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WordPress/wp-includes/class-wp-rewrite.php

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<?php
/**
* Rewrite API: WP_Rewrite class
*
* @package WordPress
* @subpackage Rewrite
* @since 1.5.0
*/
/**
* Core class used to implement a rewrite component API.
*
* The WordPress Rewrite class writes the rewrite module rules to the .htaccess
* file. It also handles parsing the request to get the correct setup for the
* WordPress Query class.
*
* The Rewrite along with WP class function as a front controller for WordPress.
* You can add rules to trigger your page view and processing using this
* component. The full functionality of a front controller does not exist,
* meaning you can't define how the template files load based on the rewrite
* rules.
*
* @since 1.5.0
*/
class WP_Rewrite {
/**
* Permalink structure for posts.
*
* @since 1.5.0
* @var string
*/
public $permalink_structure;
/**
* Whether to add trailing slashes.
*
* @since 2.2.0
* @var bool
*/
public $use_trailing_slashes;
/**
* Base for the author permalink structure (example.com/$author_base/authorname).
*
* @since 1.5.0
* @access private
* @var string
*/
var $author_base = 'author';
/**
* Permalink structure for author archives.
*
* @since 1.5.0
* @access private
* @var string
*/
var $author_structure;
/**
* Permalink structure for date archives.
*
* @since 1.5.0
* @access private
* @var string
*/
var $date_structure;
/**
* Permalink structure for pages.
*
* @since 1.5.0
* @access private
* @var string
*/
var $page_structure;
/**
* Base of the search permalink structure (example.com/$search_base/query).
*
* @since 1.5.0
* @access private
* @var string
*/
var $search_base = 'search';
/**
* Permalink structure for searches.
*
* @since 1.5.0
* @access private
* @var string
*/
var $search_structure;
/**
* Comments permalink base.
*
* @since 1.5.0
* @access private
* @var string
*/
var $comments_base = 'comments';
/**
* Pagination permalink base.
*
* @since 3.1.0
* @var string
*/
public $pagination_base = 'page';
/**
* Comments pagination permalink base.
*
* @since 4.2.0
* @access private
* @var string
*/
var $comments_pagination_base = 'comment-page';
/**
* Feed permalink base.
*
* @since 1.5.0
* @access private
* @var string
*/
var $feed_base = 'feed';
/**
* Comments feed permalink structure.
*
* @since 1.5.0
* @access private
* @var string
*/
var $comment_feed_structure;
/**
* Feed request permalink structure.
*
* @since 1.5.0
* @access private
* @var string
*/
var $feed_structure;
/**
* The static portion of the post permalink structure.
*
* If the permalink structure is "/archive/%post_id%" then the front
* is "/archive/". If the permalink structure is "/%year%/%postname%/"
* then the front is "/".
*
* @see WP_Rewrite::init()
* @since 1.5.0
* @var string
*/
public $front;
/**
* The prefix for all permalink structures.
*
* If PATHINFO/index permalinks are in use then the root is the value of
* `WP_Rewrite::$index` with a trailing slash appended. Otherwise the root
* will be empty.
*
* @see WP_Rewrite::init()
* @see WP_Rewrite::using_index_permalinks()
* @since 1.5.0
* @var string
*/
public $root = '';
/**
* The name of the index file which is the entry point to all requests.
*
* @since 1.5.0
* @access public
* @var string
*/
public $index = 'index.php';
/**
* Variable name to use for regex matches in the rewritten query.
*
* @since 1.5.0
* @access private
* @var string
*/
var $matches = '';
/**
* Rewrite rules to match against the request to find the redirect or query.
*
* @since 1.5.0
* @access private
* @var array
*/
var $rules;
/**
* Additional rules added external to the rewrite class.
*
* Those not generated by the class, see add_rewrite_rule().
*
* @since 2.1.0
* @access private
* @var array
*/
var $extra_rules = array();
/**
* Additional rules that belong at the beginning to match first.
*
* Those not generated by the class, see add_rewrite_rule().
*
* @since 2.3.0
* @access private
* @var array
*/
var $extra_rules_top = array();
/**
* Rules that don't redirect to WordPress' index.php.
*
* These rules are written to the mod_rewrite portion of the .htaccess,
* and are added by add_external_rule().
*
* @since 2.1.0
* @access private
* @var array
*/
var $non_wp_rules = array();
/**
* Extra permalink structures, e.g. categories, added by add_permastruct().
*
* @since 2.1.0
* @access private
* @var array
*/
var $extra_permastructs = array();
/**
* Endpoints (like /trackback/) added by add_rewrite_endpoint().
*
* @since 2.1.0
* @access private
* @var array
*/
var $endpoints;
/**
* Whether to write every mod_rewrite rule for WordPress into the .htaccess file.
*
* This is off by default, turning it on might print a lot of rewrite rules
* to the .htaccess file.
*
* @see WP_Rewrite::mod_rewrite_rules()
* @since 2.0.0
* @access public
* @var bool
*/
public $use_verbose_rules = false;
/**
* Could post permalinks be confused with those of pages?
*
* If the first rewrite tag in the post permalink structure is one that could
* also match a page name (e.g. %postname% or %author%) then this flag is
* set to true. Prior to WordPress 3.3 this flag indicated that every page
* would have a set of rules added to the top of the rewrite rules array.
* Now it tells WP::parse_request() to check if a URL matching the page
* permastruct is actually a page before accepting it.
*
* @since 2.5.0
* @access public
* @var bool
*
* @see WP_Rewrite::init()
*/
public $use_verbose_page_rules = true;
/**
* Rewrite tags that can be used in permalink structures.
*
* These are translated into the regular expressions stored in
* `WP_Rewrite::$rewritereplace` and are rewritten to the query
* variables listed in WP_Rewrite::$queryreplace.
*
* Additional tags can be added with add_rewrite_tag().
