C++ NPT_InputStreamReference类代码示例

/*----------------------------------------------------------------------
|   CMediaCrawler::ProcessFileRequest
+---------------------------------------------------------------------*/
NPT_Result 
CMediaCrawler::ProcessFileRequest(NPT_HttpRequest&  request, 
                                  NPT_HttpResponse& response,
                                  NPT_SocketInfo&   info)
{
    NPT_COMPILER_UNUSED(info);

    NPT_LOG_FINE("CMediaCrawler::ProcessFileRequest Received Request:");
    PLT_LOG_HTTP_MESSAGE(NPT_LOG_LEVEL_FINE, &request);

    if (request.GetMethod().Compare("GET") && request.GetMethod().Compare("HEAD")) {
        response.SetStatus(500, "Internal Server Error");
        return NPT_SUCCESS;
    }

    // add the user agent header, some stupid media servers like YME needs it
    if (!request.GetHeaders().GetHeader(NPT_HTTP_HEADER_USER_AGENT)) {
        request.GetHeaders().SetHeader(NPT_HTTP_HEADER_USER_AGENT, 
            "Platinum/" PLT_PLATINUM_VERSION_STRING);
    }

    // File requested
    NPT_HttpResponse* out_response = NULL;
    NPT_HttpUrlQuery query(request.GetUrl().GetQuery());
    const char* url = query.GetField("url");
    if (url) {
        // look for handler
        CStreamHandler* handler = NULL;
        NPT_ContainerFind(m_StreamHandlers, CStreamHandlerFinder(NULL, url), handler);
        if (handler && NPT_SUCCEEDED(handler->ProcessFileRequest(request, out_response)) && out_response) {
            // copy response code and reason
            response.SetStatus(out_response->GetStatusCode(), out_response->GetReasonPhrase());

            // copy headers
            NPT_List<NPT_HttpHeader*>::Iterator headers = out_response->GetHeaders().GetHeaders().GetFirstItem();
            while (headers) {
                response.GetHeaders().SetHeader((*headers)->GetName(), (*headers)->GetValue());
                ++headers;
            }
            response.SetEntity(new NPT_HttpEntity(response.GetHeaders()));
            
            // update inputstream
            NPT_HttpEntity* out_entity;
            if ((out_entity = out_response->GetEntity()) != NULL) {
                NPT_InputStreamReference inputstream;
                out_entity->GetInputStream(inputstream);
                if (!inputstream.IsNull()) {
                    // set the stream but do not update the content length
                    response.GetEntity()->SetInputStream(inputstream, false);
                }
            }

            delete out_response;
            return NPT_SUCCESS;
        }
    }

    response.SetStatus(404, "File Not Found");
    return NPT_SUCCESS;
}

/*----------------------------------------------------------------------
|   NPT_ZipFile::GetInputStream
+---------------------------------------------------------------------*/
NPT_Result
NPT_ZipFile::GetInputStream(Entry& entry, NPT_InputStreamReference& zip_stream, NPT_InputStream*& file_stream)
{
    // default return value
    file_stream = NULL;

    // we don't support encrypted files
    if (entry.m_Flags & NPT_ZIP_FILE_FLAG_ENCRYPTED) {
        return NPT_ERROR_NOT_SUPPORTED;
    }

    // check that we support the compression method
#if NPT_CONFIG_ENABLE_ZIP
    if (entry.m_CompressionMethod != NPT_ZIP_FILE_COMPRESSION_METHOD_NONE &&
            entry.m_CompressionMethod != NPT_ZIP_FILE_COMPRESSION_METHOD_DEFLATE) {
        return NPT_ERROR_NOT_SUPPORTED;
    }
#else
    if (entry.m_CompressionMethod != NPT_ZIP_FILE_COMPRESSION_METHOD_NONE) {
        return NPT_ERROR_NOT_SUPPORTED;
    }
#endif

    // seek to the start of the file entry
    NPT_Result result = zip_stream->Seek(entry.m_RelativeOffset);
    if (NPT_FAILED(result)) {
        NPT_LOG_WARNING_1("seek failed (%d)", result);
        return result;
    }

    // read the fixed part of the header
    unsigned char header[30];
    result = zip_stream->ReadFully(header, 30);
    if (NPT_FAILED(result)) {
        NPT_LOG_WARNING_1("read failed (%d)", result);
        return result;
    }

