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#include <allegro5/allegro.h>
const char *al_cstr(const ALLEGRO_USTR *us)
Get a char * pointer to the data in a string. This pointer will
only be valid while the ALLEGRO_USTR(3alleg5) object is not modified and not
destroyed. The pointer may be passed to functions expecting C-style strings,
with the following caveats:
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- ALLEGRO_USTRs are allowed to contain embedded NUL ('\0') bytes. That means
al_ustr_size(u) and strlen(al_cstr(u)) may not agree.
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- An ALLEGRO_USTR may be created in such a way that it is not NUL
terminated. A string which is dynamically allocated will always be NUL
terminated, but a string which references the middle of another string or
region of memory will not be NUL terminated.
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- If the ALLEGRO_USTR references another string, the returned C string will
point into the referenced string. Again, no NUL terminator will be added
to the referenced string.