… | |
… | |
20 | use Coro::Signal; |
20 | use Coro::Signal; |
21 | use Coro::Semaphore; |
21 | use Coro::Semaphore; |
22 | use Coro::AIO; |
22 | use Coro::AIO; |
23 | use Coro::Storable; |
23 | use Coro::Storable; |
24 | |
24 | |
|
|
25 | use JSON::XS 1.4 (); |
25 | use BDB (); |
26 | use BDB (); |
26 | use Data::Dumper; |
27 | use Data::Dumper; |
27 | use Digest::MD5; |
28 | use Digest::MD5; |
28 | use Fcntl; |
29 | use Fcntl; |
29 | use YAML::Syck (); |
30 | use YAML::Syck (); |
30 | use IO::AIO 2.32 (); |
31 | use IO::AIO 2.32 (); |
31 | use Time::HiRes; |
32 | use Time::HiRes; |
32 | use Compress::LZF; |
33 | use Compress::LZF; |
|
|
34 | use Digest::MD5 (); |
33 | |
35 | |
34 | # configure various modules to our taste |
36 | # configure various modules to our taste |
35 | # |
37 | # |
36 | $Storable::canonical = 1; # reduce rsync transfers |
38 | $Storable::canonical = 1; # reduce rsync transfers |
37 | Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator |
39 | Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator |
… | |
… | |
237 | $d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge; |
239 | $d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge; |
238 | $d |
240 | $d |
239 | } || "[unable to dump $_[0]: '$@']"; |
241 | } || "[unable to dump $_[0]: '$@']"; |
240 | } |
242 | } |
241 | |
243 | |
242 | use JSON::XS (); |
|
|
243 | |
|
|
244 | =item $ref = cf::from_json $json |
244 | =item $ref = cf::from_json $json |
245 | |
245 | |
246 | Converts a JSON string into the corresponding perl data structure. |
246 | Converts a JSON string into the corresponding perl data structure. |
247 | |
247 | |
248 | =item $json = cf::to_json $ref |
248 | =item $json = cf::to_json $ref |
249 | |
249 | |
250 | Converts a perl data structure into its JSON representation. |
250 | Converts a perl data structure into its JSON representation. |
251 | |
251 | |
252 | =cut |
252 | =cut |
253 | |
253 | |
254 | our $json_coder = JSON::XS->new->convert_blessed->utf8; |
254 | our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max |
255 | |
255 | |
256 | sub to_json ($) { $json_coder->encode ($_[0]) } |
256 | sub to_json ($) { $json_coder->encode ($_[0]) } |
257 | sub from_json ($) { $json_coder->decode ($_[0]) } |
257 | sub from_json ($) { $json_coder->decode ($_[0]) } |
258 | |
258 | |
259 | =item cf::lock_wait $string |
259 | =item cf::lock_wait $string |
… | |
… | |
410 | Coro::Storable. May, of course, block. Note that the executed sub may |
410 | Coro::Storable. May, of course, block. Note that the executed sub may |
411 | never block itself or use any form of Event handling. |
411 | never block itself or use any form of Event handling. |
412 | |
412 | |
413 | =cut |
413 | =cut |
414 | |
414 | |
|
|
415 | sub _store_scalar { |
|
|
416 | open my $fh, ">", \my $buf |
|
|
417 | or die "fork_call: cannot open fh-to-buf in child : $!"; |
|
|
418 | Storable::store_fd $_[0], $fh; |
|
|
419 | close $fh; |
|
|
420 | |
|
|
421 | $buf |
|
|
422 | } |
|
|
423 | |
415 | sub fork_call(&@) { |
424 | sub fork_call(&@) { |
416 | my ($cb, @args) = @_; |
