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<?php
/**
 * WordPress eXtended RSS file parser implementations
 *
 * @package WordPress
 * @subpackage Importer
 */

/**
 * WordPress Importer class for managing parsing of WXR files.
 */
if ( ! class_exists( 'WXR_Parser' ) )
{
	class WXR_Parser {
		function parse( $file ) {
			// Attempt to use proper XML parsers first
			if ( extension_loaded( 'simplexml' ) ) {
				$parser = new WXR_Parser_SimpleXML;
				$result = $parser->parse( $file );

				// If SimpleXML succeeds or this is an invalid WXR file then return the results
				if ( ! is_wp_error( $result ) || 'SimpleXML_parse_error' != $result->get_error_code() )
					return $result;
			} else if ( extension_loaded( 'xml' ) ) {
				$parser = new WXR_Parser_XML;
				$result = $parser->parse( $file );

				// If XMLParser succeeds or this is an invalid WXR file then return the results
				if ( ! is_wp_error( $result ) || 'XML_parse_error' != $result->get_error_code() )
					return $result;
			}

			// We have a malformed XML file, so display the error and fallthrough to regex
			if ( isset($result) && defined('IMPORT_DEBUG') && IMPORT_DEBUG ) {
				echo '<pre>';
				if ( 'SimpleXML_parse_error' == $result->get_error_code() ) {
					foreach  ( $result->get_error_data() as $error )
						echo esc_attr($error->line) . ':' . esc_attr($error->column) . ' ' . esc_html( $error->message ) . "\n";
				} else if ( 'XML_parse_error' == $result->get_error_code() ) {
					$error = $result->get_error_data();
					echo esc_attr($error[0]) . ':' . esc_attr($error[1]) . ' ' . esc_html( $error[2] );
				}
				echo '</pre>';
				echo '<p><strong>' . __( 'There was an error when reading this WXR file', 'wordpress-importer' ) . '</strong><br />';
				echo __( 'Details are shown above. The importer will now try again with a different parser...', 'wordpress-importer' ) . '</p>';
			}

			// use regular expressions if nothing else available or this is bad XML
			$parser = new WXR_Parser_Regex;
			return $parser->parse( $file );
		}
	}
}

/**
 * WXR Parser that makes use of the SimpleXML PHP extension.
 */
if ( ! class_exists( 'WXR_Parser_SimpleXML' ) )
{
	class WXR_Parser_SimpleXML {
		function parse( $file ) {
			$authors = $posts = $categories = $tags = $terms = array();

			$internal_errors = libxml_use_internal_errors(true);

			$dom = new DOMDocument;
			$old_value = null;
			if ( function_exists( 'libxml_disable_entity_loader' ) ) {
				$old_value = libxml_disable_entity_loader( true );
			}
			$success = $dom->loadXML( file_get_contents( $file ) );
			if ( ! is_null( $old_value ) ) {
				libxml_disable_entity_loader( $old_value );
			}

			if ( ! $success || isset( $dom->doctype ) ) {
				return new WP_Error( 'SimpleXML_parse_error', __( 'There was an error when reading this WXR file', 'wordpress-importer' ), libxml_get_errors() );
			}

			$xml = simplexml_import_dom( $dom );
			unset( $dom );

			// halt if loading produces an error
			if ( ! $xml )
				return new WP_Error( 'SimpleXML_parse_error', __( 'There was an error when reading this WXR file', 'wordpress-importer' ), libxml_get_errors() );

			$wxr_version = $xml->xpath('/rss/channel/wp:wxr_version');
			if ( ! $wxr_version )
				return new WP_Error( 'WXR_parse_error', __( 'This does not appear to be a WXR file, missing/invalid WXR version number', 'wordpress-importer' ) );

			$wxr_version = (string) trim( $wxr_version[0] );
			// confirm that we are dealing with the correct file format
			if ( ! preg_match( '/^\d+\.\d+$/', $wxr_version ) )
				return new WP_Error( 'WXR_parse_error', __( 'This does not appear to be a WXR file, missing/invalid WXR version number', 'wordpress-importer' ) );

			$base_url = $xml->xpath('/rss/channel/wp:base_site_url');
			$base_url = (string) trim( $base_url[0] );

