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php-e107/e107_handlers/search_class.php
marj 9a715e8246 charset and badchars
2009-11-12 15:11:17 +00:00

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<?php
/*
* e107 website system
*
* Copyright (C) 2001-2009 e107 Inc (e107.org)
* Released under the terms and conditions of the
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)
*
*
*
* $Source: /cvs_backup/e107_0.8/e107_handlers/search_class.php,v $
* $Revision: 1.3 $
* $Date: 2009-11-12 15:11:16 $
* $Author: marj_nl_fr $
*/
if (!defined('e107_INIT')) { exit; }
class e_search {
var $query;
var $text;
var $pos;
var $bullet;
var $keywords;
var $stopwords_php = "|a|about|an|and|are|as|at|be|by|com|edu|for|from|how|i|in|is|it|of|on|or|that|the|this|to|was|what|when|where|who|will|with|the|www|";
var $stopwords_mysql = "|a|a's|able|about|above|according|accordingly|across|actually|after|afterwards|again|against|ain't|all|allow|allows|almost|alone|along|already|also|although|always|am|among|amongst|an|and|another|any|anybody|anyhow|anyone|anything|anyway|anyways|anywhere|apart|appear|appreciate|appropriate|are|aren't|around|as|aside|ask|asking|associated|at|available|away|awfully|be|became|because|become|becomes|becoming|been|before|beforehand|behind|being|believe|below|beside|besides|best|better|between|beyond|both|brief|but|by|c'mon|c's|came|can|can't|cannot|cant|cause|causes|certain|certainly|changes|clearly|co|com|come|comes|concerning|consequently|consider|considering|contain|containing|contains|corresponding|could|couldn't|course|currently|definitely|described|despite|did|didn't|different|do|does|doesn't|doing|don't|done|down|downwards|during|each|edu|eg|eight|either|else|elsewhere|enough|entirely|especially|et|etc|even|ever|every|everybody|everyone|everything|everywhere|ex|exactly|example|except|far|few|fifth|first|five|followed|following|follows|for|former|formerly|forth|four|from|further|furthermore|get|gets|getting|given|gives|go|goes|going|gone|got|gotten|greetings|had|hadn't|happens|hardly|has|hasn't|have|haven't|having|he|he's|hello|help|hence|her|here|here's|hereafter|hereby|herein|hereupon|hers|herself|hi|him|himself|his|hither|hopefully|how|howbeit|however|i|i'd|i'll|i'm|i've|ie|if|ignored|immediate|in|inasmuch|inc|indeed|indicate|indicated|indicates|inner|insofar|instead|into|inward|is|isn't|it|it'd|it'll|it's|its|itself|just|keep|keeps|kept|know|knows|known|last|lately|later|latter|latterly|least|less|lest|let|let's|like|liked|likely|little|look|looking|looks|ltd|mainly|many|may|maybe|me|mean|meanwhile|merely|might|more|moreover|most|mostly|much|must|my|myself|name|namely|nd|near|nearly|necessary|need|needs|neither|never|nevertheless|new|next|nine|no|nobody|non|none|noone|nor|normally|not|nothing|novel|now|nowhere|obviously|of|off|often|oh|ok|okay|old|on|once|one|ones|only|onto|or|other|others|otherwise|ought|our|ours|ourselves|out|outside|over|overall|own|particular|particularly|per|perhaps|php|placed|please|plus|possible|presumably|probably|provides|que|quite|qv|rather|rd|re|really|reasonably|regarding|regardless|regards|relatively|respectively|right|said|same|saw|say|saying|says|second|secondly|see|seeing|seem|seemed|seeming|seems|seen|self|selves|sensible|sent|serious|seriously|seven|several|shall|she|should|shouldn't|since|six|so|some|somebody|somehow|someone|something