UCI2WB.c

   1 /************************* UCI2WB by H.G.Muller ****************************/
   2
   3 #define VERSION "1.10"
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #ifdef WIN32
   8 #  include <windows.h>
   9 #  include <io.h>
  10    HANDLE process;
  11    DWORD thread_id;
  12 #else
  13 #  include <pthread.h>
  14 #  include <signal.h>
  15 #  define NO_ERROR 0
  16 #  include <sys/time.h>
  17    int GetTickCount() // with thanks to Tord
  18    { struct timeval t; gettimeofday(&t, NULL); return t.tv_sec*1000 + t.tv_usec/1000; }
  19 #endif
  20 #include <fcntl.h>
  21 #include <string.h>
  22
  23 // Set VARIANTS for in WinBoard variant feature. (With -s option this will always be reset to use "shogi".)
  24 #  define VARIANTS "normal,xiangqi"
  25
  26 #define DPRINT if(debug) printf
  27
  28 #define WHITE 0
  29 #define BLACK 1
  30 #define NONE  2
  31 #define ANALYZE 3
  32
  33 char move[2000][10], checkOptions[8192], iniPos[256], hashOpt[20], pause, pondering, suspended, ponder, post, hasHash, c, sc='c', *suffix, *variants;
  34 int mps, tc, inc, sTime, depth, myTime, hisTime, stm, computer = NONE, memory, oldMem=0, cores, moveNr, lastDepth, lastScore, startTime, debug;
  35 int statDepth, statScore, statNodes, statTime, currNr, size, collect, nr, sm, inex, on[500];
  36 char currMove[20], moveMap[500][10], /* for analyze mode */ canPonder[20], threadOpt[20];
  37 char board[100];  // XQ board for UCCI
  38 char *nameWord = "name ", *valueWord = "value ", *wTime = "w", *bTime = "b", *wInc = "winc", *bInc = "binc", newGame; // keywords that differ in UCCI
  39 int unit = 1, drawOffer;
  40
  41 FILE *toE, *fromE, *fromF;
  42 int pid;
  43
  44 #ifdef WIN32
  45 WinPipe(HANDLE *hRd, HANDLE *hWr)
  46 {
  47   SECURITY_ATTRIBUTES saAttr;
  48
  49   /* Set the bInheritHandle flag so pipe handles are inherited. */
  50   saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
  51   saAttr.bInheritHandle = TRUE;
  52   saAttr.lpSecurityDescriptor = NULL;
  53
  54   /* Create a pipe */
  55   return CreatePipe(hRd, hWr, &saAttr, 0);
  56 }
  57 #endif
  58
  59 #define INIT 0
  60 #define WAKEUP 1
  61 #define PAUSE 2
  62
  63 void
  64 Sync (int action)
  65 {
  66 #ifdef WIN32
  67         static HANDLE hWr, hRd; DWORD d; char c;
  68         switch(action) {
  69             case INIT:   WinPipe(&hRd, &hWr); break;
  70             case WAKEUP: WriteFile(hWr, "\n", 1, &d, NULL); break;
  71             case PAUSE:  ReadFile(hRd, &c, 1, &d, NULL);
  72         }
  73 #else
  74         static int syncPipe[2]; char c;
  75         switch(action) {
  76             case INIT:   pipe(syncPipe); break;
  77             case WAKEUP: write(syncPipe[1], "\n", 1); break;
  78             case PAUSE:  read(syncPipe[0], &c, 1);
  79         }
  80 #endif
  81 }
  82
  83 void
  84 FromFEN(char *fen)
  85 {       int i=0;
  86         while(*fen) {
  87             char c = *fen++;
  88             if(c >= 'A') board[i++] = c; else
  89             if(c == '/') i++; else
  90             if(c == ' ') break; else
  91             while(c-- > '0' && i < 99) board[i++] = 0;
  92             if(i >= 99) break;
  93         }
  94 }
  95
  96 char *
  97 ToFEN(int stm)
  98 {
  99         int i, n=0; static char fen[200]; char *p = fen;
 100         for(i=0; i<99; i++) {
 101             char c = board[i];
 102             if(c >= 'A')  { if(n) *p++ = '0' + n; n = 0;  *p++ = c; } else n ++;
 103             if(i%10 == 8) { if(n) *p++ = '0' + n; n = -1; *p++ = '/'; }
 104         }
 105         sprintf(p-1, " %c - - 0 1", stm);
 106         return fen;
 107 }
 108
 109 int
 110 Sqr(char *m, int j)
 111 {
 112         int n = m[j] - 'a' + 10*('9' - m[j+1]);
 113         if(n < 0) n = 0; else if(n > 99) n = 99; return n;
 114 }
 115
 116 int
 117 Play(int nr)
 118 {
 119         int i, last = -1;
 120         FromFEN(iniPos + 4); // in XQ iniPos always has just "fen " prefix
 121         for(i=0; i<nr; i++) {
 122             int from=Sqr(move[i], 0), to=Sqr(move[i], 2);
 123             if(board[to]) last = i;
 124             board[to] = board[from]; board[from] = 0;
 125         }
 126         return last;
 127 }
 128
 129 void
 130 StartSearch(char *ponder)
 131 {       // send the 'go' command to engine. Suffix by ponder.
