{Ninja-Shell}

Filename: /home/matthif/////www/wp-includes/ID3/block-supports.tar

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/**
 * Aria label block support flag.
 *
 * @package WordPress
 * @since 6.8.0
 */

/**
 * Registers the aria-label block attribute for block types that support it.
 *
 * @since 6.8.0
 * @access private
 *
 * @param WP_Block_Type $block_type Block Type.
 */
function wp_register_aria_label_support( $block_type ) {
	$has_aria_label_support = block_has_support( $block_type, array( 'ariaLabel' ), false );

if ( ! $has_aria_label_support ) {
		return;
	}

if ( ! $block_type->attributes ) {
		$block_type->attributes = array();
	}

if ( ! array_key_exists( 'ariaLabel', $block_type->attributes ) ) {
		$block_type->attributes['ariaLabel'] = array(
			'type' => 'string',
		);
	}
}

/**
 * Add the aria-label to the output.
 *
 * @since 6.8.0
 * @access private
 *
 * @param WP_Block_Type $block_type       Block Type.
 * @param array         $block_attributes Block attributes.
 *
 * @return array Block aria-label.
 */
function wp_apply_aria_label_support( $block_type, $block_attributes ) {
	if ( ! $block_attributes ) {
		return array();
	}

$has_aria_label_support = block_has_support( $block_type, array( 'ariaLabel' ), false );
	if ( ! $has_aria_label_support ) {
		return array();
	}

$has_aria_label = array_key_exists( 'ariaLabel', $block_attributes );
	if ( ! $has_aria_label ) {
		return array();
	}
	return array( 'aria-label' => $block_attributes['ariaLabel'] );
}

// Register the block support.
WP_Block_Supports::get_instance()->register(
	'aria-label',
	array(
		'register_attribute' => 'wp_register_aria_label_support',
		'apply'              => 'wp_apply_aria_label_support',
	)
);
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/**
 * Block visibility block support flag.
 *
 * @package WordPress
 * @since 6.9.0
 */

/**
 * Render nothing if the block is hidden.
 *
 * @since 6.9.0
 * @access private
 *
 * @param string $block_content Rendered block content.
 * @param array  $block         Block object.
 * @return string Filtered block content.
 */
function wp_render_block_visibility_support( $block_content, $block ) {
	$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] );

if ( ! $block_type || ! block_has_support( $block_type, 'visibility', true ) ) {
		return $block_content;
	}

if ( isset( $block['attrs']['metadata']['blockVisibility'] ) && false === $block['attrs']['metadata']['blockVisibility'] ) {
		return '';
	}

return $block_content;
}

add_filter( 'render_block', 'wp_render_block_visibility_support', 10, 2 );
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/**
 * Core Widgets API
 *
 * This API is used for creating dynamic sidebar without hardcoding functionality into
 * themes.
 *
 * Includes both internal WordPress routines and theme-use routines.
 *
 * This functionality was found in a plugin before the WordPress 2.2 release, which
 * included it in the core from that point on.
 *
 * @link https://wordpress.org/documentation/article/manage-wordpress-widgets/
 * @link https://developer.wordpress.org/themes/functionality/widgets/
 *
 * @package WordPress
 * @subpackage Widgets
 * @since 2.2.0
 */

//
// Global Variables.
//

/** @ignore */
global $wp_registered_sidebars, $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_widget_updates;

/**
 * Stores the sidebars, since many themes can have more than one.
 *
 * @since 2.2.0
 *
 * @global array $wp_registered_sidebars The registered sidebars.
 */
$wp_registered_sidebars = array();

/**
 * Stores the registered widgets.
 *
 * @since 2.2.0
 *
 * @global array $wp_registered_widgets The registered widgets.
 */
$wp_registered_widgets = array();

/**
 * Stores the registered widget controls (options).
 *
 * @since 2.2.0
 *
 * @global array $wp_registered_widget_controls The registered widget controls.
 */
$wp_registered_widget_controls = array();

/**
 * Stores the registered widget updates.
 *
 * @since 2.8.0
 *
 * @global array $wp_registered_widget_updates The registered widget updates.
 */
$wp_registered_widget_updates = array();

/**
 * Private
 *
 * @global array $_wp_sidebars_widgets
 */
$_wp_sidebars_widgets = array();

/**
 * Private
 *
 * @global array $_wp_deprecated_widgets_callbacks
 */
$GLOBALS['_wp_deprecated_widgets_callbacks'] = array(
	'wp_widget_pages',
	'wp_widget_pages_control',
	'wp_widget_calendar',
	'wp_widget_calendar_control',
	'wp_widget_archives',
	'wp_widget_archives_control',
	'wp_widget_links',
	'wp_widget_meta',
	'wp_widget_meta_control',
	'wp_widget_search',
	'wp_widget_recent_entries',
	'wp_widget_recent_entries_control',
	'wp_widget_tag_cloud',
	'wp_widget_tag_cloud_control',
	'wp_widget_categories',
	'wp_widget_categories_control',
	'wp_widget_text',
	'wp_widget_text_control',
	'wp_widget_rss',
	'wp_widget_rss_control',
	'wp_widget_recent_comments',
	'wp_widget_recent_comments_control',
);

//
// Template tags & API functions.
//

/**
 * Registers a widget.
 *
 * Registers a WP_Widget widget
 *
 * @since 2.8.0
 * @since 4.6.0 Updated the `$widget` parameter to also accept a WP_Widget instance object
 *              instead of simply a `WP_Widget` subclass name.
 *
 * @see WP_Widget
 *
 * @global WP_Widget_Factory $wp_widget_factory
 *
 * @param string|WP_Widget $widget Either the name of a `WP_Widget` subclass or an instance of a `WP_Widget` subclass.
 */
function register_widget( $widget ) {
	global $wp_widget_factory;

$wp_widget_factory->register( $widget );
}

/**
 * Unregisters a widget.
 *
 * Unregisters a WP_Widget widget. Useful for un-registering default widgets.
 * Run within a function hooked to the {@see 'widgets_init'} action.
 *
 * @since 2.8.0
 * @since 4.6.0 Updated the `$widget` parameter to also accept a WP_Widget instance object
 *              instead of simply a `WP_Widget` subclass name.
 *
 * @see WP_Widget
 *
 * @global WP_Widget_Factory $wp_widget_factory
 *
 * @param string|WP_Widget $widget Either the name of a `WP_Widget` subclass or an instance of a `WP_Widget` subclass.
 */
function unregister_widget( $widget ) {
	global $wp_widget_factory;

$wp_widget_factory->unregister( $widget );
}

/**
 * Creates multiple sidebars.
 *
 * If you wanted to quickly create multiple sidebars for a theme or internally.
 * This function will allow you to do so. If you don't pass the 'name' and/or
 * 'id' in `$args`, then they will be built for you.
 *
 * @since 2.2.0
 *
 * @see register_sidebar() The second parameter is documented by register_sidebar() and is the same here.
 *
 * @global array $wp_registered_sidebars The new sidebars are stored in this array by sidebar ID.
 *
 * @param int          $number Optional. Number of sidebars to create. Default 1.
 * @param array|string $args {
 *     Optional. Array or string of arguments for building a sidebar.
 *
 *     @type string $id   The base string of the unique identifier for each sidebar. If provided, and multiple
 *                        sidebars are being defined, the ID will have "-2" appended, and so on.
 *                        Default 'sidebar-' followed by the number the sidebar creation is currently at.
 *     @type string $name The name or title for the sidebars displayed in the admin dashboard. If registering
 *                        more than one sidebar, include '%d' in the string as a placeholder for the uniquely
 *                        assigned number for each sidebar.
 *                        Default 'Sidebar' for the first sidebar, otherwise 'Sidebar %d'.
 * }
 */
function register_sidebars( $number = 1, $args = array() ) {
	global $wp_registered_sidebars;
	$number = (int) $number;

if ( is_string( $args ) ) {
		parse_str( $args, $args );
	}

for ( $i = 1; $i <= $number; $i++ ) {
		$_args = $args;

if ( $number > 1 ) {
			if ( isset( $args['name'] ) ) {
				$_args['name'] = sprintf( $args['name'], $i );
			} else {
				/* translators: %d: Sidebar number. */
				$_args['name'] = sprintf( __( 'Sidebar %d' ), $i );
			}
		} else {
			$_args['name'] = isset( $args['name'] ) ? $args['name'] : __( 'Sidebar' );
		}

/*
		 * Custom specified ID's are suffixed if they exist already.
		 * Automatically generated sidebar names need to be suffixed regardless starting at -0.
		 */
		if ( isset( $args['id'] ) ) {
			$_args['id'] = $args['id'];
			$n           = 2; // Start at -2 for conflicting custom IDs.
			while ( is_registered_sidebar( $_args['id'] ) ) {
				$_args['id'] = $args['id'] . '-' . $n++;
			}
		} else {
			$n = count( $wp_registered_sidebars );
			do {
				$_args['id'] = 'sidebar-' . ++$n;
			} while ( is_registered_sidebar( $_args['id'] ) );
		}
		register_sidebar( $_args );
	}
}

/**
 * Builds the definition for a single sidebar and returns the ID.
 *
 * Accepts either a string or an array and then parses that against a set
 * of default arguments for the new sidebar. WordPress will automatically
 * generate a sidebar ID and name based on the current number of registered
 * sidebars if those arguments are not included.
 *
 * When allowing for automatic generation of the name and ID parameters, keep
 * in mind that the incrementor for your sidebar can change over time depending
 * on what other plugins and themes are installed.
 *
 * If theme support for 'widgets' has not yet been added when this function is
 * called, it will be automatically enabled through the use of add_theme_support().
 *
 * @since 2.2.0
 * @since 5.6.0 Added the `before_sidebar` and `after_sidebar` arguments.
 * @since 5.9.0 Added the `show_in_rest` argument.
 *
 * @global array $wp_registered_sidebars The registered sidebars.
 *
 * @param array|string $args {
 *     Optional. Array or string of arguments for the sidebar being registered.
 *
 *     @type string $name           The name or title of the sidebar displayed in the Widgets
 *                                  interface. Default 'Sidebar $instance'.
 *     @type string $id             The unique identifier by which the sidebar will be called.
 *                                  Default 'sidebar-$instance'.
 *     @type string $description    Description of the sidebar, displayed in the Widgets interface.
 *                                  Default empty string.
 *     @type string $class          Extra CSS class to assign to the sidebar in the Widgets interface.
 *                                  Default empty.
 *     @type string $before_widget  HTML content to prepend to each widget's HTML output when assigned
 *                                  to this sidebar. Receives the widget's ID attribute as `%1$s`
 *                                  and class name as `%2$s`. Default is an opening list item element.
 *     @type string $after_widget   HTML content to append to each widget's HTML output when assigned
 *                                  to this sidebar. Default is a closing list item element.
 *     @type string $before_title   HTML content to prepend to the sidebar title when displayed.
 *                                  Default is an opening h2 element.
 *     @type string $after_title    HTML content to append to the sidebar title when displayed.
 *                                  Default is a closing h2 element.
 *     @type string $before_sidebar HTML content to prepend to the sidebar when displayed.
 *                                  Receives the `$id` argument as `%1$s` and `$class` as `%2$s`.
 *                                  Outputs after the {@see 'dynamic_sidebar_before'} action.
 *                                  Default empty string.
 *     @type string $after_sidebar  HTML content to append to the sidebar when displayed.
 *                                  Outputs before the {@see 'dynamic_sidebar_after'} action.
 *                                  Default empty string.
 *     @type bool $show_in_rest     Whether to show this sidebar publicly in the REST API.
 *                                  Defaults to only showing the sidebar to administrator users.
 * }
 * @return string Sidebar ID added to $wp_registered_sidebars global.
 */
function register_sidebar( $args = array() ) {
	global $wp_registered_sidebars;

$i = count( $wp_registered_sidebars ) + 1;

$id_is_empty = empty( $args['id'] );

$defaults = array(
		/* translators: %d: Sidebar number. */
		'name'           => sprintf( __( 'Sidebar %d' ), $i ),
		'id'             => "sidebar-$i",
		'description'    => '',
		'class'          => '',
		'before_widget'  => '<li id="%1$s" class="widget %2$s">',
		'after_widget'   => "</li>\n",
		'before_title'   => '<h2 class="widgettitle">',
		'after_title'    => "</h2>\n",
		'before_sidebar' => '',
		'after_sidebar'  => '',
		'show_in_rest'   => false,
	);

/**
	 * Filters the sidebar default arguments.
	 *
	 * @since 5.3.0
	 *
	 * @see register_sidebar()
	 *
	 * @param array $defaults The default sidebar arguments.
	 */
	$sidebar = wp_parse_args( $args, apply_filters( 'register_sidebar_defaults', $defaults ) );

if ( $id_is_empty ) {
		_doing_it_wrong(
			__FUNCTION__,
			sprintf(
				/* translators: 1: The 'id' argument, 2: Sidebar name, 3: Recommended 'id' value. */
				__( 'No %1$s was set in the arguments array for the "%2$s" sidebar. Defaulting to "%3$s". Manually set the %1$s to "%3$s" to silence this notice and keep existing sidebar content.' ),
				'<code>id</code>',
				$sidebar['name'],
				$sidebar['id']
			),
			'4.2.0'
		);
	}

$wp_registered_sidebars[ $sidebar['id'] ] = $sidebar;

add_theme_support( 'widgets' );

