diff options
Diffstat (limited to 'lib/rssaction.php')
-rw-r--r-- | lib/rssaction.php | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/lib/rssaction.php b/lib/rssaction.php new file mode 100644 index 000000000..777511506 --- /dev/null +++ b/lib/rssaction.php @@ -0,0 +1,189 @@ +<?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); } + +define('DEFAULT_RSS_LIMIT', 48); + +class Rss10Action extends Action { + + # This will contain the details of each feed item's author and be used to generate SIOC data. + var $creators = array(); + + function is_readonly() { + return true; + } + + function handle($args) { + parent::handle($args); + $limit = (int) $this->trimmed('limit'); + if ($limit == 0) { + $limit = DEFAULT_RSS_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->show_creators(); + $this->end_rss(); + } + + function show_channel($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, $channel['description']); + common_element('cc:licence', array('rdf:resource' => common_config('license','url'))); + + if ($image) { + common_element('image', array('rdf:resource' => $image)); + } + + common_element_start('items'); + common_element_start('rdf:Seq'); + + foreach ($notices as $notice) { + common_element('sioct:MicroblogPost', 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) { + $profile = Profile::staticGet($notice->profile_id); + $nurl = common_local_url('shownotice', array('notice' => $notice->id)); + $creator_uri = common_profile_uri($profile); + common_element_start('item', array('rdf:about' => $notice->uri)); + $title = $profile->nickname . ': ' . common_xml_safe_str(trim($notice->content)); + common_element('title', NULL, $title); + common_element('link', NULL, $nurl); + common_element('description', NULL, $profile->nickname."'s status on ".common_exact_date($notice->created)); + common_element('dc:date', NULL, common_date_w3dtf($notice->created)); + common_element('dc:creator', NULL, ($profile->fullname) ? $profile->fullname : $profile->nickname); + common_element('sioc:has_creator', array('rdf:resource' => $creator_uri)); + common_element('laconica:postIcon', array('rdf:resource' => common_profile_avatar_url($profile))); + common_element('cc:licence', array('rdf:resource' => common_config('license', 'url'))); + common_element_end('item'); + $this->creators[$creator_uri] = $profile; + } + + function show_creators() { + foreach ($this->creators as $uri => $profile) { + $id = $profile->id; + $nickname = $profile->nickname; + common_element_start('sioc:User', array('rdf:about' => $uri)); + common_element('foaf:nick', NULL, $nickname); + if ($profile->fullname) { + common_element('foaf:name', NULL, $profile->fullname); + } + common_element('sioc:id', NULL, $id); + $avatar = common_profile_avatar_url($profile); + common_element('sioc:avatar', array('rdf:resource' => $avatar)); + common_element_end('sioc:User'); + } + } + + function init_rss() { + $channel = $this->get_channel(); + 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:cc' => + 'http://web.resource.org/cc/', + 'xmlns:content' => + 'http://purl.org/rss/1.0/modules/content/', + 'xmlns:foaf' => + 'http://xmlns.com/foaf/0.1/', + 'xmlns:sioc' => + 'http://rdfs.org/sioc/ns#', + 'xmlns:sioct' => + 'http://rdfs.org/sioc/types#', + 'xmlns:laconica' => + 'http://laconi.ca/ont/', + 'xmlns' => 'http://purl.org/rss/1.0/')); + common_element_start('sioc:Site', array('rdf:about' => common_root_url())); + common_element('sioc:name', NULL, common_config('site', 'name')); + common_element_start('sioc:container_of'); + common_element('sioc:Container', array('rdf:about' => + $channel['url'])); + common_element_end('sioc:container_of'); + common_element_end('sioc:Site'); + } + + function end_rss() { + common_element_end('rdf:RDF'); + } +} |