1 /*
2  * gamelist.c -- Functions to manage a gamelist
3  *
4  * Copyright 1995, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Free Software Foundation, Inc.
5  *
6  * Enhancements Copyright 2005 Alessandro Scotti
7  *
8  * ------------------------------------------------------------------------
9  *
10  * GNU XBoard is free software: you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation, either version 3 of the License, or (at
13  * your option) any later version.
14  *
15  * GNU XBoard is distributed in the hope that it will be useful, but
16  * WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  * General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program. If not, see http://www.gnu.org/licenses/.
22  *
23  *------------------------------------------------------------------------
24  ** See the file ChangeLog for a revision history.  */
25 
26 #include "config.h"
27 
28 #include <stdio.h>
29 #include <errno.h>
30 #if STDC_HEADERS
31 # include <stdlib.h>
32 # include <string.h>
33 #else /* not STDC_HEADERS */
34 # if HAVE_STRING_H
35 #  include <string.h>
36 # else /* not HAVE_STRING_H */
37 #  include <strings.h>
38 # endif /* not HAVE_STRING_H */
39 #endif /* not STDC_HEADERS */
40 
41 #include "common.h"
42 #include "frontend.h"
43 #include "backend.h"
44 #include "parser.h"
45 #include "moves.h"
46 #include "gettext.h"
47 
48 #ifdef ENABLE_NLS
49 # define  _(s) gettext (s)
50 # define N_(s) gettext_noop (s)
51 #else
52 # define  _(s) (s)
53 # define N_(s)  s
54 #endif
55 
56 
57 /* Variables
58  */
59 List gameList;
60 extern Board initialPosition;
61 extern int quickFlag;
62 extern int movePtr;
63 
64 /* Local function prototypes
65  */
66 static void GameListDeleteGame P((ListGame *));
67 static ListGame *GameListCreate P((void));
68 static void GameListFree P((List *));
69 static int GameListNewGame P((ListGame **));
70 
71 /* [AS] Wildcard pattern matching */
72 Boolean
HasPattern(const char * text,const char * pattern)73 HasPattern (const char * text, const char * pattern)
74 {
75     while( *pattern != '\0' ) {
76         if( *pattern == '*' ) {
77             while( *pattern == '*' ) {
78                 pattern++;
79             }
80 
81             if( *pattern == '\0' ) {
82                 return TRUE;
83             }
84 
85             while( *text != '\0' ) {
86                 if( HasPattern( text, pattern ) ) {
87                     return TRUE;
88                 }
89                 text++;
90             }
91         }
92         else if( (*pattern == *text) || ((*pattern == '?') && (*text != '\0')) ) {
93             pattern++;
94             text++;
95             continue;
96         }
97 
98         return FALSE;
99     }
100 
101     return TRUE;
102 }
103 
104 Boolean
SearchPattern(const char * text,const char * pattern)105 SearchPattern (const char * text, const char * pattern)
106 {
107     Boolean result = TRUE;
108 
109     if( pattern != NULL && *pattern != '\0' ) {
110         if( *pattern == '*' ) {
111             result = HasPattern( text, pattern );
112         }
113         else {
114             result = FALSE;
115 
116             while( *text != '\0' ) {
117                 if( HasPattern( text, pattern ) ) {
118                     result = TRUE;
119                     break;
120                 }
121                 text++;
122             }
123         }
124     }
125 
126     return result;
127 }
128 
129 /* Delete a ListGame; implies removint it from a list.
130  */
131 static void
GameListDeleteGame(ListGame * listGame)132 GameListDeleteGame (ListGame *listGame)
133 {
134     if (listGame) {
135 	if (listGame->gameInfo.event) free(listGame->gameInfo.event);
136 	if (listGame->gameInfo.site) free(listGame->gameInfo.site);
137 	if (listGame->gameInfo.date) free(listGame->gameInfo.date);
138 	if (listGame->gameInfo.round) free(listGame->gameInfo.round);
139 	if (listGame->gameInfo.white) free(listGame->gameInfo.white);
140 	if (listGame->gameInfo.black) free(listGame->gameInfo.black);
141 	if (listGame->gameInfo.fen) free(listGame->gameInfo.fen);
142 	if (listGame->gameInfo.resultDetails) free(listGame->gameInfo.resultDetails);
143 	if (listGame->gameInfo.timeControl) free(listGame->gameInfo.timeControl);
144 	if (listGame->gameInfo.extraTags) free(listGame->gameInfo.extraTags);
145         if (listGame->gameInfo.outOfBook) free(listGame->gameInfo.outOfBook);
146 	ListNodeFree((ListNode *) listGame);
147     }
148 }
149 
150 
151 /* Free the previous list of games.
