WebSVN – Games.Chess Giants – Blame – /engine-crafty/epdglue.c

Rev	Author	Line No.	Line
33	pmbaty	1	/>>> epdglue.c: glue to connect Crafty to the EPD Kit routines /
		2	#if defined(EPD)
		3	/* Revised: 1996.04.21 */
		4	/*
		5	Copyright (C) 1996 by Steven J. Edwards (sje@mv.mv.com)
		6	All rights reserved. This code may be freely redistibuted and used by
		7	both research and commerical applications. No warranty exists.
		8	*/
		9	/*
		10	The contents of this source file form the programmatic glue between
		11	the host program Crafty and the EPD Kit. Therefore, this file will
		12	have to be changed if used with a different host program. Also, the
		13	contents of the prototype include file (epdglue.h) may also require
		14	modification for a different host.
		15	The contents of the other source files in the EPD Kit (epddefs.h,
		16	epd.h, and epd.c) should not have to be changed for different hosts.
		17	*/
		18	/*
		19	This file was originally prepared on an Apple Macintosh using the
		20	Metrowerks CodeWarrior 6 ANSI C compiler. Tabs are set at every
		21	four columns. Further testing and development was performed on a
		22	generic PC running Linux 1.2.9 and using the gcc 2.6.3 compiler.
		23	*/
		24	/* system includes */
		25	# if defined(UNIX)
		26	# include <unistd.h>
		27	# endif
		28	# include <ctype.h>
		29	# include <time.h>
		30	# if !defined(UNIX)
		31	# include <process.h>
		32	# endif
		33	/* Crafty includes */
		34	# include "chess.h"
		35	# include "data.h"
		36	/* EPD Kit definitions (host program independent) */
		37	# include "epddefs.h"
		38	/* EPD Kit routine prototypes (host program independent) */
		39	# include "epd.h"
		40	/* prototypes for this file (host program dependent) */
		41	# include "epdglue.h"
		42	/* EPD glue command type */
		43	typedef siT egcommT, *egcommptrT;
		44
		45	# define egcommL 26
		46	# define egcomm_nil (-1)
108	pmbaty	47	# define egcomm_epdapgn 0 /* append a PGN game to a file */
		48	# define egcomm_epdbfix 1 /* fix file for Bookup import */
		49	# define egcomm_epdcert 2 /* display certain evaluation (if possible) */
		50	# define egcomm_epdcics 3 /* slave to an Internet Chess Server */
		51	# define egcomm_epdcomm 4 /* slave to the Duplex referee program */
		52	# define egcomm_epddpgn 5 /* display the current game in PGN */
		53	# define egcomm_epddsml 6 /* display SAN move list */
		54	# define egcomm_epddstr 7 /* display PGN Seven Tag Roster */
		55	# define egcomm_epddtpv 8 /* display PGN tag pair value */
		56	# define egcomm_epdenum 9 /* enumerate EPD file */
		57	# define egcomm_epdhelp 10 /* display EPD help */
		58	# define egcomm_epdlink 11 /* slave to the Argus referee program */
		59	# define egcomm_epdlpgn 12 /* load a PGN game from a file */
		60	# define egcomm_epdlrec 13 /* load an EPD record form a file */
		61	# define egcomm_epdmore 14 /* more help */
		62	# define egcomm_epdnoop 15 /* no operation */
		63	# define egcomm_epdpfdn 16 /* process file: data normalization */
		64	# define egcomm_epdpfdr 17 /* process file: data repair */
		65	# define egcomm_epdpfga 18 /* process file: general analysis */
		66	# define egcomm_epdpflc 19 /* process file: locate cooks */
		67	# define egcomm_epdpfop 20 /* process file: operation purge */
		68	# define egcomm_epdscor 21 /* score EPD benchmark result file */
		69	# define egcomm_epdshow 22 /* show EPD four fields for current position */
		70	# define egcomm_epdspgn 23 /* save a PGN game to a file */
		71	# define egcomm_epdstpv 24 /* set PGN tag pair value */
		72	# define egcomm_epdtest 25 /* developer testing */
33	pmbaty	73	/* output text buffer */
		74	# define tbufL 256
		75	static char tbufv[tbufL];
		76
		77	/* EPD glue command strings */
		78	static charptrT egcommstrv[egcommL];
		79
		80	/* EPD glue command string descriptions */
		81	static charptrT eghelpstrv[egcommL];
		82
		83	/* EPD glue command parameter counts (includes command token) */
		84	/* the current (default) EPD game structure */
		85	static gamptrT default_gamptr;
		86
		87	/--> EGPrint: print a string to the output /
		88	static
		89	void EGPrint(charptrT s) {
		90	/* this is an internal EPD glue routine */
		91	/*
		92	This routine is provided as an alternative to direct writing to the
		93	standard output. All EPD glue printing output goes through here. The
		94	idea is that the host program may have some special requirements for
		95	printing output (like a window display), so a convenient single point
		96	is provided to handle this.
		97	Note that there is no corresponding routine for reading from the
		98	standard input because the EPD glue does no interactive reading, except
		99	for a single getchar() call in the epdhelp display pager.
		100	*/
		101	/* for Crafty, the standard output is used */
		102	printf("%s", s);
		103	return;
		104	}
		105
		106	/--> EGPrintTB: print the contents of the text buffer /
		107	static
		108	void EGPrintTB(void) {
		109	/* this is an internal EPD glue routine */
		110	EGPrint(tbufv);
		111	return;
		112	}
		113
		114	/--> EGPL: print a string followed by a newline /
		115	static
		116	void EGPL(charptrT s) {
		117	/* this is an internal EPD glue routine */
		118	EGPrint(s);
		119	EGPrint("\n");
		120	return;
		121	}
		122
		123	/--> EGLocateCommand: locate an EPD glue command from a token /
		124	static egcommT EGLocateCommand(charptrT s) {
		125	egcommT egcomm, index;
		126
		127	/* this is an internal EPD glue routine */
		128	/* set the default return value: no match */
		129	egcomm = egcomm_nil;
		130	/* scan the EPD glue command string vector */
		131	index = 0;
		132	while ((index < egcommL) && (egcomm == egcomm_nil))
		133	if (strcmp(s, egcommstrv[index]) == 0)
		134	egcomm = index;
		135	else
		136	index++;
		137	return egcomm;
		138	}
		139
		140	/--> EGMapFromHostColor: map a color from the host to the EPD style /
		141	static cT EGMapFromHostColor(siT color) {
		142	cT c;
		143
		144	/* this is an internal glue routine */
		145	/* map from Crafty's color representation */
		146	if (color == 1)
		147	c = c_w;
		148	else
		149	c = c_b;
		150	return c;
		151	}
		152
		153	/--> EGMapToHostColor: map a color to the host from the EPD style /
		154	static siT EGMapToHostColor(cT c) {
		155	siT color;
		156
		157	/* this is an internal glue routine */
		158	/* map to Crafty's color representation */
		159	if (c == c_w)
		160	color = 1;
		161	else
		162	color = 0;
		163	return color;
		164	}
		165
		166	/--> EGMapFromHostCP: map a color piece from the host to the EPD style /
		167	static cpT EGMapFromHostCP(siT hostcp) {
		168	cpT cp = 0;
		169
		170	/* this is an internal glue routine */
		171	/* map from Crafty's color-piece representation */
		172	switch (hostcp) {
		173	case -queen:
		174	cp = cp_bq;
		175	break;
		176	case -rook:
		177	cp = cp_br;
		178	break;
		179	case -bishop:
		180	cp = cp_bb;
		181	break;
		182	case -king:
		183	cp = cp_bk;
		184	break;
		185	case -knight:
		186	cp = cp_bn;
		187	break;
		188	case -pawn:
		189	cp = cp_bp;
		190	break;
		191	case 0:
		192	cp = cp_v0;
		193	break;
		194	case pawn:
		195	cp = cp_wp;
		196	break;
		197	case knight:
		198	cp = cp_wn;
		199	break;
		200	case king:
		201	cp = cp_wk;
		202	break;
		203	case bishop:
		204	cp = cp_wb;
		205	break;
		206	case rook:
		207	cp = cp_wr;
		208	break;
		209	case queen:
		210	cp = cp_wq;
		211	break;
		212	};
		213	return cp;
		214	}
		215
		216	/--> EGMapToHostCP: map a color piece to the host from the EPD style /
		217	static siT EGMapToHostCP(cpT cp) {
		218	siT hostcp = 0;
		219
		220	/* this is an internal glue routine */
		221	/* map to Crafty's color-piece representation */
		222	switch (cp) {
		223	case cp_wp:
		224	hostcp = pawn;
		225	break;
		226	case cp_wn:
		227	hostcp = knight;
		228	break;
		229	case cp_wb:
		230	hostcp = bishop;
		231	break;
		232	case cp_wr:
		233	hostcp = rook;
		234	break;
		235	case cp_wq:
		236	hostcp = queen;
		237	break;
		238	case cp_wk:
		239	hostcp = king;
		240	break;
		241	case cp_bp:
		242	hostcp = -pawn;
		243	break;
		244	case cp_bn:
		245	hostcp = -knight;
		246	break;
		247	case cp_bb:
		248	hostcp = -bishop;
		249	break;
		250	case cp_br:
		251	hostcp = -rook;
		252	break;
		253	case cp_bq:
		254	hostcp = -queen;
		255	break;
		256	case cp_bk:
		257	hostcp = -king;
		258	break;
		259	case cp_v0:
		260	hostcp = 0;
		261	break;
		262	};
		263	return hostcp;
		264	}
		265
		266	/--> EGMapFromHostSq: map square index from host style /
		267	static sqT EGMapFromHostSq(siT index) {
		268	sqT sq;
		269
		270	/* this is an internal glue routine */
		271	/* Crafty's square index is the same as the EPD Kit square index */
		272	sq = index;
		273	return sq;
		274	}
		275
		276	/--> EGMapToHostSq: map square index to host style /
		277	static siT EGMapToHostSq(sqT sq) {
		278	siT index;
		279
		280	/* this is an internal glue routine */
		281	/* Crafty's square index is the same as the EPD Kit square index */
		282	index = sq;
		283	return index;
		284	}
		285
		286	/--> EGMapFromHostScore: map score from host style /
		287	static cpevT EGMapFromHostScore(liT score) {
		288	cpevT cpev;
		289	liT distance;
		290
		291	/* this is an internal EPD glue routine */
		292	/* check for a forced mate */
		293	if (score >= (MATE - MAXPLY)) {
		294	/* convert forced mate score */
		295	distance = (MATE - score) / 2;
154	pmbaty	296	cpev = synth_mate(distance);
33	pmbaty	297	} else if (score <= (MAXPLY - MATE)) {
		298	/* convert forced loss score */
		299	distance = (MATE + score) / 2;
154	pmbaty	300	cpev = synth_loss(distance);
33	pmbaty	301	} else {
		302	/* convert regular score */
154	pmbaty	303	cpev = score;
33	pmbaty	304	};
		305	return cpev;
		306	}
		307
		308	/--> EGMapFromHostMove: map move from host style to EPD style /
		309	static mT EGMapFromHostMove(liT move) {
		310	mT m;
		311	siT flag;
		312
		313	/* this is an internal EPD glue routine */
		314	/* the EPD current position must be properly set */
		315	m.m_flag = 0;
		316	m.m_frsq = EGMapFromHostSq((siT) From(move));
		317	m.m_tosq = EGMapFromHostSq((siT) To(move));
		318	m.m_frcp = EPDFetchCP(m.m_frsq);
		319	m.m_tocp = EPDFetchCP(m.m_tosq);
		320	/* determine special case move indication */
		321	flag = 0;
		322	if (!flag)
		323	if ((m.m_frcp == cp_wk) && (m.m_frsq == sq_e1) && (m.m_tosq == sq_g1)) {
		324	m.m_scmv = scmv_cks;
		325	flag = 1;
		326	};
		327	if (!flag)
		328	if ((m.m_frcp == cp_bk) && (m.m_frsq == sq_e8) && (m.m_tosq == sq_g8)) {
		329	m.m_scmv = scmv_cks;
		330	flag = 1;
		331	};
		332	if (!flag)
		333	if ((m.m_frcp == cp_wk) && (m.m_frsq == sq_e1) && (m.m_tosq == sq_c1)) {
		334	m.m_scmv = scmv_cqs;
		335	flag = 1;
		336	};
		337	if (!flag)
		338	if ((m.m_frcp == cp_bk) && (m.m_frsq == sq_e8) && (m.m_tosq == sq_c8)) {
		339	m.m_scmv = scmv_cqs;
		340	flag = 1;
		341	};
		342	if (!flag)
		343	if ((m.m_frcp == cp_wp) && (m.m_tosq == EPDFetchEPSQ())) {
		344	m.m_scmv = scmv_epc;
		345	flag = 1;
		346	};
		347	if (!flag)
		348	if ((m.m_frcp == cp_bp) && (m.m_tosq == EPDFetchEPSQ())) {
		349	m.m_scmv = scmv_epc;
		350	flag = 1;
		351	};
		352	if (!flag)
		353	if (Promote(move) != 0) {
		354	switch (Promote(move)) {
		355	case knight:
		356	m.m_scmv = scmv_ppn;
		357	break;
		358	case bishop:
		359	m.m_scmv = scmv_ppb;
		360	break;
		361	case rook:
		362	m.m_scmv = scmv_ppr;
		363	break;
		364	case queen:
		365	m.m_scmv = scmv_ppq;
		366	break;
		367	};
		368	flag = 1;
		369	};
		370	if (!flag)
		371	m.m_scmv = scmv_reg;
		372	return m;
		373	}
		374
		375	/--> EGGetIndexedHostPosition: copy from indexed host position /
		376	static
		377	void EGGetIndexedHostPosition(TREE * RESTRICT tree, siT posdex, int active) {
		378	sqT sq;
		379	rbT rb;
		380	cT actc;
		381	castT cast;
		382	sqT epsq;
		383	siT hmvc;
		384	siT fmvn;
		385
		386	/* this is an internal EPD glue routine */
		387	/*
		388	This routine is called from within the EPD glue to copy the host program's
		389	current position at the given dpeth into the EPD Kit. Information about
		390	the previous EPD Kit current position is lost.
