mirror of
https://github.com/d47081/qBittorrent.git
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89 lines
3.1 KiB
C++
89 lines
3.1 KiB
C++
/*
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* Bittorrent Client using Qt and libtorrent.
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* Copyright (C) 2020 Mike Tzou (Chocobo1)
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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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* In addition, as a special exception, the copyright holders give permission to
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* link this program with the OpenSSL project's "OpenSSL" library (or with
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* modified versions of it that use the same license as the "OpenSSL" library),
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* and distribute the linked executables. You must obey the GNU General Public
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* License in all respects for all of the code used other than "OpenSSL". If you
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* modify file(s), you may extend this exception to your version of the file(s),
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* but you are not obligated to do so. If you do not wish to do so, delete this
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* exception statement from your version.
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*/
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#include "io.h"
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#include <libtorrent/bencode.hpp>
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#include <libtorrent/entry.hpp>
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#include <QByteArray>
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#include <QFileDevice>
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#include <QSaveFile>
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#include <QString>
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Utils::IO::FileDeviceOutputIterator::FileDeviceOutputIterator(QFileDevice &device, const int bufferSize)
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: m_device {&device}
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, m_buffer {std::make_shared<QByteArray>()}
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, m_bufferSize {bufferSize}
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{
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m_buffer->reserve(bufferSize);
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}
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Utils::IO::FileDeviceOutputIterator::~FileDeviceOutputIterator()
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{
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if (m_buffer.use_count() == 1)
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{
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if (m_device->error() == QFileDevice::NoError)
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m_device->write(*m_buffer);
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m_buffer->clear();
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}
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}
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Utils::IO::FileDeviceOutputIterator &Utils::IO::FileDeviceOutputIterator::operator=(const char c)
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{
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m_buffer->append(c);
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if (m_buffer->size() >= m_bufferSize)
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{
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if (m_device->error() == QFileDevice::NoError)
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m_device->write(*m_buffer);
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m_buffer->clear();
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}
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return *this;
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}
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nonstd::expected<void, QString> Utils::IO::saveToFile(const QString &path, const QByteArray &data)
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{
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QSaveFile file {path};
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if (!file.open(QIODevice::WriteOnly) || (file.write(data) != data.size()) || !file.flush() || !file.commit())
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return nonstd::make_unexpected(file.errorString());
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return {};
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}
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nonstd::expected<void, QString> Utils::IO::saveToFile(const QString &path, const lt::entry &data)
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{
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QSaveFile file {path};
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if (!file.open(QIODevice::WriteOnly))
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return nonstd::make_unexpected(file.errorString());
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const int bencodedDataSize = lt::bencode(Utils::IO::FileDeviceOutputIterator {file}, data);
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if ((file.size() != bencodedDataSize) || !file.flush() || !file.commit())
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return nonstd::make_unexpected(file.errorString());
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return {};
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}
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