rewrite.php | searchcode

/wp-includes/rewrite.php

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<?php

/**

 * WordPress Rewrite API

 *

 * @package WordPress

 * @subpackage Rewrite

 */



/**

 * Add a straight rewrite rule.

 *

 * @see WP_Rewrite::add_rule() for long description.

 * @since 2.1.0

 *

 * @param string $regex Regular Expression to match request against.

 * @param string $redirect Page to redirect to.

 * @param string $after Optional, default is 'bottom'. Where to add rule, can also be 'top'.

 */

function add_rewrite_rule($regex, $redirect, $after = 'bottom') {

	global $wp_rewrite;

	$wp_rewrite->add_rule($regex, $redirect, $after);

}



/**

 * Add a new tag (like %postname%).

 *

 * Warning: you must call this on init or earlier, otherwise the query var

 * addition stuff won't work.

 *

 * @since 2.1.0

 *

 * @param string $tagname

 * @param string $regex

 */

function add_rewrite_tag($tagname, $regex) {

	//validation

	if ( strlen($tagname) < 3 || $tagname[0] != '%' || $tagname[strlen($tagname)-1] != '%' )

		return;



	$qv = trim($tagname, '%');



	global $wp_rewrite, $wp;

	$wp->add_query_var($qv);

	$wp_rewrite->add_rewrite_tag($tagname, $regex, $qv . '=');

}



/**

 * Add permalink structure.

 *

 * @see WP_Rewrite::add_permastruct()

 * @since 3.0.0

 *

 * @param string $name Name for permalink structure.

 * @param string $struct Permalink structure.

 * @param bool $with_front Prepend front base to permalink structure.

 */

function add_permastruct( $name, $struct, $with_front = true, $ep_mask = EP_NONE ) {

	global $wp_rewrite;

	return $wp_rewrite->add_permastruct( $name, $struct, $with_front, $ep_mask );

}



/**

 * Add a new feed type like /atom1/.

 *

 * @since 2.1.0

 *

 * @param string $feedname

 * @param callback $function Callback to run on feed display.

 * @return string Feed action name.

 */

function add_feed($feedname, $function) {

	global $wp_rewrite;

	if ( ! in_array($feedname, $wp_rewrite->feeds) ) //override the file if it is

		$wp_rewrite->feeds[] = $feedname;

	$hook = 'do_feed_' . $feedname;

	// Remove default function hook

	remove_action($hook, $hook, 10, 1);

	add_action($hook, $function, 10, 1);

	return $hook;

}



/**

 * Remove rewrite rules and then recreate rewrite rules.

 *

 * @see WP_Rewrite::flush_rules()

 * @since 3.0.0

 *

 * @param bool $hard Whether to update .htaccess (hard flush) or just update

 * 	rewrite_rules transient (soft flush). Default is true (hard).

 */

function flush_rewrite_rules( $hard = true ) {

	global $wp_rewrite;

	$wp_rewrite->flush_rules( $hard );

}



//pseudo-places

/**

 * Endpoint Mask for default, which is nothing.

 *

 * @since 2.1.0

 */

define('EP_NONE', 0);



/**

 * Endpoint Mask for Permalink.

 *

 * @since 2.1.0

 */

define('EP_PERMALINK', 1);



/**

 * Endpoint Mask for Attachment.

 *

 * @since 2.1.0

 */

define('EP_ATTACHMENT', 2);



/**

 * Endpoint Mask for date.

 *

 * @since 2.1.0

 */

define('EP_DATE', 4);



/**

 * Endpoint Mask for year

 *

 * @since 2.1.0

 */

define('EP_YEAR', 8);



/**

 * Endpoint Mask for month.

 *

 * @since 2.1.0

 */

define('EP_MONTH', 16);



/**

 * Endpoint Mask for day.

 *

 * @since 2.1.0

 */

define('EP_DAY', 32);



/**

 * Endpoint Mask for root.

 *

 * @since 2.1.0

 */

define('EP_ROOT', 64);



/**

 * Endpoint Mask for comments.

 *

 * @since 2.1.0

 */

define('EP_COMMENTS', 128);



/**

 * Endpoint Mask for searches.

 *

 * @since 2.1.0

 */

define('EP_SEARCH', 256);



/**

 * Endpoint Mask for categories.

 *

 * @since 2.1.0

 */

define('EP_CATEGORIES', 512);



/**

 * Endpoint Mask for tags.

 *

 * @since 2.3.0

 */

define('EP_TAGS', 1024);



/**

 * Endpoint Mask for authors.

 *

 * @since 2.1.0

 */

define('EP_AUTHORS', 2048);



/**

 * Endpoint Mask for pages.

 *

 * @since 2.1.0

 */

define('EP_PAGES', 4096);



/**

 * Endpoint Mask for everything.

 *

 * @since 2.1.0

 */

define('EP_ALL', 8191);



/**

 * Add an endpoint, like /trackback/.

 *

 * The endpoints are added to the end of the request. So a request matching

 * "/2008/10/14/my_post/myep/", the endpoint will be "/myep/".

 *

 * Be sure to flush the rewrite rules (wp_rewrite->flush_rules()) when your plugin gets

 * activated (register_activation_hook()) and deactivated (register_deactivation_hook())

 *

 * @since 2.1.0

 * @see WP_Rewrite::add_endpoint() Parameters and more description.

 * @uses $wp_rewrite

 *

 * @param unknown_type $name

 * @param unknown_type $places

 */

function add_rewrite_endpoint($name, $places) {

	global $wp_rewrite;

	$wp_rewrite->add_endpoint($name, $places);

}



/**

 * Filter the URL base for taxonomies.

 *

 * To remove any manually prepended /index.php/.

 *

 * @access private

 * @since 2.6.0

 *

 * @param string $base The taxonomy base that we're going to filter

 * @return string

 */

function _wp_filter_taxonomy_base( $base ) {

	if ( !empty( $base ) ) {

		$base = preg_replace( '|^/index\.php/|', '', $base );

		$base = trim( $base, '/' );

	}

	return $base;

}



/**

 * Examine a url and try to determine the post ID it represents.

 *

 * Checks are supposedly from the hosted site blog.

 *

 * @since 1.0.0

 *

 * @param string $url Permalink to check.