152  */
153 static void
GameListFree(List * gameList)154 GameListFree (List *gameList)
155 {
156   while (!ListEmpty(gameList))
157     {
158 	GameListDeleteGame((ListGame *) gameList->head);
159     }
160 }
161 
162 
163 
164 /* Initialize a new GameInfo structure.
165  */
166 void
GameListInitGameInfo(GameInfo * gameInfo)167 GameListInitGameInfo (GameInfo *gameInfo)
168 {
169     gameInfo->event = NULL;
170     gameInfo->site = NULL;
171     gameInfo->date = NULL;
172     gameInfo->round = NULL;
173     gameInfo->white = NULL;
174     gameInfo->black = NULL;
175     gameInfo->result = GameUnfinished;
176     gameInfo->fen = NULL;
177     gameInfo->resultDetails = NULL;
178     gameInfo->timeControl = NULL;
179     gameInfo->extraTags = NULL;
180     gameInfo->whiteRating = -1; /* unknown */
181     gameInfo->blackRating = -1; /* unknown */
182     gameInfo->variant = VariantNormal;
183     gameInfo->variantName = NULL;
184     gameInfo->outOfBook = NULL;
185     gameInfo->resultDetails = NULL;
186 }
187 
188 
189 /* Create empty ListGame; returns ListGame or NULL, if out of memory.
190  *
191  * Note, that the ListGame is *not* added to any list
192  */
193 static ListGame *
GameListCreate()194 GameListCreate ()
195 {
196     ListGame *listGame;
197 
198     if ((listGame = (ListGame *) ListNodeCreate(sizeof(*listGame)))) {
199 	GameListInitGameInfo(&listGame->gameInfo);
200     }
201     return(listGame);
202 }
203 
204 
205 /* Creates a new game for the gamelist.
206  */
207 static int
GameListNewGame(ListGame ** listGamePtr)208 GameListNewGame (ListGame **listGamePtr)
209 {
210     if (!(*listGamePtr = (ListGame *) GameListCreate())) {
211 	GameListFree(&gameList);
212 	return(ENOMEM);
213     }
214     ListAddTail(&gameList, (ListNode *) *listGamePtr);
215     return(0);
216 }
217 
218 
219 /* Build the list of games in the open file f.
220  * Returns 0 for success or error number.
221  */
222 int
GameListBuild(FILE * f)223 GameListBuild (FILE *f)
224 {
225     ChessMove cm, lastStart;
226     int gameNumber;
227     ListGame *currentListGame = NULL;
228     int error, scratch=100, plyNr=0, fromX, fromY, toX, toY;
229     int offset;
230     char lastComment[MSG_SIZ], buf[MSG_SIZ];
231     TimeMark t, t2;
232 
233     GetTimeMark(&t);
234     GameListFree(&gameList);
235     yynewfile(f);
236     gameNumber = 0;
237     movePtr = 0;
238 
239     lastStart = (ChessMove) 0;
240     yyskipmoves = FALSE;
241     do {
242         yyboardindex = scratch;
243 	offset = yyoffset();
244 	quickFlag = plyNr + 1;
245 	cm = (ChessMove) Myylex();
246 	switch (cm) {
247 	  case GNUChessGame:
248 	    if ((error = GameListNewGame(&currentListGame))) {
249 		rewind(f);
250 		yyskipmoves = FALSE;
251 		return(error);
252 	    }
253 	    currentListGame->number = ++gameNumber;
254 	    currentListGame->offset = offset;
255 	    if(1) { CopyBoard(boards[scratch], initialPosition); plyNr = 0; currentListGame->moves = PackGame(boards[scratch]); }
256 	    if (currentListGame->gameInfo.event != NULL) {
257 		free(currentListGame->gameInfo.event);
258 	    }
259 	    currentListGame->gameInfo.event = StrSave(yy_text);
260 	    lastStart = cm;
261 	    break;
262 	  case XBoardGame:
263 	    lastStart = cm;
264 	    break;
265 	  case MoveNumberOne:
