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/*-
* Code created by modifying iscanf.c which has following copyright.
*
* 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
<<viscanf>>, <<vfiscanf>>, <<vsiscanf>>---format argument list
INDEX
viscanf
INDEX
_viscanf_r
INDEX
vfiscanf
INDEX
_vfiscanf_r
INDEX
vsiscanf
INDEX
_vsiscanf_r
SYNOPSIS
#include <stdio.h>
#include <stdarg.h>
int viscanf(const char *<[fmt]>, va_list <[list]>);
int vfiscanf(FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>);
int vsiscanf(const char *<[str]>, const char *<[fmt]>, va_list <[list]>);
int _viscanf_r(struct _reent *<[reent]>, const char *<[fmt]>,
va_list <[list]>);
int _vfiscanf_r(struct _reent *<[reent]>, FILE *<[fp]>, const char *<[fmt]>,
va_list <[list]>);
int _vsiscanf_r(struct _reent *<[reent]>, const char *<[str]>,
const char *<[fmt]>, va_list <[list]>);
DESCRIPTION
<<viscanf>>, <<vfiscanf>>, and <<vsiscanf>> are (respectively) variants
of <<iscanf>>, <<fiscanf>>, and <<siscanf>>. They differ only in
allowing their caller to pass the variable argument list as a
<<va_list>> object (initialized by <<va_start>>) rather than
directly accepting a variable number of arguments.
RETURNS
The return values are consistent with the corresponding functions:
<<viscanf>> returns the number of input fields successfully scanned,
converted, and stored; the return value does not include scanned
fields which were not stored.
If <<viscanf>> attempts to read at end-of-file, the return value
is <<EOF>>.
If no fields were stored, the return value is <<0>>.
The routines <<_viscanf_r>>, <<_vfiscanf_f>>, and <<_vsiscanf_r>> are
reentrant versions which take an additional first parameter which points to the
reentrancy structure.
PORTABILITY
These are newlib extensions.
Supporting OS subroutines required:
*/
#include <_ansi.h>
#include <reent.h>
#include <stdio.h>
#ifdef _HAVE_STDC
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include "local.h"
#ifndef _REENT_ONLY
int
viscanf (const char *fmt,
va_list ap)
{
struct _reent *reent = _REENT;
_REENT_SMALL_CHECK_INIT (reent);
return __svfiscanf_r (reent, _stdin_r (reent), fmt, ap);
}
#endif /* !_REENT_ONLY */
int
_viscanf_r (struct _reent *ptr,
const char *fmt,
va_list ap)
{
_REENT_SMALL_CHECK_INIT (ptr);
return __svfiscanf_r (ptr, _stdin_r (ptr), fmt, ap);
}
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