X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/58f607a1de715c9bca69340a4d6fb9e1b9c2bed2..refs/tags/wordpress-4.4:/wp-admin/includes/export.php

diff --git a/wp-admin/includes/export.php b/wp-admin/includes/export.php
index a9e8f22d..4b18c9c0 100644
--- a/wp-admin/includes/export.php
+++ b/wp-admin/includes/export.php
@@ -11,287 +11,360 @@
  *
  * Bump this when something changes that might affect compatibility.
  *
- * @since unknown
- * @var string
+ * @since 2.5.0
  */
-define('WXR_VERSION', '1.0');
+define( 'WXR_VERSION', '1.2' );
 
 /**
- * {@internal Missing Short Description}}
+ * Generates the WXR export file for download.
  *
- * @since unknown
+ * @since 2.1.0
  *
- * @param unknown_type $args
+ * @global wpdb    $wpdb
+ * @global WP_Post $post
+ *
+ * @param array $args Filters defining what should be included in the export.
  */
 function export_wp( $args = array() ) {
-	global $wpdb, $post_ids, $post, $wp_taxonomies;
-
-	if ( ! is_array( $args ) )
-		$args = array( 'author' => $args );
+	global $wpdb, $post;
 
-	$defaults = array( 'author' => null, 'taxonomy' => null, 'post_type' => null, 'post_status' => null, 'start_date' => null, 'end_date' => null );
+	$defaults = array( 'content' => 'all', 'author' => false, 'category' => false,
+		'start_date' => false, 'end_date' => false, 'status' => false,
+	);
 	$args = wp_parse_args( $args, $defaults );
 
-	extract($args);
-
-	do_action('export_wp');
+	/**
+	 * Fires at the beginning of an export, before any headers are sent.
+	 *
+	 * @since 2.3.0
+	 *
+	 * @param array $args An array of export arguments.
+	 */
+	do_action( 'export_wp', $args );
 
-	if( strlen( $start_date ) > 4 && strlen( $end_date ) > 4 )
-		$filename = 'wordpress.' . $start_date . '.' . $end_date . '.xml';
-	else
-		$filename = 'wordpress.' . date( 'Y-m-d' ) . '.xml';
+	$sitename = sanitize_key( get_bloginfo( 'name' ) );
+	if ( ! empty( $sitename ) ) {
+		$sitename .= '.';
+	}
+	$date = date( 'Y-m-d' );
+	$wp_filename = $sitename . 'wordpress.' . $date . '.xml';
+	/**
+	 * Filter the export filename.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param string $wp_filename The name of the file for download.
+	 * @param string $sitename    The site name.
+	 * @param string $date        Today's date, formatted.
+	 */
+	$filename = apply_filters( 'export_wp_filename', $wp_filename, $sitename, $date );
 
 	header( 'Content-Description: File Transfer' );
 	header( 'Content-Disposition: attachment; filename=' . $filename );
 	header( 'Content-Type: text/xml; charset=' . get_option( 'blog_charset' ), true );
 
-	if ( $post_type && $post_type != 'all' )
-		$where = $wpdb->prepare("WHERE post_type = %s ", $post_type);
-	else
-		$where = "WHERE post_type != 'revision' ";
+	if ( 'all' != $args['content'] && post_type_exists( $args['content'] ) ) {
+		$ptype = get_post_type_object( $args['content'] );
+		if ( ! $ptype->can_export )
+			$args['content'] = 'post';
 
-	if ( $author && $author != 'all' ) {
-		$author_id = (int) $author;
-		$where .= $wpdb->prepare( "AND post_author = %d ", $author_id );
+		$where = $wpdb->prepare( "{$wpdb->posts}.post_type = %s", $args['content'] );
+	} else {
+		$post_types = get_post_types( array( 'can_export' => true ) );
+		$esses = array_fill( 0, count($post_types), '%s' );
+		$where = $wpdb->prepare( "{$wpdb->posts}.post_type IN (" . implode( ',', $esses ) . ')', $post_types );
 	}
 
-	if ( $start_date && $start_date != 'all' )
-		$where .= $wpdb->prepare( "AND post_date >= %s ", $start_date );
-
-	if ( $end_date && $end_date != 'all' )
-		$where .= $wpdb->prepare( "AND post_date < %s ", $end_date );
+	if ( $args['status'] && ( 'post' == $args['content'] || 'page' == $args['content'] ) )
+		$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_status = %s", $args['status'] );
+	else
+		$where .= " AND {$wpdb->posts}.post_status != 'auto-draft'";
 
