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 !!!