/**
* Detects the capabilities from a given request object ($_SERVER)
* @param array $request_headers Request object ($_SERVER contains this data)
* @return boolean Match
*/
public function getDeviceCapabilitiesFromRequest($request_headers = null)
{
$this->httpRequest = $request_headers instanceof TeraWurflHttpRequest ? $request_headers : new TeraWurflHttpRequest($request_headers);
$this->db->numQueries = 0;
$this->matchData = array("num_queries" => 0, "match_type" => '', "matcher" => '', "match" => false, "lookup_time" => 0);
$this->lookup_start = microtime(true);
$this->foundInCache = false;
$this->capabilities = array();
// Use the ultra high performance SimpleDesktopMatcher if enabled
if (TeraWurflConfig::$SIMPLE_DESKTOP_ENGINE_ENABLE) {
require_once realpath(dirname(__FILE__) . '/UserAgentMatchers/SimpleDesktopUserAgentMatcher.php');
if (SimpleDesktopUserAgentMatcher::isDesktopBrowserHeavyDutyAnalysis($this->httpRequest)) {
$this->httpRequest->user_agent->set(WurflConstants::SIMPLE_DESKTOP_UA);
}
}
// Check cache for device
if (TeraWurflConfig::$CACHE_ENABLE) {
$cacheData = $this->db->getDeviceFromCache($this->httpRequest->user_agent->cleaned);
// Found in cache
if ($cacheData !== false) {
$this->capabilities = $cacheData;
$this->foundInCache = true;
$deviceID = $cacheData['id'];
}
}
if (!$this->foundInCache) {
require_once realpath(dirname(__FILE__) . '/UserAgentMatchers/SimpleDesktopUserAgentMatcher.php');
// Find appropriate user agent matcher
$this->userAgentMatcher = UserAgentMatcherFactory::createUserAgentMatcher($this, $this->httpRequest);
// Find the best matching WURFL ID
$deviceID = $this->getDeviceIDFromRequestLoose();
// Get the capabilities of this device and all its ancestors
$this->getFullCapabilities($deviceID);
// Now add in the Tera-WURFL results array
$this->lookup_end = microtime(true);
$this->matchData['num_queries'] = $this->db->numQueries;
$this->matchData['lookup_time'] = $this->lookup_end - $this->lookup_start;
// Add the match data to the capabilities array so it gets cached
$this->addCapabilities(array($this->matchDataKey => $this->matchData));
}
if (TeraWurflConfig::$CACHE_ENABLE == true && !$this->foundInCache) {
// Since this device was not cached, cache it now.
$this->db->saveDeviceInCache($this->httpRequest->user_agent->cleaned, $this->capabilities);
}
return $this->capabilities[$this->matchDataKey]['match'];
}
