busybox/libbb/bb_asprintf.c
Rob Landley 1f305dc0fd Portability patch from rfelker. The bb_asprintf.c thing needs an eventual
follow up in platform.h to set the #ifdef, but the workaround works for
everybody, so...
2006-03-09 22:21:20 +00:00

35 lines
605 B
C

/*
Copyright (C) 2002,2005 Vladimir Oleynik <dzo@simtreas.ru>
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include "libbb.h"
char *bb_xasprintf(const char *format, ...)
{
va_list p;
int r;
char *string_ptr;
#ifdef HAVE_GNU_EXTENSIONS
va_start(p, format);
r = vasprintf(&string_ptr, format, p);
va_end(p);
#else
va_start(p, format);
r = vsnprintf(NULL, 0, format, p);
va_end(p);
string_ptr = xmalloc(r+1);
va_start(p, format);
r = vsnprintf(string_ptr, r+1, format, p);
va_end(p);
#endif
if (r < 0) {
bb_perror_msg_and_die("bb_xasprintf");
}
return string_ptr;
}