enmi-conf.org: comparison wp/wp-includes/rewrite.php

equal deleted inserted replaced

-:490d5cc509ed
+:cf61fcea0001
 * @package WordPress
 * @subpackage Rewrite
 */
 /**
-* Add a straight rewrite rule.
+* Endpoint Mask for default, which is nothing.
 *
-* @see WP_Rewrite::add_rule() for long description.
+* @since 2.1.0
-* @since 2.1.0
+*/
-*
+define('EP_NONE', 0);
-* @param string $regex Regular Expression to match request against.
-* @param string $redirect Page to redirect to.
+/**
-* @param string $after Optional, default is 'bottom'. Where to add rule, can also be 'top'.
+* Endpoint Mask for Permalink.
-*/
+*
-function add_rewrite_rule($regex, $redirect, $after = 'bottom') {
+* @since 2.1.0
-	global $wp_rewrite;
+*/
-	$wp_rewrite->add_rule($regex, $redirect, $after);
+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 all archive views.
+*
+* @since 3.7.0
+*/
+define( 'EP_ALL_ARCHIVES', EP_DATE | EP_YEAR | EP_MONTH | EP_DAY | EP_CATEGORIES | EP_TAGS | EP_AUTHORS );
+/**
+* Endpoint Mask for everything.
+*
+* @since 2.1.0
+*/
+define( 'EP_ALL', EP_PERMALINK | EP_ATTACHMENT | EP_ROOT | EP_COMMENTS | EP_SEARCH | EP_PAGES | EP_ALL_ARCHIVES );
+/**
+* Adds a rewrite rule that transforms a URL structure to a set of query vars.
+*
+* Any value in the $after parameter that isn't 'bottom' will result in the rule
+* being placed at the top of the rewrite rules.
+*
+* @since 2.1.0
+* @since 4.4.0 Array support was added to the `$query` parameter.
+*
+* @global WP_Rewrite $wp_rewrite WordPress Rewrite Component.
+*
+* @param string       $regex Regular expression to match request against.
+* @param string|array $query The corresponding query vars for this rewrite rule.
+* @param string       $after Optional. Priority of the new rule. Accepts 'top'
+*                            or 'bottom'. Default 'bottom'.
+*/
+function add_rewrite_rule( $regex, $query, $after = 'bottom' ) {
+	global $wp_rewrite;
+	$wp_rewrite->add_rule( $regex, $query, $after );
 }
 /**
 * Add a new rewrite tag (like %postname%).
 *
 * The $query parameter is optional. If it is omitted you must ensure that
-* you call this on, or before, the 'init' hook. This is because $query defaults
+* you call this on, or before, the {@see 'init'} hook. This is because $query defaults
 * to "$tag=", and for this to work a new query var has to be added.
 *
-* @see WP_Rewrite::add_rewrite_tag()
+* @since 2.1.0
-* @since 2.1.0
+*
-*
+* @global WP_Rewrite $wp_rewrite
-* @param string $tag Name of the new rewrite tag.
+* @global WP         $wp
+*
+* @param string $tag   Name of the new rewrite tag.
 * @param string $regex Regular expression to substitute the tag for in rewrite rules.
-* @param string $query String to append to the rewritten query. Must end in '='. Optional.
+* @param string $query Optional. String to append to the rewritten query. Must end in '='. Default empty.
 */
 function add_rewrite_tag( $tag, $regex, $query = '' ) {
 	// validate the tag's name
 	if ( strlen( $tag ) < 3 || $tag[0] != '%' || $tag[ strlen($tag) - 1 ] != '%' )
 		return;
 	$wp_rewrite->add_rewrite_tag( $tag, $regex, $query );
 }
 /**
+* Removes an existing rewrite tag (like %postname%).
+*
+* @since 4.5.0
+*
+* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
+*
+* @param string $tag Name of the rewrite tag.
+*/
+function remove_rewrite_tag( $tag ) {
+	global $wp_rewrite;
+	$wp_rewrite->remove_rewrite_tag( $tag );
+}
+/**
 * Add permalink structure.
 *
+* @since 3.0.0
+*
 * @see WP_Rewrite::add_permastruct()
-* @since 3.0.0
+* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
-* @param string $name Name for permalink structure.
+* @param string $name   Name for permalink structure.
 * @param string $struct Permalink structure.
-* @param array $args Optional configuration for building the rules from the permalink structure,
+* @param array  $args   Optional. Arguments for building the rules from the permalink structure,
-*     see {@link WP_Rewrite::add_permastruct()} for full details.
+*                       see WP_Rewrite::add_permastruct() for full details. Default empty array.
 */
 function add_permastruct( $name, $struct, $args = array() ) {
 	global $wp_rewrite;
-	// backwards compatibility for the old parameters: $with_front and $ep_mask
+	// Back-compat for the old parameters: $with_front and $ep_mask.
 	if ( ! is_array( $args ) )
 		$args = array( 'with_front' => $args );
 	if ( func_num_args() == 4 )
 		$args['ep_mask'] = func_get_arg( 3 );
-	return $wp_rewrite->add_permastruct( $name, $struct, $args );
+	$wp_rewrite->add_permastruct( $name, $struct, $args );
+}
+/**
+* Removes a permalink structure.
+*
+* Can only be used to remove permastructs that were added using add_permastruct().
+* Built-in permastructs cannot be removed.
+*
+* @since 4.5.0
+*
+* @see WP_Rewrite::remove_permastruct()
+* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
+*
+* @param string $name Name for permalink structure.
+*/
+function remove_permastruct( $name ) {
+	global $wp_rewrite;
+	$wp_rewrite->remove_permastruct( $name );
 }
 /**
 * Add a new feed type like /atom1/.
 *
 * @since 2.1.0
 *
-* @param string $feedname
+* @global WP_Rewrite $wp_rewrite
-* @param callback $function Callback to run on feed display.
+*
+* @param string   $feedname Feed name.
+* @param callable $function Callback to run on feed display.
 * @return string Feed action name.
 */
-function add_feed($feedname, $function) {
+function add_feed( $feedname, $function ) {
 	global $wp_rewrite;
-	if ( ! in_array($feedname, $wp_rewrite->feeds) ) //override the file if it is
+	if ( ! in_array( $feedname, $wp_rewrite->feeds ) ) {
 		$wp_rewrite->feeds[] = $feedname;
+	}
 	$hook = 'do_feed_' . $feedname;
 	// Remove default function hook
-	remove_action($hook, $hook);
+	remove_action( $hook, $hook );
-	add_action($hook, $function, 10, 1);
+	add_action( $hook, $function, 10, 2 );
 	return $hook;
 }
 /**
 * Remove rewrite rules and then recreate rewrite rules.
