<?php
/**
- * @file src/Core/L10n.php
+ * @copyright Copyright (C) 2010-2022, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
*/
+
namespace Friendica\Core;
-use Friendica\Core\L10n\L10n as L10nClass;
+use Friendica\Core\Config\Capability\IManageConfigValues;
+use Friendica\Core\Session\Capability\IHandleSessions;
+use Friendica\Database\Database;
+use Friendica\Util\Strings;
/**
* Provide Language, Translation, and Localization functions to the application
*/
class L10n
{
+ /** @var string The default language */
+ const DEFAULT = 'en';
+ /** @var string[] The language names in their language */
+ const LANG_NAMES = [
+ 'ar' => 'العربية',
+ 'bg' => 'Български',
+ 'ca' => 'Català',
+ 'cs' => 'Česky',
+ 'da-dk' => 'Dansk (Danmark)',
+ 'de' => 'Deutsch',
+ 'en-gb' => 'English (United Kingdom)',
+ 'en-us' => 'English (United States)',
+ 'en' => 'English (Default)',
+ 'eo' => 'Esperanto',
+ 'es' => 'Español',
+ 'et' => 'Eesti',
+ 'fi-fi' => 'Suomi',
+ 'fr' => 'Français',
+ 'gd' => 'Gàidhlig',
+ 'hu' => 'Magyar',
+ 'is' => 'Íslenska',
+ 'it' => 'Italiano',
+ 'ja' => '日本語',
+ 'nb-no' => 'Norsk bokmål',
+ 'nl' => 'Nederlands',
+ 'pl' => 'Polski',
+ 'pt-br' => 'Português Brasileiro',
+ 'ro' => 'Română',
+ 'ru' => 'Русский',
+ 'sv' => 'Svenska',
+ 'zh-cn' => '简体中文',
+ ];
+
/**
- * @var L10nClass
+ * A string indicating the current language used for translation:
+ * - Two-letter ISO 639-1 code.
+ * - Two-letter ISO 639-1 code + dash + Two-letter ISO 3166-1 alpha-2 country code.
+ *
+ * @var string
*/
- private static $l10n;
+ private $lang = '';
/**
- * Initializes the L10n static wrapper with the instance
+ * An array of translation strings whose key is the neutral english message.
*
- * @param L10nClass $l10n The l10n class
+ * @var array
*/
- public static function init(L10nClass $l10n)
+ private $strings = [];
+
+ /**
+ * @var Database
+ */
+ private $dba;
+
+ public function __construct(IManageConfigValues $config, Database $dba, IHandleSessions $session, array $server, array $get)
{
- self::$l10n = $l10n;
+ $this->dba = $dba;
+
+ $this->loadTranslationTable(L10n::detectLanguage($server, $get, $config->get('system', 'language', self::DEFAULT)));
+ $this->setSessionVariable($session);
+ $this->setLangFromSession($session);
}
/**
*
* @return string Language code
*/
- public static function getCurrentLang()
+ public function getCurrentLang()
+ {
+ return $this->lang;
+ }
+
+ /**
+ * Sets the language session variable
+ */
+ private function setSessionVariable(IHandleSessions $session)
+ {
+ if ($session->get('authenticated') && !$session->get('language')) {
+ $session->set('language', $this->lang);
+ // we haven't loaded user data yet, but we need user language
+ if ($session->get('uid')) {
+ $user = $this->dba->selectFirst('user', ['language'], ['uid' => $_SESSION['uid']]);
+ if ($this->dba->isResult($user)) {
+ $session->set('language', $user['language']);
+ }
+ }
+ }
+
+ if (isset($_GET['lang'])) {
+ $session->set('language', $_GET['lang']);
+ }
+ }
+
+ private function setLangFromSession(IHandleSessions $session)
{
- return self::$l10n->getCurrentLang();
+ if ($session->get('language') !== $this->lang) {
+ $this->loadTranslationTable($session->get('language') ?? $this->lang);
+ }
}
/**
- * This function should be called before formatting messages in a specific target language
- * different from the current user/system language.
