<?php
/*
Plugin Name: Search_Hilite
Plugin URI: http://www.blog.mediaprojekte.de/cms-systeme/wordpress/wordpress-plugin-search-hilite/
Description: When someone is referred from a search engine like Google, Yahoo, or WordPress' own, the searchterms are highlighted. You can set the markup-style in Options pages or in your own css. /original Version 1.5 by <a href="http://dev.wp-plugins.org/file/google-highlight/>Ryan Boren </a>. Support for Chinese Language Added by Xuefeng Li
Version: 1.9
Author: Georg Leciejewski
Author URI: http://www.blog.mediaprojekte.de
*/
define("SEARCHHILITE", "190");
/**
* @desc get search terms as array
* @author Georg Leciejewski
*/
function get_search_query_terms($engine = 'google') {
$referer = urldecode($_SERVER['HTTP_REFERER']);
$query_array = array();
switch ($engine) {
case 'google':
// Google query parsing code adapted from Dean Allen's
// Google Hilite 0.3. http://textism.com
$query_terms = preg_replace('/^.*q=([^&]+)&?.*$/i','$1', $referer);
$query_terms = preg_replace('/\'|"/', '', $query_terms);
$query_array = preg_split ("/[\s,\+\.]+/", $query_terms);
break;
//added by Xuefeng Li
case 'baidu':
// My server don't support iconv function, so i had to use another function gb2utf8 to replace it.
//$referer = iconv('gb2312', 'utf-8', $referer);
$referer = gb2utf8($referer);
$query_terms = preg_replace('/^.*(wd=|word=)([^&]+)&?.*$/i','$2', $referer);
$query_terms = preg_replace('/\'|"/', '', $query_terms);
$query_array = preg_split ("/[\s,\+\.]+/", $query_terms);
break;
case 'lycos':
$query_terms = preg_replace('/^.*query=([^&]+)&?.*$/i','$1', $referer);
$query_terms = preg_replace('/\'|"/', '', $query_terms);
$query_array = preg_split ("/[\s,\+\.]+/", $query_terms);
break;
case 'yahoo':
$query_terms = preg_replace('/^.*p=([^&]+)&?.*$/i','$1', $referer);
$query_terms = preg_replace('/\'|"/', '', $query_terms);
$query_array = preg_split ("/[\s,\+\.]+/", $query_terms);
break;
case 'wordpress':
$search = get_query_var('s');
$search_terms = get_query_var('search_terms');
if (!empty($search_terms)) {
$query_array = $search_terms;
} else if (!empty($search)) {
$query_array = array($search);
} else if (empty($search)) {
//do nothing man
} else {
$query_terms = preg_replace('/^.*s=([^&]+)&?.*$/i','$1', $referer);
$query_terms = preg_replace('/\'|"/', '', $query_terms);
$query_array = preg_split ("/[\s,\+\.]+/", $query_terms);
}
}
return $query_array;
}
/**
* @desc get textfile to make chinese character conversion
* @author Xuefeng Li
*/
function gb2utf8($text) {
$charset[0]=0;
$filename = dirname(__FILE__).'/'."gb2utf8.txt";
$fp = fopen($filename,"r");
while(! feof($fp)) {
list($gb,$utf8) = fgetcsv($fp,10);
$charset[$gb] = $utf8;
}
fclose($fp);
preg_match_all("/(?:[\x80-\xff].)|[\x01-\x7f]+/",$text,$tmp);
$tmp = $tmp[0];
$ar = array_intersect($tmp, array_keys($charset));
foreach($ar as $k=>$v)
$tmp[$k] = $charset[$v];
return join('',$tmp);
}
/**
* @desc check from which searchengine
* @author Georg Leciejewski
*/
function is_referer_search_engine($engine = 'google') {
if( empty($_SERVER['HTTP_REFERER']) && 'wordpress' != $engine ) {
return false;
}
$referer = urldecode($_SERVER['HTTP_REFERER']);
if ( ! $engine ) {
return false;
}
switch ($engine) {
case 'google':
if (preg_match('|^http://(www)?\.?google.*|i', $referer)) {
return true;
}
break;