		391	*/
		392	/* read from the host piece placement */
		393	for (sq = sq_a1; sq <= sq_h8; sq++)
		394	rb.rbv[sq] = EGMapFromHostCP(tree->position.board[EGMapToHostSq(sq)]);
		395	/* read from the host piece active color */
		396	actc = EGMapFromHostColor((siT) active);
		397	/* read from the host piece castling availability */
		398	cast = 0;
		399	switch (tree->status[posdex].castle[1]) {
		400	case 0:
		401	break;
		402	case 1:
		403	cast \|= cf_wk;
		404	break;
		405	case 2:
		406	cast \|= cf_wq;
		407	break;
		408	case 3:
		409	cast \|= cf_wk \| cf_wq;
		410	break;
		411	};
		412	switch (tree->status[posdex].castle[0]) {
		413	case 0:
		414	break;
		415	case 1:
		416	cast \|= cf_bk;
		417	break;
		418	case 2:
		419	cast \|= cf_bq;
		420	break;
		421	case 3:
		422	cast \|= cf_bk \| cf_bq;
		423	break;
		424	};
		425	/* read from the host piece en passant target square */
		426	epsq = sq_nil;
		427	if (tree->status[posdex].enpassant_target != 0) {
		428	sq = sq_a1;
		429	while ((epsq == sq_nil) && (sq <= sq_h8))
		430	if (tree->status[posdex].enpassant_target == EGMapToHostSq(sq))
		431	epsq = sq;
		432	else
		433	sq++;
		434	};
		435	/* read from the host halfmove clock */
		436	hmvc = tree->status[posdex].reversible;
		437	/* read from the host fullmove number */
		438	fmvn = move_number;
		439	/* set the EPD current position */
		440	EPDSetCurrentPosition(&rb, actc, cast, epsq, hmvc, fmvn);
		441	return;
		442	}
		443
		444	/--> EGGetHostPosition: copy from host position to EPD Kit position /
		445	static
		446	void EGGetHostPosition(void) {
		447	/* this is an internal EPD glue routine */
		448	/*
		449	This routine is called from within the EPD glue to copy the host program's
		450	current position into the EPD Kit. Information about the previous EPD Kit
		451	current position is lost.
		452	*/
		453	/* transfer from ply zero host position */
		454	EGGetIndexedHostPosition(block[0], 0, game_wtm);
		455	return;
		456	}
		457
		458	/--> EGPutHostPosition: copy from EPD Kit position to host position /
		459	static
		460	void EGPutHostPosition(void) {
		461	sqT sq;
		462	rbT rb;
		463	cT actc;
		464	castT cast;
		465	sqT epsq;
		466	siT hmvc;
		467	siT fmvn;
		468	siT index;
		469	TREE *tree = block[0];
		470
		471	/* this is an internal EPD glue routine */
		472	/*
		473	This routine is called from within the EPD glue to copy the EPD Kit's current
		474	position into the host program. If the previous host program current position
		475	is different from the new position, then information about the previous host
		476	program current position is lost. This means that the host program preserves
		477	history information if and only if such preservation is appropriate.
		478	Actually, the host position data is completely overwritten, so the above
		479	comment is temporarily false, but will be true as developement proceeds.
		480	*/
		481	/* fetch the EPD current position data items */
		482	rb = *EPDFetchBoard();
		483	actc = EPDFetchACTC();
		484	cast = EPDFetchCAST();
		485	epsq = EPDFetchEPSQ();
		486	hmvc = EPDFetchHMVC();
		487	fmvn = EPDFetchFMVN();
		488	/* copy the board into the host board */
		489	for (sq = sq_a1; sq <= sq_h8; sq++)
154	pmbaty	490	tree->position.board[EGMapToHostSq(sq)] = EGMapToHostCP(rb.rbv[sq]);
33	pmbaty	491	/* copy the active color */
		492	game_wtm = EGMapToHostColor(actc);
		493	/* copy the castling availibility */
		494	tree->status[0].castle[1] = 0;
		495	if (cast & cf_wk)
		496	tree->status[0].castle[1] += 1;
		497	if (cast & cf_wq)
		498	tree->status[0].castle[1] += 2;
		499	tree->status[0].castle[0] = 0;
		500	if (cast & cf_bk)
		501	tree->status[0].castle[0] += 1;
		502	if (cast & cf_bq)
		503	tree->status[0].castle[0] += 2;
		504	/* copy the en passant target square */
		505	if (epsq == sq_nil)
		506	tree->status[0].enpassant_target = 0;
		507	else
154	pmbaty	508	tree->status[0].enpassant_target = EGMapToHostSq(epsq);
33	pmbaty	509	/* copy the halfmove clock */
154	pmbaty	510	tree->status[0].reversible = hmvc;
33	pmbaty	511	/* copy the fullmove number */
		512	move_number = fmvn;
		513	/* set secondary host data items */
		514	SetChessBitBoards(tree);
108	pmbaty	515	rep_index = 0;
33	pmbaty	516	tree->rep_list[0] = HashKey;
		517	moves_out_of_book = 0;
		518	last_mate_score = 0;
		519	/* clear the host killer information */
		520	for (index = 0; index < MAXPLY; index++) {
		521	tree->killers[index].move1 = 0;
		522	tree->killers[index].move2 = 0;
		523	}
		524	/* clear miscellaneous host items */
		525	ponder_move = 0;
		526	last_pv.pathd = 0;
		527	last_pv.pathl = 0;
		528	over = 0;
		529	return;
		530	}
		531
		532	/--> EGEncodeHostHistory: generate a string from host move history /
		533	static charptrT EGEncodeHostHistory(void) {
		534	charptrT sptr;
		535	gamptrT gamptr;
		536	pgnstrT pgnstr;
		537	mptrT mptr;
		538	siT flag;
		539	siT ch = 0;
		540	charptrT s;
		541	mT m;
		542
		543	/* this works only for games starting form the initial position */
		544	/* set default return value: failure */
		545	sptr = NULL;
		546	/* set okay */
		547	flag = 1;
		548	/* reset the EPD current position */
		549	EPDReset();
		550	/* make sure the host history file exists */
		551	if (history_file == NULL)
		552	flag = 0;
		553	else {
		554	rewind(history_file);
		555	ch = fgetc(history_file);
		556	};
		557	/* open a game structure */
		558	gamptr = EPDGameOpen();
		559	/* copy tag data from default game structure */
		560	if (default_gamptr != NULL)
		561	for (pgnstr = 0; pgnstr < pgnstrL; pgnstr++)
		562	EPDPGNPutSTR(gamptr, pgnstr, EPDPGNGetSTR(default_gamptr, pgnstr));
		563	/* copy GTIM from default game structure */
		564	if (default_gamptr != NULL)
		565	EPDPutGTIM(gamptr, EPDGetGTIM(default_gamptr));
		566	/* read the host history file */
		567	while (flag && (ch != EOF)) {
		568	/* skip whitespace */
		569	while ((ch != EOF) && isspace(ch))
		570	ch = fgetc(history_file);
		571	/* if not EOF, then construct a move */
		572	if (ch != EOF) {
		573	/* attach the first character */
		574	s = EPDStringGrab("");
		575	s = EPDStringAppendChar(s, (char) ch);
		576	ch = fgetc(history_file);
		577	/* attach the remaining characters */
		578	while ((ch != EOF) && !isspace(ch)) {
		579	s = EPDStringAppendChar(s, (char) ch);
		580	ch = fgetc(history_file);
		581	};
		582	/* match the move */
		583	EPDGenMoves();
		584	mptr = EPDSANDecodeAux(s, 0);
		585	if (mptr == NULL)
		586	flag = 0;
		587	else {
		588	/* execute the move */
		589	m = *mptr;
		590	EPDGameAppendMove(gamptr, &m);
		591	EPDExecuteUpdate(&m);
		592	EPDCollapse();
		593	};
		594	/* release move buffer storage */
		595	EPDMemoryFree(s);
		596	};
		597	};
		598	/* construct the string representation of the game */
		599	if (flag)
		600	sptr = EPDPGNHistory(gamptr);
		601	/* clean up if there was a problem */
		602	if (!flag)
		603	if (sptr != NULL) {
		604	EPDMemoryFree(sptr);
		605	sptr = NULL;
		606	};
		607	/* close the game structure */
		608	EPDGameClose(gamptr);
		609	return sptr;
		610	}
		611
		612	/--> EGIterate: wrapper function for host Iterate() call /
		613	static
		614	int EGIterate(siT wtm_flag, siT think_flag) {
		615	int value;
		616	epdptrT epdptr;
		617	TREE *tree = block[0];
		618
		619	EPDGenMoves();
		620	/* save current kit position */
		621	epdptr = EPDGetCurrentPosition();
		622	/* more than one move, execute regular search */
		623	value = Iterate(wtm_flag, think_flag, 0);
		624	/* restore kit position */
		625	EPDRealize(epdptr);
		626	EPDReleaseEPD(epdptr);
		627	EPDGenMoves();
		628	last_pv = tree->pv[0];
		629	last_value = value;
		630	return value;
		631	}
		632
		633	/--> EGCommHandler: callback routine for handling Duplex events /
		634	static epdptrT EGCommHandler(epdptrT epdptr0, siptrT flagptr) {
		635	epdptrT epdptr1;
		636	eopptrT eopptr;
		637	charptrT s;
		638	fptrT fptr;
		639	mptrT mptr;
		640	mT m;
		641	sanT san;
		642	int move;
		643	char tv[tL];
		644	TREE *tree = block[0];
		645
		646	/* set flag: no errors (so far) */
		647	*flagptr = 1;
		648	/* clear result */
		649	epdptr1 = NULL;
		650	/* process according to input referee command */
		651	switch (EPDExtractRefcomIndex(epdptr0)) {
		652	case refcom_conclude:
		653	/* end of game */
		654	s = EPDPGNHistory(default_gamptr);
		655	if (s == NULL)
		656	*flagptr = 0;
		657	else {
		658	/* append game to PGN output file */
154	pmbaty	659	sprintf(tv, "c%05hd.pgn", ((siT) getpid()));
33	pmbaty	660	fptr = fopen(tv, "a");
		661	if (fptr == NULL)
		662	*flagptr = 0;
		663	else {
		664	fprintf(fptr, "%s", s);
		665	fclose(fptr);
		666	};
		667	EPDMemoryFree(s);
		668	};
		669	/* clean up and remove the temporary history file */
		670	if (history_file != NULL) {
		671	fclose(history_file);
		672	history_file = NULL;
		673	};
154	pmbaty	674	sprintf(tv, "h%05hd.pml", ((siT) getpid()));
33	pmbaty	675	remove(tv);
		676	/* close the game structure */
		677	if (default_gamptr != NULL) {
		678	EPDGameClose(default_gamptr);
		679	default_gamptr = NULL;
		680	};
		681	break;
		682	case refcom_disconnect:
		683	/* channel shutdown */
		684	/* clean up and remove the temporary history file */
		685	if (history_file != NULL) {
		686	fclose(history_file);
		687	history_file = NULL;
		688	};
154	pmbaty	689	sprintf(tv, "h%05hd.pml", ((siT) getpid()));
33	pmbaty	690	remove(tv);
		691	/* ensure game structure is closed */
		692	if (default_gamptr != NULL) {
		693	EPDGameClose(default_gamptr);
		694	default_gamptr = NULL;
		695	};
		696	break;
		697	case refcom_execute:
		698	/* execute the supplied move */
		699	eopptr = EPDLocateEOPCode(epdptr0, epdso_sm);
108	pmbaty	700	move = InputMove(tree, 0, game_wtm, 0, 0, eopptr->eop_headeov->eov_str);
33	pmbaty	701	if (history_file) {
		702	fseek(history_file, ((((move_number - 1) * 2) + 1 - game_wtm) * 10),
		703	SEEK_SET);
		704	fprintf(history_file, "%9s\n", eopptr->eop_headeov->eov_str);
		705	}
108	pmbaty	706	MakeMoveRoot(tree, game_wtm, move);
