/**
 * Core Translation API
 *
 * @package WordPress
 * @subpackage i18n
 * @since 1.2.0
 */

/**
 * Retrieves the current locale.
 *
 * If the locale is set, then it will filter the locale in the {@see 'locale'}
 * filter hook and return the value.
 *
 * If the locale is not set already, then the WPLANG constant is used if it is
 * defined. Then it is filtered through the {@see 'locale'} filter hook and
 * the value for the locale global set and the locale is returned.
 *
 * The process to get the locale should only be done once, but the locale will
 * always be filtered using the {@see 'locale'} hook.
 *
 * @since 1.5.0
 *
 * @global string $locale           The current locale.
 * @global string $wp_local_package Locale code of the package.
 *
 * @return string The locale of the blog or from the {@see 'locale'} hook.
 */
function get_locale() {
	global $locale, $wp_local_package;

	if ( isset( $locale ) ) {
		/** This filter is documented in wp-includes/l10n.php */
		return apply_filters( 'locale', $locale );
	}

	if ( isset( $wp_local_package ) ) {
		$locale = $wp_local_package;
	}

	// WPLANG was defined in wp-config.
	if ( defined( 'WPLANG' ) ) {
		$locale = WPLANG;
	}

	// If multisite, check options.
	if ( is_multisite() ) {
		// Don't check blog option when installing.
		if ( wp_installing() ) {
			$ms_locale = get_site_option( 'WPLANG' );
		} else {
			$ms_locale = get_option( 'WPLANG' );
			if ( false === $ms_locale ) {
				$ms_locale = get_site_option( 'WPLANG' );
			}
		}

		if ( false !== $ms_locale ) {
			$locale = $ms_locale;
		}
	} else {
		$db_locale = get_option( 'WPLANG' );
		if ( false !== $db_locale ) {
			$locale = $db_locale;
		}
	}

	if ( empty( $locale ) ) {
		$locale = 'en_US';
	}

	/**
	 * Filters the locale ID of the WordPress installation.
	 *
	 * @since 1.5.0
	 *
	 * @param string $locale The locale ID.
	 */
	return apply_filters( 'locale', $locale );
}

/**
 * Retrieves the locale of a user.
 *
 * If the user has a locale set to a non-empty string then it will be
 * returned. Otherwise it returns the locale of get_locale().
 *
 * @since 4.7.0
 *
 * @param int|WP_User $user User's ID or a WP_User object. Defaults to current user.
 * @return string The locale of the user.
 */
function get_user_locale( $user = 0 ) {
	$user_object = false;

	if ( 0 === $user && function_exists( 'wp_get_current_user' ) ) {
		$user_object = wp_get_current_user();
	} elseif ( $user instanceof WP_User ) {
		$user_object = $user;
	} elseif ( $user && is_numeric( $user ) ) {
		$user_object = get_user_by( 'id', $user );
	}

	if ( ! $user_object ) {
		return get_locale();
	}

	$locale = $user_object->locale;

	return $locale ? $locale : get_locale();
}

/**
 * Determines the current locale desired for the request.
 *
 * @since 5.0.0
 *
 * @global string $pagenow The filename of the current screen.
 *
 * @return string The determined locale.
 */
function determine_locale() {
	/**
	 * Filters the locale for the current request prior to the default determination process.
	 *
	 * Using this filter allows to override the default logic, effectively short-circuiting the function.
	 *
	 * @since 5.0.0
	 *
	 * @param string|null $locale The locale to return and short-circuit. Default null.
	 */
	$determined_locale = apply_filters( 'pre_determine_locale', null );

	if ( $determined_locale && is_string( $determined_locale ) ) {
		return $determined_locale;
	}

	if (
		isset( $GLOBALS['pagenow'] ) && 'wp-login.php' === $GLOBALS['pagenow'] &&
		( ! empty( $_GET['wp_lang'] ) || ! empty( $_COOKIE['wp_lang'] ) )
	) {
		if ( ! empty( $_GET['wp_lang'] ) ) {
			$determined_locale = sanitize_locale_name( $_GET['wp_lang'] );
		} else {
			$determined_locale = sanitize_locale_name( $_COOKIE['wp_lang'] );
		}
	} elseif (
		is_admin() ||
		( isset( $_GET['_locale'] ) && 'user' === $_GET['_locale'] && wp_is_json_request() )
	) {
		$determined_locale = get_user_locale();
	} elseif (
		( ! empty( $_REQUEST['language'] ) || isset( $GLOBALS['wp_local_package'] ) )
		&& wp_installing()
	) {
		if ( ! empty( $_REQUEST['language'] ) ) {
			$determined_locale = sanitize_locale_name( $_REQUEST['language'] );
		} else {
			$determined_locale = $GLOBALS['wp_local_package'];
		}
	}

	if ( ! $determined_locale ) {
		$determined_locale = get_locale();
	}

	/**
	 * Filters the locale for the current request.
	 *
	 * @since 5.0.0
	 *
	 * @param string $determined_locale The locale.
	 */
	return apply_filters( 'determine_locale', $determined_locale );
}

/**
 * Retrieves the translation of $text.
 *
 * If there is no translation, or the text domain isn't loaded, the original text is returned.
 *
 * *Note:* Don't use translate() directly, use __() or related functions.
 *
 * @since 2.2.0
 * @since 5.5.0 Introduced `gettext-{$domain}` filter.
 *
 * @param string $text   Text to translate.
 * @param string $domain Optional. Text domain. Unique identifier for retrieving translated strings.
 *                       Default 'default'.
 * @return string Translated text.
 */
function translate( $text, $domain = 'default' ) {
	$translations = get_translations_for_domain( $domain );
	$translation  = $translations->translate( $text );

	/**
	 * Filters text with its translation.
	 *
	 * @since 2.0.11
	 *
	 * @param string $translation Translated text.
	 * @param string $text        Text to translate.
	 * @param string $domain      Text domain. Unique identifier for retrieving translated strings.
	 */
	$translation = apply_filters( 'gettext', $translation, $text, $domain );

	/**
	 * Filters text with its translation for a domain.
	 *
	 * The dynamic portion of the hook name, `$domain`, refers to the text domain.
	 *
	 * @since 5.5.0
	 *
	 * @param string $translation Translated text.
	 * @param string $text        Text to translate.
	 * @param string $domain      Text domain. Unique identifier for retrieving translated strings.
	 */
	$translation = apply_filters( "gettext_{$domain}", $translation, $text, $domain );

	return $translation;
}

/**
 * Removes last item on a pipe-delimited string.
 *
 * Meant for removing the last item in a string, such as 'Role name|User role'. The original
 * string will be returned if no pipe '|' characters are found in the string.
 *
 * @since 2.8.0
 *
 * @param string $text A pipe-delimited string.
 * @return string Either $text or everything before the last pipe.
 */
function before_last_bar( $text ) {
	$last_bar = strrpos( $text, '|' );
	if ( false === $last_bar ) {
		return $text;
	} else {
		return substr( $text, 0, $last_bar );
	}
}

/**
 * Retrieves the translation of $text in the context defined in $context.
 *
 * If there is no translation, or the text domain isn't loaded, the original text is returned.
 *
 * *Note:* Don't use translate_with_gettext_context() directly, use _x() or related functions.
 *
 * @since 2.8.0
 * @since 5.5.0 Introduced `gettext_with_context-{$domain}` filter.
 *
 * @param string $text    Text to translate.
 * @param string $context Context information for the translators.
 * @param string $domain  Optional. Text domain. Unique identifier for retrieving translated strings.
 *                        Default 'default'.
 * @return string Translated text on success, original text on failure.
 */
function translate_with_gettext_context( $text, $context, $domain = 'default' ) {
	$translations = get_translations_for_domain( $domain );
	$translation  = $translations->translate( $text, $context );

	/**
	 * Filters text with its translation based on context information.
	 *
	 * @since 2.8.0
	 *
	 * @param string $translation Translated text.
	 * @param string $text        Text to translate.
	 * @param string $context     Context information for the translators.
	 * @param string $domain      Text domain. Unique identifier for retrieving translated strings.
	 */
	$translation = apply_filters( 'gettext_with_context', $translation, $text, $context, $domain );

	/**
	 * Filters text with its translation based on context information for a domain.
	 *
	 * The dynamic portion of the hook name, `$domain`, refers to the text domain.
	 *
	 * @since 5.5.0
	 *
	 * @param string $translation Translated text.
	 * @param string $text        Text to translate.
	 * @param string $context     Context information for the translators.
	 * @param string $domain      Text domain. Unique identifier for retrieving translated strings.
	 */
	$translation = apply_filters( "gettext_with_context_{$domain}", $translation, $text, $context, $domain );

	return $translation;
}

/**
 * Retrieves the translation of $text.
 *
 * If there is no translation, or the text domain isn't loaded, the original text is returned.
 *
 * @since 2.1.0
 *
 * @param string $text   Text to translate.
 * @param string $domain Optional. Text domain. Unique identifier for retrieving translated strings.
 *                       Default 'default'.
 * @return string Translated text.
 */
function __( $text, $domain = 'default' ) {
	return translate( $text, $domain );
}

/**
 * Retrieves the translation of $text and escapes it for safe use in an attribute.
 *
 * If there is no translation, or the text domain isn't loaded, the original text is returned.
 *
 * @since 2.8.0
 *
 * @param string $text   Text to translate.
 * @param string $domain Optional. Text domain. Unique identifier for retrieving translated strings.
 *                       Default 'default'.
 * @return string Translated text on success, original text on failure.
 */
function esc_attr__( $text, $domain = 'default' ) {
	return esc_attr( translate( $text, $domain ) );
}

/**
 * Retrieves the translation of $text and escapes it for safe use in HTML output.
 *
 * If there is no translation, or the text domain isn't loaded, the original text
 * is escaped and returned.
 *
 * @since 2.8.0
 *
 * @param string $text   Text to translate.
 * @param string $domain Optional. Text domain. Unique identifier for retrieving translated strings.
 *                       Default 'default'.
 * @return string Translated text.
 */
function esc_html__( $text, $domain = 'default' ) {
	return esc_html( translate( $text, $domain ) );
}

/**
 * Displays translated text.
 *
 * @since 1.2.0
 *
 * @param string $text   Text to translate.
 * @param string $domain Optional. Text domain. Unique identifier for retrieving translated strings.
 *                       Default 'default'.
 */
function _e( $text, $domain = 'default' ) {
	echo translate( $text, $domain );
}

/**
 * Displays translated text that has been escaped for safe use in an attribute.
 *
 * Encodes `< > & " '` (less than, greater than, ampersand, double quote, single quote).
 * Will never double encode entities.
 *
 * If you need the value for use in PHP, use esc_attr__().
 *
 * @since 2.8.0
 *
 * @param string $text   Text to translate.
 * @param string $domain Optional. Text domain. Unique identifier for retrieving translated strings.
 *                       Default 'default'.
 */
function esc_attr_e( $text, $domain = 'default' ) {
	echo esc_attr( translate( $text, $domain ) );
}

