X-Git-Url: https://git.sesse.net/?p=remoteglot;a=blobdiff_plain;f=remoteglot.pl;h=fb74e6eab5c0d04c454b532ae047ed509fe2141c;hp=4ccdac7e4b873d69143194795f2e6f71e0715806;hb=a8b50dfb8117c5495784ae330ccefa8db2355e83;hpb=ad566e0ccb947e1c2e3e81580edacaf88765701b;ds=sidebyside

diff --git a/remoteglot.pl b/remoteglot.pl
index 4ccdac7..fb74e6e 100755
--- a/remoteglot.pl
+++ b/remoteglot.pl
@@ -28,9 +28,10 @@ use warnings;
 no warnings qw(once);
 
 # Program starts here
-$SIG{ALRM} = sub { output(); };
 my $latest_update = undef;
+my $output_timer = undef;
 my $http_timer = undef;
+my $stop_pgn_fetch = 0;
 my $tb_retry_timer = undef;
 my %tb_cache = ();
 my $tb_lookup_running = 0;
@@ -93,8 +94,6 @@ $t->cmd("");
 $t->cmd("set shout 0");
 $t->cmd("set seek 0");
 $t->cmd("set style 12");
-$t->cmd("observe $remoteglotconf::target");
-print "FICS ready.\n";
 
 my $ev1 = AnyEvent->io(
 	fh => fileno($t),
@@ -110,6 +109,15 @@ my $ev1 = AnyEvent->io(
 		}
 	}
 );
+if (defined($remoteglotconf::target)) {
+	if ($remoteglotconf::target =~ /^http:/) {
+		fetch_pgn($remoteglotconf::target);
+	} else {
+		$t->cmd("observe $remoteglotconf::target");
+	}
+}
+print "FICS ready.\n";
+
 # Engine events have already been set up by Engine.pm.
 EV::run;
 
@@ -153,10 +161,59 @@ sub handle_uci {
 	output();
 }
 
+my $getting_movelist = 0;
+my $pos_for_movelist = undef;
+my @uci_movelist = ();
+my @pretty_movelist = ();
+
 sub handle_fics {
 	my $line = shift;
 	if ($line =~ /^<12> /) {
 		handle_position(Position->new($line));
+		$t->cmd("moves");
+	}
+	if ($line =~ /^Movelist for game /) {
+		my $pos = $pos_waiting // $pos_calculating;
+		if (defined($pos)) {
+			@uci_movelist = ();
+			@pretty_movelist = ();
+			$pos_for_movelist = Position->start_pos($pos->{'player_w'}, $pos->{'player_b'});
+			$getting_movelist = 1;
+		}
+	}
+	if ($getting_movelist &&
+	    $line =~ /^\s* \d+\. \s+                     # move number
+                       (\S+) \s+ \( [\d:.]+ \) \s*       # first move, then time
+	               (?: (\S+) \s+ \( [\d:.]+ \) )?    # second move, then time 
+	             /x) {
+		eval {
+			my $uci_move;
+			($pos_for_movelist, $uci_move) = $pos_for_movelist->make_pretty_move($1);
+			push @uci_movelist, $uci_move;
+			push @pretty_movelist, $1;
+
+			if (defined($2)) {
+				($pos_for_movelist, $uci_move) = $pos_for_movelist->make_pretty_move($2);
+				push @uci_movelist, $uci_move;
+				push @pretty_movelist, $2;
+			}
+		};
+		if ($@) {
+			warn "Error when getting FICS move history: $@";
+			$getting_movelist = 0;
+		}
+	}
+	if ($getting_movelist &&
+	    $line =~ /^\s+ \{.*\} \s+ (?: \* | 1\/2-1\/2 | 0-1 | 1-0 )/x) {
+		# End of movelist.
+		for my $pos ($pos_waiting, $pos_calculating) {
+			next if (!defined($pos));
+			if ($pos->fen() eq $pos_for_movelist->fen()) {
+				$pos->{'history'} = \@uci_movelist;
+				$pos->{'pretty_history'} = \@pretty_movelist;
+			}
+		}
+		$getting_movelist = 0;
 	}
 	if ($line =~ /^([A-Za-z]+)(?:\([A-Z]+\))* tells you: (.*)$/) {
 		my ($who, $msg) = ($1, $2);
@@ -172,11 +229,10 @@ sub handle_fics {
 		} elsif ($msg =~ /^pgn (.*?)$/) {
 			my $url = $1;
 			$t->cmd("tell $who Starting to poll '$url'.");
-			AnyEvent::HTTP::http_get($url, sub {
-				handle_pgn(@_, $url);
-			});
+			fetch_pgn($url);
 		} elsif ($msg =~ /^stoppgn$/) {
 			$t->cmd("tell $who Stopping poll.");
+			$stop_pgn_fetch = 1;
 			$http_timer = undef;
 		} elsif ($msg =~ /^quit$/) {
 			$t->cmd("tell $who Bye bye.");
@@ -188,30 +244,72 @@ sub handle_fics {
 	#print "FICS: [$line]\n";
 }
 
