cabinet/main.cpp


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#include <cabinet/magic.hpp>

#include <fcntl.h>

#include <cstdlib>
#include <iostream>
#include <print>

using flags = cab::magic::flags;

auto main(int argc, char ** argv) -> int
{
  if (argc != 2)
  {
    std::println(std::cerr, "Expected a filename");
    return EXIT_FAILURE;
  }

  auto magic = cab::magic::open(flags::follow_symlinks | flags::mime_type | flags::forward_errors);
  if (!magic)
  {
    std::println(std::cerr, "Failed to initialize libmagic: {}", magic.error().message());
    return EXIT_FAILURE;
  }

  auto fd = open(argv[1], O_RDONLY);
  auto mime_type = magic->process(fd);
  if (!mime_type)
  {
    std::println(std::cerr, "Failed to determine file type: {}", mime_type.error());
    return EXIT_FAILURE;
  }
  std::println("{}: {}", argv[1], mime_type.value());
}