<?php
/**
 * Author Template functions for use in themes.
 *
 * These functions must be used within the WordPress Loop.
 *
 * @link https://codex.wordpress.org/Author_Templates
 *
 * @package WordPress
 * @subpackage Template
 */

/**
 * Retrieve the author of the current post.
 *
 * @since 1.5.0
 *
 * @global WP_User $authordata The current author's data.
 *
 * @param string $deprecated Deprecated.
 * @return string|null The author's display name.
 */
function get_the_author( $deprecated = '' ) {
	global $authordata;

	if ( ! empty( $deprecated ) ) {
		_deprecated_argument( __FUNCTION__, '2.1.0' );
	}

	/**
	 * Filters the display name of the current post's author.
	 *
	 * @since 2.9.0
	 *
	 * @param string|null $display_name The author's display name.
	 */
	return apply_filters( 'the_author', is_object( $authordata ) ? $authordata->display_name : null );
}

/**
 * Display the name of the author of the current post.
 *
 * The behavior of this function is based off of old functionality predating
 * get_the_author(). This function is not deprecated, but is designed to echo
 * the value from get_the_author() and as an result of any old theme that might
 * still use the old behavior will also pass the value from get_the_author().
 *
 * The normal, expected behavior of this function is to echo the author and not
 * return it. However, backward compatibility has to be maintained.
 *
 * @since 0.71
 *
 * @see get_the_author()
 * @link https://developer.wordpress.org/reference/functions/the_author/
 *
 * @param string $deprecated      Deprecated.
 * @param bool   $deprecated_echo Deprecated. Use get_the_author(). Echo the string or return it.
 * @return string|null The author's display name, from get_the_author().
 */
function the_author( $deprecated = '', $deprecated_echo = true ) {
	if ( ! empty( $deprecated ) ) {
		_deprecated_argument( __FUNCTION__, '2.1.0' );
	}

	if ( true !== $deprecated_echo ) {
		_deprecated_argument(
			__FUNCTION__,
			'1.5.0',
			sprintf(
				/* translators: %s: get_the_author() */
				__( 'Use %s instead if you do not want the value echoed.' ),
				'<code>get_the_author()</code>'
			)
		);
	}

	if ( $deprecated_echo ) {
		echo get_the_author();
	}

	return get_the_author();
}

/**
 * Retrieve the author who last edited the current post.
 *
 * @since 2.8.0
 *
 * @return string|void The author's display name.
 */
function get_the_modified_author() {
	$last_id = get_post_meta( get_post()->ID, '_edit_last', true );

	if ( $last_id ) {
		$last_user = get_userdata( $last_id );

		/**
		 * Filters the display name of the author who last edited the current post.
		 *
		 * @since 2.8.0
		 *
		 * @param string $display_name The author's display name.
		 */
		return apply_filters( 'the_modified_author', $last_user->display_name );
	}
}

/**
 * Display the name of the author who last edited the current post,
 * if the author's ID is available.
 *
 * @since 2.8.0
 *
 * @see get_the_author()
 */
function the_modified_author() {
	echo get_the_modified_author();
}

/**
 * Retrieves the requested data of the author of the current post.
 *
 * Valid values for the `$field` parameter include:
 *
 * - admin_color
 * - aim
 * - comment_shortcuts
 * - description
 * - display_name
 * - first_name
 * - ID
 * - jabber
 * - last_name
 * - nickname
 * - plugins_last_view
 * - plugins_per_page
 * - rich_editing
 * - syntax_highlighting
 * - user_activation_key
 * - user_description
 * - user_email
 * - user_firstname
 * - user_lastname
 * - user_level
 * - user_login
 * - user_nicename
 * - user_pass
 * - user_registered
 * - user_status
 * - user_url
 * - yim
 *
 * @since 2.8.0
 *
 * @global WP_User $authordata The current author's data.
 *
 * @param string    $field   Optional. The user field to retrieve. Default empty.
 * @param int|false $user_id Optional. User ID.
 * @return string The author's field from the current author's DB object, otherwise an empty string.
 */
function get_the_author_meta( $field = '', $user_id = false ) {
	$original_user_id = $user_id;

	if ( ! $user_id ) {
		global $authordata;
		$user_id = isset( $authordata->ID ) ? $authordata->ID : 0;
	} else {
		$authordata = get_userdata( $user_id );
	}

	if ( in_array( $field, array( 'login', 'pass', 'nicename', 'email', 'url', 'registered', 'activation_key', 'status' ), true ) ) {
		$field = 'user_' . $field;
	}

	$value = isset( $authordata->$field ) ? $authordata->$field : '';

	/**
	 * Filters the value of the requested user metadata.
	 *
	 * The filter name is dynamic and depends on the $field parameter of the function.
	 *
	 * @since 2.8.0
	 * @since 4.3.0 The `$original_user_id` parameter was added.
	 *
	 * @param string    $value            The value of the metadata.
	 * @param int       $user_id          The user ID for the value.
	 * @param int|false $original_user_id The original user ID, as passed to the function.
	 */
	return apply_filters( "get_the_author_{$field}", $value, $user_id, $original_user_id );
}

/**
 * Outputs the field from the user's DB object. Defaults to current post's author.
 *
 * @since 2.8.0
 *
 * @param string    $field   Selects the field of the users record. See get_the_author_meta()
 *                           for the list of possible fields.
 * @param int|false $user_id Optional. User ID.
 *
 * @see get_the_author_meta()
 */
function the_author_meta( $field = '', $user_id = false ) {
	$author_meta = get_the_author_meta( $field, $user_id );

	/**
	 * The value of the requested user metadata.
	 *
	 * The filter name is dynamic and depends on the $field parameter of the function.
	 *
	 * @since 2.8.0
	 *
	 * @param string    $author_meta The value of the metadata.
	 * @param int|false $user_id     The user ID.
	 */
	echo apply_filters( "the_author_{$field}", $author_meta, $user_id );
}

/**
 * Retrieve either author's link or author's name.
 *
 * If the author has a home page set, return an HTML link, otherwise just return the
 * author's name.
 *
 * @since 3.0.0
 *
 * @return string|null An HTML link if the author's url exist in user meta,
 *                     else the result of get_the_author().
 */
function get_the_author_link() {
	if ( get_the_author_meta( 'url' ) ) {
		return sprintf(
			'<a href="%1$s" title="%2$s" rel="author external">%3$s</a>',
			esc_url( get_the_author_meta( 'url' ) ),
			/* translators: %s: Author's display name. */
			esc_attr( sprintf( __( 'Visit %s’s website' ), get_the_author() ) ),
			get_the_author()
		);
	} else {
		return get_the_author();
	}
}

/**
 * Display either author's link or author's name.
 *
 * If the author has a home page set, echo an HTML link, otherwise just echo the
 * author's name.
 *
 * @link https://developer.wordpress.org/reference/functions/the_author_link/
 *
 * @since 2.1.0
 */
function the_author_link() {
	echo get_the_author_link();
}

/**
 * Retrieve the number of posts by the author of the current post.
 *
 * @since 1.5.0
 *
 * @return int The number of posts by the author.
 */
function get_the_author_posts() {
	$post = get_post();
	if ( ! $post ) {
		return 0;
	}
	return count_user_posts( $post->post_author, $post->post_type );
}

/**
 * Display the number of posts by the author of the current post.
 *
 * @link https://developer.wordpress.org/reference/functions/the_author_posts/
 * @since 0.71
 */
function the_author_posts() {
	echo get_the_author_posts();
}

/**
 * Retrieves an HTML link to the author page of the current post's author.
 *
 * Returns an HTML-formatted link using get_author_posts_url().
 *
 * @since 4.4.0
 *
 * @global WP_User $authordata The current author's data.
 *
 * @return string An HTML link to the author page, or an empty string if $authordata isn't defined.
 */
function get_the_author_posts_link() {
	global $authordata;
	if ( ! is_object( $authordata ) ) {
		return '';
	}

	$link = sprintf(
		'<a href="%1$s" title="%2$s" rel="author">%3$s</a>',
		esc_url( get_author_posts_url( $authordata->ID, $authordata->user_nicename ) ),
		/* translators: %s: Author's display name. */
		esc_attr( sprintf( __( 'Posts by %s' ), get_the_author() ) ),
		get_the_author()
	);

	/**
	 * Filters the link to the author page of the author of the current post.
	 *
	 * @since 2.9.0
	 *
	 * @param string $link HTML link.
	 */
	return apply_filters( 'the_author_posts_link', $link );
}

/**
 * Displays an HTML link to the author page of the current post's author.
 *
 * @since 1.2.0
 * @since 4.4.0 Converted into a wrapper for get_the_author_posts_link()
 *
 * @param string $deprecated Unused.
 */
function the_author_posts_link( $deprecated = '' ) {
	if ( ! empty( $deprecated ) ) {
		_deprecated_argument( __FUNCTION__, '2.1.0' );
	}
	echo get_the_author_posts_link();
}

/**
 * Retrieve the URL to the author page for the user with the ID provided.
 *
 * @since 2.1.0
 *
 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
 *
 * @param int    $author_id       Author ID.
 * @param string $author_nicename Optional. The author's nicename (slug). Default empty.
 * @return string The URL to the author's page.
 */
function get_author_posts_url( $author_id, $author_nicename = '' ) {
	global $wp_rewrite;
	$auth_ID = (int) $author_id;
	$link    = $wp_rewrite->get_author_permastruct();

	if ( empty( $link ) ) {
		$file = home_url( '/' );
		$link = $file . '?author=' . $auth_ID;
	} else {
		if ( '' === $author_nicename ) {
			$user = get_userdata( $author_id );
			if ( ! empty( $user->user_nicename ) ) {
				$author_nicename = $user->user_nicename;
			}
		}
		$link = str_replace( '%author%', $author_nicename, $link );
		$link = home_url( user_trailingslashit( $link ) );
	}

	/**
	 * Filters the URL to the author's page.
	 *
	 * @since 2.1.0
	 *
	 * @param string $link            The URL to the author's page.
	 * @param int    $author_id       The author's ID.
	 * @param string $author_nicename The author's nice name.
	 */
	$link = apply_filters( 'author_link', $link, $author_id, $author_nicename );

	return $link;
}

/**
 * List all the authors of the site, with several options available.
 *
 * @link https://developer.wordpress.org/reference/functions/wp_list_authors/
 *
 * @since 1.2.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string|array $args {
 *     Optional. Array or string of default arguments.
 *
 *     @type string       $orderby       How to sort the authors. Accepts 'nicename', 'email', 'url', 'registered',
 *                                       'user_nicename', 'user_email', 'user_url', 'user_registered', 'name',
 *                                       'display_name', 'post_count', 'ID', 'meta_value', 'user_login'. Default 'name'.
 *     @type string       $order         Sorting direction for $orderby. Accepts 'ASC', 'DESC'. Default 'ASC'.
 *     @type int          $number        Maximum authors to return or display. Default empty (all authors).
 *     @type bool         $optioncount   Show the count in parenthesis next to the author's name. Default false.
 *     @type bool         $exclude_admin Whether to exclude the 'admin' account, if it exists. Default true.
 *     @type bool         $show_fullname Whether to show the author's full name. Default false.
 *     @type bool         $hide_empty    Whether to hide any authors with no posts. Default true.
 *     @type string       $feed          If not empty, show a link to the author's feed and use this text as the alt
 *                                       parameter of the link. Default empty.
 *     @type string       $feed_image    If not empty, show a link to the author's feed and use this image URL as
 *                                       clickable anchor. Default empty.
 *     @type string       $feed_type     The feed type to link to. Possible values include 'rss2', 'atom'.
 *                                       Default is the value of get_default_feed().
 *     @type bool         $echo          Whether to output the result or instead return it. Default true.
 *     @type string       $style         If 'list', each author is wrapped in an `<li>` element, otherwise the authors
 *                                       will be separated by commas.
 *     @type bool         $html          Whether to list the items in HTML form or plaintext. Default true.
 *     @type array|string $exclude       Array or comma/space-separated list of author IDs to exclude. Default empty.
 *     @type array|string $include       Array or comma/space-separated list of author IDs to include. Default empty.
 * }
 * @return void|string Void if 'echo' argument is true, list of authors if 'echo' is false.
 */
function wp_list_authors( $args = '' ) {
	global $wpdb;

	$defaults = array(
		'orderby'       => 'name',
		'order'         => 'ASC',
		'number'        => '',
		'optioncount'   => false,
		'exclude_admin' => true,
		'show_fullname' => false,
		'hide_empty'    => true,
		'feed'          => '',
		'feed_image'    => '',
		'feed_type'     => '',
		'echo'          => true,
		'style'         => 'list',
		'html'          => true,
		'exclude'       => '',
		'include'       => '',
	);

	$args = wp_parse_args( $args, $defaults );

	$return = '';

	$query_args           = wp_array_slice_assoc( $args, array( 'orderby', 'order', 'number', 'exclude', 'include' ) );
	$query_args['fields'] = 'ids';
	$authors              = get_users( $query_args );

	$author_count = array();
	foreach ( (array) $wpdb->get_results( "SELECT DISTINCT post_author, COUNT(ID) AS count FROM $wpdb->posts WHERE " . get_private_posts_cap_sql( 'post' ) . ' GROUP BY post_author' ) as $row ) {
		$author_count[ $row->post_author ] = $row->count;
	}
	foreach ( $authors as $author_id ) {
		$posts = isset( $author_count[ $author_id ] ) ? $author_count[ $author_id ] : 0;

		if ( ! $posts && $args['hide_empty'] ) {
			continue;
		}

		$author = get_userdata( $author_id );

		if ( $args['exclude_admin'] && 'admin' === $author->display_name ) {
			continue;
		}

		if ( $args['show_fullname'] && $author->first_name && $author->last_name ) {
			$name = "$author->first_name $author->last_name";
		} else {
			$name = $author->display_name;
		}

		if ( ! $args['html'] ) {
			$return .= $name . ', ';

			continue; // No need to go further to process HTML.
		}

		if ( 'list' === $args['style'] ) {
			$return .= '<li>';
		}

		$link = sprintf(
			'<a href="%1$s" title="%2$s">%3$s</a>',
			get_author_posts_url( $author->ID, $author->user_nicename ),
			/* translators: %s: Author's display name. */
			esc_attr( sprintf( __( 'Posts by %s' ), $author->display_name ) ),
			$name
		);

		if ( ! empty( $args['feed_image'] ) || ! empty( $args['feed'] ) ) {
			$link .= ' ';
			if ( empty( $args['feed_image'] ) ) {
				$link .= '(';
			}

			$link .= '<a href="' . get_author_feed_link( $author->ID, $args['feed_type'] ) . '"';