-	if ( $taxonomy && is_array( $taxonomy ) ) {
-		foreach ( $taxonomy as $term_id ) {
-			if ( $term_id != 'all' )
-				$where .= $wpdb->prepare( "AND ID IN (SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d) ", $term_id );
+	$join = '';
+	if ( $args['category'] && 'post' == $args['content'] ) {
+		if ( $term = term_exists( $args['category'], 'category' ) ) {
+			$join = "INNER JOIN {$wpdb->term_relationships} ON ({$wpdb->posts}.ID = {$wpdb->term_relationships}.object_id)";
+			$where .= $wpdb->prepare( " AND {$wpdb->term_relationships}.term_taxonomy_id = %d", $term['term_taxonomy_id'] );
 		}
 	}
 
-	if ( $post_status && $post_status != 'all' )
-		$where .= $wpdb->prepare( "AND post_status = %s", $post_status );
+	if ( 'post' == $args['content'] || 'page' == $args['content'] || 'attachment' == $args['content'] ) {
+		if ( $args['author'] )
+			$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_author = %d", $args['author'] );
 
-	// grab a snapshot of post IDs, just in case it changes during the export
-	$post_ids = $wpdb->get_col( "SELECT ID FROM $wpdb->posts $where ORDER BY post_date_gmt ASC" );
+		if ( $args['start_date'] )
+			$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_date >= %s", date( 'Y-m-d', strtotime($args['start_date']) ) );
 
-	$categories = (array) get_categories( array( 'get' => 'all' ) );
-	$tags = (array) get_tags( array( 'get' => 'all' ) );
+		if ( $args['end_date'] )
+			$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_date < %s", date( 'Y-m-d', strtotime('+1 month', strtotime($args['end_date'])) ) );
+	}
 
-	$custom_taxonomies = $wp_taxonomies;
-	unset( $custom_taxonomies['category'] );
-	unset( $custom_taxonomies['post_tag'] );
-	unset( $custom_taxonomies['link_category'] );
-	$custom_taxonomies = array_keys( $custom_taxonomies );
-	$terms = (array) get_terms( $custom_taxonomies, array( 'get' => 'all' ) );
+	// Grab a snapshot of post IDs, just in case it changes during the export.
+	$post_ids = $wpdb->get_col( "SELECT ID FROM {$wpdb->posts} $join WHERE $where" );
 
-	/**
-	 * {@internal Missing Short Description}}
-	 *
-	 * @since unknown
-	 *
-	 * @param unknown_type $categories
+	/*
+	 * Get the requested terms ready, empty unless posts filtered by category
+	 * or all content.
 	 */
-	function wxr_missing_parents( $categories ) {
-		if ( ! is_array( $categories ) || empty( $categories ) )
-			return array();
-
-		foreach ( $categories as $category ){
-			$parents[$category->term_id] = $category->parent;
+	$cats = $tags = $terms = array();
+	if ( isset( $term ) && $term ) {
+		$cat = get_term( $term['term_id'], 'category' );
+		$cats = array( $cat->term_id => $cat );
+		unset( $term, $cat );
+	} elseif ( 'all' == $args['content'] ) {
+		$categories = (array) get_categories( array( 'get' => 'all' ) );
+		$tags = (array) get_tags( array( 'get' => 'all' ) );
+
+		$custom_taxonomies = get_taxonomies( array( '_builtin' => false ) );
+		$custom_terms = (array) get_terms( $custom_taxonomies, array( 'get' => 'all' ) );
+
+		// Put categories in order with no child going before its parent.
+		while ( $cat = array_shift( $categories ) ) {
+			if ( $cat->parent == 0 || isset( $cats[$cat->parent] ) )
+				$cats[$cat->term_id] = $cat;
+			else
+				$categories[] = $cat;
 		}
 
-		$parents = array_unique( array_diff( $parents, array_keys( $parents ) ) );
-
-		if ( $zero = array_search( '0', $parents ) )
-			unset( $parents[$zero] );
-
-		return $parents;
-	}
-
-	while ( $parents = wxr_missing_parents( $categories ) ) {
-		$found_parents = get_categories( array( 'include' => join( ', ', $parents) ) );
-		if ( is_array( $found_parents ) && count( $found_parents ) )
-			$categories = array_merge( $categories, $found_parents );
-		else
-			break;
-	}
+		// Put terms in order with no child going before its parent.
+		while ( $t = array_shift( $custom_terms ) ) {
+			if ( $t->parent == 0 || isset( $terms[$t->parent] ) )
+				$terms[$t->term_id] = $t;
+			else
+				$custom_terms[] = $t;
+		}
 
-	// Put them in order to be inserted with no child going before its parent
-	$pass = 0;
-	$passes = 1000 + count( $categories );
-	while ( ( $cat = array_shift( $categories ) ) && ++$pass < $passes ) {
-		if ( $cat->parent == 0 || isset( $cats[$cat->parent] ) )
-			$cats[$cat->term_id] = $cat;
-		else
-			$categories[] = $cat;
+		unset( $categories, $custom_taxonomies, $custom_terms );
 	}
-	unset( $categories );
 