case 'lycos':
if (preg_match('|^http://search\.lycos.*|i', $referer)) {
return true;
}
break;
case 'yahoo':
if (preg_match('|^http://search\.yahoo.*|i', $referer)) {
return true;
}
break;
//added by Xuefeng Li
case 'baidu':
if (preg_match('|^http://(www)?\.?baidu.com|i', $referer)) {
return true;
}
break;
case 'wordpress':
if ( is_search() )
return true;
$siteurl = get_option('home');
if (preg_match("#^$siteurl#i", $referer))
return true;
break;
}
return false;
}
/**
* @desc Hiliting Conversion
* @author Georg Leciejewski
*/
function hilite($text)
{
$search_engines = array('wordpress', 'google', 'lycos', 'yahoo', 'baidu');
$loopcounter=0;
foreach ($search_engines as $engine)
{
if ( is_referer_search_engine($engine))
{
$query_terms = get_search_query_terms($engine);
foreach ($query_terms as $term)
{
if ( !empty($term) && $term != ' ' && strlen($term) >= 3 )
{
$loopcounter++;
if ( $loopcounter == 1) $hilite_class='hilite';
elseif($loopcounter == 2) $hilite_class='hilite1';
elseif($loopcounter == 3) $hilite_class='hilite2';
elseif($loopcounter == 4) $hilite_class='hilite3';
$qterm = preg_quote($term, '/');
if ( preg_match("/<[^>]*?>/s",$text) != 0 )
$text = preg_replace('/('.$qterm.')/i','<span class="'.$hilite_class.'">$1</span>',$text);
else
{
$regex = '/(>[^<>]*?)('.$qterm.')([^>]*?<)/i';
error_log( htmlspecialchars($text) );
error_log( "regex='$regex',qterm='$qterm'" );
$text = preg_replace($regex,'$1<span class="'.$hilite_class.'">$2</span>$3',$text);
/* (?![^<]*?>) */
// $text = preg_replace('/(?<=>)([^<]+)?('.$term.')/i','$1<span class="'.$hilite_class.'">$2</span>',$text); //taken out the \b option to also mark substrings
}
}
}
break;
}
}
return $text;
}
/**
* @desc insert hilite css into head
* @author Georg Leciejewski
*/
function hilite_head() {
$css = search_hilite_getCss();
if(get_option('search_hilite_use_own_css')=='1')
{
}
elseif (!empty ($css) )
{
echo $css ;
}else{
echo "
<style type='text/css'>
.hilite {
color: #000;
background-color: #99ccff;
}
.hilite1 {
color: #000;
background-color: #ffcc66;
}
.hilite2 {
color: #000;
background-color: #99ff66;
}
.hilite3 {
color: #000;
background-color: #ff9999;
}
</style>";
}
}
/**
* @desc Admin menu Page
* @author Georg Leciejewski
*/
function search_hilite_options() {
if($_POST['search_hilite_options_save']){
update_option('search_hilite_css',$_POST['search_hilite_css']);
update_option('search_hilite_use_own_css',$_POST['search_hilite_use_own_css']);
echo '<div class="updated"><p>'. __('Search Hilite Options successfully saved.','searchHilite') .'</p></div>';
}
?>
<div class="wrap">
<h2><?php _e('Search Hilite CSS Options','searchHilite') ?> </h2>
<form method="post" id="search_hilite_options" action="">
<fieldset class="options">
<legend><?php _e('Insert your own Hilite CSS Style','searchHilite') ?></legend>
<table width="100%" cellspacing="2" cellpadding="5" class="editform">
<tr valign="top">
<th width="33%" scope="row"><?php _e('take CSS Style from my Stylesheet:','searchHilite') ?></th>
<td>
<input type="checkbox" name="search_hilite_use_own_css" value='1' <?php if(get_option('search_hilite_use_own_css')=='1') { echo "checked='checked'"; } ?> >
<br /><?php _e('Should be set if you inserted the hilite style in your existing css. If not set and Style Field below is empty. The default style (example) will be used.