*
* @since 1.5.0
* @access private
* @var array
*/
var $rewritecode = array(
'%year%',
'%monthnum%',
'%day%',
'%hour%',
'%minute%',
'%second%',
'%postname%',
'%post_id%',
'%author%',
'%pagename%',
'%search%'
);
/**
* Regular expressions to be substituted into rewrite rules in place
* of rewrite tags, see WP_Rewrite::$rewritecode.
*
* @since 1.5.0
* @access private
* @var array
*/
var $rewritereplace = array(
'([0-9]{4})',
'([0-9]{1,2})',
'([0-9]{1,2})',
'([0-9]{1,2})',
'([0-9]{1,2})',
'([0-9]{1,2})',
'([^/]+)',
'([0-9]+)',
'([^/]+)',
'([^/]+?)',
'(.+)'
);
/**
* Query variables that rewrite tags map to, see WP_Rewrite::$rewritecode.
*
* @since 1.5.0
* @access private
* @var array
*/
var $queryreplace = array(
'year=',
'monthnum=',
'day=',
'hour=',
'minute=',
'second=',
'name=',
'p=',
'author_name=',
'pagename=',
's='
);
/**
* Supported default feeds.
*
* @since 1.5.0
* @var array
*/
public $feeds = array( 'feed', 'rdf', 'rss', 'rss2', 'atom' );
/**
* Whether permalinks are being used.
*
* This can be either rewrite module or permalink in the HTTP query string.
*
* @since 1.5.0
* @access public
*
* @return bool True, if permalinks are enabled.
*/
public function using_permalinks() {
return ! empty($this->permalink_structure);
}
/**
* Whether permalinks are being used and rewrite module is not enabled.
*
* Means that permalink links are enabled and index.php is in the URL.
*
* @since 1.5.0
* @access public
*
* @return bool
*/
public function using_index_permalinks() {
if ( empty( $this->permalink_structure ) ) {
return false;
}
// If the index is not in the permalink, we're using mod_rewrite.
return preg_match( '#^/*' . $this->index . '#', $this->permalink_structure );
}
/**
* Whether permalinks are being used and rewrite module is enabled.
*
* Using permalinks and index.php is not in the URL.
*
* @since 1.5.0
* @access public
*
* @return bool
*/
public function using_mod_rewrite_permalinks() {
return $this->using_permalinks() && ! $this->using_index_permalinks();
}
/**
* Index for matches for usage in preg_*() functions.
*
* The format of the string is, with empty matches property value, '$NUM'.
* The 'NUM' will be replaced with the value in the $number parameter. With
* the matches property not empty, the value of the returned string will
* contain that value of the matches property. The format then will be
* '$MATCHES[NUM]', with MATCHES as the value in the property and NUM the
* value of the $number parameter.
*
* @since 1.5.0
* @access public
*
* @param int $number Index number.
* @return string
*/
public function preg_index($number) {
$match_prefix = '$';
$match_suffix = '';
if ( ! empty($this->matches) ) {
$match_prefix = '$' . $this->matches . '[';
$match_suffix = ']';
}
return "$match_prefix$number$match_suffix";
}
/**
* Retrieve all page and attachments for pages URIs.
*
* The attachments are for those that have pages as parents and will be
* retrieved.
*
* @since 2.5.0
* @access public
*
* @global wpdb $wpdb
*
* @return array Array of page URIs as first element and attachment URIs as second element.
*/
public function page_uri_index() {
global $wpdb;
//get pages in order of hierarchy, i.e. children after parents
$pages = $wpdb->get_results("SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE post_type = 'page' AND post_status != 'auto-draft'");
$posts = get_page_hierarchy( $pages );
// If we have no pages get out quick
if ( !$posts )
return array( array(), array() );
//now reverse it, because we need parents after children for rewrite rules to work properly
$posts = array_reverse($posts, true);
$page_uris = array();
$page_attachment_uris = array();
foreach ( $posts as $id => $post ) {
// URL => page name
$uri = get_page_uri($id);
$attachments = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE post_type = 'attachment' AND post_parent = %d", $id ));
if ( !empty($attachments) ) {
foreach ( $attachments as $attachment ) {
$attach_uri = get_page_uri($attachment->ID);
$page_attachment_uris[$attach_uri] = $attachment->ID;
}
}
$page_uris[$uri] = $id;
}
return array( $page_uris, $page_attachment_uris );
}
/**
* Retrieve all of the rewrite rules for pages.
*
* @since 1.5.0
* @access public
*
* @return array
*/
public function page_rewrite_rules() {
// the extra .? at the beginning prevents clashes with other regular expressions in the rules array
$this->add_rewrite_tag( '%pagename%', '(.?.+?)', 'pagename=' );
return $this->generate_rewrite_rules( $this->get_page_permastruct(), EP_PAGES, true, true, false, false );
}
/**
* Retrieve date permalink structure, with year, month, and day.
*
* The permalink structure for the date, if not set already depends on the
* permalink structure. It can be one of three formats. The first is year,
* month, day; the second is day, month, year; and the last format is month,
* day, year. These are matched against the permalink structure for which
* one is used. If none matches, then the default will be used, which is
* year, month, day.
*
* Prevents post ID and date permalinks from overlapping. In the case of
* post_id, the date permalink will be prepended with front permalink with
* 'date/' before the actual permalink to form the complete date permalink
* structure.
*
* @since 1.5.0
* @access public
*
* @return string|false False on no permalink structure. Date permalink structure.
*/
public function get_date_permastruct() {
if ( isset($this->date_structure) )
return $this->date_structure;
if ( empty($this->permalink_structure) ) {
$this->date_structure = '';
return false;
}
// The date permalink must have year, month, and day separated by slashes.
