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-rw-r--r--gnu/games/chess/Xchess/parse.c386
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diff --git a/gnu/games/chess/Xchess/parse.c b/gnu/games/chess/Xchess/parse.c
deleted file mode 100644
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--- a/gnu/games/chess/Xchess/parse.c
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-/* This file contains code for X-CHESS.
- Copyright (C) 1986 Free Software Foundation, Inc.
-
-This file is part of X-CHESS.
-
-X-CHESS is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY. No author or distributor
-accepts responsibility to anyone for the consequences of using it
-or for whether it serves any particular purpose or works at all,
-unless he says so in writing. Refer to the X-CHESS General Public
-License for full details.
-
-Everyone is granted permission to copy, modify and redistribute
-X-CHESS, but only under the conditions described in the
-X-CHESS General Public License. A copy of this license is
-supposed to have been given to you along with X-CHESS so you
-can know your rights and responsibilities. It should be in a
-file named COPYING. Among other things, the copyright notice
-and this notice must be preserved on all copies. */
-
-
-/* RCS Info: $Revision: 1.1.1.1 $ on $Date: 1993/06/12 14:41:06 $
- * $Source: /home/ncvs/src/gnu/games/chess/Xchess/parse.c,v $
- * Copyright (c) 1986 Wayne A. Christopher, U. C. Berkeley CAD Group
- * Permission is granted to do anything with this code except sell it
- * or remove this message.
- *
- * Parse a sequence of chess moves...
- */
-
-#include "xchess.h"
-
-bool loading_flag = false;
-bool loading_paused = false;
-
-static char *line;
-
-/* Load a record file in. This returns a number of things -- the board, the
- * list of moves, and whose turn it is.
- */
-
-void
-load_game(file)
- char *file;
-{
- FILE *fp;
- char buf[BSIZE];
- bool eflag;
- move *m;
- board *tmpboard = alloc(board);
-
- if (eq(file, "xchess.game") && saveflag) {
- message_add(win1,
- "Oops, I just overwrote the\nfile xchess.game...\n",
- true);
- message_add(win1, "I hope you had another copy.\n", true);
- return;
- }
- if (!(fp = fopen(file, "r"))) {
- perror(file);
- return;
- }
-
- /* Get a few lines... */
- fgets(buf, BSIZE, fp);
- message_add(win1, buf, false);
- if (!oneboard)
- message_add(win2, buf, false);
-
- fgets(buf, BSIZE, fp);
- message_add(win1, buf, false);
- if (!oneboard)
- message_add(win2, buf, false);
-
- fgets(buf, BSIZE, fp);
- if (eq(buf, "\tenglish\n"))
- eflag = true;
- else if (eq(buf, "\talgebraic\n"))
- eflag = false;
- else {
- fprintf(stderr, "Can't decide whether this is english...\n");
- return;
- }
-
- board_init(tmpboard);
- line = NULL;
- m = parse_file(fp, tmpboard, eflag);
- tfree(tmpboard);
-
- /* Now apply these moves to the board we were given... */
- loading_flag = true;
- while (m) {
- if (!quickflag)
- XSync(win1->display, 0);
- win_process(true);
- if (!quickflag)
- sleep(1);
- if (!loading_paused) {
- prog_move(m);
- m = m->next;
- }
- }
- loading_flag = false;
- if (line)
- message_add(win1, line, false);
-
- while (fgets(buf, BSIZE, fp))
- message_add(win1, buf, false);
-
- fclose(fp);
-
- return;
-}
-
-/* Given a starting position (usually the beginning board configuration),
- * read in a file of moves.