425 | my ($cb, @args) = @_; |
417 | |
426 | |
418 | # socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC |
427 | # socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC |
419 | # or die "socketpair: $!"; |
428 | # or die "socketpair: $!"; |
… | |
… | |
422 | |
431 | |
423 | if (my $pid = fork) { |
432 | if (my $pid = fork) { |
424 | close $fh2; |
433 | close $fh2; |
425 | |
434 | |
426 | my $res = (Coro::Handle::unblock $fh1)->readline (undef); |
435 | my $res = (Coro::Handle::unblock $fh1)->readline (undef); |
|
|
436 | warn "pst<$res>" unless $res =~ /^pst/; |
427 | $res = Coro::Storable::thaw $res; |
437 | $res = Coro::Storable::thaw $res; |
428 | |
438 | |
429 | waitpid $pid, 0; # should not block anymore, we expect the child to simply behave |
439 | waitpid $pid, 0; # should not block anymore, we expect the child to simply behave |
430 | |
440 | |
431 | die $$res unless "ARRAY" eq ref $res; |
441 | Carp::confess $$res unless "ARRAY" eq ref $res; |
432 | |
442 | |
433 | return wantarray ? @$res : $res->[-1]; |
443 | return wantarray ? @$res : $res->[-1]; |
434 | } else { |
444 | } else { |
435 | reset_signals; |
445 | reset_signals; |
436 | local $SIG{__WARN__}; |
446 | local $SIG{__WARN__}; |
437 | local $SIG{__DIE__}; |
447 | local $SIG{__DIE__}; |
|
|
448 | # just in case, this hack effectively disables event |
|
|
449 | # in the child. cleaner and slower would be canceling all watchers, |
|
|
450 | # but this works for the time being. |
|
|
451 | local $Coro::idle; |
|
|
452 | $Coro::current->prio (Coro::PRIO_MAX); |
|
|
453 | |
438 | eval { |
454 | eval { |
439 | close $fh1; |
455 | close $fh1; |
440 | |
456 | |
441 | my @res = eval { $cb->(@args) }; |
457 | my @res = eval { $cb->(@args) }; |
|
|
458 | |
442 | syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res); |
459 | syswrite $fh2, _store_scalar $@ ? \"$@" : \@res; |
|
|
460 | close $fh2; |
443 | }; |
461 | }; |
444 | |
462 | |
445 | warn $@ if $@; |
463 | warn $@ if $@; |
446 | _exit 0; |
464 | _exit 0; |
447 | } |
465 | } |
… | |
… | |
1087 | cf::override; |
1105 | cf::override; |
1088 | }, |
1106 | }, |
1089 | on_extcmd => sub { |
1107 | on_extcmd => sub { |
1090 | my ($pl, $buf) = @_; |
1108 | my ($pl, $buf) = @_; |
1091 | |
1109 | |
1092 | my $msg = eval { from_json $buf }; |
1110 | my $msg = eval { $pl->ns->{json_coder}->decode ($buf) }; |
1093 | |
1111 | |
1094 | if (ref $msg) { |
1112 | if (ref $msg) { |
1095 | if (my $cb = $EXTCMD{$msg->{msgtype}}) { |
1113 | if (my $cb = $EXTCMD{$msg->{msgtype}}) { |
1096 | if (my %reply = $cb->($pl, $msg)) { |
1114 | if (my %reply = $cb->($pl, $msg)) { |
1097 | $pl->ext_reply ($msg->{msgid}, %reply); |
1115 | $pl->ext_reply ($msg->{msgid}, %reply); |
… | |
… | |
1401 | # replace G<male|female> tags |
1419 | # replace G<male|female> tags |
1402 | || s{G<([^>|]*)\|([^>]*)>}{ |
1420 | || s{G<([^>|]*)\|([^>]*)>}{ |
1403 | $self->gender ? $2 : $1 |
1421 | $self->gender ? $2 : $1 |
1404 | }ge |
1422 | }ge |
1405 | # replace H<hint text> |
1423 | # replace H<hint text> |
1406 | || s/H<([^\>]*)>/<fg name="lightblue">[$1]<\/fg>/g; |
