274 lines
6.7 KiB
PHP
274 lines
6.7 KiB
PHP
<?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 XML Parser PHP extension.
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*/
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class WXR_Parser_XML {
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public $wp_tags = array(
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'wp:post_id',
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'wp:post_date',
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'wp:post_date_gmt',
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'wp:comment_status',
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'wp:ping_status',
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'wp:attachment_url',
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'wp:status',
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'wp:post_name',
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'wp:post_parent',
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'wp:menu_order',
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'wp:post_type',
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'wp:post_password',
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'wp:is_sticky',
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'wp:term_id',
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'wp:category_nicename',
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'wp:category_parent',
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'wp:cat_name',
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'wp:category_description',
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'wp:tag_slug',
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'wp:tag_name',
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'wp:tag_description',
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'wp:term_taxonomy',
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'wp:term_parent',
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'wp:term_name',
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'wp:term_description',
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'wp:author_id',
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'wp:author_login',
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'wp:author_email',
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'wp:author_display_name',
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'wp:author_first_name',
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'wp:author_last_name',
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);
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public $wp_sub_tags = array(
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'wp:comment_id',
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'wp:comment_author',
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'wp:comment_author_email',
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'wp:comment_author_url',
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'wp:comment_author_IP',
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'wp:comment_date',
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'wp:comment_date_gmt',
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'wp:comment_content',
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'wp:comment_approved',
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'wp:comment_type',
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'wp:comment_parent',
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'wp:comment_user_id',
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);
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public $wxr_version;
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public $in_post;
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public $cdata;
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public $data;
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public $sub_data;
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public $in_tag;
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public $in_sub_tag;
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public $authors;
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public $posts;
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public $term;
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public $category;
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public $tag;
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public $base_url;
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public $base_blog_url;
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function parse( $file ) {
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$this->wxr_version = false;
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$this->in_post = false;
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$this->cdata = false;
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$this->data = false;
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$this->sub_data = false;
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$this->in_tag = false;
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$this->in_sub_tag = false;
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$this->authors = array();
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$this->posts = array();
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$this->term = array();
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$this->category = array();
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$this->tag = array();
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$xml = xml_parser_create( 'UTF-8' );
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xml_parser_set_option( $xml, XML_OPTION_SKIP_WHITE, 1 );
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xml_parser_set_option( $xml, XML_OPTION_CASE_FOLDING, 0 );
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xml_set_object( $xml, $this );
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xml_set_character_data_handler( $xml, 'cdata' );
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xml_set_element_handler( $xml, 'tag_open', 'tag_close' );
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if ( ! xml_parse( $xml, file_get_contents( $file ), true ) ) {
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$current_line = xml_get_current_line_number( $xml );
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$current_column = xml_get_current_column_number( $xml );
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$error_code = xml_get_error_code( $xml );
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$error_string = xml_error_string( $error_code );
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return new WP_Error( 'XML_parse_error', 'There was an error when reading this WXR file', array( $current_line, $current_column, $error_string ) );
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}
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xml_parser_free( $xml );
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if ( ! preg_match( '/^\d+\.\d+$/', $this->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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return array(
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'authors' => $this->authors,
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'posts' => $this->posts,
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'categories' => $this->category,
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'tags' => $this->tag,
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'terms' => $this->term,
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'base_url' => $this->base_url,
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'base_blog_url' => $this->base_blog_url,
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'version' => $this->wxr_version,
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);
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}
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function tag_open( $parse, $tag, $attr ) {
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if ( in_array( $tag, $this->wp_tags, true ) ) {
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$this->in_tag = substr( $tag, 3 );
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return;
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}
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if ( in_array( $tag, $this->wp_sub_tags, true ) ) {
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$this->in_sub_tag = substr( $tag, 3 );
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return;
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}
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switch ( $tag ) {
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case 'category':
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if ( isset( $attr['domain'], $attr['nicename'] ) ) {
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if ( false === $this->sub_data ) {
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$this->sub_data = array();
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}
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$this->sub_data['domain'] = $attr['domain'];
