/* vsprintf with automatic memory allocation.
- Copyright (C) 2002-2003 Free Software Foundation, Inc.
+ Copyright (C) 2002-2004, 2007-2008 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#ifndef _VASNPRINTF_H
#define _VASNPRINTF_H
#ifndef __attribute__
/* This feature is available in gcc versions 2.5 and later. */
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
# define __attribute__(Spec) /* empty */
# endif
/* The __-protected variants of `format' and `printf' attributes
# endif
#endif
-#ifdef __cplusplus
+#ifdef __cplusplus
extern "C" {
#endif
If successful, return the address of the string (this may be = RESULTBUF
if no dynamic memory allocation was necessary) and set *LENGTHP to the
number of resulting bytes, excluding the trailing NUL. Upon error, set
- errno and return NULL. */
+ errno and return NULL.
+
+ When dynamic memory allocation occurs, the preallocated buffer is left
+ alone (with possibly modified contents). This makes it possible to use
+ a statically allocated or stack-allocated buffer, like this:
+
+ char buf[100];
+ size_t len = sizeof (buf);
+ char *output = vasnprintf (buf, &len, format, args);
+ if (output == NULL)
+ ... error handling ...;
+ else
+ {
+ ... use the output string ...;
+ if (output != buf)
+ free (output);
+ }
+ */
+#if REPLACE_VASNPRINTF
+# define asnprintf rpl_asnprintf
+# define vasnprintf rpl_vasnprintf
+#endif
extern char * asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...)
__attribute__ ((__format__ (__printf__, 3, 4)));
extern char * vasnprintf (char *resultbuf, size_t *lengthp, const char *format, va_list args)
__attribute__ ((__format__ (__printf__, 3, 0)));
-#ifdef __cplusplus
+#ifdef __cplusplus
}
#endif