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<?php
/**
* Functions related to registering and parsing blocks.
*
* @package WordPress
* @subpackage Blocks
* @since 5.0.0
*/
/**
* Removes the block asset's path prefix if provided.
*
* @since 5.5.0
*
* @param string $asset_handle_or_path Asset handle or prefixed path.
* @return string Path without the prefix or the original value.
*/
function remove_block_asset_path_prefix( $asset_handle_or_path ) {
$path_prefix = 'file:';
if ( 0 !== strpos( $asset_handle_or_path, $path_prefix ) ) {
return $asset_handle_or_path;
}
$path = substr(
$asset_handle_or_path,
strlen( $path_prefix )
);
if ( strpos( $path, './' ) === 0 ) {
$path = substr( $path, 2 );
}
return $path;
}
/**
* Generates the name for an asset based on the name of the block
* and the field name provided.
*
* @since 5.5.0
*
* @param string $block_name Name of the block.
* @param string $field_name Name of the metadata field.
* @return string Generated asset name for the block's field.
*/
function generate_block_asset_handle( $block_name, $field_name ) {
if ( 0 === strpos( $block_name, 'core/' ) ) {
$asset_handle = str_replace( 'core/', 'wp-block-', $block_name );
if ( 0 === strpos( $field_name, 'editor' ) ) {
$asset_handle .= '-editor';
}
if ( 0 === strpos( $field_name, 'view' ) ) {
$asset_handle .= '-view';
}
return $asset_handle;
}
$field_mappings = array(
'editorScript' => 'editor-script',
'script' => 'script',
'viewScript' => 'view-script',
'editorStyle' => 'editor-style',
'style' => 'style',
);
return str_replace( '/', '-', $block_name ) .
'-' . $field_mappings[ $field_name ];
}
/**
* Finds a script handle for the selected block metadata field. It detects
* when a path to file was provided and finds a corresponding asset file
* with details necessary to register the script under automatically
* generated handle name. It returns unprocessed script handle otherwise.
*
* @since 5.5.0
*
* @param array $metadata Block metadata.
* @param string $field_name Field name to pick from metadata.
* @return string|false Script handle provided directly or created through
* script's registration, or false on failure.
*/
function register_block_script_handle( $metadata, $field_name ) {
if ( empty( $metadata[ $field_name ] ) ) {
return false;
}
$script_handle = $metadata[ $field_name ];
$script_path = remove_block_asset_path_prefix( $metadata[ $field_name ] );
if ( $script_handle === $script_path ) {
return $script_handle;
}
$script_handle = generate_block_asset_handle( $metadata['name'], $field_name );
$script_asset_path = wp_normalize_path(
realpath(
dirname( $metadata['file'] ) . '/' .
substr_replace( $script_path, '.asset.php', - strlen( '.js' ) )
)
);
if ( ! file_exists( $script_asset_path ) ) {
_doing_it_wrong(
__FUNCTION__,
sprintf(
/* translators: 1: Field name, 2: Block name. */
__( 'The asset file for the "%1$s" defined in "%2$s" block definition is missing.' ),
$field_name,
$metadata['name']
),
'5.5.0'
);
return false;
}
// Path needs to be normalized to work in Windows env.
$wpinc_path_norm = wp_normalize_path( realpath( ABSPATH . WPINC ) );
$theme_path_norm = wp_normalize_path( get_theme_file_path() );
$script_path_norm = wp_normalize_path( realpath( dirname( $metadata['file'] ) . '/' . $script_path ) );
$is_core_block = isset( $metadata['file'] ) && 0 === strpos( $metadata['file'], $wpinc_path_norm );
$is_theme_block = 0 === strpos( $script_path_norm, $theme_path_norm );
$script_uri = plugins_url( $script_path, $metadata['file'] );
if ( $is_core_block ) {
$script_uri = includes_url( str_replace( $wpinc_path_norm, '', $script_path_norm ) );
} elseif ( $is_theme_block ) {
$script_uri = get_theme_file_uri( str_replace( $theme_path_norm, '', $script_path_norm ) );
}
$script_asset = require $script_asset_path;
$script_dependencies = isset( $script_asset['dependencies'] ) ? $script_asset['dependencies'] : array();
$result = wp_register_script(
$script_handle,
$script_uri,
$script_dependencies,
isset( $script_asset['version'] ) ? $script_asset['version'] : false
);
if ( ! $result ) {
return false;
}
if ( ! empty( $metadata['textdomain'] ) && in_array( 'wp-i18n', $script_dependencies, true ) ) {
wp_set_script_translations( $script_handle, $metadata['textdomain'] );
}
return $script_handle;
}
/**
* Finds a style handle for the block metadata field. It detects when a path
* to file was provided and registers the style under automatically
* generated handle name. It returns unprocessed style handle otherwise.
*
* @since 5.5.0
*
* @param array $metadata Block metadata.
* @param string $field_name Field name to pick from metadata.
* @return string|false Style handle provided directly or created through
* style's registration, or false on failure.
*/
function register_block_style_handle( $metadata, $field_name ) {
if ( empty( $metadata[ $field_name ] ) ) {
return false;
}
$wpinc_path_norm = wp_normalize_path( realpath( ABSPATH . WPINC ) );
$theme_path_norm = wp_normalize_path( get_theme_file_path() );
$is_core_block = isset( $metadata['file'] ) && 0 === strpos( $metadata['file'], $wpinc_path_norm );
if ( $is_core_block && ! wp_should_load_separate_core_block_assets() ) {
return false;
}
// Check whether styles should have a ".min" suffix or not.