 132         char *draw = "draw ";
 133         int x = (ponder[0] != 0);                   // during ponder stm is the opponent
 134         int black = (stm == BLACK ^ x ^ sc == 's'); // set if our color is what the engine calls black
 135         int nr = moveNr + x;                        // we ponder for one move ahead!
 136         if(sc == 'x') black = 1; else draw = "";    // in UCCI 'black' refers to us and 'white' to opponent
 137         drawOffer = 0;
 138         fprintf(toE, "\ngo%s %s%stime %d %stime %d", ponder, draw, bTime, black ? myTime : hisTime, wTime, !black ? myTime : hisTime);
 139         DPRINT(    "\n# go%s %s%stime %d %stime %d", ponder, draw, bTime, black ? myTime : hisTime, wTime, !black ? myTime : hisTime);
 140         if(sTime > 0) { fprintf(toE, " movetime %d", sTime); DPRINT(" movetime %d", sTime); } else
 141         if(mps) { fprintf(toE, " movestogo %d", mps*(nr/(2*mps)+1)-nr/2); DPRINT(" movestogo %d", mps*(nr/(2*mps)+1)-nr/2); }
 142         if(inc && !suffix) { fprintf(toE, " %s %d %s %d", wInc, inc, bInc, inc); DPRINT(" %s %d %s %d", wInc, inc, bInc, inc); }
 143         if(depth > 0) { fprintf(toE, " depth %d", depth); DPRINT(" depth %d", depth); }
 144         if(suffix) { fprintf(toE, suffix, inc); DPRINT(suffix, inc); }
 145         fprintf(toE, "\n"); DPRINT("\n");
 146 }
 147
 148 void
 149 StopPonder(int pondering)
 150 {
 151         if(!pondering) return;
 152         pause = 1;
 153         fprintf(toE, "stop\n"); fflush(toE); DPRINT("# stop\n"); // note: 'pondering' remains set until engine acknowledges 'stop' with 'bestmove'
 154         Sync(PAUSE); // wait for engine to acknowledge 'stop' with 'bestmove'.
 155 }
 156
 157 void
 158 LoadPos(int moveNr)
 159 {
 160         int j, lastCapt = 0; char *pos = iniPos, buf[200], stm;
 161         if(sc == 'x') { // UCCI: send only reversible moves
 162             lastCapt = Play(moveNr); // find last capture (returns -1 if none!)
 163             Play(++lastCapt);        // reconstruct board after last capture
 164             stm = (!strstr(iniPos+4, " b ") ^ lastCapt & 1 ? 'w' :  'b');
 165             sprintf(buf, "position fen %s", ToFEN(stm)); pos = buf; // send it as FEN (with "position" in UCCI!)
