/usr/share/perl5/Attean/Literal.pm is in libattean-perl 0.017-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 | use v5.14;
use warnings;
=head1 NAME
Attean::Literal - RDF Literals
=head1 VERSION
This document describes Attean::Literal version 0.017
=head1 SYNOPSIS
use v5.14;
use Attean;
my $langterm = Attean::Literal->new(value => 'foo', language => 'en-US');
$langterm->ntriples_string; # "foo"@en-US
my $typeterm = Attean::Literal->new(value => '123', datatype => 'http://www.w3.org/2001/XMLSchema#integer');
$langterm->ntriples_string; # "123"^^<http://www.w3.org/2001/XMLSchema#integer>
=head1 DESCRIPTION
The Attean::Literal class represents RDF literals.
It conforms to the L<Attean::API::Literal|Attean::API::Term> role.
=head1 ATTRIBUTES
The following attributes exist:
=over 4
=item C<< value >>
=item C<< language >>
=item C<< datatype >>
=back
=head1 METHODS
=over 4
=item C<< has_language >>
Returns true if the literal has a language tag, false otherwise.
=cut
package Attean::Literal 0.017 {
use Moo;
use Types::Standard qw(Str Maybe InstanceOf);
use Attean::API::Term;
use IRI;
use Sub::Install;
use Sub::Util qw(set_subname);
use Scalar::Util qw(blessed);
use namespace::clean;
my $XSD_STRING = IRI->new(value => 'http://www.w3.org/2001/XMLSchema#string');
has 'value' => (is => 'ro', isa => Str, required => 1);
has 'language' => (is => 'ro', isa => Maybe[Str], predicate => 'has_language');
has 'datatype' => (
is => 'ro',
isa => InstanceOf['Attean::IRI'],
required => 1,
coerce => sub {
my $dt = shift;
if (blessed($dt) and $dt->isa('Attean::IRI')) {
return $dt;
} else {
return blessed($dt) ? Attean::IRI->new($dt->as_string) : Attean::IRI->new($dt)
}
},
default => sub { $XSD_STRING }
);
has 'ntriples_string' => (is => 'ro', isa => Str, lazy => 1, builder => '_ntriples_string');
with 'Attean::API::Literal';
around BUILDARGS => sub {
my $orig = shift;
my $class = shift;
return $class->$orig(@_) if (scalar(@_) == 1 and ref($_[0]) eq "HASH");
if (scalar(@_) == 1) {
my $dt = IRI->new('http://www.w3.org/2001/XMLSchema#string');
return $class->$orig(value => shift, datatype => $dt);
}
return $class->$orig(@_);
};
around 'datatype' => sub {
my $orig = shift;
my $self = shift;
if ($self->has_language) {
return Attean::IRI->new(value => 'http://www.w3.org/2001/XMLSchema#langString');
} else {
return $self->$orig(@_);
}
};
sub _ntriples_string {
my $self = shift;
my $value = $self->value;
$value =~ s/\\/\\\\/g;
$value =~ s/\n/\\n/g;
$value =~ s/\r/\\r/g;
$value =~ s/"/\\"/g;
if ($self->has_language) {
return sprintf('"%s"@%s', $value, $self->language);
} else {
my $dt = $self->datatype->as_string;
if ($dt eq 'http://www.w3.org/2001/XMLSchema#string') {
return sprintf('"%s"', $value);
} else {
return sprintf('"%s"^^<%s>', $value, $dt);
}
}
}
=item C<< true >>
The xsd:true term.
=cut
sub true {
state $v = Attean::Literal->new( value => 'true', datatype => 'http://www.w3.org/2001/XMLSchema#boolean' );
return $v;
}
=item C<< false >>
The xsd:false term.
=cut
sub false {
state $v = Attean::Literal->new( value => 'false', datatype => 'http://www.w3.org/2001/XMLSchema#boolean' );
return $v;
}
{
for my $method (qw(integer decimal float double)) {
my $code = sub {
my $class = shift;
return $class->new( value => shift, datatype => "http://www.w3.org/2001/XMLSchema#$method" );
};
Sub::Install::install_sub({
code => set_subname("${method}", $code),
as => "${method}"
});
}
}
}
1;
__END__
=back
=head1 BUGS
Please report any bugs or feature requests to through the GitHub web interface
at L<https://github.com/kasei/attean/issues>.
=head1 SEE ALSO
L<http://www.perlrdf.org/>
=head1 AUTHOR
Gregory Todd Williams C<< <gwilliams@cpan.org> >>
=head1 COPYRIGHT
Copyright (c) 2014--2016 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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