 	/**
-	 * Place string in CDATA tag.
+	 * Wrap given string in XML CDATA tag.
 	 *
-	 * @since unknown
+	 * @since 2.1.0
 	 *
-	 * @param string $str String to place in XML CDATA tag.
+	 * @param string $str String to wrap in XML CDATA tag.
+	 * @return string
 	 */
 	function wxr_cdata( $str ) {
-		if ( seems_utf8( $str ) == false )
+		if ( ! seems_utf8( $str ) ) {
 			$str = utf8_encode( $str );
-
+		}
 		// $str = ent2ncr(esc_html($str));
-		$str = "<![CDATA[$str" . ( ( substr( $str, -1 ) == ']' ) ? ' ' : '') . "]]>";
+		$str = '<![CDATA[' . str_replace( ']]>', ']]]]><![CDATA[>', $str ) . ']]>';
 
 		return $str;
 	}
 
 	/**
-	 * {@internal Missing Short Description}}
+	 * Return the URL of the site
 	 *
-	 * @since unknown
+	 * @since 2.5.0
 	 *
 	 * @return string Site URL.
 	 */
 	function wxr_site_url() {
-		global $current_site;
-
-		// mu: the base url
-		if ( isset( $current_site->domain ) )
+		// Multisite: the base URL.
+		if ( is_multisite() )
 			return network_home_url();
-		// wp: the blog url
+		// WordPress (single site): the blog URL.
 		else
 			return get_bloginfo_rss( 'url' );
 	}
 
 	/**
-	 * {@internal Missing Short Description}}
+	 * Output a cat_name XML tag from a given category object
 	 *
-	 * @since unknown
+	 * @since 2.1.0
 	 *
-	 * @param object $c Category Object
+	 * @param object $category Category Object
 	 */
-	function wxr_cat_name( $c ) {
-		if ( empty( $c->name ) )
+	function wxr_cat_name( $category ) {
+		if ( empty( $category->name ) )
 			return;
 
-		echo '<wp:cat_name>' . wxr_cdata( $c->name ) . '</wp:cat_name>';
+		echo '<wp:cat_name>' . wxr_cdata( $category->name ) . '</wp:cat_name>';
 	}
 
 	/**
-	 * {@internal Missing Short Description}}
+	 * Output a category_description XML tag from a given category object
 	 *
-	 * @since unknown
+	 * @since 2.1.0
 	 *
-	 * @param object $c Category Object
+	 * @param object $category Category Object
 	 */
-	function wxr_category_description( $c ) {
-		if ( empty( $c->description ) )
+	function wxr_category_description( $category ) {
+		if ( empty( $category->description ) )
 			return;
 
-		echo '<wp:category_description>' . wxr_cdata($c->description) . '</wp:category_description>';
+		echo '<wp:category_description>' . wxr_cdata( $category->description ) . '</wp:category_description>';
 	}
 
 	/**
-	 * {@internal Missing Short Description}}
+	 * Output a tag_name XML tag from a given tag object
 	 *
-	 * @since unknown
+	 * @since 2.3.0
 	 *
-	 * @param object $t Tag Object
+	 * @param object $tag Tag Object
 	 */
-	function wxr_tag_name( $t ) {
-		if ( empty( $t->name ) )
+	function wxr_tag_name( $tag ) {
+		if ( empty( $tag->name ) )
 			return;
 
-		echo '<wp:tag_name>' . wxr_cdata($t->name) . '</wp:tag_name>';
+		echo '<wp:tag_name>' . wxr_cdata( $tag->name ) . '</wp:tag_name>';
 	}
 
 	/**
-	 * {@internal Missing Short Description}}
+	 * Output a tag_description XML tag from a given tag object
 	 *
-	 * @since unknown
+	 * @since 2.3.0
 	 *
-	 * @param object $t Tag Object
+	 * @param object $tag Tag Object
 	 */
-	function wxr_tag_description( $t ) {
-		if ( empty( $t->description ) )
+	function wxr_tag_description( $tag ) {
+		if ( empty( $tag->description ) )
 			return;
 
-		echo '<wp:tag_description>' . wxr_cdata($t->description) . '</wp:tag_description>';
+		echo '<wp:tag_description>' . wxr_cdata( $tag->description ) . '</wp:tag_description>';
 	}
 
 	/**
-	 * {@internal Missing Short Description}}
+	 * Output a term_name XML tag from a given term object
 	 *
-	 * @since unknown
+	 * @since 2.9.0
 	 *
-	 * @param object $t Term Object
+	 * @param object $term Term Object
 	 */
-	function wxr_term_name( $t ) {
-		if ( empty( $t->name ) )
+	function wxr_term_name( $term ) {
+		if ( empty( $term->name ) )
 			return;
 
-		echo '<wp:term_name>' . wxr_cdata($t->name) . '</wp:term_name>';
+		echo '<wp:term_name>' . wxr_cdata( $term->name ) . '</wp:term_name>';
 	}
 
