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<?php |
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namespace Templately\Modules\FullSiteImport\Parsers; |
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|
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use WP_Error; |
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|
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; // Exit if accessed directly. |
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} |
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|
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/** |
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* WordPress extended RSS file parser implementations |
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* Originally made by WordPress part of WordPress/Importer. |
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* https://plugins.trac.wordpress.org/browser/wordpress-importer/trunk/parsers/class-wxr-parser-regex.php |
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* |
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* What was done (by Elementor): |
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* Reformat of the code. |
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* Changed text domain. |
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* Changed methods visibility. |
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*/ |
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|
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/** |
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* WXR Parser that uses regular expressions. Fallback for installs without an XML parser. |
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*/ |
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class WXR_Parser_Regex { |
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/** |
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* @var bool |
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*/ |
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private $has_gzip; |
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|
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private $authors = []; |
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private $posts = []; |
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private $categories = []; |
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private $tags = []; |
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private $terms = []; |
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private $base_url = ''; |
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private $base_blog_url = ''; |
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|
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/** |
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* @param string $file |
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* |
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* @return array|WP_Error |
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*/ |
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public function parse( $file ) { |
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$wxr_version = ''; |
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$in_multiline = false; |
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|
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$multiline_content = ''; |
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|
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$multiline_tags = [ |
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'item' => [ |
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'posts', |
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function ( $post ) { |
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return $this->process_post( $post ); |
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}, |
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], |
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'wp:category' => [ |
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'categories', |
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function ( $category ) { |
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return $this->process_category( $category ); |
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}, |
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], |
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'wp:tag' => [ |
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'tags', |
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function ( $tag ) { |
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return $this->process_tag( $tag ); |
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}, |
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], |
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'wp:term' => [ |
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'terms', |
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function ( $term ) { |
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return $this->process_term( $term ); |
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}, |
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], |
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]; |
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|
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$fp = $this->fopen( $file, 'r' ); |
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if ( $fp ) { |
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while ( ! $this->feof( $fp ) ) { |
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$importline = rtrim( $this->fgets( $fp ) ); |
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|
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if ( ! $wxr_version && preg_match( '|<wp:wxr_version>(\d+\.\d+)</wp:wxr_version>|', $importline, $version ) ) { |
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$wxr_version = $version[1]; |
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} |
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|
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if ( false !== strpos( $importline, '<wp:base_site_url>' ) ) { |
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preg_match( '|<wp:base_site_url>(.*?)</wp:base_site_url>|is', $importline, $url ); |
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$this->base_url = $url[1]; |
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continue; |
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} |
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|
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if ( false !== strpos( $importline, '<wp:base_blog_url>' ) ) { |
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preg_match( '|<wp:base_blog_url>(.*?)</wp:base_blog_url>|is', $importline, $blog_url ); |
