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CLOUD: Add IdDownloadRequest and IdStreamFileRequest

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Used for downloading files in Box.
This commit is contained in:
Alexander Tkachev 2016-07-13 15:48:55 +06:00
parent 34ee1d29d5
commit 19ae61dffc
8 changed files with 331 additions and 9 deletions
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91
backends/cloud/id/idstreamfilerequest.cpp Normal file
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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "backends/cloud/id/idstreamfilerequest.h"
#include "backends/cloud/id/idstorage.h"
namespace Cloud {
namespace Id {
IdStreamFileRequest::IdStreamFileRequest(IdStorage *storage, Common::String path, Networking::NetworkReadStreamCallback cb, Networking::ErrorCallback ecb):
Networking::Request(nullptr, ecb), _requestedFile(path), _storage(storage), _streamCallback(cb),
_workingRequest(nullptr), _ignoreCallback(false) {
start();
}
IdStreamFileRequest::~IdStreamFileRequest() {
_ignoreCallback = true;
if (_workingRequest) _workingRequest->finish();
delete _streamCallback;
}
void IdStreamFileRequest::start() {
//cleanup
_ignoreCallback = true;
if (_workingRequest) _workingRequest->finish();
_workingRequest = nullptr;
_ignoreCallback = false;
//find file's id
Storage::UploadCallback innerCallback = new Common::Callback<IdStreamFileRequest, Storage::UploadResponse>(this, &IdStreamFileRequest::idResolvedCallback);
Networking::ErrorCallback innerErrorCallback = new Common::Callback<IdStreamFileRequest, Networking::ErrorResponse>(this, &IdStreamFileRequest::idResolveFailedCallback);
_workingRequest = _storage->resolveFileId(_requestedFile, innerCallback, innerErrorCallback);
}
void IdStreamFileRequest::idResolvedCallback(Storage::UploadResponse response) {
_workingRequest = nullptr;
if (_ignoreCallback) return;
Networking::NetworkReadStreamCallback innerCallback = new Common::Callback<IdStreamFileRequest, Networking::NetworkReadStreamResponse>(this, &IdStreamFileRequest::streamFileCallback);
Networking::ErrorCallback innerErrorCallback = new Common::Callback<IdStreamFileRequest, Networking::ErrorResponse>(this, &IdStreamFileRequest::streamFileErrorCallback);
_workingRequest = _storage->streamFileById(response.value.id(), innerCallback, innerErrorCallback);
}
void IdStreamFileRequest::idResolveFailedCallback(Networking::ErrorResponse error) {
_workingRequest = nullptr;
if (_ignoreCallback) return;
finishError(error);
}
void IdStreamFileRequest::streamFileCallback(Networking::NetworkReadStreamResponse response) {
_workingRequest = nullptr;
if (_ignoreCallback) return;
finishStream(response.value);
}
void IdStreamFileRequest::streamFileErrorCallback(Networking::ErrorResponse error) {
_workingRequest = nullptr;
if (_ignoreCallback) return;
finishError(error);
}
void IdStreamFileRequest::handle() {}
void IdStreamFileRequest::restart() { start(); }
void IdStreamFileRequest::finishStream(Networking::NetworkReadStream *stream) {
Request::finishSuccess();
if (_streamCallback) (*_streamCallback)(Networking::NetworkReadStreamResponse(this, stream));
}
} // End of namespace Id
} // End of namespace Cloud