 * @return int Post ID, or 0 on failure.

 */

function url_to_postid($url) {

	global $wp_rewrite;



	$url = apply_filters('url_to_postid', $url);



	// First, check to see if there is a 'p=N' or 'page_id=N' to match against

	if ( preg_match('#[?&](p|page_id|attachment_id)=(\d+)#', $url, $values) )	{

		$id = absint($values[2]);

		if ( $id )

			return $id;

	}



	// Check to see if we are using rewrite rules

	$rewrite = $wp_rewrite->wp_rewrite_rules();



	// Not using rewrite rules, and 'p=N' and 'page_id=N' methods failed, so we're out of options

	if ( empty($rewrite) )

		return 0;



	// Get rid of the #anchor

	$url_split = explode('#', $url);

	$url = $url_split[0];



	// Get rid of URL ?query=string

	$url_split = explode('?', $url);

	$url = $url_split[0];



	// Add 'www.' if it is absent and should be there

	if ( false !== strpos(home_url(), '://www.') && false === strpos($url, '://www.') )

		$url = str_replace('://', '://www.', $url);



	// Strip 'www.' if it is present and shouldn't be

	if ( false === strpos(home_url(), '://www.') )

		$url = str_replace('://www.', '://', $url);



	// Strip 'index.php/' if we're not using path info permalinks

	if ( !$wp_rewrite->using_index_permalinks() )

		$url = str_replace('index.php/', '', $url);



	if ( false !== strpos($url, home_url()) ) {

		// Chop off http://domain.com

		$url = str_replace(home_url(), '', $url);

	} else {

		// Chop off /path/to/blog

		$home_path = parse_url(home_url());

		$home_path = isset( $home_path['path'] ) ? $home_path['path'] : '' ;

		$url = str_replace($home_path, '', $url);

	}



	// Trim leading and lagging slashes

	$url = trim($url, '/');



	$request = $url;



	// Look for matches.

	$request_match = $request;

	foreach ( (array)$rewrite as $match => $query) {

		// If the requesting file is the anchor of the match, prepend it

		// to the path info.

		if ( !empty($url) && ($url != $request) && (strpos($match, $url) === 0) )

			$request_match = $url . '/' . $request;



		if ( preg_match("!^$match!", $request_match, $matches) ) {

			// Got a match.

			// Trim the query of everything up to the '?'.

			$query = preg_replace("!^.+\?!", '', $query);



			// Substitute the substring matches into the query.

			$query = addslashes(WP_MatchesMapRegex::apply($query, $matches));



			// Filter out non-public query vars

			global $wp;

			parse_str($query, $query_vars);

			$query = array();

			foreach ( (array) $query_vars as $key => $value ) {

				if ( in_array($key, $wp->public_query_vars) )

					$query[$key] = $value;

			}



			// Do the query

			$query = new WP_Query($query);

			if ( !empty($query->posts) && $query->is_singular )

				return $query->post->ID;

			else

				return 0;

		}

	}

	return 0;

}



/**

 * WordPress Rewrite Component.

 *

 * The WordPress Rewrite class writes the rewrite module rules to the .htaccess

 * file. It also handles parsing the request to get the correct setup for the

 * WordPress Query class.

 *

 * The Rewrite along with WP class function as a front controller for WordPress.

 * You can add rules to trigger your page view and processing using this

 * component. The full functionality of a front controller does not exist,

 * meaning you can't define how the template files load based on the rewrite

 * rules.

 *

 * @since 1.5.0

 */

class WP_Rewrite {

	/**

	 * Default permalink structure for WordPress.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $permalink_structure;



	/**

	 * Whether to add trailing slashes.

	 *

	 * @since 2.2.0

	 * @access private

	 * @var bool

	 */

	var $use_trailing_slashes;



	/**

	 * Permalink author request base ( example.com/author/authorname ).

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $author_base = 'author';



	/**

	 * Permalink request structure for author pages.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $author_structure;



	/**

	 * Permalink request structure for dates.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $date_structure;



	/**

	 * Permalink request structure for pages.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $page_structure;



	/**

	 * Search permalink base ( example.com/search/query ).

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $search_base = 'search';



	/**

	 * Permalink request structure for searches.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $search_structure;



	/**

	 * Comments permalink base.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $comments_base = 'comments';



	/**

	 * Pagination permalink base.

	 *

	 * @since 3.1.0

	 * @access private

	 * @var string

	 */

	var $pagination_base = 'page';



	/**

	 * Feed permalink base.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $feed_base = 'feed';



	/**

	 * Comments feed request structure permalink.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $comments_feed_structure;



	/**

	 * Feed request structure permalink.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $feed_structure;



	/**

	 * Front URL path.

	 *

	 * The difference between the root property is that WordPress might be

	 * located at example/WordPress/index.php, if permalinks are turned off. The

	 * WordPress/index.php will be the front portion. If permalinks are turned

	 * on, this will most likely be empty or not set.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $front;



	/**

	 * Root URL path to WordPress (without domain).

	 *

	 * The difference between front property is that WordPress might be located

	 * at example.com/WordPress/. The root is the 'WordPress/' portion.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $root = '';



	/**

	 * Permalink to the home page.

	 *

	 * @since 1.5.0

	 * @access public

	 * @var string

	 */

	var $index = 'index.php';



	/**

	 * Request match string.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var string

	 */

	var $matches = '';



	/**

	 * Rewrite rules to match against the request to find the redirect or query.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var array

	 */

	var $rules;



	/**

	 * Additional rules added external to the rewrite class.

	 *

	 * Those not generated by the class, see add_rewrite_rule().

	 *

	 * @since 2.1.0

	 * @access private

	 * @var array

	 */

	var $extra_rules = array(); //



	/**

	 * Additional rules that belong at the beginning to match first.

	 *

	 * Those not generated by the class, see add_rewrite_rule().

	 *

	 * @since 2.3.0

	 * @access private

	 * @var array

	 */

	var $extra_rules_top = array(); //



	/**

	 * Rules that don't redirect to WP's index.php.

	 *

	 * These rules are written to the mod_rewrite portion of the .htaccess.

	 *

	 * @since 2.1.0

	 * @access private

	 * @var array

	 */

	var $non_wp_rules = array(); //



	/**

	 * Extra permalink structures.