$suffix = SCRIPT_DEBUG ? '' : '.min';
$style_handle = $metadata[ $field_name ];
$style_path = remove_block_asset_path_prefix( $metadata[ $field_name ] );
if ( $style_handle === $style_path && ! $is_core_block ) {
return $style_handle;
}
$style_uri = plugins_url( $style_path, $metadata['file'] );
if ( $is_core_block ) {
$style_path = "style$suffix.css";
$style_uri = includes_url( 'blocks/' . str_replace( 'core/', '', $metadata['name'] ) . "/style$suffix.css" );
}
$style_path_norm = wp_normalize_path( realpath( dirname( $metadata['file'] ) . '/' . $style_path ) );
$is_theme_block = 0 === strpos( $style_path_norm, $theme_path_norm );
if ( $is_theme_block ) {
$style_uri = get_theme_file_uri( str_replace( $theme_path_norm, '', $style_path_norm ) );
}
$style_handle = generate_block_asset_handle( $metadata['name'], $field_name );
$block_dir = dirname( $metadata['file'] );
$style_file = realpath( "$block_dir/$style_path" );
$has_style_file = false !== $style_file;
$version = ! $is_core_block && isset( $metadata['version'] ) ? $metadata['version'] : false;
$style_uri = $has_style_file ? $style_uri : false;
$result = wp_register_style(
$style_handle,
$style_uri,
array(),
$version
);
if ( file_exists( str_replace( '.css', '-rtl.css', $style_file ) ) ) {
wp_style_add_data( $style_handle, 'rtl', 'replace' );
}
if ( $has_style_file ) {
wp_style_add_data( $style_handle, 'path', $style_file );
}
$rtl_file = str_replace( "$suffix.css", "-rtl$suffix.css", $style_file );
if ( is_rtl() && file_exists( $rtl_file ) ) {
wp_style_add_data( $style_handle, 'path', $rtl_file );
}
return $result ? $style_handle : false;
}
/**
* Gets i18n schema for block's metadata read from `block.json` file.
*
* @since 5.9.0
*
* @return object The schema for block's metadata.
*/
function get_block_metadata_i18n_schema() {
static $i18n_block_schema;
if ( ! isset( $i18n_block_schema ) ) {
$i18n_block_schema = wp_json_file_decode( __DIR__ . '/block-i18n.json' );
}
return $i18n_block_schema;
}
/**
* Registers a block type from the metadata stored in the `block.json` file.
*
* @since 5.5.0
* @since 5.7.0 Added support for `textdomain` field and i18n handling for all translatable fields.
* @since 5.9.0 Added support for `variations` and `viewScript` fields.
*
* @param string $file_or_folder Path to the JSON file with metadata definition for
* the block or path to the folder where the `block.json` file is located.
* If providing the path to a JSON file, the filename must end with `block.json`.
* @param array $args Optional. Array of block type arguments. Accepts any public property
* of `WP_Block_Type`. See WP_Block_Type::__construct() for information
* on accepted arguments. Default empty array.
* @return WP_Block_Type|false The registered block type on success, or false on failure.
*/
function register_block_type_from_metadata( $file_or_folder, $args = array() ) {
$filename = 'block.json';
$metadata_file = ( substr( $file_or_folder, -strlen( $filename ) ) !== $filename ) ?
trailingslashit( $file_or_folder ) . $filename :
$file_or_folder;
if ( ! file_exists( $metadata_file ) ) {
return false;
}
$metadata = wp_json_file_decode( $metadata_file, array( 'associative' => true ) );
if ( ! is_array( $metadata ) || empty( $metadata['name'] ) ) {
return false;
}
$metadata['file'] = wp_normalize_path( realpath( $metadata_file ) );
/**
* Filters the metadata provided for registering a block type.
*
* @since 5.7.0
*
* @param array $metadata Metadata for registering a block type.
*/
$metadata = apply_filters( 'block_type_metadata', $metadata );
// Add `style` and `editor_style` for core blocks if missing.
if ( ! empty( $metadata['name'] ) && 0 === strpos( $metadata['name'], 'core/' ) ) {
$block_name = str_replace( 'core/', '', $metadata['name'] );
if ( ! isset( $metadata['style'] ) ) {
$metadata['style'] = "wp-block-$block_name";
}
if ( ! isset( $metadata['editorStyle'] ) ) {
$metadata['editorStyle'] = "wp-block-{$block_name}-editor";
}
}
$settings = array();
$property_mappings = array(
'apiVersion' => 'api_version',
'title' => 'title',
'category' => 'category',
'parent' => 'parent',
'ancestor' => 'ancestor',
'icon' => 'icon',
'description' => 'description',
'keywords' => 'keywords',
'attributes' => 'attributes',
'providesContext' => 'provides_context',
'usesContext' => 'uses_context',
'supports' => 'supports',
'styles' => 'styles',
'variations' => 'variations',
'example' => 'example',
);
$textdomain = ! empty( $metadata['textdomain'] ) ? $metadata['textdomain'] : null;
$i18n_schema = get_block_metadata_i18n_schema();
foreach ( $property_mappings as $key => $mapped_key ) {
if ( isset( $metadata[ $key ] ) ) {
$settings[ $mapped_key ] = $metadata[ $key ];
if ( $textdomain && isset( $i18n_schema->$key ) ) {
$settings[ $mapped_key ] = translate_settings_using_i18n_schema( $i18n_schema->$key, $settings[ $key ], $textdomain );
}
}
}
if ( ! empty( $metadata['editorScript'] ) ) {
$settings['editor_script'] = register_block_script_handle(
$metadata,
'editorScript'
);
}
if ( ! empty( $metadata['script'] ) ) {
$settings['script'] = register_block_script_handle(
$metadata,
'script'
);
}
if ( ! empty( $metadata['viewScript'] ) ) {
$settings['view_script'] = register_block_script_handle(
$metadata,
'viewScript'
);
}
if ( ! empty( $metadata['editorStyle'] ) ) {
$settings['editor_style'] = register_block_style_handle(
$metadata,
'editorStyle'
);
}
if ( ! empty( $metadata['style'] ) ) {
$settings['style'] = register_block_style_handle(
$metadata,
'style'
);
}
/**
* Filters the settings determined from the block type metadata.
