# $Id$
package XML::Feed::Format::Atom;
use strict;
use base qw( XML::Feed );
use XML::Atom::Feed;
use XML::Atom::Util qw( iso2dt );
use List::Util qw( first );
use DateTime::Format::W3CDTF;
use HTML::Entities;
use XML::Atom::Entry;
XML::Atom::Entry->mk_elem_accessors(qw( lat long ), ['http://www.w3.org/2003/01/geo/wgs84_pos#']);
use XML::Atom::Content;
sub identify {
my $class = shift;
my $xml = shift;
my $tag = $class->_get_first_tag($xml);
return ($tag eq 'feed');
}
sub init_empty {
my ($feed, %args) = @_;
$args{'Version'} ||= '1.0';
$feed->{atom} = XML::Atom::Feed->new(%args);
$feed;
}
sub init_string {
my $feed = shift;
my($str) = @_;
if ($str) {
$feed->{atom} = XML::Atom::Feed->new(Stream => $str)
or return $feed->error(XML::Atom::Feed->errstr);
}
$feed;
}
sub format { 'Atom' }
sub title { shift->{atom}->title(@_) }
sub link {
my $feed = shift;
if (@_) {
$feed->{atom}->add_link({ rel => 'alternate', href => $_[0],
type => 'text/html', });
} else {
my $l = first { !defined $_->rel || $_->rel eq 'alternate' } $feed->{atom}->link;
$l ? $l->href : undef;
}
}
sub self_link {
my $feed = shift;
if (@_) {
my $uri = shift;
$feed->{atom}->add_link({type => "application/atom+xml", rel => "self", href => $uri});
return $uri;
}
else
{
my $l =
first
{ !defined $_->rel || $_->rel eq 'self' }
$feed->{atom}->link;
;
return $l ? $l->href : undef;
}
}
sub description { shift->{atom}->tagline(@_) }
sub copyright { shift->{atom}->copyright(@_) }
sub language { shift->{atom}->language(@_) }
sub generator { shift->{atom}->generator(@_) }
sub id { shift->{atom}->id(@_) }
sub updated { shift->{atom}->updated(@_) }
sub add_link { shift->{atom}->add_link(@_) }
sub base { shift->{atom}->base(@_) }
sub author {
my $feed = shift;
if (@_ && $_[0]) {
my $person = XML::Atom::Person->new(Version => 1.0);
$person->name($_[0]);
$feed->{atom}->author($person);
} else {
$feed->{atom}->author ? $feed->{atom}->author->name : undef;
}
}
sub modified {
my $feed = shift;
if (@_) {
$feed->{atom}->modified(DateTime::Format::W3CDTF->format_datetime($_[0]));
} else {
return iso2dt($feed->{atom}->modified) if $feed->{atom}->modified;
return iso2dt($feed->{atom}->updated) if $feed->{atom}->updated;
return undef;
}
}
sub entries {
my @entries;
for my $entry ($_[0]->{atom}->entries) {
push @entries, XML::Feed::Entry::Format::Atom->wrap($entry);
}
@entries;
}
sub add_entry {
my $feed = shift;
my $entry = shift || return;
$entry = $feed->_convert_entry($entry);
$feed->{atom}->add_entry($entry->unwrap);
}
sub as_xml { $_[0]->{atom}->as_xml }
package XML::Feed::Entry::Format::Atom;
use strict;
use base qw( XML::Feed::Entry );
use XML::Atom::Util qw( iso2dt );
use XML::Feed::Content;
use XML::Atom::Entry;
use List::Util qw( first );
sub init_empty {
my $entry = shift;
$entry->{entry} = XML::Atom::Entry->new(Version => 1.0);
1;
}
sub format { 'Atom' }
sub title { shift->{entry}->title(@_) }
sub source { shift->{entry}->source(@_) }
sub updated { shift->{entry}->updated(@_) }
sub base { shift->{entry}->base(@_) }
sub link {
my $entry = shift;
if (@_) {
$entry->{entry}->add_link({ rel => 'alternate', href => $_[0],
type => 'text/html', });
} else {
my $l = first { !defined $_->rel || $_->rel eq 'alternate' } $entry->{entry}->link;
$l ? $l->href : undef;
}
}
sub summary {
my $entry = shift;
if (@_) {
my %param;
if (ref($_[0]) eq 'XML::Feed::Content') {
%param = (Body => $_[0]->body);
} else {
%param = (Body => $_[0]);
}
$entry->{entry}->summary(XML::Atom::Content->new(%param, Version => 1.0));
} else {