+# Starts periodic fetching of PGNs from the given URL.
+sub fetch_pgn {
+	my ($url) = @_;
+	AnyEvent::HTTP::http_get($url, sub {
+		handle_pgn(@_, $url);
+	});
+}
+
+my ($last_pgn_white, $last_pgn_black);
+my @last_pgn_uci_moves = ();
+my $pgn_hysteresis_counter = 0;
+
 sub handle_pgn {
 	my ($body, $header, $url) = @_;
+
+	if ($stop_pgn_fetch) {
+		$stop_pgn_fetch = 0;
+		$http_timer = undef;
+		return;
+	}
+
 	my $pgn = Chess::PGN::Parse->new(undef, $body);
 	if (!defined($pgn) || !$pgn->read_game()) {
 		warn "Error in parsing PGN from $url\n";
 	} else {
-		$pgn->quick_parse_game;
-		my $pos = Position->start_pos($pgn->white, $pgn->black);
-		my $moves = $pgn->moves;
-		my @uci_moves = ();
-		for my $move (@$moves) {
-			my ($from_row, $from_col, $to_row, $to_col, $promo) = $pos->parse_pretty_move($move);
-			push @uci_moves, Board::move_to_uci_notation($from_row, $from_col, $to_row, $to_col, $promo);
-			$pos = $pos->make_move($from_row, $from_col, $to_row, $to_col, $promo);
-		}
-		$pos->{'history'} = \@uci_moves;
-		$pos->{'pretty_history'} = $moves;
-		handle_position($pos);
+		eval {
+			$pgn->quick_parse_game;
+			my $pos = Position->start_pos($pgn->white, $pgn->black);
+			my $moves = $pgn->moves;
+			my @uci_moves = ();
+			for my $move (@$moves) {
+				my $uci_move;
+				($pos, $uci_move) = $pos->make_pretty_move($move);
+				push @uci_moves, $uci_move;
+			}
+			$pos->{'history'} = \@uci_moves;
+			$pos->{'pretty_history'} = $moves;
+
+			# Sometimes, PGNs lose a move or two for a short while,
+			# or people push out new ones non-atomically. 
+			# Thus, if we PGN doesn't change names but becomes
+			# shorter, we mistrust it for a few seconds.
+			my $trust_pgn = 1;
+			if (defined($last_pgn_white) && defined($last_pgn_black) &&
+			    $last_pgn_white eq $pgn->white &&
+			    $last_pgn_black eq $pgn->black &&
+			    scalar(@uci_moves) < scalar(@last_pgn_uci_moves)) {
+				if (++$pgn_hysteresis_counter < 3) {
+					$trust_pgn = 0;	
+				}
+			}
+			if ($trust_pgn) {
+				$last_pgn_white = $pgn->white;
+				$last_pgn_black = $pgn->black;
+				@last_pgn_uci_moves = @uci_moves;
+				$pgn_hysteresis_counter = 0;
+				handle_position($pos);
+			}
+		};
+		if ($@) {
+			warn "Error in parsing moves from $url\n";
+		}
 	}
 	
 	$http_timer = AnyEvent->timer(after => 1.0, cb => sub {
-		AnyEvent::HTTP::http_get($url, sub {
-			handle_pgn(@_, $url);
-		});
+		fetch_pgn($url);
 	});
 }
 
@@ -393,7 +491,8 @@ sub output {
 	# Don't update too often.
 	my $age = Time::HiRes::tv_interval($latest_update);
 	if ($age < $remoteglotconf::update_max_interval) {
-		Time::HiRes::alarm($remoteglotconf::update_max_interval + 0.01 - $age);
+		my $wait = $remoteglotconf::update_max_interval + 0.01 - $age;
+		$output_timer = AnyEvent->timer(after => $wait, cb => \&output);
 		return;
 	}
 	
@@ -417,7 +516,7 @@ sub output {
 
 		my $t = $tb_cache{$fen};
 		my $pv = $t->{'pv'};
-		my $matelen = int((1 + scalar @$pv) / 2);
+		my $matelen = int((1 + $t->{'score'}) / 2);
 		if ($t->{'result'} eq '1/2-1/2') {
 			$info->{'score_cp'} = 0;
 		} elsif ($t->{'result'} eq '1-0') {
@@ -643,11 +742,18 @@ sub output_json {
 	}
 	$json->{'refutation_lines'} = \%refutation_lines;
 
-	open my $fh, ">", $remoteglotconf::json_output . ".tmp"
+	my $encoded = JSON::XS::encode_json($json);
+	atomic_set_contents($remoteglotconf::json_output, $encoded);
+}
+
+sub atomic_set_contents {
+	my ($filename, $contents) = @_;
+
+	open my $fh, ">", $filename . ".tmp"
 		or return;
-	print $fh JSON::XS::encode_json($json);
+	print $fh $contents;
 	close $fh;
-	rename($remoteglotconf::json_output . ".tmp", $remoteglotconf::json_output);
+	rename($filename . ".tmp", $filename);
 }
 
 sub uciprint {
@@ -846,13 +952,14 @@ sub handle_tb_lookup_return {
 				my $moves = $pgn->moves;
 				my @uci_moves = ();
 				for my $move (@$moves) {
-					my ($from_row, $from_col, $to_row, $to_col, $promo) = $pvpos->parse_pretty_move($move);
-					push @uci_moves, Board::move_to_uci_notation($from_row, $from_col, $to_row, $to_col, $promo);
-					$pvpos = $pvpos->make_move($from_row, $from_col, $to_row, $to_col, $promo);
+					my $uci_move;
+					($pvpos, $uci_move) = $pvpos->make_pretty_move($move);
+					push @uci_moves, $uci_move;
 				}
 				$tb_cache{$fen} = {
 					result => $pgn->result,
-					pv => \@uci_moves
+					pv => \@uci_moves,
+					score => $response->{'Response'}{'Score'},
 				};
 				output();
 			}