242 lines
8.0 KiB
PHP
242 lines
8.0 KiB
PHP
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<?php
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/**
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* WordPress eXtended RSS file parser implementations
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*
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* @package WordPress
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* @subpackage Importer
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*/
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/**
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* WXR Parser that makes use of the SimpleXML PHP extension.
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*/
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class WXR_Parser_SimpleXML {
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function parse( $file ) {
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$authors = array();
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$posts = array();
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$categories = array();
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$tags = array();
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$terms = array();
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$internal_errors = libxml_use_internal_errors( true );
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$dom = new DOMDocument;
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$old_value = null;
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if ( function_exists( 'libxml_disable_entity_loader' ) && PHP_VERSION_ID < 80000 ) {
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$old_value = libxml_disable_entity_loader( true );
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}
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$success = $dom->loadXML( file_get_contents( $file ) );
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if ( ! is_null( $old_value ) ) {
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libxml_disable_entity_loader( $old_value );
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}
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if ( ! $success || isset( $dom->doctype ) ) {
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return new WP_Error( 'SimpleXML_parse_error', __( 'There was an error when reading this WXR file', 'wordpress-importer' ), libxml_get_errors() );
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}
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$xml = simplexml_import_dom( $dom );
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unset( $dom );
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// halt if loading produces an error
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if ( ! $xml ) {
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return new WP_Error( 'SimpleXML_parse_error', __( 'There was an error when reading this WXR file', 'wordpress-importer' ), libxml_get_errors() );
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}
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$wxr_version = $xml->xpath( '/rss/channel/wp:wxr_version' );
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if ( ! $wxr_version ) {
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return new WP_Error( 'WXR_parse_error', __( 'This does not appear to be a WXR file, missing/invalid WXR version number', 'wordpress-importer' ) );
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}
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$wxr_version = (string) trim( $wxr_version[0] );
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// confirm that we are dealing with the correct file format
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if ( ! preg_match( '/^\d+\.\d+$/', $wxr_version ) ) {
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return new WP_Error( 'WXR_parse_error', __( 'This does not appear to be a WXR file, missing/invalid WXR version number', 'wordpress-importer' ) );
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}
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$base_url = $xml->xpath( '/rss/channel/wp:base_site_url' );
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$base_url = (string) trim( isset( $base_url[0] ) ? $base_url[0] : '' );
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$base_blog_url = $xml->xpath( '/rss/channel/wp:base_blog_url' );
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if ( $base_blog_url ) {
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$base_blog_url = (string) trim( $base_blog_url[0] );
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} else {
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$base_blog_url = $base_url;
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}
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$namespaces = $xml->getDocNamespaces();
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if ( ! isset( $namespaces['wp'] ) ) {
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$namespaces['wp'] = 'http://wordpress.org/export/1.1/';
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}
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if ( ! isset( $namespaces['excerpt'] ) ) {
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$namespaces['excerpt'] = 'http://wordpress.org/export/1.1/excerpt/';
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}
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// grab authors
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foreach ( $xml->xpath( '/rss/channel/wp:author' ) as $author_arr ) {
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$a = $author_arr->children( $namespaces['wp'] );
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$login = (string) $a->author_login;
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$authors[ $login ] = array(
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'author_id' => (int) $a->author_id,
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'author_login' => $login,
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'author_email' => (string) $a->author_email,
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'author_display_name' => (string) $a->author_display_name,
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'author_first_name' => (string) $a->author_first_name,
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'author_last_name' => (string) $a->author_last_name,
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);
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}
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// grab cats, tags and terms
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foreach ( $xml->xpath( '/rss/channel/wp:category' ) as $term_arr ) {
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$t = $term_arr->children( $namespaces['wp'] );
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$category = array(
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'term_id' => (int) $t->term_id,
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'category_nicename' => (string) $t->category_nicename,
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'category_parent' => (string) $t->category_parent,
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'cat_name' => (string) $t->cat_name,
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'category_description' => (string) $t->category_description,
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);
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foreach ( $t->termmeta as $meta ) {
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$category['termmeta'][] = array(
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'key' => (string) $meta->meta_key,
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'value' => (string) $meta->meta_value,
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);
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}
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$categories[] = $category;
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}
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foreach ( $xml->xpath( '/rss/channel/wp:tag' ) as $term_arr ) {
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$t = $term_arr->children( $namespaces['wp'] );
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$tag = array(
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'term_id' => (int) $t->term_id,
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'tag_slug' => (string) $t->tag_slug,
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'tag_name' => (string) $t->tag_name,
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'tag_description' => (string) $t->tag_description,
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);
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foreach ( $t->termmeta as $meta ) {
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$tag['termmeta'][] = array(
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'key' => (string) $meta->meta_key,