my $s = $entry->{entry}->summary;
# map Atom types to MIME types
my $type = ($s && ref($s) eq 'XML::Feed::Content') ? $s->type : undef;
if ($type) {
$type = 'text/html' if $type eq 'xhtml' || $type eq 'html';
$type = 'text/plain' if $type eq 'text';
}
my $body = $s;
if (defined $s && ref($s) eq 'XML::Feed::Content') {
$body = $s->body;
}
XML::Feed::Content->wrap({ type => $type,
body => $body });
}
}
my %types = (
'text/xhtml' => 'xhtml',
'text/html' => 'html',
'text/plain' => 'text',
);
sub content {
my $entry = shift;
if (@_) {
my %param;
my $base;
my $orig_body;
if (ref($_[0]) eq 'XML::Feed::Content') {
$orig_body = $_[0]->body;
if (defined $_[0]->type && defined $types{$_[0]->type}) {
%param = (Body => $_[0]->body, Type => $types{$_[0]->type});
if ($param{'Type'} eq "html") {
$param{'Body'} = HTML::Entities::encode_entities($param{'Body'});
}
} else {
%param = (Body => $_[0]->body);
}
$base = $_[0]->base if defined $_[0]->base;
} else {
$orig_body = $_[0];
%param = (Body => $_[0]);
}
$entry->{entry}->content(XML::Atom::Content->new(%param, Version => 1.0));
$entry->{entry}->content->base($base) if defined $base;
} else {
my $c = $entry->{entry}->content;
# map Atom types to MIME types
my $type = $c ? $c->type : undef;
if ($type) {
$type = 'text/html' if $type eq 'xhtml' || $type eq 'html';
$type = 'text/plain' if $type eq 'text';
}
XML::Feed::Content->wrap({ type => $type,
base => $c ? $c->base : undef,
body => $c ? $c->body : undef });
}
}
sub category {
my $entry = shift;
my $ns = XML::Atom::Namespace->new(dc => 'http://purl.org/dc/elements/1.1/');
if (@_) {
$entry->{entry}->add_category({ term => $_ }) for @_;
return 1
} else {
my @category = ($entry->{entry}->can('categories')) ? $entry->{entry}->categories : $entry->{entry}->category;
my @return = @category
? (map { $_->label || $_->term } @category)
: $entry->{entry}->getlist($ns, 'subject');
return wantarray? @return : $return[0];
}
}
sub author {
my $entry = shift;
if (@_ && $_[0]) {
my $person = XML::Atom::Person->new(Version => 1.0);
$person->name($_[0]);
$entry->{entry}->author($person);
} else {
$entry->{entry}->author ? $entry->{entry}->author->name : undef;
}
}
sub id { shift->{entry}->id(@_) }
sub issued {
my $entry = shift;
if (@_) {
$entry->{entry}->issued(DateTime::Format::W3CDTF->format_datetime($_[0])) if $_[0];
} else {
$entry->{entry}->issued ? iso2dt($entry->{entry}->issued) : undef;
}
}
sub modified {
my $entry = shift;
if (@_) {
$entry->{entry}->modified(DateTime::Format::W3CDTF->format_datetime($_[0])) if $_[0];
} else {
return iso2dt($entry->{entry}->modified) if $entry->{entry}->modified;
return iso2dt($entry->{entry}->updated) if $entry->{entry}->updated;
return undef;
}
}
sub lat {
my $entry = shift;
if (@_) {
$entry->{entry}->lat($_[0]) if $_[0];
} else {
$entry->{entry}->lat;
}
}
sub long {
my $entry = shift;
if (@_) {
$entry->{entry}->long($_[0]) if $_[0];
} else {
$entry->{entry}->long;
}
}
sub enclosure {
my $entry = shift;
if (@_) {
my $enclosure = shift;
my $method = ($XML::Feed::MULTIPLE_ENCLOSURES)? 'add_link' : 'link';
$entry->{entry}->$method({ rel => 'enclosure', href => $enclosure->{url},
length => $enclosure->{length},
type => $enclosure->{type} });
return 1;
} else {
my @links = grep { defined $_->rel && $_->rel eq 'enclosure' } $entry->{entry}->link;
return undef unless @links;
my @encs = map { XML::Feed::Enclosure->new({ url => $_->href, length => $_->length, type => $_->type }) } @links ;
return ($XML::Feed::MULTIPLE_ENCLOSURES)? @encs : $encs[-1];
}
}
1;