|sometime|sometimes|somewhat|somewhere|soon|sorry|specified|specify|specifying|still|sub|such|sup|sure|t's|take|taken|tell|tends|th|than|thank|thanks|thanx|that|that's|thats|the|their|theirs|them|themselves|then|thence|there|there's|thereafter|thereby|therefore|therein|theres|thereupon|these|they|they'd|they'll|they're|they've|think|third|this|thorough|thoroughly|those|though|three|through|throughout|thru|thus|to|together|too|took|toward|towards|tried|tries|truly|try|trying|twice|two|un|under|unfortunately|unless|unlikely|until|unto|up|upon|us|use|used|useful|uses|using|usually|value|various|very|via|viz|vs|want|wants|was|wasn't|way|we|we'd|we'll|we're|we've|welcome|well|went|were|weren't|what|what's|whatever|when|whence|whenever|where|where's|whereafter|whereas|whereby|wherein|whereupon|wherever|whether|which|while|whither|who|who's|whoever|whole|whom|whose|why|will|willing|wish|with|within|without|won't|wonder|would|would|wouldn't|yes|yet|you|you'd|you'll|you're|you've|your|yours|yourself|yourselves|zero|";
function e_search()
{
$this->query = $query;
$this->bullet = '';
if(defined('BULLET'))
{
$this->bullet = '<img src="'.THEME.'images/'.BULLET.'" alt="" class="icon" />';
}
elseif(file_exists(THEME.'images/bullet2.gif'))
{
$this->bullet = '<img src="'.THEME.'images/bullet2.gif" alt="bullet" class="icon" />';
}
preg_match_all('/(\W?".*?")|(.*?)(\s|$)/', $this -> query, $boolean_keys);
sort($this -> keywords['split'] = array_unique(array_filter(str_replace('"', '', array_merge($boolean_keys[1], $boolean_keys[2])))));
foreach ($this -> keywords['split'] as $k_key => $key) {
if (!$this -> stopword($key)) {
if ($key{(strlen($key) - 1)} == '*') {
$this -> keywords['wildcard'][$k_key] = TRUE;
$key = substr($key, 0, -1);
} else {
$this -> keywords['wildcard'][$k_key] = FALSE;
}
if ($key{0} == '+') {
$this -> keywords['boolean'][$k_key] = '+';
$this -> keywords['match'][$k_key] = substr($key, 1);
} else if ($key{0} == '-') {
$this -> keywords['boolean'][$k_key] = '-';
$this -> keywords['match'][$k_key] = substr($key, 1);
} else {
$this -> keywords['boolean'][$k_key] = FALSE;
$this -> keywords['match'][$k_key] = $key;
}
$this -> keywords['exact'][$k_key] = (strpos($key, ' ') !== FALSE) ? TRUE : FALSE;
$this -> keywords['match'][$k_key] = $tp -> toDB($this -> keywords['match'][$k_key]);
} else {
unset ($this -> keywords['split'][$k_key]);
}
}
}
function parsesearch($table, $return_fields, $search_fields, $weights, $handler, $no_results, $where, $order) {
global $sql, $query, $tp, $search_prefs, $pre_title, $search_chars, $search_res, $result_flag;
$this -> query = $tp -> toDB($query);
if (!$search_prefs['mysql_sort']) {
$field_operator = 'AND ';
foreach ($this -> keywords['match'] as $k_key => $key) {
$boolean_regex = '';
if ($this -> keywords['boolean'][$k_key] == '+') {
$key_operator = 'OR ';
$break = TRUE;
$no_exact = TRUE;
} else if ($this -> keywords['boolean'][$k_key] == '-') {
foreach ($this -> keywords as $unset_key => $unset_value) {
unset($this -> keywords[$unset_key][$k_key]);
}
$key_operator = 'AND ';
$boolean_regex = 'NOT';
$no_exact = TRUE;
} else if (!isset($break)) {
$key_operator = 'OR ';
if (isset($switch)) {
$field_operator = 'OR ';
}
$switch = TRUE;
} else {
break;
}
$match_query .= isset($uninitial_field) ? " ".$field_operator." (" : "(";
$uninitial_field = TRUE;
