[gruntmaster-data.git] / lib / Gruntmaster / Data.pm

use utf8;
package Gruntmaster::Data;

# Created by DBIx::Class::Schema::Loader
# DO NOT MODIFY THE FIRST PART OF THIS FILE

use strict;
use warnings;

use base 'DBIx::Class::Schema';

__PACKAGE__->load_namespaces;


# Created by DBIx::Class::Schema::Loader v0.07039 @ 2014-03-05 13:11:39
# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:dAEmtAexvUaNXLgYz2rNEg

our $VERSION = '5999.000_009';

use Lingua::EN::Inflect qw/PL_N/;
use JSON qw/decode_json/;
use List::Util qw/sum/;
use PerlX::Maybe qw/maybe/;
use Sub::Name qw/subname/;

use constant PROBLEM_PUBLIC_COLUMNS => [qw/id author writer level name owner private statement timeout olimit value/];
use constant USER_PUBLIC_COLUMNS => [qw/id admin name town university level/];
use constant JOBS_PER_PAGE => 10;

sub dynsub{
	our ($name, $sub) = @_;
	no strict 'refs';
	*$name = subname $name => $sub
}

BEGIN {
	for my $rs (qw/contest contest_problem job open problem user/) {
		my $rsname = ucfirst $rs;
		$rsname =~ s/_([a-z])/\u$1/g;
		dynsub PL_N($rs) => sub { $_[0]->resultset($rsname)              };
		dynsub      $rs  => sub { $_[0]->resultset($rsname)->find($_[1]) };
	}
}

use constant LEVEL_VALUES => {
	beginner => 100,
	easy => 250,
	medium => 500,
	hard => 1000,
};

sub calc_score{
	my ($mxscore, $time, $tries, $totaltime) = @_;
	my $score = $mxscore;
	$time = 0 if $time < 0;
	$time = 300 if $time > $totaltime;
	$score = ($totaltime - $time) / $totaltime * $score;
	$score -= $tries / 10 * $mxscore;
	$score = $mxscore * 3 / 10 if $score < $mxscore * 3 / 10;
	int $score + 0.5
}

sub standings {
	my ($self, $ct) = @_;
	$ct &&= $self->contest($ct);

	my @problems = map { $_->problem } $self->contest_problems->search({contest => $ct && $ct->id}, {qw/join problem order_by problem.level/});
	my (%scores, %tries);
	for my $job ($self->jobs->search({contest => $ct && $ct->id}, {order_by => 'id'})) {
		if ($ct) {
			my $open = $self->opens->find($ct->id, $job->problem->id, $job->owner->id);
			my $time = $job->date - ($open ? $open->time : $ct->start);
			next if $time < 0;
			my $value = $job->problem->value // LEVEL_VALUES->{$job->problem->level};
			my $factor = $job->result ? 0 : 1;
			$factor = $1 / 100 if $job->result_text =~ /^(\d+ )/;
			$scores{$job->owner->id}{$job->problem->id} = int ($factor * calc_score ($value, $time, $tries{$job->owner->id}{$job->problem->id}++, $ct->stop - $ct->start));
		} else {
			no warnings 'numeric';
			$scores{$job->owner->id}{$job->problem->id} = 0 + $job->result_text || ($job->result ? 0 : 100)
		}
	}

	my @st = sort { $b->{score} <=> $a->{score} or $a->{user}->id cmp $b->{user}->id} map {
		my $user = $_;
		+{
			user => $self->user($user),
			score => sum (values %{$scores{$user}}),
			scores => [map { $scores{$user}{$_->id} // '-'} @problems],
			problems => $ct,
		}
	} keys %scores;

	$st[0]->{rank} = 1;
	$st[$_]->{rank} = $st[$_ - 1]->{rank} + ($st[$_]->{score} < $st[$_ - 1]->{score}) for 1 .. $#st;
	@st
}

sub user_list {
	my $rs = $_[0]->users->search(undef, {order_by => 'name', columns => USER_PUBLIC_COLUMNS});
	[ map +{ $_->get_columns }, $rs->all ]
}

sub user_entry {
	my ($self, $id) = @_;
	+{ $self->users->find($id, {columns => USER_PUBLIC_COLUMNS})->get_columns }
}

