116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
/*
|
|
* Copyright (c) 1990 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
|
|
|
|
#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;
|
|
|
|
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 (_REENT, &f, fmt, ap);
|
|
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;
|
|
|
|
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 (size > 0)
|
|
*f._p = 0;
|
|
return ret;
|
|
}
|