 	/**
-	 * {@internal Missing Short Description}}
+	 * Output a term_description XML tag from a given term object
 	 *
-	 * @since unknown
+	 * @since 2.9.0
 	 *
-	 * @param object $t Term Object
+	 * @param object $term Term Object
 	 */
-	function wxr_term_description( $t ) {
-		if ( empty( $t->description ) )
+	function wxr_term_description( $term ) {
+		if ( empty( $term->description ) )
 			return;
 
-		echo '<wp:term_description>' . wxr_cdata($t->description) . '</wp:term_description>';
+		echo '<wp:term_description>' . wxr_cdata( $term->description ) . '</wp:term_description>';
 	}
 
 	/**
-	 * {@internal Missing Short Description}}
+	 * Output list of authors with posts
+	 *
+	 * @since 3.1.0
+	 *
+	 * @global wpdb $wpdb WordPress database abstraction object.
 	 *
-	 * @since unknown
+	 * @param array $post_ids Array of post IDs to filter the query by. Optional.
+	 */
+	function wxr_authors_list( array $post_ids = null ) {
+		global $wpdb;
+
+		if ( !empty( $post_ids ) ) {
+			$post_ids = array_map( 'absint', $post_ids );
+			$and = 'AND ID IN ( ' . implode( ', ', $post_ids ) . ')';
+		} else {
+			$and = '';
+		}
+
+		$authors = array();
+		$results = $wpdb->get_results( "SELECT DISTINCT post_author FROM $wpdb->posts WHERE post_status != 'auto-draft' $and" );
+		foreach ( (array) $results as $result )
+			$authors[] = get_userdata( $result->post_author );
+
+		$authors = array_filter( $authors );
+
+		foreach ( $authors as $author ) {
+			echo "\t<wp:author>";
+			echo '<wp:author_id>' . intval( $author->ID ) . '</wp:author_id>';
+			echo '<wp:author_login>' . wxr_cdata( $author->user_login ) . '</wp:author_login>';
+			echo '<wp:author_email>' . wxr_cdata( $author->user_email ) . '</wp:author_email>';
+			echo '<wp:author_display_name>' . wxr_cdata( $author->display_name ) . '</wp:author_display_name>';
+			echo '<wp:author_first_name>' . wxr_cdata( $author->first_name ) . '</wp:author_first_name>';
+			echo '<wp:author_last_name>' . wxr_cdata( $author->last_name ) . '</wp:author_last_name>';
+			echo "</wp:author>\n";
+		}
+	}
+
+	/**
+	 * Ouput all navigation menu terms
+	 *
+	 * @since 3.1.0
+	 */
+	function wxr_nav_menu_terms() {
+		$nav_menus = wp_get_nav_menus();
+		if ( empty( $nav_menus ) || ! is_array( $nav_menus ) )
+			return;
+
+		foreach ( $nav_menus as $menu ) {
+			echo "\t<wp:term>";
+			echo '<wp:term_id>' . intval( $menu->term_id ) . '</wp:term_id>';
+			echo '<wp:term_taxonomy>nav_menu</wp:term_taxonomy>';
+			echo '<wp:term_slug>' . wxr_cdata( $menu->slug ) . '</wp:term_slug>';
+			wxr_term_name( $menu );
+			echo "</wp:term>\n";
+		}
+	}
+
+	/**
+	 * Output list of taxonomy terms, in XML tag format, associated with a post
+	 *
+	 * @since 2.3.0
 	 */
 	function wxr_post_taxonomy() {
-		global $post;
+		$post = get_post();
 
-		$the_list = '';
-		$filter = 'rss';
+		$taxonomies = get_object_taxonomies( $post->post_type );
+		if ( empty( $taxonomies ) )
+			return;
+		$terms = wp_get_object_terms( $post->ID, $taxonomies );
 
-		$taxonomies = get_object_taxonomies( 'post' );
-		$terms = wp_get_post_terms( $post->ID, $taxonomies );
 		foreach ( (array) $terms as $term ) {
-			$domain = ( 'post_tag' == $term->taxonomy ) ? 'tag' : $term->taxonomy;
-			$term_name = sanitize_term_field( 'name', $term->name, $term->term_id, $term->taxonomy, $filter );
-			// Back compat.
-			if ( 'category' == $term->taxonomy )
-				$the_list .= "\n\t\t<category><![CDATA[$term_name]]></category>\n";
-			elseif ( 'post_tag' == $term->taxonomy )
-				$the_list .= "\n\t\t<category domain=\"$domain\"><![CDATA[$term_name]]></category>\n";
-			// forwards compatibility as above
-			$the_list .= "\n\t\t<category domain=\"$domain\" nicename=\"{$term->slug}\"><![CDATA[$term_name]]></category>\n";
+			echo "\t\t<category domain=\"{$term->taxonomy}\" nicename=\"{$term->slug}\">" . wxr_cdata( $term->name ) . "</category>\n";
 		}
-		echo $the_list;
 	}
 