 166         }
 167         fprintf(toE, "%s moves", pos);
 168         DPRINT(    "# %s moves", pos);
 169         for(j=lastCapt; j<moveNr; j++) { fprintf(toE, " %s", move[j]); DPRINT(" %s", move[j]); }
 170 }
 171
 172 void
 173 StartPonder()
 174 {
 175         if(!move[moveNr][0]) return; // no ponder move
 176         LoadPos(moveNr+1);
 177         pondering = 1; lastDepth = 1;
 178         StartSearch(" ponder");
 179 }
 180
 181 char *Convert(char *pv)
 182 {   // convert Shogi coordinates to WB
 183     char *p, *q, c;
 184     static char buf[10000];
 185     if(sc != 's') return pv;
 186     p = pv; q = buf;
 187     while(c = *p++) {
 188         if(c >= '0' && c <= '9' || c >= 'a' && c <= 'z') *q++ = 'a'+'0'+size - c; else *q++ = c;
 189     }
 190     *q++ = 0;
 191     return buf;
 192 }
 193
 194 void
 195 Move4GUI(char *m)
 196 {
 197     if(sc == 's') {
 198       // convert USI move to WB format
 199       m[2] = 'a'+'0'+size - m[2];
 200       m[3] = 'a'+'0'+size - m[3];
 201       if(m[1] == '*') { // drop
 202         m[1] = '@';
 203       } else {
 204         m[0] = 'a'+'0'+size - m[0];
 205         m[1] = 'a'+'0'+size - m[1];
 206         if((stm == WHITE ? (m[1]>'0'+size-size/3 || m[3]>'0'+size-size/3)
 207                                 : (m[1] <= '0'+size/3 || m[3] <= '0'+size/3)) && m[4] != '+')
 208              m[4] = '=', m[5] = 0;
 209       }
 210     }
 211 }
 212
 213 int
 214 GetChar()
 215 {
 216     int c;
 217     if(fromF) {
 218         if((c = fgetc(fromF)) != EOF) return c;
 219         fclose(fromF); fromF = 0; printf("# end fake\n");
 220     }
 221     return fgetc(fromE);
 222 }
 223
 224 void *
 225 Engine2GUI()
 226 {
 227     char line[1024], command[256];
 228
 229     if(fromF = fopen("DefectiveEngineOptions.ini", "r")) printf("# fake engine input\n");
 230     while(1) {
 231         int i=0, x; char *p, dummy;
 232
 233         fflush(stdout); fflush(toE);
 234         while((line[i] = x = GetChar()) != EOF && line[i] != '\n') i++;
 235         line[++i] = 0;
 236         if(x == EOF) exit(0);
 237         DPRINT("# engine said: %s", line), fflush(stdout);
 238         if(sscanf(line, "%s", command) != 1) continue;
 239         if(!strcmp(command, "bestmove")) {
 240             if(pause) { pondering = pause = 0; Sync(WAKEUP); continue; } // bestmove was reply to ponder miss or analysis result; ignore.
 241             // move was a move to be played
 242             if((p = strstr(line+8, " draw")) && p != line+8)   { *p = '\n'; printf("offer draw\n"); computer = NONE; } // UCCI
 243             if(strstr(line+9, "resign")) { printf("resign\n"); computer = NONE; }
 244             if(strstr(line+9, "(none)") || strstr(line+9, "null") ||
 245                strstr(line+9, "0000")) { printf("%s\n", lastScore < -99999 ? "resign" : "1/2-1/2 {stalemate}"); computer = NONE; }
 246             sscanf(line, "bestmove %s", move[moveNr++]);
 247             myTime -= (GetTickCount() - startTime)*1.02 + inc; // update own clock, so we can give correct wtime, btime with ponder
 248             if(mps && ((moveNr+1)/2) % mps == 0) myTime += tc; if(sTime) myTime = sTime; // new session or move starts
 249
 250             stm = WHITE+BLACK - stm;
 251             // first start a new ponder search, if pondering is on and we have a move to ponder on
 252             if(p = strstr(line+9, "ponder")) {
 253               sscanf(p+7, "%s", move[moveNr]);
 254               if(computer != NONE && ponder) {
 255                 DPRINT("# ponder on %s\n", move[moveNr]);
 256                 StartPonder();
 257               }
 258               p[-1] = '\n'; *p = 0; // strip off ponder move
 259             } else move[moveNr][0] = 0;
 260             Move4GUI(line+9);
 261             printf("move %s\n", line+9); // send move to GUI
 262             if(lastScore == 100001 && iniPos[0] != 'f') { printf("%s {mate}\n", stm == BLACK ? "1-0" : "0-1"); computer = NONE; }
 263         }