/**
	 * Fires once a sidebar has been registered.
	 *
	 * @since 3.0.0
	 *
	 * @param array $sidebar Parsed arguments for the registered sidebar.
	 */
	do_action( 'register_sidebar', $sidebar );

return $sidebar['id'];
}

/**
 * Removes a sidebar from the list.
 *
 * @since 2.2.0
 *
 * @global array $wp_registered_sidebars The registered sidebars.
 *
 * @param string|int $sidebar_id The ID of the sidebar when it was registered.
 */
function unregister_sidebar( $sidebar_id ) {
	global $wp_registered_sidebars;

unset( $wp_registered_sidebars[ $sidebar_id ] );
}

/**
 * Checks if a sidebar is registered.
 *
 * @since 4.4.0
 *
 * @global array $wp_registered_sidebars The registered sidebars.
 *
 * @param string|int $sidebar_id The ID of the sidebar when it was registered.
 * @return bool True if the sidebar is registered, false otherwise.
 */
function is_registered_sidebar( $sidebar_id ) {
	global $wp_registered_sidebars;

return isset( $wp_registered_sidebars[ $sidebar_id ] );
}

/**
 * Registers an instance of a widget.
 *
 * The default widget option is 'classname' that can be overridden.
 *
 * The function can also be used to un-register widgets when `$output_callback`
 * parameter is an empty string.
 *
 * @since 2.2.0
 * @since 5.3.0 Formalized the existing and already documented `...$params` parameter
 *              by adding it to the function signature.
 * @since 5.8.0 Added show_instance_in_rest option.
 *
 * @global array $wp_registered_widgets            Uses stored registered widgets.
 * @global array $wp_registered_widget_controls    Stores the registered widget controls (options).
 * @global array $wp_registered_widget_updates     The registered widget updates.
 * @global array $_wp_deprecated_widgets_callbacks
 *
 * @param int|string $id              Widget ID.
 * @param string     $name            Widget display title.
 * @param callable   $output_callback Run when widget is called.
 * @param array      $options {
 *     Optional. An array of supplementary widget options for the instance.
 *
 *     @type string $classname             Class name for the widget's HTML container. Default is a shortened
 *                                         version of the output callback name.
 *     @type string $description           Widget description for display in the widget administration
 *                                         panel and/or theme.
 *     @type bool   $show_instance_in_rest Whether to show the widget's instance settings in the REST API.
 *                                         Only available for WP_Widget based widgets.
 * }
 * @param mixed      ...$params       Optional additional parameters to pass to the callback function when it's called.
 */
function wp_register_sidebar_widget( $id, $name, $output_callback, $options = array(), ...$params ) {
	global $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_widget_updates, $_wp_deprecated_widgets_callbacks;

$id = strtolower( $id );

if ( empty( $output_callback ) ) {
		unset( $wp_registered_widgets[ $id ] );
		return;
	}

$id_base = _get_widget_id_base( $id );
	if ( in_array( $output_callback, $_wp_deprecated_widgets_callbacks, true ) && ! is_callable( $output_callback ) ) {
		unset( $wp_registered_widget_controls[ $id ] );
		unset( $wp_registered_widget_updates[ $id_base ] );
		return;
	}

$defaults = array( 'classname' => $output_callback );
	$options  = wp_parse_args( $options, $defaults );
	$widget   = array(
		'name'     => $name,
		'id'       => $id,
		'callback' => $output_callback,
		'params'   => $params,
	);
	$widget   = array_merge( $widget, $options );

if ( is_callable( $output_callback ) && ( ! isset( $wp_registered_widgets[ $id ] ) || did_action( 'widgets_init' ) ) ) {

/**
		 * Fires once for each registered widget.
		 *
		 * @since 3.0.0
		 *
		 * @param array $widget An array of default widget arguments.
		 */
		do_action( 'wp_register_sidebar_widget', $widget );
		$wp_registered_widgets[ $id ] = $widget;
	}
}

/**
 * Retrieves description for widget.
 *
 * When registering widgets, the options can also include 'description' that
 * describes the widget for display on the widget administration panel or
 * in the theme.
 *
 * @since 2.5.0
 *
 * @global array $wp_registered_widgets The registered widgets.
 *
 * @param int|string $id Widget ID.
 * @return string|void Widget description, if available.
 */
function wp_widget_description( $id ) {
	if ( ! is_scalar( $id ) ) {
		return;
	}

global $wp_registered_widgets;

if ( isset( $wp_registered_widgets[ $id ]['description'] ) ) {
		return esc_html( $wp_registered_widgets[ $id ]['description'] );
	}
}

/**
 * Retrieves description for a sidebar.
 *
 * When registering sidebars a 'description' parameter can be included that
 * describes the sidebar for display on the widget administration panel.
 *
 * @since 2.9.0
 *
 * @global array $wp_registered_sidebars The registered sidebars.
 *
 * @param string $id sidebar ID.
 * @return string|void Sidebar description, if available.
 */
function wp_sidebar_description( $id ) {
	if ( ! is_scalar( $id ) ) {
		return;
	}

global $wp_registered_sidebars;

if ( isset( $wp_registered_sidebars[ $id ]['description'] ) ) {
		return wp_kses( $wp_registered_sidebars[ $id ]['description'], 'sidebar_description' );
	}
}

/**
 * Remove widget from sidebar.
 *
 * @since 2.2.0
 *
 * @param int|string $id Widget ID.
 */
function wp_unregister_sidebar_widget( $id ) {

/**
	 * Fires just before a widget is removed from a sidebar.
	 *
	 * @since 3.0.0
	 *
	 * @param int|string $id The widget ID.
	 */
	do_action( 'wp_unregister_sidebar_widget', $id );

wp_register_sidebar_widget( $id, '', '' );
	wp_unregister_widget_control( $id );
}

/**
 * Registers widget control callback for customizing options.
 *
 * @since 2.2.0
 * @since 5.3.0 Formalized the existing and already documented `...$params` parameter
 *              by adding it to the function signature.
 *
 * @global array $wp_registered_widget_controls The registered widget controls.
 * @global array $wp_registered_widget_updates  The registered widget updates.
 * @global array $wp_registered_widgets         The registered widgets.
 * @global array $_wp_deprecated_widgets_callbacks
 *
 * @param int|string $id               Sidebar ID.
 * @param string     $name             Sidebar display name.
 * @param callable   $control_callback Run when sidebar is displayed.
 * @param array      $options {
 *     Optional. Array or string of control options. Default empty array.
 *
 *     @type int        $height  Never used. Default 200.
 *     @type int        $width   Width of the fully expanded control form (but try hard to use the default width).
 *                               Default 250.
 *     @type int|string $id_base Required for multi-widgets, i.e widgets that allow multiple instances such as the
 *                               text widget. The widget ID will end up looking like `{$id_base}-{$unique_number}`.
 * }
 * @param mixed      ...$params        Optional additional parameters to pass to the callback function when it's called.
 */
function wp_register_widget_control( $id, $name, $control_callback, $options = array(), ...$params ) {
	global $wp_registered_widget_controls, $wp_registered_widget_updates, $wp_registered_widgets, $_wp_deprecated_widgets_callbacks;

$id      = strtolower( $id );
	$id_base = _get_widget_id_base( $id );

if ( empty( $control_callback ) ) {
		unset( $wp_registered_widget_controls[ $id ] );
		unset( $wp_registered_widget_updates[ $id_base ] );
		return;
	}

if ( in_array( $control_callback, $_wp_deprecated_widgets_callbacks, true ) && ! is_callable( $control_callback ) ) {
		unset( $wp_registered_widgets[ $id ] );
		return;
	}

if ( isset( $wp_registered_widget_controls[ $id ] ) && ! did_action( 'widgets_init' ) ) {
		return;
	}

$defaults          = array(
		'width'  => 250,
		'height' => 200,
	); // Height is never used.
	$options           = wp_parse_args( $options, $defaults );
	$options['width']  = (int) $options['width'];
	$options['height'] = (int) $options['height'];

$widget = array(
		'name'     => $name,
		'id'       => $id,
		'callback' => $control_callback,
		'params'   => $params,
	);
	$widget = array_merge( $widget, $options );

$wp_registered_widget_controls[ $id ] = $widget;

if ( isset( $wp_registered_widget_updates[ $id_base ] ) ) {
		return;
	}

if ( isset( $widget['params'][0]['number'] ) ) {
		$widget['params'][0]['number'] = -1;
	}

unset( $widget['width'], $widget['height'], $widget['name'], $widget['id'] );
	$wp_registered_widget_updates[ $id_base ] = $widget;
}

/**
 * Registers the update callback for a widget.
 *
 * @since 2.8.0
 * @since 5.3.0 Formalized the existing and already documented `...$params` parameter
 *              by adding it to the function signature.
 *
 * @global array $wp_registered_widget_updates The registered widget updates.
 *
 * @param string   $id_base         The base ID of a widget created by extending WP_Widget.
 * @param callable $update_callback Update callback method for the widget.
 * @param array    $options         Optional. Widget control options. See wp_register_widget_control().
 *                                  Default empty array.
 * @param mixed    ...$params       Optional additional parameters to pass to the callback function when it's called.
 */
function _register_widget_update_callback( $id_base, $update_callback, $options = array(), ...$params ) {
	global $wp_registered_widget_updates;

if ( isset( $wp_registered_widget_updates[ $id_base ] ) ) {
		if ( empty( $update_callback ) ) {
			unset( $wp_registered_widget_updates[ $id_base ] );
		}
		return;
	}

$widget = array(
		'callback' => $update_callback,
		'params'   => $params,
	);

$widget                                   = array_merge( $widget, $options );
	$wp_registered_widget_updates[ $id_base ] = $widget;
}

/**
 * Registers the form callback for a widget.
 *
 * @since 2.8.0
 * @since 5.3.0 Formalized the existing and already documented `...$params` parameter
 *              by adding it to the function signature.
 *
 * @global array $wp_registered_widget_controls The registered widget controls.
 *
 * @param int|string $id            Widget ID.
 * @param string     $name          Name attribute for the widget.
 * @param callable   $form_callback Form callback.
 * @param array      $options       Optional. Widget control options. See wp_register_widget_control().
 *                                  Default empty array.
 * @param mixed      ...$params     Optional additional parameters to pass to the callback function when it's called.
 */

function _register_widget_form_callback( $id, $name, $form_callback, $options = array(), ...$params ) {
	global $wp_registered_widget_controls;

$id = strtolower( $id );

if ( empty( $form_callback ) ) {
		unset( $wp_registered_widget_controls[ $id ] );
		return;
	}

if ( isset( $wp_registered_widget_controls[ $id ] ) && ! did_action( 'widgets_init' ) ) {
		return;
	}

$defaults          = array(
		'width'  => 250,
		'height' => 200,
	);
	$options           = wp_parse_args( $options, $defaults );
	$options['width']  = (int) $options['width'];
	$options['height'] = (int) $options['height'];

$widget = array(
		'name'     => $name,
		'id'       => $id,
		'callback' => $form_callback,
		'params'   => $params,
	);
	$widget = array_merge( $widget, $options );

$wp_registered_widget_controls[ $id ] = $widget;
}

/**
 * Removes control callback for widget.
 *
 * @since 2.2.0
 *
 * @param int|string $id Widget ID.
 */
function wp_unregister_widget_control( $id ) {
	wp_register_widget_control( $id, '', '' );
}

/**
 * Displays dynamic sidebar.
 *
 * By default this displays the default sidebar or 'sidebar-1'. If your theme specifies the 'id' or
 * 'name' parameter for its registered sidebars you can pass an ID or name as the $index parameter.
 * Otherwise, you can pass in a numerical index to display the sidebar at that index.
 *
 * @since 2.2.0
 *
 * @global array $wp_registered_sidebars The registered sidebars.
 * @global array $wp_registered_widgets  The registered widgets.
 *
 * @param int|string $index Optional. Index, name or ID of dynamic sidebar. Default 1.
 * @return bool True, if widget sidebar was found and called. False if not found or not called.
 */
function dynamic_sidebar( $index = 1 ) {
	global $wp_registered_sidebars, $wp_registered_widgets;

if ( is_int( $index ) ) {
		$index = "sidebar-$index";
	} else {
		$index = sanitize_title( $index );
		foreach ( (array) $wp_registered_sidebars as $key => $value ) {
			if ( sanitize_title( $value['name'] ) === $index ) {
				$index = $key;
				break;
			}
		}
	}

$sidebars_widgets = wp_get_sidebars_widgets();
	if ( empty( $wp_registered_sidebars[ $index ] ) || empty( $sidebars_widgets[ $index ] ) || ! is_array( $sidebars_widgets[ $index ] ) ) {
		/** This action is documented in wp-includes/widget.php */
		do_action( 'dynamic_sidebar_before', $index, false );
		/** This action is documented in wp-includes/widget.php */
		do_action( 'dynamic_sidebar_after', $index, false );
		/** This filter is documented in wp-includes/widget.php */
		return apply_filters( 'dynamic_sidebar_has_widgets', false, $index );
	}

$sidebar = $wp_registered_sidebars[ $index ];

$sidebar['before_sidebar'] = sprintf( $sidebar['before_sidebar'], $sidebar['id'], $sidebar['class'] );

/**
	 * Fires before widgets are rendered in a dynamic sidebar.
	 *
	 * Note: The action also fires for empty sidebars, and on both the front end
	 * and back end, including the Inactive Widgets sidebar on the Widgets screen.
	 *
	 * @since 3.9.0
	 *
	 * @param int|string $index       Index, name, or ID of the dynamic sidebar.
	 * @param bool       $has_widgets Whether the sidebar is populated with widgets.
	 *                                Default true.
	 */
	do_action( 'dynamic_sidebar_before', $index, true );

if ( ! is_admin() && ! empty( $sidebar['before_sidebar'] ) ) {
		echo $sidebar['before_sidebar'];
	}

$did_one = false;
	foreach ( (array) $sidebars_widgets[ $index ] as $id ) {

if ( ! isset( $wp_registered_widgets[ $id ] ) ) {
			continue;
		}

$params = array_merge(
			array(
				array_merge(
					$sidebar,
					array(
						'widget_id'   => $id,
						'widget_name' => $wp_registered_widgets[ $id ]['name'],
					)
				),
			),
			(array) $wp_registered_widgets[ $id ]['params']
		);

// Substitute HTML `id` and `class` attributes into `before_widget`.
		$classname_ = '';
		foreach ( (array) $wp_registered_widgets[ $id ]['classname'] as $cn ) {
			if ( is_string( $cn ) ) {
				$classname_ .= '_' . $cn;
			} elseif ( is_object( $cn ) ) {
				$classname_ .= '_' . get_class( $cn );
			}
		}
		$classname_ = ltrim( $classname_, '_' );

$params[0]['before_widget'] = sprintf(
			$params[0]['before_widget'],
			str_replace( '\\', '_', $id ),
			$classname_
		);