/**
 * Displays translated text that has been escaped for safe use in HTML output.
 *
 * If there is no translation, or the text domain isn't loaded, the original text
 * is escaped and displayed.
 *
 * If you need the value for use in PHP, use esc_html__().
 *
 * @since 2.8.0
 *
 * @param string $text   Text to translate.
 * @param string $domain Optional. Text domain. Unique identifier for retrieving translated strings.
 *                       Default 'default'.
 */
function esc_html_e( $text, $domain = 'default' ) {
	echo esc_html( translate( $text, $domain ) );
}

/**
 * Retrieves translated string with gettext context.
 *
 * Quite a few times, there will be collisions with similar translatable text
 * found in more than two places, but with different translated context.
 *
 * By including the context in the pot file, translators can translate the two
 * strings differently.
 *
 * @since 2.8.0
 *
 * @param string $text    Text to translate.
 * @param string $context Context information for the translators.
 * @param string $domain  Optional. Text domain. Unique identifier for retrieving translated strings.
 *                        Default 'default'.
 * @return string Translated context string without pipe.
 */
function _x( $text, $context, $domain = 'default' ) {
	return translate_with_gettext_context( $text, $context, $domain );
}

/**
 * Displays translated string with gettext context.
 *
 * @since 3.0.0
 *
 * @param string $text    Text to translate.
 * @param string $context Context information for the translators.
 * @param string $domain  Optional. Text domain. Unique identifier for retrieving translated strings.
 *                        Default 'default'.
 */
function _ex( $text, $context, $domain = 'default' ) {
	echo _x( $text, $context, $domain );
}

/**
 * Translates string with gettext context, and escapes it for safe use in an attribute.
 *
 * If there is no translation, or the text domain isn't loaded, the original text
 * is escaped and returned.
 *
 * @since 2.8.0
 *
 * @param string $text    Text to translate.
 * @param string $context Context information for the translators.
 * @param string $domain  Optional. Text domain. Unique identifier for retrieving translated strings.
 *                        Default 'default'.
 * @return string Translated text.
 */
function esc_attr_x( $text, $context, $domain = 'default' ) {
	return esc_attr( translate_with_gettext_context( $text, $context, $domain ) );
}

/**
 * Translates string with gettext context, and escapes it for safe use in HTML output.
 *
 * If there is no translation, or the text domain isn't loaded, the original text
 * is escaped and returned.
 *
 * @since 2.9.0
 *
 * @param string $text    Text to translate.
 * @param string $context Context information for the translators.
 * @param string $domain  Optional. Text domain. Unique identifier for retrieving translated strings.
 *                        Default 'default'.
 * @return string Translated text.
 */
function esc_html_x( $text, $context, $domain = 'default' ) {
	return esc_html( translate_with_gettext_context( $text, $context, $domain ) );
}

/**
 * Translates and retrieves the singular or plural form based on the supplied number.
 *
 * Used when you want to use the appropriate form of a string based on whether a
 * number is singular or plural.
 *
 * Example:
 *
 *     printf( _n( '%s person', '%s people', $count, 'text-domain' ), number_format_i18n( $count ) );
 *
 * @since 2.8.0
 * @since 5.5.0 Introduced `ngettext-{$domain}` filter.
 *
 * @param string $single The text to be used if the number is singular.
 * @param string $plural The text to be used if the number is plural.
 * @param int    $number The number to compare against to use either the singular or plural form.
 * @param string $domain Optional. Text domain. Unique identifier for retrieving translated strings.
 *                       Default 'default'.
 * @return string The translated singular or plural form.
 */
function _n( $single, $plural, $number, $domain = 'default' ) {
	$translations = get_translations_for_domain( $domain );
	$translation  = $translations->translate_plural( $single, $plural, $number );

	/**
	 * Filters the singular or plural form of a string.
	 *
	 * @since 2.2.0
	 *
	 * @param string $translation Translated text.
	 * @param string $single      The text to be used if the number is singular.
	 * @param string $plural      The text to be used if the number is plural.
	 * @param int    $number      The number to compare against to use either the singular or plural form.
	 * @param string $domain      Text domain. Unique identifier for retrieving translated strings.
	 */
	$translation = apply_filters( 'ngettext', $translation, $single, $plural, $number, $domain );

	/**
	 * Filters the singular or plural form of a string for a domain.
	 *
	 * The dynamic portion of the hook name, `$domain`, refers to the text domain.
	 *
	 * @since 5.5.0
	 *
	 * @param string $translation Translated text.
	 * @param string $single      The text to be used if the number is singular.
	 * @param string $plural      The text to be used if the number is plural.
	 * @param int    $number      The number to compare against to use either the singular or plural form.
	 * @param string $domain      Text domain. Unique identifier for retrieving translated strings.
	 */
	$translation = apply_filters( "ngettext_{$domain}", $translation, $single, $plural, $number, $domain );

	return $translation;
}

/**
 * Translates and retrieves the singular or plural form based on the supplied number, with gettext context.
 *
 * This is a hybrid of _n() and _x(). It supports context and plurals.
 *
 * Used when you want to use the appropriate form of a string with context based on whether a
 * number is singular or plural.
 *
 * Example of a generic phrase which is disambiguated via the context parameter:
 *
 *     printf( _nx( '%s group', '%s groups', $people, 'group of people', 'text-domain' ), number_format_i18n( $people ) );
 *     printf( _nx( '%s group', '%s groups', $animals, 'group of animals', 'text-domain' ), number_format_i18n( $animals ) );
 *
 * @since 2.8.0
 * @since 5.5.0 Introduced `ngettext_with_context-{$domain}` filter.
 *
 * @param string $single  The text to be used if the number is singular.
 * @param string $plural  The text to be used if the number is plural.
 * @param int    $number  The number to compare against to use either the singular or plural form.
 * @param string $context Context information for the translators.
 * @param string $domain  Optional. Text domain. Unique identifier for retrieving translated strings.
 *                        Default 'default'.
 * @return string The translated singular or plural form.
 */
function _nx( $single, $plural, $number, $context, $domain = 'default' ) {
	$translations = get_translations_for_domain( $domain );
	$translation  = $translations->translate_plural( $single, $plural, $number, $context );

	/**
	 * Filters the singular or plural form of a string with gettext context.
	 *
	 * @since 2.8.0
	 *
	 * @param string $translation Translated text.
	 * @param string $single      The text to be used if the number is singular.
	 * @param string $plural      The text to be used if the number is plural.
	 * @param int    $number      The number to compare against to use either the singular or plural form.
	 * @param string $context     Context information for the translators.
	 * @param string $domain      Text domain. Unique identifier for retrieving translated strings.
	 */
	$translation = apply_filters( 'ngettext_with_context', $translation, $single, $plural, $number, $context, $domain );

	/**
	 * Filters the singular or plural form of a string with gettext context for a domain.
	 *
	 * The dynamic portion of the hook name, `$domain`, refers to the text domain.
	 *
	 * @since 5.5.0
	 *
	 * @param string $translation Translated text.
	 * @param string $single      The text to be used if the number is singular.
	 * @param string $plural      The text to be used if the number is plural.
	 * @param int    $number      The number to compare against to use either the singular or plural form.
	 * @param string $context     Context information for the translators.
	 * @param string $domain      Text domain. Unique identifier for retrieving translated strings.
	 */
	$translation = apply_filters( "ngettext_with_context_{$domain}", $translation, $single, $plural, $number, $context, $domain );

	return $translation;
}

/**
 * Registers plural strings in POT file, but does not translate them.
 *
 * Used when you want to keep structures with translatable plural
 * strings and use them later when the number is known.
 *
 * Example:
 *
 *     $message = _n_noop( '%s post', '%s posts', 'text-domain' );
 *     ...
 *     printf( translate_nooped_plural( $message, $count, 'text-domain' ), number_format_i18n( $count ) );
 *
 * @since 2.5.0
 *
 * @param string $singular Singular form to be localized.
 * @param string $plural   Plural form to be localized.
 * @param string $domain   Optional. Text domain. Unique identifier for retrieving translated strings.
 *                         Default null.
 * @return array {
 *     Array of translation information for the strings.
 *
 *     @type string      $0        Singular form to be localized. No longer used.
 *     @type string      $1        Plural form to be localized. No longer used.
 *     @type string      $singular Singular form to be localized.
 *     @type string      $plural   Plural form to be localized.
 *     @type null        $context  Context information for the translators.
 *     @type string|null $domain   Text domain.
 * }
 */
function _n_noop( $singular, $plural, $domain = null ) {
	return array(
		0          => $singular,
		1          => $plural,
		'singular' => $singular,
		'plural'   => $plural,
		'context'  => null,
		'domain'   => $domain,
	);
}

/**
 * Registers plural strings with gettext context in POT file, but does not translate them.
 *
 * Used when you want to keep structures with translatable plural
 * strings and use them later when the number is known.
 *
 * Example of a generic phrase which is disambiguated via the context parameter:
 *
 *     $messages = array(
 *          'people'  => _nx_noop( '%s group', '%s groups', 'people', 'text-domain' ),
 *          'animals' => _nx_noop( '%s group', '%s groups', 'animals', 'text-domain' ),
 *     );
 *     ...
 *     $message = $messages[ $type ];
 *     printf( translate_nooped_plural( $message, $count, 'text-domain' ), number_format_i18n( $count ) );
 *
 * @since 2.8.0
 *
 * @param string $singular Singular form to be localized.
 * @param string $plural   Plural form to be localized.
 * @param string $context  Context information for the translators.
 * @param string $domain   Optional. Text domain. Unique identifier for retrieving translated strings.
 *                         Default null.
 * @return array {
 *     Array of translation information for the strings.
 *
 *     @type string      $0        Singular form to be localized. No longer used.
 *     @type string      $1        Plural form to be localized. No longer used.
 *     @type string      $2        Context information for the translators. No longer used.
 *     @type string      $singular Singular form to be localized.
 *     @type string      $plural   Plural form to be localized.
 *     @type string      $context  Context information for the translators.
 *     @type string|null $domain   Text domain.
 * }
 */
function _nx_noop( $singular, $plural, $context, $domain = null ) {
	return array(
		0          => $singular,
		1          => $plural,
		2          => $context,
		'singular' => $singular,
		'plural'   => $plural,
		'context'  => $context,
		'domain'   => $domain,
	);
}

/**
 * Translates and returns the singular or plural form of a string that's been registered
 * with _n_noop() or _nx_noop().
 *
 * Used when you want to use a translatable plural string once the number is known.
 *
 * Example:
 *
 *     $message = _n_noop( '%s post', '%s posts', 'text-domain' );
 *     ...
 *     printf( translate_nooped_plural( $message, $count, 'text-domain' ), number_format_i18n( $count ) );
 *
 * @since 3.1.0
 *
 * @param array  $nooped_plural {
 *     Array that is usually a return value from _n_noop() or _nx_noop().
 *
 *     @type string      $singular Singular form to be localized.
 *     @type string      $plural   Plural form to be localized.
 *     @type string|null $context  Context information for the translators.
 *     @type string|null $domain   Text domain.
 * }
 * @param int    $count         Number of objects.
 * @param string $domain        Optional. Text domain. Unique identifier for retrieving translated strings. If $nooped_plural contains
 *                              a text domain passed to _n_noop() or _nx_noop(), it will override this value. Default 'default'.
 * @return string Either $singular or $plural translated text.
 */
function translate_nooped_plural( $nooped_plural, $count, $domain = 'default' ) {
	if ( $nooped_plural['domain'] ) {
		$domain = $nooped_plural['domain'];
	}

	if ( $nooped_plural['context'] ) {
		return _nx( $nooped_plural['singular'], $nooped_plural['plural'], $count, $nooped_plural['context'], $domain );
	} else {
		return _n( $nooped_plural['singular'], $nooped_plural['plural'], $count, $domain );
	}
}

