<?php /** * Loads text domain of current or default language for localization. * * @filesource * @author Stefan Herndler * @since 1.5.0 14.09.14 17:47 * * * @lastmodified 2021-02-18T2028+0100 * * @since 2.0.0 Bugfix: Localization: correct function call apply_filters() with all required arguments after PHP 7.1 promoted warning to error, thanks to @matkus2 bug report and code contribution. * @since 2.1.6 Bugfix: Localization: conform to WordPress plugin language file name scheme, thanks to @nikelaos bug report. */ /** * Loads text domain of current or default language for localization. * * @author Stefan Herndler * @since 1.5.0 */ class MCI_Footnotes_Language { /** * Register WordPress Hook. * * @author Stefan Herndler * @since 1.5.0 */ public static function registerHooks() { add_action('plugins_loaded', array("MCI_Footnotes_Language", "loadTextDomain")); } /** * Loads the text domain for current WordPress language if exists. * Otherwise fallback "en_GB" will be loaded. * * @author Stefan Herndler * @since 1.5.0 * * * - Bugfix: Correct function call apply_filters() with all required arguments after PHP 7.1 promoted warning to error, thanks to @matkus2 bug report and code contribution. * * @since 2.0.0 * @date 2020-10-26T1609+0100 * * @contributor @matkus2 * @link https://wordpress.org/support/topic/error-missing-parameter-if-using-php-7-1-or-later/ * * Add 3rd (empty) argument in apply_filters() to prevent PHP from throwing an error: * “Fatal error: Uncaught ArgumentCountError: Too few arguments to function apply_filters()” * * Yet get_locale() is defined w/o parameters in wp-includes/l10n.php:30, and * apply_filters() is defined as apply_filters( $tag, $value ) in wp-includes/plugin.php:181. * @link https://developer.wordpress.org/reference/functions/apply_filters/ * * But apply_filters() is defined with a 3rd parameter (and w/o the first one) in * wp-includes/class-wp-hook.php:264, as public function apply_filters( $value, $args ). * * Taking it all together, probably the full function definition would be: * public function apply_filters( $tag, $value, $args ). * In the case of get_locale(), $args is empty. * * The bug was lurking in WP. PHP 7.1 promoted the warning to an error. * @link https://www.php.net/manual/en/migration71.incompatible.php * @link https://www.php.net/manual/en/migration71.incompatible.php#migration71.incompatible.too-few-arguments-exception */ public static function loadTextDomain() { // if language file with localization exists: if ( self::load( apply_filters( 'plugin_locale', get_locale(), '' ) ) ) { return; } // else fall back to British English: self::load( "en_GB" ); } /** * Loads a specific text domain. * * @author Stefan Herndler * @since 1.5.1 * @param string $p_str_LanguageCode Language Code to load a specific text domain. * @return bool * * * - Bugfix: Localization: conform to WordPress plugin language file name scheme, thanks to @nikelaos bug report. * * @since 2.1.6 * @date 2020-12-08T1931+0100 * * @reporter @nikelaos * @link https://wordpress.org/support/topic/more-feature-ideas/ * * That is done by using load_plugin_textdomain(): * “The .mo file should be named based on the text domain with a dash, and then the locale exactly.” * @see wp-includes/l10n.php:857 */ private static function load($p_str_LanguageCode) { return load_plugin_textdomain( MCI_Footnotes_Config::C_STR_PLUGIN_NAME, // This argument only fills the gap left by a deprecated argument (since WP2.7): false, // The plugin basedir is provided; trailing slash would be clipped: MCI_Footnotes_Config::C_STR_PLUGIN_NAME . '/languages' ); } }