	 *

	 * @since 2.1.0

	 * @access private

	 * @var array

	 */

	var $extra_permastructs = array();



	/**

	 * Endpoints permalinks

	 *

	 * @since 2.1.0

	 * @access private

	 * @var array

	 */

	var $endpoints;



	/**

	 * Whether to write every mod_rewrite rule for WordPress.

	 *

	 * This is off by default, turning it on might print a lot of rewrite rules

	 * to the .htaccess file.

	 *

	 * @since 2.0.0

	 * @access public

	 * @var bool

	 */

	var $use_verbose_rules = false;



	/**

	 * Whether to write every mod_rewrite rule for WordPress pages.

	 *

	 * @since 2.5.0

	 * @access public

	 * @var bool

	 */

	var $use_verbose_page_rules = true;



	/**

	 * Permalink structure search for preg_replace.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var array

	 */

	var $rewritecode =

		array(

					'%year%',

					'%monthnum%',

					'%day%',

					'%hour%',

					'%minute%',

					'%second%',

					'%postname%',

					'%post_id%',

					'%author%',

					'%pagename%',

					'%search%'

					);



	/**

	 * Preg_replace values for the search, see {@link WP_Rewrite::$rewritecode}.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var array

	 */

	var $rewritereplace =

		array(

					'([0-9]{4})',

					'([0-9]{1,2})',

					'([0-9]{1,2})',

					'([0-9]{1,2})',

					'([0-9]{1,2})',

					'([0-9]{1,2})',

					'([^/]+)',

					'([0-9]+)',

					'([^/]+)',

					'([^/]+?)',

					'(.+)'

					);



	/**

	 * Search for the query to look for replacing.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var array

	 */

	var $queryreplace =

		array (

					'year=',

					'monthnum=',

					'day=',

					'hour=',

					'minute=',

					'second=',

					'name=',

					'p=',

					'author_name=',

					'pagename=',

					's='

					);



	/**

	 * Supported default feeds.

	 *

	 * @since 1.5.0

	 * @access private

	 * @var array

	 */

	var $feeds = array ( 'feed', 'rdf', 'rss', 'rss2', 'atom' );



	/**

	 * Whether permalinks are being used.

	 *

	 * This can be either rewrite module or permalink in the HTTP query string.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return bool True, if permalinks are enabled.

	 */

	function using_permalinks() {

		return ! empty($this->permalink_structure);

	}



	/**

	 * Whether permalinks are being used and rewrite module is not enabled.

	 *

	 * Means that permalink links are enabled and index.php is in the URL.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return bool

	 */

	function using_index_permalinks() {

		if ( empty($this->permalink_structure) )

			return false;



		// If the index is not in the permalink, we're using mod_rewrite.

		if ( preg_match('#^/*' . $this->index . '#', $this->permalink_structure) )

			return true;



		return false;

	}



	/**

	 * Whether permalinks are being used and rewrite module is enabled.

	 *

	 * Using permalinks and index.php is not in the URL.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return bool

	 */

	function using_mod_rewrite_permalinks() {

		if ( $this->using_permalinks() && ! $this->using_index_permalinks() )

			return true;

		else

			return false;

	}



	/**

	 * Index for matches for usage in preg_*() functions.

	 *

	 * The format of the string is, with empty matches property value, '$NUM'.

	 * The 'NUM' will be replaced with the value in the $number parameter. With

	 * the matches property not empty, the value of the returned string will

	 * contain that value of the matches property. The format then will be

	 * '$MATCHES[NUM]', with MATCHES as the value in the property and NUM the

	 * value of the $number parameter.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @param int $number Index number.

	 * @return string

	 */

	function preg_index($number) {

		$match_prefix = '$';

		$match_suffix = '';



		if ( ! empty($this->matches) ) {

			$match_prefix = '$' . $this->matches . '[';

			$match_suffix = ']';

		}



		return "$match_prefix$number$match_suffix";

	}



	/**

	 * Retrieve all page and attachments for pages URIs.

	 *

	 * The attachments are for those that have pages as parents and will be

	 * retrieved.

	 *

	 * @since 2.5.0

	 * @access public

	 *

	 * @return array Array of page URIs as first element and attachment URIs as second element.

	 */

	function page_uri_index() {

		global $wpdb;



		//get pages in order of hierarchy, i.e. children after parents

		$posts = get_page_hierarchy( $wpdb->get_results("SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE post_type = 'page' AND post_status != 'auto-draft'") );



		// If we have no pages get out quick

		if ( !$posts )

			return array( array(), array() );



		//now reverse it, because we need parents after children for rewrite rules to work properly

		$posts = array_reverse($posts, true);



		$page_uris = array();

		$page_attachment_uris = array();



		foreach ( $posts as $id => $post ) {

			// URL => page name

			$uri = get_page_uri($id);

			$attachments = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE post_type = 'attachment' AND post_parent = %d", $id ));

			if ( !empty($attachments) ) {

				foreach ( $attachments as $attachment ) {

					$attach_uri = get_page_uri($attachment->ID);

					$page_attachment_uris[$attach_uri] = $attachment->ID;

				}

			}



			$page_uris[$uri] = $id;

		}



		return array( $page_uris, $page_attachment_uris );

	}



	/**

	 * Retrieve all of the rewrite rules for pages.

	 *

	 * If the 'use_verbose_page_rules' property is false, then there will only

	 * be a single rewrite rule for pages for those matching '%pagename%'. With

	 * the property set to true, the attachments and the pages will be added for

	 * each individual attachment URI and page URI, respectively.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return array

	 */

	function page_rewrite_rules() {

		$rewrite_rules = array();

		$page_structure = $this->get_page_permastruct();



		if ( ! $this->use_verbose_page_rules ) {

			$this->add_rewrite_tag('%pagename%', "(.+?)", 'pagename=');

			$rewrite_rules = array_merge($rewrite_rules, $this->generate_rewrite_rules($page_structure, EP_PAGES));

			return $rewrite_rules;

		}



		$page_uris = $this->page_uri_index();

		$uris = $page_uris[0];

		$attachment_uris = $page_uris[1];



		if ( is_array( $attachment_uris ) ) {

			foreach ( $attachment_uris as $uri => $pagename ) {

				$this->add_rewrite_tag('%pagename%', "($uri)", 'attachment=');

				$rewrite_rules = array_merge($rewrite_rules, $this->generate_rewrite_rules($page_structure, EP_PAGES));

			}

		}

		if ( is_array( $uris ) ) {

			foreach ( $uris as $uri => $pagename ) {

				$this->add_rewrite_tag('%pagename%', "($uri)", 'pagename=');

				$rewrite_rules = array_merge($rewrite_rules, $this->generate_rewrite_rules($page_structure, EP_PAGES));

			}

		}



		return $rewrite_rules;

	}



	/**

	 * Retrieve date permalink structure, with year, month, and day.

