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 '
';
			if ( 'SimpleXML_parse_error' == $result->get_error_code() ) {
				foreach  ( $result->get_error_data() as $error )
					echo $error->line . ':' . $error->column . ' ' . esc_html( $error->message ) . "\n";
			} else if ( 'XML_parse_error' == $result->get_error_code() ) {
				$error = $result->get_error_data();
				echo $error[0] . ':' . $error[1] . ' ' . esc_html( $error[2] );
			}
			echo '
'; echo '

' . __( 'There was an error when reading this WXR file', 'wordpress-importer' ) . '
'; echo __( 'Details are shown above. The importer will now try again with a different parser...', 'wordpress-importer' ) . '

'; } // 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. */ 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'] ); $categories[] = 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 ( $xml->xpath('/rss/channel/wp:tag') as $term_arr ) { $t = $term_arr->children( $namespaces['wp'] ); $tags[] = 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 ( $xml->xpath('/rss/channel/wp:term') as $term_arr ) { $t = $term_arr->children( $namespaces['wp'] ); $terms[] = 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 ); } // 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. */ 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; $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. */ class WXR_Parser_Regex { var $authors = array(); var $posts = array(); var $categories = array(); var $tags = array(); var $terms = array(); var $base_url = ''; function WXR_Parser_Regex() { $this->__construct(); } function __construct() { $this->has_gzip = is_callable( 'gzopen' ); } function parse( $file ) { $wxr_version = $in_post = false; $fp = $this->fopen( $file, 'r' ); if ( $fp ) { while ( ! $this->feof( $fp ) ) { $importline = rtrim( $this->fgets( $fp ) ); if ( ! $wxr_version && preg_match( '|(\d+\.\d+)|', $importline, $version ) ) $wxr_version = $version[1]; if ( false !== strpos( $importline, '' ) ) { preg_match( '|(.*?)|is', $importline, $url ); $this->base_url = $url[1]; continue; } if ( false !== strpos( $importline, '' ) ) { preg_match( '|(.*?)|is', $importline, $category ); $this->categories[] = $this->process_category( $category[1] ); continue; } if ( false !== strpos( $importline, '' ) ) { preg_match( '|(.*?)|is', $importline, $tag ); $this->tags[] = $this->process_tag( $tag[1] ); continue; } if ( false !== strpos( $importline, '' ) ) { preg_match( '|(.*?)|is', $importline, $term ); $this->terms[] = $this->process_term( $term[1] ); continue; } if ( false !== strpos( $importline, '' ) ) { preg_match( '|(.*?)|is', $importline, $author ); $a = $this->process_author( $author[1] ); $this->authors[$a['author_login']] = $a; continue; } if ( false !== strpos( $importline, '' ) ) { $post = ''; $in_post = true; continue; } if ( false !== strpos( $importline, '' ) ) { $in_post = false; $this->posts[] = $this->process_post( $post ); continue; } if ( $in_post ) { $post .= $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.*?>(.*?)|is", $string, $return ); if ( isset( $return[1] ) ) { if ( substr( $return[1], 0, 9 ) == '' ) !== false ) { preg_match_all( '||s', $return[1], $matches ); $return = ''; foreach( $matches[1] as $match ) $return .= $match; } else { $return = preg_replace( '|^$|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( '
', '
', $post_excerpt ); $post_excerpt = str_replace( '
', '
', $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( '
', '
', $post_content ); $post_content = str_replace( '
', '
', $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( '|(.+?)|is', $post, $terms, PREG_SET_ORDER ); foreach ( $terms as $t ) { $post_terms[] = array( 'slug' => $t[2], 'domain' => $t[1], 'name' => str_replace( array( '' ), '', $t[3] ), ); } if ( ! empty( $post_terms ) ) $postdata['terms'] = $post_terms; preg_match_all( '|(.+?)|is', $post, $comments ); $comments = $comments[1]; if ( $comments ) { foreach ( $comments as $comment ) { preg_match_all( '|(.+?)|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( '|(.+?)|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 ); } }