/**
 * Loads a .mo file into the text domain $domain.
 *
 * If the text domain already exists, the translations will be merged. If both
 * sets have the same string, the translation from the original value will be taken.
 *
 * On success, the .mo file will be placed in the $l10n global by $domain
 * and will be a MO object.
 *
 * @since 1.5.0
 * @since 6.1.0 Added the `$locale` parameter.
 *
 * @global MO[]                   $l10n                   An array of all currently loaded text domains.
 * @global MO[]                   $l10n_unloaded          An array of all text domains that have been unloaded again.
 * @global WP_Textdomain_Registry $wp_textdomain_registry WordPress Textdomain Registry.
 *
 * @param string $domain Text domain. Unique identifier for retrieving translated strings.
 * @param string $mofile Path to the .mo file.
 * @param string $locale Optional. Locale. Default is the current locale.
 * @return bool True on success, false on failure.
 */
function load_textdomain( $domain, $mofile, $locale = null ) {
	/** @var WP_Textdomain_Registry $wp_textdomain_registry */
	global $l10n, $l10n_unloaded, $wp_textdomain_registry;

	$l10n_unloaded = (array) $l10n_unloaded;

	if ( ! is_string( $domain ) ) {
		return false;
	}

	/**
	 * Filters whether to short-circuit loading .mo file.
	 *
	 * Returning a non-null value from the filter will effectively short-circuit
	 * the loading, returning the passed value instead.
	 *
	 * @since 6.3.0
	 *
	 * @param bool|null   $loaded The result of loading a .mo file. Default null.
	 * @param string      $domain Text domain. Unique identifier for retrieving translated strings.
	 * @param string      $mofile Path to the MO file.
	 * @param string|null $locale Locale.
	 */
	$loaded = apply_filters( 'pre_load_textdomain', null, $domain, $mofile, $locale );
	if ( null !== $loaded ) {
		if ( true === $loaded ) {
			unset( $l10n_unloaded[ $domain ] );
		}

		return $loaded;
	}

	/**
	 * Filters whether to override the .mo file loading.
	 *
	 * @since 2.9.0
	 * @since 6.2.0 Added the `$locale` parameter.
	 *
	 * @param bool        $override Whether to override the .mo file loading. Default false.
	 * @param string      $domain   Text domain. Unique identifier for retrieving translated strings.
	 * @param string      $mofile   Path to the MO file.
	 * @param string|null $locale   Locale.
	 */
	$plugin_override = apply_filters( 'override_load_textdomain', false, $domain, $mofile, $locale );

	if ( true === (bool) $plugin_override ) {
		unset( $l10n_unloaded[ $domain ] );

		return true;
	}

	/**
	 * Fires before the MO translation file is loaded.
	 *
	 * @since 2.9.0
	 *
	 * @param string $domain Text domain. Unique identifier for retrieving translated strings.
	 * @param string $mofile Path to the .mo file.
	 */
	do_action( 'load_textdomain', $domain, $mofile );

	/**
	 * Filters MO file path for loading translations for a specific text domain.
	 *
	 * @since 2.9.0
	 *
	 * @param string $mofile Path to the MO file.
	 * @param string $domain Text domain. Unique identifier for retrieving translated strings.
	 */
	$mofile = apply_filters( 'load_textdomain_mofile', $mofile, $domain );

	if ( ! $locale ) {
		$locale = determine_locale();
	}

	$i18n_controller = WP_Translation_Controller::get_instance();

	// Ensures the correct locale is set as the current one, in case it was filtered.
	$i18n_controller->set_locale( $locale );

	/**
	 * Filters the preferred file format for translation files.
	 *
	 * Can be used to disable the use of PHP files for translations.
	 *
	 * @since 6.5.0
	 *
	 * @param string $preferred_format Preferred file format. Possible values: 'php', 'mo'. Default: 'php'.
	 * @param string $domain           The text domain.
	 */
	$preferred_format = apply_filters( 'translation_file_format', 'php', $domain );
	if ( ! in_array( $preferred_format, array( 'php', 'mo' ), true ) ) {
		$preferred_format = 'php';
	}

	$translation_files = array();

	if ( 'mo' !== $preferred_format ) {
		$translation_files[] = substr_replace( $mofile, ".l10n.$preferred_format", - strlen( '.mo' ) );
	}

	$translation_files[] = $mofile;

	foreach ( $translation_files as $file ) {
		/**
		 * Filters the file path for loading translations for the given text domain.
		 *
		 * Similar to the {@see 'load_textdomain_mofile'} filter with the difference that
		 * the file path could be for an MO or PHP file.
		 *
		 * @since 6.5.0
		 *
		 * @param string $file   Path to the translation file to load.
		 * @param string $domain The text domain.
		 */
		$file = (string) apply_filters( 'load_translation_file', $file, $domain );

		$success = $i18n_controller->load_file( $file, $domain, $locale );

		if ( $success ) {
			if ( isset( $l10n[ $domain ] ) && $l10n[ $domain ] instanceof MO ) {
				$i18n_controller->load_file( $l10n[ $domain ]->get_filename(), $domain, $locale );
			}

			// Unset NOOP_Translations reference in get_translations_for_domain().
			unset( $l10n[ $domain ] );

			$l10n[ $domain ] = new WP_Translations( $i18n_controller, $domain );

			$wp_textdomain_registry->set( $domain, $locale, dirname( $file ) );

			return true;
		}
	}

	return false;
}

/**
 * Unloads translations for a text domain.
 *
 * @since 3.0.0
 * @since 6.1.0 Added the `$reloadable` parameter.
 *
 * @global MO[] $l10n          An array of all currently loaded text domains.
 * @global MO[] $l10n_unloaded An array of all text domains that have been unloaded again.
 *
 * @param string $domain     Text domain. Unique identifier for retrieving translated strings.
 * @param bool   $reloadable Whether the text domain can be loaded just-in-time again.
 * @return bool Whether textdomain was unloaded.
 */
function unload_textdomain( $domain, $reloadable = false ) {
	global $l10n, $l10n_unloaded;

	$l10n_unloaded = (array) $l10n_unloaded;

	/**
	 * Filters whether to override the text domain unloading.
	 *
	 * @since 3.0.0
	 * @since 6.1.0 Added the `$reloadable` parameter.
	 *
	 * @param bool   $override   Whether to override the text domain unloading. Default false.
	 * @param string $domain     Text domain. Unique identifier for retrieving translated strings.
	 * @param bool   $reloadable Whether the text domain can be loaded just-in-time again.
	 */
	$plugin_override = apply_filters( 'override_unload_textdomain', false, $domain, $reloadable );

	if ( $plugin_override ) {
		if ( ! $reloadable ) {
			$l10n_unloaded[ $domain ] = true;
		}

		return true;
	}

	/**
	 * Fires before the text domain is unloaded.
	 *
	 * @since 3.0.0
	 * @since 6.1.0 Added the `$reloadable` parameter.
	 *
	 * @param string $domain     Text domain. Unique identifier for retrieving translated strings.
	 * @param bool   $reloadable Whether the text domain can be loaded just-in-time again.
	 */
	do_action( 'unload_textdomain', $domain, $reloadable );

	// Since multiple locales are supported, reloadable text domains don't actually need to be unloaded.
	if ( ! $reloadable ) {
		WP_Translation_Controller::get_instance()->unload_textdomain( $domain );
	}

	if ( isset( $l10n[ $domain ] ) ) {
		if ( $l10n[ $domain ] instanceof NOOP_Translations ) {
			unset( $l10n[ $domain ] );

			return false;
		}

		unset( $l10n[ $domain ] );

		if ( ! $reloadable ) {
			$l10n_unloaded[ $domain ] = true;
		}

		return true;
	}

	return false;
}

/**
 * Loads default translated strings based on locale.
 *
 * Loads the .mo file in WP_LANG_DIR constant path from WordPress root.
 * The translated (.mo) file is named based on the locale.
 *
 * @see load_textdomain()
 *
 * @since 1.5.0
 *
 * @param string $locale Optional. Locale to load. Default is the value of get_locale().
 * @return bool Whether the textdomain was loaded.
 */
function load_default_textdomain( $locale = null ) {
	if ( null === $locale ) {
		$locale = determine_locale();
	}

	// Unload previously loaded strings so we can switch translations.
	unload_textdomain( 'default', true );

	$return = load_textdomain( 'default', WP_LANG_DIR . "/$locale.mo", $locale );

	if ( ( is_multisite() || ( defined( 'WP_INSTALLING_NETWORK' ) && WP_INSTALLING_NETWORK ) ) && ! file_exists( WP_LANG_DIR . "/admin-$locale.mo" ) ) {
		load_textdomain( 'default', WP_LANG_DIR . "/ms-$locale.mo", $locale );
		return $return;
	}

	if ( is_admin() || wp_installing() || ( defined( 'WP_REPAIRING' ) && WP_REPAIRING ) ) {
		load_textdomain( 'default', WP_LANG_DIR . "/admin-$locale.mo", $locale );
	}

	if ( is_network_admin() || ( defined( 'WP_INSTALLING_NETWORK' ) && WP_INSTALLING_NETWORK ) ) {
		load_textdomain( 'default', WP_LANG_DIR . "/admin-network-$locale.mo", $locale );
	}

	return $return;
}

/**
 * Loads a plugin's translated strings.
 *
 * If the path is not given then it will be the root of the plugin directory.
 *
 * The .mo file should be named based on the text domain with a dash, and then the locale exactly.
 *
 * @since 1.5.0
 * @since 4.6.0 The function now tries to load the .mo file from the languages directory first.
 *
 * @param string       $domain          Unique identifier for retrieving translated strings
 * @param string|false $deprecated      Optional. Deprecated. Use the $plugin_rel_path parameter instead.
 *                                      Default false.
 * @param string|false $plugin_rel_path Optional. Relative path to WP_PLUGIN_DIR where the .mo file resides.
 *                                      Default false.
 * @return bool True when textdomain is successfully loaded, false otherwise.
 */
function load_plugin_textdomain( $domain, $deprecated = false, $plugin_rel_path = false ) {
	/** @var WP_Textdomain_Registry $wp_textdomain_registry */
	global $wp_textdomain_registry;

	if ( ! is_string( $domain ) ) {
		return false;
	}

	/**
	 * Filters a plugin's locale.
	 *
	 * @since 3.0.0
	 *
	 * @param string $locale The plugin's current locale.
	 * @param string $domain Text domain. Unique identifier for retrieving translated strings.
	 */
	$locale = apply_filters( 'plugin_locale', determine_locale(), $domain );