33	pmbaty	707	game_wtm = Flip(game_wtm);
		708	if (game_wtm)
		709	move_number++;
		710	/* execute the move in the EPD Kit */
		711	EPDGenMoves();
		712	mptr = EPDSANDecodeAux(eopptr->eop_headeov->eov_str, 0);
		713	m = *mptr;
		714	EPDGameAppendMove(default_gamptr, &m);
		715	EPDExecuteUpdate(&m);
		716	EPDCollapse();
		717	break;
		718	case refcom_fault:
		719	/* a problem occurred */
		720	EGPL("EPDCommHandler: refcom fault");
		721	*flagptr = 0;
		722	break;
		723	case refcom_inform:
		724	/* process incidental information */
		725	EPDCopyOutPTP(default_gamptr, epdptr0);
		726	/* update the current game termination marker */
		727	s = EPDPGNGetSTR(default_gamptr, pgnstr_result);
		728	if ((s == NULL) \|\| (strcmp(s, "*") == 0))
		729	EPDPutGTIM(default_gamptr, gtim_u);
		730	else if (strcmp(s, "1-0") == 0)
		731	EPDPutGTIM(default_gamptr, gtim_w);
		732	else if (strcmp(s, "0-1") == 0)
		733	EPDPutGTIM(default_gamptr, gtim_b);
		734	else if (strcmp(s, "1/2-1/2") == 0)
		735	EPDPutGTIM(default_gamptr, gtim_d);
		736	break;
		737	case refcom_respond:
		738	/* execute the supplied move (if any) */
		739	eopptr = EPDLocateEOPCode(epdptr0, epdso_sm);
		740	if (eopptr != NULL) {
		741	move =
108	pmbaty	742	InputMove(tree, 0, game_wtm, 0, 0, eopptr->eop_headeov->eov_str);
33	pmbaty	743	if (history_file) {
		744	fseek(history_file, ((((move_number - 1) * 2) + 1 - game_wtm) * 10),
		745	SEEK_SET);
		746	fprintf(history_file, "%9s\n", eopptr->eop_headeov->eov_str);
		747	}
108	pmbaty	748	MakeMoveRoot(tree, game_wtm, move);
33	pmbaty	749	game_wtm = Flip(game_wtm);
		750	if (game_wtm)
		751	move_number++;
		752	/* execute the move in the EPD Kit */
		753	EPDGenMoves();
		754	mptr = EPDSANDecodeAux(eopptr->eop_headeov->eov_str, 0);
		755	m = *mptr;
		756	EPDGameAppendMove(default_gamptr, &m);
		757	EPDExecuteUpdate(&m);
		758	EPDCollapse();
		759	};
		760	/* calculate move + respond */
		761	EPDGenMoves();
		762	if (EPDFetchMoveCount() > 0) {
		763	/* at least one move exists, set up for search */
		764	ponder_move = 0;
		765	thinking = 1;
		766	last_pv.pathd = 0;
		767	last_pv.pathl = 0;
		768	tree->status[1] = tree->status[0];
		769	/* search */
108	pmbaty	770	EGIterate((siT) game_wtm, (siT) think);
33	pmbaty	771	/* process search result */
108	pmbaty	772	strcpy(tv, OutputMove(tree, 0, game_wtm, last_pv.path[1]));
33	pmbaty	773	move = last_pv.path[1];
		774	/* locate SAN move */
		775	mptr = EPDSANDecodeAux(tv, 0);
		776	m = *mptr;
		777	EPDSANEncode(&m, san);
		778	/* output to temporary history file */
		779	if (history_file) {
		780	fseek(history_file, ((((move_number - 1) * 2) + 1 - game_wtm) * 10),
		781	SEEK_SET);
		782	fprintf(history_file, "%9s\n", san);
		783	}
		784	/* update host position */
108	pmbaty	785	MakeMoveRoot(tree, game_wtm, move);
33	pmbaty	786	game_wtm = Flip(game_wtm);
		787	if (game_wtm)
		788	move_number++;
		789	/* create reply EPD structure */
		790	epdptr1 = EPDGetCurrentPosition();
		791	/* add in referee request */
		792	EPDAddOpSym(epdptr1, epdso_refreq, EPDFetchRefreqStr(refreq_reply));
		793	/* add in supplied move */
		794	EPDAddOpSym(epdptr1, epdso_sm, san);
		795	/* execute the move in the EPD Kit */
		796	mptr = EPDSANDecodeAux(san, 0);
		797	m = *mptr;
		798	EPDGameAppendMove(default_gamptr, &m);
		799	EPDExecuteUpdate(&m);
		800	EPDCollapse();
		801	} else {
		802	/* no moves exist, so no move response possible */
		803	epdptr1 = EPDGetCurrentPosition();
		804	eopptr = EPDCreateEOPCode(epdso_refreq);
		805	EPDAppendEOV(eopptr,
		806	EPDCreateEOVSym(EPDFetchRefreqStr(refreq_reply)));
		807	EPDAppendEOP(epdptr1, eopptr);
		808	};
		809	break;
		810	case refcom_reset:
		811	/* reset EPD Kit */
		812	EPDReset();
		813	/* reset host for a new game */
		814	ponder = 0;
		815	ponder_move = 0;
		816	last_pv.pathd = 0;
		817	last_pv.pathl = 0;
		818	InitializeChessBoard(tree);
108	pmbaty	819	InitializeHashTables(0);
33	pmbaty	820	game_wtm = 1;
		821	move_number = 1;
		822	/* open the temporary history file */
		823	if (history_file != NULL) {
		824	fclose(history_file);
		825	history_file = NULL;
		826	};
154	pmbaty	827	sprintf(tv, "h%05hd.pml", ((siT) getpid()));
33	pmbaty	828	remove(tv);
		829	history_file = fopen(tv, "w+");
		830	/* open the current game structure */
		831	if (default_gamptr != NULL)
		832	EPDGameClose(default_gamptr);
		833	default_gamptr = EPDGameOpen();
		834	break;
		835	case refcom_nil:
		836	*flagptr = 0;
		837	break;
		838	};
		839	/* clean up if there was a problem */
		840	if (!(*flagptr))
		841	if (epdptr1 != NULL) {
		842	EPDReleaseEPD(epdptr1);
		843	epdptr1 = NULL;
		844	};
		845	return epdptr1;
		846	}
		847
		848	/--> EGProcessAPGN: process the EG command epdapgn /
		849	static siT EGProcessAPGN(void) {
		850	siT flag;
		851	charptrT s;
		852	fptrT fptr;
		853
		854	/* this is an internal EPD glue routine */
		855	/* set the default return value: success */
		856	flag = 1;
		857	/* parameter count check */
		858	if (EPDTokenCount() != 2) {
		859	EGPL("This command takes one parameter.");
		860	flag = 0;
		861	};
		862	/* process the epdapgn command */
		863	if (flag) {
		864	s = EGEncodeHostHistory();
		865	if (s == NULL)
		866	flag = 0;
		867	else {
		868	fptr = fopen(EPDTokenFetch(1), "a");
		869	if (fptr == NULL)
		870	flag = 0;
		871	else {
		872	fprintf(fptr, "%s", s);
		873	fclose(fptr);
		874	};
		875	EPDMemoryFree(s);
		876	};
		877	};
		878	return flag;
		879	}
		880
		881	/--> EGProcessBFIX: process the EG command epdbfix /
		882	static siT EGProcessBFIX(void) {
		883	siT flag;
		884	fptrT fptr0, fptr1;
		885	eopptrT eopptr;
		886	epdptrT epdptr, nptr;
		887	charptrT s;
		888	char ev[epdL];
		889
		890	/* this is an internal EPD glue routine */
		891	/* set the default return value: success */
		892	flag = 1;
		893	/* clear the file pointers */
		894	fptr0 = fptr1 = NULL;
		895	/* parameter count check */
		896	if (EPDTokenCount() != 3) {
		897	EGPL("This command takes two parameters");
		898	flag = 0;
		899	};
		900	/* set up the input file */
		901	if (flag) {
		902	fptr0 = fopen(EPDTokenFetch(1), "r");
		903	if (fptr0 == NULL) {
		904	sprintf(tbufv, "Can't open %s for reading\n", EPDTokenFetch(1));
		905	EGPrintTB();
		906	flag = 0;
		907	};
		908	};
		909	/* set up the output file */
		910	if (flag) {
		911	fptr1 = fopen(EPDTokenFetch(2), "w");
		912	if (fptr1 == NULL) {
		913	sprintf(tbufv, "Can't open %s for writing\n", EPDTokenFetch(2));
		914	EGPrintTB();
		915	flag = 0;
		916	};
		917	};
		918	/* scan the file */
		919	if (flag)
		920	while (flag && (fgets(ev, (epdL - 1), fptr0) != NULL)) {
		921	/* decode the record into an EPD structure */
		922	epdptr = EPDDecode(ev);
		923	/* check record decode validity */
		924	if (epdptr == NULL)
		925	flag = 0;
		926	else {
		927	/* clone the input EPD structure base */
		928	nptr = EPDCloneEPDBase(epdptr);
		929	/* copy the ce operation */
		930	eopptr = EPDLocateEOPCode(epdptr, epdso_ce);
		931	if (eopptr != NULL)
		932	EPDAppendEOP(nptr, EPDCloneEOP(eopptr));
		933	/* copy the pv operation */
		934	eopptr = EPDLocateEOPCode(epdptr, epdso_pv);
		935	if (eopptr != NULL)
		936	EPDAppendEOP(nptr, EPDCloneEOP(eopptr));
		937	/* output the new EPD strucutre */
		938	s = EPDEncode(nptr);
		939	fprintf(fptr1, "%s\n", s);
		940	EPDMemoryFree(s);
		941	/* deallocate both EPD structures */
		942	EPDReleaseEPD(epdptr);
		943	EPDReleaseEPD(nptr);
		944	};
		945	};
		946	/* ensure file close */
		947	if (fptr0 != NULL)
		948	fclose(fptr0);
		949	if (fptr1 != NULL)
		950	fclose(fptr1);
		951	return flag;
		952	}
		953
		954	/--> EGProcessCICS: process the EG command epdcics /
		955	static siT EGProcessCICS(void) {
		956	siT flag;
		957
		958	/* this is an internal EPD glue routine */
		959	/* set the default return value: success */
		960	flag = 1;
		961	/* parameter count check */
		962	if (EPDTokenCount() != 3) {
		963	EGPL("This command takes two parameters");
		964	flag = 0;
		965	};
		966	/* process the epdcics command */
		967	if (flag) {
		968	EGPL("This command is not yet implemented.");
		969	flag = 0;
		970	};
		971	return flag;
		972	}
		973
		974	/--> EGProcessCOMM: process the EG command epdcomm /
		975	static siT EGProcessCOMM(void) {
		976	siT flag;
		977	fptrT save_history_file;
		978	gamptrT save_default_gamptr;
		979
		980	/* this is an internal EPD glue routine */
		981	/* set the default return value: success */
		982	flag = 1;
		983	/* parameter count check */
		984	if (EPDTokenCount() != 2) {
		985	EGPL("This command takes one parameter.");
		986	flag = 0;
		987	};
		988	/* process the epdcomm command */
		989	if (flag) {
		990	/* save the history file pointer */
		991	save_history_file = history_file;
		992	history_file = NULL;
		993	/* save the game structure */
		994	save_default_gamptr = default_gamptr;
		995	default_gamptr = NULL;
		996	/* process via callback */
		997	EGPL("Duplex slave mode begin");
		998	flag = EPDComm(EGCommHandler, EPDTokenFetch(1));
		999	EGPL("Duplex slave mode end");
		1000	/* restore the game structure */
		1001	if (default_gamptr != NULL) {
		1002	EPDGameClose(default_gamptr);
		1003	default_gamptr = NULL;
		1004	};
		1005	default_gamptr = save_default_gamptr;
		1006	/* restore the history file pointer */
		1007	history_file = save_history_file;
		1008	};
		1009	return flag;
		1010	}
		1011
		1012	/--> EGProcessDPGN: process the EG command epddpgn /
		1013	static siT EGProcessDPGN(void) {
		1014	siT flag;
		1015	charptrT s;
		1016
		1017	/* this is an internal EPD glue routine */
		1018	/* set the default return value: success */
		1019	flag = 1;
		1020	/* parameter count check */
		1021	if (EPDTokenCount() != 1) {
		1022	EGPL("This command takes no parameters.");
		1023	flag = 0;
		1024	};
		1025	/* process the epddpgn command */
		1026	if (flag) {
		1027	s = EGEncodeHostHistory();
		1028	if (s == NULL)
		1029	flag = 0;
		1030	else {
		1031	EGPrint(s);