 *
-* @see WP_Rewrite::flush_rules()
 * @since 3.0.0
 *
+* @global WP_Rewrite $wp_rewrite
+*
 * @param bool $hard Whether to update .htaccess (hard flush) or just update
-* 	rewrite_rules transient (soft flush). Default is true (hard).
+* 	                 rewrite_rules transient (soft flush). Default is true (hard).
 */
 function flush_rewrite_rules( $hard = true ) {
 	global $wp_rewrite;
 	$wp_rewrite->flush_rules( $hard );
 }
-/**
-* 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 all archive views.
-*
-* @since 3.7.0
-*/
-define( 'EP_ALL_ARCHIVES', EP_DATE | EP_YEAR | EP_MONTH | EP_DAY | EP_CATEGORIES | EP_TAGS | EP_AUTHORS );
-/**
-* Endpoint Mask for everything.
-*
-* @since 2.1.0
-*/
-define( 'EP_ALL', EP_PERMALINK | EP_ATTACHMENT | EP_ROOT | EP_COMMENTS | EP_SEARCH | EP_PAGES | EP_ALL_ARCHIVES );
 /**
 * Add an endpoint, like /trackback/.
 *
 * Adding an endpoint creates extra rewrite rules for each of the matching
 *
 * When specifying $places ensure that you are using the EP_* constants (or a
 * combination of them using the bitwise OR operator) as their values are not
 * guaranteed to remain static (especially `EP_ALL`).
 *
-* Be sure to flush the rewrite rules - {@see flush_rewrite_rules()} - when your plugin gets
+* Be sure to flush the rewrite rules - see flush_rewrite_rules() - when your plugin gets
 * activated and deactivated.
 *
 * @since 2.1.0
-* @see WP_Rewrite::add_endpoint()
+* @since 4.3.0 Added support for skipping query var registration by passing `false` to `$query_var`.
-* @global object $wp_rewrite
+*
-*
+* @global WP_Rewrite $wp_rewrite
-* @param string $name Name of the endpoint.
+*
-* @param int $places Endpoint mask describing the places the endpoint should be added.
+* @param string      $name      Name of the endpoint.
-* @param string $query_var Name of the corresponding query variable. Defaults to $name.
+* @param int         $places    Endpoint mask describing the places the endpoint should be added.
-*/
+* @param string|bool $query_var Name of the corresponding query variable. Pass `false` to skip registering a query_var
-function add_rewrite_endpoint( $name, $places, $query_var = null ) {
+*                               for this endpoint. Defaults to the value of `$name`.
+*/
+function add_rewrite_endpoint( $name, $places, $query_var = true ) {
 	global $wp_rewrite;
 	$wp_rewrite->add_endpoint( $name, $places, $query_var );
 }
 /**
-* Filter the URL base for taxonomies.
+* Filters the URL base for taxonomies.
 *
 * To remove any manually prepended /index.php/.
 *
 * @access private
 * @since 2.6.0
 		$base = trim( $base, '/' );
 	}
 	return $base;
 }
-/**
-* Examine a url and try to determine the post ID it represents.
+/**
+* Resolve numeric slugs that collide with date permalinks.
+*
+* Permalinks of posts with numeric slugs can sometimes look to WP_Query::parse_query()
+* like a date archive, as when your permalink structure is `/%year%/%postname%/` and
+* a post with post_name '05' has the URL `/2015/05/`.
+*
+* This function detects conflicts of this type and resolves them in favor of the
+* post permalink.
+*
+* Note that, since 4.3.0, wp_unique_post_slug() prevents the creation of post slugs
+* that would result in a date archive conflict. The resolution performed in this
+* function is primarily for legacy content, as well as cases when the admin has changed
+* the site's permalink structure in a way that introduces URL conflicts.
+*
+* @since 4.3.0
+*
+* @param array $query_vars Optional. Query variables for setting up the loop, as determined in
+*                          WP::parse_request(). Default empty array.
+* @return array Returns the original array of query vars, with date/post conflicts resolved.
+*/
+function wp_resolve_numeric_slug_conflicts( $query_vars = array() ) {
+	if ( ! isset( $query_vars['year'] ) && ! isset( $query_vars['monthnum'] ) && ! isset( $query_vars['day'] ) ) {
+		return $query_vars;
+	}
+	// Identify the 'postname' position in the permastruct array.
+	$permastructs   = array_values( array_filter( explode( '/', get_option( 'permalink_structure' ) ) ) );
+	$postname_index = array_search( '%postname%', $permastructs );
+	if ( false === $postname_index ) {
+		return $query_vars;
+	}
+	/*
+	 * A numeric slug could be confused with a year, month, or day, depending on position. To account for
+	 * the possibility of post pagination (eg 2015/2 for the second page of a post called '2015'), our
+	 * `is_*` checks are generous: check for year-slug clashes when `is_year` *or* `is_month`, and check
+	 * for month-slug clashes when `is_month` *or* `is_day`.
+	 */
+	$compare = '';
+	if ( 0 === $postname_index && ( isset( $query_vars['year'] ) || isset( $query_vars['monthnum'] ) ) ) {
+		$compare = 'year';
+	} elseif ( '%year%' === $permastructs[ $postname_index - 1 ] && ( isset( $query_vars['monthnum'] ) || isset( $query_vars['day'] ) ) ) {
+		$compare = 'monthnum';
+	} elseif ( '%monthnum%' === $permastructs[ $postname_index - 1 ] && isset( $query_vars['day'] ) ) {
+		$compare = 'day';
+	}
+	if ( ! $compare ) {
+		return $query_vars;
+	}
+	// This is the potentially clashing slug.
+	$value = $query_vars[ $compare ];
+	$post = get_page_by_path( $value, OBJECT, 'post' );
+	if ( ! ( $post instanceof WP_Post ) ) {
+		return $query_vars;
+	}
+	// If the date of the post doesn't match the date specified in the URL, resolve to the date archive.
+	if ( preg_match( '/^([0-9]{4})\-([0-9]{2})/', $post->post_date, $matches ) && isset( $query_vars['year'] ) && ( 'monthnum' === $compare || 'day' === $compare ) ) {
+		// $matches[1] is the year the post was published.
+		if ( intval( $query_vars['year'] ) !== intval( $matches[1] ) ) {
+			return $query_vars;
+		}
+		// $matches[2] is the month the post was published.