 264         else if(!strcmp(command, "info")) {
 265             int d=0, s=0, t=0, n=0;
 266             char *pv;
 267             if(sscanf(line+5, "string times @ %c", &dummy) == 1) { printf("# %s", line+12); continue; }
 268             if(collect && (pv = strstr(line+5, "currmove "))) {
 269                 if(p = strstr(line+5, "currmovenumber ")) {
 270                     n = atoi(p+15);
 271                     if(collect == 1 && n != 1) continue; // wait for move 1
 272                     if(collect + (n == 1) > 2) { // done collecting
 273                         if(inex && collect == 2) printf("%d 0 0 0 OK to exclude\n", lastDepth);
 274                         collect = 3; continue;
 275                     }
 276                     collect = 2; on[nr=n] = 1; sscanf(pv+9, "%s", moveMap[n]); continue; // store move
 277                 }
 278             }
 279             if(!post) continue;
 280             if(sscanf(line+5, "string %c", &dummy) == 1) printf("%d 0 0 0 %s", lastDepth, line+12); else {
 281                 if(p = strstr(line+4, " depth "))      sscanf(p+7, "%d", &d), statDepth = d;
 282                 if(p = strstr(line+4, " score cp "))   sscanf(p+10, "%d", &s), statScore = s; else
 283                 if(p = strstr(line+4, " score mate ")) sscanf(p+12, "%d", &s), s += s>0 ? 100000 : -100000, statScore = s; else
 284                 if(p = strstr(line+4, " score "))      sscanf(p+7, "%d", &s), statScore = s;
 285                 if(p = strstr(line+4, " nodes "))      sscanf(p+7, "%d", &n), statNodes = n;
 286                 if(p = strstr(line+4, " time "))       sscanf(p+6, "%d", &t), t /= 10, statTime = t;
 287                 if(p = strstr(line+4, " currmove "))   sscanf(p+10,"%s", currMove);
 288                 if(p = strstr(line+4, " currmovenumber ")) sscanf(p+16,"%d", &currNr);
 289                 if(pv = strstr(line+4, " pv ")) // convert PV info to WB thinking output
 290                     printf("%3d  %6d %6d %10d %s", lastDepth=d, lastScore=s, t, n, Convert(pv+4));
 291             }
 292         }
 293         else if(!strcmp(command, "option")) { // USI option: extract data fields
 294             char name[80], type[80], buf[1024], val[256], *q;
 295             int min=0, max=1e9;
 296             if(p = strstr(line+6, " type ")) sscanf(p+1, "type %s", type), *p = '\n';
 297             if(p = strstr(line+6, " min "))  sscanf(p+1, "min %d", &min), *p = '\n';
 298             if(p = strstr(line+6, " max "))  sscanf(p+1, "max %d", &max), *p = '\n';
 299             if(p = strstr(line+6, " default "))  sscanf(p+1, "default %[^\n]*", val), *p = '\n';
 300             if(!(p = strstr(line+6, " name "))) p = line+1; sscanf(p+6, "%[^\n]", name); // 'name' is omitted in UCCI
 301             if(!strcmp(name, "Threads")) { strcpy(threadOpt, name); continue; }
 302             if(!strcmp(name, "Ponder") || !strcmp(name, "USI_Ponder")) { strcpy(canPonder, name); continue; }
 303             if(!strcmp(name, "Hash") || !strcmp(name, "USI_Hash") || !strcmp(name, "hashsize")) {
 304                 memory = oldMem = atoi(val); hasHash = 1;
 305                 strcpy(hashOpt, name);
 306                 continue;
 307             }
 308             if(!strcmp(name, "newgame") && !strcmp(type, "button")) { newGame++; continue; }
 309             if(!strcmp(name, "usemillisec")) { unit = (!strcmp(val, "false") ? 2 : 1); continue; }
 310             // pass on engine-defined option as WB option feature
 311             if(!strcmp(type, "filename")) type[4] = 0;
 312             sprintf(buf, "feature option=\"%s -%s", name, type); q = buf + strlen(buf);
 313             if(     !strcmp(type, "file")
 314                  || !strcmp(type, "string")) sprintf(q, " %s\"\n", val);
 315             else if(!strcmp(type, "spin"))   sprintf(q, " %d %d %d\"\n", atoi(val), min, max);
 316             else if(!strcmp(type, "check"))  sprintf(q, " %d\"\n", strcmp(val, "true") ? 0 : 1), strcat(checkOptions, name);