    NPT_UInt16 file_name_length   = NPT_BytesToInt16Le(&header[26]);
    NPT_UInt16 extra_field_length = NPT_BytesToInt16Le(&header[28]);

    unsigned int header_size = 30+file_name_length+extra_field_length;
    NPT_LargeSize zip_stream_size = 0;
    zip_stream->GetSize(zip_stream_size);
    if (entry.m_RelativeOffset+header_size+entry.m_CompressedSize > zip_stream_size) {
        // something's wrong here
        return NPT_ERROR_INVALID_FORMAT;
    }

    file_stream = new NPT_SubInputStream(zip_stream, entry.m_RelativeOffset+header_size, entry.m_CompressedSize);

#if NPT_CONFIG_ENABLE_ZIP
    if (entry.m_CompressionMethod == NPT_ZIP_FILE_COMPRESSION_METHOD_DEFLATE) {
        NPT_InputStreamReference file_stream_ref(file_stream);
        file_stream = new NPT_ZipInflatingInputStream(file_stream_ref, true);
    }
#endif

    return NPT_SUCCESS;
}

/*----------------------------------------------------------------------
|   PLT_HttpServer::ServeFile
+---------------------------------------------------------------------*/
NPT_Result 
PLT_HttpServer::ServeFile(const NPT_HttpRequest&        request, 
                          const NPT_HttpRequestContext& context,
                          NPT_HttpResponse&             response,
                          NPT_String                    file_path) 
{
    NPT_InputStreamReference stream;
    NPT_File                 file(file_path);
    NPT_FileInfo             file_info;
    
    // prevent hackers from accessing files outside of our root
    if ((file_path.Find("/..") >= 0) || (file_path.Find("\\..") >= 0) ||
        NPT_FAILED(NPT_File::GetInfo(file_path, &file_info))) {
        return NPT_ERROR_NO_SUCH_ITEM;
    }
    
    // check for range requests
    const NPT_String* range_spec = request.GetHeaders().GetHeaderValue(NPT_HTTP_HEADER_RANGE);
    
    // handle potential 304 only if range header not set
    NPT_DateTime  date;
    NPT_TimeStamp timestamp;
    if (NPT_SUCCEEDED(PLT_UPnPMessageHelper::GetIfModifiedSince((NPT_HttpMessage&)request, date)) &&
        !range_spec) {
        date.ToTimeStamp(timestamp);
        
        NPT_LOG_INFO_5("File %s timestamps: request=%d (%s) vs file=%d (%s)", 
                       (const char*)request.GetUrl().GetPath(),
                       (NPT_UInt32)timestamp.ToSeconds(),
                       (const char*)date.ToString(),
                       (NPT_UInt32)file_info.m_ModificationTime,
                       (const char*)NPT_DateTime(file_info.m_ModificationTime).ToString());
        
        if (timestamp >= file_info.m_ModificationTime) {
            // it's a match
            NPT_LOG_FINE_1("Returning 304 for %s", request.GetUrl().GetPath().GetChars());
            response.SetStatus(304, "Not Modified", NPT_HTTP_PROTOCOL_1_1);
            return NPT_SUCCESS;
        }
    }
    
    // open file
    if (NPT_FAILED(file.Open(NPT_FILE_OPEN_MODE_READ)) || 
        NPT_FAILED(file.GetInputStream(stream))        ||
        stream.IsNull()) {
        return NPT_ERROR_NO_SUCH_ITEM;
    }
    
    // set Last-Modified and Cache-Control headers
    if (file_info.m_ModificationTime) {
        NPT_DateTime last_modified = NPT_DateTime(file_info.m_ModificationTime);
        response.GetHeaders().SetHeader("Last-Modified", last_modified.ToString(NPT_DateTime::FORMAT_RFC_1123), true);
        response.GetHeaders().SetHeader("Cache-Control", "max-age=0,must-revalidate", true);
        //response.GetHeaders().SetHeader("Cache-Control", "max-age=1800", true);
    }
    
    PLT_HttpRequestContext tmp_context(request, context);
    return ServeStream(request, context, response, stream, PLT_MimeType::GetMimeType(file_path, &tmp_context));
}

/*----------------------------------------------------------------------
|   NPT_File::Load
+---------------------------------------------------------------------*/
NPT_Result
NPT_File::Load(NPT_DataBuffer& buffer)
{
    NPT_InputStreamReference input;

