<?php

class WP {
	var $public_query_vars = array('m', 'p', 'posts', 'w', 'cat', 'withcomments', 'withoutcomments', 's', 'search', 'exact', 'sentence', 'debug', 'calendar', 'page', 'paged', 'more', 'tb', 'pb', 'author', 'order', 'orderby', 'year', 'monthnum', 'day', 'hour', 'minute', 'second', 'name', 'category_name', 'feed', 'author_name', 'static', 'pagename', 'page_id', 'error', 'comments_popup', 'attachment', 'attachment_id', 'subpost', 'subpost_id', 'preview', 'robots');

	var $private_query_vars = array('offset', 'posts_per_page', 'posts_per_archive_page', 'what_to_show', 'showposts', 'nopaging', 'post_type');
	var $extra_query_vars = array();

	var $query_vars;
	var $query_string;
	var $request;
	var $matched_rule;
	var $matched_query;
	var $did_permalink = false;

	function add_query_var($qv) {
		$this->public_query_vars[] = $qv;
	}

	function parse_request($extra_query_vars = '') {
		global $wp_rewrite;

		$this->query_vars = array();

		if ( is_array($extra_query_vars) )
			$this->extra_query_vars = & $extra_query_vars;
		else if (! empty($extra_query_vars))
			parse_str($extra_query_vars, $this->extra_query_vars);

		// Process PATH_INFO, REQUEST_URI, and 404 for permalinks.

		// Fetch the rewrite rules.
		$rewrite = $wp_rewrite->wp_rewrite_rules();

		if (! empty($rewrite)) {
			// If we match a rewrite rule, this will be cleared.
			$error = '404';
			$this->did_permalink = true;

			if ( isset($_SERVER['PATH_INFO']) )
				$pathinfo = $_SERVER['PATH_INFO'];
			else
				$pathinfo = '';
			$pathinfo_array = explode('?', $pathinfo);
			$pathinfo = str_replace("%", "%25", $pathinfo_array[0]);
			$req_uri = $_SERVER['REQUEST_URI'];
			$req_uri_array = explode('?', $req_uri);
			$req_uri = $req_uri_array[0];
			$self = $_SERVER['PHP_SELF'];
			$home_path = parse_url(get_option('home'));
			if ( isset($home_path['path']) )
				$home_path = $home_path['path'];
			else
				$home_path = '';
			$home_path = trim($home_path, '/');

			// Trim path info from the end and the leading home path from the
			// front.  For path info requests, this leaves us with the requesting
			// filename, if any.  For 404 requests, this leaves us with the
			// requested permalink.
			$req_uri = str_replace($pathinfo, '', $req_uri);
			$req_uri = trim($req_uri, '/');
			$req_uri = preg_replace("|^$home_path|", '', $req_uri);
			$req_uri = trim($req_uri, '/');
			$pathinfo = trim($pathinfo, '/');
			$pathinfo = preg_replace("|^$home_path|", '', $pathinfo);
			$pathinfo = trim($pathinfo, '/');
			$self = trim($self, '/');
			$self = preg_replace("|^$home_path|", '', $self);
			$self = str_replace($home_path, '', $self);
			$self = trim($self, '/');

			// The requested permalink is in $pathinfo for path info requests and
			//  $req_uri for other requests.
			if ( ! empty($pathinfo) && !preg_match('|^.*' . $wp_rewrite->index . '$|', $pathinfo) ) {
				$request = $pathinfo;
			} else {
				// If the request uri is the index, blank it out so that we don't try to match it against a rule.
				if ( $req_uri == $wp_rewrite->index )
					$req_uri = '';
				$request = $req_uri;
			}

			$this->request = $request;

			// Look for matches.
			$request_match = $request;
			foreach ($rewrite as $match => $query) {
				// If the requesting file is the anchor of the match, prepend it
				// to the path info.
				if ((! empty($req_uri)) && (strpos($match, $req_uri) === 0) && ($req_uri != $request)) {
					$request_match = $req_uri . '/' . $request;
				}

				if (preg_match("!^$match!", $request_match, $matches) ||
					preg_match("!^$match!", urldecode($request_match), $matches)) {
					// Got a match.
					$this->matched_rule = $match;

					// Trim the query of everything up to the '?'.
					$query = preg_replace("!^.+\?!", '', $query);

					// Substitute the substring matches into the query.
					eval("\$query = \"$query\";");
					$this->matched_query = $query;

					// Parse the query.
					parse_str($query, $perma_query_vars);

					// If we're processing a 404 request, clear the error var
					// since we found something.
					if (isset($_GET['error']))
						unset($_GET['error']);

					if (isset($error))
						unset($error);

					break;
				}
			}

			// If req_uri is empty or if it is a request for ourself, unset error.
			if ( empty($request) || $req_uri == $self || strstr($_SERVER['PHP_SELF'], 'wp-admin/') ) {
				if (isset($_GET['error']))
					unset($_GET['error']);

				if (isset($error))
					unset($error);

				if ( isset($perma_query_vars) && strstr($_SERVER['PHP_SELF'], 'wp-admin/') )
					unset($perma_query_vars);

				$this->did_permalink = false;
			}
		}

		$this->public_query_vars = apply_filters('query_vars', $this->public_query_vars);

		for ($i=0; $i<count($this->public_query_vars); $i += 1) {
			$wpvar = $this->public_query_vars[$i];
			if (isset($this->extra_query_vars[$wpvar]))
				$this->query_vars[$wpvar] = $this->extra_query_vars[$wpvar];
			elseif (isset($GLOBALS[$wpvar]))
				$this->query_vars[$wpvar] = $GLOBALS[$wpvar];
			elseif (!empty($_POST[$wpvar]))
				$this->query_vars[$wpvar] = $_POST[$wpvar];
			elseif (!empty($_GET[$wpvar]))
				$this->query_vars[$wpvar] = $_GET[$wpvar];
			elseif (!empty($perma_query_vars[$wpvar]))
				$this->query_vars[$wpvar] = $perma_query_vars[$wpvar];

			if ( !empty( $this->query_vars[$wpvar] ) )
				$this->query_vars[$wpvar] = (string) $this->query_vars[$wpvar];
		}