3 * StatusNet, the distributed open-source microblogging tool
5 * Action for showing Twitter-like Atom search results
9 * LICENCE: This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Affero General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Affero General Public License for more details.
19 * You should have received a copy of the GNU Affero General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * @author Zach Copley <zach@status.net>
25 * @copyright 2008-2010 StatusNet, Inc.
26 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
27 * @link http://status.net/
30 if (!defined('STATUSNET') && !defined('LACONICA')) {
34 require_once INSTALLDIR.'/lib/apiprivateauth.php';
37 * Action for outputting search results in Twitter compatible Atom
40 * TODO: abstract Atom stuff into a ruseable base class like
45 * @author Zach Copley <zach@status.net>
46 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
47 * @link http://status.net/
49 * @see ApiPrivateAuthAction
52 class ApiSearchAtomAction extends ApiPrivateAuthAction
66 * Just wraps the Action constructor.
68 * @param string $output URI to output to, default = stdout
69 * @param boolean $indent Whether to indent output, default true
71 * @see Action::__construct
74 function __construct($output='php://output', $indent=null)
76 parent::__construct($output, $indent);
80 * Do we need to write to the database?
82 * @return boolean true
91 * Read arguments and initialize members
93 * @param array $args Arguments from $_REQUEST
95 * @return boolean success
99 function prepare($args)
101 common_debug("in apisearchatom prepare()");
103 parent::prepare($args);
106 $this->query = $this->trimmed('q');
107 $this->lang = $this->trimmed('lang');
108 $this->rpp = $this->trimmed('rpp');
114 if ($this->rpp > 100) {
118 $this->page = $this->trimmed('page');
124 // TODO: Suppport since_id -- we need to tweak the backend
125 // Search classes to support it.
127 $this->since_id = $this->trimmed('since_id');
128 $this->geocode = $this->trimmed('geocode');
130 // TODO: Also, language and geocode
138 * @param array $args Arguments from $_REQUEST
143 function handle($args)
145 parent::handle($args);
146 common_debug("In apisearchatom handle()");
151 * Get the notices to output as results. This also sets some class
152 * attrs so we can use them to calculate pagination, and output
153 * since_id and max_id.
155 * @return array an array of Notice objects sorted in reverse chron
158 function getNotices()
160 // TODO: Support search operators like from: and to:, boolean, etc.
163 $notice = new Notice();
165 // lcase it for comparison
166 $q = strtolower($this->query);
168 $search_engine = $notice->getSearchEngine('notice');
169 $search_engine->set_sort_mode('chron');
170 $search_engine->limit(($this->page - 1) * $this->rpp,
171 $this->rpp + 1, true);
172 if (false === $search_engine->query($q)) {
175 $this->cnt = $notice->find();
181 if ($this->cnt > 0) {
182 while ($notice->fetch()) {
186 if (!$this->max_id) {
187 $this->max_id = $notice->id;
190 if ($cnt > $this->rpp) {
194 $notices[] = clone($notice);
202 * Output search results as an Atom feed
209 $notices = $this->getNotices();
214 foreach ($notices as $n) {
216 $profile = $n->getProfile();
218 // Don't show notices from deleted users
220 if (!empty($profile)) {
221 $this->showEntry($n);
229 * Show feed specific Atom elements
236 // TODO: A9 OpenSearch stuff like search.twitter.com?
238 $server = common_config('site', 'server');
239 $sitename = common_config('site', 'name');
241 // XXX: Use xmlns:statusnet instead?
243 $this->elementStart('feed',
244 array('xmlns' => 'http://www.w3.org/2005/Atom',
246 // XXX: xmlns:twitter causes Atom validation to fail
247 // It's used for the source attr on notices
249 'xmlns:twitter' => 'http://api.twitter.com/',
250 'xml:lang' => 'en-US')); // XXX Other locales ?
252 $taguribase = TagURI::base();
253 $this->element('id', null, "tag:$taguribase:search/$server");
255 $site_uri = common_path(false);
257 $search_uri = $site_uri . 'api/search.atom?q=' . urlencode($this->query);
259 if ($this->rpp != 15) {
260 $search_uri .= '&rpp=' . $this->rpp;
263 // FIXME: this alternate link is not quite right because our
264 // web-based notice search doesn't support a rpp (responses per
267 $this->element('link', array('type' => 'text/html',
268 'rel' => 'alternate',
269 'href' => $site_uri . 'search/notice?q=' .
270 urlencode($this->query)));
274 $self_uri = $search_uri;
275 $self_uri .= ($this->page > 1) ? '&page=' . $this->page : '';
277 $this->element('link', array('type' => 'application/atom+xml',
279 'href' => $self_uri));
281 $this->element('title', null, "$this->query - $sitename Search");
282 $this->element('updated', null, common_date_iso8601('now'));
284 // XXX: The below "rel" links are not valid Atom, but it's what
289 $refresh_uri = $search_uri . "&since_id=" . $this->max_id;
291 $this->element('link', array('type' => 'application/atom+xml',
293 'href' => $refresh_uri));
297 if ($this->cnt > $this->rpp) {
299 $next_uri = $search_uri . "&max_id=" . $this->max_id .
300 '&page=' . ($this->page + 1);
302 $this->element('link', array('type' => 'application/atom+xml',
304 'href' => $next_uri));
307 if ($this->page > 1) {
309 $previous_uri = $search_uri . "&max_id=" . $this->max_id .
310 '&page=' . ($this->page - 1);
312 $this->element('link', array('type' => 'application/atom+xml',
314 'href' => $previous_uri));
320 * Build an Atom entry similar to search.twitter.com's based on
323 * @param Notice $notice the notice to use
328 function showEntry($notice)
330 $server = common_config('site', 'server');
331 $profile = $notice->getProfile();
332 $nurl = common_local_url('shownotice', array('notice' => $notice->id));
334 $this->elementStart('entry');
336 $taguribase = TagURI::base();
338 $this->element('id', null, "tag:$taguribase:$notice->id");
339 $this->element('published', null, common_date_w3dtf($notice->created));
340 $this->element('link', array('type' => 'text/html',
341 'rel' => 'alternate',
343 $this->element('title', null, common_xml_safe_str(trim($notice->content)));
344 $this->element('content', array('type' => 'html'), $notice->rendered);
345 $this->element('updated', null, common_date_w3dtf($notice->created));
346 $this->element('link', array('type' => 'image/png',
347 // XXX: Twitter uses rel="image" (not valid)
349 'href' => $profile->avatarUrl()));
351 // @todo: Here is where we'd put in a link to an atom feed for threads
355 $ns = $notice->getSource();
357 if (!empty($ns->name) && !empty($ns->url)) {
358 $source = '<a href="'
359 . htmlspecialchars($ns->url)
360 . '" rel="nofollow">'
361 . htmlspecialchars($ns->name)
368 $this->element("twitter:source", null, $source);
370 $this->elementStart('author');
372 $name = $profile->nickname;
374 if ($profile->fullname) {
375 $name .= ' (' . $profile->fullname . ')';
378 $this->element('name', null, $name);
379 $this->element('uri', null, common_profile_uri($profile));
380 $this->elementEnd('author');
382 $this->elementEnd('entry');
386 * Initialize the Atom output, send headers
393 header('Content-Type: application/atom+xml; charset=utf-8');
405 $this->elementEnd('feed');