			$alt = '';
			if ( ! empty( $args['feed'] ) ) {
				$alt  = ' alt="' . esc_attr( $args['feed'] ) . '"';
				$name = $args['feed'];
			}

			$link .= '>';

			if ( ! empty( $args['feed_image'] ) ) {
				$link .= '<img src="' . esc_url( $args['feed_image'] ) . '" style="border: none;"' . $alt . ' />';
			} else {
				$link .= $name;
			}

			$link .= '</a>';

			if ( empty( $args['feed_image'] ) ) {
				$link .= ')';
			}
		}

		if ( $args['optioncount'] ) {
			$link .= ' (' . $posts . ')';
		}

		$return .= $link;
		$return .= ( 'list' === $args['style'] ) ? '</li>' : ', ';
	}

	$return = rtrim( $return, ', ' );

	if ( $args['echo'] ) {
		echo $return;
	} else {
		return $return;
	}
}

/**
 * Determines whether this site has more than one author.
 *
 * Checks to see if more than one author has published posts.
 *
 * 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 3.2.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @return bool Whether or not we have more than one author
 */
function is_multi_author() {
	global $wpdb;

	$is_multi_author = get_transient( 'is_multi_author' );
	if ( false === $is_multi_author ) {
		$rows            = (array) $wpdb->get_col( "SELECT DISTINCT post_author FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' LIMIT 2" );
		$is_multi_author = 1 < count( $rows ) ? 1 : 0;
		set_transient( 'is_multi_author', $is_multi_author );
	}

	/**
	 * Filters whether the site has more than one author with published posts.
	 *
	 * @since 3.2.0
	 *
	 * @param bool $is_multi_author Whether $is_multi_author should evaluate as true.
	 */
	return apply_filters( 'is_multi_author', (bool) $is_multi_author );
}

/**
 * Helper function to clear the cache for number of authors.
 *
 * @since 3.2.0
 * @access private
 */
function __clear_multi_author_cache() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionDoubleUnderscore,PHPCompatibility.FunctionNameRestrictions.ReservedFunctionNames.FunctionDoubleUnderscore
	delete_transient( 'is_multi_author' );
}
<?php
/**
 * Link/Bookmark API
 *
 * @package WordPress
 * @subpackage Bookmark
 */

/**
 * Retrieve Bookmark data
 *
 * @since 2.1.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param int|stdClass $bookmark
 * @param string       $output   Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
 *                               correspond to an stdClass object, an associative array, or a numeric array,
 *                               respectively. Default OBJECT.
 * @param string       $filter   Optional. How to sanitize bookmark fields. Default 'raw'.
 * @return array|object|null Type returned depends on $output value.
 */
function get_bookmark( $bookmark, $output = OBJECT, $filter = 'raw' ) {
	global $wpdb;

	if ( empty( $bookmark ) ) {
		if ( isset( $GLOBALS['link'] ) ) {
			$_bookmark = & $GLOBALS['link'];
		} else {
			$_bookmark = null;
		}
	} elseif ( is_object( $bookmark ) ) {
		wp_cache_add( $bookmark->link_id, $bookmark, 'bookmark' );
		$_bookmark = $bookmark;
	} else {
		if ( isset( $GLOBALS['link'] ) && ( $GLOBALS['link']->link_id == $bookmark ) ) {
			$_bookmark = & $GLOBALS['link'];
		} else {
			$_bookmark = wp_cache_get( $bookmark, 'bookmark' );
			if ( ! $_bookmark ) {
				$_bookmark = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->links WHERE link_id = %d LIMIT 1", $bookmark ) );
				if ( $_bookmark ) {
					$_bookmark->link_category = array_unique( wp_get_object_terms( $_bookmark->link_id, 'link_category', array( 'fields' => 'ids' ) ) );
					wp_cache_add( $_bookmark->link_id, $_bookmark, 'bookmark' );
				}
			}
		}
	}

	if ( ! $_bookmark ) {
		return $_bookmark;
	}

	$_bookmark = sanitize_bookmark( $_bookmark, $filter );

	if ( OBJECT == $output ) {
		return $_bookmark;
	} elseif ( ARRAY_A == $output ) {
		return get_object_vars( $_bookmark );
	} elseif ( ARRAY_N == $output ) {
		return array_values( get_object_vars( $_bookmark ) );
	} else {
		return $_bookmark;
	}
}

/**
 * Retrieve single bookmark data item or field.
 *
 * @since 2.3.0
 *
 * @param string $field    The name of the data field to return.
 * @param int    $bookmark The bookmark ID to get field.
 * @param string $context  Optional. The context of how the field will be used.
 * @return string|WP_Error
 */
function get_bookmark_field( $field, $bookmark, $context = 'display' ) {
	$bookmark = (int) $bookmark;
	$bookmark = get_bookmark( $bookmark );

	if ( is_wp_error( $bookmark ) ) {
		return $bookmark;
	}

	if ( ! is_object( $bookmark ) ) {
		return '';
	}

	if ( ! isset( $bookmark->$field ) ) {
		return '';
	}

	return sanitize_bookmark_field( $field, $bookmark->$field, $bookmark->link_id, $context );
}

/**
 * Retrieves the list of bookmarks
 *
 * Attempts to retrieve from the cache first based on MD5 hash of arguments. If
 * that fails, then the query will be built from the arguments and executed. The
 * results will be stored to the cache.
 *
 * @since 2.1.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string|array $args {
 *     Optional. String or array of arguments to retrieve bookmarks.
 *
 *     @type string   $orderby        How to order the links by. Accepts 'id', 'link_id', 'name', 'link_name',
 *                                    'url', 'link_url', 'visible', 'link_visible', 'rating', 'link_rating',
 *                                    'owner', 'link_owner', 'updated', 'link_updated', 'notes', 'link_notes',
 *                                    'description', 'link_description', 'length' and 'rand'.
 *                                    When `$orderby` is 'length', orders by the character length of
 *                                    'link_name'. Default 'name'.
 *     @type string   $order          Whether to order bookmarks in ascending or descending order.
 *                                    Accepts 'ASC' (ascending) or 'DESC' (descending). Default 'ASC'.
 *     @type int      $limit          Amount of bookmarks to display. Accepts any positive number or
 *                                    -1 for all.  Default -1.
 *     @type string   $category       Comma-separated list of category IDs to include links from.
 *                                    Default empty.
 *     @type string   $category_name  Category to retrieve links for by name. Default empty.
 *     @type int|bool $hide_invisible Whether to show or hide links marked as 'invisible'. Accepts
 *                                    1|true or 0|false. Default 1|true.
 *     @type int|bool $show_updated   Whether to display the time the bookmark was last updated.
 *                                    Accepts 1|true or 0|false. Default 0|false.
 *     @type string   $include        Comma-separated list of bookmark IDs to include. Default empty.
 *     @type string   $exclude        Comma-separated list of bookmark IDs to exclude. Default empty.
 *     @type string   $search         Search terms. Will be SQL-formatted with wildcards before and after
 *                                    and searched in 'link_url', 'link_name' and 'link_description'.
 *                                    Default empty.
 * }
 * @return object[] List of bookmark row objects.
 */
function get_bookmarks( $args = '' ) {
	global $wpdb;

	$defaults = array(
		'orderby'        => 'name',
		'order'          => 'ASC',
		'limit'          => -1,
		'category'       => '',
		'category_name'  => '',
		'hide_invisible' => 1,
		'show_updated'   => 0,
		'include'        => '',
		'exclude'        => '',
		'search'         => '',
	);

	$parsed_args = wp_parse_args( $args, $defaults );

	$key   = md5( serialize( $parsed_args ) );
	$cache = wp_cache_get( 'get_bookmarks', 'bookmark' );

	if ( 'rand' !== $parsed_args['orderby'] && $cache ) {
		if ( is_array( $cache ) && isset( $cache[ $key ] ) ) {
			$bookmarks = $cache[ $key ];
			/**
			 * Filters the returned list of bookmarks.
			 *
			 * The first time the hook is evaluated in this file, it returns the cached
			 * bookmarks list. The second evaluation returns a cached bookmarks list if the
			 * link category is passed but does not exist. The third evaluation returns
			 * the full cached results.
			 *
			 * @since 2.1.0
			 *
			 * @see get_bookmarks()
			 *
			 * @param array $bookmarks   List of the cached bookmarks.
			 * @param array $parsed_args An array of bookmark query arguments.
			 */
			return apply_filters( 'get_bookmarks', $bookmarks, $parsed_args );
		}
	}

	if ( ! is_array( $cache ) ) {
		$cache = array();
	}

	$inclusions = '';
	if ( ! empty( $parsed_args['include'] ) ) {
		$parsed_args['exclude']       = '';  // Ignore exclude, category, and category_name params if using include.
		$parsed_args['category']      = '';
		$parsed_args['category_name'] = '';

		$inclinks = wp_parse_id_list( $parsed_args['include'] );
		if ( count( $inclinks ) ) {
			foreach ( $inclinks as $inclink ) {
				if ( empty( $inclusions ) ) {
					$inclusions = ' AND ( link_id = ' . $inclink . ' ';
				} else {
					$inclusions .= ' OR link_id = ' . $inclink . ' ';
				}
			}
		}
	}
	if ( ! empty( $inclusions ) ) {
		$inclusions .= ')';
	}

	$exclusions = '';
	if ( ! empty( $parsed_args['exclude'] ) ) {
		$exlinks = wp_parse_id_list( $parsed_args['exclude'] );
		if ( count( $exlinks ) ) {
			foreach ( $exlinks as $exlink ) {
				if ( empty( $exclusions ) ) {
					$exclusions = ' AND ( link_id <> ' . $exlink . ' ';
				} else {
					$exclusions .= ' AND link_id <> ' . $exlink . ' ';
				}
			}
		}
	}
	if ( ! empty( $exclusions ) ) {
		$exclusions .= ')';
	}

	if ( ! empty( $parsed_args['category_name'] ) ) {
		$parsed_args['category'] = get_term_by( 'name', $parsed_args['category_name'], 'link_category' );
		if ( $parsed_args['category'] ) {
			$parsed_args['category'] = $parsed_args['category']->term_id;
		} else {
			$cache[ $key ] = array();
			wp_cache_set( 'get_bookmarks', $cache, 'bookmark' );
			/** This filter is documented in wp-includes/bookmark.php */
			return apply_filters( 'get_bookmarks', array(), $parsed_args );
		}
	}

	$search = '';
	if ( ! empty( $parsed_args['search'] ) ) {
		$like   = '%' . $wpdb->esc_like( $parsed_args['search'] ) . '%';
		$search = $wpdb->prepare( ' AND ( (link_url LIKE %s) OR (link_name LIKE %s) OR (link_description LIKE %s) ) ', $like, $like, $like );
	}

	$category_query = '';
	$join           = '';
	if ( ! empty( $parsed_args['category'] ) ) {
		$incategories = wp_parse_id_list( $parsed_args['category'] );
		if ( count( $incategories ) ) {
			foreach ( $incategories as $incat ) {
				if ( empty( $category_query ) ) {
					$category_query = ' AND ( tt.term_id = ' . $incat . ' ';
				} else {
					$category_query .= ' OR tt.term_id = ' . $incat . ' ';
				}
			}
		}
	}
	if ( ! empty( $category_query ) ) {
		$category_query .= ") AND taxonomy = 'link_category'";
		$join            = " INNER JOIN $wpdb->term_relationships AS tr ON ($wpdb->links.link_id = tr.object_id) INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_taxonomy_id = tr.term_taxonomy_id";
	}

	if ( $parsed_args['show_updated'] ) {
		$recently_updated_test = ', IF (DATE_ADD(link_updated, INTERVAL 120 MINUTE) >= NOW(), 1,0) as recently_updated ';
	} else {
		$recently_updated_test = '';
	}

	$get_updated = ( $parsed_args['show_updated'] ) ? ', UNIX_TIMESTAMP(link_updated) AS link_updated_f ' : '';

	$orderby = strtolower( $parsed_args['orderby'] );
	$length  = '';
	switch ( $orderby ) {
		case 'length':
			$length = ', CHAR_LENGTH(link_name) AS length';
			break;
		case 'rand':
			$orderby = 'rand()';
			break;
		case 'link_id':
			$orderby = "$wpdb->links.link_id";
			break;
		default:
			$orderparams = array();
			$keys        = array( 'link_id', 'link_name', 'link_url', 'link_visible', 'link_rating', 'link_owner', 'link_updated', 'link_notes', 'link_description' );
			foreach ( explode( ',', $orderby ) as $ordparam ) {
				$ordparam = trim( $ordparam );

				if ( in_array( 'link_' . $ordparam, $keys, true ) ) {
					$orderparams[] = 'link_' . $ordparam;
				} elseif ( in_array( $ordparam, $keys, true ) ) {
					$orderparams[] = $ordparam;
				}
			}
			$orderby = implode( ',', $orderparams );
	}

	if ( empty( $orderby ) ) {
		$orderby = 'link_name';
	}

	$order = strtoupper( $parsed_args['order'] );
	if ( '' !== $order && ! in_array( $order, array( 'ASC', 'DESC' ), true ) ) {
		$order = 'ASC';
	}

	$visible = '';
	if ( $parsed_args['hide_invisible'] ) {
		$visible = "AND link_visible = 'Y'";
	}

	$query  = "SELECT * $length $recently_updated_test $get_updated FROM $wpdb->links $join WHERE 1=1 $visible $category_query";
	$query .= " $exclusions $inclusions $search";
	$query .= " ORDER BY $orderby $order";
	if ( -1 != $parsed_args['limit'] ) {
		$query .= ' LIMIT ' . absint( $parsed_args['limit'] );
	}

	$results = $wpdb->get_results( $query );

	if ( 'rand()' !== $orderby ) {
		$cache[ $key ] = $results;
		wp_cache_set( 'get_bookmarks', $cache, 'bookmark' );
	}

	/** This filter is documented in wp-includes/bookmark.php */
	return apply_filters( 'get_bookmarks', $results, $parsed_args );
}