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$this->base_blog_url = $blog_url[1]; |
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continue; |
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} else { |
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$this->base_blog_url = $this->base_url; |
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} |
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|
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if ( false !== strpos( $importline, '<wp:author>' ) ) { |
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preg_match( '|<wp:author>(.*?)</wp:author>|is', $importline, $author ); |
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$a = $this->process_author( $author[1] ); |
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$this->authors[ $a['author_login'] ] = $a; |
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continue; |
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} |
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|
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foreach ( $multiline_tags as $tag => $handler ) { |
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// Handle multi-line tags on a singular line. |
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if ( preg_match( '|<' . $tag . '>(.*?)</' . $tag . '>|is', $importline, $matches ) ) { |
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$this->{$handler[0]}[] = call_user_func( $handler[1], $matches[1] ); |
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|
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continue; |
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} |
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|
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$pos = strpos( $importline, "<$tag>" ); |
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|
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if ( false !== $pos ) { |
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// Take note of any content after the opening tag. |
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$multiline_content = trim( substr( $importline, $pos + strlen( $tag ) + 2 ) ); |
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|
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// We don't want to have this line added to `$is_multiline` below. |
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$importline = ''; |
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$in_multiline = $tag; |
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|
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continue; |
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} |
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|
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$pos = strpos( $importline, "</$tag>" ); |
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|
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if ( false !== $pos ) { |
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$in_multiline = false; |
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$multiline_content .= trim( substr( $importline, 0, $pos ) ); |
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|
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$this->{$handler[0]}[] = call_user_func( $handler[1], $multiline_content ); |
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} |
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} |
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|
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if ( $in_multiline && $importline ) { |
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$multiline_content .= $importline . "\n"; |
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} |
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} |
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|
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$this->fclose( $fp ); |
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} |
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|
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if ( ! $wxr_version ) { |
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return new WP_Error( 'WXR_parse_error', esc_html__( 'This does not appear to be a WXR file, missing/invalid WXR version number', 'elementor' ) ); |
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} |
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|
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return [ |
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'authors' => $this->authors, |
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'posts' => $this->posts, |
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'categories' => $this->categories, |
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'tags' => $this->tags, |
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'terms' => $this->terms, |
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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' => $wxr_version, |
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]; |
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} |
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|
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private function process_category( $category ) { |
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$term = [ |
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'term_id' => $this->get_tag( $category, 'wp:term_id' ), |
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'cat_name' => $this->get_tag( $category, 'wp:cat_name' ), |
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'category_nicename' => $this->get_tag( $category, 'wp:category_nicename' ), |
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'category_parent' => $this->get_tag( $category, 'wp:category_parent' ), |
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'category_description' => $this->get_tag( $category, 'wp:category_description' ), |
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]; |
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|
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$term_meta = $this->process_meta( $category, 'wp:termmeta' ); |
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if ( ! empty( $term_meta ) ) { |
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$term['termmeta'] = $term_meta; |
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} |
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|
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return $term; |
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} |
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|
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private function process_tag( $tag ) { |