			$namespaces = $xml->getDocNamespaces();
			if ( ! isset( $namespaces['wp'] ) )
				$namespaces['wp'] = 'http://wordpress.org/export/1.1/';
			if ( ! isset( $namespaces['excerpt'] ) )
				$namespaces['excerpt'] = 'http://wordpress.org/export/1.1/excerpt/';

			// grab authors
			foreach ( $xml->xpath('/rss/channel/wp:author') as $author_arr ) {
				$a = $author_arr->children( $namespaces['wp'] );
				$login = (string) $a->author_login;
				$authors[$login] = array(
					'author_id' => (int) $a->author_id,
					'author_login' => $login,
					'author_email' => (string) $a->author_email,
					'author_display_name' => (string) $a->author_display_name,
					'author_first_name' => (string) $a->author_first_name,
					'author_last_name' => (string) $a->author_last_name
				);
			}

			// grab cats, tags and terms
			foreach ( $xml->xpath('/rss/channel/wp:category') as $term_arr ) {
				$t = $term_arr->children( $namespaces['wp'] );
			$category = array(
					'term_id' => (int) $t->term_id,
					'category_nicename' => (string) $t->category_nicename,
					'category_parent' => (string) $t->category_parent,
					'cat_name' => (string) $t->cat_name,
					'category_description' => (string) $t->category_description
			);
			foreach ( $t->termmeta as $meta ) {
				$category['termmeta'][] = array(
					'key' => (string) $meta->meta_key,
					'value' => (string) $meta->meta_value
				);
			}
			$categories[] = $category;
		}
			foreach ( $xml->xpath('/rss/channel/wp:tag') as $term_arr ) {
				$t = $term_arr->children( $namespaces['wp'] );
			$tag = array(
					'term_id' => (int) $t->term_id,
					'tag_slug' => (string) $t->tag_slug,
					'tag_name' => (string) $t->tag_name,
					'tag_description' => (string) $t->tag_description
			);
			foreach ( $t->termmeta as $meta ) {
				$tag['termmeta'][] = array(
					'key' => (string) $meta->meta_key,
					'value' => (string) $meta->meta_value
				);
			}
			$tags[] = $tag;
		}
			foreach ( $xml->xpath('/rss/channel/wp:term') as $term_arr ) {
			$t = $term_arr->children( $namespaces['wp'] );
			$term = array(
					'term_id' => (int) $t->term_id,
					'term_taxonomy' => (string) $t->term_taxonomy,
					'slug' => (string) $t->term_slug,
					'term_parent' => (string) $t->term_parent,
					'term_name' => (string) $t->term_name,
					'term_description' => (string) $t->term_description
			);
			foreach ( $t->termmeta as $meta ) {
				$term['termmeta'][] = array(
					'key' => (string) $meta->meta_key,
					'value' => (string) $meta->meta_value
				);
			}
			$terms[] = $term;
		}
			// grab posts
			foreach ( $xml->channel->item as $item ) {
				$post = array(
					'post_title' => (string) $item->title,
					'guid' => (string) $item->guid,
				);

				$dc = $item->children( 'http://purl.org/dc/elements/1.1/' );
				$post['post_author'] = (string) $dc->creator;

				$content = $item->children( 'http://purl.org/rss/1.0/modules/content/' );
				$excerpt = $item->children( $namespaces['excerpt'] );
				$post['post_content'] = (string) $content->encoded;
				$post['post_excerpt'] = (string) $excerpt->encoded;

				$wp = $item->children( $namespaces['wp'] );
				$post['post_id'] = (int) $wp->post_id;
				$post['post_date'] = (string) $wp->post_date;
				$post['post_date_gmt'] = (string) $wp->post_date_gmt;
				$post['comment_status'] = (string) $wp->comment_status;
				$post['ping_status'] = (string) $wp->ping_status;
				$post['post_name'] = (string) $wp->post_name;
				$post['status'] = (string) $wp->status;
				$post['post_parent'] = (int) $wp->post_parent;
				$post['menu_order'] = (int) $wp->menu_order;
				$post['post_type'] = (string) $wp->post_type;
				$post['post_password'] = (string) $wp->post_password;
				$post['is_sticky'] = (int) $wp->is_sticky;