	$mofile = $domain . '-' . $locale . '.mo';

	// Try to load from the languages directory first.
	if ( load_textdomain( $domain, WP_LANG_DIR . '/plugins/' . $mofile, $locale ) ) {
		return true;
	}

	if ( false !== $plugin_rel_path ) {
		$path = WP_PLUGIN_DIR . '/' . trim( $plugin_rel_path, '/' );
	} elseif ( false !== $deprecated ) {
		_deprecated_argument( __FUNCTION__, '2.7.0' );
		$path = ABSPATH . trim( $deprecated, '/' );
	} else {
		$path = WP_PLUGIN_DIR;
	}

	$wp_textdomain_registry->set_custom_path( $domain, $path );

	return load_textdomain( $domain, $path . '/' . $mofile, $locale );
}

/**
 * Loads the translated strings for a plugin residing in the mu-plugins directory.
 *
 * @since 3.0.0
 * @since 4.6.0 The function now tries to load the .mo file from the languages directory first.
 *
 * @global WP_Textdomain_Registry $wp_textdomain_registry WordPress Textdomain Registry.
 *
 * @param string $domain             Text domain. Unique identifier for retrieving translated strings.
 * @param string $mu_plugin_rel_path Optional. Relative to `WPMU_PLUGIN_DIR` directory in which the .mo
 *                                   file resides. Default empty string.
 * @return bool True when textdomain is successfully loaded, false otherwise.
 */
function load_muplugin_textdomain( $domain, $mu_plugin_rel_path = '' ) {
	/** @var WP_Textdomain_Registry $wp_textdomain_registry */
	global $wp_textdomain_registry;

	if ( ! is_string( $domain ) ) {
		return false;
	}

	/** This filter is documented in wp-includes/l10n.php */
	$locale = apply_filters( 'plugin_locale', determine_locale(), $domain );

	$mofile = $domain . '-' . $locale . '.mo';

	// Try to load from the languages directory first.
	if ( load_textdomain( $domain, WP_LANG_DIR . '/plugins/' . $mofile, $locale ) ) {
		return true;
	}

	$path = WPMU_PLUGIN_DIR . '/' . ltrim( $mu_plugin_rel_path, '/' );

	$wp_textdomain_registry->set_custom_path( $domain, $path );

	return load_textdomain( $domain, $path . '/' . $mofile, $locale );
}

/**
 * Loads the theme's translated strings.
 *
 * If the current locale exists as a .mo file in the theme's root directory, it
 * will be included in the translated strings by the $domain.
 *
 * The .mo files must be named based on the locale exactly.
 *
 * @since 1.5.0
 * @since 4.6.0 The function now tries to load the .mo file from the languages directory first.
 *
 * @global WP_Textdomain_Registry $wp_textdomain_registry WordPress Textdomain Registry.
 *
 * @param string       $domain Text domain. Unique identifier for retrieving translated strings.
 * @param string|false $path   Optional. Path to the directory containing the .mo file.
 *                             Default false.
 * @return bool True when textdomain is successfully loaded, false otherwise.
 */
function load_theme_textdomain( $domain, $path = false ) {
	/** @var WP_Textdomain_Registry $wp_textdomain_registry */
	global $wp_textdomain_registry;

	if ( ! is_string( $domain ) ) {
		return false;
	}

	/**
	 * Filters a theme's locale.
	 *
	 * @since 3.0.0
	 *
	 * @param string $locale The theme's current locale.
	 * @param string $domain Text domain. Unique identifier for retrieving translated strings.
	 */
	$locale = apply_filters( 'theme_locale', determine_locale(), $domain );

	$mofile = $domain . '-' . $locale . '.mo';

	// Try to load from the languages directory first.
	if ( load_textdomain( $domain, WP_LANG_DIR . '/themes/' . $mofile, $locale ) ) {
		return true;
	}

	if ( ! $path ) {
		$path = get_template_directory();
	}

	$wp_textdomain_registry->set_custom_path( $domain, $path );

	return load_textdomain( $domain, $path . '/' . $locale . '.mo', $locale );
}

/**
 * Loads the child theme's translated strings.
 *
 * If the current locale exists as a .mo file in the child theme's
 * root directory, it will be included in the translated strings by the $domain.
 *
 * The .mo files must be named based on the locale exactly.
 *
 * @since 2.9.0
 *
 * @param string       $domain Text domain. Unique identifier for retrieving translated strings.
 * @param string|false $path   Optional. Path to the directory containing the .mo file.
 *                             Default false.
 * @return bool True when the theme textdomain is successfully loaded, false otherwise.
 */
function load_child_theme_textdomain( $domain, $path = false ) {
	if ( ! $path ) {
		$path = get_stylesheet_directory();
	}
	return load_theme_textdomain( $domain, $path );
}

/**
 * Loads the script translated strings.
 *
 * @since 5.0.0
 * @since 5.0.2 Uses load_script_translations() to load translation data.
 * @since 5.1.0 The `$domain` parameter was made optional.
 *
 * @see WP_Scripts::set_translations()
 *
 * @param string $handle Name of the script to register a translation domain to.
 * @param string $domain Optional. Text domain. Default 'default'.
 * @param string $path   Optional. The full file path to the directory containing translation files.
 * @return string|false The translated strings in JSON encoding on success,
 *                      false if the script textdomain could not be loaded.
 */
function load_script_textdomain( $handle, $domain = 'default', $path = '' ) {
	$wp_scripts = wp_scripts();

	if ( ! isset( $wp_scripts->registered[ $handle ] ) ) {
		return false;
	}

	$path   = untrailingslashit( $path );
	$locale = determine_locale();

	// If a path was given and the handle file exists simply return it.
	$file_base       = 'default' === $domain ? $locale : $domain . '-' . $locale;
	$handle_filename = $file_base . '-' . $handle . '.json';

	if ( $path ) {
		$translations = load_script_translations( $path . '/' . $handle_filename, $handle, $domain );

		if ( $translations ) {
			return $translations;
		}
	}

	$src = $wp_scripts->registered[ $handle ]->src;

	if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $wp_scripts->content_url && str_starts_with( $src, $wp_scripts->content_url ) ) ) {
		$src = $wp_scripts->base_url . $src;
	}

	$relative       = false;
	$languages_path = WP_LANG_DIR;

	$src_url     = wp_parse_url( $src );
	$content_url = wp_parse_url( content_url() );
	$plugins_url = wp_parse_url( plugins_url() );
	$site_url    = wp_parse_url( site_url() );

	// If the host is the same or it's a relative URL.
	if (
		( ! isset( $content_url['path'] ) || str_starts_with( $src_url['path'], $content_url['path'] ) ) &&
		( ! isset( $src_url['host'] ) || ! isset( $content_url['host'] ) || $src_url['host'] === $content_url['host'] )
	) {
		// Make the src relative the specific plugin or theme.
		if ( isset( $content_url['path'] ) ) {
			$relative = substr( $src_url['path'], strlen( $content_url['path'] ) );
		} else {
			$relative = $src_url['path'];
		}
		$relative = trim( $relative, '/' );
		$relative = explode( '/', $relative );

		$languages_path = WP_LANG_DIR . '/' . $relative[0];

		$relative = array_slice( $relative, 2 ); // Remove plugins/<plugin name> or themes/<theme name>.
		$relative = implode( '/', $relative );
	} elseif (
		( ! isset( $plugins_url['path'] ) || str_starts_with( $src_url['path'], $plugins_url['path'] ) ) &&
		( ! isset( $src_url['host'] ) || ! isset( $plugins_url['host'] ) || $src_url['host'] === $plugins_url['host'] )
	) {
		// Make the src relative the specific plugin.
		if ( isset( $plugins_url['path'] ) ) {
			$relative = substr( $src_url['path'], strlen( $plugins_url['path'] ) );
		} else {
			$relative = $src_url['path'];
		}
		$relative = trim( $relative, '/' );
		$relative = explode( '/', $relative );

		$languages_path = WP_LANG_DIR . '/plugins';

		$relative = array_slice( $relative, 1 ); // Remove <plugin name>.
		$relative = implode( '/', $relative );
	} elseif ( ! isset( $src_url['host'] ) || ! isset( $site_url['host'] ) || $src_url['host'] === $site_url['host'] ) {
		if ( ! isset( $site_url['path'] ) ) {
			$relative = trim( $src_url['path'], '/' );
		} elseif ( str_starts_with( $src_url['path'], trailingslashit( $site_url['path'] ) ) ) {
			// Make the src relative to the WP root.
			$relative = substr( $src_url['path'], strlen( $site_url['path'] ) );
			$relative = trim( $relative, '/' );
		}
	}

	/**
	 * Filters the relative path of scripts used for finding translation files.
	 *
	 * @since 5.0.2
	 *
	 * @param string|false $relative The relative path of the script. False if it could not be determined.
	 * @param string       $src      The full source URL of the script.
	 */
	$relative = apply_filters( 'load_script_textdomain_relative_path', $relative, $src );

	// If the source is not from WP.
	if ( false === $relative ) {
		return load_script_translations( false, $handle, $domain );
	}

	// Translations are always based on the unminified filename.
	if ( str_ends_with( $relative, '.min.js' ) ) {
		$relative = substr( $relative, 0, -7 ) . '.js';
	}

	$md5_filename = $file_base . '-' . md5( $relative ) . '.json';

	if ( $path ) {
		$translations = load_script_translations( $path . '/' . $md5_filename, $handle, $domain );

		if ( $translations ) {
			return $translations;
		}
	}

	$translations = load_script_translations( $languages_path . '/' . $md5_filename, $handle, $domain );

	if ( $translations ) {
		return $translations;
	}

	return load_script_translations( false, $handle, $domain );
}

/**
 * Loads the translation data for the given script handle and text domain.
 *
 * @since 5.0.2
 *
 * @param string|false $file   Path to the translation file to load. False if there isn't one.
 * @param string       $handle Name of the script to register a translation domain to.
 * @param string       $domain The text domain.
 * @return string|false The JSON-encoded translated strings for the given script handle and text domain.
 *                      False if there are none.
 */
function load_script_translations( $file, $handle, $domain ) {
	/**
	 * Pre-filters script translations for the given file, script handle and text domain.
	 *
	 * Returning a non-null value allows to override the default logic, effectively short-circuiting the function.
	 *
	 * @since 5.0.2
	 *
	 * @param string|false|null $translations JSON-encoded translation data. Default null.
	 * @param string|false      $file         Path to the translation file to load. False if there isn't one.
	 * @param string            $handle       Name of the script to register a translation domain to.
	 * @param string            $domain       The text domain.
	 */
	$translations = apply_filters( 'pre_load_script_translations', null, $file, $handle, $domain );

	if ( null !== $translations ) {
		return $translations;
	}

	/**
	 * Filters the file path for loading script translations for the given script handle and text domain.
	 *
	 * @since 5.0.2
	 *
	 * @param string|false $file   Path to the translation file to load. False if there isn't one.
	 * @param string       $handle Name of the script to register a translation domain to.
	 * @param string       $domain The text domain.
	 */
	$file = apply_filters( 'load_script_translation_file', $file, $handle, $domain );

	if ( ! $file || ! is_readable( $file ) ) {
		return false;
	}

	$translations = file_get_contents( $file );