+ * Loads string translation table
*
- * It saves the current translation strings in a separate variable and loads new translations strings.
+ * First addon strings are loaded, then globals
*
- * If called repeatedly, it won't save the translation strings again, just load the new ones.
+ * Uses an App object shim since all the strings files refer to $a->strings
*
- * @see popLang()
- * @brief Stores the current language strings and load a different language.
- * @param string $lang Language code
+ * @param string $lang language code to load
+ * @return void
* @throws \Exception
*/
- public static function pushLang($lang)
+ private function loadTranslationTable(string $lang)
{
- self::$l10n->pushLang($lang);
+ $lang = Strings::sanitizeFilePathItem($lang);
+
+ // Don't override the language setting with empty languages
+ if (empty($lang)) {
+ return;
+ }
+
+ $a = new \stdClass();
+ $a->strings = [];
+
+ // load enabled addons strings
+ $addons = $this->dba->select('addon', ['name'], ['installed' => true]);
+ while ($p = $this->dba->fetch($addons)) {
+ $name = Strings::sanitizeFilePathItem($p['name']);
+ if (file_exists(__DIR__ . "/../../addon/$name/lang/$lang/strings.php")) {
+ include __DIR__ . "/../../addon/$name/lang/$lang/strings.php";
+ }
+ }
+
+ if (file_exists(__DIR__ . "/../../view/lang/$lang/strings.php")) {
+ include __DIR__ . "/../../view/lang/$lang/strings.php";
+ }
+
+ $this->lang = $lang;
+ $this->strings = $a->strings;
+
+ unset($a);
}
/**
- * Restores the original user/system language after having used pushLang()
+ * Returns the preferred language from the HTTP_ACCEPT_LANGUAGE header
+ *
+ * @param string $sysLang The default fallback language
+ * @param array $server The $_SERVER array
+ * @param array $get The $_GET array
+ *
+ * @return string The two-letter language code
*/
- public static function popLang()
+ public static function detectLanguage(array $server, array $get, string $sysLang = self::DEFAULT): string
{
- self::$l10n->popLang();
+ $lang_variable = $server['HTTP_ACCEPT_LANGUAGE'] ?? null;
+
+ if (empty($lang_variable)) {
+ $acceptedLanguages = [];
+ } else {
+ $acceptedLanguages = preg_split('/,\s*/', $lang_variable);
+ }
+
+ // Add get as absolute quality accepted language (except this language isn't valid)
+ if (!empty($get['lang'])) {
+ $acceptedLanguages[] = $get['lang'];
+ }
+
+ // return the sys language in case there's nothing to do
+ if (empty($acceptedLanguages)) {
+ return $sysLang;
+ }
+
+ // Set the syslang as default fallback
+ $current_lang = $sysLang;
+ // start with quality zero (every guessed language is more acceptable ..)
+ $current_q = 0;
+
+ foreach ($acceptedLanguages as $acceptedLanguage) {
+ $res = preg_match(
+ '/^([a-z]{1,8}(?:-[a-z]{1,8})*)(?:;\s*q=(0(?:\.[0-9]{1,3})?|1(?:\.0{1,3})?))?$/i',
+ $acceptedLanguage,
+ $matches
+ );
+
+ // Invalid language? -> skip
+ if (!$res) {
+ continue;
+ }
+
+ // split language codes based on it's "-"
+ $lang_code = explode('-', $matches[1]);
+
+ // determine the quality of the guess
+ if (isset($matches[2])) {
+ $lang_quality = (float)$matches[2];
+ } else {
+ // fallback so without a quality parameter, it's probably the best
+ $lang_quality = 1;
+ }
+
+ // loop through each part of the code-parts
+ while (count($lang_code)) {
+ // try to mix them so we can get double-code parts too
+ $match_lang = strtolower(join('-', $lang_code));
+ if (file_exists(__DIR__ . "/../../view/lang/$match_lang") &&
+ is_dir(__DIR__ . "/../../view/lang/$match_lang")) {
+ if ($lang_quality > $current_q) {
+ $current_lang = $match_lang;
+ $current_q = $lang_quality;
+ break;
+ }
+ }
+
+ // remove the most right code-part
+ array_pop($lang_code);
+ }
+ }
+
+ return $current_lang;
}
/**
- * @brief Return the localized version of the provided string with optional string interpolation
+ * Return the localized version of the provided string with optional string interpolation
*
* This function takes a english string as parameter, and if a localized version
* exists for the current language, substitutes it before performing an eventual
* string interpolation (sprintf) with additional optional arguments.
