mirror of
https://github.com/moodle/moodle.git
synced 2025-01-19 06:18:28 +01:00
346 lines
11 KiB
PHP
346 lines
11 KiB
PHP
<?php
|
|
/**
|
|
* Global Search Engine for Moodle
|
|
* Michael Champanis (mchampan) [cynnical@gmail.com]
|
|
* review 1.8+ : Valery Fremaux [valery.fremaux@club-internet.fr]
|
|
* 2007/08/02
|
|
*
|
|
* The query page - accepts a user-entered query string and returns results.
|
|
*
|
|
* Queries are boolean-aware, e.g.:
|
|
*
|
|
* '+' term required
|
|
* '-' term must not be present
|
|
* '' (no modifier) term's presence increases rank, but isn't required
|
|
* 'field:' search this field
|
|
*
|
|
* Examples:
|
|
*
|
|
* 'earthquake +author:michael'
|
|
* Searches for documents written by 'michael' that contain 'earthquake'
|
|
*
|
|
* 'earthquake +doctype:wiki'
|
|
* Search all wiki pages for 'earthquake'
|
|
*
|
|
* '+author:helen +author:foster'
|
|
* All articles written by Helen Foster
|
|
*
|
|
*/
|
|
|
|
require_once('../config.php');
|
|
require_once("$CFG->dirroot/search/lib.php");
|
|
|
|
if ($CFG->forcelogin) {
|
|
require_login();
|
|
}
|
|
|
|
if (empty($CFG->enableglobalsearch)) {
|
|
error(get_string('globalsearchdisabled', 'search'));
|
|
}
|
|
|
|
$adv = new Object();
|
|
|
|
// check for php5, but don't die yet (see line 52)
|
|
if ($check = search_check_php5()) {
|
|
require_once("{$CFG->dirroot}/search/querylib.php");
|
|
|
|
$page_number = optional_param('page', -1, PARAM_INT);
|
|
$pages = ($page_number == -1) ? false : true;
|
|
$advanced = (optional_param('a', '0', PARAM_INT) == '1') ? true : false;
|
|
$query_string = optional_param('query_string', '', PARAM_CLEAN);
|
|
|
|
if ($pages && isset($_SESSION['search_advanced_query'])) {
|
|
// if both are set, then we are busy browsing through the result pages of an advanced query
|
|
$adv = unserialize($_SESSION['search_advanced_query']);
|
|
}
|
|
else if ($advanced) {
|
|
// otherwise we are dealing with a new advanced query
|
|
unset($_SESSION['search_advanced_query']);
|
|
session_unregister('search_advanced_query');
|
|
|
|
// chars to strip from strings (whitespace)
|
|
$chars = " \t\n\r\0\x0B,-+";
|
|
|
|
// retrieve advanced query variables
|
|
$adv->mustappear = trim(optional_param('mustappear', '', PARAM_CLEAN), $chars);
|
|
$adv->notappear = trim(optional_param('notappear', '', PARAM_CLEAN), $chars);
|
|
$adv->canappear = trim(optional_param('canappear', '', PARAM_CLEAN), $chars);
|
|
$adv->module = optional_param('module', '', PARAM_CLEAN);
|
|
$adv->title = trim(optional_param('title', '', PARAM_CLEAN), $chars);
|
|
$adv->author = trim(optional_param('author', '', PARAM_CLEAN), $chars);
|
|
}
|
|
|
|
if ($advanced) {
|
|
//parse the advanced variables into a query string
|
|
//TODO: move out to external query class (QueryParse?)
