#include <vector>
#include <string>
#include <iostream> // std::cout
#include <fstream>  // ifstream, ofstream
#include <libgen.h> // basename()
#include <iterator>

using namespace std;

ifstream inputFile;
string filePath = "";
vector<unsigned char> buffer;

void checkParameters(int argc, char *argv[])
{
    if (argc != 2)
    {
        cout << "Uso: " << basename(argv[0]) << " FILE" << endl;
        exit(EXIT_FAILURE);
    }
    else
        filePath = argv[1];
}

void loadFile(string s)
{
    inputFile.open(s, ios::binary);
    if (!inputFile.good())
    {
        cout << "No se puede abrir el archivo: " << s << endl;
        exit(EXIT_FAILURE);
    }

    // Copia el stream al buffer
    vector<unsigned char> temp(std::istreambuf_iterator<char>(inputFile), {});
    buffer = temp;
}

void printBuffer()
{
    int count = 0;
    for (auto i : buffer)
    {
        cout << static_cast<unsigned>(i) << " ";
        count++;
        if (count % 16 == 0)
            cout << static_cast<unsigned>(i) << endl;
    }
}

int main(int argc, char *argv[])
{
    checkParameters(argc, argv);
    loadFile(filePath);
    printBuffer();
    cout << "Fin del programa" << endl;
    return 0;
}