+		if ( 'day' === $compare && isset( $query_vars['monthnum'] ) && intval( $query_vars['monthnum'] ) !== intval( $matches[2] ) ) {
+			return $query_vars;
+		}
+	}
+	/*
+	 * If the located post contains nextpage pagination, then the URL chunk following postname may be
+	 * intended as the page number. Verify that it's a valid page before resolving to it.
+	 */
+	$maybe_page = '';
+	if ( 'year' === $compare && isset( $query_vars['monthnum'] ) ) {
+		$maybe_page = $query_vars['monthnum'];
+	} elseif ( 'monthnum' === $compare && isset( $query_vars['day'] ) ) {
+		$maybe_page = $query_vars['day'];
+	}
+	// Bug found in #11694 - 'page' was returning '/4'
+	$maybe_page = (int) trim( $maybe_page, '/' );
+	$post_page_count = substr_count( $post->post_content, '<!--nextpage-->' ) + 1;
+	// If the post doesn't have multiple pages, but a 'page' candidate is found, resolve to the date archive.
+	if ( 1 === $post_page_count && $maybe_page ) {
+		return $query_vars;
+	}
+	// If the post has multiple pages and the 'page' number isn't valid, resolve to the date archive.
+	if ( $post_page_count > 1 && $maybe_page > $post_page_count ) {
+		return $query_vars;
+	}
+	// If we've gotten to this point, we have a slug/date clash. First, adjust for nextpage.
+	if ( '' !== $maybe_page ) {
+		$query_vars['page'] = intval( $maybe_page );
+	}
+	// Next, unset autodetected date-related query vars.
+	unset( $query_vars['year'] );
+	unset( $query_vars['monthnum'] );
+	unset( $query_vars['day'] );
+	// Then, set the identified post.
+	$query_vars['name'] = $post->post_name;
+	// Finally, return the modified query vars.
+	return $query_vars;
+}
+/**
+* Examine a URL and try to determine the post ID it represents.
 *
 * Checks are supposedly from the hosted site blog.
 *
 * @since 1.0.0
+*
+* @global WP_Rewrite $wp_rewrite
+* @global WP         $wp
 *
 * @param string $url Permalink to check.
 * @return int Post ID, or 0 on failure.
 */
-function url_to_postid($url) {
+function url_to_postid( $url ) {
 	global $wp_rewrite;
 	/**
-	 * Filter the URL to derive the post ID from.
+	 * Filters the URL to derive the post ID from.
 	 *
 	 * @since 2.2.0
 	 *
 	 * @param string $url The URL to derive the post ID from.
 	 */
 	$url = apply_filters( 'url_to_postid', $url );
+	$url_host      = str_replace( 'www.', '', parse_url( $url, PHP_URL_HOST ) );
+	$home_url_host = str_replace( 'www.', '', parse_url( home_url(), PHP_URL_HOST ) );
+	// Bail early if the URL does not belong to this site.
+	if ( $url_host && $url_host !== $home_url_host ) {
+		return 0;
+	}
 	// 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;
 	}
+	// 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];
+	// Set the correct URL scheme.
+	$scheme = parse_url( home_url(), PHP_URL_SCHEME );
+	$url = set_url_scheme( $url, $scheme );
+	// Add 'www.' if it is absent and should be there
+	if ( false !== strpos(home_url(), '://www.') && false === strpos($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);
+	if ( trim( $url, '/' ) === home_url() && 'page' == get_option( 'show_on_front' ) ) {
+		$page_on_front = get_option( 'page_on_front' );
+		if ( $page_on_front && get_post( $page_on_front ) instanceof WP_Post ) {
+			return (int) $page_on_front;
+		}
+	}
 	// 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( $wp_rewrite->index . '/', '', $url );
 		if ( preg_match("#^$match#", $request_match, $matches) ) {
 			if ( $wp_rewrite->use_verbose_page_rules && preg_match( '/pagename=\$matches\[([0-9]+)\]/', $query, $varmatch ) ) {
 				// This is a verbose page match, let's check to be sure about it.
-				if ( ! get_page_by_path( $matches[ $varmatch[1] ] ) )
+				$page = get_page_by_path( $matches[ $varmatch[1] ] );
+				if ( ! $page ) {
 					continue;
+				}
+				$post_status_obj = get_post_status_object( $page->post_status );
+				if ( ! $post_status_obj->public && ! $post_status_obj->protected
+					&& ! $post_status_obj->private && $post_status_obj->exclude_from_search ) {
+					continue;
+				}
 			}
 			// Got a match.
 			// Trim the query of everything up to the '?'.
 			$query = preg_replace("!^.+\?!", '', $query);
 						$query['name'] = $value;
 					}
 				}
 			}
+			// Resolve conflicts between posts with numeric slugs and date archive queries.
+			$query = wp_resolve_numeric_slug_conflicts( $query );
 			// 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 {
-	/**
-	 * Permalink structure for posts.
-	 *
-	 * @since 1.5.0
-	 * @var string
-	 */
-	public $permalink_structure;
-	/**
-	 * Whether to add trailing slashes.
-	 *
-	 * @since 2.2.0
-	 * @var bool
-	 */
-	public $use_trailing_slashes;
-	/**
-	 * Base for the author permalink structure (example.com/$author_base/authorname).
-	 *
-	 * @since 1.5.0
-	 * @access private
-	 * @var string
-	 */
-	var $author_base = 'author';
-	/**
-	 * Permalink structure for author archives.
-	 *
-	 * @since 1.5.0
-	 * @access private
-	 * @var string
-	 */
-	var $author_structure;
-	/**
-	 * Permalink structure for date archives.
-	 *
-	 * @since 1.5.0
-	 * @access private
-	 * @var string
-	 */
-	var $date_structure;
-	/**
-	 * Permalink structure for pages.
-	 *
-	 * @since 1.5.0
-	 * @access private
-	 * @var string
-	 */
-	var $page_structure;
-	/**
-	 * Base of the search permalink structure (example.com/$search_base/query).
-	 *
-	 * @since 1.5.0
-	 * @access private
-	 * @var string
-	 */
-	var $search_base = 'search';
-	/**
-	 * Permalink 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
-	 * @var string
-	 */
-	public $pagination_base = 'page';
-	/**
-	 * Comments pagination permalink base.
-	 *
-	 * @since 4.2.0
-	 * @access private
-	 * @var string
-	 */
-	var $comments_pagination_base = 'comment-page';
-	/**
-	 * Feed permalink base.
-	 *
-	 * @since 1.5.0
-	 * @access private
-	 * @var string
-	 */
-	var $feed_base = 'feed';
-	/**
-	 * Comments feed permalink structure.
-	 *
-	 * @since 1.5.0
-	 * @access private
-	 * @var string
-	 */
-	var $comment_feed_structure;
-	/**
-	 * Feed request permalink structure.