				if ( isset($wp->attachment_url) )
					$post['attachment_url'] = (string) $wp->attachment_url;

				foreach ( $item->category as $c ) {
					$att = $c->attributes();
					if ( isset( $att['nicename'] ) )
						$post['terms'][] = array(
							'name' => (string) $c,
							'slug' => (string) $att['nicename'],
							'domain' => (string) $att['domain']
						);
				}

				foreach ( $wp->postmeta as $meta ) {
					$post['postmeta'][] = array(
						'key' => (string) $meta->meta_key,
						'value' => (string) $meta->meta_value
					);
				}

				foreach ( $wp->comment as $comment ) {
					$meta = array();
					if ( isset( $comment->commentmeta ) ) {
						foreach ( $comment->commentmeta as $m ) {
							$meta[] = array(
								'key' => (string) $m->meta_key,
								'value' => (string) $m->meta_value
							);
						}
					}

					$post['comments'][] = array(
						'comment_id' => (int) $comment->comment_id,
						'comment_author' => (string) $comment->comment_author,
						'comment_author_email' => (string) $comment->comment_author_email,
						'comment_author_IP' => (string) $comment->comment_author_IP,
						'comment_author_url' => (string) $comment->comment_author_url,
						'comment_date' => (string) $comment->comment_date,
						'comment_date_gmt' => (string) $comment->comment_date_gmt,
						'comment_content' => (string) $comment->comment_content,
						'comment_approved' => (string) $comment->comment_approved,
						'comment_type' => (string) $comment->comment_type,
						'comment_parent' => (string) $comment->comment_parent,
						'comment_user_id' => (int) $comment->comment_user_id,
						'commentmeta' => $meta,
					);
				}

				$posts[] = $post;
			}

			return array(
				'authors' => $authors,
				'posts' => $posts,
				'categories' => $categories,
				'tags' => $tags,
				'terms' => $terms,
				'base_url' => $base_url,
				'version' => $wxr_version
			);
		}
	}
}

/**
 * WXR Parser that makes use of the XML Parser PHP extension.
 */
if ( ! class_exists( 'WXR_Parser_XML' ) )
{
	class WXR_Parser_XML {
		var $wp_tags = array(
			'wp:post_id', 'wp:post_date', 'wp:post_date_gmt', 'wp:comment_status', 'wp:ping_status', 'wp:attachment_url',
			'wp:status', 'wp:post_name', 'wp:post_parent', 'wp:menu_order', 'wp:post_type', 'wp:post_password',
			'wp:is_sticky', 'wp:term_id', 'wp:category_nicename', 'wp:category_parent', 'wp:cat_name', 'wp:category_description',
			'wp:tag_slug', 'wp:tag_name', 'wp:tag_description', 'wp:term_taxonomy', 'wp:term_parent',
			'wp:term_name', 'wp:term_description', 'wp:author_id', 'wp:author_login', 'wp:author_email', 'wp:author_display_name',
			'wp:author_first_name', 'wp:author_last_name',
		);
		var $wp_sub_tags = array(
			'wp:comment_id', 'wp:comment_author', 'wp:comment_author_email', 'wp:comment_author_url',
			'wp:comment_author_IP',	'wp:comment_date', 'wp:comment_date_gmt', 'wp:comment_content',
			'wp:comment_approved', 'wp:comment_type', 'wp:comment_parent', 'wp:comment_user_id',
		);

		function parse( $file ) {
			$this->wxr_version = $this->in_post = $this->cdata = $this->data = $this->sub_data = $this->in_tag = $this->in_sub_tag = false;
			$this->authors = $this->posts = $this->term = $this->category = $this->tag = array();