$endians = array('%year%/%monthnum%/%day%', '%day%/%monthnum%/%year%', '%monthnum%/%day%/%year%');
$this->date_structure = '';
$date_endian = '';
foreach ( $endians as $endian ) {
if ( false !== strpos($this->permalink_structure, $endian) ) {
$date_endian= $endian;
break;
}
}
if ( empty($date_endian) )
$date_endian = '%year%/%monthnum%/%day%';
// Do not allow the date tags and %post_id% to overlap in the permalink
// structure. If they do, move the date tags to $front/date/.
$front = $this->front;
preg_match_all('/%.+?%/', $this->permalink_structure, $tokens);
$tok_index = 1;
foreach ( (array) $tokens[0] as $token) {
if ( '%post_id%' == $token && ($tok_index <= 3) ) {
$front = $front . 'date/';
break;
}
$tok_index++;
}
$this->date_structure = $front . $date_endian;
return $this->date_structure;
}
/**
* Retrieve the year permalink structure without month and day.
*
* Gets the date permalink structure and strips out the month and day
* permalink structures.
*
* @since 1.5.0
* @access public
*
* @return false|string False on failure. Year structure on success.
*/
public function get_year_permastruct() {
$structure = $this->get_date_permastruct();
if ( empty($structure) )
return false;
$structure = str_replace('%monthnum%', '', $structure);
$structure = str_replace('%day%', '', $structure);
$structure = preg_replace('#/+#', '/', $structure);
return $structure;
}
/**
* Retrieve the month permalink structure without day and with year.
*
* Gets the date permalink structure and strips out the day permalink
* structures. Keeps the year permalink structure.
*
* @since 1.5.0
* @access public
*
* @return false|string False on failure. Year/Month structure on success.
*/
public function get_month_permastruct() {
$structure = $this->get_date_permastruct();
if ( empty($structure) )
return false;
$structure = str_replace('%day%', '', $structure);
$structure = preg_replace('#/+#', '/', $structure);
return $structure;
}
/**
* Retrieve the day permalink structure with month and year.
*
* Keeps date permalink structure with all year, month, and day.
*
* @since 1.5.0
* @access public
*
* @return string|false False on failure. Year/Month/Day structure on success.
*/
public function get_day_permastruct() {
return $this->get_date_permastruct();
}
/**
* Retrieve the permalink structure for categories.
*
* If the category_base property has no value, then the category structure
* will have the front property value, followed by 'category', and finally
* '%category%'. If it does, then the root property will be used, along with
* the category_base property value.
*
* @since 1.5.0
* @access public
*
* @return string|false False on failure. Category permalink structure.
*/
public function get_category_permastruct() {
return $this->get_extra_permastruct('category');
}
/**
* Retrieve the permalink structure for tags.
*
* If the tag_base property has no value, then the tag structure will have
* the front property value, followed by 'tag', and finally '%tag%'. If it
* does, then the root property will be used, along with the tag_base
* property value.
*
* @since 2.3.0
* @access public
*
* @return string|false False on failure. Tag permalink structure.
*/
public function get_tag_permastruct() {
return $this->get_extra_permastruct('post_tag');
}
/**
* Retrieve extra permalink structure by name.
*
* @since 2.5.0
* @access public
*
* @param string $name Permalink structure name.
* @return string|false False if not found. Permalink structure string.
*/
public function get_extra_permastruct($name) {
if ( empty($this->permalink_structure) )
return false;
if ( isset($this->extra_permastructs[$name]) )
return $this->extra_permastructs[$name]['struct'];
return false;
}
/**
* Retrieve the author permalink structure.
*
* The permalink structure is front property, author base, and finally
* '/%author%'. Will set the author_structure property and then return it
* without attempting to set the value again.
*
* @since 1.5.0
* @access public
*
* @return string|false False if not found. Permalink structure string.
*/
public function get_author_permastruct() {
if ( isset($this->author_structure) )
return $this->author_structure;
if ( empty($this->permalink_structure) ) {
$this->author_structure = '';
return false;
}
$this->author_structure = $this->front . $this->author_base . '/%author%';
return $this->author_structure;
}
/**
* Retrieve the search permalink structure.
*
* The permalink structure is root property, search base, and finally
* '/%search%'. Will set the search_structure property and then return it
* without attempting to set the value again.
*
* @since 1.5.0
* @access public
*
* @return string|false False if not found. Permalink structure string.
*/
public function get_search_permastruct() {
if ( isset($this->search_structure) )
return $this->search_structure;
if ( empty($this->permalink_structure) ) {
$this->search_structure = '';
return false;
}
$this->search_structure = $this->root . $this->search_base . '/%search%';
return $this->search_structure;
}
/**
* Retrieve the page permalink structure.
*
* The permalink structure is root property, and '%pagename%'. Will set the
* page_structure property and then return it without attempting to set the
* value again.
*
* @since 1.5.0
* @access public
*
* @return string|false False if not found. Permalink structure string.
*/
public function get_page_permastruct() {
if ( isset($this->page_structure) )
return $this->page_structure;
if (empty($this->permalink_structure)) {
$this->page_structure = '';
return false;
}
$this->page_structure = $this->root . '%pagename%';
return $this->page_structure;
}
/**
* Retrieve the feed permalink structure.
*
* The permalink structure is root property, feed base, and finally
* '/%feed%'. Will set the feed_structure property and then return it
* without attempting to set the value again.
*
* @since 1.5.0
* @access public
*
* @return string|false False if not found. Permalink structure string.
*/
public function get_feed_permastruct() {
if ( isset($this->feed_structure) )
return $this->feed_structure;
if ( empty($this->permalink_structure) ) {
$this->feed_structure = '';
return false;
}
$this->feed_structure = $this->root . $this->feed_base . '/%feed%';
return $this->feed_structure;
}
/**
* Retrieve the comment feed permalink structure.
*
* The permalink structure is root property, comment base property, feed
* base and finally '/%feed%'. Will set the comment_feed_structure property
* and then return it without attempting to set the value again.