sub problem_list {
	my ($self, %args) = @_;
	my $rs = $self->problems->search(undef, {order_by => 'me.name', columns => PROBLEM_PUBLIC_COLUMNS, prefetch => 'owner'});
	$rs = $rs->search({-or => ['contest_problems.contest' => undef, 'contest.stop' => {'<=', time}], 'me.private' => 0}, {join => {'contest_problems' => 'contest'}, distinct => 1}) unless $args{contest};
	$rs = $rs->search({'contest_problems.contest' => $args{contest}}, {join => 'contest_problems'}) if $args{contest};
	$rs = $rs->search({'me.owner' => $args{owner}}) if $args{owner};
	my %params;
	$params{contest} = $args{contest} if $args{contest};
	for ($rs->all) {
		$params{$_->level} //= [];
		push @{$params{$_->level}}, {$_->get_columns, owner_name => $_->owner->name} ;
	}
	\%params
}

sub problem_entry {
	my ($self, $id, $contest, $user) = @_;
	my $pb = $self->problems->find($id, {columns => PROBLEM_PUBLIC_COLUMNS, prefetch => 'owner'});
	my $running = $contest && $self->contest($contest)->is_running;
	eval {
		$self->opens->create({
			contest => $contest,
			problem => $id,
			owner => $user,
			time => time,
		})
	} if $running;
	+{ $pb->get_columns, owner_name => $pb->owner->name, cansubmit => $contest ? $running : 1 }
}

sub contest_list {
	my ($self, %args) = @_;
	my $rs = $self->contests->search(undef, {order_by => {-desc => 'start'}, prefetch => 'owner'});
	$rs = $rs->search({owner => $args{owner}}) if $args{owner};
	my %params;
	for ($rs->all) {
		my $state = $_->is_pending ? 'pending' : $_->is_running ? 'running' : 'finished';
		$params{$state} //= [];
		push @{$params{$state}}, { $_->get_columns, started => !$_->is_pending, owner_name => $_->owner->name };
	}
	\%params
}

sub contest_entry {
	my ($self, $id) = @_;
	my $ct = $self->contest($id);
	+{ $ct->get_columns, started => !$ct->is_pending, owner_name => $ct->owner->name }
}

sub job_list {
	my ($self, %args) = @_;
	$args{page} //= 1;
	my $rs = $self->jobs->search(undef, {order_by => {-desc => 'me.id'}, prefetch => ['problem', 'owner'], rows => JOBS_PER_PAGE, page => $args{page}});
	$rs = $rs->search({'me.owner' => $args{owner}})   if $args{owner};
	$rs = $rs->search({contest    => $args{contest}}) if $args{contest};
	$rs = $rs->search({problem    => $args{problem}}) if $args{problem};
	return {
		log => [map {
			my %params = $_->get_columns;
			$params{owner_name}   = $_->owner->name;
			$params{problem_name} = $_->problem->name;
			$params{results} &&= decode_json $params{results};
			$params{size}      = length $params{source};
			delete $params{source};
			\%params
		} $rs->all],
		current_page => $rs->pager->current_page,
		maybe previous_page => $rs->pager->previous_page,
		maybe next_page => $rs->pager->next_page,
		maybe last_page => $rs->pager->last_page,
	}
}

sub job_entry {
	my ($self, $id) = @_;
	my $job = $self->jobs->find($id, {prefetch => ['problem', 'owner']});
	my %params = $job->get_columns;
	$params{owner_name}   = $job->owner->name;
	$params{problem_name} = $job->problem->name;
	$params{results} &&= decode_json $params{results};
	$params{size}      = length $params{source};
	delete $params{source};
	\%params
}

1;

__END__

=encoding utf-8

=head1 NAME

Gruntmaster::Data - Gruntmaster 6000 Online Judge -- database interface and tools

=head1 SYNOPSIS

  my $db = Gruntmaster::Data->connect('dbi:Pg:');

  my $problem = $db->problem('my_problem');
  $problem->update({timeout => 2.5}); # Set time limit to 2.5 seconds
  $problem->rerun; # And rerun all jobs for this problem

  # ...

  my $contest = $db->contests->create({ # Create a new contest
    id => 'my_contest',
    name => 'My Awesome Contest',
    start => time + 100,
    end => time + 1900,
  });
  $db->contest_problems->create({ # Add a problem to the contest
    contest => 'my_contest',
    problem => 'my_problem',
  });

  say 'The contest has not started yet' if $contest->is_pending;

  # ...

  my @jobs = $db->jobs->search({contest => 'my_contest', owner => 'MGV'})->all;
  $_->rerun for @jobs; # Rerun all jobs sent by MGV in my_contest

=head1 DESCRIPTION

Gruntmaster::Data is the interface to the Gruntmaster 6000 database. Read the L<DBIx::Class> documentation for usage information.