    // get the input stream for the file
    NPT_CHECK_FATAL(GetInputStream(input));

    // read the stream
    return input->Load(buffer);
}

/*----------------------------------------------------------------------
|   PLT_FileMediaServer::OnAlbumArtRequest
+---------------------------------------------------------------------*/
NPT_Result 
PLT_FileMediaServer::OnAlbumArtRequest(NPT_HttpResponse& response,
                                       NPT_String        file_path)
{
    NPT_LargeSize            total_len;
    NPT_File                 file(file_path);
    NPT_InputStreamReference stream;

    // prevent hackers from accessing files outside of our root
    if ((file_path.Find("/..") >= 0) || (file_path.Find("\\..") >= 0)) {
        return NPT_FAILURE;
    }

    if (NPT_FAILED(file.Open(NPT_FILE_OPEN_MODE_READ)) || 
        NPT_FAILED(file.GetInputStream(stream))        || 
        NPT_FAILED(stream->GetSize(total_len)) || (total_len == 0)) {
        goto filenotfound;
    } else {
        NPT_String extension = NPT_FilePath::FileExtension(file_path);
        if (extension.GetLength() == 0) {
            goto filenotfound;
        }

        PLT_MetadataHandler* metadataHandler = NULL;
        char* caData;
        int   caDataLen;
        NPT_Result ret = NPT_ContainerFind(m_MetadataHandlers, 
                                           PLT_MetadataHandlerFinder(extension), 
                                           metadataHandler);
        if (NPT_FAILED(ret) || metadataHandler == NULL) {
            goto filenotfound;
        }
        // load the metadatahandler and read the cover art
        if (NPT_FAILED(metadataHandler->Load(*stream)) || 
            NPT_FAILED(metadataHandler->GetCoverArtData(caData, caDataLen))) {
            goto filenotfound;
        }
        
        PLT_HttpHelper::SetContentType(response, "application/octet-stream");
        PLT_HttpHelper::SetBody(response, caData, caDataLen);
        delete caData;
        return NPT_SUCCESS;
    }

filenotfound:
    response.SetStatus(404, "File Not Found");
    return NPT_SUCCESS;
}

/*----------------------------------------------------------------------
|   PLT_HttpHelper::IsBodyStreamSeekable
+---------------------------------------------------------------------*/
bool
PLT_HttpHelper::IsBodyStreamSeekable(NPT_HttpMessage* message)
{
    NPT_HttpEntity* entity = message->GetEntity();
    NPT_InputStreamReference stream;
    if (!entity || NPT_FAILED(entity->GetInputStream(stream))) return true;

    // try to get current position and seek there
    NPT_Position position;
    if (NPT_FAILED(stream->Tell(position)) || 
        NPT_FAILED(stream->Seek(position))) {
        return false;
    }

    return true;
}

/*----------------------------------------------------------------------
|   PLT_Downloader::ProcessResponse
+---------------------------------------------------------------------*/
NPT_Result 
PLT_Downloader::ProcessResponse(NPT_Result                    res, 
                                const NPT_HttpRequest&        request, 
                                const NPT_HttpRequestContext& context, 
                                NPT_HttpResponse*             response)
{
    NPT_COMPILER_UNUSED(request);
    NPT_COMPILER_UNUSED(context);

    if (NPT_FAILED(res)) {
        NPT_LOG_WARNING_2("Downloader error %d for %s", res, m_URL.ToString().GetChars());
        m_State = PLT_DOWNLOADER_ERROR;
        return res;
    }

    m_State = PLT_DOWNLOADER_DOWNLOADING;

    NPT_HttpEntity* entity;
    NPT_InputStreamReference body;
    if (!response || 
        !(entity = response->GetEntity()) || 
        NPT_FAILED(entity->GetInputStream(body)) || 
        body.IsNull()) {
        m_State = PLT_DOWNLOADER_ERROR;
        NPT_LOG_WARNING_2("No body %d for %s", res, m_URL.ToString().GetChars());
        return NPT_FAILURE;
    }

    // Read body (no content length means until socket is closed)
    res = NPT_StreamToStreamCopy(*body.AsPointer(), 
        *m_Output.AsPointer(), 
        0, 
        entity->GetContentLength());

    if (NPT_FAILED(res)) {
        NPT_LOG_WARNING_2("Downloader error %d for %s", res, m_URL.ToString().GetChars());
        m_State = PLT_DOWNLOADER_ERROR;
        return res;
    }
    