-	 *
-	 * @since 1.5.0
-	 * @access private
-	 * @var string
-	 */
-	var $feed_structure;
-	/**
-	 * The static portion of the post permalink structure.
-	 *
-	 * If the permalink structure is "/archive/%post_id%" then the front
-	 * is "/archive/". If the permalink structure is "/%year%/%postname%/"
-	 * then the front is "/".
-	 *
-	 * @see WP_Rewrite::init()
-	 * @since 1.5.0
-	 * @var string
-	 */
-	public $front;
-	/**
-	 * The prefix for all permalink structures.
-	 *
-	 * If PATHINFO/index permalinks are in use then the root is the value of
-	 * {@link WP_Rewrite::$index} with a trailing slash appended. Otherwise
-	 * the root will be empty.
-	 *
-	 * @see WP_Rewrite::init()
-	 * @see WP_Rewrite::using_index_permalinks()
-	 * @since 1.5.0
-	 * @var string
-	 */
-	public $root = '';
-	/**
-	 * The name of the index file which is the entry point to all requests.
-	 *
-	 * @since 1.5.0
-	 * @access public
-	 * @var string
-	 */
-	public $index = 'index.php';
-	/**
-	 * Variable name to use for regex matches in the rewritten query.
-	 *
-	 * @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 WordPress' index.php.
-	 *
-	 * These rules are written to the mod_rewrite portion of the .htaccess,
-	 * and are added by {@link add_external_rule()}.
-	 *
-	 * @since 2.1.0
-	 * @access private
-	 * @var array
-	 */
-	var $non_wp_rules = array();
-	/**
-	 * Extra permalink structures, e.g. categories, added by {@link add_permastruct()}.
-	 *
-	 * @since 2.1.0
-	 * @access private
-	 * @var array
-	 */
-	var $extra_permastructs = array();
-	/**
-	 * Endpoints (like /trackback/) added by {@link add_rewrite_endpoint()}.
-	 *
-	 * @since 2.1.0
-	 * @access private
-	 * @var array
-	 */
-	var $endpoints;
-	/**
-	 * Whether to write every mod_rewrite rule for WordPress into the .htaccess file.
-	 *
-	 * This is off by default, turning it on might print a lot of rewrite rules
-	 * to the .htaccess file.
-	 *
-	 * @see WP_Rewrite::mod_rewrite_rules()
-	 * @since 2.0.0
-	 * @access public
-	 * @var bool
-	 */
-	public $use_verbose_rules = false;
-	/**
-	 * Could post permalinks be confused with those of pages?
-	 *
-	 * If the first rewrite tag in the post permalink structure is one that could
-	 * also match a page name (e.g. %postname% or %author%) then this flag is
-	 * set to true. Prior to WordPress 3.3 this flag indicated that every page
-	 * would have a set of rules added to the top of the rewrite rules array.
-	 * Now it tells {@link WP::parse_request()} to check if a URL matching the
-	 * page permastruct is actually a page before accepting it.
-	 *
-	 * @link https://core.trac.wordpress.org/ticket/16687
-	 * @see WP_Rewrite::init()
-	 * @since 2.5.0
-	 * @access public
-	 * @var bool
-	 */
-	public $use_verbose_page_rules = true;
-	/**
-	 * Rewrite tags that can be used in permalink structures.
-	 *
-	 * These are translated into the regular expressions stored in
-	 * {@link WP_Rewrite::$rewritereplace} and are rewritten to the
-	 * query variables listed in {@link WP_Rewrite::$queryreplace}.
-	 *
-	 * Additional tags can be added with {@link add_rewrite_tag()}.
-	 *
-	 * @since 1.5.0
-	 * @access private
-	 * @var array
-	 */
-	var $rewritecode = array(
-		'%year%',
-		'%monthnum%',
-		'%day%',
-		'%hour%',
-		'%minute%',
-		'%second%',
-		'%postname%',
-		'%post_id%',
-		'%author%',
-		'%pagename%',
-		'%search%'
-	);
-	/**
-	 * Regular expressions to be substituted into rewrite rules in place
-	 * of rewrite tags, see {@link WP_Rewrite::$rewritecode}.
-	 *
-	 * @since 1.5.0
-	 * @access private
-	 * @var array
-	 */
-	var $rewritereplace = array(
-		'([0-9]{4})',
-		'([0-9]{1,2})',
-		'([0-9]{1,2})',
-		'([0-9]{1,2})',
-		'([0-9]{1,2})',
-		'([0-9]{1,2})',
-		'([^/]+)',
-		'([0-9]+)',
-		'([^/]+)',
-		'([^/]+?)',
-		'(.+)'
-	);
-	/**
-	 * Query variables that rewrite tags map to, see {@link WP_Rewrite::$rewritecode}.
-	 *
-	 * @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
-	 * @var array
-	 */
-	public $feeds = array( 'feed', 'rdf', 'rss', 'rss2', 'atom' );
-	/**
-	 * Whether permalinks are being used.
-	 *
-	 * This can be either rewrite module or permalink in the HTTP query string.
-	 *
-	 * @since 1.5.0
-	 * @access public
-	 *
-	 * @return bool True, if permalinks are enabled.
-	 */
-	public function using_permalinks() {
-		return ! empty($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
-	 */
-	public 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
-	 */
-	public 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 $number Index number.
-	 * @return string
-	 */
-	public function preg_index($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.
-	 */
-	public function page_uri_index() {
-		global $wpdb;
-		//get pages in order of hierarchy, i.e. children after parents
-		$pages = $wpdb->get_results("SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE post_type = 'page' AND post_status != 'auto-draft'");
-		$posts = get_page_hierarchy( $pages );
-		// If we have no pages get out quick
-		if ( !$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.
-	 *
-	 * @since 1.5.0
-	 * @access public
-	 *
-	 * @return array
-	 */
-	public function page_rewrite_rules() {
-		// the extra .? at the beginning prevents clashes with other regular expressions in the rules array
-		$this->add_rewrite_tag( '%pagename%', '(.?.+?)', 'pagename=' );
-		return $this->generate_rewrite_rules( $this->get_page_permastruct(), EP_PAGES, true, true, false, false );
-	}
-	/**
-	 * Retrieve date permalink structure, with year, month, and day.
-	 *
-	 * The permalink structure for the date, if not set already depends on the
-	 * permalink structure. It can be one of three formats. The first is year,
-	 * month, day; the second is day, month, year; and the last format is month,
-	 * day, year. These are matched against the permalink structure for which
-	 * one is used. If none matches, then the default will be used, which is
-	 * year, month, day.
