ft_memccpy - kibotrel/42-Libft GitHub Wiki
void *ft_memccpy(void *dst, const void *src, int c, size_t n)
Description :
Copies at most n bytes from memory area src to dst one. This process ends if n bytes are copied or whenever the byte c is found in dst area.
Return Value :
Returns a pointer on the first byte after c in dst if encountered else NULL is returned.