	/**
	 * Filters script translations for the given file, script handle and text domain.
	 *
	 * @since 5.0.2
	 *
	 * @param string $translations JSON-encoded translation data.
	 * @param string $file         Path to the translation file that was loaded.
	 * @param string $handle       Name of the script to register a translation domain to.
	 * @param string $domain       The text domain.
	 */
	return apply_filters( 'load_script_translations', $translations, $file, $handle, $domain );
}

/**
 * Loads plugin and theme text domains just-in-time.
 *
 * When a textdomain is encountered for the first time, we try to load
 * the translation file from `wp-content/languages`, removing the need
 * to call load_plugin_textdomain() or load_theme_textdomain().
 *
 * @since 4.6.0
 * @access private
 *
 * @global MO[]                   $l10n_unloaded          An array of all text domains that have been unloaded again.
 * @global WP_Textdomain_Registry $wp_textdomain_registry WordPress Textdomain Registry.
 *
 * @param string $domain Text domain. Unique identifier for retrieving translated strings.
 * @return bool True when the textdomain is successfully loaded, false otherwise.
 */
function _load_textdomain_just_in_time( $domain ) {
	/** @var WP_Textdomain_Registry $wp_textdomain_registry */
	global $l10n_unloaded, $wp_textdomain_registry;

	$l10n_unloaded = (array) $l10n_unloaded;

	// Short-circuit if domain is 'default' which is reserved for core.
	if ( 'default' === $domain || isset( $l10n_unloaded[ $domain ] ) ) {
		return false;
	}

	if ( ! $wp_textdomain_registry->has( $domain ) ) {
		return false;
	}

	$locale = determine_locale();
	$path   = $wp_textdomain_registry->get( $domain, $locale );
	if ( ! $path ) {
		return false;
	}
	// Themes with their language directory outside of WP_LANG_DIR have a different file name.
	$template_directory   = trailingslashit( get_template_directory() );
	$stylesheet_directory = trailingslashit( get_stylesheet_directory() );
	if ( str_starts_with( $path, $template_directory ) || str_starts_with( $path, $stylesheet_directory ) ) {
		$mofile = "{$path}{$locale}.mo";
	} else {
		$mofile = "{$path}{$domain}-{$locale}.mo";
	}

	return load_textdomain( $domain, $mofile, $locale );
}

/**
 * Returns the Translations instance for a text domain.
 *
 * If there isn't one, returns empty Translations instance.
 *
 * @since 2.8.0
 *
 * @global MO[] $l10n An array of all currently loaded text domains.
 *
 * @param string $domain Text domain. Unique identifier for retrieving translated strings.
 * @return Translations|NOOP_Translations A Translations instance.
 */
function get_translations_for_domain( $domain ) {
	global $l10n;
	if ( isset( $l10n[ $domain ] ) || ( _load_textdomain_just_in_time( $domain ) && isset( $l10n[ $domain ] ) ) ) {
		return $l10n[ $domain ];
	}

	static $noop_translations = null;
	if ( null === $noop_translations ) {
		$noop_translations = new NOOP_Translations();
	}

	$l10n[ $domain ] = &$noop_translations;

	return $noop_translations;
}

/**
 * Determines whether there are translations for the text domain.
 *
 * @since 3.0.0
 *
 * @global MO[] $l10n An array of all currently loaded text domains.
 *
 * @param string $domain Text domain. Unique identifier for retrieving translated strings.
 * @return bool Whether there are translations.
 */
function is_textdomain_loaded( $domain ) {
	global $l10n;
	return isset( $l10n[ $domain ] ) && ! $l10n[ $domain ] instanceof NOOP_Translations;
}

/**
 * Translates role name.
 *
 * Since the role names are in the database and not in the source there
 * are dummy gettext calls to get them into the POT file and this function
 * properly translates them back.
 *
 * The before_last_bar() call is needed, because older installations keep the roles
 * using the old context format: 'Role name|User role' and just skipping the
 * content after the last bar is easier than fixing them in the DB. New installations
 * won't suffer from that problem.
 *
 * @since 2.8.0
 * @since 5.2.0 Added the `$domain` parameter.
 *
 * @param string $name   The role name.
 * @param string $domain Optional. Text domain. Unique identifier for retrieving translated strings.
 *                       Default 'default'.
 * @return string Translated role name on success, original name on failure.
 */
function translate_user_role( $name, $domain = 'default' ) {
	return translate_with_gettext_context( before_last_bar( $name ), 'User role', $domain );
}

/**
 * Gets all available languages based on the presence of *.mo and *.l10n.php files in a given directory.
 *
 * The default directory is WP_LANG_DIR.
 *
 * @since 3.0.0
 * @since 4.7.0 The results are now filterable with the {@see 'get_available_languages'} filter.
 * @since 6.5.0 The initial file list is now cached and also takes into account *.l10n.php files.
 *
 * @global WP_Textdomain_Registry $wp_textdomain_registry WordPress Textdomain Registry.
 *
 * @param string $dir A directory to search for language files.
 *                    Default WP_LANG_DIR.
 * @return string[] An array of language codes or an empty array if no languages are present.
 *                  Language codes are formed by stripping the file extension from the language file names.
 */
function get_available_languages( $dir = null ) {
	global $wp_textdomain_registry;

	$languages = array();

	$path       = is_null( $dir ) ? WP_LANG_DIR : $dir;
	$lang_files = $wp_textdomain_registry->get_language_files_from_path( $path );

	if ( $lang_files ) {
		foreach ( $lang_files as $lang_file ) {
			$lang_file = basename( $lang_file, '.mo' );
			$lang_file = basename( $lang_file, '.l10n.php' );

			if ( ! str_starts_with( $lang_file, 'continents-cities' ) && ! str_starts_with( $lang_file, 'ms-' ) &&
				! str_starts_with( $lang_file, 'admin-' ) ) {
				$languages[] = $lang_file;
			}
		}
	}

	/**
	 * Filters the list of available language codes.
	 *
	 * @since 4.7.0
	 *
	 * @param string[] $languages An array of available language codes.
	 * @param string   $dir       The directory where the language files were found.
	 */
	return apply_filters( 'get_available_languages', array_unique( $languages ), $dir );
}

/**
 * Gets installed translations.
 *
 * Looks in the wp-content/languages directory for translations of
 * plugins or themes.
 *
 * @since 3.7.0
 *
 * @param string $type What to search for. Accepts 'plugins', 'themes', 'core'.
 * @return array Array of language data.
 */
function wp_get_installed_translations( $type ) {
	if ( 'themes' !== $type && 'plugins' !== $type && 'core' !== $type ) {
		return array();
	}

	$dir = 'core' === $type ? '' : "/$type";

	if ( ! is_dir( WP_LANG_DIR ) ) {
		return array();
	}

	if ( $dir && ! is_dir( WP_LANG_DIR . $dir ) ) {
		return array();
	}

	$files = scandir( WP_LANG_DIR . $dir );
	if ( ! $files ) {
		return array();
	}

	$language_data = array();

	foreach ( $files as $file ) {
		if ( '.' === $file[0] || is_dir( WP_LANG_DIR . "$dir/$file" ) ) {
			continue;
		}
		if ( ! str_ends_with( $file, '.po' ) ) {
			continue;
		}
		if ( ! preg_match( '/(?:(.+)-)?([a-z]{2,3}(?:_[A-Z]{2})?(?:_[a-z0-9]+)?).po/', $file, $match ) ) {
			continue;
		}
		if ( ! in_array( substr( $file, 0, -3 ) . '.mo', $files, true ) ) {
			continue;
		}

		list( , $textdomain, $language ) = $match;
		if ( '' === $textdomain ) {
			$textdomain = 'default';
		}
		$language_data[ $textdomain ][ $language ] = wp_get_pomo_file_data( WP_LANG_DIR . "$dir/$file" );
	}
	return $language_data;
}

/**
 * Extracts headers from a PO file.
 *
 * @since 3.7.0
 *
 * @param string $po_file Path to PO file.
 * @return string[] Array of PO file header values keyed by header name.
 */
function wp_get_pomo_file_data( $po_file ) {
	$headers = get_file_data(
		$po_file,
		array(
			'POT-Creation-Date'  => '"POT-Creation-Date',
			'PO-Revision-Date'   => '"PO-Revision-Date',
			'Project-Id-Version' => '"Project-Id-Version',
			'X-Generator'        => '"X-Generator',
		)
	);
	foreach ( $headers as $header => $value ) {
		// Remove possible contextual '\n' and closing double quote.
		$headers[ $header ] = preg_replace( '~(\\\n)?"$~', '', $value );
	}
	return $headers;
}

/**
 * Displays or returns a Language selector.
 *
 * @since 4.0.0
 * @since 4.3.0 Introduced the `echo` argument.
 * @since 4.7.0 Introduced the `show_option_site_default` argument.
 * @since 5.1.0 Introduced the `show_option_en_us` argument.
 * @since 5.9.0 Introduced the `explicit_option_en_us` argument.
 *
 * @see get_available_languages()
 * @see wp_get_available_translations()
 *
 * @param string|array $args {
 *     Optional. Array or string of arguments for outputting the language selector.
 *
 *     @type string   $id                           ID attribute of the select element. Default 'locale'.
 *     @type string   $name                         Name attribute of the select element. Default 'locale'.
 *     @type string[] $languages                    List of installed languages, contain only the locales.
 *                                                  Default empty array.
 *     @type array    $translations                 List of available translations. Default result of
 *                                                  wp_get_available_translations().
 *     @type string   $selected                     Language which should be selected. Default empty.
 *     @type bool|int $echo                         Whether to echo the generated markup. Accepts 0, 1, or their
 *                                                  boolean equivalents. Default 1.
 *     @type bool     $show_available_translations  Whether to show available translations. Default true.
 *     @type bool     $show_option_site_default     Whether to show an option to fall back to the site's locale. Default false.
 *     @type bool     $show_option_en_us            Whether to show an option for English (United States). Default true.
 *     @type bool     $explicit_option_en_us        Whether the English (United States) option uses an explicit value of en_US
 *                                                  instead of an empty value. Default false.
 * }
 * @return string HTML dropdown list of languages.
 */
function wp_dropdown_languages( $args = array() ) {

	$parsed_args = wp_parse_args(
		$args,
		array(
			'id'                          => 'locale',
			'name'                        => 'locale',
			'languages'                   => array(),
			'translations'                => array(),
			'selected'                    => '',
			'echo'                        => 1,
			'show_available_translations' => true,
			'show_option_site_default'    => false,
			'show_option_en_us'           => true,
			'explicit_option_en_us'       => false,
		)
	);

	// Bail if no ID or no name.
	if ( ! $parsed_args['id'] || ! $parsed_args['name'] ) {
		return;
	}