	 *

	 * The permalink structure for the date, if not set already depends on the

	 * permalink structure. It can be one of three formats. The first is year,

	 * month, day; the second is day, month, year; and the last format is month,

	 * day, year. These are matched against the permalink structure for which

	 * one is used. If none matches, then the default will be used, which is

	 * year, month, day.

	 *

	 * Prevents post ID and date permalinks from overlapping. In the case of

	 * post_id, the date permalink will be prepended with front permalink with

	 * 'date/' before the actual permalink to form the complete date permalink

	 * structure.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return bool|string False on no permalink structure. Date permalink structure.

	 */

	function get_date_permastruct() {

		if ( isset($this->date_structure) )

			return $this->date_structure;



		if ( empty($this->permalink_structure) ) {

			$this->date_structure = '';

			return false;

		}



		// The date permalink must have year, month, and day separated by slashes.

		$endians = array('%year%/%monthnum%/%day%', '%day%/%monthnum%/%year%', '%monthnum%/%day%/%year%');



		$this->date_structure = '';

		$date_endian = '';



		foreach ( $endians as $endian ) {

			if ( false !== strpos($this->permalink_structure, $endian) ) {

				$date_endian= $endian;

				break;

			}

		}



		if ( empty($date_endian) )

			$date_endian = '%year%/%monthnum%/%day%';



		// Do not allow the date tags and %post_id% to overlap in the permalink

		// structure. If they do, move the date tags to $front/date/.

		$front = $this->front;

		preg_match_all('/%.+?%/', $this->permalink_structure, $tokens);

		$tok_index = 1;

		foreach ( (array) $tokens[0] as $token) {

			if ( '%post_id%' == $token && ($tok_index <= 3) ) {

				$front = $front . 'date/';

				break;

			}

			$tok_index++;

		}



		$this->date_structure = $front . $date_endian;



		return $this->date_structure;

	}



	/**

	 * Retrieve the year permalink structure without month and day.

	 *

	 * Gets the date permalink structure and strips out the month and day

	 * permalink structures.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return bool|string False on failure. Year structure on success.

	 */

	function get_year_permastruct() {

		$structure = $this->get_date_permastruct($this->permalink_structure);



		if ( empty($structure) )

			return false;



		$structure = str_replace('%monthnum%', '', $structure);

		$structure = str_replace('%day%', '', $structure);



		$structure = preg_replace('#/+#', '/', $structure);



		return $structure;

	}



	/**

	 * Retrieve the month permalink structure without day and with year.

	 *

	 * Gets the date permalink structure and strips out the day permalink

	 * structures. Keeps the year permalink structure.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return bool|string False on failure. Year/Month structure on success.

	 */

	function get_month_permastruct() {

		$structure = $this->get_date_permastruct($this->permalink_structure);



		if ( empty($structure) )

			return false;



		$structure = str_replace('%day%', '', $structure);



		$structure = preg_replace('#/+#', '/', $structure);



		return $structure;

	}



	/**

	 * Retrieve the day permalink structure with month and year.

	 *

	 * Keeps date permalink structure with all year, month, and day.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return bool|string False on failure. Year/Month/Day structure on success.

	 */

	function get_day_permastruct() {

		return $this->get_date_permastruct($this->permalink_structure);

	}



	/**

	 * Retrieve the permalink structure for categories.

	 *

	 * If the category_base property has no value, then the category structure

	 * will have the front property value, followed by 'category', and finally

	 * '%category%'. If it does, then the root property will be used, along with

	 * the category_base property value.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return bool|string False on failure. Category permalink structure.

	 */

	function get_category_permastruct() {

		return $this->get_extra_permastruct('category');

	}



	/**

	 * Retrieve the permalink structure for tags.

	 *

	 * If the tag_base property has no value, then the tag structure will have

	 * the front property value, followed by 'tag', and finally '%tag%'. If it

	 * does, then the root property will be used, along with the tag_base

	 * property value.

	 *

	 * @since 2.3.0

	 * @access public

	 *

	 * @return bool|string False on failure. Tag permalink structure.

	 */

	function get_tag_permastruct() {

		return $this->get_extra_permastruct('post_tag');

	}



	/**

	 * Retrieve extra permalink structure by name.

	 *

	 * @since 2.5.0

	 * @access public

	 *

	 * @param string $name Permalink structure name.

	 * @return string|bool False if not found. Permalink structure string.

	 */

	function get_extra_permastruct($name) {

		if ( empty($this->permalink_structure) )

			return false;



		if ( isset($this->extra_permastructs[$name]) )

			return $this->extra_permastructs[$name][0];



		return false;

	}



	/**

	 * Retrieve the author permalink structure.

	 *

	 * The permalink structure is front property, author base, and finally

	 * '/%author%'. Will set the author_structure property and then return it

	 * without attempting to set the value again.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return string|bool False if not found. Permalink structure string.

	 */

	function get_author_permastruct() {

		if ( isset($this->author_structure) )

			return $this->author_structure;



		if ( empty($this->permalink_structure) ) {

			$this->author_structure = '';

			return false;

		}



		$this->author_structure = $this->front . $this->author_base . '/%author%';



		return $this->author_structure;

	}



	/**

	 * Retrieve the search permalink structure.

	 *

	 * The permalink structure is root property, search base, and finally

	 * '/%search%'. Will set the search_structure property and then return it

	 * without attempting to set the value again.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return string|bool False if not found. Permalink structure string.

