/**
* Returns best-matching Locale object based on the Accept-Language header
* provided as parameter. System default locale will be returned if no
* successful matches were done.
*
* @param string $acceptLanguageHeader The Accept-Language HTTP header
* @return \TYPO3\FLOW3\I18n\Locale Best-matching existing Locale instance
* @api
*/
public function detectLocaleFromHttpHeader($acceptLanguageHeader)
{
$acceptableLanguages = \TYPO3\FLOW3\I18n\Utility::parseAcceptLanguageHeader($acceptLanguageHeader);
if ($acceptableLanguages === FALSE) {
return $this->localizationService->getConfiguration()->getDefaultLocale();
}
foreach ($acceptableLanguages as $languageIdentifier) {
if ($languageIdentifier === '*') {
return $this->localizationService->getConfiguration()->getDefaultLocale();
}
try {
$locale = new \TYPO3\FLOW3\I18n\Locale($languageIdentifier);
} catch (\TYPO3\FLOW3\I18n\Exception\InvalidLocaleIdentifierException $exception) {
continue;
}
$bestMatchingLocale = $this->localeCollection->findBestMatchingLocale($locale);
if ($bestMatchingLocale !== NULL) {
return $bestMatchingLocale;
}
}
return $this->localizationService->getConfiguration()->getDefaultLocale();
}
/**
* @test
* @dataProvider sampleHttpAcceptLanguageHeaders
*/
public function httpAcceptLanguageHeadersAreParsedCorrectly($acceptLanguageHeader, array $expectedResult)
{
$languages = \TYPO3\FLOW3\I18n\Utility::parseAcceptLanguageHeader($acceptLanguageHeader);
$this->assertEquals($expectedResult, $languages);
}
