/usr/share/perl5/XML/RSS/LibXML/V0_9.pm is in libxml-rss-libxml-perl 0.3105+dfsg-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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#
# Copyright (c) 2005-2007 Daisuke Maki <daisuke@endeworks.jp>
# All rights reserved.
package XML::RSS::LibXML::V0_9;
use strict;
use base qw(XML::RSS::LibXML::ImplBase);
use Carp qw(croak);
use XML::RSS::LibXML::Namespaces qw(NS_RSS09 NS_RDF);
my $format_dates = sub {
my $v = eval {
DateTime::Format::W3CDTF->format_datetime(
DateTime::Format::Mail->parse_datetime($_[0])
);
};
if ($v && ! $@) {
$_[0] = $v;
}
};
my %DcElements = (
'dc:date' => {
candidates => [
{ module => 'dc', element => 'date' },
'pubDate',
'lastBuildDate',
],
callback => $format_dates
},
(map { ("dc:$_" => [ { module => 'dc', element => $_ } ]) }
qw(language rights publisher creator title subject description contributer type format identifier source relation coverage)),
);
my %ImageElements = (
(map { ($_ => [$_]) } qw(title url link)),
%DcElements,
);
my %TextInputElements = (
(map { ($_ => [$_]) } qw(title link description name)),
%DcElements
);
sub definition
{
return {
channel => {
title => '',
description => '',
link => '',
},
image => bless({
title => undef,
url => undef,
link => undef,
}, 'XML::RSS::LibXML::ElementSpec'),
textinput => bless({
title => undef,
description => undef,
name => undef,
link => undef,
}, 'XML::RSS::LibXML::ElementSpec'),
},
}
sub accessor_definition
{
return +{
channel => {
"title" => [1, 40],
"description" => [1, 500],
"link" => [1, 500]
},
image => {
"title" => [1, 40],
"url" => [1, 500],
"link" => [1, 500]
},
item => {
"title" => [1, 100],
"link" => [1, 500]
},
textinput => {
"title" => [1, 40],
"description" => [1, 100],
"name" => [1, 500],
"link" => [1, 500]
}
}
}
sub parse_dom
{
my $self = shift;
my $c = shift;
my $dom = shift;
$c->reset;
$c->version(0.9);
$c->encoding($dom->encoding);
$self->parse_namespaces($c, $dom);
$c->internal('prefix', 'rss09');
# Check if we have non-default RSS namespace
my $namespaces = $c->namespaces;
while (my($prefix, $uri) = each %$namespaces) {
if ($uri eq NS_RSS09 && $prefix ne '#default') {
$c->internal('prefix', $prefix);
last;
}
}
$dom->getDocumentElement()->setNamespace(NS_RSS09, $c->internal('prefix'), 0);
$self->parse_channel($c, $dom);
$self->parse_items($c, $dom);
$self->parse_misc_simple($c, $dom);
}
sub parse_namespaces
{
my ($self, $c, $dom) = @_;
$self->SUPER::parse_namespaces($c, $dom);
my $namespaces = $c->namespaces;
while (my($prefix, $uri) = each %$namespaces) {
if ($uri eq NS_RSS09) {
}
}
}
sub parse_channel
{
my ($self, $c, $dom) = @_;
my $xc = $c->create_xpath_context($c->{namespaces});
my ($root) = $xc->findnodes('/rdf:RDF/rss09:channel', $dom);
my %h = $self->parse_children($c, $root);
foreach my $field (qw(textinput image)) {
delete $h{$field};
# if (my $v = $h{$field}) {
# $c->$field(UNIVERSAL::isa($v, 'XML::RSS::LibXML::MagicElement') ? $v : %$v);
# }
}
$c->channel(%h);
}
sub parse_items
{
my $self = shift;
my $c = shift;
my $dom = shift;
my @items;
my $version = $c->version;
my $xc = $c->create_xpath_context($c->{namespaces});
my $xpath = '/rdf:RDF/rss09:item';
foreach my $item ($xc->findnodes($xpath, $dom)) {
my $i = $self->parse_children($c, $item);
$self->add_item($c, $i);
}
}
sub parse_misc_simple
{
my ($self, $c, $dom) = @_;
my $xc = $c->create_xpath_context($c->{namespaces});
foreach my $node ($xc->findnodes('/rdf:RDF/*[name() != "channel" and name() != "item"]', $dom)) {