	 */

	function get_search_permastruct() {

		if ( isset($this->search_structure) )

			return $this->search_structure;



		if ( empty($this->permalink_structure) ) {

			$this->search_structure = '';

			return false;

		}



		$this->search_structure = $this->root . $this->search_base . '/%search%';



		return $this->search_structure;

	}



	/**

	 * Retrieve the page permalink structure.

	 *

	 * The permalink structure is root property, and '%pagename%'. Will set the

	 * page_structure property and then return it without attempting to set the

	 * value again.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return string|bool False if not found. Permalink structure string.

	 */

	function get_page_permastruct() {

		if ( isset($this->page_structure) )

			return $this->page_structure;



		if (empty($this->permalink_structure)) {

			$this->page_structure = '';

			return false;

		}



		$this->page_structure = $this->root . '%pagename%';



		return $this->page_structure;

	}



	/**

	 * Retrieve the feed permalink structure.

	 *

	 * The permalink structure is root property, feed base, and finally

	 * '/%feed%'. Will set the feed_structure property and then return it

	 * without attempting to set the value again.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return string|bool False if not found. Permalink structure string.

	 */

	function get_feed_permastruct() {

		if ( isset($this->feed_structure) )

			return $this->feed_structure;



		if ( empty($this->permalink_structure) ) {

			$this->feed_structure = '';

			return false;

		}



		$this->feed_structure = $this->root . $this->feed_base . '/%feed%';



		return $this->feed_structure;

	}



	/**

	 * Retrieve the comment feed permalink structure.

	 *

	 * The permalink structure is root property, comment base property, feed

	 * base and finally '/%feed%'. Will set the comment_feed_structure property

	 * and then return it without attempting to set the value again.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return string|bool False if not found. Permalink structure string.

	 */

	function get_comment_feed_permastruct() {

		if ( isset($this->comment_feed_structure) )

			return $this->comment_feed_structure;



		if (empty($this->permalink_structure)) {

			$this->comment_feed_structure = '';

			return false;

		}



		$this->comment_feed_structure = $this->root . $this->comments_base . '/' . $this->feed_base . '/%feed%';



		return $this->comment_feed_structure;

	}



	/**

	 * Append or update tag, pattern, and query for replacement.

	 *

	 * If the tag already exists, replace the existing pattern and query for

	 * that tag, otherwise add the new tag, pattern, and query to the end of the

	 * arrays.

	 *

	 * @internal What is the purpose of this function again? Need to finish long

	 *           description.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @param string $tag Append tag to rewritecode property array.

	 * @param string $pattern Append pattern to rewritereplace property array.

	 * @param string $query Append query to queryreplace property array.

	 */

	function add_rewrite_tag($tag, $pattern, $query) {

		$position = array_search($tag, $this->rewritecode);

		if ( false !== $position && null !== $position ) {

			$this->rewritereplace[$position] = $pattern;

			$this->queryreplace[$position] = $query;

		} else {

			$this->rewritecode[] = $tag;

			$this->rewritereplace[] = $pattern;

			$this->queryreplace[] = $query;

		}

	}



	/**

	 * Generate the rules from permalink structure.

	 *

	 * The main WP_Rewrite function for building the rewrite rule list. The

	 * contents of the function is a mix of black magic and regular expressions,

	 * so best just ignore the contents and move to the parameters.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @param string $permalink_structure The permalink structure.

	 * @param int $ep_mask Optional, default is EP_NONE. Endpoint constant, see EP_* constants.

	 * @param bool $paged Optional, default is true. Whether permalink request is paged.

	 * @param bool $feed Optional, default is true. Whether for feed.

	 * @param bool $forcomments Optional, default is false. Whether for comments.

	 * @param bool $walk_dirs Optional, default is true. Whether to create list of directories to walk over.

	 * @param bool $endpoints Optional, default is true. Whether endpoints are enabled.

	 * @return array Rewrite rule list.

	 */

	function generate_rewrite_rules($permalink_structure, $ep_mask = EP_NONE, $paged = true, $feed = true, $forcomments = false, $walk_dirs = true, $endpoints = true) {

		//build a regex to match the feed section of URLs, something like (feed|atom|rss|rss2)/?

		$feedregex2 = '';

		foreach ( (array) $this->feeds as $feed_name)

			$feedregex2 .= $feed_name . '|';

		$feedregex2 = '(' . trim($feedregex2, '|') .  ')/?$';



		//$feedregex is identical but with /feed/ added on as well, so URLs like <permalink>/feed/atom

		//and <permalink>/atom are both possible

		$feedregex = $this->feed_base  . '/' . $feedregex2;



		//build a regex to match the trackback and page/xx parts of URLs

		$trackbackregex = 'trackback/?$';

		$pageregex = $this->pagination_base . '/?([0-9]{1,})/?$';

		$commentregex = 'comment-page-([0-9]{1,})/?$';



		//build up an array of endpoint regexes to append => queries to append

		if ( $endpoints ) {

			$ep_query_append = array ();

			foreach ( (array) $this->endpoints as $endpoint) {

				//match everything after the endpoint name, but allow for nothing to appear there

				$epmatch = $endpoint[1] . '(/(.*))?/?$';

				//this will be appended on to the rest of the query for each dir

				$epquery = '&' . $endpoint[1] . '=';

				$ep_query_append[$epmatch] = array ( $endpoint[0], $epquery );

			}

		}



		//get everything up to the first rewrite tag

		$front = substr($permalink_structure, 0, strpos($permalink_structure, '%'));

		//build an array of the tags (note that said array ends up being in $tokens[0])

		preg_match_all('/%.+?%/', $permalink_structure, $tokens);



		$num_tokens = count($tokens[0]);



		$index = $this->index; //probably 'index.php'

		$feedindex = $index;

		$trackbackindex = $index;

		//build a list from the rewritecode and queryreplace arrays, that will look something like

		//tagname=$matches[i] where i is the current $i

		for ( $i = 0; $i < $num_tokens; ++$i ) {

			if ( 0 < $i )

				$queries[$i] = $queries[$i - 1] . '&';

			else

				$queries[$i] = '';



			$query_token = str_replace($this->rewritecode, $this->queryreplace, $tokens[0][$i]) . $this->preg_index($i+1);

			$queries[$i] .= $query_token;

		}



		//get the structure, minus any cruft (stuff that isn't tags) at the front

		$structure = $permalink_structure;

		if ( $front != '/' )