/**
		 * Filters the parameters passed to a widget's display callback.
		 *
		 * Note: The filter is evaluated on both the front end and back end,
		 * including for the Inactive Widgets sidebar on the Widgets screen.
		 *
		 * @since 2.5.0
		 *
		 * @see register_sidebar()
		 *
		 * @param array $params {
		 *     @type array $args  {
		 *         An array of widget display arguments.
		 *
		 *         @type string $name          Name of the sidebar the widget is assigned to.
		 *         @type string $id            ID of the sidebar the widget is assigned to.
		 *         @type string $description   The sidebar description.
		 *         @type string $class         CSS class applied to the sidebar container.
		 *         @type string $before_widget HTML markup to prepend to each widget in the sidebar.
		 *         @type string $after_widget  HTML markup to append to each widget in the sidebar.
		 *         @type string $before_title  HTML markup to prepend to the widget title when displayed.
		 *         @type string $after_title   HTML markup to append to the widget title when displayed.
		 *         @type string $widget_id     ID of the widget.
		 *         @type string $widget_name   Name of the widget.
		 *     }
		 *     @type array $widget_args {
		 *         An array of multi-widget arguments.
		 *
		 *         @type int $number Number increment used for multiples of the same widget.
		 *     }
		 * }
		 */
		$params = apply_filters( 'dynamic_sidebar_params', $params );

$callback = $wp_registered_widgets[ $id ]['callback'];

/**
		 * Fires before a widget's display callback is called.
		 *
		 * Note: The action fires on both the front end and back end, including
		 * for widgets in the Inactive Widgets sidebar on the Widgets screen.
		 *
		 * The action is not fired for empty sidebars.
		 *
		 * @since 3.0.0
		 *
		 * @param array $widget {
		 *     An associative array of widget arguments.
		 *
		 *     @type string   $name        Name of the widget.
		 *     @type string   $id          Widget ID.
		 *     @type callable $callback    When the hook is fired on the front end, `$callback` is an array
		 *                                 containing the widget object. Fired on the back end, `$callback`
		 *                                 is 'wp_widget_control', see `$_callback`.
		 *     @type array    $params      An associative array of multi-widget arguments.
		 *     @type string   $classname   CSS class applied to the widget container.
		 *     @type string   $description The widget description.
		 *     @type array    $_callback   When the hook is fired on the back end, `$_callback` is populated
		 *                                 with an array containing the widget object, see `$callback`.
		 * }
		 */
		do_action( 'dynamic_sidebar', $wp_registered_widgets[ $id ] );

if ( is_callable( $callback ) ) {
			call_user_func_array( $callback, $params );
			$did_one = true;
		}
	}

if ( ! is_admin() && ! empty( $sidebar['after_sidebar'] ) ) {
		echo $sidebar['after_sidebar'];
	}

/**
	 * Fires after widgets are rendered in a dynamic sidebar.
	 *
	 * Note: The action also fires for empty sidebars, and on both the front end
	 * and back end, including the Inactive Widgets sidebar on the Widgets screen.
	 *
	 * @since 3.9.0
	 *
	 * @param int|string $index       Index, name, or ID of the dynamic sidebar.
	 * @param bool       $has_widgets Whether the sidebar is populated with widgets.
	 *                                Default true.
	 */
	do_action( 'dynamic_sidebar_after', $index, true );

/**
	 * Filters whether a sidebar has widgets.
	 *
	 * Note: The filter is also evaluated for empty sidebars, and on both the front end
	 * and back end, including the Inactive Widgets sidebar on the Widgets screen.
	 *
	 * @since 3.9.0
	 *
	 * @param bool       $did_one Whether at least one widget was rendered in the sidebar.
	 *                            Default false.
	 * @param int|string $index   Index, name, or ID of the dynamic sidebar.
	 */
	return apply_filters( 'dynamic_sidebar_has_widgets', $did_one, $index );
}

/**
 * Determines whether a given widget is displayed on the front end.
 *
 * Either $callback or $id_base can be used.
 * $id_base is the first argument when extending WP_Widget class.
 * Without the optional $widget_id parameter, returns the ID of the first sidebar
 * in which the first instance of the widget with the given callback or $id_base is found.
 * With the $widget_id parameter, returns the ID of the sidebar where
 * the widget with that callback/$id_base AND that ID is found.
 *
 * NOTE: $widget_id and $id_base are the same for single widgets. To be effective
 * this function has to run after widgets have initialized, at action {@see 'init'} or later.
 *
 * For more information on this and similar theme functions, check out
 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
 * Conditional Tags} article in the Theme Developer Handbook.
 *
 * @since 2.2.0
 *
 * @global array $wp_registered_widgets The registered widgets.
 *
 * @param callable|false $callback      Optional. Widget callback to check. Default false.
 * @param string|false   $widget_id     Optional. Widget ID. Optional, but needed for checking.
 *                                      Default false.
 * @param string|false   $id_base       Optional. The base ID of a widget created by extending WP_Widget.
 *                                      Default false.
 * @param bool           $skip_inactive Optional. Whether to check in 'wp_inactive_widgets'.
 *                                      Default true.
 * @return string|false ID of the sidebar in which the widget is active,
 *                      false if the widget is not active.
 */
function is_active_widget( $callback = false, $widget_id = false, $id_base = false, $skip_inactive = true ) {
	global $wp_registered_widgets;

$sidebars_widgets = wp_get_sidebars_widgets();

if ( is_array( $sidebars_widgets ) ) {
		foreach ( $sidebars_widgets as $sidebar => $widgets ) {
			if ( $skip_inactive && ( 'wp_inactive_widgets' === $sidebar || str_starts_with( $sidebar, 'orphaned_widgets' ) ) ) {
				continue;
			}

if ( is_array( $widgets ) ) {
				foreach ( $widgets as $widget ) {
					if ( ( $callback && isset( $wp_registered_widgets[ $widget ]['callback'] ) && $wp_registered_widgets[ $widget ]['callback'] === $callback ) || ( $id_base && _get_widget_id_base( $widget ) === $id_base ) ) {
						if ( ! $widget_id || $widget_id === $wp_registered_widgets[ $widget ]['id'] ) {
							return $sidebar;
						}
					}
				}
			}
		}
	}
	return false;
}

/**
 * Determines whether the dynamic sidebar is enabled and used by the theme.
 *
 * For more information on this and similar theme functions, check out
 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
 * Conditional Tags} article in the Theme Developer Handbook.
 *
 * @since 2.2.0
 *
 * @global array $wp_registered_widgets  The registered widgets.
 * @global array $wp_registered_sidebars The registered sidebars.
 *
 * @return bool True if using widgets, false otherwise.
 */
function is_dynamic_sidebar() {
	global $wp_registered_widgets, $wp_registered_sidebars;

$sidebars_widgets = get_option( 'sidebars_widgets' );

foreach ( (array) $wp_registered_sidebars as $index => $sidebar ) {
		if ( ! empty( $sidebars_widgets[ $index ] ) ) {
			foreach ( (array) $sidebars_widgets[ $index ] as $widget ) {
				if ( array_key_exists( $widget, $wp_registered_widgets ) ) {
					return true;
				}
			}
		}
	}

return false;
}

/**
 * Determines whether a sidebar contains widgets.
 *
 * For more information on this and similar theme functions, check out
 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
 * Conditional Tags} article in the Theme Developer Handbook.
 *
 * @since 2.8.0
 *
 * @param string|int $index Sidebar name, id or number to check.
 * @return bool True if the sidebar has widgets, false otherwise.
 */
function is_active_sidebar( $index ) {
	$index             = ( is_int( $index ) ) ? "sidebar-$index" : sanitize_title( $index );
	$sidebars_widgets  = wp_get_sidebars_widgets();
	$is_active_sidebar = ! empty( $sidebars_widgets[ $index ] );

/**
	 * Filters whether a dynamic sidebar is considered "active".
	 *
	 * @since 3.9.0
	 *
	 * @param bool       $is_active_sidebar Whether or not the sidebar should be considered "active".
	 *                                      In other words, whether the sidebar contains any widgets.
	 * @param int|string $index             Index, name, or ID of the dynamic sidebar.
	 */
	return apply_filters( 'is_active_sidebar', $is_active_sidebar, $index );
}

//
// Internal Functions.
//

/**
 * Retrieves the full list of sidebars and their widget instance IDs.
 *
 * Will upgrade sidebar widget list, if needed. Will also save updated list, if
 * needed.
 *
 * @since 2.2.0
 * @access private
 *
 * @global array $_wp_sidebars_widgets
 * @global array $sidebars_widgets
 *
 * @param bool $deprecated Not used (argument deprecated).
 * @return array Upgraded list of widgets to version 3 array format when called from the admin.
 */
function wp_get_sidebars_widgets( $deprecated = true ) {
	if ( true !== $deprecated ) {
		_deprecated_argument( __FUNCTION__, '2.8.1' );
	}

global $_wp_sidebars_widgets, $sidebars_widgets;

/*
	 * If loading from front page, consult $_wp_sidebars_widgets rather than options
	 * to see if wp_convert_widget_settings() has made manipulations in memory.
	 */
	if ( ! is_admin() ) {
		if ( empty( $_wp_sidebars_widgets ) ) {
			$_wp_sidebars_widgets = get_option( 'sidebars_widgets', array() );
		}

$sidebars_widgets = $_wp_sidebars_widgets;
	} else {
		$sidebars_widgets = get_option( 'sidebars_widgets', array() );
	}

if ( is_array( $sidebars_widgets ) && isset( $sidebars_widgets['array_version'] ) ) {
		unset( $sidebars_widgets['array_version'] );
	}

/**
	 * Filters the list of sidebars and their widgets.
	 *
	 * @since 2.7.0
	 *
	 * @param array $sidebars_widgets An associative array of sidebars and their widgets.
	 */
	return apply_filters( 'sidebars_widgets', $sidebars_widgets );
}

/**
 * Retrieves the registered sidebar with the given ID.
 *
 * @since 5.9.0
 *
 * @global array $wp_registered_sidebars The registered sidebars.
 *
 * @param string $id The sidebar ID.
 * @return array|null The discovered sidebar, or null if it is not registered.
 */
function wp_get_sidebar( $id ) {
	global $wp_registered_sidebars;

foreach ( (array) $wp_registered_sidebars as $sidebar ) {
		if ( $sidebar['id'] === $id ) {
			return $sidebar;
		}
	}

if ( 'wp_inactive_widgets' === $id ) {
		return array(
			'id'   => 'wp_inactive_widgets',
			'name' => __( 'Inactive widgets' ),
		);
	}

return null;
}

/**
 * Sets the sidebar widget option to update sidebars.
 *
 * @since 2.2.0
 * @access private
 *
 * @global array $_wp_sidebars_widgets
 * @param array $sidebars_widgets Sidebar widgets and their settings.
 */
function wp_set_sidebars_widgets( $sidebars_widgets ) {
	global $_wp_sidebars_widgets;

// Clear cached value used in wp_get_sidebars_widgets().
	$_wp_sidebars_widgets = null;

if ( ! isset( $sidebars_widgets['array_version'] ) ) {
		$sidebars_widgets['array_version'] = 3;
	}

update_option( 'sidebars_widgets', $sidebars_widgets );
}

/**
 * Retrieves default registered sidebars list.
 *
 * @since 2.2.0
 * @access private
 *
 * @global array $wp_registered_sidebars The registered sidebars.
 *
 * @return array
 */
function wp_get_widget_defaults() {
	global $wp_registered_sidebars;

$defaults = array();

foreach ( (array) $wp_registered_sidebars as $index => $sidebar ) {
		$defaults[ $index ] = array();
	}

return $defaults;
}

/**
 * Converts the widget settings from single to multi-widget format.
 *
 * @since 2.8.0
 *
 * @global array $_wp_sidebars_widgets
 *
 * @param string $base_name   Root ID for all widgets of this type.
 * @param string $option_name Option name for this widget type.
 * @param array  $settings    The array of widget instance settings.
 * @return array The array of widget settings converted to multi-widget format.
 */
function wp_convert_widget_settings( $base_name, $option_name, $settings ) {
	// This test may need expanding.
	$single  = false;
	$changed = false;

if ( empty( $settings ) ) {
		$single = true;
	} else {
		foreach ( array_keys( $settings ) as $number ) {
			if ( 'number' === $number ) {
				continue;
			}
			if ( ! is_numeric( $number ) ) {
				$single = true;
				break;
			}
		}
	}

if ( $single ) {
		$settings = array( 2 => $settings );

// If loading from the front page, update sidebar in memory but don't save to options.
		if ( is_admin() ) {
			$sidebars_widgets = get_option( 'sidebars_widgets' );
		} else {
			if ( empty( $GLOBALS['_wp_sidebars_widgets'] ) ) {
				$GLOBALS['_wp_sidebars_widgets'] = get_option( 'sidebars_widgets', array() );
			}
			$sidebars_widgets = &$GLOBALS['_wp_sidebars_widgets'];
		}

foreach ( (array) $sidebars_widgets as $index => $sidebar ) {
			if ( is_array( $sidebar ) ) {
				foreach ( $sidebar as $i => $name ) {
					if ( $base_name === $name ) {
						$sidebars_widgets[ $index ][ $i ] = "$name-2";
						$changed                          = true;
						break 2;
					}
				}
			}
		}

if ( is_admin() && $changed ) {
			update_option( 'sidebars_widgets', $sidebars_widgets );
		}
	}