1424 | || s{H<([^\>]*)>} |
|
|
1425 | { |
|
|
1426 | ("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>", |
|
|
1427 | "<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>", |
|
|
1428 | "") |
|
|
1429 | [$self->{hintmode}] |
|
|
1430 | }ge; |
1407 | |
1431 | |
1408 | # create single paragraphs (very hackish) |
1432 | # create single paragraphs (very hackish) |
1409 | s/(?<=\S)\n(?=\w)/ /g; |
1433 | s/(?<=\S)\n(?=\w)/ /g; |
1410 | |
1434 | |
|
|
1435 | # compress some whitespace |
|
|
1436 | s/\s+\n/\n/g; # ws line-ends |
|
|
1437 | s/\n\n+/\n/g; # double lines |
|
|
1438 | s/^\n+//; # beginning lines |
|
|
1439 | s/\n+$//; # ending lines |
|
|
1440 | |
1411 | $_ |
1441 | $_ |
|
|
1442 | } |
|
|
1443 | |
|
|
1444 | sub hintmode { |
|
|
1445 | $_[0]{hintmode} = $_[1] if @_ > 1; |
|
|
1446 | $_[0]{hintmode} |
1412 | } |
1447 | } |
1413 | |
1448 | |
1414 | =item $player->ext_reply ($msgid, %msg) |
1449 | =item $player->ext_reply ($msgid, %msg) |
1415 | |
1450 | |
1416 | Sends an ext reply to the player. |
1451 | Sends an ext reply to the player. |
… | |
… | |
1419 | |
1454 | |
1420 | sub ext_reply($$%) { |
1455 | sub ext_reply($$%) { |
1421 | my ($self, $id, %msg) = @_; |
1456 | my ($self, $id, %msg) = @_; |
1422 | |
1457 | |
1423 | $msg{msgid} = $id; |
1458 | $msg{msgid} = $id; |
1424 | $self->send ("ext " . cf::to_json \%msg); |
1459 | $self->send ("ext " . $self->ns->{json_coder}->encode (\%msg)); |
1425 | } |
1460 | } |
1426 | |
1461 | |
1427 | =item $player->ext_event ($type, %msg) |
1462 | =item $player->ext_event ($type, %msg) |
1428 | |
1463 | |
1429 | Sends an ext event to the client. |
1464 | Sends an ext event to the client. |
… | |
… | |
1454 | my ($path) = @_; |
1489 | my ($path) = @_; |
1455 | |
1490 | |
1456 | my ($match, $specificity); |
1491 | my ($match, $specificity); |
1457 | |
1492 | |
1458 | for my $region (list) { |
1493 | for my $region (list) { |
1459 | if ($region->match && $path =~ $region->match) { |
1494 | if ($region->{match} && $path =~ $region->{match}) { |
1460 | ($match, $specificity) = ($region, $region->specificity) |
1495 | ($match, $specificity) = ($region, $region->specificity) |
1461 | if $region->specificity > $specificity; |
1496 | if $region->specificity > $specificity; |
1462 | } |
1497 | } |
1463 | } |
1498 | } |
1464 | |
1499 | |
… | |
… | |
2341 | my $hp = $exit->stats->hp; |
2376 | my $hp = $exit->stats->hp; |
2342 | my $sp = $exit->stats->sp; |
2377 | my $sp = $exit->stats->sp; |
2343 | |
2378 | |
2344 | $self->enter_link; |
2379 | $self->enter_link; |
2345 | |
2380 | |
|
|
2381 | # if exit is damned, update players death & WoR home-position |
|
|
2382 | $self->contr->savebed ($slaying, $hp, $sp) |
|
|
2383 | if $exit->flag (FLAG_DAMNED); |
|
|
2384 | |
2346 | (async { |
2385 | (async { |
2347 | $self->deactivate_recursive; # just to be sure |
2386 | $self->deactivate_recursive; # just to be sure |
2348 | unless (eval { |
2387 | unless (eval { |
2349 | $self->goto ($slaying, $hp, $sp); |
2388 | $self->goto ($slaying, $hp, $sp); |
2350 | |
2389 | |
… | |
… | |
2391 | sub cf::client::send_msg { |