-	 *
-	 * Prevents post ID and date permalinks from overlapping. In the case of
-	 * post_id, the date permalink will be prepended with front permalink with
-	 * 'date/' before the actual permalink to form the complete date permalink
-	 * structure.
-	 *
-	 * @since 1.5.0
-	 * @access public
-	 *
-	 * @return string|false False on no permalink structure. Date permalink structure.
-	 */
-	public function get_date_permastruct() {
-		if ( isset($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 false|string False on failure. Year structure on success.
-	 */
-	public function get_year_permastruct() {
-		$structure = $this->get_date_permastruct();
-		if ( empty($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 false|string False on failure. Year/Month structure on success.
-	 */
-	public function get_month_permastruct() {
-		$structure = $this->get_date_permastruct();
-		if ( empty($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 string|false False on failure. Year/Month/Day structure on success.
-	 */
-	public function get_day_permastruct() {
-		return $this->get_date_permastruct();
-	}
-	/**
-	 * 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.
-	 */
-	public 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.
-	 */
-	public 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 $name Permalink structure name.
-	 * @return string|bool False if not found. Permalink structure string.
-	 */
-	public function get_extra_permastruct($name) {
-		if ( empty($this->permalink_structure) )
-			return false;
-		if ( isset($this->extra_permastructs[$name]) )
-			return $this->extra_permastructs[$name]['struct'];
-		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|false False if not found. Permalink structure string.
-	 */
-	public 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 $this->author_structure;
-	}
-	/**
-	 * Retrieve the search permalink structure.
-	 *
-	 * The permalink structure is root property, search base, and finally
-	 * '/%search%'. Will set the search_structure property and then return it
-	 * without attempting to set the value again.
-	 *
-	 * @since 1.5.0
-	 * @access public
-	 *
-	 * @return string|false False if not found. Permalink structure string.
-	 */
-	public function get_search_permastruct() {
-		if ( isset($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 $this->search_structure;
-	}
-	/**
-	 * Retrieve the page permalink structure.
-	 *
-	 * The permalink structure is root property, and '%pagename%'. Will set the
-	 * page_structure property and then return it without attempting to set the
-	 * value again.
-	 *
-	 * @since 1.5.0
-	 * @access public
-	 *
-	 * @return string|false False if not found. Permalink structure string.
-	 */
-	public function get_page_permastruct() {
-		if ( isset($this->page_structure) )
-			return $this->page_structure;
-		if (empty($this->permalink_structure)) {
-			$this->page_structure = '';
-			return false;
-		}
-		$this->page_structure = $this->root . '%pagename%';
-		return $this->page_structure;
-	}
-	/**
-	 * Retrieve the feed permalink structure.
-	 *
-	 * The permalink structure is root property, feed base, and finally
-	 * '/%feed%'. Will set the feed_structure property and then return it
-	 * without attempting to set the value again.
-	 *
-	 * @since 1.5.0
-	 * @access public
-	 *
-	 * @return string|false False if not found. Permalink structure string.
-	 */
-	public function get_feed_permastruct() {
-		if ( isset($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 $this->feed_structure;
-	}
-	/**
-	 * Retrieve the comment feed permalink structure.
-	 *
-	 * The permalink structure is root property, comment base property, feed
-	 * base and finally '/%feed%'. Will set the comment_feed_structure property
-	 * and then return it without attempting to set the value again.
-	 *
-	 * @since 1.5.0
-	 * @access public
-	 *
-	 * @return string|bool False if not found. Permalink structure string.
-	 */
-	public function get_comment_feed_permastruct() {
-		if ( isset($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 $this->comment_feed_structure;
-	}
-	/**
-	 * Add or update existing rewrite tags (e.g. %postname%).
-	 *
-	 * If the tag already exists, replace the existing pattern and query for
-	 * that tag, otherwise add the new tag.
-	 *
-	 * @see WP_Rewrite::$rewritecode
-	 * @see WP_Rewrite::$rewritereplace
-	 * @see WP_Rewrite::$queryreplace
-	 * @since 1.5.0
-	 * @access public
-	 *
-	 * @param string $tag Name of the rewrite tag to add or update.
-	 * @param string $regex Regular expression to substitute the tag for in rewrite rules.
-	 * @param string $query String to append to the rewritten query. Must end in '='.
-	 */
-	public function add_rewrite_tag( $tag, $regex, $query ) {
-		$position = array_search( $tag, $this->rewritecode );
-		if ( false !== $position && null !== $position ) {
-			$this->rewritereplace[ $position ] = $regex;
-			$this->queryreplace[ $position ] = $query;
-		} else {
-			$this->rewritecode[] = $tag;
-			$this->rewritereplace[] = $regex;
-			$this->queryreplace[] = $query;
-		}
-	}
-	/**
-	 * Generate rewrite rules from a 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 Endpoint mask defining what endpoints are added to the structure. Default is EP_NONE.
-	 * @param bool $paged Should archive pagination rules be added for the structure? Default is true.
-	 * @param bool $feed Should feed rewrite rules be added for the structure? Default is true.
-	 * @param bool $forcomments Should the feed rules be a query for a comments feed? Default is false.
-	 * @param bool $walk_dirs Should the 'directories' making up the structure be walked over and rewrite rules
-	 *                        built for each in turn? Default is true.
-	 * @param bool $endpoints Should endpoints be applied to the generated rewrite rules? Default is true.
-	 * @return array Rewrite rule list.
-	 */
-	public function generate_rewrite_rules($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 = $this->comments_pagination_base . '-([0-9]{1,})/?$';
-		//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[2] . '=';
-				$ep_query_append[$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
-		$queries = array();
-		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%/%monthnum%/%postname% would create
-		//rewrite rules for /%year%/, /%year%/%monthnum%/ and /%year%/%monthnum%/%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 = ( ! empty( $num_toks ) && isset( $queries[$num_toks - 1] ) ) ? $queries[$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));
-			} elseif ( 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 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(3);
-								$rewrite[$sub2 . $regex] = $subquery . $ep[1] . $this->preg_index(3);
-							}
-						}
-					}
-					//now we've finished with endpoints, finish off the $sub1 and $sub2 matches
-					//add a ? as we don't have to match that last slash, and finally a $ so we
-					//match to the end of the URL
-					$sub1 .= '?$';
-					$sub2 .= '?$';
-					//post pagination, e.g. <permalink>/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 $walk_dirs Optional, default is false. Whether to create list of directories to walk over.
-	 * @return array
-	 */
-	public function generate_rewrite_rule($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.
