newlib-cygwin/newlib/libc/stdio/asiprintf.c

107 lines
2.4 KiB
C

/*
* Copyright (c) 1990, 2007 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/* This code was copied from asprintf.c */
#include <_ansi.h>
#include <reent.h>
#include <stdio.h>
#ifdef _HAVE_STDC
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include <limits.h>
#include "local.h"
int
#ifdef _HAVE_STDC
_DEFUN(_asiprintf_r, (ptr, strp, fmt),
struct _reent *ptr _AND
char **strp _AND
_CONST char *fmt _DOTS)
#else
_asiprintf_r(ptr, strp, fmt, va_alist)
struct _reent *ptr;
char **strp;
_CONST char *fmt;
va_dcl
#endif
{
int ret;
va_list ap;
FILE f;
/* mark a zero-length reallocatable buffer */
f._flags = __SWR | __SSTR | __SMBF;
f._bf._base = f._p = NULL;
f._bf._size = f._w = 0;
f._file = -1; /* No file. */
#ifdef _HAVE_STDC
va_start (ap, fmt);
#else
va_start (ap);
#endif
ret = vfiprintf (&f, fmt, ap);
va_end (ap);
if (ret >= 0)
{
*f._p = 0;
*strp = f._bf._base;
}
return (ret);
}
#ifndef _REENT_ONLY
int
#ifdef _HAVE_STDC
_DEFUN(asiprintf, (strp, fmt),
char **strp _AND
_CONST char *fmt _DOTS)
#else
asiprintf(strp, fmt, va_alist)
char **strp;
_CONST char *fmt;
va_dcl
#endif
{
int ret;
va_list ap;
FILE f;
/* mark a zero-length reallocatable buffer */
f._flags = __SWR | __SSTR | __SMBF;
f._bf._base = f._p = NULL;
f._bf._size = f._w = 0;
f._file = -1; /* No file. */
#ifdef _HAVE_STDC
va_start (ap, fmt);
#else
va_start (ap);
#endif
ret = vfiprintf (&f, fmt, ap);
va_end (ap);
if (ret >= 0)
{
*f._p = 0;
*strp = f._bf._base;
}
return (ret);
}
#endif