}
}
-char *ProbeBook(int moveNr, char *book)
-{
+int GetBookMoves(int moveNr, char *book, entry_t entries[])
+{ // retrieve all entries for given position from book in 'entries', return number.
FILE *f;
entry_t entry;
int offset;
uint64 key;
- entry_t entries[MOVE_BUF];
- int count=0;
- int ret, i, j;
- static char move_s[6];
- int total_weight;
+ int count;
+ int ret;
- if(book == NULL || moveNr >= 2*appData.bookDepth) return NULL;
-// if(gameInfo.variant != VariantNormal) return NULL; // Zobrist scheme only works for normal Chess, so far
+ if(book == NULL || moveNr >= 2*appData.bookDepth) return -1;
+// if(gameInfo.variant != VariantNormal) return -1; // Zobrist scheme only works for normal Chess, so far
f=fopen(book,"rb");
if(!f){
- DisplayError("Polyglot book not valid", 0);
+ DisplayError("Polyglot book not valid", 0);
appData.usePolyglotBook = FALSE;
- return NULL;
+ return -1;
}
key = hash(moveNr);
offset=find_key(f, key, &entry);
if(entry.key != key) {
fclose(f);
- return NULL;
+ return FALSE;
}
entries[0] = entry;
count=1;
if(count == MOVE_BUF) break;
entries[count++] = entry;
}
+ fclose(f);
+ return count;
+}
+
+char *ProbeBook(int moveNr, char *book)
+{ //
+ entry_t entries[MOVE_BUF];
+ int count;
+ int i, j;
+ static char move_s[6];
+ int total_weight;
+
+ if((count = GetBookMoves(moveNr, book, entries)) <= 0) return NULL; // no book, or no hit
+
if(appData.bookStrength != 50) { // transform weights
double power = 0, maxWeight = 0.0;
if(appData.bookStrength) power = (100.-appData.bookStrength)/appData.bookStrength;
move_to_string(move_s, entries[i].move);
if(appData.debugMode) fprintf(debugFP, "book move field = %d\n", entries[i].move);
- fclose(f);
return move_s;
}
+
+extern char yy_textstr[];
+entry_t lastEntries[MOVE_BUF];
+
+char *MovesToText(int count, entry_t *entries)
+{
+ int i, totalWeight = 0;
+ char algMove[6];
+ char *p = (char*) malloc(30*count+1);
+ for(i=0; i<count; i++) totalWeight += entries[i].weight;
+ *p = 0;
+ for(i=0; i<count; i++) {
+ move_to_string(algMove, entries[i].move);
+ snprintf(p+strlen(p), 30, "%5.1f%% %5d %s\n", 100*entries[i].weight/(totalWeight+0.001), entries[i].weight, algMove);
+//lastEntries[i] = entries[i];
+ }
+ return p;
+}
+
+int TextToMoves(char *text, int moveNum, entry_t *entries)
+{
+ int i, w, count=0;
+ uint64 hashKey = hash(moveNum);
+ int fromX, fromY, toX, toY, to, from;
+ ChessMove moveType;
+ char promoChar, valid;
+ float dummy;
+ int width = BOARD_RGHT - BOARD_LEFT;
+
+ while((i=sscanf(text, "%f%%%d", &dummy, &w))==2 || (i=sscanf(text, "%d", &w))==1) {
+ if(i == 2) text = strchr(text, '%') + 1; // skip percentage
+ if(w == 1) text = strstr(text, "1 ") + 2; // skip weight that could be recognized as move number one
+ valid = ParseOneMove(text, moveNum, &moveType, &fromX, &fromY, &toX, &toY, &promoChar);
+ text = strstr(text, yy_textstr) + strlen(yy_textstr); // skip what we parsed
+ if(!valid || moveType != NormalMove) continue;
+ to = toX + toY * width;
+ from = fromX + fromY * width;
+ // TODO: promotions, drops
+ entries[count].move = to + from * width * BOARD_HEIGHT;
+ entries[count].key = hashKey;
+ entries[count].weight = w;
+ entries[count].learn = 0; //TODO: learn value?
+ count++;
+ }
+ return count;
+}
+
+Boolean bookUp;
+int currentCount;
+
+Boolean DisplayBook(int moveNr)
+{
+ entry_t entries[MOVE_BUF];
+ int count;
+ char *p;
+ if(!bookUp) return FALSE;
+ count = currentCount = GetBookMoves(moveNr, appData.polyglotBook, entries);
+ if(count < 0) return FALSE;
+ p = MovesToText(count, entries);
+ EditTagsPopUp(p, NULL);
+ free(p);
+ return TRUE;
+}
+
+void EditBookEvent()
+{
+ bookUp = TRUE;
+ bookUp = DisplayBook(currentMove);
+}
+
+void int_to_file(FILE *f, int l, uint64 r)
+{
+ int i;
+ for(i=l-1;i>=0;i--) fputc(r>>8*i & 255, f);
+}
+
+void entry_to_file(FILE *f, entry_t *entry)
+{
+ int_to_file(f,8,entry->key);
+ int_to_file(f,2,entry->move);
+ int_to_file(f,2,entry->weight);
+ int_to_file(f,4,entry->learn);
+}
+
+char buf1[4096], buf2[4096];
+
+void SaveToBook(char *text)
+{
+ entry_t entries[MOVE_BUF], entry;
+ int count = TextToMoves(text, currentMove, entries);
+ int offset, i, len1=0, len2, readpos=0, writepos=0;
+ FILE *f;
+ if(!count) return;
+ f=fopen(appData.polyglotBook, "rb+");
+ if(!f){ DisplayError("Polyglot book not valid", 0); return; }
+ offset=find_key(f, entries[0].key, &entry);
+ if(entries[0].key != entry.key) {
+ DisplayError("Hash keys are different", 0);
+ fclose(f);
+ return;
+ }
+ if(count != currentCount) {
+ readpos = 16*(offset + currentCount);
+ writepos = 16*(offset + count);
+ fseek(f, readpos, SEEK_SET);
+ readpos += len1 = fread(buf1, 1, 4096 - 16*currentCount, f); // salvage some entries immediately behind change
+ }
+ fseek(f, 16*(offset), SEEK_SET);
+ for(i=0; i<count; i++) entry_to_file(f, entries + i); // save the change
+ if(count != currentCount) {
+ do {
+ for(i=0; i<len1; i++) buf2[i] = buf1[i]; len2 = len1;
+ fseek(f, readpos, SEEK_SET);
+ readpos += len1 = fread(buf1, 1, 4096, f);
+ fseek(f, writepos, SEEK_SET);
+ fwrite(buf2, 1, len2, f);
+ writepos += len2;
+ } while(len1);
+ }
+ fclose(f);
+}
projects / xboard.git / commitdiff