/**
 * Sanitizes all bookmark fields.
 *
 * @since 2.3.0
 *
 * @param stdClass|array $bookmark Bookmark row.
 * @param string         $context  Optional. How to filter the fields. Default 'display'.
 * @return stdClass|array Same type as $bookmark but with fields sanitized.
 */
function sanitize_bookmark( $bookmark, $context = 'display' ) {
	$fields = array(
		'link_id',
		'link_url',
		'link_name',
		'link_image',
		'link_target',
		'link_category',
		'link_description',
		'link_visible',
		'link_owner',
		'link_rating',
		'link_updated',
		'link_rel',
		'link_notes',
		'link_rss',
	);

	if ( is_object( $bookmark ) ) {
		$do_object = true;
		$link_id   = $bookmark->link_id;
	} else {
		$do_object = false;
		$link_id   = $bookmark['link_id'];
	}

	foreach ( $fields as $field ) {
		if ( $do_object ) {
			if ( isset( $bookmark->$field ) ) {
				$bookmark->$field = sanitize_bookmark_field( $field, $bookmark->$field, $link_id, $context );
			}
		} else {
			if ( isset( $bookmark[ $field ] ) ) {
				$bookmark[ $field ] = sanitize_bookmark_field( $field, $bookmark[ $field ], $link_id, $context );
			}
		}
	}

	return $bookmark;
}

/**
 * Sanitizes a bookmark field.
 *
 * Sanitizes the bookmark fields based on what the field name is. If the field
 * has a strict value set, then it will be tested for that, else a more generic
 * filtering is applied. After the more strict filter is applied, if the `$context`
 * is 'raw' then the value is immediately return.
 *
 * Hooks exist for the more generic cases. With the 'edit' context, the {@see 'edit_$field'}
 * filter will be called and passed the `$value` and `$bookmark_id` respectively.
 *
 * With the 'db' context, the {@see 'pre_$field'} filter is called and passed the value.
 * The 'display' context is the final context and has the `$field` has the filter name
 * and is passed the `$value`, `$bookmark_id`, and `$context`, respectively.
 *
 * @since 2.3.0
 *
 * @param string $field       The bookmark field.
 * @param mixed  $value       The bookmark field value.
 * @param int    $bookmark_id Bookmark ID.
 * @param string $context     How to filter the field value. Accepts 'raw', 'edit', 'attribute',
 *                            'js', 'db', or 'display'
 * @return mixed The filtered value.
 */
function sanitize_bookmark_field( $field, $value, $bookmark_id, $context ) {
	switch ( $field ) {
		case 'link_id': // ints
		case 'link_rating':
			$value = (int) $value;
			break;
		case 'link_category': // array( ints )
			$value = array_map( 'absint', (array) $value );
			// We return here so that the categories aren't filtered.
			// The 'link_category' filter is for the name of a link category, not an array of a link's link categories.
			return $value;

		case 'link_visible': // bool stored as Y|N
			$value = preg_replace( '/[^YNyn]/', '', $value );
			break;
		case 'link_target': // "enum"
			$targets = array( '_top', '_blank' );
			if ( ! in_array( $value, $targets, true ) ) {
				$value = '';
			}
			break;
	}

	if ( 'raw' === $context ) {
		return $value;
	}

	if ( 'edit' === $context ) {
		/** This filter is documented in wp-includes/post.php */
		$value = apply_filters( "edit_{$field}", $value, $bookmark_id );

		if ( 'link_notes' === $field ) {
			$value = esc_html( $value ); // textarea_escaped
		} else {
			$value = esc_attr( $value );
		}
	} elseif ( 'db' === $context ) {
		/** This filter is documented in wp-includes/post.php */
		$value = apply_filters( "pre_{$field}", $value );
	} else {
		/** This filter is documented in wp-includes/post.php */
		$value = apply_filters( "{$field}", $value, $bookmark_id, $context );

		if ( 'attribute' === $context ) {
			$value = esc_attr( $value );
		} elseif ( 'js' === $context ) {
			$value = esc_js( $value );
		}
	}

	return $value;
}

/**
 * Deletes the bookmark cache.
 *
 * @since 2.7.0
 *
 * @param int $bookmark_id Bookmark ID.
 */
function clean_bookmark_cache( $bookmark_id ) {
	wp_cache_delete( $bookmark_id, 'bookmark' );
	wp_cache_delete( 'get_bookmarks', 'bookmark' );
	clean_object_term_cache( $bookmark_id, 'link' );
}
<?php
/**
 * Bookmark Template Functions for usage in Themes
 *
 * @package WordPress
 * @subpackage Template
 */

/**
 * The formatted output of a list of bookmarks.
 *
 * The $bookmarks array must contain bookmark objects and will be iterated over
 * to retrieve the bookmark to be used in the output.
 *
 * The output is formatted as HTML with no way to change that format. However,
 * what is between, before, and after can be changed. The link itself will be
 * HTML.
 *
 * This function is used internally by wp_list_bookmarks() and should not be
 * used by themes.
 *
 * @since 2.1.0
 * @access private
 *
 * @param array        $bookmarks List of bookmarks to traverse.
 * @param string|array $args {
 *     Optional. Bookmarks arguments.
 *
 *     @type int|bool $show_updated     Whether to show the time the bookmark was last updated.
 *                                      Accepts 1|true or 0|false. Default 0|false.
 *     @type int|bool $show_description Whether to show the bookmark description. Accepts 1|true,
 *                                      Accepts 1|true or 0|false. Default 0|false.
 *     @type int|bool $show_images      Whether to show the link image if available. Accepts 1|true
 *                                      or 0|false. Default 1|true.
 *     @type int|bool $show_name        Whether to show link name if available. Accepts 1|true or
 *                                      0|false. Default 0|false.
 *     @type string   $before           The HTML or text to prepend to each bookmark. Default `<li>`.
 *     @type string   $after            The HTML or text to append to each bookmark. Default `</li>`.
 *     @type string   $link_before      The HTML or text to prepend to each bookmark inside the anchor
 *                                      tags. Default empty.
 *     @type string   $link_after       The HTML or text to append to each bookmark inside the anchor
 *                                      tags. Default empty.
 *     @type string   $between          The string for use in between the link, description, and image.
 *                                      Default "\n".
 *     @type int|bool $show_rating      Whether to show the link rating. Accepts 1|true or 0|false.
 *                                      Default 0|false.
 *
 * }
 * @return string Formatted output in HTML
 */
function _walk_bookmarks( $bookmarks, $args = '' ) {
	$defaults = array(
		'show_updated'     => 0,
		'show_description' => 0,
		'show_images'      => 1,
		'show_name'        => 0,
		'before'           => '<li>',
		'after'            => '</li>',
		'between'          => "\n",
		'show_rating'      => 0,
		'link_before'      => '',
		'link_after'       => '',
	);

	$parsed_args = wp_parse_args( $args, $defaults );

	$output = ''; // Blank string to start with.

	foreach ( (array) $bookmarks as $bookmark ) {
		if ( ! isset( $bookmark->recently_updated ) ) {
			$bookmark->recently_updated = false;
		}
		$output .= $parsed_args['before'];
		if ( $parsed_args['show_updated'] && $bookmark->recently_updated ) {
			$output .= '<em>';
		}
		$the_link = '#';
		if ( ! empty( $bookmark->link_url ) ) {
			$the_link = esc_url( $bookmark->link_url );
		}
		$desc  = esc_attr( sanitize_bookmark_field( 'link_description', $bookmark->link_description, $bookmark->link_id, 'display' ) );
		$name  = esc_attr( sanitize_bookmark_field( 'link_name', $bookmark->link_name, $bookmark->link_id, 'display' ) );
		$title = $desc;

		if ( $parsed_args['show_updated'] ) {
			if ( '00' !== substr( $bookmark->link_updated_f, 0, 2 ) ) {
				$title .= ' (';
				$title .= sprintf(
					/* translators: %s: Date and time of last update. */
					__( 'Last updated: %s' ),
					gmdate(
						get_option( 'links_updated_date_format' ),
						$bookmark->link_updated_f + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS )
					)
				);
				$title .= ')';
			}
		}
		$alt = ' alt="' . $name . ( $parsed_args['show_description'] ? ' ' . $title : '' ) . '"';

		if ( '' !== $title ) {
			$title = ' title="' . $title . '"';
		}
		$rel = $bookmark->link_rel;
		if ( '' !== $rel ) {
			$rel = ' rel="' . esc_attr( $rel ) . '"';
		}
		$target = $bookmark->link_target;
		if ( '' !== $target ) {
			$target = ' target="' . $target . '"';
		}
		$output .= '<a href="' . $the_link . '"' . $rel . $title . $target . '>';

		$output .= $parsed_args['link_before'];

		if ( null != $bookmark->link_image && $parsed_args['show_images'] ) {
			if ( strpos( $bookmark->link_image, 'http' ) === 0 ) {
				$output .= "<img src=\"$bookmark->link_image\" $alt $title />";
			} else { // If it's a relative path.
				$output .= '<img src="' . get_option( 'siteurl' ) . "$bookmark->link_image\" $alt $title />";
			}
			if ( $parsed_args['show_name'] ) {
				$output .= " $name";
			}
		} else {
			$output .= $name;
		}

		$output .= $parsed_args['link_after'];

		$output .= '</a>';

		if ( $parsed_args['show_updated'] && $bookmark->recently_updated ) {
			$output .= '</em>';
		}

		if ( $parsed_args['show_description'] && '' !== $desc ) {
			$output .= $parsed_args['between'] . $desc;
		}

		if ( $parsed_args['show_rating'] ) {
			$output .= $parsed_args['between'] . sanitize_bookmark_field(
				'link_rating',
				$bookmark->link_rating,
				$bookmark->link_id,
				'display'
			);
		}
		$output .= $parsed_args['after'] . "\n";
	} // End while.

	return $output;
}

/**
 * Retrieve or echo all of the bookmarks.
 *
 * List of default arguments are as follows:
 *
 * These options define how the Category name will appear before the category
 * links are displayed, if 'categorize' is 1. If 'categorize' is 0, then it will
 * display for only the 'title_li' string and only if 'title_li' is not empty.
 *
 * @since 2.1.0
 *
 * @see _walk_bookmarks()
 *
 * @param string|array $args {
 *     Optional. String or array of arguments to list bookmarks.
 *
 *     @type string   $orderby          How to order the links by. Accepts post fields. Default 'name'.
 *     @type string   $order            Whether to order bookmarks in ascending or descending order.
 *                                      Accepts 'ASC' (ascending) or 'DESC' (descending). Default 'ASC'.
 *     @type int      $limit            Amount of bookmarks to display. Accepts 1+ or -1 for all.
 *                                      Default -1.
 *     @type string   $category         Comma-separated list of category IDs to include links from.
 *                                      Default empty.
 *     @type string   $category_name    Category to retrieve links for by name. Default empty.
 *     @type int|bool $hide_invisible   Whether to show or hide links marked as 'invisible'. Accepts
 *                                      1|true or 0|false. Default 1|true.
 *     @type int|bool $show_updated     Whether to display the time the bookmark was last updated.
 *                                      Accepts 1|true or 0|false. Default 0|false.
 *     @type int|bool $echo             Whether to echo or return the formatted bookmarks. Accepts
 *                                      1|true (echo) or 0|false (return). Default 1|true.
 *     @type int|bool $categorize       Whether to show links listed by category or in a single column.
 *                                      Accepts 1|true (by category) or 0|false (one column). Default 1|true.
 *     @type int|bool $show_description Whether to show the bookmark descriptions. Accepts 1|true or 0|false.
 *                                      Default 0|false.
 *     @type string   $title_li         What to show before the links appear. Default 'Bookmarks'.
 *     @type string   $title_before     The HTML or text to prepend to the $title_li string. Default '<h2>'.
 *     @type string   $title_after      The HTML or text to append to the $title_li string. Default '</h2>'.
 *     @type string   $class            The CSS class to use for the $title_li. Default 'linkcat'.
 *     @type string   $category_before  The HTML or text to prepend to $title_before if $categorize is true.
 *                                      String must contain '%id' and '%class' to inherit the category ID and
 *                                      the $class argument used for formatting in themes.
 *                                      Default '<li id="%id" class="%class">'.
 *     @type string   $category_after   The HTML or text to append to $title_after if $categorize is true.
 *                                      Default '</li>'.
 *     @type string   $category_orderby How to order the bookmark category based on term scheme if $categorize
 *                                      is true. Default 'name'.
 *     @type string   $category_order   Whether to order categories in ascending or descending order if
 *                                      $categorize is true. Accepts 'ASC' (ascending) or 'DESC' (descending).
 *                                      Default 'ASC'.
 * }
 * @return void|string Void if 'echo' argument is true, HTML list of bookmarks if 'echo' is false.
 */
function wp_list_bookmarks( $args = '' ) {
	$defaults = array(
		'orderby'          => 'name',
		'order'            => 'ASC',
		'limit'            => -1,
		'category'         => '',
		'exclude_category' => '',
		'category_name'    => '',
		'hide_invisible'   => 1,
		'show_updated'     => 0,
		'echo'             => 1,
		'categorize'       => 1,
		'title_li'         => __( 'Bookmarks' ),
		'title_before'     => '<h2>',
		'title_after'      => '</h2>',
		'category_orderby' => 'name',
		'category_order'   => 'ASC',
		'class'            => 'linkcat',
		'category_before'  => '<li id="%id" class="%class">',
		'category_after'   => '</li>',
	);

	$parsed_args = wp_parse_args( $args, $defaults );

	$output = '';

	if ( ! is_array( $parsed_args['class'] ) ) {
		$parsed_args['class'] = explode( ' ', $parsed_args['class'] );
	}
	$parsed_args['class'] = array_map( 'sanitize_html_class', $parsed_args['class'] );
	$parsed_args['class'] = trim( join( ' ', $parsed_args['class'] ) );

	if ( $parsed_args['categorize'] ) {
		$cats = get_terms(
			array(
				'taxonomy'     => 'link_category',
				'name__like'   => $parsed_args['category_name'],
				'include'      => $parsed_args['category'],
				'exclude'      => $parsed_args['exclude_category'],
				'orderby'      => $parsed_args['category_orderby'],
				'order'        => $parsed_args['category_order'],
				'hierarchical' => 0,
			)
		);
		if ( empty( $cats ) ) {
			$parsed_args['categorize'] = false;
		}
	}

	if ( $parsed_args['categorize'] ) {
		// Split the bookmarks into ul's for each category.
		foreach ( (array) $cats as $cat ) {
			$params    = array_merge( $parsed_args, array( 'category' => $cat->term_id ) );
			$bookmarks = get_bookmarks( $params );
			if ( empty( $bookmarks ) ) {
				continue;
			}
			$output .= str_replace(
				array( '%id', '%class' ),
				array( "linkcat-$cat->term_id", $parsed_args['class'] ),
				$parsed_args['category_before']
			);
			/**
			 * Filters the category name.
			 *
			 * @since 2.2.0
			 *
			 * @param string $cat_name The category name.
			 */
			$catname = apply_filters( 'link_category', $cat->name );