 317             else if(!strcmp(type, "button")) sprintf(q, "\"\n");
 318             else if(!strcmp(type, "combo")) {
 319                 if(p = strstr(line+6, " default "))  sscanf(p+1, "default %s", type); // current setting
 320                 min = 0; p = line+6;
 321                 while(p = strstr(p, " var ")) {
 322                     sscanf(p += 5, "%s", val); // next choice
 323                     sprintf(buf + strlen(buf), "%s%s%s", min++ ? " /// " : " ", strcmp(type, val) ? "" : "*", val);
 324                 }
 325                 strcat(q, "\"\n");
 326             }
 327             else buf[0] = 0; // ignore unrecognized option types
 328             if(buf[0]) printf("%s", buf);
 329         }
 330         else if(!strcmp(command, "id")) {
 331             char name[256];
 332             if(sscanf(line, "id name %[^\n]", name) == 1) printf("feature myname=\"%s (U%cI2WB)\"\n", name, sc-32);
 333         }
 334         else if(!strcmp(command, "readyok")) { pause = 0; Sync(WAKEUP); } // resume processing of GUI commands
 335         else if(sc == 'x'&& !strcmp(command, "ucciok") || sscanf(command, "u%ciok", &c)==1 && c==sc) {
 336             printf("feature smp=1 memory=%d done=1\n", hasHash);
 337             if(unit == 2) unit = 1, fprintf(toE, "setoption usemillisec true\n");
 338             Sync(WAKEUP); // done with options
 339         }
 340     }
 341 }
 342
 343 void
 344 Move4Engine(char *m)
 345 {
 346     if(sc == 's') {
 347       // convert input move to USI format
 348       if(m[1] == '@') { // drop
 349         m[1] = '*';
 350       } else {
 351         m[0] = 'a'+'0'+size - m[0];
 352         m[1] = 'a'+'0'+size - m[1];
 353       }
 354       m[2] = 'a'+'0'+size - m[2];
 355       m[3] = 'a'+'0'+size - m[3];
 356       if(m[4] == '=') m[4] = 0; // no '=' in USI format!
 357       else if(m[4]) m[4] = '+'; // cater to WB 4.4 bug :-(
 358     }
 359 }
 360
 361 void
 362 GUI2Engine()
 363 {
 364     char line[256], command[256], *p, *q, *r;
 365
 366     while(1) {
 367         int i, x;
 368
 369         if((computer == stm || computer == ANALYZE) && !suspended) {
 370             DPRINT("# start search\n");
 371             LoadPos(moveNr); // load position
 372             // and set engine thinking (note USI swaps colors!)
 373             startTime = GetTickCount();
 374             if(computer == ANALYZE) {
 375                 fprintf(toE, "\ngo infinite"); DPRINT("\n# go infinite");
 376                 if(sm & 1) { // some moves are disabled
 377                     fprintf(toE, " searchmoves"); DPRINT(" searchmoves");
 378                     for(i=1; i<nr; i++) if(on[i]) { fprintf(toE, " %s", moveMap[i]); DPRINT(" %s", moveMap[i]); }
 379                 }
 380                 fprintf(toE, "\n"); DPRINT("\n");
 381             // code for searchmoves goes here
 382             } else StartSearch("");
 383         }
 384       nomove:
 385         fflush(toE); fflush(stdout);
 386         i = 0; while((x = getchar()) != EOF && (line[i] = x) != '\n') i++;
 387         line[++i] = 0; if(x == EOF) { printf("# EOF\n"); exit(-1); }
 388         sscanf(line, "%s", command);
 389         if(!strcmp(command, "new")) {
 390             computer = BLACK; moveNr = 0; depth = -1; move[0][0] = 0;
 391             stm = WHITE; strcpy(iniPos, "position startpos");
 392             if(memory != oldMem && hasHash) fprintf(toE, "setoption name %s %s%d\n", hashOpt, valueWord, memory);
 393             oldMem = memory;
 394             // we can set other options here
 395             if(sc == 'x') { if(newGame) fprintf(toE, "setoption newgame\n"); } else // optional in UCCI
 396             fprintf(toE, "u%cinewgame\n", sc); fflush(toE);
 397             pause = 1; // wait for option settings to take effect
 398             fprintf(toE, "isready\n");
 399             Sync(PAUSE); // wait for readyok
 400         }
 401         else if(!strcmp(command, "usermove")) {
 402             sscanf(line, "usermove %s", command); // strips off linefeed