In addition to the typical DBIx::Class::Schema methods, this module contains several convenience methods:

=over

=item contests

Equivalent to C<< $schema->resultset('Contest') >>

=item contest_problems

Equivalent to C<< $schema->resultset('ContestProblem') >>

=item jobs

Equivalent to C<< $schema->resultset('Job') >>

=item problems

Equivalent to C<< $schema->resultset('Problem') >>

=item users

Equivalent to C<< $schema->resultset('User') >>

=item contest($id)

Equivalent to C<< $schema->resultset('Contest')->find($id) >>

=item job($id)

Equivalent to C<< $schema->resultset('Job')->find($id) >>

=item problem($id)

Equivalent to C<< $schema->resultset('Problem')->find($id) >>

=item user($id)

Equivalent to C<< $schema->resultset('User')->find($id) >>

=item user_list

Returns a list of users as an arrayref containing hashrefs.

=item user_entry($id)

Returns a hashref with information about the user $id.

=item problem_list([%args])

Returns a list of problems grouped by level. A hashref with levels as keys.

Takes the following arguments:

=over

=item owner

Only show problems owned by this user

=item contest

Only show problems in this contest

=back

=item problem_entry($id, [$contest, $user])

Returns a hashref with information about the problem $id. If $contest and $user are present, problem open data is updated.

=item contest_list([%args])

Returns a list of contests grouped by state. A hashref with the following keys:

=over

=item pending

An arrayref of hashrefs representing pending contests

=item running

An arrayref of hashrefs representing running contests

=item finished

An arrayref of hashrefs representing finished contests

=back

Takes the following arguments:

=over

=item owner

Only show contests owned by this user.

=back

=item contest_entry($id)

Returns a hashref with information about the contest $id.

=item job_list([%args])

Returns a list of jobs as an arrayref containing hashrefs. Takes the following arguments:

=over

=item owner

Only show jobs submitted by this user.

=item contest

Only show jobs submitted in this contest.

=item problem

Only show jobs submitted for this problem.

=item page

Show this page of results. Defaults to 1. Pages have 10 entries, and the first page has the most recent jobs.

=back

=item job_entry($id)

Returns a hashref with information about the job $id.

=back

=head1 AUTHOR

Marius Gavrilescu E<lt>marius@ieval.roE<gt>

=head1 COPYRIGHT AND LICENSE

Copyright (C) 2014 by Marius Gavrilescu

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.18.1 or,
at your option, any later version of Perl 5 you may have available.