	// English (United States) uses an empty string for the value attribute.
	if ( 'en_US' === $parsed_args['selected'] && ! $parsed_args['explicit_option_en_us'] ) {
		$parsed_args['selected'] = '';
	}

	$translations = $parsed_args['translations'];
	if ( empty( $translations ) ) {
		require_once ABSPATH . 'wp-admin/includes/translation-install.php';
		$translations = wp_get_available_translations();
	}

	/*
	 * $parsed_args['languages'] should only contain the locales. Find the locale in
	 * $translations to get the native name. Fall back to locale.
	 */
	$languages = array();
	foreach ( $parsed_args['languages'] as $locale ) {
		if ( isset( $translations[ $locale ] ) ) {
			$translation = $translations[ $locale ];
			$languages[] = array(
				'language'    => $translation['language'],
				'native_name' => $translation['native_name'],
				'lang'        => current( $translation['iso'] ),
			);

			// Remove installed language from available translations.
			unset( $translations[ $locale ] );
		} else {
			$languages[] = array(
				'language'    => $locale,
				'native_name' => $locale,
				'lang'        => '',
			);
		}
	}

	$translations_available = ( ! empty( $translations ) && $parsed_args['show_available_translations'] );

	// Holds the HTML markup.
	$structure = array();

	// List installed languages.
	if ( $translations_available ) {
		$structure[] = '<optgroup label="' . esc_attr_x( 'Installed', 'translations' ) . '">';
	}

	// Site default.
	if ( $parsed_args['show_option_site_default'] ) {
		$structure[] = sprintf(
			'<option value="site-default" data-installed="1"%s>%s</option>',
			selected( 'site-default', $parsed_args['selected'], false ),
			_x( 'Site Default', 'default site language' )
		);
	}

	if ( $parsed_args['show_option_en_us'] ) {
		$value       = ( $parsed_args['explicit_option_en_us'] ) ? 'en_US' : '';
		$structure[] = sprintf(
			'<option value="%s" lang="en" data-installed="1"%s>English (United States)</option>',
			esc_attr( $value ),
			selected( '', $parsed_args['selected'], false )
		);
	}

	// List installed languages.
	foreach ( $languages as $language ) {
		$structure[] = sprintf(
			'<option value="%s" lang="%s"%s data-installed="1">%s</option>',
			esc_attr( $language['language'] ),
			esc_attr( $language['lang'] ),
			selected( $language['language'], $parsed_args['selected'], false ),
			esc_html( $language['native_name'] )
		);
	}
	if ( $translations_available ) {
		$structure[] = '</optgroup>';
	}

	// List available translations.
	if ( $translations_available ) {
		$structure[] = '<optgroup label="' . esc_attr_x( 'Available', 'translations' ) . '">';
		foreach ( $translations as $translation ) {
			$structure[] = sprintf(
				'<option value="%s" lang="%s"%s>%s</option>',
				esc_attr( $translation['language'] ),
				esc_attr( current( $translation['iso'] ) ),
				selected( $translation['language'], $parsed_args['selected'], false ),
				esc_html( $translation['native_name'] )
			);
		}
		$structure[] = '</optgroup>';
	}

	// Combine the output string.
	$output  = sprintf( '<select name="%s" id="%s">', esc_attr( $parsed_args['name'] ), esc_attr( $parsed_args['id'] ) );
	$output .= implode( "\n", $structure );
	$output .= '</select>';

	if ( $parsed_args['echo'] ) {
		echo $output;
	}

	return $output;
}

/**
 * Determines whether the current locale is right-to-left (RTL).
 *
 * 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 3.0.0
 *
 * @global WP_Locale $wp_locale WordPress date and time locale object.
 *
 * @return bool Whether locale is RTL.
 */
function is_rtl() {
	global $wp_locale;
	if ( ! ( $wp_locale instanceof WP_Locale ) ) {
		return false;
	}
	return $wp_locale->is_rtl();
}

/**
 * Switches the translations according to the given locale.
 *
 * @since 4.7.0
 *
 * @global WP_Locale_Switcher $wp_locale_switcher WordPress locale switcher object.
 *
 * @param string $locale The locale.
 * @return bool True on success, false on failure.
 */
function switch_to_locale( $locale ) {
	/* @var WP_Locale_Switcher $wp_locale_switcher */
	global $wp_locale_switcher;

	if ( ! $wp_locale_switcher ) {
		return false;
	}

	return $wp_locale_switcher->switch_to_locale( $locale );
}

/**
 * Switches the translations according to the given user's locale.
 *
 * @since 6.2.0
 *
 * @global WP_Locale_Switcher $wp_locale_switcher WordPress locale switcher object.
 *
 * @param int $user_id User ID.
 * @return bool True on success, false on failure.
 */
function switch_to_user_locale( $user_id ) {
	/* @var WP_Locale_Switcher $wp_locale_switcher */
	global $wp_locale_switcher;

	if ( ! $wp_locale_switcher ) {
		return false;
	}

	return $wp_locale_switcher->switch_to_user_locale( $user_id );
}

/**
 * Restores the translations according to the previous locale.
 *
 * @since 4.7.0
 *
 * @global WP_Locale_Switcher $wp_locale_switcher WordPress locale switcher object.
 *
 * @return string|false Locale on success, false on error.
 */
function restore_previous_locale() {
	/* @var WP_Locale_Switcher $wp_locale_switcher */
	global $wp_locale_switcher;

	if ( ! $wp_locale_switcher ) {
		return false;
	}

	return $wp_locale_switcher->restore_previous_locale();
}

/**
 * Restores the translations according to the original locale.
 *
 * @since 4.7.0
 *
 * @global WP_Locale_Switcher $wp_locale_switcher WordPress locale switcher object.
 *
 * @return string|false Locale on success, false on error.
 */
function restore_current_locale() {
	/* @var WP_Locale_Switcher $wp_locale_switcher */
	global $wp_locale_switcher;

	if ( ! $wp_locale_switcher ) {
		return false;
	}

	return $wp_locale_switcher->restore_current_locale();
}

/**
 * Determines whether switch_to_locale() is in effect.
 *
 * @since 4.7.0
 *
 * @global WP_Locale_Switcher $wp_locale_switcher WordPress locale switcher object.
 *
 * @return bool True if the locale has been switched, false otherwise.
 */
function is_locale_switched() {
	/* @var WP_Locale_Switcher $wp_locale_switcher */
	global $wp_locale_switcher;

	return $wp_locale_switcher->is_switched();
}

/**
 * Translates the provided settings value using its i18n schema.
 *
 * @since 5.9.0
 * @access private
 *
 * @param string|string[]|array[]|object $i18n_schema I18n schema for the setting.
 * @param string|string[]|array[]        $settings    Value for the settings.
 * @param string                         $textdomain  Textdomain to use with translations.
 *
 * @return string|string[]|array[] Translated settings.
 */
function translate_settings_using_i18n_schema( $i18n_schema, $settings, $textdomain ) {
	if ( empty( $i18n_schema ) || empty( $settings ) || empty( $textdomain ) ) {
		return $settings;
	}

	if ( is_string( $i18n_schema ) && is_string( $settings ) ) {
		return translate_with_gettext_context( $settings, $i18n_schema, $textdomain );
	}
	if ( is_array( $i18n_schema ) && is_array( $settings ) ) {
		$translated_settings = array();
		foreach ( $settings as $value ) {
			$translated_settings[] = translate_settings_using_i18n_schema( $i18n_schema[0], $value, $textdomain );
		}
		return $translated_settings;
	}
	if ( is_object( $i18n_schema ) && is_array( $settings ) ) {
		$group_key           = '*';
		$translated_settings = array();
		foreach ( $settings as $key => $value ) {
			if ( isset( $i18n_schema->$key ) ) {
				$translated_settings[ $key ] = translate_settings_using_i18n_schema( $i18n_schema->$key, $value, $textdomain );
			} elseif ( isset( $i18n_schema->$group_key ) ) {
				$translated_settings[ $key ] = translate_settings_using_i18n_schema( $i18n_schema->$group_key, $value, $textdomain );
			} else {
				$translated_settings[ $key ] = $value;
			}
		}
		return $translated_settings;
	}
	return $settings;
}

/**
 * Retrieves the list item separator based on the locale.
 *
 * @since 6.0.0
 *
 * @global WP_Locale $wp_locale WordPress date and time locale object.
 *
 * @return string Locale-specific list item separator.
 */
function wp_get_list_item_separator() {
	global $wp_locale;

	if ( ! ( $wp_locale instanceof WP_Locale ) ) {
		// Default value of WP_Locale::get_list_item_separator().
		/* translators: Used between list items, there is a space after the comma. */
		return __( ', ' );
	}

	return $wp_locale->get_list_item_separator();
}

/**
 * Retrieves the word count type based on the locale.
 *
 * @since 6.2.0
 *
 * @global WP_Locale $wp_locale WordPress date and time locale object.
 *
 * @return string Locale-specific word count type. Possible values are `characters_excluding_spaces`,
 *                `characters_including_spaces`, or `words`. Defaults to `words`.
 */
function wp_get_word_count_type() {
	global $wp_locale;

	if ( ! ( $wp_locale instanceof WP_Locale ) ) {
		// Default value of WP_Locale::get_word_count_type().
		return 'words';
	}

	return $wp_locale->get_word_count_type();
}
/**
 * User API: WP_User class
 *
 * @package WordPress
 * @subpackage Users
 * @since 4.4.0
 */

/**
 * Core class used to implement the WP_User object.
 *
 * @since 2.0.0
 *
 * @property string $nickname
 * @property string $description
 * @property string $user_description
 * @property string $first_name
 * @property string $user_firstname
 * @property string $last_name
 * @property string $user_lastname
 * @property string $user_login
 * @property string $user_pass
 * @property string $user_nicename
 * @property string $user_email
 * @property string $user_url
 * @property string $user_registered
 * @property string $user_activation_key
 * @property string $user_status
 * @property int    $user_level
 * @property string $display_name
 * @property string $spam
 * @property string $deleted
 * @property string $locale
 * @property string $rich_editing
 * @property string $syntax_highlighting
 * @property string $use_ssl
 */
#[AllowDynamicProperties]
class WP_User {
	/**
	 * User data container.
	 *
	 * @since 2.0.0
	 * @var stdClass
	 */
	public $data;

	/**
	 * The user's ID.
	 *
	 * @since 2.1.0
	 * @var int
	 */
	public $ID = 0;

	/**
	 * Capabilities that the individual user has been granted outside of those inherited from their role.
	 *
	 * @since 2.0.0
	 * @var bool[] Array of key/value pairs where keys represent a capability name
	 *             and boolean values represent whether the user has that capability.
	 */
	public $caps = array();

	/**
	 * User metadata option name.
	 *
	 * @since 2.0.0
	 * @var string
	 */
	public $cap_key;

	/**
	 * The roles the user is part of.
	 *
	 * @since 2.0.0
	 * @var string[]
	 */
	public $roles = array();

	/**
	 * All capabilities the user has, including individual and role based.
	 *
	 * @since 2.0.0
	 * @var bool[] Array of key/value pairs where keys represent a capability name
	 *             and boolean values represent whether the user has that capability.
	 */
	public $allcaps = array();

