Split char* at delimiter in freestanding mode c++ - c++

Question

I am trying to write my own operating system. I have followed the tutorials on the OSDev Wiki, and I am now working on writing a console mode, with commands. I need to be able to split a char* into a char**, without all the library functionality (hence freestanding). I have tried iterating through until I meet my delimiter etc, but however I do it, I just get garbage stuck on the end of my first result. What am I doing wrong? This is what I have so far:
static char** splitStr (char* string, char delim) {
char returner[VGA_WIDTH][255];
int loc = 0;
int innerLoc = 0;
for (int i = 0; string[i] != 0x00; i++) {
char c = string[i];
if (c != delim) {
returner[loc][innerLoc] = c;
innerLoc++;
} else {
print ("a string was ");
println (returner[loc]);
innerLoc = 0;
loc++;
}
}
print ("the first string was ");
println (returner[0]);
return (char**)returner;
}
I am asking a question about how to write a specific function in C++ freestanding mode.

Answer 1

void split(const char* str, const char d, char** into)
{
if(str != NULL && into != NULL)
{
int n = 0;
int c = 0;
for(int i = 0; str[c] != '\0'; i++,c++)
{
into[n][i] = str[c];
if(str[c] == d)
{
into[n][i] = '\0';
i = -1;
++n;
}
}
}
}
I'm allocating using calloc to get rid of garbage characters.
EDIT: You should allocate the pointers inside the char** before writing to them.
void allocarr(char** pointers, int bytes, int slots)
{
int i = 0;
while(i <= slots)
{
pointers[i] = (char*)calloc(1, bytes);
++i;
}
}
...
char** sa = (char**)malloc(50*sizeof(char*));
allocarr(sa, 512, 50);
split("Hello;World;", ';', sa);
puts(sa[0]);