=cut
Commit	Line	Data
	1	use utf8;
	2	package Gruntmaster::Data;
	3
	4	# Created by DBIx::Class::Schema::Loader
	5	# DO NOT MODIFY THE FIRST PART OF THIS FILE
	6
	7	use strict;
	8	use warnings;
	9
	10	use base 'DBIx::Class::Schema';
	11
	12	__PACKAGE__->load_namespaces;
	13
	14
	15	# Created by DBIx::Class::Schema::Loader v0.07039 @ 2014-03-05 13:11:39
	16	# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:dAEmtAexvUaNXLgYz2rNEg
	17
	18	our $VERSION = '5999.000_009';
	19
	20	use Lingua::EN::Inflect qw/PL_N/;
	21	use JSON qw/decode_json/;
	22	use List::Util qw/sum/;
	23	use PerlX::Maybe qw/maybe/;
	24	use Sub::Name qw/subname/;
	25
	26	use constant PROBLEM_PUBLIC_COLUMNS => [qw/id author writer level name owner private statement timeout olimit value/];
	27	use constant USER_PUBLIC_COLUMNS => [qw/id admin name town university level/];
	28	use constant JOBS_PER_PAGE => 10;
	29
	30	sub dynsub{
	31	our ($name, $sub) = @_;
	32	no strict 'refs';
	33	*$name = subname $name => $sub
	34	}
	35
	36	BEGIN {
	37	for my $rs (qw/contest contest_problem job open problem user/) {
	38	my $rsname = ucfirst $rs;
	39	$rsname =~ s/_([a-z])/\u$1/g;
	40	dynsub PL_N($rs) => sub { $_[0]->resultset($rsname) };
	41	dynsub $rs => sub { $_[0]->resultset($rsname)->find($_[1]) };
	42	}
	43	}
	44
	45	use constant LEVEL_VALUES => {
	46	beginner => 100,
	47	easy => 250,
	48	medium => 500,
	49	hard => 1000,
	50	};
	51
	52	sub calc_score{
	53	my ($mxscore, $time, $tries, $totaltime) = @_;
	54	my $score = $mxscore;
	55	$time = 0 if $time < 0;
	56	$time = 300 if $time > $totaltime;
	57	$score = ($totaltime - $time) / $totaltime * $score;
	58	$score -= $tries / 10 * $mxscore;
	59	$score = $mxscore * 3 / 10 if $score < $mxscore * 3 / 10;
	60	int $score + 0.5
	61	}
	62
	63	sub standings {
	64	my ($self, $ct) = @_;
	65	$ct &&= $self->contest($ct);
	66
	67	my @problems = map { $_->problem } $self->contest_problems->search({contest => $ct && $ct->id}, {qw/join problem order_by problem.level/});
	68	my (%scores, %tries);
	69	for my $job ($self->jobs->search({contest => $ct && $ct->id}, {order_by => 'id'})) {
	70	if ($ct) {
	71	my $open = $self->opens->find($ct->id, $job->problem->id, $job->owner->id);
	72	my $time = $job->date - ($open ? $open->time : $ct->start);
	73	next if $time < 0;
	74	my $value = $job->problem->value // LEVEL_VALUES->{$job->problem->level};
	75	my $factor = $job->result ? 0 : 1;
	76	$factor = $1 / 100 if $job->result_text =~ /^(\d+ )/;
	77	$scores{$job->owner->id}{$job->problem->id} = int ($factor * calc_score ($value, $time, $tries{$job->owner->id}{$job->problem->id}++, $ct->stop - $ct->start));
	78	} else {
	79	no warnings 'numeric';
	80	$scores{$job->owner->id}{$job->problem->id} = 0 + $job->result_text \|\| ($job->result ? 0 : 100)
	81	}
	82	}
	83
	84	my @st = sort { $b->{score} <=> $a->{score} or $a->{user}->id cmp $b->{user}->id} map {
	85	my $user = $_;
	86	+{
	87	user => $self->user($user),
	88	score => sum (values %{$scores{$user}}),
	89	scores => [map { $scores{$user}{$_->id} // '-'} @problems],
	90	problems => $ct,
	91	}
	92	} keys %scores;
	93
	94	$st[0]->{rank} = 1;
	95	$st[$_]->{rank} = $st[$_ - 1]->{rank} + ($st[$_]->{score} < $st[$_ - 1]->{score}) for 1 .. $#st;
	96	@st
	97	}
	98
	99	sub user_list {
	100	my $rs = $_[0]->users->search(undef, {order_by => 'name', columns => USER_PUBLIC_COLUMNS});
	101	[ map +{ $_->get_columns }, $rs->all ]
	102	}
	103
	104	sub user_entry {
	105	my ($self, $id) = @_;
	106	+{ $self->users->find($id, {columns => USER_PUBLIC_COLUMNS})->get_columns }
	107	}
	108
	109	sub problem_list {
	110	my ($self, %args) = @_;
	111	my $rs = $self->problems->search(undef, {order_by => 'me.name', columns => PROBLEM_PUBLIC_COLUMNS, prefetch => 'owner'});
	112	$rs = $rs->search({-or => ['contest_problems.contest' => undef, 'contest.stop' => {'<=', time}], 'me.private' => 0}, {join => {'contest_problems' => 'contest'}, distinct => 1}) unless $args{contest};