if ($this -> keywords['wildcard'][$k_key] || !$search_prefs['boundary']) {
$wildcard = '';
} else {
$wildcard = '[[:>:]]';
}
$key_count = 1;
foreach ($search_fields as $field) {
$regexp = $search_prefs['boundary'] ? "[[:<:]]".$key.$wildcard : $key;
$match_query .= " ".$field." ".$boolean_regex." REGEXP '".$regexp."' ";
if ($key_count != count($search_fields)) {
$match_query .= $key_operator;
}
$key_count++;
}
$match_query .= ")";
}
if ($order) {
$sql_order = 'ORDER BY ';
$order_count = count($order);
$i = 1;
foreach ($order as $sort_key => $sort_value) {
$sql_order .= $sort_key.' '.$sort_value;
if ($i != $order_count) {
$sql_order .= ', ';
}
$i++;
}
} else {
$sql_order = '';
}
$limit = $search_prefs['php_limit'] ? ' LIMIT 0,'.$search_prefs['php_limit'] : '';
$sql_query = "SELECT ".$return_fields." FROM #".$table." WHERE ".$where." (".$match_query.") ".$sql_order.$limit.";";
if ((($keycount = count($this -> keywords['split'])) > 1) && (strpos($query, '"') === FALSE) && (!isset($no_exact))) {
$exact_query[] = $query;
$this -> keywords['split'] = array_merge($exact_query, $this -> keywords['split']);
}
} else {
$this -> query = str_replace('&quot;', '"', $this -> query);
$field_query = implode(',', $search_fields);
foreach ($search_fields as $field_key => $field) {
$search_query[] = "(".$weights[$field_key]." * (MATCH(".$field.") AGAINST ('".$this -> query."' IN BOOLEAN MODE)))";
}
$match_query = implode(' + ', $search_query);
$sql_order = '';
foreach ($order as $sort_key => $sort_value) {
$sql_order .= ', '.$sort_key.' '.$sort_value;
}
$limit = " LIMIT ".$result_flag.",".$search_res;
$sql_query = "SELECT SQL_CALC_FOUND_ROWS ".$return_fields.", (".$match_query.") AS relevance FROM #".$table." WHERE ".$where." ( MATCH(".$field_query.") AGAINST ('".$this -> query."' IN BOOLEAN MODE) ) HAVING relevance > 0 ORDER BY relevance DESC ".$sql_order.$limit.";";
}
if ($ps['results'] = $sql -> db_Select_gen($sql_query)) {
if (!$search_prefs['mysql_sort']) {
$x = 0;
foreach ($search_fields as $field_key => $field) {
$crop_fields[] = preg_replace('/(.*?)\./', '', $field);
}
while ($row = $sql -> db_Fetch()) {
$weight = 0;
foreach ($crop_fields as $field_key => $field) {
$this -> text = $row[$field];
foreach ($this -> keywords['match'] as $k_key => $this -> query) {
if (stristr($this -> text, $this -> query) !== FALSE) {
if ($this -> keywords['exact'][$k_key] || $this -> keywords['boolean'][$k_key]) {
$weight += (($weights[$field_key] * 2) * ($keycount));
$endweight = TRUE;
} else if (!$endweight) {
$weight += $weights[$field_key];
}
}
}
$endweight = FALSE;
}
foreach ($row as $r_key => $r_value) {
$qrow[$x][$r_key] = $r_value;
$qrow[$x]['relevance'] = $weight;
$qrow[$x]['search_id'] = $x;
}
$x++;
}
foreach($qrow as $info) {
$sortarr[] = $info['relevance'];
}
array_multisort($sortarr, SORT_DESC, $qrow, SORT_DESC);
$result_number = ($x < ($result_flag + $search_res)) ? $x : $result_flag + $search_res;
for ($i = $result_flag; $i < $result_number; $i++) {
$display_row[] = $qrow[$i];
}
} else {
$x = 0;
while ($row = $sql -> db_Fetch()) {
$display_row[] = $row;
$x++;
}
}
foreach ($display_row as $row) {
$res = call_user_func($handler, $row);
if (!$res['omit_result']) {
$matches = array($res['title'], $res['summary']);
$endcrop = FALSE;
$output = '';
$title = TRUE;
foreach ($matches as $this -> text) {
$this -> text = nl2br($this -> text);
