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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
* @category Piwik
* @package Piwik
*/
namespace Piwik;
use Exception;
use Piwik\Config;
use Piwik\Common;
/**
* @package Piwik
*/
class Translate
{
static private $instance = null;
static private $languageToLoad = null;
private $loadedLanguage = false;
/**
* @return \Piwik\Translate
*/
static public function getInstance()
{
if (self::$instance == null) {
self::$instance = new self;
}
return self::$instance;
}
public function loadEnglishTranslation()
{
$this->loadCoreTranslationFile('en');
}
public function unloadEnglishTranslation()
{
$GLOBALS['Piwik_translations'] = array();
}
public function reloadLanguage($language = false)
{
if (empty($language)) {
$language = $this->getLanguageToLoad();
}
$this->unloadEnglishTranslation();
$this->loadEnglishTranslation();
$this->loadCoreTranslation($language);
\Piwik\PluginsManager::getInstance()->loadPluginTranslations($language);
}
/**
* Reads the specified code translation file in memory.
*
* @param bool|string $language 2 letter language code. If not specified, will detect current user translation, or load default translation.
* @return void
*/
public function loadCoreTranslation($language = false)
{
if (empty($language)) {
$language = $this->getLanguageToLoad();
}
if ($this->loadedLanguage == $language) {
return;
}
$this->loadCoreTranslationFile($language);
}
private function loadCoreTranslationFile($language)
{
$translations = array();
$path = PIWIK_INCLUDE_PATH . '/lang/' . $language . '.php';
if (!Common::isValidFilename($language) || !is_readable($path)) {
throw new Exception(Piwik_TranslateException('General_ExceptionLanguageFileNotFound', array($language)));
}
require $path;
$this->mergeTranslationArray($translations);
$this->setLocale();
$this->loadedLanguage = $language;
}
public function mergeTranslationArray($translation)
{
if (!isset($GLOBALS['Piwik_translations'])) {
$GLOBALS['Piwik_translations'] = array();
}
// we could check that no string overlap here
$GLOBALS['Piwik_translations'] = array_merge($GLOBALS['Piwik_translations'], array_filter($translation, 'strlen'));
}
/**
* @return string the language filename prefix, eg 'en' for english
* @throws exception if the language set is not a valid filename
*/
public function getLanguageToLoad()
{
if (is_null(self::$languageToLoad)) {
$lang = Common::getRequestVar('language', '', 'string');
Piwik_PostEvent('Translate.getLanguageToLoad', array(&$lang));
self::$languageToLoad = $lang;
}
return self::$languageToLoad;
}
/** Reset the cached language to load. Used in tests. */
static public function reset()
{
self::$languageToLoad = null;
}
public function getLanguageLoaded()
{
return $this->loadedLanguage;
}
public function getLanguageDefault()
{
return Config::getInstance()->General['default_language'];
}
/**
* Generate javascript translations array
*
* @param array $moduleList
* @return string containing javascript code with translations array (including <script> tag)
*/
public function getJavascriptTranslations(array $moduleList)
{
if (!in_array('General', $moduleList)) {
$moduleList[] = 'General';
}
$js = 'var translations = {';
$moduleRegex = '#^(';
foreach ($moduleList as $module) {
$moduleRegex .= $module . '|';
}
$moduleRegex = substr($moduleRegex, 0, -1);
$moduleRegex .= ')_.*_js$#i';
// Hack: common translations used in JS but not only, force as them to be defined in JS
$translations = $GLOBALS['Piwik_translations'];
$toSetInJs = array('General_Save', 'General_OrCancel');
foreach ($toSetInJs as $toSetId) {
$translations[$toSetId . '_js'] = $translations[$toSetId];
}
foreach ($translations as $key => $value) {
if (preg_match($moduleRegex, $key)) {
$js .= '"' . $key . '": "' . str_replace('"', '\"', $value) . '",';
}
}
$js = substr($js, 0, -1);
$js .= '};';
$js .= "\n" . 'if(typeof(piwik_translations) == \'undefined\') { var piwik_translations = new Object; }' .
'for(var i in translations) { piwik_translations[i] = translations[i];} ';
$js .= 'function _pk_translate(translationStringId) { ' .
'if( typeof(piwik_translations[translationStringId]) != \'undefined\' ){ return piwik_translations[translationStringId]; }' .
'return "The string "+translationStringId+" was not loaded in javascript. Make sure it is suffixed with _js and that you called %7BloadJavascriptTranslations plugins=\'\$YOUR_PLUGIN_NAME\'%7D before your javascript code.";}';
return $js;
}
/**
* Set locale
*
* @see http://php.net/setlocale
*/
private function setLocale()
{
$locale = $GLOBALS['Piwik_translations']['General_Locale'];
$locale_variant = str_replace('UTF-8', 'UTF8', $locale);
setlocale(LC_ALL, $locale, $locale_variant);
setlocale(LC_CTYPE, '');
}
}
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