/usr/share/perl5/XML/Atom/Content.pm is in libxml-atom-perl 0.41-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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package XML::Atom::Content;
use strict;
use base qw( XML::Atom::Base );
__PACKAGE__->mk_attr_accessors(qw( type mode ));
__PACKAGE__->mk_xml_attr_accessors(qw( lang base ));
use Encode;
use XML::Atom;
use MIME::Base64 qw( encode_base64 decode_base64 );
sub element_name { 'content' }
sub init {
my $content = shift;
my %param = @_ == 1 ? (Body => $_[0]) : @_;
$content->SUPER::init(%param);
if ($param{Body}) {
$content->body($param{Body});
}
if ($param{Type}) {
$content->type($param{Type});
}
return $content;
}
sub body {
my $content = shift;
my $elem = $content->elem;
if (@_) {
my $data = shift;
if (LIBXML) {
$elem->removeChildNodes;
} else {
$elem->removeChild($_) for $elem->getChildNodes;
}
if (!_is_printable($data)) {
Encode::_utf8_off($data);
if (LIBXML) {
$elem->appendChild(XML::LibXML::Text->new(encode_base64($data, '')));
} else {
$elem->appendChild(XML::XPath::Node::Text->new(encode_base64($data, '')));
}
if ($content->version == 0.3) {
$content->mode('base64');
}
} else {
my $copy = '<div xmlns="http://www.w3.org/1999/xhtml">' .
$data .
'</div>';
my $node;
eval {
if (LIBXML) {
my $parser = XML::Atom->libxml_parser;
my $tree = $parser->parse_string($copy);
$node = $tree->getDocumentElement;
} else {
my $parser = XML::Atom->expat_parser;
my $xp = XML::XPath->new(xml => $copy, parser => $parser);
$node = (($xp->find('/')->get_nodelist)[0]->getChildNodes)[0]
if $xp;
}
};
if (!$@ && $node) {
$elem->appendChild($node);
if ($content->version == 0.3) {
$content->mode('xml');
} else {
$content->type('xhtml');
}
} else {
if (LIBXML) {
$elem->appendChild(XML::LibXML::Text->new($data));
} else {
$elem->appendChild(XML::XPath::Node::Text->new($data));
}
if ($content->version == 0.3) {
$content->mode('escaped');
} else {
$content->type($data =~ /^\s*</ ? 'html' : 'text');
}
}
}
} else {
unless (exists $content->{__body}) {
my $mode;
if ($content->version == 0.3) {
$mode = $content->mode || 'xml';
} else {
$mode =
$content->type eq 'xhtml' ? 'xml'
: $content->type =~ m![/\+]xml$! ? 'xml'
: $content->type eq 'html' ? 'escaped'
: $content->type eq 'text' ? 'escaped'
: $content->type =~ m!^text/! ? 'escaped'
: 'base64';
}
if ($mode eq 'xml') {
my @children = grep ref($_) =~ /Element/,
LIBXML ? $elem->childNodes : $elem->getChildNodes;
if (@children) {
if (@children == 1 && $children[0]->getLocalName eq 'div') {
@children =
LIBXML ? $children[0]->childNodes :
$children[0]->getChildNodes
}
$content->{__body} = '';
for my $n (@children) {
$content->{__body} .= $n->toString(LIBXML ? 1 : 0);
}
} else {
$content->{__body} = LIBXML ? $elem->textContent : $elem->string_value;
}
if ($] >= 5.008) {
Encode::_utf8_off($content->{__body}) unless $XML::Atom::ForceUnicode;
}
} elsif ($mode eq 'base64') {
my $raw = decode_base64(LIBXML ? $elem->textContent : $elem->string_value);
if ($content->type && $content->type =~ m!^text/!) {
$content->{__body} = eval { Encode::decode("utf-8", $raw) } || $raw;
Encode::_utf8_off($content->{__body}) unless $XML::Atom::ForceUnicode;
} else {
$content->{__body} = $raw;
}
} elsif ($mode eq 'escaped') {
$content->{__body} = LIBXML ? $elem->textContent : $elem->string_value;
} else {
$content->{__body} = undef;
}
}
}
$content->{__body};
}
sub _is_printable {
my $data = shift;
local $@;
# try decoding this $data with UTF-8
my $decoded =
( Encode::is_utf8($data)
? $data
: eval { Encode::decode("utf-8", $data, Encode::FB_CROAK) } );
return ! $@ && $decoded =~ /^[\p{IsPrint}\s]*$/;
}
1;
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