-	echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . '"?' . ">\n";
+	/**
+	 *
+	 * @param bool   $return_me
+	 * @param string $meta_key
+	 * @return bool
+	 */
+	function wxr_filter_postmeta( $return_me, $meta_key ) {
+		if ( '_edit_lock' == $meta_key )
+			$return_me = true;
+		return $return_me;
+	}
+	add_filter( 'wxr_export_skip_postmeta', 'wxr_filter_postmeta', 10, 2 );
+
+	echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . "\" ?>\n";
 
 	?>
-<!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your blog. -->
-<!-- It contains information about your blog's posts, comments, and categories. -->
+<!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your site. -->
+<!-- It contains information about your site's posts, pages, comments, categories, and other content. -->
 <!-- You may use this file to transfer that content from one site to another. -->
-<!-- This file is not intended to serve as a complete backup of your blog. -->
-
-<!-- To import this information into a WordPress blog follow these steps. -->
-<!-- 1. Log in to that blog as an administrator. -->
-<!-- 2. Go to Tools: Import in the blog's admin panels (or Manage: Import in older versions of WordPress). -->
-<!-- 3. Choose "WordPress" from the list. -->
-<!-- 4. Upload this file using the form provided on that page. -->
-<!-- 5. You will first be asked to map the authors in this export file to users -->
-<!--    on the blog.  For each author, you may choose to map to an -->
-<!--    existing user on the blog or to create a new user -->
-<!-- 6. WordPress will then import each of the posts, comments, and categories -->
-<!--    contained in this file into your blog -->
-
-<?php the_generator( 'export' );?>
+<!-- This file is not intended to serve as a complete backup of your site. -->
+
+<!-- To import this information into a WordPress site follow these steps: -->
+<!-- 1. Log in to that site as an administrator. -->
+<!-- 2. Go to Tools: Import in the WordPress admin panel. -->
+<!-- 3. Install the "WordPress" importer from the list. -->
+<!-- 4. Activate & Run Importer. -->
+<!-- 5. Upload this file using the form provided on that page. -->
+<!-- 6. You will first be asked to map the authors in this export file to users -->
+<!--    on the site. For each author, you may choose to map to an -->
+<!--    existing user on the site or to create a new user. -->
+<!-- 7. WordPress will then import each of the posts, pages, comments, categories, etc. -->
+<!--    contained in this file into your site. -->
+
+<?php the_generator( 'export' ); ?>
 <rss version="2.0"
 	xmlns:excerpt="http://wordpress.org/export/<?php echo WXR_VERSION; ?>/excerpt/"
 	xmlns:content="http://purl.org/rss/1.0/modules/content/"
@@ -302,102 +375,163 @@ function export_wp( $args = array() ) {
 
 <channel>
 	<title><?php bloginfo_rss( 'name' ); ?></title>
-	<link><?php bloginfo_rss( 'url' ) ?></link>
-	<description><?php bloginfo_rss( 'description' ) ?></description>
-	<pubDate><?php echo mysql2date( 'D, d M Y H:i:s +0000', get_lastpostmodified( 'GMT' ), false ); ?></pubDate>
-	<generator>http://wordpress.org/?v=<?php bloginfo_rss( 'version' ); ?></generator>
-	<language><?php echo get_option( 'rss_language' ); ?></language>
+	<link><?php bloginfo_rss( 'url' ); ?></link>
+	<description><?php bloginfo_rss( 'description' ); ?></description>
+	<pubDate><?php echo date( 'D, d M Y H:i:s +0000' ); ?></pubDate>
+	<language><?php bloginfo_rss( 'language' ); ?></language>
 	<wp:wxr_version><?php echo WXR_VERSION; ?></wp:wxr_version>
 	<wp:base_site_url><?php echo wxr_site_url(); ?></wp:base_site_url>
 	<wp:base_blog_url><?php bloginfo_rss( 'url' ); ?></wp:base_blog_url>
-	<?php if ( $cats ) : foreach ( $cats as $c ) : ?>
-	<wp:category><wp:category_nicename><?php echo $c->slug; ?></wp:category_nicename><wp:category_parent><?php echo $c->parent ? $cats[$c->parent]->name : ''; ?></wp:category_parent><?php wxr_cat_name( $c ); ?><?php wxr_category_description( $c ); ?></wp:category>
-	<?php endforeach; endif; ?>
-	<?php if ( $tags ) : foreach ( $tags as $t ) : ?>
-	<wp:tag><wp:tag_slug><?php echo $t->slug; ?></wp:tag_slug><?php wxr_tag_name( $t ); ?><?php wxr_tag_description( $t ); ?></wp:tag>
-	<?php endforeach; endif; ?>
-	<?php if ( $terms ) : foreach ( $terms as $t ) : ?>
-	<wp:term><wp:term_taxonomy><?php echo $t->taxonomy; ?></wp:term_taxonomy><wp:term_slug><?php echo $t->slug; ?></wp:term_slug><wp:term_parent><?php echo $t->parent ? $custom_taxonomies[$t->parent]->name : ''; ?></wp:term_parent><?php wxr_term_name( $t ); ?><?php wxr_term_description( $t ); ?></wp:term>
-	<?php endforeach; endif; ?>
-
-	<?php do_action( 'rss2_head' ); ?>
-
-	<?php if ( $post_ids ) {
-	global $wp_query;
-	$wp_query->in_the_loop = true;  // Fake being in the loop.
 