$t_search = $tp -> search;
$t_replace = $tp -> replace;
$s_search = array('<br />', '[', ']');
$s_replace = array(' ', '<', '>');
$search = array_merge($t_search, $s_search);
$replace = array_merge($t_replace, $s_replace);
$this -> text = strip_tags(str_replace($search, $replace, $this -> text));
foreach ($this -> keywords['match'] as $match_id => $this -> query) {
$boundary = $search_prefs['boundary'] ? '\b' : '';
if ($this -> keywords['wildcard'][$match_id]) {
$regex_append = ".*?".$boundary.")";
} else {
$regex_append = $boundary.")";
}
if (($match_start = stristr($this -> text, $this -> query)) !== FALSE) {
$this -> pos = strlen($this -> text) - strlen($match_start);
if (!$endcrop && !$title) {
$this -> parsesearch_crop();
$endcrop = TRUE;
}
$key = substr($this -> text, $this -> pos, strlen($this -> query));
$this -> text = preg_replace("#(".$boundary.$this -> query.$regex_append."#i", "<span class='searchhighlight'>\\1</span>", $this -> text);
}
}
if ($title) {
if ($pre_title == 0) {
$pre_title_output = "";
} else if ($pre_title == 1) {
$pre_title_output = $res['pre_title'];
} else if ($pre_title == 2) {
$pre_title_output = $pre_title;
}
$this -> text = $this -> bullet." <b><a class='visit' href='".$res['link']."'>".$pre_title_output.$this -> text."</a></b><br />".$res['pre_summary'];
} else if (!$endcrop) {
$this -> parsesearch_crop();
}
$output .= $this -> text;
$title = FALSE;
}
$display_rel = $search_prefs['relevance'] ? " | ".LAN_SEARCH_69.": ".round($row['relevance'], 1) : "";
$output_array['text'][] = $output.$res['post_summary']."<br /><span class='smalltext'>".$res['detail'].$display_rel."</span><br /><br />";
} else {
$ps['results']--;
$res['omit_result'] = FALSE;
}
}
$ps_limit = $output_array['text'];
$result_number = ($x < $search_res) ? $x : $search_res;
for ($i = 0; $i < $result_number; $i++) {
$ps['text'] .= $ps_limit[$i];
}
} else {
$ps['text'] = $no_results;
}
if ($search_prefs['mysql_sort']) {
$sql -> db_Query("SELECT FOUND_ROWS()");
$frows = $sql -> db_Fetch();
$ps['results'] = $frows[0];
}
return $ps;
}
function parsesearch_crop() {
global $search_chars;
if (strlen($this -> text) > $search_chars) {
if ($this -> pos < ($search_chars - strlen($this -> query))) {
$this -> text = substr($this -> text, 0, $search_chars)."...";
} else if ($this -> pos > (strlen($this -> text) - ($search_chars - strlen($this -> query)))) {
$this -> text = "...".substr($this -> text, (strlen($this -> text) - ($search_chars - strlen($this -> query))));
} else {
$this -> text = "...".substr($this -> text, ($this -> pos - round(($search_chars / 3))), $search_chars)."...";
}
$match_start = stristr($this -> text, $this -> query);
$this -> pos = strlen($this -> text) - strlen($match_start);
}
}
function stopword($key) {
global $search_prefs;
if ($search_prefs['mysql_sort'] && ($key{0} == '+')) {
$key = substr($key, 1);
}
if (($key{(strlen($key) - 1)} != '*') && ($key{0} != '+')) {
if (strlen($key) > 2) {
if ($search_prefs['mysql_sort']) {
$stopword_list = $this -> stopwords_mysql;
} else {
$stopword_list = $this -> stopwords_php;
}
if (strpos($stopword_list, '|'.$key.'|') !== FALSE) {
$this -> stop_keys[] = $key;
return TRUE;
} else {
return FALSE;
}
} else {
$this -> stop_keys[] = $key;
return TRUE;
}
} else {
return FALSE;
}
}
}
?>
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