/**
  * Send the next part of the file to upload.
  * @param [$chunk] the next set of bytes to send. If false will used $data passed
  * at construct time.
  */
 public function nextChunk($chunk = false)
 {
     if (false == $this->resumeUri) {
         $this->resumeUri = $this->getResumeUri();
     }
     if (false == $chunk) {
         $chunk = substr($this->data, $this->progress, $this->chunkSize);
     }
     $lastBytePos = $this->progress + strlen($chunk) - 1;
     $headers = array('content-range' => "bytes {$this->progress}-{$lastBytePos}/{$this->size}", 'content-type' => $this->request->getRequestHeader('content-type'), 'content-length' => $this->chunkSize, 'expect' => '');
     $httpRequest = new Google_Http_Request($this->resumeUri, 'PUT', $headers, $chunk);
     if ($this->client->getClassConfig("Google_Http_Request", "enable_gzip_for_uploads")) {
         $httpRequest->enableGzip();
     } else {
         $httpRequest->disableGzip();
     }
     $response = $this->client->getIo()->makeRequest($httpRequest);
     $response->setExpectedClass($this->request->getExpectedClass());
     $code = $response->getResponseHttpCode();
     $this->httpResultCode = $code;
     if (308 == $code) {
         // Track the amount uploaded.
         $range = explode('-', $response->getResponseHeader('range'));
         $this->progress = $range[1] + 1;
         // Allow for changing upload URLs.
         $location = $response->getResponseHeader('location');
         if ($location) {
             $this->resumeUri = $location;
         }
         // No problems, but upload not complete.
         return false;
     } else {
         return Google_Http_REST::decodeHttpResponse($response);
     }
 }
 public function __construct(Google_Client $client)
 {
     if (!function_exists('memcache_connect') && !class_exists("Memcached")) {
         throw new Google_Cache_Exception("Memcache functions not available");
     }
     if ($client->isAppEngine()) {
         // No credentials needed for GAE.
         $this->mc = new Memcached();
         $this->connection = true;
     } else {
         $this->host = $client->getClassConfig($this, 'host');
         $this->port = $client->getClassConfig($this, 'port');
         if (empty($this->host) || empty($this->port)) {
             throw new Google_Cache_Exception("You need to supply a valid memcache host and port");
         }
     }
 }
 public function __construct(Google_Client $client)
 {
     $this->client = $client;
     $timeout = $client->getClassConfig('Google_IO_Abstract', 'request_timeout_seconds');
     if ($timeout > 0) {
         $this->setTimeout($timeout);
     }
 }
 public function __construct(Google_Client $client)
 {
     $this->path = $client->getClassConfig($this, 'directory');
 }