/**
* Attempts to find the locale settings based on the HTTP_ACCEPT_LANGUAGE variable
*
* @return bool Success
*/
protected function _autoLanguage()
{
$_detectableLanguages = $this->_request->acceptLanguage();
foreach ($_detectableLanguages as $langKey) {
if (isset($this->_l10nCatalog[$langKey])) {
$this->_setLanguage($langKey);
return true;
}
if (strpos($langKey, '-') !== false) {
$langKey = substr($langKey, 0, 2);
if (isset($this->_l10nCatalog[$langKey])) {
$this->_setLanguage($langKey);
return true;
}
}
}
return false;
}
/**
* Test accept language
*
* @return void
*/
public function testAcceptLanguage()
{
$request = new Request();
// Weird language
$request->env('HTTP_ACCEPT_LANGUAGE', 'inexistent,en-ca');
$result = $request->acceptLanguage();
$this->assertEquals(['inexistent', 'en-ca'], $result, 'Languages do not match');
// No qualifier
$request->env('HTTP_ACCEPT_LANGUAGE', 'es_mx,en_ca');
$result = $request->acceptLanguage();
$this->assertEquals(['es-mx', 'en-ca'], $result, 'Languages do not match');
// With qualifier
$request->env('HTTP_ACCEPT_LANGUAGE', 'en-US,en;q=0.8,pt-BR;q=0.6,pt;q=0.4');
$result = $request->acceptLanguage();
$this->assertEquals(['en-us', 'en', 'pt-br', 'pt'], $result, 'Languages do not match');
// With spaces
$request->env('HTTP_ACCEPT_LANGUAGE', 'da, en-gb;q=0.8, en;q=0.7');
$result = $request->acceptLanguage();
$this->assertEquals(['da', 'en-gb', 'en'], $result, 'Languages do not match');
// Checking if requested
$request->env('HTTP_ACCEPT_LANGUAGE', 'es_mx,en_ca');
$result = $request->acceptLanguage();
$result = $request->acceptLanguage('en-ca');
$this->assertTrue($result);
$result = $request->acceptLanguage('en-CA');
$this->assertTrue($result);
$result = $request->acceptLanguage('en-us');
$this->assertFalse($result);
$result = $request->acceptLanguage('en-US');
$this->assertFalse($result);
}
/**
* Get languages accepted by browser and return the one matching one of
* those in config var `I18n.languages`.
*
* You should set config var `I18n.languages` to an array containing
* languages available in your app.
*
* @param \Psr\Http\Message\ServerRequestInterface $request The request.
* @param string|null $default Default language to return if no match is found.
*
* @return string
*/
public function detectLanguage(ServerRequestInterface $request, $default = null)
{
if (empty($default)) {
$lang = $this->_config['defaultLanguage'];
} else {
$lang = $default;
}
$cakeRequest = new Request();
$browserLangs = $cakeRequest->acceptLanguage();
foreach ($browserLangs as $k => $langKey) {
if (strpos($langKey, '-') !== false) {
$browserLangs[$k] = substr($langKey, 0, 2);
}
}
$acceptedLangs = array_intersect($browserLangs, array_keys($this->_config['languages']));
if (!empty($acceptedLangs)) {
$lang = reset($acceptedLangs);
}
return $lang;
}