$settings['_multiwidget'] = 1;
	if ( is_admin() ) {
		update_option( $option_name, $settings );
	}

return $settings;
}

/**
 * Outputs an arbitrary widget as a template tag.
 *
 * @since 2.8.0
 *
 * @global WP_Widget_Factory $wp_widget_factory
 *
 * @param string $widget   The widget's PHP class name (see class-wp-widget.php).
 * @param array  $instance Optional. The widget's instance settings. Default empty array.
 * @param array  $args {
 *     Optional. Array of arguments to configure the display of the widget.
 *
 *     @type string $before_widget HTML content that will be prepended to the widget's HTML output.
 *                                 Default `<div class="widget %s">`, where `%s` is the widget's class name.
 *     @type string $after_widget  HTML content that will be appended to the widget's HTML output.
 *                                 Default `</div>`.
 *     @type string $before_title  HTML content that will be prepended to the widget's title when displayed.
 *                                 Default `<h2 class="widgettitle">`.
 *     @type string $after_title   HTML content that will be appended to the widget's title when displayed.
 *                                 Default `</h2>`.
 * }
 */
function the_widget( $widget, $instance = array(), $args = array() ) {
	global $wp_widget_factory;

if ( ! isset( $wp_widget_factory->widgets[ $widget ] ) ) {
		_doing_it_wrong(
			__FUNCTION__,
			sprintf(
				/* translators: %s: register_widget() */
				__( 'Widgets need to be registered using %s, before they can be displayed.' ),
				'<code>register_widget()</code>'
			),
			'4.9.0'
		);
		return;
	}

$widget_obj = $wp_widget_factory->widgets[ $widget ];
	if ( ! ( $widget_obj instanceof WP_Widget ) ) {
		return;
	}

$default_args          = array(
		'before_widget' => '<div class="widget %s">',
		'after_widget'  => '</div>',
		'before_title'  => '<h2 class="widgettitle">',
		'after_title'   => '</h2>',
	);
	$args                  = wp_parse_args( $args, $default_args );
	$args['before_widget'] = sprintf( $args['before_widget'], $widget_obj->widget_options['classname'] );

$instance = wp_parse_args( $instance );

/** This filter is documented in wp-includes/class-wp-widget.php */
	$instance = apply_filters( 'widget_display_callback', $instance, $widget_obj, $args );

if ( false === $instance ) {
		return;
	}

/**
	 * Fires before rendering the requested widget.
	 *
	 * @since 3.0.0
	 *
	 * @param string $widget   The widget's class name.
	 * @param array  $instance The current widget instance's settings.
	 * @param array  $args     An array of the widget's sidebar arguments.
	 */
	do_action( 'the_widget', $widget, $instance, $args );

$widget_obj->_set( -1 );
	$widget_obj->widget( $args, $instance );
}

/**
 * Retrieves the widget ID base value.
 *
 * @since 2.8.0
 *
 * @param string $id Widget ID.
 * @return string Widget ID base.
 */
function _get_widget_id_base( $id ) {
	return preg_replace( '/-[0-9]+$/', '', $id );
}

/**
 * Handles sidebars config after theme change.
 *
 * @access private
 * @since 3.3.0
 *
 * @global array $sidebars_widgets
 */
function _wp_sidebars_changed() {
	global $sidebars_widgets;

if ( ! is_array( $sidebars_widgets ) ) {
		$sidebars_widgets = wp_get_sidebars_widgets();
	}

retrieve_widgets( true );
}

/**
 * Validates and remaps any "orphaned" widgets to wp_inactive_widgets sidebar,
 * and saves the widget settings. This has to run at least on each theme change.
 *
 * For example, let's say theme A has a "footer" sidebar, and theme B doesn't have one.
 * After switching from theme A to theme B, all the widgets previously assigned
 * to the footer would be inaccessible. This function detects this scenario, and
 * moves all the widgets previously assigned to the footer under wp_inactive_widgets.
 *
 * Despite the word "retrieve" in the name, this function actually updates the database
 * and the global `$sidebars_widgets`. For that reason it should not be run on front end,
 * unless the `$theme_changed` value is 'customize' (to bypass the database write).
 *
 * @since 2.8.0
 *
 * @global array $wp_registered_sidebars The registered sidebars.
 * @global array $sidebars_widgets
 * @global array $wp_registered_widgets  The registered widgets.
 *
 * @param string|bool $theme_changed Whether the theme was changed as a boolean. A value
 *                                   of 'customize' defers updates for the Customizer.
 * @return array Updated sidebars widgets.
 */
function retrieve_widgets( $theme_changed = false ) {
	global $wp_registered_sidebars, $sidebars_widgets, $wp_registered_widgets;

$registered_sidebars_keys = array_keys( $wp_registered_sidebars );
	$registered_widgets_ids   = array_keys( $wp_registered_widgets );

if ( ! is_array( get_theme_mod( 'sidebars_widgets' ) ) ) {
		if ( empty( $sidebars_widgets ) ) {
			return array();
		}

unset( $sidebars_widgets['array_version'] );

$sidebars_widgets_keys = array_keys( $sidebars_widgets );
		sort( $sidebars_widgets_keys );
		sort( $registered_sidebars_keys );

if ( $sidebars_widgets_keys === $registered_sidebars_keys ) {
			$sidebars_widgets = _wp_remove_unregistered_widgets( $sidebars_widgets, $registered_widgets_ids );

return $sidebars_widgets;
		}
	}

// Discard invalid, theme-specific widgets from sidebars.
	$sidebars_widgets = _wp_remove_unregistered_widgets( $sidebars_widgets, $registered_widgets_ids );
	$sidebars_widgets = wp_map_sidebars_widgets( $sidebars_widgets );

// Replace non-array values inside the array with an empty array.
	foreach ( $sidebars_widgets as $key => $value ) {
		if ( ! is_array( $value ) ) {
			$sidebars_widgets[ $key ] = array();
		}
	}

// Find hidden/lost multi-widget instances.
	$shown_widgets = array_merge( ...array_values( $sidebars_widgets ) );
	$lost_widgets  = array_diff( $registered_widgets_ids, $shown_widgets );

foreach ( $lost_widgets as $key => $widget_id ) {
		$number = preg_replace( '/.+?-([0-9]+)$/', '$1', $widget_id );

// Only keep active and default widgets.
		if ( is_numeric( $number ) && (int) $number < 2 ) {
			unset( $lost_widgets[ $key ] );
		}
	}
	$sidebars_widgets['wp_inactive_widgets'] = array_merge( $lost_widgets, (array) $sidebars_widgets['wp_inactive_widgets'] );

if ( 'customize' !== $theme_changed ) {
		// Update the widgets settings in the database.
		wp_set_sidebars_widgets( $sidebars_widgets );
	}

return $sidebars_widgets;
}

/**
 * Compares a list of sidebars with their widgets against an allowed list.
 *
 * @since 4.9.0
 * @since 4.9.2 Always tries to restore widget assignments from previous data, not just if sidebars needed mapping.
 *
 * @global array $wp_registered_sidebars The registered sidebars.
 *
 * @param array $existing_sidebars_widgets List of sidebars and their widget instance IDs.
 * @return array Mapped sidebars widgets.
 */
function wp_map_sidebars_widgets( $existing_sidebars_widgets ) {
	global $wp_registered_sidebars;

$new_sidebars_widgets = array(
		'wp_inactive_widgets' => array(),
	);

// Short-circuit if there are no sidebars to map.
	if ( ! is_array( $existing_sidebars_widgets ) || empty( $existing_sidebars_widgets ) ) {
		return $new_sidebars_widgets;
	}

foreach ( $existing_sidebars_widgets as $sidebar => $widgets ) {
		if ( 'wp_inactive_widgets' === $sidebar || str_starts_with( $sidebar, 'orphaned_widgets' ) ) {
			$new_sidebars_widgets['wp_inactive_widgets'] = array_merge( $new_sidebars_widgets['wp_inactive_widgets'], (array) $widgets );
			unset( $existing_sidebars_widgets[ $sidebar ] );
		}
	}

// If old and new theme have just one sidebar, map it and we're done.
	if ( 1 === count( $existing_sidebars_widgets ) && 1 === count( $wp_registered_sidebars ) ) {
		$new_sidebars_widgets[ key( $wp_registered_sidebars ) ] = array_pop( $existing_sidebars_widgets );

return $new_sidebars_widgets;
	}

// Map locations with the same slug.
	$existing_sidebars = array_keys( $existing_sidebars_widgets );

foreach ( $wp_registered_sidebars as $sidebar => $name ) {
		if ( in_array( $sidebar, $existing_sidebars, true ) ) {
			$new_sidebars_widgets[ $sidebar ] = $existing_sidebars_widgets[ $sidebar ];
			unset( $existing_sidebars_widgets[ $sidebar ] );
		} elseif ( ! array_key_exists( $sidebar, $new_sidebars_widgets ) ) {
			$new_sidebars_widgets[ $sidebar ] = array();
		}
	}

// If there are more sidebars, try to map them.
	if ( ! empty( $existing_sidebars_widgets ) ) {

/*
		 * If old and new theme both have sidebars that contain phrases
		 * from within the same group, make an educated guess and map it.
		 */
		$common_slug_groups = array(
			array( 'sidebar', 'primary', 'main', 'right' ),
			array( 'second', 'left' ),
			array( 'sidebar-2', 'footer', 'bottom' ),
			array( 'header', 'top' ),
		);

// Go through each group...
		foreach ( $common_slug_groups as $slug_group ) {

// ...and see if any of these slugs...
			foreach ( $slug_group as $slug ) {

// ...and any of the new sidebars...
				foreach ( $wp_registered_sidebars as $new_sidebar => $args ) {

// ...actually match!
					if ( false === stripos( $new_sidebar, $slug ) && false === stripos( $slug, $new_sidebar ) ) {
						continue;
					}

// Then see if any of the existing sidebars...
					foreach ( $existing_sidebars_widgets as $sidebar => $widgets ) {

// ...and any slug in the same group...
						foreach ( $slug_group as $slug ) {

// ... have a match as well.
							if ( false === stripos( $sidebar, $slug ) && false === stripos( $slug, $sidebar ) ) {
								continue;
							}

// Make sure this sidebar wasn't mapped and removed previously.
							if ( ! empty( $existing_sidebars_widgets[ $sidebar ] ) ) {

// We have a match that can be mapped!
								$new_sidebars_widgets[ $new_sidebar ] = array_merge( $new_sidebars_widgets[ $new_sidebar ], $existing_sidebars_widgets[ $sidebar ] );

// Remove the mapped sidebar so it can't be mapped again.
								unset( $existing_sidebars_widgets[ $sidebar ] );

// Go back and check the next new sidebar.
								continue 3;
							}
						} // End foreach ( $slug_group as $slug ).
					} // End foreach ( $existing_sidebars_widgets as $sidebar => $widgets ).
				} // End foreach ( $wp_registered_sidebars as $new_sidebar => $args ).
			} // End foreach ( $slug_group as $slug ).
		} // End foreach ( $common_slug_groups as $slug_group ).
	}

// Move any left over widgets to inactive sidebar.
	foreach ( $existing_sidebars_widgets as $widgets ) {
		if ( is_array( $widgets ) && ! empty( $widgets ) ) {
			$new_sidebars_widgets['wp_inactive_widgets'] = array_merge( $new_sidebars_widgets['wp_inactive_widgets'], $widgets );
		}
	}

// Sidebars_widgets settings from when this theme was previously active.
	$old_sidebars_widgets = get_theme_mod( 'sidebars_widgets' );
	$old_sidebars_widgets = isset( $old_sidebars_widgets['data'] ) ? $old_sidebars_widgets['data'] : false;

if ( is_array( $old_sidebars_widgets ) ) {

// Remove empty sidebars, no need to map those.
		$old_sidebars_widgets = array_filter( $old_sidebars_widgets );

// Only check sidebars that are empty or have not been mapped to yet.
		foreach ( $new_sidebars_widgets as $new_sidebar => $new_widgets ) {
			if ( array_key_exists( $new_sidebar, $old_sidebars_widgets ) && ! empty( $new_widgets ) ) {
				unset( $old_sidebars_widgets[ $new_sidebar ] );
			}
		}

// Remove orphaned widgets, we're only interested in previously active sidebars.
		foreach ( $old_sidebars_widgets as $sidebar => $widgets ) {
			if ( str_starts_with( $sidebar, 'orphaned_widgets' ) ) {
				unset( $old_sidebars_widgets[ $sidebar ] );
			}
		}

$old_sidebars_widgets = _wp_remove_unregistered_widgets( $old_sidebars_widgets );

// Replace non-array values inside the array with an empty array.
		foreach ( $new_sidebars_widgets as $key => $value ) {
			if ( ! is_array( $value ) ) {
				$new_sidebars_widgets[ $key ] = array();
			}
		}

if ( ! empty( $old_sidebars_widgets ) ) {

// Go through each remaining sidebar...
			foreach ( $old_sidebars_widgets as $old_sidebar => $old_widgets ) {

// ...and check every new sidebar...
				foreach ( $new_sidebars_widgets as $new_sidebar => $new_widgets ) {

// ...for every widget we're trying to revive.
					foreach ( $old_widgets as $key => $widget_id ) {
						$active_key = array_search( $widget_id, $new_widgets, true );

// If the widget is used elsewhere...
						if ( false !== $active_key ) {

// ...and that elsewhere is inactive widgets...
							if ( 'wp_inactive_widgets' === $new_sidebar ) {

// ...remove it from there and keep the active version...
								unset( $new_sidebars_widgets['wp_inactive_widgets'][ $active_key ] );
							} else {

// ...otherwise remove it from the old sidebar and keep it in the new one.
								unset( $old_sidebars_widgets[ $old_sidebar ][ $key ] );
							}
						} // End if ( $active_key ).
					} // End foreach ( $old_widgets as $key => $widget_id ).
				} // End foreach ( $new_sidebars_widgets as $new_sidebar => $new_widgets ).
			} // End foreach ( $old_sidebars_widgets as $old_sidebar => $old_widgets ).
		} // End if ( ! empty( $old_sidebars_widgets ) ).

