diff options
| author | donncha <donncha@7be80a69-a1ef-0310-a953-fb0f7c49ff36> | 2006-06-22 18:31:50 +0000 |
|---|---|---|
| committer | donncha <donncha@7be80a69-a1ef-0310-a953-fb0f7c49ff36> | 2006-06-22 18:31:50 +0000 |
| commit | d48e85e0ac5e675ca33fac173f30c75403d1033f (patch) | |
| tree | 1164430fa3b83a4d9283961b09c1576f2885e6b2 /wp-includes/rewrite.php | |
| parent | 086dcde66603301531efc6d8087bd06d0546f148 (diff) | |
| download | wordpress-mu-d48e85e0ac5e675ca33fac173f30c75403d1033f.tar.gz wordpress-mu-d48e85e0ac5e675ca33fac173f30c75403d1033f.tar.xz wordpress-mu-d48e85e0ac5e675ca33fac173f30c75403d1033f.zip | |
Moved everything in wp-inst down a directory.
Uses's Ryan Boren's htaccess rules and mods
If you're upgrading, try this on a test server first!
git-svn-id: http://svn.automattic.com/wordpress-mu/trunk@591 7be80a69-a1ef-0310-a953-fb0f7c49ff36
Diffstat (limited to 'wp-includes/rewrite.php')
| -rw-r--r-- | wp-includes/rewrite.php | 891 |
1 files changed, 891 insertions, 0 deletions
diff --git a/wp-includes/rewrite.php b/wp-includes/rewrite.php new file mode 100644 index 0000000..178ee07 --- /dev/null +++ b/wp-includes/rewrite.php @@ -0,0 +1,891 @@ +<?php
+
+/* WP_Rewrite API
+*******************************************************************************/
+
+//Add a straight rewrite rule
+function add_rewrite_rule($regex, $redirect) {
+ global $wp_rewrite;
+ $wp_rewrite->add_rule($regex, $redirect);
+}
+
+//Add a new tag (like %postname%)
+//warning: you must call this on init or earlier, otherwise the query var addition stuff won't work
+function add_rewrite_tag($tagname, $regex) {
+ //validation
+ if (strlen($tagname) < 3 || $tagname{0} != '%' || $tagname{strlen($tagname)-1} != '%') {
+ return;
+ }
+
+ $qv = trim($tagname, '%');
+
+ global $wp_rewrite, $wp;
+ $wp->add_query_var($qv);
+ $wp_rewrite->add_rewrite_tag($tagname, $regex, $qv . '=');
+}
+
+//Add a new feed type like /atom1/
+function add_feed($feedname, $function) {
+ global $wp_rewrite;
+ if (!in_array($feedname, $wp_rewrite->feeds)) { //override the file if it is
+ $wp_rewrite->feeds[] = $feedname;
+ }
+ $hook = 'do_feed_' . $feedname;
+ remove_action($hook, $function, 10, 1);
+ add_action($hook, $function, 10, 1);
+ return $hook;
+}
+
+define('EP_PERMALINK', 1 );
+define('EP_ATTACHMENT', 2 );
+define('EP_DATE', 4 );
+define('EP_YEAR', 8 );
+define('EP_MONTH', 16 );
+define('EP_DAY', 32 );
+define('EP_ROOT', 64 );
+define('EP_COMMENTS', 128 );
+define('EP_SEARCH', 256 );
+define('EP_CATEGORIES', 512 );
+define('EP_AUTHORS', 1024);
+define('EP_PAGES', 2048);
+//pseudo-places
+define('EP_NONE', 0 );
+define('EP_ALL', 255);
+
+//and an endpoint, like /trackback/
+function add_rewrite_endpoint($name, $places) {
+ global $wp_rewrite;
+ $wp_rewrite->add_endpoint($name, $places);
+}
+
+// examine a url (supposedly from this blog) and try to
+// determine the post ID it represents.
