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 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; } /** * 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); //pseudo-places /** * Endpoint Mask for default, which is nothing. * * @since 2.1.0 */ define('EP_NONE', 0); /** * 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/". * * @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 * @author Mark Jaquith * * @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; // $url cleanup by Mark Jaquith // This fixes things like #anchors, ?query=strings, missing 'www.', // added 'www.', or added 'index.php/' that will mess up our WP_Query // and return a false negative // Get rid of the #anchor $url_split = explode('#', $url); $url = $url_split[0]; // Get rid of URL ?query=string $url_split = explode('?', $url); $url = $url_split[0]; // Add 'www.' if it is absent and should be there if ( false !== strpos(get_option('home'), '://www.') && false === strpos($url, '://www.') ) $url = str_replace('://', '://www.', $url); // Strip 'www.' if it is present and shouldn't be if ( false === strpos(get_option('home'), '://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, get_option('home')) ) { // Chop off http://domain.com $url = str_replace(get_option('home'), '', $url); } else { // Chop off /path/to/blog $home_path = parse_url(get_option('home')); $home_path = $home_path['path']; $url = str_replace($home_path, '', $url); } // Trim leading and lagging slashes $url = trim($url, '/'); $request = $url; // Done with cleanup // Look for matches. $request_match = $request; foreach ($rewrite as $match => $query) { // If the requesting file is the anchor of the match, prepend it // to the path info. if ( (! empty($url)) && (strpos($match, $url) === 0) && ($url != $request)) { $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("!^.+\?!", '', $query); // Substitute the substring matches into the query. eval("\$query = \"" . addslashes($query) . "\";"); // 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 ( $query->is_single || $query->is_page ) 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; /** * Customized or default category permalink base ( example.com/xx/tagname ). * * @since 1.5.0 * @access private * @var string */ var $category_base; /** * Customized or default tag permalink base ( example.com/xx/tagname ). * * @since 2.3.0 * @access private * @var string */ var $tag_base; /** * Permalink request structure for categories. * * @since 1.5.0 * @access private * @var string */ var $category_structure; /** * Permalink request structure for tags. * * @since 2.3.0 * @access private * @var string */ var $tag_structure; /** * 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'; /** * 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 unknown * @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 $rewritecode = array( '%year%', '%monthnum%', '%day%', '%hour%', '%minute%', '%second%', '%postname%', '%post_id%', '%category%', '%tag%', '%author%', '%pagename%', '%search%' ); /** * Preg_replace values for the search, see {@link WP_Rewrite::$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=', 'category_name=', 'tag=', 'author_name=', 'pagename=', 's=' ); /** * Supported default feeds. * * @since 1.5.0 * @access private * @var array */ var $feeds = array ( 'feed', 'rdf', 'rss', 'rss2', 'atom' ); /** * Whether permalinks are being used. * * This can be either rewrite module or permalink in the HTTP query string. * * @since 1.5.0 * @access public * * @return bool True, if permalinks are enabled. */ function using_permalinks() { if (empty($this->permalink_structure)) return false; else return true; } /** * 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'")); //now reverse it, because we need parents after children for rewrite rules to work properly $posts = array_reverse($posts, true); $page_uris = array(); $page_attachment_uris = array(); if ( !$posts ) return array( array(), 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 ( $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 $token) { if ( ($token == '%post_id%') && ($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() { if (isset($this->category_structure)) { return $this->category_structure; } if (empty($this->permalink_structure)) { $this->category_structure = ''; return false; } if (empty($this->category_base)) $this->category_structure = trailingslashit( $this->front . 'category' ); else $this->category_structure = trailingslashit( '/' . $this->root . $this->category_base ); $this->category_structure .= '%category%'; return $this->category_structure; } /** * Retrieve the permalink structure for tags. * * If the tag_base property has no value, then the tag structure will have * the front property value, followed by 'tag', and finally '%tag%'. If it * does, then the root property will be used, along with the tag_base * property value. * * @since 2.3.0 * @access public * * @return bool|string False on failure. Tag permalink structure. */ function get_tag_permastruct() { if (isset($this->tag_structure)) { return $this->tag_structure; } if (empty($this->permalink_structure)) { $this->tag_structure = ''; return false; } if (empty($this->tag_base)) $this->tag_structure = trailingslashit( $this->front . 'tag' ); else $this->tag_structure = trailingslashit( '/' . $this->root . $this->tag_base ); $this->tag_structure .= '%tag%'; return $this->tag_structure; } /** * Retrieve extra permalink structure by name. * * @since unknown * @access public * * @param string $name Permalink structure name. * @return string|bool False if not found. Permalink structure string. */ function get_extra_permastruct($name) { if ( isset($this->extra_permastructs[$name]) ) return $this->extra_permastructs[$name]; 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 /feed/atom //and /atom are both possible $feedregex = $this->feed_base . '/' . $feedregex2; //build a regex to match the trackback and page/xx parts of URLs $trackbackregex = 'trackback/?$'; $pageregex = 'page/?([0-9]{1,})/?$'; $commentregex = 'comment-page-([0-9]{1,})/?