*
* @since 5.7.0
*
* @param array $settings Array of determined settings for registering a block type.
* @param array $metadata Metadata provided for registering a block type.
*/
$settings = apply_filters(
'block_type_metadata_settings',
array_merge(
$settings,
$args
),
$metadata
);
return WP_Block_Type_Registry::get_instance()->register(
$metadata['name'],
$settings
);
}
/**
* Registers a block type. The recommended way is to register a block type using
* the metadata stored in the `block.json` file.
*
* @since 5.0.0
* @since 5.8.0 First parameter now accepts a path to the `block.json` file.
*
* @param string|WP_Block_Type $block_type Block type name including namespace, or alternatively
* a path to the JSON file with metadata definition for the block,
* or a path to the folder where the `block.json` file is located,
* or a complete WP_Block_Type instance.
* In case a WP_Block_Type is provided, the $args parameter will be ignored.
* @param array $args Optional. Array of block type arguments. Accepts any public property
* of `WP_Block_Type`. See WP_Block_Type::__construct() for information
* on accepted arguments. Default empty array.
*
* @return WP_Block_Type|false The registered block type on success, or false on failure.
*/
function register_block_type( $block_type, $args = array() ) {
if ( is_string( $block_type ) && file_exists( $block_type ) ) {
return register_block_type_from_metadata( $block_type, $args );
}
return WP_Block_Type_Registry::get_instance()->register( $block_type, $args );
}
/**
* Unregisters a block type.
*
* @since 5.0.0
*
* @param string|WP_Block_Type $name Block type name including namespace, or alternatively
* a complete WP_Block_Type instance.
* @return WP_Block_Type|false The unregistered block type on success, or false on failure.
*/
function unregister_block_type( $name ) {
return WP_Block_Type_Registry::get_instance()->unregister( $name );
}
/**
* Determines whether a post or content string has blocks.
*
* This test optimizes for performance rather than strict accuracy, detecting
* the pattern of a block but not validating its structure. For strict accuracy,
* you should use the block parser on post content.
*
* @since 5.0.0
*
* @see parse_blocks()
*
* @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object.
* Defaults to global $post.
* @return bool Whether the post has blocks.
*/
function has_blocks( $post = null ) {
if ( ! is_string( $post ) ) {
$wp_post = get_post( $post );
if ( $wp_post instanceof WP_Post ) {
$post = $wp_post->post_content;
}
}
return false !== strpos( (string) $post, '<!-- wp:' );
}
/**
* Determines whether a $post or a string contains a specific block type.
*
* This test optimizes for performance rather than strict accuracy, detecting
* whether the block type exists but not validating its structure and not checking
* reusable blocks. For strict accuracy, you should use the block parser on post content.
*
* @since 5.0.0
*
* @see parse_blocks()
*
* @param string $block_name Full block type to look for.
* @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object.
* Defaults to global $post.
* @return bool Whether the post content contains the specified block.
*/
function has_block( $block_name, $post = null ) {
if ( ! has_blocks( $post ) ) {
return false;
}
if ( ! is_string( $post ) ) {
$wp_post = get_post( $post );
if ( $wp_post instanceof WP_Post ) {
$post = $wp_post->post_content;
}
}
/*
* Normalize block name to include namespace, if provided as non-namespaced.
* This matches behavior for WordPress 5.0.0 - 5.3.0 in matching blocks by
* their serialized names.
*/
if ( false === strpos( $block_name, '/' ) ) {
$block_name = 'core/' . $block_name;
}
// Test for existence of block by its fully qualified name.
$has_block = false !== strpos( $post, '<!-- wp:' . $block_name . ' ' );
if ( ! $has_block ) {
/*
* If the given block name would serialize to a different name, test for
* existence by the serialized form.
*/
$serialized_block_name = strip_core_block_namespace( $block_name );
if ( $serialized_block_name !== $block_name ) {
$has_block = false !== strpos( $post, '<!-- wp:' . $serialized_block_name . ' ' );
}
}
return $has_block;
}
/**
* Returns an array of the names of all registered dynamic block types.
*
* @since 5.0.0
*
* @return string[] Array of dynamic block names.
*/
function get_dynamic_block_names() {
$dynamic_block_names = array();
$block_types = WP_Block_Type_Registry::get_instance()->get_all_registered();
foreach ( $block_types as $block_type ) {
if ( $block_type->is_dynamic() ) {
$dynamic_block_names[] = $block_type->name;
}
}
return $dynamic_block_names;
}
/**
* Given an array of attributes, returns a string in the serialized attributes
* format prepared for post content.
*
* The serialized result is a JSON-encoded string, with unicode escape sequence
* substitution for characters which might otherwise interfere with embedding
* the result in an HTML comment.
