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<?php /** * I18N: WP_Translation_Controller class. * * @package WordPress * @subpackage I18N * @since 6.5.0 */ /** * Class WP_Translation_Controller. * * @since 6.5.0 */ final class WP_Translation_Controller { /** * Current locale. * * @since 6.5.0 * @var string */ protected $current_locale = 'en_US'; /** * Map of loaded translations per locale and text domain. * * [ Locale => [ Textdomain => [ ..., ... ] ] ] * * @since 6.5.0 * @var array<string, array<string, WP_Translation_File[]>> */ protected $loaded_translations = array(); /** * List of loaded translation files. * * [ Filename => [ Locale => [ Textdomain => WP_Translation_File ] ] ] * * @since 6.5.0 * @var array<string, array<string, array<string, WP_Translation_File|false>>> */ protected $loaded_files = array(); /** * Container for the main instance of the class. * * @since 6.5.0 * @var WP_Translation_Controller|null */ private static $instance = null; /** * Utility method to retrieve the main instance of the class. * * The instance will be created if it does not exist yet. * * @since 6.5.0 * * @return WP_Translation_Controller */ public static function get_instance(): WP_Translation_Controller { if ( null === self::$instance ) { self::$instance = new self(); } return self::$instance; } /** * Returns the current locale. * * @since 6.5.0 * * @return string Locale. */ public function get_locale(): string { return $this->current_locale; } /** * Sets the current locale. * * @since 6.5.0 * * @param string $locale Locale. */ public function set_locale( string $locale ) { $this->current_locale = $locale; } /** * Loads a translation file for a given text domain. * * @since 6.5.0 * * @param string $translation_file Translation file. * @param string $textdomain Optional. Text domain. Default 'default'. * @param string $locale Optional. Locale. Default current locale. * @return bool True on success, false otherwise. */ public function load_file( string $translation_file, string $textdomain = 'default', ?string $locale = null ): bool { if ( null === $locale ) { $locale = $this->current_locale; } $translation_file = realpath( $translation_file ); if ( false === $translation_file ) { return false; } if ( isset( $this->loaded_files[ $translation_file ][ $locale ][ $textdomain ] ) && false !== $this->loaded_files[ $translation_file ][ $locale ][ $textdomain ] ) { return null === $this->loaded_files[ $translation_file ][ $locale ][ $textdomain ]->error(); } if ( isset( $this->loaded_files[ $translation_file ][ $locale ] ) && array() !== $this->loaded_files[ $translation_file ][ $locale ] ) { $moe = reset( $this->loaded_files[ $translation_file ][ $locale ] ); } else { $moe = WP_Translation_File::create( $translation_file ); if ( false === $moe || null !== $moe->error() ) { $moe = false; } } $this->loaded_files[ $translation_file ][ $locale ][ $textdomain ] = $moe; if ( ! $moe instanceof WP_Translation_File ) { return false; } if ( ! isset( $this->loaded_translations[ $locale ][ $textdomain ] ) ) { $this->loaded_translations[ $locale ][ $textdomain ] = array(); } $this->loaded_translations[ $locale ][ $textdomain ][] = $moe; return true; } /** * Unloads a translation file for a given text domain. * * @since 6.5.0 * * @param WP_Translation_File|string $file Translation file instance or file name. * @param string $textdomain Optional. Text domain. Default 'default'. * @param string $locale Optional. Locale. Defaults to all locales. * @return bool True on success, false otherwise. */ public function unload_file( $file, string $textdomain = 'default', ?string $locale = null ): bool { if ( is_string( $file ) ) { $file = realpath( $file ); } if ( null !== $locale ) { if ( isset( $this->loaded_translations[ $locale ][ $textdomain ] ) ) { foreach ( $this->loaded_translations[ $locale ][ $textdomain ] as $i => $moe ) { if ( $file === $moe || $file === $moe->get_file() ) { unset( $this->loaded_translations[ $locale ][ $textdomain ][ $i ] ); unset( $this->loaded_files[ $moe->get_file() ][ $locale ][ $textdomain ] ); return true; } } } return true; } foreach ( $this->loaded_translations as $l => $domains ) { if ( ! isset( $domains[ $textdomain ] ) ) { continue; } foreach ( $domains[ $textdomain ] as $i => $moe ) { if ( $file === $moe || $file === $moe->get_file() ) { unset( $this->loaded_translations[ $l ][ $textdomain ][ $i ] ); unset( $this->loaded_files[ $moe->get_file() ][ $l ][ $textdomain ] ); return true; } } } return false; } /** * Unloads all translation files for a given text domain. * * @since 6.5.0 * * @param string $textdomain Optional. Text domain. Default 'default'. * @param string $locale Optional. Locale. Defaults to all locales. * @return bool True on success, false otherwise. */ public function unload_textdomain( string $textdomain = 'default', ?string $locale = null ): bool { $unloaded = false; if ( null !== $locale ) { if ( isset( $this->loaded_translations[ $locale ][ $textdomain ] ) ) { $unloaded = true; foreach ( $this->loaded_translations[ $locale ][ $textdomain ] as $moe ) { unset( $this->loaded_files[ $moe->get_file() ][ $locale ][ $textdomain ] ); } } unset( $this->loaded_translations[ $locale ][ $textdomain ] ); return $unloaded; } foreach ( $this->loaded_translations as $l => $domains ) { if ( ! isset( $domains[ $textdomain ] ) ) { continue; } $unloaded = true; foreach ( $domains[ $textdomain ] as $moe ) { unset( $this->loaded_files[ $moe->get_file() ][ $l ][ $textdomain ] ); } unset( $this->loaded_translations[ $l ][ $textdomain ] ); } return $unloaded; } /** * Determines whether translations are loaded for a given text domain. * * @since 6.5.0 * * @param string $textdomain Optional. Text domain. Default 'default'. * @param string $locale Optional. Locale. Default current locale. * @return bool True if there are any loaded translations, false otherwise. */ public function is_textdomain_loaded( string $textdomain = 'default', ?string $locale = null ): bool { if ( null === $locale ) { $locale = $this->current_locale; } return isset( $this->loaded_translations[ $locale ][ $textdomain ] ) && array() !