|
|
|
|
$query_string = '';
|
|
|
|
// get all available module types
|
|
$module_types = array_merge(array('all'), array_values(search_get_document_types()));
|
|
$adv->module = in_array($adv->module, $module_types) ? $adv->module : 'all';
|
|
|
|
// convert '1 2' into '+1 +2' for required words field
|
|
if (strlen(trim($adv->mustappear)) > 0) {
|
|
$query_string = ' +'.implode(' +', preg_split("/[\s,;]+/", $adv->mustappear));
|
|
}
|
|
|
|
// convert '1 2' into '-1 -2' for not wanted words field
|
|
if (strlen(trim($adv->notappear)) > 0) {
|
|
$query_string .= ' -'.implode(' -', preg_split("/[\s,;]+/", $adv->notappear));
|
|
}
|
|
|
|
// this field is left untouched, apart from whitespace being stripped
|
|
if (strlen(trim($adv->canappear)) > 0) {
|
|
$query_string .= ' '.implode(' ', preg_split("/[\s,;]+/", $adv->canappear));
|
|
}
|
|
|
|
// add module restriction
|
|
$doctypestr = get_string('doctype', 'search');
|
|
$titlestr = get_string('title', 'search');
|
|
$authorstr = get_string('author', 'search');
|
|
if ($adv->module != 'all') {
|
|
$query_string .= " +{$doctypestr}:".$adv->module;
|
|
}
|
|
|
|
// create title search string
|
|
if (strlen(trim($adv->title)) > 0) {
|
|
$query_string .= " +{$titlestr}:".implode(" +{$titlestr}:", preg_split("/[\s,;]+/", $adv->title));
|
|
}
|
|
|
|
// create author search string
|
|
if (strlen(trim($adv->author)) > 0) {
|
|
$query_string .= " +{$authorstr}:".implode(" +{$authorstr}:", preg_split("/[\s,;]+/", $adv->author));
|
|
}
|
|
|
|
// save our options if the query is valid
|
|
if (!empty($query_string)) {
|
|
$_SESSION['search_advanced_query'] = serialize($adv);
|
|
}
|
|
}
|
|
|
|
// normalise page number
|
|
if ($page_number < 1) {
|
|
$page_number = 1;
|
|
}
|
|
|
|
//run the query against the index
|
|
$sq = new SearchQuery($query_string, $page_number, 10, false);
|
|
}
|
|
|
|
if (!$site = get_site()) {
|
|
redirect("index.php");
|
|
}
|
|
|
|
$strsearch = get_string('search', 'search');
|
|
$strquery = get_string('enteryoursearchquery', 'search');
|
|
|
|
$navlinks[] = array('name' => $strsearch, 'link' => "index.php", 'type' => 'misc');
|
|
$navlinks[] = array('name' => $strquery, 'link' => null, 'type' => 'misc');
|
|
$navigation = build_navigation($navlinks);
|
|
$site = get_site();
|
|
print_header("$strsearch", "$site->fullname" , $navigation, "", "", true, " ", navmenu($site));
|
|
|
|
//keep things pretty, even if php5 isn't available
|
|
if (!$check) {
|
|
print_heading(search_check_php5(true));
|
|
print_footer();
|
|
exit(0);
|
|
}
|
|
|
|
print_box_start();
|
|
print_heading($strquery);
|
|
|
|
print_box_start();
|
|
|
|
$vars = get_object_vars($adv);
|
|
|
|
if (isset($vars)) {
|
|
foreach ($vars as $key => $value) {
|
|
// htmlentities breaks non-ascii chars
|
|
$adv->key = stripslashes($value);
|
|
//$adv->$key = stripslashes(htmlentities($value));
|
|
}
|
|
}
|
|
?>
|
|
|
|
<form id="query" method="get" action="query.php">
|
|
<?php
|
|
if (!$advanced) {
|
|
?>
|
|
<input type="text" name="query_string" length="50" value="<?php print stripslashes($query_string) ?>" />
|
|
<input type="submit" value="<?php print_string('search', 'search') ?>" />
|
|
<a href="query.php?a=1"><?php print_string('advancedsearch', 'search') ?></a> |
|
|
<a href="stats.php"><?php print_string('statistics', 'search') ?></a>
|
|
<?php
|
|
}
|
|
else {
|
|
print_box_start();
|
|
?>
|
|
<input type="hidden" name="a" value="<?php print $advanced; ?>"/>
|
|
|
|
<table border="0" cellpadding="3" cellspacing="3">
|
|
|
|
<tr>
|
|
<td width="240"><?php print_string('thesewordsmustappear', 'search') ?>:</td>
|
|
<td><input type="text" name="mustappear" length="50" value="<?php print $adv->mustappear; ?>" /></td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td><?php print_string('thesewordsmustnotappear', 'search') ?>:</td>
|
|
<td><input type="text" name="notappear" length="50" value="<?php print $adv->notappear; ?>" /></td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td><?php print_string('thesewordshelpimproverank', 'search') ?>:</td>
|
|
<td><input type="text" name="canappear" length="50" value="<?php print $adv->canappear; ?>" /></td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td><?php print_string('whichmodulestosearch?', 'search') ?>:</td>
|
|