 403             Move4Engine(command);
 404             stm = WHITE+BLACK - stm; collect = (computer == ANALYZE); sm = 0;
 405             // when pondering we either continue the ponder search as normal search, or abort it
 406             if(pondering || computer == ANALYZE) {
 407                 if(pondering && !strcmp(command, move[moveNr])) { // ponder hit
 408                     pondering = 0; moveNr++; startTime = GetTickCount(); // clock starts running now
 409                     fprintf(toE, "ponderhit\n"); DPRINT("# ponderhit\n");
 410                     goto nomove;
 411                 }
 412                 StopPonder(1);
 413             }
 414             strcpy(move[moveNr++], command); // possibly overwrites ponder move
 415         }
 416         else if(!strcmp(command, "level")) {
 417             int sec = 0;
 418             sscanf(line, "level %d %d:%d %d", &mps, &tc, &sec, &inc) == 4 ||
 419             sscanf(line, "level %d %d %d", &mps, &tc, &inc);
 420             tc = (60*tc + sec)*1000; inc *= 1000; sTime = 0; tc /= unit; inc /= unit;
 421         }
 422         else if(!strcmp(command, "option")) {
 423             char name[80], *p;
 424             if(sscanf(line+7, "UCI2WB debug output=%d", &debug) == 1) ; else
 425             if(p = strchr(line, '=')) {
 426                 *p++ = 0;
 427                 if(strstr(checkOptions, line+7)) sprintf(p, "%s\n", atoi(p) ? "true" : "false");
 428                 fprintf(toE, "setoption name %s value %s", line+7, p); DPRINT("# setoption %s%s %s%s", nameWord, line+7, valueWord, p);
 429             } else { fprintf(toE, "setoption %s%s\n", nameWord, line+7); DPRINT("# setoption %s%s\n", nameWord, line+7); }
 430         }
 431         else if(!strcmp(command, "protover")) {
 432             if(!variants) variants = sc=='s' ? "shogi,5x5+5_shogi" : VARIANTS;
 433             printf("feature variants=\"%s\" setboard=1 usermove=1 debug=1 ping=1 reuse=0 exclude=1 pause=1 done=0\n", variants);
 434             printf("feature option=\"UCI2WB debug output -check %d\"\n", debug);
 435             fprintf(toE, sc == 'x' ? "ucci\n" : "u%ci\n", sc); fflush(toE); // prompt UCI engine for options
 436             Sync(PAUSE); // wait for uciok
 437         }
 438         else if(!strcmp(command, "setboard")) {
 439                 stm = (strstr(line+9, " b ") ? BLACK : WHITE);
 440                 if(p = strchr(line+9, '[')) { char c;
 441                     *p++ = 0; q = strchr(p, ']'); *q = 0; r = q + 4;
 442                     if(sc == 's') q[2] = 'w' + 'b' - q[2], strcpy(r=q+3, " 1\n"); // Shogi: reverse color
 443                     else r = strchr(strchr(q+4, ' ') + 1, ' '); // skip to second space (after e.p. square)
 444                     *r = 0; sprintf(command, "%s%s %s %s", line+9, q+1, p, r+1);
 445                 } else strcpy(command, line+9);
 446                 sprintf(iniPos, "%s%sfen %s", iniPos[0]=='p' ? "position " : "", sc=='s' ? "s" : "", command);
 447                 iniPos[strlen(iniPos)-1] = sm = 0; collect = (computer == ANALYZE);
 448         }
 449         else if(!strcmp(command, "variant")) {
 450                 if(!strcmp(line+8, "shogi\n")) size = 9, strcpy(iniPos, "position startpos");
 451                 if(!strcmp(line+8, "5x5+5_shogi\n")) size = 5, strcpy(iniPos, "position startpos");
 452                 if(!strcmp(line+8, "xiangqi\n")) strcpy(iniPos, "fen rnbakabnr/9/1c5c1/p1p1p1p1p/9/9/P1P1P1P1P/1C5C1/9/RNBAKABNR r");
 453         }
 454         else if(!strcmp(command, "undo") && (i=1) || !strcmp(command, "remove") && (i=2)) {
 455             if(pondering || computer == ANALYZE) StopPonder(1);
 456             moveNr = moveNr > i ? moveNr - i : 0; collect = (computer == ANALYZE); sm = 0;
 457         }
 458         else if(!strcmp(command, ".")) {
 459             printf("stat01: %d %d %d %d 100 %s\n", statTime, statNodes, statDepth, 100-currNr, currMove);
 460             goto nomove;
 461         }