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'value' => (string) $meta->meta_value,
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);
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}
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$tags[] = $tag;
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}
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foreach ( $xml->xpath( '/rss/channel/wp:term' ) as $term_arr ) {
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$t = $term_arr->children( $namespaces['wp'] );
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$term = array(
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'term_id' => (int) $t->term_id,
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'term_taxonomy' => (string) $t->term_taxonomy,
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'slug' => (string) $t->term_slug,
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'term_parent' => (string) $t->term_parent,
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'term_name' => (string) $t->term_name,
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'term_description' => (string) $t->term_description,
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);
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foreach ( $t->termmeta as $meta ) {
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$term['termmeta'][] = array(
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'key' => (string) $meta->meta_key,
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'value' => (string) $meta->meta_value,
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);
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}
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$terms[] = $term;
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}
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// grab posts
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foreach ( $xml->channel->item as $item ) {
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$post = array(
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'post_title' => (string) $item->title,
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'guid' => (string) $item->guid,
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);
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$dc = $item->children( 'http://purl.org/dc/elements/1.1/' );
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$post['post_author'] = (string) $dc->creator;
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$content = $item->children( 'http://purl.org/rss/1.0/modules/content/' );
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$excerpt = $item->children( $namespaces['excerpt'] );
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$post['post_content'] = (string) $content->encoded;
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$post['post_excerpt'] = (string) $excerpt->encoded;
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$wp = $item->children( $namespaces['wp'] );
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$post['post_id'] = (int) $wp->post_id;
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$post['post_date'] = (string) $wp->post_date;
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$post['post_date_gmt'] = (string) $wp->post_date_gmt;
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$post['comment_status'] = (string) $wp->comment_status;
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$post['ping_status'] = (string) $wp->ping_status;
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$post['post_name'] = (string) $wp->post_name;
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$post['status'] = (string) $wp->status;
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$post['post_parent'] = (int) $wp->post_parent;
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$post['menu_order'] = (int) $wp->menu_order;
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$post['post_type'] = (string) $wp->post_type;
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$post['post_password'] = (string) $wp->post_password;
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$post['is_sticky'] = (int) $wp->is_sticky;
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if ( isset( $wp->attachment_url ) ) {
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$post['attachment_url'] = (string) $wp->attachment_url;
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}
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foreach ( $item->category as $c ) {
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$att = $c->attributes();
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if ( isset( $att['nicename'] ) ) {
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$post['terms'][] = array(
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'name' => (string) $c,
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'slug' => (string) $att['nicename'],
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'domain' => (string) $att['domain'],
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);
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}
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}
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foreach ( $wp->postmeta as $meta ) {
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$post['postmeta'][] = array(
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'key' => (string) $meta->meta_key,
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'value' => (string) $meta->meta_value,
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);
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}
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foreach ( $wp->comment as $comment ) {
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$meta = array();
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if ( isset( $comment->commentmeta ) ) {
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foreach ( $comment->commentmeta as $m ) {
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$meta[] = array(
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'key' => (string) $m->meta_key,
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'value' => (string) $m->meta_value,
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);
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}
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}
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$post['comments'][] = array(
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'comment_id' => (int) $comment->comment_id,
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'comment_author' => (string) $comment->comment_author,
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'comment_author_email' => (string) $comment->comment_author_email,
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'comment_author_IP' => (string) $comment->comment_author_IP,
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'comment_author_url' => (string) $comment->comment_author_url,
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'comment_date' => (string) $comment->comment_date,
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'comment_date_gmt' => (string) $comment->comment_date_gmt,
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'comment_content' => (string) $comment->comment_content,
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'comment_approved' => (string) $comment->comment_approved,
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'comment_type' => (string) $comment->comment_type,
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'comment_parent' => (string) $comment->comment_parent,
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'comment_user_id' => (int) $comment->comment_user_id,
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'commentmeta' => $meta,
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);
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}
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$posts[] = $post;
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}
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return array(
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'authors' => $authors,
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'posts' => $posts,
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'categories' => $categories,
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'tags' => $tags,
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'terms' => $terms,
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'base_url' => $base_url,
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'base_blog_url' => $base_blog_url,
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'version' => $wxr_version,
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);
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}
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}
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