/**
* Initializes the instance.
*
* @throws \Exception
*/
protected function initialize()
{
$this->initializeConfiguration();
$this->emptySegmentValue = $this->configuration->get('init/emptySegmentValue');
$this->rootPageId = (int) $this->configuration->get('pagePath/rootpage_id');
$this->utility = GeneralUtility::makeInstance('DmitryDulepov\\Realurl\\Utility', $this->configuration);
$this->cache = $this->utility->getCache();
$this->separatorCharacter = $this->configuration->get('pagePath/spaceCharacter');
}
/**
* Returns the cache to use.
*
* @return CacheInterface
*/
public function getCache()
{
if (TYPO3_MODE !== 'FE' || is_object($GLOBALS['BE_USER']) || $this->configuration->get('cache/disable')) {
$cache = GeneralUtility::makeInstance('DmitryDulepov\\Realurl\\Cache\\NullCache');
} else {
$cache = CacheFactory::getCache();
}
return $cache;
}
/**
* Removes ignored parameters from the query string.
*
* @param string $queryString
* @return string
*/
protected function removeIgnoredParametersFromQueryString($queryString)
{
if ($queryString) {
$ignoredParametersRegExp = $this->configuration->get('cache/ignoredGetParametersRegExp');
if ($ignoredParametersRegExp) {
$collectedParameters = array();
foreach (explode('&', trim($queryString, '&')) as $parameterPair) {
list($parameterName, $parameterValue) = explode('=', $parameterPair, 2);
if ($parameterName !== '') {
$parameterName = urldecode($parameterName);
if (preg_match($ignoredParametersRegExp, $parameterName)) {
$this->ignoredUrlParameters[$parameterName] = $parameterValue;
} else {
$collectedParameters[$parameterName] = urldecode($parameterValue);
}
}
}
$queryString = $this->createQueryStringFromParameters($collectedParameters);
}
}
return $queryString;
}
/**
* Checks if the URL can be cached. This function may prevent RealURL cache
* pollution with Solr or Indexed search URLs.
*
* @param string $url
* @return bool
*/
protected function canCacheUrl($url)
{
$bannedUrlsRegExp = $this->configuration->get('cache/banUrlsRegExp');
return !$bannedUrlsRegExp || !preg_match($bannedUrlsRegExp, $url);
}