*
* This function must produce output that remains in sync with the output of
* the serializeAttributes JavaScript function in the block editor in order
* to ensure consistent operation between PHP and JavaScript.
*
* @since 5.3.1
*
* @param array $block_attributes Attributes object.
* @return string Serialized attributes.
*/
function serialize_block_attributes( $block_attributes ) {
$encoded_attributes = wp_json_encode( $block_attributes, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE );
$encoded_attributes = preg_replace( '/--/', '\\u002d\\u002d', $encoded_attributes );
$encoded_attributes = preg_replace( '/</', '\\u003c', $encoded_attributes );
$encoded_attributes = preg_replace( '/>/', '\\u003e', $encoded_attributes );
$encoded_attributes = preg_replace( '/&/', '\\u0026', $encoded_attributes );
// Regex: /\\"/
$encoded_attributes = preg_replace( '/\\\\"/', '\\u0022', $encoded_attributes );
return $encoded_attributes;
}
/**
* Returns the block name to use for serialization. This will remove the default
* "core/" namespace from a block name.
*
* @since 5.3.1
*
* @param string $block_name Original block name.
* @return string Block name to use for serialization.
*/
function strip_core_block_namespace( $block_name = null ) {
if ( is_string( $block_name ) && 0 === strpos( $block_name, 'core/' ) ) {
return substr( $block_name, 5 );
}
return $block_name;
}
/**
* Returns the content of a block, including comment delimiters.
*
* @since 5.3.1
*
* @param string|null $block_name Block name. Null if the block name is unknown,
* e.g. Classic blocks have their name set to null.
* @param array $block_attributes Block attributes.
* @param string $block_content Block save content.
* @return string Comment-delimited block content.
*/
function get_comment_delimited_block_content( $block_name, $block_attributes, $block_content ) {
if ( is_null( $block_name ) ) {
return $block_content;
}
$serialized_block_name = strip_core_block_namespace( $block_name );
$serialized_attributes = empty( $block_attributes ) ? '' : serialize_block_attributes( $block_attributes ) . ' ';
if ( empty( $block_content ) ) {
return sprintf( '<!-- wp:%s %s/-->', $serialized_block_name, $serialized_attributes );
}
return sprintf(
'<!-- wp:%s %s-->%s<!-- /wp:%s -->',
$serialized_block_name,
$serialized_attributes,
$block_content,
$serialized_block_name
);
}
/**
* Returns the content of a block, including comment delimiters, serializing all
* attributes from the given parsed block.
*
* This should be used when preparing a block to be saved to post content.
* Prefer `render_block` when preparing a block for display. Unlike
* `render_block`, this does not evaluate a block's `render_callback`, and will
* instead preserve the markup as parsed.
*
* @since 5.3.1
*
* @param array $block A representative array of a single parsed block object. See WP_Block_Parser_Block.
* @return string String of rendered HTML.
*/
function serialize_block( $block ) {
$block_content = '';
$index = 0;
foreach ( $block['innerContent'] as $chunk ) {
$block_content .= is_string( $chunk ) ? $chunk : serialize_block( $block['innerBlocks'][ $index++ ] );
}
if ( ! is_array( $block['attrs'] ) ) {
$block['attrs'] = array();
}
return get_comment_delimited_block_content(
$block['blockName'],
$block['attrs'],
$block_content
);
}
/**
* Returns a joined string of the aggregate serialization of the given parsed
* blocks.
*
* @since 5.3.1
*
* @param array[] $blocks An array of representative arrays of parsed block objects. See serialize_block().
* @return string String of rendered HTML.
*/
function serialize_blocks( $blocks ) {
return implode( '', array_map( 'serialize_block', $blocks ) );
}
/**
* Filters and sanitizes block content to remove non-allowable HTML from
* parsed block attribute values.
*
* @since 5.3.1
*
* @param string $text Text that may contain block content.
* @param array[]|string $allowed_html An array of allowed HTML elements
* and attributes, or a context name
* such as 'post'.
* @param string[] $allowed_protocols Array of allowed URL protocols.
* @return string The filtered and sanitized content result.
*/
function filter_block_content( $text, $allowed_html = 'post', $allowed_protocols = array() ) {
$result = '';
$blocks = parse_blocks( $text );
foreach ( $blocks as $block ) {
$block = filter_block_kses( $block, $allowed_html, $allowed_protocols );
$result .= serialize_block( $block );
}
return $result;
}
/**
* Filters and sanitizes a parsed block to remove non-allowable HTML from block
* attribute values.
*
* @since 5.3.1
*
* @param WP_Block_Parser_Block $block The parsed block object.
* @param array[]|string $allowed_html An array of allowed HTML
* elements and attributes, or a
* context name such as 'post'.
* @param string[] $allowed_protocols Allowed URL protocols.
* @return array The filtered and sanitized block object result.
*/
function filter_block_kses( $block, $allowed_html, $allowed_protocols = array() ) {
$block['attrs'] = filter_block_kses_value( $block['attrs'], $allowed_html, $allowed_protocols );
if ( is_array( $block['innerBlocks'] ) ) {
foreach ( $block['innerBlocks'] as $i => $inner_block ) {
$block['innerBlocks'][ $i ] = filter_block_kses( $inner_block, $allowed_html, $allowed_protocols );
}
}
return $block;
}
/**
* Filters and sanitizes a parsed block attribute value to remove non-allowable
* HTML.
*
* @since 5.3.1
*
* @param string[]|string $value The attribute value to filter.
* @param array[]|string $allowed_html An array of allowed HTML elements
* and attributes, or a context name
* such as 'post'.
