# Licensed under the GNU General Public License, version 2.
#
+use AnyEvent;
+use AnyEvent::Handle;
+use AnyEvent::HTTP;
+use Chess::PGN::Parse;
+use EV;
use Net::Telnet;
use FileHandle;
use IPC::Open2;
use Time::HiRes;
use JSON::XS;
require 'Position.pm';
+require 'Engine.pm';
use strict;
use warnings;
# Program starts here
$SIG{ALRM} = sub { output(); };
my $latest_update = undef;
+my $http_timer = undef;
$| = 1;
select(STDOUT);
# open the chess engine
-my $engine = open_engine($engine_cmdline, 'E1');
-my $engine2 = open_engine($engine2_cmdline, 'E2');
+my $engine = open_engine($engine_cmdline, 'E1', sub { handle_uci(@_, 1); });
+my $engine2 = open_engine($engine2_cmdline, 'E2', sub { handle_uci(@_, 0); });
my $last_move;
my $last_text = '';
my ($pos_waiting, $pos_calculating, $pos_calculating_second_engine);
$t->cmd("set seek 0");
$t->cmd("set style 12");
$t->cmd("observe $target");
-
-# main loop
print "FICS ready.\n";
-while (1) {
- my $rin = '';
- my $rout;
- vec($rin, fileno($engine->{'read'}), 1) = 1;
- if (defined($engine2)) {
- vec($rin, fileno($engine2->{'read'}), 1) = 1;
- }
- vec($rin, fileno($t), 1) = 1;
-
- my ($nfound, $timeleft) = select($rout=$rin, undef, undef, 5.0);
- my $sleep = 1.0;
-
- while (1) {
- my $line = $t->getline(Timeout => 0, errmode => 'return');
- last if (!defined($line));
-
- chomp $line;
- $line =~ tr/\r//d;
- if ($line =~ /^<12> /) {
- my $pos = Position->new($line);
-
- # if this is already in the queue, ignore it
- next if (defined($pos_waiting) && $pos->fen() eq $pos_waiting->fen());
-
- # if we're already chewing on this and there's nothing else in the queue,
- # also ignore it
- next if (!defined($pos_waiting) && defined($pos_calculating) &&
- $pos->fen() eq $pos_calculating->fen());
-
- # if we're already thinking on something, stop and wait for the engine
- # to approve
- if (defined($pos_calculating)) {
- if (!defined($pos_waiting)) {
- uciprint($engine, "stop");
- }
- if ($uci_assume_full_compliance) {
- $pos_waiting = $pos;
- } else {
- uciprint($engine, "position fen " . $pos->fen());
- uciprint($engine, "go infinite");
- $pos_calculating = $pos;
- }
- } else {
- # it's wrong just to give the FEN (the move history is useful,
- # and per the UCI spec, we should really have sent "ucinewgame"),
- # but it's easier
- uciprint($engine, "position fen " . $pos->fen());
- uciprint($engine, "go infinite");
- $pos_calculating = $pos;
- }
- if (defined($engine2)) {
- if (defined($pos_calculating_second_engine)) {
- uciprint($engine2, "stop");
- } else {
- uciprint($engine2, "position fen " . $pos->fen());
- uciprint($engine2, "go infinite");
- $pos_calculating_second_engine = $pos;
- }
- $engine2->{'info'} = {};
- }
+my $ev1 = AnyEvent->io(
+ fh => fileno($t),
+ poll => 'r',
+ cb => sub { # what callback to execute
+ while (1) {
+ my $line = $t->getline(Timeout => 0, errmode => 'return');
+ return if (!defined($line));
- $engine->{'info'} = {};
- $last_move = time;
-
- #
- # Output a command every move to note that we're
- # still paying attention -- this is a good tradeoff,
- # since if no move has happened in the last half
- # hour, the analysis/relay has most likely stopped
- # and we should stop hogging server resources.