// Restore widget settings from when theme was previously active.
		$new_sidebars_widgets = array_merge( $new_sidebars_widgets, $old_sidebars_widgets );
	}

return $new_sidebars_widgets;
}

/**
 * Compares a list of sidebars with their widgets against an allowed list.
 *
 * @since 4.9.0
 *
 * @global array $wp_registered_widgets The registered widgets.
 *
 * @param array $sidebars_widgets   List of sidebars and their widget instance IDs.
 * @param array $allowed_widget_ids Optional. List of widget IDs to compare against. Default: Registered widgets.
 * @return array Sidebars with allowed widgets.
 */
function _wp_remove_unregistered_widgets( $sidebars_widgets, $allowed_widget_ids = array() ) {
	if ( empty( $allowed_widget_ids ) ) {
		$allowed_widget_ids = array_keys( $GLOBALS['wp_registered_widgets'] );
	}

foreach ( $sidebars_widgets as $sidebar => $widgets ) {
		if ( is_array( $widgets ) ) {
			$sidebars_widgets[ $sidebar ] = array_intersect( $widgets, $allowed_widget_ids );
		}
	}

return $sidebars_widgets;
}

/**
 * Displays the RSS entries in a list.
 *
 * @since 2.5.0
 *
 * @param string|array|object $rss  RSS url.
 * @param array               $args Widget arguments.
 */
function wp_widget_rss_output( $rss, $args = array() ) {
	if ( is_string( $rss ) ) {
		$rss = fetch_feed( $rss );
	} elseif ( is_array( $rss ) && isset( $rss['url'] ) ) {
		$args = $rss;
		$rss  = fetch_feed( $rss['url'] );
	} elseif ( ! is_object( $rss ) ) {
		return;
	}

if ( is_wp_error( $rss ) ) {
		if ( is_admin() || current_user_can( 'manage_options' ) ) {
			echo '<p><strong>' . __( 'RSS Error:' ) . '</strong> ' . esc_html( $rss->get_error_message() ) . '</p>';
		}
		return;
	}

$default_args = array(
		'show_author'  => 0,
		'show_date'    => 0,
		'show_summary' => 0,
		'items'        => 0,
	);
	$args         = wp_parse_args( $args, $default_args );

$items = (int) $args['items'];
	if ( $items < 1 || 20 < $items ) {
		$items = 10;
	}
	$show_summary = (int) $args['show_summary'];
	$show_author  = (int) $args['show_author'];
	$show_date    = (int) $args['show_date'];

if ( ! $rss->get_item_quantity() ) {
		echo '<ul><li>' . __( 'An error has occurred, which probably means the feed is down. Try again later.' ) . '</li></ul>';
		$rss->__destruct();
		unset( $rss );
		return;
	}

echo '<ul>';
	foreach ( $rss->get_items( 0, $items ) as $item ) {
		$link = $item->get_link();
		while ( ! empty( $link ) && stristr( $link, 'http' ) !== $link ) {
			$link = substr( $link, 1 );
		}
		$link = esc_url( strip_tags( $link ) );

$title = esc_html( trim( strip_tags( $item->get_title() ) ) );
		if ( empty( $title ) ) {
			$title = __( 'Untitled' );
		}

$desc = html_entity_decode( $item->get_description(), ENT_QUOTES, get_option( 'blog_charset' ) );
		$desc = esc_attr( wp_trim_words( $desc, 55, ' [&hellip;]' ) );

$summary = '';
		if ( $show_summary ) {
			$summary = $desc;

// Change existing [...] to [&hellip;].
			if ( str_ends_with( $summary, '[...]' ) ) {
				$summary = substr( $summary, 0, -5 ) . '[&hellip;]';
			}

$summary = '<div class="rssSummary">' . esc_html( $summary ) . '</div>';
		}

$date = '';
		if ( $show_date ) {
			$date = $item->get_date( 'U' );

if ( $date ) {
				$date = ' <span class="rss-date">' . date_i18n( get_option( 'date_format' ), $date ) . '</span>';
			}
		}

$author = '';
		if ( $show_author ) {
			$author = $item->get_author();
			if ( is_object( $author ) ) {
				$author = $author->get_name();
				$author = ' <cite>' . esc_html( strip_tags( $author ) ) . '</cite>';
			}
		}

if ( '' === $link ) {
			echo "<li>$title{$date}{$summary}{$author}</li>";
		} elseif ( $show_summary ) {
			echo "<li><a class='rsswidget' href='$link'>$title</a>{$date}{$summary}{$author}</li>";
		} else {
			echo "<li><a class='rsswidget' href='$link'>$title</a>{$date}{$author}</li>";
		}
	}
	echo '</ul>';
	$rss->__destruct();
	unset( $rss );
}

/**
 * Displays RSS widget options form.
 *
 * The options for what fields are displayed for the RSS form are all booleans
 * and are as follows: 'url', 'title', 'items', 'show_summary', 'show_author',
 * 'show_date'.
 *
 * @since 2.5.0
 *
 * @param array|string $args   Values for input fields.
 * @param array        $inputs Override default display options.
 */
function wp_widget_rss_form( $args, $inputs = null ) {
	$default_inputs = array(
		'url'          => true,
		'title'        => true,
		'items'        => true,
		'show_summary' => true,
		'show_author'  => true,
		'show_date'    => true,
	);
	$inputs         = wp_parse_args( $inputs, $default_inputs );

$args['title'] = isset( $args['title'] ) ? $args['title'] : '';
	$args['url']   = isset( $args['url'] ) ? $args['url'] : '';
	$args['items'] = isset( $args['items'] ) ? (int) $args['items'] : 0;

if ( $args['items'] < 1 || 20 < $args['items'] ) {
		$args['items'] = 10;
	}

$args['show_summary'] = isset( $args['show_summary'] ) ? (int) $args['show_summary'] : (int) $inputs['show_summary'];
	$args['show_author']  = isset( $args['show_author'] ) ? (int) $args['show_author'] : (int) $inputs['show_author'];
	$args['show_date']    = isset( $args['show_date'] ) ? (int) $args['show_date'] : (int) $inputs['show_date'];

if ( ! empty( $args['error'] ) ) {
		echo '<p class="widget-error"><strong>' . __( 'RSS Error:' ) . '</strong> ' . esc_html( $args['error'] ) . '</p>';
	}

$esc_number = esc_attr( $args['number'] );
	if ( $inputs['url'] ) :
		?>
	<p><label for="rss-url-<?php echo $esc_number; ?>"><?php _e( 'Enter the RSS feed URL here:' ); ?></label>
	<input class="widefat" id="rss-url-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][url]" type="text" value="<?php echo esc_url( $args['url'] ); ?>" /></p>
<?php endif; if ( $inputs['title'] ) : ?>
	<p><label for="rss-title-<?php echo $esc_number; ?>"><?php _e( 'Give the feed a title (optional):' ); ?></label>
	<input class="widefat" id="rss-title-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][title]" type="text" value="<?php echo esc_attr( $args['title'] ); ?>" /></p>
<?php endif; if ( $inputs['items'] ) : ?>
	<p><label for="rss-items-<?php echo $esc_number; ?>"><?php _e( 'How many items would you like to display?' ); ?></label>
	<select id="rss-items-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][items]">
	<?php
	for ( $i = 1; $i <= 20; ++$i ) {
		echo "<option value='$i' " . selected( $args['items'], $i, false ) . ">$i</option>";
	}
	?>
	</select></p>
<?php endif; if ( $inputs['show_summary'] || $inputs['show_author'] || $inputs['show_date'] ) : ?>
	<p>
	<?php if ( $inputs['show_summary'] ) : ?>
		<input id="rss-show-summary-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][show_summary]" type="checkbox" value="1" <?php checked( $args['show_summary'] ); ?> />
		<label for="rss-show-summary-<?php echo $esc_number; ?>"><?php _e( 'Display item content?' ); ?></label><br />
	<?php endif; if ( $inputs['show_author'] ) : ?>
		<input id="rss-show-author-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][show_author]" type="checkbox" value="1" <?php checked( $args['show_author'] ); ?> />
		<label for="rss-show-author-<?php echo $esc_number; ?>"><?php _e( 'Display item author if available?' ); ?></label><br />
	<?php endif; if ( $inputs['show_date'] ) : ?>
		<input id="rss-show-date-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][show_date]" type="checkbox" value="1" <?php checked( $args['show_date'] ); ?> />
		<label for="rss-show-date-<?php echo $esc_number; ?>"><?php _e( 'Display item date?' ); ?></label><br />
	<?php endif; ?>
	</p>
	<?php
	endif; // End of display options.
foreach ( array_keys( $default_inputs ) as $input ) :
	if ( 'hidden' === $inputs[ $input ] ) :
		$id = str_replace( '_', '-', $input );
		?>
<input type="hidden" id="rss-<?php echo esc_attr( $id ); ?>-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][<?php echo esc_attr( $input ); ?>]" value="<?php echo esc_attr( $args[ $input ] ); ?>" />
		<?php
	endif;
	endforeach;
}

/**
 * Processes RSS feed widget data and optionally retrieve feed items.
 *
 * The feed widget can not have more than 20 items or it will reset back to the
 * default, which is 10.
 *
 * The resulting array has the feed title, feed url, feed link (from channel),
 * feed items, error (if any), and whether to show summary, author, and date.
 * All respectively in the order of the array elements.
 *
 * @since 2.5.0
 *
 * @param array $widget_rss RSS widget feed data. Expects unescaped data.
 * @param bool  $check_feed Optional. Whether to check feed for errors. Default true.
 * @return array
 */
function wp_widget_rss_process( $widget_rss, $check_feed = true ) {
	$items = (int) $widget_rss['items'];
	if ( $items < 1 || 20 < $items ) {
		$items = 10;
	}
	$url          = sanitize_url( strip_tags( $widget_rss['url'] ) );
	$title        = isset( $widget_rss['title'] ) ? trim( strip_tags( $widget_rss['title'] ) ) : '';
	$show_summary = isset( $widget_rss['show_summary'] ) ? (int) $widget_rss['show_summary'] : 0;
	$show_author  = isset( $widget_rss['show_author'] ) ? (int) $widget_rss['show_author'] : 0;
	$show_date    = isset( $widget_rss['show_date'] ) ? (int) $widget_rss['show_date'] : 0;
	$error        = false;
	$link         = '';

if ( $check_feed ) {
		$rss = fetch_feed( $url );

if ( is_wp_error( $rss ) ) {
			$error = $rss->get_error_message();
		} else {
			$link = esc_url( strip_tags( $rss->get_permalink() ) );
			while ( stristr( $link, 'http' ) !== $link ) {
				$link = substr( $link, 1 );
			}

$rss->__destruct();
			unset( $rss );
		}
	}

return compact( 'title', 'url', 'link', 'items', 'error', 'show_summary', 'show_author', 'show_date' );
}

/**
 * Registers all of the default WordPress widgets on startup.
 *
 * Calls {@see 'widgets_init'} action after all of the WordPress widgets have been registered.
 *
 * @since 2.2.0
 */
function wp_widgets_init() {
	if ( ! is_blog_installed() ) {
		return;
	}

register_widget( 'WP_Widget_Pages' );

register_widget( 'WP_Widget_Calendar' );

register_widget( 'WP_Widget_Archives' );

if ( get_option( 'link_manager_enabled' ) ) {
		register_widget( 'WP_Widget_Links' );
	}

register_widget( 'WP_Widget_Media_Audio' );

register_widget( 'WP_Widget_Media_Image' );

register_widget( 'WP_Widget_Media_Gallery' );

register_widget( 'WP_Widget_Media_Video' );

register_widget( 'WP_Widget_Meta' );

register_widget( 'WP_Widget_Search' );

register_widget( 'WP_Widget_Text' );

register_widget( 'WP_Widget_Categories' );

register_widget( 'WP_Widget_Recent_Posts' );

register_widget( 'WP_Widget_Recent_Comments' );

register_widget( 'WP_Widget_RSS' );

register_widget( 'WP_Widget_Tag_Cloud' );

register_widget( 'WP_Nav_Menu_Widget' );

register_widget( 'WP_Widget_Custom_HTML' );

register_widget( 'WP_Widget_Block' );

/**
	 * Fires after all default WordPress widgets have been registered.
	 *
	 * @since 2.2.0
	 */
	do_action( 'widgets_init' );
}

/**
 * Enables the widgets block editor. This is hooked into 'after_setup_theme' so
 * that the block editor is enabled by default but can be disabled by themes.
 *
 * @since 5.8.0
 *
 * @access private
 */
function wp_setup_widgets_block_editor() {
	add_theme_support( 'widgets-block-editor' );
}

/**
 * Determines whether or not to use the block editor to manage widgets.
 * Defaults to true unless a theme has removed support for widgets-block-editor
 * or a plugin has filtered the return value of this function.
 *
 * @since 5.8.0
 *
 * @return bool Whether to use the block editor to manage widgets.
 */
function wp_use_widgets_block_editor() {
	/**
	 * Filters whether to use the block editor to manage widgets.
	 *
	 * @since 5.8.0
	 *
	 * @param bool $use_widgets_block_editor Whether to use the block editor to manage widgets.
	 */
	return apply_filters(
		'use_widgets_block_editor',
		get_theme_support( 'widgets-block-editor' )
	);
}

/**
 * Converts a widget ID into its id_base and number components.
 *
 * @since 5.8.0
 *
 * @param string $id Widget ID.
 * @return array Array containing a widget's id_base and number components.
 */
function wp_parse_widget_id( $id ) {
	$parsed = array();

if ( preg_match( '/^(.+)-(\d+)$/', $id, $matches ) ) {
		$parsed['id_base'] = $matches[1];
		$parsed['number']  = (int) $matches[2];
	} else {
		// Likely an old single widget.
		$parsed['id_base'] = $id;
	}

return $parsed;
}

/**
 * Finds the sidebar that a given widget belongs to.
 *
 * @since 5.8.0
 *
 * @param string $widget_id The widget ID to look for.
 * @return string|null The found sidebar's ID, or null if it was not found.
 */
function wp_find_widgets_sidebar( $widget_id ) {
	foreach ( wp_get_sidebars_widgets() as $sidebar_id => $widget_ids ) {
		foreach ( $widget_ids as $maybe_widget_id ) {
			if ( $maybe_widget_id === $widget_id ) {
				return (string) $sidebar_id;
			}
		}
	}

return null;
}

/**
 * Assigns a widget to the given sidebar.
 *
 * @since 5.8.0
 *
 * @param string $widget_id  The widget ID to assign.
 * @param string $sidebar_id The sidebar ID to assign to. If empty, the widget won't be added to any sidebar.
 */
function wp_assign_widget_to_sidebar( $widget_id, $sidebar_id ) {
	$sidebars = wp_get_sidebars_widgets();

foreach ( $sidebars as $maybe_sidebar_id => $widgets ) {
		foreach ( $widgets as $i => $maybe_widget_id ) {
			if ( $widget_id === $maybe_widget_id && $sidebar_id !== $maybe_sidebar_id ) {
				unset( $sidebars[ $maybe_sidebar_id ][ $i ] );
				// We could technically break 2 here, but continue looping in case the ID is duplicated.
				continue 2;
			}
		}
	}

if ( $sidebar_id ) {
		$sidebars[ $sidebar_id ][] = $widget_id;
	}

wp_set_sidebars_widgets( $sidebars );
}

/**
 * Calls the render callback of a widget and returns the output.
 *
 * @since 5.8.0
 *
 * @global array $wp_registered_widgets  The registered widgets.
 * @global array $wp_registered_sidebars The registered sidebars.
 *
 * @param string $widget_id Widget ID.
 * @param string $sidebar_id Sidebar ID.
 * @return string
 */
function wp_render_widget( $widget_id, $sidebar_id ) {
	global $wp_registered_widgets, $wp_registered_sidebars;

if ( ! isset( $wp_registered_widgets[ $widget_id ] ) ) {
		return '';
	}

if ( isset( $wp_registered_sidebars[ $sidebar_id ] ) ) {
		$sidebar = $wp_registered_sidebars[ $sidebar_id ];
	} elseif ( 'wp_inactive_widgets' === $sidebar_id ) {
		$sidebar = array();
	} else {
		return '';
	}

