文件CheckSum累加和校驗計算

文件累加和校驗計算

#include "mainwindow.h"

#include "ui_mainwindow.h"

#include <QDebug>

MainWindow::MainWindow(QWidget *parent) :

    QMainWindow(parent),

    ui(new Ui::MainWindow)

{

    ui->setupUi(this);

}

MainWindow::~MainWindow()

{

    delete ui;

}

void MainWindow::on_action_O_triggered()

{

    filename = QFileDialog::getOpenFileName(this,

            tr("Open Bin File"),".",

            tr("Bin files(*.bin)"));

    if(!filename.isEmpty())

        ui->lineEdit->setText(filename);

}

int MainWindow::CHECKSUM(QByteArray buf)

{

    int sum = 0;

    for(int i = 0; i < buf.size(); i++)

    {

        sum += buf.at(i) & 0x000000FF;

    }

    return sum;

}

void MainWindow::on_pushButton_Open_clicked()

{

    on_action_T_triggered();

}

void MainWindow::on_action_T_triggered()

{

    QString scrFile = ui->lineEdit->text();

    //讀二進制文件

    QFile rfile(scrFile);

    if(!rfile.open(QIODevice::ReadOnly))

    {

        QMessageBox::critical(this,"Warning", "Can't open file for reading",QMessageBox::Ok);

        rfile.close();

        return;

    }

    int sum = CHECKSUM(rfile.readAll());

    QString temp2 = QString::number(sum, 16);

    ui->lineEdit_2->setText("0x" + temp2);

    rfile.close();

}

包含頭文件：

#ifndef MAINWINDOW_H

#define MAINWINDOW_H

#include <QMainWindow>

#include <QFileDialog>

#include <QMessageBox>

namespace Ui {

class MainWindow;

}

class MainWindow : public QMainWindow

{

    Q_OBJECT

public:

    explicit MainWindow(QWidget *parent = 0);

    ~MainWindow();

    int CHECKSUM(QByteArray buf);

private slots:

    void on_action_O_triggered();

    void on_pushButton_Open_clicked();

    void on_action_T_triggered();

private:

    Ui::MainWindow *ui;

    QLabel *label;

    QImage image;

    QString filename;

};

#endif // MAINWINDOW_H