#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <iostream>
using namespace std;

int preprocess(const char * fileName)
{
    struct stat st;
    if (stat(fileName, &st))
    {
        cerr << "Error accessing " << fileName << endl;
        return -1;
    }

    ifstream ifs(fileName);

    if ( ! ifs.is_open() )
    {
        cerr << "Error opening " << fileName << endl;
        return -2;
    }

    char * buff = new char[st.st_size];
    while ( ! ifs.eof() )
    {
        ifs.getline(buff, st.st_size);
    }
    delete[] buff;

    return 0;
}