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/* Like vsprintf but provides a pointer to malloc'd storage, which must
be freed by the caller.
Copyright (C) 1994-2023 Free Software Foundation, Inc.
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. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <ansidecl.h>
#include <stdarg.h>
#if !defined (va_copy) && defined (__va_copy)
# define va_copy(d,s) __va_copy((d),(s))
#endif
#include <stdio.h>
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#else
extern void *malloc ();
#endif
#include "libiberty.h"
#include "vprintf-support.h"
#ifdef TEST
int global_total_width;
#endif
/*
@deftypefn Extension int vasprintf (char **@var{resptr}, @
const char *@var{format}, va_list @var{args})
Like @code{vsprintf}, 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{vsprintf} would return. If memory could
not be allocated, minus one is returned and @code{NULL} is stored in
@code{*@var{resptr}}.
@end deftypefn
*/
static int int_vasprintf (char **, const char *, va_list);
static int
int_vasprintf (char **result, const char *format, va_list args)
{
int total_width = libiberty_vprintf_buffer_size (format, args);
#ifdef TEST
global_total_width = total_width;
#endif
*result = (char *) malloc (total_width);
if (*result != NULL)
return vsprintf (*result, format, args);
else
return -1;
}
int
vasprintf (char **result, const char *format,
#if defined (_BSD_VA_LIST_) && defined (__FreeBSD__)
_BSD_VA_LIST_ args)
#else
va_list args)
#endif
{
return int_vasprintf (result, format, args);
}
#ifdef TEST
static void ATTRIBUTE_PRINTF_1
checkit (const char *format, ...)
{
char *result;
va_list args;
va_start (args, format);
vasprintf (&result, format, args);
va_end (args);
if (strlen (result) < (size_t) global_total_width)
printf ("PASS: ");
else
printf ("FAIL: ");
printf ("%d %s\n", global_total_width, result);
free (result);
}
extern int main (void);
int
main (void)
{
checkit ("%d", 0x12345678);
checkit ("%200d", 5);
checkit ("%.300d", 6);
checkit ("%100.150d", 7);
checkit ("%s", "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\
777777777777777777333333333333366666666666622222222222777777777777733333");
checkit ("%f%s%d%s", 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx");
return 0;
}
#endif /* TEST */
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