/usr/share/perl5/RDF/Trine/Parser/NQuads.pm is in librdf-trine-perl 1.011-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# -----------------------------------------------------------------------------
=head1 NAME
RDF::Trine::Parser::NQuads - N-Quads Parser
=head1 VERSION
This document describes RDF::Trine::Parser::NQuads version 1.011
=head1 SYNOPSIS
use RDF::Trine::Parser;
my $parser = RDF::Trine::Parser->new( 'nquads' );
$parser->parse_into_model( $base_uri, $data, $model );
=head1 DESCRIPTION
...
=head1 METHODS
Beyond the methods documented below, this class inherits methods from the
L<RDF::Trine::Parser> class.
=over 4
=cut
package RDF::Trine::Parser::NQuads;
use strict;
use warnings;
use utf8;
use base qw(RDF::Trine::Parser::NTriples);
use Carp;
use Encode qw(decode);
use Data::Dumper;
use Log::Log4perl;
use Scalar::Util qw(blessed reftype);
use RDF::Trine qw(literal);
use RDF::Trine::Node;
use RDF::Trine::Statement;
use RDF::Trine::Error qw(:try);
######################################################################
our ($VERSION);
BEGIN {
$VERSION = '1.011';
$RDF::Trine::Parser::parser_names{ 'nquads' } = __PACKAGE__;
$RDF::Trine::Parser::format_uris{ 'http://sw.deri.org/2008/07/n-quads/#n-quads' } = __PACKAGE__;
foreach my $ext (qw(nq)) {
$RDF::Trine::Parser::file_extensions{ $ext } = __PACKAGE__;
}
my $class = __PACKAGE__;
$RDF::Trine::Parser::canonical_media_types{ $class } = 'text/x-nquads';
foreach my $type (qw(text/x-nquads)) {
$RDF::Trine::Parser::media_types{ $type } = __PACKAGE__;
}
}
######################################################################
=item C<< parse_into_model ( $base_uri, $data, $model ) >>
Parses the bytes in C<< $data >>, using the given C<< $base_uri >>. For each RDF triple
or quad parsed, will call C<< $model->add_statement( $statement ) >>.
=cut
sub parse_into_model {
my $proto = shift;
my $self = blessed($proto) ? $proto : $proto->new();
my $uri = shift;
if (blessed($uri) and $uri->isa('RDF::Trine::Node::Resource')) {
$uri = $uri->uri_value;
}
my $input = shift;
my $model = shift;
my %args = @_;
if (my $context = $args{'context'}) {
throw RDF::Trine::Error::ParserError -text => "Cannot pass a context node to N-Quads parse_into_model method";
}
my $handler = sub {
my $st = shift;
$model->add_statement( $st );
};
return $self->parse( $uri, $input, $handler );
}
sub _emit_statement {
my $self = shift;
my $handler = shift;
my $nodes = shift;
my $lineno = shift;
my $st;
if ($self->{canonicalize}) {
if ($nodes->[2]->isa('RDF::Trine::Node::Literal') and $nodes->[2]->has_datatype) {
my $value = $nodes->[2]->literal_value;
my $dt = $nodes->[2]->literal_datatype;
my $canon = RDF::Trine::Node::Literal->canonicalize_literal_value( $value, $dt, 1 );
$nodes->[2] = literal( $canon, undef, $dt );
}
}
if (scalar(@$nodes) == 3) {
$st = RDF::Trine::Statement->new( @$nodes );
} elsif (scalar(@$nodes) == 4) {
$st = RDF::Trine::Statement::Quad->new( @$nodes );
} else {
# warn Dumper($nodes);
throw RDF::Trine::Error::ParserError -text => qq[Not valid N-Quads data at line $lineno];
}
$handler->( $st );
}
1;
__END__
=back
=head1 BUGS
Please report any bugs or feature requests to through the GitHub web interface
at L<https://github.com/kasei/perlrdf/issues>.
=head1 AUTHOR
Gregory Todd Williams C<< <gwilliams@cpan.org> >>
=head1 COPYRIGHT
Copyright (c) 2006-2012 Gregory Todd Williams. This
program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
=cut
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