actions/rss10.php

   1 <?php
   2 /*
   3  * Laconica - a distributed open-source microblogging tool
   4  * Copyright (C) 2008, Controlez-Vous, Inc.
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU Affero General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Affero General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Affero General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 if (!defined('LACONICA')) { exit(1); }
  21
  22 class Rss10Action extends Action {
  23
  24         function handle($args) {
  25                 parent::handle($args);
  26
  27                 $nickname = $this->trimmed('nickname');
  28
  29                 if (!$nickname) {
  30                         common_user_error(_t('No nickname provided.'));
  31                 }
  32
  33                 $user = User::staticGet('nickname', $nickname);
  34
  35                 if (!$user) {
  36                         common_user_error(_t('No such nickname.'));
  37                 }
  38
  39                 $limit = (int) $this->trimmed('limit');
  40
  41                 $this->show_rss($user, $limit);
  42         }
  43
  44         function show_rss($user, $limit=0) {
  45
  46                 global $config;
  47
  48                 header('Content-Type: application/rdf+xml');
  49
  50                 common_start_xml();
  51                 common_element_start('rdf:RDF', array('xmlns:rdf' =>
  52                                                                                           'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
  53                                                                                           'xmlns' => 'http://purl.org/rss/1.0/'));
  54
  55                 $notices = $this->get_notices($user, $limit);
  56                 $this->show_channel($user, $notices);
  57
  58                 foreach ($notices as $n) {
  59                         $this->show_item($n);
  60                 }
  61
  62                 common_element_end('rdf:RDF');
  63         }
  64
  65         function get_notices($user, $limit=0) {
  66                 $notices = array();
  67
  68                 $notice = DB_DataObject::factory('notice');
  69                 $notice->profile_id = $user->id; # user id === profile id
  70                 $notice->orderBy('created DESC');
  71                 if ($limit != 0) {
  72                         $notice->limit(0, $limit);
  73                 }
  74                 $notice->find();
  75
  76                 while ($notice->fetch()) {
  77                         $notices[] = clone($notice);
  78                 }
  79
  80                 return $notices;
  81         }
  82
  83         function show_channel($user, $notices) {
  84
  85                 # XXX: this is kind of indirect, eh?
  86                 $profile = $user->getProfile();
  87                 $avatar = $profile->getAvatar(AVATAR_PROFILE_SIZE);
  88
  89                 common_element_start('channel', array('rdf:about' =>
  90                                                                                           common_local_url('rss10',
  91                                                                                                                            array('nickname' =>
  92                                                                                                                                          $user->nickname))));
  93                 common_element('title', NULL, $user->nickname);
  94                 common_element('link', NULL, $profile->profileurl);
  95                 common_element('description', NULL, _t('Microblog by ') . $user->nickname);
  96
  97                 if ($avatar) {
  98                         common_element('image', array('rdf:resource' => $avatar->url));
  99                 }
 100
 101                 common_element_start('items');
 102                 common_element_start('rdf:Seq');
 103                 foreach ($notices as $n) {
 104                         common_element('rdf:li', array('rdf:resource' =>
 105                                                                                    common_local_url('shownotice',
 106                                                                                                                         array('notice' => $n->id))));
 107                 }
 108
 109                 common_element_end('rdf:Seq');
 110                 common_element_end('items');
 111                 common_element_end('channel');
 112
 113                 if ($avatar) {
 114                         common_element_start('image', array('rdf:about' => $avatar->url));
 115                         common_element('title', NULL, $user->nickname);
 116                         common_element('link', NULL, $profile->profileurl);
 117                         common_element('url', NULL, $avatar->url);
 118                         common_element_end('image');
 119                 }
 120         }
 121
 122         function show_item($notice) {
 123                 $nurl = common_local_url('shownotice', array('notice' => $n->id));
 124                 common_element_start('item', array('rdf:about' => $nurl));
 125                 common_element('title', NULL, $notice->created);
 126                 common_element('link', NULL, $nurl);
 127                 common_element('description', NULL, common_render_content($notice->content));
 128                 common_element_end('item');
 129         }
 130 }