ru-se.com

l10n.php (56738B)

---

 <?php
 /**
  * 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_id User's ID or a WP_User object. Defaults to current user.
  * @return string The locale of the user.
  */
 function get_user_locale( $user_id = 0 ) {
 	$user = false;
 	if ( 0 === $user_id && function_exists( 'wp_get_current_user' ) ) {
 		$user = wp_get_current_user();
 	} elseif ( $user_id instanceof WP_User ) {
 		$user = $user_id;
 	} elseif ( $user_id && is_numeric( $user_id ) ) {
 		$user = get_user_by( 'id', $user_id );
 	}
 
 	if ( ! $user ) {
 		return get_locale();
 	}
 
 	$locale = $user->locale;
 	return $locale ? $locale : get_locale();
 }
 
 /**
  * Determine the current locale desired for the request.
  *
  * @since 5.0.0
  *
  * @global string $pagenow
  *
  * @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 ( ! empty( $determined_locale ) && is_string( $determined_locale ) ) {
 		return $determined_locale;
 	}
 
 	$determined_locale = get_locale();
 
 	if ( is_admin() ) {
 		$determined_locale = get_user_locale();
 	}
 
 	if ( isset( $_GET['_locale'] ) && 'user' === $_GET['_locale'] && wp_is_json_request() ) {
 		$determined_locale = get_user_locale();
 	}
 
 	if ( ! empty( $_GET['wp_lang'] ) && ! empty( $GLOBALS['pagenow'] ) && 'wp-login.php' === $GLOBALS['pagenow'] ) {
 		$determined_locale = sanitize_text_field( $_GET['wp_lang'] );
 	}
 
 	/**
 	 * Filters the locale for the current request.
 	 *
 	 * @since 5.0.0
 	 *
 	 * @param string $locale The locale.
 	 */
 	return apply_filters( 'determine_locale', $determined_locale );
 }
 
 /**
  * Retrieve 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, `$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;
 }
 
 /**
  * Remove 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 $string A pipe-delimited string.
  * @return string Either $string or everything before the last pipe.
  */
 function before_last_bar( $string ) {
 	$last_bar = strrpos( $string, '|' );
 	if ( false === $last_bar ) {
 		return $string;
 	} else {
 		return substr( $string, 0, $last_bar );
 	}
 }
 
 /**
  * Retrieve 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, `$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;
 }
 
 /**
  * Retrieve 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 );
 }
 
 /**
  * Retrieve 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 ) );
 }
 
 /**
  * Retrieve 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 ) );
 }
 
 /**
  * Display 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 );
 }
 
 /**
  * Display 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 ) );
 }
 
 /**
  * Display 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 ) );
 }
 
 /**
  * Retrieve 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 );
 }
 
 /**
  * Display 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'.
  * @return string Translated context string without pipe.
  */
 function _ex( $text, $context, $domain = 'default' ) {
 	echo _x( $text, $context, $domain );
 }
 
 /**
  * Translate 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 ) );
 }
 
 /**
  * Translate 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 string $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, `$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 string $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 string $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, `$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 string $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 $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 $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 retrieves 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 with singular, plural, and context keys, usually the result of _n_noop() or _nx_noop().
  * @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 $single 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 );
 	}
 }
 
 /**
  * Load 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
  *
  * @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 string $mofile Path to the .mo file.
  * @return bool True on success, false on failure.
  */
 function load_textdomain( $domain, $mofile ) {
 	global $l10n, $l10n_unloaded;
 
 	$l10n_unloaded = (array) $l10n_unloaded;
 
 	/**
 	 * Filters whether to override the .mo file loading.
 	 *
 	 * @since 2.9.0
 	 *
 	 * @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.
 	 */
 	$plugin_override = apply_filters( 'override_load_textdomain', false, $domain, $mofile );
 
 	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 ( ! is_readable( $mofile ) ) {
 		return false;
 	}
 
 	$mo = new MO();
 	if ( ! $mo->import_from_file( $mofile ) ) {
 		return false;
 	}
 
 	if ( isset( $l10n[ $domain ] ) ) {
 		$mo->merge_with( $l10n[ $domain ] );
 	}
 
 	unset( $l10n_unloaded[ $domain ] );
 