			$xml = xml_parser_create( 'UTF-8' );
			xml_parser_set_option( $xml, XML_OPTION_SKIP_WHITE, 1 );
			xml_parser_set_option( $xml, XML_OPTION_CASE_FOLDING, 0 );
			xml_set_object( $xml, $this );
			xml_set_character_data_handler( $xml, 'cdata' );
			xml_set_element_handler( $xml, 'tag_open', 'tag_close' );

			if ( ! xml_parse( $xml, file_get_contents( $file ), true ) ) {
				$current_line = xml_get_current_line_number( $xml );
				$current_column = xml_get_current_column_number( $xml );
				$error_code = xml_get_error_code( $xml );
				$error_string = xml_error_string( $error_code );
				return new WP_Error( 'XML_parse_error', 'There was an error when reading this WXR file', array( $current_line, $current_column, $error_string ) );
			}
			xml_parser_free( $xml );

			if ( ! preg_match( '/^\d+\.\d+$/', $this->wxr_version ) )
				return new WP_Error( 'WXR_parse_error', __( 'This does not appear to be a WXR file, missing/invalid WXR version number', 'wordpress-importer' ) );

			return array(
				'authors' => $this->authors,
				'posts' => $this->posts,
				'categories' => $this->category,
				'tags' => $this->tag,
				'terms' => $this->term,
				'base_url' => $this->base_url,
				'version' => $this->wxr_version
			);
		}

		function tag_open( $parse, $tag, $attr ) {
			if ( in_array( $tag, $this->wp_tags ) ) {
				$this->in_tag = substr( $tag, 3 );
				return;
			}

			if ( in_array( $tag, $this->wp_sub_tags ) ) {
				$this->in_sub_tag = substr( $tag, 3 );
				return;
			}

			switch ( $tag ) {
				case 'category':
					if ( isset($attr['domain'], $attr['nicename']) ) {
						$this->sub_data['domain'] = $attr['domain'];
						$this->sub_data['slug'] = $attr['nicename'];
					}
					break;
				case 'item': $this->in_post = true;
				case 'title': if ( $this->in_post ) $this->in_tag = 'post_title'; break;
				case 'guid': $this->in_tag = 'guid'; break;
				case 'dc:creator': $this->in_tag = 'post_author'; break;
				case 'content:encoded': $this->in_tag = 'post_content'; break;
				case 'excerpt:encoded': $this->in_tag = 'post_excerpt'; break;

				case 'wp:term_slug': $this->in_tag = 'slug'; break;
				case 'wp:meta_key': $this->in_sub_tag = 'key'; break;
				case 'wp:meta_value': $this->in_sub_tag = 'value'; break;
			}
		}

		function cdata( $parser, $cdata ) {
			if ( ! trim( $cdata ) )
				return;

		if ( false !== $this->in_tag || false !== $this->in_sub_tag ) {
			$this->cdata .= $cdata;
		} else {
			$this->cdata .= trim( $cdata );
		}
	}
		function tag_close( $parser, $tag ) {
			switch ( $tag ) {
				case 'wp:comment':
					unset( $this->sub_data['key'], $this->sub_data['value'] ); // remove meta sub_data
					if ( ! empty( $this->sub_data ) )
						$this->data['comments'][] = $this->sub_data;
					$this->sub_data = false;
					break;
				case 'wp:commentmeta':
					$this->sub_data['commentmeta'][] = array(
						'key' => $this->sub_data['key'],
						'value' => $this->sub_data['value']
					);
					break;
				case 'category':
					if ( ! empty( $this->sub_data ) ) {
						$this->sub_data['name'] = $this->cdata;
						$this->data['terms'][] = $this->sub_data;
					}
					$this->sub_data = false;
					break;
				case 'wp:postmeta':
					if ( ! empty( $this->sub_data ) )
						$this->data['postmeta'][] = $this->sub_data;
					$this->sub_data = false;
					break;
				case 'item':
					$this->posts[] = $this->data;
					$this->data = false;
					break;
				case 'wp:category':
				case 'wp:tag':
				case 'wp:term':
					$n = substr( $tag, 3 );
					array_push( $this->$n, $this->data );
					$this->data = false;
					break;
				case 'wp:author':
					if ( ! empty($this->data['author_login']) )
						$this->authors[$this->data['author_login']] = $this->data;
					$this->data = false;
					break;
				case 'wp:base_site_url':
					$this->base_url = $this->cdata;
					break;
				case 'wp:wxr_version':
					$this->wxr_version = $this->cdata;
					break;

				default:
					if ( $this->in_sub_tag ) {
						$this->sub_data[$this->in_sub_tag] = ! empty( $this->cdata ) ? $this->cdata : '';
						$this->in_sub_tag = false;
					} else if ( $this->in_tag ) {
						$this->data[$this->in_tag] = ! empty( $this->cdata ) ? $this->cdata : '';
						$this->in_tag = false;
					}
			}

