eplaced 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 * * @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"; } /** * Retrieves 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 * * @global wpdb $wpdb WordPress database abstraction object. * * @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 ); } /** * Retrieves all of the rewrite rules for pages. * * @since 1.5.0 * * @return string[] Page rewrite rules. */ 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 ); } /** * Retrieves 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 * * @return string|false Date permalink structure on success, false on failure. */ 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; } /** * Retrieves 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 * * @return string|false Year permalink structure on success, false on failure. */ 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; } /** * Retrieves 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 * * @return string|false Year/Month permalink structure on success, false on failure. */ 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; } /** * Retrieves the day permalink structure with month and year. * * Keeps date permalink structure with all year, month, and day. * * @since 1.5.0 * * @return string|false Year/Month/Day permalink structure on success, false on failure. */ public function get_day_permastruct() { return $this->get_date_permastruct(); } /** * Retrieves 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 * * @return string|false Category permalink structure on success, false on failure. */ 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 * * @return string|false Tag permalink structure on success, false on failure. */ public function get_tag_permastruct() { return $this->get_extra_permastruct( 'post_tag' ); } /** * Retrieves an extra permalink structure by name. * * @since 2.5.0 * * @param string $name Permalink structure name. * @return string|false Permalink structure string on success, false on failure. */ 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; } /** * Retrieves 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 * * @return string|false Author permalink structure on success, false on failure. */ 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; } /** * Retrieves 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 * * @return string|false Search permalink structure on success, false on failure. */ 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; } /** * Retrieves 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 * * @return string|false Page permalink structure on success, false on failure. */ 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; } /** * Retrieves 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 * * @return string|false Feed permalink structure on success, false on failure. */ 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; } /** * Retrieves 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 * * @return string|false Comment feed permalink structure on success, false on failure. */ 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 $this->comment_feed_structure; } /** * Adds or updates existing rewrite tags (e.g. %postname%). * * If the tag already exists, replace the existing pattern and query for * that tag, otherwise add the new tag. * * @since 1.5.0 * * @see WP_Rewrite::$rewritecode * @see WP_Rewrite::$rewritereplace * @see WP_Rewrite::$queryreplace * * @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, true ); if ( false !== $position && null !== $position ) { $this->rewritereplace[ $position ] = $regex; $this->queryreplace[ $position ] = $query; } else { $this->rewritecode[] = $tag; $this->rewritereplace[] = $regex; $this->queryreplace[] = $query; } } /** * Removes an existing rewrite tag. * * @since 4.5.0 * * @see WP_Rewrite::$rewritecode * @see WP_Rewrite::$rewritereplace * @see WP_Rewrite::$queryreplace * * @param string $tag Name of the rewrite tag to remove. */ public function remove_rewrite_tag( $tag ) { $position = array_search( $tag, $this->rewritecode, true ); if ( false !== $position && null !