-	 */
-	public 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();
-		// Old feed and service files
-		$deprecated_files = array(
-			'.*wp-(atom|rdf|rss|rss2|feed|commentsrss2)\.php$' => $this->index . '?feed=old',
-			'.*wp-app\.php(/.*)?$' => $this->index . '?error=403',
-		);
-		// 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';
-		}
-		$registration_pages['.*wp-register.php$'] = $this->index . '?register=true'; // Deprecated
-		// Post rewrite rules.
-		$post_rewrite = $this->generate_rewrite_rules( $this->permalink_structure, EP_PERMALINK );
-		/**
-		 * Filter rewrite rules used for "post" archives.
-		 *
-		 * @since 1.5.0
-		 *
-		 * @param array $post_rewrite The rewrite rules for posts.
-		 */
-		$post_rewrite = apply_filters( 'post_rewrite_rules', $post_rewrite );
-		// Date rewrite rules.
-		$date_rewrite = $this->generate_rewrite_rules($this->get_date_permastruct(), EP_DATE);
-		/**
-		 * Filter rewrite rules used for date archives.
-		 *
-		 * Likely date archives would include /yyyy/, /yyyy/mm/, and /yyyy/mm/dd/.
-		 *
-		 * @since 1.5.0
-		 *
-		 * @param array $date_rewrite The rewrite rules for date archives.
-		 */
-		$date_rewrite = apply_filters( 'date_rewrite_rules', $date_rewrite );
-		// Root-level rewrite rules.
-		$root_rewrite = $this->generate_rewrite_rules($this->root . '/', EP_ROOT);
-		/**
-		 * Filter rewrite rules used for root-level archives.
-		 *
-		 * Likely root-level archives would include pagination rules for the homepage
-		 * as well as site-wide post feeds (e.g. /feed/, and /feed/atom/).
-		 *
-		 * @since 1.5.0
-		 *
-		 * @param array $root_rewrite The root-level rewrite rules.
-		 */
-		$root_rewrite = apply_filters( 'root_rewrite_rules', $root_rewrite );
-		// Comments rewrite rules.
-		$comments_rewrite = $this->generate_rewrite_rules($this->root . $this->comments_base, EP_COMMENTS, false, true, true, false);
-		/**
-		 * Filter rewrite rules used for comment feed archives.
-		 *
-		 * Likely comments feed archives include /comments/feed/, and /comments/feed/atom/.
-		 *
-		 * @since 1.5.0
-		 *
-		 * @param array $comments_rewrite The rewrite rules for the site-wide comments feeds.
-		 */
-		$comments_rewrite = apply_filters( 'comments_rewrite_rules', $comments_rewrite );
-		// Search rewrite rules.
-		$search_structure = $this->get_search_permastruct();
-		$search_rewrite = $this->generate_rewrite_rules($search_structure, EP_SEARCH);
-		/**
-		 * Filter rewrite rules used for search archives.
-		 *
-		 * Likely search-related archives include /search/search+query/ as well as
-		 * pagination and feed paths for a search.
-		 *
-		 * @since 1.5.0
-		 *
-		 * @param array $search_rewrite The rewrite rules for search queries.
-		 */
-		$search_rewrite = apply_filters( 'search_rewrite_rules', $search_rewrite );
-		// Author rewrite rules.
-		$author_rewrite = $this->generate_rewrite_rules($this->get_author_permastruct(), EP_AUTHORS);
-		/**
-		 * Filter rewrite rules used for author archives.
-		 *
-		 * Likely author archives would include /author/author-name/, as well as
-		 * pagination and feed paths for author archives.
-		 *
-		 * @since 1.5.0
-		 *
-		 * @param array $author_rewrite The rewrite rules for author archives.
-		 */
-		$author_rewrite = apply_filters( 'author_rewrite_rules', $author_rewrite );
-		// Pages rewrite rules.
-		$page_rewrite = $this->page_rewrite_rules();
-		/**
-		 * Filter rewrite rules used for "page" post type archives.
-		 *
-		 * @since 1.5.0
-		 *
-		 * @param array $page_rewrite The rewrite rules for the "page" post type.
-		 */
-		$page_rewrite = apply_filters( 'page_rewrite_rules', $page_rewrite );
-		// Extra permastructs.
-		foreach ( $this->extra_permastructs as $permastructname => $struct ) {
-			if ( is_array( $struct ) ) {
-				if ( count( $struct ) == 2 )
-					$rules = $this->generate_rewrite_rules( $struct[0], $struct[1] );
-				else
-					$rules = $this->generate_rewrite_rules( $struct['struct'], $struct['ep_mask'], $struct['paged'], $struct['feed'], $struct['forcomments'], $struct['walk_dirs'], $struct['endpoints'] );
-			} else {
-				$rules = $this->generate_rewrite_rules( $struct );
-			}
-			/**
-			 * Filter rewrite rules used for individual permastructs.
-			 *
-			 * The dynamic portion of the hook name, `$permastructname`, refers
-			 * to the name of the registered permastruct, e.g. 'post_tag' (tags),
-			 * 'category' (categories), etc.
-			 *
-			 * @since 3.1.0
-			 *
-			 * @param array $rules The rewrite rules generated for the current permastruct.
-			 */
-			$rules = apply_filters( $permastructname . '_rewrite_rules', $rules );
-			if ( 'post_tag' == $permastructname ) {
-				/**
-				 * Filter rewrite rules used specifically for Tags.
-				 *
-				 * @since 2.3.0
-				 * @deprecated 3.1.0 Use 'post_tag_rewrite_rules' instead
-				 *
-				 * @param array $rules The rewrite rules generated for tags.
-				 */
-				$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, $deprecated_files, $registration_pages, $root_rewrite, $comments_rewrite, $search_rewrite,  $author_rewrite, $date_rewrite, $page_rewrite, $post_rewrite, $this->extra_rules);
-		else
-			$this->rules = array_merge($this->extra_rules_top, $robots_rewrite, $deprecated_files, $registration_pages, $root_rewrite, $comments_rewrite, $search_rewrite,  $author_rewrite, $date_rewrite, $post_rewrite, $page_rewrite, $this->extra_rules);
-		/**
-		 * Fires after the rewrite rules are generated.
-		 *
-		 * @since 1.5.0
-		 *
-		 * @param WP_Rewrite $this Current WP_Rewrite instance, passed by reference.
-		 */
-		do_action_ref_array( 'generate_rewrite_rules', array( &$this ) );
-		/**
-		 * Filter the full set of generated rewrite rules.
-		 *
-		 * @since 1.5.0
-		 *
-		 * @param array $this->rules The compiled array of rewrite rules.