+function url_to_postid($url) {
+ global $wp_rewrite;
+
+ // First, check to see if there is a 'p=N' or 'page_id=N' to match against
+ preg_match('#[?&](p|page_id)=(\d+)#', $url, $values);
+ $id = intval($values[2]);
+ if ( $id ) return $id;
+
+ // Check to see if we are using rewrite rules
+ $rewrite = $wp_rewrite->wp_rewrite_rules();
+
+ // Not using rewrite rules, and 'p=N' and 'page_id=N' methods failed, so we're out of options
+ if ( empty($rewrite) )
+ return 0;
+
+ // $url cleanup by Mark Jaquith
+ // This fixes things like #anchors, ?query=strings, missing 'www.',
+ // added 'www.', or added 'index.php/' that will mess up our WP_Query
+ // and return a false negative
+
+ // Get rid of the #anchor
+ $url_split = explode('#', $url);
+ $url = $url_split[0];
+
+ // Get rid of URI ?query=string
+ $url_split = explode('?', $url);
+ $url = $url_split[0];
+
+ // Add 'www.' if it is absent and should be there
+ if ( false !== strpos(get_settings('home'), '://www.') && false === strpos($url, '://www.') )
+ $url = str_replace('://', '://www.', $url);
+
+ // Strip 'www.' if it is present and shouldn't be
+ if ( false === strpos(get_settings('home'), '://www.') )
+ $url = str_replace('://www.', '://', $url);
+
+ // Strip 'index.php/' if we're not using path info permalinks
+ if ( false === strpos($rewrite, 'index.php/') )
+ $url = str_replace('index.php/', '', $url);
+
+ if ( false !== strpos($url, get_settings('home')) ) {
+ // Chop off http://domain.com
+ $url = str_replace(get_settings('home'), '', $url);
+ } else {
+ // Chop off /path/to/blog
+ $home_path = parse_url(get_settings('home'));
+ $home_path = $home_path['path'];
+ $url = str_replace($home_path, '', $url);
+ }
+
+ // Trim leading and lagging slashes
+ $url = trim($url, '/');
+
+ $request = $url;
+
+ // Done with cleanup
+
+ // Look for matches.
+ $request_match = $request;
+ foreach ($rewrite as $match => $query) {
+ // If the requesting file is the anchor of the match, prepend it
+ // to the path info.
+ if ( (! empty($url)) && (strpos($match, $url) === 0) ) {
+ $request_match = $url . '/' . $request;
+ }
+
+ if ( preg_match("!^$match!", $request_match, $matches) ) {
+ // Got a match.
+ // Trim the query of everything up to the '?'.
+ $query = preg_replace("!^.+\?!", '', $query);
+
+ // Substitute the substring matches into the query.
+ eval("\$query = \"$query\";");
+ $query = new WP_Query($query);
+ if ( $query->is_single || $query->is_page )
+ return $query->post->ID;
+ else
+ return 0;
+ }
+ }
+ return 0;
+}
+
+/* WP_Rewrite class
+*******************************************************************************/
+
+class WP_Rewrite {
+ var $permalink_structure;
+ var $category_base;
+ var $category_structure;
+ var $author_base = 'author';
+ var $author_structure;
+ var $date_structure;
+ var $page_structure;
+ var $search_base = 'search';
+ var $search_structure;
+ var $comments_base = 'comments';
+ var $feed_base = 'feed';
+ var $comments_feed_structure;
+ var $feed_structure;
+ var $front;
+ var $root = '';
+ var $index = 'index.php';
+ var $matches = '';
+ var $rules;
+ var $extra_rules; //those not generated by the class, see add_rewrite_rule()
+ var $non_wp_rules; //rules that don't redirect to WP's index.php
+ var $endpoints;
+ var $use_verbose_rules = false;
+ var $rewritecode =
+ array(
+ '%year%',
+ '%monthnum%',
+ '%day%',
+ '%hour%',
+ '%minute%',
+ '%second%',
+ '%postname%',
+ '%post_id%',
+ '%category%',
+ '%author%',
+ '%pagename%',
+ '%search%'
+ );
+
+ 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]+)',
+ '(.+?)',
+ '([^/]+)',
+ '([^/]+)',
+ '(.+)'
+ );
+
+ var $queryreplace =
+ array (
+ 'year=',
+ 'monthnum=',
+ 'day=',
+ 'hour=',
+ 'minute=',
+ 'second=',
+ 'name=',
+ 'p=',
+ 'category_name=',
+ 'author_name=',
+ 'pagename=',
+ 's='
+ );
+
+ var $feeds = array ( 'feed', 'rdf', 'rss', 'rss2', 'atom' );
+
+ function using_permalinks() {
+ if (empty($this->permalink_structure))
+ return false;
+ else
+ return true;
+ }
+
+ function using_index_permalinks() {
+ if (empty($this->permalink_structure)) {
+ return false;
+ }
+
+ // If the index is not in the permalink, we're using mod_rewrite.