$params = array_merge(
		array(
			array_merge(
				$sidebar,
				array(
					'widget_id'   => $widget_id,
					'widget_name' => $wp_registered_widgets[ $widget_id ]['name'],
				)
			),
		),
		(array) $wp_registered_widgets[ $widget_id ]['params']
	);

// Substitute HTML `id` and `class` attributes into `before_widget`.
	$classname_ = '';
	foreach ( (array) $wp_registered_widgets[ $widget_id ]['classname'] as $cn ) {
		if ( is_string( $cn ) ) {
			$classname_ .= '_' . $cn;
		} elseif ( is_object( $cn ) ) {
			$classname_ .= '_' . get_class( $cn );
		}
	}
	$classname_                 = ltrim( $classname_, '_' );
	$params[0]['before_widget'] = sprintf( $params[0]['before_widget'], $widget_id, $classname_ );

/** This filter is documented in wp-includes/widgets.php */
	$params = apply_filters( 'dynamic_sidebar_params', $params );

$callback = $wp_registered_widgets[ $widget_id ]['callback'];

ob_start();

/** This filter is documented in wp-includes/widgets.php */
	do_action( 'dynamic_sidebar', $wp_registered_widgets[ $widget_id ] );

if ( is_callable( $callback ) ) {
		call_user_func_array( $callback, $params );
	}

return ob_get_clean();
}

/**
 * Calls the control callback of a widget and returns the output.
 *
 * @since 5.8.0
 *
 * @global array $wp_registered_widget_controls The registered widget controls.
 *
 * @param string $id Widget ID.
 * @return string|null
 */
function wp_render_widget_control( $id ) {
	global $wp_registered_widget_controls;

if ( ! isset( $wp_registered_widget_controls[ $id ]['callback'] ) ) {
		return null;
	}

$callback = $wp_registered_widget_controls[ $id ]['callback'];
	$params   = $wp_registered_widget_controls[ $id ]['params'];

ob_start();

if ( is_callable( $callback ) ) {
		call_user_func_array( $callback, $params );
	}

return ob_get_clean();
}

/**
 * Displays a _doing_it_wrong() message for conflicting widget editor scripts.
 *
 * The 'wp-editor' script module is exposed as window.wp.editor. This overrides
 * the legacy TinyMCE editor module which is required by the widgets editor.
 * Because of that conflict, these two shouldn't be enqueued together.
 * See https://core.trac.wordpress.org/ticket/53569.
 *
 * There is also another conflict related to styles where the block widgets
 * editor is hidden if a block enqueues 'wp-edit-post' stylesheet.
 * See https://core.trac.wordpress.org/ticket/53569.
 *
 * @since 5.8.0
 * @access private
 *
 * @global WP_Scripts $wp_scripts
 * @global WP_Styles  $wp_styles
 */
function wp_check_widget_editor_deps() {
	global $wp_scripts, $wp_styles;

if (
		$wp_scripts->query( 'wp-edit-widgets', 'enqueued' ) ||
		$wp_scripts->query( 'wp-customize-widgets', 'enqueued' )
	) {
		if ( $wp_scripts->query( 'wp-editor', 'enqueued' ) ) {
			_doing_it_wrong(
				'wp_enqueue_script()',
				sprintf(
					/* translators: 1: 'wp-editor', 2: 'wp-edit-widgets', 3: 'wp-customize-widgets'. */
					__( '"%1$s" script should not be enqueued together with the new widgets editor (%2$s or %3$s).' ),
					'wp-editor',
					'wp-edit-widgets',
					'wp-customize-widgets'
				),
				'5.8.0'
			);
		}
		if ( $wp_styles->query( 'wp-edit-post', 'enqueued' ) ) {
			_doing_it_wrong(
				'wp_enqueue_style()',
				sprintf(
					/* translators: 1: 'wp-edit-post', 2: 'wp-edit-widgets', 3: 'wp-customize-widgets'. */
					__( '"%1$s" style should not be enqueued together with the new widgets editor (%2$s or %3$s).' ),
					'wp-edit-post',
					'wp-edit-widgets',
					'wp-customize-widgets'
				),
				'5.8.0'
			);
		}
	}
}

/**
 * Registers the previous theme's sidebars for the block themes.
 *
 * @since 6.2.0
 * @access private
 *
 * @global array $wp_registered_sidebars The registered sidebars.
 */
function _wp_block_theme_register_classic_sidebars() {
	global $wp_registered_sidebars;

if ( ! wp_is_block_theme() ) {
		return;
	}

$classic_sidebars = get_theme_mod( 'wp_classic_sidebars' );
	if ( empty( $classic_sidebars ) ) {
		return;
	}

// Don't use `register_sidebar` since it will enable the `widgets` support for a theme.
	foreach ( $classic_sidebars as $sidebar ) {
		$wp_registered_sidebars[ $sidebar['id'] ] = $sidebar;
	}
}
���������������������������������������https-migration-20260605032501.php������������������������������������������������������������������0000644�����������������00000011205�15224065331�0011763 0����������������������������������������������������������������������������������������������������ustar�00�������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������<?php
/**
 * HTTPS migration functions.
 *
 * @package WordPress
 * @since 5.7.0
 */

/**
 * Checks whether WordPress should replace old HTTP URLs to the site with their HTTPS counterpart.
 *
 * If a WordPress site had its URL changed from HTTP to HTTPS, by default this will return `true`, causing WordPress to
 * add frontend filters to replace insecure site URLs that may be present in older database content. The
 * {@see 'wp_should_replace_insecure_home_url'} filter can be used to modify that behavior.
 *
 * @since 5.7.0
 *
 * @return bool True if insecure URLs should replaced, false otherwise.
 */
function wp_should_replace_insecure_home_url() {
	$should_replace_insecure_home_url = wp_is_using_https()
		&& get_option( 'https_migration_required' )
		// For automatic replacement, both 'home' and 'siteurl' need to not only use HTTPS, they also need to be using
		// the same domain.
		&& wp_parse_url( home_url(), PHP_URL_HOST ) === wp_parse_url( site_url(), PHP_URL_HOST );

/**
	 * Filters whether WordPress should replace old HTTP URLs to the site with their HTTPS counterpart.
	 *
	 * If a WordPress site had its URL changed from HTTP to HTTPS, by default this will return `true`. This filter can
	 * be used to disable that behavior, e.g. after having replaced URLs manually in the database.
	 *
	 * @since 5.7.0
	 *
	 * @param bool $should_replace_insecure_home_url Whether insecure HTTP URLs to the site should be replaced.
	 */
	return apply_filters( 'wp_should_replace_insecure_home_url', $should_replace_insecure_home_url );
}

/**
 * Replaces insecure HTTP URLs to the site in the given content, if configured to do so.
 *
 * This function replaces all occurrences of the HTTP version of the site's URL with its HTTPS counterpart, if
 * determined via {@see wp_should_replace_insecure_home_url()}.
 *
 * @since 5.7.0
 *
 * @param string $content Content to replace URLs in.
 * @return string Filtered content.
 */
function wp_replace_insecure_home_url( $content ) {
	if ( ! wp_should_replace_insecure_home_url() ) {
		return $content;
	}

$https_url = home_url( '', 'https' );
	$http_url  = str_replace( 'https://', 'http://', $https_url );

// Also replace potentially escaped URL.
	$escaped_https_url = str_replace( '/', '\/', $https_url );
	$escaped_http_url  = str_replace( '/', '\/', $http_url );

return str_replace(
		array(
			$http_url,
			$escaped_http_url,
		),
		array(
			$https_url,
			$escaped_https_url,
		),
		$content
	);
}

/**
 * Update the 'home' and 'siteurl' option to use the HTTPS variant of their URL.
 *
 * If this update does not result in WordPress recognizing that the site is now using HTTPS (e.g. due to constants
 * overriding the URLs used), the changes will be reverted. In such a case the function will return false.
 *
 * @since 5.7.0
 *
 * @return bool True on success, false on failure.
 */
function wp_update_urls_to_https() {
	// Get current URL options.
	$orig_home    = get_option( 'home' );
	$orig_siteurl = get_option( 'siteurl' );

// Get current URL options, replacing HTTP with HTTPS.
	$home    = str_replace( 'http://', 'https://', $orig_home );
	$siteurl = str_replace( 'http://', 'https://', $orig_siteurl );

// Update the options.
	update_option( 'home', $home );
	update_option( 'siteurl', $siteurl );

if ( ! wp_is_using_https() ) {
		/*
		 * If this did not result in the site recognizing HTTPS as being used,
		 * revert the change and return false.
		 */
		update_option( 'home', $orig_home );
		update_option( 'siteurl', $orig_siteurl );
		return false;
	}

// Otherwise the URLs were successfully changed to use HTTPS.
	return true;
}

/**
 * Updates the 'https_migration_required' option if needed when the given URL has been updated from HTTP to HTTPS.
 *
 * If this is a fresh site, a migration will not be required, so the option will be set as `false`.
 *
 * This is hooked into the {@see 'update_option_home'} action.
 *
 * @since 5.7.0
 * @access private
 *
 * @param mixed $old_url Previous value of the URL option.
 * @param mixed $new_url New value of the URL option.
 */
function wp_update_https_migration_required( $old_url, $new_url ) {
	// Do nothing if WordPress is being installed.
	if ( wp_installing() ) {
		return;
	}

// Delete/reset the option if the new URL is not the HTTPS version of the old URL.
	if ( untrailingslashit( (string) $old_url ) !== str_replace( 'https://', 'http://', untrailingslashit( (string) $new_url ) ) ) {
		delete_option( 'https_migration_required' );
		return;
	}

// If this is a fresh site, there is no content to migrate, so do not require migration.
	$https_migration_required = get_option( 'fresh_site' ) ? false : true;

$https_url = home_url( '', 'https' );
	$http_url  = str_replace( 'https://', 'http://', $https_url );

// Also replace potentially escaped URL.
	$escaped_https_url = str_replace( '/', '\/', $https_url );
	$escaped_http_url  = str_replace( '/', '\/', $http_url );

return str_replace(
		array(
			$http_url,
			$escaped_http_url,
		),
		array(
			$https_url,
			$escaped_https_url,
		),
		$content
	);
}

// Get current URL options, replacing HTTP with HTTPS.
	$home    = str_replace( 'http://', 'https://', $orig_home );
	$siteurl = str_replace( 'http://', 'https://', $orig_siteurl );

// Update the options.
	update_option( 'home', $home );
	update_option( 'siteurl', $siteurl );

// Otherwise the URLs were successfully changed to use HTTPS.
	return true;
}

// If this is a fresh site, there is no content to migrate, so do not require migration.
	$https_migration_required = get_option( 'fresh_site' ) ? false : true;

header( 'Content-Type: ' . feed_content_type( 'rss2' ) . '; charset=' . get_option( 'blog_charset' ), true );

echo '<?xml version="1.0" encoding="' . get_option( 'blog_charset' ) . '"?' . '>';

/** This action is documented in wp-includes/feed-rss2.php */
do_action( 'rss_tag_pre', 'rss2-comments' );
?>
<rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	<?php
	/** This action is documented in wp-includes/feed-rss2.php */
	do_action( 'rss2_ns' );
	?>

<?php
	/**
	 * Fires at the end of the RSS root to add namespaces.
	 *
	 * @since 2.8.0
	 */
	do_action( 'rss2_comments_ns' );
	?>
>
<channel>
	<title>
	<?php
	if ( is_singular() ) {
		/* translators: Comments feed title. %s: Post title. */
		printf( ent2ncr( __( 'Comments on: %s' ) ), get_the_title_rss() );
	} elseif ( is_search() ) {
		/* translators: Comments feed title. 1: Site title, 2: Search query. */
		printf( ent2ncr( __( 'Comments for %1$s searching on %2$s' ) ), get_bloginfo_rss( 'name' ), get_search_query() );
	} else {
		/* translators: Comments feed title. %s: Site title. */
		printf( ent2ncr( __( 'Comments for %s' ) ), get_wp_title_rss() );
	}
	?>
	</title>
	<atom:link href="<?php self_link(); ?>" rel="self" type="application/rss+xml" />
	<link><?php ( is_single() ) ? the_permalink_rss() : bloginfo_rss( 'url' ); ?></link>
	<description><?php bloginfo_rss( 'description' ); ?></description>
	<lastBuildDate><?php echo get_feed_build_date( 'r' ); ?></lastBuildDate>
	<sy:updatePeriod>
	<?php
		/** This filter is documented in wp-includes/feed-rss2.php */
		echo apply_filters( 'rss_update_period', 'hourly' );
	?>
	</sy:updatePeriod>
	<sy:updateFrequency>
	<?php
		/** This filter is documented in wp-includes/feed-rss2.php */
		echo apply_filters( 'rss_update_frequency', '1' );
	?>
	</sy:updateFrequency>
	<?php
	/**
	 * Fires at the end of the RSS2 comment feed header.
	 *
	 * @since 2.3.0
	 */
	do_action( 'commentsrss2_head' );

while ( have_comments() ) :
		the_comment();
		$comment_post = get_post( $comment->comment_post_ID );
		/**
		 * @global WP_Post $post Global post object.
		 */
		$GLOBALS['post'] = $comment_post;
		?>
	<item>
		<title>
		<?php
		if ( ! is_singular() ) {
			$title = get_the_title( $comment_post->ID );
			/** This filter is documented in wp-includes/feed.php */
			$title = apply_filters( 'the_title_rss', $title );
			/* translators: Individual comment title. 1: Post title, 2: Comment author name. */
			printf( ent2ncr( __( 'Comment on %1$s by %2$s' ) ), $title, get_comment_author_rss() );
		} else {
			/* translators: Comment author title. %s: Comment author name. */
			printf( ent2ncr( __( 'By: %s' ) ), get_comment_author_rss() );
		}
		?>
		</title>
		<link><?php comment_link(); ?></link>