			$structure = str_replace($front, '', $structure);



		//create a list of dirs to walk over, making rewrite rules for each level

		//so for example, a $structure of /%year%/%month%/%postname% would create

		//rewrite rules for /%year%/, /%year%/%month%/ and /%year%/%month%/%postname%

		$structure = trim($structure, '/');

		$dirs = $walk_dirs ? explode('/', $structure) : array( $structure );

		$num_dirs = count($dirs);



		//strip slashes from the front of $front

		$front = preg_replace('|^/+|', '', $front);



		//the main workhorse loop

		$post_rewrite = array();

		$struct = $front;

		for ( $j = 0; $j < $num_dirs; ++$j ) {

			//get the struct for this dir, and trim slashes off the front

			$struct .= $dirs[$j] . '/'; //accumulate. see comment near explode('/', $structure) above

			$struct = ltrim($struct, '/');



			//replace tags with regexes

			$match = str_replace($this->rewritecode, $this->rewritereplace, $struct);



			//make a list of tags, and store how many there are in $num_toks

			$num_toks = preg_match_all('/%.+?%/', $struct, $toks);



			//get the 'tagname=$matches[i]'

			$query = ( isset($queries) && is_array($queries) ) ? $queries[$num_toks - 1] : '';



			//set up $ep_mask_specific which is used to match more specific URL types

			switch ( $dirs[$j] ) {

				case '%year%':

					$ep_mask_specific = EP_YEAR;

					break;

				case '%monthnum%':

					$ep_mask_specific = EP_MONTH;

					break;

				case '%day%':

					$ep_mask_specific = EP_DAY;

					break;

				default:

					$ep_mask_specific = EP_NONE;

			}



			//create query for /page/xx

			$pagematch = $match . $pageregex;

			$pagequery = $index . '?' . $query . '&paged=' . $this->preg_index($num_toks + 1);



			//create query for /comment-page-xx

			$commentmatch = $match . $commentregex;

			$commentquery = $index . '?' . $query . '&cpage=' . $this->preg_index($num_toks + 1);



			if ( get_option('page_on_front') ) {

				//create query for Root /comment-page-xx

				$rootcommentmatch = $match . $commentregex;

				$rootcommentquery = $index . '?' . $query . '&page_id=' . get_option('page_on_front') . '&cpage=' . $this->preg_index($num_toks + 1);

			}



			//create query for /feed/(feed|atom|rss|rss2|rdf)

			$feedmatch = $match . $feedregex;

			$feedquery = $feedindex . '?' . $query . '&feed=' . $this->preg_index($num_toks + 1);



			//create query for /(feed|atom|rss|rss2|rdf) (see comment near creation of $feedregex)

			$feedmatch2 = $match . $feedregex2;

			$feedquery2 = $feedindex . '?' . $query . '&feed=' . $this->preg_index($num_toks + 1);



			//if asked to, turn the feed queries into comment feed ones

			if ( $forcomments ) {

				$feedquery .= '&withcomments=1';

				$feedquery2 .= '&withcomments=1';

			}



			//start creating the array of rewrites for this dir

			$rewrite = array();

			if ( $feed ) //...adding on /feed/ regexes => queries

				$rewrite = array($feedmatch => $feedquery, $feedmatch2 => $feedquery2);

			if ( $paged ) //...and /page/xx ones

				$rewrite = array_merge($rewrite, array($pagematch => $pagequery));



			//only on pages with comments add ../comment-page-xx/

			if ( EP_PAGES & $ep_mask || EP_PERMALINK & $ep_mask )

				$rewrite = array_merge($rewrite, array($commentmatch => $commentquery));

			else if ( EP_ROOT & $ep_mask && get_option('page_on_front') )

				$rewrite = array_merge($rewrite, array($rootcommentmatch => $rootcommentquery));



			//do endpoints

			if ( $endpoints ) {

				foreach ( (array) $ep_query_append as $regex => $ep) {

					//add the endpoints on if the mask fits

					if ( $ep[0] & $ep_mask || $ep[0] & $ep_mask_specific )

						$rewrite[$match . $regex] = $index . '?' . $query . $ep[1] . $this->preg_index($num_toks + 2);

				}

			}



			//if we've got some tags in this dir

			if ( $num_toks ) {

				$post = false;

				$page = false;



				//check to see if this dir is permalink-level: i.e. the structure specifies an

				//individual post. Do this by checking it contains at least one of 1) post name,

				//2) post ID, 3) page name, 4) timestamp (year, month, day, hour, second and

				//minute all present). Set these flags now as we need them for the endpoints.

				if ( strpos($struct, '%postname%') !== false

						|| strpos($struct, '%post_id%') !== false

						|| strpos($struct, '%pagename%') !== false

						|| (strpos($struct, '%year%') !== false && strpos($struct, '%monthnum%') !== false && strpos($struct, '%day%') !== false && strpos($struct, '%hour%') !== false && strpos($struct, '%minute%') !== false && strpos($struct, '%second%') !== false)

						) {

					$post = true;

					if ( strpos($struct, '%pagename%') !== false )

						$page = true;

				}



				if ( ! $post ) {

					// For custom post types, we need to add on endpoints as well.

					foreach ( get_post_types( array('_builtin' => false ) ) as $ptype ) {

						if ( strpos($struct, "%$ptype%") !== false ) {

							$post = true;

							$page = is_post_type_hierarchical( $ptype ); // This is for page style attachment url's

							break;

						}

					}

				}



				//if we're creating rules for a permalink, do all the endpoints like attachments etc

				if ( $post ) {

					//create query and regex for trackback

					$trackbackmatch = $match . $trackbackregex;

					$trackbackquery = $trackbackindex . '?' . $query . '&tb=1';

					//trim slashes from the end of the regex for this dir

					$match = rtrim($match, '/');

					//get rid of brackets

					$submatchbase = str_replace( array('(', ')'), '', $match);



					//add a rule for at attachments, which take the form of <permalink>/some-text

					$sub1 = $submatchbase . '/([^/]+)/';

					$sub1tb = $sub1 . $trackbackregex; //add trackback regex <permalink>/trackback/...