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$term = [ |
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'term_id' => $this->get_tag( $tag, 'wp:term_id' ), |
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'tag_name' => $this->get_tag( $tag, 'wp:tag_name' ), |
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'tag_slug' => $this->get_tag( $tag, 'wp:tag_slug' ), |
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'tag_description' => $this->get_tag( $tag, 'wp:tag_description' ), |
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]; |
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|
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$term_meta = $this->process_meta( $tag, 'wp:termmeta' ); |
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if ( ! empty( $term_meta ) ) { |
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$term['termmeta'] = $term_meta; |
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} |
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|
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return $term; |
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} |
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|
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private function process_term( $term ) { |
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$term_data = [ |
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'term_id' => $this->get_tag( $term, 'wp:term_id' ), |
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'term_taxonomy' => $this->get_tag( $term, 'wp:term_taxonomy' ), |
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'slug' => $this->get_tag( $term, 'wp:term_slug' ), |
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'term_parent' => $this->get_tag( $term, 'wp:term_parent' ), |
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'term_name' => $this->get_tag( $term, 'wp:term_name' ), |
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'term_description' => $this->get_tag( $term, 'wp:term_description' ), |
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]; |
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|
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$term_meta = $this->process_meta( $term, 'wp:termmeta' ); |
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if ( ! empty( $term_meta ) ) { |
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$term_data['termmeta'] = $term_meta; |
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} |
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|
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return $term_data; |
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} |
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|
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private function process_meta( $string, $tag ) { |
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$parsed_meta = []; |
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|
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preg_match_all( "|<$tag>(.+?)</$tag>|is", $string, $meta ); |
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|
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if ( ! isset( $meta[1] ) ) { |
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return $parsed_meta; |
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} |
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|
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foreach ( $meta[1] as $m ) { |
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$parsed_meta[] = [ |
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'key' => $this->get_tag( $m, 'wp:meta_key' ), |
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'value' => $this->get_tag( $m, 'wp:meta_value' ), |
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]; |
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} |
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|
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return $parsed_meta; |
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} |
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|
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private function process_author( $a ) { |
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return [ |
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'author_id' => $this->get_tag( $a, 'wp:author_id' ), |
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'author_login' => $this->get_tag( $a, 'wp:author_login' ), |
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'author_email' => $this->get_tag( $a, 'wp:author_email' ), |
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'author_display_name' => $this->get_tag( $a, 'wp:author_display_name' ), |
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'author_first_name' => $this->get_tag( $a, 'wp:author_first_name' ), |
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'author_last_name' => $this->get_tag( $a, 'wp:author_last_name' ), |
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]; |
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} |
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|
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private function process_post( $post ) { |
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$normalize_tag_callback = function ( $matches ) { |
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return $this->normalize_tag( $matches ); |
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}; |
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|
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$post_id = $this->get_tag( $post, 'wp:post_id' ); |
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$post_title = $this->get_tag( $post, 'title' ); |
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$post_date = $this->get_tag( $post, 'wp:post_date' ); |
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$post_date_gmt = $this->get_tag( $post, 'wp:post_date_gmt' ); |
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$comment_status = $this->get_tag( $post, 'wp:comment_status' ); |
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$ping_status = $this->get_tag( $post, 'wp:ping_status' ); |
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$status = $this->get_tag( $post, 'wp:status' ); |
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$post_name = $this->get_tag( $post, 'wp:post_name' ); |
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$post_parent = $this->get_tag( $post, 'wp:post_parent' ); |
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$menu_order = $this->get_tag( $post, 'wp:menu_order' ); |
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$post_type = $this->get_tag( $post, 'wp:post_type' ); |
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$post_password = $this->get_tag( $post, 'wp:post_password' ); |