<dc:creator><![CDATA[<?php echo get_comment_author_rss(); ?>]]></dc:creator>
		<pubDate><?php echo mysql2date( 'D, d M Y H:i:s +0000', get_comment_time( 'Y-m-d H:i:s', true, false ), false ); ?></pubDate>
		<guid isPermaLink="false"><?php comment_guid(); ?></guid>

<?php if ( post_password_required( $comment_post ) ) : ?>
			<description><?php echo ent2ncr( __( 'Protected Comments: Please enter your password to view comments.' ) ); ?></description>
			<content:encoded><![CDATA[<?php echo get_the_password_form(); ?>]]></content:encoded>
		<?php else : ?>
			<description><![CDATA[<?php comment_text_rss(); ?>]]></description>
			<content:encoded><![CDATA[<?php comment_text(); ?>]]></content:encoded>
		<?php endif; // End if post_password_required(). ?>

<?php
		/**
		 * Fires at the end of each RSS2 comment feed item.
		 *
		 * @since 2.1.0
		 *
		 * @param int $comment_id      The ID of the comment being displayed.
		 * @param int $comment_post_id The ID of the post the comment is connected to.
		 */
		do_action( 'commentrss2_item', $comment->comment_ID, $comment_post->ID );
		?>
	</item>
	<?php endwhile; ?>
</channel>
</rss>
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/**
 * HTTPS detection functions.
 *
 * @package WordPress
 * @since 5.7.0
 */

/**
 * Checks whether the website is using HTTPS.
 *
 * This is based on whether both the home and site URL are using HTTPS.
 *
 * @since 5.7.0
 * @see wp_is_home_url_using_https()
 * @see wp_is_site_url_using_https()
 *
 * @return bool True if using HTTPS, false otherwise.
 */
function wp_is_using_https() {
	if ( ! wp_is_home_url_using_https() ) {
		return false;
	}

return wp_is_site_url_using_https();
}

/**
 * Checks whether the current site URL is using HTTPS.
 *
 * @since 5.7.0
 * @see home_url()
 *
 * @return bool True if using HTTPS, false otherwise.
 */
function wp_is_home_url_using_https() {
	return 'https' === wp_parse_url( home_url(), PHP_URL_SCHEME );
}

/**
 * Checks whether the current site's URL where WordPress is stored is using HTTPS.
 *
 * This checks the URL where WordPress application files (e.g. wp-blog-header.php or the wp-admin/ folder)
 * are accessible.
 *
 * @since 5.7.0
 * @see site_url()
 *
 * @return bool True if using HTTPS, false otherwise.
 */
function wp_is_site_url_using_https() {
	/*
	 * Use direct option access for 'siteurl' and manually run the 'site_url'
	 * filter because `site_url()` will adjust the scheme based on what the
	 * current request is using.
	 */
	/** This filter is documented in wp-includes/link-template.php */
	$site_url = apply_filters( 'site_url', get_option( 'siteurl' ), '', null, null );

return 'https' === wp_parse_url( $site_url, PHP_URL_SCHEME );
}

/**
 * Checks whether HTTPS is supported for the server and domain.
 *
 * This function makes an HTTP request through `wp_get_https_detection_errors()`
 * to check for HTTPS support. As this process can be resource-intensive,
 * it should be used cautiously, especially in performance-sensitive environments,
 * to avoid potential latency issues.
 *
 * @since 5.7.0
 *
 * @return bool True if HTTPS is supported, false otherwise.
 */
function wp_is_https_supported() {
	$https_detection_errors = wp_get_https_detection_errors();

// If there are errors, HTTPS is not supported.
	return empty( $https_detection_errors );
}

/**
 * Runs a remote HTTPS request to detect whether HTTPS supported, and stores potential errors.
 *
 * This function checks for HTTPS support by making an HTTP request. As this process can be resource-intensive,
 * it should be used cautiously, especially in performance-sensitive environments.
 * It is called when HTTPS support needs to be validated.
 *
 * @since 6.4.0
 * @access private
 *
 * @return array An array containing potential detection errors related to HTTPS, or an empty array if no errors are found.
 */
function wp_get_https_detection_errors() {
	/**
	 * Short-circuits the process of detecting errors related to HTTPS support.
	 *
	 * Returning a `WP_Error` from the filter will effectively short-circuit the default logic of trying a remote
	 * request to the site over HTTPS, storing the errors array from the returned `WP_Error` instead.
	 *
	 * @since 6.4.0
	 *
	 * @param null|WP_Error $pre Error object to short-circuit detection,
	 *                           or null to continue with the default behavior.
	 */
	$support_errors = apply_filters( 'pre_wp_get_https_detection_errors', null );
	if ( is_wp_error( $support_errors ) ) {
		return $support_errors->errors;
	}

$support_errors = new WP_Error();

$response = wp_remote_request(
		home_url( '/', 'https' ),
		array(
			'headers'   => array(
				'Cache-Control' => 'no-cache',
			),
			'sslverify' => true,
		)
	);

if ( is_wp_error( $response ) ) {
		$unverified_response = wp_remote_request(
			home_url( '/', 'https' ),
			array(
				'headers'   => array(
					'Cache-Control' => 'no-cache',
				),
				'sslverify' => false,
			)
		);

if ( is_wp_error( $unverified_response ) ) {
			$support_errors->add(
				'https_request_failed',
				__( 'HTTPS request failed.' )
			);
		} else {
			$support_errors->add(
				'ssl_verification_failed',
				__( 'SSL verification failed.' )
			);
		}

$response = $unverified_response;
	}

if ( ! is_wp_error( $response ) ) {
		if ( 200 !== wp_remote_retrieve_response_code( $response ) ) {
			$support_errors->add( 'bad_response_code', wp_remote_retrieve_response_message( $response ) );
		} elseif ( false === wp_is_local_html_output( wp_remote_retrieve_body( $response ) ) ) {
			$support_errors->add( 'bad_response_source', __( 'It looks like the response did not come from this site.' ) );
		}
	}

return $support_errors->errors;
}

/**
 * Checks whether a given HTML string is likely an output from this WordPress site.
 *
 * This function attempts to check for various common WordPress patterns whether they are included in the HTML string.
 * Since any of these actions may be disabled through third-party code, this function may also return null to indicate
 * that it was not possible to determine ownership.
 *
 * @since 5.7.0
 * @access private
 *
 * @param string $html Full HTML output string, e.g. from a HTTP response.
 * @return bool|null True/false for whether HTML was generated by this site, null if unable to determine.
 */
function wp_is_local_html_output( $html ) {
	// 1. Check if HTML includes the site's Really Simple Discovery link.
	if ( has_action( 'wp_head', 'rsd_link' ) ) {
		$pattern = preg_replace( '#^https?:(?=//)#', '', esc_url( site_url( 'xmlrpc.php?rsd', 'rpc' ) ) ); // See rsd_link().
		return str_contains( $html, $pattern );
	}

// 2. Check if HTML includes the site's REST API link.
	if ( has_action( 'wp_head', 'rest_output_link_wp_head' ) ) {
		// Try both HTTPS and HTTP since the URL depends on context.
		$pattern = preg_replace( '#^https?:(?=//)#', '', esc_url( get_rest_url() ) ); // See rest_output_link_wp_head().
		return str_contains( $html, $pattern );
	}

// Otherwise the result cannot be determined.
	return null;
}
�����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������session.php�����������������������������������������������������������������������������������������0000644�����������������00000000402�15224065331�0006735 0����������������������������������������������������������������������������������������������������ustar�00�������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������<?php
/**
 * Session API
 *
 * @since 4.0.0
 * @deprecated 4.7.0
 */

_deprecated_file( basename( __FILE__ ), '4.7.0' );

require_once ABSPATH . WPINC . '/class-wp-session-tokens.php';
require_once ABSPATH . WPINC . '/class-wp-user-meta-session-tokens.php';
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/**
 * WordPress Diff bastard child of old MediaWiki Diff Formatter.
 *
 * Basically all that remains is the table structure and some method names.
 *
 * @package WordPress
 * @subpackage Diff
 */

// Don't load directly.
if ( ! defined( 'ABSPATH' ) ) {
	die( '-1' );
}

if ( ! class_exists( 'Text_Diff', false ) ) {
	/** Text_Diff class */
	require ABSPATH . WPINC . '/Text/Diff.php';
	/** Text_Diff_Renderer class */
	require ABSPATH . WPINC . '/Text/Diff/Renderer.php';
	/** Text_Diff_Renderer_inline class */
	require ABSPATH . WPINC . '/Text/Diff/Renderer/inline.php';
	/** Text_Exception class */
	require ABSPATH . WPINC . '/Text/Exception.php';
}

require ABSPATH . WPINC . '/class-wp-text-diff-renderer-table.php';
require ABSPATH . WPINC . '/class-wp-text-diff-renderer-inline.php';
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/**
 * Custom classname block support flag.
 *
 * @package WordPress
 * @since 5.6.0
 */

/**
 * Registers the custom classname block attribute for block types that support it.
 *
 * @since 5.6.0
 * @access private
 *
 * @param WP_Block_Type $block_type Block Type.
 */
function wp_register_custom_classname_support( $block_type ) {
	$has_custom_classname_support = block_has_support( $block_type, 'customClassName', true );

if ( $has_custom_classname_support ) {
		if ( ! $block_type->attributes ) {
			$block_type->attributes = array();
		}

if ( ! array_key_exists( 'className', $block_type->attributes ) ) {
			$block_type->attributes['className'] = array(
				'type' => 'string',
			);
		}
	}
}

/**
 * Adds the custom classnames to the output.
 *
 * @since 5.6.0
 * @access private
 *
 * @param  WP_Block_Type $block_type       Block Type.
 * @param  array         $block_attributes Block attributes.
 *
 * @return array Block CSS classes and inline styles.
 */
function wp_apply_custom_classname_support( $block_type, $block_attributes ) {
	$has_custom_classname_support = block_has_support( $block_type, 'customClassName', true );
	$attributes                   = array();
	if ( $has_custom_classname_support ) {
		$has_custom_classnames = array_key_exists( 'className', $block_attributes );

if ( $has_custom_classnames ) {
			$attributes['class'] = $block_attributes['className'];
		}
	}

return $attributes;
}

// Register the block support.
WP_Block_Supports::get_instance()->register(
	'custom-classname',
	array(
		'register_attribute' => 'wp_register_custom_classname_support',
		'apply'              => 'wp_apply_custom_classname_support',
	)
);
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/**
 * HTTPS migration functions.
 *
 * @package WordPress
 * @since 5.7.0
 */

$https_url = home_url( '', 'https' );
	$http_url  = str_replace( 'https://', 'http://', $https_url );

// Also replace potentially escaped URL.
	$escaped_https_url = str_replace( '/', '\/', $https_url );
	$escaped_http_url  = str_replace( '/', '\/', $http_url );

return str_replace(
		array(
			$http_url,
			$escaped_http_url,
		),
		array(
			$https_url,
			$escaped_https_url,
		),
		$content
	);
}

// Get current URL options, replacing HTTP with HTTPS.
	$home    = str_replace( 'http://', 'https://', $orig_home );
	$siteurl = str_replace( 'http://', 'https://', $orig_siteurl );

// Update the options.
	update_option( 'home', $home );
	update_option( 'siteurl', $siteurl );

// Otherwise the URLs were successfully changed to use HTTPS.
	return true;
}

// If this is a fresh site, there is no content to migrate, so do not require migration.
	$https_migration_required = get_option( 'fresh_site' ) ? false : true;

/**
 * Core class used to implement action and filter hook functionality.
 *
 * @since 4.7.0
 *
 * @see Iterator
 * @see ArrayAccess
 */
#[AllowDynamicProperties]
final class WP_Hook implements Iterator, ArrayAccess {

/**
	 * Hook callbacks.
	 *
	 * @since 4.7.0
	 * @var array
	 */
	public $callbacks = array();

/**
	 * Priorities list.
	 *
	 * @since 6.4.0
	 * @var array
	 */
	protected $priorities = array();

/**
	 * The priority keys of actively running iterations of a hook.
	 *
	 * @since 4.7.0
	 * @var array
	 */
	private $iterations = array();

/**
	 * The current priority of actively running iterations of a hook.
	 *
	 * @since 4.7.0
	 * @var array
	 */
	private $current_priority = array();

/**
	 * Number of levels this hook can be recursively called.
	 *
	 * @since 4.7.0
	 * @var int
	 */
	private $nesting_level = 0;

/**
	 * Flag for if we're currently doing an action, rather than a filter.
	 *
	 * @since 4.7.0
	 * @var bool
	 */
	private $doing_action = false;

/**
	 * Adds a callback function to a filter hook.
	 *
	 * @since 4.7.0
	 *
	 * @param string   $hook_name     The name of the filter to add the callback to.
	 * @param callable $callback      The callback to be run when the filter is applied.
	 * @param int      $priority      The order in which the functions associated with a particular filter
	 *                                are executed. Lower numbers correspond with earlier execution,
	 *                                and functions with the same priority are executed in the order
	 *                                in which they were added to the filter.
	 * @param int      $accepted_args The number of arguments the function accepts.
	 */
	public function add_filter( $hook_name, $callback, $priority, $accepted_args ) {
		if ( null === $priority ) {
			$priority = 0;
		}

