Fix browser language detection (& tests)
This commit is contained in:
Philipp Holzer
parent
e72402389d
commit
a522cf609b
3 changed files with 173 additions and 38 deletions
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@ -53,12 +53,12 @@ class L10n
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*/
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private $logger;
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public function __construct(Configuration $config, Database $dba, LoggerInterface $logger)
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public function __construct(Configuration $config, Database $dba, LoggerInterface $logger, array $server, array $get)
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{
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$this->dba = $dba;
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$this->logger = $logger;
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$this->loadTranslationTable(L10n::detectLanguage($config->get('system', 'language', 'en')));
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$this->loadTranslationTable(L10n::detectLanguage($server, $get, $config->get('system', 'language', 'en')));
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}
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/**
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@ -158,6 +158,11 @@ class L10n
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{
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$lang = Strings::sanitizeFilePathItem($lang);
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// Don't override the language setting with empty languages
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if (empty($lang)) {
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return;
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}
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$a = new \stdClass();
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$a->strings = [];
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@ -166,12 +171,12 @@ class L10n
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while ($p = $this->dba->fetch($addons)) {
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$name = Strings::sanitizeFilePathItem($p['name']);
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if (file_exists("addon/$name/lang/$lang/strings.php")) {
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include "addon/$name/lang/$lang/strings.php";
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include __DIR__ . "/../../../addon/$name/lang/$lang/strings.php";
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}
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}
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if (file_exists("view/lang/$lang/strings.php")) {
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include "view/lang/$lang/strings.php";
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if (file_exists(__DIR__ . "/../../../view/lang/$lang/strings.php")) {
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include __DIR__ . "/../../../view/lang/$lang/strings.php";
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}
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$this->lang = $lang;
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@ -184,49 +189,78 @@ class L10n
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* @brief Returns the preferred language from the HTTP_ACCEPT_LANGUAGE header
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*
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* @param string $sysLang The default fallback language
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* @param array $server The $_SERVER array
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* @param array $get The $_GET array
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*
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* @return string The two-letter language code
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*/
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public static function detectLanguage(string $sysLang = 'en')
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public static function detectLanguage(array $server, array $get, string $sysLang = 'en')
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{
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$lang_list = [];
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$lang_variable = $server['HTTP_ACCEPT_LANGUAGE'] ?? null;
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if (!empty($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
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// break up string into pieces (languages and q factors)
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preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_parse);
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$acceptedLanguages = preg_split('/,\s*/', $lang_variable);
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if (count($lang_parse[1])) {
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// go through the list of prefered languages and add a generic language
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// for sub-linguas (e.g. de-ch will add de) if not already in array
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for ($i = 0; $i < count($lang_parse[1]); $i++) {
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$lang_list[] = strtolower($lang_parse[1][$i]);
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if (strlen($lang_parse[1][$i]) > 3) {
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$dashpos = strpos($lang_parse[1][$i], '-');
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if (!in_array(substr($lang_parse[1][$i], 0, $dashpos), $lang_list)) {
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$lang_list[] = strtolower(substr($lang_parse[1][$i], 0, $dashpos));
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}
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}
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}
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}
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if (empty($acceptedLanguages)) {
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$acceptedLanguages = [];
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}
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if (isset($_GET['lang'])) {
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$lang_list = [$_GET['lang']];
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// Add get as absolute quality accepted language (except this language isn't valid)
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if (!empty($get['lang'])) {
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$acceptedLanguages[] = $get['lang'];
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}
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// check if we have translations for the preferred languages and pick the 1st that has
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foreach ($lang_list as $lang) {
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if ($lang === 'en' || (file_exists("view/lang/$lang") && is_dir("view/lang/$lang"))) {
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$preferred = $lang;
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// return the sys language in case there's nothing to do
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if (empty($acceptedLanguages)) {
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return $sysLang;
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}
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// Set the syslang as default fallback
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$current_lang = $sysLang;
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// start with quality zero (every guessed language is more acceptable ..)