- #
- $t->cmd("date");
+ chomp $line;
+ $line =~ tr/\r//d;
+ handle_fics($line);
}
- if ($line =~ /^([A-Za-z]+)(?:\([A-Z]+\))* tells you: (.*)$/) {
- my ($who, $msg) = ($1, $2);
-
- next if (grep { $_ eq $who } (@masters) == 0);
-
- if ($msg =~ /^fics (.*?)$/) {
- $t->cmd("tell $who Executing '$1' on FICS.");
- $t->cmd($1);
- } elsif ($msg =~ /^uci (.*?)$/) {
- $t->cmd("tell $who Sending '$1' to the engine.");
- print { $engine->{'write'} } "$1\n";
- } else {
- $t->cmd("tell $who Couldn't understand '$msg', sorry.");
- }
- }
- #print "FICS: [$line]\n";
- $sleep = 0;
- }
-
- # any fun on the UCI channel?
- if ($nfound > 0 && vec($rout, fileno($engine->{'read'}), 1) == 1) {
- my @lines = read_lines($engine);
- for my $line (@lines) {
- next if $line =~ /(upper|lower)bound/;
- handle_uci($engine, $line, 1);
- }
- $sleep = 0;
-
- output();
}
- if (defined($engine2) && $nfound > 0 && vec($rout, fileno($engine2->{'read'}), 1) == 1) {
- my @lines = read_lines($engine2);
- for my $line (@lines) {
- next if $line =~ /(upper|lower)bound/;
- handle_uci($engine2, $line, 0);
- }
- $sleep = 0;
-
- output();
- }
-
- sleep $sleep;
-}
+);
+# Engine events have already been set up by Engine.pm.
+EV::run;
sub handle_uci {
my ($engine, $line, $primary) = @_;
- chomp $line;
- $line =~ tr/\r//d;
$line =~ s/ / /g; # Sometimes needed for Zappa Mexico
print UCILOG localtime() . " $engine->{'tag'} <= $line\n";
if ($line =~ /^info/) {
$pos_calculating_second_engine = $pos;
}
}
+ output();
+}
+
+sub handle_fics {
+ my $line = shift;
+ if ($line =~ /^<12> /) {
+ handle_position(Position->new($line));
+ }
+ if ($line =~ /^([A-Za-z]+)(?:\([A-Z]+\))* tells you: (.*)$/) {
+ my ($who, $msg) = ($1, $2);
+
+ next if (grep { $_ eq $who } (@masters) == 0);
+
+ if ($msg =~ /^fics (.*?)$/) {
+ $t->cmd("tell $who Executing '$1' on FICS.");
+ $t->cmd($1);
+ } elsif ($msg =~ /^uci (.*?)$/) {
+ $t->cmd("tell $who Sending '$1' to the engine.");
+ print { $engine->{'write'} } "$1\n";
+ } elsif ($msg =~ /^pgn (.*?)$/) {
+ my $url = $1;
+ $t->cmd("tell $who Starting to poll '$url'.");
+ AnyEvent::HTTP::http_get($url, sub {
+ handle_pgn(@_, $url);
+ });
+ } elsif ($msg =~ /^stoppgn$/) {
+ $t->cmd("tell $who Stopping poll.");
+ $http_timer = undef;
+ } else {
+ $t->cmd("tell $who Couldn't understand '$msg', sorry.");
+ }
+ }
+ #print "FICS: [$line]\n";
+}
+
+sub handle_pgn {
+ my ($body, $header, $url) = @_;
+ 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;
+ for my $move (@$moves) {
+ my ($from_row, $from_col, $to_row, $to_col, $promo) = $pos->parse_pretty_move($move);
+ $pos = $pos->make_move($from_row, $from_col, $to_row, $to_col, $promo);
+ }
+ handle_position($pos);
+ }
+
+ $http_timer = AnyEvent->timer(after => 1.0, cb => sub {