			$this->cdata = false;
		}
	}
}

/**
 * WXR Parser that uses regular expressions. Fallback for installs without an XML parser.
 */
if ( ! class_exists( 'WXR_Parser_Regex' ) )
{
	class WXR_Parser_Regex {
		var $authors = array();
		var $posts = array();
		var $categories = array();
		var $tags = array();
		var $terms = array();
		var $base_url = '';


		function __construct() {
			$this->has_gzip = is_callable( 'gzopen' );
		}

		function parse( $file ) {
		$wxr_version = $in_multiline = false;

		$multiline_content = '';
		$multiline_tags = array(
			'item'        => array( 'posts', array( $this, 'process_post' ) ),
			'wp:category' => array( 'categories', array( $this, 'process_category' ) ),
			'wp:tag'      => array( 'tags', array( $this, 'process_tag' ) ),
			'wp:term'     => array( 'terms', array( $this, 'process_term' ) ),
		);
			$fp = $this->fopen( $file, 'r' );
			if ( $fp ) {
				while ( ! $this->feof( $fp ) ) {
					$importline = rtrim( $this->fgets( $fp ) );

					if ( ! $wxr_version && preg_match( '|<wp:wxr_version>(\d+\.\d+)</wp:wxr_version>|', $importline, $version ) )
						$wxr_version = $version[1];

					if ( false !== strpos( $importline, '<wp:base_site_url>' ) ) {
						preg_match( '|<wp:base_site_url>(.*?)</wp:base_site_url>|is', $importline, $url );
						$this->base_url = $url[1];
						continue;
					}

					if ( false !== strpos( $importline, '<wp:author>' ) ) {
						preg_match( '|<wp:author>(.*?)</wp:author>|is', $importline, $author );
						$a = $this->process_author( $author[1] );
						$this->authors[$a['author_login']] = $a;
						continue;
					}
				foreach ( $multiline_tags as $tag => $handler ) {
					// Handle multi-line tags on a singular line
					if ( preg_match( '|<' . $tag . '>(.*?)</' . $tag . '>|is', $importline, $matches ) ) {
						$this->{$handler[0]}[] = call_user_func( $handler[1], $matches[1] );
					} elseif ( false !== ( $pos = strpos( $importline, "<$tag>" ) ) ) {
						// Take note of any content after the opening tag
						$multiline_content = trim( substr( $importline, $pos + strlen( $tag ) + 2 ) );

						// We don't want to have this line added to `$is_multiline` below.
						$importline        = '';
						$in_multiline      = $tag;

					} elseif ( false !== ( $pos = strpos( $importline, "</$tag>" ) ) ) {
						$in_multiline          = false;
						$multiline_content    .= trim( substr( $importline, 0, $pos ) );
						$this->{$handler[0]}[] = call_user_func( $handler[1], $multiline_content );
					}
					}

				if ( $in_multiline && $importline ) {
					$multiline_content .= $importline . "\n";
					}
				}

				$this->fclose($fp);
			}

			if ( ! $wxr_version )
				return new WP_Error( 'WXR_parse_error', __( 'This does not appear to be a WXR file, missing/invalid WXR version number', 'wordpress-importer' ) );

			return array(
				'authors' => $this->authors,
				'posts' => $this->posts,
				'categories' => $this->categories,
				'tags' => $this->tags,
				'terms' => $this->terms,
				'base_url' => $this->base_url,
				'version' => $wxr_version
			);
		}