my $h = $self->parse_children($c, $node);
my $name = $node->localname;
$name = 'textinput' if $name eq 'textInput';
my $prefix = $node->getPrefix();
if ($prefix) {
$c->{$prefix} ||= {};
$self->store_element($c->{$prefix}, $name, $h);
# XML::RSS requires us to allow access to elements both from
# the prefix and the namespace
$c->{$c->{namespaces}{$prefix}} ||= {};
$self->store_element($c->{$c->{namespaces}{$prefix}}, $name, $h);
} else {
$self->store_element($c, $name, $h);
}
}
}
sub validate_item
{
my $self = shift;
my $c = shift;
my $h = shift;
# make sure we have a title and link
croak "title and link elements are required"
unless (defined $h->{title} && defined $h->{'link'});
# check string lengths
croak "title cannot exceed 100 characters in length"
if (length($h->{title}) > 100);
croak "link cannot exceed 500 characters in length"
if (length($h->{'link'}) > 500);
croak "description cannot exceed 500 characters in length"
if (exists($h->{description})
&& length($h->{description}) > 500);
# make sure there aren't already 15 items
croak "total items cannot exceed 15 " if (@{$c->items} >= 15);
}
sub create_dom
{
my ($self, $c) = @_;
my $dom = $self->SUPER::create_dom($c);
my $xc = $c->create_xpath_context($c->namespaces);
my ($channel) = $xc->findnodes('/rdf:RDF/channel', $dom);
my $root = $dom->getDocumentElement();
if (my $image = $c->image) {
my $inode;
$inode = $dom->createElement('image');
$inode->setAttribute('rdf:resource', $image->{url}) if defined $image->{url};
$channel->appendChild($inode);
$inode = $dom->createElement('image');
$inode->setAttribute('rdf:resource', $image->{url}) if defined $image->{url};
$self->create_element_from_spec($image, $dom, $inode, \%ImageElements);
$self->create_extra_modules($image, $dom, $inode, $c->namespaces);
$root->appendChild($inode);
}
if (my $textinput = $c->textinput) {
my $inode;
$inode = $dom->createElement('textinput');
$inode->setAttribute('rdf:resource', $textinput->{link}) if $textinput->{link};
$channel->appendChild($inode);
$inode = $dom->createElement('textinput');
$inode->setAttribute('rdf:resource', $textinput->{link}) if $textinput->{link};
$self->create_element_from_spec($textinput, $dom, $inode, \%TextInputElements);
$self->create_extra_modules($textinput, $dom, $inode, $c->namespaces);
$root->appendChild($inode);
}
return $dom;
}
sub create_rootelement
{
my $self = shift;
my $c = shift;
my $dom = shift;
my $e = $dom->createElementNS(NS_RSS09, 'RDF');
$dom->setDocumentElement($e);
$e->setNamespace(NS_RDF, 'rdf', 1);
$c->add_module(prefix => 'rdf', uri => NS_RDF);
}
sub create_channel
{
my $self = shift;
my $c = shift;
my $dom = shift;
my $root = $dom->getDocumentElement();
my $channel = $dom->createElement('channel');
$root->appendChild($channel);
my $node;
foreach my $p (qw(title link description)) {
my $text = $c->{channel}{$p};
next unless defined $text;
$node = $dom->createElement($p);
$node->appendText($c->{channel}{$p});
$channel->appendChild($node);
}
}
sub create_items
{
my $self = shift;
my $c = shift;
my $dom = shift;
my $root = $dom->getDocumentElement();
foreach my $i ($c->items) {
my $item = $self->create_item($c, $dom, $i);
$root->appendChild($item);
}
}
sub create_item
{
my $self = shift;
my $c = shift;
my $dom = shift;
my $i = shift;
my $item = $dom->createElement('item');
my $node;
foreach my $e (qw(title link)) {
$node = $dom->createElement($e);
$node->appendText($i->{$e});
$item->addChild($node);
}
return $item;
}
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