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1 /* vsprintf with automatic memory allocation.
2    Copyright (C) 2002-2003 Free Software Foundation, Inc.
3 
4    This program is free software; you can redistribute it and/or modify it
5    under the terms of the GNU Library General Public License as published
6    by the Free Software Foundation; either version 2, or (at your option)
7    any later version.
8 
9    This program is distributed in the hope that it will be useful,
10    but WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12    Library General Public License for more details.
13 
14    You should have received a copy of the GNU Library General Public
15    License along with this program; if not, write to the Free Software
16    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
17    USA.  */
18 
19 #ifndef _VASNPRINTF_H
20 #define _VASNPRINTF_H
21 
22 /* Get va_list.  */
23 #include <stdarg.h>
24 
25 /* Get size_t.  */
26 #include <stddef.h>
27 
28 #ifndef __attribute__
29 /* This feature is available in gcc versions 2.5 and later.  */
30 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
31 #  define __attribute__(Spec) /* empty */
32 # endif
33 /* The __-protected variants of `format' and `printf' attributes
34    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
35 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
36 #  define __format__ format
37 #  define __printf__ printf
38 # endif
39 #endif
40 
41 #ifdef	__cplusplus
42 extern "C" {
43 #endif
44 
45 /* Write formatted output to a string dynamically allocated with malloc().
46    You can pass a preallocated buffer for the result in RESULTBUF and its
47    size in *LENGTHP; otherwise you pass RESULTBUF = NULL.
48    If successful, return the address of the string (this may be = RESULTBUF
49    if no dynamic memory allocation was necessary) and set *LENGTHP to the
50    number of resulting bytes, excluding the trailing NUL.  Upon error, set
51    errno and return NULL.  */
52 extern char * asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...)
53        __attribute__ ((__format__ (__printf__, 3, 4)));
54 extern char * vasnprintf (char *resultbuf, size_t *lengthp, const char *format, va_list args)
55        __attribute__ ((__format__ (__printf__, 3, 0)));
56 
57 #ifdef	__cplusplus
58 }
59 #endif
60 
61 #endif /* _VASNPRINTF_H */
62