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Editing: wxr-parser-simple-xml.php

<?php
namespace Elementor\Core\Utils\ImportExport\Parsers;

use Elementor\Utils;
use WP_Error;

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

/**
 * WordPress eXtended RSS file parser implementations,
 * Originally made by WordPress part of WordPress/Importer.
 * https://plugins.trac.wordpress.org/browser/wordpress-importer/trunk/parsers/class-wxr-parser-simplexml.php
 *
 * What was done:
 * Reformat of the code.
 * Removed variable '$internal_errors'.
 * Changed text domain.
 */

/**
 * WXR Parser that makes use of the SimpleXML PHP extension.
 */
class WXR_Parser_SimpleXML {

/**
	 * @param string $file
	 *
	 * @return array|\WP_Error
	 */
	public function parse( $file ) {
		$authors = [];
		$posts = [];
		$categories = [];
		$tags = [];
		$terms = [];

libxml_use_internal_errors( true );

$dom = new \DOMDocument();
		$old_value = null;

$libxml_disable_entity_loader_exists = function_exists( 'libxml_disable_entity_loader' );

if ( $libxml_disable_entity_loader_exists ) {
			$old_value = libxml_disable_entity_loader( true ); // phpcs:ignore Generic.PHP.DeprecatedFunctions.Deprecated
		}

$success = $dom->loadXML( Utils::file_get_contents( $file ) );

if ( $libxml_disable_entity_loader_exists && ! is_null( $old_value ) ) {
			libxml_disable_entity_loader( $old_value ); // phpcs:ignore Generic.PHP.DeprecatedFunctions.Deprecated
		}

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

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

$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', esc_html__( 'This does not appear to be a WXR file, missing/invalid WXR version number', 'elementor' ) );
		}

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

$base_blog_url = $xml->xpath( '/rss/channel/wp:base_blog_url' );
		if ( $base_blog_url ) {
			$base_blog_url = (string) trim( $base_blog_url[0] );
		} else {
			$base_blog_url = $base_url;
		}

$page_on_front = $xml->xpath( '/rss/channel/wp:page_on_front' );

if ( $page_on_front ) {
			$page_on_front = (int) $page_on_front[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 ] = [
				'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 = [
				'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'][] = [
					'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 = [
				'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'][] = [
					'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 = [
				'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'][] = [
					'key' => (string) $meta->meta_key,
					'value' => (string) $meta->meta_value,
				];
			}

$terms[] = $term;
		}

// Grab posts.
		foreach ( $xml->channel->item as $item ) {
			$post = [
				'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'][] = [
						'name' => (string) $c,
						'slug' => (string) $att['nicename'],
						'domain' => (string) $att['domain'],
					];
				}
			}

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

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

$post['comments'][] = [
					'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 [
			'authors' => $authors,
			'posts' => $posts,
			'categories' => $categories,
			'tags' => $tags,
			'terms' => $terms,
			'base_url' => $base_url,
			'base_blog_url' => $base_blog_url,
			'page_on_front' => $page_on_front,
			'version' => $wxr_version,
		];
	}
}

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