	/**
	 * The filter context applied to user data fields.
	 *
	 * @since 2.9.0
	 * @var string
	 */
	public $filter = null;

	/**
	 * The site ID the capabilities of this user are initialized for.
	 *
	 * @since 4.9.0
	 * @var int
	 */
	private $site_id = 0;

	/**
	 * @since 3.3.0
	 * @var array
	 */
	private static $back_compat_keys;

	/**
	 * Constructor.
	 *
	 * Retrieves the userdata and passes it to WP_User::init().
	 *
	 * @since 2.0.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param int|string|stdClass|WP_User $id      User's ID, a WP_User object, or a user object from the DB.
	 * @param string                      $name    Optional. User's username
	 * @param int                         $site_id Optional Site ID, defaults to current site.
	 */
	public function __construct( $id = 0, $name = '', $site_id = '' ) {
		global $wpdb;

		if ( ! isset( self::$back_compat_keys ) ) {
			$prefix = $wpdb->prefix;

			self::$back_compat_keys = array(
				'user_firstname'             => 'first_name',
				'user_lastname'              => 'last_name',
				'user_description'           => 'description',
				'user_level'                 => $prefix . 'user_level',
				$prefix . 'usersettings'     => $prefix . 'user-settings',
				$prefix . 'usersettingstime' => $prefix . 'user-settings-time',
			);
		}

		if ( $id instanceof WP_User ) {
			$this->init( $id->data, $site_id );
			return;
		} elseif ( is_object( $id ) ) {
			$this->init( $id, $site_id );
			return;
		}

		if ( ! empty( $id ) && ! is_numeric( $id ) ) {
			$name = $id;
			$id   = 0;
		}

		if ( $id ) {
			$data = self::get_data_by( 'id', $id );
		} else {
			$data = self::get_data_by( 'login', $name );
		}

		if ( $data ) {
			$this->init( $data, $site_id );
		} else {
			$this->data = new stdClass();
		}
	}

	/**
	 * Sets up object properties, including capabilities.
	 *
	 * @since 3.3.0
	 *
	 * @param object $data    User DB row object.
	 * @param int    $site_id Optional. The site ID to initialize for.
	 */
	public function init( $data, $site_id = '' ) {
		if ( ! isset( $data->ID ) ) {
			$data->ID = 0;
		}
		$this->data = $data;
		$this->ID   = (int) $data->ID;

		$this->for_site( $site_id );
	}

	/**
	 * Returns only the main user fields.
	 *
	 * @since 3.3.0
	 * @since 4.4.0 Added 'ID' as an alias of 'id' for the `$field` parameter.
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param string     $field The field to query against: Accepts 'id', 'ID', 'slug', 'email' or 'login'.
	 * @param string|int $value The field value.
	 * @return object|false Raw user object.
	 */
	public static function get_data_by( $field, $value ) {
		global $wpdb;

		// 'ID' is an alias of 'id'.
		if ( 'ID' === $field ) {
			$field = 'id';
		}

		if ( 'id' === $field ) {
			// Make sure the value is numeric to avoid casting objects, for example, to int 1.
			if ( ! is_numeric( $value ) ) {
				return false;
			}
			$value = (int) $value;
			if ( $value < 1 ) {
				return false;
			}
		} else {
			$value = trim( $value );
		}

		if ( ! $value ) {
			return false;
		}

		switch ( $field ) {
			case 'id':
				$user_id  = $value;
				$db_field = 'ID';
				break;
			case 'slug':
				$user_id  = wp_cache_get( $value, 'userslugs' );
				$db_field = 'user_nicename';
				break;
			case 'email':
				$user_id  = wp_cache_get( $value, 'useremail' );
				$db_field = 'user_email';
				break;
			case 'login':
				$value    = sanitize_user( $value );
				$user_id  = wp_cache_get( $value, 'userlogins' );
				$db_field = 'user_login';
				break;
			default:
				return false;
		}

		if ( false !== $user_id ) {
			$user = wp_cache_get( $user_id, 'users' );
			if ( $user ) {
				return $user;
			}
		}

		$user = $wpdb->get_row(
			$wpdb->prepare(
				"SELECT * FROM $wpdb->users WHERE $db_field = %s LIMIT 1",
				$value
			)
		);
		if ( ! $user ) {
			return false;
		}

		update_user_caches( $user );

		return $user;
	}

	/**
	 * Magic method for checking the existence of a certain custom field.
	 *
	 * @since 3.3.0
	 *
	 * @param string $key User meta key to check if set.
	 * @return bool Whether the given user meta key is set.
	 */
	public function __isset( $key ) {
		if ( 'id' === $key ) {
			_deprecated_argument(
				'WP_User->id',
				'2.1.0',
				sprintf(
					/* translators: %s: WP_User->ID */
					__( 'Use %s instead.' ),
					'<code>WP_User->ID</code>'
				)
			);
			$key = 'ID';
		}

		if ( isset( $this->data->$key ) ) {
			return true;
		}

		if ( isset( self::$back_compat_keys[ $key ] ) ) {
			$key = self::$back_compat_keys[ $key ];
		}

		return metadata_exists( 'user', $this->ID, $key );
	}

	/**
	 * Magic method for accessing custom fields.
	 *
	 * @since 3.3.0
	 *
	 * @param string $key User meta key to retrieve.
	 * @return mixed Value of the given user meta key (if set). If `$key` is 'id', the user ID.
	 */
	public function __get( $key ) {
		if ( 'id' === $key ) {
			_deprecated_argument(
				'WP_User->id',
				'2.1.0',
				sprintf(
					/* translators: %s: WP_User->ID */
					__( 'Use %s instead.' ),
					'<code>WP_User->ID</code>'
				)
			);
			return $this->ID;
		}

		if ( isset( $this->data->$key ) ) {
			$value = $this->data->$key;
		} else {
			if ( isset( self::$back_compat_keys[ $key ] ) ) {
				$key = self::$back_compat_keys[ $key ];
			}
			$value = get_user_meta( $this->ID, $key, true );
		}

		if ( $this->filter ) {
			$value = sanitize_user_field( $key, $value, $this->ID, $this->filter );
		}

		return $value;
	}

	/**
	 * Magic method for setting custom user fields.
	 *
	 * This method does not update custom fields in the database. It only stores
	 * the value on the WP_User instance.
	 *
	 * @since 3.3.0
	 *
	 * @param string $key   User meta key.
	 * @param mixed  $value User meta value.
	 */
	public function __set( $key, $value ) {
		if ( 'id' === $key ) {
			_deprecated_argument(
				'WP_User->id',
				'2.1.0',
				sprintf(
					/* translators: %s: WP_User->ID */
					__( 'Use %s instead.' ),
					'<code>WP_User->ID</code>'
				)
			);
			$this->ID = $value;
			return;
		}

		$this->data->$key = $value;
	}

	/**
	 * Magic method for unsetting a certain custom field.
	 *
	 * @since 4.4.0
	 *
	 * @param string $key User meta key to unset.
	 */
	public function __unset( $key ) {
		if ( 'id' === $key ) {
			_deprecated_argument(
				'WP_User->id',
				'2.1.0',
				sprintf(
					/* translators: %s: WP_User->ID */
					__( 'Use %s instead.' ),
					'<code>WP_User->ID</code>'
				)
			);
		}

		if ( isset( $this->data->$key ) ) {
			unset( $this->data->$key );
		}

		if ( isset( self::$back_compat_keys[ $key ] ) ) {
			unset( self::$back_compat_keys[ $key ] );
		}
	}

	/**
	 * Determines whether the user exists in the database.
	 *
	 * @since 3.4.0
	 *
	 * @return bool True if user exists in the database, false if not.
	 */
	public function exists() {
		return ! empty( $this->ID );
	}

	/**
	 * Retrieves the value of a property or meta key.
	 *
	 * Retrieves from the users and usermeta table.
	 *
	 * @since 3.3.0
	 *
	 * @param string $key Property
	 * @return mixed
	 */
	public function get( $key ) {
		return $this->__get( $key );
	}

	/**
	 * Determines whether a property or meta key is set.
	 *
	 * Consults the users and usermeta tables.
	 *
	 * @since 3.3.0
	 *
	 * @param string $key Property.
	 * @return bool
	 */
	public function has_prop( $key ) {
		return $this->__isset( $key );
	}

	/**
	 * Returns an array representation.
	 *
	 * @since 3.5.0
	 *
	 * @return array Array representation.
	 */
	public function to_array() {
		return get_object_vars( $this->data );
	}

	/**
	 * Makes private/protected methods readable for backward compatibility.
	 *
	 * @since 4.3.0
	 *
	 * @param string $name      Method to call.
	 * @param array  $arguments Arguments to pass when calling.
	 * @return mixed|false Return value of the callback, false otherwise.
	 */
	public function __call( $name, $arguments ) {
		if ( '_init_caps' === $name ) {
			return $this->_init_caps( ...$arguments );
		}
		return false;
	}

	/**
	 * Sets up capability object properties.
	 *
	 * Will set the value for the 'cap_key' property to current database table
	 * prefix, followed by 'capabilities'. Will then check to see if the
	 * property matching the 'cap_key' exists and is an array. If so, it will be
	 * used.
	 *
	 * @since 2.1.0
	 * @deprecated 4.9.0 Use WP_User::for_site()
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param string $cap_key Optional capability key
	 */
	protected function _init_caps( $cap_key = '' ) {
		global $wpdb;

		_deprecated_function( __METHOD__, '4.9.0', 'WP_User::for_site()' );

		if ( empty( $cap_key ) ) {
			$this->cap_key = $wpdb->get_blog_prefix( $this->site_id ) . 'capabilities';
		} else {
			$this->cap_key = $cap_key;
		}

		$this->caps = $this->get_caps_data();

		$this->get_role_caps();
	}

	/**
	 * Retrieves all of the capabilities of the user's roles, and merges them with
	 * individual user capabilities.
	 *
	 * All of the capabilities of the user's roles are merged with the user's individual
	 * capabilities. This means that the user can be denied specific capabilities that
	 * their role might have, but the user is specifically denied.
	 *
	 * @since 2.0.0
	 *
	 * @return bool[] Array of key/value pairs where keys represent a capability name
	 *                and boolean values represent whether the user has that capability.
	 */
	public function get_role_caps() {
		$switch_site = false;
		if ( is_multisite() && get_current_blog_id() !== $this->site_id ) {
			$switch_site = true;

			switch_to_blog( $this->site_id );
		}

		$wp_roles = wp_roles();

		// Filter out caps that are not role names and assign to $this->roles.
		if ( is_array( $this->caps ) ) {
			$this->roles = array_filter( array_keys( $this->caps ), array( $wp_roles, 'is_role' ) );
		}

