71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
/*
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* Copyright (c) 1990, 2007 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* and/or other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/* doc in viprintf.c */
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "%W% (Berkeley) %G%";
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#endif /* LIBC_SCCS and not lint */
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#include <_ansi.h>
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#include <reent.h>
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#include <stdio.h>
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#include <limits.h>
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#include <stdarg.h>
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#include <errno.h>
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#include "local.h"
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#ifndef _REENT_ONLY
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int
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vsniprintf (char *str,
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size_t size,
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const char *fmt,
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va_list ap)
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{
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return _vsniprintf_r (_REENT, str, size, fmt, ap);
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}
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#endif /* !_REENT_ONLY */
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int
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_vsniprintf_r (struct _reent *ptr,
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char *str,
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size_t size,
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const char *fmt,
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va_list ap)
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{
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int ret;
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FILE f;
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if (size > INT_MAX)
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{
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_REENT_ERRNO(ptr) = EOVERFLOW;
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return EOF;
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}
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f._flags = __SWR | __SSTR;
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f._bf._base = f._p = (unsigned char *) str;
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f._bf._size = f._w = (size > 0 ? size - 1 : 0);
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f._file = -1; /* No file. */
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ret = _svfiprintf_r (ptr, &f, fmt, ap);
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if (ret < EOF)
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_REENT_ERRNO(ptr) = EOVERFLOW;
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if (size > 0)
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*f._p = 0;
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return ret;
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}
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