classes.php

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<?php

class WP_Query {
	var $query;
	var $query_vars;
	var $queried_object;
	var $queried_object_id;
	var $request;

	var $posts;
	var $post_count = 0;
	var $current_post = -1;
	var $in_the_loop = false;
	var $post;

	var $is_single = false;
	var $is_preview = false;
	var $is_page = false;
	var $is_archive = false;
	var $is_date = false;
	var $is_year = false;
	var $is_month = false;
	var $is_day = false;
	var $is_time = false;
	var $is_author = false;
	var $is_category = false;
	var $is_search = false;
	var $is_feed = false;
	var $is_trackback = false;
	var $is_home = false;
	var $is_404 = false;
	var $is_comments_popup = false;
	var $is_admin = false;
	var $is_attachment = false;

	function init_query_flags() {
		$this->is_single = false;
		$this->is_page = false;
		$this->is_archive = false;
		$this->is_date = false;
		$this->is_year = false;
		$this->is_month = false;
		$this->is_day = false;
		$this->is_time = false;
		$this->is_author = false;
		$this->is_category = false;
		$this->is_search = false;
		$this->is_feed = false;
		$this->is_trackback = false;
		$this->is_home = false;
		$this->is_404 = false;
		$this->is_paged = false;
		$this->is_admin = false;
		$this->is_attachment = false;
	}
	
	function init () {
		unset($this->posts);
		unset($this->query);
		unset($this->query_vars);
		unset($this->queried_object);
		unset($this->queried_object_id);
		$this->post_count = 0;
		$this->current_post = -1;
		$this->in_the_loop = false;
		
		$this->init_query_flags();
	}

	// Reparse the query vars.
	function parse_query_vars() {
		$this->parse_query('');
	}

	// Parse a query string and set query type booleans.
	function parse_query ($query) {
		if ( !empty($query) || !isset($this->query) ) {
			$this->init();
			parse_str($query, $qv);
			$this->query = $query;
			$this->query_vars = $qv;
		}

		if ('404' == $qv['error']) {
			$this->is_404 = true;
			if ( !empty($query) ) {
				do_action('parse_query', array(&$this));
			}
			return;
		}

		$qv['m'] =  (int) $qv['m'];
		$qv['p'] =  (int) $qv['p'];

		// Compat.  Map subpost to attachment.
		if ( '' != $qv['subpost'] )
			$qv['attachment'] = $qv['subpost'];
		if ( '' != $qv['subpost_id'] )
			$qv['attachment_id'] = $qv['subpost_id'];
			
		if ( ('' != $qv['attachment']) || (int) $qv['attachment_id'] ) {
			$this->is_single = true;
			$this->is_attachment = true;
		} elseif ('' != $qv['name']) {
			$this->is_single = true;
		} elseif ( $qv['p'] ) {
			$this->is_single = true;
		} elseif (('' != $qv['hour']) && ('' != $qv['minute']) &&('' != $qv['second']) && ('' != $qv['year']) && ('' != $qv['monthnum']) && ('' != $qv['day'])) {
			// If year, month, day, hour, minute, and second are set, a single 
			// post is being queried.        
			$this->is_single = true;
		} elseif ('' != $qv['static'] || '' != $qv['pagename'] || '' != $qv['page_id']) {
			$this->is_page = true;
			$this->is_single = false;
		} elseif (!empty($qv['s'])) {
			$this->is_search = true;
			switch ($qv['show_post_type']) {
			case 'page' :
				$this->is_page = true;
				break;
			case 'attachment' :
				$this->is_attachment = true;
				break;
			}
		} else {
		// Look for archive queries.  Dates, categories, authors.

			if ( (int) $qv['second']) {
				$this->is_time = true;
				$this->is_date = true;
			}

			if ( (int) $qv['minute']) {
				$this->is_time = true;
				$this->is_date = true;
			}

			if ( (int) $qv['hour']) {
				$this->is_time = true;
				$this->is_date = true;
			}

			if ( (int) $qv['day']) {
				if (! $this->is_date) {
					$this->is_day = true;
					$this->is_date = true;
				}
			}

			if ( (int)  $qv['monthnum']) {
				if (! $this->is_date) {
					$this->is_month = true;
					$this->is_date = true;
				}
			}

			if ( (int)  $qv['year']) {
				if (! $this->is_date) {
					$this->is_year = true;
					$this->is_date = true;
				}
			}

			if ( (int)  $qv['m']) {
				$this->is_date = true;
				if (strlen($qv['m']) > 9) {
					$this->is_time = true;
				} else if (strlen($qv['m']) > 7) {
					$this->is_day = true;
				} else if (strlen($qv['m']) > 5) {
					$this->is_month = true;
				} else {
					$this->is_year = true;
				}
			}