2430 | sub cf::client::send_msg { |
2392 | my ($self, $color, $type, $msg, @extra) = @_; |
2431 | my ($self, $color, $type, $msg, @extra) = @_; |
2393 | |
2432 | |
2394 | $msg = $self->pl->expand_cfpod ($msg); |
2433 | $msg = $self->pl->expand_cfpod ($msg); |
2395 | |
2434 | |
|
|
2435 | return unless @extra || length $msg; |
|
|
2436 | |
2396 | if ($self->can_msg) { |
2437 | if ($self->can_msg) { |
2397 | $self->send_packet ("msg " . cf::to_json [$color, $type, $msg, @extra]); |
2438 | $self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $type, $msg, @extra])); |
2398 | } else { |
2439 | } else { |
2399 | # replace some tags by gcfclient-compatible ones |
2440 | # replace some tags by gcfclient-compatible ones |
2400 | for ($msg) { |
2441 | for ($msg) { |
2401 | 1 while |
2442 | 1 while |
2402 | s/<b>([^<]*)<\/b>/[b]${1}[\/b]/ |
2443 | s/<b>([^<]*)<\/b>/[b]${1}[\/b]/ |
… | |
… | |
2425 | |
2466 | |
2426 | sub cf::client::ext_event($$%) { |
2467 | sub cf::client::ext_event($$%) { |
2427 | my ($self, $type, %msg) = @_; |
2468 | my ($self, $type, %msg) = @_; |
2428 | |
2469 | |
2429 | $msg{msgtype} = "event_$type"; |
2470 | $msg{msgtype} = "event_$type"; |
2430 | $self->send_packet ("ext " . cf::to_json \%msg); |
2471 | $self->send_packet ("ext " . $self->{json_coder}->encode (\%msg)); |
2431 | } |
2472 | } |
2432 | |
2473 | |
2433 | =item $success = $client->query ($flags, "text", \&cb) |
2474 | =item $success = $client->query ($flags, "text", \&cb) |
2434 | |
2475 | |
2435 | Queues a query to the client, calling the given callback with |
2476 | Queues a query to the client, calling the given callback with |
… | |
… | |
2458 | |
2499 | |
2459 | 1 |
2500 | 1 |
2460 | } |
2501 | } |
2461 | |
2502 | |
2462 | cf::client->attach ( |
2503 | cf::client->attach ( |
|
|
2504 | on_connect => sub { |
|
|
2505 | my ($ns) = @_; |
|
|
2506 | |
|
|
2507 | $ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed; |
|
|
2508 | }, |
2463 | on_reply => sub { |
2509 | on_reply => sub { |
2464 | my ($ns, $msg) = @_; |
2510 | my ($ns, $msg) = @_; |
2465 | |
2511 | |
2466 | # this weird shuffling is so that direct followup queries |
2512 | # this weird shuffling is so that direct followup queries |
2467 | # get handled first |
2513 | # get handled first |
… | |
… | |
2482 | } |
2528 | } |
2483 | }, |
2529 | }, |
2484 | on_exticmd => sub { |
2530 | on_exticmd => sub { |
2485 | my ($ns, $buf) = @_; |
2531 | my ($ns, $buf) = @_; |
2486 | |
2532 | |
2487 | my $msg = eval { from_json $buf }; |
2533 | my $msg = eval { $ns->{json_coder}->decode ($buf) }; |
2488 | |
2534 | |
2489 | if (ref $msg) { |
2535 | if (ref $msg) { |
2490 | if (my $cb = $EXTICMD{$msg->{msgtype}}) { |
2536 | if (my $cb = $EXTICMD{$msg->{msgtype}}) { |
2491 | if (my %reply = $cb->($ns, $msg)) { |
2537 | if (my %reply = $cb->($ns, $msg)) { |
2492 | $reply{msgid} = $msg->{msgid}; |
2538 | $reply{msgid} = $msg->{msgid}; |
2493 | $ns->send ("ext " . cf::to_json \%reply); |
2539 | $ns->send ("ext " . $ns->{json_coder}->encode (\%reply)); |
2494 | } |
2540 | } |
2495 | } |
2541 | } |
2496 | } else { |
2542 | } else { |
