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#include <lib/math.h>
#include <lib/string.h>
#include <memory/alloc.h>
#include <memory/paging.h>
#include <stdint.h>
static const char ITOA_TABLE[] = "0123456789";
char *itoa(int n)
{
if (!n) {
char *ret = (char *)malloc(2);
ret[0] = '0';
ret[1] = 0;
return ret;
}
u8 negative = (u8)(n < 0);
if (negative)
n *= -1;
int sz;
for (sz = 0; n % pow(10, sz) != n; sz++) {
}
char *ret = (char *)malloc((u32)(sz + 1));
for (int i = 0; i < sz; i++) {
int digit = (n % pow(10, i + 1)) / pow(10, i);
ret[i] = ITOA_TABLE[digit];
}
ret[sz] = 0;
if (negative) {
char *aux = (char *)malloc((u32)(sz + 2));
strcpy(aux, ret);
aux[sz] = '-';
aux[sz + 1] = 0;
free(ret);
ret = aux;
}
strinv(ret);
return ret;
}
// TODO: Rename itoa_base
char *itoa_base(int value, char *result, int base, int is_signed)
{
if (base < 2 || base > 36) {
*result = '\0';
return result;
}
char *ptr = result, *ptr1 = result, tmp_char;
int tmp_value;
do {
tmp_value = value;
value /= base;
*ptr++ = "zyxwvutsrqponmlkjihgfedcba9876543210123456789abcdefghijklmnopqrstuvwxyz"
[35 + (tmp_value - value * base)];
} while (value);
if (is_signed && tmp_value < 0)
*ptr++ = '-';
*ptr-- = '\0';
while (ptr1 < ptr) {
tmp_char = *ptr;
*ptr-- = *ptr1;
*ptr1++ = tmp_char;
}
return result;
}
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