From a415c29efee45520ae252d2aa28f1083a521cd7b Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 09:56:49 +0200
Subject: Adding upstream version 6.4.3+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 wp-includes/blocks/index.php | 157 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 157 insertions(+)
 create mode 100644 wp-includes/blocks/index.php

(limited to 'wp-includes/blocks/index.php')

diff --git a/wp-includes/blocks/index.php b/wp-includes/blocks/index.php
new file mode 100644
index 0000000..4096772
--- /dev/null
+++ b/wp-includes/blocks/index.php
@@ -0,0 +1,157 @@
+<?php
+/**
+ * Used to set up all core blocks used with the block editor.
+ *
+ * @package WordPress
+ */
+
+define( 'BLOCKS_PATH', ABSPATH . WPINC . '/blocks/' );
+
+// Include files required for core blocks registration.
+require BLOCKS_PATH . 'legacy-widget.php';
+require BLOCKS_PATH . 'widget-group.php';
+require BLOCKS_PATH . 'require-dynamic-blocks.php';
+
+/**
+ * Registers core block style handles.
+ *
+ * While {@see register_block_style_handle()} is typically used for that, the way it is
+ * implemented is inefficient for core block styles. Registering those style handles here
+ * avoids unnecessary logic and filesystem lookups in the other function.
+ *
+ * @since 6.3.0
+ *
+ * @global string $wp_version The WordPress version string.
+ */
+function register_core_block_style_handles() {
+	global $wp_version;
+
+	if ( ! wp_should_load_separate_core_block_assets() ) {
+		return;
+	}
+
+	$blocks_url   = includes_url( 'blocks/' );
+	$suffix       = wp_scripts_get_suffix();
+	$wp_styles    = wp_styles();
+	$style_fields = array(
+		'style'       => 'style',
+		'editorStyle' => 'editor',
+	);
+
+	static $core_blocks_meta;
+	if ( ! $core_blocks_meta ) {
+		$core_blocks_meta = require BLOCKS_PATH . 'blocks-json.php';
+	}
+
+	$files          = false;
+	$transient_name = 'wp_core_block_css_files';
+
+	/*
+	 * Ignore transient cache when the development mode is set to 'core'. Why? To avoid interfering with
+	 * the core developer's workflow.
+	 */
+	$can_use_cached = ! wp_is_development_mode( 'core' );
+
+	if ( $can_use_cached ) {
+		$cached_files = get_transient( $transient_name );
+
+		// Check the validity of cached values by checking against the current WordPress version.
+		if (
+			is_array( $cached_files )
+			&& isset( $cached_files['version'] )
+			&& $cached_files['version'] === $wp_version
+			&& isset( $cached_files['files'] )
+		) {
+			$files = $cached_files['files'];
+		}
+	}
+
+	if ( ! $files ) {
+		$files = glob( wp_normalize_path( BLOCKS_PATH . '**/**.css' ) );
+
+		// Normalize BLOCKS_PATH prior to substitution for Windows environments.
+		$normalized_blocks_path = wp_normalize_path( BLOCKS_PATH );
+
+		$files = array_map(
+			static function ( $file ) use ( $normalized_blocks_path ) {
+				return str_replace( $normalized_blocks_path, '', $file );
+			},
+			$files
+		);
+
+		// Save core block style paths in cache when not in development mode.
+		if ( $can_use_cached ) {
+			set_transient(
+				$transient_name,
+				array(
+					'version' => $wp_version,
+					'files'   => $files,
+				)
+			);
+		}
+	}
+
+	$register_style = static function ( $name, $filename, $style_handle ) use ( $blocks_url, $suffix, $wp_styles, $files ) {
+		$style_path = "{$name}/{$filename}{$suffix}.css";
+		$path       = wp_normalize_path( BLOCKS_PATH . $style_path );
+
+		if ( ! in_array( $style_path, $files, true ) ) {
+			$wp_styles->add(
+				$style_handle,
+				false
+			);
+			return;
+		}
+
+		$wp_styles->add( $style_handle, $blocks_url . $style_path );
+		$wp_styles->add_data( $style_handle, 'path', $path );
+
+		$rtl_file = "{$name}/{$filename}-rtl{$suffix}.css";
+		if ( is_rtl() && in_array( $rtl_file, $files, true ) ) {
+			$wp_styles->add_data( $style_handle, 'rtl', 'replace' );
+			$wp_styles->add_data( $style_handle, 'suffix', $suffix );
+			$wp_styles->add_data( $style_handle, 'path', str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $path ) );
+		}
+	};
+
+	foreach ( $core_blocks_meta as $name => $schema ) {
+		/** This filter is documented in wp-includes/blocks.php */
+		$schema = apply_filters( 'block_type_metadata', $schema );
+
+		// Backfill these properties similar to `register_block_type_from_metadata()`.
+		if ( ! isset( $schema['style'] ) ) {
+			$schema['style'] = "wp-block-{$name}";
+		}
+		if ( ! isset( $schema['editorStyle'] ) ) {
+			$schema['editorStyle'] = "wp-block-{$name}-editor";
+		}
+
+		// Register block theme styles.
+		$register_style( $name, 'theme', "wp-block-{$name}-theme" );
+
+		foreach ( $style_fields as $style_field => $filename ) {
+			$style_handle = $schema[ $style_field ];
+			if ( is_array( $style_handle ) ) {
+				continue;
+			}
+			$register_style( $name, $filename, $style_handle );
+		}
+	}
+}
+add_action( 'init', 'register_core_block_style_handles', 9 );
+
+/**
+ * Registers core block types using metadata files.
+ * Dynamic core blocks are registered separately.
+ *
+ * @since 5.5.0
+ */
+function register_core_block_types_from_metadata() {
+	$block_folders = require BLOCKS_PATH . 'require-static-blocks.php';
+	foreach ( $block_folders as $block_folder ) {
+		register_block_type_from_metadata(
+			BLOCKS_PATH . $block_folder
+		);
+	}
+}
+add_action( 'init', 'register_core_block_types_from_metadata' );
-- 
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