					$sub1feed = $sub1 . $feedregex; //and <permalink>/feed/(atom|...)

					$sub1feed2 = $sub1 . $feedregex2; //and <permalink>/(feed|atom...)

					$sub1comment = $sub1 . $commentregex; //and <permalink>/comment-page-xx

					//add an ? as we don't have to match that last slash, and finally a $ so we

					//match to the end of the URL



					//add another rule to match attachments in the explicit form:

					//<permalink>/attachment/some-text

					$sub2 = $submatchbase . '/attachment/([^/]+)/';

					$sub2tb = $sub2 . $trackbackregex; //and add trackbacks <permalink>/attachment/trackback

					$sub2feed = $sub2 . $feedregex;    //feeds, <permalink>/attachment/feed/(atom|...)

					$sub2feed2 = $sub2 . $feedregex2;  //and feeds again on to this <permalink>/attachment/(feed|atom...)

					$sub2comment = $sub2 . $commentregex; //and <permalink>/comment-page-xx



					//create queries for these extra tag-ons we've just dealt with

					$subquery = $index . '?attachment=' . $this->preg_index(1);

					$subtbquery = $subquery . '&tb=1';

					$subfeedquery = $subquery . '&feed=' . $this->preg_index(2);

					$subcommentquery = $subquery . '&cpage=' . $this->preg_index(2);



					//do endpoints for attachments

					if ( !empty($endpoints) ) {

						foreach ( (array) $ep_query_append as $regex => $ep ) {

							if ( $ep[0] & EP_ATTACHMENT ) {

								$rewrite[$sub1 . $regex] = $subquery . $ep[1] . $this->preg_index(2);

								$rewrite[$sub2 . $regex] = $subquery . $ep[1] . $this->preg_index(2);

							}

						}

					}



					//now we've finished with endpoints, finish off the $sub1 and $sub2 matches

					$sub1 .= '?$';

					$sub2 .= '?$';



					//allow URLs like <permalink>/2 for <permalink>/page/2

					$match = $match . '(/[0-9]+)?/?$';

					$query = $index . '?' . $query . '&page=' . $this->preg_index($num_toks + 1);

				} else { //not matching a permalink so this is a lot simpler

					//close the match and finalise the query

					$match .= '?$';

					$query = $index . '?' . $query;

				}



				//create the final array for this dir by joining the $rewrite array (which currently

				//only contains rules/queries for trackback, pages etc) to the main regex/query for

				//this dir

				$rewrite = array_merge($rewrite, array($match => $query));



				//if we're matching a permalink, add those extras (attachments etc) on

				if ( $post ) {

					//add trackback

					$rewrite = array_merge(array($trackbackmatch => $trackbackquery), $rewrite);



					//add regexes/queries for attachments, attachment trackbacks and so on

					if ( ! $page ) //require <permalink>/attachment/stuff form for pages because of confusion with subpages

						$rewrite = array_merge($rewrite, array($sub1 => $subquery, $sub1tb => $subtbquery, $sub1feed => $subfeedquery, $sub1feed2 => $subfeedquery, $sub1comment => $subcommentquery));

					$rewrite = array_merge(array($sub2 => $subquery, $sub2tb => $subtbquery, $sub2feed => $subfeedquery, $sub2feed2 => $subfeedquery, $sub2comment => $subcommentquery), $rewrite);

				}

			} //if($num_toks)

			//add the rules for this dir to the accumulating $post_rewrite

			$post_rewrite = array_merge($rewrite, $post_rewrite);

		} //foreach ($dir)

		return $post_rewrite; //the finished rules. phew!

	}



	/**

	 * Generate Rewrite rules with permalink structure and walking directory only.

	 *

	 * Shorten version of {@link WP_Rewrite::generate_rewrite_rules()} that

	 * allows for shorter list of parameters. See the method for longer

	 * description of what generating rewrite rules does.

	 *

	 * @uses WP_Rewrite::generate_rewrite_rules() See for long description and rest of parameters.

	 * @since 1.5.0

	 * @access public

	 *

	 * @param string $permalink_structure The permalink structure to generate rules.

	 * @param bool $walk_dirs Optional, default is false. Whether to create list of directories to walk over.

	 * @return array

	 */

	function generate_rewrite_rule($permalink_structure, $walk_dirs = false) {

		return $this->generate_rewrite_rules($permalink_structure, EP_NONE, false, false, false, $walk_dirs);

	}



	/**

	 * Construct rewrite matches and queries from permalink structure.

	 *

	 * Runs the action 'generate_rewrite_rules' with the parameter that is an

	 * reference to the current WP_Rewrite instance to further manipulate the

	 * permalink structures and rewrite rules. Runs the 'rewrite_rules_array'

	 * filter on the full rewrite rule array.

	 *

	 * There are two ways to manipulate the rewrite rules, one by hooking into

	 * the 'generate_rewrite_rules' action and gaining full control of the

	 * object or just manipulating the rewrite rule array before it is passed

	 * from the function.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return array An associate array of matches and queries.

	 */

	function rewrite_rules() {

		$rewrite = array();



		if ( empty($this->permalink_structure) )

			return $rewrite;



		// robots.txt -only if installed at the root

		$home_path = parse_url( home_url() );

		$robots_rewrite = ( empty( $home_path['path'] ) || '/' == $home_path['path'] ) ? array( 'robots\.txt$' => $this->index . '?robots=1' ) : array();



		// Default Feed rules - These are require to allow for the direct access files to work with permalink structure starting with %category%

		$default_feeds = array(	'.*wp-atom.php$'	=>	$this->index . '?feed=atom',

								'.*wp-rdf.php$'		=>	$this->index . '?feed=rdf',

								'.*wp-rss.php$'		=>	$this->index . '?feed=rss',

								'.*wp-rss2.php$'	=>	$this->index . '?feed=rss2',

								'.*wp-feed.php$'	=>	$this->index . '?feed=feed',

								'.*wp-commentsrss2.php$'	=>	$this->index . '?feed=rss2&withcomments=1');



		// Registration rules

		$registration_pages = array();

		if ( is_multisite() && is_main_site() ) {

			$registration_pages['.*wp-signup.php$'] = $this->index . '?signup=true';

			$registration_pages['.*wp-activate.php$'] = $this->index . '?activate=true';