*
* @since 1.5.0
* @access public
*
* @return string|false False if not found. Permalink structure string.
*/
public function get_comment_feed_permastruct() {
if ( isset($this->comment_feed_structure) )
return $this->comment_feed_structure;
if (empty($this->permalink_structure)) {
$this->comment_feed_structure = '';
return false;
}
$this->comment_feed_structure = $this->root . $this->comments_base . '/' . $this->feed_base . '/%feed%';
return $this->comment_feed_structure;
}
/**
* Add or update existing rewrite tags (e.g. %postname%).
*
* If the tag already exists, replace the existing pattern and query for
* that tag, otherwise add the new tag.
*
* @see WP_Rewrite::$rewritecode
* @see WP_Rewrite::$rewritereplace
* @see WP_Rewrite::$queryreplace
* @since 1.5.0
* @access public
*
* @param string $tag Name of the rewrite tag to add or update.
* @param string $regex Regular expression to substitute the tag for in rewrite rules.
* @param string $query String to append to the rewritten query. Must end in '='.
*/
public function add_rewrite_tag( $tag, $regex, $query ) {
$position = array_search( $tag, $this->rewritecode );
if ( false !== $position && null !== $position ) {
$this->rewritereplace[ $position ] = $regex;
$this->queryreplace[ $position ] = $query;
} else {
$this->rewritecode[] = $tag;
$this->rewritereplace[] = $regex;
$this->queryreplace[] = $query;
}
}
/**
* Generate rewrite rules from a permalink structure.
*
* The main WP_Rewrite function for building the rewrite rule list. The
* contents of the function is a mix of black magic and regular expressions,
* so best just ignore the contents and move to the parameters.
*
* @since 1.5.0
* @access public
*
* @param string $permalink_structure The permalink structure.
* @param int $ep_mask Endpoint mask defining what endpoints are added to the structure. Default is EP_NONE.
* @param bool $paged Should archive pagination rules be added for the structure? Default is true.
* @param bool $feed Should feed rewrite rules be added for the structure? Default is true.
* @param bool $forcomments Should the feed rules be a query for a comments feed? Default is false.
* @param bool $walk_dirs Should the 'directories' making up the structure be walked over and rewrite rules
* built for each in turn? Default is true.
* @param bool $endpoints Should endpoints be applied to the generated rewrite rules? Default is true.
* @return array Rewrite rule list.
*/
public function generate_rewrite_rules($permalink_structure, $ep_mask = EP_NONE, $paged = true, $feed = true, $forcomments = false, $walk_dirs = true, $endpoints = true) {
//build a regex to match the feed section of URLs, something like (feed|atom|rss|rss2)/?
$feedregex2 = '';
foreach ( (array) $this->feeds as $feed_name)
$feedregex2 .= $feed_name . '|';
$feedregex2 = '(' . trim($feedregex2, '|') . ')/?$';
//$feedregex is identical but with /feed/ added on as well, so URLs like <permalink>/feed/atom
//and <permalink>/atom are both possible
$feedregex = $this->feed_base . '/' . $feedregex2;
//build a regex to match the trackback and page/xx parts of URLs
$trackbackregex = 'trackback/?$';
$pageregex = $this->pagination_base . '/?([0-9]{1,})/?$';
$commentregex = $this->comments_pagination_base . '-([0-9]{1,})/?$';
$embedregex = 'embed/?$';
//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);
//if asked to, turn the feed queries into comment feed ones
if ( $forcomments ) {
$feedquery .= '&withcomments=1';
$feedquery2 .= '&withcomments=1';
}
//start creating the array of rewrites for this dir
$rewrite = array();
if ( $feed ) //...adding on /feed/ regexes => queries
$rewrite = array($feedmatch => $feedquery, $feedmatch2 => $feedquery2);
if ( $paged ) //...and /page/xx ones
$rewrite = array_merge($rewrite, array($pagematch => $pagequery));
//only on pages with comments add ../comment-page-xx/
if ( EP_PAGES & $ep_mask || EP_PERMALINK & $ep_mask ) {
$rewrite = array_merge($rewrite, array($commentmatch => $commentquery));
} elseif ( EP_ROOT & $ep_mask && get_option('page_on_front') ) {
$rewrite = array_merge($rewrite, array($rootcommentmatch => $rootcommentquery));
}
//do endpoints
if ( $endpoints ) {
foreach ( (array) $ep_query_append as $regex => $ep) {
//add the endpoints on if the mask fits
if ( $ep[0] & $ep_mask || $ep[0] & $ep_mask_specific )
$rewrite[$match . $regex] = $index . '?' . $query . $ep[1] . $this->preg_index($num_toks + 2);
}
}
//if we've got some tags in this dir
if ( $num_toks ) {
$post = false;
$page = false;
//check to see if this dir is permalink-level: i.e. the structure specifies an
//individual post. Do this by checking it contains at least one of 1) post name,
//2) post ID, 3) page name, 4) timestamp (year, month, day, hour, second and
//minute all present). Set these flags now as we need them for the endpoints.
if ( strpos($struct, '%postname%') !== false
|| strpos($struct, '%post_id%') !== false
|| strpos($struct, '%pagename%') !== false
|| (strpos($struct, '%year%') !== false && strpos($struct, '%monthnum%') !== false && strpos($struct, '%day%') !== false && strpos($struct, '%hour%') !== false && strpos($struct, '%minute%') !== false && strpos($struct, '%second%') !== false)
) {
$post = true;
if ( strpos($struct, '%pagename%') !== false )
$page = true;
}
if ( ! $post ) {
// For custom post types, we need to add on endpoints as well.
foreach ( get_post_types( array('_builtin' => false ) ) as $ptype ) {
if ( strpos($struct, "%$ptype%") !== false ) {
$post = true;
$page = is_post_type_hierarchical( $ptype ); // This is for page style attachment url's
break;
}
}
}
//if we're creating rules for a permalink, do all the endpoints like attachments etc
if ( $post ) {
//create query and regex for trackback
$trackbackmatch = $match . $trackbackregex;
$trackbackquery = $trackbackindex . '?' . $query . '&tb=1';
// 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 <permalink>/some-text
$sub1 = $submatchbase . '/([^/]+)/';
$sub1tb = $sub1 . $trackbackregex; //add trackback regex <permalink>/trackback/...