    NPT_LOG_INFO_1("Finished downloading %s", m_URL.ToString().GetChars());
    m_State = PLT_DOWNLOADER_SUCCESS;
    return NPT_SUCCESS;
}

/*----------------------------------------------------------------------
|       ShowResponse
+---------------------------------------------------------------------*/
static void
ShowResponse(NPT_HttpResponse* response)
{
    bool check_available = true;//true;
    
    // show entity
    NPT_HttpEntity* entity = response->GetEntity();
    if (entity == NULL) return;
    
    NPT_Console::OutputF("ENTITY: length=%lld, type=%s, encoding=%s\n",
                         entity->GetContentLength(),
                         entity->GetContentType().GetChars(),
                         entity->GetContentEncoding().GetChars());

    NPT_DataBuffer buffer(65536);
    NPT_Result result;
    NPT_InputStreamReference input;
    entity->GetInputStream(input);
    
    NPT_TimeStamp start;
    NPT_System::GetCurrentTimeStamp(start);
    float total_read = 0.0f;
    for (;;) {
        NPT_Size bytes_read = 0;
        NPT_LargeSize available = 0;
        NPT_Size to_read = 65536;
        if (check_available) {
            input->GetAvailable(available);
            if ((NPT_Size)available < to_read) to_read = (NPT_Size)available;
            if (to_read == 0) {
                to_read = 1;
                NPT_TimeStamp sleep_time(0.01f);
                NPT_System::Sleep(sleep_time);
            }
        }
        result = input->Read(buffer.UseData(), to_read, &bytes_read);
        if (NPT_FAILED(result)) break;
        total_read += bytes_read;
        NPT_TimeStamp now;
        NPT_System::GetCurrentTimeStamp(now);
        NPT_TimeStamp duration = now-start;
        NPT_Console::OutputF("%6d avail, read %6d bytes, %6.3f KB/s\n", (int)available, bytes_read, (float)((total_read/1024.0)/(double)duration));
    }
}

/*----------------------------------------------------------------------
|   DumpBody
+---------------------------------------------------------------------*/
 static NPT_Result 
ReadBody(PLT_Downloader& downloader, NPT_InputStreamReference& stream, NPT_Size& size)
{
    NPT_LargeSize avail;
    char buffer[2048];
    NPT_Result ret = NPT_ERROR_WOULD_BLOCK;

    /* reset output param first */
    size = 0;

    /*
       we test for availability first to avoid
       getting stuck in Read forever in case blocking is true
       and the download is done writing to the stream
    */
    NPT_CHECK(stream->GetAvailable(avail));

    if (avail) {
         ret = stream->Read(buffer, 2048, &size);
         NPT_LOG_FINER_2("Read %d bytes (result = %d)\n", size, ret);
         return ret;
     } else {
         Plt_DowloaderState state = downloader.GetState();
         switch (state) {
             case PLT_DOWNLOADER_ERROR:
                 return NPT_FAILURE;

             case PLT_DOWNLOADER_SUCCESS:
                 /* no more data expected */
                 return NPT_ERROR_EOS;

             default:
                 NPT_System::Sleep(NPT_TimeInterval(0, 10000));
                 break;
         }
     }
 
     return NPT_SUCCESS;
}

/*----------------------------------------------------------------------
|   PLT_Downloader::ProcessResponse
+---------------------------------------------------------------------*/
NPT_Result 
PLT_Downloader::ProcessResponse(NPT_Result                    res, 
                                NPT_HttpRequest*              request, 
                                const NPT_HttpRequestContext& context, 
                                NPT_HttpResponse* response)
{
    NPT_COMPILER_UNUSED(request);
    NPT_COMPILER_UNUSED(context);

    if (NPT_FAILED(res)) {
        m_State = PLT_DOWNLOADER_ERROR;
        return res;
    }

    m_State = PLT_DOWNLOADER_DOWNLOADING;

    NPT_HttpEntity* entity;
    NPT_InputStreamReference body;
    if (!response || !(entity = response->GetEntity()) || 
        NPT_FAILED(entity->GetInputStream(body)) || body.IsNull()) {
        m_State = PLT_DOWNLOADER_ERROR;
        return NPT_FAILURE;
    }