			$output .= $parsed_args['title_before'];
			$output .= $catname;
			$output .= $parsed_args['title_after'];
			$output .= "\n\t<ul class='xoxo blogroll'>\n";
			$output .= _walk_bookmarks( $bookmarks, $parsed_args );
			$output .= "\n\t</ul>\n";
			$output .= $parsed_args['category_after'] . "\n";
		}
	} else {
		// Output one single list using title_li for the title.
		$bookmarks = get_bookmarks( $parsed_args );

		if ( ! empty( $bookmarks ) ) {
			if ( ! empty( $parsed_args['title_li'] ) ) {
				$output .= str_replace(
					array( '%id', '%class' ),
					array( 'linkcat-' . $parsed_args['category'], $parsed_args['class'] ),
					$parsed_args['category_before']
				);
				$output .= $parsed_args['title_before'];
				$output .= $parsed_args['title_li'];
				$output .= $parsed_args['title_after'];
				$output .= "\n\t<ul class='xoxo blogroll'>\n";
				$output .= _walk_bookmarks( $bookmarks, $parsed_args );
				$output .= "\n\t</ul>\n";
				$output .= $parsed_args['category_after'] . "\n";
			} else {
				$output .= _walk_bookmarks( $bookmarks, $parsed_args );
			}
		}
	}

	/**
	 * Filters the bookmarks list before it is echoed or returned.
	 *
	 * @since 2.5.0
	 *
	 * @param string $html The HTML list of bookmarks.
	 */
	$html = apply_filters( 'wp_list_bookmarks', $output );

	if ( $parsed_args['echo'] ) {
		echo $html;
	} else {
		return $html;
	}
}
<?php
/**
 * Toolbar API: Top-level Toolbar functionality
 *
 * @package WordPress
 * @subpackage Toolbar
 * @since 3.1.0
 */

/**
 * Instantiate the admin bar object and set it up as a global for access elsewhere.
 *
 * UNHOOKING THIS FUNCTION WILL NOT PROPERLY REMOVE THE ADMIN BAR.
 * For that, use show_admin_bar(false) or the {@see 'show_admin_bar'} filter.
 *
 * @since 3.1.0
 * @access private
 *
 * @global WP_Admin_Bar $wp_admin_bar
 *
 * @return bool Whether the admin bar was successfully initialized.
 */
function _wp_admin_bar_init() {
	global $wp_admin_bar;

	if ( ! is_admin_bar_showing() ) {
		return false;
	}

	/* Load the admin bar class code ready for instantiation */
	require_once ABSPATH . WPINC . '/class-wp-admin-bar.php';

	/* Instantiate the admin bar */

	/**
	 * Filters the admin bar class to instantiate.
	 *
	 * @since 3.1.0
	 *
	 * @param string $wp_admin_bar_class Admin bar class to use. Default 'WP_Admin_Bar'.
	 */
	$admin_bar_class = apply_filters( 'wp_admin_bar_class', 'WP_Admin_Bar' );
	if ( class_exists( $admin_bar_class ) ) {
		$wp_admin_bar = new $admin_bar_class;
	} else {
		return false;
	}

	$wp_admin_bar->initialize();
	$wp_admin_bar->add_menus();

	return true;
}

/**
 * Renders the admin bar to the page based on the $wp_admin_bar->menu member var.
 *
 * This is called very early on the {@see 'wp_body_open'} action so that it will render
 * before anything else being added to the page body.
 *
 * For backward compatibility with themes not using the 'wp_body_open' action,
 * the function is also called late on {@see 'wp_footer'}.
 *
 * It includes the {@see 'admin_bar_menu'} action which should be used to hook in and
 * add new menus to the admin bar. That way you can be sure that you are adding at most
 * optimal point, right before the admin bar is rendered. This also gives you access to
 * the `$post` global, among others.
 *
 * @since 3.1.0
 * @since 5.4.0 Called on 'wp_body_open' action first, with 'wp_footer' as a fallback.
 *
 * @global WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_render() {
	global $wp_admin_bar;
	static $rendered = false;

	if ( $rendered ) {
		return;
	}

	if ( ! is_admin_bar_showing() || ! is_object( $wp_admin_bar ) ) {
		return;
	}

	/**
	 * Load all necessary admin bar items.
	 *
	 * This is the hook used to add, remove, or manipulate admin bar items.
	 *
	 * @since 3.1.0
	 *
	 * @param WP_Admin_Bar $wp_admin_bar WP_Admin_Bar instance, passed by reference
	 */
	do_action_ref_array( 'admin_bar_menu', array( &$wp_admin_bar ) );

	/**
	 * Fires before the admin bar is rendered.
	 *
	 * @since 3.1.0
	 */
	do_action( 'wp_before_admin_bar_render' );

	$wp_admin_bar->render();

	/**
	 * Fires after the admin bar is rendered.
	 *
	 * @since 3.1.0
	 */
	do_action( 'wp_after_admin_bar_render' );

	$rendered = true;
}

/**
 * Add the WordPress logo menu.
 *
 * @since 3.3.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_wp_menu( $wp_admin_bar ) {
	if ( current_user_can( 'read' ) ) {
		$about_url = self_admin_url( 'about.php' );
	} elseif ( is_multisite() ) {
		$about_url = get_dashboard_url( get_current_user_id(), 'about.php' );
	} else {
		$about_url = false;
	}

	$wp_logo_menu_args = array(
		'id'    => 'wp-logo',
		'title' => '<span class="ab-icon"></span><span class="screen-reader-text">' . __( 'About WordPress' ) . '</span>',
		'href'  => $about_url,
	);

	// Set tabindex="0" to make sub menus accessible when no URL is available.
	if ( ! $about_url ) {
		$wp_logo_menu_args['meta'] = array(
			'tabindex' => 0,
		);
	}

	$wp_admin_bar->add_node( $wp_logo_menu_args );

	if ( $about_url ) {
		// Add "About WordPress" link.
		$wp_admin_bar->add_node(
			array(
				'parent' => 'wp-logo',
				'id'     => 'about',
				'title'  => __( 'About WordPress' ),
				'href'   => $about_url,
			)
		);
	}

	// Add WordPress.org link.
	$wp_admin_bar->add_node(
		array(
			'parent' => 'wp-logo-external',
			'id'     => 'wporg',
			'title'  => __( 'WordPress.org' ),
			'href'   => __( 'https://wordpress.org/' ),
		)
	);

	// Add Codex link.
	$wp_admin_bar->add_node(
		array(
			'parent' => 'wp-logo-external',
			'id'     => 'documentation',
			'title'  => __( 'Documentation' ),
			'href'   => __( 'https://codex.wordpress.org/' ),
		)
	);

	// Add forums link.
	$wp_admin_bar->add_node(
		array(
			'parent' => 'wp-logo-external',
			'id'     => 'support-forums',
			'title'  => __( 'Support' ),
			'href'   => __( 'https://wordpress.org/support/' ),
		)
	);

	// Add feedback link.
	$wp_admin_bar->add_node(
		array(
			'parent' => 'wp-logo-external',
			'id'     => 'feedback',
			'title'  => __( 'Feedback' ),
			'href'   => __( 'https://wordpress.org/support/forum/requests-and-feedback' ),
		)
	);
}

/**
 * Add the sidebar toggle button.
 *
 * @since 3.8.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_sidebar_toggle( $wp_admin_bar ) {
	if ( is_admin() ) {
		$wp_admin_bar->add_node(
			array(
				'id'    => 'menu-toggle',
				'title' => '<span class="ab-icon"></span><span class="screen-reader-text">' . __( 'Menu' ) . '</span>',
				'href'  => '#',
			)
		);
	}
}

/**
 * Add the "My Account" item.
 *
 * @since 3.3.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_my_account_item( $wp_admin_bar ) {
	$user_id      = get_current_user_id();
	$current_user = wp_get_current_user();

	if ( ! $user_id ) {
		return;
	}

	if ( current_user_can( 'read' ) ) {
		$profile_url = get_edit_profile_url( $user_id );
	} elseif ( is_multisite() ) {
		$profile_url = get_dashboard_url( $user_id, 'profile.php' );
	} else {
		$profile_url = false;
	}

	$avatar = get_avatar( $user_id, 26 );
	/* translators: %s: Current user's display name. */
	$howdy = sprintf( __( 'Howdy, %s' ), '<span class="display-name">' . $current_user->display_name . '</span>' );
	$class = empty( $avatar ) ? '' : 'with-avatar';

	$wp_admin_bar->add_node(
		array(
			'id'     => 'my-account',
			'parent' => 'top-secondary',
			'title'  => $howdy . $avatar,
			'href'   => $profile_url,
			'meta'   => array(
				'class' => $class,
			),
		)
	);
}

/**
 * Add the "My Account" submenu items.
 *
 * @since 3.1.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_my_account_menu( $wp_admin_bar ) {
	$user_id      = get_current_user_id();
	$current_user = wp_get_current_user();

	if ( ! $user_id ) {
		return;
	}

	if ( current_user_can( 'read' ) ) {
		$profile_url = get_edit_profile_url( $user_id );
	} elseif ( is_multisite() ) {
		$profile_url = get_dashboard_url( $user_id, 'profile.php' );
	} else {
		$profile_url = false;
	}

	$wp_admin_bar->add_group(
		array(
			'parent' => 'my-account',
			'id'     => 'user-actions',
		)
	);

	$user_info  = get_avatar( $user_id, 64 );
	$user_info .= "<span class='display-name'>{$current_user->display_name}</span>";

	if ( $current_user->display_name !== $current_user->user_login ) {
		$user_info .= "<span class='username'>{$current_user->user_login}</span>";
	}

	$wp_admin_bar->add_node(
		array(
			'parent' => 'user-actions',
			'id'     => 'user-info',
			'title'  => $user_info,
			'href'   => $profile_url,
			'meta'   => array(
				'tabindex' => -1,
			),
		)
	);

	if ( false !== $profile_url ) {
		$wp_admin_bar->add_node(
			array(
				'parent' => 'user-actions',
				'id'     => 'edit-profile',
				'title'  => __( 'Edit Profile' ),
				'href'   => $profile_url,
			)
		);
	}

	$wp_admin_bar->add_node(
		array(
			'parent' => 'user-actions',
			'id'     => 'logout',
			'title'  => __( 'Log Out' ),
			'href'   => wp_logout_url(),
		)
	);
}

/**
 * Add the "Site Name" menu.
 *
 * @since 3.3.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_site_menu( $wp_admin_bar ) {
	// Don't show for logged out users.
	if ( ! is_user_logged_in() ) {
		return;
	}

	// Show only when the user is a member of this site, or they're a super admin.
	if ( ! is_user_member_of_blog() && ! current_user_can( 'manage_network' ) ) {
		return;
	}

	$blogname = get_bloginfo( 'name' );

	if ( ! $blogname ) {
		$blogname = preg_replace( '#^(https?://)?(www.)?#', '', get_home_url() );
	}

	if ( is_network_admin() ) {
		/* translators: %s: Site title. */
		$blogname = sprintf( __( 'Network Admin: %s' ), esc_html( get_network()->site_name ) );
	} elseif ( is_user_admin() ) {
		/* translators: %s: Site title. */
		$blogname = sprintf( __( 'User Dashboard: %s' ), esc_html( get_network()->site_name ) );
	}

	$title = wp_html_excerpt( $blogname, 40, '…' );

	$wp_admin_bar->add_node(
		array(
			'id'    => 'site-name',
			'title' => $title,
			'href'  => ( is_admin() || ! current_user_can( 'read' ) ) ? home_url( '/' ) : admin_url(),
		)
	);

	// Create submenu items.

	if ( is_admin() ) {
		// Add an option to visit the site.
		$wp_admin_bar->add_node(
			array(
				'parent' => 'site-name',
				'id'     => 'view-site',
				'title'  => __( 'Visit Site' ),
				'href'   => home_url( '/' ),
			)
		);

		if ( is_blog_admin() && is_multisite() && current_user_can( 'manage_sites' ) ) {
			$wp_admin_bar->add_node(
				array(
					'parent' => 'site-name',
					'id'     => 'edit-site',
					'title'  => __( 'Edit Site' ),
					'href'   => network_admin_url( 'site-info.php?id=' . get_current_blog_id() ),
				)
			);
		}
	} elseif ( current_user_can( 'read' ) ) {
		// We're on the front end, link to the Dashboard.
		$wp_admin_bar->add_node(
			array(
				'parent' => 'site-name',
				'id'     => 'dashboard',
				'title'  => __( 'Dashboard' ),
				'href'   => admin_url(),
			)
		);

		// Add the appearance submenu items.
		wp_admin_bar_appearance_menu( $wp_admin_bar );
	}
}

/**
 * Adds the "Customize" link to the Toolbar.
 *
 * @since 4.3.0
 *
 * @param WP_Admin_Bar $wp_admin_bar WP_Admin_Bar instance.
 * @global WP_Customize_Manager $wp_customize
 */
function wp_admin_bar_customize_menu( $wp_admin_bar ) {
	global $wp_customize;

	// Don't show for users who can't access the customizer or when in the admin.
	if ( ! current_user_can( 'customize' ) || is_admin() ) {
		return;
	}

	// Don't show if the user cannot edit a given customize_changeset post currently being previewed.
	if ( is_customize_preview() && $wp_customize->changeset_post_id()
		&& ! current_user_can( get_post_type_object( 'customize_changeset' )->cap->edit_post, $wp_customize->changeset_post_id() )
	) {
		return;
	}

	$current_url = ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
	if ( is_customize_preview() && $wp_customize->changeset_uuid() ) {
		$current_url = remove_query_arg( 'customize_changeset_uuid', $current_url );
	}

	$customize_url = add_query_arg( 'url', urlencode( $current_url ), wp_customize_url() );
	if ( is_customize_preview() ) {
		$customize_url = add_query_arg( array( 'changeset_uuid' => $wp_customize->changeset_uuid() ), $customize_url );
	}

	$wp_admin_bar->add_node(
		array(
			'id'    => 'customize',
			'title' => __( 'Customize' ),
			'href'  => $customize_url,
			'meta'  => array(
				'class' => 'hide-if-no-customize',
			),
		)
	);
	add_action( 'wp_before_admin_bar_render', 'wp_customize_support_script' );
}

/**
 * Add the "My Sites/[Site Name]" menu and all submenus.
 *
 * @since 3.1.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_my_sites_menu( $wp_admin_bar ) {
	// Don't show for logged out users or single site mode.
	if ( ! is_user_logged_in() || ! is_multisite() ) {
		return;
	}

	// Show only when the user has at least one site, or they're a super admin.
	if ( count( $wp_admin_bar->user->blogs ) < 1 && ! current_user_can( 'manage_network' ) ) {
		return;
	}

	if ( $wp_admin_bar->user->active_blog ) {
		$my_sites_url = get_admin_url( $wp_admin_bar->user->active_blog->blog_id, 'my-sites.php' );
	} else {
		$my_sites_url = admin_url( 'my-sites.php' );
	}

