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package Ninka::SentenceFilter;
use strict;
use warnings;
use File::Basename 'dirname';
use File::Spec::Functions 'catfile';
sub new {
my ($class, %args) = @_;
my $self = bless({}, $class);
die "parameter 'sentences' is mandatory" unless exists $args{sentences};
my $path = dirname(__FILE__);
$self->{verbose} = ($args{verbose} // 0) == 1;
$self->{sentences} = $args{sentences};
$self->{critical_words} = read_critical_words(catfile($path, 'criticalwords.dict'));
return $self;
}
sub execute {
my ($self) = @_;
my $good_sentences = [];
my $bad_sentences = [];
foreach my $sentence (@{$self->{sentences}}) {
chomp $sentence;
next unless $sentence;
my $array_ref = $self->contains_critical_word($sentence) ? $good_sentences : $bad_sentences;
push @$array_ref, $sentence;
}
return ($good_sentences, $bad_sentences);
}
sub read_critical_words {
my ($file) = @_;
my @critical_words = ();
open my $fh, '<', $file or die "can't open file [$file]: $!";
while (my $line = <$fh>) {
chomp $line;
next if $line =~ /^\#/;
$line =~ s/\#.*$//; # remove everything to the end of line
push @critical_words, qr/\b$line\b/i;
}
close $fh;
return \@critical_words;
}
sub contains_critical_word {
my ($self, $sentence) = @_;
my $check = 0;
foreach my $critical_word (@{$self->{critical_words}}) {
if ($sentence =~ $critical_word) {
$check = 1;
last;
}
}
return $check;
}
1;
__END__
=head1 NAME
Ninka::SentenceFilter - Classify input sentences
=head1 DESCRIPTION
Classifies input sentences into two categories, good sentences and bad sentences.
A sentence including a critical word (ex. legal term) is regarded as good.
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2009-2014 Yuki Manabe and Daniel M. German
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This patch is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
=cut
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