		1032	EPDMemoryFree(s);
		1033	};
		1034	};
		1035	return flag;
		1036	}
		1037
		1038	/--> EGProcessDSML: process the EG command epddsml /
		1039	static siT EGProcessDSML(void) {
		1040	siT flag;
		1041	siT count, index;
		1042	siT length, column;
		1043	mT m;
		1044	sanT san;
		1045
		1046	/* this is an internal EPD glue routine */
		1047	/* set the default return value: success */
		1048	flag = 1;
		1049	/* parameter count check */
		1050	if (EPDTokenCount() != 1) {
		1051	EGPL("This command takes no parameters.");
		1052	flag = 0;
		1053	};
		1054	/* process the epddsml command */
		1055	if (flag) {
		1056	/* copy the current host position into the EPD Kit */
		1057	EGGetHostPosition();
		1058	/* generate and count */
		1059	EPDGenMoves();
		1060	count = EPDFetchMoveCount();
		1061	switch (count) {
		1062	case 0:
		1063	EGPL("No moves are available.");
		1064	break;
		1065	case 1:
		1066	EGPL("There is 1 move available.");
		1067	break;
		1068	default:
		1069	sprintf(tbufv, "There are %hd moves available.\n", count);
		1070	EGPrintTB();
		1071	break;
		1072	};
		1073	/* list moves */
		1074	if (count > 0) {
		1075	column = 0;
		1076	EPDSortSAN();
		1077	for (index = 0; index < count; index++) {
		1078	m = *EPDFetchMove(index);
		1079	EPDSANEncode(&m, san);
154	pmbaty	1080	length = strlen(san);
33	pmbaty	1081	if ((column + 1 + length) < columnL) {
		1082	sprintf(tbufv, " %s", san);
		1083	EGPrintTB();
		1084	column += 1 + length;
		1085	} else {
		1086	EGPrint("\n");
		1087	EGPrint(san);
		1088	column = length;
		1089	};
		1090	};
		1091	if (column > 0)
		1092	EGPrint("\n");
		1093	};
		1094	};
		1095	return flag;
		1096	}
		1097
		1098	/--> EGProcessDSTR: process the EG command epddstr /
		1099	static siT EGProcessDSTR(void) {
		1100	siT flag;
		1101	charptrT s;
		1102
		1103	/* this is an internal EPD glue routine */
		1104	/* set the default return value: success */
		1105	flag = 1;
		1106	/* parameter count check */
		1107	if (EPDTokenCount() != 1) {
		1108	EGPL("This command takes no parameters.");
		1109	flag = 0;
		1110	};
		1111	/* process the epddstr command */
		1112	if (flag) {
		1113	s = EPDPGNGenSTR(default_gamptr);
		1114	EGPrint(s);
		1115	EPDMemoryFree(s);
		1116	};
		1117	return flag;
		1118	}
		1119
		1120	/--> EGProcessDTPV: process the EG command epddtpv /
		1121	static siT EGProcessDTPV(void) {
		1122	siT flag;
		1123	pgnstrT pgnstr;
		1124
		1125	/* this is an internal EPD glue routine */
		1126	/* set the default return value: success */
		1127	flag = 1;
		1128	/* parameter count check */
		1129	if (EPDTokenCount() != 2) {
		1130	EGPL("This command takes one parameter.");
		1131	flag = 0;
		1132	};
		1133	/* process the epddtpv command */
		1134	if (flag) {
		1135	pgnstr = EPDPGNFetchTagIndex(EPDTokenFetch(1));
		1136	if (pgnstr == pgnstr_nil) {
		1137	EGPL("Unknown tag name; available tag names are:");
		1138	for (pgnstr = 0; pgnstr < pgnstrL; pgnstr++) {
		1139	EGPrint(" ");
		1140	EGPrint(EPDPGNFetchTagName(pgnstr));
		1141	};
		1142	EGPrint("\n");
		1143	flag = 0;
		1144	} else {
		1145	sprintf(tbufv, "[%s \"%s\"]\n", EPDPGNFetchTagName(pgnstr),
		1146	EPDPGNGetSTR(default_gamptr, pgnstr));
		1147	EGPrintTB();
		1148	};
		1149	};
		1150	return flag;
		1151	}
		1152
		1153	/--> EGProcessENUM: process the EG command epdenum /
		1154	static siT EGProcessENUM(void) {
		1155	siT flag;
		1156	liT total;
		1157
		1158	/* this is an internal EPD glue routine */
		1159	/* set the default return value: success */
		1160	flag = 1;
		1161	/* parameter count check */
		1162	if (EPDTokenCount() != 4) {
		1163	EGPL("This command takes three parameters");
		1164	flag = 0;
		1165	};
		1166	/* process the epdenum command */
		1167	if (flag) {
		1168	flag =
		1169	EPDEnumerateFile((siT) atol(EPDTokenFetch(1)), EPDTokenFetch(2),
		1170	EPDTokenFetch(3), &total);
		1171	if (flag) {
		1172	sprintf(tbufv, "Enumeration to depth %ld totals %ld\n",
		1173	atol(EPDTokenFetch(1)), total);
		1174	EGPrintTB();
		1175	};
		1176	};
		1177	return flag;
		1178	}
		1179
		1180	/--> EGProcessHELP: process the EG command epdhelp /
		1181	static siT EGProcessHELP(void) {
		1182	siT flag;
		1183	siT i;
		1184	egcommT egcomm;
		1185
		1186	/* this is an internal EPD glue routine */
		1187	/* set the default return value: success */
		1188	flag = 1;
		1189	/* parameter count check */
		1190	if (EPDTokenCount() != 1) {
		1191	EGPL("This command takes no parameters.");
		1192	flag = 0;
		1193	};
		1194	/* process the epdhelp command */
		1195	if (flag) {
		1196	/* it is not clear exactly why the next statment is needed */
108	pmbaty	1197	getchar();
33	pmbaty	1198	/* list all the commands */
		1199	egcomm = 0;
		1200	while (egcomm < egcommL) {
		1201	EGPL("Available EPD glue command list");
		1202	EGPL("-------------------------------");
		1203	i = 0;
		1204	while ((egcomm < egcommL) && (i < 10)) {
		1205	sprintf(tbufv, "%s: %s\n", egcommstrv[egcomm], eghelpstrv[egcomm]);
		1206	EGPrintTB();
		1207	i++;
		1208	egcomm++;
		1209	};
		1210	if (egcomm < egcommL) {
		1211	EGPL("");
		1212	EGPL("Press <return> for more command help");
108	pmbaty	1213	getchar();
33	pmbaty	1214	EGPL("");
		1215	};
		1216	};
		1217	};
		1218	return flag;
		1219	}
		1220
		1221	/--> EGProcessLINK: process the EG command epdlink /
		1222	static siT EGProcessLINK(void) {
		1223	siT flag;
		1224
		1225	/* this is an internal EPD glue routine */
		1226	/* set the default return value: success */
		1227	flag = 1;
		1228	/* parameter count check */
		1229	if (EPDTokenCount() != 3) {
		1230	EGPL("This command takes two parameters");
		1231	flag = 0;
		1232	};
		1233	/* process the epdlink command */
		1234	if (flag) {
		1235	EGPL("This command is not yet implemented.");
		1236	flag = 0;
		1237	};
		1238	return flag;
		1239	}
		1240
		1241	/--> EGProcessLPGN: process the EG command epdlpgn /
		1242	static siT EGProcessLPGN(void) {
		1243	siT flag;
		1244
		1245	/* this is an internal EPD glue routine */
		1246	/* set the default return value: success */
		1247	flag = 1;
		1248	/* parameter count check */
		1249	if (EPDTokenCount() != 2) {
		1250	EGPL("This command takes one parameter.");
		1251	flag = 0;
		1252	};
		1253	/* process the epdlpgn command */
		1254	if (flag) {
		1255	EGPL("This command is not yet implemented.");
		1256	flag = 0;
		1257	};
		1258	return flag;
		1259	}
		1260
		1261	/--> EGProcessLREC: process the EG command epdlrec /
		1262	static siT EGProcessLREC(void) {
		1263	siT flag;
		1264	fptrT fptr;
		1265	liT i, n;
		1266	epdptrT epdptr;
		1267	char ev[epdL];
		1268
		1269	/* this is an internal EPD glue routine */
		1270	/* set the default return value: success */
		1271	flag = 1;
		1272	/* parameter count check */
		1273	if (EPDTokenCount() != 3) {
		1274	EGPL("This command takes two parameters");
		1275	flag = 0;
		1276	};
		1277	/* process the epdlrec command */
		1278	if (flag) {
		1279	fptr = fopen(EPDTokenFetch(1), "r");
		1280	if (fptr == NULL)
		1281	flag = 0;
		1282	else {
		1283	/* read the indicated record */
		1284	i = 0;
		1285	n = atol(EPDTokenFetch(2));
		1286	while (flag && (i < n))
		1287	if (fgets(ev, (epdL - 1), fptr) == NULL)
		1288	flag = 0;
		1289	else
		1290	i++;
		1291	fclose(fptr);
		1292	/* set the current position */
		1293	if (flag) {
		1294	epdptr = EPDDecode(ev);
		1295	if (epdptr == NULL)
		1296	flag = 0;
		1297	else {
		1298	EPDRealize(epdptr);
		1299	EPDReleaseEPD(epdptr);
		1300	EGPutHostPosition();
		1301	};
		1302	};
		1303	};
		1304	};
		1305	return flag;
		1306	}
		1307
		1308	/--> EGProcessMORE: process the EG command epdmore /
		1309	static siT EGProcessMORE(void) {
		1310	siT flag;
		1311
		1312	/* this is an internal EPD glue routine */
		1313	/* set the default return value: success */
		1314	flag = 1;
		1315	/* parameter count check */
		1316	if (EPDTokenCount() != 2) {
		1317	EGPL("This command takes one parameter.");
		1318	flag = 0;
		1319	};
		1320	/* process the epdmore command */
		1321	if (flag)
		1322	switch (EGLocateCommand(EPDTokenFetch(1))) {
		1323	case egcomm_epdapgn:
		1324	EGPL("epdapgn: Append the game to a PGN file");
		1325	EGPL("");
		1326	EGPL("This command is used to append the current game to a file");
		1327	EGPL("using Portable Game Notation (PGN) format. It takes one");
		1328	EGPL("parameter which is the file name of interest.");
		1329	break;
		1330	case egcomm_epdbfix:
		1331	EGPL("epdbfix: Fix an EPD file for import into Bookup");
		1332	EGPL("");
		1333	EGPL("This command takes two parameters. Both parameters are");
		1334	EGPL("names of EPD files. The first is an existing EPD file with");
		1335	EGPL("analysis data. The second is the EPD file to be created");
		1336	EGPL("from the first by removing all operations except the ce and");
		1337	EGPL("pv operations. This second file can then be imported into");
		1338	EGPL("the Bookup program.");
		1339	break;
		1340	case egcomm_epdcert:
		1341	EGPL("epdcert: Try to display a certain evaluation");
		1342	EGPL("");
		1343	EGPL("This command takes no parameters. The current position is");
		1344	EGPL("examined for legality, and if legal, an attempt is made to");
		1345	EGPL("return an absolute certain evaluation. An absolute certain");
		1346	EGPL("evaluation is available for checkmates, stalemates, draws by");
		1347	EGPL("insufficient material, and mate in one positions. Also,");
		1348	EGPL("if there are only a few chessmen on the board, then the");
		1349	EGPL("current position is used as an index into an external file");
		1350	EGPL("corresponding to the active color and the distribution of");
		1351	EGPL("pieces. If the appropriate external file is available, the");
		1352	EGPL("position is evaluated by a single file look-up operation.");
		1353	EGPL("These files are called tablebases and they should appear in");
		1354	EGPL("the TB subdirectory of the current working directory. These");
		1355	EGPL("files may be obtained via ftp from the chess.onenet.net site");
