Allow rules to be added to the top of the rule stack.

git-svn-id: http://svn.automattic.com/wordpress/trunk@5769 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/rewrite.php

@@ -4,7 +4,7 @@
 *******************************************************************************/
 
 //Add a straight rewrite rule
-function add_rewrite_rule($regex, $redirect) {
+function add_rewrite_rule($regex, $redirect, $after = 'bottom') {
 	global $wp_rewrite;
 	$wp_rewrite->add_rule($regex, $redirect);
 }
@@ -171,8 +171,9 @@ class WP_Rewrite {
 	var $index = 'index.php';
 	var $matches = '';
 	var $rules;
-	var $extra_rules; //those not generated by the class, see add_rewrite_rule()
-	var $non_wp_rules; //rules that don't redirect to WP's index.php
+	var $extra_rules = array(); //those not generated by the class, see add_rewrite_rule()
+	var $extra_rules_top = array(); //those not generated by the class, see add_rewrite_rule()
+	var $non_wp_rules = array(); //rules that don't redirect to WP's index.php
 	var $endpoints;
 	var $use_verbose_rules = false;
 	var $rewritecode =
@@ -775,7 +776,7 @@ class WP_Rewrite {
 		$page_rewrite = apply_filters('page_rewrite_rules', $page_rewrite);
 
 		// Put them together.
-		$this->rules = array_merge($robots_rewrite, $default_feeds, $page_rewrite, $root_rewrite, $comments_rewrite, $search_rewrite, $category_rewrite, $tag_rewrite, $author_rewrite, $date_rewrite, $post_rewrite, $this->extra_rules);
+		$this->rules = array_merge($this->extra_rules_top, $robots_rewrite, $default_feeds, $page_rewrite, $root_rewrite, $comments_rewrite, $search_rewrite, $category_rewrite, $tag_rewrite, $author_rewrite, $date_rewrite, $post_rewrite, $this->extra_rules);
 
 		do_action_ref_array('generate_rewrite_rules', array(&$this));
 		$this->rules = apply_filters('rewrite_rules_array', $this->rules);
@@ -862,14 +863,18 @@ class WP_Rewrite {
 	}
 
 	//Add a straight rewrite rule
-	function add_rule($regex, $redirect) {
+	function add_rule($regex, $redirect, $after = 'bottom') {
 		//get everything up to the first ?
 		$index = (strpos($redirect, '?') == false ? strlen($redirect) : strpos($redirect, '?'));
 		$front = substr($redirect, 0, $index);
 		if ($front != $this->index) { //it doesn't redirect to WP's index.php
 			$this->add_external_rule($regex, $redirect);
 		} else {
-			$this->extra_rules[$regex] = $redirect;
+			if ( 'bottom' == $after)
+				$this->extra_rules = array_merge($this->extra_rules, array($regex => $redirect));
+			else
+				$this->extra_rules_top = array_merge($this->extra_rules_top, array($regex => $redirect));
+			//$this->extra_rules[$regex] = $redirect;
 		}
 	}