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Space inflate Position::to_fen()

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Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2008-09-29 19:02:48 +02:00
parent e9e51da4b8
commit 849809e97e
1 changed files with 40 additions and 30 deletions
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70
src/position.cpp
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@ -70,7 +70,7 @@ Position::Position(const std::string &fen) {
void Position::from_fen(const std::string &fen) {
static const std::string piecesStr = "KQRBNPkqrbnp";
static const std::string pieceLetters = "KQRBNPkqrbnp";
static const Piece pieces[] = { WK, WQ, WR, WB, WN, WP, BK, BQ, BR, BB, BN, BP };
clear();
@ -93,7 +93,7 @@ void Position::from_fen(const std::string &fen) {
rank--;
continue;
}
size_t idx = piecesStr.find(fen[i]);
size_t idx = pieceLetters.find(fen[i]);
if (idx == std::string::npos)
{
std::cout << "Error in FEN at character " << i << std::endl;
@ -214,40 +214,50 @@ void Position::from_fen(const std::string &fen) {
/// probably only useful for debugging.
const std::string Position::to_fen() const {
char pieceLetters[] = " PNBRQK pnbrqk";
std::string result;
static const std::string pieceLetters = " PNBRQK pnbrqk";
std::string fen;
int skip;
for(Rank rank = RANK_8; rank >= RANK_1; rank--) {
skip = 0;
for(File file = FILE_A; file <= FILE_H; file++) {
Square square = make_square(file, rank);
if(square_is_occupied(square)) {
if(skip > 0) result += (char)skip + '0';
result += pieceLetters[piece_on(square)];
skip = 0;
for (Rank rank = RANK_8; rank >= RANK_1; rank--)
{
skip = 0;
for (File file = FILE_A; file <= FILE_H; file++)
{
Square sq = make_square(file, rank);
if (!square_is_occupied(sq))
{ skip++;
continue;
}
if (skip > 0)
{
fen += (char)skip + '0';
skip = 0;
}
fen += pieceLetters[piece_on(sq)];
}
else skip++;
}
if(skip > 0) result += (char)skip + '0';
result += (rank > RANK_1)? '/' : ' ';
if (skip > 0)
fen += (char)skip + '0';
fen += (rank > RANK_1 ? '/' : ' ');
}
fen += (sideToMove == WHITE ? 'w' : 'b') + ' ';
if (castleRights != NO_CASTLES)
{
if (can_castle_kingside(WHITE)) fen += 'K';
if (can_castle_queenside(WHITE)) fen += 'Q';
if (can_castle_kingside(BLACK)) fen += 'k';
if (can_castle_queenside(BLACK)) fen += 'q';
} else
fen += '-';
result += (sideToMove == WHITE)? 'w' : 'b';
result += ' ';
if(castleRights == NO_CASTLES) result += '-';
else {
if(can_castle_kingside(WHITE)) result += 'K';
if(can_castle_queenside(WHITE)) result += 'Q';
if(can_castle_kingside(BLACK)) result += 'k';
if(can_castle_queenside(BLACK)) result += 'q';
}
fen += ' ';
if (ep_square() != SQ_NONE)
fen += square_to_string(ep_square());
else
fen += '-';
result += ' ';
if(ep_square() == SQ_NONE) result += '-';
else result += square_to_string(ep_square());
return result;
return fen;
}