		1356	EGPL("in the pub/chess/TB directory.");
		1357	break;
		1358	case egcomm_epdcics:
		1359	EGPL("epdcics: Slave to an Internet Chess Server");
		1360	EGPL("");
		1361	EGPL("This command causes the host program Crafty to becomed slaved");
		1362	EGPL("to an Internet Chess Server (ICS). This means that the host");
		1363	EGPL("program will follow directions from the indicated Internet");
		1364	EGPL("Chess Server until either the ICS tells the program to exit");
		1365	EGPL("slave mode or the program is interrupted by the user. This");
		1366	EGPL("command takes two parameters. The first is the name of the");
		1367	EGPL("machine running the ICS and the second is the port number in");
		1368	EGPL("use by the ICS.");
		1369	break;
		1370	case egcomm_epdcomm:
		1371	EGPL("epdcomm: Slave to the Duplex referee program");
		1372	EGPL("");
		1373	EGPL("This command causes the host program Crafty to becomed slaved");
		1374	EGPL("to the simple referee program Duplex. Duplex must be started");
		1375	EGPL("prior to entering this command. Once the host program is");
		1376	EGPL("slaved to Duplex, it will remain so until it is instructed");
		1377	EGPL("by Duplex to terminate or is interrupted by the user. This");
		1378	EGPL("command is used to support the Duplex function of controlling");
		1379	EGPL("automatic play between two host programs on the same Unix");
		1380	EGPL("system. The communication used is based on named pipes which");
		1381	EGPL("are special files that support FIFO data operation. This");
		1382	EGPL("command takes one parameter which is a base name for a pair");
		1383	EGPL("of named pipes. The host output pipe name is generated by");
		1384	EGPL("adding a \".pc0\" suffix to the base name and the host input");
		1385	EGPL("pipe name is generated by addint a \".pc1\" suffix to the");
		1386	EGPL("base name. (Both pipe files are created and later removed");
		1387	EGPL("automatically by the Duplex program.) The Duplex program is");
		1388	EGPL("given three parameters to run a series of games between two");
		1389	EGPL("host programs: the first is the base name given to the first");
		1390	EGPL("host program, the second is the base name given to the second");
		1391	EGPL("host program, and the third is the count of the number of");
		1392	EGPL("games to be played.");
		1393	break;
		1394	case egcomm_epddpgn:
		1395	EGPL("epddpgn: Display the game using PGN");
		1396	EGPL("");
		1397	EGPL("This command displays the current game using Portable Game");
		1398	EGPL("Notation (PGN). It takes no parameters.");
		1399	break;
		1400	case egcomm_epddsml:
		1401	EGPL("epddsml: Display SAN move list");
		1402	EGPL("");
		1403	EGPL("This command displays the ASCII sorted list of available");
		1404	EGPL("moves using SAN (Standard Algebraic Notation). The count");
		1405	EGPL("of moves is also displayed. This command takes no");
		1406	EGPL("parameters.");
		1407	break;
		1408	case egcomm_epddstr:
		1409	EGPL("epddstr: Display the PGN Seven Tag Roster");
		1410	EGPL("");
		1411	EGPL("This command displays the current values of each of the tag");
		1412	EGPL("pairs of the PGN Seven Tag Roster. These tags are: Event, ");
		1413	EGPL("Site, Date, Round, White, Black, and Result. This command");
		1414	EGPL("takes no parameters.");
		1415	break;
		1416	case egcomm_epddtpv:
		1417	EGPL("epddtpv: Display a PGN tag pair value");
		1418	EGPL("");
		1419	EGPL("This command displays the current value for the indicated");
		1420	EGPL("PGN tag pair. These available tag pair names are: Event, ");
		1421	EGPL("Site, Date, Round, White, Black, and Result. This command");
		1422	EGPL("takes a single parameter which is the name of the tag pair");
		1423	EGPL("to be displayed.");
		1424	break;
		1425	case egcomm_epdenum:
		1426	EGPL("epdenum: Enumerate positions in an EPD file");
		1427	EGPL("");
		1428	EGPL("This command takes three parameters. The first is a non-");
		1429	EGPL("negative integer that gives a ply depth limit. The second");
		1430	EGPL("is an input EPD file with positions to be enumerated to the");
		1431	EGPL("given depth. The third parameter is the result EPD file");
		1432	EGPL("with enumeration data given with the acd, acn, and acs");
		1433	EGPL("operations. The grand total of all enumerations is printed");
		1434	EGPL("to the standard output.");
		1435	break;
		1436	case egcomm_epdhelp:
		1437	EGPL("epdhelp: Display available epdglue commands");
		1438	EGPL("");
		1439	EGPL("This command takes no parameters. It displays a list");
		1440	EGPL("of all the epdglue commands with a single line description");
		1441	EGPL("of each command. The epdmore command gives a detailed");
		1442	EGPL("description of a specified command.");
		1443	break;
		1444	case egcomm_epdlink:
		1445	EGPL("epdlink: Slave to the Argus moderator program");
		1446	EGPL("");
		1447	EGPL("This command used to slave the host program to the Argus");
		1448	EGPL("tournament referee program. It takes two parameters. The");
		1449	EGPL("first is the name of the machine running the Argus referee");
		1450	EGPL("and the second is the port number in use by Argus on the");
		1451	EGPL("indicated machine. The Argus program must be started prior");
		1452	EGPL("to using this command. Argus acts as a general tournament");
		1453	EGPL("supervisor and mediator for any number of chessplaying");
		1454	EGPL("programs competing in a compuer chess event. It supplies");
		1455	EGPL("the participating program entrants with everything needed");
		1456	EGPL("for an entire tournament.");
		1457	break;
		1458	case egcomm_epdlpgn:
		1459	EGPL("epdlpgn: Load the game from a PGN file");
		1460	EGPL("");
		1461	EGPL("This command loads a single game from a Portable Game");
		1462	EGPL("Notation (PGN) file. If there is more than one game in the");
		1463	EGPL("file, then only the first one is loaded. This command tales");
		1464	EGPL("a single parameter which is the name of the file containing");
		1465	EGPL("the PGN data of interest.");
		1466	break;
		1467	case egcomm_epdlrec:
		1468	EGPL("epdlpgn: Load a selected EPD record from a file");
		1469	EGPL("");
		1470	EGPL("This command loads an EPD record from a file and causes it");
		1471	EGPL("to become the current position in the host program. This");
		1472	EGPL("command takes two parameters. The first is the name of the");
		1473	EGPL("file with EPD records and the second is the record number");
		1474	EGPL("of interest. The epdlrec command is intended to assist with");
		1475	EGPL("benchmark analysis by making it easy to select and load the");
		1476	EGPL("Nth record of a benchmark file.");
		1477	break;
		1478	case egcomm_epdmore:
		1479	EGPL("epdmore: Display detailed help for a given command");
		1480	EGPL("");
		1481	EGPL("This command takes a single parameter which is the name");
		1482	EGPL("of one of the available epdglue commands. A brief paragraph");
		1483	EGPL("of helpful assistance is displayed.");
		1484	break;
		1485	case egcomm_epdnoop:
		1486	EGPL("epdnoop: No operation");
		1487	EGPL("");
		1488	EGPL("This command performs no operation. It is provided for");
		1489	EGPL("development purposes.");
		1490	break;
		1491	case egcomm_epdpfdn:
108	pmbaty	1492	EGPL("epdpfdn: Process file: data normalization");
33	pmbaty	1493	EGPL("");
		1494	EGPL("This command takes two parameters. The first is the name of");
		1495	EGPL("an input EPD data file. The second is the name of the EPD");
		1496	EGPL("output file to be produced from normalizing the input. The");
		1497	EGPL("normalization process produces a canonical external");
		1498	EGPL("representation for each EPD input record.");
		1499	break;
		1500	case egcomm_epdpfdr:
108	pmbaty	1501	EGPL("epdpfdr: Process file: data repair");
33	pmbaty	1502	EGPL("");
		1503	EGPL("This command takes two parameters. The first is the name of");
		1504	EGPL("an input EPD data file. The second is the name of the EPD");
		1505	EGPL("output file to be produced from repairing the input. The");
		1506	EGPL("repair process attempts to map all chess move data present");
		1507	EGPL("in the input into Standard Algebraic Notation. This repair");
		1508	EGPL("effort affects the am, bm, pm, pv, sm, and sv operations.");
		1509	break;
		1510	case egcomm_epdpfga:
108	pmbaty	1511	EGPL("epdpfga: Process file: general analysis");
33	pmbaty	1512	EGPL("");
		1513	EGPL("This command takes two parameters. The first is the name of");
		1514	EGPL("an input EPD data file. The second is the name of the EPD");
		1515	EGPL("output file to be produced from applying general analysis");
		1516	EGPL("to each position in the input file. The output analysis is");
		1517	EGPL("contained in the acd, acn, acs, ce, and pv operations.");
		1518	break;
		1519	case egcomm_epdpflc:
108	pmbaty	1520	EGPL("epdpflc: Process file: locate cooks");
33	pmbaty	1521	EGPL("");
		1522	EGPL("This command is used to scan an EPD file and report on any");
		1523	EGPL("checkmating cooks. The signle parameter is the name of the");
		1524	EGPL("EPD file to be scanned. Each record is scanned and if the");
		1525	EGPL("centipawn evaluation indicates a forced mate, then the move");
		1526	EGPL("appearing as the result of a search is checked against the");
		1527	EGPL("moves appearing in the bm (best moves) operation on the same");
		1528	EGPL("record. If the result move does not appear in the bm list,");
		1529	EGPL("then the record is reported as a cook.");
		1530	break;
		1531	case egcomm_epdpfop:
108	pmbaty	1532	EGPL("epdpfop: Process file: operation purge");
33	pmbaty	1533	EGPL("");
		1534	EGPL("This command takes threee parameters. The first is the name");
		1535	EGPL("of an EPD operation mnemonic to be purged. The second is the");
		1536	EGPL("name fo the input EPD file, and the third is the name of the");
		1537	EGPL("EPD output to be produced by purging the specified operation");
		1538	EGPL("from the input file.");
		1539	break;