<td>
|
|
<select name="module">
|
|
<?php
|
|
foreach($module_types as $mod) {
|
|
if ($mod == $adv->module) {
|
|
if ($mod != 'all'){
|
|
print "<option value='$mod' selected=\"selected\">".get_string('modulenameplural', $mod)."</option>\n";
|
|
}
|
|
else{
|
|
print "<option value='$mod' selected=\"selected\">".get_string('all', 'search')."</option>\n";
|
|
}
|
|
}
|
|
else {
|
|
if ($mod != 'all'){
|
|
print "<option value='$mod'>".get_string('modulenameplural', $mod)."</option>\n";
|
|
}
|
|
else{
|
|
print "<option value='$mod'>".get_string('all', 'search')."</option>\n";
|
|
}
|
|
}
|
|
}
|
|
?>
|
|
</select>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td><?php print_string('wordsintitle', 'search') ?>:</td>
|
|
<td><input type="text" name="title" length="50" value="<?php print $adv->title; ?>" /></td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td><?php print_string('authorname', 'search') ?>:</td>
|
|
<td><input type="text" name="author" length="50" value="<?php print $adv->author; ?>" /></td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td colspan="3" align="center"><br /><input type="submit" value="<?php print_string('search', 'search') ?>" /></td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td colspan="3" align="center">
|
|
<table border="0" cellpadding="0" cellspacing="0">
|
|
<tr>
|
|
<td><a href="query.php"><?php print_string('normalsearch', 'search') ?></a> |</td>
|
|
<td> <a href="stats.php"><?php print_string('statistics', 'search') ?></a></td>
|
|
</tr>
|
|
</table>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
<?php
|
|
print_box_end();
|
|
}
|
|
?>
|
|
</form>
|
|
<br/>
|
|
|
|
<div align="center">
|
|
<?php
|
|
print_string('searching', 'search') . ': ';
|
|
|
|
if ($sq->is_valid_index()) {
|
|
//use cached variable to show up-to-date index size (takes deletions into account)
|
|
print $CFG->search_index_size;
|
|
}
|
|
else {
|
|
print "0";
|
|
}
|
|
|
|
print ' ';
|
|
print_string('documents', 'search');
|
|
print '.';
|
|
|
|
if (!$sq->is_valid_index() and isadmin()) {
|
|
print '<p>' . get_string('noindexmessage', 'search') . '<a href="indexersplash.php">' . get_string('createanindex', 'search')."</a></p>\n";
|
|
}
|
|
|
|
?>
|
|
</div>
|
|
<?php
|
|
print_box_end();
|
|
|
|
// prints all the results in a box
|
|
if ($sq->is_valid()) {
|
|
print_box_start();
|
|
|
|
search_stopwatch();
|
|
$hit_count = $sq->count();
|
|
|
|
print "<br />";
|
|
|
|
print $hit_count.' '.get_string('resultsreturnedfor', 'search') . " '".stripslashes($query_string)."'.";
|
|
print "<br />";
|
|
|
|
if ($hit_count > 0) {
|
|
$page_links = $sq->page_numbers();
|
|
$hits = $sq->results();
|
|
|
|
if ($advanced) {
|
|
// if in advanced mode, search options are saved in the session, so
|
|
// we can remove the query string var from the page links, and replace
|
|
// it with a=1 (Advanced = on) instead
|
|
$page_links = preg_replace("/query_string=[^&]+/", 'a=1', $page_links);
|
|
}
|
|
|
|
print "<ol>";
|
|
|
|
$typestr = get_string('type', 'search');
|
|
$scorestr = get_string('score', 'search');
|
|
$authorstr = get_string('author', 'search');
|
|
foreach ($hits as $listing) {
|
|
//if ($CFG->unicodedb) {
|
|
//$listing->title = mb_convert_encoding($listing->title, 'auto', 'UTF8');
|
|
//}
|
|
$title_post_processing_function = $listing->doctype.'_link_post_processing';
|
|
require_once "{$CFG->dirroot}/search/documents/{$listing->doctype}_document.php";
|
|
if (function_exists($title_post_processing_function)) {
|
|
$listing->title = $title_post_processing_function($listing->title);
|
|
}
|
|
|
|
print "<li value='".($listing->number+1)."'><a href='".str_replace('DEFAULT_POPUP_SETTINGS', DEFAULT_POPUP_SETTINGS ,$listing->url)."'>$listing->title</a><br />\n"
|
|
."<em>".search_shorten_url($listing->url, 70)."</em><br />\n"
|
|
."{$typestr}: ".$listing->doctype.", {$scorestr}: ".round($listing->score, 3).", {$authorstr}: ".$listing->author."\n"
|
|
."</li>\n";
|
|
}
|
|
|
|
print "</ol>";
|
|
print $page_links;
|
|
}
|
|
|
|
print_box_end();
|
|
?>
|
|
<div align="center">
|
|
<?php
|
|
print_string('ittook', 'search');
|
|
search_stopwatch();
|
|
print_string('tofetchtheseresults', 'search');
|
|
?>.
|
|
</div>
|
|
|
|
<?php
|
|
}
|
|
print_box_end();
|
|
print_footer();
|
|
?>
|