2497 | warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n"; |
2543 | warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n"; |
2498 | } |
2544 | } |
… | |
… | |
2555 | |
2601 | |
2556 | =pod |
2602 | =pod |
2557 | |
2603 | |
2558 | The following functions and methods are available within a safe environment: |
2604 | The following functions and methods are available within a safe environment: |
2559 | |
2605 | |
2560 | cf::object contr pay_amount pay_player map |
2606 | cf::object |
|
|
2607 | contr pay_amount pay_player map x y force_find force_add |
|
|
2608 | insert remove |
|
|
2609 | |
2561 | cf::object::player player |
2610 | cf::object::player |
2562 | cf::player peaceful |
2611 | player |
2563 | cf::map trigger |
2612 | |
|
|
2613 | cf::player |
|
|
2614 | peaceful |
|
|
2615 | |
|
|
2616 | cf::map |
|
|
2617 | trigger |
2564 | |
2618 | |
2565 | =cut |
2619 | =cut |
2566 | |
2620 | |
2567 | for ( |
2621 | for ( |
2568 | ["cf::object" => qw(contr pay_amount pay_player map)], |
2622 | ["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y |
|
|
2623 | insert remove)], |
2569 | ["cf::object::player" => qw(player)], |
2624 | ["cf::object::player" => qw(player)], |
2570 | ["cf::player" => qw(peaceful)], |
2625 | ["cf::player" => qw(peaceful)], |
2571 | ["cf::map" => qw(trigger)], |
2626 | ["cf::map" => qw(trigger)], |
2572 | ) { |
2627 | ) { |
2573 | no strict 'refs'; |
2628 | no strict 'refs'; |
… | |
… | |
2665 | { |
2720 | { |
2666 | my $faces = $facedata->{faceinfo}; |
2721 | my $faces = $facedata->{faceinfo}; |
2667 | |
2722 | |
2668 | while (my ($face, $info) = each %$faces) { |
2723 | while (my ($face, $info) = each %$faces) { |
2669 | my $idx = (cf::face::find $face) || cf::face::alloc $face; |
2724 | my $idx = (cf::face::find $face) || cf::face::alloc $face; |
2670 | cf::face::set $idx, $info->{visibility}, $info->{magicmap}; |
2725 | cf::face::set_visibility $idx, $info->{visibility}; |
|
|
2726 | cf::face::set_magicmap $idx, $info->{magicmap}; |
2671 | cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32}; |
2727 | cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32}; |
2672 | cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64}; |
2728 | cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64}; |
2673 | Coro::cede; |
2729 | |
|
|
2730 | cf::cede_to_tick; |
2674 | } |
2731 | } |
2675 | |
2732 | |
2676 | while (my ($face, $info) = each %$faces) { |
2733 | while (my ($face, $info) = each %$faces) { |
2677 | next unless $info->{smooth}; |
2734 | next unless $info->{smooth}; |
2678 | my $idx = cf::face::find $face |
2735 | my $idx = cf::face::find $face |
2679 | or next; |
2736 | or next; |
2680 | if (my $smooth = cf::face::find $info->{smooth}) { |
2737 | if (my $smooth = cf::face::find $info->{smooth}) { |
|
|
2738 | cf::face::set_smooth $idx, $smooth; |
2681 | cf::face::set_smooth $idx, $smooth, $info->{smoothlevel}; |
2739 | cf::face::set_smoothlevel $idx, $info->{smoothlevel}; |
2682 | } else { |
2740 | } else { |
2683 | warn "smooth face '$info->{smooth}' not found for face '$face'"; |