-		 */
-		$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.
-	 */
-	public 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
-	 */
-	public function mod_rewrite_rules() {
-		if ( ! $this->using_permalinks() )
-			return '';
-		$site_root = parse_url( site_url() );
-		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 . ' ' . $home_root . $query . " [QSA,L]\n";
-				else
-					$rules .= 'RewriteRule ^' . $match . ' ' . $site_root . $query . " [QSA,L]\n";
-			}
-		} else {
-			$rules .= "RewriteCond %{REQUEST_FILENAME} !-f\n" .
-				"RewriteCond %{REQUEST_FILENAME} !-d\n" .
-				"RewriteRule . {$home_root}{$this->index} [L]\n";
-		}
-		$rules .= "</IfModule>\n";
-		/**
-		 *
-		 * Filter the list of rewrite rules formatted for output to an .htaccess file.
-		 *
-		 * @since 1.5.0
-		 *
-		 * @param string $rules mod_rewrite Rewrite rules formatted for .htaccess.
-		 */
-		$rules = apply_filters( 'mod_rewrite_rules', $rules );
-		/**
-		 * Filter the list of rewrite rules formatted for output to an .htaccess file.
-		 *
-		 * @since 1.5.0
-		 * @deprecated 1.5.0 Use the mod_rewrite_rules filter instead.
-		 *
-		 * @param string $rules mod_rewrite Rewrite rules formatted for .htaccess.
-		 */
-		$rules = apply_filters( 'rewrite_rules', $rules );  // Deprecated
-		return $rules;
-	}
-	/**
-	 * Retrieve IIS7 URL Rewrite formatted rewrite rules to write to web.config file.
-	 *
-	 * Does not actually write to the web.config file, but creates the rules for
-	 * the process that will.
-	 *
-	 * @since 2.8.0
-	 * @access public
-	 *
-	 * @return string
-	 */
-	public function iis7_url_rewrite_rules( $add_parent_tags = false ) {
-		if ( ! $this->using_permalinks() )
-			return '';
-		$rules = '';
-		if ( $add_parent_tags ) {
-			$rules .= '<configuration>
-	<system.webServer>
-		<rewrite>
-			<rules>';
-		}
-		$rules .= '
-			<rule name="wordpress" patternSyntax="Wildcard">
-				<match url="*" />
-					<conditions>
-						<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
-						<add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
-					</conditions>
-				<action type="Rewrite" url="index.php" />
-			</rule>';
-		if ( $add_parent_tags ) {
-			$rules .= '
-			</rules>
-		</rewrite>
-	</system.webServer>
-</configuration>';
-		}
-		/**
-		 * Filter the list of rewrite rules formatted for output to a web.config.
-		 *
-		 * @since 2.8.0
-		 *
-		 * @param string $rules Rewrite rules formatted for IIS web.config.
-		 */
-		$rules = apply_filters( 'iis7_url_rewrite_rules', $rules );
-		return $rules;
-	}
-	/**
-	 * Add a straight rewrite rule.
-	 *
-	 * Any value in the $after parameter that isn't 'bottom' will be placed at
-	 * the top of the rules.
-	 *
-	 * @since 2.1.0
-	 * @access public
-	 *
-	 * @param string $regex Regular expression to match against request.
-	 * @param string $redirect URL regex redirects to when regex matches request.
-	 * @param string $after Optional, default is bottom. Location to place rule.
-	 */
-	public function add_rule($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 {
-			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;
-		}
-	}
-	/**
-	 * Add a rule that doesn't redirect to index.php.
-	 *
-	 * Can redirect to any place.
-	 *
-	 * @since 2.1.0
-	 * @access public
-	 *
-	 * @param string $regex Regular expression to match against request.
-	 * @param string $redirect URL regex redirects to when regex matches request.
-	 */
-	public function add_external_rule($regex, $redirect) {
-		$this->non_wp_rules[$regex] = $redirect;
-	}
-	/**
-	 * Add an endpoint, like /trackback/.
-	 *
-	 * @since 2.1.0
-	 * @since 3.9.0 $query_var parameter added.
-	 * @access public
-	 *
-	 * @see add_rewrite_endpoint() for full documentation.
-	 * @uses WP::add_query_var()
-	 *
-	 * @param string $name      Name of the endpoint.
-	 * @param int    $places    Endpoint mask describing the places the endpoint should be added.
-	 * @param string $query_var Name of the corresponding query variable. Default is value of $name.
-	 */
-	public function add_endpoint( $name, $places, $query_var = null ) {
-		global $wp;
-		if ( null === $query_var ) {
-			$query_var = $name;
-		}
-		$this->endpoints[] = array( $places, $name, $query_var );
-		$wp->add_query_var( $query_var );
-	}
-	/**
-	 * Add a new permalink structure.
-	 *
-	 * A permalink structure (permastruct) is an abstract definition of a set of rewrite rules; it
-	 * is an easy way of expressing a set of regular expressions that rewrite to a set of query strings.
-	 * The new permastruct is added to the {@link WP_Rewrite::$extra_permastructs} array. When the
-	 * rewrite rules are built by {@link WP_Rewrite::rewrite_rules()} all of these extra permastructs
-	 * are passed to {@link WP_Rewrite::generate_rewrite_rules()} which transforms them into the
-	 * regular expressions that many love to hate.
-	 *
-	 * The $args parameter gives you control over how {@link WP_Rewrite::generate_rewrite_rules()}
-	 * works on the new permastruct.
-	 *
-	 * @since 2.5.0
-	 * @access public
-	 *
-	 * @param string $name Name for permalink structure.
-	 * @param string $struct Permalink structure (e.g. category/%category%)
-	 * @param array $args Optional configuration for building the rules from the permalink structure:
-	 *     - with_front (bool) - Should the structure be prepended with WP_Rewrite::$front? Default is true.
-	 *     - ep_mask (int) - Endpoint mask defining what endpoints are added to the structure. Default is EP_NONE.
-	 *     - paged (bool) - Should archive pagination rules be added for the structure? Default is true.
-	 *     - feed (bool) - Should feed rewrite rules be added for the structure? Default is true.
-	 *     - forcomments (bool) - Should the feed rules be a query for a comments feed? Default is false.
-	 *     - walk_dirs (bool) - Should the 'directories' making up the structure be walked over and rewrite
-	 *                          rules built for each in turn? Default is true.
-	 *     - endpoints (bool) - Should endpoints be applied to the generated rewrite rules? Default is true.