+ if (preg_match('#^/*' . $this->index . '#', $this->permalink_structure)) {
+ return true;
+ }
+
+ return false;
+ }
+
+ function using_mod_rewrite_permalinks() {
+ if ( $this->using_permalinks() && ! $this->using_index_permalinks())
+ return true;
+ else
+ return false;
+ }
+
+ function preg_index($number) {
+ $match_prefix = '$';
+ $match_suffix = '';
+
+ if (! empty($this->matches)) {
+ $match_prefix = '$' . $this->matches . '[';
+ $match_suffix = ']';
+ }
+
+ return "$match_prefix$number$match_suffix";
+ }
+
+ function page_rewrite_rules() {
+ $uris = get_settings('page_uris');
+ $attachment_uris = get_settings('page_attachment_uris');
+
+ $rewrite_rules = array();
+ $page_structure = $this->get_page_permastruct();
+ if( is_array( $attachment_uris ) ) {
+ foreach ($attachment_uris as $uri => $pagename) {
+ $this->add_rewrite_tag('%pagename%', "($uri)", 'attachment=');
+ $rewrite_rules = array_merge($rewrite_rules, $this->generate_rewrite_rules($page_structure, EP_PAGES));
+ }
+ }
+ if( is_array( $uris ) ) {
+ foreach ($uris as $uri => $pagename) {
+ $this->add_rewrite_tag('%pagename%', "($uri)", 'pagename=');
+ $rewrite_rules = array_merge($rewrite_rules, $this->generate_rewrite_rules($page_structure, EP_PAGES));
+ }
+ }
+
+ return $rewrite_rules;
+ }
+
+ function get_date_permastruct() {
+ if (isset($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);
+ $tok_index = 1;
+ foreach ($tokens[0] as $token) {
+ if ( ($token == '%post_id%') && ($tok_index <= 3) ) {
+ $front = $front . 'date/';
+ break;
+ }
+ }
+
+ $this->date_structure = $front . $date_endian;
+
+ return $this->date_structure;
+ }
+
+ function get_year_permastruct() {
+ $structure = $this->get_date_permastruct($this->permalink_structure);
+
+ if (empty($structure)) {
+ return false;
+ }
+
+ $structure = str_replace('%monthnum%', '', $structure);
+ $structure = str_replace('%day%', '', $structure);
+
+ $structure = preg_replace('#/+#', '/', $structure);
+
+ return $structure;
+ }
+
+ function get_month_permastruct() {
+ $structure = $this->get_date_permastruct($this->permalink_structure);
+
+ if (empty($structure)) {
+ return false;
+ }
+
+ $structure = str_replace('%day%', '', $structure);
+
+ $structure = preg_replace('#/+#', '/', $structure);
+
+ return $structure;
+ }
+
+ function get_day_permastruct() {
+ return $this->get_date_permastruct($this->permalink_structure);
+ }
+
+ function get_category_permastruct() {
+ if (isset($this->category_structure)) {
+ return $this->category_structure;
+ }
+
+ if (empty($this->permalink_structure)) {
+ $this->category_structure = '';
+ return false;
+ }
+
+ if (empty($this->category_base))
+ $this->category_structure = $this->front . 'category/';
+ else
+ $this->category_structure = $this->category_base . '/';
+
+ $this->category_structure .= '%category%';
+
+ return $this->category_structure;
+ }
+
+ function get_author_permastruct() {
+ if (isset($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 $this->author_structure;
+ }
+
+ function get_search_permastruct() {
+ if (isset($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 $this->search_structure;
+ }
+
+ function get_page_permastruct() {
+ if (isset($this->page_structure)) {
+ return $this->page_structure;
+ }
+
+ if (empty($this->permalink_structure)) {
+ $this->page_structure = '';
+ return false;
+ }
+
+ $this->page_structure = $this->root . '%pagename%';
+
+ return $this->page_structure;
+ }
+
+ function get_feed_permastruct() {
+ if (isset($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 $this->feed_structure;
+ }
+
+ function get_comment_feed_permastruct() {
+ if (isset($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 $this->comment_feed_structure;
+ }
+
+ function add_rewrite_tag($tag, $pattern, $query) {
+ // If the tag already exists, replace the existing pattern and query for
+ // that tag, otherwise add the new tag, pattern, and query to the end of
+ // the arrays.