','searchHilite') ?>
</td>
</tr>
<tr valign="top">
<th width="33%" scope="row"><?php _e('CSS Style:','searchHilite') ?></th>
<td>
<textarea rows="10" cols="30" name="search_hilite_css" tabindex="4" id="search_hilite_css"><?php echo stripslashes(get_option('search_hilite_css')) ; ?>
</textarea>
<br /><br /><strong><?php _e('Example:','searchHilite') ?></strong> <br />
<?php _e('CSS Style:','searchHilite') ?>
<?php
echo "<br />
<style type='text/css'><br />
.hilite {<br />
color: #000;<br />
background-color: #;<br />
}<br />
.hilite1 {<br />
color: #000;<br />
background-color: #99FF99;<br />
}<br />
.hilite2 {<br />
color: #000;<br />
background-color: #FFFF66;<br />
}<br />
.hilite3 {<br />
color: #000;<br />
background-color: #FF66FF;<br />
}<br />
</style>
";
?>
</td>
</tr>
</table>
<p class="submit"><input type="submit" name="search_hilite_options_save" value="Save" /></p>
</fieldset>
</form>
</div>
<?php
}
/**
* @desc get search_hilite_css
* @author Georg Leciejewski
*/
function search_hilite_getCss(){
if($css = get_option('search_hilite_css')){
$css = stripslashes($css) ;
return $css;
}
}
/**
* @desc look for old google_hilite_css option and removes them just for security if someone uses the old plugin
* @author Georg Leciejewski
*/
function search_hilite_install(){
if(get_option('google_hilite_css')){
delete_option ('google_hilite_css');
}
add_option('search_hilite_css', " <style type='text/css'>
.hilite {
color: #000;
background-color: #99ccff;
}
.hilite1 {
color: #000;
background-color: #ffcc66;
}
.hilite2 {
color: #000;
background-color: #99ff66;
}
.hilite3 {
color: #000;
background-color: #ff9999;
}
</style>");
add_option('search_hilite_use_own_css', "0");
}
/**
* @desc Admin Menu hook
* @author Georg Leciejewski
*/
function search_hilite_adminmenu(){
add_options_page('Search Hilite Options', 'Search Hilite', 9, 'search-hilite.php', 'search_hilite_options');
}
/**
* @desc Remote Version checking
* @author georg leciejewski / Per Soderlind
* @param string $widgetname full Widgetname ie: King_Text_Widget
* @param int $localversion widget Version Number
*/
function search_hilite_remote_version_check($widgetname,$localversion) {
require_once(ABSPATH . WPINC . '/class-snoopy.php');
if (class_exists(snoopy)) {
$client = new Snoopy();
$client->_fp_timeout = 10;
if (@$client->fetch('http://website-king.com/versiontrack/'.$widgetname.'.txt') === false) {
return -1;
}
$remote = $client->results;
if (!$remote || strlen($remote) > 8 ) {
return -1;
}
if (intval($remote) > intval($localversion)) {
return 1;
} else {
return 0;
}
}
}
/**
* @desc Admin Header for Version Check on Pluginpage
* @author georg leciejewski / Per Soderlind
* @param string $widgetname full Widgetname ie: King_Text_Widget
* @param int $localversion widget Version Number
*/
function search_hilite_admin_head($widgetname,$localversion) {
load_plugin_textdomain('searchHilite');
if ((strpos($_SERVER['REQUEST_URI'], 'plugins.php') !== false) && (search_hilite_remote_version_check($widgetname,$localversion) == 1)) {
echo "<script type='text/javascript' src='" . get_settings('siteurl') . "/wp-content/plugins/king-includes/js/prototype-1.4.0.js'></script>\n";
$alert = "\n";
$alert .= "\n<script type='text/javascript'>";
$alert .= "\n//<![CDATA[";
$alert .= "\nfunction alertNewVersion" . $widgetname . "() {";
$alert .= "\n pluginname = '" . $widgetname . "';";
$alert .= "\n allNodes = document.getElementsByClassName('name');";
$alert .= "\n for(i = 0; i < allNodes.length; i++) {";
$alert .= "\n var regExp=/<\S[^>]*>/g;";
$alert .= "\n temp = allNodes[i].innerHTML;";
$alert .= "\n if (temp.replace(regExp,'') == pluginname) {";
$alert .= "\n Element.setStyle(allNodes[i].getElementsByTagName('a')[0], {color: '#f00'});";
$alert .= "\n new Insertion.After(allNodes[i].getElementsByTagName('strong')[0],'<br/><small>" . __("new version available","widgetKing") . "</small>');";
$alert .= "\n }";
$alert .= "\n }";
$alert .= "\n}";
$alert .= "\naddLoadEvent(alertNewVersion" . $widgetname . ");";
$alert .= "\n//]]>";
$alert .= "\n</script>";
$alert .= "\n";
echo $alert;
}
}
/**
* @desc Version Check Heading
* @author Georg Leciejewski
*/
function search_hilite_version() {
search_hilite_admin_head('Search_Hilite',SEARCHHILITE);
}
if (isset($_GET['activate']) && $_GET['activate'] == 'true') {
add_action('init', 'search_hilite_install');
}
add_action('admin_head','search_hilite_version');
add_action('admin_menu','search_hilite_adminmenu',1);
// Highlight text and comments:
add_filter('the_content', 'hilite');
add_filter('the_excerpt', 'hilite');
add_filter('comment_text', 'hilite');
add_action('wp_head', 'hilite_head');
add_filter('the_title', 'hilite');
?>
