Allegro 5 api
#include <allegro5/allegro.h> const ALLEGRO_USTR *al_ref_buffer(ALLEGRO_USTR_INFO *info, const char *s, size_t size)
Create a string that references the storage of an underlying buffer. The size of the buffer is given in bytes. You can use it to reference only part of a string or an arbitrary region of memory.
The string is valid while the underlying memory buffer is valid.
al_ref_cstr(3alleg5), al_ref_ustr(3alleg5)