#include <fmt/format.h>
#include <fstream>
#include <memory-map.hpp>
#include <hex.hpp>

std::ifstream::pos_type filesize(const char* filename)
{
  std::ifstream in(filename, std::ifstream::ate | std::ifstream::binary);
  return in.tellg(); 
}

inline auto map_file(const char* filename)
{
   return hv::memory_map(filesize(filename), filename);
}

int main(int argc, char** argv)
{
  if(!argv[1]) {
    fmt::print("Usage: {} <file>\n", argv[0]);
    return 1;
  }
  
  auto map = map_file(argv[1]);
  auto memory = map.span();

  hv::print_screen(memory, 0);
  fmt::print("\n");
  
  return 0;
}