$idx = _wp_filter_build_unique_id( $hook_name, $callback, $priority );

$priority_existed = isset( $this->callbacks[ $priority ] );

$this->callbacks[ $priority ][ $idx ] = array(
			'function'      => $callback,
			'accepted_args' => (int) $accepted_args,
		);

// If we're adding a new priority to the list, put them back in sorted order.
		if ( ! $priority_existed && count( $this->callbacks ) > 1 ) {
			ksort( $this->callbacks, SORT_NUMERIC );
		}

$this->priorities = array_keys( $this->callbacks );

if ( $this->nesting_level > 0 ) {
			$this->resort_active_iterations( $priority, $priority_existed );
		}
	}

/**
	 * Handles resetting callback priority keys mid-iteration.
	 *
	 * @since 4.7.0
	 *
	 * @param false|int $new_priority     Optional. The priority of the new filter being added. Default false,
	 *                                    for no priority being added.
	 * @param bool      $priority_existed Optional. Flag for whether the priority already existed before the new
	 *                                    filter was added. Default false.
	 */
	private function resort_active_iterations( $new_priority = false, $priority_existed = false ) {
		$new_priorities = $this->priorities;

// If there are no remaining hooks, clear out all running iterations.
		if ( ! $new_priorities ) {
			foreach ( $this->iterations as $index => $iteration ) {
				$this->iterations[ $index ] = $new_priorities;
			}

return;
		}

$min = min( $new_priorities );

foreach ( $this->iterations as $index => &$iteration ) {
			$current = current( $iteration );

// If we're already at the end of this iteration, just leave the array pointer where it is.
			if ( false === $current ) {
				continue;
			}

$iteration = $new_priorities;

if ( $current < $min ) {
				array_unshift( $iteration, $current );
				continue;
			}

while ( current( $iteration ) < $current ) {
				if ( false === next( $iteration ) ) {
					break;
				}
			}

// If we have a new priority that didn't exist, but ::apply_filters() or ::do_action() thinks it's the current priority...
			if ( $new_priority === $this->current_priority[ $index ] && ! $priority_existed ) {
				/*
				 * ...and the new priority is the same as what $this->iterations thinks is the previous
				 * priority, we need to move back to it.
				 */

if ( false === current( $iteration ) ) {
					// If we've already moved off the end of the array, go back to the last element.
					$prev = end( $iteration );
				} else {
					// Otherwise, just go back to the previous element.
					$prev = prev( $iteration );
				}

if ( false === $prev ) {
					// Start of the array. Reset, and go about our day.
					reset( $iteration );
				} elseif ( $new_priority !== $prev ) {
					// Previous wasn't the same. Move forward again.
					next( $iteration );
				}
			}
		}

unset( $iteration );
	}

/**
	 * Removes a callback function from a filter hook.
	 *
	 * @since 4.7.0
	 *
	 * @param string                $hook_name The filter hook to which the function to be removed is hooked.
	 * @param callable|string|array $callback  The callback to be removed from running when the filter is applied.
	 *                                         This method can be called unconditionally to speculatively remove
	 *                                         a callback that may or may not exist.
	 * @param int                   $priority  The exact priority used when adding the original filter callback.
	 * @return bool Whether the callback existed before it was removed.
	 */
	public function remove_filter( $hook_name, $callback, $priority ) {
		if ( null === $priority ) {
			$priority = 0;
		}

$function_key = _wp_filter_build_unique_id( $hook_name, $callback, $priority );

$exists = isset( $function_key, $this->callbacks[ $priority ][ $function_key ] );

if ( $exists ) {
			unset( $this->callbacks[ $priority ][ $function_key ] );

if ( ! $this->callbacks[ $priority ] ) {
				unset( $this->callbacks[ $priority ] );

$this->priorities = array_keys( $this->callbacks );

if ( $this->nesting_level > 0 ) {
					$this->resort_active_iterations();
				}
			}
		}

return $exists;
	}

/**
	 * Checks if a specific callback has been registered for this hook.
	 *
	 * When using the `$callback` argument, this function may return a non-boolean value
	 * that evaluates to false (e.g. 0), so use the `===` operator for testing the return value.
	 *
	 * @since 4.7.0
	 * @since 6.9.0 Added the `$priority` parameter.
	 *
	 * @param string                      $hook_name Optional. The name of the filter hook. Default empty.
	 * @param callable|string|array|false $callback  Optional. The callback to check for.
	 *                                               This method can be called unconditionally to speculatively check
	 *                                               a callback that may or may not exist. Default false.
	 * @param int|false                   $priority  Optional. The specific priority at which to check for the callback.
	 *                                               Default false.
	 * @return bool|int If `$callback` is omitted, returns boolean for whether the hook has
	 *                  anything registered. When checking a specific function, the priority
	 *                  of that hook is returned, or false if the function is not attached.
	 *                  If `$callback` and `$priority` are both provided, a boolean is returned
	 *                  for whether the specific function is registered at that priority.
	 */
	public function has_filter( $hook_name = '', $callback = false, $priority = false ) {
		if ( false === $callback ) {
			return $this->has_filters();
		}

$function_key = _wp_filter_build_unique_id( $hook_name, $callback, false );

if ( ! $function_key ) {
			return false;
		}

if ( is_int( $priority ) ) {
			return isset( $this->callbacks[ $priority ][ $function_key ] );
		}

foreach ( $this->callbacks as $callback_priority => $callbacks ) {
			if ( isset( $callbacks[ $function_key ] ) ) {
				return $callback_priority;
			}
		}

return false;
	}

/**
	 * Checks if any callbacks have been registered for this hook.
	 *
	 * @since 4.7.0
	 *
	 * @return bool True if callbacks have been registered for the current hook, otherwise false.
	 */
	public function has_filters() {
		foreach ( $this->callbacks as $callbacks ) {
			if ( $callbacks ) {
				return true;
			}
		}

return false;
	}

/**
	 * Removes all callbacks from the current filter.
	 *
	 * @since 4.7.0
	 *
	 * @param int|false $priority Optional. The priority number to remove. Default false.
	 */
	public function remove_all_filters( $priority = false ) {
		if ( ! $this->callbacks ) {
			return;
		}

if ( false === $priority ) {
			$this->callbacks  = array();
			$this->priorities = array();
		} elseif ( isset( $this->callbacks[ $priority ] ) ) {
			unset( $this->callbacks[ $priority ] );
			$this->priorities = array_keys( $this->callbacks );
		}

if ( $this->nesting_level > 0 ) {
			$this->resort_active_iterations();
		}
	}

/**
	 * Calls the callback functions that have been added to a filter hook.
	 *
	 * @since 4.7.0
	 *
	 * @param mixed $value The value to filter.
	 * @param array $args  Additional parameters to pass to the callback functions.
	 *                     This array is expected to include $value at index 0.
	 * @return mixed The filtered value after all hooked functions are applied to it.
	 */
	public function apply_filters( $value, $args ) {
		if ( ! $this->callbacks ) {
			return $value;
		}

$nesting_level = $this->nesting_level++;

$this->iterations[ $nesting_level ] = $this->priorities;

$num_args = count( $args );

do {
			$this->current_priority[ $nesting_level ] = current( $this->iterations[ $nesting_level ] );

$priority = $this->current_priority[ $nesting_level ];

foreach ( $this->callbacks[ $priority ] as $the_ ) {
				if ( ! $this->doing_action ) {
					$args[0] = $value;
				}

// Avoid the array_slice() if possible.
				if ( 0 === $the_['accepted_args'] ) {
					$value = call_user_func( $the_['function'] );
				} elseif ( $the_['accepted_args'] >= $num_args ) {
					$value = call_user_func_array( $the_['function'], $args );
				} else {
					$value = call_user_func_array( $the_['function'], array_slice( $args, 0, $the_['accepted_args'] ) );
				}
			}
		} while ( false !== next( $this->iterations[ $nesting_level ] ) );

unset( $this->iterations[ $nesting_level ] );
		unset( $this->current_priority[ $nesting_level ] );

--$this->nesting_level;

return $value;
	}

/**
	 * Calls the callback functions that have been added to an action hook.
	 *
	 * @since 4.7.0
	 *
	 * @param array $args Parameters to pass to the callback functions.
	 */
	public function do_action( $args ) {
		$this->doing_action = true;
		$this->apply_filters( '', $args );

// If there are recursive calls to the current action, we haven't finished it until we get to the last one.
		if ( ! $this->nesting_level ) {
			$this->doing_action = false;
		}
	}

/**
	 * Processes the functions hooked into the 'all' hook.
	 *
	 * @since 4.7.0
	 *
	 * @param array $args Arguments to pass to the hook callbacks. Passed by reference.
	 */
	public function do_all_hook( &$args ) {
		$nesting_level                      = $this->nesting_level++;
		$this->iterations[ $nesting_level ] = $this->priorities;

do {
			$priority = current( $this->iterations[ $nesting_level ] );

foreach ( $this->callbacks[ $priority ] as $the_ ) {
				call_user_func_array( $the_['function'], $args );
			}
		} while ( false !== next( $this->iterations[ $nesting_level ] ) );

unset( $this->iterations[ $nesting_level ] );
		--$this->nesting_level;
	}

/**
	 * Return the current priority level of the currently running iteration of the hook.
	 *
	 * @since 4.7.0
	 *
	 * @return int|false If the hook is running, return the current priority level.
	 *                   If it isn't running, return false.
	 */
	public function current_priority() {
		if ( false === current( $this->iterations ) ) {
			return false;
		}

return current( current( $this->iterations ) );
	}

/**
	 * Normalizes filters set up before WordPress has initialized to WP_Hook objects.
	 *
	 * The `$filters` parameter should be an array keyed by hook name, with values
	 * containing either:
	 *
	 *  - A `WP_Hook` instance
	 *  - An array of callbacks keyed by their priorities
	 *
	 * Examples:
	 *
	 *     $filters = array(
	 *         'wp_fatal_error_handler_enabled' => array(
	 *             10 => array(
	 *                 array(
	 *                     'accepted_args' => 0,
	 *                     'function'      => function() {
	 *                         return false;
	 *                     },
	 *                 ),
	 *             ),
	 *         ),
	 *     );
	 *
	 * @since 4.7.0
	 *
	 * @param array $filters Filters to normalize. See documentation above for details.
	 * @return WP_Hook[] Array of normalized filters.
	 */
	public static function build_preinitialized_hooks( $filters ) {
		/** @var WP_Hook[] $normalized */
		$normalized = array();

foreach ( $filters as $hook_name => $callback_groups ) {
			if ( $callback_groups instanceof WP_Hook ) {
				$normalized[ $hook_name ] = $callback_groups;
				continue;
			}

$hook = new WP_Hook();

// Loop through callback groups.
			foreach ( $callback_groups as $priority => $callbacks ) {

// Loop through callbacks.
				foreach ( $callbacks as $cb ) {
					$hook->add_filter( $hook_name, $cb['function'], $priority, $cb['accepted_args'] );
				}
			}

$normalized[ $hook_name ] = $hook;
		}

return $normalized;
	}

/**
	 * Determines whether an offset value exists.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/arrayaccess.offsetexists.php
	 *
	 * @param mixed $offset An offset to check for.
	 * @return bool True if the offset exists, false otherwise.
	 */
	#[ReturnTypeWillChange]
	public function offsetExists( $offset ) {
		return isset( $this->callbacks[ $offset ] );
	}

/**
	 * Retrieves a value at a specified offset.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/arrayaccess.offsetget.php
	 *
	 * @param mixed $offset The offset to retrieve.
	 * @return mixed If set, the value at the specified offset, null otherwise.
	 */
	#[ReturnTypeWillChange]
	public function offsetGet( $offset ) {
		return isset( $this->callbacks[ $offset ] ) ? $this->callbacks[ $offset ] : null;
	}

/**
	 * Sets a value at a specified offset.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/arrayaccess.offsetset.php
	 *
	 * @param mixed $offset The offset to assign the value to.
	 * @param mixed $value The value to set.
	 */
	#[ReturnTypeWillChange]
	public function offsetSet( $offset, $value ) {
		if ( is_null( $offset ) ) {
			$this->callbacks[] = $value;
		} else {
			$this->callbacks[ $offset ] = $value;
		}

$this->priorities = array_keys( $this->callbacks );
	}

/**
	 * Unsets a specified offset.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/arrayaccess.offsetunset.php
	 *
	 * @param mixed $offset The offset to unset.
	 */
	#[ReturnTypeWillChange]
	public function offsetUnset( $offset ) {
		unset( $this->callbacks[ $offset ] );
		$this->priorities = array_keys( $this->callbacks );
	}

/**
	 * Returns the current element.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/iterator.current.php
	 *
	 * @return array Of callbacks at current priority.
	 */
	#[ReturnTypeWillChange]
	public function current() {
		return current( $this->callbacks );
	}

/**
	 * Moves forward to the next element.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/iterator.next.php
	 *
	 * @return array Of callbacks at next priority.
	 */
	#[ReturnTypeWillChange]
	public function next() {
		return next( $this->callbacks );
	}

/**
	 * Returns the key of the current element.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/iterator.key.php
	 *
	 * @return mixed Returns current priority on success, or NULL on failure
	 */
	#[ReturnTypeWillChange]
	public function key() {
		return key( $this->callbacks );
	}

/**
	 * Checks if current position is valid.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/iterator.valid.php
	 *
	 * @return bool Whether the current position is valid.
	 */
	#[ReturnTypeWillChange]
	public function valid() {
		return key( $this->callbacks ) !== null;
	}

/**
	 * Rewinds the Iterator to the first element.
	 *
	 * @since 4.7.0
	 *
	 * @link https://www.php.net/manual/en/iterator.rewind.php
	 */
	#[ReturnTypeWillChange]
	public function rewind() {
		reset( $this->callbacks );
	}
}
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/**
 * HTTPS migration functions.
 *
 * @package WordPress
 * @since 5.7.0
 */