#include <stddef.h>

#include "strings.h"

void uint32_to_dec(uint32_t number, char buf[10])
{
  for (int i = 0; i < 10; i++)
    {
      buf[10 - 1 - i] = number % 10;
      number /= 10;
    }
}

void uint32_to_hex(uint32_t number, char buf[8])
{
  for (int i = 0; i < 8; i++)
    {
      unsigned char quadbit = (number >> ((8 - i - 1) * 4)) & 0xf;
      buf[i] =  quadbit > 9 ? quadbit - 10 + 'a' : quadbit + '0';
    }
}

void uint32_to_bin(uint32_t number, char buf[32])
{
  for (int i = 0; i < 32; i++)
    buf[i] = ((number >> (32 - i - 1)) & 1) ? '1' : '0';
}

void uint32_to_decstring(uint32_t number, char buf[11])
{
  uint32_to_dec(number, buf);
  buf[10] = '\0';
}

void uint32_to_hexstring(uint32_t number, char buf[9])
{
  uint32_to_hex(number, buf);
  buf[9] = '\0';
}

void uint32_to_binstring(uint32_t number, char buf[33])
{
  uint32_to_bin(number, buf);
  buf[32] = '\0';
}

void trim_0s(char string[])
{
  size_t i;
  for (i = 0; string[i] != '\0' && string[i] != '0'; i++);

  size_t j = 0;
  
  if (string[i] == '\0')
    string[j++] = string[i--];

  do
    string[j] = string[i + j];
  while (string[j++]);
}

void uint32_to_decstringt(uint32_t number, char buf[11])
{
  uint32_to_decstring(number, buf);
  trim_0s(buf);
}

void uint32_to_hexstringt(uint32_t number, char buf[9])
{
  uint32_to_hexstring(number, buf);
  trim_0s(buf);
}