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<?php namespace Yoast\WP\SEO\Helpers; use WP_Block_Parser_Block; /** * A helper object for blocks. */ class Blocks_Helper { /** * Holds the Post_Helper instance. * * @var Post_Helper */ private $post; /** * Constructs a Blocks_Helper instance. * * @codeCoverageIgnore It handles dependencies. * * @param Post_Helper $post The post helper. */ public function __construct( Post_Helper $post ) { $this->post = $post; } /** * Returns all blocks in a given post. * * @param int $post_id The post id. * * @return array The blocks in a block-type => WP_Block_Parser_Block[] format. */ public function get_all_blocks_from_post( $post_id ) { if ( ! $this->has_blocks_support() ) { return []; } $post = $this->post->get_post( $post_id ); return $this->get_all_blocks_from_content( $post->post_content ); } /** * Returns all blocks in a given content. * * @param string $content The content. * * @return array The blocks in a block-type => WP_Block_Parser_Block[] format. */ public function get_all_blocks_from_content( $content ) { if ( ! $this->has_blocks_support() ) { return []; } $collection = []; $blocks = \parse_blocks( $content ); return $this->collect_blocks( $blocks, $collection ); } /** * Checks if the installation has blocks support. * * @codeCoverageIgnore It only checks if a WordPress function exists. * * @return bool True when function parse_blocks exists. */ protected function has_blocks_support() { return \function_exists( 'parse_blocks' ); } /** * Collects an array of blocks into an organised collection. * * @param WP_Block_Parser_Block[] $blocks The blocks. * @param array $collection The collection. * * @return array The blocks in a block-type => WP_Block_Parser_Block[] format. */ private function collect_blocks( $blocks, $collection ) { foreach ( $blocks as $block ) { if ( empty( $block['blockName'] ) ) { continue; } if ( ! isset( $collection[ $block['blockName'] ] ) || ! \is_array( $collection[ $block['blockName'] ] ) ) { $collection[ $block['blockName'] ] = []; } $collection[ $block['blockName'] ][] = $block; if ( isset( $block['innerBlocks'] ) ) { $collection = $this->collect_blocks( $block['innerBlocks'], $collection ); } } return $collection; } }