+ $position = array_search($tag, $this->rewritecode);
+ if (FALSE !== $position && NULL !== $position) {
+ $this->rewritereplace[$position] = $pattern;
+ $this->queryreplace[$position] = $query;
+ } else {
+ $this->rewritecode[] = $tag;
+ $this->rewritereplace[] = $pattern;
+ $this->queryreplace[] = $query;
+ }
+ }
+
+ //the main WP_Rewrite function. generate the rules from permalink structure
+ function generate_rewrite_rules($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)/?
+ $feedregex2 = '';
+ foreach ($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
+ $trackbackregex = 'trackback/?$';
+ $pageregex = 'page/?([0-9]{1,})/?$';
+
+ //build up an array of endpoint regexes to append => queries to append
+ if ($endpoints) {
+ $ep_query_append = array ();
+ foreach ($this->endpoints as $endpoint) {
+ //match everything after the endpoint name, but allow for nothing to appear there
+ $epmatch = $endpoint[1] . '(/(.*))?/?$';
+ //this will be appended on to the rest of the query for each dir
+ $epquery = '&' . $endpoint[1] . '=';
+ $ep_query_append[$epmatch] = array ( $endpoint[0], $epquery );
+ }
+ }
+
+ //get everything up to the first rewrite tag
+ $front = substr($permalink_structure, 0, strpos($permalink_structure, '%'));
+ //build an array of the tags (note that said array ends up being in $tokens[0])
+ preg_match_all('/%.+?%/', $permalink_structure, $tokens);
+
+ $num_tokens = count($tokens[0]);
+
+ $index = $this->index; //probably 'index.php'
+ $feedindex = $index;
+ $trackbackindex = $index;
+ //build a list from the rewritecode and queryreplace arrays, that will look something like
+ //tagname=$matches[i] where i is the current $i
+ for ($i = 0; $i < $num_tokens; ++$i) {
+ if (0 < $i) {
+ $queries[$i] = $queries[$i - 1] . '&';
+ }
+
+ $query_token = str_replace($this->rewritecode, $this->queryreplace, $tokens[0][$i]) . $this->preg_index($i+1);
+ $queries[$i] .= $query_token;
+ }
+
+ //get the structure, minus any cruft (stuff that isn't tags) at the front
+ $structure = $permalink_structure;
+ if ($front != '/') {
+ $structure = str_replace($front, '', $structure);
+ }
+ //create a list of dirs to walk over, making rewrite rules for each level
+ //so for example, a $structure of /%year%/%month%/%postname% would create
+ //rewrite rules for /%year%/, /%year%/%month%/ and /%year%/%month%/%postname%
+ $structure = trim($structure, '/');
+ if ($walk_dirs) {
+ $dirs = explode('/', $structure);
+ } else {
+ $dirs[] = $structure;
+ }
+ $num_dirs = count($dirs);
+
+ //strip slashes from the front of $front
+ $front = preg_replace('|^/+|', '', $front);
+
+ //the main workhorse loop
+ $post_rewrite = array();
+ $struct = $front;
+ for ($j = 0; $j < $num_dirs; ++$j) {
+ //get the struct for this dir, and trim slashes off the front
+ $struct .= $dirs[$j] . '/'; //accumulate. see comment near explode('/', $structure) above