+ AnyEvent::HTTP::http_get($url, sub {
+ handle_pgn(@_, $url);
+ });
+ });
+}
+
+sub handle_position {
+ my ($pos) = @_;
+
+ # if this is already in the queue, ignore it
+ return if (defined($pos_waiting) && $pos->fen() eq $pos_waiting->fen());
+
+ # if we're already chewing on this and there's nothing else in the queue,
+ # also ignore it
+ return if (!defined($pos_waiting) && defined($pos_calculating) &&
+ $pos->fen() eq $pos_calculating->fen());
+
+ # if we're already thinking on something, stop and wait for the engine
+ # to approve
+ if (defined($pos_calculating)) {
+ if (!defined($pos_waiting)) {
+ uciprint($engine, "stop");
+ }
+ if ($uci_assume_full_compliance) {
+ $pos_waiting = $pos;
+ } else {
+ uciprint($engine, "position fen " . $pos->fen());
+ uciprint($engine, "go infinite");
+ $pos_calculating = $pos;
+ }
+ } else {
+ # it's wrong just to give the FEN (the move history is useful,
+ # and per the UCI spec, we should really have sent "ucinewgame"),
+ # but it's easier
+ uciprint($engine, "position fen " . $pos->fen());
+ uciprint($engine, "go infinite");
+ $pos_calculating = $pos;
+ }
+
+ if (defined($engine2)) {
+ if (defined($pos_calculating_second_engine)) {
+ uciprint($engine2, "stop");
+ } else {
+ uciprint($engine2, "position fen " . $pos->fen());
+ uciprint($engine2, "go infinite");
+ $pos_calculating_second_engine = $pos;
+ }
+ $engine2->{'info'} = {};
+ }
+
+ $engine->{'info'} = {};
+ $last_move = time;
+
+ #
+ # Output a command every move to note that we're
+ # still paying attention -- this is a good tradeoff,
+ # since if no move has happened in the last half
+ # hour, the analysis/relay has most likely stopped
+ # and we should stop hogging server resources.
+ #
+ $t->cmd("date");
}
sub parse_infos {
}
my $pv = shift @pvs;
- my $from_col = col_letter_to_num(substr($pv, 0, 1));
- my $from_row = row_letter_to_num(substr($pv, 1, 1));
- my $to_col = col_letter_to_num(substr($pv, 2, 1));
- my $to_row = row_letter_to_num(substr($pv, 3, 1));
- my $promo = substr($pv, 4, 1);
-
- my $nb = $board->make_move($from_row, $from_col, $to_row, $to_col, $promo);
- my $piece = $board->[$from_row][$from_col];
-
- if ($piece eq '-') {
- die "Invalid move $pv";
- }
-
- # white short castling
- if ($pv eq 'e1g1' && $piece eq 'K') {
- return ('0-0', prettyprint_pv($nb, @pvs));
- }
-
- # white long castling
- if ($pv eq 'e1c1' && $piece eq 'K') {
- return ('0-0-0', prettyprint_pv($nb, @pvs));
- }
-
- # black short castling
- if ($pv eq 'e8g8' && $piece eq 'k') {
- return ('0-0', prettyprint_pv($nb, @pvs));
- }
-
- # black long castling
- if ($pv eq 'e8c8' && $piece eq 'k') {
- return ('0-0-0', prettyprint_pv($nb, @pvs));
- }
-
- my $pretty;
-
- # check if the from-piece is a pawn
- if (lc($piece) eq 'p') {
- # attack?
