transforming a binary file in a string of 0s and 1s

[X~coder]

helo all

i need urgent help

i'm trying to tranform a binary file in a sting of 0s and 1s .
ex: i have the file vvv.ecc how can i tranform it in a strig of 0s and 1s and then put the sting in a txt file?
and then from that strig to be able to creat the file vvv.ecc exactly as it was?

pls give the exact code in C++ ( os= xp ) and some specifications ( i' m a nooby but i'm trying to learn :)

[ltgbau]

#include <stdio.h>
#include <conio.h>
#include <io.h>
 
char* BYTE2Bin(BYTE val)
{
    char *temp=(char*)calloc(8, sizeof(char));
    for(int i=0; i<8; i++)
    {
        if(((val>>i)&0x01)==1)
            temp[7-i]=0x31;
        else
            temp[7-i]=0x30;
    }
    return temp;
}
void Encode(char *infile, char *outfile)
{
    FILE *file=NULL;
    fopen_s(&file, infile, "rb");
    if(file==NULL)
    {
        cout<<"Error when open file";
        return;
    }
    long filesize=_filelength(file->_file);
    if(filesize<=0)
    {
        cout<<"File length invalid";
        fclose(file);
        return;
    }
    BYTE *buf=(BYTE*)calloc(filesize, sizeof(BYTE));
    if(fread(buf, sizeof(BYTE), filesize, file)<=0)
    {
        cout<<"Error when read file";
        fclose(file);
        free(buf);
        buf=NULL;
        return;
    }
    fclose(file);
    file=NULL;
    // read successfully
    fopen_s(&file, outfile, "wt");
    char *temp=NULL;
    for(int i=0; i<filesize; i++)
    {
        temp=BYTE2Bin(buf[i]);
        fwrite(temp, 8, 1, file);
        free(temp);
        temp=NULL;
    }
    fclose(file);
    file=NULL;
    free(buf);
    buf=NULL;
}
 
void Decode(char *infile, char *outfile)
{
    FILE *file=NULL;
    fopen_s(&file, infile, "rb");
    if(file==NULL)
    {
        cout<<"Error when open file";
        return;
    }
    long filesize=_filelength(file->_file);
    if(filesize<=0)
    {
        cout<<"File length invalid";
        fclose(file);
        return;
    }
    BYTE *buf=(BYTE*)calloc(filesize, sizeof(BYTE));
    if(fread(buf, sizeof(BYTE), filesize, file)<=0)
    {
        cout<<"Error when read file";
        fclose(file);
        free(buf);
        buf=NULL;
        return;
    }
    fclose(file);
    file=NULL;
    // read successfully
    fopen_s(&file, outfile, "wb");
    BYTE temp=0;
    BYTE cnt=0;
    for(int i=0; i<filesize; i++)
    {
        temp|=((buf[i]-0x30)<<(7-cnt));
        cnt++;
        if(cnt==8)
        {
            fwrite(&temp, 1, 1, file);
            cnt=0;
            temp=0;
        }
    }
    fclose(file);
    file=NULL;
    free(buf);
    buf=NULL;
}
 
void main()
{
    Encode("c:\\input.txt", "C:\\encode.txt");
    Decode("C:\\encode.txt", "c:\\decode.jpg");
    _getch();
}

[dush]

Hi

This code will read from your binary file "vvv.ecc" and store binary representation of its bytes in "out.txt"

for example:

vvv.ecc :
abcdefgh

out.txt:

01100001 01100010 01100011 01100100 01100101 01100110 01100111 01101000

#include <iostream>
#include <fstream>
using namespace std;
 
int main () {
  int length;
  char* buffer;
 
  ifstream is;  
  is.open ("vvv.ecc", ios::binary);
 
  is.seekg (0, ios::end);
  length = is.tellg();
  is.seekg (0, ios::beg);
 
  buffer = new char [length];
 
  is.read (buffer, length);
  is.close();
 
  ofstream os;
  os.open ("out.txt", ios::out);  
 
  char* c = buffer; 
  while(length--)
  {    
    for (int i = 0; i < 8; i++)
      os << (((*c<<i)&128) == 128 ? 1 : 0);         
    c++;
    os << " "; 
  }  
 
  delete [] buffer;
  os.close();  
  return 0;
}
 

Try to do backward convertion. Post here if u have problem.

[X~coder]

thanks !!!