-	// fetch 20 posts at a time rather than loading the entire table into memory
-	while ( $next_posts = array_splice( $post_ids, 0, 20 ) ) {
-	$where = "WHERE ID IN (" . join( ',', $next_posts ) . ")";
-	$posts = $wpdb->get_results( "SELECT * FROM $wpdb->posts $where ORDER BY post_date_gmt ASC" );
-
-	// Begin Loop
-	foreach ($posts as $post) {
-	setup_postdata( $post );
+<?php wxr_authors_list( $post_ids ); ?>
 
-	$is_sticky = 0;
-	if ( is_sticky( $post->ID ) )
-		$is_sticky = 1;
+<?php foreach ( $cats as $c ) : ?>
+	<wp:category><wp:term_id><?php echo intval( $c->term_id ); ?></wp:term_id><wp:category_nicename><?php echo wxr_cdata( $c->slug ); ?></wp:category_nicename><wp:category_parent><?php echo wxr_cdata( $c->parent ? $cats[$c->parent]->slug : '' ); ?></wp:category_parent><?php wxr_cat_name( $c ); ?><?php wxr_category_description( $c ); ?></wp:category>
+<?php endforeach; ?>
+<?php foreach ( $tags as $t ) : ?>
+	<wp:tag><wp:term_id><?php echo intval( $t->term_id ); ?></wp:term_id><wp:tag_slug><?php echo wxr_cdata( $t->slug ); ?></wp:tag_slug><?php wxr_tag_name( $t ); ?><?php wxr_tag_description( $t ); ?></wp:tag>
+<?php endforeach; ?>
+<?php foreach ( $terms as $t ) : ?>
+	<wp:term><wp:term_id><?php echo wxr_cdata( $t->term_id ); ?></wp:term_id><wp:term_taxonomy><?php echo wxr_cdata( $t->taxonomy ); ?></wp:term_taxonomy><wp:term_slug><?php echo wxr_cdata( $t->slug ); ?></wp:term_slug><wp:term_parent><?php echo wxr_cdata( $t->parent ? $terms[$t->parent]->slug : '' ); ?></wp:term_parent><?php wxr_term_name( $t ); ?><?php wxr_term_description( $t ); ?></wp:term>
+<?php endforeach; ?>
+<?php if ( 'all' == $args['content'] ) wxr_nav_menu_terms(); ?>
 