	$wp_admin_bar->add_node(
		array(
			'id'    => 'my-sites',
			'title' => __( 'My Sites' ),
			'href'  => $my_sites_url,
		)
	);

	if ( current_user_can( 'manage_network' ) ) {
		$wp_admin_bar->add_group(
			array(
				'parent' => 'my-sites',
				'id'     => 'my-sites-super-admin',
			)
		);

		$wp_admin_bar->add_node(
			array(
				'parent' => 'my-sites-super-admin',
				'id'     => 'network-admin',
				'title'  => __( 'Network Admin' ),
				'href'   => network_admin_url(),
			)
		);

		$wp_admin_bar->add_node(
			array(
				'parent' => 'network-admin',
				'id'     => 'network-admin-d',
				'title'  => __( 'Dashboard' ),
				'href'   => network_admin_url(),
			)
		);

		if ( current_user_can( 'manage_sites' ) ) {
			$wp_admin_bar->add_node(
				array(
					'parent' => 'network-admin',
					'id'     => 'network-admin-s',
					'title'  => __( 'Sites' ),
					'href'   => network_admin_url( 'sites.php' ),
				)
			);
		}

		if ( current_user_can( 'manage_network_users' ) ) {
			$wp_admin_bar->add_node(
				array(
					'parent' => 'network-admin',
					'id'     => 'network-admin-u',
					'title'  => __( 'Users' ),
					'href'   => network_admin_url( 'users.php' ),
				)
			);
		}

		if ( current_user_can( 'manage_network_themes' ) ) {
			$wp_admin_bar->add_node(
				array(
					'parent' => 'network-admin',
					'id'     => 'network-admin-t',
					'title'  => __( 'Themes' ),
					'href'   => network_admin_url( 'themes.php' ),
				)
			);
		}

		if ( current_user_can( 'manage_network_plugins' ) ) {
			$wp_admin_bar->add_node(
				array(
					'parent' => 'network-admin',
					'id'     => 'network-admin-p',
					'title'  => __( 'Plugins' ),
					'href'   => network_admin_url( 'plugins.php' ),
				)
			);
		}

		if ( current_user_can( 'manage_network_options' ) ) {
			$wp_admin_bar->add_node(
				array(
					'parent' => 'network-admin',
					'id'     => 'network-admin-o',
					'title'  => __( 'Settings' ),
					'href'   => network_admin_url( 'settings.php' ),
				)
			);
		}
	}

	// Add site links.
	$wp_admin_bar->add_group(
		array(
			'parent' => 'my-sites',
			'id'     => 'my-sites-list',
			'meta'   => array(
				'class' => current_user_can( 'manage_network' ) ? 'ab-sub-secondary' : '',
			),
		)
	);

	foreach ( (array) $wp_admin_bar->user->blogs as $blog ) {
		switch_to_blog( $blog->userblog_id );

		$blavatar = '<div class="blavatar"></div>';

		$blogname = $blog->blogname;

		if ( ! $blogname ) {
			$blogname = preg_replace( '#^(https?://)?(www.)?#', '', get_home_url() );
		}

		$menu_id = 'blog-' . $blog->userblog_id;

		if ( current_user_can( 'read' ) ) {
			$wp_admin_bar->add_node(
				array(
					'parent' => 'my-sites-list',
					'id'     => $menu_id,
					'title'  => $blavatar . $blogname,
					'href'   => admin_url(),
				)
			);

			$wp_admin_bar->add_node(
				array(
					'parent' => $menu_id,
					'id'     => $menu_id . '-d',
					'title'  => __( 'Dashboard' ),
					'href'   => admin_url(),
				)
			);
		} else {
			$wp_admin_bar->add_node(
				array(
					'parent' => 'my-sites-list',
					'id'     => $menu_id,
					'title'  => $blavatar . $blogname,
					'href'   => home_url(),
				)
			);
		}

		if ( current_user_can( get_post_type_object( 'post' )->cap->create_posts ) ) {
			$wp_admin_bar->add_node(
				array(
					'parent' => $menu_id,
					'id'     => $menu_id . '-n',
					'title'  => get_post_type_object( 'post' )->labels->new_item,
					'href'   => admin_url( 'post-new.php' ),
				)
			);
		}

		if ( current_user_can( 'edit_posts' ) ) {
			$wp_admin_bar->add_node(
				array(
					'parent' => $menu_id,
					'id'     => $menu_id . '-c',
					'title'  => __( 'Manage Comments' ),
					'href'   => admin_url( 'edit-comments.php' ),
				)
			);
		}

		$wp_admin_bar->add_node(
			array(
				'parent' => $menu_id,
				'id'     => $menu_id . '-v',
				'title'  => __( 'Visit Site' ),
				'href'   => home_url( '/' ),
			)
		);

		restore_current_blog();
	}
}

/**
 * Provide a shortlink.
 *
 * @since 3.1.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_shortlink_menu( $wp_admin_bar ) {
	$short = wp_get_shortlink( 0, 'query' );
	$id    = 'get-shortlink';

	if ( empty( $short ) ) {
		return;
	}

	$html = '<input class="shortlink-input" type="text" readonly="readonly" value="' . esc_attr( $short ) . '" />';

	$wp_admin_bar->add_node(
		array(
			'id'    => $id,
			'title' => __( 'Shortlink' ),
			'href'  => $short,
			'meta'  => array( 'html' => $html ),
		)
	);
}

/**
 * Provide an edit link for posts and terms.
 *
 * @since 3.1.0
 *
 * @global WP_Term  $tag
 * @global WP_Query $wp_the_query WordPress Query object.
 * @global int      $user_id      The ID of the user being edited. Not to be confused with the
 *                                global $user_ID, which contains the ID of the current user.
 * @global int      $post_id      The ID of the post when editing comments for a single post.
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_edit_menu( $wp_admin_bar ) {
	global $tag, $wp_the_query, $user_id, $post_id;

	if ( is_admin() ) {
		$current_screen   = get_current_screen();
		$post             = get_post();
		$post_type_object = null;

		if ( 'post' === $current_screen->base ) {
			$post_type_object = get_post_type_object( $post->post_type );
		} elseif ( 'edit' === $current_screen->base ) {
			$post_type_object = get_post_type_object( $current_screen->post_type );
		} elseif ( 'edit-comments' === $current_screen->base && $post_id ) {
			$post = get_post( $post_id );
			if ( $post ) {
				$post_type_object = get_post_type_object( $post->post_type );
			}
		}

		if ( ( 'post' === $current_screen->base || 'edit-comments' === $current_screen->base )
			&& 'add' !== $current_screen->action
			&& ( $post_type_object )
			&& current_user_can( 'read_post', $post->ID )
			&& ( $post_type_object->public )
			&& ( $post_type_object->show_in_admin_bar ) ) {
			if ( 'draft' === $post->post_status ) {
				$preview_link = get_preview_post_link( $post );
				$wp_admin_bar->add_node(
					array(
						'id'    => 'preview',
						'title' => $post_type_object->labels->view_item,
						'href'  => esc_url( $preview_link ),
						'meta'  => array( 'target' => 'wp-preview-' . $post->ID ),
					)
				);
			} else {
				$wp_admin_bar->add_node(
					array(
						'id'    => 'view',
						'title' => $post_type_object->labels->view_item,
						'href'  => get_permalink( $post->ID ),
					)
				);
			}
		} elseif ( 'edit' === $current_screen->base
			&& ( $post_type_object )
			&& ( $post_type_object->public )
			&& ( $post_type_object->show_in_admin_bar )
			&& ( get_post_type_archive_link( $post_type_object->name ) )
			&& ! ( 'post' === $post_type_object->name && 'posts' === get_option( 'show_on_front' ) ) ) {
			$wp_admin_bar->add_node(
				array(
					'id'    => 'archive',
					'title' => $post_type_object->labels->view_items,
					'href'  => get_post_type_archive_link( $current_screen->post_type ),
				)
			);
		} elseif ( 'term' === $current_screen->base && isset( $tag ) && is_object( $tag ) && ! is_wp_error( $tag ) ) {
			$tax = get_taxonomy( $tag->taxonomy );
			if ( is_taxonomy_viewable( $tax ) ) {
				$wp_admin_bar->add_node(
					array(
						'id'    => 'view',
						'title' => $tax->labels->view_item,
						'href'  => get_term_link( $tag ),
					)
				);
			}
		} elseif ( 'user-edit' === $current_screen->base && isset( $user_id ) ) {
			$user_object = get_userdata( $user_id );
			$view_link   = get_author_posts_url( $user_object->ID );
			if ( $user_object->exists() && $view_link ) {
				$wp_admin_bar->add_node(
					array(
						'id'    => 'view',
						'title' => __( 'View User' ),
						'href'  => $view_link,
					)
				);
			}
		}
	} else {
		$current_object = $wp_the_query->get_queried_object();

		if ( empty( $current_object ) ) {
			return;
		}

		if ( ! empty( $current_object->post_type ) ) {
			$post_type_object = get_post_type_object( $current_object->post_type );
			$edit_post_link   = get_edit_post_link( $current_object->ID );
			if ( $post_type_object
				&& $edit_post_link
				&& current_user_can( 'edit_post', $current_object->ID )
				&& $post_type_object->show_in_admin_bar ) {
				$wp_admin_bar->add_node(
					array(
						'id'    => 'edit',
						'title' => $post_type_object->labels->edit_item,
						'href'  => $edit_post_link,
					)
				);
			}
		} elseif ( ! empty( $current_object->taxonomy ) ) {
			$tax            = get_taxonomy( $current_object->taxonomy );
			$edit_term_link = get_edit_term_link( $current_object->term_id, $current_object->taxonomy );
			if ( $tax && $edit_term_link && current_user_can( 'edit_term', $current_object->term_id ) ) {
				$wp_admin_bar->add_node(
					array(
						'id'    => 'edit',
						'title' => $tax->labels->edit_item,
						'href'  => $edit_term_link,
					)
				);
			}
		} elseif ( is_a( $current_object, 'WP_User' ) && current_user_can( 'edit_user', $current_object->ID ) ) {
			$edit_user_link = get_edit_user_link( $current_object->ID );
			if ( $edit_user_link ) {
				$wp_admin_bar->add_node(
					array(
						'id'    => 'edit',
						'title' => __( 'Edit User' ),
						'href'  => $edit_user_link,
					)
				);
			}
		}
	}
}

/**
 * Add "Add New" menu.
 *
 * @since 3.1.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_new_content_menu( $wp_admin_bar ) {
	$actions = array();

	$cpts = (array) get_post_types( array( 'show_in_admin_bar' => true ), 'objects' );

	if ( isset( $cpts['post'] ) && current_user_can( $cpts['post']->cap->create_posts ) ) {
		$actions['post-new.php'] = array( $cpts['post']->labels->name_admin_bar, 'new-post' );
	}

	if ( isset( $cpts['attachment'] ) && current_user_can( 'upload_files' ) ) {
		$actions['media-new.php'] = array( $cpts['attachment']->labels->name_admin_bar, 'new-media' );
	}

	if ( current_user_can( 'manage_links' ) ) {
		$actions['link-add.php'] = array( _x( 'Link', 'add new from admin bar' ), 'new-link' );
	}

	if ( isset( $cpts['page'] ) && current_user_can( $cpts['page']->cap->create_posts ) ) {
		$actions['post-new.php?post_type=page'] = array( $cpts['page']->labels->name_admin_bar, 'new-page' );
	}

	unset( $cpts['post'], $cpts['page'], $cpts['attachment'] );

	// Add any additional custom post types.
	foreach ( $cpts as $cpt ) {
		if ( ! current_user_can( $cpt->cap->create_posts ) ) {
			continue;
		}

		$key             = 'post-new.php?post_type=' . $cpt->name;
		$actions[ $key ] = array( $cpt->labels->name_admin_bar, 'new-' . $cpt->name );
	}
	// Avoid clash with parent node and a 'content' post type.
	if ( isset( $actions['post-new.php?post_type=content'] ) ) {
		$actions['post-new.php?post_type=content'][1] = 'add-new-content';
	}

	if ( current_user_can( 'create_users' ) || ( is_multisite() && current_user_can( 'promote_users' ) ) ) {
		$actions['user-new.php'] = array( _x( 'User', 'add new from admin bar' ), 'new-user' );
	}

	if ( ! $actions ) {
		return;
	}

	$title = '<span class="ab-icon"></span><span class="ab-label">' . _x( 'New', 'admin bar menu group label' ) . '</span>';

	$wp_admin_bar->add_node(
		array(
			'id'    => 'new-content',
			'title' => $title,
			'href'  => admin_url( current( array_keys( $actions ) ) ),
		)
	);

	foreach ( $actions as $link => $action ) {
		list( $title, $id ) = $action;

		$wp_admin_bar->add_node(
			array(
				'parent' => 'new-content',
				'id'     => $id,
				'title'  => $title,
				'href'   => admin_url( $link ),
			)
		);
	}
}

/**
 * Add edit comments link with awaiting moderation count bubble.
 *
 * @since 3.1.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_comments_menu( $wp_admin_bar ) {
	if ( ! current_user_can( 'edit_posts' ) ) {
		return;
	}

	$awaiting_mod  = wp_count_comments();
	$awaiting_mod  = $awaiting_mod->moderated;
	$awaiting_text = sprintf(
		/* translators: %s: Number of comments. */
		_n( '%s Comment in moderation', '%s Comments in moderation', $awaiting_mod ),
		number_format_i18n( $awaiting_mod )
	);

	$icon   = '<span class="ab-icon"></span>';
	$title  = '<span class="ab-label awaiting-mod pending-count count-' . $awaiting_mod . '" aria-hidden="true">' . number_format_i18n( $awaiting_mod ) . '</span>';
	$title .= '<span class="screen-reader-text comments-in-moderation-text">' . $awaiting_text . '</span>';

	$wp_admin_bar->add_node(
		array(
			'id'    => 'comments',
			'title' => $icon . $title,
			'href'  => admin_url( 'edit-comments.php' ),
		)
	);
}