2741 | warn "smooth face '$info->{smooth}' not found for face '$face'"; |
2684 | } |
2742 | } |
2685 | Coro::cede; |
2743 | |
|
|
2744 | cf::cede_to_tick; |
2686 | } |
2745 | } |
2687 | } |
2746 | } |
2688 | |
2747 | |
2689 | { |
2748 | { |
2690 | my $anims = $facedata->{animinfo}; |
2749 | my $anims = $facedata->{animinfo}; |
2691 | |
2750 | |
2692 | while (my ($anim, $info) = each %$anims) { |
2751 | while (my ($anim, $info) = each %$anims) { |
2693 | cf::anim::set $anim, $info->{frames}, $info->{facings}; |
2752 | cf::anim::set $anim, $info->{frames}, $info->{facings}; |
2694 | Coro::cede; |
2753 | cf::cede_to_tick; |
2695 | } |
2754 | } |
2696 | |
2755 | |
2697 | cf::anim::invalidate_all; # d'oh |
2756 | cf::anim::invalidate_all; # d'oh |
|
|
2757 | } |
|
|
2758 | |
|
|
2759 | { |
|
|
2760 | # TODO: for gcfclient pleasure, we should give resources |
|
|
2761 | # that gcfclient doesn't grok a >10000 face index. |
|
|
2762 | my $res = $facedata->{resource}; |
|
|
2763 | my $enc = JSON::XS->new->utf8->canonical; |
|
|
2764 | |
|
|
2765 | while (my ($name, $info) = each %$res) { |
|
|
2766 | my $meta = $enc->encode ({ |
|
|
2767 | name => $name, |
|
|
2768 | type => $info->{type}, |
|
|
2769 | copyright => $info->{copyright}, #TODO# |
|
|
2770 | }); |
|
|
2771 | my $data = pack "(w/a*)*", $meta, $info->{data}; |
|
|
2772 | my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata |
|
|
2773 | |
|
|
2774 | my $idx = (cf::face::find $name) || cf::face::alloc $name; |
|
|
2775 | cf::face::set_type $idx, 1; |
|
|
2776 | cf::face::set_data $idx, 0, $data, $chk; |
|
|
2777 | |
|
|
2778 | cf::cede_to_tick; |
|
|
2779 | } |
2698 | } |
2780 | } |
2699 | |
2781 | |
2700 | 1 |
2782 | 1 |
2701 | } |
2783 | } |
2702 | |
2784 | |
2703 | sub reload_regions { |
2785 | sub reload_regions { |
2704 | load_resource_file "$MAPDIR/regions" |
2786 | load_resource_file "$MAPDIR/regions" |
2705 | or die "unable to load regions file\n"; |
2787 | or die "unable to load regions file\n"; |
|
|
2788 | |
|
|
2789 | for (cf::region::list) { |
|
|
2790 | $_->{match} = qr/$_->{match}/ |
|
|
2791 | if exists $_->{match}; |
|
|
2792 | } |
2706 | } |
2793 | } |
2707 | |
2794 | |
2708 | sub reload_facedata { |
2795 | sub reload_facedata { |
2709 | load_facedata "$DATADIR/facedata" |
2796 | load_facedata "$DATADIR/facedata" |
2710 | or die "unable to load facedata\n"; |
2797 | or die "unable to load facedata\n"; |
2711 | } |
2798 | } |
2712 | |
2799 | |
2713 | sub reload_archetypes { |
2800 | sub reload_archetypes { |
|
|
2801 | load_resource_file "$DATADIR/archetypes" |
|
|
2802 | or die "unable to load archetypes\n"; |
|
|
2803 | #d# NEED to laod twice to resolve forward references |
|
|
2804 | # this really needs to be done in an extra post-pass |
|
|
2805 | # (which needs to be synchronous, so solve it differently) |
2714 | load_resource_file "$DATADIR/archetypes" |
2806 | load_resource_file "$DATADIR/archetypes" |
2715 | or die "unable to load archetypes\n"; |
2807 | or die "unable to load archetypes\n"; |
2716 | } |
2808 | } |
2717 | |
2809 | |
2718 | sub reload_treasures { |
2810 | sub reload_treasures { |