+	<?php
+	/** This action is documented in wp-includes/feed-rss2.php */
+	do_action( 'rss2_head' );
 	?>
+
+<?php if ( $post_ids ) {
+	/**
+	 * @global WP_Query $wp_query
+	 */
+	global $wp_query;
+
+	// Fake being in the loop.
+	$wp_query->in_the_loop = true;
+
+	// Fetch 20 posts at a time rather than loading the entire table into memory.
+	while ( $next_posts = array_splice( $post_ids, 0, 20 ) ) {
+	$where = 'WHERE ID IN (' . join( ',', $next_posts ) . ')';
+	$posts = $wpdb->get_results( "SELECT * FROM {$wpdb->posts} $where" );
+
+	// Begin Loop.
+	foreach ( $posts as $post ) {
+		setup_postdata( $post );
+		$is_sticky = is_sticky( $post->ID ) ? 1 : 0;
+?>
 	<item>
-		<title><?php echo apply_filters( 'the_title_rss', $post->post_title ); ?></title>
+		<title><?php
+			/** This filter is documented in wp-includes/feed.php */
+			echo apply_filters( 'the_title_rss', $post->post_title );
+		?></title>
 		<link><?php the_permalink_rss() ?></link>
 		<pubDate><?php echo mysql2date( 'D, d M Y H:i:s +0000', get_post_time( 'Y-m-d H:i:s', true ), false ); ?></pubDate>
-		<dc:creator><?php echo wxr_cdata( get_the_author() ); ?></dc:creator>
-		<?php wxr_post_taxonomy() ?>
-
-		<guid isPermaLink="false"><?php esc_url( the_guid() ); ?></guid>
+		<dc:creator><?php echo wxr_cdata( get_the_author_meta( 'login' ) ); ?></dc:creator>
+		<guid isPermaLink="false"><?php the_guid(); ?></guid>
 		<description></description>
-		<content:encoded><?php echo wxr_cdata( apply_filters( 'the_content_export', $post->post_content ) ); ?></content:encoded>
-		<excerpt:encoded><?php echo wxr_cdata( apply_filters( 'the_excerpt_export', $post->post_excerpt ) ); ?></excerpt:encoded>
-		<wp:post_id><?php echo $post->ID; ?></wp:post_id>
-		<wp:post_date><?php echo $post->post_date; ?></wp:post_date>
-		<wp:post_date_gmt><?php echo $post->post_date_gmt; ?></wp:post_date_gmt>
-		<wp:comment_status><?php echo $post->comment_status; ?></wp:comment_status>
-		<wp:ping_status><?php echo $post->ping_status; ?></wp:ping_status>
-		<wp:post_name><?php echo $post->post_name; ?></wp:post_name>
-		<wp:status><?php echo $post->post_status; ?></wp:status>
-		<wp:post_parent><?php echo $post->post_parent; ?></wp:post_parent>
-		<wp:menu_order><?php echo $post->menu_order; ?></wp:menu_order>
-		<wp:post_type><?php echo $post->post_type; ?></wp:post_type>
-		<wp:post_password><?php echo $post->post_password; ?></wp:post_password>
-		<wp:is_sticky><?php echo $is_sticky; ?></wp:is_sticky>
-		<?php
-		if ( $post->post_type == 'attachment' ) { ?>
-		<wp:attachment_url><?php echo wp_get_attachment_url( $post->ID ); ?></wp:attachment_url>
-		<?php } ?>
-		<?php
-		$postmeta = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->postmeta WHERE post_id = %d", $post->ID ) );
-		if ( $postmeta ) {
+		<content:encoded><?php
+			/**
+			 * Filter the post content used for WXR exports.
+			 *
+			 * @since 2.5.0
+			 *
+			 * @param string $post_content Content of the current post.
+			 */
+			echo wxr_cdata( apply_filters( 'the_content_export', $post->post_content ) );
+		?></content:encoded>
+		<excerpt:encoded><?php
+			/**
+			 * Filter the post excerpt used for WXR exports.
+			 *
+			 * @since 2.6.0
+			 *
+			 * @param string $post_excerpt Excerpt for the current post.
+			 */
+			echo wxr_cdata( apply_filters( 'the_excerpt_export', $post->post_excerpt ) );
+		?></excerpt:encoded>
+		<wp:post_id><?php echo intval( $post->ID ); ?></wp:post_id>
+		<wp:post_date><?php echo wxr_cdata( $post->post_date ); ?></wp:post_date>
+		<wp:post_date_gmt><?php echo wxr_cdata( $post->post_date_gmt ); ?></wp:post_date_gmt>
+		<wp:comment_status><?php echo wxr_cdata( $post->comment_status ); ?></wp:comment_status>
+		<wp:ping_status><?php echo wxr_cdata( $post->ping_status ); ?></wp:ping_status>
+		<wp:post_name><?php echo wxr_cdata( $post->post_name ); ?></wp:post_name>
+		<wp:status><?php echo wxr_cdata( $post->post_status ); ?></wp:status>
+		<wp:post_parent><?php echo intval( $post->post_parent ); ?></wp:post_parent>
+		<wp:menu_order><?php echo intval( $post->menu_order ); ?></wp:menu_order>
+		<wp:post_type><?php echo wxr_cdata( $post->post_type ); ?></wp:post_type>
+		<wp:post_password><?php echo wxr_cdata( $post->post_password ); ?></wp:post_password>
+		<wp:is_sticky><?php echo intval( $is_sticky ); ?></wp:is_sticky>
+<?php	if ( $post->post_type == 'attachment' ) : ?>
+		<wp:attachment_url><?php echo wxr_cdata( wp_get_attachment_url( $post->ID ) ); ?></wp:attachment_url>
+<?php 	endif; ?>
+<?php 	wxr_post_taxonomy(); ?>
+<?php	$postmeta = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->postmeta WHERE post_id = %d", $post->ID ) );
