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/*
* 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.
*/
/*
FUNCTION
<<vsniprintf>>---write formatted output (integer only)
INDEX
vsniprintf
ANSI_SYNOPSIS
#include <stdio.h>
int vsniprintf(char *<[str]>, size_t <[size]>, const char *<[fmt]>, va_list <[list]>);
TRAD_SYNOPSIS
#include <stdio.h>
int vsnprintf(<[str]>, <[size]>, <[fmt]>, <[list]>)
char *<[str]>;
size_t <[size]>;
char *<[fmt]>;
va_list <[list]>;
DESCRIPTION
<<vsniprintf>> is a restricted version of <<vsnprintf>>: it has the same
arguments and behavior, save that it cannot perform any floating-point
formatting: the <<f>>, <<g>>, <<G>>, <<e>>, and <<F>> type specifiers
are not recognized.
RETURNS
<<vsniprintf>> returns the number of bytes in the output string,
save that the concluding <<NULL>> is not counted.
<<vsniprintf>> returns when the end of the format string is
encountered.
PORTABILITY
<<vsniprintf>> is not required by ANSI C.
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "%W% (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */
#include <_ansi.h>
#include <reent.h>
#include <stdio.h>
#include <limits.h>
#ifdef _HAVE_STDC
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include <errno.h>
#ifndef _REENT_ONLY
int
_DEFUN(vsniprintf, (str, size, fmt, ap),
char *str _AND
size_t size _AND
_CONST char *fmt _AND
va_list ap)
{
int ret;
FILE f;
struct _reent *ptr = _REENT;
if (size > INT_MAX)
{
ptr->_errno = EOVERFLOW;
return EOF;
}
f._flags = __SWR | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._w = (size > 0 ? size - 1 : 0);
f._file = -1; /* No file. */
ret = _vfiprintf_r (ptr, &f, fmt, ap);
if (ret < EOF)
ptr->_errno = EOVERFLOW;
if (size > 0)
*f._p = 0;
return ret;
}
#endif /* !_REENT_ONLY */
int
_DEFUN(_vsniprintf_r, (ptr, str, size, fmt, ap),
struct _reent *ptr _AND
char *str _AND
size_t size _AND
_CONST char *fmt _AND
va_list ap)
{
int ret;
FILE f;
if (size > INT_MAX)
{
ptr->_errno = EOVERFLOW;
return EOF;
}
f._flags = __SWR | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._w = (size > 0 ? size - 1 : 0);
f._file = -1; /* No file. */
ret = _vfiprintf_r (ptr, &f, fmt, ap);
if (ret < EOF)
ptr->_errno = EOVERFLOW;
if (size > 0)
*f._p = 0;
return ret;
}
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