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<?php
/**
* LSMessageSource class file.
*
* @author Denis Chenu
* @link http://www.yiiframework.com/
* @copyright 2021 LimeSurvey
* License: GNU/GPL License v3 or later, see LICENSE.php
*/
class LSMessageSource extends CMessageSource
{
public const CACHE_KEY_PREFIX = 'Yii.LSMessageSource.';
public const MO_FILE_EXT = '.mo';
public const PO_FILE_EXT = '.po';
/**
* @var integer the time in seconds that the messages can remain valid in cache.
* @see CDbMessageSource::cachingDuration
* @see CGettextMessageSource::cachingDuration
*/
public $cachingDuration = 0;
/**
* @var string the ID of the cache application component that is used to cache the messages.
* Defaults to 'cache' which refers to the primary cache application component.
* @see CDbMessageSource::cacheID
* @see CGettextMessageSource::cacheID
*/
public $cacheID = 'cache';
/**
* @var string the base path for all translated messages. Defaults to null, meaning
* @see CGettextMessageSource::basePath
*/
public $basePath;
/**
* @var boolean whether to load messages from MO files. Defaults to true.
* @see CGettextMessageSource::useMoFile
*/
public $useMoFile = true;
/**
* @var boolean whether to use Big Endian to read MO files.
* Defaults to false. This property is only used when {@link useMoFile} is true.
* see CGettextMessageSource::useBigEndian
*/
public $useBigEndian = false;
/**
* Loads the message translation for the specified language and category.
* @see CGettextMessageSource::loadMessages
* @see CDbMessageSource::loadMessages
* @param string $category the message category, unused in LimeSurvey core (always '')
* @param string $language the target language
* @return array the loaded messages
*/
protected function loadMessages($category, $language)
{
$messageFile = $this->basePath . DIRECTORY_SEPARATOR . $language . DIRECTORY_SEPARATOR . $language;
if ($this->useMoFile) {
$messageFile .= self::MO_FILE_EXT;
} else {
$messageFile .= self::PO_FILE_EXT;
}
if (
$this->cachingDuration > 0
&& $this->cacheID !== false
&& ($cache = Yii::app()->getComponent($this->cacheID)) !== null
) {
$key = self::CACHE_KEY_PREFIX . $messageFile . $category . '.' . $language;
if (($data = $cache->get($key)) !== false) {
return unserialize($data);
}
}
/* Messages by getext */
if (is_file($messageFile)) {
if ($this->useMoFile) {
$file = new LSGettextMoFile($this->useBigEndian);
} else {
$file = new CGettextPoFile();
}
$messagesGettext = $file->load($messageFile, $category);
} else {
$messagesGettext = array();
}
/* Messages by DB */
if (App()->getConfig('DBVersion') >= 480) {
$messagesDb = $this->loadMessagesFromDb($category, $language);
} else {
$messagesDb = array();
}
$messages = array_merge(
$messagesGettext,
$messagesDb
);
if (isset($cache)) {
/* $key is set if $cache is set */
$cache->set($key, serialize($messages), $this->cachingDuration);
}
return $messages;
}
/**
* @see CDbMessageSource::getDbConnection
* @throws CException if {@link connectionID} application component is invalid
* @return CDbConnection the DB connection used for the message source.
*/
public function getDbConnection()
{
return App()->getDb();
}
/**
* @see CDbMessageSource::loadMessagesFromDb
* @param string $category the message category, unused in LimeSurvey core (always '')
* @param string $language the target language
* @return array the messages loaded from database
*/
protected function loadMessagesFromDb($category, $language)
{
$command = $this->getDbConnection()->createCommand()
->select("t1.message AS message, t2.translation AS translation")
->from(array(
"{{source_message}} t1",
"{{message}} t2"
))
->where(
't1.id=t2.id AND t1.category=:category AND t2.language=:language',
array(':category' => $category, ':language' => $language)
);
$messages = array();
foreach ($command->queryAll() as $row) {
$messages[$row['message']] = $row['translation'];
}
return $messages;
}
}