- */
-
-move *
-parse_file(fp, b, english)
- FILE *fp;
- board *b;
- bool english;
-{
- move *mvs = NULL, *end = NULL;
- char buf[BSIZE], *s, *t;
-
- while (fgets(buf, BSIZE, fp)) {
- if (*buf == '#')
- continue;
- s = buf;
-
- /* The move number... */
- if (!(t = gettok(&s)))
- break;
- if (!isdigit(*t)) {
- line = copy(buf);
- break;
- }
-
- if (!(t = gettok(&s)))
- break;
- if (end)
- end = end->next = (english ? parse_move(b, t, WHITE) :
- parse_imove(b, t, WHITE));
- else
- mvs = end = (english ? parse_move(b, t, WHITE) :
- parse_imove(b, t, WHITE));
- if (!end) {
- fprintf(stderr, "Can't parse %s\n", buf);
- return (NULL);
- }
- board_move(b, end);
-
- if (!(t = gettok(&s)))
- break;
- if (end)
- end = end->next = (english ? parse_move(b, t, BLACK) :
- parse_imove(b, t, BLACK));
- else
- mvs = end = (english ? parse_move(b, t, BLACK) :
- parse_imove(b, t, BLACK));
- if (!end) {
- fprintf(stderr, "Can't parse %s\n", buf);
- return (NULL);
- }
- board_move(b, end);
- }
-
- return (mvs);
-}
-
-/* Parse a move. The move format accepted is as follows -
- * move: spec-spec
- * capture: specxspec
- * kcastle: 2 o's
- * qcastle: 3 o's
- * A spec is either piece/pos, piece, or just pos. A pos consists of a column
- * name followed by a row number. If the column name is kr, kn, kb, k, q,
- * qb, qn, or qr, then the row number is according to the english system,
- * or if it is a-h then it is according to the international system.
- *
- *** As of now the spec must include the position.
- */
-
-move *
-parse_move(b, str, w)
- board *b;
- char *str;
- color w;
-{
- move *m = alloc(move);
- char *s;
- char spec1[16], spec2[16];
- int i, j;
-
-if (debug) fprintf(stderr, "parsing %s\n", str);
-
- /* Check for castles. */
- for (s = str, i = 0; *s; s++)
- if ((*s == 'o') || (*s == 'O'))
- i++;
- if (i == 2) {
- m->type = KCASTLE;
- m->piece.type = KING;
- m->piece.color = w;
- return (m);
- } else if (i == 3) {
- m->type = QCASTLE;
- m->piece.type = KING;
- m->piece.color = w;
- return (m);
- }
- if (index(str, '-'))
- m->type = MOVE;
- else if (index(str, 'x'))
- m->type = CAPTURE;
- else
- return (NULL);
- for (i = 0; str[i]; i++)
- if ((str[i] == 'x') || (str[i] == '-'))
- break;
- else
- spec1[i] = str[i];
- spec1[i] = '\0';
- for (i++, j = 0; str[i]; i++, j++)
- if ((str[i] == 'x') || (str[i] == '-'))
- break;
- else
- spec2[j] = str[i];
- spec2[j] = '\0';
-
- /* Now decode the specifications. */
- s = spec1;
- switch (*s) {
- case 'p': case 'P':
- m->piece.type = PAWN; break;
- case 'r': case 'R':
- m->piece.type = ROOK; break;
- case 'n': case 'N':
- m->piece.type = KNIGHT; break;
- case 'b': case 'B':
- m->piece.type = BISHOP; break;
- case 'q': case 'Q':
- m->piece.type = QUEEN; break;
- case 'k': case 'K':
- m->piece.type = KING; break;
- default:
- return (NULL);
- }
- m->piece.color = w;
- s += 2;
-
- /* Now get the {q,k}{,b,n,r}n string... */
- if ((s[0] == 'q') && (s[1] == 'r'))
- m->fromx = 0, s += 2;
- else if ((s[0] == 'q') && (s[1] == 'n'))
- m->fromx = 1, s += 2;
- else if ((s[0] == 'q') && (s[1] == 'b'))
- m->fromx = 2, s += 2;
- else if ((s[0] == 'q') && isdigit(s[1]))