== $this->loaded_translations[ $locale ][ $textdomain ]; } /** * Translates a singular string. * * @since 6.5.0 * * @param string $text Text to translate. * @param string $context Optional. Context for the string. Default empty string. * @param string $textdomain Optional. Text domain. Default 'default'. * @param string $locale Optional. Locale. Default current locale. * @return string|false Translation on success, false otherwise. */ public function translate( string $text, string $context = '', string $textdomain = 'default', ?string $locale = null ) { if ( '' !== $context ) { $context .= "\4"; } $translation = $this->locate_translation( "{$context}{$text}", $textdomain, $locale ); if ( false === $translation ) { return false; } return $translation['entries'][0]; } /** * Translates plurals. * * Checks both singular+plural combinations as well as just singulars, * in case the translation file does not store the plural. * * @since 6.5.0 * * @param array $plurals { * Pair of singular and plural translations. * * @type string $0 Singular translation. * @type string $1 Plural translation. * } * @param int $number Number of items. * @param string $context Optional. Context for the string. Default empty string. * @param string $textdomain Optional. Text domain. Default 'default'. * @param string|null $locale Optional. Locale. Default current locale. * @return string|false Translation on success, false otherwise. */ public function translate_plural( array $plurals, int $number, string $context = '', string $textdomain = 'default', ?string $locale = null ) { if ( '' !== $context ) { $context .= "\4"; } $text = implode( "\0", $plurals ); $translation = $this->locate_translation( "{$context}{$text}", $textdomain, $locale ); if ( false === $translation ) { $text = $plurals[0]; $translation = $this->locate_translation( "{$context}{$text}", $textdomain, $locale ); if ( false === $translation ) { return false; } } /** @var WP_Translation_File $source */ $source = $translation['source']; $num = $source->get_plural_form( $number ); // See \Translations::translate_plural(). return $translation['entries'][ $num ] ?? $translation['entries'][0]; } /** * Returns all existing headers for a given text domain. * * @since 6.5.0 * * @param string $textdomain Optional. Text domain. Default 'default'. * @return array<string, string> Headers. */ public function get_headers( string $textdomain = 'default' ): array { if ( array() === $this->loaded_translations ) { return array(); } $headers = array(); foreach ( $this->get_files( $textdomain ) as $moe ) { foreach ( $moe->headers() as $header => $value ) { $headers[ $this->normalize_header( $header ) ] = $value; } } return $headers; } /** * Normalizes header names to be capitalized. * * @since 6.5.0 * * @param string $header Header name. * @return string Normalized header name. */ protected function normalize_header( string $header ): string { $parts = explode( '-', $header ); $parts = array_map( 'ucfirst', $parts ); return implode( '-', $parts ); } /** * Returns all entries for a given text domain. * * @since 6.5.0 * * @param string $textdomain Optional. Text domain. Default 'default'. * @return array<string, string> Entries. */ public function get_entries( string $textdomain = 'default' ): array { if ( array() === $this->loaded_translations ) { return array(); } $entries = array(); foreach ( $this->get_files( $textdomain ) as $moe ) { $entries = array_merge( $entries, $moe->entries() ); } return $entries; } /** * Locates translation for a given string and text domain. * * @since 6.5.0 * * @param string $singular Singular translation. * @param string $textdomain Optional. Text domain. Default 'default'. * @param string $locale Optional. Locale. Default current locale. * @return array{source: WP_Translation_File, entries: string[]}|false { * Translations on success, false otherwise. * * @type WP_Translation_File $source Translation file instance. * @type string[] $entries Array of translation entries. * } */ protected function locate_translation( string $singular, string $textdomain = 'default', ?string $locale = null ) { if ( array() === $this->loaded_translations ) { return false; } // Find the translation in all loaded files for this text domain. foreach ( $this->get_files( $textdomain, $locale ) as $moe ) { $translation = $moe->translate( $singular ); if ( false !== $translation ) { return array( 'entries' => explode( "\0", $translation ), 'source' => $moe, ); } if ( null !== $moe->error() ) { // Unload this file, something is wrong. $this->unload_file( $moe, $textdomain, $locale ); } } // Nothing could be found. return false; } /** * Returns all translation files for a given text domain. * * @since 6.5.0 * * @param string $textdomain Optional. Text domain. Default 'default'. * @param string $locale Optional. Locale. Default current locale. * @return WP_Translation_File[] List of translation files. */ protected function get_files( string $textdomain = 'default', ?string $locale = null ): array { if ( null === $locale ) { $locale = $this->current_locale; } return $this->loaded_translations[ $locale ][ $textdomain ] ?? array(); } /** * Returns a boolean to indicate whether a translation exists for a given string with optional text domain and locale. * * @since 6.7.0 * * @param string $singular Singular translation to check. * @param string $textdomain Optional. Text domain. Default 'default'. * @param ?string $locale Optional. Locale. Default current locale. * @return bool True if the translation exists, false otherwise. */ public function has_translation( string $singular, string $textdomain = 'default', ?string $locale = null ): bool { if ( null === $locale ) { $locale = $this->current_locale; } return false !== $this->locate_translation( $singular, $textdomain, $locale ); } }
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