		1540	case egcomm_epdscor:
108	pmbaty	1541	EGPL("epdscor: Score EPD analysis file");
33	pmbaty	1542	EGPL("");
		1543	EGPL("This command takes one parameter. It is the name of an input");
		1544	EGPL("EPD data file containing analysis result data. The input");
		1545	EGPL("data analysis is scanned and a brief statistical report is");
		1546	EGPL("displayed.");
		1547	break;
		1548	case egcomm_epdshow:
108	pmbaty	1549	EGPL("epdshow: Show EPD four fields for the current position");
33	pmbaty	1550	EGPL("");
		1551	EGPL("This command takes no parameters. It causes the EPD four");
		1552	EGPL("data fields for the current position to be displayed.");
		1553	break;
		1554	case egcomm_epdspgn:
		1555	EGPL("epdspgn: Save the game to a PGN file");
		1556	EGPL("");
		1557	EGPL("This command is used to save the current game to a file");
		1558	EGPL("using Portable Game Notation (PGN) format. It takes one");
		1559	EGPL("parameter which is the file name of interest. The previous");
		1560	EGPL("copy of the file, if any, is overwritten.");
		1561	break;
		1562	case egcomm_epdstpv:
		1563	EGPL("epdstpv: Set a PGN tag pair value");
		1564	EGPL("");
		1565	EGPL("This command sets the current value for the indicated");
		1566	EGPL("PGN tag pair. These available tag pair names are: Event, ");
		1567	EGPL("Site, Date, Round, White, Black, and Result. This command");
		1568	EGPL("takes two parameters. The first which is the name of the");
		1569	EGPL("tag pair of interest and the second is the value to be");
		1570	EGPL("assigned. Underscore characters in the value are mapped");
		1571	EGPL("to blanks; this allows embedded spaces to appear in the");
		1572	EGPL("received value.");
		1573	break;
		1574	case egcomm_epdtest:
108	pmbaty	1575	EGPL("epdtest: Developer testing");
33	pmbaty	1576	EGPL("");
		1577	EGPL("This command takes no parameters. It is used for developer");
		1578	EGPL("testing purposes.");
		1579	break;
		1580	case egcomm_nil:
		1581	sprintf(tbufv, "Unknown command: %s\n", EPDTokenFetch(1));
		1582	EGPrintTB();
		1583	flag = 0;
		1584	break;
		1585	};
		1586	return flag;
		1587	}
		1588
		1589	/--> EGProcessNOOP: process the EG command epdnoop /
		1590	static siT EGProcessNOOP(void) {
		1591	siT flag;
		1592
		1593	/* this is an internal EPD glue routine */
		1594	/* set the default return value: success */
		1595	flag = 1;
		1596	/* process the epdnoop command */
		1597	return flag;
		1598	}
		1599
		1600	/--> EGProcessPFDN: process the EG command epdpfdn /
		1601	static siT EGProcessPFDN(void) {
		1602	siT flag;
		1603
		1604	/* this is an internal EPD glue routine */
		1605	/* set the default return value: success */
		1606	flag = 1;
		1607	/* parameter count check */
		1608	if (EPDTokenCount() != 3) {
		1609	EGPL("This command takes two parameters");
		1610	flag = 0;
		1611	};
		1612	/* process the epdpfdn command */
		1613	if (flag)
		1614	flag = EPDNormalizeFile(EPDTokenFetch(1), EPDTokenFetch(2));
		1615	return flag;
		1616	}
		1617
		1618	/--> EGProcessPFDR: process the EG command epdpfdr /
		1619	static siT EGProcessPFDR(void) {
		1620	siT flag;
		1621
		1622	/* this is an internal EPD glue routine */
		1623	/* set the default return value: success */
		1624	flag = 1;
		1625	/* parameter count check */
		1626	if (EPDTokenCount() != 3) {
		1627	EGPL("This command takes two parameters");
		1628	flag = 0;
		1629	};
		1630	/* process the epdpfdr command */
		1631	if (flag)
		1632	flag = EPDRepairFile(EPDTokenFetch(1), EPDTokenFetch(2));
		1633	return flag;
		1634	}
		1635
		1636	/--> EGProcessPFGA: process the EG command epdpfga /
		1637	static siT EGProcessPFGA(void) {
		1638	siT flag;
		1639	fptrT fptr0, fptr1;
		1640	liT record;
		1641	time_t start_time;
		1642	liT result;
		1643	siT index;
		1644	liT host_acd, host_acn, host_acs;
		1645	cpevT host_ce;
		1646	charptrT s;
		1647	liT move;
		1648	mT m;
		1649	sanT san;
		1650	eovptrT eovptr;
		1651	eopptrT eopptr;
		1652	epdptrT epdptr;
		1653	char ev[epdL];
		1654	TREE *tree = block[0];
		1655
		1656	/* this is an internal EPD glue routine */
		1657	/* set the default return value: success */
		1658	flag = 1;
		1659	/* clear the file pointers */
		1660	fptr0 = fptr1 = NULL;
		1661	/* parameter count check */
		1662	if (EPDTokenCount() != 3) {
		1663	EGPL("This command takes two parameters");
		1664	flag = 0;
		1665	};
		1666	/* set up the input file */
		1667	if (flag) {
		1668	fptr0 = fopen(EPDTokenFetch(1), "r");
		1669	if (fptr0 == NULL) {
		1670	sprintf(tbufv, "Can't open %s for reading\n", EPDTokenFetch(1));
		1671	EGPrintTB();
		1672	flag = 0;
		1673	};
		1674	};
		1675	/* set up the output file */
		1676	if (flag) {
		1677	fptr1 = fopen(EPDTokenFetch(2), "w");
		1678	if (fptr1 == NULL) {
		1679	sprintf(tbufv, "Can't open %s for writing\n", EPDTokenFetch(2));
		1680	EGPrintTB();
		1681	flag = 0;
		1682	};
		1683	};
		1684	/* scan the file */
		1685	if (flag) {
		1686	/* initialize the record count */
		1687	record = 0;
		1688	/* read one record per loop */
		1689	while (flag && (fgets(ev, (epdL - 1), fptr0) != NULL)) {
		1690	/* decode the record into an EPD structure */
		1691	epdptr = EPDDecode(ev);
		1692	/* check record decode validity */
		1693	if (epdptr == NULL)
		1694	flag = 0;
		1695	else {
		1696	/* set up the position in the EPD Kit */
		1697	EPDRealize(epdptr);
		1698	/* legality test */
		1699	if (!EPDIsLegal())
		1700	flag = 0;
		1701	else {
		1702	/* output record information to the display */
		1703	sprintf(tbufv, "PFGA: EPD record: %ld", (record + 1));
		1704	EGPrintTB();
		1705	if (((eopptr = EPDLocateEOPCode(epdptr, epdso_id)) != NULL)
		1706	&& ((eovptr = eopptr->eop_headeov) != NULL)
		1707	&& ((s = eovptr->eov_str) != NULL)) {
108	pmbaty	1708	EGPrint(" ID: ");
33	pmbaty	1709	EGPrint(s);
		1710	};
		1711	EGPrint("\n");
		1712	/* output record information to the log file */
		1713	if (log_file != NULL) {
		1714	fprintf(log_file, "PFGA: EPD record: %ld", (record + 1));
		1715	if (((eopptr = EPDLocateEOPCode(epdptr, epdso_id)) != NULL)
		1716	&& ((eovptr = eopptr->eop_headeov) != NULL)
		1717	&& ((s = eovptr->eov_str) != NULL))
		1718	fprintf(log_file, " ID: %s", s);
		1719	fprintf(log_file, "\n");
		1720	};
		1721	/* set up the host current position */
		1722	EGPutHostPosition();
		1723	/* set host search parameters */
		1724	tree->status[1] = tree->status[0];
108	pmbaty	1725	iteration = 0;
33	pmbaty	1726	ponder = 0;
		1727	/* get the starting time */
		1728	start_time = time(NULL);
		1729	/* run host search; EPD Kit position may be changed */
		1730	result = EGIterate(EGMapToHostColor(EPDFetchACTC()), think);
		1731	/* refresh the EPD Kit current position */
		1732	EGGetHostPosition();
		1733	/* extract analysis count: depth */
108	pmbaty	1734	host_acd = iteration;
33	pmbaty	1735	if (host_acd == 0)
		1736	host_acd = 1;
		1737	/* insert analysis count: depth */
		1738	EPDAddOpInt(epdptr, epdso_acd, host_acd);
		1739	/* extract analysis count: nodes */
154	pmbaty	1740	host_acn = tree->nodes_searched;
33	pmbaty	1741	if (host_acn == 0)
		1742	host_acn = 1;
		1743	/* insert analysis count: nodes */
		1744	EPDAddOpInt(epdptr, epdso_acn, host_acn);
		1745	/* extract analysis count: seconds */
154	pmbaty	1746	host_acs = time(NULL) - start_time;
33	pmbaty	1747	if (host_acs == 0)
		1748	host_acs = 1;
		1749	/* insert analysis count: seconds */
		1750	EPDAddOpInt(epdptr, epdso_acs, host_acs);
		1751	/* extract centipawn evaluation */
		1752	host_ce = EGMapFromHostScore(result);
		1753	/*
		1754	host_ce = (EGMapToHostColor(EPDFetchACTC())) ? result : -result;
		1755	*/
		1756	/* insert centipawn evaluation */
		1757	EPDAddOpInt(epdptr, epdso_ce, host_ce);
		1758	/* delete predicted move */
		1759	EPDDropIfLocEOPCode(epdptr, epdso_pm);
		1760	/* extract/insert predicted variation */
		1761	EPDDropIfLocEOPCode(epdptr, epdso_pv);
		1762	eopptr = EPDCreateEOPCode(epdso_pv);
		1763	for (index = 1; index < (int) tree->pv[0].pathl; index++) {
		1764	/* generate moves for the current position */
		1765	EPDGenMoves();
		1766	/* fetch the predicted move at this ply */
		1767	move = tree->pv[0].path[index];
		1768	/* map the host move to EPD style */
		1769	m = EGMapFromHostMove(move);
		1770	/* set the flag bits in the EPD move */
		1771	EPDSetMoveFlags(&m);
		1772	/* construct the SAN for the move */
		1773	EPDSANEncode(&m, san);
		1774	/* create and append the SAN move */
		1775	eovptr = EPDCreateEOVSym(san);
		1776	EPDAppendEOV(eopptr, eovptr);
		1777	/* execute the move to update the EPD position */
		1778	EPDExecuteUpdate(&m);
		1779	};
		1780	/* retract predicted variation moves */
		1781	EPDRetractAll();
		1782	/* append the pv operation to the EPD structure */
		1783	EPDAppendEOP(epdptr, eopptr);
		1784	/* encode the EPD into a string, write, and release */
		1785	s = EPDEncode(epdptr);
		1786	fprintf(fptr1, "%s\n", s);
		1787	fflush(fptr1);
		1788	EPDMemoryFree(s);
		1789	};
		1790	/* deallocate the EPD structure */
		1791	EPDReleaseEPD(epdptr);
		1792	};
		1793	/* increment EPD record count */
		1794	record++;
		1795	};
		1796	};
		1797	/* ensure file close */
		1798	if (fptr0 != NULL)
		1799	fclose(fptr0);
		1800	if (fptr1 != NULL)
		1801	fclose(fptr1);
		1802	return flag;
		1803	}
		1804
		1805	/--> EGProcessPFLC: process the EG command epdpflc /
		1806	static siT EGProcessPFLC(void) {
		1807	siT flag;
		1808	fptrT fptr;
		1809	epdptrT epdptr;
		1810	eopptrT eopptr;
		1811	eovptrT eovptr;
		1812	liT record;
		1813	charptrT s;
		1814	char ev[epdL];
		1815
		1816	/* this is an internal EPD glue routine */
		1817	/* set the default return value: success */
		1818	flag = 1;
		1819	/* parameter count check */
		1820	if (EPDTokenCount() != 2) {
		1821	EGPL("This command takes one parameter.");
		1822	flag = 0;
		1823	};
		1824	/* clear the file pointer */
		1825	fptr = NULL;
		1826	/* set up the input file */
		1827	if (flag) {
		1828	fptr = fopen(EPDTokenFetch(1), "r");
