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<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('LACONICA')) { exit(1); }
class Rss10Action extends Action {
function handle($args) {
parent::handle($args);
$limit = (int) $this->trimmed('limit');
$this->show_rss($limit);
}
function init() {
return true;
}
function get_notices() {
return array();
}
function get_channel() {
return array('url' => '',
'title' => '',
'link' => '',
'description' => '');
}
function get_image() {
return NULL;
}
function show_rss($limit=0) {
if (!$this->init()) {
return;
}
$notices = $this->get_notices($limit);
$this->init_rss();
$this->show_channel($notices);
$this->show_image();
foreach ($notices as $n) {
$this->show_item($n);
}
$this->end_rss();
}
function show_channel($notices) {
$channel = $this->get_channel();
$image = $this->get_image();
common_element_start('channel', array('rdf:about' => $channel['url']));
common_element('title', NULL, $channel['title']);
common_element('link', NULL, $channel['link']);
common_element('description', NULL, $channel['description']);
if ($image) {
common_element('image', array('rdf:resource' => $image));
}
common_element_start('items');
common_element_start('rdf:Seq');
foreach ($notices as $notice) {
common_element('rdf:li', array('rdf:resource' => $notice->uri));
}
common_element_end('rdf:Seq');
common_element_end('items');
common_element_end('channel');
}
function show_image() {
$image = $this->get_image();
if ($image) {
$channel = $this->get_channel();
common_element_start('image', array('rdf:about' => $image));
common_element('title', NULL, $channel['title']);
common_element('link', NULL, $channel['link']);
common_element('url', NULL, $image);
common_element_end('image');
}
}
function show_item($notice) {
$nurl = common_local_url('shownotice', array('notice' => $notice->id));
common_element_start('item', array('rdf:about' => $notice->uri));
common_element('title', NULL, $notice->created);
common_element('link', NULL, $nurl);
common_element('description', NULL, common_render_content($notice->content));
common_element('dc:date', NULL, common_date_w3dtf($notice->created));
common_element_end('item');
}
function init_rss() {
header('Content-Type: application/rdf+xml');
common_start_xml();
common_element_start('rdf:RDF', array('xmlns:rdf' =>
'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
'xmlns:dc' =>
'http://purl.org/dc/elements/1.1/',
'xmlns' => 'http://purl.org/rss/1.0/'));
}
function end_rss() {
common_element_end('rdf:RDF');
}
}
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