 	$l10n[ $domain ] = &$mo;
 
 	return true;
 }
 
 /**
  * Unload translations for a text domain.
  *
  * @since 3.0.0
  *
  * @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.
  * @return bool Whether textdomain was unloaded.
  */
 function unload_textdomain( $domain ) {
 	global $l10n, $l10n_unloaded;
 
 	$l10n_unloaded = (array) $l10n_unloaded;
 
 	/**
 	 * Filters whether to override the text domain unloading.
 	 *
 	 * @since 3.0.0
 	 *
 	 * @param bool   $override Whether to override the text domain unloading. Default false.
 	 * @param string $domain   Text domain. Unique identifier for retrieving translated strings.
 	 */
 	$plugin_override = apply_filters( 'override_unload_textdomain', false, $domain );
 
 	if ( $plugin_override ) {
 		$l10n_unloaded[ $domain ] = true;
 
 		return true;
 	}
 
 	/**
 	 * Fires before the text domain is unloaded.
 	 *
 	 * @since 3.0.0
 	 *
 	 * @param string $domain Text domain. Unique identifier for retrieving translated strings.
 	 */
 	do_action( 'unload_textdomain', $domain );
 
 	if ( isset( $l10n[ $domain ] ) ) {
 		unset( $l10n[ $domain ] );
 
 		$l10n_unloaded[ $domain ] = true;
 
 		return true;
 	}
 
 	return false;
 }
 
 /**
  * Load 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' );
 
 	$return = load_textdomain( 'default', WP_LANG_DIR . "/$locale.mo" );
 
 	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" );
 		return $return;
 	}
 
 	if ( is_admin() || wp_installing() || ( defined( 'WP_REPAIRING' ) && WP_REPAIRING ) ) {
 		load_textdomain( 'default', WP_LANG_DIR . "/admin-$locale.mo" );
 	}
 
 	if ( is_network_admin() || ( defined( 'WP_INSTALLING_NETWORK' ) && WP_INSTALLING_NETWORK ) ) {
 		load_textdomain( 'default', WP_LANG_DIR . "/admin-network-$locale.mo" );
 	}
 
 	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 ) {
 	/**
 	 * 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 ) ) {
 		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;
 	}
 
 	return load_textdomain( $domain, $path . '/' . $mofile );
 }
 
 /**
  * Load 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.
  *
  * @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 = '' ) {
 	/** 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 ) ) {
 		return true;
 	}
 
 	$path = WPMU_PLUGIN_DIR . '/' . ltrim( $mu_plugin_rel_path, '/' );
 
 	return load_textdomain( $domain, $path . '/' . $mofile );
 }
 
 /**
  * Load 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.
  *
  * @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 ) {
 	/**
 	 * 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 ) ) {
 		return true;
 	}
 
 	if ( ! $path ) {
 		$path = get_template_directory();
 	}
 
 	return load_textdomain( $domain, $path . '/' . $locale . '.mo' );
 }
 
 /**
  * Load the child themes translated strings.
  *
  * If the current locale exists as a .mo file in the child themes
  * 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 = null ) {
 	$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 && 0 === strpos( $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'] ) || strpos( $src_url['path'], $content_url['path'] ) === 0 ) &&
 		( ! 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'] ) || strpos( $src_url['path'], $plugins_url['path'] ) === 0 ) &&
 		( ! 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 ( ( strpos( $src_url['path'], trailingslashit( $site_url['path'] ) ) === 0 ) ) {
 			// 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 ( substr( $relative, -7 ) === '.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 textdomains 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_texdomain() or load_theme_texdomain().
  *
  * @since 4.6.0
  * @access private
  *
  * @see get_translations_for_domain()
  * @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.
  * @return bool True when the textdomain is successfully loaded, false otherwise.
  */
 function _load_textdomain_just_in_time( $domain ) {
 	global $l10n_unloaded;
 
