Problem Statement:
Write a program in C++ /Python to analyze email header.
Mainwindow.h
Write a program in C++ /Python to analyze email header.
PROGRAM
Mainwindow.h
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QCoreApplication>
QImage img(600,600,QImage::Format_ARGB32);
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
img.fill(Qt::white);
for(int l=150;l<450;l++)
//vertical line
{
img.setPixel(30,l,qRgb(0,0,0));
}
for(int n=5;n<650;n++) //horizontal line
{
img.setPixel(n,300,qRgb(0,0,0));
}
ui->label->setPixmap(QPixmap::fromImage(img));
connect(ui->sampling,SIGNAL(clicked()),this,SLOT(sampling()));
connect(ui->Quantization,SIGNAL(clicked()),this,SLOT(quantization()));
connect(ui->Encoding,SIGNAL(clicked()),this,SLOT(encoding()));
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::input()
{
Fm=ui->lineEdit_freq->text().toInt();
A=ui->lineEdit_amp->text().toInt();
Fs=ui->lineEdit_sfreq->text().toInt();
r=Fs/Fm;
if (Fs<=Fm)
{
QMessageBox::warning(this,"Error","Sampling frequency should be at least twice of Frequency");
}
}
void MainWindow::analog()
{
}
void MainWindow::sampling()
{
input();
r=(2*Fs)/Fm;
for(int i=0;i<480;i++)
{
int x=A*sin(2*PI*Fm*i);
Y[i]=300-x;
X[i]=30+i;
img.setPixel(X[i],Y[i],qRgb(255,0,0));
ui->label->setPixmap(QPixmap::fromImage(img));
}
//--------------------
}
void MainWindow::quantization()
{
for(int i=0;i<480;i+=r)
{
img.setPixel(X[i],Y[i],qRgb(0,0,0));
for (int j=200;j<=400;j++)
{
img.setPixel(X[i],j,qRgb(0,0,0));
}
ui->label->setPixmap(QPixmap::fromImage(img));
}
delta=A/4;
ui->label->setPixmap(QPixmap::fromImage(img));
//--------------------------
}
void MainWindow::encoding()
{
QImage img2(300,300,QImage::Format_ARGB32);
QRgb f;
f=qRgb(0,0,0);
int d=Fm/Fs;
int e=(2*A)/3;
for(int i=d;i<300;i++)
{
y=A*sin((2*3.14*Fm*i)/Fs);
//+ cycle
if(y+A<e)
{
for(int k=0;k<A;k++)
{
img2.setPixel(i,k,f);
}
i+=d;
s=s.append("11");
}
else if(y+A<A)
{
for(int k=2*e;k<A;k++)
{
img2.setPixel(i,k,f);
}
i+=d;
s=s.append("10");
}
else if(y+A<2*e)
{
for(int k=A;k<2*e;k++)
{
img2.setPixel(i,k,f);
}
i+=d;
s=s.append("01");
}
else
{
for(int k=2*e;k<2*A;k++)
{
img2.setPixel(i,k,f);
}
i+=d;
s=s.append("00");
}
}
ui->label2->setText(s);
QString filename ="F:\\QT\\myPCM\\encodeddata.txt";
QFile file(filename);
if ( file.open(QIODevice::WriteOnly | QIODevice::Text))
{
QTextStream stream( &file );
stream << s << endl;
file.close();
}
file.close();
}
Mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(emailheader()));
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::emailheader()
{
QString path=ui->lineEdit->text();
string p=path.toStdString().c_str();
ifstream in(p.c_str(),ios::in);
string sender,receiver,mesId,sub,recdate,mime_ver,from,to;
string temp1[2];
int i=0;
while(in>>temp1[i])
{
if(temp1[i].compare("Delivered-To:")==0)
getline(in,receiver);
else if(temp1[i].compare("Return-Path:")==0)
getline(in,sender);
else if(temp1[i].compare("Date:")==0)
getline(in,recdate);
else if(temp1[i].compare("Message-ID:")==0)
getline(in,mesId);
else if(temp1[i].compare("Subject:")==0)
getline(in,sub);
else if(temp1[i].compare("MIME-Version:")==0)
getline(in,mime_ver);
else if(temp1[i].compare("From:")==0)
getline(in,from);
else if(temp1[i].compare("To:")==0)
getline(in,to);
}
QString r = receiver.c_str();
QString s = sender.c_str();
QString m = mesId.c_str();
QString su = sub.c_str();
QString re = recdate.c_str();
QString mi = mime_ver.c_str();
QString fr = from.c_str();
QString t = to.c_str();
ui->deliver->setText(r);
ui->return_2->setText(s);
ui->messid->setText(m);
ui->subject->setText(su);
ui->dat->setText(re);
ui->mime->setText(mi);
ui->from->setText(fr);
ui->to->setText(t);
}
OUTPUT
