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#include <types.h>
#include <libk/string.h>
size_t strlen(const char* s)
{
if (s == NULL)
return 0;
char *p = (char*)s;
while (*p) p++;
return (size_t)(p - s);
}
uint64_t stoi(const char *s)
{
uint64_t num = 0;
size_t n = strlen(s);
for (size_t i = 0; i < n; i++) {
num *= 10;
num += (uint64_t)(s[i] - '0');
}
return num;
}
void strrev(char *s)
{
size_t n = strlen(s);
char a[100];
for (size_t i = 0; i < n; i++) {
a[i] = s[n - 1 - i];
}
for (size_t i = 0; i < n; i++) {
s[i] = a[i];
}
}
void itos(uint64_t num, char* s)
{
if (num == 0) {
s[0] = '0';
s[1] = '\0';
return;
}
size_t i;
for (i = 0; num; num /= 10, i++) {
s[i] = (char)('0' + num % 10);
}
s[i] = '\0';
strrev(s);
}
void itoh(uint64_t num, char* s)
{
if (num == 0) {
s[0] = '0';
s[1] = '\0';
return;
}
size_t i;
for (i = 0; num; num /= 16, i++) {
if (num % 16 < 10)
s[i] = (char)('0' + num % 16);
else
s[i] = (char)('A' + num % 16 - 10);
}
s[i] = '\0';
strrev(s);
}
void memcpy(const void* destptr, const void* srcptr, size_t n)
{
if (destptr == NULL || srcptr == NULL)
return;
uint8_t* dest = (uint8_t*)destptr;
const uint8_t* src = (const uint8_t*)srcptr;
for(size_t i = 0; i < n; i++) {
dest[i] = src[i];
}
}
void memset(const void* destptr, uint8_t value, size_t n)
{
uint8_t* dest = (uint8_t*)destptr;
for (size_t i = 0; i < n; i++) {
dest[i] = value;
}
}
int32_t memcmp(const void* aptr, const void* bptr)
{
const uint8_t* a = (const uint8_t*)aptr;
const uint8_t* b = (const uint8_t*)bptr;
const size_t len_a = strlen((char*)a);
const size_t len_b = strlen((char*)b);
for (size_t i = 0; i < len_a && i < len_b; i++) {
if (a[i] != b[i])
return a[i] - b[i];
}
if (len_a < len_b) {
return -1;
}
if (len_a > len_b) {
return 1;
}
return 0;
}
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