$sub1feed = $sub1 . $feedregex; //and <permalink>/feed/(atom|...)
$sub1feed2 = $sub1 . $feedregex2; //and <permalink>/(feed|atom...)
$sub1comment = $sub1 . $commentregex; //and <permalink>/comment-page-xx
$sub1embed = $sub1 . $embedregex; //and <permalink>/embed/...
//add another rule to match attachments in the explicit form:
//<permalink>/attachment/some-text
$sub2 = $submatchbase . '/attachment/([^/]+)/';
$sub2tb = $sub2 . $trackbackregex; //and add trackbacks <permalink>/attachment/trackback
$sub2feed = $sub2 . $feedregex; //feeds, <permalink>/attachment/feed/(atom|...)
$sub2feed2 = $sub2 . $feedregex2; //and feeds again on to this <permalink>/attachment/(feed|atom...)
$sub2comment = $sub2 . $commentregex; //and <permalink>/comment-page-xx
$sub2embed = $sub2 . $embedregex; //and <permalink>/embed/...
//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. <permalink>/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);
} 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 embed
$rewrite = array_merge( array( $embedmatch => $embedquery ), $rewrite );
//add regexes/queries for attachments, attachment trackbacks and so on
if ( ! $page ) {
//require <permalink>/attachment/stuff form for pages because of confusion with subpages
$rewrite = array_merge( $rewrite, array(
$sub1 => $subquery,
$sub1tb => $subtbquery,
$sub1feed => $subfeedquery,
$sub1feed2 => $subfeedquery,
$sub1comment => $subcommentquery,
$sub1embed => $subembedquery
) );
}
$rewrite = array_merge( array( $sub2 => $subquery, $sub2tb => $subtbquery, $sub2feed => $subfeedquery, $sub2feed2 => $subfeedquery, $sub2comment => $subcommentquery, $sub2embed => $subembedquery ), $rewrite );
}
} //if($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 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
* @access public
*
* @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 $walk_dirs Optional, default is false. Whether to create list of directories to walk over.
* @return array
*/
public function generate_rewrite_rule($permalink_structure, $walk_dirs = false) {
return $this->generate_rewrite_rules($permalink_structure, EP_NONE, false, false, false, $walk_dirs);
}
/**
* Construct rewrite matches and queries from permalink structure.
*
* Runs the action 'generate_rewrite_rules' with the parameter that is an
* reference to the current WP_Rewrite instance to further manipulate the
* permalink structures and rewrite rules. Runs the 'rewrite_rules_array'
* filter on the full rewrite rule array.
*
* There are two ways to manipulate the rewrite rules, one by hooking into
* the 'generate_rewrite_rules' action and gaining full control of the
* object or just manipulating the rewrite rule array before it is passed
* from the function.
*
* @since 1.5.0
* @access public
*
* @return array An associate array of matches and queries.
*/
public function rewrite_rules() {
$rewrite = array();
if ( empty($this->permalink_structure) )
return $rewrite;
// robots.txt -only if installed at the root
$home_path = parse_url( home_url() );
$robots_rewrite = ( empty( $home_path['path'] ) || '/' == $home_path['path'] ) ? array( 'robots\.txt$' => $this->index . '?robots=1' ) : array();
// Old feed and service files
$deprecated_files = array(
'.*wp-(atom|rdf|rss|rss2|feed|commentsrss2)\.php$' => $this->index . '?feed=old',
'.*wp-app\.php(/.*)?$' => $this->index . '?error=403',
);
// Registration rules
$registration_pages = array();
if ( is_multisite() && is_main_site() ) {
$registration_pages['.*wp-signup.php$'] = $this->index . '?signup=true';
$registration_pages['.*wp-activate.php$'] = $this->index . '?activate=true';
}
$registration_pages['.*wp-register.php$'] = $this->index . '?register=true'; // Deprecated
// Post rewrite rules.
$post_rewrite = $this->generate_rewrite_rules( $this->permalink_structure, EP_PERMALINK );
/**
* Filter rewrite rules used for "post" archives.
*
* @since 1.5.0
*
* @param array $post_rewrite The rewrite rules for posts.
*/
$post_rewrite = apply_filters( 'post_rewrite_rules', $post_rewrite );
// Date rewrite rules.
$date_rewrite = $this->generate_rewrite_rules($this->get_date_permastruct(), EP_DATE);
/**
* Filter rewrite rules used for date archives.
*
* Likely date archives would include /yyyy/, /yyyy/mm/, and /yyyy/mm/dd/.
*
* @since 1.5.0
*
* @param array $date_rewrite The rewrite rules for date archives.
*/
$date_rewrite = apply_filters( 'date_rewrite_rules', $date_rewrite );
// Root-level rewrite rules.
$root_rewrite = $this->generate_rewrite_rules($this->root . '/', EP_ROOT);
/**
* Filter rewrite rules used for root-level archives.
*
* Likely root-level archives would include pagination rules for the homepage
* as well as site-wide post feeds (e.g. /feed/, and /feed/atom/).
*
* @since 1.5.0
*
* @param array $root_rewrite The root-level rewrite rules.
*/
$root_rewrite = apply_filters( 'root_rewrite_rules', $root_rewrite );
// Comments rewrite rules.