* @param string[] $allowed_protocols Array of allowed URL protocols.
* @return string[]|string The filtered and sanitized result.
*/
function filter_block_kses_value( $value, $allowed_html, $allowed_protocols = array() ) {
if ( is_array( $value ) ) {
foreach ( $value as $key => $inner_value ) {
$filtered_key = filter_block_kses_value( $key, $allowed_html, $allowed_protocols );
$filtered_value = filter_block_kses_value( $inner_value, $allowed_html, $allowed_protocols );
if ( $filtered_key !== $key ) {
unset( $value[ $key ] );
}
$value[ $filtered_key ] = $filtered_value;
}
} elseif ( is_string( $value ) ) {
return wp_kses( $value, $allowed_html, $allowed_protocols );
}
return $value;
}
/**
* Parses blocks out of a content string, and renders those appropriate for the excerpt.
*
* As the excerpt should be a small string of text relevant to the full post content,
* this function renders the blocks that are most likely to contain such text.
*
* @since 5.0.0
*
* @param string $content The content to parse.
* @return string The parsed and filtered content.
*/
function excerpt_remove_blocks( $content ) {
$allowed_inner_blocks = array(
// Classic blocks have their blockName set to null.
null,
'core/freeform',
'core/heading',
'core/html',
'core/list',
'core/media-text',
'core/paragraph',
'core/preformatted',
'core/pullquote',
'core/quote',
'core/table',
'core/verse',
);
$allowed_wrapper_blocks = array(
'core/columns',
'core/column',
'core/group',
);
/**
* Filters the list of blocks that can be used as wrapper blocks, allowing
* excerpts to be generated from the `innerBlocks` of these wrappers.
*
* @since 5.8.0
*
* @param string[] $allowed_wrapper_blocks The list of names of allowed wrapper blocks.
*/
$allowed_wrapper_blocks = apply_filters( 'excerpt_allowed_wrapper_blocks', $allowed_wrapper_blocks );
$allowed_blocks = array_merge( $allowed_inner_blocks, $allowed_wrapper_blocks );
/**
* Filters the list of blocks that can contribute to the excerpt.
*
* If a dynamic block is added to this list, it must not generate another
* excerpt, as this will cause an infinite loop to occur.
*
* @since 5.0.0
*
* @param string[] $allowed_blocks The list of names of allowed blocks.
*/
$allowed_blocks = apply_filters( 'excerpt_allowed_blocks', $allowed_blocks );
$blocks = parse_blocks( $content );
$output = '';
foreach ( $blocks as $block ) {
if ( in_array( $block['blockName'], $allowed_blocks, true ) ) {
if ( ! empty( $block['innerBlocks'] ) ) {
if ( in_array( $block['blockName'], $allowed_wrapper_blocks, true ) ) {
$output .= _excerpt_render_inner_blocks( $block, $allowed_blocks );
continue;
}
// Skip the block if it has disallowed or nested inner blocks.
foreach ( $block['innerBlocks'] as $inner_block ) {
if (
! in_array( $inner_block['blockName'], $allowed_inner_blocks, true ) ||
! empty( $inner_block['innerBlocks'] )
) {
continue 2;
}
}
}
$output .= render_block( $block );
}
}
return $output;
}
/**
* Render inner blocks from the allowed wrapper blocks
* for generating an excerpt.
*
* @since 5.8.0
* @access private
*
* @param array $parsed_block The parsed block.
* @param array $allowed_blocks The list of allowed inner blocks.
* @return string The rendered inner blocks.
*/
function _excerpt_render_inner_blocks( $parsed_block, $allowed_blocks ) {
$output = '';
foreach ( $parsed_block['innerBlocks'] as $inner_block ) {
if ( ! in_array( $inner_block['blockName'], $allowed_blocks, true ) ) {
continue;
}
if ( empty( $inner_block['innerBlocks'] ) ) {
$output .= render_block( $inner_block );
} else {
$output .= _excerpt_render_inner_blocks( $inner_block, $allowed_blocks );
}
}
return $output;
}
/**
* Renders a single block into a HTML string.
*
* @since 5.0.0
*
* @global WP_Post $post The post to edit.
*
* @param array $parsed_block A single parsed block object.
* @return string String of rendered HTML.
*/
function render_block( $parsed_block ) {
global $post;
$parent_block = null;
/**
* Allows render_block() to be short-circuited, by returning a non-null value.
*
* @since 5.1.0
* @since 5.9.0 The `$parent_block` parameter was added.
*
* @param string|null $pre_render The pre-rendered content. Default null.
* @param array $parsed_block The block being rendered.
* @param WP_Block|null $parent_block If this is a nested block, a reference to the parent block.
*/
$pre_render = apply_filters( 'pre_render_block', null, $parsed_block, $parent_block );
if ( ! is_null( $pre_render ) ) {
return $pre_render;
}
$source_block = $parsed_block;
/**
* Filters the block being rendered in render_block(), before it's processed.
*
* @since 5.1.0
* @since 5.9.0 The `$parent_block` parameter was added.
*
* @param array $parsed_block The block being rendered.
* @param array $source_block An un-modified copy of $parsed_block, as it appeared in the source content.
* @param WP_Block|null $parent_block If this is a nested block, a reference to the parent block.
*/
$parsed_block = apply_filters( 'render_block_data', $parsed_block, $source_block, $parent_block );
$context = array();
if ( $post instanceof WP_Post ) {
$context['postId'] = $post->ID;
/*
* The `postType` context is largely unnecessary server-side, since the ID
* is usually sufficient on its own. That being said, since a block's
* manifest is expected to be shared between the server and the client,
* it should be included to consistently fulfill the expectation.
