original_string: private function headObject($object_name) {
      $headers = $this->getOAuthTokenHeader(parent::READ_SCOPE);
      if ($headers === false) {
        if (!$this->quiet) {
          trigger_error("Unable to acquire OAuth token.", E_USER_WARNING);
        }
        return false;
      }
  
      $url = $this->createObjectUrl($this->bucket_name, $object_name);
      $http_response = $this->makeHttpRequest($url, "HEAD", $headers);
      if ($http_response === false) {
        if (!$this->quiet) {
          trigger_error('Unable to connect to the Cloud Storage Service.',
                        E_USER_WARNING);
        }
        return false;
      }
  
      $status_code = $http_response['status_code'];
      if (HttpResponse::OK !== $status_code) {
        if (!$this->quiet && HttpResponse::NOT_FOUND !== $status_code) {
          trigger_error($this->getErrorMessage($http_response['status_code'],
                                               $http_response['body']),
                        E_USER_WARNING);
        }
        return false;
      }
  
      $headers = $http_response['headers'];
      return ['size' => $this->getHeaderValue('x-goog-stored-content-length',
                                              $headers),
              'mtime' => $this->getHeaderValue('Last-Modified', $headers)];
    }
code: private function headObject($object_name) {
      $headers = $this->getOAuthTokenHeader(parent::READ_SCOPE);
      if ($headers === false) {
        if (!$this->quiet) {
          trigger_error("Unable to acquire OAuth token.", E_USER_WARNING);
        }
        return false;
      }
  
      $url = $this->createObjectUrl($this->bucket_name, $object_name);
      $http_response = $this->makeHttpRequest($url, "HEAD", $headers);
      if ($http_response === false) {
        if (!$this->quiet) {
          trigger_error('Unable to connect to the Cloud Storage Service.',
                        E_USER_WARNING);
        }
        return false;
      }
  
      $status_code = $http_response['status_code'];
      if (HttpResponse::OK !== $status_code) {
        if (!$this->quiet && HttpResponse::NOT_FOUND !== $status_code) {
          trigger_error($this->getErrorMessage($http_response['status_code'],
                                               $http_response['body']),
                        E_USER_WARNING);
        }
        return false;
      }
  
      $headers = $http_response['headers'];
      return ['size' => $this->getHeaderValue('x-goog-stored-content-length',
                                              $headers),
              'mtime' => $this->getHeaderValue('Last-Modified', $headers)];
    }
code_tokens: private function headObject ( $ object_name ) { $ headers = $ this -> getOAuthTokenHeader ( parent :: READ_SCOPE ) ; if ( $ headers === false ) { if ( ! $ this -> quiet ) { trigger_error ( "Unable to acquire OAuth token." , E_USER_WARNING ) ; } return false ; } $ url = $ this -> createObjectUrl ( $ this -> bucket_name , $ object_name ) ; $ http_response = $ this -> makeHttpRequest ( $ url , "HEAD" , $ headers ) ; if ( $ http_response === false ) { if ( ! $ this -> quiet ) { trigger_error ( 'Unable to connect to the Cloud Storage Service.' , E_USER_WARNING ) ; } return false ; } $ status_code = $ http_response [ 'status_code' ] ; if ( HttpResponse :: OK !== $ status_code ) { if ( ! $ this -> quiet && HttpResponse :: NOT_FOUND !== $ status_code ) { trigger_error ( $ this -> getErrorMessage ( $ http_response [ 'status_code' ] , $ http_response [ 'body' ] ) , E_USER_WARNING ) ; } return false ; } $ headers = $ http_response [ 'headers' ] ; return [ 'size' => $ this -> getHeaderValue ( 'x-goog-stored-content-length' , $ headers ) , 'mtime' => $ this -> getHeaderValue ( 'Last-Modified' , $ headers ) ] ; }
docstring: Perform a HEAD request on an object to get size & mtime info.
docstring_tokens: Perform a HEAD request on an object to get size & mtime info .