firestring_estr_vsprintf - snprintf(3) into an estring
#include <firestring.h>
-lfirestring
long firestring_estr_vsprintf(struct firestring_estr_t
*out, const char * const format, va_list
ap)
firestring_estr_vsprintf() behaves exactly like firestring_snprintf(3)
except that it writes to an estring (which contains the size internally, so
size is not needed as a parameter), and it takes an stdarg object instead of a
list of arguments.
Returns the number of bytes written to out.
Ian Gulliver <ian@penguinhosting.net>