gnu-social/actions/peoplesearch.php

<?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); }

require_once(INSTALLDIR.'/lib/searchaction.php');
require_once(INSTALLDIR.'/lib/profilelist.php');

class PeoplesearchAction extends SearchAction {

	function get_instructions() {
		return _('Search for people on %%site.name%% by their name, location, or interests. ' .
				  'Separate the terms by spaces; they must be 3 characters or more.');
	}

	function get_title() {
		return _('People search');
	}

	function show_results($q, $page) {

		$profile = new Profile();

		# lcase it for comparison
		$q = strtolower($q);

		if(common_config('db','type')=='mysql') {
			$profile->whereAdd('MATCH(nickname, fullname, location, bio, homepage) ' .
						   'against (\''.addslashes($q).'\')');
		} else {
			$profile->whereAdd('textsearch @@ plainto_tsquery(\''.addslashes($q).'\')');
		}

		# Ask for an extra to see if there's more.

		$profile->limit((($page-1)*PROFILES_PER_PAGE), PROFILES_PER_PAGE + 1);

		$cnt = $profile->find();

		if ($cnt > 0) {
			$terms = preg_split('/[\s,]+/', $q);
			$results = new PeopleSearchResults($profile, $terms);
			$results->show_list();
		} else {
			common_element('p', 'error', _('No results'));
		}

		$profile->free();
		
		common_pagination($page > 1, $cnt > PROFILES_PER_PAGE,
						  $page, 'peoplesearch', array('q' => $q));
	}
}

class PeopleSearchResults extends ProfileList {

	var $terms = NULL;
	var $pattern = NULL;
	
	function __construct($profile, $terms) {
		parent::__construct($profile);
		$this->terms = array_map('preg_quote', 
								 array_map('htmlspecialchars', $terms));
		$this->pattern = '/('.implode('|',$terms).')/i';
	}
	
	function highlight($text) {
		return preg_replace($this->pattern, '<strong>\\1</strong>', htmlspecialchars($text));
	}
}