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$current_q = 0;
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foreach ($acceptedLanguages as $acceptedLanguage) {
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$res = preg_match(
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'/^([a-z]{1,8}(?:-[a-z]{1,8})*)(?:;\s*q=(0(?:\.[0-9]{1,3})?|1(?:\.0{1,3})?))?$/i',
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$acceptedLanguage,
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$matches
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);
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// Invalid language? -> skip
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if (!$res) {
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continue;
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}
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// split language codes based on it's "-"
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$lang_code = explode('-', $matches[1]);
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// determine the quality of the guess
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if (isset($matches[2])) {
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$lang_quality = (float)$matches[2];
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} else {
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// fallback so without a quality parameter, it's probably the best
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$lang_quality = 1;
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}
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// loop through each part of the code-parts
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while (count($lang_code)) {
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// try to mix them so we can get double-code parts too
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$match_lang = strtolower(join('-', $lang_code));
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if (file_exists(__DIR__ . "/../../../view/lang/$match_lang") &&
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is_dir(__DIR__ . "/../../../view/lang/$match_lang")) {
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if ($lang_quality > $current_q) {
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$current_lang = $match_lang;
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$current_q = $lang_quality;
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break;
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}
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}
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if (isset($preferred)) {
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return $preferred;
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// remove the most right code-part
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array_pop($lang_code);
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}
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}
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// in case none matches, get the system wide configured language, or fall back to English
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return $sysLang;
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return $current_lang;
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}
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/**
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@ -4,6 +4,7 @@ use Dice\Dice;
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use Friendica\App;
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use Friendica\Core\Cache;
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use Friendica\Core\Config;
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use Friendica\Core\L10n\L10n;
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use Friendica\Core\Lock\ILock;
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use Friendica\Database\Database;
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use Friendica\Factory;
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@ -173,4 +174,9 @@ return [
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['addRoutes', [include __DIR__ . '/routes.config.php'], Dice::CHAIN_CALL],
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],
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],
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L10n::class => [
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'constructParams' => [
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$_SERVER, $_GET
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],
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],
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];
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95
tests/src/Core/L10n/L10nTest.php
Normal file
95
tests/src/Core/L10n/L10nTest.php
Normal file
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@ -0,0 +1,95 @@
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<?php
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namespace src\Core\L10n;
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use Friendica\Core\L10n\L10n;
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use Friendica\Test\MockedTest;
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class L10nTest extends MockedTest
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{
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public function dataDetectLanguage()
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{
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return [
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'empty' => [
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'server' => [],
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'get' => [],
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'default' => 'en',
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'assert' => 'en',
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],
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'withGet' => [
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'server' => [],
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'get' => ['lang' => 'de'],
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'default' => 'en',
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'assert' => 'de',
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],
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'withPipe' => [
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'server' => ['HTTP_ACCEPT_LANGUAGE' => 'en-gb'],
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'get' => [],
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'default' => 'en',
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'assert' => 'en-gb',
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],
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'withoutPipe' => [
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'server' => ['HTTP_ACCEPT_LANGUAGE' => 'fr'],
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'get' => [],
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'default' => 'en',
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'assert' => 'fr',
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],
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'withQuality1' => [
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'server' => ['HTTP_ACCEPT_LANGUAGE' => 'fr;q=0.5,de'],
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'get' => [],
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'default' => 'en',
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'assert' => 'de',
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],
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'withQuality2' => [
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'server' => ['HTTP_ACCEPT_LANGUAGE' => 'fr;q=0.5,de;q=0.2'],
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'get' => [],
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'default' => 'en',
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'assert' => 'fr',
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],
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'withLangOverride' => [
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'server' => ['HTTP_ACCEPT_LANGUAGE' => 'fr;q=0.5,de;q=0.2'],
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'get' => ['lang' => 'it'],
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'default' => 'en',
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'assert' => 'it',
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],
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'withQualityAndPipe' => [
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'server' => ['HTTP_ACCEPT_LANGUAGE' => 'fr;q=0.5,de;q=0.2,nb-no;q=0.7'],
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'get' => [],
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'default' => 'en',
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'assert' => 'nb-no',
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],
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'withQualityAndInvalid' => [
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'server' => ['HTTP_ACCEPT_LANGUAGE' => 'fr;q=0.5,bla;q=0.2,nb-no;q=0.7'],
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'get' => [],
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'default' => 'en',
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'assert' => 'nb-no',
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],
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'withQualityAndInvalid2' => [
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'server' => ['HTTP_ACCEPT_LANGUAGE' => 'blu;q=0.9,bla;q=0.2,nb-no;q=0.7'],
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'get' => [],
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'default' => 'en',
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'assert' => 'nb-no',
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],
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'withQualityAndInvalidAndAbsolute' => [
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'server' => ['HTTP_ACCEPT_LANGUAGE' => 'blu;q=0.9,de,nb-no;q=0.7'],
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'get' => [],
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'default' => 'en',
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'assert' => 'de',
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],
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'withInvalidGet' => [
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'server' => ['HTTP_ACCEPT_LANGUAGE' => 'blu;q=0.9,nb-no;q=0.7'],
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'get' => ['lang' => 'blu'],
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'default' => 'en',
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'assert' => 'nb-no',
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],
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];
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}
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/**
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* @dataProvider dataDetectLanguage
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*/
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public function testDetectLanguage(array $server, array $get, string $default, string $assert)
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{
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$this->assertEquals($assert, L10n::detectLanguage($server, $get, $default));
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}
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}
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