		function get_tag( $string, $tag ) {
			preg_match( "|<$tag.*?>(.*?)</$tag>|is", $string, $return );
			if ( isset( $return[1] ) ) {
				if ( substr( $return[1], 0, 9 ) == '<![CDATA[' ) {
					if ( strpos( $return[1], ']]]]><![CDATA[>' ) !== false ) {
						preg_match_all( '|<!\[CDATA\[(.*?)\]\]>|s', $return[1], $matches );
						$return = '';
						foreach( $matches[1] as $match )
							$return .= $match;
					} else {
						$return = preg_replace( '|^<!\[CDATA\[(.*)\]\]>$|s', '$1', $return[1] );
					}
				} else {
					$return = $return[1];
				}
			} else {
				$return = '';
			}
			return $return;
		}

		function process_category( $c ) {
			return array(
				'term_id' => $this->get_tag( $c, 'wp:term_id' ),
				'cat_name' => $this->get_tag( $c, 'wp:cat_name' ),
				'category_nicename'	=> $this->get_tag( $c, 'wp:category_nicename' ),
				'category_parent' => $this->get_tag( $c, 'wp:category_parent' ),
				'category_description' => $this->get_tag( $c, 'wp:category_description' ),
			);
		}

		function process_tag( $t ) {
			return array(
				'term_id' => $this->get_tag( $t, 'wp:term_id' ),
				'tag_name' => $this->get_tag( $t, 'wp:tag_name' ),
				'tag_slug' => $this->get_tag( $t, 'wp:tag_slug' ),
				'tag_description' => $this->get_tag( $t, 'wp:tag_description' ),
			);
		}

		function process_term( $t ) {
			return array(
				'term_id' => $this->get_tag( $t, 'wp:term_id' ),
				'term_taxonomy' => $this->get_tag( $t, 'wp:term_taxonomy' ),
				'slug' => $this->get_tag( $t, 'wp:term_slug' ),
				'term_parent' => $this->get_tag( $t, 'wp:term_parent' ),
				'term_name' => $this->get_tag( $t, 'wp:term_name' ),
				'term_description' => $this->get_tag( $t, 'wp:term_description' ),
			);
		}

		function process_author( $a ) {
			return array(
				'author_id' => $this->get_tag( $a, 'wp:author_id' ),
				'author_login' => $this->get_tag( $a, 'wp:author_login' ),
				'author_email' => $this->get_tag( $a, 'wp:author_email' ),
				'author_display_name' => $this->get_tag( $a, 'wp:author_display_name' ),
				'author_first_name' => $this->get_tag( $a, 'wp:author_first_name' ),
				'author_last_name' => $this->get_tag( $a, 'wp:author_last_name' ),
			);
		}

		function process_post( $post ) {
			$post_id        = $this->get_tag( $post, 'wp:post_id' );
			$post_title     = $this->get_tag( $post, 'title' );
			$post_date      = $this->get_tag( $post, 'wp:post_date' );
			$post_date_gmt  = $this->get_tag( $post, 'wp:post_date_gmt' );
			$comment_status = $this->get_tag( $post, 'wp:comment_status' );
			$ping_status    = $this->get_tag( $post, 'wp:ping_status' );
			$status         = $this->get_tag( $post, 'wp:status' );
			$post_name      = $this->get_tag( $post, 'wp:post_name' );
			$post_parent    = $this->get_tag( $post, 'wp:post_parent' );
			$menu_order     = $this->get_tag( $post, 'wp:menu_order' );
			$post_type      = $this->get_tag( $post, 'wp:post_type' );
			$post_password  = $this->get_tag( $post, 'wp:post_password' );
			$is_sticky      = $this->get_tag( $post, 'wp:is_sticky' );
			$guid           = $this->get_tag( $post, 'guid' );
			$post_author    = $this->get_tag( $post, 'dc:creator' );

			$post_excerpt = $this->get_tag( $post, 'excerpt:encoded' );
			$post_excerpt = preg_replace_callback( '|<(/?[A-Z]+)|', array( &$this, '_normalize_tag' ), $post_excerpt );
			$post_excerpt = str_replace( '<br>', '<br />', $post_excerpt );
			$post_excerpt = str_replace( '<hr>', '<hr />', $post_excerpt );

			$post_content = $this->get_tag( $post, 'content:encoded' );
			$post_content = preg_replace_callback( '|<(/?[A-Z]+)|', array( &$this, '_normalize_tag' ), $post_content );
			$post_content = str_replace( '<br>', '<br />', $post_content );
			$post_content = str_replace( '<hr>', '<hr />', $post_content );