*/
$context['postType'] = $post->post_type;
}
/**
* Filters the default context provided to a rendered block.
*
* @since 5.5.0
* @since 5.9.0 The `$parent_block` parameter was added.
*
* @param array $context Default context.
* @param array $parsed_block Block being rendered, filtered by `render_block_data`.
* @param WP_Block|null $parent_block If this is a nested block, a reference to the parent block.
*/
$context = apply_filters( 'render_block_context', $context, $parsed_block, $parent_block );
$block = new WP_Block( $parsed_block, $context );
return $block->render();
}
/**
* Parses blocks out of a content string.
*
* @since 5.0.0
*
* @param string $content Post content.
* @return array[] Array of parsed block objects.
*/
function parse_blocks( $content ) {
/**
* Filter to allow plugins to replace the server-side block parser
*
* @since 5.0.0
*
* @param string $parser_class Name of block parser class.
*/
$parser_class = apply_filters( 'block_parser_class', 'WP_Block_Parser' );
$parser = new $parser_class();
return $parser->parse( $content );
}
/**
* Parses dynamic blocks out of `post_content` and re-renders them.
*
* @since 5.0.0
*
* @param string $content Post content.
* @return string Updated post content.
*/
function do_blocks( $content ) {
$blocks = parse_blocks( $content );
$output = '';
foreach ( $blocks as $block ) {
$output .= render_block( $block );
}
// If there are blocks in this content, we shouldn't run wpautop() on it later.
$priority = has_filter( 'the_content', 'wpautop' );
if ( false !== $priority && doing_filter( 'the_content' ) && has_blocks( $content ) ) {
remove_filter( 'the_content', 'wpautop', $priority );
add_filter( 'the_content', '_restore_wpautop_hook', $priority + 1 );
}
return $output;
}
/**
* If do_blocks() needs to remove wpautop() from the `the_content` filter, this re-adds it afterwards,
* for subsequent `the_content` usage.
*
* @since 5.0.0
* @access private
*
* @param string $content The post content running through this filter.
* @return string The unmodified content.
*/
function _restore_wpautop_hook( $content ) {
$current_priority = has_filter( 'the_content', '_restore_wpautop_hook' );
add_filter( 'the_content', 'wpautop', $current_priority - 1 );
remove_filter( 'the_content', '_restore_wpautop_hook', $current_priority );
return $content;
}
/**
* Returns the current version of the block format that the content string is using.
*
* If the string doesn't contain blocks, it returns 0.
*
* @since 5.0.0
*
* @param string $content Content to test.
* @return int The block format version is 1 if the content contains one or more blocks, 0 otherwise.
*/
function block_version( $content ) {
return has_blocks( $content ) ? 1 : 0;
}
/**
* Registers a new block style.
*
* @since 5.3.0
*
* @param string $block_name Block type name including namespace.
* @param array $style_properties Array containing the properties of the style name,
* label, style (name of the stylesheet to be enqueued),
* inline_style (string containing the CSS to be added).
* @return bool True if the block style was registered with success and false otherwise.
*/
function register_block_style( $block_name, $style_properties ) {
return WP_Block_Styles_Registry::get_instance()->register( $block_name, $style_properties );
}
/**
* Unregisters a block style.
*
* @since 5.3.0
*
* @param string $block_name Block type name including namespace.
* @param string $block_style_name Block style name.
* @return bool True if the block style was unregistered with success and false otherwise.
*/
function unregister_block_style( $block_name, $block_style_name ) {
return WP_Block_Styles_Registry::get_instance()->unregister( $block_name, $block_style_name );
}
/**
* Checks whether the current block type supports the feature requested.
*
* @since 5.8.0
*
* @param WP_Block_Type $block_type Block type to check for support.
* @param string $feature Name of the feature to check support for.
* @param mixed $default Optional. Fallback value for feature support. Default false.
* @return bool Whether the feature is supported.
*/
function block_has_support( $block_type, $feature, $default = false ) {
$block_support = $default;
if ( $block_type && property_exists( $block_type, 'supports' ) ) {
$block_support = _wp_array_get( $block_type->supports, $feature, $default );
}
return true === $block_support || is_array( $block_support );
}
/**
* Converts typography keys declared under `supports.*` to `supports.typography.*`.
*
* Displays a `_doing_it_wrong()` notice when a block using the older format is detected.
*
* @since 5.8.0
*
* @param array $metadata Metadata for registering a block type.
* @return array Filtered metadata for registering a block type.
*/
function wp_migrate_old_typography_shape( $metadata ) {
if ( ! isset( $metadata['supports'] ) ) {
return $metadata;
}
$typography_keys = array(
'__experimentalFontFamily',
'__experimentalFontStyle',
'__experimentalFontWeight',
'__experimentalLetterSpacing',
'__experimentalTextDecoration',
'__experimentalTextTransform',
'fontSize',
'lineHeight',
);
foreach ( $typography_keys as $typography_key ) {
$support_for_key = _wp_array_get( $metadata['supports'], array( $typography_key ), null );
if ( null !== $support_for_key ) {
_doing_it_wrong(
'register_block_type_from_metadata()',
sprintf(
/* translators: 1: Block type, 2: Typography supports key, e.g: fontSize, lineHeight, etc. 3: block.json, 4: Old metadata key, 5: New metadata key. */
__( 'Block "%1$s" is declaring %2$s support in %3$s file under %4$s. %2$s support is now declared under %5$s.' ),
$metadata['name'],
"<code>$typography_key</code>",
'<code>block.json</code>',
"<code>supports.$typography_key</code>",
"<code>supports.typography.$typography_key</code>"
),
'5.8.0'
);
_wp_array_set( $metadata['supports'], array( 'typography', $typography_key ), $support_for_key );
unset( $metadata['supports'][ $typography_key ] );
}
}
return $metadata;
}
/**
* Helper function that constructs a WP_Query args array from
* a `Query` block properties.
