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downloadrequest.h

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00001 /* ScummVM - Graphic Adventure Engine
00002  *
00003  * ScummVM is the legal property of its developers, whose names
00004  * are too numerous to list here. Please refer to the COPYRIGHT
00005  * file distributed with this source distribution.
00006  *
00007  * This program is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU General Public License
00009  * as published by the Free Software Foundation; either version 2
00010  * of the License, or (at your option) any later version.
00011  *
00012  * This program is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
00020  *
00021  */
00022 
00023 #ifndef BACKENDS_CLOUD_DOWNLOADREQUEST_H
00024 #define BACKENDS_CLOUD_DOWNLOADREQUEST_H
00025 
00026 #include "backends/networking/curl/request.h"
00027 #include "backends/networking/curl/networkreadstream.h"
00028 #include "backends/cloud/storage.h"
00029 #include "common/file.h"
00030 
00031 namespace Cloud {
00032 
00033 #define DOWNLOAD_REQUEST_BUFFER_SIZE 1 * 1024 * 1024
00034 
00035 class DownloadRequest: public Networking::Request {
00036     Storage::BoolCallback _boolCallback;
00037     Common::DumpFile *_localFile;
00038     Common::String _remoteFileId;
00039     Storage *_storage;
00040     Networking::NetworkReadStream *_remoteFileStream;
00041     Request *_workingRequest;
00042     bool _ignoreCallback;
00043     byte *_buffer;
00044 
00045     void start();
00046     void streamCallback(Networking::NetworkReadStreamResponse response);
00047     void streamErrorCallback(Networking::ErrorResponse error);
00048     void finishDownload(bool success);
00049     virtual void finishError(Networking::ErrorResponse error);
00050 
00051 public:
00052     DownloadRequest(Storage *storage, Storage::BoolCallback callback, Networking::ErrorCallback ecb, Common::String remoteFileId, Common::DumpFile *dumpFile);
00053     virtual ~DownloadRequest();
00054 
00055     virtual void handle();
00056     virtual void restart();
00057 
00059     double getProgress() const;
00060 };
00061 
00062 } // End of namespace Cloud
00063 
00064 #endif


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