266 	    switch (lastStart) {
267 	      case GNUChessGame:
268 		break;		/*  ignore  */
269 	      case PGNTag:
270 		lastStart = cm;
271 		break;		/*  Already started */
272 	      case (ChessMove) 0:
273 	      case MoveNumberOne:
274 	      case XBoardGame:
275 		if ((error = GameListNewGame(&currentListGame))) {
276 		    rewind(f);
277 		    yyskipmoves = FALSE;
278 		    return(error);
279 		}
280 		currentListGame->number = ++gameNumber;
281 		currentListGame->offset = offset;
282 		if(1) { CopyBoard(boards[scratch], initialPosition); plyNr = 0; currentListGame->moves = PackGame(boards[scratch]); }
283 		lastStart = cm;
284 		break;
285 	      default:
286 		break;		/*  impossible  */
287 	    }
288 	    break;
289 	  case PGNTag:
290 	    lastStart = cm;
291 	    if ((error = GameListNewGame(&currentListGame))) {
292 		rewind(f);
293 		yyskipmoves = FALSE;
294 		return(error);
295 	    }
296 	    currentListGame->number = ++gameNumber;
297 	    currentListGame->offset = offset;
298 	    ParsePGNTag(yy_text, &currentListGame->gameInfo);
299 	    do {
300 		yyboardindex = 1;
301 		offset = yyoffset();
302 		cm = (ChessMove) Myylex();
303 		if (cm == PGNTag) {
304 		    ParsePGNTag(yy_text, &currentListGame->gameInfo);
305 		}
306 	    } while (cm == PGNTag || cm == Comment);
307 	    if(1) {
308 		int btm=0;
309 		if(currentListGame->gameInfo.fen) ParseFEN(boards[scratch], &btm, currentListGame->gameInfo.fen, FALSE);
310 		else CopyBoard(boards[scratch], initialPosition);
311 		plyNr = (btm != 0);
312 		currentListGame->moves = PackGame(boards[scratch]);
313 	    }
314 	    if(cm != NormalMove) break;
315 	  case IllegalMove:
316 		if(appData.testLegality) break;
317 	  case NormalMove:
318 	    /* Allow the first game to start with an unnumbered move */
319 	    yyskipmoves = FALSE;
320 	    if (lastStart == (ChessMove) 0) {
321 	      if ((error = GameListNewGame(&currentListGame))) {
322 		rewind(f);
323 		yyskipmoves = FALSE;
324 		return(error);
325 	      }
326 	      currentListGame->number = ++gameNumber;
327 	      currentListGame->offset = offset;
328 	      if(1) { CopyBoard(boards[scratch], initialPosition); plyNr = 0; currentListGame->moves = PackGame(boards[scratch]); }
329 	      lastStart = MoveNumberOne;
330 	    }
331 	  case WhiteCapturesEnPassant:
332 	  case BlackCapturesEnPassant:
333 	  case WhitePromotion:
334 	  case BlackPromotion:
335 	  case WhiteNonPromotion:
336 	  case BlackNonPromotion:
337 	  case WhiteKingSideCastle:
338 	  case WhiteQueenSideCastle:
339 	  case BlackKingSideCastle:
340 	  case BlackQueenSideCastle:
341 	  case WhiteKingSideCastleWild:
342 	  case WhiteQueenSideCastleWild:
343 	  case BlackKingSideCastleWild:
344 	  case BlackQueenSideCastleWild:
345 	  case WhiteHSideCastleFR:
346 	  case WhiteASideCastleFR:
347 	  case BlackHSideCastleFR:
348 	  case BlackASideCastleFR:
349 		fromX = currentMoveString[0] - AAA;
350 		fromY = currentMoveString[1] - ONE;
351 		toX = currentMoveString[2] - AAA;
352 		toY = currentMoveString[3] - ONE;
353 		plyNr++;
354 		ApplyMove(fromX, fromY, toX, toY, currentMoveString[4], boards[scratch]);
355 		if(currentListGame && currentListGame->moves) PackMove(fromX, fromY, toX, toY, boards[scratch][toY][toX]);
356 	    break;