+ $struct = ltrim($struct, '/');
+ //replace tags with regexes
+ $match = str_replace($this->rewritecode, $this->rewritereplace, $struct);
+ //make a list of tags, and store how many there are in $num_toks
+ $num_toks = preg_match_all('/%.+?%/', $struct, $toks);
+ //get the 'tagname=$matches[i]'
+ $query = $queries[$num_toks - 1];
+
+ //set up $ep_mask_specific which is used to match more specific URL types
+ switch ($dirs[$j]) {
+ case '%year%': $ep_mask_specific = EP_YEAR; break;
+ case '%monthnum%': $ep_mask_specific = EP_MONTH; break;
+ case '%day%': $ep_mask_specific = EP_DAY; break;
+ }
+
+ //create query for /page/xx
+ $pagematch = $match . $pageregex;
+ $pagequery = $index . '?' . $query . '&paged=' . $this->preg_index($num_toks + 1);
+
+ //create query for /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 => $pagequery));
+
+ //if we've got some tags in this dir
+ if ($num_toks) {
+ $post = false;
+ $page = false;
+
+ //check to see if this dir is permalink-level: i.e. the structure specifies an
+ //individual post. Do this by checking it contains at least one of 1) post name,
+ //2) post ID, 3) page name, 4) timestamp (year, month, day, hour, second and
+ //minute all present). Set these flags now as we need them for the endpoints.
+ if (strstr($struct, '%postname%') || strstr($struct, '%post_id%')
+ || strstr($struct, '%pagename%')
+ || (strstr($struct, '%year%') && strstr($struct, '%monthnum%') && strstr($struct, '%day%') && strstr($struct, '%hour%') && strstr($struct, '%minute') && strstr($struct, '%second%'))) {
+ $post = true;
+ if ( strstr($struct, '%pagename%') )
+ $page = true;
+ }
+
+ //do endpoints
+ if ($endpoints) {
+ foreach ($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're creating rules for a permalink, do all the endpoints like attachments etc
+ if ($post) {
+ $post = true;
+ //create query and regex for trackback
+ $trackbackmatch = $match . $trackbackregex;
+ $trackbackquery = $trackbackindex . '?' . $query . '&tb=1';
+ //trim slashes from the end of the regex for this dir
+ $match = rtrim($match, '/');
+ //get rid of brackets
+ $submatchbase = str_replace(array('(',')'),'',$match);
+
+ //add a rule for at attachments, which take the form of <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...)
+ //add an ? as we don't have to match that last slash, and finally a $ so we
+ //match to the end of the URL
+
+ //add another rule to match attachments in the explicit form:
+ //<permalink>/attachment/some-text
+ $sub2 = $submatchbase . '/attachment/([^/]+)/';
+ $sub2tb = $sub2 . $trackbackregex; //and add trackbacks <permalink>/attachment/trackback
+ $sub2feed = $sub2 . $feedregex; //feeds, <permalink>/attachment/feed/(atom|...)
+ $sub2feed2 = $sub2 . $feedregex2; //and feeds again on to this <permalink>/attachment/(feed|atom...)