*
* Usages:
- * - L10n::t('This is an example')
- * - L10n::t('URL %s returned no result', $url)
- * - L10n::t('Current version: %s, new version: %s', $current_version, $new_version)
+ * - DI::l10n()->t('This is an example')
+ * - DI::l10n()->t('URL %s returned no result', $url)
+ * - DI::l10n()->t('Current version: %s, new version: %s', $current_version, $new_version)
*
* @param string $s
* @param array $vars Variables to interpolate in the translation string
+ *
* @return string
*/
- public static function t($s, ...$vars)
+ public function t(string $s, ...$vars): string
{
- return self::$l10n->t($s, $vars);
+ if (empty($s)) {
+ return '';
+ }
+
+ if (!empty($this->strings[$s])) {
+ $t = $this->strings[$s];
+ $s = is_array($t) ? $t[0] : $t;
+ }
+
+ if (count($vars) > 0) {
+ $s = sprintf($s, ...$vars);
+ }
+
+ return $s;
}
/**
- * @brief Return the localized version of a singular/plural string with optional string interpolation
+ * Return the localized version of a singular/plural string with optional string interpolation
*
* This function takes two english strings as parameters, singular and plural, as
* well as a count. If a localized version exists for the current language, they
* is performed using the count as parameter.
*
* Usages:
- * - L10n::tt('Like', 'Likes', $count)
- * - L10n::tt("%s user deleted", "%s users deleted", count($users))
+ * - DI::l10n()->tt('Like', 'Likes', $count)
+ * - DI::l10n()->tt("%s user deleted", "%s users deleted", count($users))
*
* @param string $singular
* @param string $plural
* @param int $count
+ * @param array $vars Variables to interpolate in the translation string
+ *
* @return string
* @throws \Exception
*/
- public static function tt(string $singular, string $plural, int $count)
+ public function tt(string $singular, string $plural, int $count, ...$vars): string
+ {
+ $s = null;
+
+ if (!empty($this->strings[$singular])) {
+ $t = $this->strings[$singular];
+ if (is_array($t)) {
+ $plural_function = 'string_plural_select_' . str_replace('-', '_', $this->lang);
+ if (function_exists($plural_function)) {
+ $i = $plural_function($count);
+ } else {
+ $i = $this->stringPluralSelectDefault($count);
+ }
+
+ if (isset($t[$i])) {
+ $s = $t[$i];
+ } elseif (count($t) > 0) {
+ // for some languages there is only a single array item
+ $s = $t[0];
+ }
+ // if $t is empty, skip it, because empty strings array are indended
+ // to make string file smaller when there's no translation
+ } else {
+ $s = $t;
+ }
+ }
+
+ if (is_null($s) && $this->stringPluralSelectDefault($count)) {
+ $s = $plural;
+ } elseif (is_null($s)) {
+ $s = $singular;
+ }
+
+ // We mute errors here because the translation strings may not be referencing the count at all,
+ // but we still have to try the interpolation just in case it is indeed referenced.