	113	$rs = $rs->search({'contest_problems.contest' => $args{contest}}, {join => 'contest_problems'}) if $args{contest};
	114	$rs = $rs->search({'me.owner' => $args{owner}}) if $args{owner};
	115	my %params;
	116	$params{contest} = $args{contest} if $args{contest};
	117	for ($rs->all) {
	118	$params{$_->level} //= [];
	119	push @{$params{$_->level}}, {$_->get_columns, owner_name => $_->owner->name} ;
	120	}
	121	\%params
	122	}
	123
	124	sub problem_entry {
	125	my ($self, $id, $contest, $user) = @_;
	126	my $pb = $self->problems->find($id, {columns => PROBLEM_PUBLIC_COLUMNS, prefetch => 'owner'});
	127	my $running = $contest && $self->contest($contest)->is_running;
	128	eval {
	129	$self->opens->create({
	130	contest => $contest,
	131	problem => $id,
	132	owner => $user,
	133	time => time,
	134	})
	135	} if $running;
	136	+{ $pb->get_columns, owner_name => $pb->owner->name, cansubmit => $contest ? $running : 1 }
	137	}
	138
	139	sub contest_list {
	140	my ($self, %args) = @_;
	141	my $rs = $self->contests->search(undef, {order_by => {-desc => 'start'}, prefetch => 'owner'});
	142	$rs = $rs->search({owner => $args{owner}}) if $args{owner};
	143	my %params;
	144	for ($rs->all) {
	145	my $state = $_->is_pending ? 'pending' : $_->is_running ? 'running' : 'finished';
	146	$params{$state} //= [];
	147	push @{$params{$state}}, { $_->get_columns, started => !$_->is_pending, owner_name => $_->owner->name };
	148	}
	149	\%params
	150	}
	151
	152	sub contest_entry {
	153	my ($self, $id) = @_;
	154	my $ct = $self->contest($id);
	155	+{ $ct->get_columns, started => !$ct->is_pending, owner_name => $ct->owner->name }
	156	}
	157
	158	sub job_list {
	159	my ($self, %args) = @_;
	160	$args{page} //= 1;
	161	my $rs = $self->jobs->search(undef, {order_by => {-desc => 'me.id'}, prefetch => ['problem', 'owner'], rows => JOBS_PER_PAGE, page => $args{page}});
	162	$rs = $rs->search({'me.owner' => $args{owner}}) if $args{owner};
	163	$rs = $rs->search({contest => $args{contest}}) if $args{contest};
	164	$rs = $rs->search({problem => $args{problem}}) if $args{problem};
	165	return {
	166	log => [map {
	167	my %params = $_->get_columns;
	168	$params{owner_name} = $_->owner->name;
	169	$params{problem_name} = $_->problem->name;
	170	$params{results} &&= decode_json $params{results};
	171	$params{size} = length $params{source};
	172	delete $params{source};
	173	\%params
	174	} $rs->all],
	175	current_page => $rs->pager->current_page,
	176	maybe previous_page => $rs->pager->previous_page,
	177	maybe next_page => $rs->pager->next_page,
	178	maybe last_page => $rs->pager->last_page,
	179	}
	180	}
	181
	182	sub job_entry {
	183	my ($self, $id) = @_;
	184	my $job = $self->jobs->find($id, {prefetch => ['problem', 'owner']});
	185	my %params = $job->get_columns;
	186	$params{owner_name} = $job->owner->name;
	187	$params{problem_name} = $job->problem->name;
	188	$params{results} &&= decode_json $params{results};
	189	$params{size} = length $params{source};
	190	delete $params{source};
	191	\%params
	192	}
	193
	194	1;
	195
	196	__END__
	197
	198	=encoding utf-8
	199
	200	=head1 NAME
	201
	202	Gruntmaster::Data - Gruntmaster 6000 Online Judge -- database interface and tools
	203
	204	=head1 SYNOPSIS
	205
	206	my $db = Gruntmaster::Data->connect('dbi:Pg:');
	207
	208	my $problem = $db->problem('my_problem');
	209	$problem->update({timeout => 2.5}); # Set time limit to 2.5 seconds
	210	$problem->rerun; # And rerun all jobs for this problem
	211
	212	# ...
	213
	214	my $contest = $db->contests->create({ # Create a new contest
	215	id => 'my_contest',
	216	name => 'My Awesome Contest',
	217	start => time + 100,
	218	end => time + 1900,
	219	});
	220	$db->contest_problems->create({ # Add a problem to the contest
	221	contest => 'my_contest',