$comments_rewrite = $this->generate_rewrite_rules($this->root . $this->comments_base, EP_COMMENTS, false, true, true, false);
/**
* Filter rewrite rules used for comment feed archives.
*
* Likely comments feed archives include /comments/feed/, and /comments/feed/atom/.
*
* @since 1.5.0
*
* @param array $comments_rewrite The rewrite rules for the site-wide comments feeds.
*/
$comments_rewrite = apply_filters( 'comments_rewrite_rules', $comments_rewrite );
// Search rewrite rules.
$search_structure = $this->get_search_permastruct();
$search_rewrite = $this->generate_rewrite_rules($search_structure, EP_SEARCH);
/**
* Filter rewrite rules used for search archives.
*
* Likely search-related archives include /search/search+query/ as well as
* pagination and feed paths for a search.
*
* @since 1.5.0
*
* @param array $search_rewrite The rewrite rules for search queries.
*/
$search_rewrite = apply_filters( 'search_rewrite_rules', $search_rewrite );
// Author rewrite rules.
$author_rewrite = $this->generate_rewrite_rules($this->get_author_permastruct(), EP_AUTHORS);
/**
* Filter rewrite rules used for author archives.
*
* Likely author archives would include /author/author-name/, as well as
* pagination and feed paths for author archives.
*
* @since 1.5.0
*
* @param array $author_rewrite The rewrite rules for author archives.
*/
$author_rewrite = apply_filters( 'author_rewrite_rules', $author_rewrite );
// Pages rewrite rules.
$page_rewrite = $this->page_rewrite_rules();
/**
* Filter rewrite rules used for "page" post type archives.
*
* @since 1.5.0
*
* @param array $page_rewrite The rewrite rules for the "page" post type.
*/
$page_rewrite = apply_filters( 'page_rewrite_rules', $page_rewrite );
// Extra permastructs.
foreach ( $this->extra_permastructs as $permastructname => $struct ) {
if ( is_array( $struct ) ) {
if ( count( $struct ) == 2 )
$rules = $this->generate_rewrite_rules( $struct[0], $struct[1] );
else
$rules = $this->generate_rewrite_rules( $struct['struct'], $struct['ep_mask'], $struct['paged'], $struct['feed'], $struct['forcomments'], $struct['walk_dirs'], $struct['endpoints'] );
} else {
$rules = $this->generate_rewrite_rules( $struct );
}
/**
* Filter rewrite rules used for individual permastructs.
*
* The dynamic portion of the hook name, `$permastructname`, refers
* to the name of the registered permastruct, e.g. 'post_tag' (tags),
* 'category' (categories), etc.
*
* @since 3.1.0
*
* @param array $rules The rewrite rules generated for the current permastruct.
*/
$rules = apply_filters( $permastructname . '_rewrite_rules', $rules );
if ( 'post_tag' == $permastructname ) {
/**
* Filter rewrite rules used specifically for Tags.
*
* @since 2.3.0
* @deprecated 3.1.0 Use 'post_tag_rewrite_rules' instead
*
* @param array $rules The rewrite rules generated for tags.
*/
$rules = apply_filters( 'tag_rewrite_rules', $rules );
}
$this->extra_rules_top = array_merge($this->extra_rules_top, $rules);
}
// Put them together.
if ( $this->use_verbose_page_rules )
$this->rules = array_merge($this->extra_rules_top, $robots_rewrite, $deprecated_files, $registration_pages, $root_rewrite, $comments_rewrite, $search_rewrite, $author_rewrite, $date_rewrite, $page_rewrite, $post_rewrite, $this->extra_rules);
else
$this->rules = array_merge($this->extra_rules_top, $robots_rewrite, $deprecated_files, $registration_pages, $root_rewrite, $comments_rewrite, $search_rewrite, $author_rewrite, $date_rewrite, $post_rewrite, $page_rewrite, $this->extra_rules);
/**
* Fires after the rewrite rules are generated.
*
* @since 1.5.0
*
* @param WP_Rewrite $this Current WP_Rewrite instance, passed by reference.
*/
do_action_ref_array( 'generate_rewrite_rules', array( &$this ) );
/**
* Filter the full set of generated rewrite rules.
*
* @since 1.5.0
*
* @param array $this->rules The compiled array of rewrite rules.
*/
$this->rules = apply_filters( 'rewrite_rules_array', $this->rules );
return $this->rules;
}
/**
* Retrieve the rewrite rules.
*
* The difference between this method and WP_Rewrite::rewrite_rules() is that
* this method stores the rewrite rules in the 'rewrite_rules' option and retrieves
* it. This prevents having to process all of the permalinks to get the rewrite rules
* in the form of caching.
*
* @since 1.5.0
* @access public
*
* @return array Rewrite rules.
*/
public function wp_rewrite_rules() {
$this->rules = get_option('rewrite_rules');
if ( empty($this->rules) ) {
$this->matches = 'matches';
$this->rewrite_rules();
update_option('rewrite_rules', $this->rules);
}
return $this->rules;
}
/**
* Retrieve mod_rewrite formatted rewrite rules to write to .htaccess.
*
* Does not actually write to the .htaccess file, but creates the rules for
* the process that will.
*
* Will add the non_wp_rules property rules to the .htaccess file before
* the WordPress rewrite rules one.
*
* @since 1.5.0
* @access public
*
* @return string
*/
public function mod_rewrite_rules() {
if ( ! $this->using_permalinks() )
return '';
$site_root = parse_url( site_url() );
if ( isset( $site_root['path'] ) )
$site_root = trailingslashit($site_root['path']);
$home_root = parse_url(home_url());
if ( isset( $home_root['path'] ) )
$home_root = trailingslashit($home_root['path']);
else
$home_root = '/';
$rules = "<IfModule mod_rewrite.c>\n";
$rules .= "RewriteEngine On\n";
$rules .= "RewriteBase $home_root\n";
$rules .= "RewriteRule ^index\.php$ - [L]\n"; // Prevent -f checks on index.php.
