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namelist.cpp
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namelist.cpp
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// namelsit.cpp : Defines the entry point for the console application.
//
/*
butterfly team
wafaa ismail
sec 2
*/
#include "stdafx.h"
#include <iostream>
#include <fstream>
#include <bitset>
using namespace std;
#define s 8
#define m 4
int counter0 = 0; // num of 0
char value ; //value to encode
int coun1 = 0; //num of 1
int flag = 0; //detect 1 cases
bitset<s> to_binary(char c) //convert input char to 8 bit ascii
{
bitset<s> b1(c);
return b1;
}
bitset<m> dectobinary(int count) // covert num of zeros or ones to 4 bit to make it encoded
{
bitset<m> b(count);
return b;
}
fstream e;
void Display(int n) //write compressed text at final file
{
if (!e.is_open())
{
e.open("compresed.txt", ios::app);
}
e << dectobinary(n);
e.close();
}
void counterCheck() //check counter of 0 , 1 to make a desion according to algorithm
{
while (counter0 % 15 != 0) // check 0 conter cases
{
Display(counter0);
counter0 = counter0 - 15;
if (counter0 < 0)
break;
}
if (coun1 >= 2) // work to print 0000 if 11
{
Display(0);
}
}
double op = 0;
void Encoding() //comprission
{
bool toggle = false; // flag to indicate 1 positions
fstream f1;
f1.open("binary.txt", ios::in); //open 8 bit file
if (!f1.is_open())
{
cout << "the problem binary file at Encoding! " << endl;
}
while (!f1.eof()) //Do until file binary is end
{
value = f1.get(); // read char by char from binary file
op += 1;
//cout << value;
if (value =='0') // value Read is 0
{
if (toggle == false && flag >= 1) // use to toggle if the last value is 1
{
counterCheck();
}
toggle = true;
coun1 = 0;
++counter0;
flag++;
}
else //value read is 1
{
if (toggle == true) //if the last value is 0
{
counterCheck();
}
toggle = false;
counter0 = 0;
if (flag == 0 && coun1 == 0) //check to cover 11 n condition
{
counterCheck();
++coun1;
}
else
{
++coun1; // inc num of 1
}
}
}
if (value +1 == 0) //check if the last value is 1
Display(0);
f1.close(); //close file
}
double ip = 0;
void read_file() //read name list file as input
{
char my_char;
fstream fin;
fstream fout;
fout.open("binary.txt", ios::out); //open binary file to save valuse of 8 bit ascii
if (!fout.is_open())
{
cout << " the problem is at binary file ! " << endl;
}
fin.open("namelist.txt", ios::in); // open file input
if (!fin.is_open())
{
cout << " the problem is at name list file ! " << endl;
}
while (fin.get(my_char)) //read values
{
ip += 8;
if (my_char == ' '||my_char =='\n') continue; //escape spaces and end of line
cout << "wait until finish coverting ..." << endl;
fout << to_binary(my_char); //save 8 bit at binary
//cout << to_binary(my_char) << endl; //to consol
}
fin.close(); //close file name list
fout.close(); //close binary
}
int main()
{
read_file();
Encoding();
cout << "the Ratio is " << op/ip<<endl; //print the comprission ratio
while (true)
{
//open console for any warning
}
return 0;
}