	222	problem => 'my_problem',
	223	});
	224
	225	say 'The contest has not started yet' if $contest->is_pending;
	226
	227	# ...
	228
	229	my @jobs = $db->jobs->search({contest => 'my_contest', owner => 'MGV'})->all;
	230	$_->rerun for @jobs; # Rerun all jobs sent by MGV in my_contest
	231
	232	=head1 DESCRIPTION
	233
	234	Gruntmaster::Data is the interface to the Gruntmaster 6000 database. Read the L<DBIx::Class> documentation for usage information.
	235
	236	In addition to the typical DBIx::Class::Schema methods, this module contains several convenience methods:
	237
	238	=over
	239
	240	=item contests
	241
	242	Equivalent to C<< $schema->resultset('Contest') >>
	243
	244	=item contest_problems
	245
	246	Equivalent to C<< $schema->resultset('ContestProblem') >>
	247
	248	=item jobs
	249
	250	Equivalent to C<< $schema->resultset('Job') >>
	251
	252	=item problems
	253
	254	Equivalent to C<< $schema->resultset('Problem') >>
	255
	256	=item users
	257
	258	Equivalent to C<< $schema->resultset('User') >>
	259
	260	=item contest($id)
	261
	262	Equivalent to C<< $schema->resultset('Contest')->find($id) >>
	263
	264	=item job($id)
	265
	266	Equivalent to C<< $schema->resultset('Job')->find($id) >>
	267
	268	=item problem($id)
	269
	270	Equivalent to C<< $schema->resultset('Problem')->find($id) >>
	271
	272	=item user($id)
	273
	274	Equivalent to C<< $schema->resultset('User')->find($id) >>
	275
	276	=item user_list
	277
	278	Returns a list of users as an arrayref containing hashrefs.
	279
	280	=item user_entry($id)
	281
	282	Returns a hashref with information about the user $id.
	283
	284	=item problem_list([%args])
	285
	286	Returns a list of problems grouped by level. A hashref with levels as keys.
	287
	288	Takes the following arguments:
	289
	290	=over
	291
	292	=item owner
	293
	294	Only show problems owned by this user
	295
	296	=item contest
	297
	298	Only show problems in this contest
	299
	300	=back
	301
	302	=item problem_entry($id, [$contest, $user])
	303
	304	Returns a hashref with information about the problem $id. If $contest and $user are present, problem open data is updated.
	305
	306	=item contest_list([%args])
	307
	308	Returns a list of contests grouped by state. A hashref with the following keys:
	309
	310	=over
	311
	312	=item pending
	313
	314	An arrayref of hashrefs representing pending contests
	315
	316	=item running
	317
	318	An arrayref of hashrefs representing running contests
	319
	320	=item finished
	321
	322	An arrayref of hashrefs representing finished contests
	323
	324	=back
	325
	326	Takes the following arguments:
	327
	328	=over
	329
	330	=item owner
	331
	332	Only show contests owned by this user.
	333
	334	=back
	335
	336	=item contest_entry($id)
	337
	338	Returns a hashref with information about the contest $id.
	339
	340	=item job_list([%args])
	341
	342	Returns a list of jobs as an arrayref containing hashrefs. Takes the following arguments:
	343
	344	=over
	345
	346	=item owner
	347
	348	Only show jobs submitted by this user.
	349
	350	=item contest
	351
	352	Only show jobs submitted in this contest.
	353
	354	=item problem
	355
	356	Only show jobs submitted for this problem.
	357
	358	=item page
	359
	360	Show this page of results. Defaults to 1. Pages have 10 entries, and the first page has the most recent jobs.
	361
	362	=back
	363
	364	=item job_entry($id)
	365
	366	Returns a hashref with information about the job $id.
	367
	368	=back
	369
	370	=head1 AUTHOR
	371
	372	Marius Gavrilescu E<lt>marius@ieval.roE<gt>
	373
	374	=head1 COPYRIGHT AND LICENSE
	375
	376	Copyright (C) 2014 by Marius Gavrilescu
	377
	378	This library is free software; you can redistribute it and/or modify
	379	it under the same terms as Perl itself, either Perl version 5.18.1 or,
	380	at your option, any later version of Perl 5 you may have available.
	381
	382
	383	=cut