diff options
Diffstat (limited to 'chess-pos.el')
| -rw-r--r-- | chess-pos.el | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/chess-pos.el b/chess-pos.el index 1f35b45..03415d2 100644 --- a/chess-pos.el +++ b/chess-pos.el @@ -21,7 +21,7 @@ ;; module. ;; Once you have a chess position, there are several things you can do -;; with i. First of all, a coordinate system of octal indices is +;; with it. First of all, a coordinate system of octal indices is ;; used, where ?\044 signifies rank 4 file 4 (i.e., "e4"). Rank is ;; numbered 0 to 7, top to bottom, and file is 0 to 7, left to right. ;; For those who wish to use ASCII coordinates, such as "e4", there @@ -97,7 +97,7 @@ This variable automatically becomes buffer-local when changed.") ;; index of pawn that can be captured en passant nil ;; can white and black castle on king or queen side? - 63 56 7 0 + ?\077 ?\070 ?\007 ?\000 ;; is the side to move in: `check', `checkmate', `stalemate' nil ;; which color is it to move next? @@ -411,6 +411,24 @@ or one of the symbols: `check', `checkmate', `stalemate'." (chess-pos-set-annotations position (assq-delete-all opcode (chess-pos-annotations position)))) +(defun chess-pos-read-epd-file (file) + "Reads in an EPD file and returns a list of positions." + (let (positions) + (with-temp-buffer + (insert-file-literally file) + (goto-char (point-min)) + (while (re-search-forward "[bnrqkpBNRQKP1-8/]+ [bw] [KQkq-]+ [1-8-]" + nil t) + (let ((pos (chess-fen-to-pos (match-string 0)))) + (save-restriction + (narrow-to-region (point) (line-end-position)) + (while (re-search-forward " *\\([^ ]+\\) \\([^;]+\\); *" + nil t) + (chess-pos-add-annotation pos (cons (intern (match-string 1)) + (match-string 2))))) + (setq positions (cons pos positions))))) + positions)) + (defun chess-pos-preceding-ply (position) "Delete the given EPD OPCODE." (assert (vectorp position)) |