== $position ) { unset( $this->rewritecode[ $position ] ); unset( $this->rewritereplace[ $position ] ); unset( $this->queryreplace[ $position ] ); } } /** * Generates 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 * * @param string $permalink_structure The permalink structure. * @param int $ep_mask Optional. Endpoint mask defining what endpoints are added to the structure. * Accepts a mask of: * - `EP_ALL` * - `EP_NONE` * - `EP_ALL_ARCHIVES` * - `EP_ATTACHMENT` * - `EP_AUTHORS` * - `EP_CATEGORIES` * - `EP_COMMENTS` * - `EP_DATE` * - `EP_DAY` * - `EP_MONTH` * - `EP_PAGES` * - `EP_PERMALINK` * - `EP_ROOT` * - `EP_SEARCH` * - `EP_TAGS` * - `EP_YEAR` * Default `EP_NONE`. * @param bool $paged Optional. Whether archive pagination rules should be added for the structure. * Default true. * @param bool $feed Optional Whether feed rewrite rules should be added for the structure. * Default true. * @param bool $forcomments Optional. Whether the feed rules should be a query for a comments feed. * Default false. * @param bool $walk_dirs Optional. Whether the 'directories' making up the structure should be walked * over and rewrite rules built for each in-turn. Default true. * @param bool $endpoints Optional. Whether endpoints should be applied to the generated rewrite rules. * Default true. * @return string[] Array of rewrite rules keyed by their regex pattern. */ 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 /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 = $this->pagination_base . '/?([0-9]{1,})/?$'; $commentregex = $this->comments_pagination_base . '-([0-9]{1,})/?$'; $embedregex = 'embed/?$'; // 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; $embedindex = $index; /* * Build a list from the rewritecode and queryreplace arrays, that will look something * like tagname=$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 ); // Create query and regex for embeds. $embedmatch = $match . $embedregex; $embedquery = $embedindex . '?' . $query . '&embed=true'; // 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(); // ...adding on /feed/ regexes => queries. if ( $feed ) { $rewrite = array( $feedmatch => $feedquery, $feedmatch2 => $feedquery2, $embedmatch => $embedquery, ); } // ...and /page/xx ones. if ( $paged ) { $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; // This is for page style attachment URLs. $page = is_post_type_hierarchical( $ptype ); break; } } } // If 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'; // Create query and regex for embeds. $embedmatch = $match . $embedregex; $embedquery = $embedindex . '?' . $query . '&embed=true'; // 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 . '/([^/]+)/'; // Add trackback regex /trackback/... $sub1tb = $sub1 . $trackbackregex; // And /feed/(atom|...) $sub1feed = $sub1 . $feedregex; // And /(feed|atom...) $sub1feed2 = $sub1 . $feedregex2; // And /comment-page-xx $sub1comment = $sub1 . $commentregex; // And /embed/... $sub1embed = $sub1 . $embedregex; /* * Add another rule to match attachments in the explicit form: * /attachment/some-text */ $sub2 = $submatchbase . '/attachment/([^/]+)/'; // And add trackbacks /attachment/trackback. $sub2tb = $sub2 . $trackbackregex; // Feeds, /attachment/feed/(atom|...) $sub2feed = $sub2 . $feedregex; // And feeds again on to this /attachment/(feed|atom...) $sub2feed2 = $sub2 . $feedregex2; // And /comment-page-xx $sub2comment = $sub2 . $commentregex; // And /embed/... $sub2embed = $sub2 . $embedregex; // 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 ); $subembedquery = $subquery . '&embed=true'; // 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. /2/ * Previously: '(/[0-9]+)?/?$', which produced '/2' for page. * When cast to int, returned 0. */ $match = $match . '(?:/([0-9]+))?/?$'; $query = $index . '?' . $query . '&page=' . $this->preg_index( $num_toks + 1 ); // Not matching a permalink so this is a lot simpler. } else { // 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 embed. $rewrite = array_merge( array( $embedmatch => $embedquery ), $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, $sub1embed => $subembedquery, ) ); } $rewrite = array_merge( array( $sub2 => $subquery, $sub2tb => $subtbquery, $sub2feed => $subfeedquery, $sub2feed2 => $subfeedquery, $sub2comment => $subcommentquery, $sub2embed => $subembedquery, ), $rewrite ); } } // Add the rules for this dir to the accumulating $post_rewrite. $post_rewrite = array_merge( $rewrite, $post_rewrite ); } // The finished rules. phew! return $post_rewrite; } /** * Generates rewrite rules with permalink structure and walking directory only. * * Shorten version of WP_Rewrite::generate_rewrite_rules() that allows for shorter * list of parameters. See the method for longer description of what generating * rewrite rules does. * * @since 