		1829	if (fptr == NULL) {
		1830	sprintf(tbufv, "Can't open %s for reading\n", EPDTokenFetch(1));
		1831	EGPrintTB();
		1832	flag = 0;
		1833	};
		1834	};
		1835	/* scan the file */
		1836	if (flag) {
		1837	/* clear record count */
		1838	record = 0;
		1839	/* scan each record */
		1840	while (flag && (fgets(ev, (epdL - 1), fptr) != NULL)) {
		1841	/* decode the record into an EPD structure */
		1842	epdptr = EPDDecode(ev);
		1843	/* check record decode validity */
		1844	if (epdptr == NULL)
		1845	flag = 0;
		1846	else {
		1847	/* did the expectation indicate a forced mate? */
		1848	if (((eopptr = EPDLocateEOPCode(epdptr, epdso_ce)) != NULL)
		1849	&& ((eovptr = eopptr->eop_headeov) != NULL)
		1850	&& forced_mate(atol(eovptr->eov_str))) {
		1851	/* get the analysis result move from the pv */
		1852	eopptr = EPDLocateEOPCode(epdptr, epdso_pv);
		1853	if ((eopptr != NULL) && ((eovptr = eopptr->eop_headeov) != NULL)) {
		1854	/* get a pointer to the result move */
		1855	s = eovptr->eov_str;
		1856	/* get the best move operation */
		1857	eopptr = EPDLocateEOPCode(epdptr, epdso_bm);
		1858	if (eopptr != NULL) {
		1859	/* check for a matching best move */
		1860	eovptr = EPDLocateEOV(eopptr, s);
		1861	/* if not found, then it's a cook */
		1862	if (eovptr == NULL) {
		1863	/* issue report */
		1864	sprintf(tbufv, "PFLC: record %ld: cook: %s", (record + 1),
		1865	s);
		1866	EGPrintTB();
		1867	eopptr = EPDLocateEOPCode(epdptr, epdso_id);
		1868	if ((eopptr != NULL)
		1869	&& ((eovptr = eopptr->eop_headeov) != NULL)) {
		1870	EGPrint(" ID: ");
		1871	EGPrint(eovptr->eov_str);
		1872	};
		1873	EGPrint("\n");
		1874	};
		1875	};
		1876	};
		1877	};
		1878	/* deallocate the EPD structure */
		1879	EPDReleaseEPD(epdptr);
		1880	};
		1881	/* next record */
		1882	record++;
		1883	};
		1884	};
		1885	/* ensure input file closed */
		1886	if (fptr != NULL)
		1887	fclose(fptr);
		1888	return flag;
		1889	}
		1890
		1891	/--> EGProcessPFOP: process the EG command epdpfop /
		1892	static siT EGProcessPFOP(void) {
		1893	siT flag;
		1894
		1895	/* this is an internal EPD glue routine */
		1896	/* set the default return value: success */
		1897	flag = 1;
		1898	/* parameter count check */
		1899	if (EPDTokenCount() != 4) {
		1900	EGPL("This command takes three parameters");
		1901	flag = 0;
		1902	};
		1903	/* process the epdpfop command */
		1904	if (flag)
		1905	flag =
		1906	EPDPurgeOpFile(EPDTokenFetch(1), EPDTokenFetch(2), EPDTokenFetch(3));
		1907	return flag;
		1908	}
		1909
		1910	/--> EGProcessSCOR: process the EG command epdscor /
		1911	static siT EGProcessSCOR(void) {
		1912	siT flag;
		1913	bmsT bms;
		1914
		1915	/* this is an internal EPD glue routine */
		1916	/* set the default return value: success */
		1917	flag = 1;
		1918	/* parameter count check */
		1919	if (EPDTokenCount() != 2) {
		1920	EGPL("This command takes one parameter.");
		1921	flag = 0;
		1922	};
		1923	/* process the epdscor command */
		1924	if (flag) {
		1925	flag = EPDScoreFile(EPDTokenFetch(1), &bms);
		1926	if (flag) {
		1927	sprintf(tbufv, "total: %ld\n", bms.bms_total);
		1928	EGPrintTB();
		1929	if (bms.bms_total != 0) {
		1930	if (bms.bms_acdflag) {
		1931	sprintf(tbufv, "total acd: %ld mean total acd: %.2f\n",
		1932	bms.bms_total_acd, ((lrT) bms.bms_total_acd / bms.bms_total));
		1933	EGPrintTB();
		1934	};
		1935	if (bms.bms_acnflag) {
		1936	sprintf(tbufv, "total acn: %ld mean total acn: %.2f\n",
		1937	bms.bms_total_acn, ((lrT) bms.bms_total_acn / bms.bms_total));
		1938	EGPrintTB();
		1939	};
		1940	if (bms.bms_acsflag) {
		1941	sprintf(tbufv, "total acs: %ld mean total acs: %.2f\n",
		1942	bms.bms_total_acs, ((lrT) bms.bms_total_acs / bms.bms_total));
		1943	EGPrintTB();
		1944	};
		1945	if (bms.bms_acnflag && bms.bms_acsflag)
		1946	if (bms.bms_total_acs != 0) {
		1947	sprintf(tbufv, "total mean node frequency: %.2f Hz\n",
		1948	((lrT) bms.bms_total_acn / bms.bms_total_acs));
		1949	EGPrintTB();
		1950	};
		1951	sprintf(tbufv, "solve: %ld solve percent: %.2f\n", bms.bms_solve,
		1952	(((lrT) bms.bms_solve * 100.0) / bms.bms_total));
		1953	EGPrintTB();
		1954	if (bms.bms_solve != 0) {
		1955	if (bms.bms_acdflag) {
		1956	sprintf(tbufv, "solve acd: %ld mean solve acd: %.2f\n",
		1957	bms.bms_solve_acd, ((lrT) bms.bms_solve_acd / bms.bms_solve));
		1958	EGPrintTB();
		1959	};
		1960	if (bms.bms_acnflag) {
		1961	sprintf(tbufv, "solve acn: %ld mean solve acn: %.2f\n",
		1962	bms.bms_solve_acn, ((lrT) bms.bms_solve_acn / bms.bms_solve));
		1963	EGPrintTB();
		1964	};
		1965	if (bms.bms_acsflag) {
		1966	sprintf(tbufv, "solve acs: %ld mean solve acs: %.2f\n",
		1967	bms.bms_solve_acs, ((lrT) bms.bms_solve_acs / bms.bms_solve));
		1968	EGPrintTB();
		1969	};
		1970	if (bms.bms_acnflag && bms.bms_acsflag)
		1971	if (bms.bms_solve_acs != 0) {
		1972	sprintf(tbufv, "solve mean node frequency: %.2f Hz\n",
		1973	((lrT) bms.bms_solve_acn / bms.bms_solve_acs));
		1974	EGPrintTB();
		1975	};
		1976	};
		1977	sprintf(tbufv, "unsol: %ld unsol percent: %.2f\n", bms.bms_unsol,
		1978	(((lrT) bms.bms_unsol * 100.0) / bms.bms_total));
		1979	EGPrintTB();
		1980	if (bms.bms_unsol != 0) {
		1981	if (bms.bms_acdflag) {
		1982	sprintf(tbufv, "unsol acd: %ld mean unsol acd: %.2f\n",
		1983	bms.bms_unsol_acd, ((lrT) bms.bms_unsol_acd / bms.bms_unsol));
		1984	EGPrintTB();
		1985	};
		1986	if (bms.bms_acnflag) {
		1987	sprintf(tbufv, "unsol acn: %ld mean unsol acn: %.2f\n",
		1988	bms.bms_unsol_acn, ((lrT) bms.bms_unsol_acn / bms.bms_unsol));
		1989	EGPrintTB();
		1990	};
		1991	if (bms.bms_acsflag) {
		1992	sprintf(tbufv, "unsol acs: %ld mean unsol acs: %.2f\n",
		1993	bms.bms_unsol_acs, ((lrT) bms.bms_unsol_acs / bms.bms_unsol));
		1994	EGPrintTB();
		1995	};
		1996	if (bms.bms_acnflag && bms.bms_acsflag)
		1997	if (bms.bms_unsol_acs != 0) {
		1998	sprintf(tbufv, "unsol mean node frequency: %.2f Hz\n",
		1999	((lrT) bms.bms_unsol_acn / bms.bms_unsol_acs));
		2000	EGPrintTB();
		2001	};
		2002	};
		2003	};
		2004	};
		2005	};
		2006	return flag;
		2007	}
		2008
		2009	/--> EGProcessSHOW: process the EG command epdshow /
		2010	static siT EGProcessSHOW(void) {
		2011	siT flag;
		2012	charptrT s;
		2013
		2014	/* this is an internal EPD glue routine */
		2015	/* set the default return value: success */
		2016	flag = 1;
		2017	/* parameter count check */
		2018	if (EPDTokenCount() != 1) {
		2019	EGPL("This command takes no parameters.");
		2020	flag = 0;
		2021	};
		2022	/* process the epdshow command */
		2023	if (flag) {
		2024	/* load the host pointion into the EPD Kit */
		2025	EGGetHostPosition();
		2026	/* get the EPD string for the current position */
		2027	s = EPDGenBasicCurrent();
		2028	/* print and release */
		2029	sprintf(tbufv, "%s\n", s);
		2030	EGPrintTB();
		2031	EPDMemoryFree(s);
		2032	};
		2033	return flag;
		2034	}
		2035
		2036	/--> EGProcessSPGN: process the EG command epdspgn /
		2037	static siT EGProcessSPGN(void) {
		2038	siT flag;
		2039	charptrT s;
		2040	fptrT fptr;
		2041
		2042	/* this is an internal EPD glue routine */
		2043	/* set the default return value: success */
		2044	flag = 1;
		2045	/* parameter count check */
		2046	if (EPDTokenCount() != 2) {
		2047	EGPL("This command takes one parameter.");
		2048	flag = 0;
		2049	};
		2050	/* process the epdspgn command */
		2051	if (flag) {
		2052	s = EGEncodeHostHistory();
		2053	if (s == NULL)
		2054	flag = 0;
		2055	else {
		2056	fptr = fopen(EPDTokenFetch(1), "w");
		2057	if (fptr == NULL)
		2058	flag = 0;
		2059	else {
		2060	fprintf(fptr, "%s", s);
		2061	fclose(fptr);
		2062	};
		2063	EPDMemoryFree(s);
		2064	};
		2065	};
		2066	return flag;
		2067	}
		2068
		2069	/--> EGProcessSTPV: process the EG command epdstpv /
		2070	static siT EGProcessSTPV(void) {
		2071	siT flag;
		2072	pgnstrT pgnstr;
		2073	charptrT s;
		2074	liT i, length;
		2075
		2076	/* this is an internal EPD glue routine */
		2077	/* set the default return value: success */
		2078	flag = 1;
		2079	/* parameter count check */
		2080	if (EPDTokenCount() != 3) {
		2081	EGPL("This command takes two parameters");
		2082	flag = 0;
		2083	};
		2084	/* process the epdstpv command */
		2085	if (flag) {
		2086	pgnstr = EPDPGNFetchTagIndex(EPDTokenFetch(1));
		2087	if (pgnstr == pgnstr_nil) {
		2088	EGPL("Unknown tag name; available tag names are:");
		2089	for (pgnstr = 0; pgnstr < pgnstrL; pgnstr++) {
		2090	EGPrint(" ");
		2091	EGPrint(EPDPGNFetchTagName(pgnstr));
		2092	};
		2093	EGPrint("\n");
		2094	flag = 0;
		2095	} else {
		2096	/* change underscore characters to blanks */
		2097	s = EPDStringGrab(EPDTokenFetch(2));
		2098	length = strlen(s);
		2099	for (i = 0; i < length; i++)
		2100	if (*(s + i) == '_')
		2101	*(s + i) = ' ';
		2102	EPDPGNPutSTR(default_gamptr, pgnstr, s);
		2103	EPDMemoryFree(s);
		2104	};
		2105	};
		2106	return flag;
		2107	}
		2108
		2109	/--> EGProcessTEST: process the EG command epdtest /
		2110	static siT EGProcessTEST(void) {
		2111	siT flag;
		2112
		2113	/* this is an internal EPD glue routine */
		2114	/* set the default return value: success */
		2115	flag = 1;
		2116	/* parameter count check */
		2117	if (EPDTokenCount() != 1) {
		2118	EGPL("This command takes no parameters.");
		2119	flag = 0;
		2120	};
		2121	/* process the epdtest command */
		2122	if (flag) {
		2123	EGPL("This command is not yet implemented.");
		2124	flag = 0;
		2125	};
		2126	return flag;
		2127	}
		2128
		2129	/--> EGCommandCheck: check if a string starts with an EPD command token /
		2130	nonstatic int EGCommandCheck(char *s) {
		2131	siT flag;
		2132	charptrT tokenptr;
		2133	egcommT egcomm;
		2134
		2135	/* this routine is called from Option() in option.c */
		2136	/*
		2137	This routine is used to quickly check if an input command line starts with
		2138	one of the available EPD glue command tokens. The idea is that EPD action
		2139	can be quickly selected (or deselected) for any command input text string.