357         case WhiteWins: // [HGM] rescom: save last comment as result details
358         case BlackWins:
359         case GameIsDrawn:
360         case GameUnfinished:
361 	    if(!currentListGame) break;
362 	    if(currentListGame->gameInfo.result == GameUnfinished)
363 		currentListGame->gameInfo.result = cm; // correct result tag with actual result
364 	    if (currentListGame->gameInfo.resultDetails != NULL) {
365 		free(currentListGame->gameInfo.resultDetails);
366 	    }
367 	    if(yy_text[0] == '{') {
368 		char *p;
369 		safeStrCpy(lastComment, yy_text+1, sizeof(lastComment)/sizeof(lastComment[0]));
370 		if((p = strchr(lastComment, '}'))) *p = 0;
371 		currentListGame->gameInfo.resultDetails = StrSave(lastComment);
372 	    }
373 	    break;
374 	  default:
375 	    break;
376 	}
377 	if(gameNumber % 1000 == 0) {
378 	    snprintf(buf, MSG_SIZ, _("Reading game file (%d)"), gameNumber);
379 	    DisplayTitle(buf); DoEvents();
380 	}
381     }
382     while (cm != (ChessMove) 0);
383 
384  if(currentListGame) {
385     if(!currentListGame->moves) DisplayError("Game cache overflowed\nPosition-searching might not work properly", 0);
386 
387     if (appData.debugMode) {
388 	for (currentListGame = (ListGame *) gameList.head;
389 	     currentListGame->node.succ;
390 	     currentListGame = (ListGame *) currentListGame->node.succ) {
391 
392 	    fprintf(debugFP, "Parsed game number %d, offset %ld:\n",
393 		    currentListGame->number, currentListGame->offset);
394 	    PrintPGNTags(debugFP, &currentListGame->gameInfo);
395 	}
396     }
397   }
398     if(appData.debugMode) { GetTimeMark(&t2);printf("GameListBuild %ld msec\n", SubtractTimeMarks(&t2,&t)); }
399     quickFlag = 0;
400     PackGame(boards[scratch]); // for appending end-of-game marker.
401     DisplayTitle("WinBoard");
402     rewind(f);
403     yyskipmoves = FALSE;
404     return 0;
405 }
406 
407 
408 /* Clear an existing GameInfo structure.
409  */
410 void
ClearGameInfo(GameInfo * gameInfo)411 ClearGameInfo (GameInfo *gameInfo)
412 {
413     if (gameInfo->event != NULL) {
414 	free(gameInfo->event);
415     }
416     if (gameInfo->site != NULL) {
417 	free(gameInfo->site);
418     }
419     if (gameInfo->date != NULL) {
420 	free(gameInfo->date);
421     }
422     if (gameInfo->round != NULL) {
423 	free(gameInfo->round);
424     }
425     if (gameInfo->white != NULL) {
426 	free(gameInfo->white);
427     }
428     if (gameInfo->black != NULL) {
429 	free(gameInfo->black);
430     }
431     if (gameInfo->resultDetails != NULL) {
432 	free(gameInfo->resultDetails);
433     }
434     if (gameInfo->fen != NULL) {
435 	free(gameInfo->fen);
436     }
437     if (gameInfo->timeControl != NULL) {
438 	free(gameInfo->timeControl);
439     }
440     if (gameInfo->extraTags != NULL) {
441 	free(gameInfo->extraTags);
442     }
443     if (gameInfo->variantName != NULL) {
444         free(gameInfo->variantName);
445     }
446     if (gameInfo->outOfBook != NULL) {
447         free(gameInfo->outOfBook);
448     }
449     GameListInitGameInfo(gameInfo);
450 }
451 
452 /* [AS] Replaced by "dynamic" tag selection below */
453 char *
GameListLineOld(int number,GameInfo * gameInfo)454 GameListLineOld (int number, GameInfo *gameInfo)
455 {
456     char *event = (gameInfo->event && strcmp(gameInfo->event, "?") != 0) ?
