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✏️ Editing: class-wxr-parser-xml.php

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

/**
 * WXR Parser that makes use of the XML Parser PHP extension.
 */
class WXR_Parser_XML {
	public $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',
	);
	public $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',
	);

public $wxr_version;
	public $in_post;
	public $cdata;
	public $data;
	public $sub_data;
	public $in_tag;
	public $in_sub_tag;
	public $authors;
	public $posts;
	public $term;
	public $category;
	public $tag;
	public $base_url;
	public $base_blog_url;

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

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

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

switch ( $tag ) {
			case 'category':
				if ( isset( $attr['domain'], $attr['nicename'] ) ) {
					if ( false === $this->sub_data ) {
						$this->sub_data = array();
					}

$this->sub_data['domain'] = $attr['domain'];
					$this->sub_data['slug']   = $attr['nicename'];
				}
				break;
			case 'item':
				$this->in_post = true;
				break;
			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 );
		}
	}

default:
				if ( $this->in_sub_tag ) {
					if ( false === $this->sub_data ) {
						$this->sub_data = array();
					}

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

$this->data[ $this->in_tag ] = ! empty( $this->cdata ) ? $this->cdata : '';
					$this->in_tag                = false;
				}
		}

$this->cdata = false;
	}
}

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