#ifndef _HEXDUMP_H_
#define _HEXDUMP_H_
#include <stdlib.h>
#include <stdint.h>
void hexdump(void *data, size_t len);
void rgbdump(void *data, uint16_t w, uint16_t h);
void rgbadump(void *data, uint16_t w, uint16_t h);
#endif

#ifdef HEXDUMP_IMPLEMENTATION
#if !defined(HEXDUMP_COLORS0) && !defined(HEXDUMP_COLORS1)
#define HEXDUMP_N_COLORS 8
const uint8_t hexdump_colors[2][8] = {
  { 197, 215, 227, 47, 39, 57, 135, 92 },
  { 124, 214, 226, 46, 31, 55, 127, 53 },
};
#else
#define HEXDUMP_RAINBOW
#ifndef HEXDUMP_N_COLORS
#define HEXDUMP_N_COLORS 8
#endif
const uint8_t hexdump_colors[2][HEXDUMP_N_COLORS] = {
  HEXDUMP_COLORS0,
  HEXDUMP_COLORS1,
};
#endif
#include <stdio.h>
void hexdump(void *data, size_t len)
{
  uint8_t *ptr = data;
  for (size_t i = 0; i < len;)
  {
#ifdef HEXDUMP_RAINBOW
    printf("\033[%dm%08zx\033[0m\t", ((i >> 4) & 1 ? 90 : 37), i);
#else
    printf("%08zx\t", i);
#endif
    for (int x = 0; x < 16; x++)
    {
#ifdef HEXDUMP_RAINBOW
      printf("\033[38;5;%dm",
          hexdump_colors[(i >> 4) & 1][(x + i) % HEXDUMP_N_COLORS]);
#endif
      if (i + x >= len) printf("-- ");
      else printf("%02x ", ptr[i + x]);
#ifdef HEXDUMP_RAINBOW
      printf("\033[0m");
#endif
      if (x % 4 == 3) printf("\t");
    }
#ifdef HEXDUMP_PRINTABLE
    for (int x = 0; x < 16; x++)
    {
      if (i + x >= len) break;
#ifdef HEXDUMP_RAINBOW
      printf("\033[38;5;%dm",
          hexdump_colors[(i >> 4) & 1][(x + i) % HEXDUMP_N_COLORS]);
#endif
      if (isprint(ptr[i + x]))
        putchar(ptr[i + x]);
      else
        putchar('.');
#ifdef HEXDUMP_RAINBOW
      printf("\033[0m");
#endif
    }
#endif
    printf("\n");
    i += 16;
  }
}

void rgbdump(void *data, uint16_t w, uint16_t h)
{
  uint8_t *ptr = data;
  for (int y = 0; y < h; y += 2)
  {
    for (int x = 0; x < w; x++)
    {
      int i1 = x + y * w, i2 = x + (y + 1) * w;
      printf("\033[38;2;%d;%d;%d;48;2;%d;%d;%dm\xe2\x96\x80",
             ptr[i1 * 3 + 0], ptr[i1 * 3 + 1], ptr[i1 * 3 + 2],
             ptr[i2 * 3 + 0], ptr[i2 * 3 + 1], ptr[i2 * 3 + 2]);
    }
    printf("\033[0m\n");
  }
}

void rgbadump(void *data, uint16_t w, uint16_t h)
{
  uint8_t *ptr = data;
  for (int y = 0; y < h; y += 2)
  {
    for (int x = 0; x < w; x++)
    {
      int i1 = x + y * w, i2 = x + (y + 1) * w;
      printf("\033[38;2;%d;%d;%d;48;2;%d;%d;%dm\xe2\x96\x80",
             ptr[i1 * 4 + 0], ptr[i1 * 4 + 1], ptr[i1 * 4 + 2],
             ptr[i2 * 4 + 0], ptr[i2 * 4 + 1], ptr[i2 * 4 + 2]);
    }
    printf("\033[0m\n");
  }
}
#endif