457 		     gameInfo->event : gameInfo->site ? gameInfo->site : "?";
458     char *white = gameInfo->white ? gameInfo->white : "?";
459     char *black = gameInfo->black ? gameInfo->black : "?";
460     char *date = gameInfo->date ? gameInfo->date : "?";
461     int len = 10 + strlen(event) + 2 + strlen(white) + 1 +
462       strlen(black) + 11 + strlen(date) + 1;
463     char *ret = (char *) malloc(len);
464     sprintf(ret, "%d. %s, %s-%s, %s, %s",
465 	    number, event, white, black, PGNResult(gameInfo->result), date);
466     return ret;
467 }
468 
469 #define MAX_FIELD_LEN   80  /* To avoid overflowing the buffer */
470 
471 char *
GameListLine(int number,GameInfo * gameInfo)472 GameListLine (int number, GameInfo * gameInfo)
473 {
474     char buffer[2*MSG_SIZ];
475     char * buf = buffer;
476     char * glt = appData.gameListTags;
477 
478     buf += sprintf( buffer, "%d.", number );
479 
480     while( *glt != '\0' ) {
481         *buf++ = ' ';
482 
483         switch( *glt ) {
484         case GLT_EVENT:
485             strncpy( buf, gameInfo->event ? gameInfo->event : "?", MAX_FIELD_LEN );
486             break;
487         case GLT_SITE:
488             strncpy( buf, gameInfo->site ? gameInfo->site : "?", MAX_FIELD_LEN );
489             break;
490         case GLT_DATE:
491             strncpy( buf, gameInfo->date ? gameInfo->date : "?", MAX_FIELD_LEN );
492             break;
493         case GLT_ROUND:
494             strncpy( buf, gameInfo->round ? gameInfo->round : "?", MAX_FIELD_LEN );
495             break;
496         case GLT_PLAYERS:
497             strncpy( buf, gameInfo->white ? gameInfo->white : "?", MAX_FIELD_LEN );
498             buf[ MAX_FIELD_LEN-1 ] = '\0';
499             buf += strlen( buf );
500             *buf++ = '-';
501             strncpy( buf, gameInfo->black ? gameInfo->black : "?", MAX_FIELD_LEN );
502             break;
503         case GLT_RESULT:
504 	    safeStrCpy( buf, PGNResult(gameInfo->result), 2*MSG_SIZ );
505             break;
506         case GLT_WHITE_ELO:
507             if( gameInfo->whiteRating > 0 )
508 	      sprintf( buf,  "%d", gameInfo->whiteRating );
509             else
510 	      safeStrCpy( buf, "?" , 2*MSG_SIZ);
511             break;
512         case GLT_BLACK_ELO:
513             if( gameInfo->blackRating > 0 )
514                 sprintf( buf, "%d", gameInfo->blackRating );
515             else
516 	      safeStrCpy( buf, "?" , 2*MSG_SIZ);
517             break;
518         case GLT_TIME_CONTROL:
519             strncpy( buf, gameInfo->timeControl ? gameInfo->timeControl : "?", MAX_FIELD_LEN );
520             break;
521         case GLT_VARIANT:
522             strncpy( buf, gameInfo->variantName ? gameInfo->variantName : VariantName(gameInfo->variant), MAX_FIELD_LEN );
523 //            strncpy( buf, VariantName(gameInfo->variant), MAX_FIELD_LEN );
524             break;
525         case GLT_OUT_OF_BOOK:
526             strncpy( buf, gameInfo->outOfBook ? gameInfo->outOfBook : "?", MAX_FIELD_LEN );
527             break;
528         case GLT_RESULT_COMMENT:
529             strncpy( buf, gameInfo->resultDetails ? gameInfo->resultDetails : "res?", MAX_FIELD_LEN );
530             break;
531         default:
532             break;
533         }
534 
535         buf[MAX_FIELD_LEN-1] = '\0';
536 
537         buf += strlen( buf );
538 
539         glt++;
540 
541         if( *glt != '\0' ) {
542             *buf++ = ',';
543         }
544     }
545 
546     *buf = '\0';
547 
548     return strdup( buffer );
549 }
550 
551 char *
GameListLineFull(int number,GameInfo * gameInfo)552 GameListLineFull (int number, GameInfo * gameInfo)
553 {
