X-Git-Url: https://git.sesse.net/?p=remoteglot-book;a=blobdiff_plain;f=www%2Fopening-stats.pl;h=c283248395aab0cf62496b2b6b66c0e99f26b6ce;hp=3a02cf9fde6fcd917b5d3cbc6237c9a3949c4ce2;hb=4fa00c4fbfb86465b2d50bb0b5642f00c6b9329b;hpb=55481cd69d21b31bfdcc6e33853ea475ed16f622

diff --git a/www/opening-stats.pl b/www/opening-stats.pl
index 3a02cf9..c283248 100755
--- a/www/opening-stats.pl
+++ b/www/opening-stats.pl
@@ -6,6 +6,7 @@ use JSON::XS;
 use lib '..';
 use Position;
 use IPC::Open2;
+use Chess::PGN::Parse;
 
 our %openings = ();
 read_openings();
@@ -21,11 +22,41 @@ my $hex = unpack('H*', $pos->bitpacked_fen);
 print $chld_in $hex, "\n";
 chomp (my $line = <$chld_out>);
 
-my ($white, $draw, $black, $opening_num, $white_avg_elo, $black_avg_elo, $num_elo, $timestamp, $pgn_start_position, @moves) = split / /, $line;
+my ($white, $draw, $black, $opening_num, $white_avg_elo, $black_avg_elo, $num_elo, $timestamp, $pgn_file_number, $pgn_start_position, @moves) = split / /, $line;
+my @json_moves = ();
+push @json_moves, {
+	white => $white * 1,
+	draw => $draw * 1,
+	black => $black * 1,
+	white_avg_elo => $white_avg_elo * 1,
+	black_avg_elo => $black_avg_elo * 1,
+	num_elo => $num_elo * 1
+};
+
 my $opening = $openings{$opening_num} // 'A00: Start position';
 
+my $root_game;
+eval {
+	die "Missing PGN position data." if (!defined($pgn_file_number) || !defined($pgn_start_position));
+	my $pgntext = read_root_pgn($pgn_file_number, $pgn_start_position);
+	my $pgn = Chess::PGN::Parse->new(undef, $pgntext);
+	$pgn->read_game() or die;
+	$pgn->parse_game() or die;
+
+	my $tags = $pgn->tags;
+	$root_game = {};
+	$root_game->{'white'} = $pgn->white;
+	$root_game->{'white_elo'} = $tags->{'WhiteElo'};
+	$root_game->{'black'} = $pgn->black;
+	$root_game->{'black_elo'} = $tags->{'BlackElo'};
+	$root_game->{'event'} = $pgn->event;
+	$root_game->{'date'} = $pgn->date;
+	$root_game->{'result'} = $pgn->result;
+	$root_game->{'eco'} = $pgn->eco;
+	$root_game->{'moves'} = scalar @{$pgn->moves};
+};
+
 # Explore one move out.
-my @json_moves = ();
 for my $move (@moves) {
 	my ($np, $uci_move) = $pos->make_pretty_move($move);
 	my $hex = unpack('H*', $np->bitpacked_fen);
@@ -44,12 +75,7 @@ for my $move (@moves) {
 }
 
 print $cgi->header(-type=>'application/json');
-print JSON::XS::encode_json({ moves => \@json_moves, opening => $opening });
-
-sub num {
-	my $x = shift;
-	return $x->{'white'} + $x->{'draw'} + $x->{'black'};
-}
+print JSON::XS::encode_json({ moves => \@json_moves, opening => $opening, root_game => $root_game });
 
 sub read_openings {
 	open my $fh, "../openings.txt"
@@ -65,3 +91,31 @@ sub read_openings {
 	}
 	close $fh;
 }
+
+sub read_root_pgn {
+	my @pgnnames;
+	open my $pgnnamesfh, "<", "../pgnnames.txt"
+		or die "../pgnnames.txt: $!";
+	while (<$pgnnamesfh>) {
+		chomp;
+		push @pgnnames, $_;
+	}
+	close $pgnnamesfh;
+
+	if ($pgn_file_number > $#pgnnames) {
+		die "Unknown PGN file number $pgn_file_number";
+	}
+
+	my $root_pgn;
+	open my $pgnfh, "<", "../" . $pgnnames[$pgn_file_number]
+		or die $pgnnames[$pgn_file_number] . ": $!";
+	sysseek($pgnfh, $pgn_start_position, 0)
+		or die "Could not seek to $pgn_start_position: $!";
+	sysread($pgnfh, $root_pgn, 32768)
+		or die "Could not read PGN from $pgn_start_position at $pgnnames[$pgn_file_number]: $!";
+	close $pgnfh;
+	$root_pgn =~ s/^.*?(\[Event )/$1/s;
+	$root_pgn =~ s/^(.+?)\[Event .*/$1/s;
+
+	return $root_pgn;
+}