forked from GNUsocial/gnu-social
211 lines
6.9 KiB
PHP
211 lines
6.9 KiB
PHP
<?php
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/*
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* Laconica - a distributed open-source microblogging tool
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* Copyright (C) 2008, Controlez-Vous, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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if (!defined('LACONICA')) { exit(1); }
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define('DEFAULT_RSS_LIMIT', 48);
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class Rss10Action extends Action {
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# This will contain the details of each feed item's author and be used to generate SIOC data.
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var $creators = array();
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function is_readonly() {
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return true;
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}
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function handle($args) {
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parent::handle($args);
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$limit = (int) $this->trimmed('limit');
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if ($limit == 0) {
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$limit = DEFAULT_RSS_LIMIT;
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}
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$this->show_rss($limit);
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}
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function init() {
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return true;
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}
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function get_notices() {
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return array();
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}
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function get_channel() {
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return array('url' => '',
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'title' => '',
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'link' => '',
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'description' => '');
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}
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function get_image() {
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return NULL;
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}
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function show_rss($limit=0) {
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if (!$this->init()) {
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return;
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}
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$notices = $this->get_notices($limit);
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$this->init_rss();
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$this->show_channel($notices);
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$this->show_image();
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foreach ($notices as $n) {
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$this->show_item($n);
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}
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$this->show_creators();
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$this->end_rss();
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}
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function show_channel($notices) {
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$channel = $this->get_channel();
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$image = $this->get_image();
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common_element_start('channel', array('rdf:about' => $channel['url']));
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common_element('title', NULL, $channel['title']);
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common_element('link', NULL, $channel['link']);
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common_element('description', NULL, $channel['description']);
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common_element('cc:licence', array('rdf:resource' => common_config('license','url')));
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if ($image) {
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common_element('image', array('rdf:resource' => $image));
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}
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common_element_start('items');
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common_element_start('rdf:Seq');
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foreach ($notices as $notice) {
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common_element('sioct:MicroblogPost', array('rdf:resource' => $notice->uri));
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}
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common_element_end('rdf:Seq');
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common_element_end('items');
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common_element_end('channel');
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}
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function show_image() {
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$image = $this->get_image();
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if ($image) {
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$channel = $this->get_channel();
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common_element_start('image', array('rdf:about' => $image));
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common_element('title', NULL, $channel['title']);
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common_element('link', NULL, $channel['link']);
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common_element('url', NULL, $image);
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common_element_end('image');
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}
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}
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function show_item($notice) {
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$profile = Profile::staticGet($notice->profile_id);
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$nurl = common_local_url('shownotice', array('notice' => $notice->id));
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$creator_uri = common_profile_uri($profile);
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common_element_start('item', array('rdf:about' => $notice->uri));
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$title = $profile->nickname . ': ' . common_xml_safe_str($notice->content);
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common_element('title', NULL, $title);
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common_element('link', NULL, $nurl);
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common_element('description', NULL, $profile->nickname."'s status on ".common_exact_date($notice->created));
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common_element('dc:date', NULL, common_date_w3dtf($notice->created));
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common_element('dc:creator', NULL, ($profile->fullname) ? $profile->fullname : $profile->nickname);
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common_element('sioc:has_creator', array('rdf:resource' => $creator_uri));
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common_element('laconica:postIcon', array('rdf:resource' => common_profile_avatar_url($profile)));
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common_element('cc:licence', array('rdf:resource' => common_config('license', 'url')));
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common_element_start('content:items');
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common_element_start('rdf:Bag');
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common_element_start('rdf:li');
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common_element_start('content:item');
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common_element('content:format', array('rdf:resource' =>
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'http://www.w3.org/1999/xhtml'));
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common_text($notice->rendered);
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common_element_end('content:item');
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common_element_end('rdf:li');
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common_element_start('rdf:li');
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common_element_start('content:item');
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common_element('content:format', array('rdf:resource' =>
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'http://www.isi.edu/in-notes/iana/assignments/media-types/text/plain'));
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common_text(common_xml_safe_str($notice->content));
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common_element_end('content:item');
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common_element_end('rdf:li');
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common_element_end('rdf:Bag');
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common_element_end('content:items');
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common_element_end('item');
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$this->creators[$creator_uri] = $profile;
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}
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function show_creators() {
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foreach ($this->creators as $uri => $profile) {
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$id = $profile->id;
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$nickname = $profile->nickname;
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common_element_start('sioc:User', array('rdf:about' => $uri));
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common_element('foaf:nick', NULL, $nickname);
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if ($profile->fullname) {
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common_element('foaf:name', NULL, $profile->fullname);
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}
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common_element('sioc:id', NULL, $id);
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$avatar = common_profile_avatar_url($profile);
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common_element('sioc:avatar', array('rdf:resource' => $avatar));
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common_element_end('sioc:User');
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}
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}
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function init_rss() {
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$channel = $this->get_channel();
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header('Content-Type: application/rdf+xml');
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common_start_xml();
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common_element_start('rdf:RDF', array('xmlns:rdf' =>
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'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
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'xmlns:dc' =>
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'http://purl.org/dc/elements/1.1/',
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'xmlns:cc' =>
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'http://web.resource.org/cc/',
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'xmlns:content' =>
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'http://purl.org/rss/1.0/modules/content/',
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'xmlns:foaf' =>
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'http://xmlns.com/foaf/0.1/',
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'xmlns:sioc' =>
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'http://rdfs.org/sioc/ns#',
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'xmlns:sioct' =>
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'http://rdfs.org/sioc/types#',
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'xmlns:laconica' =>
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'http://laconi.ca/ont/',
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'xmlns' => 'http://purl.org/rss/1.0/'));
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common_element_start('sioc:Site', array('rdf:about' => common_root_url()));
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common_element('sioc:name', NULL, common_config('site', 'name'));
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common_element_start('sioc:container_of');
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common_element('sioc:Container', array('rdf:about' =>
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$channel['url']));
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common_element_end('sioc:container_of');
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common_element_end('sioc:Site');
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}
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function end_rss() {
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common_element_end('rdf:RDF');
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}
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}
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