//add in the rules that don't redirect to WP's index.php (and thus shouldn't be handled by WP at all)
foreach ( (array) $this->non_wp_rules as $match => $query) {
// Apache 1.3 does not support the reluctant (non-greedy) modifier.
$match = str_replace('.+?', '.+', $match);
// If the match is unanchored and greedy, prepend rewrite conditions
// to avoid infinite redirects and eclipsing of real files.
//if ($match == '(.+)/?$' || $match == '([^/]+)/?$' ) {
//nada.
//}
$rules .= 'RewriteRule ^' . $match . ' ' . $home_root . $query . " [QSA,L]\n";
}
if ( $this->use_verbose_rules ) {
$this->matches = '';
$rewrite = $this->rewrite_rules();
$num_rules = count($rewrite);
$rules .= "RewriteCond %{REQUEST_FILENAME} -f [OR]\n" .
"RewriteCond %{REQUEST_FILENAME} -d\n" .
"RewriteRule ^.*$ - [S=$num_rules]\n";
foreach ( (array) $rewrite as $match => $query) {
// Apache 1.3 does not support the reluctant (non-greedy) modifier.
$match = str_replace('.+?', '.+', $match);
// If the match is unanchored and greedy, prepend rewrite conditions
// to avoid infinite redirects and eclipsing of real files.
//if ($match == '(.+)/?$' || $match == '([^/]+)/?$' ) {
//nada.
//}
if ( strpos($query, $this->index) !== false )
$rules .= 'RewriteRule ^' . $match . ' ' . $home_root . $query . " [QSA,L]\n";
else
$rules .= 'RewriteRule ^' . $match . ' ' . $site_root . $query . " [QSA,L]\n";
}
} else {
$rules .= "RewriteCond %{REQUEST_FILENAME} !-f\n" .
"RewriteCond %{REQUEST_FILENAME} !-d\n" .
"RewriteRule . {$home_root}{$this->index} [L]\n";
}
$rules .= "</IfModule>\n";
/**
*
* Filter the list of rewrite rules formatted for output to an .htaccess file.
*
* @since 1.5.0
*
* @param string $rules mod_rewrite Rewrite rules formatted for .htaccess.
*/
$rules = apply_filters( 'mod_rewrite_rules', $rules );
/**
* Filter the list of rewrite rules formatted for output to an .htaccess file.
*
* @since 1.5.0
* @deprecated 1.5.0 Use the mod_rewrite_rules filter instead.
*
* @param string $rules mod_rewrite Rewrite rules formatted for .htaccess.
*/
return apply_filters( 'rewrite_rules', $rules );
}
/**
* Retrieve IIS7 URL Rewrite formatted rewrite rules to write to web.config file.
*
* Does not actually write to the web.config file, but creates the rules for
* the process that will.
*
* @since 2.8.0
* @access public
*
* @return string
*/
public function iis7_url_rewrite_rules( $add_parent_tags = false ) {
if ( ! $this->using_permalinks() )
return '';
$rules = '';
if ( $add_parent_tags ) {
$rules .= '<configuration>
<system.webServer>
<rewrite>
<rules>';
}
$rules .= '
<rule name="wordpress" patternSyntax="Wildcard">
<match url="*" />
<conditions>
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
</conditions>
<action type="Rewrite" url="index.php" />
</rule>';
if ( $add_parent_tags ) {
$rules .= '
</rules>
</rewrite>
</system.webServer>
</configuration>';
}
/**
* Filter the list of rewrite rules formatted for output to a web.config.
*
* @since 2.8.0
*
* @param string $rules Rewrite rules formatted for IIS web.config.
*/
return apply_filters( 'iis7_url_rewrite_rules', $rules );
}
/**
* Add a straight rewrite rule.
*
* Any value in the $after parameter that isn't 'bottom' will be placed at
* the top of the rules.
*
* @since 2.1.0
* @since 4.4.0 Array support was added to the `$redirect` parameter.
* @access public
*
* @param string $regex Regular expression to match against request.
* @param string|array $redirect URL regex redirects to when regex matches request, or array
* of query vars and values.
* @param string $after Optional, default is bottom. Location to place rule.
*/
public function add_rule( $regex, $redirect, $after = 'bottom' ) {
if ( is_array( $redirect ) ) {
$external = false;
$redirect = add_query_arg( $redirect, 'index.php' );
} else {
$index = false === strpos( $redirect, '?' ) ? strlen( $redirect ) : strpos( $redirect, '?' );
$front = substr( $redirect, 0, $index );
$external = $front != $this->index;
}
// "external" = it doesn't redirect to index.php
if ( $external ) {
$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 ) );
}
}
}
/**
* Add a rule that doesn't redirect to index.php.
*
* Can redirect to any place.
*
* @since 2.1.0
* @access public
*
* @param string $regex Regular expression to match against request.
* @param string $redirect URL regex redirects to when regex matches request.
*/
public function add_external_rule($regex, $redirect) {
$this->non_wp_rules[$regex] = $redirect;
}
/**
* Add an endpoint, like /trackback/.
*
* @since 2.1.0
* @since 3.9.0 $query_var parameter added.
* @since 4.3.0 Added support for skipping query var registration by passing `false` to `$query_var`.
* @access public
*
* @see add_rewrite_endpoint() for full documentation.
*
* @global WP $wp
*
* @param string $name Name of the endpoint.
* @param int $places Endpoint mask describing the places the endpoint should be added.
* @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 === func_get_arg( 2 ) ) {
$query_var = $name;
}
$this->endpoints[] = array( $places, $name, $query_var );
if ( $query_var ) {
$wp->add_query_var( $query_var );
}
}
/**
* Add a new permalink structure.
