/**
* Create the meta keywords based on the content
*
* @package News
* @author Instant Zero (http://xoops.instant-zero.com)
* @copyright (c) Instant Zero
*/
function nw_createmeta_keywords($content)
{
include NW_MODULE_PATH . '/config.php';
include_once NW_MODULE_PATH . '/class/blacklist.php';
include_once NW_MODULE_PATH . '/class/registryfile.php';
if(!$cfg['meta_keywords_auto_generate']) {
return '';
}
$registry = new nw_registryfile('nw_metagen_options.txt');
$tcontent = '';
$tcontent = $registry->getfile();
if(xoops_trim($tcontent) != '') {
list($keywordscount, $keywordsorder) = explode(',',$tcontent);
} else {
$keywordscount = $cfg['meta_keywords_count'];
$keywordsorder = $cfg['meta_keywords_order'];
}
$tmp = array();
// Search for the "Minimum keyword length"
if(isset($_SESSION['nw_keywords_limit'])) {
$limit = $_SESSION['nw_keywords_limit'];
} else {
$config_handler =& xoops_gethandler('config');
$xoopsConfigSearch =& $config_handler->getConfigsByCat(XOOPS_CONF_SEARCH);
$limit = $xoopsConfigSearch['keyword_min'];
$_SESSION['nw_keywords_limit'] = $limit;
}
$myts =& MyTextSanitizer::getInstance();
$content = str_replace ("<br />", " ", $content);
$content= $myts->undoHtmlSpecialChars($content);
$content= strip_tags($content);
$content=strtolower($content);
$search_pattern=array(" ","\t","\r\n","\r","\n",",",".","'",";",":",")","(",'"','?','!','{','}','[',']','<','>','/','+','-','_','\\','*');
$replace_pattern=array(' ',' ',' ',' ',' ',' ',' ',' ','','','','','','','','','','','','','','','','','','','');
$content = str_replace($search_pattern, $replace_pattern, $content);
$keywords = explode(' ',$content);
switch($keywordsorder) {
case 0: // Ordre d'apparition dans le texte
$keywords = array_unique($keywords);
break;
case 1: // Ordre de fréquence des mots
$keywords = array_count_values($keywords);
asort($keywords);
$keywords = array_keys($keywords);
break;
case 2: // Ordre inverse de la fréquence des mots
$keywords = array_count_values($keywords);
arsort($keywords);
$keywords = array_keys($keywords);
break;
}
// Remove black listed words
$metablack = new nw_blacklist();
$words = $metablack->getAllKeywords();
$keywords = $metablack->remove_blacklisted($keywords);
foreach($keywords as $keyword) {
if(strlen($keyword)>=$limit && !is_numeric($keyword)) {
$tmp[] = $keyword;
}
}
$tmp = array_slice($tmp, 0, $keywordscount);
if(count($tmp) > 0) {
return implode(',',$tmp);
} else {
if(!isset($config_handler) || !is_object($config_handler)) {
$config_handler =& xoops_gethandler('config');
}
$xoopsConfigMetaFooter =& $config_handler->getConfigsByCat(XOOPS_CONF_METAFOOTER);
if(isset($xoopsConfigMetaFooter['meta_keywords'])) {
return $xoopsConfigMetaFooter['meta_keywords'];
} else {
return '';
}
}
}
/**
* Save Metagen Options
*/
function MetagenSaveOptions()
{
$registry = new nw_registryfile('nw_metagen_options.txt');
$registry->savefile(intval($_POST['keywordscount']).','.intval($_POST['keywordsorder']));
redirect_header('index.php?op=metagen', 0, _AM_NW_DBUPDATED);
}