			if ('' != $qv['w']) {
				$this->is_date = true;
			}

			if (empty($qv['cat']) || ($qv['cat'] == '0')) {
				$this->is_category = false;
			} else {
				if (stristr($qv['cat'],'-')) {
					$this->is_category = false;
				} else {
					$this->is_category = true;
				}
			}

			if ('' != $qv['category_name']) {
				$this->is_category = true;
			}
            
			if ((empty($qv['author'])) || ($qv['author'] == '0')) {
				$this->is_author = false;
			} else {
				$this->is_author = true;
			}

			if ('' != $qv['author_name']) {
				$this->is_author = true;
			}

			if ( ($this->is_date || $this->is_author || $this->is_category)) {
				$this->is_archive = true;
			}

			if ( 'attachment' == $qv['show_post_type'] ) {
				$this->is_attachment = true;
			}
		}

		if ('' != $qv['feed']) {
			$this->is_feed = true;
		}

		if ('' != $qv['tb']) {
			$this->is_trackback = true;
		}

		if ('' != $qv['paged']) {
			$this->is_paged = true;
		}

		if ('' != $qv['comments_popup']) {
			$this->is_comments_popup = true;
		}
		
		//if we're previewing inside the write screen
		if ('' != $qv['preview']) {
			$this->is_preview = true;
		}

		if (strstr($_SERVER['PHP_SELF'], 'wp-admin/')) {
			$this->is_admin = true;
		}

		if ( ! ($this->is_attachment || $this->is_archive || $this->is_single || $this->is_page || $this->is_search || $this->is_feed || $this->is_trackback || $this->is_404 || $this->is_admin || $this->is_comments_popup)) {
			$this->is_home = true;
		}

		if ( !empty($query) ) {
			do_action('parse_query', array(&$this));
		}
	}

	function set_404() {
		$this->init_query_flags();
		$this->is_404 = true;	
	}
	
	function get($query_var) {
		if (isset($this->query_vars[$query_var])) {
			return $this->query_vars[$query_var];
		}

		return '';
	}

	function set($query_var, $value) {
		$this->query_vars[$query_var] = $value;
	}

	function &get_posts() {
		global $wpdb, $pagenow, $user_ID;

		do_action('pre_get_posts', array(&$this));

		// Shorthand.
		$q = $this->query_vars;	

		// First let's clear some variables
		$whichcat = '';
		$whichauthor = '';
		$whichpage = '';
		$result = '';
		$where = '';
		$limits = '';
		$distinct = '';
		$join = '';

		if ( !isset($q['posts_per_page']) || $q['posts_per_page'] == 0 )
			$q['posts_per_page'] = get_settings('posts_per_page');
		if ( !isset($q['what_to_show']) )
			$q['what_to_show'] = get_settings('what_to_show');
		if ( isset($q['showposts']) && $q['showposts'] ) {
			$q['showposts'] = (int) $q['showposts'];
			$q['posts_per_page'] = $q['showposts'];
		}
		if ( (isset($q['posts_per_archive_page']) && $q['posts_per_archive_page'] != 0) && ($this->is_archive || $this->is_search) )
			$q['posts_per_page'] = $q['posts_per_archive_page'];
		if ( !isset($q['nopaging']) ) {
			if ($q['posts_per_page'] == -1) {
				$q['nopaging'] = true;
			} else {
				$q['nopaging'] = false;
			}
		}
		if ( $this->is_feed ) {
			$q['posts_per_page'] = get_settings('posts_per_rss');
			$q['what_to_show'] = 'posts';
		}

		if (isset($q['page'])) {
			$q['page'] = trim($q['page'], '/');
			$q['page'] = (int) $q['page'];
			$q['page'] = abs($q['page']);
		}
	
		$add_hours = intval(get_settings('gmt_offset'));
		$add_minutes = intval(60 * (get_settings('gmt_offset') - $add_hours));
		$wp_posts_post_date_field = "post_date"; // "DATE_ADD(post_date, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE)";