*
* A permalink structure (permastruct) is an abstract definition of a set of rewrite rules;
* it is an easy way of expressing a set of regular expressions that rewrite to a set of
* query strings. The new permastruct is added to the WP_Rewrite::$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
* @access public
*
* @param string $name Name for permalink structure.
* @param string $struct Permalink structure (e.g. category/%category%)
* @param array $args Optional configuration for building the rules from the permalink structure:
* - with_front (bool) - Should the structure be prepended with WP_Rewrite::$front? Default is true.
* - ep_mask (int) - Endpoint mask defining what endpoints are added to the structure. Default is EP_NONE.
* - paged (bool) - Should archive pagination rules be added for the structure? Default is true.
* - feed (bool) - Should feed rewrite rules be added for the structure? Default is true.
* - forcomments (bool) - Should the feed rules be a query for a comments feed? Default is false.
* - walk_dirs (bool) - Should the 'directories' making up the structure be walked over and rewrite
* rules built for each in turn? Default is true.
* - endpoints (bool) - Should endpoints be applied to the generated rewrite rules? Default is true.
*/
public function add_permastruct( $name, $struct, $args = array() ) {
// backwards compatibility for the old parameters: $with_front and $ep_mask
if ( ! is_array( $args ) )
$args = array( 'with_front' => $args );
if ( func_num_args() == 4 )
$args['ep_mask'] = func_get_arg( 3 );
$defaults = array(
'with_front' => true,
'ep_mask' => EP_NONE,
'paged' => true,
'feed' => true,
'forcomments' => false,
'walk_dirs' => true,
'endpoints' => true,
);
$args = array_intersect_key( $args, $defaults );
$args = wp_parse_args( $args, $defaults );
if ( $args['with_front'] )
$struct = $this->front . $struct;
else
$struct = $this->root . $struct;
$args['struct'] = $struct;
$this->extra_permastructs[ $name ] = $args;
}
/**
* Remove rewrite rules and then recreate rewrite rules.
*
* Calls 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
*
* @staticvar bool $do_hard_later
*
* @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 );
}
delete_option('rewrite_rules');
$this->wp_rewrite_rules();
/**
* Filter whether a "hard" rewrite rule flush should be performed when requested.
*
* A "hard" flush updates .htaccess (Apache) or web.config (IIS).
*
* @since 3.7.0
*
* @param bool $hard Whether to flush rewrite rules "hard". Default true.
*/
if ( ! $hard || ! apply_filters( 'flush_rewrite_rules_hard', true ) ) {
return;
}
if ( function_exists( 'save_mod_rewrite_rules' ) )
save_mod_rewrite_rules();
if ( function_exists( 'iis7_save_url_rewrite_rules' ) )
iis7_save_url_rewrite_rules();
}
/**
* Sets up the object's properties.
*
* The 'use_verbose_page_rules' object property will be set to true if the
* permalink structure begins with one of the following: '%postname%', '%category%',
* '%tag%', or '%author%'.
*
* @since 1.5.0
* @access public
*/
public function init() {
$this->extra_rules = $this->non_wp_rules = $this->endpoints = array();
$this->permalink_structure = get_option('permalink_structure');
$this->front = substr($this->permalink_structure, 0, strpos($this->permalink_structure, '%'));
$this->root = '';
if ( $this->using_index_permalinks() )
$this->root = $this->index . '/';
unset($this->author_structure);
unset($this->date_structure);
unset($this->page_structure);
unset($this->search_structure);
unset($this->feed_structure);
unset($this->comment_feed_structure);
$this->use_trailing_slashes = ( '/' == substr($this->permalink_structure, -1, 1) );
// Enable generic rules for pages if permalink structure doesn't begin with a wildcard.
if ( preg_match("/^[^%]*%(?:postname|category|tag|author)%/", $this->permalink_structure) )
$this->use_verbose_page_rules = true;
else
$this->use_verbose_page_rules = false;
}
/**
* Set the main permalink structure for the blog.
*
* Will update the 'permalink_structure' option, if there is a difference
* between the current permalink structure and the parameter value. Calls
* WP_Rewrite::init() after the option is updated.
*
* Fires the 'permalink_structure_changed' action once the init call has
* processed passing the old and new values
*
* @since 1.5.0
* @access public
*
* @param string $permalink_structure Permalink structure.
*/
public function set_permalink_structure($permalink_structure) {
if ( $permalink_structure != $this->permalink_structure ) {
$old_permalink_structure = $this->permalink_structure;
update_option('permalink_structure', $permalink_structure);
$this->init();
/**
* Fires after the permalink structure is updated.
*
* @since 2.8.0
*
* @param string $old_permalink_structure The previous permalink structure.
* @param string $permalink_structure The new permalink structure.
*/
do_action( 'permalink_structure_changed', $old_permalink_structure, $permalink_structure );
}
}
/**
* Set the category base for the category permalink.
*
* Will update the 'category_base' option, if there is a difference between
* the current category base and the parameter value. Calls WP_Rewrite::init()
* after the option is updated.
*
* @since 1.5.0
* @access public
*
* @param string $category_base Category permalink structure base.
*/
public function set_category_base($category_base) {
if ( $category_base != get_option('category_base') ) {
update_option('category_base', $category_base);
$this->init();
}
}
/**
* Set the tag base for the tag permalink.
*
* Will update the 'tag_base' option, if there is a difference between the
* current tag base and the parameter value. Calls WP_Rewrite::init() after
* the option is updated.
*
* @since 2.3.0
* @access public
*
* @param string $tag_base Tag permalink structure base.
*/
public function set_tag_base( $tag_base ) {
if ( $tag_base != get_option( 'tag_base') ) {
update_option( 'tag_base', $tag_base );
$this->init();
}
}
/**
* Constructor - Calls init(), which runs setup.
*
* @since 1.5.0
* @access public
*
*/
public function __construct() {
$this->init();
}
}
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