120 lines
2.8 KiB
C
120 lines
2.8 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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* advertising materials, and 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 sprintf.c */
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/* This code created by modifying sprintf.c so copyright inherited. */
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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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#ifdef _HAVE_STDC
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include <limits.h>
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#include <errno.h>
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#include "local.h"
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int
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#ifdef _HAVE_STDC
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_DEFUN(_snprintf_r, (ptr, str, size, fmt),
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struct _reent *ptr _AND
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char *__restrict str _AND
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size_t size _AND
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_CONST char *__restrict fmt _DOTS)
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#else
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_snprintf_r(ptr, str, size, fmt, va_alist)
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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_dcl
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#endif
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{
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int ret;
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va_list ap;
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FILE f;
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if (size > INT_MAX)
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{
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ptr->_errno = 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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#ifdef _HAVE_STDC
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va_start (ap, fmt);
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#else
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va_start (ap);
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#endif
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ret = _svfprintf_r (ptr, &f, fmt, ap);
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va_end (ap);
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if (ret < EOF)
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ptr->_errno = 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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#ifndef _REENT_ONLY
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int
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#ifdef _HAVE_STDC
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_DEFUN(snprintf, (str, size, fmt),
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char *__restrict str _AND
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size_t size _AND
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_CONST char *__restrict fmt _DOTS)
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#else
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snprintf(str, size, fmt, va_alist)
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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_dcl
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#endif
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{
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int ret;
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va_list ap;
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FILE f;
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struct _reent *ptr = _REENT;
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if (size > INT_MAX)
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{
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ptr->_errno = 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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#ifdef _HAVE_STDC
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va_start (ap, fmt);
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#else
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va_start (ap);
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#endif
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ret = _svfprintf_r (ptr, &f, fmt, ap);
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va_end (ap);
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if (ret < EOF)
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ptr->_errno = 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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#endif
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