+
+ //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=' . $this->preg_index(2);
+
+ //do endpoints for attachments
+ if ($endpoint) { foreach ($ep_query_append as $regex => $ep) {
+ if ($ep[0] & EP_ATTACHMENT) {
+ $rewrite[$sub1 . $regex] = $subquery . '?' . $ep[1] . $this->preg_index(2);
+ $rewrite[$sub2 . $regex] = $subquery . '?' . $ep[1] . $this->preg_index(2);
+ }
+ } }
+
+ //now we've finished with endpoints, finish off the $sub1 and $sub2 matches
+ $sub1 .= '?$';
+ $sub2 .= '?$';
+
+ //allow URLs like <permalink>/2 for <permalink>/page/2
+ $match = $match . '(/[0-9]+)?/?$';
+ $query = $index . '?' . $query . '&page=' . $this->preg_index($num_toks + 1);
+ } else { //not matching a permalink so this is a lot simpler
+ //close the match and finalise the query
+ $match .= '?$';
+ $query = $index . '?' . $query;
+ }
+
+ //create the final array for this dir by joining the $rewrite array (which currently
+ //only contains rules/queries for trackback, pages etc) to the main regex/query for
+ //this dir
+ $rewrite = array_merge($rewrite, array($match => $query));
+
+ //if we're matching a permalink, add those extras (attachments etc) on
+ if ($post) {
+ //add trackback
+ $rewrite = array_merge(array($trackbackmatch => $trackbackquery), $rewrite);
+
+ //add regexes/queries for attachments, attachment trackbacks and so on
+ if ( ! $page ) //require <permalink>/attachment/stuff form for pages because of confusion with subpages
+ $rewrite = array_merge($rewrite, array($sub1 => $subquery, $sub1tb => $subtbquery, $sub1feed => $subfeedquery, $sub1feed2 => $subfeedquery));
+ $rewrite = array_merge($rewrite, array($sub2 => $subquery, $sub2tb => $subtbquery, $sub2feed => $subfeedquery, $sub2feed2 => $subfeedquery));
+ }
+ } //if($num_toks)
+ //add the rules for this dir to the accumulating $post_rewrite
+ $post_rewrite = array_merge($rewrite, $post_rewrite);
+ } //foreach ($dir)
+ return $post_rewrite; //the finished rules. phew!
+ }
+
+ function generate_rewrite_rule($permalink_structure, $walk_dirs = false) {
+ return $this->generate_rewrite_rules($permalink_structure, EP_NONE, false, false, false, $walk_dirs);
+ }
+
+ /* rewrite_rules
+ * Construct rewrite matches and queries from permalink structure.
+ * Returns an associate array of matches and queries.
+ */
+ function rewrite_rules() {
+ $rewrite = array();
+
+ if (empty($this->permalink_structure)) {
+ return $rewrite;
+ }
+
+ // robots.txt
+ $robots_rewrite = array('robots.txt$' => $this->index . '?robots=1');
+
+ // Post
+ $post_rewrite = $this->generate_rewrite_rules($this->permalink_structure, EP_PERMALINK);
+ $post_rewrite = apply_filters('post_rewrite_rules', $post_rewrite);
+
+ // Date
+ $date_rewrite = $this->generate_rewrite_rules($this->get_date_permastruct(), EP_DATE);
+ $date_rewrite = apply_filters('date_rewrite_rules', $date_rewrite);
+
+ // Root
+ $root_rewrite = $this->generate_rewrite_rules($this->root . '/', EP_ROOT);
+ $root_rewrite = apply_filters('root_rewrite_rules', $root_rewrite);
+
+ // Comments
+ $comments_rewrite = $this->generate_rewrite_rules($this->root . $this->comments_base, EP_COMMENTS, true, true, true, false);
+ $comments_rewrite = apply_filters('comments_rewrite_rules', $comments_rewrite);
+
+ // Search
+ $search_structure = $this->get_search_permastruct();
+ $search_rewrite = $this->generate_rewrite_rules($search_structure, EP_SEARCH);
+ $search_rewrite = apply_filters('search_rewrite_rules', $search_rewrite);
+
+ // Categories
+ $category_rewrite = $this->generate_rewrite_rules($this->get_category_permastruct(), EP_CATEGORIES);
+ $category_rewrite = apply_filters('category_rewrite_rules', $category_rewrite);
+
+ // Authors
+ $author_rewrite = $this->generate_rewrite_rules($this->get_author_permastruct(), EP_AUTHORS);
+ $author_rewrite = apply_filters('author_rewrite_rules', $author_rewrite);
+
+ // Pages
+ $page_rewrite = $this->page_rewrite_rules();
+ $page_rewrite = apply_filters('page_rewrite_rules', $page_rewrite);
+
+ // Put them together.