+ $s = @sprintf($s, $count, ...$vars);
+
+ return $s;
+ }
+
+ /**
+ * Provide a fallback which will not collide with a function defined in any language file
+ *
+ * @param int $n
+ *
+ * @return bool
+ */
+ private function stringPluralSelectDefault(int $n): bool
{
- return self::$l10n->tt($singular, $plural, $count);
+ return $n != 1;
}
/**
- * @brief Return installed languages codes as associative array
+ * Return installed languages codes as associative array
*
* Scans the view/lang directory for the existence of "strings.php" files, and
* returns an alphabetical list of their folder names (@-char language codes).
- * Adds the english language if it's missing from the list.
+ * Adds the english language if it's missing from the list. Folder names are
+ * replaced by nativ language names.
*
- * Ex: array('de' => 'de', 'en' => 'en', 'fr' => 'fr', ...)
+ * Ex: array('de' => 'Deutsch', 'en' => 'English', 'fr' => 'Français', ...)
*
* @return array
*/
- public static function getAvailableLanguages()
+ public static function getAvailableLanguages(): array
{
- return self::$l10n::getAvailableLanguages();
+ $langs = [];
+ $strings_file_paths = glob('view/lang/*/strings.php');
+
+ if (is_array($strings_file_paths) && count($strings_file_paths)) {
+ if (!in_array('view/lang/en/strings.php', $strings_file_paths)) {
+ $strings_file_paths[] = 'view/lang/en/strings.php';
+ }
+ asort($strings_file_paths);
+ foreach ($strings_file_paths as $strings_file_path) {
+ $path_array = explode('/', $strings_file_path);
+ $langs[$path_array[2]] = self::LANG_NAMES[$path_array[2]] ?? $path_array[2];
+ }
+ }
+ return $langs;
}
/**
- * @brief Translate days and months names.
+ * Translate days and months names.
*
* @param string $s String with day or month name.
* @return string Translated string.
*/
- public static function getDay($s)
+ public function getDay(string $s): string
{
- return self::$l10n->getDay($s);
+ $ret = str_replace(['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'],
+ [$this->t('Monday'), $this->t('Tuesday'), $this->t('Wednesday'), $this->t('Thursday'), $this->t('Friday'), $this->t('Saturday'), $this->t('Sunday')],
+ $s);
+
+ $ret = str_replace(['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
+ [$this->t('January'), $this->t('February'), $this->t('March'), $this->t('April'), $this->t('May'), $this->t('June'), $this->t('July'), $this->t('August'), $this->t('September'), $this->t('October'), $this->t('November'), $this->t('December')],
+ $ret);
+
+ return $ret;
}
/**
- * @brief Translate short days and months names.
+ * Translate short days and months names.
*
* @param string $s String with short day or month name.
* @return string Translated string.
*/
- public static function getDayShort($s)
+ public function getDayShort(string $s): string
{
- return self::$l10n->getDayShort($s);
+ $ret = str_replace(['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
+ [$this->t('Mon'), $this->t('Tue'), $this->t('Wed'), $this->t('Thu'), $this->t('Fri'), $this->t('Sat'), $this->t('Sun')],
+ $s);
+
+ $ret = str_replace(['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
+ [$this->t('Jan'), $this->t('Feb'), $this->t('Mar'), $this->t('Apr'), $this->t('May'), $this->t('Jun'), $this->t('Jul'), $this->t('Aug'), $this->t('Sep'), $this->t('Oct'), $this->t('Nov'), $this->t('Dec')],
+ $ret);
+
+ return $ret;
+ }
+
+ /**
+ * Creates a new L10n instance based on the given langauge
+ *
+ * @param string $lang The new language
+ *
+ * @return static A new L10n instance
+ * @throws \Exception
+ */
+ public function withLang(string $lang): L10n
+ {
+ // Don't create a new instance for same language
+ if ($lang === $this->lang) {
+ return $this;
+ }
+
+ $newL10n = clone $this;
+ $newL10n->loadTranslationTable($lang);
+ return $newL10n;
}
}
projects / friendica.git / blobdiff