343cd6f205
Moved the common_avatar_* functions to the Avatar class. Typically either as methods on the object or as static methods. Replaced all the uses of the functions in other modules.
263 lines
8.3 KiB
PHP
263 lines
8.3 KiB
PHP
<?php
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/**
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* Laconica, the distributed open-source microblogging tool
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*
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* Base class for RSS 1.0 feed actions
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*
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* PHP version 5
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*
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* LICENCE: 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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* @category Mail
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* @package Laconica
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* @author Evan Prodromou <evan@controlyourself.ca>
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* @author Earle Martin <earle@downlode.org>
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* @copyright 2008-9 Control Yourself, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://laconi.ca/
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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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{
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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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var $limit = DEFAULT_RSS_LIMIT;
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/**
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* Constructor
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*
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* Just wraps the Action constructor.
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*
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* @param string $output URI to output to, default = stdout
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* @param boolean $indent Whether to indent output, default true
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*
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* @see Action::__construct
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*/
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function __construct($output='php://output', $indent=true)
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{
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parent::__construct($output, $indent);
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}
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/**
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* Do we need to write to the database?
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*
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* @return boolean true
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*/
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function isReadonly()
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{
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return true;
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}
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/**
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* Read arguments and initialize members
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*
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* @param array $args Arguments from $_REQUEST
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* @return boolean success
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*/
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function prepare($args)
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{
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parent::prepare($args);
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$this->limit = (int) $this->trimmed('limit');
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if ($this->limit == 0) {
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$this->limit = DEFAULT_RSS_LIMIT;
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}
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return true;
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}
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/**
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* Handle a request
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*
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* @param array $args Arguments from $_REQUEST
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*
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* @return void
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*/
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function handle($args)
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{
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parent::handle($args);
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$this->showRss($this->limit);
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}
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/**
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* Get the notices to output in this stream
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*
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* @return array an array of Notice objects sorted in reverse chron
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*/
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function getNotices()
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{
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return array();
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}
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/**
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* Get a description of the channel
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*
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* Returns an array with the following
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* @return array
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*/
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function getChannel()
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{
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return array('url' => '',
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'title' => '',
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'link' => '',
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'description' => '');
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}
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function getImage()
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{
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return null;
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}
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function showRss($limit=0)
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{
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$notices = $this->getNotices($limit);
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$this->initRss();
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$this->showChannel($notices);
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$this->showImage();
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foreach ($notices as $n) {
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$this->showItem($n);
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}
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$this->showCreators();
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$this->endRss();
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}
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function showChannel($notices)
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{
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$channel = $this->getChannel();
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$image = $this->getImage();
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$this->elementStart('channel', array('rdf:about' => $channel['url']));
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$this->element('title', null, $channel['title']);
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$this->element('link', null, $channel['link']);
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$this->element('description', null, $channel['description']);
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$this->element('cc:licence', array('rdf:resource' => common_config('license','url')));
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if ($image) {
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$this->element('image', array('rdf:resource' => $image));
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}
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$this->elementStart('items');
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$this->elementStart('rdf:Seq');
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foreach ($notices as $notice) {
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$this->element('sioct:MicroblogPost', array('rdf:resource' => $notice->uri));
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}
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$this->elementEnd('rdf:Seq');
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$this->elementEnd('items');
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$this->elementEnd('channel');
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}
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function showImage()
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{
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$image = $this->getImage();
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if ($image) {
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$channel = $this->getChannel();
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$this->elementStart('image', array('rdf:about' => $image));
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$this->element('title', null, $channel['title']);
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$this->element('link', null, $channel['link']);
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$this->element('url', null, $image);
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$this->elementEnd('image');
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}
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}
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function showItem($notice)
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{
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$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($profile);
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$this->elementStart('item', array('rdf:about' => $notice->uri));
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$title = $profile->nickname . ': ' . common_xml_safe_str(trim($notice->content));
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$this->element('title', null, $title);
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$this->element('link', null, $nurl);
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$this->element('description', null, $profile->nickname."'s status on ".common_exact_date($notice->created));
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$this->element('dc:date', null, common_date_w3dtf($notice->created));
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$this->element('dc:creator', null, ($profile->fullname) ? $profile->fullname : $profile->nickname);
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$this->element('sioc:has_creator', array('rdf:resource' => $creator_uri));
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$this->element('laconica:postIcon', array('rdf:resource' => $profile->avatarUrl()));
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$this->element('cc:licence', array('rdf:resource' => common_config('license', 'url')));
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$this->elementEnd('item');
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$this->creators[$creator_uri] = $profile;
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}
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function showCreators()
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{
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foreach ($this->creators as $uri => $profile) {
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$id = $profile->id;
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$nickname = $profile->nickname;
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$this->elementStart('sioc:User', array('rdf:about' => $uri));
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$this->element('foaf:nick', null, $nickname);
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if ($profile->fullname) {
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$this->element('foaf:name', null, $profile->fullname);
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}
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$this->element('sioc:id', null, $id);
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$avatar = $profile->avatarUrl();
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$this->element('sioc:avatar', array('rdf:resource' => $avatar));
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$this->elementEnd('sioc:User');
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}
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}
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function initRss()
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{
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$channel = $this->getChannel();
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header('Content-Type: application/rdf+xml');
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$this->startXml();
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$this->elementStart('rdf:RDF', array('xmlns:rdf' =>
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'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
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'xmlns:dc' =>
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'http://purl.org/dc/elements/1.1/',
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'xmlns:cc' =>
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'http://web.resource.org/cc/',
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'xmlns:content' =>
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'http://purl.org/rss/1.0/modules/content/',
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'xmlns:foaf' =>
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'http://xmlns.com/foaf/0.1/',
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'xmlns:sioc' =>
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'http://rdfs.org/sioc/ns#',
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'xmlns:sioct' =>
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'http://rdfs.org/sioc/types#',
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'xmlns:laconica' =>
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'http://laconi.ca/ont/',
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'xmlns' => 'http://purl.org/rss/1.0/'));
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$this->elementStart('sioc:Site', array('rdf:about' => common_root_url()));
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$this->element('sioc:name', null, common_config('site', 'name'));
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$this->elementStart('sioc:container_of');
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$this->element('sioc:Container', array('rdf:about' =>
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$channel['url']));
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$this->elementEnd('sioc:container_of');
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$this->elementEnd('sioc:Site');
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}
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function endRss()
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{
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$this->elementEnd('rdf:RDF');
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}
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}
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