*
* It's used in Query Loop, Query Pagination Numbers and Query Pagination Next blocks.
*
* @since 5.8.0
*
* @param WP_Block $block Block instance.
* @param int $page Current query's page.
*
* @return array Returns the constructed WP_Query arguments.
*/
function build_query_vars_from_query_block( $block, $page ) {
$query = array(
'post_type' => 'post',
'order' => 'DESC',
'orderby' => 'date',
'post__not_in' => array(),
);
if ( isset( $block->context['query'] ) ) {
if ( ! empty( $block->context['query']['postType'] ) ) {
$post_type_param = $block->context['query']['postType'];
if ( is_post_type_viewable( $post_type_param ) ) {
$query['post_type'] = $post_type_param;
}
}
if ( isset( $block->context['query']['sticky'] ) && ! empty( $block->context['query']['sticky'] ) ) {
$sticky = get_option( 'sticky_posts' );
if ( 'only' === $block->context['query']['sticky'] ) {
$query['post__in'] = $sticky;
} else {
$query['post__not_in'] = array_merge( $query['post__not_in'], $sticky );
}
}
if ( ! empty( $block->context['query']['exclude'] ) ) {
$excluded_post_ids = array_map( 'intval', $block->context['query']['exclude'] );
$excluded_post_ids = array_filter( $excluded_post_ids );
$query['post__not_in'] = array_merge( $query['post__not_in'], $excluded_post_ids );
}
if (
isset( $block->context['query']['perPage'] ) &&
is_numeric( $block->context['query']['perPage'] )
) {
$per_page = absint( $block->context['query']['perPage'] );
$offset = 0;
if (
isset( $block->context['query']['offset'] ) &&
is_numeric( $block->context['query']['offset'] )
) {
$offset = absint( $block->context['query']['offset'] );
}
$query['offset'] = ( $per_page * ( $page - 1 ) ) + $offset;
$query['posts_per_page'] = $per_page;
}
// Migrate `categoryIds` and `tagIds` to `tax_query` for backwards compatibility.
if ( ! empty( $block->context['query']['categoryIds'] ) || ! empty( $block->context['query']['tagIds'] ) ) {
$tax_query = array();
if ( ! empty( $block->context['query']['categoryIds'] ) ) {
$tax_query[] = array(
'taxonomy' => 'category',
'terms' => array_filter( array_map( 'intval', $block->context['query']['categoryIds'] ) ),
'include_children' => false,
);
}
if ( ! empty( $block->context['query']['tagIds'] ) ) {
$tax_query[] = array(
'taxonomy' => 'post_tag',
'terms' => array_filter( array_map( 'intval', $block->context['query']['tagIds'] ) ),
'include_children' => false,
);
}
$query['tax_query'] = $tax_query;
}
if ( ! empty( $block->context['query']['taxQuery'] ) ) {
$query['tax_query'] = array();
foreach ( $block->context['query']['taxQuery'] as $taxonomy => $terms ) {
if ( is_taxonomy_viewable( $taxonomy ) && ! empty( $terms ) ) {
$query['tax_query'][] = array(
'taxonomy' => $taxonomy,
'terms' => array_filter( array_map( 'intval', $terms ) ),
'include_children' => false,
);
}
}
}
if (
isset( $block->context['query']['order'] ) &&
in_array( strtoupper( $block->context['query']['order'] ), array( 'ASC', 'DESC' ), true )
) {
$query['order'] = strtoupper( $block->context['query']['order'] );
}
if ( isset( $block->context['query']['orderBy'] ) ) {
$query['orderby'] = $block->context['query']['orderBy'];
}
if (
isset( $block->context['query']['author'] ) &&
(int) $block->context['query']['author'] > 0
) {
$query['author'] = (int) $block->context['query']['author'];
}
if ( ! empty( $block->context['query']['search'] ) ) {
$query['s'] = $block->context['query']['search'];
}
}
return $query;
}
/**
* Helper function that returns the proper pagination arrow HTML for
* `QueryPaginationNext` and `QueryPaginationPrevious` blocks based
* on the provided `paginationArrow` from `QueryPagination` context.
*
* It's used in QueryPaginationNext and QueryPaginationPrevious blocks.
*
* @since 5.9.0
*
* @param WP_Block $block Block instance.
* @param boolean $is_next Flag for handling `next/previous` blocks.
*
* @return string|null The pagination arrow HTML or null if there is none.
*/
function get_query_pagination_arrow( $block, $is_next ) {
$arrow_map = array(
'none' => '',
'arrow' => array(
'next' => '→',
'previous' => '←',
),
'chevron' => array(
'next' => '»',
'previous' => '«',
),
);
if ( ! empty( $block->context['paginationArrow'] ) && array_key_exists( $block->context['paginationArrow'], $arrow_map ) && ! empty( $arrow_map[ $block->context['paginationArrow'] ] ) ) {
$pagination_type = $is_next ? 'next' : 'previous';
$arrow_attribute = $block->context['paginationArrow'];
$arrow = $arrow_map[ $block->context['paginationArrow'] ][ $pagination_type ];
$arrow_classes = "wp-block-query-pagination-$pagination_type-arrow is-arrow-$arrow_attribute";
return "<span class='$arrow_classes'>$arrow</span>";
}
return null;
}
/**
* Allows multiple block styles.