    // Read body (no content length means until socket is closed)
    res = NPT_StreamToStreamCopy(*body.AsPointer(), 
        *m_Output.AsPointer(), 
        0, 
        entity->GetContentLength());

    if (NPT_FAILED(res)) {
        m_State = PLT_DOWNLOADER_ERROR;
        return res;
    }

    m_State = PLT_DOWNLOADER_SUCCESS;
    return NPT_SUCCESS;
}

void serveFile(AbortableTask *task, const NPT_String& filePath, const NPT_String& mimeType, const FrontEnd::RequestContext& reqCtx, const NPT_HttpRequest *req, NPT_HttpResponse& resp, HttpOutput *httpOutput)
{
	NPT_File f(filePath);
	NPT_FileInfo fileInfo;
	if (NPT_FAILED(f.GetInfo(fileInfo)) || fileInfo.m_Type != NPT_FileInfo::FILE_TYPE_REGULAR || NPT_FAILED(f.Open(NPT_FILE_OPEN_MODE_READ))) {
		setStatusCode(resp, 404);
		httpOutput->writeResponseHeader(resp);
		return;
	}

	MediaStore::FileDetail detail;
	detail.m_mimeType = mimeType;
	detail.m_path = filePath;
	detail.m_modificationTime = fileInfo.m_ModificationTime;
	detail.m_size = fileInfo.m_Size;
	detail.m_type = MediaStore::FileDetail::PosixFile;

	NPT_InputStreamReference fileInput;
	f.GetInputStream(fileInput);

	AdvFileReader reader(fileInput.AsPointer());
	serveStreamAdv(task, detail, &reader, reqCtx, req, resp, httpOutput, 1024 * 64);
}

/*----------------------------------------------------------------------
|   PLT_HttpHelper::GetBody
+---------------------------------------------------------------------*/
NPT_Result 
PLT_HttpHelper::GetBody(const NPT_HttpMessage& message, NPT_String& body) 
{
    NPT_Result res;
    NPT_InputStreamReference stream;

    // get stream
    NPT_HttpEntity* entity = message.GetEntity();
    if (!entity || 
        NPT_FAILED(entity->GetInputStream(stream)) || 
        stream.IsNull()) {
        return NPT_FAILURE;
    }

    // extract body
    NPT_StringOutputStream* output_stream = new NPT_StringOutputStream(&body);
    res = NPT_StreamToStreamCopy(*stream, 
                                 *output_stream, 
                                 0, 
                                 entity->GetContentLength());
    delete output_stream;
    return res;
}

/*----------------------------------------------------------------------
|   PLT_FileMediaServer::OnAlbumArtRequest
+---------------------------------------------------------------------*/
NPT_Result 
PLT_FileMediaServer::OnAlbumArtRequest(NPT_String filepath, NPT_HttpResponse& response)
{
    NPT_Size total_len;
    NPT_File file(filepath);
    NPT_InputStreamReference stream;

    if (NPT_FAILED(file.Open(NPT_FILE_OPEN_MODE_READ)) || NPT_FAILED(file.GetInputStream(stream)) || 
        NPT_FAILED(stream->GetSize(total_len)) || (total_len == 0)) {
        goto filenotfound;
    } else {
        const char* extension = PLT_MediaItem::GetExtFromFilePath(filepath, m_DirDelimiter);
        if (extension == NULL) {
            goto filenotfound;
        }

        PLT_MetadataHandler* metadataHandler = NULL;
        char* caData;
        int   caDataLen;
        NPT_Result ret = NPT_ContainerFind(m_MetadataHandlers, PLT_MetadataHandlerFinder(extension), metadataHandler);
        if (NPT_FAILED(ret) || metadataHandler == NULL) {
            goto filenotfound;
        }
        // load the metadatahandler and read the cover art
        if (NPT_FAILED(metadataHandler->Load(*stream)) || NPT_FAILED(metadataHandler->GetCoverArtData(caData, caDataLen))) {
            goto filenotfound;
        }
        PLT_HttpHelper::SetContentType(&response, "application/octet-stream");
        PLT_HttpHelper::SetBody(&response, caData, caDataLen);
        delete caData;
        return NPT_SUCCESS;
    }

filenotfound:
    response.SetStatus(404, "File Not Found");
    return NPT_SUCCESS;
}

/*----------------------------------------------------------------------
|       TcpServerLoop
+---------------------------------------------------------------------*/
static void
TcpServerLoop(int port)
{
    NPT_TcpServerSocket listener;

