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<?php
/**
* @author Bart Visscher <bartv@thisnet.nl>
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <icewind@owncloud.com>
* @author Robin McCorkell <robin@mccorkell.me.uk>
*
* @copyright Copyright (c) 2016, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\L10N;
use OCP\IConfig;
use OCP\IRequest;
use OCP\L10N\IFactory;
/**
* A factory that generates language instances
*/
class Factory implements IFactory {
/** @var string */
protected $requestLanguage = '';
/**
* cached instances
* @var array Structure: Lang => App => \OCP\IL10N
*/
protected $instances = [];
/**
* @var array Structure: App => string[]
*/
protected $availableLanguages = [];
/** @var IConfig */
protected $config;
/** @var IRequest */
protected $request;
/**
* @param IConfig $config
* @param IRequest $request
*/
public function __construct(IConfig $config, IRequest $request) {
$this->config = $config;
$this->request = $request;
}
/**
* Get a language instance
*
* @param string $app
* @param string|null $lang
* @return \OCP\IL10N
*/
public function get($app, $lang = null) {
$key = $lang;
if ($key === null) {
$key = 'null';
}
if (!isset($this->instances[$key][$app])) {
$this->instances[$key][$app] = new \OC_L10N($app, $lang);
}
return $this->instances[$key][$app];
}
/**
* Find the best language
*
* @param string|null $app App id or null for core
* @return string language If nothing works it returns 'en'
*/
public function findLanguage($app = null) {
if ($this->requestLanguage !== '' && $this->languageExists($app, $this->requestLanguage)) {
return $this->requestLanguage;
}
$userId = \OC_User::getUser(); // FIXME not available in non-static?
if ($userId && $this->config->getUserValue($userId, 'core', 'lang')) {
$lang = $this->config->getUserValue($userId, 'core', 'lang');
$this->requestLanguage = $lang;
if ($this->languageExists($app, $lang)) {
return $lang;
}
}
$defaultLanguage = $this->config->getSystemValue('default_language', false);
if ($defaultLanguage !== false) {
return $defaultLanguage;
}
$lang = $this->setLanguageFromRequest($app);
if ($userId && $app === null && !$this->config->getUserValue($userId, 'core', 'lang')) {
$this->config->setUserValue($userId, 'core', 'lang', $lang);
}
return $lang;
}
/**
* Find all available languages for an app
*
* @param string|null $app App id or null for core
* @return array an array of available languages
*/
public function findAvailableLanguages($app = null) {
$key = $app;
if ($key === null) {
$key = 'null';
}
// also works with null as key
if (!empty($this->availableLanguages[$key])) {
return $this->availableLanguages[$key];
}
$available = ['en']; //english is always available
$dir = $this->findL10nDir($app);
if (is_dir($dir)) {
$files = scandir($dir);
if ($files !== false) {
foreach ($files as $file) {
if (substr($file, -5) === '.json' && substr($file, 0, 4) !== 'l10n') {
$available[] = substr($file, 0, -5);
}
}
}
}
$this->availableLanguages[$key] = $available;
return $available;
}
/**
* @param string|null $app App id or null for core
* @param string $lang
* @return bool
*/
public function languageExists($app, $lang) {
if ($lang === 'en') {//english is always available
return true;
}
$languages = $this->findAvailableLanguages($app);
return array_search($lang, $languages);
}
/**
* @param string|null $app App id or null for core
* @return string
*/
public function setLanguageFromRequest($app = null) {
$header = $this->request->getHeader('ACCEPT_LANGUAGE');
if ($header) {
$available = $this->findAvailableLanguages($app);
// E.g. make sure that 'de' is before 'de_DE'.
sort($available);
$preferences = preg_split('/,\s*/', strtolower($header));
foreach ($preferences as $preference) {
list($preferred_language) = explode(';', $preference);
$preferred_language = str_replace('-', '_', $preferred_language);
foreach ($available as $available_language) {
if ($preferred_language === strtolower($available_language)) {
if ($app === null && !$this->requestLanguage) {
$this->requestLanguage = $available_language;
}
return $available_language;
}
}
// Fallback from de_De to de
foreach ($available as $available_language) {
if (substr($preferred_language, 0, 2) === $available_language) {
if ($app === null && !$this->requestLanguage) {
$this->requestLanguage = $available_language;
}
return $available_language;
}
}
}
}
if (!$this->requestLanguage) {
$this->requestLanguage = 'en';
}
return 'en'; // Last try: English
}
/**
* find the l10n directory
*
* @param string $app App id or empty string for core
* @return string directory
*/
protected function findL10nDir($app = '') {
if ($app !== '') {
// Check if the app is in the app folder
if (file_exists(\OC_App::getAppPath($app) . '/l10n/')) {
return \OC_App::getAppPath($app) . '/l10n/';
} else {
return \OC::$SERVERROOT . '/' . $app . '/l10n/';
}
}
return \OC::$SERVERROOT.'/core/l10n/';
}
}
|