 462         else if(!strcmp(command+2, "clude") && collect > 2) { // include or exclude
 463             int all = !strcmp(line+8, "all"), in = command[1] == 'n';
 464             inex = 1; line[strlen(line)-1] = sm = 0; // strip LF and clear sm flag
 465             for(i=1; i<nr; i++) { if(!strcmp(line+8, moveMap[i]) || all) on[i] = in; sm |= on[i]+1; } // sm: 2 = enabled, 1 = disabled
 466             if(!(sm & 2)) goto nomove; // no moves enabled; continue current search
 467             if(computer == ANALYZE) StopPonder(1); // abort old analysis
 468         }
 469         else if(!strcmp(command, "pause")) {
 470             if(computer == stm) myTime -= GetTickCount() - startTime;
 471             suspended = 1 + pondering; // remember if we were pondering, and stop search ignoring bestmove
 472             StopPonder(pondering || computer == stm);
 473         }
 474         else if(!strcmp(command, "resume")) {
 475             if(suspended == 2) StartPonder(); // restart interrupted ponder search
 476             suspended = 0; // causes thinking to start in normal way if on move or analyzing
 477         }
 478         else if(!strcmp(command, "xboard")) ;
 479         else if(!strcmp(command, "analyze"))computer = ANALYZE, collect = 1, sm = 0;
 480         else if(!strcmp(command, "exit"))   computer = NONE, StopPonder(1);
 481         else if(!strcmp(command, "force"))  computer = NONE, StopPonder(pondering);
 482         else if(!strcmp(command, "go"))     computer = stm;
 483         else if(!strcmp(command, "time"))   sscanf(line+4, "%d", &myTime),  myTime  = (10*myTime)/unit;
 484         else if(!strcmp(command, "otim"))   sscanf(line+4, "%d", &hisTime), hisTime = (10*hisTime)/unit;
 485         else if(!strcmp(command, "post"))   post = 1;
 486         else if(!strcmp(command, "nopost")) post = 0;
 487         else if(!strcmp(command, "easy") && !!*canPonder) ponder = 0, StopPonder(pondering), fprintf(toE, "setoption %s%s %sfalse\n", nameWord, canPonder, valueWord);
 488         else if(!strcmp(command, "hard") && !!*canPonder) ponder = 1, fprintf(toE, "setoption %s%s %strue\n", nameWord, canPonder, valueWord), StartPonder();
 489         else if(!strcmp(command, "ping"))   pause = 1, fprintf(toE, "isready\n"), fflush(toE), Sync(PAUSE), printf("pong %s", line+5);
 490         else if(!strcmp(command, "memory")) sscanf(line, "memory %d", &memory);
 491         else if(!strcmp(command, "cores")&& !!*threadOpt) sscanf(line, "cores %d", &cores), fprintf(toE, "setoption %s%s %s%d\n", nameWord, threadOpt, valueWord, cores);
 492         else if(!strcmp(command, "sd"))     sscanf(line, "sd %d", &depth);
 493         else if(!strcmp(command, "st"))     sscanf(line, "st %d", &sTime), sTime = 1000*sTime - 30, inc = 0, sTime /= unit;
 494         else if(!strcmp(command, "offer"))  drawOffer = 1;
 495         else if(!strcmp(command, "quit"))   fprintf(toE, "quit\n"), fflush(toE), exit(0);
 496     }
 497 }
 498
 499 int
 500 StartEngine(char *cmdLine, char *dir)
 501 {
 502 #ifdef WIN32
 503   HANDLE hChildStdinRd, hChildStdinWr,
 504     hChildStdoutRd, hChildStdoutWr;
 505   BOOL fSuccess;
 506   PROCESS_INFORMATION piProcInfo;
 507   STARTUPINFO siStartInfo;
 508   DWORD err;
 509
 510   /* Create a pipe for the child's STDOUT. */
 511   if (! WinPipe(&hChildStdoutRd, &hChildStdoutWr)) return GetLastError();
 512
 513   /* Create a pipe for the child's STDIN. */
 514   if (! WinPipe(&hChildStdinRd, &hChildStdinWr)) return GetLastError();
 515
 516   SetCurrentDirectory(dir); // go to engine directory
 517
 518   /* Now create the child process. */
 519   siStartInfo.cb = sizeof(STARTUPINFO);
 520   siStartInfo.lpReserved = NULL;
 521   siStartInfo.lpDesktop = NULL;
 522   siStartInfo.lpTitle = NULL;
 523   siStartInfo.dwFlags = STARTF_USESTDHANDLES;
 524   siStartInfo.cbReserved2 = 0;
 525   siStartInfo.lpReserved2 = NULL;
 526   siStartInfo.hStdInput = hChildStdinRd;
 527   siStartInfo.hStdOutput = hChildStdoutWr;
