项目实战：Qt终端命令模拟工具 v1.0.0（实时获取命令行输出，执行指令，模拟ctrl+c中止操作）

需求

  在Qt软件中实现部分终端控制命令行功能，使软件内可以又好的模拟终端控制，提升软件整体契合度。

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Demo演示

  

  

  

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功能描述 v1.0.0

  

• windows版本打开即可实时现实；
• centOS打开抓不到默认的输出只能抓到命令执行的输出结果；
• ubuntu等其他linux-arm没有测试；
• 可以执行单条指令；
• 可以清空模拟ctrl+c结束正在操作的命令；

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项目模块化部署

  

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源码

TerminatorWidget.h

#ifndef TERMINATORWIDGET_H
#define TERMINATORWIDGET_H



#include <QWidget>
#include <QThread>
#include <QTextCursor>

#include "TerminatorManager.h"

namespace Ui {
class TerminatorWidget;
}

class TerminatorWidget : public QWidget
{
    Q_OBJECT

public:
    explicit TerminatorWidget(QWidget *parent = 0);
    ~TerminatorWidget();

protected:
    void initControl();

protected slots:
    void slot_recvData(QByteArray byteArray);
    void slot_recvDataError(QByteArray byteArray);

private slots:
    void on_pushButton_exec_clicked();

    void on_pushButton_stop_clicked();

    void on_pushButton_clear_clicked();

private:
    Ui::TerminatorWidget *ui;

private:
    QThread *_pTerminatorManagerThread;
    TerminatorManager * _pTerminatorManager;
};

#endif // TERMINATORWIDGET_H

TerminatorManager.h

#ifndef TERMINATORMANAGER_H
#define TERMINATORMANAGER_H

#include <QObject>
#include <QProcess>
#include <QTextCodec>

class TerminatorManager : public QObject
{
    Q_OBJECT
public:
    explicit TerminatorManager(QObject *parent = 0);

public:
    bool getRunning() const;
    void wirte(QByteArray byteArray);
    void stop();
    void ctrlC();

signals:
    void signal_recvData(QByteArray byteArray);
    void signal_recvDataError(QByteArray byteArray);

public slots:
    void slot_start();
    void slot_stop();

protected:
    void initControl();

protected slots:
    void slot_stateChanged(QProcess::ProcessState newState);
    void slot_readyReadStandardOutput();
    void slot_readyReadStandardError();
    void slot_write(QByteArray byteArray);
    void slot_ctrlC();

private:
    bool _running;              // 是否运行
    QProcess *_pProcess;        // 进程
    QTextCodec *_pTextCodec;    // 编码，读取数据转化编码时用
};

#endif // TERMINATORMANAGER_H

TerminatorManager.cpp

#include "TerminatorManager.h"

#include <QDebug>
#include <QDateTime>
//#define LOG qDebug()<<__FILE__<<__LINE__
//#define LOG qDebug()<<__FILE__<<__LINE__<<__FUNCTION__
//#define LOG qDebug()<<__FILE__<<__LINE__<<QThread()::currentThread()
//#define LOG qDebug()<<__FILE__<<__LINE__<<QDateTime::currentDateTime().toString("yyyy-MM-dd")
#define LOG qDebug()<<__FILE__<<__LINE__<<QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss:zzz")

TerminatorManager::TerminatorManager(QObject *parent)
    : QObject(parent),
      _running(false),
      _pProcess(0),
      _pTextCodec(0)
{
    initControl();
}

bool TerminatorManager::getRunning() const
{
    return _running;
}

void TerminatorManager::wirte(QByteArray byteArray)
{
    QMetaObject::invokeMethod(this, "slot_write", Q_ARG(QByteArray, byteArray));
}

void TerminatorManager::ctrlC()
{
    QMetaObject::invokeMethod(this, "slot_ctrlC");
}

void TerminatorManager::slot_start()
{
    if(_running)
    {
        LOG << "It's already running!!!";
        return;
    }

    // 初始化子线程中的相关类
    if(!_pProcess)
    {
        _pProcess = new QProcess();
        connect(_pProcess, SIGNAL(stateChanged(QProcess::ProcessState)),
                this, SLOT(slot_stateChanged(QProcess::ProcessState)));
        connect(_pProcess, SIGNAL(readyReadStandardOutput()),
                this, SLOT(slot_readyReadStandardOutput()));
        connect(_pProcess, SIGNAL(readyReadStandardError()),
                this, SLOT(slot_readyReadStandardError()));
#ifndef LINUX
            _pProcess->start("cmd");
            _pProcess->waitForStarted();
#else
//            _pProcess->start("bash");
            _pProcess->start("sh");
            _pProcess->waitForStarted();
#endif
    }

    _running = true;
}

void TerminatorManager::slot_stop()
{
    if(!_running)
    {
        LOG << "It's not running!!!";
        return;
    }
    if(_pProcess)
    {
        _pProcess->kill();
        _pProcess->close();
        _pProcess->waitForFinished();
        _pProcess->deleteLater();
        _pProcess = 0;
    }
    _running = false;
}

void TerminatorManager::initControl()
{
    // linux下有可能获取失败
    _pTextCodec = QTextCodec::codecForName("System");
}

void TerminatorManager::slot_stateChanged(QProcess::ProcessState newState)
{
    LOG << newState;
}

void TerminatorManager::slot_readyReadStandardOutput()
{
    QByteArray byteArray = _pProcess->readAllStandardOutput();
//    QByteArray byteArray = _pProcess->readAll();

    QString str;
    // 转换为unicode
    if(_pTextCodec)
    {
        str = _pTextCodec->toUnicode(byteArray);
    }else{
        str = QString(byteArray);
    }

    emit signal_recvData(str.toUtf8());
}

void TerminatorManager::slot_readyReadStandardError()
{
    QByteArray byteArray = _pProcess->readAllStandardError();

    QString str;
    // 转换为unicode
    if(_pTextCodec)
    {
        str = _pTextCodec->toUnicode(byteArray);
    }else{
        str = QString(byteArray);
    }

    emit signal_recvDataError(str.toUtf8());
}

void TerminatorManager::slot_write(QByteArray byteArray)
{
    if(!_pProcess)
    {
        LOG << "Is't not running";
        return;
    }
    LOG << QString(byteArray);
    LOG << _pProcess;
    _pProcess->write(byteArray);
    LOG;
}

void TerminatorManager::slot_ctrlC()
{
    if(!_running)
    {
        LOG << "It's not running!!!";
        return;
    }
    slot_stop();
    slot_start();
}

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工程模板