 	$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;
 	}
 
 	$translation_path = _get_path_to_translation( $domain );
 	if ( false === $translation_path ) {
 		return false;
 	}
 
 	return load_textdomain( $domain, $translation_path );
 }
 
 /**
  * Gets the path to a translation file for loading a textdomain just in time.
  *
  * Caches the retrieved results internally.
  *
  * @since 4.7.0
  * @access private
  *
  * @see _load_textdomain_just_in_time()
  *
  * @param string $domain Text domain. Unique identifier for retrieving translated strings.
  * @param bool   $reset  Whether to reset the internal cache. Used by the switch to locale functionality.
  * @return string|false The path to the translation file or false if no translation file was found.
  */
 function _get_path_to_translation( $domain, $reset = false ) {
 	static $available_translations = array();
 
 	if ( true === $reset ) {
 		$available_translations = array();
 	}
 
 	if ( ! isset( $available_translations[ $domain ] ) ) {
 		$available_translations[ $domain ] = _get_path_to_translation_from_lang_dir( $domain );
 	}
 
 	return $available_translations[ $domain ];
 }
 
 /**
  * Gets the path to a translation file in the languages directory for the current locale.
  *
  * Holds a cached list of available .mo files to improve performance.
  *
  * @since 4.7.0
  * @access private
  *
  * @see _get_path_to_translation()
  *
  * @param string $domain Text domain. Unique identifier for retrieving translated strings.
  * @return string|false The path to the translation file or false if no translation file was found.
  */
 function _get_path_to_translation_from_lang_dir( $domain ) {
 	static $cached_mofiles = null;
 
 	if ( null === $cached_mofiles ) {
 		$cached_mofiles = array();
 
 		$locations = array(
 			WP_LANG_DIR . '/plugins',
 			WP_LANG_DIR . '/themes',
 		);
 
 		foreach ( $locations as $location ) {
 			$mofiles = glob( $location . '/*.mo' );
 			if ( $mofiles ) {
 				$cached_mofiles = array_merge( $cached_mofiles, $mofiles );
 			}
 		}
 	}
 
 	$locale = determine_locale();
 	$mofile = "{$domain}-{$locale}.mo";
 
 	$path = WP_LANG_DIR . '/plugins/' . $mofile;
 	if ( in_array( $path, $cached_mofiles, true ) ) {
 		return $path;
 	}
 
 	$path = WP_LANG_DIR . '/themes/' . $mofile;
 	if ( in_array( $path, $cached_mofiles, true ) ) {
 		return $path;
 	}
 
 	return false;
 }
 
 /**
  * Return the Translations instance for a text domain.
  *
  * If there isn't one, returns empty Translations instance.
  *
  * @since 2.8.0
  *
  * @global MO[] $l10n
  *
  * @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;
 	}
 
 	return $noop_translations;
 }
 
 /**
  * Whether there are translations for the text domain.
  *
  * @since 3.0.0
  *
  * @global MO[] $l10n
  *
  * @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 ] );
 }
 
 /**
  * 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 );
 }
 
 /**
  * Get all available languages based on the presence of *.mo 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.
  *
  * @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 .mo extension from the language file names.
  */
 function get_available_languages( $dir = null ) {
 	$languages = array();
 
 	$lang_files = glob( ( is_null( $dir ) ? WP_LANG_DIR : $dir ) . '/*.mo' );
 	if ( $lang_files ) {
 		foreach ( $lang_files as $lang_file ) {
 			$lang_file = basename( $lang_file, '.mo' );
 			if ( 0 !== strpos( $lang_file, 'continents-cities' ) && 0 !== strpos( $lang_file, 'ms-' ) &&
 				0 !== strpos( $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', $languages, $dir );
 }
 
 /**
  * Get 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 ( substr( $file, -3 ) !== '.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;
 }
 
 /**
  * Extract 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;
 }
 
 /**
  * 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.
  *
  * @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 array    $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.
  * }
  * @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,
 		)
 	);
 
 	// 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['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'] ) {
 		$structure[] = sprintf(
 			'<option value="" lang="en" data-installed="1"%s>English (United States)</option>',
 			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;
 
 	return $wp_locale_switcher->switch_to_locale( $locale );
 }
 
 /**
  * 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;
 
 	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;
 
 	return $wp_locale_switcher->restore_current_locale();
 }
 
 /**
  * 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();
 }