/**
 * Add appearance submenu items to the "Site Name" menu.
 *
 * @since 3.1.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_appearance_menu( $wp_admin_bar ) {
	$wp_admin_bar->add_group(
		array(
			'parent' => 'site-name',
			'id'     => 'appearance',
		)
	);

	if ( current_user_can( 'switch_themes' ) ) {
		$wp_admin_bar->add_node(
			array(
				'parent' => 'appearance',
				'id'     => 'themes',
				'title'  => __( 'Themes' ),
				'href'   => admin_url( 'themes.php' ),
			)
		);
	}

	if ( ! current_user_can( 'edit_theme_options' ) ) {
		return;
	}

	if ( current_theme_supports( 'widgets' ) ) {
		$wp_admin_bar->add_node(
			array(
				'parent' => 'appearance',
				'id'     => 'widgets',
				'title'  => __( 'Widgets' ),
				'href'   => admin_url( 'widgets.php' ),
			)
		);
	}

	if ( current_theme_supports( 'menus' ) || current_theme_supports( 'widgets' ) ) {
		$wp_admin_bar->add_node(
			array(
				'parent' => 'appearance',
				'id'     => 'menus',
				'title'  => __( 'Menus' ),
				'href'   => admin_url( 'nav-menus.php' ),
			)
		);
	}

	if ( current_theme_supports( 'custom-background' ) ) {
		$wp_admin_bar->add_node(
			array(
				'parent' => 'appearance',
				'id'     => 'background',
				'title'  => __( 'Background' ),
				'href'   => admin_url( 'themes.php?page=custom-background' ),
				'meta'   => array(
					'class' => 'hide-if-customize',
				),
			)
		);
	}

	if ( current_theme_supports( 'custom-header' ) ) {
		$wp_admin_bar->add_node(
			array(
				'parent' => 'appearance',
				'id'     => 'header',
				'title'  => __( 'Header' ),
				'href'   => admin_url( 'themes.php?page=custom-header' ),
				'meta'   => array(
					'class' => 'hide-if-customize',
				),
			)
		);
	}

}

/**
 * Provide an update link if theme/plugin/core updates are available.
 *
 * @since 3.1.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_updates_menu( $wp_admin_bar ) {

	$update_data = wp_get_update_data();

	if ( ! $update_data['counts']['total'] ) {
		return;
	}

	$title  = '<span class="ab-icon"></span><span class="ab-label">' . number_format_i18n( $update_data['counts']['total'] ) . '</span>';
	$title .= '<span class="screen-reader-text">' . $update_data['title'] . '</span>';

	$wp_admin_bar->add_node(
		array(
			'id'    => 'updates',
			'title' => $title,
			'href'  => network_admin_url( 'update-core.php' ),
			'meta'  => array(
				'title' => $update_data['title'],
			),
		)
	);
}

/**
 * Add search form.
 *
 * @since 3.3.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_search_menu( $wp_admin_bar ) {
	if ( is_admin() ) {
		return;
	}

	$form  = '<form action="' . esc_url( home_url( '/' ) ) . '" method="get" id="adminbarsearch">';
	$form .= '<input class="adminbar-input" name="s" id="adminbar-search" type="text" value="" maxlength="150" />';
	$form .= '<label for="adminbar-search" class="screen-reader-text">' . __( 'Search' ) . '</label>';
	$form .= '<input type="submit" class="adminbar-button" value="' . __( 'Search' ) . '"/>';
	$form .= '</form>';

	$wp_admin_bar->add_node(
		array(
			'parent' => 'top-secondary',
			'id'     => 'search',
			'title'  => $form,
			'meta'   => array(
				'class'    => 'admin-bar-search',
				'tabindex' => -1,
			),
		)
	);
}

/**
 * Add a link to exit recovery mode when Recovery Mode is active.
 *
 * @since 5.2.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_recovery_mode_menu( $wp_admin_bar ) {
	if ( ! wp_is_recovery_mode() ) {
		return;
	}

	$url = wp_login_url();
	$url = add_query_arg( 'action', WP_Recovery_Mode::EXIT_ACTION, $url );
	$url = wp_nonce_url( $url, WP_Recovery_Mode::EXIT_ACTION );

	$wp_admin_bar->add_node(
		array(
			'parent' => 'top-secondary',
			'id'     => 'recovery-mode',
			'title'  => __( 'Exit Recovery Mode' ),
			'href'   => $url,
		)
	);
}

/**
 * Add secondary menus.
 *
 * @since 3.3.0
 *
 * @param WP_Admin_Bar $wp_admin_bar
 */
function wp_admin_bar_add_secondary_groups( $wp_admin_bar ) {
	$wp_admin_bar->add_group(
		array(
			'id'   => 'top-secondary',
			'meta' => array(
				'class' => 'ab-top-secondary',
			),
		)
	);

	$wp_admin_bar->add_group(
		array(
			'parent' => 'wp-logo',
			'id'     => 'wp-logo-external',
			'meta'   => array(
				'class' => 'ab-sub-secondary',
			),
		)
	);
}

/**
 * Style and scripts for the admin bar.
 *
 * @since 3.1.0
 */
function wp_admin_bar_header() {
	$type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"';
	?>
<style<?php echo $type_attr; ?> media="print">#wpadminbar { display:none; }</style>
	<?php
}

/**
 * Default admin bar callback.
 *
 * @since 3.1.0
 */
function _admin_bar_bump_cb() {
	$type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"';
	?>
<style<?php echo $type_attr; ?> media="screen">
	html { margin-top: 32px !important; }
	* html body { margin-top: 32px !important; }
	@media screen and ( max-width: 782px ) {
		html { margin-top: 46px !important; }
		* html body { margin-top: 46px !important; }
	}
</style>
	<?php
}

/**
 * Sets the display status of the admin bar.
 *
 * This can be called immediately upon plugin load. It does not need to be called
 * from a function hooked to the {@see 'init'} action.
 *
 * @since 3.1.0
 *
 * @global bool $show_admin_bar
 *
 * @param bool $show Whether to allow the admin bar to show.
 */
function show_admin_bar( $show ) {
	global $show_admin_bar;
	$show_admin_bar = (bool) $show;
}

/**
 * Determines whether the admin bar should be showing.
 *
 * 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 3.1.0
 *
 * @global bool   $show_admin_bar
 * @global string $pagenow
 *
 * @return bool Whether the admin bar should be showing.
 */
function is_admin_bar_showing() {
	global $show_admin_bar, $pagenow;

	// For all these types of requests, we never want an admin bar.
	if ( defined( 'XMLRPC_REQUEST' ) || defined( 'DOING_AJAX' ) || defined( 'IFRAME_REQUEST' ) || wp_is_json_request() ) {
		return false;
	}

	if ( is_embed() ) {
		return false;
	}

	// Integrated into the admin.
	if ( is_admin() ) {
		return true;
	}

	if ( ! isset( $show_admin_bar ) ) {
		if ( ! is_user_logged_in() || 'wp-login.php' === $pagenow ) {
			$show_admin_bar = false;
		} else {
			$show_admin_bar = _get_admin_bar_pref();
		}
	}

	/**
	 * Filters whether to show the admin bar.
	 *
	 * Returning false to this hook is the recommended way to hide the admin bar.
	 * The user's display preference is used for logged in users.
	 *
	 * @since 3.1.0
	 *
	 * @param bool $show_admin_bar Whether the admin bar should be shown. Default false.
	 */
	$show_admin_bar = apply_filters( 'show_admin_bar', $show_admin_bar );

	return $show_admin_bar;
}

/**
 * Retrieve the admin bar display preference of a user.
 *
 * @since 3.1.0
 * @access private
 *
 * @param string $context Context of this preference check. Defaults to 'front'. The 'admin'
 *                        preference is no longer used.
 * @param int    $user    Optional. ID of the user to check, defaults to 0 for current user.
 * @return bool Whether the admin bar should be showing for this user.
 */
function _get_admin_bar_pref( $context = 'front', $user = 0 ) {
	$pref = get_user_option( "show_admin_bar_{$context}", $user );
	if ( false === $pref ) {
		return true;
	}

	return 'true' === $pref;
}
<?php
/**
 * Functions related to registering and parsing blocks.
 *
 * @package WordPress
 * @subpackage Blocks
 * @since 5.0.0
 */

/**
 * Registers a block type.
 *
 * @since 5.0.0
 *
 * @param string|WP_Block_Type $name Block type name including namespace, or alternatively
 *                                   a complete WP_Block_Type instance. In case a WP_Block_Type
 *                                   is provided, the $args parameter will be ignored.
 * @param array                $args {
 *     Optional. Array of block type arguments. Accepts any public property of `WP_Block_Type`.
 *     Any arguments may be defined, however the ones described below are supported by default.
 *     Default empty array.
 *
 *     @type callable $render_callback Callback used to render blocks of this block type.
 * }
 * @return WP_Block_Type|false The registered block type on success, or false on failure.
 */
function register_block_type( $name, $args = array() ) {
	return WP_Block_Type_Registry::get_instance()->register( $name, $args );
}

/**
 * Unregisters a block type.
 *
 * @since 5.0.0
 *
 * @param string|WP_Block_Type $name Block type name including namespace, or alternatively
 *                                   a complete WP_Block_Type instance.
 * @return WP_Block_Type|false The unregistered block type on success, or false on failure.
 */
function unregister_block_type( $name ) {
	return WP_Block_Type_Registry::get_instance()->unregister( $name );
}

/**
 * Removes the block asset's path prefix if provided.
 *
 * @since 5.5.0
 *
 * @param string $asset_handle_or_path Asset handle or prefixed path.
 * @return string Path without the prefix or the original value.
 */
function remove_block_asset_path_prefix( $asset_handle_or_path ) {
	$path_prefix = 'file:';
	if ( 0 !== strpos( $asset_handle_or_path, $path_prefix ) ) {
		return $asset_handle_or_path;
	}
	return substr(
		$asset_handle_or_path,
		strlen( $path_prefix )
	);
}

/**
 * Generates the name for an asset based on the name of the block
 * and the field name provided.
 *
 * @since 5.5.0
 *
 * @param string $block_name Name of the block.
 * @param string $field_name Name of the metadata field.
 * @return string Generated asset name for the block's field.
 */
function generate_block_asset_handle( $block_name, $field_name ) {
	$field_mappings = array(
		'editorScript' => 'editor-script',
		'script'       => 'script',
		'editorStyle'  => 'editor-style',
		'style'        => 'style',
	);
	return str_replace( '/', '-', $block_name ) .
		'-' . $field_mappings[ $field_name ];
}

/**
 * Finds a script handle for the selected block metadata field. It detects
 * when a path to file was provided and finds a corresponding asset file
 * with details necessary to register the script under automatically
 * generated handle name. It returns unprocessed script handle otherwise.
 *
 * @since 5.5.0
 *
 * @param array  $metadata   Block metadata.
 * @param string $field_name Field name to pick from metadata.
 * @return string|bool Script handle provided directly or created through
 *                     script's registration, or false on failure.
 */
function register_block_script_handle( $metadata, $field_name ) {
	if ( empty( $metadata[ $field_name ] ) ) {
		return false;
	}
	$script_handle = $metadata[ $field_name ];
	$script_path   = remove_block_asset_path_prefix( $metadata[ $field_name ] );
	if ( $script_handle === $script_path ) {
		return $script_handle;
	}

	$script_handle     = generate_block_asset_handle( $metadata['name'], $field_name );
	$script_asset_path = realpath(
		dirname( $metadata['file'] ) . '/' .
		substr_replace( $script_path, '.asset.php', - strlen( '.js' ) )
	);
	if ( ! file_exists( $script_asset_path ) ) {
		$message = sprintf(
			/* translators: %1: field name. %2: block name */
			__( 'The asset file for the "%1$s" defined in "%2$s" block definition is missing.', 'default' ),
			$field_name,
			$metadata['name']
		);
		_doing_it_wrong( __FUNCTION__, $message, '5.5.0' );
		return false;
	}
	$script_asset = require $script_asset_path;
	$result       = wp_register_script(
		$script_handle,
		plugins_url( $script_path, $metadata['file'] ),
		$script_asset['dependencies'],
		$script_asset['version']
	);
	return $result ? $script_handle : false;
}

/**
 * Finds a style handle for the block metadata field. It detects when a path
 * to file was provided and registers the style under automatically
 * generated handle name. It returns unprocessed style handle otherwise.
 *
 * @since 5.5.0
 *
 * @param array  $metadata Block metadata.
 * @param string $field_name Field name to pick from metadata.
 * @return string|boolean Style handle provided directly or created through
 *                        style's registration, or false on failure.
 */
function register_block_style_handle( $metadata, $field_name ) {
	if ( empty( $metadata[ $field_name ] ) ) {
		return false;
	}
	$style_handle = $metadata[ $field_name ];
	$style_path   = remove_block_asset_path_prefix( $metadata[ $field_name ] );
	if ( $style_handle === $style_path ) {
		return $style_handle;
	}

	$style_handle = generate_block_asset_handle( $metadata['name'], $field_name );
	$block_dir    = dirname( $metadata['file'] );
	$result       = wp_register_style(
		$style_handle,
		plugins_url( $style_path, $metadata['file'] ),
		array(),
		filemtime( realpath( "$block_dir/$style_path" ) )
	);
	return $result ? $style_handle : false;
}

/**
 * Registers a block type from metadata stored in the `block.json` file.
 *
 * @since 5.5.0
 *
 * @param string $file_or_folder Path to the JSON file with metadata definition for
 *                               the block or path to the folder where the `block.json` file is located.
 * @param array  $args {
 *     Optional. Array of block type arguments. Accepts any public property of `WP_Block_Type`.
 *     Any arguments may be defined, however the ones described below are supported by default.
 *     Default empty array.
 *
 *     @type callable $render_callback Callback used to render blocks of this block type.
 * }
 * @return WP_Block_Type|false The registered block type on success, or false on failure.
 */
function register_block_type_from_metadata( $file_or_folder, $args = array() ) {
	$filename      = 'block.json';
	$metadata_file = ( substr( $file_or_folder, -strlen( $filename ) ) !== $filename ) ?
		trailingslashit( $file_or_folder ) . $filename :
		$file_or_folder;
	if ( ! file_exists( $metadata_file ) ) {
		return false;
	}

	$metadata = json_decode( file_get_contents( $metadata_file ), true );
	if ( ! is_array( $metadata ) || empty( $metadata['name'] ) ) {
		return false;
	}
	$metadata['file'] = $metadata_file;

	$settings          = array();
	$property_mappings = array(
		'title'           => 'title',
		'category'        => 'category',
		'parent'          => 'parent',
		'icon'            => 'icon',
		'description'     => 'description',
		'keywords'        => 'keywords',
		'attributes'      => 'attributes',
		'providesContext' => 'provides_context',
		'usesContext'     => 'uses_context',
		'supports'        => 'supports',
		'styles'          => 'styles',
		'example'         => 'example',
	);

	foreach ( $property_mappings as $key => $mapped_key ) {
		if ( isset( $metadata[ $key ] ) ) {
			$settings[ $mapped_key ] = $metadata[ $key ];
		}
	}

	if ( ! empty( $metadata['editorScript'] ) ) {
		$settings['editor_script'] = register_block_script_handle(
			$metadata,
			'editorScript'
		);
	}

	if ( ! empty( $metadata['script'] ) ) {
		$settings['script'] = register_block_script_handle(
			$metadata,
			'script'
		);
	}

	if ( ! empty( $metadata['editorStyle'] ) ) {
		$settings['editor_style'] = register_block_style_handle(
			$metadata,
			'editorStyle'
		);
	}

	if ( ! empty( $metadata['style'] ) ) {
		$settings['style'] = register_block_style_handle(
			$metadata,
			'style'
		);
	}

	return register_block_type(
		$metadata['name'],
		array_merge(
			$settings,
			$args
		)
	);
}

