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.TH "al_cstr" "3" "" "Allegro reference manual" ""
.SH NAME
.PP
al_cstr \- Allegro 5 API
.SH SYNOPSIS
.IP
.nf
\f[C]
#include\ <allegro5/allegro.h>
const\ char\ *al_cstr(const\ ALLEGRO_USTR\ *us)
\f[]
.fi
.SH DESCRIPTION
.PP
Get a \f[C]char\ *\f[] pointer to the data in a string.
This pointer will only be valid while the ALLEGRO_USTR(3) object is not
modified and not destroyed.
The pointer may be passed to functions expecting C\-style strings, with
the following caveats:
.IP \[bu] 2
ALLEGRO_USTRs are allowed to contain embedded NUL
(\f[C]\[aq]\\0\[aq]\f[]) bytes.
That means \f[C]al_ustr_size(u)\f[] and \f[C]strlen(al_cstr(u))\f[] may
not agree.
.IP \[bu] 2
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 \f[I]not\f[] be NUL terminated.
.IP \[bu] 2
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.
.SH SEE ALSO
.PP
al_ustr_to_buffer(3), al_cstr_dup(3)
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