Changeset 747

Timestamp:

01/09/2004 11:16:10 AM (21 years ago)

Author:

saxmatt

Message:

Google hilite.

File:

• trunk/wp-includes/functions.php (modified) (1 diff)

trunk/wp-includes/functions.php

@@ -1662 +1662 @@
 }
 
+/* Highlighting code c/o Ryan Boren */
+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;
+    }
+
+    return $query_array;
+}
+
+function is_referer_search_engine($engine = 'google') {
+    $referer = urldecode($_SERVER[HTTP_REFERER]);
+
+    if ( ! $engine ) {
+        return 0;
+    }
+
+    switch ($engine) {
+    case 'google':
+        if (preg_match('|^http://(www)?\.?google\.*|i',$referer)) {
+            return 1;
+        }
+        break;
+    }
+
+    return 0;
+}
+
+function hilite($text) {
+    $search_engines = array('google');
+
+    foreach ($search_engines as $engine) {
+        if ( is_referer_search_engine($engine) ) {
+            $query_terms = get_search_query_terms($engine);
+            foreach ($query_terms as $term) {
+                if (!preg_match('/<.+>/',$text)) {
+                    $text = preg_replace('/(\b'.$term.'\b)/i','<span class="hilite">$1</span>',$text);
+                } else {
+                    $text = preg_replace('/(?<=>)([^<]+)?(\b'.$term.'\b)/i','$1<span class="hilite">$2</span>',$text);
+                }
+            }
+        break;
+        }
+    }
+
+    return $text;
+}
+
+
 // Check for hacks file if the option is enabled
 if (get_settings('hack_file')) {