/**
 * Determine whether a post or content string has blocks.
 *
 * This test optimizes for performance rather than strict accuracy, detecting
 * the pattern of a block but not validating its structure. For strict accuracy,
 * you should use the block parser on post content.
 *
 * @since 5.0.0
 *
 * @see parse_blocks()
 *
 * @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object. Defaults to global $post.
 * @return bool Whether the post has blocks.
 */
function has_blocks( $post = null ) {
	if ( ! is_string( $post ) ) {
		$wp_post = get_post( $post );
		if ( $wp_post instanceof WP_Post ) {
			$post = $wp_post->post_content;
		}
	}

	return false !== strpos( (string) $post, '<!-- wp:' );
}

/**
 * Determine whether a $post or a string contains a specific block type.
 *
 * This test optimizes for performance rather than strict accuracy, detecting
 * the block type exists but not validating its structure. For strict accuracy,
 * you should use the block parser on post content.
 *
 * @since 5.0.0
 *
 * @see parse_blocks()
 *
 * @param string                  $block_name Full Block type to look for.
 * @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object. Defaults to global $post.
 * @return bool Whether the post content contains the specified block.
 */
function has_block( $block_name, $post = null ) {
	if ( ! has_blocks( $post ) ) {
		return false;
	}

	if ( ! is_string( $post ) ) {
		$wp_post = get_post( $post );
		if ( $wp_post instanceof WP_Post ) {
			$post = $wp_post->post_content;
		}
	}

	/*
	 * Normalize block name to include namespace, if provided as non-namespaced.
	 * This matches behavior for WordPress 5.0.0 - 5.3.0 in matching blocks by
	 * their serialized names.
	 */
	if ( false === strpos( $block_name, '/' ) ) {
		$block_name = 'core/' . $block_name;
	}

	// Test for existence of block by its fully qualified name.
	$has_block = false !== strpos( $post, '<!-- wp:' . $block_name . ' ' );

	if ( ! $has_block ) {
		/*
		 * If the given block name would serialize to a different name, test for
		 * existence by the serialized form.
		 */
		$serialized_block_name = strip_core_block_namespace( $block_name );
		if ( $serialized_block_name !== $block_name ) {
			$has_block = false !== strpos( $post, '<!-- wp:' . $serialized_block_name . ' ' );
		}
	}

	return $has_block;
}

/**
 * Returns an array of the names of all registered dynamic block types.
 *
 * @since 5.0.0
 *
 * @return string[] Array of dynamic block names.
 */
function get_dynamic_block_names() {
	$dynamic_block_names = array();

	$block_types = WP_Block_Type_Registry::get_instance()->get_all_registered();
	foreach ( $block_types as $block_type ) {
		if ( $block_type->is_dynamic() ) {
			$dynamic_block_names[] = $block_type->name;
		}
	}

	return $dynamic_block_names;
}

/**
 * Given an array of attributes, returns a string in the serialized attributes
 * format prepared for post content.
 *
 * The serialized result is a JSON-encoded string, with unicode escape sequence
 * substitution for characters which might otherwise interfere with embedding
 * the result in an HTML comment.
 *
 * @since 5.3.1
 *
 * @param array $block_attributes Attributes object.
 * @return string Serialized attributes.
 */
function serialize_block_attributes( $block_attributes ) {
	$encoded_attributes = json_encode( $block_attributes );
	$encoded_attributes = preg_replace( '/--/', '\\u002d\\u002d', $encoded_attributes );
	$encoded_attributes = preg_replace( '/</', '\\u003c', $encoded_attributes );
	$encoded_attributes = preg_replace( '/>/', '\\u003e', $encoded_attributes );
	$encoded_attributes = preg_replace( '/&/', '\\u0026', $encoded_attributes );
	// Regex: /\\"/
	$encoded_attributes = preg_replace( '/\\\\"/', '\\u0022', $encoded_attributes );

	return $encoded_attributes;
}

/**
 * Returns the block name to use for serialization. This will remove the default
 * "core/" namespace from a block name.
 *
 * @since 5.3.1
 *
 * @param string $block_name Original block name.
 * @return string Block name to use for serialization.
 */
function strip_core_block_namespace( $block_name = null ) {
	if ( is_string( $block_name ) && 0 === strpos( $block_name, 'core/' ) ) {
		return substr( $block_name, 5 );
	}

	return $block_name;
}

/**
 * Returns the content of a block, including comment delimiters.
 *
 * @since 5.3.1
 *
 * @param string $block_name       Block name.
 * @param array  $block_attributes Block attributes.
 * @param string $block_content    Block save content.
 * @return string Comment-delimited block content.
 */
function get_comment_delimited_block_content( $block_name = null, $block_attributes, $block_content ) {
	if ( is_null( $block_name ) ) {
		return $block_content;
	}

	$serialized_block_name = strip_core_block_namespace( $block_name );
	$serialized_attributes = empty( $block_attributes ) ? '' : serialize_block_attributes( $block_attributes ) . ' ';

	if ( empty( $block_content ) ) {
		return sprintf( '<!-- wp:%s %s/-->', $serialized_block_name, $serialized_attributes );
	}

	return sprintf(
		'<!-- wp:%s %s-->%s<!-- /wp:%s -->',
		$serialized_block_name,
		$serialized_attributes,
		$block_content,
		$serialized_block_name
	);
}

/**
 * Returns the content of a block, including comment delimiters, serializing all
 * attributes from the given parsed block.
 *
 * This should be used when preparing a block to be saved to post content.
 * Prefer `render_block` when preparing a block for display. Unlike
 * `render_block`, this does not evaluate a block's `render_callback`, and will
 * instead preserve the markup as parsed.
 *
 * @since 5.3.1
 *
 * @param WP_Block_Parser_Block $block A single parsed block object.
 * @return string String of rendered HTML.
 */
function serialize_block( $block ) {
	$block_content = '';

	$index = 0;
	foreach ( $block['innerContent'] as $chunk ) {
		$block_content .= is_string( $chunk ) ? $chunk : serialize_block( $block['innerBlocks'][ $index++ ] );
	}

	if ( ! is_array( $block['attrs'] ) ) {
		$block['attrs'] = array();
	}

	return get_comment_delimited_block_content(
		$block['blockName'],
		$block['attrs'],
		$block_content
	);
}

/**
 * Returns a joined string of the aggregate serialization of the given parsed
 * blocks.
 *
 * @since 5.3.1
 *
 * @param WP_Block_Parser_Block[] $blocks Parsed block objects.
 * @return string String of rendered HTML.
 */
function serialize_blocks( $blocks ) {
	return implode( '', array_map( 'serialize_block', $blocks ) );
}

/**
 * Filters and sanitizes block content to remove non-allowable HTML from
 * parsed block attribute values.
 *
 * @since 5.3.1
 *
 * @param string         $text              Text that may contain block content.
 * @param array[]|string $allowed_html      An array of allowed HTML elements
 *                                          and attributes, or a context name
 *                                          such as 'post'.
 * @param string[]       $allowed_protocols Array of allowed URL protocols.
 * @return string The filtered and sanitized content result.
 */
function filter_block_content( $text, $allowed_html = 'post', $allowed_protocols = array() ) {
	$result = '';

	if ( false !== strpos( $text, '<!--' ) && false !== strpos( $text, '--->' ) ) {
		$text = preg_replace_callback( '%<!--(.*?)--->%', '_filter_block_content_callback', $text );
	}

	$blocks = parse_blocks( $text );
	foreach ( $blocks as $block ) {
		$block   = filter_block_kses( $block, $allowed_html, $allowed_protocols );
		$result .= serialize_block( $block );
	}

	return $result;
}

/**
 * Callback used for regular expression replacement in filter_block_content().
 *
 * @private
 * @since 6.2.1
 *
 * @param array $matches Array of preg_replace_callback matches.
 * @return string Replacement string.
 */
function _filter_block_content_callback( $matches ) {
	return '<!--' . rtrim( $matches[1], '-' ) . '-->';
}

/**
 * Filters and sanitizes a parsed block to remove non-allowable HTML from block
 * attribute values.
 *
 * @since 5.3.1
 *
 * @param WP_Block_Parser_Block $block             The parsed block object.
 * @param array[]|string        $allowed_html      An array of allowed HTML
 *                                                 elements and attributes, or a
 *                                                 context name such as 'post'.
 * @param string[]              $allowed_protocols Allowed URL protocols.
 * @return array The filtered and sanitized block object result.
 */
function filter_block_kses( $block, $allowed_html, $allowed_protocols = array() ) {
	$block['attrs'] = filter_block_kses_value( $block['attrs'], $allowed_html, $allowed_protocols );

	if ( is_array( $block['innerBlocks'] ) ) {
		foreach ( $block['innerBlocks'] as $i => $inner_block ) {
			$block['innerBlocks'][ $i ] = filter_block_kses( $inner_block, $allowed_html, $allowed_protocols );
		}
	}

	return $block;
}

/**
 * Filters and sanitizes a parsed block attribute value to remove non-allowable
 * HTML.
 *
 * @since 5.3.1
 *
 * @param string[]|string $value             The attribute value to filter.
 * @param array[]|string  $allowed_html      An array of allowed HTML elements
 *                                           and attributes, or a context name
 *                                           such as 'post'.
 * @param string[]        $allowed_protocols Array of allowed URL protocols.
 * @return string[]|string The filtered and sanitized result.
 */
function filter_block_kses_value( $value, $allowed_html, $allowed_protocols = array() ) {
	if ( is_array( $value ) ) {
		foreach ( $value as $key => $inner_value ) {
			$filtered_key   = filter_block_kses_value( $key, $allowed_html, $allowed_protocols );
			$filtered_value = filter_block_kses_value( $inner_value, $allowed_html, $allowed_protocols );

			if ( $filtered_key !== $key ) {
				unset( $value[ $key ] );
			}

			$value[ $filtered_key ] = $filtered_value;
		}
	} elseif ( is_string( $value ) ) {
		return wp_kses( $value, $allowed_html, $allowed_protocols );
	}

	return $value;
}

/**
 * Parses blocks out of a content string, and renders those appropriate for the excerpt.
 *
 * As the excerpt should be a small string of text relevant to the full post content,
 * this function renders the blocks that are most likely to contain such text.
 *
 * @since 5.0.0
 *
 * @param string $content The content to parse.
 * @return string The parsed and filtered content.
 */
function excerpt_remove_blocks( $content ) {
	$allowed_inner_blocks = array(
		// Classic blocks have their blockName set to null.
		null,
		'core/freeform',
		'core/heading',
		'core/html',
		'core/list',
		'core/media-text',
		'core/paragraph',
		'core/preformatted',
		'core/pullquote',
		'core/quote',
		'core/table',
		'core/verse',
	);

	$allowed_blocks = array_merge( $allowed_inner_blocks, array( 'core/columns' ) );

	/**
	 * Filters the list of blocks that can contribute to the excerpt.
	 *
	 * If a dynamic block is added to this list, it must not generate another
	 * excerpt, as this will cause an infinite loop to occur.
	 *
	 * @since 5.0.0
	 *
	 * @param array $allowed_blocks The list of allowed blocks.
	 */
	$allowed_blocks = apply_filters( 'excerpt_allowed_blocks', $allowed_blocks );
	$blocks         = parse_blocks( $content );
	$output         = '';

	foreach ( $blocks as $block ) {
		if ( in_array( $block['blockName'], $allowed_blocks, true ) ) {
			if ( ! empty( $block['innerBlocks'] ) ) {
				if ( 'core/columns' === $block['blockName'] ) {
					$output .= _excerpt_render_inner_columns_blocks( $block, $allowed_inner_blocks );
					continue;
				}

				// Skip the block if it has disallowed or nested inner blocks.
				foreach ( $block['innerBlocks'] as $inner_block ) {
					if (
						! in_array( $inner_block['blockName'], $allowed_inner_blocks, true ) ||
						! empty( $inner_block['innerBlocks'] )
					) {
						continue 2;
					}
				}
			}

			$output .= render_block( $block );
		}
	}

	return $output;
}

/**
 * Render inner blocks from the `core/columns` block for generating an excerpt.
 *
 * @since 5.2.0
 * @access private
 *
 * @param array $columns        The parsed columns block.
 * @param array $allowed_blocks The list of allowed inner blocks.
 * @return string The rendered inner blocks.
 */
function _excerpt_render_inner_columns_blocks( $columns, $allowed_blocks ) {
	$output = '';

	foreach ( $columns['innerBlocks'] as $column ) {
		foreach ( $column['innerBlocks'] as $inner_block ) {
			if ( in_array( $inner_block['blockName'], $allowed_blocks, true ) && empty( $inner_block['innerBlocks'] ) ) {
				$output .= render_block( $inner_block );
			}
		}
	}

	return $output;
}

/**
 * Renders a single block into a HTML string.
 *
 * @since 5.0.0
 *
 * @global WP_Post  $post     The post to edit.
 * @global WP_Query $wp_query WordPress Query object.
 *
 * @param array $parsed_block A single parsed block object.
 * @return string String of rendered HTML.
 */
function render_block( $parsed_block ) {
	global $post, $wp_query;

	/**
	 * Allows render_block() to be short-circuited, by returning a non-null value.
	 *
	 * @since 5.1.0
	 *
	 * @param string|null $pre_render   The pre-rendered content. Default null.
	 * @param array       $parsed_block The block being rendered.
	 */
	$pre_render = apply_filters( 'pre_render_block', null, $parsed_block );
	if ( ! is_null( $pre_render ) ) {
		return $pre_render;
	}

	$source_block = $parsed_block;

	/**
	 * Filters the block being rendered in render_block(), before it's processed.
	 *
	 * @since 5.1.0
	 *
	 * @param array $parsed_block The block being rendered.
	 * @param array $source_block An un-modified copy of $parsed_block, as it appeared in the source content.
	 */
	$parsed_block = apply_filters( 'render_block_data', $parsed_block, $source_block );

	$context = array();

	if ( $post instanceof WP_Post ) {
		$context['postId'] = $post->ID;

		/*
		 * The `postType` context is largely unnecessary server-side, since the ID
		 * is usually sufficient on its own. That being said, since a block's
		 * manifest is expected to be shared between the server and the client,
		 * it should be included to consistently fulfill the expectation.
		 */
		$context['postType'] = $post->post_type;
	}

	if ( $wp_query instanceof WP_Query && isset( $wp_query->tax_query->queried_terms['category'] ) ) {
		$context['query'] = array( 'categoryIds' => array() );
		foreach ( $wp_query->tax_query->queried_terms['category']['terms'] as $category_slug_or_id ) {
			$context['query']['categoryIds'][] = 'slug' === $wp_query->tax_query->queried_terms['category']['field'] ? get_cat_ID( $category_slug_or_id ) : $category_slug_or_id;
		}
	}

