mirror of
https://github.com/libretro/scummvm.git
synced 2025-02-03 09:23:37 +00:00
eb63b50b7f
Added ErrorResponse and ErrorCallback. Each Request now has an ErrorCallback, which should be called instead of usual callback in case of failure.
122 lines
4.0 KiB
C++
122 lines
4.0 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "backends/cloud/downloadrequest.h"
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#include "backends/networking/curl/connectionmanager.h"
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#include "common/debug.h"
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#include "common/textconsole.h"
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namespace Cloud {
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DownloadRequest::DownloadRequest(Storage *storage, Storage::BoolCallback callback, Networking::ErrorCallback ecb, Common::String remoteFile, Common::DumpFile *dumpFile):
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Request(nullptr, ecb), _boolCallback(callback), _localFile(dumpFile), _remoteFileName(remoteFile), _storage(storage),
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_remoteFileStream(nullptr), _workingRequest(nullptr), _ignoreCallback(false) {
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start();
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}
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DownloadRequest::~DownloadRequest() {
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_ignoreCallback = true;
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if (_workingRequest) _workingRequest->finish();
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delete _boolCallback;
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delete _localFile;
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}
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void DownloadRequest::start() {
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_ignoreCallback = true;
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if (_workingRequest) _workingRequest->finish();
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_remoteFileStream = nullptr;
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//TODO: reopen DumpFile
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_ignoreCallback = false;
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_workingRequest = _storage->streamFile(
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_remoteFileName,
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new Common::Callback<DownloadRequest, Networking::NetworkReadStreamResponse>(this, &DownloadRequest::streamCallback),
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new Common::Callback<DownloadRequest, Networking::ErrorResponse>(this, &DownloadRequest::streamErrorCallback)
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);
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}
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void DownloadRequest::streamCallback(Networking::NetworkReadStreamResponse response) {
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_workingRequest = nullptr;
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if (_ignoreCallback) return;
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_remoteFileStream = (Networking::NetworkReadStream *)response.value;
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}
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void DownloadRequest::streamErrorCallback(Networking::ErrorResponse error) {
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_workingRequest = nullptr;
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if (_ignoreCallback) return;
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finishError(error);
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}
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void DownloadRequest::handle() {
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if (!_localFile) {
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warning("DownloadRequest: no file to write");
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finishError(Networking::ErrorResponse(this, false, true, "", -1));
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return;
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}
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if (!_localFile->isOpen()) {
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warning("DownloadRequest: failed to open file to write");
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finishError(Networking::ErrorResponse(this, false, true, "", -1));
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return;
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}
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if (!_remoteFileStream) {
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//waiting for callback
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return;
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}
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const int kBufSize = 640 * 1024; //640 KB is enough to everyone?..
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char buf[kBufSize];
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uint32 readBytes = _remoteFileStream->read(buf, kBufSize);
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if (readBytes != 0)
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if (_localFile->write(buf, readBytes) != readBytes) {
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warning("DownloadRequest: unable to write all received bytes into output file");
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finishError(Networking::ErrorResponse(this, false, true, "", -1));
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return;
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}
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if (_remoteFileStream->eos()) {
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if (_remoteFileStream->httpResponseCode() != 200) {
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warning("HTTP response code is not 200 OK (it's %ld)", _remoteFileStream->httpResponseCode());
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//TODO: do something about it actually
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}
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finishSuccess(_remoteFileStream->httpResponseCode() == 200);
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_localFile->close(); //yes, I know it's closed automatically in ~DumpFile()
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}
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}
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void DownloadRequest::restart() {
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warning("DownloadRequest: can't restart as there are no means to reopen DumpFile");
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finishError(Networking::ErrorResponse(this, false, true, "", -1));
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//start();
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}
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void DownloadRequest::finishSuccess(bool success) {
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Request::finishSuccess();
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if (_boolCallback) (*_boolCallback)(Storage::BoolResponse(this, success));
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}
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} // End of namespace Cloud
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