- m->fromx = 3, s += 1;
- else if ((s[0] == 'k') && isdigit(s[1]))
- m->fromx = 4, s += 1;
- else if ((s[0] == 'k') && (s[1] == 'b'))
- m->fromx = 5, s += 2;
- else if ((s[0] == 'k') && (s[1] == 'n'))
- m->fromx = 6, s += 2;
- else if ((s[0] == 'k') && (s[1] == 'r'))
- m->fromx = 7, s += 2;
- m->fromy = ((w == WHITE) ? (SIZE - atoi(s)) : (atoi(s) - 1));
-
- if ((b->square[m->fromy][m->fromx].color != w) ||
- (b->square[m->fromy][m->fromx].type != m->piece.type)) {
- fprintf(stderr, "Error: bad stuff\n");
- return (NULL);
- }
-
- s = spec2;
- if (m->type == CAPTURE) {
- switch (*s) {
- case 'p': case 'P':
- m->taken.type = PAWN; break;
- case 'r': case 'R':
- m->taken.type = ROOK; break;
- case 'n': case 'N':
- m->taken.type = KNIGHT; break;
- case 'b': case 'B':
- m->taken.type = BISHOP; break;
- case 'q': case 'Q':
- m->taken.type = QUEEN; break;
- case 'k': case 'K':
- m->taken.type = KING; break;
- default:
- return (NULL);
- }
- m->taken.color = ((w == WHITE) ? BLACK : WHITE);
- s += 2;
- }
-
- /* Now get the {q,k}{,b,n,r}n string... */
- if ((s[0] == 'q') && (s[1] == 'r'))
- m->tox = 0, s += 2;
- else if ((s[0] == 'q') && (s[1] == 'n'))
- m->tox = 1, s += 2;
- else if ((s[0] == 'q') && (s[1] == 'b'))
- m->tox = 2, s += 2;
- else if ((s[0] == 'q') && isdigit(s[1]))
- m->tox = 3, s += 1;
- else if ((s[0] == 'k') && isdigit(s[1]))
- m->tox = 4, s += 1;
- else if ((s[0] == 'k') && (s[1] == 'b'))
- m->tox = 5, s += 2;
- else if ((s[0] == 'k') && (s[1] == 'n'))
- m->tox = 6, s += 2;
- else if ((s[0] == 'k') && (s[1] == 'r'))
- m->tox = 7, s += 2;
- m->toy = ((w == WHITE) ? (SIZE - atoi(s)) : (atoi(s) - 1));
-
- if ((m->type == CAPTURE) && ((b->square[m->toy][m->tox].color !=
- m->taken.color) || (b->square[m->toy][m->tox].type !=
- m->taken.type))) {
- fprintf(stderr, "Error: bad stuff\n");
- return (NULL);
- }
-
- return (m);
-}
-
-/* Parse an algebraic notation move. This is a lot easier... */
-
-move *
-parse_imove(b, buf, w)
- board *b;
- char *buf;
- color w;
-{
- char *s;
- move *m = alloc(move);
- int n;
-
-if (debug) fprintf(stderr, "(alg) parsing %s\n", buf);
-
- for (s = buf, n = 0; *s; s++)
- if ((*s == 'o') || (*s == 'O'))
- n++;
- s = buf;
-
- if (n == 2)
- m->type = KCASTLE;
- else if (n == 3)
- m->type = QCASTLE;
- else {
- m->fromx = *s++ - 'a';
- m->fromy = SIZE - (*s++ - '0');
- m->tox = *s++ - 'a';
- m->toy = SIZE - (*s++ - '0');
- m->piece = b->square[m->fromy][m->fromx];
- m->taken = b->square[m->toy][m->tox];
- if (m->taken.color == NONE)
- m->type = MOVE;
- else
- m->type = CAPTURE;
- /* for pawns we must account for en passant */
- if (m->piece.type == PAWN) {
- if (m->type == MOVE && m->fromx != m->tox) {
- m->enpassant = 1;
- m->type = CAPTURE;
- }
- }
- }
-
- if (m->piece.color != w) {
- fprintf(stderr, "Error: parse_imove: piece of wrong color!\n");
- return (NULL);
- }
- if ((m->piece.type == KING) && (m->fromy == m->toy) && (m->fromx == 4)
- && (m->tox == 6))
- m->type = KCASTLE;
- else if ((m->piece.type == KING) && (m->fromy == m->toy) &&
- (m->fromx == 4) && (m->tox == 2))
- m->type = QCASTLE;
-
- return (m);
-}
-
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