	/**
	 * Filters the default context provided to a rendered block.
	 *
	 * @since 5.5.0
	 *
	 * @param array $context      Default context.
	 * @param array $parsed_block Block being rendered, filtered by `render_block_data`.
	 */
	$context = apply_filters( 'render_block_context', $context, $parsed_block );

	$block = new WP_Block( $parsed_block, $context );

	return $block->render();
}

/**
 * Parses blocks out of a content string.
 *
 * @since 5.0.0
 *
 * @param string $content Post content.
 * @return array[] Array of parsed block objects.
 */
function parse_blocks( $content ) {
	/**
	 * Filter to allow plugins to replace the server-side block parser
	 *
	 * @since 5.0.0
	 *
	 * @param string $parser_class Name of block parser class.
	 */
	$parser_class = apply_filters( 'block_parser_class', 'WP_Block_Parser' );

	$parser = new $parser_class();
	return $parser->parse( $content );
}

/**
 * Parses dynamic blocks out of `post_content` and re-renders them.
 *
 * @since 5.0.0
 *
 * @param string $content Post content.
 * @return string Updated post content.
 */
function do_blocks( $content ) {
	$blocks = parse_blocks( $content );
	$output = '';

	foreach ( $blocks as $block ) {
		$output .= render_block( $block );
	}

	// If there are blocks in this content, we shouldn't run wpautop() on it later.
	$priority = has_filter( 'the_content', 'wpautop' );
	if ( false !== $priority && doing_filter( 'the_content' ) && has_blocks( $content ) ) {
		remove_filter( 'the_content', 'wpautop', $priority );
		add_filter( 'the_content', '_restore_wpautop_hook', $priority + 1 );
	}

	return $output;
}

/**
 * If do_blocks() needs to remove wpautop() from the `the_content` filter, this re-adds it afterwards,
 * for subsequent `the_content` usage.
 *
 * @access private
 *
 * @since 5.0.0
 *
 * @param string $content The post content running through this filter.
 * @return string The unmodified content.
 */
function _restore_wpautop_hook( $content ) {
	$current_priority = has_filter( 'the_content', '_restore_wpautop_hook' );

	add_filter( 'the_content', 'wpautop', $current_priority - 1 );
	remove_filter( 'the_content', '_restore_wpautop_hook', $current_priority );

	return $content;
}

/**
 * Returns the current version of the block format that the content string is using.
 *
 * If the string doesn't contain blocks, it returns 0.
 *
 * @since 5.0.0
 *
 * @param string $content Content to test.
 * @return int The block format version is 1 if the content contains one or more blocks, 0 otherwise.
 */
function block_version( $content ) {
	return has_blocks( $content ) ? 1 : 0;
}

/**
 * Registers a new block style.
 *
 * @since 5.3.0
 *
 * @param string $block_name       Block type name including namespace.
 * @param array  $style_properties Array containing the properties of the style name,
 *                                 label, style (name of the stylesheet to be enqueued),
 *                                 inline_style (string containing the CSS to be added).
 * @return boolean True if the block style was registered with success and false otherwise.
 */
function register_block_style( $block_name, $style_properties ) {
	return WP_Block_Styles_Registry::get_instance()->register( $block_name, $style_properties );
}

/**
 * Unregisters a block style.
 *
 * @since 5.3.0
 *
 * @param string $block_name       Block type name including namespace.
 * @param array  $block_style_name Block style name.
 * @return boolean True if the block style was unregistered with success and false otherwise.
 */
function unregister_block_style( $block_name, $block_style_name ) {
	return WP_Block_Styles_Registry::get_instance()->unregister( $block_name, $block_style_name );
}
<?php
/**
 * Register the block patterns and block patterns categories
 *
 * @package WordPress
 * @since 5.5.0
 */

add_theme_support( 'core-block-patterns' );

/**
 * Registers the core block patterns and categories.
 *
 * @since 5.5.0
 * @private
 */
function _register_core_block_patterns_and_categories() {
	$should_register_core_patterns = get_theme_support( 'core-block-patterns' );

	if ( $should_register_core_patterns ) {
		$core_block_patterns = array(
			'text-two-columns',
			'two-buttons',
			'two-images',
			'text-two-columns-with-images',
			'text-three-columns-buttons',
			'large-header',
			'large-header-button',
			'three-buttons',
			'heading-paragraph',
			'quote',
		);

		foreach ( $core_block_patterns as $core_block_pattern ) {
			register_block_pattern(
				'core/' . $core_block_pattern,
				require __DIR__ . '/block-patterns/' . $core_block_pattern . '.php'
			);
		}
	}

	register_block_pattern_category( 'buttons', array( 'label' => _x( 'Buttons', 'Block pattern category' ) ) );
	register_block_pattern_category( 'columns', array( 'label' => _x( 'Columns', 'Block pattern category' ) ) );
	register_block_pattern_category( 'gallery', array( 'label' => _x( 'Gallery', 'Block pattern category' ) ) );
	register_block_pattern_category( 'header', array( 'label' => _x( 'Headers', 'Block pattern category' ) ) );
	register_block_pattern_category( 'text', array( 'label' => _x( 'Text', 'Block pattern category' ) ) );
}
<?php
/*
Plugin name: Contact Form CFDB7
Plugin URI: https://ciphercoin.com/
Description: Save and manage Contact Form 7 messages. Never lose important data. Contact Form CFDB7 plugin is an add-on for the Contact Form 7 plugin.
Author: Arshid
Author URI: http://ciphercoin.com/
Text Domain: contact-form-cfdb7
Domain Path: /languages/
Version: 1.2.5.3
*/

function cfdb7_create_table(){

    global $wpdb;
    $cfdb       = apply_filters( 'cfdb7_database', $wpdb );
    $table_name = $cfdb->prefix.'db7_forms';

    if( $cfdb->get_var("SHOW TABLES LIKE '$table_name'") != $table_name ) {

        $charset_collate = $cfdb->get_charset_collate();

        $sql = "CREATE TABLE $table_name (
            form_id bigint(20) NOT NULL AUTO_INCREMENT,
            form_post_id bigint(20) NOT NULL,
            form_value longtext NOT NULL,
            form_date datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
            PRIMARY KEY  (form_id)
        ) $charset_collate;";

        require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
        dbDelta( $sql );
    }

    $upload_dir    = wp_upload_dir();
    $cfdb7_dirname = $upload_dir['basedir'].'/cfdb7_uploads';
    if ( ! file_exists( $cfdb7_dirname ) ) {
        wp_mkdir_p( $cfdb7_dirname );
        $fp = fopen( $cfdb7_dirname.'/index.php', 'w');
        fwrite($fp, "<?php \n\t // Silence is golden.");
        fclose( $fp );
    }
    add_option( 'cfdb7_view_install_date', date('Y-m-d G:i:s'), '', 'yes');

}

function cfdb7_on_activate( $network_wide ){

    global $wpdb;
    if ( is_multisite() && $network_wide ) {
        // Get all blogs in the network and activate plugin on each one
        $blog_ids = $wpdb->get_col( "SELECT blog_id FROM $wpdb->blogs" );
        foreach ( $blog_ids as $blog_id ) {
            switch_to_blog( $blog_id );
            cfdb7_create_table();
            restore_current_blog();
        }
    } else {
        cfdb7_create_table();
    }

	// Add custom capability
	$role = get_role( 'administrator' );
	$role->add_cap( 'cfdb7_access' );
}

register_activation_hook( __FILE__, 'cfdb7_on_activate' );


function cfdb7_upgrade_function( $upgrader_object, $options ) {

    $upload_dir    = wp_upload_dir();
    $cfdb7_dirname = $upload_dir['basedir'].'/cfdb7_uploads';

    if ( file_exists( $cfdb7_dirname.'/index.php' ) ) return;
        
    if ( file_exists( $cfdb7_dirname ) ) {
        $fp = fopen( $cfdb7_dirname.'/index.php', 'w');
        fwrite($fp, "<?php \n\t // Silence is golden.");
        fclose( $fp );
    }

}

add_action( 'upgrader_process_complete', 'cfdb7_upgrade_function',10, 2);



function cfdb7_on_deactivate() {

	// Remove custom capability from all roles
	global $wp_roles;

	foreach( array_keys( $wp_roles->roles ) as $role ) {
		$wp_roles->remove_cap( $role, 'cfdb7_access' );
	}
}

register_deactivation_hook( __FILE__, 'cfdb7_on_deactivate' );


function cfdb7_before_send_mail( $form_tag ) {

    global $wpdb;
    $cfdb          = apply_filters( 'cfdb7_database', $wpdb );
    $table_name    = $cfdb->prefix.'db7_forms';
    $upload_dir    = wp_upload_dir();
    $cfdb7_dirname = $upload_dir['basedir'].'/cfdb7_uploads';
    $time_now      = time();

    $form = WPCF7_Submission::get_instance();

    if ( $form ) {

        $black_list   = array('_wpcf7', '_wpcf7_version', '_wpcf7_locale', '_wpcf7_unit_tag',
        '_wpcf7_is_ajax_call','cfdb7_name', '_wpcf7_container_post','_wpcf7cf_hidden_group_fields',
        '_wpcf7cf_hidden_groups', '_wpcf7cf_visible_groups', '_wpcf7cf_options','g-recaptcha-response');

        $data           = $form->get_posted_data();
        $files          = $form->uploaded_files();
        $uploaded_files = array();

        $rm_underscore  = apply_filters('cfdb7_remove_underscore_data', true); 

        foreach ($_FILES as $file_key => $file) {
            array_push($uploaded_files, $file_key);
        }

        foreach ($files as $file_key => $file) {
            copy($file, $cfdb7_dirname.'/'.$time_now.'-'.$file_key.'-'.basename($file));
        }

        $form_data   = array();

        $form_data['cfdb7_status'] = 'unread';
        foreach ($data as $key => $d) {
            
            $matches = array();
            if( $rm_underscore ) preg_match('/^_.*$/m', $key, $matches);

            if ( !in_array($key, $black_list ) && !in_array($key, $uploaded_files ) && empty( $matches[0] ) ) {

                $tmpD = $d;

                if ( ! is_array($d) ){

                    $bl   = array('\"',"\'",'/','\\','"',"'");
                    $wl   = array('"',''','/', '\','"',''');

                    $tmpD = str_replace($bl, $wl, $tmpD );
                }

                $form_data[$key] = $tmpD;
            }
            if ( in_array($key, $uploaded_files ) ) {
                $file_name = isset( $files[ $key ] ) ? $time_now.'-'.$key.'-'.basename( $files[ $key ])  : ''; 
                $form_data[$key.'cfdb7_file'] = $file_name;
            }
        }

        /* cfdb7 before save data. */
        $form_data = apply_filters('cfdb7_before_save_data', $form_data);

        do_action( 'cfdb7_before_save', $form_data );

        $form_post_id = $form_tag->id();
        $form_value   = serialize( $form_data );
        $form_date    = current_time('Y-m-d H:i:s');

        $cfdb->insert( $table_name, array(
            'form_post_id' => $form_post_id,
            'form_value'   => $form_value,
            'form_date'    => $form_date
        ) );

        /* cfdb7 after save data */
        $insert_id = $cfdb->insert_id;
        do_action( 'cfdb7_after_save_data', $insert_id );
    }

}

add_action( 'wpcf7_before_send_mail', 'cfdb7_before_send_mail' );


add_action( 'init', 'cfdb7_init');

/**
 * CFDB7 cfdb7_init and cfdb7_admin_init
 * Admin setting
 */
function cfdb7_init(){

    do_action( 'cfdb7_init' );

    if( is_admin() ){

        require_once 'inc/admin-mainpage.php';
        require_once 'inc/admin-subpage.php';
        require_once 'inc/admin-form-details.php';
        require_once 'inc/export-csv.php';

        do_action( 'cfdb7_admin_init' );

        $csv = new Export_CSV();
        if( isset($_REQUEST['csv']) && ( $_REQUEST['csv'] == true ) && isset( $_REQUEST['nonce'] ) ) {

            $nonce  = filter_input( INPUT_GET, 'nonce', FILTER_SANITIZE_STRING );

            if ( ! wp_verify_nonce( $nonce, 'dnonce' ) ) wp_die('Invalid nonce..!!');

            $csv->download_csv_file();
        }
        new Cfdb7_Wp_Main_Page();
    }
}


add_action( 'admin_notices', 'cfdb7_admin_notice' );
add_action('admin_init', 'cfdb7_view_ignore_notice' );

function cfdb7_admin_notice() {

    $install_date = get_option( 'cfdb7_view_install_date', '');
    $install_date = date_create( $install_date );
    $date_now     = date_create( date('Y-m-d G:i:s') );
    $date_diff    = date_diff( $install_date, $date_now );

    if ( $date_diff->format("%d") < 7 ) {

        return false;
    }

    if ( ! get_option( 'cfdb7_view_ignore_notice' ) ) {

        echo '<div class="updated"><p>';

        printf(__( 'Awesome, you\'ve been using <a href="admin.php?page=cfdb7-list.php">Contact Form CFDB7</a> for more than 1 week. May we ask you to give it a 5-star rating on WordPress? | <a href="%2$s" target="_blank">Ok, you deserved it</a> | <a href="%1$s">I already did</a> | <a href="%1$s">No, not good enough</a>', 'contact-form-cfdb7' ), '?cfdb7-ignore-notice=0',
        'https://wordpress.org/plugins/contact-form-cfdb7/');
        echo "</p></div>";
    }
}

function cfdb7_view_ignore_notice() {

    if ( isset($_GET['cfdb7-ignore-notice']) && '0' == $_GET['cfdb7-ignore-notice'] ) {

        update_option( 'cfdb7_view_ignore_notice', 'true' );
    }
}

/**
 * Plugin settings link
 * @param  array $links list of links
 * @return array of links
 */
function cfdb7_settings_link( $links ) {
    $forms_link = '<a href="admin.php?page=cfdb7-list.php">Contact Forms</a>';
    array_unshift($links, $forms_link);
    return $links;
}

$plugin = plugin_basename(__FILE__);
add_filter("plugin_action_links_$plugin", 'cfdb7_settings_link' );


/**
 * Load language files to enable plugin translation
 *
 * @since 1.2.4.1
 */
function cfdb7_load_textdomain() {
	load_plugin_textdomain( 'contact-form-cfdb7', false, basename( dirname( __FILE__ ) ) . '/languages' );
}
add_action( 'plugins_loaded', 'cfdb7_load_textdomain' );