-	 */
-	public function add_permastruct( $name, $struct, $args = array() ) {
-		// backwards compatibility for the old parameters: $with_front and $ep_mask
-		if ( ! is_array( $args ) )
-			$args = array( 'with_front' => $args );
-		if ( func_num_args() == 4 )
-			$args['ep_mask'] = func_get_arg( 3 );
-		$defaults = array(
-			'with_front' => true,
-			'ep_mask' => EP_NONE,
-			'paged' => true,
-			'feed' => true,
-			'forcomments' => false,
-			'walk_dirs' => true,
-			'endpoints' => true,
-		);
-		$args = array_intersect_key( $args, $defaults );
-		$args = wp_parse_args( $args, $defaults );
-		if ( $args['with_front'] )
-			$struct = $this->front . $struct;
-		else
-			$struct = $this->root . $struct;
-		$args['struct'] = $struct;
-		$this->extra_permastructs[ $name ] = $args;
-	}
-	/**
-	 * Remove rewrite rules and then recreate rewrite rules.
-	 *
-	 * Calls {@link WP_Rewrite::wp_rewrite_rules()} after removing the
-	 * 'rewrite_rules' option. If the function named 'save_mod_rewrite_rules'
-	 * exists, it will be called.
-	 *
-	 * @since 2.0.1
-	 * @access public
-	 * @param bool $hard Whether to update .htaccess (hard flush) or just update rewrite_rules option (soft flush). Default is true (hard).
-	 */
-	public function flush_rules( $hard = true ) {
-		static $do_hard_later;
-		// Prevent this action from running before everyone has registered their rewrites
-		if ( ! did_action( 'wp_loaded' ) ) {
-			add_action( 'wp_loaded', array( $this, 'flush_rules' ) );
-			$do_hard_later = ( isset( $do_hard_later ) ) ? $do_hard_later || $hard : $hard;
-			return;
-		}
-		if ( isset( $do_hard_later ) ) {
-			$hard = $do_hard_later;
-			unset( $do_hard_later );
-		}
-		delete_option('rewrite_rules');
-		$this->wp_rewrite_rules();
-		/**
-		 * Filter whether a "hard" rewrite rule flush should be performed when requested.
-		 *
-		 * A "hard" flush updates .htaccess (Apache) or web.config (IIS).
-		 *
-		 * @since 3.7.0
-		 *
-		 * @param bool $hard Whether to flush rewrite rules "hard". Default true.
-		 */
-		if ( ! $hard || ! apply_filters( 'flush_rewrite_rules_hard', true ) ) {
-			return;
-		}
-		if ( function_exists( 'save_mod_rewrite_rules' ) )
-			save_mod_rewrite_rules();
-		if ( function_exists( 'iis7_save_url_rewrite_rules' ) )
-			iis7_save_url_rewrite_rules();
-	}
-	/**
-	 * Sets up the object's properties.
-	 *
-	 * The 'use_verbose_page_rules' object property will be set to true if the
-	 * permalink structure begins with one of the following: '%postname%', '%category%',
-	 * '%tag%', or '%author%'.
-	 *
-	 * @since 1.5.0
-	 * @access public
-	 */
-	public function init() {
-		$this->extra_rules = $this->non_wp_rules = $this->endpoints = array();
-		$this->permalink_structure = get_option('permalink_structure');
-		$this->front = substr($this->permalink_structure, 0, strpos($this->permalink_structure, '%'));
-		$this->root = '';
-		if ( $this->using_index_permalinks() )
-			$this->root = $this->index . '/';
-		unset($this->author_structure);
-		unset($this->date_structure);
-		unset($this->page_structure);
-		unset($this->search_structure);
-		unset($this->feed_structure);
-		unset($this->comment_feed_structure);
-		$this->use_trailing_slashes = ( '/' == substr($this->permalink_structure, -1, 1) );
-		// Enable generic rules for pages if permalink structure doesn't begin with a wildcard.
-		if ( preg_match("/^[^%]*%(?:postname|category|tag|author)%/", $this->permalink_structure) )
-			 $this->use_verbose_page_rules = true;
-		else
-			$this->use_verbose_page_rules = false;
-	}
-	/**
-	 * Set the main permalink structure for the blog.
-	 *
-	 * Will update the 'permalink_structure' option, if there is a difference
-	 * between the current permalink structure and the parameter value. Calls
-	 * {@link WP_Rewrite::init()} after the option is updated.
-	 *
-	 * Fires the 'permalink_structure_changed' action once the init call has
-	 * processed passing the old and new values
-	 *
-	 * @since 1.5.0
-	 * @access public
-	 *
-	 * @param string $permalink_structure Permalink structure.
-	 */
-	public function set_permalink_structure($permalink_structure) {
-		if ( $permalink_structure != $this->permalink_structure ) {
-			$old_permalink_structure = $this->permalink_structure;
-			update_option('permalink_structure', $permalink_structure);
-			$this->init();
-			/**
-			 * Fires after the permalink structure is updated.
-			 *
-			 * @since 2.8.0
-			 *
-			 * @param string $old_permalink_structure The previous permalink structure.
-			 * @param string $permalink_structure     The new permalink structure.
-			 */
-			do_action( 'permalink_structure_changed', $old_permalink_structure, $permalink_structure );
-		}
-	}
-	/**
-	 * Set the category base for the category permalink.
-	 *
-	 * Will update the 'category_base' option, if there is a difference between
-	 * the current category base and the parameter value. Calls
-	 * {@link WP_Rewrite::init()} after the option is updated.
-	 *
-	 * @since 1.5.0
-	 * @access public
-	 *
-	 * @param string $category_base Category permalink structure base.
-	 */
-	public function set_category_base($category_base) {
-		if ( $category_base != get_option('category_base') ) {
-			update_option('category_base', $category_base);
-			$this->init();
-		}
-	}
-	/**
-	 * Set the tag base for the tag permalink.
-	 *
-	 * Will update the 'tag_base' option, if there is a difference between the
-	 * current tag base and the parameter value. Calls
-	 * {@link WP_Rewrite::init()} after the option is updated.
-	 *
-	 * @since 2.3.0
-	 * @access public
-	 *
-	 * @param string $tag_base Tag permalink structure base.
-	 */
-	public function set_tag_base( $tag_base ) {
-		if ( $tag_base != get_option( 'tag_base') ) {
-			update_option( 'tag_base', $tag_base );
-			$this->init();
-		}
-	}
-	/**
-	 * Constructor - Calls init(), which runs setup.
-	 *
-	 * @since 1.5.0
-	 * @access public
-	 *
-	 */
-	public function __construct() {
-		$this->init();
-	}
-}

changeset 7	cf61fcea0001
parent 5	5e2f62d02dcd
child 9	177826044cd9