126 lines
2.9 KiB
PHP
126 lines
2.9 KiB
PHP
<?php
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/**
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* The Yoast TOC Block Converter.
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*
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* @since 1.0.104
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* @package RankMath
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* @subpackage RankMath\Status
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* @author Rank Math <support@rankmath.com>
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*/
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namespace RankMath\Tools;
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use RankMath\Helpers\HTML;
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defined( 'ABSPATH' ) || exit;
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/**
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* Yoast_TOC_Converter class.
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*/
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class Yoast_TOC_Converter {
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/**
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* Convert TOC blocks to Rank Math.
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*
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* @param array $block Block to convert.
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*
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* @return array
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*/
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public function convert( $block ) {
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$exclude_headings = [];
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if ( ! empty( $block['attrs']['maxHeadingLevel'] ) ) {
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for ( $i = $block['attrs']['maxHeadingLevel'] + 1; $i <= 6; $i++ ) {
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$exclude_headings[] = "h{$i}";
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}
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}
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$new_block = [
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'blockName' => 'rank-math/toc-block',
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'attrs' => [
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'title' => $this->get_toc_title( $block['innerHTML'] ),
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'headings' => $this->get_headings( $block['innerHTML'] ),
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'listStyle' => 'ul',
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'titleWrapper' => 'h2',
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'excludeHeadings' => $exclude_headings,
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],
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];
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$new_block['innerContent'][] = $this->get_html( $block['innerHTML'] );
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return $new_block;
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}
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/**
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* Replace block in content.
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*
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* @param string $post_content Post content.
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* @param array $blocks Blocks.
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*
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* @return string
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*/
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public function replace( $post_content, $blocks ) {
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preg_match_all( '/<!-- wp:yoast-seo\/table-of-contents.*-->.*<!-- \/wp:yoast-seo\/table-of-contents -->/iUs', $post_content, $matches );
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foreach ( $matches[0] as $index => $match ) {
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$post_content = \str_replace( $match, $blocks[ $index ], $post_content );
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}
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return $post_content;
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}
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/**
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* Extract headings from the block content.
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*
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* @param string $content Block content.
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*
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* @return array
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*/
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public function get_headings( $content ) {
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preg_match_all( '|<a\s*href="([^"]+)"[^>]+>([^<]+)</a>|', $content, $matches );
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if ( empty( $matches ) || empty( $matches[0] ) ) {
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return [];
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}
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$headings = [];
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foreach ( $matches[0] as $link ) {
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$attrs = HTML::extract_attributes( $link );
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$headings[] = [
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'key' => uniqid( 'toc-' ),
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'link' => $attrs['href'] ?? '',
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'content' => wp_strip_all_tags( $link ),
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'level' => $attrs['data-level'] ?? '',
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'disable' => false,
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];
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}
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return $headings;
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}
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/**
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* Get TOC title.
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*
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* @param string $html Block HTML.
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*
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* @return string
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*/
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public function get_toc_title( $html ) {
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preg_match( '#<h2.*?>(.*?)</h2>#i', $html, $found );
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return ! empty( $found[1] ) ? $found[1] : '';
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}
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/**
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* Generate HTML.
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*
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* @param string $html Block html.
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*
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* @return string
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*/
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private function get_html( $html ) {
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$html = str_replace( 'wp-block-yoast-seo-table-of-contents yoast-table-of-contents', 'wp-block-rank-math-toc-block', $html );
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$html = str_replace( '</h2><ul>', '</h2><nav><ul>', $html );
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$html = str_replace( '</ul></div>', '</nav></ul></div>', $html );
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$html = preg_replace( '/data-level="([^"]*)"/', '', $html );
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return $html;
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}
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}
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