forked from GNUsocial/gnu-social
236 lines
7.7 KiB
PHP
236 lines
7.7 KiB
PHP
<?php
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/**
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* Notice search action class.
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*
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* PHP version 5
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*
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* @category Action
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @author Robin Millette <millette@status.net>
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* @author Sarven Capadisli <csarven@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
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* @link http://status.net/
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*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2008, 2009, StatusNet, 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('STATUSNET') && !defined('LACONICA')) {
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exit(1);
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}
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require_once INSTALLDIR.'/lib/searchaction.php';
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/**
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* Notice search action class.
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*
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* @category Action
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @author Robin Millette <millette@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
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* @link http://status.net/
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* @todo common parent for people and content search?
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*/
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class NoticesearchAction extends SearchAction
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{
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protected $q = null;
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function prepare($args)
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{
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parent::prepare($args);
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$this->q = $this->trimmed('q');
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// FIXME: very dependent on tag format
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if (preg_match('/^#([\pL\pN_\-\.]{1,64})/ue', $this->q)) {
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common_redirect(common_local_url('tag',
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array('tag' => common_canonical_tag(substr($this->q, 1)))),
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303);
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}
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common_set_returnto($this->selfUrl());
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return true;
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}
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/**
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* Get instructions
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*
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* @return string instruction text
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*/
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function getInstructions()
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{
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// TRANS: Instructions for Notice search page.
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// TRANS: %%site.name%% is the name of the StatusNet site.
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return _('Search for notices on %%site.name%% by their contents. Separate search terms by spaces; they must be 3 characters or more.');
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}
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/**
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* Get title
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*
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* @return string title
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*/
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function title()
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{
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// TRANS: Title of the page where users can search for notices.
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return _('Text search');
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}
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function getFeeds()
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{
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$q = $this->trimmed('q');
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if (!$q) {
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return null;
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}
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return array(new Feed(Feed::RSS1, common_local_url('noticesearchrss',
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array('q' => $q)),
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// TRANS: Test in RSS notice search.
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// TRANS: %1$s is the query, %2$s is the StatusNet site name.
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sprintf(_('Search results for "%1$s" on %2$s'),
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$q, common_config('site', 'name'))));
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}
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/**
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* Show results
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*
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* @param string $q search query
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* @param integer $page page number
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*
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* @return void
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*/
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function showResults($q, $page)
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{
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$notice = new Notice();
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$search_engine = $notice->getSearchEngine('notice');
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$search_engine->set_sort_mode('chron');
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// Ask for an extra to see if there's more.
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$search_engine->limit((($page-1)*NOTICES_PER_PAGE), NOTICES_PER_PAGE + 1);
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if (false === $search_engine->query($q)) {
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$cnt = 0;
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} else {
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$cnt = $notice->find();
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}
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if ($cnt === 0) {
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// TRANS: Text for notice search results is the query had no results.
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$this->element('p', 'error', _('No results.'));
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$this->searchSuggestions($q);
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if (common_logged_in()) {
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// TRANS: Text for logged in users making a query for notices without results.
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// TRANS: This message contains a Markdown link.
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$message = sprintf(_('Be the first to [post on this topic](%%%%action.newnotice%%%%?status_textarea=%s)!'), urlencode($q));
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}
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else {
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// TRANS: Text for not logged in users making a query for notices without results.
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// TRANS: This message contains Markdown links.
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$message = sprintf(_('Why not [register an account](%%%%action.register%%%%) and be the first to [post on this topic](%%%%action.newnotice%%%%?status_textarea=%s)!'), urlencode($q));
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}
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$this->elementStart('div', 'guide');
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$this->raw(common_markup_to_html($message));
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$this->elementEnd('div');
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return;
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}
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if (Event::handle('StartNoticeSearchShowResults', array($this, $q, $notice))) {
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$terms = preg_split('/[\s,]+/', $q);
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$nl = new SearchNoticeList($notice, $this, $terms);
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$cnt = $nl->show();
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$this->pagination($page > 1, $cnt > NOTICES_PER_PAGE,
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$page, 'noticesearch', array('q' => $q));
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Event::handle('EndNoticeSearchShowResults', array($this, $q, $notice));
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}
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}
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function showScripts()
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{
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parent::showScripts();
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$this->autofocus('q');
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}
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}
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class SearchNoticeList extends NoticeList {
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function __construct($notice, $out=null, $terms)
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{
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parent::__construct($notice, $out);
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$this->terms = $terms;
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}
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function newListItem($notice)
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{
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return new SearchNoticeListItem($notice, $this->out, $this->terms);
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}
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}
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class SearchNoticeListItem extends NoticeListItem {
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function __construct($notice, $out=null, $terms)
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{
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parent::__construct($notice, $out);
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$this->terms = $terms;
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}
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function showContent()
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{
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// FIXME: URL, image, video, audio
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$this->out->elementStart('p', array('class' => 'entry-content'));
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if ($this->notice->rendered) {
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$this->out->raw($this->highlight($this->notice->rendered, $this->terms));
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} else {
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// XXX: may be some uncooked notices in the DB,
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// we cook them right now. This should probably disappear in future
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// versions (>> 0.4.x)
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$this->out->raw($this->highlight(common_render_content($this->notice->content, $this->notice), $this->terms));
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}
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$this->out->elementEnd('p');
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}
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/**
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* Highlist query terms
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*
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* @param string $text notice text
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* @param array $terms terms to highlight
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*
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* @return void
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*/
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function highlight($text, $terms)
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{
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/* Highligh search terms */
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$options = implode('|', array_map('preg_quote', array_map('htmlspecialchars', $terms),
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array_fill(0, sizeof($terms), '/')));
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$pattern = "/($options)/i";
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$result = '';
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/* Divide up into text (highlight me) and tags (don't touch) */
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$chunks = preg_split('/(<[^>]+>)/', $text, 0, PREG_SPLIT_DELIM_CAPTURE);
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foreach ($chunks as $i => $chunk) {
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if ($i % 2 == 1) {
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// odd: delimiter (tag)
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$result .= $chunk;
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} else {
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// even: freetext between tags
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$result .= preg_replace($pattern, '<strong>\\1</strong>', $chunk);
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}
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}
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return $result;
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}
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}
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