 528   siStartInfo.hStdError = hChildStdoutWr;
 529
 530   fSuccess = CreateProcess(NULL,
 531                            cmdLine,        /* command line */
 532                            NULL,           /* process security attributes */
 533                            NULL,           /* primary thread security attrs */
 534                            TRUE,           /* handles are inherited */
 535                            DETACHED_PROCESS|CREATE_NEW_PROCESS_GROUP,
 536                            NULL,           /* use parent's environment */
 537                            NULL,
 538                            &siStartInfo, /* STARTUPINFO pointer */
 539                            &piProcInfo); /* receives PROCESS_INFORMATION */
 540
 541   if (! fSuccess) return GetLastError();
 542
 543 //  if (0) { // in the future we could trigger this by an argument
 544 //    SetPriorityClass(piProcInfo.hProcess, GetWin32Priority(appData.niceEngines));
 545 //  }
 546
 547   /* Close the handles we don't need in the parent */
 548   CloseHandle(piProcInfo.hThread);
 549   CloseHandle(hChildStdinRd);
 550   CloseHandle(hChildStdoutWr);
 551
 552   process = piProcInfo.hProcess;
 553   pid = piProcInfo.dwProcessId;
 554   fromE = (FILE*) _fdopen( _open_osfhandle((long)hChildStdoutRd, _O_TEXT|_O_RDONLY), "r");
 555   toE   = (FILE*) _fdopen( _open_osfhandle((long)hChildStdinWr, _O_WRONLY), "w");
 556 #else
 557     char *argv[10], *p, buf[200];
 558     int i, toEngine[2], fromEngine[2];
 559
 560     if (dir && dir[0] && chdir(dir)) { perror(dir); exit(1); }
 561     pipe(toEngine); pipe(fromEngine); // create two pipes
 562
 563     if ((pid = fork()) == 0) { // Child
 564         dup2(toEngine[0], 0);   close(toEngine[0]);   close(toEngine[1]);   // stdin from toE pipe
 565         dup2(fromEngine[1], 1); close(fromEngine[0]); close(fromEngine[1]); // stdout into fromE pipe
 566         dup2(1, fileno(stderr)); // stderr into frome pipe
 567
 568         strcpy(buf, cmdLine); p = buf;
 569         for (i=0;;) { argv[i++] = p; p = strchr(p, ' '); if (p == NULL) break; *p++ = 0; }
 570         argv[i] = NULL;
 571         execvp(argv[0], argv); // startup engine
 572
 573         perror(argv[0]); exit(1); // could not start engine; quit.
 574     }
 575     signal(SIGPIPE, SIG_IGN);
 576     close(toEngine[0]); close(fromEngine[1]); // close engine ends of pipes in adapter
 577
 578     fromE = (FILE*) fdopen(fromEngine[0], "r"); // make into high-level I/O
 579     toE   = (FILE*) fdopen(toEngine[1], "w");
 580 #endif
 581   return NO_ERROR;
 582 }
 583
 584 main(int argc, char **argv)
 585 {
 586         char *dir = NULL, *p, *q; int e;
 587
 588         if(argc == 2 && !strcmp(argv[1], "-v")) { printf("UCI2WB " VERSION " by H.G.Muller\n"); exit(0); }
 589         if(argc > 1 && !strcmp(argv[1], "debug")) { debug = 1; argc--; argv++; }
 590         if(argc > 1 && !strcmp(argv[1], "-var")) { variants = argv[2]; argc-=2; argv+=2; }
 591         if(argc > 1 && argv[1][0] == '-') { sc = argv[1][1]; argc--; argv++; }
 592         if(argc < 2) { printf("usage is: U%cI2WB [debug] [-s] <engine.exe> [<engine directory>]\n", sc-32); exit(-1); }
 593         if(argc > 2) dir = argv[2];
 594         if(argc > 3) suffix = argv[3];
 595
 596         if(sc == 'x') nameWord = valueWord = bTime = "", wTime = "opp", bInc = "increment", wInc = "oppincrement", unit = 1000; // switch to UCCI keywords
 597
 598         // spawn engine proc
 599         if(StartEngine(argv[1], dir) != NO_ERROR) { perror(argv[1]), exit(-1); }
 600
 601         Sync(INIT);
 602
 603         // create separate thread to handle engine->GUI traffic
 604 #ifdef WIN32
 605         CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE) Engine2GUI, (LPVOID) NULL, 0, &thread_id);
 606 #else
 607         { pthread_t t; signal(SIGINT, SIG_IGN); pthread_create(&t, NULL, Engine2GUI, NULL); }
 608 #endif
 609
 610         // handle GUI->engine traffic in original thread
 611         GUI2Engine();
 612 }