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, $config->get('system', 'language', 'en')));
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}
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/**
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@ -140,7 +140,7 @@ class L10n
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$this->lang = $this->langSave;
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$this->stringsSave = null;
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$this->langSave = null;
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$this->langSave = null;
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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, $dashpos));
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}
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if (empty($acceptedLanguages)) {
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$acceptedLanguages = [];
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}
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// Add get as absolute quality accepted language (except this language isn't valid)
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if (!empty($get['lang'])) {
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$acceptedLanguages[] = $get['lang'];
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}
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// return the sys language in case there's nothing to do
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if (empty($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 = $lang_quality;
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break;
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}
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}
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// remove the most right code-part
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array_pop($lang_code);
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}
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}
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if (isset($_GET['lang'])) {
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$lang_list = [$_GET['lang']];
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}
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// check if we have translations for the preferred languages and pick the 1st that has
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foreach ($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 = $lang;
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break;
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}
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}
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if (isset($preferred)) {
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return $preferred;
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}
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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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