$'; //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, '/'); if ($walk_dirs) { $dirs = explode('/', $structure); } else { $dirs[] = $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; } //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); //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 || EP_NONE & $ep_mask ) $rewrite = array_merge($rewrite, array($commentmatch => $commentquery)); //do endpoints if ($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) $page = true; } //if we're creating rules for a permalink, do all the endpoints like attachments etc if ($post) { $post = true; //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 /some-text $sub1 = $submatchbase . '/([^/]+)/'; $sub1tb = $sub1 . $trackbackregex; //add trackback regex /trackback/... $sub1feed = $sub1 . $feedregex; //and /feed/(atom|...) $sub1feed2 = $sub1 . $feedregex2; //and /(feed|atom...) $sub1comment = $sub1 . $commentregex; //and /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: ///attachment/some-text $sub2 = $submatchbase . '/attachment/([^/]+)/'; $sub2tb = $sub2 . $trackbackregex; //and add trackbacks /attachment/trackback $sub2feed = $sub2 . $feedregex; //feeds, /attachment/feed/(atom|...) $sub2feed2 = $sub2 . $feedregex2; //and feeds again on to this /attachment/(feed|atom...) $sub2comment = $sub2 . $commentregex; //and /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=' . $this->preg_index(2); //do endpoints for attachments if ( !empty($endpoint) ) { 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 /2 for /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 /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 $robots_rewrite = array('robots.txt$' => $this->index . '?robots=1'); //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'); // 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); // Categories $category_rewrite = $this->generate_rewrite_rules($this->get_category_permastruct(), EP_CATEGORIES); $category_rewrite = apply_filters('category_rewrite_rules', $category_rewrite); // Tags $tag_rewrite = $this->generate_rewrite_rules($this->get_tag_permastruct(), EP_TAGS); $tag_rewrite = apply_filters('tag_rewrite_rules', $tag_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 $permastruct ) $this->extra_rules_top = array_merge($this->extra_rules_top, $this->generate_rewrite_rules($permastruct, EP_NONE)); // Put them together. if ( $this->use_verbose_page_rules ) $this->rules = array_merge($this->extra_rules_top, $robots_rewrite, $default_feeds, $page_rewrite, $root_rewrite, $comments_rewrite, $search_rewrite, $category_rewrite, $tag_rewrite, $author_rewrite, $date_rewrite, $post_rewrite, $this->extra_rules); else $this->rules = array_merge($this->extra_rules_top, $robots_rewrite, $default_feeds, $root_rewrite, $comments_rewrite, $search_rewrite, $category_rewrite, $tag_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')); $site_root = trailingslashit($site_root['path']); $home_root = parse_url(get_option('home')); $home_root = trailingslashit($home_root['path']); $rules = "\n"; $rules .= "RewriteEngine On\n"; $rules .= "RewriteBase $home_root\n"; //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 .= "\n"; $rules = apply_filters('mod_rewrite_rules', $rules); $rules = apply_filters('rewrite_rules', $rules); // Deprecated 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 $after Optional, default is bottom. Location to place rule. */ function add_rule($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 $redirect URL regex redirects to when regex matches request. */ function add_external_rule($regex, $redirect) { $this->non_wp_rules[$regex] = $redirect; } /** * Add an endpoint, like /trackback/. * * To be inserted after certain URL types (specified in $places). * * @since 2.1.0 * @access public * * @param string $name Name of endpoint. * @param array $places URL types that endpoint can be used. */ function add_endpoint($name, $places) { global $wp; $this->endpoints[] = array ( $places, $name ); $wp->add_query_var($name); } /** * Add permalink structure. * * These are added along with the extra rewrite rules that are merged to the * top. * * @since unknown * @access public * * @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) { if ( $with_front ) $struct = $this->front . $struct; $this->extra_permastructs[$name] = $struct; } /** * 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 */ function flush_rules() { delete_option('rewrite_rules'); $this->wp_rewrite_rules(); if ( function_exists('save_mod_rewrite_rules') ) save_mod_rewrite_rules(); } /** * Sets up the object's properties. * * The 'use_verbose_page_rules' object property will be turned on, if the * permalink structure includes the following: '%postname%', '%category%', * '%tag%', or '%author%'. * * @since 1.5.0 * @access 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 . '/'; } $this->category_base = get_option( 'category_base' ); $this->tag_base = get_option( 'tag_base' ); unset($this->category_structure); 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) == '/' ) ? true : false; // Enable generic rules for pages if permalink structure doesn't begin with a wildcard. $structure = ltrim($this->permalink_structure, '/'); if ( $this->using_index_permalinks() ) $structure = ltrim($this->permalink_structure, $this->index . '/'); if ( 0 === strpos($structure, '%postname%') || 0 === strpos($structure, '%category%') || 0 === strpos($structure, '%tag%') || 0 === strpos($structure, '%author%') ) $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. * * @since 1.5.0 * @access public * * @param string $permalink_structure Permalink structure. */ function set_permalink_structure($permalink_structure) { if ($permalink_structure != $this->permalink_structure) { update_option('permalink_structure', $permalink_structure); $this->init(); } } /** * 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 $category_base Category permalink structure base. */ function set_category_base($category_base) { if ($category_base != $this->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. */ function set_tag_base( $tag_base ) { if ( $tag_base != $this->tag_base ) { update_option( 'tag_base', $tag_base ); $this->init(); } } /** * PHP4 Constructor - Calls init(), which runs setup. * * @since 1.5.0 * @access public * * @return WP_Rewrite */ function WP_Rewrite() { $this->init(); } } ?>