		// Build $allcaps from role caps, overlay user's $caps.
		$this->allcaps = array();
		foreach ( (array) $this->roles as $role ) {
			$the_role      = $wp_roles->get_role( $role );
			$this->allcaps = array_merge( (array) $this->allcaps, (array) $the_role->capabilities );
		}
		$this->allcaps = array_merge( (array) $this->allcaps, (array) $this->caps );

		if ( $switch_site ) {
			restore_current_blog();
		}

		return $this->allcaps;
	}

	/**
	 * Adds role to user.
	 *
	 * Updates the user's meta data option with capabilities and roles.
	 *
	 * @since 2.0.0
	 *
	 * @param string $role Role name.
	 */
	public function add_role( $role ) {
		if ( empty( $role ) ) {
			return;
		}

		if ( in_array( $role, $this->roles, true ) ) {
			return;
		}

		$this->caps[ $role ] = true;
		update_user_meta( $this->ID, $this->cap_key, $this->caps );
		$this->get_role_caps();
		$this->update_user_level_from_caps();

		/**
		 * Fires immediately after the user has been given a new role.
		 *
		 * @since 4.3.0
		 *
		 * @param int    $user_id The user ID.
		 * @param string $role    The new role.
		 */
		do_action( 'add_user_role', $this->ID, $role );
	}

	/**
	 * Removes role from user.
	 *
	 * @since 2.0.0
	 *
	 * @param string $role Role name.
	 */
	public function remove_role( $role ) {
		if ( ! in_array( $role, $this->roles, true ) ) {
			return;
		}

		unset( $this->caps[ $role ] );
		update_user_meta( $this->ID, $this->cap_key, $this->caps );
		$this->get_role_caps();
		$this->update_user_level_from_caps();

		/**
		 * Fires immediately after a role as been removed from a user.
		 *
		 * @since 4.3.0
		 *
		 * @param int    $user_id The user ID.
		 * @param string $role    The removed role.
		 */
		do_action( 'remove_user_role', $this->ID, $role );
	}

	/**
	 * Sets the role of the user.
	 *
	 * This will remove the previous roles of the user and assign the user the
	 * new one. You can set the role to an empty string and it will remove all
	 * of the roles from the user.
	 *
	 * @since 2.0.0
	 *
	 * @param string $role Role name.
	 */
	public function set_role( $role ) {
		if ( 1 === count( $this->roles ) && current( $this->roles ) === $role ) {
			return;
		}

		foreach ( (array) $this->roles as $oldrole ) {
			unset( $this->caps[ $oldrole ] );
		}

		$old_roles = $this->roles;

		if ( ! empty( $role ) ) {
			$this->caps[ $role ] = true;
			$this->roles         = array( $role => true );
		} else {
			$this->roles = array();
		}

		update_user_meta( $this->ID, $this->cap_key, $this->caps );
		$this->get_role_caps();
		$this->update_user_level_from_caps();

		foreach ( $old_roles as $old_role ) {
			if ( ! $old_role || $old_role === $role ) {
				continue;
			}

			/** This action is documented in wp-includes/class-wp-user.php */
			do_action( 'remove_user_role', $this->ID, $old_role );
		}

		if ( $role && ! in_array( $role, $old_roles, true ) ) {
			/** This action is documented in wp-includes/class-wp-user.php */
			do_action( 'add_user_role', $this->ID, $role );
		}

		/**
		 * Fires after the user's role has changed.
		 *
		 * @since 2.9.0
		 * @since 3.6.0 Added $old_roles to include an array of the user's previous roles.
		 *
		 * @param int      $user_id   The user ID.
		 * @param string   $role      The new role.
		 * @param string[] $old_roles An array of the user's previous roles.
		 */
		do_action( 'set_user_role', $this->ID, $role, $old_roles );
	}

	/**
	 * Chooses the maximum level the user has.
	 *
	 * Will compare the level from the $item parameter against the $max
	 * parameter. If the item is incorrect, then just the $max parameter value
	 * will be returned.
	 *
	 * Used to get the max level based on the capabilities the user has. This
	 * is also based on roles, so if the user is assigned the Administrator role
	 * then the capability 'level_10' will exist and the user will get that
	 * value.
	 *
	 * @since 2.0.0
	 *
	 * @param int    $max  Max level of user.
	 * @param string $item Level capability name.
	 * @return int Max Level.
	 */
	public function level_reduction( $max, $item ) {
		if ( preg_match( '/^level_(10|[0-9])$/i', $item, $matches ) ) {
			$level = (int) $matches[1];
			return max( $max, $level );
		} else {
			return $max;
		}
	}

	/**
	 * Updates the maximum user level for the user.
	 *
	 * Updates the 'user_level' user metadata (includes prefix that is the
	 * database table prefix) with the maximum user level. Gets the value from
	 * the all of the capabilities that the user has.
	 *
	 * @since 2.0.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 */
	public function update_user_level_from_caps() {
		global $wpdb;
		$this->user_level = array_reduce( array_keys( $this->allcaps ), array( $this, 'level_reduction' ), 0 );
		update_user_meta( $this->ID, $wpdb->get_blog_prefix() . 'user_level', $this->user_level );
	}

	/**
	 * Adds capability and grant or deny access to capability.
	 *
	 * @since 2.0.0
	 *
	 * @param string $cap   Capability name.
	 * @param bool   $grant Whether to grant capability to user.
	 */
	public function add_cap( $cap, $grant = true ) {
		$this->caps[ $cap ] = $grant;
		update_user_meta( $this->ID, $this->cap_key, $this->caps );
		$this->get_role_caps();
		$this->update_user_level_from_caps();
	}

	/**
	 * Removes capability from user.
	 *
	 * @since 2.0.0
	 *
	 * @param string $cap Capability name.
	 */
	public function remove_cap( $cap ) {
		if ( ! isset( $this->caps[ $cap ] ) ) {
			return;
		}
		unset( $this->caps[ $cap ] );
		update_user_meta( $this->ID, $this->cap_key, $this->caps );
		$this->get_role_caps();
		$this->update_user_level_from_caps();
	}

	/**
	 * Removes all of the capabilities of the user.
	 *
	 * @since 2.1.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 */
	public function remove_all_caps() {
		global $wpdb;
		$this->caps = array();
		delete_user_meta( $this->ID, $this->cap_key );
		delete_user_meta( $this->ID, $wpdb->get_blog_prefix() . 'user_level' );
		$this->get_role_caps();
	}

	/**
	 * Returns whether the user has the specified capability.
	 *
	 * This function also accepts an ID of an object to check against if the capability is a meta capability. Meta
	 * capabilities such as `edit_post` and `edit_user` are capabilities used by the `map_meta_cap()` function to
	 * map to primitive capabilities that a user or role has, such as `edit_posts` and `edit_others_posts`.
	 *
	 * Example usage:
	 *
	 *     $user->has_cap( 'edit_posts' );
	 *     $user->has_cap( 'edit_post', $post->ID );
	 *     $user->has_cap( 'edit_post_meta', $post->ID, $meta_key );
	 *
	 * While checking against a role in place of a capability is supported in part, this practice is discouraged as it
	 * may produce unreliable results.
	 *
	 * @since 2.0.0
	 * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
	 *              by adding it to the function signature.
	 *
	 * @see map_meta_cap()
	 *
	 * @param string $cap     Capability name.
	 * @param mixed  ...$args Optional further parameters, typically starting with an object ID.
	 * @return bool Whether the user has the given capability, or, if an object ID is passed, whether the user has
	 *              the given capability for that object.
	 */
	public function has_cap( $cap, ...$args ) {
		if ( is_numeric( $cap ) ) {
			_deprecated_argument( __FUNCTION__, '2.0.0', __( 'Usage of user levels is deprecated. Use capabilities instead.' ) );
			$cap = $this->translate_level_to_cap( $cap );
		}

		$caps = map_meta_cap( $cap, $this->ID, ...$args );

		// Multisite super admin has all caps by definition, Unless specifically denied.
		if ( is_multisite() && is_super_admin( $this->ID ) ) {
			if ( in_array( 'do_not_allow', $caps, true ) ) {
				return false;
			}
			return true;
		}

		// Maintain BC for the argument passed to the "user_has_cap" filter.
		$args = array_merge( array( $cap, $this->ID ), $args );

		/**
		 * Dynamically filter a user's capabilities.
		 *
		 * @since 2.0.0
		 * @since 3.7.0 Added the `$user` parameter.
		 *
		 * @param bool[]   $allcaps Array of key/value pairs where keys represent a capability name
		 *                          and boolean values represent whether the user has that capability.
		 * @param string[] $caps    Required primitive capabilities for the requested capability.
		 * @param array    $args {
		 *     Arguments that accompany the requested capability check.
		 *
		 *     @type string    $0 Requested capability.
		 *     @type int       $1 Concerned user ID.
		 *     @type mixed  ...$2 Optional second and further parameters, typically object ID.
		 * }
		 * @param WP_User  $user    The user object.
		 */
		$capabilities = apply_filters( 'user_has_cap', $this->allcaps, $caps, $args, $this );

		// Everyone is allowed to exist.
		$capabilities['exist'] = true;

		// Nobody is allowed to do things they are not allowed to do.
		unset( $capabilities['do_not_allow'] );

		// Must have ALL requested caps.
		foreach ( (array) $caps as $cap ) {
			if ( empty( $capabilities[ $cap ] ) ) {
				return false;
			}
		}

		return true;
	}

	/**
	 * Converts numeric level to level capability name.
	 *
	 * Prepends 'level_' to level number.
	 *
	 * @since 2.0.0
	 *
	 * @param int $level Level number, 1 to 10.
	 * @return string
	 */
	public function translate_level_to_cap( $level ) {
		return 'level_' . $level;
	}

	/**
	 * Sets the site to operate on. Defaults to the current site.
	 *
	 * @since 3.0.0
	 * @deprecated 4.9.0 Use WP_User::for_site()
	 *
	 * @param int $blog_id Optional. Site ID, defaults to current site.
	 */
	public function for_blog( $blog_id = '' ) {
		_deprecated_function( __METHOD__, '4.9.0', 'WP_User::for_site()' );

		$this->for_site( $blog_id );
	}

	/**
	 * Sets the site to operate on. Defaults to the current site.
	 *
	 * @since 4.9.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param int $site_id Site ID to initialize user capabilities for. Default is the current site.
	 */
	public function for_site( $site_id = '' ) {
		global $wpdb;

		if ( ! empty( $site_id ) ) {
			$this->site_id = absint( $site_id );
		} else {
			$this->site_id = get_current_blog_id();
		}

		$this->cap_key = $wpdb->get_blog_prefix( $this->site_id ) . 'capabilities';

		$this->caps = $this->get_caps_data();

		$this->get_role_caps();
	}

	/**
	 * Gets the ID of the site for which the user's capabilities are currently initialized.
	 *
	 * @since 4.9.0
	 *
	 * @return int Site ID.
	 */
	public function get_site_id() {
		return $this->site_id;
	}

	/**
	 * Gets the available user capabilities data.
	 *
	 * @since 4.9.0
	 *
	 * @return bool[] List of capabilities keyed by the capability name,
	 *                e.g. `array( 'edit_posts' => true, 'delete_posts' => false )`.
	 */
	private function get_caps_data() {
		$caps = get_user_meta( $this->ID, $this->cap_key, true );

		if ( ! is_array( $caps ) ) {
			return array();
		}

		return $caps;
	}
}
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