    NPT_Result result = listener.Bind(NPT_SocketAddress(NPT_IpAddress::Any, port)); 
    if (NPT_FAILED(result)) {
        NPT_Debug("ERROR: Bind() failed (%d)\n", result);
    }
		
    NPT_Socket* client;

    for (;;) {
        NPT_Debug("waiting for client on port %d\n", port);
        NPT_Result result = listener.WaitForNewClient(client);
        NPT_SocketInfo socket_info;
        client->GetInfo(socket_info);
        NPT_Debug("client connected from %s:%d\n",
            socket_info.remote_address.GetIpAddress().ToString().GetChars(),
            socket_info.remote_address.GetPort());
        NPT_InputStreamReference input;
        client->GetInputStream(input);
        NPT_OutputStreamReference output;
        client->GetOutputStream(output);
        do {
            char buffer[1024];
            NPT_Size bytes_read;
            result = input->Read(buffer, sizeof(buffer), &bytes_read);
            if (NPT_SUCCEEDED(result)) {
                NPT_Debug("read %ld bytes\n", bytes_read);
                output->Write(buffer, bytes_read);
            }
        } while (NPT_SUCCEEDED(result));
        delete client;
    }
}

//.........这里部分代码省略.........
                current_endpoint->info.serial_port.speed = (unsigned int)speed;
            } else {
                NPT_Debug("ERROR: missing argument for 'serial' endpoint\n");
                exit(1);
            }
        } else {
            NPT_Debug("ERROR: invalid argument (%s)\n", arg);
            exit(1);
        }

        if (current_endpoint == &in_endpoint) {
            current_endpoint = &out_endpoint;
        } else {
            current_endpoint = NULL;
        }
    }

    if (current_endpoint) {
        NPT_Debug("ERROR: missing endpoint specification\n");
        exit(1);
    }

    // data pump
    NPT_Result result;

    // allocate buffer
    unsigned char* buffer;
    buffer = (unsigned char*)malloc(packet_size);
    if (buffer == NULL) {
        NPT_Debug("ERROR: out of memory\n");
        exit(1);
    }

    // get output stream
    NPT_OutputStreamReference out;
    result = GetEndPointStreams(&out_endpoint, NULL, &out);
    if (NPT_FAILED(result)) {
        NPT_Debug("ERROR: failed to get stream for output (%d)", result);
        exit(1);
    }

    unsigned long offset = 0;
    unsigned long total  = 0;
    if (in_endpoint.type == ENDPOINT_TYPE_UDP_SERVER ||
        in_endpoint.type == ENDPOINT_TYPE_MULTICAST_SERVER) {
        NPT_UdpSocket* udp_socket;
        result = GetEndPointUdpSocket(&in_endpoint, udp_socket);

        // packet loop
        NPT_DataBuffer packet(32768);
        NPT_SocketAddress address;

        do {
            result = udp_socket->Receive(packet, &address);
            if (NPT_SUCCEEDED(result)) {
                if (Options.verbose) {
                    NPT_String ip = address.GetIpAddress().ToString();
                    NPT_Debug("Received %d bytes from %s\n", packet.GetDataSize(), ip.GetChars());
                }
                result = out->Write(packet.GetData(), packet.GetDataSize(), NULL);
                offset += packet.GetDataSize();
                total  += packet.GetDataSize();
            }
        } while (NPT_SUCCEEDED(result));
    } else {
        // get the input stream
        NPT_InputStreamReference in;
        result = GetEndPointStreams(&in_endpoint, &in, NULL);
        if (NPT_FAILED(result)) {
            NPT_Debug("ERROR: failed to get stream for input (%d)\n", result);
            exit(1);
        }

        // stream loop 
        do {
            NPT_Size bytes_read;
            NPT_Size bytes_written;

            // send 
            result = in->Read(buffer, packet_size, &bytes_read);
            if (Options.show_progress) {
                NPT_Debug("[%d]\r", total);
            }
            if (NPT_SUCCEEDED(result) && bytes_read) {
                result = out->Write(buffer, bytes_read, &bytes_written);
                if (Options.show_progress) {
                    NPT_Debug("[%d]\r", total);
                }
                offset += bytes_written;
                total  += bytes_written;
            } else {
                printf("[%d] *******************\n", result);
                exit(1);
            }
        } while (NPT_SUCCEEDED(result));
    }

    delete buffer;
    return 0;
}