		// If a month is specified in the querystring, load that month
		if ( (int) $q['m'] ) {
			$q['m'] = '' . preg_replace('|[^0-9]|', '', $q['m']);
			$where .= ' AND YEAR(post_date)=' . substr($q['m'], 0, 4);
			if (strlen($q['m'])>5)
				$where .= ' AND MONTH(post_date)=' . substr($q['m'], 4, 2);
			if (strlen($q['m'])>7)
				$where .= ' AND DAYOFMONTH(post_date)=' . substr($q['m'], 6, 2);
			if (strlen($q['m'])>9)
				$where .= ' AND HOUR(post_date)=' . substr($q['m'], 8, 2);
			if (strlen($q['m'])>11)
				$where .= ' AND MINUTE(post_date)=' . substr($q['m'], 10, 2);
			if (strlen($q['m'])>13)
				$where .= ' AND SECOND(post_date)=' . substr($q['m'], 12, 2);
		}

		if ( (int) $q['hour'] ) {
			$q['hour'] = '' . intval($q['hour']);
			$where .= " AND HOUR(post_date)='" . $q['hour'] . "'";
		}

		if ( (int) $q['minute'] ) {
			$q['minute'] = '' . intval($q['minute']);
			$where .= " AND MINUTE(post_date)='" . $q['minute'] . "'";
		}

		if ( (int) $q['second'] ) {
			$q['second'] = '' . intval($q['second']);
			$where .= " AND SECOND(post_date)='" . $q['second'] . "'";
		}

		if ( (int) $q['year'] ) {
			$q['year'] = '' . intval($q['year']);
			$where .= " AND YEAR(post_date)='" . $q['year'] . "'";
		}

		if ( (int) $q['monthnum'] ) {
			$q['monthnum'] = '' . intval($q['monthnum']);
			$where .= " AND MONTH(post_date)='" . $q['monthnum'] . "'";
		}

		if ( (int) $q['day'] ) {
			$q['day'] = '' . intval($q['day']);
			$where .= " AND DAYOFMONTH(post_date)='" . $q['day'] . "'";
		}

		// Compat.  Map subpost to attachment.
		if ( '' != $q['subpost'] )
			$q['attachment'] = $q['subpost'];
		if ( '' != $q['subpost_id'] )
			$q['attachment_id'] = $q['subpost_id'];

		if ('' != $q['name']) {
			$q['name'] = sanitize_title($q['name']);
			$where .= " AND post_name = '" . $q['name'] . "'";
		} else if ('' != $q['pagename']) {
			$q['pagename'] = str_replace('%2F', '/', urlencode(urldecode($q['pagename'])));
			$page_paths = '/' . trim($q['pagename'], '/');
			$q['pagename'] = sanitize_title(basename($page_paths));
			$q['name'] = $q['pagename'];
			$page_paths = explode('/', $page_paths);
			foreach($page_paths as $pathdir)
				$page_path .= ($pathdir!=''?'/':'') . sanitize_title($pathdir);
				
			$all_page_ids = get_all_page_ids();
			$reqpage = 0;
			if (is_array($all_page_ids)) { foreach ( $all_page_ids as $page_id ) {
				$page = get_page($page_id);
				if ( $page->fullpath == $page_path ) {
					$reqpage = $page_id;
					break;
				}
			} }
			
			$where .= " AND (ID = '$reqpage')";
		} elseif ('' != $q['attachment']) {
			$q['attachment'] = str_replace('%2F', '/', urlencode(urldecode($q['attachment'])));
			$attach_paths = '/' . trim($q['attachment'], '/');
			$q['attachment'] = sanitize_title(basename($attach_paths));
			$q['name'] = $q['attachment'];
			$where .= " AND post_name = '" . $q['attachment'] . "'";
		}

		if ( (int) $q['w'] ) {
			$q['w'] = ''.intval($q['w']);
			$where .= " AND WEEK(post_date, 1)='" . $q['w'] . "'";
		}

		if ( intval($q['comments_popup']) )
			$q['p'] = intval($q['comments_popup']);

		// If a attachment is requested by number, let it supercede any post number.
		if ( ($q['attachment_id'] != '') && (intval($q['attachment_id']) != 0) )
			$q['p'] = (int) $q['attachment_id'];

		// If a post number is specified, load that post
		if (($q['p'] != '') && intval($q['p']) != 0) {
			$q['p'] =  (int) $q['p'];
			$where = ' AND ID = ' . $q['p'];
		}

		if (($q['page_id'] != '') && (intval($q['page_id']) != 0)) {
			$q['page_id'] = intval($q['page_id']);
			$q['p'] = $q['page_id'];
			$where = ' AND ID = '.$q['page_id'];
		}

		// If a search pattern is specified, load the posts that match
		if (!empty($q['s'])) {
			$q['s'] = addslashes_gpc($q['s']);
			$search = ' AND (';
			$q['s'] = preg_replace('/, +/', ' ', $q['s']);
			$q['s'] = str_replace(',', ' ', $q['s']);
			$q['s'] = str_replace('"', ' ', $q['s']);
			$q['s'] = trim($q['s']);
			if ($q['exact']) {
				$n = '';
			} else {