binutils-gdb/libiberty/asprintf.c

57 lines
1.8 KiB
C
Raw Normal View History

1999-05-03 09:29:11 +02:00
/* Like sprintf but provides a pointer to malloc'd storage, which must
be freed by the caller.
Copyright (C) 1997, 2003 Free Software Foundation, Inc.
1999-05-03 09:29:11 +02:00
Contributed by Cygnus Solutions.
This file is part of the libiberty library.
Libiberty is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
Libiberty is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with libiberty; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
Boston, MA 02110-1301, USA. */
1999-05-03 09:29:11 +02:00
2005-04-16 03:05:05 +02:00
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
1999-05-03 09:29:11 +02:00
#include "ansidecl.h"
#include "libiberty.h"
#include <stdarg.h>
2001-10-16 04:55:31 +02:00
/*
2001-10-18 00:35:28 +02:00
@deftypefn Extension int asprintf (char **@var{resptr}, const char *@var{format}, ...)
2001-10-16 04:55:31 +02:00
Like @code{sprintf}, but instead of passing a pointer to a buffer, you
pass a pointer to a pointer. This function will compute the size of
the buffer needed, allocate memory with @code{malloc}, and store a
pointer to the allocated memory in @code{*@var{resptr}}. The value
returned is the same as @code{sprintf} would return. If memory could
not be allocated, minus one is returned and @code{NULL} is stored in
2001-10-16 04:55:31 +02:00
@code{*@var{resptr}}.
@end deftypefn
*/
1999-05-03 09:29:11 +02:00
int
2005-03-27 07:28:42 +02:00
asprintf (char **buf, const char *fmt, ...)
1999-05-03 09:29:11 +02:00
{
int status;
2001-09-04 23:33:56 +02:00
VA_OPEN (ap, fmt);
VA_FIXEDARG (ap, char **, buf);
VA_FIXEDARG (ap, const char *, fmt);
1999-05-03 09:29:11 +02:00
status = vasprintf (buf, fmt, ap);
2001-09-04 23:33:56 +02:00
VA_CLOSE (ap);
1999-05-03 09:29:11 +02:00
return status;
}