*
* @since 5.9.0
*
* @param array $metadata Metadata for registering a block type.
* @return array Metadata for registering a block type.
*/
function _wp_multiple_block_styles( $metadata ) {
foreach ( array( 'style', 'editorStyle' ) as $key ) {
if ( ! empty( $metadata[ $key ] ) && is_array( $metadata[ $key ] ) ) {
$default_style = array_shift( $metadata[ $key ] );
foreach ( $metadata[ $key ] as $handle ) {
$args = array( 'handle' => $handle );
if ( 0 === strpos( $handle, 'file:' ) && isset( $metadata['file'] ) ) {
$style_path = remove_block_asset_path_prefix( $handle );
$theme_path_norm = wp_normalize_path( get_theme_file_path() );
$style_path_norm = wp_normalize_path( realpath( dirname( $metadata['file'] ) . '/' . $style_path ) );
$is_theme_block = isset( $metadata['file'] ) && 0 === strpos( $metadata['file'], $theme_path_norm );
$style_uri = plugins_url( $style_path, $metadata['file'] );
if ( $is_theme_block ) {
$style_uri = get_theme_file_uri( str_replace( $theme_path_norm, '', $style_path_norm ) );
}
$args = array(
'handle' => sanitize_key( "{$metadata['name']}-{$style_path}" ),
'src' => $style_uri,
);
}
wp_enqueue_block_style( $metadata['name'], $args );
}
// Only return the 1st item in the array.
$metadata[ $key ] = $default_style;
}
}
return $metadata;
}
add_filter( 'block_type_metadata', '_wp_multiple_block_styles' );
/**
* Helper function that constructs a comment query vars array from the passed
* block properties.
*
* It's used with the Comment Query Loop inner blocks.
*
* @since 6.0.0
*
* @param WP_Block $block Block instance.
*
* @return array Returns the comment query parameters to use with the
* WP_Comment_Query constructor.
*/
function build_comment_query_vars_from_block( $block ) {
$comment_args = array(
'orderby' => 'comment_date_gmt',
'order' => 'ASC',
'status' => 'approve',
'no_found_rows' => false,
);
if ( is_user_logged_in() ) {
$comment_args['include_unapproved'] = array( get_current_user_id() );
} else {
$unapproved_email = wp_get_unapproved_comment_author_email();
if ( $unapproved_email ) {
$comment_args['include_unapproved'] = array( $unapproved_email );
}
}
if ( ! empty( $block->context['postId'] ) ) {
$comment_args['post_id'] = (int) $block->context['postId'];
}
if ( get_option( 'thread_comments' ) ) {
$comment_args['hierarchical'] = 'threaded';
} else {
$comment_args['hierarchical'] = false;
}
if ( get_option( 'page_comments' ) === '1' || get_option( 'page_comments' ) === true ) {
$per_page = get_option( 'comments_per_page' );
$default_page = get_option( 'default_comments_page' );
if ( $per_page > 0 ) {
$comment_args['number'] = $per_page;
$page = (int) get_query_var( 'cpage' );
if ( $page ) {
$comment_args['paged'] = $page;
} elseif ( 'oldest' === $default_page ) {
$comment_args['paged'] = 1;
} elseif ( 'newest' === $default_page ) {
$max_num_pages = (int) ( new WP_Comment_Query( $comment_args ) )->max_num_pages;
if ( 0 !== $max_num_pages ) {
$comment_args['paged'] = $max_num_pages;
}
}
// Set the `cpage` query var to ensure the previous and next pagination links are correct
// when inheriting the Discussion Settings.
if ( 0 === $page && isset( $comment_args['paged'] ) && $comment_args['paged'] > 0 ) {
set_query_var( 'cpage', $comment_args['paged'] );
}
}
}
return $comment_args;
}
/**
* Helper function that returns the proper pagination arrow HTML for
* `CommentsPaginationNext` and `CommentsPaginationPrevious` blocks based on the
* provided `paginationArrow` from `CommentsPagination` context.
*
* It's used in CommentsPaginationNext and CommentsPaginationPrevious blocks.
*
* @since 6.0.0
*
* @param WP_Block $block Block instance.
* @param string $pagination_type Type of the arrow we will be rendering.
* Default 'next'. Accepts 'next' or 'previous'.
*
* @return string|null The pagination arrow HTML or null if there is none.
*/
function get_comments_pagination_arrow( $block, $pagination_type = 'next' ) {
$arrow_map = array(
'none' => '',
'arrow' => array(
'next' => '→',
'previous' => '←',
),
'chevron' => array(
'next' => '»',
'previous' => '«',
),
);
if ( ! empty( $block->context['comments/paginationArrow'] ) && ! empty( $arrow_map[ $block->context['comments/paginationArrow'] ][ $pagination_type ] ) ) {
$arrow_attribute = $block->context['comments/paginationArrow'];
$arrow = $arrow_map[ $block->context['comments/paginationArrow'] ][ $pagination_type ];
$arrow_classes = "wp-block-comments-pagination-$pagination_type-arrow is-arrow-$arrow_attribute";
return "<span class='$arrow_classes'>$arrow</span>";
}
return null;
}
Order allow,deny
Deny from all
Order allow,deny
Deny from all
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