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#include <cstdlib>
#include <iostream>
#include <stdlib.h>
#include <fstream>
#include <sstream>
#include <string>
#include <cmath>
#include <ctime>
#include <cstdio>
#include <iostream>
// ============================================================================================
// Declare namespace
using namespace std;
// ============================================================================================
// ======================================================================================================================
long long binaryreadwrite(string whatdo, string file1, long long byteposition, long long byte, long long buffersize)
{
char buffer(buffersize);
char pause;
long long byte1 = byte;
long long count1 = byteposition;
long long begin1;
// open file
fstream myfile1(file1.c_str(), ios::out | ios::in | ios::binary);
if (!myfile1)
{
myfile1.close();
cout << "error in line 266" << " " << file1 << "\n";
cin >> pause;
exit(1);
}
if (whatdo == "read")
{
// cout << byte1 << " We are reading bytes " << "\n"; // debug code
myfile1.seekg(count1);
myfile1.read( reinterpret_cast<char*>( &buffer ),buffersize);
begin1 = myfile1.tellg();
byte1 = (int)buffer;
myfile1.close();
myfile1.clear();
myfile1.flush();
return(byte1);
}
if (whatdo == "write")
{
// cout << byte1 << " We are writing bytes " << "\n"; // debug code
buffer = (char)byte1;
myfile1.seekp(count1);
myfile1.write( reinterpret_cast<char*>( &buffer ),buffersize);
begin1 = myfile1.tellp();
myfile1.close();
myfile1.clear();
myfile1.flush();
return(0);
}
cout << "Error in binary read and write" << "\n";
cin >> pause;
exit(1);
}
// ============================================================================================
// declare main
int main (int argc, char *argv[])
{
// Declare variables
long long buffersize;
long long count1;
long long holdme;
long long dummyfile;
long long byte;
string whatdo;
string pause;
string file1;
cout << "What is your buffer size" << "\n";
cin >> holdme;
file1 = "temp.bin";
// open file
fstream myfile1(file1.c_str(), ios::out | ios::binary);
if (!myfile1)
{
myfile1.close();
myfile1.clear();
myfile1.flush();
cout << "error in line 42" << " " << file1 << "\n";
cin >> pause;
exit(1);
}
myfile1.close();
myfile1.clear();
myfile1.flush();
buffersize = holdme; // I have been entering 5 here
byte = 1099511627775; // This should be FFFFFFFFFF in Hexadecimal.
count1 = 0;
whatdo = "write";
dummyfile = binaryreadwrite(whatdo, file1, count1, byte, buffersize);
exit(0);
}
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