piece))))
(setq parts (cdr parts)))
;; next, the "side to move
(chess-pos-set-side-to-move position (string= (car parts) "W"))
(setq parts (cdr parts))
;; unknown
(setq parts (cdr parts))
;; castling rights?
(if (string= (car parts) "1")
(chess-pos-set-can-castle position ?K t))
(setq parts (cdr parts))
(if (string= (car parts) "1")
(chess-pos-set-can-castle position ?Q t))
(setq parts (cdr parts))
(if (string= (car parts) "1")
(chess-pos-set-can-castle position ?k t))
(setq parts (cdr parts))
(if (string= (car parts) "1")
(chess-pos-set-can-castle position ?q t))
(setq parts (cdr parts))
;; unknown
(setq parts (cdr parts))
(setq parts (cdr parts))
;; white player, black player
(setq white (car parts))
(setq parts (cdr parts))
(setq black (car parts))
(setq parts (cdr parts))
;; unknown
(setq parts (cdr parts))
(setq parts (cdr parts))
(setq parts (cdr parts))
;; material values for each side
(setq parts (cdr parts))
(setq parts (cdr parts))
;; starting time each side
(setq parts (cdr parts))
(setq parts (cdr parts))
;; unknown
(setq parts (cdr parts))
;; move in elaborated notation
(setq ply (if (string= (car parts) "none")
(chess-ply-create position)
(chess-algebraic-to-ply position (substring (car parts) 2))))
(setq parts (cdr parts))
;; time elapsed
(setq parts (cdr parts))
;; move in algebraic notation
(setq parts (cdr parts))
;; unknown
(setq parts (cdr parts))
(setq parts (cdr parts))
(setq parts (cdr parts))
(list ply white black)))
(defun chess-ics-handle-move ()
(let ((begin (match-beginning 1))
(end (match-end 1))
(info (chess-ics12-parse (match-string 2)))
(game (chess-engine-game nil)))
(assert game)
(if (> (chess-game-index game) 0)
(if (eq (chess-pos-side-to-move (chess-ply-pos (car info)))
(chess-pos-side-to-move (chess-engine-position nil)))
(chess-engine-do-move (car info)))
(chess-engine-set-start-position nil (chess-ply-pos (car info))
(string= (cadr info) ics-handle)))
(delete-region begin end)
t))
(defvar chess-ics-regexp-alist
(list (cons "\\(<12> \\(.+\\)\\)" 'chess-ics-handle-move)
(cons "Challenge: \\(\\S-+\\) \\S-+ \\S-+ \\S-+ .+"
(function
(lambda ()
(funcall chess-engine-response-handler 'connect
(match-string 1)))))))
(defun chess-ics-handler (event &rest args)
(cond
((eq event 'initialize)
(let* ((old-buffer (current-buffer))
(address-or-alias (read-from-minibuffer
"ICS Server address or alias: "))
(server-info-list (cdr (assoc address-or-alias
ics-servers-alist)))
(ics-address (or (car (cdr server-info-list))
address-or-alias))
(ics-connect-method (or (car (nthcdr 3 server-info-list))
ics-default-connect-method))
(server-name (or (car server-info-list)
address-or-alias))
(ics-port (or (car (nthcdr 2 server-info-list))
(read-from-minibuffer "ICS port: "
ics-default-port)))
(handle (read-from-minibuffer "ICS Handle: "
ics-default-handle))
(proc (concat server-name ":" handle))
(buffer (concat "*" proc "*")))
(setq ics-handle handle)
(if (comint-check-proc buffer)
(set-buffer buffer)
(run-hooks 'ics-pre-connect-hook)
(set-buffer (make-comint proc (cons ics-address ics-port)))
(run-hooks 'ics-post-connect-hook)
(ics-mode))
(set (make-variable-buffer-local 'ics-last-command-time)
(ics-current-time))
(set (make-variable-buffer-local 'ics-idle-p) nil)
(set (make-variable-buffer-local 'ics-interface-variable-set) nil)
(set (make-variable-buffer-local 'ics-wakeup-last-alarm-time)
(ics-current-time))
(set (make-variable-buffer-local 'ics-last-highlight-end) nil)
(set (make-variable-buffer-local 'ics-last-add-buttons-end) nil)
(add-hook 'comint-output-filter-functions 'chess-ics-filter t t)
(set (make-local-variable 'comint-preoutput-filter-functions)
'(chess-ics-strip-cr))
(display-buffer buffer)
(kill-buffer old-buffer)
nil))
((eq event 'shutdown)
(chess-engine-send nil "quit\n"))
((eq event 'move)
(unless chess-ics-ensure-ics12
(comint-send-string (get-buffer-process (current-buffer))
"set style 12\n")
(setq chess-ics-ensure-ics12 t))
(chess-engine-send nil (concat (chess-ply-to-algebraic (car args))
"\n")))
((memq event '(accept-connect accept-undo accept-draw accept-abort))
(chess-engine-send nil "accept\n"))
((memq event '(decline-connect decline-undo decline-draw decline-abort))
(chess-engine-send nil "decline\n"))
((eq event 'resign)
(chess-engine-send nil "resign\n"))
((eq event 'abort)
(chess-engine-send nil "abort\n"))
((eq event 'undo)
(chess-engine-send nil (format "takeback %d\n" (car args))))
((eq event 'send)
(comint-send-string (get-buffer-process (current-buffer)) (car args)))))
(defun chess-ics-filter (string)
(save-excursion
(if chess-engine-last-pos
(goto-char chess-engine-last-pos)
(goto-char (point-min)))
(beginning-of-line)
(while (not (eobp))
(let ((triggers chess-ics-regexp-alist))
(while triggers
;; this could be accelerated by joining together the
;; regexps
(if (and (looking-at (concat "[^\n\r]*" (caar triggers)))
(funcall (cdar triggers)))
(setq triggers nil)
(setq triggers (cdr triggers)))))
(forward-line))
(setq chess-engine-last-pos (point))))
(defun chess-ics-strip-cr (string)
(while (string-match "\r" string)
(setq string (replace-match "" t t string)))
string)
(provide 'chess-ics)
;;; chess-ics.el ends here
|