+ $this->rules = array_merge($robots_rewrite, $page_rewrite, $root_rewrite, $comments_rewrite, $search_rewrite, $category_rewrite, $author_rewrite, $date_rewrite, $post_rewrite, $this->extra_rules);
+
+ do_action('generate_rewrite_rules', array(&$this));
+ $this->rules = apply_filters('rewrite_rules_array', $this->rules);
+
+ return $this->rules;
+ }
+
+ function wp_rewrite_rules() {
+ $this->rules = get_option('rewrite_rules');
+ if ( empty($this->rules) ) {
+ $this->matches = 'matches';
+ $this->rewrite_rules();
+ update_option('rewrite_rules', $this->rules);
+ }
+
+ return $this->rules;
+ }
+
+ function mod_rewrite_rules() {
+ if ( ! $this->using_permalinks()) {
+ return '';
+ }
+
+ $site_root = parse_url(get_settings('siteurl'));
+ $site_root = trailingslashit($site_root['path']);
+
+ $home_root = parse_url(get_settings('home'));
+ $home_root = trailingslashit($home_root['path']);
+
+ $rules = "<IfModule mod_rewrite.c>\n";
+ $rules .= "RewriteEngine On\n";
+ $rules .= "RewriteBase $home_root\n";
+
+ //add in the rules that don't redirect to WP's index.php (and thus shouldn't be handled by WP at all)
+ foreach ($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=$num_rules]\n";
+
+ foreach ($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 (strstr($query, $this->index)) {
+ $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";
+
+ $rules = apply_filters('mod_rewrite_rules', $rules);
+ $rules = apply_filters('rewrite_rules', $rules); // Deprecated
+
+ return $rules;
+ }
+
+ //Add a straight rewrite rule
+ function add_rule($regex, $redirect) {
+ //get everything up to the first ?
+ $index = (strpos($redirect, '?') == false ? strlen($redirect) : strpos($redirect, '?'));
+ $front = substr($redirect, 0, $index);
+ if ($front != $this->index) { //it doesn't redirect to WP's index.php
+ $this->add_external_rule($regex, $redirect);
+ } else {
+ $this->extra_rules[$regex] = $redirect;
+ }
+ }
+
+ //add a rule that doesn't redirect to index.php
+ function add_external_rule($regex, $redirect) {
+ $this->non_wp_rules[$regex] = $redirect;
+ }
+
+ //add an endpoint, like /trackback/, to be inserted after certain URL types (specified in $places)
+ function add_endpoint($name, $places) {
+ global $wp;
+ $this->endpoints[] = array ( $places, $name );
+ $wp->add_query_var($name);
+ }
+
+ function flush_rules() {
+ generate_page_uri_index();
+ delete_option('rewrite_rules');
+ $this->wp_rewrite_rules();
+ if ( function_exists('save_mod_rewrite_rules') )
+ save_mod_rewrite_rules();
+ }
+
+ function init() {
+ $this->extra_rules = $this->non_wp_rules = $this->endpoints = array();
+ $this->permalink_structure = get_settings('permalink_structure');
+ $this->front = substr($this->permalink_structure, 0, strpos($this->permalink_structure, '%'));
+ $this->root = '';
+ if ($this->using_index_permalinks()) {
+ $this->root = $this->index . '/';
+ }
+ $this->category_base = get_settings('category_base');
+ unset($this->category_structure);
+ unset($this->author_structure);
+ unset($this->date_structure);
+ unset($this->page_structure);
+ unset($this->search_structure);
+ unset($this->feed_structure);
+ unset($this->comment_feed_structure);
+ }
+
+ function set_permalink_structure($permalink_structure) {
+ if ($permalink_structure != $this->permalink_structure) {
+ update_option('permalink_structure', $permalink_structure);
+ $this->init();
+ }
+ }
+
+ function set_category_base($category_base) {
+ if ($category_base != $this->category_base) {
+ update_option('category_base', $category_base);
+ $this->init();
+ }
+ }
+
+ function WP_Rewrite() {
+ $this->init();
+ }
+}
+
+?>
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