+		foreach ( $postmeta as $meta ) :
+			/**
+			 * Filter whether to selectively skip post meta used for WXR exports.
+			 *
+			 * Returning a truthy value to the filter will skip the current meta
+			 * object from being exported.
+			 *
+			 * @since 3.3.0
+			 *
+			 * @param bool   $skip     Whether to skip the current post meta. Default false.
+			 * @param string $meta_key Current meta key.
+			 * @param object $meta     Current meta object.
+			 */
+			if ( apply_filters( 'wxr_export_skip_postmeta', false, $meta->meta_key, $meta ) )
+				continue;
 		?>
-		<?php foreach( $postmeta as $meta ) { ?>
 		<wp:postmeta>
-		<wp:meta_key><?php echo $meta->meta_key; ?></wp:meta_key>
-		<wp:meta_value><?php echo wxr_cdata( $meta->meta_value ); ?></wp:meta_value>
+			<wp:meta_key><?php echo wxr_cdata( $meta->meta_key ); ?></wp:meta_key>
+			<wp:meta_value><?php echo wxr_cdata( $meta->meta_value ); ?></wp:meta_value>
 		</wp:postmeta>
-		<?php } ?>
-		<?php } ?>
-		<?php
-		$comments = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d", $post->ID ) );
-		if ( $comments ) { foreach ( $comments as $c ) { ?>
+<?php	endforeach;
+
+		$_comments = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_approved <> 'spam'", $post->ID ) );
+		$comments = array_map( 'get_comment', $_comments );
+		foreach ( $comments as $c ) : ?>
 		<wp:comment>
-		<wp:comment_id><?php echo $c->comment_ID; ?></wp:comment_id>
-		<wp:comment_author><?php echo wxr_cdata( $c->comment_author ); ?></wp:comment_author>
-		<wp:comment_author_email><?php echo $c->comment_author_email; ?></wp:comment_author_email>
-		<wp:comment_author_url><?php echo esc_url_raw( $c->comment_author_url ); ?></wp:comment_author_url>
-		<wp:comment_author_IP><?php echo $c->comment_author_IP; ?></wp:comment_author_IP>
-		<wp:comment_date><?php echo $c->comment_date; ?></wp:comment_date>
-		<wp:comment_date_gmt><?php echo $c->comment_date_gmt; ?></wp:comment_date_gmt>
-		<wp:comment_content><?php echo wxr_cdata( $c->comment_content ) ?></wp:comment_content>
-		<wp:comment_approved><?php echo $c->comment_approved; ?></wp:comment_approved>
-		<wp:comment_type><?php echo $c->comment_type; ?></wp:comment_type>
-		<wp:comment_parent><?php echo $c->comment_parent; ?></wp:comment_parent>
-		<wp:comment_user_id><?php echo $c->user_id; ?></wp:comment_user_id>
+			<wp:comment_id><?php echo intval( $c->comment_ID ); ?></wp:comment_id>
+			<wp:comment_author><?php echo wxr_cdata( $c->comment_author ); ?></wp:comment_author>
+			<wp:comment_author_email><?php echo wxr_cdata( $c->comment_author_email ); ?></wp:comment_author_email>
+			<wp:comment_author_url><?php echo esc_url_raw( $c->comment_author_url ); ?></wp:comment_author_url>
+			<wp:comment_author_IP><?php echo wxr_cdata( $c->comment_author_IP ); ?></wp:comment_author_IP>
+			<wp:comment_date><?php echo wxr_cdata( $c->comment_date ); ?></wp:comment_date>
+			<wp:comment_date_gmt><?php echo wxr_cdata( $c->comment_date_gmt ); ?></wp:comment_date_gmt>
+			<wp:comment_content><?php echo wxr_cdata( $c->comment_content ) ?></wp:comment_content>
+			<wp:comment_approved><?php echo wxr_cdata( $c->comment_approved ); ?></wp:comment_approved>
+			<wp:comment_type><?php echo wxr_cdata( $c->comment_type ); ?></wp:comment_type>
+			<wp:comment_parent><?php echo intval( $c->comment_parent ); ?></wp:comment_parent>
+			<wp:comment_user_id><?php echo intval( $c->user_id ); ?></wp:comment_user_id>
+<?php		$c_meta = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->commentmeta WHERE comment_id = %d", $c->comment_ID ) );
+			foreach ( $c_meta as $meta ) :
+				/**
+				 * Filter whether to selectively skip comment meta used for WXR exports.
+				 *
+				 * Returning a truthy value to the filter will skip the current meta
+				 * object from being exported.
+				 *
+				 * @since 4.0.0
+				 *
+				 * @param bool   $skip     Whether to skip the current comment meta. Default false.
+				 * @param string $meta_key Current meta key.
+				 * @param object $meta     Current meta object.
+				 */
+				if ( apply_filters( 'wxr_export_skip_commentmeta', false, $meta->meta_key, $meta ) ) {
+					continue;
+				}
+			?>
+			<wp:commentmeta>
+				<wp:meta_key><?php echo wxr_cdata( $meta->meta_key ); ?></wp:meta_key>
+				<wp:meta_value><?php echo wxr_cdata( $meta->meta_value ); ?></wp:meta_value>
+			</wp:commentmeta>
+<?php		endforeach; ?>
 		</wp:comment>
-		<?php } } ?>
+<?php	endforeach; ?>
 	</item>
-	<?php
+<?php
 	}
 	}
 } ?>
@@ -405,5 +539,3 @@ function export_wp( $args = array() ) {
 </rss>
 <?php
 }
-
-?>