124 lines
3.3 KiB
C
124 lines
3.3 KiB
C
/* Like vsprintf but provides a pointer to malloc'd storage, which must
|
|
be freed by the caller.
|
|
Copyright (C) 1994-2022 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 PTR 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 */
|