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package Search::Estraier::Document; |
package Search::Estraier::Document; |
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use Carp qw/croak confess/; |
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=head1 Search::Estraier::Document |
=head1 Search::Estraier::Document |
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This class implements Document which is collection of attributes |
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(key=value), vectors (also key value) display text and hidden text. |
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Document for HyperEstraier |
Document for HyperEstraier |
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=head2 new |
=head2 new |
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Create new document, empty or from draft. |
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my $doc = new Search::HyperEstraier::Document; |
my $doc = new Search::HyperEstraier::Document; |
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my $doc2 = new Search::HyperEstraier::Document( $draft ); |
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=cut |
=cut |
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sub new { |
sub new { |
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my $class = shift; |
my $class = shift; |
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my $self = {@_}; |
my $self = {}; |
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bless($self, $class); |
bless($self, $class); |
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$self->{id} = -1; |
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my $draft = shift; |
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if ($draft) { |
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my $in_text = 0; |
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foreach my $line (split(/\n/, $draft)) { |
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if ($in_text) { |
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if ($line =~ /^\t/) { |
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push @{ $self->{htexts} }, substr($line, 1); |
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} else { |
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push @{ $self->{dtexts} }, $line; |
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} |
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next; |
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} |
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if ($line =~ m/^%VECTOR\t(.+)$/) { |
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my @fields = split(/\t/, $1); |
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for my $i ( 0 .. ($#fields - 1) ) { |
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$self->{kwords}->{ $fields[ $i ] } = $fields[ $i + 1 ]; |
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$i++; |
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} |
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next; |
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} elsif ($line =~ m/^%/) { |
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# What is this? comment? |
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#warn "$line\n"; |
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next; |
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} elsif ($line =~ m/^$/) { |
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$in_text = 1; |
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next; |
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} elsif ($line =~ m/^(.+)=(.+)$/) { |
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$self->{attrs}->{ $1 } = $2; |
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next; |
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} |
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warn "draft ignored: $line\n"; |
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} |
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} |
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$self ? return $self : return undef; |
$self ? return $self : return undef; |
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} |
} |
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=head2 add_attr |
=head2 add_attr |
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Add an attribute. |
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$doc->add_attr( name => 'value' ); |
$doc->add_attr( name => 'value' ); |
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Delete attribute using |
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$doc->add_attr( name => undef ); |
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=cut |
=cut |
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sub add_attr { |
sub add_attr { |
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my $attrs = {@_}; |
my $attrs = {@_}; |
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while (my ($name, $value) = each %{ $attrs }) { |
while (my ($name, $value) = each %{ $attrs }) { |
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$name =~ s/\s\s+/ /gs; |
if (! defined($value)) { |
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$value =~ s/\s\s+/ /gs; |
delete( $self->{attrs}->{_s($name)} ); |
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push @{$self->{$name}}, $value; |
} else { |
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$self->{attrs}->{_s($name)} = _s($value); |
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} |
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} |
} |
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return 1; |
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} |
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=head2 add_text |
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Add a sentence of text. |
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$doc->add_text('this is example text to display'); |
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=cut |
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sub add_text { |
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my $self = shift; |
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my $text = shift; |
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return unless defined($text); |
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push @{ $self->{dtexts} }, _s($text); |
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} |
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=head2 add_hidden_text |
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Add a hidden sentence. |
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$doc->add_hidden_text('this is example text just for search'); |
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=cut |
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sub add_hidden_text { |
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my $self = shift; |
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my $text = shift; |
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return unless defined($text); |
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push @{ $self->{htexts} }, _s($text); |
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} |
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=head2 id |
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Get the ID number of document. If the object has never been registred, C<-1> is returned. |
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print $doc->id; |
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=cut |
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sub id { |
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my $self = shift; |
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return $self->{id}; |
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} |
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=head2 attr_names |
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Returns array with attribute names from document object. |
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my @attrs = $doc->attr_names; |
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=cut |
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sub attr_names { |
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my $self = shift; |
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croak "attr_names return array, not scalar" if (! wantarray); |
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return sort keys %{ $self->{attrs} }; |
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} |
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=head2 attr |
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Returns value of an attribute. |
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my $value = $doc->attr( 'attribute' ); |
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=cut |
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sub attr { |
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my $self = shift; |
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my $name = shift; |
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return $self->{'attrs'}->{ $name }; |
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} |
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=head2 texts |
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Returns array with text sentences. |
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my @texts = $doc->texts; |
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=cut |
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sub texts { |
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my $self = shift; |
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confess "texts return array, not scalar" if (! wantarray); |
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return @{ $self->{dtexts} }; |
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} |
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=head2 cat_texts |
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Return whole text as single scalar. |
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my $text = $doc->cat_texts; |
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=cut |
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sub cat_texts { |
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my $self = shift; |
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return join(' ',@{ $self->{dtexts} }); |
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} |
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=head2 dump_draft |
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Dump draft data from document object. |
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print $doc->dump_draft; |
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=cut |
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sub dump_draft { |
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my $self = shift; |
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my $draft; |
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foreach my $attr_name (sort keys %{ $self->{attrs} }) { |
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$draft .= $attr_name . '=' . $self->{attrs}->{$attr_name} . "\n"; |
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} |
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if ($self->{kwords}) { |
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$draft .= '%%VECTOR'; |
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while (my ($key, $value) = each %{ $self->{kwords} }) { |
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$draft .= "\t$key\t$value"; |
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} |
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$draft .= "\n"; |
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} |
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$draft .= "\n"; |
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$draft .= join("\n", @{ $self->{dtexts} }) . "\n"; |
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$draft .= "\t" . join("\n\t", @{ $self->{htexts} }) . "\n"; |
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return $draft; |
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} |
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=head2 delete |
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Empty document object |
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$doc->delete; |
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=cut |
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sub delete { |
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my $self = shift; |
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foreach my $data (qw/attrs dtexts stexts kwords/) { |
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delete($self->{$data}); |
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} |
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$self->{id} = -1; |
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return 1; |
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} |
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=head2 _s |
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Remove multiple whitespaces from string, as well as whitespaces at beginning or end |
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my $text = _s(" this is a text "); |
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$text = 'this is a text'; |
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=cut |
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sub _s { |
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my $text = shift || return; |
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$text =~ s/\s\s+/ /gs; |
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$text =~ s/^\s+//; |
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$text =~ s/\s+$//; |
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return $text; |
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} |
} |
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