1.5.0 * * @see WP_Rewrite::generate_rewrite_rules() See for long description and rest of parameters. * * @param string $permalink_structure The permalink structure to generate rules. * @param bool $walk_dirs Optional. Whether to create list of directories to walk over. * Default false. * @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 ); } /** * Constructs rewrite matches and queries from permalink structure. * * Runs the action {@see '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 {@see 'rewrite_rules_array'} * filter on the full rewrite rule array. * * There are two ways to manipulate the rewrite rules, one by hooking into * the {@see '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 * * @return string[] An associative 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(); // favicon.ico -- only if installed at the root. $favicon_rewrite = ( empty( $home_path['path'] ) || '/' === $home_path['path'] ) ? array( 'favicon\.ico$' => $this->index . '?favicon=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'; } // Deprecated. $registration_pages['.*wp-register.php$'] = $this->index . '?register=true'; // Post rewrite rules. $post_rewrite = $this->generate_rewrite_rules( $this->permalink_structure, EP_PERMALINK ); /** * Filters rewrite rules used for "post" archives. * * @since 1.5.0 * * @param string[] $post_rewrite Array of rewrite rules for posts, keyed by their regex pattern. */ $post_rewrite = apply_filters( 'post_rewrite_rules', $post_rewrite ); // Date rewrite rules. $date_rewrite = $this->generate_rewrite_rules( $this->get_date_permastruct(), EP_DATE ); /** * Filters rewrite rules used for date archives. * * Likely date archives would include /yyyy/, /yyyy/mm/, and /yyyy/mm/dd/. * * @since 1.5.0 * * @param string[] $date_rewrite Array of rewrite rules for date archives, keyed by their regex pattern. */ $date_rewrite = apply_filters( 'date_rewrite_rules', $date_rewrite ); // Root-level rewrite rules. $root_rewrite = $this->generate_rewrite_rules( $this->root . '/', EP_ROOT ); /** * Filters 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 string[] $root_rewrite Array of root-level rewrite rules, keyed by their regex pattern. */ $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 ); /** * Filters rewrite rules used for comment feed archives. * * Likely comments feed archives include /comments/feed/, and /comments/feed/atom/. * * @since 1.5.0 * * @param string[] $comments_rewrite Array of rewrite rules for the site-wide comments feeds, keyed by their regex pattern. */ $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 ); /** * Filters 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 string[] $search_rewrite Array of rewrite rules for search queries, keyed by their regex pattern. */ $search_rewrite = apply_filters( 'search_rewrite_rules', $search_rewrite ); // Author rewrite rules. $author_rewrite = $this->generate_rewrite_rules( $this->get_author_permastruct(), EP_AUTHORS ); /** * Filters 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 string[] $author_rewrite Array of rewrite rules for author archives, keyed by their regex pattern. */ $author_rewrite = apply_filters( 'author_rewrite_rules', $author_rewrite ); // Pages rewrite rules. $page_rewrite = $this->page_rewrite_rules(); /** * Filters rewrite rules used for "page" post type archives. * * @since 1.5.0 * * @param string[] $page_rewrite Array of rewrite rules for the "page" post type, keyed by their regex pattern. */ $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( $struct ); } /** * Filters rewrite rules used for individual permastructs. * * The dynamic portion of the hook name, `$permastructname`, refers * to the name of the registered permastruct, e.g. 'post_tag' (tags), * 'category' (categories), etc. * * @since 3.1.0 * * @param string[] $rules Array of rewrite rules generated for the current permastruct, keyed by their regex pattern. */ $rules = apply_filters( "{$permastructname}_rewrite_rules", $rules ); if ( 'post_tag' === $permastructname ) { /** * Filters rewrite rules used specifically for Tags. * * @since 2.3.0 * @deprecated 3.1.0 Use {@see 'post_tag_rewrite_rules'} instead. * * @param string[] $rules Array of rewrite rules generated for tags, keyed by their regex pattern. */ $rules = apply_filters_deprecated( 'tag_rewrite_rules', array( $rules ), '3.1.0', 'post_tag_rewrite_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, $favicon_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, $favicon_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 ) ); /** * Filters the full set of generated rewrite rules. * * @since 1.5.0 * * @param string[] $rules The compiled array of rewrite rules, keyed by their regex pattern. */ $this->rules = apply_filters( 'rewrite_rules_array', $this->rules ); return $this->rules; } /** * Retrieves the rewrite rules. * * The difference between this method and 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 * * @return string[] Array of rewrite rules keyed by their regex pattern. */ public function wp_rewrite_rules() { $this->rules = get_option( 'rewrite_rules' ); if ( empty( $this->rules ) ) { $this->matches = 'matches'; $this->rewrite_rules(); if ( ! did_action( 'wp_loaded' ) ) { add_action( 'wp_loaded', array( $this, 'flush_rules' ) ); return $this->rules; } update_option( 'rewrite_rules', $this->rules ); } return $this->rules; } /** * Retrieves 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 * * @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 = "\n"; $rules .= "RewriteEngine On\n"; $rules .= "RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]\n"; $rules .= "RewriteBase $home_root\n"; // Prevent -f checks on index.php. $rules .= "RewriteRule ^index\.php$ - [L]\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 ); $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 ( 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"; /** * Filters 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 ); /** * Filters the list of rewrite rules formatted for output to an .htaccess file. * * @since 1.5.0 * @deprecated 1.5.0 Use the {@see 'mod_rewrite_rules'} filter instead. * * @param string $rules mod_rewrite Rewrite rules formatted for .htaccess. */ return apply_filters_deprecated( 'rewrite_rules', array( $rules ), '1.5.0', 'mod_rewrite_rules' ); } /** * Retrieves 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 * * @param bool $add_parent_tags Optional. Whether to add parent tags to the rewrite rule sets. * Default false. * @return string IIS7 URL rewrite rule sets. */ public function iis7_url_rewrite_rules( $add_parent_tags = false ) { if ( ! $this->using_permalinks() ) { return ''; } $rules = ''; if ( $add_parent_tags ) { $rules .= ' '; } $rules .= ' '; if ( $add_parent_tags ) { $rules .= ' '; } /** * Filters 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. */ return apply_filters( 'iis7_url_rewrite_rules', $rules ); } /** * 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. * * @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'. */ public function add_rule( $regex, $query, $after = 'bottom' ) { if ( is_array( $query ) ) { $external = false; $query = add_query_arg( $query, 'index.php' ); } else { $index = false === strpos( $query, '?' ) ? strlen( $query ) : strpos( $query, '?' ); $front = substr( $query, 0, $index ); $external = $front != $this->index; } // "external" = it doesn't correspond to index.php. if ( $external ) { $this->add_external_rule( $regex, $query ); } else { if ( 'bottom' === $after ) { $this->extra_rules = array_merge( $this->extra_rules, array( $regex => $query ) ); } else { $this->extra_rules_top = array_merge( $this->extra_rules_top, array( $regex => $query ) ); } } } /** * Adds a rewrite rule that doesn't correspond to index.php. * * @since 2.1.0 * * @param string $regex Regular expression to match request against. * @param string $query The corresponding query vars for this rewrite rule. */ public function add_external_rule( $regex, $query ) { $this->non_wp_rules[ $regex ] = $query; } /** * Adds an endpoint, like /trackback/. * * @since 2.1.0 * @since 3.9.0 $query_var parameter added. * @since 4.3.0 Added support for skipping query var registration by passing `false` to `$query_var`. * * @see add_rewrite_endpoint() for full documentation. * @global WP $wp Current WordPress environment instance. * * @param string $name Name of the endpoint. * @param int $places Endpoint mask describing the places the endpoint should be added. * Accepts a mask of: * - `EP_ALL` * - `EP_NONE` * - `EP_ALL_ARCHIVES` * - `EP_ATTACHMENT` * - `EP_AUTHORS` * - `EP_CATEGORIES` * - `EP_COMMENTS` * - `EP_DATE` * - `EP_DAY` * - `EP_MONTH` * - `EP_PAGES` * - `EP_PERMALINK` * - `EP_ROOT` * - `EP_SEARCH` * - `EP_TAGS` * - `EP_YEAR` * @param string|bool $query_var Optional. Name of the corresponding query variable. Pass `false` to * skip registering a query_var for this endpoint. Defaults to the * value of `$name`. */ public