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[quix0rs-gnu-social.git] / actions / noticesearch.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 require_once(INSTALLDIR.'/lib/searchaction.php');
23
24 # XXX common parent for people and content search?
25
26 class NoticesearchAction extends SearchAction
27 {
28
29     function get_instructions()
30     {
31         return _('Search for notices on %%site.name%% by their contents. Separate search terms by spaces; they must be 3 characters or more.');
32     }
33
34     function get_title()
35     {
36         return _('Text search');
37     }
38
39     function show_results($q, $page)
40     {
41
42         $notice = new Notice();
43
44         # lcase it for comparison
45         $q = strtolower($q);
46
47         $search_engine = $notice->getSearchEngine('identica_notices');
48
49         $search_engine->set_sort_mode('chron');
50         # Ask for an extra to see if there's more.
51         $search_engine->limit((($page-1)*NOTICES_PER_PAGE), NOTICES_PER_PAGE + 1);
52
53         if (false === $search_engine->query($q)) {
54             $cnt = 0;
55         }
56         else {
57             $cnt = $notice->find();
58         }
59         if ($cnt > 0) {
60             $terms = preg_split('/[\s,]+/', $q);
61             common_element_start('ul', array('id' => 'notices'));
62             for ($i = 0; $i < min($cnt, NOTICES_PER_PAGE); $i++) {
63                 if ($notice->fetch()) {
64                     $this->show_notice($notice, $terms);
65                 } else {
66                     // shouldn't happen!
67                     break;
68                 }
69             }
70             common_element_end('ul');
71         } else {
72             common_element('p', 'error', _('No results'));
73         }
74
75         common_pagination($page > 1, $cnt > NOTICES_PER_PAGE,
76                           $page, 'noticesearch', array('q' => $q));
77     }
78
79     function show_header($arr)
80     {
81         if ($arr) {
82             $q = $arr[0];
83         }
84         if ($q) {
85             common_element('link', array('rel' => 'alternate',
86                                          'href' => common_local_url('noticesearchrss',
87                                                                     array('q' => $q)),
88                                          'type' => 'application/rss+xml',
89                                          'title' => _('Search Stream Feed')));
90         }
91     }
92
93     # XXX: refactor and combine with StreamAction::show_notice()
94
95     function show_notice($notice, $terms)
96     {
97         $profile = $notice->getProfile();
98         if (!$profile) {
99             common_log_db_error($notice, 'SELECT', __FILE__);
100             $this->server_error(_('Notice without matching profile'));
101             return;
102         }
103         # XXX: RDFa
104         common_element_start('li', array('class' => 'notice_single',
105                                           'id' => 'notice-' . $notice->id));
106         $avatar = $profile->getAvatar(AVATAR_STREAM_SIZE);
107         common_element_start('a', array('href' => $profile->profileurl));
108         common_element('img', array('src' => ($avatar) ? common_avatar_display_url($avatar) : common_default_avatar(AVATAR_STREAM_SIZE),
109                                     'class' => 'avatar stream',
110                                     'width' => AVATAR_STREAM_SIZE,
111                                     'height' => AVATAR_STREAM_SIZE,
112                                     'alt' =>
113                                     ($profile->fullname) ? $profile->fullname :
114                                     $profile->nickname));
115         common_element_end('a');
116         common_element('a', array('href' => $profile->profileurl,
117                                   'class' => 'nickname'),
118                        $profile->nickname);
119         # FIXME: URL, image, video, audio
120         common_element_start('p', array('class' => 'content'));
121         if ($notice->rendered) {
122             common_raw($this->highlight($notice->rendered, $terms));
123         } else {
124             # XXX: may be some uncooked notices in the DB,
125             # we cook them right now. This should probably disappear in future
126             # versions (>> 0.4.x)
127             common_raw($this->highlight(common_render_content($notice->content, $notice), $terms));
128         }
129         common_element_end('p');
130         $noticeurl = common_local_url('shownotice', array('notice' => $notice->id));
131         common_element_start('p', 'time');
132         common_element('a', array('class' => 'permalink',
133                                   'href' => $noticeurl,
134                                   'title' => common_exact_date($notice->created)),
135                        common_date_string($notice->created));
136         if ($notice->reply_to) {
137             $replyurl = common_local_url('shownotice', array('notice' => $notice->reply_to));
138             common_text(' (');
139             common_element('a', array('class' => 'inreplyto',
140                                       'href' => $replyurl),
141                            _('in reply to...'));
142             common_text(')');
143         }
144         common_element_start('a',
145                              array('href' => common_local_url('newnotice',
146                                                               array('replyto' => $profile->nickname)),
147                                    'onclick' => 'doreply("'.$profile->nickname.'"); return false',
148                                    'title' => _('reply'),
149                                    'class' => 'replybutton'));
150         common_hidden('posttoken', common_session_token());
151         
152         common_raw('&rarr;');
153         common_element_end('a');
154         common_element_end('p');
155         common_element_end('li');
156     }
157
158     function highlight($text, $terms)
159     {
160         /* Highligh serach terms */
161         $pattern = '/('.implode('|',array_map('htmlspecialchars', $terms)).')/i';
162         $result = preg_replace($pattern, '<strong>\\1</strong>', $text);
163
164         /* Remove highlighting from inside links, loop incase multiple highlights in links */
165         $pattern = '/(href="[^"]*)<strong>('.implode('|',array_map('htmlspecialchars', $terms)).')<\/strong>([^"]*")/iU';
166         do {
167             $result = preg_replace($pattern, '\\1\\2\\3', $result, -1, $count);
168         } while ($count);
169         return $result;
170     }
171 }