		2140	Because Crafty distributes command input one token at a time, the calls to
		2141	this routine in this implementation will only have a single token for input.
		2142	Other implementations that use an entire input command line will use the
		2143	full power of this routine which includes token scanning and recording
		2144	which is handled by the EPD Kit routines in the epd.c file.
		2145	*/
		2146	/* set default return value: no match */
		2147	flag = 0;
		2148	/* tokenize the input string */
		2149	EPDTokenize(s);
		2150	/* was there at least one token? */
		2151	if (EPDTokenCount() > 0) {
		2152	/* get a pointer to the first token (origin zero) */
		2153	tokenptr = EPDTokenFetch(0);
		2154	/* get the glue command indicator */
		2155	egcomm = EGLocateCommand(tokenptr);
		2156	/* was there a command match? */
		2157	if (egcomm != egcomm_nil)
		2158	flag = 1;
		2159	};
		2160	return flag;
		2161	}
		2162
		2163	/--> EGCommand: process an EPD command string /
		2164	nonstatic int EGCommand(char *s) {
		2165	siT flag;
		2166	egcommT egcomm;
		2167
		2168	/* this routine is called from Option() in option.c */
		2169	/*
		2170	This routine actviates EPD glue command processing. it is called with a
		2171	string that represents an entire EPD glue command input, including any
		2172	parameters following the command.
		2173	Because Crafty distributes command input one token at a time, it is
		2174	necessary for the host calling code to assemble a command line from the
		2175	input token stream. See the code in Option() for details.
		2176	*/
		2177	/* set the default return value: success */
		2178	flag = 1;
		2179	/* check the command string (this also tokenizes it) */
		2180	if (EGCommandCheck(s))
		2181	egcomm = EGLocateCommand(EPDTokenFetch(0));
		2182	else
		2183	egcomm = egcomm_nil;
		2184	/* was a valid EPD glue command located? */
		2185	if (egcomm == egcomm_nil) {
		2186	EGPL("EG fault: can't locate valid EG command");
		2187	flag = 0;
		2188	} else {
		2189	/* a valid command token was found; perform command dispatch */
		2190	switch (egcomm) {
		2191	case egcomm_epdapgn:
		2192	flag = EGProcessAPGN();
		2193	break;
		2194	case egcomm_epdbfix:
		2195	flag = EGProcessBFIX();
		2196	break;
		2197	case egcomm_epdcics:
		2198	flag = EGProcessCICS();
		2199	break;
		2200	case egcomm_epdcomm:
		2201	flag = EGProcessCOMM();
		2202	break;
		2203	case egcomm_epddpgn:
		2204	flag = EGProcessDPGN();
		2205	break;
		2206	case egcomm_epddsml:
		2207	flag = EGProcessDSML();
		2208	break;
		2209	case egcomm_epddstr:
		2210	flag = EGProcessDSTR();
		2211	break;
		2212	case egcomm_epddtpv:
		2213	flag = EGProcessDTPV();
		2214	break;
		2215	case egcomm_epdenum:
		2216	flag = EGProcessENUM();
		2217	break;
		2218	case egcomm_epdhelp:
		2219	flag = EGProcessHELP();
		2220	break;
		2221	case egcomm_epdlink:
		2222	flag = EGProcessLINK();
		2223	break;
		2224	case egcomm_epdlpgn:
		2225	flag = EGProcessLPGN();
		2226	break;
		2227	case egcomm_epdlrec:
		2228	flag = EGProcessLREC();
		2229	break;
		2230	case egcomm_epdmore:
		2231	flag = EGProcessMORE();
		2232	break;
		2233	case egcomm_epdnoop:
		2234	flag = EGProcessNOOP();
		2235	break;
		2236	case egcomm_epdpfdn:
		2237	flag = EGProcessPFDN();
		2238	break;
		2239	case egcomm_epdpfdr:
		2240	flag = EGProcessPFDR();
		2241	break;
		2242	case egcomm_epdpfga:
		2243	flag = EGProcessPFGA();
		2244	break;
		2245	case egcomm_epdpflc:
		2246	flag = EGProcessPFLC();
		2247	break;
		2248	case egcomm_epdpfop:
		2249	flag = EGProcessPFOP();
		2250	break;
		2251	case egcomm_epdscor:
		2252	flag = EGProcessSCOR();
		2253	break;
		2254	case egcomm_epdshow:
		2255	flag = EGProcessSHOW();
		2256	break;
		2257	case egcomm_epdspgn:
		2258	flag = EGProcessSPGN();
		2259	break;
		2260	case egcomm_epdstpv:
		2261	flag = EGProcessSTPV();
		2262	break;
		2263	case egcomm_epdtest:
		2264	flag = EGProcessTEST();
		2265	break;
		2266	};
		2267	/* check result */
		2268	if (!flag) {
		2269	sprintf(tbufv, "EG fault: a problem occurred during %s processing\n",
		2270	EPDTokenFetch(0));
		2271	EGPrintTB();
		2272	};
		2273	};
		2274	return flag;
		2275	}
		2276
		2277	/--> EGInit: one time EPD glue initialization /
		2278	nonstatic void EGInit(void) {
		2279	/* this is called by Initialize() in init.c */
		2280	EGPL("EPD Kit revision date: 1996.04.21");
		2281	/* call the EPD one time set up code */
		2282	EPDInit();
		2283	/* initialize the EPD glue command strings vector */
		2284	egcommstrv[egcomm_epdapgn] = "epdapgn";
		2285	egcommstrv[egcomm_epdbfix] = "epdbfix";
		2286	egcommstrv[egcomm_epdcert] = "epdcert";
		2287	egcommstrv[egcomm_epdcics] = "epdcics";
		2288	egcommstrv[egcomm_epdcomm] = "epdcomm";
		2289	egcommstrv[egcomm_epddpgn] = "epddpgn";
		2290	egcommstrv[egcomm_epddsml] = "epddsml";
		2291	egcommstrv[egcomm_epddstr] = "epddstr";
		2292	egcommstrv[egcomm_epddtpv] = "epddtpv";
		2293	egcommstrv[egcomm_epdenum] = "epdenum";
		2294	egcommstrv[egcomm_epdhelp] = "epdhelp";
		2295	egcommstrv[egcomm_epdlink] = "epdlink";
		2296	egcommstrv[egcomm_epdlpgn] = "epdlpgn";
		2297	egcommstrv[egcomm_epdlrec] = "epdlrec";
		2298	egcommstrv[egcomm_epdmore] = "epdmore";
		2299	egcommstrv[egcomm_epdnoop] = "epdnoop";
		2300	egcommstrv[egcomm_epdpfdn] = "epdpfdn";
		2301	egcommstrv[egcomm_epdpfdr] = "epdpfdr";
		2302	egcommstrv[egcomm_epdpfga] = "epdpfga";
		2303	egcommstrv[egcomm_epdpflc] = "epdpflc";
		2304	egcommstrv[egcomm_epdpfop] = "epdpfop";
		2305	egcommstrv[egcomm_epdscor] = "epdscor";
		2306	egcommstrv[egcomm_epdshow] = "epdshow";
		2307	egcommstrv[egcomm_epdspgn] = "epdspgn";
		2308	egcommstrv[egcomm_epdstpv] = "epdstpv";
		2309	egcommstrv[egcomm_epdtest] = "epdtest";
		2310	/* initialize the EPD glue command string descriptions vector */
		2311	eghelpstrv[egcomm_epdapgn] = "Append PGN game to <file>";
		2312	eghelpstrv[egcomm_epdbfix] = "Fix <file1> data for Bookup input <file2>";
		2313	eghelpstrv[egcomm_epdcert] =
		2314	"Display certain score for the current position";
		2315	eghelpstrv[egcomm_epdcics] = "Slave to ICS at <hostname> and <portnumber>";
		2316	eghelpstrv[egcomm_epdcomm] = "Slave to Duplex using <pipefile-basename>";
		2317	eghelpstrv[egcomm_epddpgn] = "Display game using PGN";
		2318	eghelpstrv[egcomm_epddsml] = "Display SAN move list";
		2319	eghelpstrv[egcomm_epddstr] = "Display PGN Seven Tag Roster";
		2320	eghelpstrv[egcomm_epddtpv] = "Display PGN tag pair <tag-name> value";
		2321	eghelpstrv[egcomm_epdenum] = "Enumerate to <depth> from <file1> to <file2>";
		2322	eghelpstrv[egcomm_epdhelp] = "Display EPD glue command descriptions";
		2323	eghelpstrv[egcomm_epdlink] =
		2324	"Slave to Argus at <hostname> and <portnumber>";
		2325	eghelpstrv[egcomm_epdlpgn] = "Load PGN game from <file>";
		2326	eghelpstrv[egcomm_epdlrec] = "Load EPD record from <file> <line-number>";
		2327	eghelpstrv[egcomm_epdmore] = "Display more help for <command>";
		2328	eghelpstrv[egcomm_epdnoop] = "No operation";
		2329	eghelpstrv[egcomm_epdpfdn] = "Normalize EPD data from <file1> to <file2>";
		2330	eghelpstrv[egcomm_epdpfdr] = "Repair EPD data from <file1> to <file2>";
		2331	eghelpstrv[egcomm_epdpfga] = "Analyze EPD data from <file1> to <file2>";
		2332	eghelpstrv[egcomm_epdpflc] = "Locate mating cooks in result <file>";
		2333	eghelpstrv[egcomm_epdpfop] = "Purge EPD <opcode> from <file1> to <file2>";
		2334	eghelpstrv[egcomm_epdscor] = "Score benchmark EPD results from <file>";
		2335	eghelpstrv[egcomm_epdshow] =
		2336	"Show EPD four fields for the current position";
		2337	eghelpstrv[egcomm_epdspgn] = "Save PGN game to <file>";
		2338	eghelpstrv[egcomm_epdstpv] = "Set PGN tag pair <tag-name> to <value>";
		2339	eghelpstrv[egcomm_epdtest] = "EPD glue developer testing";
		2340	/* initialize the EPD glue command parameter counts vector */
		2341	/* set up the default game structure */
		2342	default_gamptr = EPDGameOpen();
		2343	return;
		2344	}
		2345
		2346	/--> EGTerm: one time EPD glue termination /
		2347	nonstatic void EGTerm(void) {
		2348	/* this is called by Option() in option.c */
		2349	/* release the default game structure */
		2350	if (default_gamptr != NULL)
		2351	EPDGameClose(default_gamptr);
		2352	/* call the EPD one time close down code */
		2353	EPDTerm();
		2354	return;
		2355	}
		2356	#endif
		2357	/<<< epdglue.c: EOF /

Subversion Repositories Games.Chess Giants

Games.Chess Giants/engine-crafty/epdglue.c – Rev 154