#pragma once

#include "span.hpp"

namespace hv {
  /// Print a single screen
  void print_screen(const span<unsigned char> bytes, unsigned long offset);

  inline void lookup_hex_string(std::uint64_t x, char* s)
  {
    static const char digits[513] =
      "000102030405060708090a0b0c0d0e0f"
      "101112131415161718191a1b1c1d1e1f"
      "202122232425262728292a2b2c2d2e2f"
      "303132333435363738393a3b3c3d3e3f"
      "404142434445464748494a4b4c4d4e4f"
      "505152535455565758595a5b5c5d5e5f"
      "606162636465666768696a6b6c6d6e6f"
      "707172737475767778797a7b7c7d7e7f"
      "808182838485868788898a8b8c8d8e8f"
      "909192939495969798999a9b9c9d9e9f"
      "a0a1a2a3a4a5a6a7a8a9aaabacadaeaf"
      "b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
      "c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
      "d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
      "e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
      "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff";
    int i = 7;
    const char *lut = (const char *)digits;
    while (i >= 0)
      {
	int pos = (x & 0xFF) * 2;
	char ch = lut[pos];
#ifdef DEBUG
	if ( (i*2+1) >=16) std::terminate();
#endif
	s[i * 2] = ch;

	ch = lut[pos + 1];
	s[i * 2 + 1] = ch;

	x >>= 8;
	i -= 1;
      }
  }
}