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/*
* Copyright (C) 2019 ~ 2020 Uniontech Software Technology Co.,Ltd.
*
* Author: zyc <zyc@uniontech.com>
*
* Maintainer: zyc <zyc@uniontech.com>
*
* 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 3 of the License, or
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "viewapplication.h"
#include <QDebug>
#include <QFile>
#include <QProcess>
#include <QString>
#include <QStringList>
#include <QThread>
#include <QCommandLineParser>
#include <QSharedMemory>
#include <QBuffer>
#include <QDataStream>
#include <iostream>
#include<signal.h>
ViewApplication::ViewApplication(int &argc, char **argv): QCoreApplication(argc, argv),m_commondM(new QSharedMemory())
{
QCommandLineParser parser;
parser.process(*this);
const QStringList fileList = parser.positionalArguments();
if (fileList.count() < 2) {
qDebug() << "less than 2";
return ;
}
QStringList arg;
if (fileList[0] == "dmesg") {
arg << "-c"
<< "dmesg -r";
} else {
arg << "-c" << QString("cat %1").arg(fileList[0]);
}
m_proc = new QProcess(this);
m_commondM->setKey(fileList[1]);
m_commondM->create(sizeof(ShareMemoryInfo));
if (m_commondM->isAttached()) //检测程序当前是否关联共享内存
m_commondM->detach(); //解除关联
m_commondM->attach(QSharedMemory::ReadOnly);
connect(m_proc, &QProcess::readyReadStandardOutput, this, [ = ] {
if (!getControlInfo().isStart)
{
m_proc->kill();
releaseMemery();
exit(0);
}
QByteArray byte = m_proc->readAll();
std::cout << byte.replace('\u0000', "").data();
});
m_proc->start("/bin/bash", arg);
m_proc->waitForFinished(-1);
m_proc->close();
}
ViewApplication::~ViewApplication()
{
releaseMemery();
}
void ViewApplication::releaseMemery()
{
if (m_commondM) {
// m_commondM->unlock();
if (m_commondM->isAttached()) //检测程序当前是否关联共享内存
m_commondM->detach(); //解除关联
m_commondM->deleteLater();
}
}
ViewApplication::ShareMemoryInfo ViewApplication::getControlInfo()
{
ShareMemoryInfo defaultInfo;
defaultInfo.isStart = false;
if (m_commondM && m_commondM->isAttached()) {
m_commondM->lock();
ShareMemoryInfo *m_pShareMemoryInfo = static_cast<ShareMemoryInfo *>(m_commondM->data());
defaultInfo = m_pShareMemoryInfo ? *m_pShareMemoryInfo : defaultInfo;
m_commondM->unlock();
return defaultInfo;
}
return defaultInfo;
}
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