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$is_sticky = $this->get_tag( $post, 'wp:is_sticky' ); |
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$guid = $this->get_tag( $post, 'guid' ); |
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$post_author = $this->get_tag( $post, 'dc:creator' ); |
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|
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$post_excerpt = $this->get_tag( $post, 'excerpt:encoded' ); |
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$post_excerpt = preg_replace_callback( '|<(/?[A-Z]+)|', $normalize_tag_callback, $post_excerpt ); |
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$post_excerpt = str_replace( '<br>', '<br />', $post_excerpt ); |
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$post_excerpt = str_replace( '<hr>', '<hr />', $post_excerpt ); |
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|
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$post_content = $this->get_tag( $post, 'content:encoded' ); |
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$post_content = preg_replace_callback( '|<(/?[A-Z]+)|', $normalize_tag_callback, $post_content ); |
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$post_content = str_replace( '<br>', '<br />', $post_content ); |
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$post_content = str_replace( '<hr>', '<hr />', $post_content ); |
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|
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$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' ); |
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|
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$attachment_url = $this->get_tag( $post, 'wp:attachment_url' ); |
| 276 |
if ( $attachment_url ) { |
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$postdata['attachment_url'] = $attachment_url; |
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} |
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|
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// Extract attachment_type field |
| 281 |
$attachment_type = $this->get_tag( $post, 'wp:attachment_type' ); |
| 282 |
$postdata['attachment_type'] = $attachment_type ? $attachment_type : null; |
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|
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preg_match_all( '|<category domain="([^"]+?)" nicename="([^"]+?)">(.+?)</category>|is', $post, $terms, PREG_SET_ORDER ); |
| 285 |
foreach ( $terms as $t ) { |
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$post_terms[] = [ |
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'slug' => $t[2], |
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'domain' => $t[1], |
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'name' => str_replace( [ '<![CDATA[', ']]>' ], '', $t[3] ), |
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]; |
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} |
| 292 |
if ( ! empty( $post_terms ) ) { |
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$postdata['terms'] = $post_terms; |
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} |
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|
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preg_match_all( '|<wp:comment>(.+?)</wp:comment>|is', $post, $comments ); |
| 297 |
$comments = $comments[1]; |
| 298 |
if ( $comments ) { |
| 299 |
foreach ( $comments as $comment ) { |
| 300 |
$post_comments[] = [ |
| 301 |
'comment_id' => $this->get_tag( $comment, 'wp:comment_id' ), |
| 302 |
'comment_author' => $this->get_tag( $comment, 'wp:comment_author' ), |
| 303 |
'comment_author_email' => $this->get_tag( $comment, 'wp:comment_author_email' ), |
| 304 |
'comment_author_IP' => $this->get_tag( $comment, 'wp:comment_author_IP' ), |
| 305 |
'comment_author_url' => $this->get_tag( $comment, 'wp:comment_author_url' ), |
| 306 |
'comment_date' => $this->get_tag( $comment, 'wp:comment_date' ), |
| 307 |
'comment_date_gmt' => $this->get_tag( $comment, 'wp:comment_date_gmt' ), |
| 308 |
'comment_content' => $this->get_tag( $comment, 'wp:comment_content' ), |
| 309 |
'comment_approved' => $this->get_tag( $comment, 'wp:comment_approved' ), |
| 310 |
'comment_type' => $this->get_tag( $comment, 'wp:comment_type' ), |
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'comment_parent' => $this->get_tag( $comment, 'wp:comment_parent' ), |
| 312 |
'comment_user_id' => $this->get_tag( $comment, 'wp:comment_user_id' ), |
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'commentmeta' => $this->process_meta( $comment, 'wp:commentmeta' ), |
| 314 |
]; |
| 315 |
} |
| 316 |
} |
| 317 |
if ( ! empty( $post_comments ) ) { |
| 318 |
$postdata['comments'] = $post_comments; |
| 319 |
} |
| 320 |
|
| 321 |
$post_meta = $this->process_meta( $post, 'wp:postmeta' ); |
| 322 |
if ( ! empty( $post_meta ) ) { |
| 323 |
$postdata['postmeta'] = $post_meta; |
| 324 |
} |
| 325 |
|
| 326 |
return $postdata; |
| 327 |
} |
| 328 |
|
| 329 |
private function get_tag( $string, $tag ) { |
| 330 |
preg_match( "|<$tag.*?>(.*?)</$tag>|is", $string, $return ); |
| 331 |
if ( isset( $return[1] ) ) { |
| 332 |
if ( substr( $return[1], 0, 9 ) == '<![CDATA[' ) { |
| 333 |
if ( strpos( $return[1], ']]]]><![CDATA[>' ) !== false ) { |
| 334 |
preg_match_all( '|<!\[CDATA\[(.*?)\]\]>|s', $return[1], $matches ); |
| 335 |
$return = ''; |
| 336 |
foreach ( $matches[1] as $match ) { |
| 337 |
$return .= $match; |
| 338 |
} |
| 339 |
} else { |
| 340 |
$return = preg_replace( '|^<!\[CDATA\[(.*)\]\]>$|s', '$1', $return[1] ); |
| 341 |
} |
| 342 |
} else { |
| 343 |
$return = $return[1]; |
| 344 |
} |
| 345 |
} else { |
| 346 |
$return = ''; |
| 347 |
} |
| 348 |
|
| 349 |
return $return; |
| 350 |
} |
| 351 |
|
| 352 |
private function normalize_tag( $matches ) { |
| 353 |
return '<' . strtolower( $matches[1] ); |
| 354 |
} |
| 355 |
|
| 356 |
private function fopen( $filename, $mode = 'r' ) { |
| 357 |
if ( $this->has_gzip ) { |
| 358 |
return gzopen( $filename, $mode ); |
| 359 |
} |
| 360 |
|
| 361 |
return fopen( $filename, $mode ); |
| 362 |
} |
| 363 |
|
| 364 |
private function feof( $fp ) { |
| 365 |
if ( $this->has_gzip ) { |
| 366 |
return gzeof( $fp ); |
| 367 |
} |
| 368 |
|
| 369 |
return feof( $fp ); |
| 370 |
} |
| 371 |
|
| 372 |
private function fgets( $fp, $len = 8192 ) { |
| 373 |
if ( $this->has_gzip ) { |
| 374 |
return gzgets( $fp, $len ); |
| 375 |
} |
| 376 |
|
| 377 |
return fgets( $fp, $len ); |
| 378 |
} |
| 379 |
|
| 380 |
private function fclose( $fp ) { |
| 381 |
if ( $this->has_gzip ) { |
| 382 |
return gzclose( $fp ); |
| 383 |
} |
| 384 |
|
| 385 |
return fclose( $fp ); |
| 386 |
} |
| 387 |
|
| 388 |
public function __construct() { |
| 389 |
$this->has_gzip = is_callable( 'gzopen' ); |
| 390 |
} |
| 391 |
} |
| 392 |
|