function add_endpoint( $name, $places, $query_var = true ) { global $wp; // For backward compatibility, if null has explicitly been passed as `$query_var`, assume `true`. if ( true === $query_var || null === $query_var ) { $query_var = $name; } $this->endpoints[] = array( $places, $name, $query_var ); if ( $query_var ) { $wp->add_query_var( $query_var ); } } /** * Adds a new permalink structure. * * A permalink structure (permastruct) is an abstract definition of a set of rewrite rules; * it is an easy way of expressing a set of regular expressions that rewrite to a set of * query strings. The new permastruct is added to the WP_Rewrite::$extra_permastructs array. * * When the rewrite rules are built by WP_Rewrite::rewrite_rules(), all of these extra * permastructs are passed to 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 WP_Rewrite::generate_rewrite_rules() * works on the new permastruct. * * @since 2.5.0 * * @param string $name Name for permalink structure. * @param string $struct Permalink structure (e.g. category/%category%) * @param array $args { * Optional. Arguments for building rewrite rules based on the permalink structure. * Default empty array. * * @type bool $with_front Whether the structure should be prepended with `WP_Rewrite::$front`. * Default true. * @type int $ep_mask The endpoint mask defining which endpoints are added to the structure. * Accepts a mask of: * - `EP_ALL` * - `EP_NONE` * - `EP_ALL_ARCHIVES` * - `EP_ATTACHMENT` * - `EP_AUTHORS` * - `EP_CATEGORIES` * - `EP_COMMENTS` * - `EP_DATE` * - `EP_DAY` * - `EP_MONTH` * - `EP_PAGES` * - `EP_PERMALINK` * - `EP_ROOT` * - `EP_SEARCH` * - `EP_TAGS` * - `EP_YEAR` * Default `EP_NONE`. * @type bool $paged Whether archive pagination rules should be added for the structure. * Default true. * @type bool $feed Whether feed rewrite rules should be added for the structure. Default true. * @type bool $forcomments Whether the feed rules should be a query for a comments feed. Default false. * @type bool $walk_dirs Whether the 'directories' making up the structure should be walked over * and rewrite rules built for each in-turn. Default true. * @type bool $endpoints Whether endpoints should be applied to the generated rules. Default true. * } */ public function add_permastruct( $name, $struct, $args = array() ) { // 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 ); } $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; } /** * Removes a permalink structure. * * @since 4.5.0 * * @param string $name Name for permalink structure. */ public function remove_permastruct( $name ) { unset( $this->extra_permastructs[ $name ] ); } /** * Removes rewrite rules and then recreate rewrite rules. * * Calls 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 * * @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 = null; // 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 ); } update_option( 'rewrite_rules', '' ); $this->wp_rewrite_rules(); /** * Filters 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 */ public function init() { $this->extra_rules = array(); $this->non_wp_rules = array(); $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; } } /** * Sets the main permalink structure for the site. * * Will update the 'permalink_structure' option, if there is a difference * between the current permalink structure and the parameter value. Calls * WP_Rewrite::init() after the option is updated. * * Fires the {@see 'permalink_structure_changed'} action once the init call has * processed passing the old and new values * * @since 1.5.0 * * @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 ); } } /** * Sets 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 WP_Rewrite::init() * after the option is updated. * * @since 1.5.0 * * @param string $category_base Category permalink structure base. */ public function set_category_base( $category_base ) { if ( get_option( 'category_base' ) !== $category_base ) { update_option( 'category_base', $category_base ); $this->init(); } } /** * Sets 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 WP_Rewrite::init() after * the option is updated. * * @since 2.3.0 * * @param string $tag_base Tag permalink structure base. */ public function set_tag_base( $tag_base ) { if ( get_option( 'tag_base' ) !== $tag_base ) { update_option( 'tag_base', $tag_base ); $this->init(); } } /** * Constructor - Calls init(), which runs setup. * * @since 1.5.0 */ public function __construct() { $this->init(); } }