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$this->sub_data['slug'] = $attr['nicename'];
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}
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break;
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case 'item':
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$this->in_post = true;
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break;
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case 'title':
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if ( $this->in_post ) {
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$this->in_tag = 'post_title';
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}
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break;
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case 'guid':
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$this->in_tag = 'guid';
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break;
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case 'dc:creator':
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$this->in_tag = 'post_author';
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break;
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case 'content:encoded':
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$this->in_tag = 'post_content';
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break;
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case 'excerpt:encoded':
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$this->in_tag = 'post_excerpt';
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break;
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case 'wp:term_slug':
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$this->in_tag = 'slug';
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break;
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case 'wp:meta_key':
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$this->in_sub_tag = 'key';
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break;
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case 'wp:meta_value':
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$this->in_sub_tag = 'value';
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break;
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}
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}
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function cdata( $parser, $cdata ) {
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if ( ! trim( $cdata ) ) {
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return;
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}
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if ( false !== $this->in_tag || false !== $this->in_sub_tag ) {
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$this->cdata .= $cdata;
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} else {
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$this->cdata .= trim( $cdata );
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}
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}
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function tag_close( $parser, $tag ) {
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switch ( $tag ) {
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case 'wp:comment':
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unset( $this->sub_data['key'], $this->sub_data['value'] ); // remove meta sub_data
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if ( ! empty( $this->sub_data ) ) {
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$this->data['comments'][] = $this->sub_data;
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}
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$this->sub_data = false;
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break;
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case 'wp:commentmeta':
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$this->sub_data['commentmeta'][] = array(
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'key' => $this->sub_data['key'],
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'value' => $this->sub_data['value'],
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);
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break;
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case 'category':
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if ( ! empty( $this->sub_data ) ) {
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$this->sub_data['name'] = $this->cdata;
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$this->data['terms'][] = $this->sub_data;
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}
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$this->sub_data = false;
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break;
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case 'wp:postmeta':
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if ( ! empty( $this->sub_data ) ) {
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$this->data['postmeta'][] = $this->sub_data;
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}
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$this->sub_data = false;
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break;
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case 'item':
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$this->posts[] = $this->data;
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$this->data = false;
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break;
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case 'wp:category':
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case 'wp:tag':
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case 'wp:term':
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$n = substr( $tag, 3 );
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array_push( $this->$n, $this->data );
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$this->data = false;
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break;
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case 'wp:termmeta':
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if ( ! empty( $this->sub_data ) ) {
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$this->data['termmeta'][] = $this->sub_data;
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}
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$this->sub_data = false;
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break;
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case 'wp:author':
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if ( ! empty( $this->data['author_login'] ) ) {
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$this->authors[ $this->data['author_login'] ] = $this->data;
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}
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$this->data = false;
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break;
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case 'wp:base_site_url':
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$this->base_url = $this->cdata;
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if ( ! isset( $this->base_blog_url ) ) {
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$this->base_blog_url = $this->cdata;
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}
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break;
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case 'wp:base_blog_url':
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$this->base_blog_url = $this->cdata;
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break;
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case 'wp:wxr_version':
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$this->wxr_version = $this->cdata;
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break;
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default:
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if ( $this->in_sub_tag ) {
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if ( false === $this->sub_data ) {
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$this->sub_data = array();
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}
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$this->sub_data[ $this->in_sub_tag ] = ! empty( $this->cdata ) ? $this->cdata : '';
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$this->in_sub_tag = false;
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} elseif ( $this->in_tag ) {
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if ( false === $this->data ) {
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$this->data = array();
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}
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$this->data[ $this->in_tag ] = ! empty( $this->cdata ) ? $this->cdata : '';
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$this->in_tag = false;
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}
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}
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$this->cdata = false;
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}
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}
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