554     char * event = gameInfo->event ? gameInfo->event : "?";
555     char * site = gameInfo->site ? gameInfo->site : "?";
556     char * white = gameInfo->white ? gameInfo->white : "?";
557     char * black = gameInfo->black ? gameInfo->black : "?";
558     char * round = gameInfo->round ? gameInfo->round : "?";
559     char * date = gameInfo->date ? gameInfo->date : "?";
560     char * oob = gameInfo->outOfBook ? gameInfo->outOfBook : "";
561     char * reason = gameInfo->resultDetails ? gameInfo->resultDetails : "";
562 
563     int len = 64 + strlen(event) + strlen(site) + strlen(white) + strlen(black) + strlen(date) + strlen(oob) + strlen(reason);
564 
565     char *ret = (char *) malloc(len);
566 
567     sprintf(ret, "%d, \"%s\", \"%s\", \"%s\", \"%s\", \"%s\", \"%s\", \"%s\", \"%s\", \"%s\"",
568 	number, event, site, round, white, black, PGNResult(gameInfo->result), reason, date, oob );
569 
570     return ret;
571 }
572 // --------------------------------------- Game-List options dialog --------------------------------------
573 
574 // back-end
575 typedef struct {
576     char id;
577     char * name;
578 } GLT_Item;
579 
580 // back-end: translation table tag id-char <-> full tag name
581 static GLT_Item GLT_ItemInfo[] = {
582     { GLT_EVENT,      "Event" },
583     { GLT_SITE,       "Site" },
584     { GLT_DATE,       "Date" },
585     { GLT_ROUND,      "Round" },
586     { GLT_PLAYERS,    "Players" },
587     { GLT_RESULT,     "Result" },
588     { GLT_WHITE_ELO,  "White Rating" },
589     { GLT_BLACK_ELO,  "Black Rating" },
590     { GLT_TIME_CONTROL,"Time Control" },
591     { GLT_VARIANT,    "Variant" },
592     { GLT_OUT_OF_BOOK,PGN_OUT_OF_BOOK },
593     { GLT_RESULT_COMMENT, "Result Comment" }, // [HGM] rescom
594     { 0, 0 }
595 };
596 
597 char lpUserGLT[LPUSERGLT_SIZE];
598 
599 // back-end: convert the tag id-char to a full tag name
600 char *
GLT_FindItem(char id)601 GLT_FindItem (char id)
602 {
603     char * result = 0;
604 
605     GLT_Item * list = GLT_ItemInfo;
606 
607     while( list->id != 0 ) {
608         if( list->id == id ) {
609             result = list->name;
610             break;
611         }
612 
613         list++;
614     }
615 
616     return result;
617 }
618 
619 // back-end: build the list of tag names
620 void
GLT_TagsToList(char * tags)621 GLT_TagsToList (char *tags)
622 {
623     char * pc = tags;
624 
625     GLT_ClearList();
626 
627     while( *pc ) {
628         GLT_AddToList( GLT_FindItem(*pc) );
629         pc++;
630     }
631 
632     GLT_AddToList( "     --- Hidden tags ---     " );
633 
634     pc = GLT_ALL_TAGS;
635 
636     while( *pc ) {
637         if( strchr( tags, *pc ) == 0 ) {
638             GLT_AddToList( GLT_FindItem(*pc) );
639         }
640         pc++;
641     }
642 
643     GLT_DeSelectList();
644 }
645 
646 // back-end: retrieve item from dialog and translate to id-char
647 char
GLT_ListItemToTag(int index)648 GLT_ListItemToTag (int index)
649 {
650     char result = '\0';
651     char name[MSG_SIZ];
652 
653     GLT_Item * list = GLT_ItemInfo;
654 
655     if( GLT_GetFromList(index, name) ) {
656         while( list->id != 0 ) {
657             if( strcmp( list->name, name ) == 0 ) {
658                 result = list->id;
659                 break;
660             }
661 
662             list++;
663         }
664     }
665 
666     return result;
667 }
668 
669 // back-end: add items id-chars one-by-one to temp tags string
670 void
GLT_ParseList()671 GLT_ParseList ()
672 {
673     char * pc = lpUserGLT;
674     int idx = 0;
675     char id;
676 
677     do {
678 	id = GLT_ListItemToTag( idx );
679 	*pc++ = id;
680 	idx++;
681     } while( id != '\0' );
682 }
683