mirror of
https://github.com/keepassxreboot/keepassxc.git
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90 lines
2.5 KiB
C++
90 lines
2.5 KiB
C++
/*
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* Copyright (C) 2010 Felix Geyer <debfx@fobos.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 or (at your option)
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* version 3 of the License.
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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, see <http://www.gnu.org/licenses/>.
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*/
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#include "LayeredStream.h"
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LayeredStream::LayeredStream(QIODevice* baseDevice)
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: QIODevice(baseDevice)
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, m_baseDevice(baseDevice)
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{
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connect(baseDevice, SIGNAL(aboutToClose()), SLOT(closeStream()));
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}
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LayeredStream::~LayeredStream()
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{
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close();
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}
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bool LayeredStream::isSequential() const
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{
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return true;
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}
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bool LayeredStream::open(QIODevice::OpenMode mode)
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{
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if (isOpen()) {
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qWarning("LayeredStream::open: Device is already open.");
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return false;
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}
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bool readMode = (mode & QIODevice::ReadOnly);
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bool writeMode = (mode & QIODevice::WriteOnly);
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if (readMode && writeMode) {
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qWarning("LayeredStream::open: Reading and writing at the same time is not supported.");
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return false;
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}
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else if (!readMode && !writeMode) {
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qWarning("LayeredStream::open: Must be opened in read or write mode.");
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return false;
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}
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else if ((readMode && !m_baseDevice->isReadable()) ||
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(writeMode && !m_baseDevice->isWritable())) {
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qWarning("LayeredStream::open: Base device is not opened correctly.");
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return false;
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}
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else {
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if (mode & QIODevice::Append) {
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qWarning("LayeredStream::open: QIODevice::Append is not supported.");
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mode = mode & ~QIODevice::Append;
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}
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if (mode & QIODevice::Truncate) {
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qWarning("LayeredStream::open: QIODevice::Truncate is not supported.");
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mode = mode & ~QIODevice::Truncate;
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}
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mode = mode | QIODevice::Unbuffered;
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return QIODevice::open(mode);
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}
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}
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qint64 LayeredStream::readData(char* data, qint64 maxSize)
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{
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return m_baseDevice->read(data, maxSize);
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}
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qint64 LayeredStream::writeData(const char* data, qint64 maxSize)
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{
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return m_baseDevice->write(data, maxSize);
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}
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void LayeredStream::closeStream()
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{
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close();
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}
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