		}



		// Post

		$post_rewrite = $this->generate_rewrite_rules($this->permalink_structure, EP_PERMALINK);

		$post_rewrite = apply_filters('post_rewrite_rules', $post_rewrite);



		// Date

		$date_rewrite = $this->generate_rewrite_rules($this->get_date_permastruct(), EP_DATE);

		$date_rewrite = apply_filters('date_rewrite_rules', $date_rewrite);



		// Root

		$root_rewrite = $this->generate_rewrite_rules($this->root . '/', EP_ROOT);

		$root_rewrite = apply_filters('root_rewrite_rules', $root_rewrite);



		// Comments

		$comments_rewrite = $this->generate_rewrite_rules($this->root . $this->comments_base, EP_COMMENTS, true, true, true, false);

		$comments_rewrite = apply_filters('comments_rewrite_rules', $comments_rewrite);



		// Search

		$search_structure = $this->get_search_permastruct();

		$search_rewrite = $this->generate_rewrite_rules($search_structure, EP_SEARCH);

		$search_rewrite = apply_filters('search_rewrite_rules', $search_rewrite);



		// Authors

		$author_rewrite = $this->generate_rewrite_rules($this->get_author_permastruct(), EP_AUTHORS);

		$author_rewrite = apply_filters('author_rewrite_rules', $author_rewrite);



		// Pages

		$page_rewrite = $this->page_rewrite_rules();

		$page_rewrite = apply_filters('page_rewrite_rules', $page_rewrite);



		// Extra permastructs

		foreach ( $this->extra_permastructs as $permastructname => $permastruct ) {

			if ( is_array($permastruct) )

				$rules = $this->generate_rewrite_rules($permastruct[0], $permastruct[1]);

			else

				$rules = $this->generate_rewrite_rules($permastruct, EP_NONE);



			$rules = apply_filters($permastructname . '_rewrite_rules', $rules);

			if ( 'post_tag' == $permastructname )

				$rules = apply_filters('tag_rewrite_rules', $rules);



			$this->extra_rules_top = array_merge($this->extra_rules_top, $rules);

		}



		// Put them together.

		if ( $this->use_verbose_page_rules )

			$this->rules = array_merge($this->extra_rules_top, $robots_rewrite, $default_feeds, $registration_pages, $page_rewrite, $root_rewrite, $comments_rewrite, $search_rewrite,  $author_rewrite, $date_rewrite, $post_rewrite, $this->extra_rules);

		else

			$this->rules = array_merge($this->extra_rules_top, $robots_rewrite, $default_feeds, $registration_pages, $root_rewrite, $comments_rewrite, $search_rewrite,  $author_rewrite, $date_rewrite, $post_rewrite, $page_rewrite, $this->extra_rules);



		do_action_ref_array('generate_rewrite_rules', array(&$this));

		$this->rules = apply_filters('rewrite_rules_array', $this->rules);



		return $this->rules;

	}



	/**

	 * Retrieve the rewrite rules.

	 *

	 * The difference between this method and {@link

	 * WP_Rewrite::rewrite_rules()} is that this method stores the rewrite rules

	 * in the 'rewrite_rules' option and retrieves it. This prevents having to

	 * process all of the permalinks to get the rewrite rules in the form of

	 * caching.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return array Rewrite rules.

	 */

	function wp_rewrite_rules() {

		$this->rules = get_option('rewrite_rules');

		if ( empty($this->rules) ) {

			$this->matches = 'matches';

			$this->rewrite_rules();

			update_option('rewrite_rules', $this->rules);

		}



		return $this->rules;

	}



	/**

	 * Retrieve mod_rewrite formatted rewrite rules to write to .htaccess.

	 *

	 * Does not actually write to the .htaccess file, but creates the rules for

	 * the process that will.

	 *

	 * Will add  the non_wp_rules property rules to the .htaccess file before

	 * the WordPress rewrite rules one.

	 *

	 * @since 1.5.0

	 * @access public

	 *

	 * @return string

	 */

	function mod_rewrite_rules() {

		if ( ! $this->using_permalinks() )

			return '';



		$site_root = parse_url(get_option('siteurl'));

		if ( isset( $site_root['path'] ) )

			$site_root = trailingslashit($site_root['path']);



		$home_root = parse_url(home_url());

		if ( isset( $home_root['path'] ) )

			$home_root = trailingslashit($home_root['path']);

		else

			$home_root = '/';



		$rules = "<IfModule mod_rewrite.c>\n";

		$rules .= "RewriteEngine On\n";

		$rules .= "RewriteBase $home_root\n";

		$rules .= "RewriteRule ^index\.php$ - [L]\n"; // Prevent -f checks on index.php.



		//add in the rules that don't redirect to WP's index.php (and thus shouldn't be handled by WP at all)

		foreach ( (array) $this->non_wp_rules as $match => $query) {

			// Apache 1.3 does not support the reluctant (non-greedy) modifier.

			$match = str_replace('.+?', '.+', $match);



			// If the match is unanchored and greedy, prepend rewrite conditions

			// to avoid infinite redirects and eclipsing of real files.

			//if ($match == '(.+)/?$' || $match == '([^/]+)/?$' ) {

				//nada.

			//}



			$rules .= 'RewriteRule ^' . $match . ' ' . $home_root . $query . " [QSA,L]\n";

		}



		if ( $this->use_verbose_rules ) {

			$this->matches = '';

			$rewrite = $this->rewrite_rules();

			$num_rules = count($rewrite);

			$rules .= "RewriteCond %{REQUEST_FILENAME} -f [OR]\n" .

				"RewriteCond %{REQUEST_FILENAME} -d\n" .

				"RewriteRule ^.*$ - [S=$num_rules]\n";



			foreach ( (array) $rewrite as $match => $query) {

				// Apache 1.3 does not support the reluctant (non-greedy) modifier.

				$match = str_replace('.+?', '.+', $match);



				// If the match is unanchored and greedy, prepend rewrite conditions

				// to avoid infinite redirects and eclipsing of real files.

				//if ($match == '(.+)/?$' || $match == '([^/]+)/?$' ) {

					//nada.

				//}



				if ( strpos($query, $this->index) !== false )

					$rules .= 'RewriteRule ^' . $match …
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