- if ($from_col != $to_col) {
- $pretty = substr($pv, 0, 1) . 'x' . substr($pv, 2, 2);
- } else {
- $pretty = substr($pv, 2, 2);
-
- if (length($pv) == 5) {
- # promotion
- $pretty .= "=";
- $pretty .= uc(substr($pv, 4, 1));
-
- if ($piece eq 'p') {
- $piece = substr($pv, 4, 1);
- } else {
- $piece = uc(substr($pv, 4, 1));
- }
- }
- }
- } else {
- $pretty = uc($piece);
-
- # see how many of these pieces could go here, in all
- my $num_total = 0;
- for my $col (0..7) {
- for my $row (0..7) {
- next unless ($board->[$row][$col] eq $piece);
- ++$num_total if ($board->can_reach($piece, $row, $col, $to_row, $to_col));
- }
- }
-
- # see how many of these pieces from the given row could go here
- my $num_row = 0;
- for my $col (0..7) {
- next unless ($board->[$from_row][$col] eq $piece);
- ++$num_row if ($board->can_reach($piece, $from_row, $col, $to_row, $to_col));
- }
-
- # and same for columns
- my $num_col = 0;
- for my $row (0..7) {
- next unless ($board->[$row][$from_col] eq $piece);
- ++$num_col if ($board->can_reach($piece, $row, $from_col, $to_row, $to_col));
- }
-
- # see if we need to disambiguate
- if ($num_total > 1) {
- if ($num_col == 1) {
- $pretty .= substr($pv, 0, 1);
- } elsif ($num_row == 1) {
- $pretty .= substr($pv, 1, 1);
- } else {
- $pretty .= substr($pv, 0, 2);
- }
- }
-
- # attack?
- if ($board->[$to_row][$to_col] ne '-') {
- $pretty .= 'x';
- }
-
- $pretty .= substr($pv, 2, 2);
- }
-
- if ($nb->in_mate()) {
- $pretty .= '#';
- } elsif ($nb->in_check() ne 'none') {
- $pretty .= '+';
- }
+ my ($from_col, $from_row, $to_col, $to_row, $promo) = parse_uci_move($pv);
+ my ($pretty, $nb) = $board->prettyprint_move($from_row, $from_col, $to_row, $to_col, $promo);
return ($pretty, prettyprint_pv($nb, @pvs));
}
sub uciprint {
my ($engine, $msg) = @_;
- print { $engine->{'write'} } "$msg\n";
+ $engine->print($msg);
print UCILOG localtime() . " $engine->{'tag'} => $msg\n";
}
}
sub open_engine {
- my ($cmdline, $tag) = @_;
-
+ my ($cmdline, $tag, $cb) = @_;
return undef if (!defined($cmdline));
-
- my ($uciread, $uciwrite);
- my $pid = IPC::Open2::open2($uciread, $uciwrite, $cmdline);
-
- my $engine = {
- pid => $pid,
- read => $uciread,
- readbuf => '',
- write => $uciwrite,
- info => {},
- ids => {},
- tag => $tag,
- };
-
- uciprint($engine, "uci");
-
- # gobble the options
- while (<$uciread>) {
- /uciok/ && last;
- handle_uci($engine, $_);
- }
-
- return $engine;
-}
-
-sub read_lines {
- my $engine = shift;
-
- #
- # Read until we've got a full line -- if the engine sends part of
- # a line and then stops we're pretty much hosed, but that should
- # never happen.
- #
- while ($engine->{'readbuf'} !~ /\n/) {
- my $tmp;
- my $ret = sysread $engine->{'read'}, $tmp, 4096;
-
- if (!defined($ret)) {
- next if ($!{EINTR});
- die "error in reading from the UCI engine: $!";
- } elsif ($ret == 0) {
- die "EOF from UCI engine";
- }
-
- $engine->{'readbuf'} .= $tmp;
- }
-
- # Blah.
- my @lines = ();
- while ($engine->{'readbuf'} =~ s/^([^\n]*)\n//) {
- my $line = $1;
- $line =~ tr/\r\n//d;
- push @lines, $line;
- }
- return @lines;
+ return Engine->open($cmdline, $tag, $cb);
}
sub col_letter_to_num {
return 7 - (ord(shift) - ord('1'));
}
+sub parse_uci_move {
+ my $move = shift;
+ my $from_col = col_letter_to_num(substr($move, 0, 1));
+ my $from_row = row_letter_to_num(substr($move, 1, 1));
+ my $to_col = col_letter_to_num(substr($move, 2, 1));
+ my $to_row = row_letter_to_num(substr($move, 3, 1));
+ my $promo = substr($move, 4, 1);
+ return ($from_col, $from_row, $to_col, $to_row, $promo);
+}
projects / remoteglot / blobdiff