			$postdata = compact( 'post_id', 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_excerpt',
				'post_title', 'status', 'post_name', 'comment_status', 'ping_status', 'guid', 'post_parent',
				'menu_order', 'post_type', 'post_password', 'is_sticky'
			);

			$attachment_url = $this->get_tag( $post, 'wp:attachment_url' );
			if ( $attachment_url )
				$postdata['attachment_url'] = $attachment_url;

			preg_match_all( '|<category domain="([^"]+?)" nicename="([^"]+?)">(.+?)</category>|is', $post, $terms, PREG_SET_ORDER );
			foreach ( $terms as $t ) {
				$post_terms[] = array(
					'slug' => $t[2],
					'domain' => $t[1],
					'name' => str_replace( array( '<![CDATA[', ']]>' ), '', $t[3] ),
				);
			}
			if ( ! empty( $post_terms ) ) $postdata['terms'] = $post_terms;

			preg_match_all( '|<wp:comment>(.+?)</wp:comment>|is', $post, $comments );
			$comments = $comments[1];
			if ( $comments ) {
				foreach ( $comments as $comment ) {
					preg_match_all( '|<wp:commentmeta>(.+?)</wp:commentmeta>|is', $comment, $commentmeta );
					$commentmeta = $commentmeta[1];
					$c_meta = array();
					foreach ( $commentmeta as $m ) {
						$c_meta[] = array(
							'key' => $this->get_tag( $m, 'wp:meta_key' ),
							'value' => $this->get_tag( $m, 'wp:meta_value' ),
						);
					}

					$post_comments[] = array(
						'comment_id' => $this->get_tag( $comment, 'wp:comment_id' ),
						'comment_author' => $this->get_tag( $comment, 'wp:comment_author' ),
						'comment_author_email' => $this->get_tag( $comment, 'wp:comment_author_email' ),
						'comment_author_IP' => $this->get_tag( $comment, 'wp:comment_author_IP' ),
						'comment_author_url' => $this->get_tag( $comment, 'wp:comment_author_url' ),
						'comment_date' => $this->get_tag( $comment, 'wp:comment_date' ),
						'comment_date_gmt' => $this->get_tag( $comment, 'wp:comment_date_gmt' ),
						'comment_content' => $this->get_tag( $comment, 'wp:comment_content' ),
						'comment_approved' => $this->get_tag( $comment, 'wp:comment_approved' ),
						'comment_type' => $this->get_tag( $comment, 'wp:comment_type' ),
						'comment_parent' => $this->get_tag( $comment, 'wp:comment_parent' ),
						'comment_user_id' => $this->get_tag( $comment, 'wp:comment_user_id' ),
						'commentmeta' => $c_meta,
					);
				}
			}
			if ( ! empty( $post_comments ) ) $postdata['comments'] = $post_comments;

			preg_match_all( '|<wp:postmeta>(.+?)</wp:postmeta>|is', $post, $postmeta );
			$postmeta = $postmeta[1];
			if ( $postmeta ) {
				foreach ( $postmeta as $p ) {
					$post_postmeta[] = array(
						'key' => $this->get_tag( $p, 'wp:meta_key' ),
						'value' => $this->get_tag( $p, 'wp:meta_value' ),
					);
				}
			}
			if ( ! empty( $post_postmeta ) ) $postdata['postmeta'] = $post_postmeta;

			return $postdata;
		}

		function _normalize_tag( $matches ) {
			return '<' . strtolower( $matches[1] );
		}

		function fopen( $filename, $mode = 'r' ) {
			if ( $this->has_gzip )
				return gzopen( $filename, $mode );
			return fopen( $filename, $mode );
		}

		function feof( $fp ) {
			if ( $this->has_gzip )
				return gzeof( $fp );
			return feof( $fp );
		}

		function fgets( $fp, $len = 8192 ) {
			if ( $this->has_gzip )
				return gzgets( $fp, $len );
			return fgets( $fp, $len );
		}

		function fclose( $fp ) {
			if ( $this->has_gzip )
				return gzclose( $fp );
			return fclose( $fp );
		}
	}
}